Huawei wcdma ran10.0 overview

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential

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www.huawei.com

WCDMA RAN10.0WCDMA RAN10.0 OverviewOverview


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Contents

• RAN10 Highlights & Operator Values• RAN10 Executive Summary• RAN10 New Features• RAN10 New Hardware





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Highlights of RAN10

New Generation Node B HSDPA Phase 4

- F-DPCH- HS-DPCCH preamble mode- Peak rate: 14.4Mbps/user

HSUPA Phase 2- 2ms TTI- Peak Rate: 5.76 Mbps/user

MBMS Enhanced Broadcast Network Optimization, e.g.

- CCPIC- RoHC- One Tunnel

Transmission Efficiency Improving , e.g.- FP MUX- Traffic Priority Mapping- Dynamic Bandwidth Control of Iub IP





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Operator Values of RAN10 More Broadband applications

- Downlink peak rate up to 14.4Mbps/user- Uplink peak rate up to 5.76 Mbps/user

More choices for operators to deploy higher speed data services.

Multimedia broadcast services become feasible

- More efficient, Enhancement Broadcast - More capacity, up to 16 channels per cell

Commercial application of MBMS becomes feasible and more flexible, more revenue can be got from multimedia broadcast services.

Network capability Improving for TCO saving

- CCPIC brings 11%~18% uplink capacity improvement- One Tunnel improves PS traffic efficiency- Traffic Priority Mapping enables differentiated services- IP transmission efficiency improvement (RoHC, FP MUX…)

More capacity and efficiency improvement bring more services and TCO saving for operators.





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Contents






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UMTS RAN10 Roadmap & Features

GA: 2008Q2

Based on 3GPP R6 Total 57 new and enhanced features 13 basic and 44 optional features 30 new and 27 enhanced features





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Basic Features in RAN10.0

Basic Features(77,N2,E11)

System Improvement(4,N1)

Standards Compliance(3,E2)

RABs and Services(7)

RAN Architecture & Functions(34,N1,E4)Transmission(8,E1)

System Reliability(2)

RAN Operation & Maintenance(16,E4)Node B Antenna System Solution(3)

Total 77 basic features, 2 new and 11 enhanced in RAN10.0





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Optional Features in RAN10.0

Optional Features(96,N28,E16)

RABs and Services(10,N2)

HSDPA(12,N3,E2)

HSUPA(8,N6,E1)

MBMS(9,N4,E3)

RAN Architecture & Functions(38,N8,E6)

Transmission(19,N5,E6)

Total 96 optional features, 28 new and 16 enhanced in RAN10.0





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Basic Features – new or enhanced in RAN10.0

System improvement and standards complianceSystem Improvement for RAN10.0 (New)3GPP R6 Specifications Operating Multi-bandRABs and Services…no basic features…RAN Architecture & FunctionsSystem Information BroadcastingPhysical Channel ManagementLoad ReshufflingDynamic Channel Configuration Control (DCCC)RNC Resource Sharing (New)

TransmissionATM Transmission Introduction Package

System Reliability…no basic features…

RAN Operation & MaintenancePerformance ManagementConfiguration ManagementSecurity ManagementRNC Software Management

Node B Antenna System Solution…no basic features…





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Optional Features – new or enhanced in RAN10.0

RABs and ServicesVoIP over HSPA (trial) (new)IMS Signaling over HSPA (new)

HSUPAHSUPA Introduction PackageHSUPA Phase 2 (new)60 HSUPA Users per Cell (new)HSUPA over Iur (new)SRB over HSUPA (new)HSUPA Iub Flow Control (new)Dynamic CE Resource Management (new)

MBMSMBMS Introduction PackageMBMS Phase 2 (new)MBMS 8 Channels per Cell256Kbps Channel Rate on MBMSMBMS 16 Channels per Cell (new)MBMS over Iur (new)Dynamic Power Estimation for MTCH (new)

HSDPAHSDPA Introduction PackageHSDPA Enhanced PackageHSDPA 13.976Mbps per User (new)HSDPA over Iur (new)SRB over HSDPA (new)





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Optional Features – new or enhanced in RAN10.0 (Cont.)

RAN Architecture & FunctionsCCPIC (new)Cell BarringIu Flex Load Distribution ManagementPDCP Header Compression (RoHC) (new)Active Queue Management (new)Inter Freq. Handover Based on CoverageInter Freq. Handover Based on DL QoS (new)Inter-RAT Handover Based on Coverage3G/2G Common Load Management (new)Queuing and Pre-EmptionRate Negotiation at Admission ControlInter-RAT Handover Based on DL QoS (new)Multi Freq. Band Networking Manage (new)One Tunnel (new)

TransmissionIP routing Based Hub Node B (new)Overbooking on ATM TransmissionIP Transmission Introduction on Iub InterfaceOverbooking on IP TransmissionATM/IP Dual Stack Node B IP Transmission Introduction on Iu InterfaceIP Transmission Introduction on Iur InterfaceFP MUX for IP Transmission (new)IP Re-route Based on BFD/ARP (new)Dynamic Bandwidth Control of Iub IP (new)Traffic Priority Mapping on Transport (new)





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Contents






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RAN 10.0 New Features

• HSDPA• HSUPA• MBMS• RAN Architecture & Functions• Transmission





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HSDPA Phase 4

New featuresHSDPA 13.976Mbps per User HSDPA over IurSRB over HSDPAIMS Signaling over HSPAF-DPCH (Basic)

BenefitsBetter service perception SRB over HSDPA saves code and transmission resources





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HSDPA 13.976Mbps per User

HS-DSCH Category

Maximum Number of HS-DSCH Codes

Received

Minimum Inter-TTI Interval

Maximum Number of

Bits

Maximum Bit Rate

Category 1 5 3 7298 3.649Category 2 5 3 7298 3.649Category 3 5 2 7298 3.649Category 4 5 2 7298 3.649Category 5 5 1 7298 3.649Category 6 5 1 7298 3.649Category 7 10 1 14411 7.2055Category 8 10 1 14411 7.2055Category 9 15 1 20251 10.1255

Category 10 15 1 27952 13.976

Category 11 5 2 3630 1.815Category 12 5 1 3630 1.815

User experience is greatly enhanced with 13.976Mbps per user!





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HSDPA over Iur

HSDPA over Iur enables HSDPA service not to be downgraded to R99 in the soft/hard handover between RNC scenario.

Cell2(f1,HSDPA)Cell1(f1,HSDPA)

RNC1 RNC2


RNC1 RNC2


RNC1 RNC2

RAN6.1

RAN10.0

R99 ServiceHSDPA Service

Best cell(HSDPA serving cell)

Best cell(HSDPA serving cell)





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Introduction of F-DPCH

(Tx OFF)

Slot #0 Slot #1 Slot #i Slot #14

Tslot = 2560 chips

1 radio frame: Tf = 10 ms

TPC NTPC bits

(Tx OFF)

512 chips

Frame structure for F-DPCH

The F-DPCH carries control information generated at layer 1 (TPC commands). It is a special case of downlink DPCCH

Each user occupy one Symbol in one slot to bear TPC command, Pilot and TFCI is not needed

Up to 10 users can be multiplexed on one F-DPCH

TPC

TPC

TPC

TPC

TPC

TPC

TPC

TPC

TPC

TPC

TPC

TPC

TPC

UE1UE2UE3

UE4

UE5UE6

UE7UE8

UE9UE10

P-CCPCH f rameoff set 256chi p（）

012

3

45

67

89





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SRB over HSPA

• SRB over HSPA provides a higher signaling rate and reduces the call process delay. Moreover, compared with the scenario where the SRB is carried on the DCH, code resources and transmission resources are saved and cell load is reduced when the SRB is carried on HSDPA

Cell1(f1,HSDPA)

RNC1

Cell1(f1,HSDPA)

RNC1

F-DPCH

SRB 3.4Kbps: SF=256

SRB 3.4Kbps: SF=256

SRB 3.4Kbps: SF=256

FDPCH: SF=256 for 10 HSDPA users

RAN10.0





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IMS Signaling over HSPA

IMS signaling (SIP SDP) is an PS RAB to UTRAN, and only setup on DCH and use the fixed configuration before RAN10.0

SIP / SDP characteristics based on Huawei research- The traffic in the SIP/SDP setup phase is about 70Kbits and the setup time is generally less than 3s, therefore, mean bit rate is 23.3Kbps- Very low traffic exists on SIP / SDP after connection establishment

It is more suitable for HSPA to bear IMS Signaling





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HSUPA Phase 2

New featuresHSUPA Phase 2HSUPA E-AGCH Power Control

Enhanced Fast UL Scheduling in Node-B

HSUPA 2ms TTIHSUPA 2ms/10ms TTI Handover

HSUPA 5.74Mbps per UserSRB over HSUPA60 HSUPA Users per Cell HSUPA Iub Flow Control HSUPA over IurDynamic CE Resource Management

Benefits

HSUPA full performance makes it possible to introduce new services in future and enhances competitive edge for operators in market





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HSUPA 2ms TTI• With 2ms TTI on the Uu interface, HSUPA can implement

faster data scheduling, faster data transmission, and lower delay.

• Two Transmission Time Intervals (TTIs) defined in the 3GPP protocol for HSUPA. 10 ms TTI is mandatory for all HSUPA capable UEs 2 ms TTI is optional

• In RAN10.0, 2 ms TTI is supported. • All UEs of the six categories can be supported.





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HSUPA 5.74Mbps per User

• 2 ms TTI and enhanced fast UL schedule, • 2 SF4 + 2 SF2 codes combination,• Reach the peak rate of 5.74 Mbit/s (MAC layer)/5.76 Mbit/s (physical

layer).

E-DCH Category

Max. Capability Combination E-DCH TTI

Max. Data Rate (Mbit/s)

MAC Layer 10 ms TTI

MAC Layer2 ms TTI Air Interface

Category 1 1 x SF4 10 ms only 0.71 – 0.96

Category 2 2 x SF4 10 ms and 2 ms 1.44 1.40 1.92


Category 4 2 x SF2 10 ms and 2 ms 2.0 2.89 3.84


Category 6 2 x SF4 + 2 xS F2

10 ms and 2 ms 2.0 5.74 5.76





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HSUPA E-AGCH Power Control

Saving DL 6% of total power resource Improving R99 and HSDPA capacity

AGCH:0.5%HICH:1.15%RGCH:0.4%

R99+HSDPA+Common:88%

Less than 2% DL power

AGCH:1%HICH:4.6%RGCH:3.1%

R99+HSDPA+Common:82%

Non-Power control

With Power control

Up to 8% DL power

Downlink power distribution (20 HSUPA users):Power Control Algorithm:– RGCH (dedicated channel)

Based on DPCH– HICH (dedicated channel) :

Based on DPCH– AGCH (common channel):

Based on DPCH Based on CQI Based on HS-SCCH

1. 00

0. 82

0. 51

0. 00

0. 20

0. 40

0. 60

0. 80

1. 00

AG归

一化

发射

功率

Fi xed Based DCH Based CQI

AGCH

Pow

er c

onsu

mpt

ion

DPCH Based Dynamic Power Control PowOffset for AGCH will be Updated according to CQI or Power of HS-SCCH

RAN10





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HSUPA Iub Flow Control• Benefits：

Improve the transport resource utilization greatly Reduce the throughput fluctuation in the case of the Iub congestion.

• The HSUPA flow control algorithm detects the status of the Iub buffer periodically and handles Iub buffer congestion to minimize Iub packet loss rate and delay in the Iub buffer.

The Iub flow control module measures and stores the value of the Iub buffer occupancy rate periodically and compares it with the previous one





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Dynamic CE Resource Management In normal algorithm, CEs are allocated and unchanged during service running in dedicated mode

But the CE resource was wasted when throughput decreasing because it is always changing Huawei algorithm reclaim and adjust CE resource according to user bitrates per 2ms TTI

e.g. All user sharing maximum peak rate 1.45Mpbs:

#HSUPA users Huawei

Vendor A

Vendor B

Start 0 0 8 (fixed)

1 user 20 CE 32 CE 32 CE

24 user 43 CE 80 CE

24 Users active, one user at 1.45 Mbps, Huawei 43 CEs compared other vendor 80 CEs

43CEs 80CEs





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Performance of CE efficiency improvement

• The CE occupancy period when sending a packet of 1MBytes HSUPA DCCC (RAN6.0): 16.92s NodeB Dynamic CE management (RAN10.0): 9.68s

HSUPA DCCC

NodeB Dynamic CE

Data Rate

Time

16.92s

9.68s

Quicker response





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E-DCH 2ms/10ms TTI Handover

1. Configurable 10ms/2ms bit rate threshold to decide whether use 2ms on E-DCH2. 2ms/10ms reconfiguration applied in the soft or hard handover scenarios3. Periodically retry to 2ms mechanism is provided to make UE get benefits of 2ms on E-DCH as much as possible

Configurable DCH/E-DCH Bit rate threshold

Configurable 10ms/2ms Bit rat threshold

Assigned Max. Bit Rate Related Factors

Traffic Class

Assigned MBR

Cell Capability

UE Capability

Cell1(2ms)

RNC

Cell2(10ms)

Cell1(2ms)

RNC

Cell2(10ms)

2ms

10ms

2ms reconf. to 10ms

Cell1(2ms)

RNC

Cell3(2ms)

2ms

Periodically retry to go back to 2ms





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HSUPA over Iur

HSUPA over Iur enables HSUPA service not need to be switched to R99 in the soft/hard handover between RNC scenario.

Cell2(f1,HSUPA)Cell1(f1,HSUPA)

RNC1 RNC2


RNC1 RNC2


RNC1 RNC2

RAN6.1

RAN10.0

R99 ServiceHSDPA Service





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MBMS Phase 2

New featuresMBMS Phase 2 MBMS Enhanced Broadcast Mode MBMS PTP over HSDPA MBMS Admission Enhancement MBMS 16 Channels per CellMBMS over IurDynamic Power Estimation for MTCH

Benefits

MBMS Enhanced Broadcast Mode improves service efficiency and decreases the accessing and switching timeMBMS capacity improves





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Introduction of Enhanced Broadcast Mode

RNC

BM-SC

RNC

CP

SGSNMulticast (PTP)

RNC

Multicast (PTM)

Broadcast (PTM)

Enhanced broadcast (PTM)Enhanced broadcast

(PTP)

•Standardization in 3GPP R6/7 in RAN33 meeting in Sept. 2006•Compared to broadcast mode, enhanced broadcast can realize the functions of counting and switch between PTP and PTM, more efficient

Deployed preferably by operator, supported in RAN10.0





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MBMS Capacity Improvement

MBMS (RAN10.0)• Capacity: •Up to 16 channels per cell• 16/32kbps MBMS services are supported• 7 x256kbps/ 8x128 kbps/ 16 x 64kbps channels per cell (total bandwidth less than 1792Kbps)• up to [BSC6800: 64][BSC6810: 256] sessions on an Iu interface, with total traffic volume not exceeding [BSC6800: 4096][BSC6810: 8192] Kbps

MBMS (RAN6.0)•Capacity:• Up to 64 session per RNC• Up to 8 channels per cell• 2 x 256kbps/ 4x128 kbps/ 8x 64kbps channels per cell (total bandwidth less than 512Kbps)• Up to 64 sessions on Iu interface, with total traffic volume not exceeding 4096Kbps





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MBMS PTP over HSDPA

• If PTP mode is adopted, RNC will establish the separate PTP RB for every UE on R99 DCH or HSDPA .

• The RAB combination is not affected with MBMS PTP service

MBMS over HSDPA is more efficient in PTP mode

channel x@HSDPA

MBMS over HSDPA (PtP) (<=n)

<label>

channel x@DCH

channel x@DCH

channel x@DCH

MBMS over DCH (PtP) (<=n )





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Dynamic Power Estimation for MTCH

Achieving combining Gains, Saving Transmitting Power

PTM

PTM

PTM PTM

PTP

PTM

PTM

PTM

PTP

PTM PTP

PTP

PTP

PTP

• MTCH power adjusted by the number of neighboring cells in PTM mode

• More neighboring cells in PTM modes Larger combining gains MTCH transmission power decreasing

• Fewer neighboring cells in PTM modes Smaller combining gains MTCH transmission power increasing





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RAN architecture & functions

New featuresCommon Channel Parallel Interference Cancellation (CCPIC)PDCP Header Compression (RoHC)Active Queue Management (AQM)Inter Frequency Hard Handover Based on DL QoS3G/2G Common Load ManagementInter-RAT Handover Based on DL QoS

One Tunnel

Benefits

Improve system uplink capacity and coverageImprove VoIP service transmission efficiencyReduce the PS service delay significantlyEnhance mobility managementImprove efficiency for PS traffic





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Coverage Improvement- CCPIC

• In the presence of urban macro cell, TU3 channel, AMR12.2k user with a 50% load, the CCPIC will bring 11% capacity improvement ； with a 75% load, the capacity improvement is 18%.

• More gain with load increasing, 1.5dB coverage gain can be improved for heavy load.

Cell Coverage and Capacity Comparison

0

1

2

3

4

5

6

7

8

9

10

0 10 20 30 40 50 60 70 80AMR 12.2K User Number

Upl

ink

Load

(dB

)

11% Capacity Gain

18% Capacity Gain

0.4dB Coverage Gain

1.5dB Coverage Gain

CCPIC Load Curve

Cell Coverage and Capacity Comparison

0

1

2

3

4

5

6

7

8

9

10

0 5 10 15 20 25CS64kbps User Number with activity factor=1 in TU3

Upl

ink

Load

(dB

)

5% Capacity Gain

8% Capacity Gain

0.2dB Coverage Gain

0.8dB Coverage Gain

CCPIC Load Curve





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RObust Header Compression (ROHC)All the following Profiles are supported in RAN10.0

I. ROHC UncompressedII. ROHC RTP: RTP/UDP/IP header

III. ROHC UDP: UDP/IP headerIV. ROHC ESP: ESP/IP header(Generally, I and II are used for VoIP)

The IPV4 and IPV6 header compression are all supported.

RTP Profile compressed rate can be more than 90% (92.5% in theory)UDP Profile compression rate can be more than 85% (89.3% in theory)

RNC

2

SGSN

311 2 3

Data before Compression

Data after Compression

Compression protocols defined in IETF

- RFC 1144 CTCP- RFC 2507 IPHC- RFC 2508 CRTP- RFC 3095 ROHC

Adopted by 3GPP}





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One Tunnel

Improves efficiency for PS traffic by simplifying SGSN process

RNC

SGSN GGSN

RNC

SGSN

GGSN

PS Domain (Before R7)

PS Domain (R7)

One-Tunnel (direct connection between RNC and GGSN) is introduced in Release 7.

With one tunnel approach the SGSN can create a direct tunnel between the RNC and the GGSN and thus remove itself from the chain.





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• HSDPA• HSUPA• MBMS• & Functions RAN Architecture • Transmission





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Transmission

New featuresIP routing Based Hub Node BFP MUX for IP TransmissionIP Re-route Based on BFD/ARPDynamic Bandwidth Control of Iub IPTraffic Priority Mapping on Transport

BenefitsReducing transmission cost by IP routing Based Hub Node B

Increasing IP transmission efficiency about 50% with FP MUX

Providing differentiated service by Traffic Priority Mapping on Transport





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IP routing Based Hub Node B

Reduce costs in transmission lines with the obtained convergence gain

RNC

NodeB

Hub NodeB

NodeB

NodeB

NodeB

NodeB

NodeB

The IP routing Based Hub Node B is a feature in IP transport mode. It is the extension of the tree topology, as shown in the following figure. The downstream NodeBs connect to the RNC after the convergence at the hub Node B.





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FP MUX for IP Transmission

Packet multiplexing is adopted to enhance the transport efficiency. Using FP MUX feature, multiple FP packets with same source IP, destination IP and DSCP (DiffServ Code Point) are packed into one UDP/IP packet, with compressed UDP information. Since less packet head, higher transport efficiency is achieved.

Save IUB IP transport resource to provide higher transport efficiency for IUB IP transport, The efficiency for voice packet can be improved from 50% to 80%!

UDPIPIPMACMAC

14 bytes14 bytes 8 bytes8 bytes20 bytes20 bytes

Packet headerPacket header

Payload1

Mux Mux PayloadPayload

Payload2Payload3

Payload4

FP MUX

Based on Huawei PRIVATE protocol





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IP Re-route Based on BFD/ARP

The interval of BFD detection is short (about 100ms), better than ARP (second level), therefore, BFD is preferred if both support BFD, ARP is alternative method when no BFD

BFD (Bidirectional Failure Detection) and ARP (Address Resolution Protocol) are 2 methods used for failure detection, IP re-route can be triggered in case offailure detection.

NodeB/CN/RNC

R1

R2

R3

R4

p1

p2

RNC

NodeB/CN/RNC

p1

p2

Networking with gateway Networking directly(Only Iu BFD supported in RAN10.0)

Improve the transport system reliability through failure detection and re-route.





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Dynamic Bandwidth Control of Iub IP

The principle of IP PM is similar to that of ATM OAM PM. One end send FM (Forward Monitoring) message periodically, the other end echo PM with BR (Backward Reporting) message as soon as it receives FM message.

Applied to the following networking scenarios

1. ADSL and ADSL 2+2. IP traffic convergence

Based on Huawei PRIVATE protocol





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Traffic Priority Mapping on Transport

Provides a solution of QoS differentiation on transport according the traffic class and user priority (ARP/THP).

R99_RT

R99_NRT

HSPA_RT

HSPA_NRT

AAL2 path

R99 Conversational

R99 Streaming

R99 Interactive

R99 Background

HSPA Conversational

HSPA Streaming

HSPA Interactive

HSPA Background

R99 C

TC TC+ARP

R99 S 1R99 S 2R99 S 3R99 I 1R99 I 2R99 I 3R99 B 1R99 B 2R99 B 3

HS CHS S 1HS S 2HS S 3HS I 1HS I 2HS I 3HS B 1HS B 2HS B 3

R99_RT

R99_NRT

HSPA_RT

HSPA_NRT

AAL2 path

R99 Conversational

R99 Streaming

R99 Interactive

R99 Background

HSPA Conversational

HSPA Streaming

HSPA Interactive

HSPA Background

R99 C

TC TC+ARP

R99 S 1R99 S 2R99 S 3R99 I 1R99 I 2R99 I 3R99 B 1R99 B 2R99 B 3

HS CHS S 1HS S 2HS S 3HS I 1HS I 2HS I 3HS B 1HS B 2HS B 3

R99_RT

R99_NRT

HSPA_NRT

AAL2 path

R99 InteractiveR99 I1L

TC TC+ARP+THP

R99 I2HR99 I2MR99 I2LR99 I 3HR99 I 3MR99 I 3L

HS I1 LHS I2 HHS I2MHS I2 LHS I3 HHS I3 MHS I3 L

HSPA_RT

HS I1 M

R99 I1HR99 I1M

HS I1 H

R99 I1

R99 I2

R99 I3

HSPA Interactive HS I1

HS I2

HS I3

R99_RT

R99_NRT

HSPA_NRT

AAL2 path

R99 InteractiveR99 I1L

TC TC+ARP+THP

R99 I2HR99 I2MR99 I2LR99 I 3HR99 I 3MR99 I 3L

HS I1 LHS I2 HHS I2MHS I2 LHS I3 HHS I3 MHS I3 L

HSPA_RT

HS I1 M

R99 I1HR99 I1M

HS I1 H

R99 I1

R99 I2

R99 I3

HSPA Interactive HS I1

HS I2

HS I3

THP is considered in RAN10.0





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Contents






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RNC Hardware Change – BSC6810

131211109876543210

GCUa

GCUa

DPUb

DPUb

DPUb

DPUb

SCUa

SCUa

SPUa

SPUa

SPUa

SPUa

CSUa

CSUa

OMUa

OMUa

TRM

2726252423222120191817161514

131211109876543210

GCUa

GCUa

DPUb

DPUb

DPUb

DPUb

SCUa

SCUa

SPUa

SPUa

SPUa

SPUa

CSUa

CSUa

OMUa

OMUa

TRM

2726252423222120191817161514

Feature •Performing centralized processing on MBMS user plane(PDCP/RLC) data•Configured on slot 0&1

CSUa

With software optimization, CSUa board is removed in RAN10.0.

Feature •Providing 4 STM-1/OC-3c optical ports•Providing ATM over SDH or IP over SDH

UOIaFeature •Providing 2 STM-1/OC-3 optical ports•Providing 126 E1s or 168 T1s•Providing IP over E1/T1 over SDH

POUa POS/C-POS port are supported in RAN10.0 with existing UOIa board and new POUa board introduced

Thank you

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Huawei wcdma ran10.0 overview

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