ETSI TS 136 360-2016 LTE Evolved Universal Terrestrial Radio Access (E-UTRA) LTE-WLAN Aggregation Adaptation Protocol (LWAAP) specification (V13 0 0 3GPP TS 36 360 version 13 0 0 R.pdf

1、 ETSI TS 1Evolved Universal TLTE-WLAN Aggrega(3GPP TS 36.3TECHNICAL SPECIFICATION136 360 V13.0.0 (2016LTE; l Terrestrial Radio Access (E-gation Adaptation Protocol (Lspecification .360 version 13.0.0 Release 1316-04) UTRA); (LWAAP) 13) ETSI ETSI TS 136 360 V13.0.0 (2016-04)13GPP TS 36.360 version 13

2、.0.0 Release 13Reference DTS/TSGR-0236360vd00 Keywords LTE 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 Impor

3、tant notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written

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8、d for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 136 360 V13.0.0 (2016-04)23GPP TS 36.360 version

9、13.0.0 Release 13Intellectual 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 available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Inte

10、llectual 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 server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, incl

11、uding 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 may be, or may become, essential to the present document. Foreword This Technical Specification (TS) h

12、as been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross

13、reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described

14、 in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 136 360 V13.0.0 (2016-04)33GPP TS 36.360 version 13.0.0 Release 13Contents Intellectual Property Rig

15、hts 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Definitions, symbols and abbreviations . 5g33.1 Definitions 5g33.2 Abbreviations . 5g34 General . 6g34.1 Introduction 6g34.2 LWAAP architecture 6g34.2.1 LWAAP entities 6g34.3 Services 7g34.3.1 Services provide

16、d to upper layers . 7g34.3.2 Services expected from lower layers 7g34.4 Functions 7g35 Procedures 7g35.1 Data transfer procedures . 7g35.1.1 DL data transfer procedures 7g35.2 Handling of unknown, unforeseen and erroneous protocol data 7g36 Protocol data units, formats and parameters . 8g36.1 Protoc

17、ol data units 8g36.1.1 General 8g36.1.2 LWAAP data PDU 8g36.2 Formats and parameters 8g36.2.1 LWAAP header 8g3Annex A (informative): Change history . 9g3History 10g3ETSI ETSI TS 136 360 V13.0.0 (2016-04)43GPP TS 36.360 version 13.0.0 Release 13Foreword This Technical Specification has been produced

18、by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change o

19、f release date and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incremented for all changes of substance,

20、 i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 136 360 V13.0.0 (2016-04)53GPP TS 36.360 version 13.0.0 Release 131 Scope The present document specifies the E-UTRA LTE-WLAN Aggr

21、egation Adaptation Protocol (LWAAP). 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. - References are either specific (identified by date of publication, edition number, version number, etc.) or non-specifi

22、c. - For a specific reference, subsequent revisions do not apply. - For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Releas

23、e as the present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 36.300: “E-UTRA and E-UTRAN Overall Description; Stage 2“. 3 3GPP TS 36.323: “E-UTRA PDCP specification“. 4 3GPP TS 36.331: “E-UTRA RRC Protocol specification“. 3 Definitions, symbols and abbreviations 3.1 D

24、efinitions For the purposes of the present document, the terms and definitions given in TR 21.905 1 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 1. LWA bearer: a bearer used in LTE-WLAN Aggregation, as def

25、ined in TS 36.300 2. 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: DL DownLink DRB Data Radio Bearer eNB E-UTRAN Node B E-UTRA Evolved UMTS Terrestrial Radio Access E-UTRAN Evolved UMTS Terrestrial Radio Access Network LWAAP LTE-WLAN Aggregation Adapt

26、ation Protocol PDCP Packet Data Convergence Protocol PDU Protocol Data Unit RRC Radio Resource Control SAP Service Access Point SDU Service Data Unit UE User EquipmentETSI ETSI TS 136 360 V13.0.0 (2016-04)63GPP TS 36.360 version 13.0.0 Release 134 General 4.1 Introduction The objective is to describ

27、e the LWAAP architecture and the LWAAP entities from a functional point of view. 4.2 LWAAP architecture 4.2.1 LWAAP entities The description in this sub clause is a model and does not specify or restrict implementations. RRC is generally in control of the LWAAP configuration. Functions of the LWAAP

28、sublayer are performed by LWAAP entities. For an LWAAP entity configured at the eNB, there is a peer LWAAP entity configured at the UE and vice versa. For all LWA bearers, there is one LWAAP entity in the eNB and one LWAAP entity in the UE. An LWAAP entity receives/delivers LWAAP SDUs from/to upper

29、layers (i.e. PDCP) and sends/receives LWAAP PDUs to/from its peer LWAAP entity via WLAN: - At the eNB, when an LWAAP entity receives an LWAAP SDU from upper layers, it constructs the corresponding LWAAP PDU and delivers it to lower layers; - At the UE, when an LWAAP entity receives an LWAAP PDU from

30、 lower layers, it reassembles the corresponding LWAAP SDU and delivers it to upper layers. Figure 4.2.1-1 illustrates the overview model of the LWAAP sublayer. Figure 4.2.1-1: Overview model of the LWAAP sublayer ETSI ETSI TS 136 360 V13.0.0 (2016-04)73GPP TS 36.360 version 13.0.0 Release 13An LWAAP

31、 entity delivers/receives the following LWAAP PDU to/from a lower layer entity: - LWAAP data PDU. 4.3 Services 4.3.1 Services provided to upper layers The following services are provided by LWAAP to upper layers (i.e. PDCP): - transfer of user plane data; 4.3.2 Services expected from lower layers Th

32、e following services are expected by LWAAP from lower layers: - transfer of user plane data; 4.4 Functions The following functions are supported by the LWAAP sublayer: - transfer of user plane data; - identification of the LWA bearer to which the LWAAP SDU belongs. 5 Procedures 5.1 Data transfer pro

33、cedures 5.1.1 DL data transfer procedures When receiving an LWAAP data PDU from lower layers, the LWAAP entity in the UE shall: - identify the upper layer entity to which the LWAAP SDU is destined based on the DRB ID included in the LWAAP header; - reassemble the LWAAP SDU from the LWAAP data PDU by

34、 removing the LWAAP header from the LWAAP data PDU; - deliver the reassembled LWAAP SDU to the upper layer entity identified by the DRB ID. 5.2 Handling of unknown, unforeseen and erroneous protocol data When an LWAAP entity receives an LWAAP PDU that contains reserved or invalid values, the LWAAP e

35、ntity shall: - discard the received PDU. ETSI ETSI TS 136 360 V13.0.0 (2016-04)83GPP TS 36.360 version 13.0.0 Release 136 Protocol data units, formats and parameters 6.1 Protocol data units 6.1.1 General An LWAAP PDU is a bit string that is byte aligned (i.e. multiple of 8 bits) in length. In the fi

36、gures in subclause 6.1, bit strings are represented by tables in which the most significant bit is the leftmost bit of the first line of the table, the least significant bit is the rightmost bit on the last line of the table, and more generally the bit string is to be read from left to right and the

37、n in the reading order of the lines. The bit order of each parameter field within an LWAAP PDU is represented with the first and most significant bit in the leftmost bit and the last and least significant bit in the rightmost bit. An LWAAP SDU is a bit string that is byte aligned (i.e. multiple of 8

38、 bits) in length. An LWAAP SDU is included into an LWAAP PDU from the first bit onward. The LWAAP entity shall ignore the value of Reserved bits in downlink LWAAP PDUs. Only one type of LWAAP PDU is defined, i.e. LWAAP data PDU. 6.1.2 LWAAP data PDU An LWAAP PDU consists of an LWAAP header and a Dat

39、a field, as described in Figure 6.1.2-1. An LWAAP header is one byte, and consists of the four header fields R/R/R/DRBID. A Data field is of variable size, and consists of an LWAAP SDU. Figure 6.1.2-1: LWAAP data PDU 6.2 Formats and parameters 6.2.1 LWAAP header The LWAAP header consists of the foll

40、owing fields: - R: Reserved bit, set to “0“. The R field size is 1 bit; - DRBID: The Data Radio Bearer ID field indicates the RRC configured DRB identity to which the corresponding LWAAP SDU belongs. The DRBID field size is 5 bits. ETSI ETSI TS 136 360 V13.0.0 (2016-04)93GPP TS 36.360 version 13.0.0

41、 Release 13Annex A (informative): Change history Change history Date TSG # TSG Doc. CR Rev Subject/Comment Old New 2016-02 RAN2#93 R2-161087 - - draft TS 36.360 v0.0.0 on LTE-WLAN Aggregation Adaptation Protocol (LWAAP) specification after e-mail discussion 92#42LTE/WLAN New specification (LG) - 0.0

42、.0 2016-02 RAN2#93 R2-161787 - - draft TS 36.360 v0.0.1 on LTE-WLAN Aggregation Adaptation Protocol (LWAAP) specification 0.0.0 0.0.1 2016-02 RAN2#93 R2-161986 - - draft TS 36.360 v0.0.2 on LTE-WLAN Aggregation Adaptation Protocol (LWAAP) specification 0.0.1 0.0.2 2016-02 RAN2#93 R2-162023 - - draft

43、 TS 36.360 v0.1.0 on LTE-WLAN Aggregation Adaptation Protocol (LWAAP) specification 0.0.2 0.1.0 2016-02 RAN2#93 R2-162024 - - draft TS 36.360 v1.0.0 on LTE-WLAN Aggregation Adaptation Protocol (LWAAP) specification 0.1.0 1.0.0 2016-03 RP-71 RP-160496 - - Approved at TSG RAN#71 and put under Change Control 1.0.0 13.0.0 ETSI ETSI TS 136 360 V13.0.0 (2016-04)103GPP TS 36.360 version 13.0.0 Release 13History Document history V13.0.0 April 2016 Publication