CN101925033A - Method and system for realizing MSRP (Message Session Relay Protocol) parameter negotiation in transmission of large message mode CPM (Converged IP Messaging) - Google Patents
Method and system for realizing MSRP (Message Session Relay Protocol) parameter negotiation in transmission of large message mode CPM (Converged IP Messaging) Download PDFInfo
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Abstract
The invention provides a method and a system for realizing MSRP (Message Session Relay Protocol) parameter negotiation in transmission of a large message mode converged IP messaging (CPM). In the process of transmitting the large message mode CPM to a group, each function entity participating in the transmission of the large message mode CPM acquires MSRP connection parameters of the adjacent function entities which establish links with each function entity through the MSRP connection parameters carried by a session description protocol (SDP) message in a session invitation message and/or the MSRP connection parameters carried by the SDP message in a successful response message to complete the media negotiation process in the transmission of the large message mode CPM, thereby completely realizing the sending of the large message mode CPM.
Description
Technical Field
The present invention relates to a method and system for implementing global resource identifier (URI) parameter negotiation required for multi-hop transmission of a Message Session Relay Protocol (MSRP) in a media negotiation for transmitting a large message mode Converged IP message (CPM) to a group.
Background
In order to implement interworking of multiple message services, provide a unified message service, and perfect, consistent and convenient message service experience, Open Mobile Alliance (OMA) proposed CPM in 2005. The CPM integrates various existing message services, including Instant Messaging (IM), Push-To-Talk over Cellular (POC), Mobile Email (MEM), Short Messaging Service (SMS), Multimedia Messaging Service (MMS), and the like.
Currently, the main business forms of CPM include: paging-mode (page-mode) based CPM messages, session-mode (session-mode) based Large Message mode CPM messages (Large Message ModeCPM messages), and session (session) based other CPM session services. Before the user normally uses these services, the user needs to register and log on to the CPM system, so-called "online".
A CPM Client (CPM Client) and a CPM engine (CPMEnabler) of a transceiver in the CPM system use Session Initiation Protocol (SIP) messages to transfer page-mode messages. The CPM service supports a preset Group (CPM Pre-defined Group) and a temporary Group (CPMAd-hoc Group), a CPM user may send a CPM paging Message to a certain temporary Group or preset Group, but when the size of the CPM paging Message exceeds a certain limit, the CPM paging Message cannot be carried by using an SIP Message. When the sender terminal needs to send a large Message mode CPM Message, if the size of the Message exceeds the limit, e.g. is larger than 1300 bytes, it cannot be carried with SIP Message either.
The large message mode CPM messaging path is divided into a signaling path along which signaling is transmitted and a media path along which media is transmitted. When sending a large Message mode CPM Message, firstly establishing a Session between a sender CPM client and a receiver CPM client by using a Session invitation Message (INVITE) of the large Message mode CPM Message, then completing media negotiation, establishing a transmission link between the sender CPM client and the receiver CPM client, and finally transmitting the media content of the large Message mode CPM Message, namely the content of the CPM Message, to the receiver CPM client by using a Message Session Relay Protocol (MSRP) through the established transmission link.
According to the CPM system framework of the current specification, in the service level, entities that a signaling path for transmitting a large message mode CPM message to a group may need to pass include a sender CPM client, a source end participating function entity to which the sender belongs, a control function entity, a destination end participating function entity to which a receiver belongs, and a receiver CPM client. The CPM media path has two schemes, one is to establish the media path between end to end without passing through a participation functional entity and a control functional entity; another solution is to pass through the participating functional entities and/or the controlling functional entities.
The CPM specification favors schemes where the media plane passes through intermediate entities, such as participating functional entities, controlling functional entities, and the like. In this way, the establishment of the media link needs to be respectively established between the CPM sender client and the source participation functional entity, between the source participation functional entity and the control functional entity, between the control functional entity and each destination participation functional entity, and between each destination participation functional entity and each receiver client, that is, the multi-hop (Multiple Hops) transmission of the MSRP is established. Currently, in the CPM message in the large message mode, how to implement MSRP parameters, i.e., how to negotiate MSRP connection parameters (the connection parameters are IP addresses, port numbers, and/or URI parameters), in the media negotiation has not been given a specific implementation scheme, that is, how to participate in the media negotiation process by the control functional entity and how to obtain the MSRP connection parameters of the adjacent functional entities with which a link is to be established by each functional entity in the negotiation process are not given.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a method for implementing MSRP parameter negotiation in a CPM message in a large message mode, which enables each functional entity to obtain MSRP connection parameters of an entity with which a link is to be established, thereby completely implementing sending of the CPM message in the large message mode.
Another objective of the present invention is to provide a system for implementing MSRP parameter negotiation in a CPM message in a large message mode, which enables each functional entity to obtain MSRP connection parameters of an entity with which a link is to be established, thereby completely implementing sending of the CPM message in the large message mode.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for realizing MSRP parameter negotiation in large message mode CPM transmission, in the process of transmitting large message mode converged IP message CPM message to a group, the method comprises:
carrying MSRP global resource identifier URI parameters required by multi-hop transmission of a message session relay protocol in a Session Description Protocol (SDP) message in a session invitation message, and/or carrying MSRP connection parameters in an SDP message in a successful response message;
and each functional entity participating in the transmission of the large message mode CPM message obtains the MSRP connection parameters of the adjacent functional entities with which the link is established through the received session invitation message and/or the successful response message.
The functional entities participating in the transmission of the large message mode CPM message comprise a CPM sender client, a source end participation functional entity, a control functional entity, destination end participation functional entities to which members in the group belong, and CPM receiver clients in the group.
The step of obtaining the MSRP connection parameters of the adjacent functional entities with which the functional entities establish the links comprises the following steps:
the sender CPM client, the source end participate in the MSRP connection parameter negotiation between the functional entity and the control functional entity; and the number of the first and second groups,
the control function entity, each destination end participate in MSRP connection parameter negotiation between the function entity and each receiver CMP client.
The negotiation of the MSRP connection parameters among the sender CPM client, the source end participation functional entity and the control functional entity comprises the following steps:
the source end participation functional entity obtains MSRP connection parameters of the CPM client of the sender by receiving a session invitation message from the CPM client of the sender; the control function entity obtains the MSRP connection parameters of the source end participation function entity or the MSRP connection parameters of the source end participation function entity and the sender CPM client by receiving the session invitation message from the source end participation function entity;
and/or the source end participation functional entity obtains the MSRP connection parameters of the control functional entity by receiving a successful response message from the control functional entity; and the sender CPM client acquires the MSRP connection parameters of the source end participation functional entity or the MSRP connection parameters of the source end participation functional entity and the control functional entity by receiving a successful response message from the source end participation functional entity.
The method for the control function entity to send the successful response message to the source end participation function entity comprises the following steps:
after receiving the session invitation message from the source end participation functional entity, the control functional entity immediately returns a success response message to the source end participation functional entity; or,
and the control functional entity sends a successful response message to the source end participation functional entity after receiving the successful response message from the receiver.
The successful response message received by the control function entity from the receiving party is the first successful response message in the group.
For each destination participation functional entity and receiver CMP client in the group, the negotiation of MSRP connection parameters among the control functional entity, the destination participation functional entity, and the receiver CMP client includes:
the destination participating functional entity receives a successful response message from the CPM client of the receiving party to obtain MSRP connection parameters of the CPM client of the receiving party; the control functional entity obtains the MSRP connection parameters of the destination end participation functional entity or the MSRP connection parameters of the destination end participation functional entity and the receiver CPM client by receiving a success message from the destination end participation functional entity;
and/or the destination participation functional entity obtains the MSRP connection parameters of the control functional entity by receiving the session invitation message from the control functional entity; and the CPM client of the receiver acquires the MSRP connection parameters of the target end participation functional entity or the MSRP connection parameters of the target end participation functional entity and the control functional entity by receiving the session invitation message from the target end participation functional entity.
The group is a preset group or a temporary group.
A method for realizing MSRP parameter negotiation in large message mode CPM transmission, in the process of transmitting large message mode converged IP message CPM message to a group, the method comprises:
carrying MSRP global resource identifier URI parameters required by multi-hop transmission of a message session relay protocol in a Session Description Protocol (SDP) message in a session invitation message;
each functional entity participating in the transmission of the large message mode CPM message obtains the MSRP connection parameters of the adjacent functional entities establishing links with the functional entities through the received session invitation message.
A method for realizing MSRP parameter negotiation in large message mode CPM transmission, in the process of transmitting large message mode converged IP message CPM message to a group, the method comprises:
carrying MSRP global resource identifier URI parameters required by multi-hop transmission of a message session relay protocol in an SDP message in a successful response message;
and each functional entity participating in the transmission of the large message mode CPM message obtains the MSRP connection parameters of the adjacent functional entities establishing the link with the functional entity through the received successful response message.
A method for realizing MSRP parameter negotiation in large message mode CPM transmission, in the process of transmitting large message mode converged IP message CPM message to a group, the method comprises:
carrying MSRP global resource identifier URI parameters required by multi-hop transmission of a message session relay protocol in a Session Description Protocol (SDP) message in a session invitation message and an SDP message in a successful response message;
and each functional entity participating in the transmission of the large message mode CPM message obtains the MSRP connection parameters of the adjacent functional entities establishing the link with the functional entity through the received session invitation message and the successful response message.
A system for realizing MSRP parameter negotiation in a CPM (messaging and message protocol) transmission large message mode is disclosed, wherein each functional entity participating in the CPM transmission large message mode is used for obtaining MSRP global resource identifier (URI) parameters required by multi-hop transmission of message session relay protocol of adjacent functional entities establishing links with the functional entities through received session invitation messages and/or successful response messages;
the session description protocol SDP message in the session invitation message carries MSRP connection parameters, and/or the SDP message in the successful response message carries MSRP connection parameters.
The functional entities participating in the transmission of the large message mode CPM message comprise a CPM sender client, a source end participation functional entity, a control functional entity, destination end participation functional entities to which members in the group belong, and CPM receiver clients in the group.
It can be seen from the above technical solutions that, in the process of transmitting the large message mode CPM message to the group, each functional entity participating in transmitting the large message mode CPM message obtains the MSRP connection parameters of the adjacent functional entity with which the link is established through the MSRP connection parameters carried by the Session Description Protocol (SDP) message in the session invitation message and/or the MSRP connection parameters carried by the SDP message in the successful response message, so that the media negotiation process in transmitting the large message mode CPM message is completed, thereby completely implementing the transmission of the large message mode CPM message.
Drawings
FIG. 1 is a flowchart of a method for implementing negotiation of MSRP parameters in a CPM message in a large message mode according to the present invention;
FIG. 2 is a flowchart of a first embodiment of implementing negotiation of MSRP parameters in transmitting a large message mode CPM message according to the present invention;
fig. 3 is a flowchart of a second embodiment of implementing negotiation of MSRP parameters in transmitting a large message mode CPM message according to the present invention.
Detailed Description
Fig. 1 is a flowchart of a method for implementing negotiation of MSRP parameters in a large message mode CPM message transmission according to the present invention, and as shown in fig. 1, in a process of transmitting a large message mode CPM message to a group, the method includes:
step 100: carrying MSRP connection parameters in SDP message in session invitation message, and/or carrying MSRP connection parameters in SDP message in success response message.
Step 101: and each functional entity participating in the transmission of the large message mode CPM message obtains the MSRP connection parameters of the adjacent functional entities with which the link is established through the received session invitation message and/or the successful response message.
In the present invention, the group may be a predetermined group or a temporary group.
Each functional entity participating in transmitting the large message mode CPM message comprises a CPM sender client, a source end participation functional entity, a control functional entity, each destination end participation functional entity to which each member in the group belongs, and each CPM receiver client in the group.
The step of obtaining the MSRP connection parameters of the adjacent functional entities with which the link is established by each functional entity specifically includes: a sender CPM client, a source end participation functional entity and a control functional entity negotiate MSRP connection parameters; and controlling the functional entity, and each destination end in the group to participate in MSRP connection parameter negotiation between the functional entity and each receiver CMP client.
The negotiation of the MSRP connection parameters between the sender CPM client, the source end participation functional entity and the control functional entity comprises the following steps:
a source end participation functional entity obtains MSRP connection parameters of a CPM client of a sender by receiving a session invitation message from the CPM client of the sender; the control function entity obtains the MSRP connection parameters of the source end participation function entity or the MSRP connection parameters of the source end participation function entity and the sender CPM client by receiving the session invitation message from the source end participation function entity;
and/or the source end participation functional entity obtains the MSRP connection parameters of the control functional entity by receiving the successful response message from the control functional entity; and the sender CPM client acquires the MSRP connection parameters of the source end participation functional entity or the MSRP connection parameters of the source end participation functional entity and the control functional entity by receiving the successful response message from the source end participation functional entity.
The method for controlling the functional entity to send the successful response message to the source end participation functional entity comprises the following steps: after receiving the session invitation message from the source end participation functional entity, the control functional entity immediately returns a successful response message (namely, the successful response of the receiver does not need to be waited for) to the source end participation functional entity; or, after receiving a successful response message from a receiver (as long as one receiver returns a successful response), the control functional entity sends a successful response message to the source end participating functional entity.
For each destination participation functional entity and the receiver CPM client, the MSRP connection parameter negotiation among the control functional entity, the destination participation functional entity and the receiver CPM client comprises the following steps:
the destination participating functional entity receives a successful response message from the CPM client of the receiving party to obtain MSRP connection parameters of the CPM client of the receiving party; the control functional entity obtains the MSRP connection parameters of the target end participation functional entity or the MSRP connection parameters of the target end participation functional entity and the receiver CPM client by receiving the success message from the target end participation functional entity;
and/or the target end participation functional entity obtains the MSRP connection parameter of the control functional entity by receiving the session invitation message from the control functional entity; and the CPM client of the receiving party obtains the MSRP connection parameters of the target end participation functional entity or the MSRP connection parameters of the target end participation functional entity and the control functional entity by receiving the session invitation message from the target end participation functional entity.
In the above embodiment, the MSRP connection parameter may be an IP address, a port number, and/or an MSRP URI parameter.
Corresponding to the method of the invention, the invention also provides a system for realizing MSRP parameter negotiation in the transmission of the large message mode CPM message, each functional entity participating in the transmission of the large message mode CPM message is used for obtaining the MSRP connection parameters required by the multi-hop transmission of the message session relay protocol of the adjacent functional entity establishing the link with the functional entity through the received session invitation message and/or the successful response message;
the session description protocol SDP message in the session invitation message carries MSRP connection parameters, and/or the SDP message in the successful response message carries MSRP connection parameters.
The functional entities participating in the transmission of the large message mode CPM message comprise a CPM sender client, a source end participation functional entity, a control functional entity, destination end participation functional entities to which members in the group belong, and CPM receiver clients in the group.
The process of the present invention is described in detail below with reference to two examples. In the embodiment, a sender CPM Client is denoted as CPM Client a, and a source participating functional entity (Originating participating function), namely a sender home participating functional entity, is denoted as a participating functional entity a; a CPM Client of a receiving party is marked as CPM Client B, and a destination participating functional entity (Terminating participating function), namely a receiving party attribution participating functional entity, is marked as a participating functional entity B; the control Function entity (Controlling Function) is denoted as control Function entity X. In addition, for convenience of description, the SIP/IP Core network (Core) functional node is omitted in fig. 2 and 3, and those skilled in the art know that signaling transmission between each two functional entities is routed through the SIP/IP Core network.
Fig. 2 is a flowchart of a first embodiment of implementing MSRP parameter negotiation in a CPM message in a large message mode according to the present invention, and as shown in fig. 2, in the first embodiment, it is assumed that a control function entity immediately returns a successful response message to a source end participating function entity after receiving a session invitation message from the source end participating function entity, and the method includes the following steps:
step 200: the CPM Client A sends SIP session invitation message (INVITE)1 of the large message mode CPM message to a certain group, the session invitation message carries an SDP01 message, and the content of the SDP01 message contains MSRP connection parameters of the CPM Client A. The SIP invite is routed to the participating functional entity a via the SIP/IP core network.
Wherein, the MSRP connection parameter can be a URI parameter; or an IP address and port number; or URI parameters, IP addresses and port numbers
For carrying the MSRP URI parameter, in SIP INVITE1, the MSRP URI parameter included in the path header information in the SDP01 message is as follows: a path: msrps:// A.example.com/aaaaaa; tcp.
Step 201: the participating functional entity a receives SIP INVITE1 message, and processes the received SIP INVITE1 message as a Back-to-Back User Agent (B2 BUA): and generating and sending a new SIP INVITE2, SIP INVITE2 message carrying SDP02, wherein the participating functional entity A carries the MSRP connection parameters of the participating functional entity A through the SDP02 message. SIP INVITE2 is routed through the SIP/IP core network to control function entity X.
The SDP02 message may be added with the MSRP connection parameters of the participating functional entity a on the basis of retaining the path header field value (i.e., the MSRP connection parameters of the CPMClientA) in the originally received SDP, or may only carry the MSRP connection parameters of the participating functional entity a itself.
Wherein, the MSRP connection parameter can be a URI parameter; or an IP address and port number; or URI parameters, IP addresses and port numbers
For carrying the MSRP URI parameter, in SIP INVITE2, the MSRP URI parameter included in the path header information in the SDP02 message is as follows: a path: msrps:// pfa. example. com/pfapfa; tcp.
Or,
a＝path:msrps://PFA.example.com/pfapfa；tcp，
a＝path:msrps://A.example.com/aaaaaa；tcp。
step 202a 1-step 202 b: control function entity X receives the SIP INVITE2 message, processes the received SIP INVITE2 as B2 BUA: on one hand, a SIP200OK message is generated and returned to the participating functional entity a, the response message carries a response SDP07 message, and the SDP07 message carries the MSRP connection parameters of the controlling functional entity X itself (as in step 202 a); on the other hand, each receiver in the group sends a new SIP INVITE, the message carries an SDP message, the control functional entity X carries its own MSRP connection parameters via the SDP message, and the new SIP INVITE is routed to the participating functional entity to which each receiver belongs via the SIP/IP core network. For convenience of description, a receiving party is taken as an example and is denoted as a participating functional entity B for explanation (as in step 202B), as follows:
the control functional entity X sends SIP INVITE3 to the participating functional entity B, carrying SDP03 message in SIP INVITE3, and the control functional entity X carries its own MSRP connection parameters through the SDP03 message.
Wherein, the MSRP connection parameter can be a URI parameter; or an IP address and port number; or URI parameters, IP addresses and port numbers
For carrying the MSRP URI parameter, the MSRP URI parameter contained in the path header information in the SDP03 message is as follows:
a＝path:msrps://CFX.example.com/cfxcfx；tcp。
step 202a 2: the participating functional entity A receives the SIP200OK message from the control functional entity X, and processes the received message as a B2 BUA: and generating and sending a new SIP200OK message, wherein the message carries an SDP08 message, and the participating functional entity A carries the MSRP connection parameters of the participating functional entity A through the SDP08 message. And routing the SIP200OK to the CPM Client A through the SIP/IP core network. After receiving the SIP200OK message from the participating functional entity A, the CPM ClientA completes the MSRP connection negotiation among the control functional entity X, the participating functional entity A and the CPM client of the sender.
The SDP08 message may be added with the MSRP connection parameters of the participating functional entity a on the basis of retaining the path header field value (i.e., the MSRP connection parameters of the control functional entity X) in the originally received SDP, or may only carry the MSRP connection parameters of the participating functional entity a itself.
Wherein, the MSRP connection parameter can be a URI parameter; or an IP address and port number; or URI parameters, IP addresses and port numbers
For the carrying of the MSRP URI parameter, in the SIP200OK message, the MSRP URI parameter contained in the path header information in the SDP08 message is as follows: a path: msrps:// pfa. example. com/pfbpb; tcp.
Or,
a＝path:msrps://PFA.example.com/pfbpfb；tcp，
a＝path:msrps://CFX.example.com/cfxcfx；tcp。
step 203: the participating functional entity B receives SIP INVITE3 the message, and processes the received message as a B2 BUA: and generating and sending a new SIP INVITE4, SIP INVITE4 message carrying SDP04, wherein the participating functional entity B carries the MSRP connection parameters of the participating functional entity B through the SDP04 message. SIP INVITE4 is routed to CPM Client B through the SIP/IP core network.
The SDP04 message may be added with the MSRP connection parameters of the participating functional entity B on the basis of retaining the path header field value (i.e., the MSRP connection parameters of the control functional entity X) in the originally received SDP, or may only carry the MSRP connection parameters of the participating functional entity B itself.
Wherein, the MSRP connection parameter can be a URI parameter; or an IP address and port number; or URI parameters, IP addresses and port numbers
For carrying the MSRP URI parameter, in SIP INVITE4, the MSRP URI parameter included in the path header information in the SDP04 message is as follows: a path: msrps:// PFB.example.com/pfbpb; tcp.
Or,
a＝path:msrps://PFB.example.com/pfbpfb；tcp，
a＝path:msrps://CFX.example.com/cfxcfx；tcp。
step 204: and the CPM Client B receives the SIP INVITE4 message and returns an SIP success response message (200OK) to the participating functional entity B, wherein the SIP200OK message carries a response SDP05 message, and the CPM Client B carries own MSRP (message service provider protocol) connection parameters through the SDP05 message. The SIP200OK message is routed to the participating functional entity B via the SIP/IP core network.
Wherein, the MSRP connection parameter can be a URI parameter; or an IP address and port number; or URI parameters, IP addresses and port numbers
The MSRP URI parameters contained in the path header information in the SDP05 message are exemplified as follows:
a＝path:msrps://B.example.com/bbbbbb；tcp.
step 205: the participating functional entity B receives the SIP200OK message from the CPM Client B, and processes the received SIP200OK message as a B2 BUA: and generating and sending a new SIP200OK message, wherein the SIP200OK message carries an SDP06 message, and the participating functional entity B carries the MSRP connection parameters of the participating functional entity B through the SDP06 message. The SIP200OK message is routed to the control function entity X via the SIP/IP core network. After receiving the SIP200OK message from the participating functional entity B, the controlling functional entity X completes the MSRP connection parameter negotiation among the controlling functional entity X, the participating functional entity B, and the receiver CPM client for one member of the group.
The SDP06 message may be added with the MSRP connection parameter of the participating functional entity B on the basis of retaining the path header field value (i.e., the MSRP connection parameter of the CPMClient B) in the originally received SDP, or may only carry the MSRP connection parameter of the participating functional entity B itself.
Wherein, the MSRP connection parameter can be a URI parameter; or an IP address and port number; or URI parameters, IP addresses and port numbers
For carrying the MSRP URI parameter, the MSRP URI parameter contained in the path header information in the SDP06 message is as follows:
a＝path:msrps://PFB.example.com/pfbpfb；tcp。
or:
a＝path:msrps://PFB.example.com/pfbpfb；tcp，
msrps://B.example.com/bbbbbb；tcp。
fig. 3 is a flowchart of a second embodiment of implementing negotiation of MSRP parameters in transmission of a large message mode CPM message according to the present invention, as shown in fig. 3, in the second embodiment, it is assumed that a control function entity sends a success response message (e.g. a first response) to an originating participating function entity after receiving a success response message (e.g. a first response) from a receiving party.
The second embodiment is different from the first embodiment in that after the control functional entity X receives the SIP INVITE2 message from the participating functional entity a (step 301 in fig. 3), it does not immediately return a SIP200OK message to the CPM Client a; instead, after the control function entity X receives the SIP200OK message from the participating function entity B (step 305 in fig. 3), it processes the received message as a B2 BUA: and generating a new SIP200OK message, and sending the new SIP200OK message to the participating functional entity A, wherein the SIP200OK message carries a response SDP07 message, and the SDP07 message carries the MSRP connection parameters of the controlling functional entity X. The SIP200OK message is routed through the SIP/IP core network to participating functional entity a (step 306 in fig. 3).
Both the first embodiment and the second embodiment use the session invitation message and the successful response message to carry the MSRP connection parameters in both directions for negotiation, or use the session invitation message or the successful response message to carry the MSRP connection parameters in one direction for negotiation, and detailed description is omitted here for specific implementation.
In the above embodiment, the specific MSRP connection parameter is described by taking the carrying of MSRP URI as an example, the IP address may be carried by the connection parameter line c-of SDP, and the port number may be carried by the media parameter line m-field.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (16)
1. A method for realizing MSRP parameter negotiation in large message mode CPM transmission is characterized in that in the process of transmitting large message mode converged IP message CPM message to a group, the method comprises the following steps:
carrying MSRP connection parameters required by multi-hop transmission of a message session relay protocol in a Session Description Protocol (SDP) message in the session invitation message, and/or carrying MSRP connection parameters in an SDP message in a successful response message;
and each functional entity participating in the transmission of the large message mode CPM message obtains the MSRP connection parameters of the adjacent functional entities with which the link is established through the received session invitation message and/or the successful response message.
2. The method of claim 1, wherein the functional entities participating in the transmission of the large message mode CPM message comprise a CPM sender client, a source end participating functional entity, a control functional entity, destination end participating functional entities belonging to members of the group, and CPM receiver clients of the group.
3. The method of claim 2, wherein the obtaining of the MSRP connection parameters of the neighboring functional entities with which the functional entities establish the link comprises:
the sender CPM client, the source end participate in the MSRP connection parameter negotiation between the functional entity and the control functional entity; and the number of the first and second groups,
the control function entity, each destination end participate in MSRP connection parameter negotiation between the function entity and each receiver CMP client.
4. The method of claim 3, wherein the negotiating of the MSRP connection parameters between the sender CPM client, the source end participating function entity and the control function entity comprises:
the source end participation functional entity obtains MSRP connection parameters of the CPM client of the sender by receiving a session invitation message from the CPM client of the sender; the control function entity obtains the MSRP connection parameters of the source end participation function entity or the MSRP connection parameters of the source end participation function entity and the sender CPM client by receiving the session invitation message from the source end participation function entity;
and/or the source end participation functional entity obtains the MSRP connection parameters of the control functional entity by receiving a successful response message from the control functional entity; and the sender CPM client acquires the MSRP connection parameters of the source end participation functional entity or the MSRP connection parameters of the source end participation functional entity and the control functional entity by receiving a successful response message from the source end participation functional entity.
5. The method of claim 4, wherein the method for the controlling functional entity to issue the success response message to the source participating functional entity comprises:
after receiving the session invitation message from the source end participation functional entity, the control functional entity immediately returns a success response message to the source end participation functional entity; or,
and the control functional entity sends a successful response message to the source end participation functional entity after receiving the successful response message from the receiver.
6. The method of claim 5, wherein the successful response message received by the control function entity from the receiving party is the first successful response message in the group.
7. The method according to claim 3, wherein for each destination participation functional entity and recipient CMP client in the group, the MSRP connection parameter negotiation between the control functional entity, destination participation functional entity and recipient CMP client comprises:
the destination participating functional entity receives a successful response message from the CPM client of the receiving party to obtain MSRP connection parameters of the CPM client of the receiving party; the control functional entity obtains the MSRP connection parameters of the destination end participation functional entity or the MSRP connection parameters of the destination end participation functional entity and the receiver CPM client by receiving a success message from the destination end participation functional entity;
and/or the destination participation functional entity obtains the MSRP connection parameters of the control functional entity by receiving the session invitation message from the control functional entity; and the CPM client of the receiver acquires the MSRP connection parameters of the target end participation functional entity or the MSRP connection parameters of the target end participation functional entity and the control functional entity by receiving the session invitation message from the target end participation functional entity.
8. The method of any of claims 1 to 7, wherein the MSRP connection parameters are URI parameters.
9. The method according to any of claims 1 to 7, wherein the MSRP connection parameters are an IP address and a port number.
10. The method according to any of claims 1 to 7, wherein the MSRP connection parameters are URI parameters, IP addresses and port numbers.
11. The method according to any one of claims 1 to 7, wherein the group is a predetermined group or a temporary group.
12. A method for realizing MSRP parameter negotiation in large message mode CPM transmission is characterized in that in the process of transmitting large message mode converged IP message CPM message to a group, the method comprises the following steps:
carrying MSRP connection parameters required by multi-hop transmission of a message session relay protocol in a Session Description Protocol (SDP) message in a session invitation message;
each functional entity participating in the transmission of the large message mode CPM message obtains the MSRP connection parameters of the adjacent functional entities establishing links with the functional entities through the received session invitation message.
13. A method for realizing MSRP parameter negotiation in large message mode CPM transmission is characterized in that in the process of transmitting large message mode converged IP message CPM message to a group, the method comprises the following steps:
carrying MSRP connection parameters required by multi-hop transmission of a message session relay protocol in an SDP message in the successful response message;
and each functional entity participating in the transmission of the large message mode CPM message obtains the MSRP connection parameters of the adjacent functional entities establishing the link with the functional entity through the received successful response message.
14. A method for realizing MSRP parameter negotiation in large message mode CPM transmission is characterized in that in the process of transmitting large message mode converged IP message CPM message to a group, the method comprises the following steps:
carrying MSRP connection parameters required by multi-hop transmission of a message session relay protocol in a Session Description Protocol (SDP) message in a session invitation message and an SDP message in a successful response message;
and each functional entity participating in the transmission of the large message mode CPM message obtains the MSRP connection parameters of the adjacent functional entities establishing the link with the functional entity through the received session invitation message and the successful response message.
15. A system for realizing MSRP parameter negotiation in transmission large message mode CPM is characterized in that each functional entity participating in transmission of large message mode CPM message is used for obtaining MSRP connection parameters required by message session relay protocol multi-hop transmission of adjacent functional entities establishing link with the functional entities through received session invitation message and/or successful response message;
the session description protocol SDP message in the session invitation message carries MSRP connection parameters, and/or the SDP message in the successful response message carries MSRP connection parameters.
16. The system of claim 15, wherein the functional entities participating in the transmission of the large message mode CPM message comprise a CPM sender client, a source end participating functional entity, a control functional entity, destination end participating functional entities belonging to members of the group, and CPM receiver clients of the group.
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