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14 wcdma p&o-b-en-access&paging optimization-55

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  • 1. Access&Paging Optimization ZTE CORPORATION ZTE Plaza, Keji Road South, Hi-Tech Industrial Park, Nanshan District, Shenzhen, P. R. China 518057 Tel: (86) 755 26771900 800-9830-9830 Fax: (86) 755 26772236 URL: http://support.zte.com.cn E-mail: doc@zte.com.cn
  • 2. Contents Chapter 1..........................................................................1 Overview ..........................................................................1 Introduction ...................................................................1 System Broadcast .................................................................1 RRC Connection Establishment and Release ..............................2 Paging.................................................................................2 NAS Message Retransmission .................................................3 Encryption ...........................................................................4 Integrity Protection ...............................................................4 Radio Connection Monitoring ..................................................5 Radio Connection Reestablishment ..........................................5 High-speed Signaling Bearer...................................................5 System Broadcast ...........................................................6 System Broadcast Schedule and Delivery .................................6 Delivery Content Description of SIBs........................................8 RRC Connection Establishment and Release ...................... 16 Abnormal Process Handling of RRC Connection Establishment.... 19 RRC Connection Release ...................................................... 19 Paging ....................................................................... 21 Paging Flow ....................................................................... 21 PAGING TYPE 1 .................................................................. 22 PAGING TYPE 2 .................................................................. 24 Radio Connection Monitoring........................................... 25 Radio Connection Reestablishment .................................. 27 Chapter 2........................................................................29 Parameters and Configuration ......................................29 System Information Broadcast Parameters ....................... 29 SIB1 Parameter List ............................................................ 29 SIB1 Parameter Configuration............................................... 31
  • 3. Connection Establishment and Release Parameters ............ 41 Parameter List ....................................................................41 Parameter Configuration.......................................................42 Paging Parameter.......................................................... 48 Parameter List ....................................................................48 Parameter Configuration.......................................................48
  • 4. C h a p t e r 1 Overview Introduction System Broadcast System broadcast fuction periodically transmitting the system information to cells in a broadcast mode and accordingly update the system information. The system information is broadcast on BCH, including the following contents: Network information such as PLMN ID, LA and RA Timers and counters related with RRC connection UTRAN Registration Area (URA) configuration information Cell selection and cell re-selection parameters Common channel configuration parameters such as FACH, PCH and RACH UL interference information of auxiliary power control UE measurement control message in the Idle or common channel status Neighbor cell configuration parameters AGPS location information The contents of system information are involved in various System Information Blocks (SIB). Except that the SIB7 (including UL interference information) can be auto-measured, encoded and transmitted by the Node B, all SIBs are controlled and encoded by RNC. Confidential and Proprietary Information of ZTE CORPORATION 1
  • 5. Access&Paging Optimization RRC Connection Establishment and Release This function manages establishment and release of Radio Resource Control (RRC) connection between UTRAN and UE. It establishes the signaling bearer from UE to UTRAN access point and provides the signaling transmission channel for the UE and UTRAN. When the UE needs to establish connection with the network such as LA or RA update, service request and paging response, the UE originates the RRC connection setup request on RACH according to the parameter information of system broadcast the UTRAN assigns related resources to the UE to establish Signaling Radio Bearer (SRB). After the process of RRC connection setup is completed, the UE generally establishes lu connection with the CN to fulfill LA and RA update and service process, and meanwhile SRB provides the signaling transmission channel between UE and CE. The UTRAN monitors lu connection state and radio connection state of the UE. If all lu connections are released or radio connection with the UE is interrupted, the UTRAN accomplishes RRC connection release to release all resources assigned for the UE. Paging When the CN has service requirements, the system uses the paging function to trigger connection setup between UE and CN. For example, when the UE needs to receive the SMS or MMS information or other users call in this UE, the CN transmits the paging message to the RNC over the lu interface. And the RNC selects different areas to transmit the paging message to the UE based on the RRC connection state of UE.  UE in the IDLE status: The RNC does not detect the detailed location information of UE and thus transmits the paging information to the whole LA or RA according to the LA or RA information carried in the CN paging message.  UE in the PCH status: The RNC detects the URA location information of UE and transmits the paging message to the whole URA.  UE in the FACH or DCH status: The RNC detects the cell location information of UE and transmits the paging message to the whole cell. The following paging scenarios originated by RNC are supportable:  When the packets exist in the DL buffer area, the RNC transmits the paging message to trigger the UE from the URA_PCH status to the CELL_FACH status to establish service bearer for DL data transmission. 2 Confidential and Proprietary Information of ZTE CORPORATION
  • 6. Chapter 1 0BOverview  When the system information changes, the RNC transmits the paging message to inform all UEs in the Idle or PCH status within the cell of system information changed.  When it is required to interrupt the RRC connection of UE in the PCH status, the RNC transmits the paging message to release the RRC of UE. Two paging modes such as PAGING TYPE 1 and PAGING TYPE 2 are supportable:  For the UE in the IDLE or URA_PCH status, the RNC transmits PAGING TYPE1.  For the UE in the CELL_FACH or CELL_DCH status, the RNC transmits PAGING TYPE2. NAS Message Retransmission The UTRAN is an essential network of signaling transmission on the Non-Access Stratum (NAS) layer between UE and CN. The NAS signaling is used in the control process such as UE location update, authentication, call setup and release, and also used in transfer of SMS data. The NAS signaling and SMS data transmitted between UE and CN are not resolved and processed by UTRAN. The UTRAN assumes the NAS signaling and SMS data as the CE content of the direct-transfer message defined in the RANAP and RRC protocols and transparently transmits them between CN and UE. Three types of direct-transfer message are available.  Initial direct transfer: Once the UTRAN receives the initial-direct transfer message from the UE, the RNC establishes connection with the Iu interface of MSC or SGSN (SCCP) according to the tag of CN domain (PS or CS) in the message, and attaches the NAS message to the initial UE message to transmit to the corresponding MSC or SGSN. Meanwhile, the RNC records the binding relation between SCCP connection and UE RRC connection to establish a channel for the subsequent NAS message between UE and CN.  UL direct transfer: When receiving the uplink direct-transfer message from the UE, the UTRAN attaches the NAS message to the direct transfer message according to the tag of CN domain in the message and then transmits to the corresponding MSC or SGSN.  DL direct transfer: When receiving the direct transfer message from the CN, the UTRAN attaches the NAS message to the downlink direct-transfer message according to the corresponding relation of SCCP and RRC connection, and then transmits to the related UE. Confidential and Proprietary Information of ZTE CORPORATION 3
  • 7. Access&Paging Optimization When receiving the lu connection release message from the CN, the RNC releases the lu connection of CN and cancels the binding relation of SCCP and RRC connection. Encryption This function performs encryption of users’ service data and signaling data being transmitted over the Un interface, to guarantee confidentiality of user communication between RNC and UE. ZTE RAN supports the encryption algorithm UEA0 and UEA1: UEA0 indicates that the Uu-interface data is not encrypted; UEA1 is based on the KASUMI algorithm, f8 Is performing encryption and decryption. The CN starts encryption protection and configures the type of ecryption is going to be used. The CN notifies the RNC to enable the encryption by the RANAP security mode command which carries the key of the encryption algorithm. According to its encryption ability, the UE encryption algorithm ability and the priority of selectable encryption algorithms configured by the CN, the RNC selects a proper encryption algorithm, and enables the encryption by the RRC security mode command. After enabling the encryption, when the RNC or UE is sending the data, with the help of the encryption key and the variables with the transmitted-data change, the encryption function executes the f8 algorithm to encrypt the transmitted data. The receiver uses the same algorithm to decrypt the data. The process of encryption and decryption is executed on the RLC layer (AM or UM mode) or MAC layer (TM mode). Integrity Protection To protect the signaling from the third-party’s hostile attack, the function provides the checking mechanism for the Un interface signaling over the air interface. ZTE RAN supports a unique integrity protection algorithm UIA1 defined in 3GPP – based on the KASUMI algorithm and the integrity protection performed by f9. The CN configures whether to enable the integrity protection function. The CN informs the RNC to enable the integrity protection through the command process of RANAP security mode, the message carrying the secret key of the integrity protection algorithm. The RNC enables the integrity protection through the command process of RRC security mode. If the integrity protection is enabled, during transmitting the RRC message, the RNC or UE first uses the f9 algorithm to calculate the identification code MAC-I for the integrity protection according to the secret key and transmitted message. Then the RNC or UE attaches the MAC-I to the message to be transmitted and transmits it. The receiving end must use the same algorithm and secret key with the transmitting end to calculate the identification code XMAC-I of the received message and 4 Confidential and Proprietary Information of ZTE CORPORATION
  • 8. Chapter 1 0BOverview compares the calculated value with the received MAC-I. If the two values are identical, the receiving message is considered to be correct; or else, the receiving message is discarded. Not all Un interface signaling is protected. ZTE RAN executes the RRC message of integrity protection abiding by the 3GPP TS25.331 protocol. Radio Connection Monitoring This function monitors the radio connection states of UEs having established RRC. For example, due to poor radio quality or other causes, the RNC determines that radio connection between UE and network has interrupted, and immediately releases all resources assigned to the UE, including service-established RB resources and RRC connection. To monitor the radio connection state, the following mode supports:  The Node B monitors the RL state.  The RNC monitors the RLC connection state.  The RNC monitors the cell update message of UE.  The RNC monitors the UE keep-alive timer. After releasing the radio resources, the RNC transmits the lu release request message to the CN over the lu interface and informs the CN to release the corresponding RAB resource. Radio Connection Reestablishment Because of sudden interference or abrupt change of radio environment, the UE on DCH suffers short interruption of radio connection and does not continue performing services without network signals. However, the UE recovers the network signals before the UTRAN detects interruption of the radio connection. For this scenario, the UE transmits the cell update message carrying the cause of Radio link failure or RLC unrecoverable error (only corresponding to the service RB) to attempt to reestablish connection with the network. The RNC supports the function of reestablishing the radio connection between UE and UTRAN and recovering communication under the situation of not releasing the previous RRC and lu connections. For user experience, the reestablishing process brings about short-time service interruption, but call drop never occurs. High-speed Signaling Bearer The function supports the usage of 13.6 kbps Signaling Radio Bearer (SRB) in the process of call establishment. When service Confidential and Proprietary Information of ZTE CORPORATION 5
  • 9. Access&Paging Optimization establishment is completed, 3.4Kbps SRB is recovered to save radio resources. 13.6 kbps high-speed SRB can shorten the time of call establishment up to 1s in various scenarios. The InitRrcLBSw parameter enables and controls this function. System Broadcast The RNC manages construction and broadcast of the system message. The system message, including NAS information, cell common-channel configuration information, cell selection and reselection parameter, initial access as well as measurement control and location information, provides the necessary UTRAN information for the processes of Location Area Update (LAU), Route Area Update (RAU) and RRC establishment originated by EU under the cell. The system information consists of three types: Master Information Block (MIB), Schedule Block (SB) and System Information Block (SIB). System Broadcast Schedule and Delivery The MIB can save the schedule information of SB and SIB. The SB saves the schedule information of SIB, including the SB1 and SB2. The SIB saves the detailed content of the system information message. ZTE UTRAN system supports the SB1, SB2, SIB3, SIB5, SIB7, SIB11 and SIB18. This version does not support the SIB11 bis. When the cell has been established or added, the system broadcasts the system message. Update of the system information or timeout of the timer also triggers broadcast of the system message. See Figure 1. 6 Confidential and Proprietary Information of ZTE CORPORATION
  • 10. Chapter 1 0BOverview FI G U R E 1 SY S T E M BR O AD C AS T When cell establishment is completed or the system information is updated, the system first schedules system information broadcast to confirm the transmission period of various information blocks. According to importance of SIBs, the system divides SIBs into two priorities. To promote the broadcast frequency of important system information, the first-priority SIB is scheduled by MIB and the second-priority SIB scheduled by SB1. Less-content SIBs can be connected in tandem in the same TTI to transmit, while more-content SIBs can be partitioned into sections to transmit, such as the SIB5 and SIB11. Refer to the following detailed classification.  The MIB is used to schedule the SB1, SIB1, SIB2, SIB3, SIB5 and SIB7.  The MIB is used to schedule the SIB11 and SIB18. Except MIB, all SIBs are divided into two levels according to importance. The level stands for the priority of filling the system information. See Table 1. TAB L E 1 SCH E D U L I N G LE VE L O F SY ST EM IN F O RM AT I O N BL O C K Level 1 IB scheduled by MIB: SB1,SB2,SIB1,SIB2,SIB3,SIB5,SIB7 Level 2 IB scheduled by SB1: SIB11, SIB18 The SIB broadcast period relation of each level: Lev2 period >=Lev1 period According to the scheduling principles, the RNC fills the system information and transmits it to the Node B by SYSTEM INFORMATION UPDATE REQUEST. When receiving the SYSTEM Confidential and Proprietary Information of ZTE CORPORATION 7
  • 11. Access&Paging Optimization INFORMATION UPDATE RESPONSE message, the RNC assumes that the system information is successfully updated. After receiving the system information, the Node B broadcasts all information blocks on BCH according to a given scheduling period. When the system information is updated, the system informs UEs respectively in the IDLE, PCH and FACH states through different modes, as follows:  Inform UEs respectively in the IDLE and PCH states by paging: The RNC transmits PAGING TYPE 1 to UEs; the CE BCCH modification info in the message indicates the system information updated.  Inform UEs in the FACH state by system information change indication: The system transmits SYSTEM INFORMATION CHANGE INDICATION to UEs; the CE BCCH modification info in the message indicates the system information updated. Delivery Content Description of SIBs SIB1 The SIB1 consists of CN information, timers and counters related to UEs. CEs configured by OMCR are as follows:  T300: Indicates the waiting duration after the UE transmits the RRC CONNECTION SETUP REQUEST message. The timer is enabled after the UE transmits RRC CONNECTION REQUEST (This example is excluded: If the cause of the RRC connection request is MBMS Reception, T318 is enabled, instead of T300; the T318 value is a fixed value 1000 ms configured in the RNC). If RRC CONNECTION SETUP is received, the timer stops. When the timer expires and the retransmission times are less than N300, RRC CONNECTION SETUP REQUEST is retransmitted.  N300: Indicates the maximum of retransmission times of the RRC CONNECTION SETUP REQUEST message. If T300 expires and the retransmission times are equal to or more than N300, RRC CONNECTION SETUP is still not received and then the UE enters the IDLE state.  T312Idle: Indicates the waiting time of “In Sync” received from L1 when the UE in the IDLE state is establishing the dedicated physical channel. While the UE is establishing the dedicated physical channel, this timer is enabled. While the UE detects that the number of Layer 1 receiving “In Sync” is equal to that of N312Idle, the timer is disabled. If the timer expires, the physical channel fails to establish.  N312Idle: Indicates the number of “In Sync” continuously received from L1 before the UE succeeds in establishing the dedicated physical channel. 8 Confidential and Proprietary Information of ZTE CORPORATION
  • 12. Chapter 1 0BOverview  T302: Indicates the waiting time after the UE transmits the CELL UPDATE or URA UPDATE message. While the UE is transmitting CELL UPDATE or URA UPDATE, this timer is enabled. When the UE is receiving CELL UPDATE CONFIRM or URA UPDATE CONFIRM, the timer is disabled. If the timer expires and the number of retransmitting CELL UPDATE or URA UPDATE is less than N302, the UE retransmits CELL UPDATE or URA UPDATE.  N302: Indicates the maximum of retransmitting the CELL UPDATE or URA UPDATE message. When T302 expires and the number of UE transmitting CELL UPDATE or URA UPDATE is equal to or more than N302, the UE enters the IDLE state.  T304: Indicates the waiting time after the UE transmits the UE CAPABILITY INFORMATION message. While the UE is transmitting UE CAPABILITY INFORMATION, this timer is enabled, While the UE is receiving UE CAPABILITY INFORMATION confirmed, the timer is disabled. If the timer expires and the number of UE transmitting UE CAPABILITY INFORMATION is less than N304, the UE retransmits UE CAPABILITY INFORMATION.  N304: Indicates the maximum of retransmitting the UE CAPABILITY INFORMATION message. When T304 expires and the number of retransmitting UE CAPABILITY INFORMATION is equal to or more than N304, the UE enables the CELL UPDATE process.  T305: Indicates the period duration of UE performing periodical cell update or URA update in the CELL_FACH, CELL-PCH or URA_PCH state. When the UE is entering the CELL_FACH, CELL-PCH or URA_PCH state, this timer is enabled. While the UE is receiving the CELL UPDATE confirmation or URA UPDATE CONFIRM message, the timer is disabled. If the timer expires and the UE is in the service area, the UE transmits the CELL UPDATE message. If the timer expires and the UE is out of the service area, the UE enables the T307 timer.  T307: Indicates the waiting timer of cell reselection after the UE disengages from the service area. When this timer expires, the UE returns to the IDLE state.  T308: Indicates the waiting time after the UE in the CELL_DCH state transmits the RRC CONNECTION RELEASE COMPLETE message. After the UE transmits RRC CONNECTION RELEASE COMPLETE, this timer is enabled. If the timer expires and the number of UE transmitting RRC CONNECTION RELEASE COMPLETE is less than N308, the UE retransmits the RRC CONNECTION RELEASE COMPLETE message.  N308: Indicates the maximum of UE retransmitting RRC CONNECTION RELEASE COMPLETE. If T308 expires and the number of UE transmitting RRC CONNECTION RELEASE COMPLETE is equal to or more than N308, the UE enters the IDLE state. Confidential and Proprietary Information of ZTE CORPORATION 9
  • 13. Access&Paging Optimization  T309: Indicates the waiting time after the UE enabling the access request to other RATs (such as, GSM). When the UE receives the CELL CHANGE ORDER FROM UTRAN message, this timer is enabled. When the UE successfully receives the ACK message of connection setup request in a new cell, the timer is disabled. If the timer expires, the UE reaccesses the primary UTRAN.  T312 Connected: A timer used in the connection mode; indicates the waiting time of receiving “In Async” from L1 during the UE in the connection mode establishing the dedicated physical channel. When the UE starts establishing the dedicated channel, this timer is enabled. When the UE detects that the number of L1 “In Async” is equal to that defined in N312, the timer is disabled. If the timer expires, the physical channel fails to establish.  N312Connected: A counter used in the connection mode; indicates the number of UE in the Connection mode continuously receiving “In Sync” from L1 before successful establishment of dedicated physical channel.  T313: Indicates the waiting time of the UE in the DCH state confirming asynchronization of the established DPCCH. When the UE in the DCH state continuously receives “In Async” N313 times from L1, this timer is enabled. When the UE in the DCH state continuously receives “In Sync” N315 times from L1, the timer is disabled. If the timer expires, all radio links related to “In Async” fail.  N313: Indicates the maximum of UE continuously receiving “In Async” from L1.  N315: Indicates the maximum of UE continuously receiving “In Sync” from L1 under the T313-activated status.  T314: Defines RL failure and indicates the time of the RB (related to T314) waiting for completion of cell update process. During establishing a RB, the system assumes the RB uses T314 or T315. When the radio link fails and the current RB uses T314, this timer is enabled. When the process of cell update is completed, the timer is disabled. If the timer expires, the UE first judges whether T302 is still running. If yes, the UE continues waiting the CELL UPDATE CONFIRM or URA UPDATE CONFIRM message; if no, the UE judges whether T315 is running. If T315 is still running, the UE only releases the RAB resources related to T314. If T315 stops running, the UE releases all RAB resources to enter the IDLE state.  T315: Defines RL failure and indicates the time of the RB (related to T315) waiting for completion of cell update process. During establishing a RB, the system assumes the RB uses T314 or T315. When the radio link fails and the current RB uses T315, this timer is enabled. When the process of cell update is completed, the timer is disabled. If T315 expires, the processing method is similar to that of 10 Confidential and Proprietary Information of ZTE CORPORATION
  • 14. Chapter 1 0BOverview T314. The UE performs corresponding processing according to the running status of T302 and T314.  T316: Indicates the waiting time for cell selection/reselection after the UE in the CELL_PCH or URA_PCH state is out of the service area. When the UE in the PCH state is out of the service area, this timer is enabled. When the UE is in the service area, the timer is disabled. If the timer expires and the UE is in the service area, cell update is enabled. If the UE is out of the service area, the T317 is enabled; until the UE in the FACH state is in the service area, the cell update is enabled.  T317: Indicates the waiting time for cell selection/reselection after the UE in the CELL_FACH state is out of the service area. When T316 expires or when the UE in the FACH state is out of the service area, this timer is enabled. When the UE is in the service area, the timer is disabled.  MCC: Mobile country code  MNC: Mobile network code  CnDomain: CN domain supported  T3212Cs: The timer of periodical location update. The location update is classified into two types, one of which is originated by the UE after finding change of LAC and the other of which is periodical update of UE specified by the system. T3212Cs is a timer of periodical location update.  ATTIndCs: Switching variable; indicates whether the IMSI ATTACH and DETACH flows are adopted.  NMOPs: Indicates the mode of network operation. The network mode Ⅰ indicates the Gs interface exists between MSCServer and SGSN; the network mode Ⅱ indicates the Gs interface does not exist.  Kcs: The cycle length coefficient of CS-domain discontinuous receiving. While counting the paging occasion, the UE in the IDLE or PCH state monitors the PICH within the duration specified in the this parameter.  Kps: The cycle length coefficient of PS-domain discontinuous receiving. While counting the paging occasion, the UE in the IDLE or PCH state monitors the PICH within the duration specified in this parameter.  MbmsModPrdCoeff: The period coefficient of MBMS modification. The preceding parameters can be configured by OMCR. SIB2 The SIB2 indicates the URA ID of the cell, used for URA update of the UE in the URA_PCH status. The following CEs can be configured by OMCR. See Table. Confidential and Proprietary Information of ZTE CORPORATION 11
  • 15. Access&Paging Optimization TAB L E 2 SIB2 CE CO NF IG U R E D B Y OMCR Name Description URANum UTRAN registration area number URA[4] UTRAN registration area ID SIB3/SIB4 The SIB3 and SIB4 fill the parameters related to cell selection and reselection. The SIB3 fills the information required by the UE in the IDLE state and the SIB4 fills the information required by the UE in the CONNECT state (on FACH and DCH, controlled by the measurement strategy). If the SIB4 is not delivered, the SIB3 also serves the UE in the CONNECT state. The Sib3orSib4 parameter (SIB3 broadcast or SIB4 broadcast) can be configured on the OMCR. Currently, the SIB4 does not broadcast and thus the Sib3orSib4 is set to 0 (broadcast over the SIB3). The following CEs can be configured by OMCR. See Table 3. TAB L E 3 SIB3/SIB4 CE CO N F I G U R E D B Y OMCR Name Description Cid Cell ID QualMeas Measurement Quantity for Cell Selection and Reselection SIntraSearchP re Sintrasearch whether to configure the tag (Sintrasearch Configuration Tag) SIntraSearch Co-frequency measurement trigger threshold during cell reselection (Sintrasearch) SInterSearchP re Whether to configure the Sintersearch parameter (Sintersearch Configuration Tag) SInterSearch Inter-frequency measurement trigger threshold during cell reselection (Sintersearch) SSearchHCS Pre Whether to configure the SsearchHCS parameter (SsearchHCS Configuration Tag) SSearchHCS Measurement trigger threshold during HCS cell reselection (SsearchHCS) SSearchRat Inter-system measurement trigger threshold during cell reselection (Ssearch,RAT) SHCSRatPre Whether to configure the SHCS and RAT parameters (SHCS, RAT Configuration Tag) SHCSRat Inter-system cell measurement threshold during HCS cell reselection (SHCS,RAT) SLimitRat High-HCS-priority inter-system cell measurement threshold during cell reselection (Slimit,SearchRAT) QQualMin Minimum level of cell quality (Qqualmin) QRxLevMin Minimum receiving level threshold of cell 12 Confidential and Proprietary Information of ZTE CORPORATION
  • 16. Chapter 1 0BOverview Confidential and Proprietary Information of ZTE CORPORATION 13 Name Description (Qrxlevmin) DltaQRxLevMi nPr Whether to configure the minimum receiving level threshold gain of cell (DeltaQrxlevmin Configuration Tag) DltaQRxLevMi n Minimum receiving level threshold gain of cell (DeltaQrxlevmin) SIB5/SIB6 The SIB5 and SIB6 are used to configure the common transmission channel and common physical channel. The SIB5 fills the auxiliary common control PCH configuration parameters used in the IDLE state and the SIB6 fills the common PCH or sharing PCH configuration parameters used in the connection state. The UE in the IDLE state uses the configuration of SIB5 and in the connection state uses the configuration of SIB6. Without the SIB6, the contents of SIB5 are instead in the connection state. The parameter SIB5ORSIB6 (SIB5 broadcast or SIB6 broadcast) can be configured on the OMCR. Currently, the SIB6 does not broadcast and thus SIB5ORSIB6 is configured to 0 (SIB5 broadcast). The following CEs can be configured by OMCR. See Table 4. TAB L E 4 SIB5/SIB6 CE CO N F I G U R E D B Y OMCR Name Description TfsIndex Transmission format index (TFS Index), used to configure the transmission channel indications including a set of transmission format parameters such as channel type, transmission formation No., transmission block No., transmission time interval, coding rate and rate matching attribute ChType Channel Type TfNum Transport Format Number TrBlkNum Number of Transport Blocks RlcSize Transport Block Size TTI Transmission Time Interval CodingRate Coding Rate RateMatchAttr Rate Matching Attribute CRCSize CRC Size NiNumPerFrame Number of NI per Frame MichPwr MICH Power(dB) MichChCode MICH Channelisation Code No. SttdInd MICH STTD Indicator SttdInd AICH STTD Indicator
  • 17. Access&Paging Optimization 14 Confidential and Proprietary Information of ZTE CORPORATION Name Description ChCode AICH Channelisation Code No. AichTranTime AICH Transmission Timing AichPwr AICH Power SCCPCHUsage SCCPCH Usage SccpchOffset S-CCPCH Frame Timing Offset MplexPos Indicates whether the multiplexing position from the transmission channel to physical channel is fixed or flexible. PCHInd Indicator for S-CCPCH Carrying PCH DlScraCode S-CPICH Scrambling Code ChCode S-CPICH Channelisation Code No ChCode PICH Channelisation Code No. SttdInd PICH STTD Indicator CPCId Pich Common Physical Channel ID PichPwr PICH Power SttdInd PCCPCH STTD Indicator SttdInd S-CCPCH STTD Indicator Signature Available Signature AvailSubChanN um PRACH Available Subchannel Number AvailableSF PRACH Available SF PreamScraCode PRACH Preamble Scrambling Code PunctLimit Puncturing Limit SignalFach FACH Usage TfcsIndex Transmission format combination set index (Tfcs Index): Both S-CCPCH and PRACH are configured. CtfcNum Transmission format combination set No. (CTFC Number): Both S-CCPCH and PRACH are configured. Ctfc Transmission format combination ID (CTFC Id): Both S-CCPCH and PRACH are configured. DlScraCode (S-CCPCH) Scrambling Code DlChCodeNo S-CCPCH Channelisation Code No. SlotFmt S-CCPCH Slot Format SttdInd S-CCPCH STTD Active Indicator SIB7 The SIB7 serves as an update timer. The timer refers to the following formula:
  • 18. Chapter 1 0BOverview Expiration timer = MAX (32, SIB_REP * ExpirationTimeFactor) In the formula above, SIB_REP indicates the transmission period of SIB7, dynamically obtained during system broadcast schedule; ExpirationTimeFactor is a factor of SIB7 timeout and the system fixedly configures it to 2. The SIB7 can be transmitted by RNC or Node B, determined by configuration of the OMCR parameter SIB7Originator. To shorten the transmission time of SIB7, the system configures the Node B to transmit the SIB7 by default. The SIB7 fills the parameters as required during UE calculating the initial power of PRACH preamble. The following CEs can be configured by OMCR. See Table 5. TAB L E 5 SIB7 CE CO NF IG U R E D B Y OMCR Name Description DynPstLevelInit PRACH dynamic permanence-level initial value SIB11/SIB12 The SIB11 and SIB12 configure the measurement control information of cell. The SIB11 configures the measurement control information needed by the UE in the IDLE state, while the SIB12 configures the measurement control information needed by the UE in the connection status on FACH. The parameter Sib11orSib12 can be configured on the OMCR. Currently, the SIB12 does not broadcast. Thus, the UE in the connection state also uses the configuration information of SIB11 and the parameter value configured on the OMCR is 0 (broadcast over the SIB11). For related parameters, refer to ZTE UMTS Idle Mode and Common channel behavior. SIB15 The SIB15 includes auxiliary GPS information, such as DGPS, ephemeris and almanac information, UTC and ionization update information, cell location information as well as whether to encrypt the information being transmitted. Refer to ZTE UMTS Location Service feature description. Currently, the SIB15 does not broadcast. SIB18 The SIB18 fills the PLMN tags of neighbor cells considered by the UE in the idle and connection state. The following CEs can be configured by OMCR. See Table 6 and Table 7. Confidential and Proprietary Information of ZTE CORPORATION 15
  • 19. Access&Paging Optimization TAB L E 6 SIB18 CE CO N FI G U R E D B Y OMCR (IN T R A-S Y S T EM CE L L IN F O RM AT I O N ) Name Description NMCC Mobile Country Code of Neighboring Cell NMNC Mobile Network Code of Neighboring Cell TAB L E 7 SIB3/SIB4 CE CO N F I G U R E D IN OMCR (IN TE R -S Y S T EM CE L L IN F O RM AT I O N ) Name Description MCC Mobile Country Code of Neighboring GSM Cell MNC Mobile Network Code of Neighboring GSM Cell RRC Connection Establishment and Release RRC connection establishment is divided into two scenarios:  Establishment on DCH  Establishment on CCH Figure 2 illustrates the flow of RRC connection establishment. 16 Confidential and Proprietary Information of ZTE CORPORATION
  • 20. Chapter 1 0BOverview FI G U R E 2 RRC CONNECTION ESTABLISHMENT FLOW RRC Connection Establishment on DCH When receiving the RRC CONNECTION REQUEST message from the UE, the RNC determines which channel used to establish the RRC connection according to configuration of the OMCR parameter “InitRrcOnDch”. If the “InitRrcOnDch” value is set to 0 (DCH-forced and using common signaling) or 1 (DCH-forced and using high-speed Confidential and Proprietary Information of ZTE CORPORATION 17
  • 21. Access&Paging Optimization signaling), the RNC establishes the RRC connection on DCH. If the “InitRrcOnDch” value is set to 3 (not forced, using common signaling for DCH) or 4 (not forced, using high-speed signaling for DCH), the RNC decides according to Establishment_cause of RRC connection reported in RRC CONNECTION REQUEST. If Establishment_cause is of establishing a service, for example, UE originates call as a caller, then the RNC first selects DCH to establish the RRC connection. The cells required to establish radio links is calculated by the inter-frequency load balance algorithm. The RNC establishes the radio link on the lub interface. After successfully establishing the radio link, the RNC transmits the RRC CONNECTION SETUP message to the UE. If the OMCR parameter “InitRrcOnDch” is configured to the high-speed signaling, the RNC fills 13.6 K high-speed SRB in Dynamic Transport Format Information of RRC CONNECTION SETUP; or else, the RNC fills 3.4 K common SRB. Suppose the 13.6 K high-speed SRB is established, delete RNC reconfigures to 3.4 K SRB at the starting of RAB assignment. After receiving the RRC CONNECTION SETUP COMPLETE message from the UE, the RNC successfully sets up the RRC connection. The establishment process ends. RRC Connection Establishment on CCH When receiving the RRC CONNECTION REQUEST message from the UE, the RNC determines which channel to be used to establish the RRC connection according to configuration of the OMCR parameter “InitRrcOnDch”. If the “InitRrcOnDch” value is set to 2 (FACH-forced), the RNC establishes the RRC connection on FACH. If the “InitRrcOnDch” value is set to 3 (not forced, using common signaling on DCH) or 4 (not forced, using high-speed signaling on DCH), the RNC decides according to Establishment_cause of RRC connection reported in RRC CONNECTION REQUEST. If the RNC immediately originates services after RRC connection establishment (for example, the Establishment_cause value is Originating Conversational Call), the RNC establishes the RRC connection on DCH. If the RNC only accomplishes the flow such as LA update after RRC connection establishment but does not establish services (for example, the Establishment_cause value is registration), the RNC selects the common channel bearer signaling. According to Initial UE Identify of UE, the RNC select SCCPCH: Index of selected SCCPCH" = “Initial UE Identity” mod K; among them, K indicates the SCCPCH number bearing FACH in the cell. On the selected SCCPCH, the RNC transmits the RRC CONNECTION SETUP message to the UE and delivers SRB configuration. 18 Confidential and Proprietary Information of ZTE CORPORATION
  • 22. Chapter 1 0BOverview After receiving the RRC CONNECTION SETUP COMPLETE message from the UE, the RNC successfully establishes the RRC connection. The establishment process ends. Abnormal Process Handling of RRC Connection Establishment Abnormal Process Handling of RRC Connection Establishment on DCH If radio link establishment fails, the RNC transmits the RRC CONNECTION REJECT message to the UE, involving the Wait time in this message to inform UE of the waiting time from receiving RRC CONNECTION REJECT to permitting to retransmit the access request. The waiting time can be configured by OMCR (Twait). If the RNC does not receive the RRC CONNECTION SETUP COMPLETE message from the UE within 5s (for the air interface message to be acknowledged, the RNC sets a 5s timer to wait for response), it deletes the radio link on the lub interface. The RRC connection fails to establish and the UE is still in the IDLE status. Abnormal Process Handling of RRC Connection Establishment on CCH When the RNC does not receive the RRC CONNECTION SETUP COMPLETE message from the UE within 5s, it indicates that RRC connection establishment fails and the UE is still in the IDEL status. RRC Connection Release The causes of triggering RRC connection release include the following: The service and NAS signaling connections are normally released. The Node B detects that radio link establishment is failed. The RNC detects that RLC connection is failed. The UE on DCH or FACH requests cell update, for the AM_RLC error indication (RB2, RB3 or RB4) value is TRUE. Or the UE on FACH transmits the CELL UPDATE message to the RNC, because of radio link failure or RLC unrecoverable error. Confidential and Proprietary Information of ZTE CORPORATION 19
  • 23. Access&Paging Optimization The UE on FACH or PCH does not communicate any message and data with the RNC within the specified time (T305+11 min.). The preceding situations trigger the release flow of RRC connection. Figure 3 illustrates the release flow of RRC connection. FI G U R E 3 RRC CO N N E C T IO N RE L E AS E FL O W In Figure 3,using the SRB1, the RNC transmits the RRC CONNECTION RELEASE message to the UE. To make the UE rapidly searching cell stations after entering the IDLE status, the RRC CONNECTION RELEASE message contains the GSM network and UMTS FDD network frequency-point information under the same PLMN control with the current cell, as well as the potential BCCH frequency range of surrounding the GSM cell and the potential transmission frequency range of surrounding UMTS cell. The involved frequency point information of the GSM network and FDD network includes: GSM band number (GsmBARangeNum), GSM frequency point upper limit (GsmURange[32]), GSM frequency point lower limit (GsmLRange[32]), FDD band number (FDDFreqRngNum), FDD UMTS frequency point lower limit (Luarfcn [8]) and FDD UMTS frequency point upper limit (Uuarfcn[8]). RRC Connection Release on DCH When the UE on DCH receives the RRC CONNECTION RELEASE message from the RNC, it transmits the RRC CONNECTION RELEASE COMPLETE message over the UM mode and meanwhile starts up the timer T308. When T308 expires, the UE retransmits RRC CONNECTION RELEASE COMPLETE, the retransmitting times determined by N308. T308 and N308 are all 20 Confidential and Proprietary Information of ZTE CORPORATION
  • 24. Chapter 1 0BOverview configured by OMCR. When the UE on FACH receives the RRC CONNECTION RELEASE message from the RNC, it transmits the RRC CONNECTION RELEASE COMPLETE message once. Receiving RRC CONNECTION RELEASE COMPLETE, the RNC releases the radio link on the lub interface. RRC Connection Release on CCH The RNC transmits the RRC CONNECTION RELEASE message to the UE on CCCH or on SRB2. When the UE on FACH receives the RRC CONNECTION RELEASE request from the RNC, it only transmits the RRC CONNECTION RELEASE COMPLETE message once on CCCH. Receiving RRC CONNECTION RELEASE COMPLETE, the RNC releases the local resources and RRC connection release is successful. Abnormal Process Handling of RRC Connection Release When the RNC transmits the RRC CONNECTION RELEASE message to the UE but does not receive the RRC CONNECTION RELEASE COMPLETE message from the UE, the RNC retransmits RRC CONNECTION RELEASE. The retransmitting times are determined by the maximum retransmitting number (NreTran ) of RRC CONNECTION RELEASE configured in the OMCR. When the RNC does still not receive RRC CONNECTION RELEASE COMPLETE within 5 s after retransmitting RRC CONNECTION RELEASE for NreTran, it assumes completion of RRC connection release and then releases the local resources. Paging Paging Flow According to different paging originators, paging is classified into the following as shown in Figure 4. Confidential and Proprietary Information of ZTE CORPORATION 21
  • 25. Access&Paging Optimization FI G U R E 4 PAG I N G FL O W  After receiving the paging from the CN, the SRNC delivers the Node B broadcast. The RNC transmits the PAGING TYPE1 to the UEs in the IDLE or PCH state and transmits the PAGING TYPE2 to the UEs in the CELL_FACH or CELL_DCH state.  Paging originated by the SRNC not over the lur interface or by the DRNC The RNC transmits the PAGING TYPE1 to the UEs in the IDLE or PCH state and transmits the PAGING TYPE2 to the UEs in the CELL_FACH or CELL_DCH state.  Paging originated by the SRNC, over the lur interface To request the DRNC to originate paging to the UE, the RNC transmits the Paging Request message to the DRNC over the RNSAP. PAGING TYPE 1 The RNC receives the paging from the CN and transmits the PAGING TYPE 1 to the UE in the IDLE or URA_PCH state on PCH. To promote the possibility of UE receiving the paging, the RNC repeatedly transmits PAGING TYPE 1 to the UE and the retransmitting times are configured by OMCR (PagingSendTime). The PCH has the corresponding PICH physical channel which 22 Confidential and Proprietary Information of ZTE CORPORATION
  • 26. Chapter 1 0BOverview transmits the Page Indicator (PI). Each PI corresponds to a group of UEs. The PI algorithm is as follows: PI = DRX Index mod Np Among: DRX Index = IMSI div 8192 Np: The number of PI included by one PICH radio frame can be configured by OMCR. By monitoring the UE’s own PI, the UE decides whether the network is paging itself. Each PICH frame can include the PIs of multi-UEs and the OMCR can configure all PIs (Np) included in each PICH. When each PICH frame includes more PIs, the transmission power (PichPwr) of PICH is being enhanced. The corresponding relation is as follows. PI No, per Frame Bit Repeat No. Transmission Power of PICH Related to CPICH 18 16 -7 36 8 -7 72 4 -5 144 2 -2 To save power, the UE in the IDLE and PCH states use the Discontinuous Reception (DRX) mode to monitor the PICH. By this method, the UE only needs to monitor the PI once within per DRX period. Each UE has its own Paging Occasion (PO). Therefore, the UE only monitors one PICH frame on the SFN corresponding to the PO and finds the PI of the frame’s own by the calculated PI. The RNC fills the PI information on the PICH according to the PO of the UE. For the FDD system, the DRX period is equal to 2k frame. In the OMCR, the RNC configures three types of DRX cycle length coefficients: CS-domain DRX cycle length coefficient (Kcs), PS-domain DRX cycle length coefficient (Kps) and UTRAN DRX cycle length coefficient (KUtran). Refer to the following calculation:  When the UE is in the IDLE state, by using CS-domain DRX cycle length coefficient (Kcs), PS-domain DRX cycle length coefficient (Kps) and DRX parameter (DRX cycle length coefficient) delivered by CN in the paging message, the RNC decides the K value within the DRX period. For the paging from the CS domain, K = Min (Kcs, Kps) For the paging from the PS domain, if the CN delivers the DRX Cycle Length Coefficient, then K is equal to Min (Kcs,Kps,DRX Cycle Length Coefficient); if the CN does not deliver the DRX Cycle Length Coefficient, then K is equal to Min (Kcs,Kps).  When the UE is in the PCH state, the RNC decides the K value by using CS-domain DRX cycle length coefficient Confidential and Proprietary Information of ZTE CORPORATION 23
  • 27. Access&Paging Optimization (Kcs), PS-domain DRX cycle length coefficient (Kps) and UTRAN DRX cycle length coefficient (KUtran) and DRX parameter (DRX cycle length coefficient) delivered by CN in the paging message. For the paging from the CS domain, K = Min (Kcs,KUtran) For the paging from the PS domain, if the CN delivers the DRX Cycle Length Coefficient in the paging message, then K is equal to Min (Kps,KUtran,DRX Cycle Length Coefficient); if the CN does not deliver the DRX Cycle Length Coefficient, then K is equal to Min (Kps, KUtran).  Refer to the PO calculation formula as follows: Paging Occasion = {(IMSI div N) mod (DRX cycle length div PBP)} * PBP + n * DRX cycle length + Frame Offset Among: N = SCCPCH channel number of intra-cell bearer PCH DRX cycle length = 2k frame; the K value refers to the preceding content. PBP = 1 n = SFN When the content of system broadcast updates, the RNC voluntarily originates PAGING TYPE 1 to inform the UEs in the IDLE and PCH states. The system cyclically transmits the PI on PICH within the whole DRX period. The K value of 2k of the DRX period is set to MAX (Kcs, Kps, KUtran). PAGING TYPE 2 When the UE is in the DCH or FACH state, the UTRAN originates the paging process and transmits the PAGING TYPE 2 message on DCCH. The UTRAN sets the paging cause in the Paging Cause of PAGING TYPE 2. Receiving PAGING TYPE 2, the UE in the DCH or FACH state starts up the receiving process of paging and reports the paging cause and paging record type identifier to the upper layer. UE Capacity Enquiry The RNC transmits the UE CAPABILITY ENQUIRY message to the UE to query the capacity information of UE. After receiving the message, the UE transmits the UE CAPABILITY INFORMATION message to the RNC; The RNC retransmits the UE CAPABILITY INFORMATION CONFIRM information for acknowledgment. See Figure 5. 24 Confidential and Proprietary Information of ZTE CORPORATION
  • 28. Chapter 1 0BOverview FI G U R E 5 UE CAP AC I T Y EN Q U I R Y As shown in Figure 5 , under the following scenarios, the RNC will query the UE capacity:  When the RNC needs to know of the UE capacity information, it establishes the UE CAPABILITY ENQUIRY information and transmits the message to the UE.  When the UE is in the connection mode and its capacity information changes, the UE transmits the UE CAPABILITY INFORMATION message to the RNC. The message includes the capacity information such as protocol version realized by UE (R99/R4/R5), whether to support HS-PDSCH, whether to support to concurrently read SCCPCH, DPCH and HS-PDSCH as well as to concurrently configure the DL capacity of HS-PDSCH and the physical layer classification of HS-DSCH, whether to support to estimate HS-PDSCH and HS-SCCH according to the dedicated pilot. After saving the UE capacity information, the RNC constructs the UE CAPABILITY INFORMATION CONFIRM message and transmits the message to the UE. If the RNC does not receive the CAPABILITY INFORMATION message from the UE within 5s, it assumes that the UE capacity information enquiry is failed. Radio Connection Monitoring While the radio connection state of UE having the established RRC, if the poor radio quality or other causes make the RNC to decide that the radio connection between a UE and network has been actually interrupted, the RNC immediately releases all resources that assigned to the UE, including all RB resources having established services as well as release of RRC connection and lu interface connection. The RAN supports the following modes to monitor the radio connection state:  The Node B monitors the RL state. It is suitable for the UE on DCH. While monitoring the radio link state of UE, the Node B finds UL RL out of frame or other causes resulting in the radio link unavailable. the Node B Confidential and Proprietary Information of ZTE CORPORATION 25
  • 29. Access&Paging Optimization transmits the RL failure message to the RNC. The interval should be 10s from UL out of frame to the time the Node B transmits the RL failure message. FI G U R E 6 RAD I O LI N K FAI L U R E CRNC Node B RADIO LINK FAILURE INDICATION If the cause value of RADIO LINK FAILURE INDICATION is unrecoverable, or the cause value is recoverable but the RNC does not receive RADIO LINK RESTORE INDICATION within 10s, the RNC assumes that the radio link of the UE is interrupted.  The RNC monitors the connection state of RLC. After establishing the RRC connection, if the RNC has transmitted the message on the RLC layer but does not receive the UE response, it will retransmit the message. When the retransmitting number reaches 15, the RLC layer get reset. Once the Once the number reset reaches 6. the RNC assumes user-plane processing to be incorrect. Depending on this method, the RNC can monitor all RLC connections using the AM mode (the AM mode is used for the SRB). Further, the RNC can also monitor all UEs in the connection state.  The RNC monitors the cell update message of UE. The UE on DCH or FACH transmits the CELL UPDATE message to the RNC, of which the AM_RLC error indication (RB2, RB3 or RB4) value is true. The UE on FACH transmits the CELL UPDATE message to the RNC, carrying the cause value such as Radio link failure or RLC unrecoverable error. When the received CELL UPDATE message from the UE indicates the preceding two errors, the RNC assumes the radio link of the UE is interrupted.  The RNC monitors the keep-alive timer of UE. For the UE on FACH or PCH, the RNC does not exchange any message and data with the UE within the specified duration (T305+11 min.) and assumes the UE radio connection interrupted. When monitoring the radio connection of a UE that interrupted by the preceding four approaches, the RNC releases the radio resources and transmits the lu Release Request message to the CN via the lu interface to inform the CN for releasing the corresponding RAB resources. 26 Confidential and Proprietary Information of ZTE CORPORATION
  • 30. Chapter 1 0BOverview Radio Connection Reestablishment During link interruption caused by poor radio quality, the UE on DCH reports CellUpdate message, carrying the cause value, and the RNC attempts to reestablish radio resources for the UE, as shown in Figure Figure 7 FI G U R E 7 CAL L RE E S T AB L I S HM E N T When the Cell update cause reported in the CELL UPDATE message is Radio link failure (for example, T313 expiration) or RLC unrecoverable error (for example, the UL RB is reset on the RLC layer due to multiple data retransmission), and the value of AM_RLC error indication (RB2, RB3 or RB4) is FALSE, the RNC originates reestablishment of radio link. To delete the existing RL of the UE: If the RL belongs to the SRNC, the SRNC deletes the lub-interface RL process; if the belongs to other RNCs, the SRNC informs the DRNC of deleting the radio link. The RNC reconfigures the RB for the UE, reselects a channel and reconfigures the signaling and service parameters based on the selected channel. Meanwhile, it establishes the radio link via the lub interface and then transmits the contents of physical channel Confidential and Proprietary Information of ZTE CORPORATION 27
  • 31. Access&Paging Optimization 28 Confidential and Proprietary Information of ZTE CORPORATION and RB reconfiguration to the UE through the CELL UPDATE CONFIRM message. To ensure the UE properly receiving the message, the RNC consecutively transmits the message three times with the identical RRC SNs. According to the contents delivered in the CELL UPDATE CONFIRM message, the UE performs the physical channel reconfiguration or RB reconfiguration. After completing reconfiguration, the UE responds the Physical Channel Reconfiguration Complete or RB Reconfiguration Complete message.
  • 32. C h a p t e r 2 Parameters and Configuration System Information Broadcast Parameters SIB1 Parameter List Field Name Description UE Timers and Constants in idle mode T300 Waiting Time After UE Sending RRC CONNECTION SETUP REQUEST Message(T300) N300 Maximum Number of Retransmissions of the RRC CONNECTION REQUEST Message (N300) T312Idle T312 in Idle Mode)(Waiting Time for Receiving "In Sync" from L1 in Idle Mode (T312 in Idle Mode) N312Idle Maximum Number of "In Sync" Received from L1 in Idle Mode (N312 in Idle Mode) UE Timers and constants in connected mode T302 Waiting Time After UE Sending CELL/URA UPDATE Message(T302) N302 Maximum Number of Retransmissions of the CELL/URA UPDATE Message (N302) T304 Waiting Time After UE Sending UE CAPABILITY INFORMATION Message(T304) N304 Maximum Number of Retransmissions of the UE CAPABILITY INFORMATION Message (N304) Confidential and Proprietary Information of ZTE CORPORATION 29
  • 33. Access&Paging Optimization 30 Confidential and Proprietary Information of ZTE CORPORATION Field Name Description T305 Period of Cell/URA Update When UE is in CELL_FACH/CELL_PCH/ URA_PCH State(T305)(min) T307 Waiting Time for Cell Reselection After UE is out of Service(T307) T308 Waiting Time After Sending RRC CONNECTION RELEASE COMPLETE Message in CELL_DCH State(T308) T309 Waiting Time After Requesting Connection Establishment in Other System (eg. GSM) (T309) T312Connected T312 in Connected Mode)(Waiting Time for Receiving "In Sync" from L1 in Connected Mode (T312 in Connected Mode) N312Connected N312 in Connected Mode)(Maximum Number of "In Sync" Received from L1 in Connected Mode (N312 in Connected Mode) T313 Waiting Time After DPCCH Established in CELL_DCH State Losing Synchronization (T313) N313 Maximum Number of Successive "Out of Sync" Received from L1(N313) T314 Waiting Time for Completion of Cell Update When Radio Link Fails and Radio Bearer(s) Associated with T314 Exist (T314) T315 Waiting Time for Completion of Cell Update When Radio Link Fails and Radio Bearer(s) Associated with T315 Exist (T315) N315 Maximum Number of Successive "In Sync" Received from L1 During T313 is Activated ( N315) T316 Waiting Time for Cell Selection/Reselection After UE is out of Service in CELL_PCH/URA_PCH State(T316)(s) MCC Mobile Country Code T317 Waiting Time for Cell Selection/Reselection After UE is out of Service in CELL_FACH State(T317) CN NAS Information MNC Mobile Network Code CnDomain CN Domain Supported T3212Cs T3212(hour) ATTIndCs IMSI Attach and Detach Indicator NMOPs Network Mode of Operation Kcs CS Domain DRX Cycle Length Coefficient Kps PS Domain DRX Cycle Length Coefficient MbmsModPrdCoeff Modification Period Coefficient for MBMS
  • 34. Chapter 2 1BParameters and Configuration SIB1 Parameter Configuration T300 Wireless Parameter Full Name Waiting Time After UE Sending RRC CONNECTION SETUP REQUEST Message (T300)(ms) Abbreviation T300 Value Range and Step Length OMCR:(100, 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800, 2000, 3000, 4000, 6000, 8000) ms RNC: [0,14]ms Unit ms Default Value (Note) 1000ms OMC Path:View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Waiting Time After UE Sending RRC CONNECTION SETUP REQUEST Message(T300) Configuration description: Beyond the time specified by the parameter, When UE does not receive the response message yet, it will decide timeout and retransmits the RRC Connection Setup Request message. To reduce the waiting time is to shorten the duration of RRC connection setup under the condition of good air-interface quality. N300 Wireless Parameter Full Name Maximum Number of Retransmissions of the RRC CONNECTION REQUEST Message(N300) Abbreviation N300 Value Range and Step Length [0,7] Unit Null Default Value (Note) 3 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Maximum Number of Retransmissions of the RRC CONNECTION REQUEST Message (N300) Confidential and Proprietary Information of ZTE CORPORATION 31
  • 35. Access&Paging Optimization Configuration description: When the retransmission number of RRC connection request exceeds the maximum, call drop is decided. By increasing the value is to reduce the possibility of call drop, but meanwhile to add burden of air interfaces. T312Idle Wireless Parameter Full Name Waiting Time for Receiving "In Sync" from L1 in Idle Mode(T312 in Idle Mode)(s) Abbreviation T312Idle Value Range and Step Length [1,15]s Unit s Default Value (Note) 2s OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Waiting Time for Receiving "In Sync" from L1 in Idle Mode (T312 in Idle Mode) Configuration description: By decreasing the waiting time is to quicken signaling exchange with the L1 layer. However, under the condition of poor air-interface quality, the flow is easy to fail. N312Idle Wireless Parameter Full Name Maximum Number of “In Sync” Received from L1 in Idle Mode(N312 in Idle Mode) Abbreviation N312Idle Value Range and Step Length OMCR: (1, 2, 4, 10, 20, 50, 100, 200, 400, 600, 800, 1000) RNC:(0,11) Unit Null Default Value (Note) 10 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Maximum Number of "In Sync" Received from L1 in Idle Mode (N312 in Idle Mode) Configuration description: The less number of synchronization decision is easier to decide whether synchronization is completed. However, the false synchronization is generated greatly, when 32 Confidential and Proprietary Information of ZTE CORPORATION
  • 36. Chapter 2 1BParameters and Configuration the number of synchronization decision increases, the reliability is correspondingly enhanced. However, it costs more time. T302 Wireless Parameter Full Name Waiting Time After UE Sending CELL/URA UPDATE Message(T302)(ms) Abbreviation T302 Value Range and Step Length OMCR:(100,200,400,600,800,1000,1200,1400,1600, 1800,2000,3000,4000,6000,8000)ms RNC:(0,14)ms Unit ms Default Value (Note) 1000ms OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Waiting Time After UE Sending CELL/URA UPDATE Message(T302) Configuration description: After the waiting time expires, the UE does not receive the response message yet, and decided timeout. When the waiting time is set longer, the possibility of timeout is less but the efficiency of flow processing is reduced. N302 Wireless Parameter Full Name Maximum Number of Retransmissions of the CELL/URA UPDATE Message(N302) Abbreviation N302 Value Range and Step Length [0,7] Unit Null Default Value (Note) 2 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Maximum Number of Retransmissions of the CELL/URA UPDATE Message (N302) Configuration description: The UE decides that the flow fails after the maximum number of retransmission Exceeds the threshold. If the set value is less, the failure is generated more easily. Confidential and Proprietary Information of ZTE CORPORATION 33
  • 37. Access&Paging Optimization T304 Wireless Parameter Full Name Waiting Time After UE Sending UE CAPABILITY INFORMATION Message(T304)(ms) Abbreviation T304 Value Range and Step Length OMCR:(100, 200, 400, 1000,2000)ms RNC:(0,4)ms Unit ms Default Value (Note) 2000ms OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Waiting Time After UE Sending UE CAPABILITY INFORMATION Message(T304) Configuration description: The UE decides timeout when the response message not received beyond the waiting time. If the set value is less, the failure is generated more easily. N304 Wireless Parameter Full Name Maximum Number of Retransmissions of the UE CAPABILITY INFORMATION Message(N304) Abbreviation N304 Value Range and Step Length [0,7] Unit Null Default Value (Note) 2 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Maximum Number of Retransmissions of the UE CAPABILITY INFORMATION Message (N304) Configuration description: The UE decides that the flow is failed after the maximum number of retransmission Exceeds the threshold. If the set value is less, the failure is generated more easily. 34 Confidential and Proprietary Information of ZTE CORPORATION
  • 38. Chapter 2 1BParameters and Configuration T305 Wireless Parameter Full Name Period of Cell/URA Update When UE is in CELL_FACH/CELL_PCH/ URA_PCH State(T305)(min) Abbreviation T305 Value Range and Step Length OMCR:(noUpdateNo update,5,10,30,60,120,360,720)min RNC:(0,7)min step1,0 indicates No update Unit min Default Value (Note) 5min OMC path:View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information -> Period of Cell/URA Update When UE is in CELL_FACH/CELL_PCH/ URA_PCH State(T305)(min) Configuration description: The lesser set value cause more frequent periodical update and URA update. T307 Wireless Parameter Full Name Waiting Time for Cell Reselection After UE is out of Service(T307)(s) Abbreviation T307 Management Object ueCnst Value Range and Step Length OMCR:(5,10, 15,20,30,40,50)s RNC:[0,6]s Unit s Default Value (Note) 5s OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Waiting Time for Cell Reselection After UE is out of Service(T307) Configuration description: The lesser set value makes UE to reaccess the network faster, however, it increases the UE and system loads. Confidential and Proprietary Information of ZTE CORPORATION 35
  • 39. Access&Paging Optimization T308 Wireless Parameter Full Name Waiting Time After Sending RRC CONNECTION RELEASE COMPLETE Message in CELL_DCH State(T308)(ms) Abbreviation T308 Value Range and Step Length OMCR:(40, 80, 160, 320)ms RNC:(0,3)ms Unit ms Default Value (Note) 80ms OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Waiting Time After Sending RRC CONNECTION RELEASE COMPLETE Message in CELL_DCH State(T308) T309 Wireless Parameter Full Name Waiting Time After Requesting Connection Establishment in Other System(eg.GSM)(T309)(s) Abbreviation T309 Value Range and Step Length [1,8]s Unit s Default Value (Note) 3s OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Waiting Time After Requesting Connection Establishment in Other System(eg. GSM) (T309) Configuration description: Timeout is decided when the message is not received yet even the waiting time expiers. T312Connected Wireless Parameter Full Name Waiting Time for Receiving "In Sync" from L1 in Connected Mode(T312 in Connected Mode)(s) 36 Confidential and Proprietary Information of ZTE CORPORATION
  • 40. Chapter 2 1BParameters and Configuration Confidential and Proprietary Information of ZTE CORPORATION 37 Wireless Parameter Abbreviation T312Connected Value Range and Step Length [1,15]s Unit s Default Value (Note) 1s OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Waiting Time After Sending RRC CONNECTION RELEASE COMPLETE Message in CELL_DCH State(T308) Configuration description: Timeout is decided when the message is not received yet even the waiting time expiers N312Connected Wireless Parameter Full Name Maximum Number of "In Sync" Receive from L1 in Connected Mode(N312 in Connected Mode) Abbreviation N312Connected Value Range and Step Length OMCR:(1,2,4,10, 20,50,100,200, 400,600,800,1000) RNC:(0,11) Unit None Default Value (Note) 1 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Maximum Number of "In Sync" Received from L1 in Connected Mode (N312 in Connected Mode) Configuration description: When the value is set low, the decision on synchronization completion is simpler, but the probability of the false synchronization rises. When the value is set high, the reliability is enhanced and it also costs much time. T313 Wireless Parameter Name Full Name Waiting Time After DPCCH Established in CELL_DCH State Losing Synchronization(T313)(s)
  • 41. Access&Paging Optimization 38 Confidential and Proprietary Information of ZTE CORPORATION Wireless Parameter Name Abbreviation T313 Value Range and Step Length [0,15]s Unit None Default Value (Note) 3s OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Waiting Time After DPCCH Established in CELL_DCH State Losing Synchronization (T313) Configuration description: Timeout is decided when the message is not received yet even the waiting time expiers. N313 Wireless Parameter Full Name Maximum Number of Successive "Out of Sync" Received from L1(N313) Abbreviation N313 Value Range and Step Length OMCR: (1, 2, 4, 10, 20, 50, 100, 200) RNC:[0,7] Unit None Default Value (Note) 20 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Maximum Number of Successive "Out of Sync" Received from L1(N313) Configuration description: When the value is set low, the decision on synchronization completion is simpler, but the probability of the false synchronization rises. When the value is set high, the reliability is enhanced and it also costs much time. T314 Wireless Parameter Full Name Waiting Time for Completion of Cell Update When Radio Link Fails and Radio Bearer(s) Associated with T314 Exist(T314)(s) Abbreviation T314 Value Range and OMCR: (0, 2, 4, 6, 8, 12, 16, 20)s
  • 42. Chapter 2 1BParameters and Configuration Confidential and Proprietary Information of ZTE CORPORATION 39 Wireless Parameter Step Length RNC:[0,7] Unit s Default Value (Note) 4s OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Waiting Time for Completion of Cell Update When Radio Link Fails and Radio Bearer(s) Associated with T314 Exist (T314) Configuration description: Timeout is decided when the message is not received yet even the waiting time expiers. T315 Wireless Parameter Name Full Name Waiting Time for Completion of Cell Update When Radio Link Fails and Radio Bearer(s) Associated with T315 Exist(T315)(s) Abbreviation T315 Value Range and Step Length OMCR:(0,10, 30, 60, 180, 600, 1200, 1800)s RNC: [0,7] Unit s Default Value (Note) 30s OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Waiting Time for Completion of Cell Update When Radio Link Fails and Radio Bearer(s) Associated with T315 Exist (T315) Configuration description: Timeout is decided when the message is not received yet even the waiting time expiers N315 Wireless Parameter Full Name Maximum Number of Successive "In Sync" Received from L1 During T313 is Activated(N315) Abbreviation N315 Value Range and Step Length OMCR: (1, 2, 4, 10, 20, 50, 100, 200, 400, 600, 800, 1000) RNC:[0,11] Unit None Default Value 1
  • 43. Access&Paging Optimization 40 Confidential and Proprietary Information of ZTE CORPORATION Wireless Parameter (Note) OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Maximum Number of Successive "In Sync" Received from L1 During T313 is Activated ( N315) Configuration description: When the value is set low, the decision on synchronization completion is simpler, but the probability of the false synchronization rises. When the value is set high, the reliability is enhanced and it also costs much time. T316 Wireless Parameter Full Name Waiting Time for Cell Selection/Reselection After UE is out of Service in CELL_PCH/URA_PCH State(T316)(s) Abbreviation T316 Value Range and Step Length OMCR:(0, 10, 20, 30, 40, 50, Infinity)s RNC: [0,6]s Unit s Default Value (Note) 0s OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information -> Waiting Time for Cell Selection/Reselection After UE is out of Service in CELL_PCH/URA_PCH State(T316)(s) Configuration description: Timeout is decided when the message is not received yet even the waiting time expiers. T317 Wireless Parameter Full Name Waiting Time for Cell Selection/Reselection After UE is out of Service in CELL_FACH State(T317)(s) Abbreviation T317 Value Range and Step Length OMCR:(0,10, 30, 60, 180, 600, 1200, 1800)s RNC:[0,7] Unit Null Default Value (Note) 0s
  • 44. Chapter 2 1BParameters and Configuration OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->UE counter and timer constant information ->Waiting Time for Cell Selection/Reselection After UE is out of Service in CELL_FACH State(T317) Configuration description: Timeout is decided when the message is not received yet even the waiting time expiers. T3212Cs Wireless Parameter Full Name T3212(hour) Abbreviation T3212Cs Description Timer of periodic location update Management Object CnInfo Value Range and Step Length OMCR:(0,[0.1,25.5])hours Step0.1hour 0: No Periodic Updating RNC:D=P*10 [0,255] Unit Null Default Value (Note) 1hour OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->CN NAS Information ->timer of Periodic location update Configuration description: If the set value is less, the roprt location comes close to real location. Connection Establishment and Release Parameters Parameter List Name Description NReTran Maximum number of retransmission of the RRC CONNECTION RELEASE Twait Wait Time for RRC Connection Reestablishment(s) Confidential and Proprietary Information of ZTE CORPORATION 41
  • 45. Access&Paging Optimization 42 Confidential and Proprietary Information of ZTE CORPORATION Name Description N308 N308 FDDFreqRngNum Number of FDD UMTS Frequency Range GsmBARangeNum Number of GSM BA Range GsmLRange[32] Wait Time for RRC Connection Reestablishment(s) GsmURange[32] GSM Upper Range Luarfcn [32] UARFCN(Nlow) Uuarfcn[32] UARFCN(Nupper) InitRrcLBSw Load Balance Switch of Initial RRC Procedure InitRrcOnDch Type of Transport Channel for Initial RRC Connection Setup Parameter Configuration NReTran Wireless Parameter Name Full Name Maximum number of retransmission of the RRC CONNECTION RELEASE Abbreviation NReTran Value Range and Step Length [1,10] Unit Null Default Value (Note) 3 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->RNC Radio Resource Management ->Maximum Number of Retransmissions of the RRC CONNECTION RELEASE Message Configuration description: The maximum number RNC retransmitting the RRC CONNECTION RELEASE when the UE does not respond the RRC CONNECTION RELEASE COMPLETE message. The less set value cause easy generation of flow failure. Twait Wireless Parameter Full Name Wait Time for RRC Connection Reestablishment(s)
  • 46. Chapter 2 1BParameters and Configuration Confidential and Proprietary Information of ZTE CORPORATION 43 Wireless Parameter Abbreviation Twait Description The waiting time from UE receiving the RRC CONNECTION REJECT message to retransmitting the access request message; The parameter is carried in the RRC CONNECTION REJECT message to the UE. Value Range and Step Length [0,15]s Unit s Default Value (Note) 5s OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->RNC Radio Resource Management ->Wait Time for RRC Connection Reestablishment Configuration description: The less set value cause more easy retransmission flow of access request is triggered. Meanwhile, the possibility of failure is enhanced. N308 Wireless Parameter Full Name N308 Abbreviation N308 Description Maximum of retransmitting the RRC Connection Release Complete message Value Range and Step Length [1,8] Unit Null Default Value (Note) 1 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->RNC Radio Resource Management ->N308 Configuration description: The less set value case more easy flow failure generation. FDDFreqRngNum Wireless Parameter Full Name Number of FDD UMTS Frequency Range
  • 47. Access&Paging Optimization 44 Confidential and Proprietary Information of ZTE CORPORATION Wireless Parameter Abbreviation FDDFreqRngNum Description This parameter indicates the UTRAN FDD frequency number under the PLMN control. While returning to the IDLE state from the RRC connection state, the UE selects a cell to station. To make the UE quickening the speed of cell search, the UTRAN carries this parameter in the RRC CONNECTION RELEASE message, indicating the possible transmission frequency range of surrounding cells. Value Range and Step Length [0,32] Unit Null Default Value (Note) 2 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->RPLMN Range Information -> Number of FDD UMTS Frequency Range GsmBARangeNum Wireless Parameter Full Name Number of GSM BA Range Abbreviation GsmBARangeNum Description This parameter indicates the number of GSM BCCH assignment table. When the UTRAN and BSS networks belong to the same PLMN, the UE selects a cell to station while returning to the IDLE state from the RRC connection state. To make the UE quickening the speed of cell search, the UTRAN carries this parameter in the RRC CONNECTION RELEASE message, indicating the possible BCCH frequency range of surrounding GSM cells. Value Range and Step Length [0,32] Unit Null Default Value (Note) 3 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->RPLMN Range Information -> Number of GSM BA Range
  • 48. Chapter 2 1BParameters and Configuration GsmLRange[32] Wireless Parameter Full Name GSM Lower Range Abbreviation GsmLRange[32] Description This parameter indicates the frequency lower limit of a GSM BCCH allocation table under the PLMN control. When the UTRAN and BSS networks belong to the same PLMN, the UE selects a cell to station while returning to the IDLE state from the RRC connection state. To make the UE quickening the speed of cell search, the UTRAN carries this parameter in the RRC CONNECTION RELEASE message, indicating the possible BCCH frequency range of surrounding GSM cells. Value Range and Step Length [512,885],[0,124] and [975,1023] Description: DCS1800 band (ARFCN = [512,885]) GSM900 band (ARFCN =[0,124],[975,1023]). Unit Null Default Value (Note) [512, 0,975] OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->RPLMN Range Information ->GSM Lower Range Configuration description: The GSM Lower Range should be consistent with the GSM Upper Range. GsmURange[32] Wireless Parameter Full Name GSM Upper Range Abbreviation GsmURange[32] Description This parameter indicates the frequency upper limit of a GSM BCCH allocation table under the PLMN control. When the UTRAN and BSS networks belong to the same PLMN, the UE selects a cell to station while returning to the IDLE state from the RRC connection state. To make the UE quickening the speed of cell search, the UTRAN carries this parameter in the RRC CONNECTION RELEASE message, indicating the possible BCCH frequency range of surrounding GSM cells. Value Range and Step Length [512 ,885],[0,124] and [975,1023] Description: DCS1800 band (ARFCN = [512,885]) Confidential and Proprietary Information of ZTE CORPORATION 45
  • 49. Access&Paging Optimization 46 Confidential and Proprietary Information of ZTE CORPORATION Wireless Parameter GSM900 band (ARFCN =[0,124],[975,1023]). Unit Null Default Value (Note)  885  124  1023 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->RPLMN Range Information ->GSM Upper Range Configuration description: The GSM Upper Range should be consistent with the GSM Lower Range. Luarfcn [8] Wireless Parameter Full Name UARFCN(Nlow) Abbreviation Luarfcn [8] Description This parameter indicates the lower limit of a UTRAN FDD frequency range under the PLMN control. While returning to the IDLE state from the RRC connection state, the UE selects a cell to station. To make the UE quickening the speed of cell search, the UTRAN carries this parameter in the RRC CONNECTION RELEASE message, indicating the possible transmission frequency range of surrounding cells. Value Range and Step Length Band1:[10562,10838] Band2:[9662,9938],412, 437,462, 487, 512,537,562, 587, 612,637,662, 687 Band3:[1162,1513] Band5:[4357,4458],1007,1012,1032,1037,1062,1 087 Band6:[4387,4413],1037,1062 Band8:[2937,3088] Unit Null Default Value (Note) Band1:[10562,9662] OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->RPLMN Range Information ->UARFCN (Nlow) Uuarfcn[8] Wireless Parameter
  • 50. Chapter 2 1BParameters and Configuration Confidential and Proprietary Information of ZTE CORPORATION 47 Wireless Parameter Full Name UARFCN(Nupper) Abbreviation Uuarfcn[8] Description This parameter indicates the upper limit of a UTRAN FDD frequency range under the PLMN control. While returning to the IDLE state from the RRC connection state, the UE selects a cell to station. To make the UE quickening the speed of cell search, the UTRAN carries this parameter in the RRC CONNECTION RELEASE message, indicating the possible transmission frequency range of surrounding cells. Value Range and Step Length Band1:[10562,10838] Band2:[9662,9938],412, 437,462, 487, 512,537, 562, 587,612, 637,662, 687 Band3:[1162,1513] Band5:[4357,4458],1007,1012,1032,1037, 1062,1087 Band6:[4387,4413],1037,1062 Band8:[2937,3088] Unit Null Default Value (Note) Band1:[10838,9938] OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->RPLMN Range Information ->UARFCN(Nupper) InitRrcLBSw Wireless Parameter Full Name Load Balance Switch of Initial RRC Procedure Abbreviation InitRrcLBSw Description Load balance switch of RRC initial-access procedure Value Range and Step Length 0: Off 1: On only for inter-frequency 2: On only for inter-system 3: On for both inter-frequency and inter-system Unit Null Default Value (Note) 1: On only for inter-frequency OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->UtranCell->Advanced Parameter Manage ->Balance Information ->Load Balance Switch of Initial RRC Procedure
  • 51. Access&Paging Optimization InitRrcOnDch Wireless Parameter Full Name Type of Transport Channel for Initial RRC Connection Setup Abbreviation InitRrcOnDch Description rncFunction Value Range and Step Length 0: DCH –forced and using common signaling 1: DCH-forced and using high-speed signaling 2: FACH-forced 3: Unforced, using common signaling for DCH 4: Unforced, using high-speed signaling for DCH Unit nULL Default Value (Note) DCH-forced and using high-speed signaling OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->RNC Radio Resource Management ->Type of Transport Channel for Initial RRC Connection Setup Paging Parameter Parameter List Name Description KUtran UTRAN DRX Cycle Length Coefficient PagingSendTimes Sending Times of Paging Message Kcs CS Domain DRX Cycle Length Coefficient Kps PS Domain DRX Length Coefficient Np Number of Paging Indicators per PICH Frame PichPwr PICH Power Parameter Configuration KUtran Wireless Parameter 48 Confidential and Proprietary Information of ZTE CORPORATION
  • 52. Chapter 2 1BParameters and Configuration Confidential and Proprietary Information of ZTE CORPORATION 49 Wireless Parameter Full Name UTRAN DRX Cycle Length Coefficient Abbreviation KUtran Description This parameter is used to calculate the paging occasion which is a constant required for monitoring the PICH period. The DRX period is 2 k frame. Under the connection mode, the UE selects UTRAN DRX cycle length coefficient. The minimum of the attached CN domain specific DRX cycle length coefficient is k. Value Range and Step Length [3,9] Unit Null Default Value (Note) 6 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->RNC Radio Resource Management ->UTRAN DRX Cycle Length Coefficient PagingSendTimes Wireless Parameter Full Name Sending Times of Paging Message Abbreviation PagingSendTimes Description Maximum sending times of paging message Value Range and Step Length [1,6] Unit Null Default Value (Note) 3 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->UtranCell->Advanced Parameter Manage ->UtranCell ->Sending Times of Paging Message Configuration description: The number of retransmitting the paging message is not response to the system. The success rate of paging rises with increase of the parameter value. However, the Uu-interface message is also correspondingly increased, enlarging Uu-interface consuption. Kcs Wireless Parameter Full Name CS Domain DRX Cycle Length Coefficient
  • 53. Access&Paging Optimization 50 Confidential and Proprietary Information of ZTE CORPORATION Wireless Parameter Abbreviation Kcs Value Range and Step Length [6,9] Unit Null Default Value (Note) 6 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->CN NAS information ->CS Domain DRX Cycle Length Coefficient Kps Wireless Parameter Full Name PS Domain DRX Length Coefficient Abbreviation Kps Value Range and Step Length [6,9] Unit Null Default Value (Note) 6 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->Advanced Parameter Manage ->CN NAS information ->PS Domain DRX Cycle Length Coefficient Np Wireless Parameter Full Name Number of Paging Indicators per PICH Frame Abbreviation Np Value Range and Step Length [18,36,72,144] Unit Null Default Value (Note) 72 OMC path: View->Configuration Management->RNC NE->RNC Radio Resource Management->UtranCell->Advanced Parameter Manage ->PICH ->Number of Paging Indicators per PICH Frame
  • 54. Chapter 2 1BParameters and Configuration Confidential and Proprietary Information of ZTE CORPORATION 51 Configuration description: The success rate rises with increase of the parameter value. Meanwhile, the power power of PICH is enhanced. The corresponding relation is as follows: PI No. Per Frame PICH Bit Repeat No. PICH Transmission Power Relative to CPICH 18 16 -7 36 8 -7 72 4 -5 144 2 -2

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