Source: http://www.slidesearchengine.com/slide/wid-proposal-long-range-cell-operation-for-public-safety-s1-141013
Timestamp: 2020-07-05 07:22:12
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WID proposal: Long range cell operation for public safety (S1-141013), SlideSearchEngine.com
Information about WID proposal: Long range cell operation for public safety (S1-141013)
japan revision service requirements
Author: yihsuehtsai
The SA1 objective is to specify service requirements for:
1. Allowing E-UTRAN to support long-range cell operation for ProSe.
(a) Handling ProSe Communication when public safety UEs could only hear outbound communication.
2. Allowing E-UTRAN to support long-range cell operation for GCSE.
(a) Shorten media transport latency by local routed the group-cast media transports to the UEs without go back to the GCSEserver.
(b) Shorten required time for joining an ongoing group call by using a preconfigured authorization setting.
The scope of the Work Item is limited to Public Safety UEs and Public Safety use.
3GPP TSG-SA WG1 #66 S1-141013 Sapporo, Japan, 12-16 May 2014 (revision of S1-141xxx) Title: WID proposal: Long Range Cell Operation for Public Safety (LCOPS) Source: III, ITRI Contact: Yi-Hsueh Tsai (lucas@iii.org.tw), Hsuan-Li Lin, Terng-Yin Hsu, Jian-Ya Chu Shubhranshu (shubhranshu@itri.org.tw), Zheng Yan-Xiu (zhengyanxiu@itri.org.tw ) Abstract: A new WID proposing normative work for supporting long range cell operation. 3GPP™ Work Item Description For guidance, see 3GPP Working Procedures, article 39; and 3GPP TR 21.900. Title * : Long Range Cell Operation for Public Safety Acronym * : LCOPS Unique identifier * 1 3GPP Work Area * X Radio Access X Core Network X Services 2 Classification of WI and linked work items 2.0 Primary classification * This work item is a … * Study Item (go to 2.1) X Feature (go to 2.2) Building Block (go to 2.3) Work Task (go to 2.4) 2.1 Study Item Related Work Item(s) (if any] Unique ID Title Nature of relationship Go to §3.
2.2 Feature Related Study Item or Feature (if any) * Unique ID Title Nature of relationship 530044 Study on Proximity-based Services (FS_ProSe) TR 22.803 Complementing Study 580059 Proximity-based Services (ProSe) Complementing Feature Stage 1 in TS 22.115, TS 22.278; 560020 Group Communication System Enablers for LTE (GCSE_LTE) Complimentary Feature Stage 1 in TS 22.468; Go to §3. 2.3 Building Block Parent Feature (or Study Item) Unique ID Title TS This work item is … * Stage 1 (go to 2.3.1) Stage 2 (go to 2.3.2) Stage 3 (go to 2.3.3) Test spec (go to 2.3.4) Other (go to 2.3.5) 2.3.1 Stage 1 Source of external requirements (if any) * Organization Document Remarks Go to §3. 2.3.2 Stage 2 * Corresponding stage 1 work item Unique ID Title TS Other source of stage 1 information TS or CR(s) Clause Remarks If no identified source of stage 1 information, justify: * Go to §3. 2.3.3 Stage 3 * Corresponding stage 2 work item (if any) Unique ID Title TS
Else, corresponding stage 1 work item Unique ID Title TS Other justification TS or CR(s) Or external document Clause Remarks If no identified source of stage 2 information, justify: * Go to §3. 2.3.4 Test spec * Related Work Item(s) Unique ID Title TS Go to §3. 2.3.5 Other * Related Work Item(s) Unique ID Title Nature of relationship TS / TR Go to §3. 2.4 Work task * Parent Building Block Unique ID Title TS 3 Justification * A long range cell is required to provide much larger coverage (up to 100km [1]). For larger area, a base station deployed in high attitude such as high tower and with higher power transmission can provide larger coverage [2]. In addition, receivers deployed in the fringe areas can enhance the range. Possible usage scenarios of long range cells are given as following: A. Wireless access solution in areas where infrastructure is difficult to achieve: In areas such as mountain areas, jungles, deserts, or islands, long range cell can provide broadband wireless access solution with good coverage under reasonable cost. B. Disaster first responder: In major disaster, the ground based communication infrastructure may suffer a severe destruction. In such cases, long range cell could be quickly deployed to temporarily replace the ground communication infrastructure and fast recover the wireless networks to enable critical information access such as the communication for rescue mission, or emergency services. Supporting Long-Range Cell for GCSE In the current GCSE architecture in TR 23.768, it requires to routine all group-cast media transports to the GCSE server in EPC and registers all GCSE members to the GCSE server. Therefore, RP-140185 mentions that the required end-to-end delay for media transport may exceed the requirement of 150 ms, and the required time for joining an ongoing group
communication may in worse case exceed the requirement of 300 ms. However, by using long-range cell, those issues can be mitigated by two reasons. 1) Comparing with the current GCSE architecture, long-range cell can shorten the required end-to-end delay by local routed the group-cast media transports to the UEs without go back to the GCSE server in order to meet the maximum latency requirement, 150ms. 2) Comparing with the current GCSE architecture, UE could listen to the group-cast audio channel transmitted from long-rang cell without registering to the GCSE server by using a preconfigured authorization setting. As a consequence, it could quickly join an ongoing group call anonymously. Therefore, if long range cell communications systems were available, it can ensure the group communication among Public Safety officers within its coverage. Supporting Long-Range Cell for ProSe In TR 23703, it mentions that we have to handle out of network coverage scenarios for proximity direct communication in rural area. Therefore, long-range cell is proposed to reduce network converge holes, and thus the phenomenon can be significantly mitigated especially in the rural area. Although, for receivers located in the fringe areas outside the coverage contour can only receive outbound communication, those UEs can still obtain synchronization signal, system information block, and semi-persistent resource management information for establishing direct communication. However, the UE relay, which does not need to relay the downlink traffic in order to efficiently utilize the radio resource, could be used to extend the uplink range using the direct communication link between UE located inside the coverage contour of the system and UE located in the fringe areas outside the coverage contour. Therefore, if long range cell communications systems were available, it can ensure the direct communication between Public Safety officers within its coverage. [1] LTE The UMTS Long Term Evolution from Theory to Practice Ed2 [2] International Telecommunication Union (ITU), “Radio Communications for Emergency Response and Disaster Relief” (http://www.itu.int/ITU-D/asp/CMS/Events/2012/NBTC-disaster/S6_MrBhatia.pdf) 4 Objective * The SA1 objective is to specify service requirements for: • Allowing E-UTRAN to support long-range cell operation for ProSe. o Handling ProSe Communication when public safety UEs could only hear outbound communication. • Allowing E-UTRAN to support long-range cell operation for GCSE. o Shorten media transport latency by local routed the group-cast media transports to the UEs without go back to the GCSEserver. o Shorten required time for joining an ongoing group call by using a preconfigured authorization setting. The scope of the Work Item is limited to Public Safety UEs and Public Safety use. 5 Service Aspects Service aspects will be specified.
6 MMI-Aspects Any potential service impacts will be identified. 7 Charging Aspects Any potential service impacts will be identified. 8 Security Aspects Security aspects will be identified. 9 Impacts * Affects: UICC apps ME AN CN Others Yes X X X No Don't know X - X 10 Expected Output and Time scale * New specifications * [If Study Item, one TR is anticipated] Spec No. Title Prime rsp. WG 2ndary rsp. WG(s) Presented for information at plenary# Approved at plenary# Comments Affected existing specifications * [None in the case of Study Items] Spec No. CR Subject Approved at plenary# Comments 22.278 0199 Support Long Range Cell Operation for ProSe SA#64 (June 2014) S1-141010 22.468 0002 Support Long Range Cell Operation for GCSE SA#64 (June 2014) S1-141012 11 Work item rapporteur(s) * Hsuan-Li Lin (x3232.lin@gmail.com) Yi-Hsueh Tsai (lucas@iii.org.tw), 12 Work item leadership * SA1
13 Supporting Individual Members * Supporting IM name Institute for Information Industry (III) ITRI
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