ETSI TS 148 016 V13.0.0 (2016-01)

ETSI TS 1148 016 V13.0.0 (201616-01)






TECHNICAL SPECIFICATIONION
Digital cellular telecocommunications system (Phahase 2+);
General Paackec t Radio Service (GPRS);
Base S Station System (BSS) -
Serving GPRS SSupport Node (SGSN) interfarface;
NNetwork service
(3GPP TS 48.0.016 version 13.0.0 Release 1313)

R
GLOBAL SYSTTEME FOR
MOBILE COMMUUNNICATIONS

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3GPP TS 48.016 version 13.0.0 Release 13 1 ETSI TS 148 016 V13.0.0 (2016-01)



Reference
RTS/TSGG-0248016vd00
Keywords
GSM
ETSI
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3GPP TS 48.016 version 13.0.0 Release 13 2 ETSI TS 148 016 V13.0.0 (2016-01)
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 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
server (https://ipr.etsi.org/).
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 may be, or may become, essential to the present document.
Foreword
This Technical Specification (TS) has 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 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 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

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3GPP TS 48.016 version 13.0.0 Release 13 3 ETSI TS 148 016 V13.0.0 (2016-01)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 6
1 Scope . 7
2 References . 7
3 Definitions, symbols and abbreviations . 8
3.1 Definitions . 8
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Network Service general description . 10
4.1 Overview . 10
4.2 Addressing . 11
4.2.1 Network Service Virtual Link (NS-VL) . 11
4.2.2 Network Service Virtual Connection (NS-VC) . 12
4.2.3 Network Service Virtual Connection Group . 13
4.2.4 BSSGP Virtual Connection (BVC) . 13
4.2.5 Use of Concepts on the Gb Interface when Intra Domain Connection of RAN Nodes to Multiple CN
Nodes applies in the BSS . 14
4.3 Sub-Network Service functions . 14
4.4 Load sharing function . 15
4.4.1 Load Sharing function for the Frame Relay Sub-Network . 15
4.4.1.1 Overview . 15
4.4.1.2 Requirements on load sharing function . 15
4.4.2 Load sharing function for the IP Sub-Network . 15
4.4.2.1 Overview . 15
4.4.2.2 Selection of the local IP endpoint . 16
4.4.2.3 Selection of the remote IP endpoint . 16
4.4.2.3.1 Selection of remote IP endpoint for data traffic . 16
4.4.2.3.2 Selection of remote IP endpoint for signalling traffic . 17
4.4a Resource distribution function . 17
4.4a.1 Requirements on resource distribution function . 17
4.5 NS-VC management function . 18
4.5.1 Blocking / unblocking of an NS-VC . 18
4.5.2 Reset of an NS-VC . 18
4.5.3 Test of an NS-VC . 19
5 Elements for layer-to-layer communication . 19
5.1 Service primitive model . 19
5.2 Service primitives and parameters . 19
5.2.1 Primitives . 20
5.2.1.1 NS-UNITDATA-Request . 20
5.2.1.2 NS-UNITDATA-Indication . 20
5.2.1.3 NS-CONGESTION-Indication . 20
5.2.1.4 NS-STATUS-Indication . 20
5.2.2 Parameters. 20
5.2.2.1 NS SDU . 20
5.2.2.2 Link Selector Parameter . 21
5.2.2.3 BVCI I and NSEI . 21
5.2.2.4 Congestion cause . 21
5.2.2.5 Transfer capability . 21
5.2.2.6 NS affecting cause. 21
5.2.2.7 NS change IP endpoint . 21
ETSI

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3GPP TS 48.016 version 13.0.0 Release 13 4 ETSI TS 148 016 V13.0.0 (2016-01)
6 Sub-Network Service protocol . 22
6.1 Frame Relay support of the Sub-Network Service protocol . 22
6.1.1 Overview . 22
6.1.2 Network configuration . 22
6.1.3 Services expected from layer 1 . 23
6.1.4 Options selected from FRF 1.1 . 23
6.1.4.1 Support of DL-CONTROL sub-layer. 23
6.1.4.2 Frame length . 23
6.1.4.3 Congestion control procedures . 23
6.1.4.3.1 DE bit usage . 23
6.1.4.3.2 FECN and BECN bit usage . 23
6.1.4.4 Signalling procedures . 24
6.1.4.5 C/R bit usage . 24
6.1.5 Abnormal conditions. 24
6.2 IP Support of the Sub-Network Service Protocol . 24
6.2.1 Overview . 24
6.2.1a Abnormal Conditions . 25
6.2.2 IP Fragmentation . 25
6.2.3 Services expected from layer 1 and layer 2 . 25
6.2.4 Size Procedure . 25
6.2.4.1 Abnormal Conditions . 26
6.2.5 Configuration Procedure . 26
6.2.5.1 Abnormal Conditions . 27
6.2.6 Add Procedure . 28
6.2.6.1 Abnormal Conditions . 28
6.2.7 Delete Procedure . 29
6.2.7.1 Abnormal Conditions . 29
6.2.8 ChangeWeight Procedure . 29
6.2.8.1 Abnormal Conditions . 30
7 Network Service Control protocol . 30
7.1 Procedures for the transmission of NS SDUs . 30
7.1.1 Abnormal Conditions . 30
7.2 Blocking / unblocking procedures . 30
7.2.1 Abnormal Conditions . 32
7.3 Reset procedure . 32
7.3.1 Abnormal conditions. 33
7.4 Test procedure for a Frame Relay Sub-network . 33
7.4.1 Abnormal conditions. 34
7.4b Test Procedure for an IP Sub-network . 34
7.4b.1 Abnormal Conditions . 34
7.4b.1.1 Abnormal Conditions for signalling endpoints . 34
7.4b.1.2 Abnormal Conditions for data endpoints . 35
7.5 Procedure for error reporting . 35
7.5.1 Abnormal conditions. 35
7.6 Resource Distribution Procedure . 35
7.6.1 Abnormal Conditions . 36
8 General protocol error handling . 36
8.1 General case . 36
8.1.1 Presence requirements of Information Elements . 36
8.1.2 Erroneous events . 37
8.1.3 Non-erroneous events . 37
8.1.4 Other events . 38
8.2 Special cases . 38
8.2.1 Deviations from the "General case" sub-clause . 38
8.2.2 Error reporting . 38
9 General PDU definitions and contents . 38
9.1 General structure of a PDU . 38
9.2 Network Service Control PDUs . 39
9.2.1 NS-ALIVE . 39
9.2.2 NS-ALIVE-ACK . 40
ETSI

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3GPP TS 48.016 version 13.0.0 Release 13 5 ETSI TS 148 016 V13.0.0 (2016-01)
9.2.3 NS-BLOCK . 40
9.2.4 NS-BLOCK-ACK . 40
9.2.5 NS-RESET . 41
9.2.6 NS-RESET-ACK . 41
9.2.7 NS-STATUS . 41
9.2.7.1 Static conditions for NS-VCI . 42
9.2.7.2 Static conditions for NS PDU . 42
9.2.7.3 Static conditions for BVCI . 42
9.2.7.4 Static conditions for List of IP4 Elements. 42
9.2.7.5 Static conditions for List of IP6 Elements. 42
9.2.8 NS-UNBLOCK . 43
9.2.9 NS-UNBLOCK-ACK . 43
9.2.10 NS-UNITDATA . 43
9.3 Sub-Network Service Control PDUs . 43
9.3.1 SNS-ACK . 43
9.3.2 SNS-ADD . 44
9.3.3 SNS-CHANGEWEIGHT . 44
9.3.4 SNS-CONFIG . 44
9.3.5 SNS-CONFIG-ACK . 45
9.3.6 SNS-DELETE . 45
9.3.7 SNS-SIZE . 45
9.3.8 SNS-SIZE-ACK . 46
10 General information elements coding . 46
10.1 General structure of the information elements . 46
10.1.1 Information Element Identifier . 47
10.1.2 Length indicator . 47
10.2 Information element description . 47
10.3 Information elements . 48
10.3.1 BVCI . 48
10.3.2 Cause . 48
10.3.2a End Flag . 49
10.3.2b IP Address . 49
10.3.2c List of IP4 Elements . 50
10.3.2d List of IP6 Elements . 50
10.3.2e Maximum Number of NS-VCs . 50
10.3.2f Number of IP4 Endpoints . 51
10.3.2g Number of IP6 Endpoints . 51
10.3.3 NS PDU . 51
10.3.4 NS SDU . 51
10.3.5 NS-VCI . 52
10.3.6 NSEI . 52
10.3.7 PDU type . 52
10.3.7a Reset Flag . 52
10.3.8 (void) . 53
10.3.9 NS SDU Control Bits . 53
10.3.10 Transaction ID . 53
11 List of system variables .
...