CN110958581A - Method, system and related equipment for transmitting media data - Google Patents

Method, system and related equipment for transmitting media data Download PDF

Info

Publication number
CN110958581A
CN110958581A CN201911259897.9A CN201911259897A CN110958581A CN 110958581 A CN110958581 A CN 110958581A CN 201911259897 A CN201911259897 A CN 201911259897A CN 110958581 A CN110958581 A CN 110958581A
Authority
CN
China
Prior art keywords
media data
fast forwarding
terminal
port
sgw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201911259897.9A
Other languages
Chinese (zh)
Other versions
CN110958581B (en
Inventor
匡程明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hytera Communications Corp Ltd
Original Assignee
Hytera Communications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hytera Communications Corp Ltd filed Critical Hytera Communications Corp Ltd
Priority to CN201911259897.9A priority Critical patent/CN110958581B/en
Publication of CN110958581A publication Critical patent/CN110958581A/en
Application granted granted Critical
Publication of CN110958581B publication Critical patent/CN110958581B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The application discloses a method, a system and related equipment for transmitting media data, wherein in the method for transmitting the media data, a Service Gateway (SGW) receives the media data sent by a calling terminal, and the media data comprises an IP (Internet protocol) and a port of the calling terminal and an IP and a port of a target terminal; the SGW searches a pre-established fast forwarding corresponding relation, determines a called terminal as a target terminal under the condition that the pre-established fast forwarding corresponding relation comprises a target terminal IP and a port, and sends media data to the called terminal; wherein the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal. The method can realize the rapid forwarding of the media data.

Description

Method, system and related equipment for transmitting media data
Technical Field
The present application relates to the field of broadband trunking communication technologies, and in particular, to a method, a system, and a related device for transmitting media data.
Background
The broadband trunking communication service is an audio/video multimedia service, and can provide special command scheduling for group users, such as single call service and group call service among the group users.
In broadband trunking communication, a gateway on a network side receives media data sent by a calling terminal, the media data are sent to a trunking media function block (TMF) on the network side, the TMF performs relevant processing on the media data, for example, the media data are converted into a format supported by a called terminal, the media data are returned to the gateway, and then the gateway sends the media data to a corresponding called terminal.
In the communication process, when the calling terminal and the called terminal support media data in the same format, that is, the TMF does not need to convert the media data sent by the calling terminal, so that the called terminal can play the media data, the media data sent by the calling terminal still needs to pass through the gateway and the TMF, and the gateway can reach the corresponding called terminal. Therefore, for the media data without media format conversion, the current communication process is complicated, and the time for transmitting the media data to the called terminal is too long.
Disclosure of Invention
In view of the above, the present application provides a method, a system and a related device for transmitting media data.
In order to achieve the above object, the following solutions are proposed:
a method of transmitting media data, comprising:
a Service Gateway (SGW) receives media data sent by a calling terminal, wherein the media data comprises an IP (Internet protocol) and a port of the calling terminal and an IP and a port of a target terminal;
the SGW searches a pre-established fast forwarding corresponding relation, determines a called terminal as the target terminal under the condition that the pre-established fast forwarding corresponding relation comprises the target terminal IP and a port, and sends the media data to the called terminal;
wherein the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal.
The method further comprises the following steps:
and under the condition that the target end IP and the port are not included in the pre-established quick forwarding corresponding relation, determining a cluster media function block (TMF) as the target end, sending the media data to the TMF so that the TMF carries out format conversion on the media data, and sending the media data after format conversion to the called terminal.
The process of establishing the fast forwarding corresponding relationship includes:
the SGW receives a rapid forwarding corresponding relation establishment instruction sent by a mobile management entity MME;
the SGW responds to the fast forwarding correspondence establishing instruction to establish the fast forwarding correspondence, where the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal;
the fast forwarding correspondence establishing instruction is sent to the MME by the TCF under the condition that the TCF judges that a preset fast forwarding correspondence establishing condition is met;
the preset condition for establishing the fast forwarding corresponding relationship at least comprises the following steps: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal.
A method of transmitting media data, comprising:
a cluster control function (TCF) receives a call establishment request sent by a calling terminal;
the TCF judges whether a preset fast forwarding corresponding relationship establishment condition is met, wherein the preset fast forwarding corresponding relationship establishment condition at least comprises the following steps: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal;
if so, the TCF sends a fast forwarding corresponding relation establishment instruction to a Mobility Management Entity (MME), so that the MME sends the fast forwarding corresponding relation establishment instruction to the SGW and the SGW establishes the fast forwarding corresponding relation;
wherein the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal; and the fast forwarding corresponding relation is used for the SGW to search the fast forwarding corresponding relation when receiving the media data sent by the calling terminal, wherein the media data comprises the IP and the port of the calling terminal and the IP and the port of the target terminal, and the SGW determines that the called terminal is the target terminal and sends the media data to the called terminal under the condition that the fast forwarding corresponding relation comprises the IP and the port of the target terminal.
A method of transmitting media data, comprising:
a mobile management entity MME receives a fast forwarding correspondence establishment instruction sent by a cluster control function block TCF, where the fast forwarding correspondence establishment instruction is sent to the MME by the TCF when it is determined that a preset fast forwarding correspondence establishment condition is satisfied, and the preset fast forwarding correspondence establishment condition at least includes: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal;
the MME sends the fast forwarding correspondence establishing instruction to a serving gateway SGW, where the fast forwarding correspondence establishing instruction establishes the fast forwarding correspondence for the SGW, and the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal.
A method of transmitting media data, comprising:
a cluster media function block (TMF) receives media data sent by a Service Gateway (SGW), wherein the media data is sent when the SGW receives the media data of a calling terminal, a pre-established fast forwarding corresponding relation is searched, and the media data is sent under the condition that the pre-established fast forwarding corresponding relation does not contain a target terminal IP and a port;
and the TMF carries out format conversion on the media data and sends the media data after format conversion to the called terminal.
A transmission system of media data, comprising: a calling terminal, a called terminal, a cluster control function block TCF, a mobile management entity MME and a service gateway SGW;
the calling terminal is used for sending a call establishment request to the TCF;
the TCF is configured to receive the call establishment request, determine whether a preset fast forwarding correspondence establishment condition is satisfied, and if so, send a fast forwarding correspondence establishment instruction to the MME, where the preset fast forwarding correspondence establishment condition at least includes: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal;
the MME is used for receiving the fast forwarding corresponding relation establishing instruction and sending the fast forwarding corresponding relation establishing instruction to the SGW;
the SGW is configured to receive the fast forwarding correspondence establishing instruction, and respond to the fast forwarding correspondence establishing instruction to establish the fast forwarding correspondence, where the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal;
the SGW is further configured to receive media data sent by the calling terminal, where the media data includes an IP and a port of the calling terminal and an IP and a port of a target terminal, search the fast forwarding correspondence, determine that a called terminal is the target terminal when the fast forwarding correspondence includes the IP and the port of the target terminal, and send the media data to the called terminal.
The system further comprises: a cluster media function block TMF;
the SGW is further configured to determine, when the target IP and the port are not included in the pre-established fast forwarding correspondence, that a cluster media function block TMF is the target, and send the media data to the TMF;
and the TMF is used for converting the format of the media data and sending the media data after format conversion to the called terminal.
A serving gateway, SGW, comprising:
a memory for storing a program;
the processor is configured to run the program, and when the processor runs the program, the processor implements the media data transmission method corresponding to the SGW.
A cluster control function block, TCF, comprising:
a memory for storing a program;
the processor is configured to run the program, and when the processor runs the program, the processor implements the media data transmission method corresponding to the TCF.
A mobility management entity, MME, comprising:
a memory for storing a program;
the processor is configured to run the program, and when the processor runs the program, the processor implements the media data transmission method corresponding to the MME.
A group media function block, TMF, comprising:
a memory for storing a program;
the processor is configured to run the program, and when the processor runs the program, the processor implements the media data transmission method corresponding to the TMF.
A device for transmitting media data, applied to a serving gateway SGW, the device comprising:
the first receiving module is used for receiving media data sent by a calling terminal, wherein the media data comprises an IP (Internet protocol) and a port of the calling terminal and an IP and a port of a target terminal;
the first determining module is used for searching a pre-established quick forwarding corresponding relation and determining the called terminal as the target terminal under the condition that the pre-established quick forwarding corresponding relation comprises the target terminal IP and the port; wherein the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal;
and the first sending module is used for sending the media data to the called terminal.
The device further comprises:
a second determining module, configured to determine, when the target IP and the port are not included in the pre-established fast forwarding correspondence, that the cluster media function block TMF is the target;
and the second sending module is used for sending the media data to the TMF so that the TMF performs format conversion on the media data and sends the media data after format conversion to the called terminal.
The device further comprises:
a second receiving module, configured to receive a fast forwarding correspondence establishment instruction sent by a mobility management entity MME;
an establishing module, configured to respond to the fast forwarding correspondence establishing instruction, and establish the fast forwarding correspondence, where the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal;
the fast forwarding correspondence establishing instruction is sent to the MME by the TCF under the condition that the TCF judges that a preset fast forwarding correspondence establishing condition is met;
the preset condition for establishing the fast forwarding corresponding relationship at least comprises the following steps: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal.
A device for transmitting media data, which is applied to a cluster control function (TCF), the device comprising:
a third receiving module, configured to receive a call establishment request sent by a calling terminal;
a judging module, configured to judge whether a preset fast forwarding correspondence establishment condition is satisfied, where the preset fast forwarding correspondence establishment condition at least includes: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal;
a third sending module, configured to send a fast forwarding correspondence establishment instruction to a mobility management entity MME if a preset fast forwarding correspondence establishment condition is met, so that the MME sends the fast forwarding correspondence establishment instruction to the SGW, and the SGW establishes the fast forwarding correspondence;
wherein the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal; and the fast forwarding corresponding relation is used for the SGW to search the fast forwarding corresponding relation when receiving the media data sent by the calling terminal, wherein the media data comprises the IP and the port of the calling terminal and the IP and the port of the target terminal, and the SGW determines that the called terminal is the target terminal and sends the media data to the called terminal under the condition that the fast forwarding corresponding relation comprises the IP and the port of the target terminal.
An apparatus for transmitting media data, applied to a Mobility Management Entity (MME), the apparatus comprising:
a fourth receiving module, configured to receive a fast forwarding correspondence establishment instruction sent by a cluster control function block TCF, where the fast forwarding correspondence establishment instruction is sent to the MME by the TCF when it is determined that a preset fast forwarding correspondence establishment condition is met, where the preset fast forwarding correspondence establishment condition at least includes: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal;
a fourth sending module, configured to send the fast forwarding correspondence establishing instruction to a serving gateway SGW, where the fast forwarding correspondence establishing instruction establishes the fast forwarding correspondence for the SGW, and the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal.
A device for transmitting media data, which is applied to a group media function block TMF, the device comprising:
a fifth receiving module, configured to receive media data sent by a serving gateway SGW, where the media data is sent when the SGW receives the media data of a calling terminal, and searches for a pre-established fast forwarding correspondence, where the pre-established fast forwarding correspondence does not include the target IP and the port;
and the fifth sending module is used for carrying out format conversion on the media data and sending the media data after the format conversion to the called terminal.
According to the technical scheme, after receiving the media data sent by the calling terminal, the service gateway SGW searches for a pre-established fast forwarding corresponding relation, determines whether the IP and the port of the target terminal exist in the fast forwarding corresponding relation, if so, the service gateway SGW indicates that the called terminal is the target terminal, and the SGW can directly send the media data to the called terminal, so that the media data does not need to be transmitted to the TMF, namely the media data does not need to be transmitted to the TMF through the PGW, namely the media data is forwarded without passing through the PGW and the FMF, the fast forwarding of the media data is realized, the service use experience of a user is improved, and the waste of bandwidth and processing resources is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of an embodiment 1 of a method for transmitting media data according to the present application;
fig. 2 is a schematic diagram illustrating a transmission path of media data provided in the present application;
fig. 3 is a flowchart of an embodiment 2 of a method for transmitting media data according to the present application;
fig. 4 is a detailed flowchart of a media data transmission method provided in the present application;
fig. 5 is a schematic logical structure diagram of a media data transmission system provided in the present application;
fig. 6 is a schematic logical structure diagram of another media data transmission system provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the present application provides a Media data transmission method, which can be applied to a scenario of an enhanced Trunking core network, where the enhanced Trunking core network relates to an SGW (Serving Gateway), a PGW (network Gateway, PDN Gateway), an MME (Mobile Management Entity), a TCF (Trunking control Function) and a TMF (Trunking Media Function).
Specifically, the method for transmitting media data may be applied to an SGW of an enhanced trunking core network, and as shown in fig. 1, is a flowchart of an embodiment 1 of a method for transmitting media data provided by the present application, where the method includes:
s100, the SGW receives media data sent by the calling terminal, wherein the media data comprises the IP and the port of the calling terminal and the IP and the port of the target terminal.
One terminal and another terminal in the broadband trunking communication system can communicate through the established bearer. Specifically, the calling terminal and the target terminal can communicate through the established bearer.
The calling terminal may transmit the media data on a communication-enabled basis. The media data sent by the calling terminal may also include audio data and/or video data.
The target terminal may be a called terminal, and may also be a TMF in the broadband trunking communication system.
S101, the SGW searches a pre-established quick forwarding corresponding relation.
Wherein the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal.
In this embodiment, the process of establishing the fast forwarding correspondence may include:
s1011, the SGW receives a rapid forwarding corresponding relation establishment instruction sent by the MME.
And the rapid forwarding corresponding relation establishing instruction is sent to the MME by the TCF under the condition that the TCF judges that a preset rapid forwarding corresponding relation establishing condition is met.
The preset fast forwarding correspondence establishing condition may at least include: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal.
The network server of the calling terminal and the gateway server of the called terminal in the preset fast forwarding correspondence establishing condition are the same, and may include but are not limited to:
and the SGW and the PGW corresponding to the calling terminal are the same as those corresponding to the called terminal.
S1012, the SGW responds to the fast forwarding correspondence establishing instruction to establish the fast forwarding correspondence, where the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal.
S102, under the condition that the target terminal IP and the port are included in the pre-established quick forwarding corresponding relation, a called terminal is determined to be the target terminal, and the media data are sent to the called terminal.
Because the corresponding relation between the IP and the port of the calling terminal and the IP port of the called terminal is recorded in the pre-established fast forwarding corresponding relation, the called terminal can be determined as the target terminal under the condition that the pre-established fast forwarding corresponding relation contains the IP and the port of the target terminal.
It can be understood that the transmission method of media data disclosed in this embodiment may be applied to a single call scenario and a group call scenario. It should be noted that, when the method is applied to a single call scenario, the fast forwarding correspondence includes a correspondence between the IP and the port of the calling terminal and the IP and the port of a called terminal. When the method is applied to a group calling scene, the quick forwarding corresponding relation comprises the corresponding relation between the IP and the port of the calling terminal and the IP and the port of at least one called terminal.
It can be understood that, under the condition that the pre-established fast forwarding correspondence includes the destination IP and the port, the media data does not need to be subjected to format conversion, and can be sent to the called terminal according to the path of SGW → called terminal, and the media data does not need to be sent to the TCF according to the path of SGW → PGW → TCF, and certainly does not need to pass through the path of TMF → PGW → SGW → called terminal. Therefore, by establishing the fast forwarding corresponding relation in advance and searching the way of the established fast forwarding corresponding relation when the media data sent by the host terminal is received, the transmission path of the media data can be reduced, and the bandwidth and the processing resource can be saved. In contrast to the transmission path of the media data corresponding to the steps S100 to S102 in the present embodiment and the transmission path of the media data in the conventional manner, referring to fig. 2, as shown in fig. 2, path 1 (i.e., B-TrunC UE1 → eNB1 → eSGW → eNB2 → B-TrunC UE2) may represent the transmission path of the media data corresponding to the steps S100 to S102 in the present embodiment, and path 2 (i.e., B-TrunC UE1 → eNB1 → eSGW → ePGW → TMF → ePGW → eSGW → eNB2 → B-TrunC UE2) may represent the transmission path of the media data in the conventional manner.
The media data transmission between the calling terminal and the called terminal is realized based on the calling terminal load and the called terminal load. In this embodiment, the bearer of the calling terminal may be a part or all of the transport physical channels in the bearers between the calling terminal, the SGW, the PGW, and the TMF, and correspondingly, the bearer of the called terminal may be a part or all of the transport physical channels in the bearers between the called terminal, the SGW, the PGW, and the TMF. However, the calling terminal bearer and the called terminal bearer can at least ensure that media data is transmitted between the calling terminal and the called terminal.
Corresponding to the scheme in this embodiment that the SGW directly sends the media data to the called terminal, the process of establishing the bearer of the calling terminal and the bearer of the called terminal may be:
establishing a bearer among the calling terminal, the SGW, the PGW and the TMF, and taking the bearer between the calling terminal and the SGW in the bearers among the calling terminal, the SGW, the PGW and the TMF as a calling terminal bearer;
establishing bearers among the called terminal, the SGW, the PGW and the TMF, and taking the bearer between the called terminal and the SGW in the bearers among the called terminal, the SGW, the PGW and the TMF as the bearer of the called terminal;
or, establishing a bearer between the calling terminal and the SGW as a calling terminal bearer;
and establishing a bearer between the called terminal and the SGW as the called terminal bearer.
The method has the advantages that the load between the calling terminal and the SGW and the load between the called terminal and the SGW are directly established, the signaling interaction is less, the data processing amount is less, and the occupied processing resources are less.
In the application, after receiving media data sent by a calling terminal, a serving gateway SGW searches for a pre-established fast forwarding correspondence, determines whether an IP and a port of a target end exist in the fast forwarding correspondence, and if so, indicates that a called terminal is the target end, the SGW can directly send the media data to the called terminal, so that the media data does not need to be transmitted to a TMF (trusted multimedia broadcast) again, that is, the media data does not need to be transmitted to the TMF through a PGW, that is, the forwarding of the media data does not need to pass through the PGW and the TMF, thereby realizing fast forwarding of the media data, improving service use experience of users, and avoiding waste of bandwidth and processing resources.
As embodiment 2 of the present application, referring to fig. 3, a schematic flow diagram of embodiment 2 of a media data transmission method provided by the present application is provided, where this embodiment is mainly an extension of the media data transmission method described in the foregoing embodiment 1, and as shown in fig. 3, the method may include, but is not limited to, the following steps:
s200, the SGW receives media data sent by a calling terminal, wherein the media data comprises an IP and a port of the calling terminal and an IP and a port of a target terminal.
S201, the SGW searches a pre-established fast forwarding corresponding relation.
Wherein the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal.
S202, under the condition that the target terminal IP and the port are included in the pre-established quick forwarding corresponding relation, the called terminal is determined to be the target terminal, and the media data are sent to the called terminal.
The detailed processes of steps S200-S202 can be referred to the related descriptions of steps S100-S102 in embodiment 1, and are not described herein again.
S203, under the condition that the target end IP and the port are not included in the pre-established quick forwarding corresponding relation, determining that the TMF is the target end, sending the media data to the TMF so that the TMF sends the media data to the called terminal or carries out format conversion on the media data, and sending the media data after format conversion to the called terminal.
The process of the SGW sending the media data to the TMF specifically includes: and the SGW sends the media data to the PGW, and the PGW sends the media data to the TMF.
Certainly, when the media data needs to be subjected to format conversion, the TMF may send the media data to the called terminal; when the media data needs to be subjected to format conversion, the TMF performs format conversion on the media data first, and then sends the media data subjected to format conversion to the called terminal.
However, whether media data without format conversion or media data after format conversion is transmitted, the transmission process of the TMF is as follows:
and transmitting according to the path of TMF → PGW → SGW → called terminal.
In embodiment 3 of the present application, another method for transmitting media data, which is applicable to a TCF, is described, where the method includes:
s300, the TCF receives a call establishment request sent by the calling terminal.
When a calling terminal needs to have a conversation with another terminal, the calling terminal needs to send a request to a core network to establish a bearer for transmitting media data.
S301, the TCF judges whether a preset quick forwarding corresponding relation establishment condition is met.
The preset condition for establishing the fast forwarding corresponding relationship at least comprises the following steps: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal.
If yes, go to step S302.
S302, the TCF sends a fast forwarding corresponding relation establishment instruction to an MME, so that the MME sends the fast forwarding corresponding relation establishment instruction to the SGW and the SGW establishes the fast forwarding corresponding relation;
wherein the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal; and the fast forwarding corresponding relation is used for the SGW to search the fast forwarding corresponding relation when receiving the media data sent by the calling terminal, wherein the media data comprises the IP and the port of the calling terminal and the IP and the port of the target terminal, and the SGW determines that the called terminal is the target terminal and sends the media data to the called terminal under the condition that the fast forwarding corresponding relation comprises the IP and the port of the target terminal.
In embodiment 4 of the present application, another media data transmission method is introduced, which is applicable to an MME, and includes:
s400, the MME receives a rapid forwarding corresponding relation establishment instruction sent by the TCF.
The fast forwarding correspondence establishing instruction is sent to the MME by the TCF when it is determined that a preset fast forwarding correspondence establishing condition is satisfied, where the preset fast forwarding correspondence establishing condition at least includes: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal.
S401, the MME sends the fast forwarding correspondence establishing instruction to an SGW, the fast forwarding correspondence establishing instruction establishes the fast forwarding correspondence for the SGW, and the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal.
In embodiment 5 of the present application, another method for transmitting media data is introduced, which is applicable to a TMF, and includes:
s500, the TMF receives media data sent by the SGW, wherein the media data is sent when the SGW receives the media data of the calling terminal, searches a pre-established fast forwarding corresponding relation, and sends the media data under the condition that the pre-established fast forwarding corresponding relation does not contain the IP and the port of the target terminal.
S501, the TMF sends the media data to the called terminal or carries out format conversion on the media data, and sends the media data after format conversion to the called terminal.
In the following, a method for transmitting media data is described with an embodiment including a bearer establishment procedure and a media data transmission procedure, as shown in fig. 4, first completing terminal registration and SIP registration, and then performing the following procedures:
s400, a calling terminal initiates a call, and sends a call establishment request (CallRequest) to an MME, wherein the call establishment request comprises the IP (Internet protocol), the port and the supported media format information of the calling terminal, and the identity of the calling terminal and the identity of a called terminal, such as the calling number of the terminal;
s401, the MME sends a call establishment request (Sip-Invite) to the TCF;
s402, the TCF responds to the call establishment request and sends a first bearer establishment request to the MME;
s403, the MME sends the first bearer establishment request to the SGW;
s404, the SGW establishes a first bearer of the calling terminal, wherein the first bearer of the calling terminal is a bearer among the calling terminal, the SGW, the PGW and the TMF;
s405, the TCF searches for the registration information stored in the TCF based on the identity identifications of the calling terminal and the called terminal, obtains the SGW and the PGW corresponding to the identity identification of the calling terminal and the SGW and the PGW corresponding to the identity identification of the called terminal, and judges whether the SGW and the PGW corresponding to the calling terminal are the same as the SGW and the PGW corresponding to the called terminal. The steps S405 and S402 may be executed simultaneously or sequentially.
If it is determined that the SGW and the PGW corresponding to the calling terminal are different from the SGW and the PGW corresponding to the called terminal, it indicates that the SGW and the PGW that the calling terminal and the called terminal pass through are both different, that is, the SGW and the PGW are across xgw (serving Gateway and pdngateway), so that call processing needs to be implemented by using a method in the prior art, and at this time, the TCF performs S425: the call establishment request is sent to the TMF, and the subsequent process is the same as the process of performing call processing in the prior art, which is not described herein again.
S406, if the TCF determines that the SGW and the PGW corresponding to the calling terminal are the same as the SGW and the PGW corresponding to the called terminal, sending a called signaling to the MME, where the signaling is used to query the relevant information of the called terminal.
S407, the MME sends the called signaling to the called terminal;
s408, the called terminal responds to the called signaling and sends called information to the MME, wherein the called information comprises the IP, the port and the supported media format information of the called terminal;
s409, the MME sends the received called information to the TCF;
s410, after receiving the called information, the TCF sends a second bearer establishment request to the MME;
s411, the MME sends a second bearer establishment request to the SGW;
s412, the SGW responds to the second bearer establishment request, and establishes a first bearer of the called terminal, where the first bearer of the called terminal is a bearer between the called terminal, the SGW, the PGW, and the TMF.
S413, the TCF determines whether the media format supported by the calling terminal is the same as the media format supported by the called terminal. The steps S413 and S410 may be executed simultaneously or sequentially.
If the media formats supported by the calling terminal and the called terminal are different, it indicates that the media data sent by the calling terminal needs to be modified by transcoding of TMF, and then S426: the call establishment request is sent to the TMF, and the related steps of implementing the call (e.g., single call or group call) in the prior art are subsequently executed, which are not described herein again.
S414, if the media formats supported by the calling terminal and the called terminal are the same, the TCF sends a third bearer establishment request to the MME;
s415, the MME sends a third bearer establishment request to the SGW;
and S416, the SGW responds to the third establishment request, establishes a fast forwarding corresponding relation, takes the load between the calling terminal and the SGW in the first load of the calling terminal as the load of the calling terminal, and takes the load between the called terminal and the SGW in the first load of the called terminal as the load of the called terminal, wherein the fast forwarding corresponding relation comprises the corresponding relation between the IP (Internet protocol), the port and the load ID (identity) of the calling terminal and the IP, the port and the load ID of the called terminal.
S417, the TCF sends the calling terminal address information including the IP and the port of the calling terminal to the MME;
s418, the MME sends the address information of the calling terminal to the called terminal;
s419, the TCF sends the called terminal address information including the IP and the port of the called terminal to the MME;
and S420, the MME sends the address information of the called terminal to the calling terminal.
The steps S400 to S420 are processes of establishing a bearer between the calling terminal and the SGW, a bearer between the called terminal and the SGW, and a fast forwarding correspondence, where the established bearer is used to transmit media data sent by the terminal.
S421, the SGW receives media data sent by the calling terminal, wherein the media data comprises audio and video data, the IP and the port of the calling terminal, and the IP and the port of the target terminal;
s422, the SGW searches for a quick forwarding corresponding relation to determine whether the corresponding relation comprises the IP and the port of the target end;
and S423, if the fast forwarding corresponding relation includes the IP and the port of the target terminal, indicating that the called terminal is the target terminal, the SGW carries the media data through the called terminal corresponding to the carrying ID according to the carrying ID of the called terminal recorded in the fast forwarding corresponding relation, and sends the media data to the called terminal corresponding to the IP and the port of the called terminal.
S424, if the fast forwarding correspondence does not include the IP and the port of the target end, it indicates that the TMF is the target end, that is, the media data needs to be transcoded and modified by the TMF and then sent to the called terminal, and at this time, the SGW sends the media data to the TMF through the PGW.
The following describes a transmission device of media data provided in the present application, and the transmission device of media data described below and the transmission method of media data described above can be referred to correspondingly.
The embodiment provides a media data transmission apparatus, which is applicable to an SGW, and the media data transmission apparatus may include:
the first receiving module is used for receiving media data sent by a calling terminal, wherein the media data comprises an IP (Internet protocol) and a port of the calling terminal and an IP and a port of a target terminal;
the first determining module is used for searching a pre-established quick forwarding corresponding relation and determining the called terminal as the target terminal under the condition that the pre-established quick forwarding corresponding relation comprises the target terminal IP and the port; wherein the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal;
and the first sending module is used for sending the media data to the called terminal.
In this embodiment, the media data transmission apparatus may further include:
a second determining module, configured to determine, when the target IP and the port are not included in the pre-established fast forwarding correspondence, that the cluster media function block TMF is the target;
and the second sending module is used for sending the media data to the TMF so that the TMF performs format conversion on the media data and sends the media data after format conversion to the called terminal.
In this embodiment, the media data transmission apparatus may further include:
a second receiving module, configured to receive a fast forwarding correspondence establishment instruction sent by a mobility management entity MME;
an establishing module, configured to respond to the fast forwarding correspondence establishing instruction, and establish the fast forwarding correspondence, where the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal;
the fast forwarding correspondence establishing instruction is sent to the MME by the TCF under the condition that the TCF judges that a preset fast forwarding correspondence establishing condition is met;
the preset condition for establishing the fast forwarding corresponding relationship at least comprises the following steps: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal.
In another embodiment of the present application, there is provided a transmission apparatus of media data, applicable to a TCF, the transmission apparatus of media data may include:
a third receiving module, configured to receive a call establishment request sent by a calling terminal;
a judging module, configured to judge whether a preset fast forwarding correspondence establishment condition is satisfied, where the preset fast forwarding correspondence establishment condition at least includes: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal;
a third sending module, configured to send a fast forwarding correspondence establishment instruction to a mobility management entity MME if a preset fast forwarding correspondence establishment condition is met, so that the MME sends the fast forwarding correspondence establishment instruction to the SGW, and the SGW establishes the fast forwarding correspondence;
wherein the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal; and the fast forwarding corresponding relation is used for the SGW to search the fast forwarding corresponding relation when receiving the media data sent by the calling terminal, wherein the media data comprises the IP and the port of the calling terminal and the IP and the port of the target terminal, and the SGW determines that the called terminal is the target terminal and sends the media data to the called terminal under the condition that the fast forwarding corresponding relation comprises the IP and the port of the target terminal.
In another embodiment of the present application, there is provided a media data transmission apparatus, which is applicable to an MME and may include:
a fourth receiving module, configured to receive a fast forwarding correspondence establishment instruction sent by a cluster control function block TCF, where the fast forwarding correspondence establishment instruction is sent to the MME by the TCF when it is determined that a preset fast forwarding correspondence establishment condition is met, where the preset fast forwarding correspondence establishment condition at least includes: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal;
a fourth sending module, configured to send the fast forwarding correspondence establishing instruction to a serving gateway SGW, where the fast forwarding correspondence establishing instruction establishes the fast forwarding correspondence for the SGW, and the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal.
In another embodiment of the present application, there is provided a transmission apparatus of media data, applicable to a TMF, the transmission apparatus of media data may include:
a fifth receiving module, configured to receive media data sent by a serving gateway SGW, where the media data is sent when the SGW receives the media data of a calling terminal, and searches for a pre-established fast forwarding correspondence, where the pre-established fast forwarding correspondence does not include the target IP and the port;
and the fifth sending module is used for carrying out format conversion on the media data and sending the media data after the format conversion to the called terminal.
In another embodiment of the present application, a transmission system of media data is provided, please refer to fig. 5, the transmission system of media data includes: calling terminal 11, called terminal 12, TCF13, MME14 and SGW 15.
The calling terminal 11 is configured to send a call setup request to the TCF 13;
the TCF13 is configured to receive the call establishment request, determine whether a preset fast forwarding correspondence establishment condition is satisfied, and if so, send a fast forwarding correspondence establishment instruction to the MME14, where the preset fast forwarding correspondence establishment condition at least includes: the gateway server of the calling terminal 11 is the same as the gateway server of the called terminal 12, and the media format supported by the calling terminal 11 is the same as the media format supported by the called terminal 12;
the MME14 is configured to receive the fast forwarding correspondence establishing instruction, and send the fast forwarding correspondence establishing instruction to the SGW 15;
the SGW15 is configured to receive the fast forwarding correspondence establishing instruction, and respond to the fast forwarding correspondence establishing instruction to establish the fast forwarding correspondence, where the fast forwarding correspondence includes: the IP and port of the calling terminal 11 and the IP and port of the called terminal 12;
the SGW15 is further configured to receive media data sent by the calling terminal 11, where the media data includes an IP and a port of the calling terminal 11 and an IP and a port of a target terminal, search the fast forwarding correspondence, determine that the called terminal 12 is the target terminal when the fast forwarding correspondence includes the target terminal IP and the port, and send the media data to the called terminal 12.
In another embodiment of the present application, there is provided a transmission system of media data, as shown in fig. 6, on the basis of the transmission system of media data shown in fig. 5, the transmission system of media data may further include: TMF 16.
In this embodiment, the SGW15 may be further configured to determine that the cluster media function block TMF16 is the target end and send the media data to the TMF when the target end IP and the port are not included in the pre-established fast forwarding correspondence;
the TMF16 is configured to perform format conversion on the media data, and send the media data after format conversion to the called terminal 12.
In another embodiment of the present application, there is provided an SGW, which may include:
a memory for storing a program;
the processor is configured to execute the program, and when the processor executes the program, the processor implements the media data transmission method as described in embodiment 1 or embodiment 2.
In another embodiment of the present application, there is provided a TCF, which may include:
a memory for storing a program;
the processor is configured to execute the program, and when the processor executes the program, the processor implements the media data transmission method as described in embodiment 3.
In another embodiment of the present application, there is provided an MME, which may include:
a memory for storing a program;
the processor is configured to execute the program, and when the processor executes the program, the processor implements the media data transmission method as described in embodiment 4.
In another embodiment of the present application, there is provided a TMF, which may include:
a memory for storing a program;
the processor is configured to execute the program, and when the processor executes the program, the processor implements the media data transmission method as described in embodiment 5.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (12)

1. A method for transmitting media data, comprising:
a Service Gateway (SGW) receives media data sent by a calling terminal, wherein the media data comprises an IP (Internet protocol) and a port of the calling terminal and an IP and a port of a target terminal;
the SGW searches a pre-established fast forwarding corresponding relation, determines a called terminal as the target terminal under the condition that the pre-established fast forwarding corresponding relation comprises the target terminal IP and a port, and sends the media data to the called terminal;
wherein the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal.
2. The method of claim 1, wherein the method further comprises:
and under the condition that the target end IP and the port are not included in the pre-established quick forwarding corresponding relation, determining a cluster media function block (TMF) as the target end, sending the media data to the TMF so that the TMF carries out format conversion on the media data, and sending the media data after format conversion to the called terminal.
3. The method of claim 1, wherein the fast forwarding correspondence establishing process comprises:
the SGW receives a rapid forwarding corresponding relation establishment instruction sent by a mobile management entity MME;
the SGW responds to the fast forwarding correspondence establishing instruction to establish the fast forwarding correspondence, where the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal;
the fast forwarding correspondence establishing instruction is sent to the MME by the TCF under the condition that the TCF judges that a preset fast forwarding correspondence establishing condition is met;
the preset condition for establishing the fast forwarding corresponding relationship at least comprises the following steps: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal.
4. A method for transmitting media data, comprising:
a cluster control function (TCF) receives a call establishment request sent by a calling terminal;
the TCF judges whether a preset fast forwarding corresponding relationship establishment condition is met, wherein the preset fast forwarding corresponding relationship establishment condition at least comprises the following steps: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal;
if so, the TCF sends a fast forwarding corresponding relation establishment instruction to a Mobility Management Entity (MME), so that the MME sends the fast forwarding corresponding relation establishment instruction to the SGW and the SGW establishes the fast forwarding corresponding relation;
wherein the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal; and the fast forwarding corresponding relation is used for the SGW to search the fast forwarding corresponding relation when receiving the media data sent by the calling terminal, wherein the media data comprises the IP and the port of the calling terminal and the IP and the port of the target terminal, and the SGW determines that the called terminal is the target terminal and sends the media data to the called terminal under the condition that the fast forwarding corresponding relation comprises the IP and the port of the target terminal.
5. A method for transmitting media data, comprising:
a mobile management entity MME receives a fast forwarding correspondence establishment instruction sent by a cluster control function block TCF, where the fast forwarding correspondence establishment instruction is sent to the MME by the TCF when it is determined that a preset fast forwarding correspondence establishment condition is satisfied, and the preset fast forwarding correspondence establishment condition at least includes: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal;
the MME sends the fast forwarding correspondence establishing instruction to a serving gateway SGW, where the fast forwarding correspondence establishing instruction establishes the fast forwarding correspondence for the SGW, and the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal.
6. A method for transmitting media data, comprising:
a cluster media function block (TMF) receives media data sent by a Service Gateway (SGW), wherein the media data is sent when the SGW receives the media data of a calling terminal, a pre-established fast forwarding corresponding relation is searched, and the media data is sent under the condition that the pre-established fast forwarding corresponding relation does not contain a target terminal IP and a port;
and the TMF carries out format conversion on the media data and sends the media data after format conversion to the called terminal.
7. A system for transmitting media data, comprising: a calling terminal, a called terminal, a cluster control function block TCF, a mobile management entity MME and a service gateway SGW;
the calling terminal is used for sending a call establishment request to the TCF;
the TCF is configured to receive the call establishment request, determine whether a preset fast forwarding correspondence establishment condition is satisfied, and if so, send a fast forwarding correspondence establishment instruction to the MME, where the preset fast forwarding correspondence establishment condition at least includes: the gateway server of the calling terminal is the same as the gateway server of the called terminal, and the media format supported by the calling terminal is the same as the media format supported by the called terminal;
the MME is used for receiving the fast forwarding corresponding relation establishing instruction and sending the fast forwarding corresponding relation establishing instruction to the SGW;
the SGW is configured to receive the fast forwarding correspondence establishing instruction, and respond to the fast forwarding correspondence establishing instruction to establish the fast forwarding correspondence, where the fast forwarding correspondence includes: the IP and the port of the calling terminal correspond to the IP and the port of the called terminal;
the SGW is further configured to receive media data sent by the calling terminal, where the media data includes an IP and a port of the calling terminal and an IP and a port of a target terminal, search the fast forwarding correspondence, determine that a called terminal is the target terminal when the fast forwarding correspondence includes the IP and the port of the target terminal, and send the media data to the called terminal.
8. The system of claim 7, wherein the system further comprises: a cluster media function block TMF;
the SGW is further configured to determine, when the target IP and the port are not included in the pre-established fast forwarding correspondence, that a cluster media function block TMF is the target, and send the media data to the TMF;
and the TMF is used for converting the format of the media data and sending the media data after format conversion to the called terminal.
9. A serving gateway, SGW, comprising:
a memory for storing a program;
the processor for executing the program, when the processor executes the program, the processor implementing the transmission method of media data according to any one of claims 1 to 3.
10. A cluster control function block, TCF, comprising:
a memory for storing a program;
the processor for executing the program, when the processor executes the program, the processor implementing the transmission method of media data according to claim 4.
11. A Mobility Management Entity (MME), comprising:
a memory for storing a program;
the processor for executing the program, when the processor executes the program, the processor implementing the transmission method of media data according to claim 5.
12. A group media function TMF, comprising:
a memory for storing a program;
the processor for executing the program, when the processor executes the program, the processor implementing the transmission method of media data according to claim 6.
CN201911259897.9A 2019-12-10 2019-12-10 Method, system and related equipment for transmitting media data Active CN110958581B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911259897.9A CN110958581B (en) 2019-12-10 2019-12-10 Method, system and related equipment for transmitting media data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911259897.9A CN110958581B (en) 2019-12-10 2019-12-10 Method, system and related equipment for transmitting media data

Publications (2)

Publication Number Publication Date
CN110958581A true CN110958581A (en) 2020-04-03
CN110958581B CN110958581B (en) 2022-03-22

Family

ID=69980651

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911259897.9A Active CN110958581B (en) 2019-12-10 2019-12-10 Method, system and related equipment for transmitting media data

Country Status (1)

Country Link
CN (1) CN110958581B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114205337A (en) * 2021-11-05 2022-03-18 海能达通信股份有限公司 Media capability negotiation method, device, equipment and computer readable storage medium
CN116566955A (en) * 2023-07-07 2023-08-08 杭州英旭智能科技有限公司 Digital voice call method, device and application based on mqtt

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1691817A (en) * 2004-04-30 2005-11-02 华为技术有限公司 Session establishing method
CN101247404A (en) * 2008-03-24 2008-08-20 华为技术有限公司 Media stream detecting method and device
CN101258717A (en) * 2005-11-25 2008-09-03 中兴通讯股份有限公司 Medium gateway system and method for realizing medium gateway internal call
CN103609147A (en) * 2012-10-25 2014-02-26 华为技术有限公司 Cluster communication system, cluster server, access network and cluster communication method
CN103905380A (en) * 2012-12-25 2014-07-02 ***通信集团公司 Service call method, device and system
CN105282713A (en) * 2014-07-23 2016-01-27 普天信息技术有限公司 Group call service establishment method based on TD-LTE broadband cluster system
CN106102018A (en) * 2016-05-31 2016-11-09 海能达通信股份有限公司 Communication configuration method in the trunking communication of a kind of broadband and device
CN107659575A (en) * 2017-10-12 2018-02-02 京信通信***（中国）有限公司 A kind of broadband Cluster Multimedia functive and its session method
CN108012342A (en) * 2016-10-26 2018-05-08 普天信息技术有限公司 Multicast service handling method and device in a kind of LTE-M networks
CN109673004A (en) * 2017-10-13 2019-04-23 成都鼎桥通信技术有限公司 The method and apparatus of terminal acquisition group service server address

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1691817A (en) * 2004-04-30 2005-11-02 华为技术有限公司 Session establishing method
CN101258717A (en) * 2005-11-25 2008-09-03 中兴通讯股份有限公司 Medium gateway system and method for realizing medium gateway internal call
CN101247404A (en) * 2008-03-24 2008-08-20 华为技术有限公司 Media stream detecting method and device
CN103609147A (en) * 2012-10-25 2014-02-26 华为技术有限公司 Cluster communication system, cluster server, access network and cluster communication method
CN103905380A (en) * 2012-12-25 2014-07-02 ***通信集团公司 Service call method, device and system
CN105282713A (en) * 2014-07-23 2016-01-27 普天信息技术有限公司 Group call service establishment method based on TD-LTE broadband cluster system
CN106102018A (en) * 2016-05-31 2016-11-09 海能达通信股份有限公司 Communication configuration method in the trunking communication of a kind of broadband and device
CN108012342A (en) * 2016-10-26 2018-05-08 普天信息技术有限公司 Multicast service handling method and device in a kind of LTE-M networks
CN107659575A (en) * 2017-10-12 2018-02-02 京信通信***（中国）有限公司 A kind of broadband Cluster Multimedia functive and its session method
CN109673004A (en) * 2017-10-13 2019-04-23 成都鼎桥通信技术有限公司 The method and apparatus of terminal acquisition group service server address

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
吴志斌等: "TD-LTE宽带数字集群核心网设计", 《移动通信》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114205337A (en) * 2021-11-05 2022-03-18 海能达通信股份有限公司 Media capability negotiation method, device, equipment and computer readable storage medium
CN114205337B (en) * 2021-11-05 2024-03-15 海能达通信股份有限公司 Media capability negotiation method, device, equipment and computer readable storage medium
CN116566955A (en) * 2023-07-07 2023-08-08 杭州英旭智能科技有限公司 Digital voice call method, device and application based on mqtt
CN116566955B (en) * 2023-07-07 2023-09-19 杭州英旭智能科技有限公司 Digital voice call method, device and application based on mqtt

Also Published As

Publication number Publication date
CN110958581B (en) 2022-03-22

Similar Documents

Publication Publication Date Title
CN112153098B (en) Application migration method and device
JP6855575B2 (en) How to change between networks and devices, and related devices
JP4252771B2 (en) Wireless terminal, wireless terminal management device, and location registration auxiliary device
WO2019174505A1 (en) Network slice-based communication method and apparatus
EP2428001B1 (en) Method for supporting pdn gw selection
KR101334833B1 (en) Network registering method, mobile station, and subscriber information managing server
US7764953B2 (en) Method, system and device for speech Codec negotiation in communication system
CN108924872B (en) Data transmission method, terminal and core network equipment
US20130242866A1 (en) Method for device to device communication and base station and user equipment using the same
CN103609150A (en) Traffic offload via local network based on APN-specific or non-APN-specific informaiton
JP2005192207A (en) Image/voice communication system of ip base, and active call conversion/active call pickup method using it
EP3046351A1 (en) Method and device for realizing terminal wifi talkback
WO2016099174A1 (en) Method and apparatus for receiving, by mobile terminal in idle mode, mobile end service in communication system
CN110958581B (en) Method, system and related equipment for transmitting media data
CN109005594B (en) D2D communication connection method, device, equipment and storage medium
CN108076449B (en) Emergency call method, trunking communication system, base station and control device
RU2000122979A (en) SYSTEM AND METHOD FOR MAKING MOBILE DATA TRANSFER SERVICES
TW548999B (en) Methods and systems for error handling in radiocommunication systems employing pre-paging
JP3847755B2 (en) Method for routing a message between a mobile control function entity and a cell control function entity in a distributed radio access network
JP5480528B2 (en) Communication method and communication system
JP4823096B2 (en) Wireless terminal calling method of mobile communication system, gateway device, and mobile communication system
WO2019026324A1 (en) Base station device for establishing connection with terminal device, control method, and program
KR101897539B1 (en) Method and apparatus for transmitting data
JP2005354423A (en) Radio communication system, radio communication method, communication controller
JPH11275622A (en) Device and method for processing inter-office hand-off

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant