ZTE Corporation

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3GPP Specification Evolution

• ZTE Corporation

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Contents

• Standard organization
• TD-SCDMA Evolution
• 3GPP Long Term Evolution

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3G Standard organizations

• http// www.ccsa.org.cn
  http// www.3gpp.org

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Contents

• Standard organization
• TD-SCDMA Evolution
• 3GPP Long Term Evolution

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TD-SCDMA Evolution Path
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CCSA TD-SCDMA Standards present status

• Industry Standards issued by CCSA
• ??2GHz TD-SCDMA????????? ???????????? YD/T
  1365-2006
• ??2GHz TD-SCDMA????????? ???????????? YD/T
  1366-2006
• ??2GHz TD-SCDMA????????? ???????? YD/T
  1367-2006
• ??2GHz TD-SCDMA????????? ????????
  ????????????????YD/T 1368.1-2006
• ??2GHz TD-SCDMA????????? ????????
  ???????????YD/T 1368.2-2006
• ??2GHz TD-SCDMA????????? Iub?????? ??????
  YD/T 1369.1-2006
• ??2GHz TD-SCDMA????????? Iub?????? ??????
  YD/T 1369.2-2006
• ??2GHz TD-SCDMA????????? Iub??????
  ???????? YD/T 1369.3-2006
• ??2GHz TD-SCDMA????????? Iub??????
  ????NBAP?? YD/T 1369.4-2006
• ??2GHz TD-SCDMA????????? Iub??????
  ???????????????????????YD/T 1369.5-2006
• ???2GHz TD-SCDMA????????? Iub??????
  ???????????????????? YD/T 1369.6-2006
• ???2GHz TD-SCDMA????????? Iub??????
  ???????????????????????YD/T 1369.7-2006
• ???2GHz TD-SCDMA????????? Iub??????
  ???????????????????? YD/T 1369.8-2006
• ???2GHz TD-SCDMA????????? Iub?????? YD/T
  1370-2006
• ???2GHz TD-SCDMA????????? Uu?????????
  ?????? YD/T 1371.1-2006
• ???2GHz TD-SCDMA????????? Uu?????????
  ?????????????????????YD/T 1371.2-2006

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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

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TD-SCDMA Short Term Evolution MC-HSDPA

• N-frequency cellHSDPA ? 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(N2.8Mb/s)
• More suitable for packet services

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TD-SCDMA Short Term Evolution MC-HSDPA
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TD-SCDMA Short Term Evolution MC-HSDPA

• Multi-Carrier HSDPA Architecture

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TD-SCDMA Short Term Evolution MC-HSDPA

• 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.

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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.

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TD-SCDMA Short Term Evolution MBMS

• Traditional nonMBMS 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

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TD-SCDMA Short Term Evolution MBMS

• 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

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TD-SCDMA Short Term Evolution MBMS

• 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)

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TD-SCDMA Short Term Evolution MBMS

• 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

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TD-SCDMA Short-term Evolution HSUPA
FTP upload,Multimedia, Video-
clips,email, telematics Gaming,video streaming
Service requirement
System requirement
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TD-SCDMA Short-term Evolution HSUPA
TD-SCDMA HSUPA key technology-Efficient Scheduling
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TD-SCDMA Short-term Evolution HSUPA
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

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

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TD-SCDMA Short-term Evolution HSUPA
TD-SCDMA HSUPA key technology-Higher order
modulation
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TD-SCDMA Short-term Evolution HSUPA

• TD-SCDMA HSUPAs 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

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Contents

• Standard organization
• TD-SCDMA Evolution
• 3GPP Long Term Evolution

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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

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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

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3GPP Long-term Evolution Network
Architecture

Horizontal Network
SCP
App Server
Enterprise
ASP
Service management layer
Softswitch
Softswitch
Control layer
Switch layer
IP
Access layer
LTE
UMTS
WLAN
GERAN
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3GPP Long-term Evolution Fundamental
technology

• OFDM(Orthogonal Frequency Division
  Multiplexing )
• ???????????,?????????
• ?????????,?????????????,
• ??????????
• MIMO(Multiple Input Multiple Output)
• ????????????,???????
• ??????????,?????????????
• MC(Multi-Carrier)
• ????????,???????????

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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)
• WG1Physical 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

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3GPP Long-term Evolution Development
Status
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3GPP Long-term Evolution ZTEs
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

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3GPP Long-term Evolution ZTEs
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

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Thank you!