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3GPP TS 36.422 V8.6.0 (2009-12)Technical Specification

3rd Generation Partnership Project;Technical Specification Group Radio Access Network;

Evolved Universal Terrestrial Access Network E!UTRAN";#$ si%nalin% transport

Release &"

The present document has been developed within the 3rdGeneration Partnership Project (3GPPTM) and may be further elaborated for the purposes of 3GPP.

The present document has not been subject to any approval process by the 3GPP Orani!ational Partners and shall not be implemented.

This "pecification is provided for future development wor# within 3GPP only. The Orani!ational Partners accept no liability for any use of this

"pecification."pecifications and reports for implementation of the 3GPPTMsystem should be obtained via the 3GPP Orani!ational Partners$ Publications Offices.

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%eywordsLTE, radio

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Copyright Notification

'o part may be reproduced ecept as authori!ed by written permission.The copyriht and the foreoin restriction etend to reproduction in all

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*++,- 3GPP Orani!ational Partners (/&0- T&"- 11"- 2T"&- TT- TT1).

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3GPP4 is a Trade Mar# of 2T"& reistered for the benefit of its Members and of the 3GPP Orani!ational Partners

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G"M6 and the G"M loo are reistered and owned by the G"M ssociation

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*o&te&t

=oreword..........................................................................................................................................................

< "cope......................................................................................................................................................

* /eferences..............................................................................................................................................

3 >efinitions- symbols and abbreviations..................................................................................................3.< >efinitions...........................................................................................................................................................3.3 bbreviations.......................................................................................................................................................

8. ?* sinallin bearer...............................................................................................................................8.< =unction and protocol stac#.................................................................................................................................

@ >ata lin# layer........................................................................................................................................

7 &P layer...................................................................................................................................................

A Transport layer........................................................................................................................................

Annex A (informative): Change History...............................................................................................

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oreord

This Technical "pecification has been produced by the 3rdGeneration Partnership Project (3GPP).

The contents of the present document are subject to continuin wor# within the T"G and may chane followin formalT"G approval. "hould the T"G modify the contents of the present document- it will be re;released by the T"G with anidentifyin chane of release date and an increase in version number as followsB

9ersion .y.!

whereB

the first diitB

< presented to T"G for informationC

* presented to T"G for approvalC

3 or reater indicates T"G approved document under chane control.

y the second diit is incremented for all chanes of substance- i.e. technical enhancements- corrections-updates- etc.

! the third diit is incremented when editorial only chanes have been incorporated in the document.

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1 S!o#e

The present document specifies the standards for "inallin Transport to be used across ?* interface. ?* interface is aloical interface between e'0s. The present document describes how the ?*;P sinallin messaes are transported

over ?*.

2 Reere&!e

The followin documents contain provisions which- throuh reference in this tet- constitute provisions of the presentdocument.

/eferences are either specific (identified by date of publication- edition number- version number- etc.) or

non;specific.

=or a specific reference- subseDuent revisions do not apply.

=or a non;specific reference- the latest version applies. &n the case of a reference to a 3GPP document (includin

a G"M document)- a non;specific reference implicitly refers to the latest version of that document in the same

Release as the present document.

E" =ield) inthe &Pv8 and &Pv7 Headers.

E@F &2T= /=1 8,7+ ("eptember *++A)B "tream 1ontrol Transmission Protocol.

3 ei&itio&, 'o" a&d a''reiatio&

3.1 ei&itio&

=or the purposes of the present document- the terms and definitions iven in Eiff"erv >ifferentiated "ervice&' &nternet ssined 'umber uthority&P &nternet ProtocolPPP Point to Point Protocol"1TP "tream 1ontrol Transmission Protocol

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4. 72 i&a""i& 'earer

4.1 u&!tio& a&d #roto!o" ta!

?* sinallin bearer provides the followin functionsB

; Provision of reliable transfer of ?*;P messae over ?* interface.

; Provision of networ#in and routein function

; Provision of redundancy in the sinallin networ#

; "upport for flow control and conestion control

The protocol stac# for ?* "inallin 0earer is shown in fiure 8.< and details on each protocol are described in thefollowin sections.

'i%ure ()*+ #$ si%nallin% ,earer protocol stack

The Transport 'etwor# 5ayer is based on &P transport- comprisin "1TP on top of &P.

5 ata "i& "aer

The support of any suitable >ata 5in# 5ayer protocol- e.. PPP- 2thernet- etc. - shall not be prevented.

6 P "aer The e'0 shall support &Pv7 E*F andIor &Pv8 E3F.

The &P layer of ?* only supports point;to;point transmission for deliverin ?*;P messae.

The e'0 shall support the >iffserv 1ode Point mar#in as described in E8F.

Traort "aer

"1TP E@F shall be supported as the transport layer of ?* sinallin bearer.

"1TP refers to the "tream 1ontrol Transmission Protocol developed by the "itran wor#in roup of the &2T= for thepurpose of transportin various sinallin protocols over &P networ#.

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There shall be only one "1TP association established between one e'0 pair. n e'0 shall use the >estination Port'umber value 378** assined by &' to be used for ?*P and this value shall also be used in "ource Port 'umberby all e'0s within a networ#.

'OT2B multi;homed e'0 implementation should provide the correspondent e'0 with the set of &P addressessupported durin "1TP association establishment unless the correspondent e'0 already has this

information e.. throuh &P address manaement.n arbitrary e'0 shall be able to initiate the &'&T procedure towards another e'0 for establishin the "1TP

association.

Jithin the "1TP association established between one e'0 pairC

; a sinle pair of stream identifiers shall be reserved for the sole use of ?*P elementary procedures that utili!e

non 2;associated sinallin.

; t least one pair of stream identifiers shall be reserved for the sole use of ?*P elementary procedures thatutili!e 2;associated sinallin. However a few pairs (i.e. more than one) should be reserved.

; sinle 2;associated sinallin shall use one "1TP stream and the stream should not be chaned durin the

communication of the 2;associated sinallin.Transport networ# redundancy may be achieved by "1TP multi;homin between two end;points- of which one or bothis assined with multiple &P addresses. "1TP end;points shall support a multi;homed remote "1TP end;point. =or "1TPendpoint redundancy an &'&T may be sent from either of the e'0s- at any time for an already established "1TP

association- which shall be handled as defined in E@F in K @.*.

The "1TP conestion control may- usin an implementation specific mechanism- initiate hiher layer protocols toreduce the sinallin traffic at the source and prioritise certain messaes.

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%&&e % (i&oratie)+*$a&e :itorTSG - TSG .oc) /R Rev Su,ject0/o11ent New

38 %#e!ii!atio& a##roed at TSG-R% a&d #"a!ed u&der !$a&e !o&tro" 8.0.0

39 RP-0800 0001 - edi!atio& o !oo& trea oer 72 8.1.0

40 RP-080301 0003 - S*TP "o !o&tro" a&d oer"oad #rote!tio& 8.2.0

41 RP-080583 0005 1 *orre!t t$e ordi& o !oo& a&d dedi!ated #ro!edure 8.3.0

41 RP-080583 0006 2 S*TP retart u&!tio& or 72 i&tera!e 8.3.0

41 RP-080583 000 - *"arii!atio& o S*TP *o&etio& &di!atio& oer 72 8.3.0

42 RP-080855 0008 1 urt$er !"arii!atio& o S*TP %o!iatio& $a&d"i& 8.4.0

42 RP-080855 0009 Reoa" o !$a#ter 8 8.4.0

43 RP-090090 0010 1 T$e ue o t$e &u'er o trea or a ;E-ao!iated i&a""i& 8.5.0

43 RP-090085 0011 1 *"arii!atio& o S*TP trea 8.5.0

43 RP-090085 0012 1 *"arii!atio& t$e oer"oad #rote!tio& u&!tio& u##ort i& S*TP 8.5.0

46 RP-091183 0014 1 S#e!ii!atio& o S*TP deti&atio& #ort &u'er 8.6.0

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