handover in zte in libya

1. ZTE Corporation
3GPP Specification Evolution

2. 1
 Standard organization
 TD-SCDMA Evolution
 3GPP Long Term Evolution
Contents

3. 2
3G Standard organizations
http:// www.ccsa.org.cn http:// www.3gpp.org
General Assembly
Council
Network and Switching
Technical Committee (TC3)
Transport and Access Network
Technical Committee (TC6)
IP and Multimedia
Technical Committee (TC1)
Network Management
Technical Committee (TC7)
Communication Power Supply
Technical Committee (TC4)
Network and Information Security
Technical Committee (TC8)
Sub Committee
Secretariat
General Office
Technology Department
Planning and Development
Department
Standardization-
Promoting Department
External Committee
Department
Advisory Committee
Wireless Communication
Technical Committee (TC5)
Mobile Internet Protocol Special
Group (TC2)

4. 3
 Standard organization
 TD-SCDMA Evolution
 3GPP Long Term Evolution
Contents

5. 4
TD-SCDMA Evolution Path
 3GPP
LCR TDD
（R4）
LCR TDD
（R5）
LCR TDD
(R6)
 CCSA
Multi-carrier
TD-SCDMA
Stage I
（R4 2003/03）
N Frequency
Bands Cell
TD-SCDMA
Stage II
（R5） TD-SOFDMA
MC-CDMA
TDD
TD-SCDMA
Stage III
（R6/R7）
Current status Short Term Evolution Long Term Evolution
OFDMA
TDD
SC-FDMA
/OFDMA TDD
LTE TDD
LCR TDD
(R7)
2005 2007

6. 5
Industry Standards issued by CCSA
 一、《2GHz TD-SCDMA数字蜂窝移动通信网 无线接入网络设备技术要求》 YD/T 1365-2006
 二、《2GHz TD-SCDMA数字蜂窝移动通信网 无线接入网络设备测试方法》 YD/T 1366-2006
 三、《2GHz TD-SCDMA数字蜂窝移动通信网 终端设备技术要求》 YD/T 1367-2006
 四、《2GHz TD-SCDMA数字蜂窝移动通信网 终端设备测试方法 第一部分：基本功能、业务和性能测试》YD/T 1368.1-2006
 五、《2GHz TD-SCDMA数字蜂窝移动通信网 终端设备测试方法 第二部分：网络兼容性测试》YD/T 1368.2-2006
 六、《2GHz TD-SCDMA数字蜂窝移动通信网 Iub接口技术要求 第一部分：总则》 YD/T 1369.1-2006
 七、《2GHz TD-SCDMA数字蜂窝移动通信网 Iub接口技术要求 第二部分：层一》 YD/T 1369.2-2006
 八、《2GHz TD-SCDMA数字蜂窝移动通信网 Iub接口技术要求 第三部分：信令传输》 YD/T 1369.3-2006
 九、《2GHz TD-SCDMA数字蜂窝移动通信网 Iub接口技术要求 第四部分：NBAP信令》 YD/T 1369.4-2006
 十、《2GHz TD-SCDMA数字蜂窝移动通信网 Iub接口技术要求 第五部分：公共传输信道数据流的数据传输和传输信令》YD/T 1369.5-2006
 十一、《2GHz TD-SCDMA数字蜂窝移动通信网 Iub接口技术要求 第六部分：公共传输信道数据流的用户平面协议》 YD/T 1369.6-2006
 十二、《2GHz TD-SCDMA数字蜂窝移动通信网 Iub接口技术要求 第七部分：专用传输信道数据流的数据传输和传输信令》YD/T 1369.7-2006
 十三、《2GHz TD-SCDMA数字蜂窝移动通信网 Iub接口技术要求 第八部分：专用传输信道数据流的用户平面协议》 YD/T 1369.8-2006
 十四、《2GHz TD-SCDMA数字蜂窝移动通信网 Iub接口测试方法》 YD/T 1370-2006
 十五、《2GHz TD-SCDMA数字蜂窝移动通信网 Uu接口物理层技术要求 第一部分：总则》 YD/T 1371.1-2006
 十六、《2GHz TD-SCDMA数字蜂窝移动通信网 Uu接口物理层技术要求 第二部分：物理信道和传输信道到物理信道的映射》YD/T 1371.2-2006
 十七、《2GHz TD-SCDMA数字蜂窝移动通信网 Uu接口物理层技术要求 第三部分：复用和信道编码》 YD/T 1371.3-2006
 十八、《2GHz TD-SCDMA数字蜂窝移动通信网 Uu接口物理层技术要求 第四部分：扩频和调制》 YD/T 1371.4-2006
 十九、《2GHz TD-SCDMA数字蜂窝移动通信网 Uu接口物理层技术要求 第五部分：物理层过程》 YD/T 1371.5-2006
 二十、《2GHz TD-SCDMA数字蜂窝移动通信网 Uu接口物理层技术要求 第六部分：物理层测量》 YD/T 1371.6-2006
 二十一、《2GHz TD-SCDMA数字蜂窝移动通信网 Uu接口层2技术要求 第一部分：MAC协议》 YD/T 1372.1-2006
 二十二、《2GHz TD-SCDMA数字蜂窝移动通信网 Uu接口层2技术要求 第二部分：RLC协议》 YD/T 1372.2-2006
 二十三、《2GHz TD-SCDMA数字蜂窝移动通信网 Uu接口RRC层技术要求》 YD/T 1373-2006
CCSA TD-SCDMA Standard’s present status

7. 6
TD-SCDMA Short-term Evolution
—— N-Frequency Cell Solution
 Overcome the following problems in multiple-cell
solution for improving capacity in TD-SCDMA:
– The difficulties in cell search
– The complexity in UE measurements
– The problem in handover
– System inefficiency
 Implementation of N-frequency cell
– Multiple frequency bands are configured in one cell
– A master frequency band is configured
– DwPTS and P-CCPCH are only configured for master band

8. 7
N-frequency cell＋HSDPA  Multi-carrier HSDPA
 HSDPA
 N-frequency cell
– Multiple frequency bands are configured for one logical cell
– Facilitate to multiple frequency bands combining for HSDPA
 Multi-carrier HSDPA is a combination of N-frequency
cell and HSDPA
– Higher peak data rate（N*2.8Mb/s）
– More suitable for packet services
TD-SCDMA Short Term Evolution
—— MC-HSDPA

9. 8
TD-SCDMA Short Term Evolution
—— MC-HSDPA

10. 9
HARQ Process(1~8)
.
.
.
Carrier #1
Physical
Layer
HARQ Process(1~8)
.
.
.
HARQ Process(1~8)
.
.
.
Carrier #2
Physical
Layer
Carrier #3
Physical
Layer
Channel Coding Channel Coding Channel Coding
3GPP
HSDPA
channel
coding
3GPP
HSDPA
channel
coding
3GPP
HSDPA
channel
coding
Carrier #1 Carrier #2 Carrier #3
HS-DSCH
HS-SCCH HS-SICH
Priority Queue Distribution Priority Queue Distribution
Priority
Queue
Priority
Queue
Priority
Queue
Priority
Queue
Scheduling/Priority Handling
MAC-hs
HARQ Entity
MAC-d flows
HS-DSCH
HS-SCCH HS-SICH HS-DSCH
HS-SCCH HS-SICH
Multi-Carrier HSDPA Architecture
TD-SCDMA Short Term Evolution
—— MC-HSDPA

11. 10
Principles on multi-carrier HSDPA Standardization
 Air interface shall keep compatible with N-frequency
cell solution in CCSA TD-SCDMA stage I;
– Physical layer: channel structure of HS-SCCH and HS-SICH is
same to that for single-carrier HSDPA system ；
– MAC layer: segmentation/combining.
– UE Capability: adding UE multi-carrier HSDPA capability
indicator in corresponding field.
 The multi-carrier HSDPA is based on 3GPP R5
HSDPA, but the changes are limited to the minimum.
TD-SCDMA Short Term Evolution
—— MC-HSDPA

12. 11
TD-SCDMA Short Term Evolution
—— MBMS
TDD MBMS Technology
 MBMS( Multimedia Broadcast and Multicast Services) is an
unidirectional point to multipoint bearer service in which data
is transmitted from a single source entity to multiple recipients.
 MBMS is basically a new broadcast and multicast radio bearer
technology; it can provide high speed downlink, non-voice
services for multiple users simultaneously and regardless of
user location and radio conditions in full area coverage.

13. 12
Traditional non–MBMS results in
radio resource bottlenecks by
point-to-point transmission
method
MBMS removes radio resource
bottlenecks by point-to-multipoint
transmission method
MBMS can efficiently utilize radio
resource at air interface
MBMS can perform lower prices
due to the saving in network
resources
TD-SCDMA Short Term Evolution
—— MBMS

14. 13
TDD MBMS architecture
 MBMS architecture comprises four blocks: User Equipment (UE), UTRAN
(UMTS Terrestrial Radio Access Network, Core Network (including GGSN and
SGSN) and new blocks- Broadcast Multicast - Service Centre (BM-SC)
 MBMS architecture enables the efficient usage of radio-network and
core-network resources, with an emphasis on radio interface efficiency
TD-SCDMA Short Term Evolution
—— MBMS

15. 14
TDD MBMS channels
– MICH (MBMS notification Indicator Channel)
– MCCH (MBMS point-to-multipoint Control Channel
– MTCH (MBMS point-to-multipoint Traffic Channel)
– MSCH (MBMS point-to-multipoint Scheduling Channel)
TD-SCDMA Short Term Evolution
—— MBMS

16. 15
MBMS Feature over TDD Technology
-Simulcast Combining with timeslot reused
 TD-SCDMA can use selective combing and soft coming, and it can
also use simulcast combining through timeslot reused technology on
its special frame structure
 The complexity of UE will be increased due to combining of multiple
radio links simultaneously in UE. But, in TD-SCDMA, it can be avoided
by combining macro-diversity with timeslot reused
 Timeslot reused can increase further throughput gains on the basis of
selective combining and soft combining
TD-SCDMA Short Term Evolution
—— MBMS

17. 16
Service requirement
HSUPA TDD
Faster
retransmission
Efficient
scheduling
Higher
Modulation
Higher Date rate in uplink
Higher network efficiency
Higher spectra efficiency
Lower latency
FTP upload,Multimedia,
Video- clips,email, telematics
Gaming,video streaming
TD-SCDMA Short-term Evolution
—— HSUPA
System requirement

18. 17
TD-SCDMA HSUPA key technology－Efficient Scheduling
TD-SCDMA Short-term Evolution
—— HSUPA

19. 18
TD-SCDMA HSUPA key technology－Efficient Scheduling
 With Node B-based Packet Scheduling, two main
improves:
– Cell throughput is increased by means of faster adaption to
interference variation and finer control of the total received uplink
power.
– User performance is improved by means of more frequently
reallocation of radio resource to NRT users
TD-SCDMA Short-term Evolution
—— HSUPA

20. 19
TD-SCDMA HSUPA key technology－Faster retransmission
80ms
TD-SCDMA Short-term Evolution
—— HSUPA

21. 20
TD-SCDMA HSUPA key technology－Faster retransmission
 Faster retransmission
– Reaches maximum achievable cell throughput by means of
faster retransmission of erroneously received data frame to
reduce the number of RLC retransmission, since physical
channel can be operated with higher BLER for same overall
performance under this condition, which results to an increase in
spectra efficiency.
TD-SCDMA Short-term Evolution
—— HSUPA

22. 21
TD-SCDMA HSUPA key technology－Higher order modulation
• Higher order modulation improve spectrum efficiency in good
propagation condition.
Qk
Ik
Qk
Ik
QPSK
8PSK
16QAM
TD-SCDMA Short-term Evolution
—— HSUPA

23. 22
TD-SCDMA HSUPA’s latest progress
 In March, 2006, at the TSG RAN meeting #31, a new work
item proposal (“Proposed Work Item on 1.28 Mcps TDD
Enhanced Uplink “) was approved. ZTE takes part in this WI
with other companies.
 The WI includes the following sub WIs:
 1.28 Mcps TDD Enhanced Uplink: Physical Layer
 1.28 Mcps TDD Enhanced Uplink: Layer 2 and 3 Protocol
Aspects
 1.28 Mcps TDD Enhanced Uplink: UTRAN Iub/Iur Protocol
Aspects
 1.28 Mcps TDD Enhanced Uplink: RF Radio Transmission/
Reception, System Performance Requirements and
Conformance Testing
TD-SCDMA Short-term Evolution
—— HSUPA

24. 23
 Standard organization
 TD-SCDMA Evolution
 3GPP Long Term Evolution
Contents

25. 24
3GPP Long-term Evolution
—— Target
 Significantly increased peak data rate e.g. 100 Mbps (downlink) and 50 Mbps
(uplink)
 Increase “cell edge bitrate” whilst maintaining same site locations as
deployed today
 Significantly improved spectrum efficiency ( e.g. 2-4 x Rel6)
 Possibility for a Radio-access network latency (user-plane UE – RNC (or
corresponding node above Node B) - UE) below 10 ms
 Significantly reduced C-plane latency (e.g. including the possibility to
exchange user-plane data starting from camped-state with a transition time
of less than 100 ms (excluding downlink paging delay))
 Scaleable bandwidth
 5, 10, 20 and possibly 15 MHz
 [1.25,] 2.5 MHz: to allow flexibility in narrow spectral allocations where
the system may be deployed
 Support for inter-working with existing 3G systems and non-3GPP specified
systems

26. 25
3GPP Long-term Evolution
—— Target
 Further enhanced MBMS
 Reduced CAPEX and OPEX including backhaul
 Cost effective migration from Rel-6 UTRA radio interface and
architecture
 Reasonable system and terminal complexity, cost, and power
consumption.
 Support of further enhanced IMS and core network
 Backwards compatibility is highly desirable, but the trade off versus
performance and/or capability enhancements should be carefully
considered.
 Efficient support of the various types of services, especially from the
PS domain (e.g. Voice over IP, Presence)
 System should be optimized for low mobile speed but also support
high mobile speed
 Operation in paired and unpaired spectrum should not be precluded
 Possibility for simplified co-existence between operators in adjacent
bands as well as cross-border co-existence

27. 26
Circuit
Packet
Wireless
Access
Mobile
Network
Services Network
Transport, Switch and Access
SCP
Service
management
layer
App Server
Control layer
Switch layer
Access layer
Softswitch Softswitch
GERAN
UMTS WLAN
LTE
IP
Enterprise
ASP
Horizontal
Network
3GPP Long-term Evolution
—— Network Architecture

28. 27
3GPP Long-term Evolution
—— Fundamental technology
 OFDM（Orthogonal Frequency Division Multiplexing ）
信道分成若干正交子信道，高速数据信号转换成
并行的低速子数据流，调制到每个子信道上进行传输，
从而降低符号间干扰。
 MIMO（Multiple Input Multiple Output）
利用多天线来抑制信道衰落，在不增加带宽和
天线发送功率的情况下，提高信道容量及频谱利用率。
 MC（Multi-Carrier）
通过多载波的捆绑，来提高信道的传输速率。
TS2
TS0
TS0
TS0
TS1
TS4
TS4
TS4
TS5
TS5
TS5
TS6
TS6
TS6
Carrier 1
Carrier 2
Carrier 3
Group 1
Carrier 10
Carrier 11
Carrier 12
Group 4
.
.
.
.
.
.
.
.
.
DwPTS GP UpPTS UpLink
Slot
DownLink
Slot
TS3
TS3
TS3
TS2
TS0
TS0
TS0
TS1
TS4
TS4
TS4
TS5
TS5
TS5
TS6
TS6
TS6
TS3
TS3
TS3

29. 28
3GPP Long-term Evolution
—— Development Status
 The requirement of LTE (TR25.913) is approved at 3GPP TSG RAN #28
meeting in 2005.6
 Now 3GPP TSG RAN is working on the TR25.912 (Feasibility Study for
EUTRA and EUTRAN)
– WG1：Physical layer aspects (TR25.814)
– WG2： Radio interface protocol aspects (TR25.813)
– WG3： Radio access architecture and interfaces (TR R3.018)
– WG4： Radio performance and protocol aspects

30. 29
3GPP Long-term Evolution
—— Development Status
TR25.913 V7.2.0
Requirements for EUTRA and UTRAN
TR25.912 V0.0.4 [RP-060168]
Feasibility Study for EUTRA and EUTRAN
WG1 WG2
TR25.814 V1.2.0
Physical layer aspects for EUTRA
(RP-060201)
Editor: NTT DoCoMo
TR25.813 V0.5.1
EUTRA and EUTRAN
Radio interface protocol
aspects
(RP-060176)
Editor: Nokia, LG, NEC,
Motorola, Samsung
WG3
TR R3.018 V0.2.0
EUTRA and EUTRAN Radio Access
Architecture and Interfaces
Editor:
Vodafone, Ericsson
WG4
SI TR: NTT DoCoMo
Base Station: Ericsson
Terminal: Motorola
RRM: Nokia
RF System Scenarios:
Siemens
WG specific TRs
Outcome

31. 30
3GPP Long-term Evolution
—— ZTE’s participation
 ZTE begins to attend 3GPP LTE standard work from 2005.5
 ZTE is covering WG1/WG2/WG3 now
 ZTE had already submitted many contributions to 3GPP RAN
WG1/WG2/WG3
 ZTE is devoted to LTE key technology study

32. 31
3GPP Long-term Evolution
—— ZTE’s contribution
 Frame structure and parameter adjustment
– The proposal of CP length (R1-051358) is adopted in TR25.814
 Power de-grating
– The proposal of UL PAPR reduction (R1-051008) is adopted in TR25.814
 Cell search
 Intra-Node B Synchronization and UL timing control
 Pilot design
 Scheduling
 Channel Multiplexing
 Link adaptation
 Random access
 Channel coding
 MIMO
 Macro diversity

33. Thank you！