Umts user and_control_plane
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The document discusses the user and control planes in the UMTS protocol stack. The control plane carries all signaling information between the mobile device and network using control channels and contains the RRC layer. The user plane is responsible for transferring user data like voice and applications and contains the BMC and PDCP layers, while the MAC and RLC layers exist in both planes.
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- A complete system architecture with standardized interfaces to allow interoperability between vendors.
- A UTRAN subsystem comprising Node B base stations and RNC controllers to handle radio functionality using WCDMA.
- A core network subsystem including elements like MSC, SGSN, GGSN to support both circuit switched and packet switched services.
- WCDMA uses CDMA with variable spreading factors to provide different data rates. It employs channelization codes, scrambling codes and modulation like QPSK.
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2. Signaling Radio Bearers (SRBs) carry RRC and NAS messages using different logical channels.
3. System information is broadcast on common channels, informing UEs of network configurations and neighbor cells.
4. Handover between cells is supported through the X2 interface for intra-LTE handovers and inter-RAT handovers to other technologies like UMTS or GSM.
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This document summarizes the signaling flow between a UE, RNC, and MSC server during the establishment and release of a circuit switched call. It involves the following key steps:
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2. The MSC server and RNC then perform authentication and security procedures with the UE.
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25931 510 utran functions, examples on signalling procedures
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UMTS uses logical, transport, and physical channels to transmit data over the air interface. The Broadcast Control Channel (BCCH) broadcasts general system information to mobile devices in idle state. The Paging Control Channel (PCCH) informs users of incoming calls or messages. The Common Control Channel (CCCH) is used to establish new connections between mobile devices and the network. Transport channels like the Broadcast Channel (BCH) and Dedicated Channel (DCH) carry data from the logical channels. Physical channels such as the Primary Common Control Physical Channel (P-CCPCH) and Dedicated Physical Data Channel (DPDCH) provide the transmission medium and perform channel coding.
Umts 18 19
The document summarizes the key components and protocol architecture of a UMTS network. It describes the domains and reference points that divide a UMTS system. The radio access network (UTRAN) consists of Radio Network Subsystems (RNSs) with Node Bs and Radio Network Controllers (RNCs). The interfaces between these components, such as Iu, Iur, Iub and Uu, have user, control and transport planes with various protocols to support communication and control functions. Key responsibilities are distributed between the RNC for radio resource control and the Node B for lower-level radio access functions.
Aircraft digital computer system
The document discusses digital computer systems used in aircraft. It describes the basic components of a computer including the central processing unit (CPU), memory, and input/output devices. The CPU contains an arithmetic logic unit, control unit, and registers. Data storage includes read-only memory (ROM), random access memory (RAM), and battery-backed memory. Computers systems use bus systems to connect components via address, data, and control buses. Modern aircraft use multiple redundant bus systems and protocols like ARINC 429 for serial data transfer between avionic systems.
6044847.ppt
The document discusses 3G mobile communication technologies including UMTS. It describes the network architecture evolution from 3GPP Release '99 to Release 5. Key aspects covered include the core network, radio access network, bearer services, protocols, and handover mechanisms like soft handover.
14 wcdma
UMTS-WCDMA is a 3G mobile communication standard that uses CDMA technology. It uses wideband CDMA with a chip rate of 3.84 Mcps for its air interface along with orthogonal variable spreading factor codes. The standard defines protocols and procedures for cell search, handover, uplink and downlink physical channels, and support for multirate services through variable spreading factors. Long term targets for UMTS-WCDMA evolution include higher data rates up to 100 Mbps for full mobility and 1 Gbps for low mobility, as well as improved spectral efficiency.
GSM - The Network Layer
The document discusses the network layer in GSM systems. It describes the main sublayers and protocols in the network layer, including radio resource management (RR), mobility management (MM), and call control (CC). It explains the functions and procedures handled by each sublayer, such as channel assignment and handover (RR), location updating and authentication (MM), and call establishment and clearing (CC). It also outlines some of the key layer 3 protocols used, including RIL3-RR, RIL3-MM, RIL3-CC, and MAP, and provides examples of signaling flows for initial mobile acquisition and a mobile-originating call.
An_overview_of_the_3G_network.pdf
1. The 3G network consists of the User Equipment (UE) or mobile phone and the UMTS Terrestrial Radio Access Network (UTRAN) which includes base stations and network intelligence.
2. The UE and UTRAN contain four main layers - physical, MAC, RLC, and RRC layers. The RRC layer handles functions like broadcasting information, establishing connections, and controlling quality of service.
3. Below the RRC layer is the RLC layer, which is focused on data transfer functions like segmentation and reassembly. The MAC layer handles logical channels and prioritization, while the physical layer handles radio functions.
02 tm51172 en02gla2_air interface protocols_ppt
The document describes the air interface protocols in LTE including the protocol stack and functions of each layer. The key points are:
- The protocol stack has physical, MAC, RLC, and PDCP layers, along with RRC for control and NAS for non-radio functions.
- The physical layer uses OFDMA for downlink and SC-FDMA for uplink, and provides basic transmission over the air interface.
- MAC handles transport channels, priority, and HARQ. RLC provides segmentation, reassembly, and error correction.
- PDCP performs header compression and ciphering. RRC handles mobility, security, QoS, and NAS message transfer.
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gsm and tdma technology
This document provides an overview of GSM and TDMA technology. It discusses the history and development of GSM standards, the services offered, radio frequency carriers used, and the network architecture including components like the mobile station, base station system, network switching system, and operation support system. It also describes the various interfaces and protocols used in GSM networks like Um, Abis, A, Gb, and protocols like BSSAP, MAP, and ISUP. Finally, it discusses the TDMA channel concept in GSM and the different logical channels used.
DATA COM PRESENTATION-1.pptx
The document discusses 3G network architecture, security, and handover between GSM and UMTS networks. It describes the key components of 3G network architecture including the user equipment and UTRAN consisting of layers like physical, MAC, RLC, and RRC layers. It explains the functions of the RRC layer including establishment of connections and allocation of resources. It also summarizes the functions of lower layers like RLC and MAC. Furthermore, it outlines the core network components including MSC, SGSN, GGSN and shared elements like HLR, EIR, and AuC. Finally, it briefly discusses the security mechanisms in 3G networks including network access, domain, and application layer security.
CENTUM CS 3000 R3.pptx
The document discusses control systems and their components. It provides information on distributed control systems (DCS), explaining that they are decentralized control systems with controller elements distributed throughout the system. It then describes the CENTUM CS 3000 system, including that it is Yokogawa's first DCS and its components like the Human Interface Station and Field Control Station. It also discusses communication components of DCS systems like Vnet/IP networks.
X tel gsm-wcdma-datasheet
The document describes X-TEL's Xi system for collecting and processing data from GSM and WCDMA networks. The Xi system includes a GSM/WCDMA test mobile and integrated WCDMA scanner that can collect data from up to 23 devices simultaneously. It also provides post-processing capabilities like displaying metrics in tables, graphs and maps.
Overview and Basics of LTE
The document provides an overview of LTE (Long Term Evolution) Release 8. It discusses key requirements for LTE such as supporting high data rates, low latency, and an all-IP network. It describes the network architecture including components like eNodeB, MME, S-GW, and P-GW. It also covers functionality of these components and the protocol stack consisting of PDCP, RLC, MAC, and RRC layers. Mobility management, QoS, and comparisons to other technologies like HSPA+ and WiMAX are also summarized.
Similar to Umts user and_control_plane (20)
Umts user and_control_plane
- 1. User & Control Plane UMTS Protocol Stack is categorized into two vertical planes; the control (Signalling) and user (Data) planes. The MAC and RLC layers exist in both the Control and User planes. The RRC is present in the Control plane. However BMC and PDCP are present only in the U-plane Control Plane: The control plane is used to carry all signaling information between the mobile (UE) and the Network (NW). It is thus also referred to as a signaling plane. Control Channels are used for signaling information of the control planes User Plane: The User or data plane is responsible for the transfer of user data, such as voice or application data. User & Control Planes in UMTS Protocol Stack CC SMS SS GSMS SM MM GMM RRC User Plane Data Protocols (PPP, IP, etc) BMC Data Protocols PDCP Data Protocols RLC MAC PHY Control Plane Data Protocols User & Control Data Protocols Legend Data ProtocolsUser Plane Data Protocols Non Access Stratum Access Stratum