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TS 24.250
Protocol for Reliable Communication Service
between UE and SCEF

3GPP‑Page   ETSI‑search   fToC↓   Partial Content →
V19.0.0 (PDF)  2025/06  39 p.
V18.0.0  2024/03  41 p.
V17.0.0  2020/12  41 p.
V16.4.0  2020/12  36 p.
V15.1.0  2018/12  23 p.
V14.2.0  2018/12  23 p.
Rapporteur:
Mr. Gupta, Vivek
Intel Corporation (UK) Ltd

full Table of Contents for  TS 24.250  Word version:  19.0.0

each clause number in 'red' refers to the equivalent title in the Partial Content
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1Scope  p. 7
2References  p. 7
3Definitions and abbreviations  p. 7
3.1Definitions  p. 7
3.2Abbreviations  p. 8
4Overview  p. 8
4.1General  p. 8
4.2Reference Model  p. 8
4.3Description of RDS protocol  p. 9
4.3.1Protocol functions  p. 9
4.3.2Acknowledged operation  p. 10
4.3.3Unacknowledged operation  p. 10
5Frame structure and format of fields  p. 10
5.1General  p. 10
5.2Address and Control field  p. 10
5.2.1Address and Control field format  p. 10
5.2.2Protocol Discriminator bit (PD)  p. 12
5.2.3Address bit (ADS)  p. 12
5.2.4Source port number (Source Port)  p. 12
5.2.5Destination port number (Destination Port)  p. 12
5.2.6Information transfer frame - I  p. 13
5.2.7Supervisory frame - S  p. 13
5.2.8Unconfirmed Information frame - UI  p. 13
5.2.9Unnumbered frame U  p. 13
5.2.10Command / Response bit (C/R)  p. 13
5.3Control field parameters and associated state variables  p. 13
5.3.1Acknowledgement request bit (A)  p. 13
5.3.2Acknowledged operation variables and parameters  p. 14
5.3.2.1Send state variable V(S)  p. 14
5.3.2.2Acknowledge state variable V(A)  p. 14
5.3.2.3Send sequence number N(S)  p. 14
5.3.2.4Receive state variable V(R)  p. 14
5.3.2.5Receive sequence number N(R)  p. 14
5.3.2.6Selective Acknowledgement (SACK) bitmap R(n)  p. 14
5.3.3Unacknowledged operation variables and parameters  p. 14
5.3.3.1Unconfirmed send state variable V(U)  p. 14
5.3.3.2Unconfirmed sequence number N(U)  p. 15
5.3.3.3Unconfirmed receive state variable V(UR)  p. 15
5.3.3.4Other parameters and variables  p. 15
5.4Commands and responses  p. 15
5.4.1General  p. 15
5.4.2Unnumbered (U) frames  p. 15
5.4.2.1SET_ACK_MODE command  p. 15
5.4.2.2DISCONNECT command  p. 15
5.4.2.3ACCEPT response  p. 16
5.4.2.4ERROR command / response  p. 16
5.4.2.5SET_PARAMETERS command / response  p. 16
5.4.2.6MANAGE_PORT command / response |R16|  p. 17
5.4.2.6.1General  p. 17
5.4.2.6.2Reserve port numbers  p. 19
5.4.2.6.3Release port numbers  p. 21
5.4.2.6.4Query port numbers  p. 21
5.4.2.6.5Notify port numbers  p. 24
5.4.3Information (I) and Supervisory (S) frames  p. 26
5.4.3.1General  p. 26
5.4.3.2Selective Acknowledgement (SACK) command / response  p. 26
6Protocol procedures  p. 27
6.1Overview  p. 27
6.2Procedures  p. 27
6.2.1Types of RDS procedures  p. 27
6.2.2Establishment of acknowledged transfer procedure  p. 27
6.2.2.1General  p. 27
6.2.2.2Establishment of acknowledged transfer procedure initiation  p. 27
6.2.2.3Establishment of acknowledged transfer procedure accepted by receiver  p. 28
6.2.2.4Establishment of acknowledged transfer procedure completed by originator  p. 28
6.2.2.5Establishment of acknowledged transfer procedure not accepted by receiver  p. 28
6.2.3Acknowledged information transfer procedure  p. 29
6.2.3.1General  p. 29
6.2.3.2Transmitting I frames and requesting acknowledgements  p. 29
6.2.3.3Receiving I frames and sending acknowledgements  p. 30
6.2.3.4Receiving acknowledgements  p. 30
6.2.4Termination of acknowledged transfer procedure  p. 31
6.2.4.1General  p. 31
6.2.4.2Termination of acknowledged transfer procedure initiation  p. 31
6.2.4.3Termination of acknowledged transfer procedure accepted by receiver  p. 31
6.2.4.4Termination of acknowledged transfer procedure completed by originator  p. 31
6.2.4.5Termination of acknowledged transfer procedure not accepted by receiver  p. 32
6.2.5Unacknowledged information transfer procedure  p. 32
6.2.5.1General  p. 32
6.2.5.2Unacknowledged information transfer procedure initiation  p. 32
6.2.5.3Unacknowledged information transfer procedure accepted by receiver  p. 32
6.2.5.4Unacknowledged information transfer procedure completed by originator  p. 32
6.2.5.5Unacknowledged information transfer procedure not accepted by receiver  p. 32
6.2.6Reserve port numbers procedure |R16|  p. 33
6.2.6.1General  p. 33
6.2.6.2Reserve port numbers procedure initiation  p. 33
6.2.6.3Reserve port numbers procedure accepted by receiver  p. 33
6.2.6.4Reserve port numbers procedure completed by originator  p. 33
6.2.6.5Reserve port numbers procedure not accepted by receiver  p. 34
6.2.7Release port numbers procedure |R16|  p. 34
6.2.7.1General  p. 34
6.2.7.2Release port numbers procedure initiation  p. 34
6.2.7.3Release port numbers procedure accepted by receiver  p. 34
6.2.7.4Release port numbers procedure completed by originator  p. 34
6.2.7.5Release port numbers procedure not accepted by receiver  p. 35
6.2.8Query port numbers procedure |R16|  p. 35
6.2.8.1General  p. 35
6.2.8.2Query port numbers procedure initiation  p. 35
6.2.8.3Query port numbers procedure accepted by receiver  p. 35
6.2.8.4Query port numbers procedure completed by originator  p. 35
6.2.9Notify port numbers procedure |R16|  p. 36
6.2.9.1General  p. 36
6.2.9.2Notify port numbers procedure initiation  p. 36
6.2.9.3Notify port numbers procedure accepted by receiver  p. 36
6.3Abnormal cases  p. 37
6.3.1Expiry of timer T200  p. 37
6.3.2Expiry of timer T201  p. 37
6.3.3Collision during reserving the same port number between originator and receiver |R16|  p. 37
6.4List of RDS Parameters  p. 37
6.4.1General  p. 37
6.4.2RDS version number (Version)  p. 37
6.4.3Retransmission timers (T200 and T201)  p. 37
6.4.4Maximum number of retransmissions (N200)  p. 38
6.4.5Maximum number of outstanding I frames (k)  p. 38
6.4.6Maximum length of Information Field (N201)  p. 38
$Change history  p. 39

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