1、 ETSI TR 102 061 V1.1.1 (2004-05)Technical Report Satellite Earth Stations and Systems (SES);Satellite component of UMTS/IMT 2000;Detailed analysis of the packet mode for the SW-CDMA(Family A)floppy3 ETSI ETSI TR 102 061 V1.1.1 (2004-05) 2 Reference DTR/SES-00071 Keywords CDMA, packet mode, satellit
2、e, UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice Individual copies of the present docume
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6、production in all media. European Telecommunications Standards Institute 2004. All rights reserved. DECTTM, PLUGTESTSTM and UMTSTM are Trade Marks of ETSI registered for the benefit of its Members. TIPHONTMand the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its
7、Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI ETSI TR 102 061 V1.1.1 (2004-05) 3 Contents Intellectual Property Rights7 Foreword.7 1 Scope 8 2 References 10 3 Definitions and abbreviations.12 3.1 Definitions12 3.2 Abbr
8、eviations .13 4 Project descriptions 18 4.1 ESA/ATB .18 4.1.1 ATB packet access18 4.1.2 ATB investigation on multicast/narrowcast19 4.2 IST/SATIN studies/project description 19 4.2.1 Main constraints and requirements on SATIN access 20 4.2.2 SATIN key issues .21 4.2.3 Layer 2 and L2+ key issues 21 4
9、.2.4 Layer 1 key issues.22 4.2.5 Service provision principles for MBMS .23 4.3 ESA-3GNetSim23 4.3.1 Objective.23 4.3.2 Target system architecture 24 4.3.3 General concept of the simulator 24 4.4 GAUSS project.27 4.4.1 GAUSS Services.28 5 Conclusion and recommendation of the projects .29 5.1 ATB conc
10、lusions on unicast.29 5.2 ATB conclusions on multicast/narrowcast .30 5.3 SATIN project conclusions 32 5.4 3GNetSim.34 5.5 Conclusions from the GAUSS project35 6 Conclusion and further work35 Annex A: SW-CDMA packet access.36 A.1 Forward link .36 A.1.1 Potential diversity advantages 37 A.1.2 Power c
11、ontrol issue 38 A.1.3 Adaptation of 3GPP DSCH to SW-CDMA39 A.1.3.1 Trade-offs .39 A.1.3.2 DSCH Access proposals .40 A.1.3.3 System simulations .41 A.2 Reverse link49 A.2.1 Spread aloha access50 A.2.1.1 Analysis 50 A.2.1.2 Simulations .53 A.2.2 CPCH adaptation to SW-CDMA60 A.2.3 Dynamic rate on deman
12、d62 A.2.3.1 Access description 62 A.2.4 Simulations.65 A.2.4.1 Simulations in a simplified system scenario .65 A.2.4.2 dROD Simulations in more realistic scenarios .68 A.2.5 Trade-off between alternative solutions .77 Annex B: Satellite diversity assessment in packet access simulations.78 ETSI ETSI
13、TR 102 061 V1.1.1 (2004-05) 4 B.1 Simulation results.83 Annex C: Web traffic model in packet access simulations.85 Annex D: Channel model.86 D.1 Channel characteristics.88 D.1.1 Lutz urban channel model 88 D.1.2 Lutz highway channel model90 Annex E: Investigation into multicasting and narrowcasting
14、for S-UMTS .92 E.1 Assessment and optimization of S-UMTS for multicasting in SATB92 E.1.1 Introduction 92 E.1.2 Objectives.92 E.1.3 System configuration92 E.1.4 System assumptions .93 E.1.5 Large block interleaving combined with Reed-Solomon FEC decoding .93 E.1.5.1 System parameters to be determine
15、d 93 E.1.5.2 Important RS encoder/decoder characteristics94 E.1.5.3 Large block interleaver dimensioning.94 E.1.5.4 Performance results (urban model).97 E.1.5.5 Performance results (highway model) 99 E.1.6 Medium block interleaver with CRC99 E.1.6.1 Channel model investigation.100 E.1.6.2 Channel ch
16、aracteristics and simulation results .101 E.1.7 Carrousel transmitter with large and medium interleaver 102 E.1.8 Combined hybrid implementation102 E.1.8.1 Simulation results .103 E.2 Narrowcast based on FEC and ARQ- a numerical study .104 E.2.1 Introduction 104 E.2.2 Simulator design and implementa
17、tion 105 E.2.3 Simulation scenarios.107 E.2.3.1 Pedestrian terminal in urban area107 E.2.3.2 Vehicular terminal in urban area.111 Annex F: IST/SATIN Access scheme definition115 F.1 Layer 2 specifications and L2+ main features115 F.1.1 RRM strategy and RRC interactions with lower layers115 F.1.1.1 In
18、troduction.115 F.1.1.2 Radio Bearer Allocation and Mapping (RBAM)116 F.1.1.3 Admission Control (AC).120 F.1.1.4 Load control126 F.1.1.5 Admission and Preventive Load Control129 F.1.1.6 Packet scheduler .130 F.1.1.7 RRC interactions with lower layers 138 F.1.2 BMC sublayer specifications139 F.1.2.1 M
19、odel of the SATIN BMC sublayer.139 F.1.2.2 Functions 140 F.1.2.3 Services provided to upper layers .140 F.1.2.4 Services expected from RLC 141 F.1.2.5 Elements for layer-to-layer communication .141 F.1.3 SATIN RLC sublayer specifications 144 F.1.4 SATIN MAC sublayer specification 145 F.1.4.1 MAC lay
20、er in the SATIN baseline scenario .145 F.1.4.2 MAC layer in the SATIN optional scenario .148 F.2 Layer 1 specifications.150 F.2.1 Transport channels .150 F.2.1.1 Forward Link/Downlink .150 F.2.1.2 Return Link/Uplink.153 F.2.2 Mapping of transport channels onto physical channels153 ETSI ETSI TR 102 0
21、61 V1.1.1 (2004-05) 5 F.2.3 Timing relationship 154 F.2.4 Higher order modulation schemes154 F.2.4.1 8-PSK154 F.2.4.2 16-QAM156 F.2.5 Advanced Coding schemes.156 F.2.5.1 Impact of the Broadcast/Multicast services 156 F.2.5.2 Combining layered coding with high spectral efficiency157 F.2.6 Physical la
22、yer procedures and operation 159 F.2.6.1 Cell-search procedure .159 F.2.6.2 Power control160 F.2.6.3 S-UMTS paging163 F.2.6.4 RACH procedure 163 F.2.7 UE physical layer measurement abilities166 F.2.7.1 SFN-CFN observed time difference .166 F.2.7.2 Observed time difference to GSM cell .166 F.2.7.3 P-
23、CCPCH RSCP.167 F.2.7.4 Timeslot ISCP.167 F.2.7.5 SIR167 F.2.7.6 GSM carrier RSSI.167 F.2.7.7 UE Rx-Tx time difference 168 F.2.7.8 SFN-SFN Observed time difference.168 F.2.7.9 Timing Advance (TADV) for 1,28 Mcps TDD168 F.2.7.10 Physical channel BER.168 F.2.7.11 RX timing deviation169 F.2.7.12 Timeslo
24、t ISCP.169 F.2.7.13 RSCP 169 F.2.7.14 Acknowledged PRACH preambles.169 F.2.7.15 Detected PCPCH access preambles 170 F.2.7.16 Acknowledged PCPCH access preambles 170 F.2.7.17 SIR170 F.2.7.18 PRACH/PCPCH Propagation Delay.170 F.2.7.19 UTRAN GPS Timing of Cell Frames for UE positioning 171 F.2.7.20 SIR
25、 ERROR171 F.2.8 UE transmission and reception.171 F.3 Inter-layer procedures.176 F.3.1 UMTS access network level of connectivity and RRC states.176 F.3.1.1 Requirements on states in SATIN baseline case.177 F.3.1.2 Requirements on states in SATIN optional case.178 F.3.2 Basic system procedures 179 F.
26、3.2.1 Paging .179 F.3.2.2 Camping on the cell 179 F.3.3 Radio resource set-up and release 180 F.3.3.1 RRC connection set-up .180 F.3.3.2 RRC connection release180 F.3.4 Radio bearer configuration requirements .181 F.3.4.1 Baseline case.181 F.3.4.2 Optional case 181 F.3.5 SATIN transport channel conf
27、iguration .181 F.3.5.1 Baseline case.181 F.3.5.2 Optional case 181 F.3.6 Physical channel configuration.181 F.3.6.1 Baseline case.181 F.3.6.2 Optional case 181 Annex G: ESA/3GNetSim182 G.1 Introduction 182 G.2 Uu aspects 182 G.2.1 Enhanced open-loop power control182 G.2.2 Cell breathing .182 G.2.3 D
28、ownlink Shared CHannel (DSCH) and signalling concept183 ETSI ETSI TR 102 061 V1.1.1 (2004-05) 6 G.2.4 Combined FEC/interleaving.183 G.3 Iu aspects185 G.3.1 Compatibility issue T-/S-UMTS at Iu interface .185 G.3.1.1 TS 123 107 - Quality of Service (QoS) concept and architecture.185 G.3.1.2 TS 124 008
29、 - Core network protocols, stage 3186 G.3.2 MBMS187 G.3.2.1 Summary of Iu and CN MBMS procedures187 G.3.2.2 Expected deviations to T-UMTS MBMS .187 G.4 User / traffic / application aspects 188 Annex H: Packet data transmission in the GAUSS System189 H.1 The GAUSS system .189 H.2 The GAUSS data packe
30、t.190 H.3 GAUSS access and control subsystem.193 H.4 Study on RLC configuration for GAUSS system.194 H.4.1 RLC services and functions194 H.4.2 RLC study in GAUSS scenario 195 H.4.3 A suitable RLC configuration 196 H.4.4 A mechanism to avoid useless re-transmission 196 H.5 GAUSS forward link physical
31、 layer.202 H.6 GAUSS return link physical layer203 History 205 ETSI ETSI TR 102 061 V1.1.1 (2004-05) 7 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly
32、available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
33、server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or ma
34、y be, or may become, essential to the present document. Foreword This Technical Report (TR) has been produced by ETSI Technical Committee Satellite Earth Stations and Systems (SES). ETSI ETSI TR 102 061 V1.1.1 (2004-05) 8 1 Scope The present document evaluates the possibility of using packet access
35、mode for satellite. The objective of the present document is to design and demonstrate the realistic feasibility of the packet access mode transmission over satellite and its applications, which eventually will lead to the specifications for this type of access. Packets are relatively small units of
36、 data that can be routed through a network based on the destination address contained within each packet 7. Breaking communication down into packets allows the same data path to be shared among many users in the network. For the mobile user, the support for packet-switching means that a persistent l
37、ink is not needed. The same broadcast channel can be shared among a number of users at the same time. The users modem recognizes the packets intended for its user. As data such as e-mail arrives, it is forwarded immediately to the user without a circuit connection having to be established. According
38、 to 8, in UMTS four different traffic classes can be defined: conversational; streaming; interactive; background classes. The last two can be considered as packet data traffic. Conversational and streaming classes are assumed to be transmitted as real-time connections over the air interface. As an e
39、xample of this traffic, one can imagine a packet session during which one or several packet calls can be generated., so that the packet constitutes a bursty sequence of packets. The burstiness during the packet call is a characteristic feature of the packet transmission. For example, in a web-browsi
40、ng session a packet call corresponds to the downloading of the document. After the document is entirely received by the terminal, the user takes a certain time to study the information. This interval is called “reading time“. The following parameters describe the characteristics of the packet data t
41、raffic: session arrival process; number of packet calls per session; reading time between packet calls; number of packets within a packet call; time interval between two packets inside a packet call; packet size. The properties that are typical for non-real-time packet services from the air interfac
42、e point of view are listed below: Packet data is bursty. The required bit rate can change rapidly from zero to hundreds of kilobits per second. Tolerates longer delay than real-time services. Packets can be retransmitted. The methodology followed to create the present document was to include six con
43、tributions 9, 10, 11, 12, 13 and 14 from four projects: ATB; SATIN; 3GNetSim; and GAUSS. ETSI ETSI TR 102 061 V1.1.1 (2004-05) 9 A description of each project is given in clause 4, whilst the reader can find more detailed descriptions of the simulations in the annexes of the present document. In WCD
44、MA there are three types of transport channels that can be used to transmit packet data: common, dedicated and shared. Each of the contributions will choose the physical layer that best adapts to the particular scenario of each project, and this is what is presented in the present document. Converge
45、nce between the different proposed solutions will be needed. Another issue the reader has to take into account is that each of the contributions is focused in a different layer aspects. The ATB project explains the optimum physical layer for the satellite environment in the first contribution and th
46、e multicast feasibility in the second contribution, SATIN project also explains the problematic with layers 2 and 2+ and GAUSS project describes the RLC for a particular application. The first contribution from ATB titled “SW-CDMA Packet Access“ explains the “packet access“ in the unicast mode (poin
47、t to point), although the concept “packet access“ is a more general and includes multicast and narrowcast transmissions (point to multi-point). For the scenario of these simulations it has to be noted that the GEO satellite constellation case has been considered as baseline as it is considered to re
48、present the most challenging configuration for the analysis of the packet mode. However, results are considered applicable also to other satellite constellations. The second contribution from the ATB consortium was an investigation on the feasibility of packet access for point to multi-point communi
49、cations. Specifically the submission investigates: large block interleaving and RS coding; medium block interleaver with CRC; hybrid short Carousel and FEC with interleaving; and narrowcasting. These two contributions from the ATB focus on the technical aspects of this type of access. ATB Phase I activity had the objective of investigating strategies for packet support in SW-CDMA, analysing the techniques currently proposed for supporting the packet mode of T-UMTS W-CDMA 3GPP air interface (Release 99 and the still on-go
