5.5.11 Default MCVideo Transmission Control Messages and other Information Elements

36.579-13GPPMission Critical (MC) services over LTEPart 1: Common test environmentRelease 15TS

5.5.11.0 General

The following conditions apply throughout clause 5.5.11:

Table 5.5.11.0-1: Conditions

Condition

Explanation

FA

IE for when an active Functional Alias is used

ACK

Message requests a Transmission control Ack

UPLINK

The message is sent from the UE

DOWNLINK

The message is sent from the SS

NOTE: For further conditions see table 5.5.1-1

Considerations in regard to describing specific values:

– SSRC

– Synchronization SouRCe (SSRC) values are used in most of the messages specified in clause 5.5.11. The SSRC value is randomly chosen by the participant in, and globally unique within, an RTP session as specified in IETF RFC 3550 [76]. Because the value chosen by the UE (MCVideo client) cannot be controlled, specifying a "hard coded" value to be used by the SS (MCVideo Server) or the SS-UE (MCVideo Client) is prone to triggering a collision by choosing a value which may be the same as the one chosen by the UE. How to resolve SSRC collisions is described in IETF RFC 3550 [76] however, resolving them as part of the MCVideo test case definitions e.g. in TS 36.579-6 [84] is not foreseen and is left to the test implementation.

– For the purposes of default and specific messages definition throughout the present specification, as well as, throughout the rest of the MCPTT conformance test specifications e.g. the TS 36.579-6 [84] no explicit SSRC values are defined.

5.5.11.1 Transmission Control Specific Messages Sent by the Transmission Participant

5.5.11.1.1 Transmission Request

Table 5.5.11.1.1-1: Transmission Request

Derivation Path: TS 24.581 [88] Table 9.2.4-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP-header

Subtype

“00000”

Transmission Request

TS 24.581 [88] clause 9.2.4 and Table 9.2.2.1-1

“10000”

ACK

SSRC

The SSRC of the UE

The SSRC of the transmission participant sending the Transmission Request message.

IETF RFC 3550 [76].

The SSRC of the message sender

OFF-NETWORK

name

MCV0

Transmission Priority

If present

TS 24.581 [88] clause 9.2.3.2

Transmission Priority Value

Any allowed value

If present, a value between ‘0’ and ‘255’ where ‘0’ is the lowest priority and ‘255’ is the highest priority.

If the Transmission Priority field is not included in the message the default priority is used as the Transmission Priority value. The value of the default priority is ‘0’. The default priority is sometimes referred to as normal priority.

User ID

Not Present

User ID

The User ID field is used in off-network only. The User ID field carries the MCVideo ID of the transmission participant sending the Transmission Release message.

TS 24.581 [88] clause 9.2.3.8

OFF-NETWORK

User ID

px_MCVideo_ID_User_A

Transmission Indicator

TS 24.581 [88] clause 9.2.3.11

Transmission Indicator

"1000000000000000"

Normal call

"0001000000000000"

Emergency call

EMERGENCY-CALL

"0000100000000000"

Imminent peril call

IMMPERIL-CALL

Functional Alias

Not present

px_MCVideo_ID_FA_B

functional alias URI of the transmitting user

TS 24.581 [88] clause 9.2.3.21

FA

5.5.11.1.2 Transmission Release

Table 5.5.11.1.2-1: Transmission Release

Derivation Path: TS 24.581 [88] Table 9.2.7-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP-header

Subtype

“00010”

Transmission Release

TS 24.581 [88] clause 9.2.7 and Table 9.2.2.1-1

“10010”

ACK

SSRC

The SSRC of the UE

The SSRC of the transmission participant with permission to send media.

IETF RFC 3550 [76].

The SSRC of the message sender

OFF-NETWORK

name

MCV0

User ID

Not Present

User ID

The User ID field is used in off-network only. The User ID field carries the MCVideo ID of the transmission participant sending the Transmission Release message.

TS 24.581 [88] clause 9.2.3.8

OFF-NETWORK

User ID

px_MCVideo_ID_User_A

Transmission Indicator

Transmission Indicator

"1000000000000000"

Normal call

TS 24.581 [88] clause 9.2.3.11

"0001000000000000"

Emergency call

EMERGENCY-CALL

"0000100000000000"

Imminent peril call

IMMPERIL-CALL

5.5.11.1.3 Queue Position Request

Table 5.5.11.1.3-1: Queue Position Request

Derivation Path: TS 24.581 [88] Table 9.2.11-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“00011”

Queue Position Request

TS 24.581 [88] clause 9.2.11 and 9.2.2.1-1

“10011”

ACK

SSRC

The SSRC of the UE

The SSRC of the transmission participant requesting information about its position in the transmission request queue.

IETF RFC 3550 [76],

The SSRC of the message sender

OFF-NETWORK

name

MCV0

User ID

Not Present

User ID

TS 24.581 [88] clause 9.2.3.8

OFF-NETWORK

User ID

px_MCVideo_ID_User_A

Track Info

Not present

The MCVideo call does not involve a non-controlling MCVideo function

TS 24.581 [88] clause 9.2.3.13

5.5.11.1.4 Receive Media Request

Table 5.5.11.1.4-1: Receive Media Request

Derivation Path: TS 24.581 [88] Table 9.2.14-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“00100”

Receive Media Request

TS 24.581 [88] clause 9.2.14 and 9.2.2.1-1

“10100”

ACK

SSRC

The SSRC of the UE

The SSRC of the transmission participant requesting the reception of the media from another user.

IETF RFC 3550 [76]

The SSRC of the message sender

OFF-NETWORK

name

MCV0

User ID

The User ID field is used to carry the identity of the user who is requesting the reception of the media.

User ID

px_MCVideo_ID_User_A

TS 24.581 [88] Table 9.2.3.8-2

SSRC of transmitter

SSRC of the emulated client as provided by the SS in the Media Transmission Notification message

The SSRC of the user transmitting the media

Transmission Indicator

TS 24.581 [88] clause 9.2.3.11

Transmission Indicator

"1000000000000000"

Normal call

"0001000000000000"

Emergency call

EMERGENCY-CALL

"0000100000000000"

Imminent peril call

IMMPERIL-CALL

Reception Priority

if present

Describes the level of reception priority requested in a Reception Request message or granted in a Reception Granted message. The max reception priority that can be requested in a Reception Request message is negotiated between the transmission control participant and the transmission control server

TS 24.581 [88] clause 9.2.3.19 and 6.2.5.3.3

Reception Priority value

any allowed value

The reception priority (0 to 255) where 0 is the lowest reception priority and 255 is the highest reception priority. If the Reception Priority field is not included in the message the default reception priority is used as the Reception Priority value. The value of the default reception priority is 0. The default reception priority is sometimes referred to as normal reception priority.

Track Info

Not present

The MCVideo call does not involve a non-controlling MCVideo function

TS 24.581 [88] clause 9.2.3.13

Functional Alias

Not present

px_MCVideo_ID_FA_B

functional alias URI of the transmitting user

TS 24.581 [88]clause 9.2.3.21

FA

5.5.11.1.5 Void
5.5.11.1.6 Remote Transmission Request

Table 5.5.11.1.6-1: Remote Transmission Request

Derivation Path: TS 24.581 [88] Table 9.2.22-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“00111”

Remote Transmission Request

TS 24.581 [88] clause 9.2.22 and Table 9.2.2.1-1

“10111”

ACK

SSRC

The SSRC of the UE

The SSRC of the transmission participant requesting the reception of the media from another user.

IETF RFC 3550 [76].

The SSRC of the message sender

OFF-NETWORK

name

MCV0

Remote ID

Carries the identity of the user who remotely initiated the media transmission of another user.

TS 24.581 [88] clause 9.2.3.8

User ID

px_MCVideo_ID_User_B

User ID

Carries the identity of the user whose media transmission is requested.

TS 24.581 [88] clause 9.2.3.8

User ID

px_MCVideo_ID_User_A

5.5.11.1.7 Remote Transmission Cancel Request

Table 5.5.11.1.7-1: Remote Transmission Cancel Request

Derivation Path: TS 24.581 [88] Table 9.2.24-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“01000”

Remote transmission cancel request

TS 24.581 [88] clause 9.2.24 and Table 9.2.2.1-1

“11000”

ACK

SSRC

The SSRC of the UE

Editor’s note: TS 24.581 specifies "SSRC of the transmission participant requesting the reception of the media from another user"

IETF RFC 3550 [76].

The SSRC of the message sender

OFF-NETWORK

name

MCV0

User ID

Carries the identity of the user whose media transmission is requested for cancellation.

TS 24.581 [88] clause 9.2.3.8

User ID

px_MCVideo_ID_User_A

5.5.11.2 Transmission Control Specific Messages Sent by the Transmission Control Server

5.5.11.2.1 Transmission Granted

Table 5.5.11.2.1-1: Transmission Granted

Derivation Path: TS 24.581 [88] Table 9.2.5-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“00000”

Transmission granted

TS 24.581 [88] clause 9.2.5 and 9.2.2.1-2

“10000”

ACK

SSRC

The SSRC of the SS

The SSRC of the Transmission Control server

IETF RFC 3550 [76].

The SSRC of the message sender

The SSRC of the transmission arbitrator

OFF-NETWORK

name

MCV1

Transmission Control messages sent by the transmission control server and transmission control participant

Duration

TS 24.581 [88] clause 9.2.3.3

Duration

"00000000 10000000"

128 sec (an arbitrary value)

SSRC of granted transmission participant

The SSRC of the intended recipient of the message

IETF RFC 3550 [76]

Transmission priority

Not present

If the Transmission Priority field is not included in the message the default priority (=’0′) is used as the Floor Priority value

User ID

Not present

User ID

TS 24.581 [88] clause 9.2.3.8

OFF-NETWORK

User ID

px_MCVideo_ID_User_A

Queue Size

Not present

Queue Size

"0"

the number of queued MCVideo clients in the MCVideo call

TS 24.581 [88] clause 9.2.3.15

OFF-NETWORK

SSRC of queued floor participant

Not present

The SSRC of queued transmission participant

IETF RFC 3550 [76]

OFF-NETWORK

Queued User ID

Not present

px_MCVideo_ID_User_C

MCVideo ID of the transmission participant in the queue

TS 24.581 [88] clause 9.2.3.14

OFF-NETWORK

Queue Info

Not present

Queue Info

queue position and granted transmission priority in the queue

OFF-NETWORK

queue position info

"00000001"

TS 24.581 [88] clause 9.2.3.5

queue priority level

"00000000"

TS 24.581 [88] clause 9.2.3.2

Transmission Indicator

TS 24.581 [88] Table 9.2.3.11-2

Transmission Indicator

"1000000000000000"

Normal call

"0001000000000000"

Emergency call

EMERGENCY-CALL

"0000100000000000"

Imminent peril call

IMMPERIL-CALL

5.5.11.2.2 Transmission Rejected

Table 5.5.11.2.2-1: Transmission Rejected

Derivation Path: TS 24.581 [88] Table 9.2.6-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“00001”

Transmission rejected

TS 24.581 [88] clause 9.2.6 and 9.2.2.1-2

“10001”

ACK

SSRC

The SSRC of the SS

The SSRC of the Transmission Control server

IETF RFC 3550 [76]

The SSRC of the message sender

OFF-NETWORK

name

MCV1

Reject Cause

Includes the reason for the rejecting the transmission request and can be followed by a text-string explaining why the transmission request was rejected. Therefore the length of the packet will vary depending on the size of the application dependent field.

TS 24.581 [88] clause 9.2.3.4

Reject Cause

"255"

Th<Reject cause> value set to ‘255’ indicates that the transmission control server does not grant the transmission request due to the transmission control server local policy.

TS 24.581 [88] clause 9.2.6.2

Reject Cause Phrase

“Other reason”

A text string encoded the text string in the SDES item CNAME.

IETF RFC 3550 [76]

User ID

Not present

User ID

The User ID field is used in off-network only. The User ID carries the MCVideo ID of the requesting transmission participant to which the Transmission Rejected message is sent.

TS 24.581 [88] clause 9.2.3.8

OFF-NETWORK

User ID

px_MCVideo_ID_User_A

Transmission Indicator

TS 24.581 [88] clause 9.2.3.11

Transmission Indicator

"1000000000000000"

Normal call

"0001000000000000"

Emergency call

EMERGENCY-CALL

"0000100000000000"

Imminent peril call

IMMPERIL-CALL

5.5.11.2.3 Transmission Arbitration Taken

Table 5.5.11.2.3-1: Transmission Arbitration Taken

Derivation Path: TS 24.581 [88] Table 9.2.8-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“00010”

Transmission Arbitration Taken

TS 24.581 [88] clause 9.2.8 and 9.2.2.1-2

“10010”

ACK

SSRC

The SSRC of the SS

The SSRC of the Transmission Control server

IETF  RFC 3550 [76]

The SSRC of the message sender

OFF-NETWORK

name

MCV1

Granted Party’s Identity

Identifies the MCVideo user that is granted to send media.

TS 24.581 [88] clause 9.2.3.6

Granted Party’s Identity

px_MCVideo_ID_User_A

Permission to Request the Transmission

Indicates whether receiving parties are allowed to request the transmission.

TS 24.581 [88] clause9.2.3.7

Permission to Request the Transmission

"1"

Coded as follows:

0 The receiver is not permitted to request transmission.

1 The receiver is permitted to request transmission

User ID

Not Present

User ID

The User ID field is used in off-network only. The User ID carries the MCVideo ID of the transmission participant sending the Transmission Arbitration Taken message.

TS 24.581 [88] clause 9.2.3.8

OFF-NETWORK

User ID

px_MCVideo_ID_User_A

Message Sequence Number

TS 24.581 [88] clause 9.2.3.9

Message Sequence Number

The value sent in the previous Transmission Arbitration Taken message, if any, increased by 1

The <Message Sequence Number> value can be between ‘0’ and ‘65535’. When the ‘65535’ value is reached, the <Message Sequence Number> value starts from ‘0’ again.

Transmission Indicator

TS 24.581 [88] clause 9.2.3.11

Transmission Indicator

"1000000000000000"

Normal call.

"0001000000000000"

Emergency call

EMERGENCY-CALL

"0000100000000000"

Imminent peril call

IMMPERIL-CALL

SSRC of Granted Transmission Participant

SSRC of granted transmission participant:

Notation in accordance with clause 5.5.11.0.

IETF RFC 3550 [76]

5.5.11.2.4 Transmission Arbitration Release

Table 5.5.11.2.4-1: Transmission Arbitration Release

Derivation Path: TS 24.581 [88] Table 9.2.9-1

Information Element

Value/remark

Comment

Reference

Condition

Subtype

“00011”

Transmission Arbitration Release

TS 24.581 [88] clause 9.2.9 and 9.2.2.1-2

“10011”

ACK

SSRC

The SSRC of the SS

The SSRC of the Transmission Control server

IETF RFC 3550 [76]

The SSRC of the message sender

OFF-NETWORK

name

MCV1

Granted Party’s Identity

Identifies the MCVideo user that is granted to send media.

TS 24.581 [88] clause 9.2.3.6

Granted Party’s Identity

px_MCVideo_ID_User_A

User ID

Not Present

User ID

The User ID field is used in off-network only. The User ID carries the MCVideo ID of the transmission participant sending the Transmission Arbitration Release message.

TS 24.581 [88] clause 9.2.3.8

OFF-NETWORK

User ID

px_MCVideo_ID_User_A

Message Sequence Number

TS 24.581 [88] clause 9.2.3.9

Message Sequence Number

The value sent in the previous Transmission Arbitration Release message, if any, increased by 1

The <Message Sequence Number> value can be between ‘0’ and ‘65535’. When the ‘65535’ value is reached, the <Message Sequence Number> value starts from ‘0’ again.

Transmission Indicator

TS 24.581 [88] clause 9.2.3.11

Transmission Indicator

"1000000000000000"

Normal call

"0001000000000000"

Emergency call

EMERGENCY-CALL

"0000100000000000"

Imminent peril call

IMMPERIL-CALL

SSRC of Granted Transmission Participant

The SSRC of the intended recipient of the message

Notation in accordance with clause 5.5.11.0.

IETF RFC 3550 [76]

5.5.11.2.5 Transmission Revoked

Table 5.5.11.2.5-1: Transmission Revoked

Derivation Path: TS 24.581 [88] Table 9.2.10-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“00100”

Transmission Revoked

TS 24.581 [88] clause 9.2.10 and 9.2.2.1-2

“10100”

ACK

SSRC

The SSRC of the SS

The SSRC of the Transmission Control server

IETF  RFC 3550 [76]

The SSRC of the message sender

OFF-NETWORK

name

MCV1

Reject Cause

Message includes <Reject Cause> cause value in the Reject Cause field explaining why the transmission control server wants the transmission participant to stop sending media and can be followed by additional information. Therefore the length of the packet can vary depending on the value of the rejection cause.

TS 24.581 [88] clause 9.2.3.4

Reject Cause Value

7

The <Reject Cause> value set to 7 indicates that the MCVideo client’s permission to send a media is being queued. No additional information is included.

TS 24.581 [88] clause 9.2.10.2

Reject Cause Phrase

"Queue the transmission"

A text string encoded the text string in the SDES item CNAME.

TS 24.581 [88] clause 9.2.10.2

Transmission Indicator

TS 24.581 [88] clause 9.2.3.11

Transmission Indicator

"1000000000000000"

Normal call

"0001000000000000"

Emergency call

EMERGENCY-CALL

"0000100000000000"

Imminent peril call

IMMPERIL-CALL

5.5.11.2.6 Queue Position Info

Table 5.5.11.2.6-1: Queue Position Info

Derivation Path: TS 24.581 [88] Table 9.2.12-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“00101”

Queue Position Info

TS 24.581 [88] clause 9.2.12 and 9.2.2.1-2

“10101”

ACK

SSRC

The SSRC of the SS

The SSRC of the Transmission Control server

IETF  RFC 3550 [76]

The SSRC of the message sender

OFF-NETWORK

name

MCV1

User ID

Not present

User ID

The User ID field is used in off-network only. The User ID field carries the MCVideo user ID of the transmission participant sending the Queue Position Info message.

TS 24.581 [88] clause 9.2.3.8

OFF-NETWORK

User ID

px_MCVideo_ID_User_A

SSRC of Queued Transmission Participant

Not present

SSRC of Queued Transmission Participant

The SSRC of the queued transmission participant

Applicable only in off-network and shall carry the SSRC of the queued transmission participant.

IETF RFC 3550 [76].

OFF-NETWORK

Queued User ID

Not present

Queued User ID

px_MCVIDEO_ID_User_B

Used in off-network only. The Queued User ID field carries the MCVideo ID of the queued transmission control participant.

TS 24.581 [88] clause 9.2.3.8

OFF-NETWORK

Queue Info

Defines the queue position and granted transmission control priority in the queue.

TS 24.581 [88] clause 9.2.3.5

Queue Position Info

"1"

value is a binary value

Queue Priority Level

"0"

value consists of 8 bit parameter giving the transmission priority. The value of the default priority is ‘0’. The default priority is sometimes referred to as normal priority.

TS 24.581 [88] clause 9.2.3.2

Track Info

Not present

The MCVideo call does not involve a non-controlling MCVideo function

TS 24.581 [88] clause 9.2.3.13

Transmission Control Indicator

TS 24.581 [88] clause 9.2.3.11

Transmission Indicator

"1000000000000000"

Normal call

"0001000000000000"

Emergency call

EMERGENCY-CALL

"0000100000000000"

Imminent peril call

IMMPERIL-CALL

5.5.11.2.7 Media Transmission Notification

Table 5.5.11.2.7-1: Media Transmission Notification

Derivation Path: TS 24.581 [88] Table 9.2.13-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“00110”

Media Transmission Notification

TS 24.581 [88] clause 9.2.13 and 9.2.2.1-2

“10110”

ACK

SSRC

The SSRC of the SS

The SSRC of the Transmission Control server

IETF  RFC 3550 [76]

The SSRC of the message sender

OFF-NETWORK

name

MCV1

User ID

User ID of the user transmitting the media

TS 24.581 [88] clause 9.2.3.8

User ID

px_MCVideo_ID_User_B

SSRC of transmitter

SSRC of the emulated client (client of user B, value arbitrarily selected by the SS)

The SSRC of transmitter field carries the SSRC of the user transmitting the media

Permission to Request the Transmission

Indicates whether receiving parties are allowed to request the transmission.

TS 24.581 [88] clause 9.2.3.7

Permission to Request the Transmission

"1"

Coded as follows:

0 The receiver is not permitted to request transmission.

1 The receiver is permitted to request transmission

Transmission Indicator

TS 24.581 [88] clause 9.2.3.11

Transmission Indicator

"1000000000000000"

Normal Call

"0001000000000000"

Emergency call

EMERGENCY-CALL

"0000100000000000"

Imminent peril call

IMMPERIL-CALL

Track Info

Not present

The MCVideo call does not involve a non-controlling MCVideo function

TS 24.581 [88] clause 9.2.3.13

Functional Alias

Not present

px_MCVideo_ID_FA_B

functional alias URI of the transmitting user

TS 24.581 [88]clause 9.2.3.21

FA

5.5.11.2.8 Receive Media Response

Table 5.5.11.2.8-1: Receive Media Response

Derivation Path: TS 24.581 [88] Table 9.2.15-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“00111”

Receive Media Response

TS 24.581 [88] clause 9.2.15 and 9.2.2.1-2

“10111”

ACK

SSRC

The SSRC of the SS

The SSRC of the Transmission Control server

IETF RFC 3550 [76],

The SSRC of the message sender

OFF-NETWORK

name

MCV1

Result

Indicates whether media reception is possible as per the request

TS 24.581 [88] clause 9.2.3.17

Result

"1"

0 – The receiver is not permitted (rejected) to receive the media transmission.

1 – The receiver is permitted (granted) to receive the media transmission.

Reject Cause

Not present

Includes the reason for the rejecting the media receive request and can be followed by a text-string explaining why the media receive request was rejected. Therefore the length of the packet will vary depending on the size of the application dependent field

SSRC of transmitter

Same value as in the corresponding Receive Media Request

The SSRC of transmitter field carries the SSRC of the user transmitting the media

Notation in accordance with clause 5.5.11.0.

IETF RFC 3550 [76]

Transmission Indicator

TS 24.581 [88] clause 9.2.3.11

Transmission Indicator

"1000000000000000"

Normal call

"0001000000000000"

Emergency call

EMERGENCY-CALL

"0000100000000000"

Imminent peril call

IMMPERIL-CALL

5.5.11.2.9 Media Reception Notification

Table 5.5.11.2.9-1: Media Reception Notification

Derivation Path: TS 24.581 [88] Table 9.2.16-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“01000”

Media Reception Notification

TS 24.581 [88] clause 9.2.16 and 9.2.2.1-2

“11000”

ACK

SSRC

The SSRC of the SS

The SSRC of the Transmission Control server

IETF RFC 3550 [76]

The SSRC of the message sender

OFF-NETWORK

name

MCV1

User ID

The User ID field is used to carry the identity of the user who is receiving the media

TS 24.581 [88] clause 9.2.3.8

User ID

px_MCVideo_ID_User_B

Functional Alias

Not present

px_MCVideo_ID_FA_B

functional alias URI of the transmitting user

TS 24.581 [88] clause 9.2.3.21

FA

5.5.11.2.10 Void
5.5.11.2.11 Transmission Cancel Request Notify

Table 5.5.11.2.11-1: Transmission Cancel Request Notify

Derivation Path: TS 24.581 [88] Table 9.2.19-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“01010”

Transmission Cancel Request Notify

TS 24.581 [88] clause 9.2.19 and 9.2.2.1-2

“11010”

ACK

SSRC

The SSRC of the SS

The SSRC of the Transmission Control server

IETF RFC 3550 [76].

The SSRC of the message sender

The SSRC of the transmission arbitrator

OFF-NETWORK

name

MCV1

Transmission Control messages sent by the transmission control server and transmission control participant

5.5.11.2.12 Remote Transmission Response

Table 5.5.11.2.12-1: Remote Transmission Response

Derivation Path: TS 24.581 [88] Table 9.2.23-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“01011”

Remote Transmission Response

TS 24.581 [88] clause 9.2.23 and 9.2.2.1-2

“11011”

ACK

SSRC

The SSRC of the SS

The SSRC of the Transmission Control server

IETF RFC 3550 [76].

The SSRC of the message sender

OFF-NETWORK

name

MCV1

5.5.11.2.13 Remote Transmission Cancel Response

Table 5.5.11.2.13-1: Remote Transmission Cancel Response

Derivation Path: TS 24.581 [88] Table 9.2.25-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“01100”

Remote Transmission Cancel Response

TS 24.581 [88] clause 9.2.25 and 9.2.2.1-2

“11100”

ACK

SSRC

SSRC of the transmission participant requesting the reception of the media from another user

IETF RFC 3550 [76].

name

MCV1

5.5.11.2.14 Media Reception Override Notification

Table 5.5.11.2.14-1: Media Reception Override Notification

Derivation Path: TS 24.581 [88] Table 9.2.28-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“01101”

Media Reception Override Notification

TS 24.581 [88] clause 9.2.28 and 9.2.2.1-2

“11101”

ACK

SSRC

The SSRC of the SS

Editor’s note: TS 24.581 specifies "SSRC of the transmission participant requesting the reception of the media from another user"

IETF RFC 3550 [76].

The SSRC of the message sender

OFF-NETWORK

name

MCV1

User ID

Carries the identity of the user who is requesting the reception of the media.

TS 24.581 [88] clause 9.2.3.8

User ID

px_MCVideo_ID_User_A

SSRC of transmitter

The SSRC of the user transmitting the media

The SSRC of transmitter field carries the SSRC of the user transmitting the media

Notation in accordance with clause 5.5.11.0.

IETF RFC 3550 [76].

Overriding ID

Carries the identity of the user of the overriding media.

TS 24.581 [88] clause 9.2.3.8

User ID

px_MCVideo_ID_User_B

Overridden ID

Carries the identity of the user of the overridden media.

TS 24.581 [88] clause 9.2.3.8

User ID

px_MCVideo_ID_User_A

5.5.11.2.15 Transmission End Notify

Table 5.5.11.2.15-1: Transmission End Notify

Derivation Path: TS 24.581 [88] Table 9.2.29-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“01110”

Transmission End Notify

TS 24.581 [88] clause 9.2.29 and 9.2.2.1-2

“11110”

ACK

SSRC

The SSRC of the SS

The SSRC of the transmission control server.

IETF RFC 3550 [76].

The SSRC of the message sender

OFF-NETWORK

name

MCV1

User ID

Carries the identity of the user whose media transmission has been released

TS 24.581 [88] clause 9.2.3.8

User ID

px_MCVideo_ID_User_A

SSRC of transmitter

The SSRC of the user transmitting the media

The SSRC of transmitter field carries the SSRC of the user transmitting the media

Notation in accordance with clause 5.5.11.0

IETF RFC 3550 [76].

5.5.11.2.16 Transmission Idle

Table 5.5.11.2.16-1: Transmission Idle

Derivation Path: TS 24.581 [88] Table 9.2.30-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“01111”

TS 24.581 [88] clause 9.2.2.1-2

SSRC

The SSRC of the SS

The SSRC of the Transmission Control server

IETF RFC 3550 [76].

The SSRC of the message sender

The SSRC of the transmission arbitrator.

OFF-NETWORK

name

“MCV1”

Transmission Control messages sent by the Transmission Control Server and the Transmission Control Participant.

Message Sequence Number

Message Sequence Number

The value sent in the previous Transmission Idle message, if any, increased with 1

value is a binary value. The <Message Sequence Number> value can be between ‘0’ and ‘65535’. When the ‘65535’ value is reached, the <Message Sequence Number> value starts from ‘0’ again

Transmission Indicator

TS 24.581 [88] clause 9.2.3.11

Transmission Indicator

"1000000000000000"

Normal call

"0001000000000000"

Emergency call

EMERGENCY-CALL

"0000100000000000"

Imminent peril call

IMMPERIL-CALL

5.5.11.3 Transmission control specific messages sent by both the transmission control server and transmission control participant

5.5.11.3.1 Transmission End Request

Table 5.5.11.3.1-1: Transmission End Request

Derivation Path: TS 24.581 [88] Table 9.2.20-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“00000”

Transmission End Request

TS 24.581 [88] clause 9.2.20 and 9.2.2.1-3

“10000”

ACK

SSRC

The SSRC of the SS

The SSRC of the Transmission Control server for on-network and transmission arbitrator for off-network.

IETF RFC 3550 [76].

DOWNLINK

The SSRC of the UE

The SSRC of transmission control participant

UPLINK

name

MCV2

User ID

The User ID field is used to carry the identity of the user whose media transmission is requested to be terminated.

User ID

px_MCVideo_ID_User_A

Reject Cause

Includes the reason explaining why the transmission control server wants the transmission participant to stop sending media

TS 24.581 [88] clause 9.2.3.4

DOWNLINK

Reject Cause Value

8

Reject Cause Phrase

"No receiving participant"

Reject Cause

not present

UPLINK

5.5.11.3.2 Transmission End Response

Table 5.5.11.3.2-1: Transmission End Response

Derivation Path: TS 24.581 [88] Table 9.2.21-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“00001”

Transmission End Response

TS 24.581 [88] clause 9.2.21 and 9.2.2.1-3

“10001”

ACK

SSRC

The SSRC of the SS

The SSRC of the Transmission Control server for on-network and transmission arbitrator for off-network.

IETF RFC 3550 [76].

DOWNLINK

The SSRC of the UE

UPLINK

name

MCV2

User ID

The User ID field is used to carry the identity of the user whose media transmission is requested to be terminated.

User ID

px_MCVideo_ID_User_A

5.5.11.3.3 Media Reception End Request

Table 5.5.11.3.3-1: Media Reception End Request

Derivation Path: TS 24.581 [88] Table 9.2.26-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“00010”

Media Reception End Request

TS 24.581 [88] clause 9.2.26 and 9.2.2.1-3

“10010”

ACK

SSRC

The SSRC of the SS

The SSRC of the transmission control server

IETF RFC 3550 [76]

DOWNLINK

The SSRC of the UE

The SSRC of the transmission control participant

UPLINK

name

MCV2

SSRC of transmitter

The SSRC of the user transmitting the media as provided in Media transmission notification message sent to the UE

The SSRC of transmitter field carries the SSRC of the user transmitting the media

IETF RFC 3550 [76]

Transmission Indicator

TS 24.581 [88] clause 9.2.3.11

Transmission Indicator

"1000000000000000"

Normal call

"0001000000000000"

Emergency call

EMERGENCY-CALL

"0000100000000000"

Imminent peril call

IMMPERIL-CALL

5.5.11.3.4 Media Reception End Response

Table 5.5.11.3.4-1: Media Reception End Response

Derivation Path: TS 24.581 [88] Table 9.2.27-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“00011”

Media Reception End Response

TS 24.581 [88] clause 9.2.27 and 9.2.2.1-3

“10011”

ACK

SSRC

The SSRC of the SS

The SSRC of the transmission control server

IETF RFC 3550 [76]

DOWNLINK

The SSRC of the UE

The SSRC of the transmission control participant

UPLINK

name

MCV2

SSRC of transmitter

The SSRC of the user transmitting the media (same value as in the corresponding Media Reception End Request)

The SSRC of transmitter field carries the SSRC of the user transmitting the media

IETF RFC 3550 [76]

5.5.11.3.5 Transmission Control Ack

Table 5.5.11.3.5-1: Transmission Control Ack

Derivation Path: TS 24.581 [88] Table 9.2.31-1

Information Element

Value/remark

Comment

Reference

Condition

RTCP

Subtype

“00100”

Transmission Control Ack

TS 24.581 [88] clause 9.2.31 and 9.2.2.1-3

SSRC

The SSRC of the SS

The SSRC of the Transmission Control server for on-network and transmission arbitrator for off-network.

IETF RFC 3550 [76]

DOWNLINK

The SSRC of the UE

The SSRC of the transmission control participant

UPLINK

name

MCV2

Source

TS 24.581 [88] clause 9.2.3.12

Source

"2"

the controlling MCVideo function is the sender of the message

DOWNLINK

“0”

the transmission participant is the sender of the message

UPLINK

Message name

TS 24.581 [88] clause 9.2.3.18

Message Name

Message Name of the transmission control messages which requested the acknowledgement

value is as coded as an ascii name field of the RTCP APP packet containing the message to be acknowledged

Message type

TS 24.581 [88] clause 9.2.3.10

Message Type

’0001xxxx’ with ‘xxxx’ being the lower four bits of the subtype of the message to be acknowledged

Message Type of the transmission control messages which requested the acknowledgement