CN100370872C - Session establishing method - Google Patents
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- CN100370872C CN100370872C CNB2004100367958A CN200410036795A CN100370872C CN 100370872 C CN100370872 C CN 100370872C CN B2004100367958 A CNB2004100367958 A CN B2004100367958A CN 200410036795 A CN200410036795 A CN 200410036795A CN 100370872 C CN100370872 C CN 100370872C
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Abstract
The present invention discloses a session establishing method for processing the session establishment of a wireless one-key-pass service system. The method comprises the following steps that medium receiving attributes of medium data packets which are received by the self of terminals are respectively registered to a network side, and a wireless one-key-pass server of the network side transmits the medium data packets transmitted by the calling terminal to the called terminal to receive according to registration information pf the medium receiving attribute of the called terminal. The session establishing method of the present invention increase the session establishing speed of 'wireless one-key-pass' service, and a user can deeply experience the instant pressing and instant talking advantage of 'the wireless one-key-pass service'.
Description
Technical field
The present invention relates to the Push to talk over Cellular technology, relate in particular to the session establishing method that is applied in the Push to talk over Cellular technology.
Background technology
Press-and-talk (PTT, Push To Talk) i.e. " PTT " business is a kind of point-to-point or the voice communication service of putting multiple spot.In the PTT communication process, to speak press certain special keys (below abbreviating this special keys as the PTT button) of PTT terminal (as intercom) as the user after, its other party that communicates with can only be answered this moment, can not talk; After unclamping the PTT button, this user then can only answer the speech of its other party.Therefore existing P TT business is widely used in various special-purpose trunked communication systems, its main business can be spoken after being characterized as the PTT button that the user presses the PTT terminal, network directly sends to this user's voice the member of whole group, the PTT communication mode adopts the half-duplex operation mode, be the user when speaking other users can only answer and can not talk, when unclamping the PTT button after the user finishes words, other users just can press the PTT button request speech of PTT terminal separately.Therefore the PTT business is subjected to the concern of industry deeply because of it has easy to operate, advantages such as call setup speed fast, support group communication mode.
And " Push to talk over Cellular " professional (POC, PTT Over Cellular) is meant the communication mode that on existing common mobile communication network, moves the PTT business, and the common mobile communication network of indication generally is meant to have and can provide IP communication capacity for terminal here, make between the terminal and can carry out the mobile communications network of voice communication, as GPRS network, WCDMA network or wlan network etc. based on VoIP (Voice over IP) mode.Because the POC technical standard is based on 3GPP IMS (IMS, IP Multimedia Subsystem, IP Multimedia System) open technique, therefore the POC business has a city's field splitting that helps reduce operation equipment and terminal equipment, guarantee interconnecting between each vendor equipment, and allow the user use the PTT business more easily.
The communication system that provides the POC business can be divided into signaling plane and two parts of user's face on function; Wherein signaling plane mainly is responsible for handling the foundation and the release of session, and user's face mainly is responsible for the transmission of processed voice data flow.And signaling plane mainly adopts session initiation protocol (SIP, Session InitiationProtocol) the session process between the terminal is set up and discharged, basic signaling Internet era that wherein Session Initiation Protocol being, its major function are exactly to be used for setting up, change and to stop calling between the user terminal of IP based network.
With reference to Fig. 1, this figure carries out the process schematic diagram that the POC session is set up based on Session Initiation Protocol in the prior art.Terminal 1 and terminal 2 all are the terminal equipment with POC function among the figure, and POC server (POCService) is for handling the server of call setup and exchanges voice data; Then when the terminal 2 of calling out as calling party's terminal 1 as the callee, its main call establishment is as follows:
1, the user presses the PTT button request foundation of terminal 1 and the session of terminal 2, then terminal 1 is when the PTT button of self is pressed, send to the POC server of network side that an invitation message signaling (Invite) is used for request and terminal 2 is set up session, wherein include the id information of terminal 2 in this Invite message signaling.
2, POC server gives terminal 1 feedback 200OK message signaling after receiving Invite message signaling, has successfully received the conversation request of terminal 1 with notice terminal 1; POC server sends Invite message signaling to terminal 2 and enters session to invite terminal 2 simultaneously.
3, after terminal 1 receives the 200OK message signaling of POC server feedback, return acknowledge message signaling (ACK) and give POC server, to show the response of the system that self received.
4, feedback 200OK message signaling was given POC server after terminal 2 received Invite message signaling, self adhereed to this session to show, terminal 2 is notified to POC server to the IP address and the port numbers that self receive VoP simultaneously.
5, after POC server receives the 200OK message signaling that terminal 2 sends, to terminal 2 feeding back ACK message signalings, to show the response that receives terminal 2; Simultaneously POC server has entered the session process to terminal 1 signaling (Notify) that sends a notification message with notice terminal 1 present terminal 2, and terminal 1 just indicates the calling subscriber to talk at this moment.
6, after terminal 1 received the Notify message signaling that POC server sends, feedback 200OK message signaling was given POC server, shows to receive Notify message signaling;
7, the calling subscriber begins speech after receiving the indication of terminal 1, terminal 1 sends to POC server after the packing of calling subscriber's speech data is handled, POC server self receives the IP address and the port number information of VoP according to the terminal 2 that obtains in the step 4 again, and the corresponding port that VoP is transmitted to terminal 2 receives.
Thereby by above-mentioned processing procedure, processing is set up in the session that just can finish between terminal 1 and the terminal 2, and still existing this session is set up mode and but existed the long deficiency of session time of reception, and reason is as follows:
POC server only receives after agreement as callee's terminal 2 feedback enters the 200OK message signaling of session and self receive the IP address and port number information of VoP, could notify the terminal 1 transmission VoP as the calling party; And if POC server enters under the situation of the 200OK message signaling of session and IP address that self receives VoP and port number information in the agreement that does not obtain terminal 2 feedback, send VoP with regard to indicating terminal 1, then can cause because POC server is not in time learnt information such as the IP address of reception VoP of terminal 2 and port numbers, and the corresponding port that the VoP of terminal 1 can't be transmitted to terminal 2 receives, therefore the VoP that terminal 1 is sent may will be abandoned, so that terminal 2 can not in time receive the VoP that terminal 1 is sent, and causes losing of communication information.
And PTT business or POC business to bring that user's sharpest edges experience be exactly press-and-talk, wherein the conversation switching time of ordinary numbers trunked communication system generally should be less than 2 seconds, and provide the session settling time of connecting time for PTT is professional of communication system of POC business function longer slightly.If but adopt above-mentioned session to set up scheme, its POC conversation switching time in some cases even may reach greater than 10 seconds has so just caused the user can not well experience the advantage of POC business, to the POC business development on market cause unfavorable.
Summary of the invention
The objective of the invention is to propose a kind of session establishing method, set up speed, make the professional press-and-talk advantage that is had of experience " Push to talk over Cellular " that the user can be more deep with the session that improves " Push to talk over Cellular " operation system.
For achieving the above object, the present invention proposes a kind of session establishing method, be used to handle the session foundation of Push-to-talk over Cellular system, comprise step:
Each terminal receives attribute logging to network side with the medium of self receiving media data bag respectively;
The media data packet that the Push to talk over Cellular server of network side is sent calling terminal according to the medium reception attribute logging information of terminal called is transmitted to terminal called and receives.
Wherein said medium receive attribute and comprise that terminal is used for the IP address and the port numbers of receiving media data bag, reach the media data packet type that terminal can receive.
Described method comprises that also each terminal receives self the step of the signaling reception attribute logging of various types of messages signaling to network side respectively.
Wherein said signaling receives attribute and comprises that terminal is used to receive the IP address and the port numbers of various types of messages signaling.
Wherein said port is set to the User Datagram Protoco (UDP) port or is set to the transmission control protocol port.
Wherein said terminal receives attribute and signaling with self medium and receives attribute logging and further comprise to the process of network side:
Terminal sends to network side with self medium reception attribute and signaling reception attributes encapsulation in the registration message signaling;
After network side receives the registration message signaling, extract the medium that comprise in the registration message signaling and receive attribute and signaling reception attribute; And
The medium that extract are received attribute and signaling to be received attribute and carries out corresponding stored with the identification information of this terminal respectively.
Wherein the registration message signaling that includes medium reception attribute and signaling reception attribute that terminal sends to network side is handled by the Push to talk over Cellular server of network side.
Wherein said terminal receives attribute with self medium and signaling receives attribute logging to network side at every turn when starting shooting or open the Push to talk over Cellular application program; Or in start during state of activation, self medium are received attribute and signaling reception attribute logging to network side with periodic law ground.
Described method also comprises step:
Calling terminal sends and is used to ask terminal called to enter the invitation message signaling of session to the Push to talk over Cellular server;
Described server is transmitted to the terminal called reception according to the signaling reception attribute logging information of terminal called with the invitation message signaling; And
Feed back and successfully receive the message signaling to calling terminal;
After calling terminal receives the successful reception message signaling of described server feedback, send media data packet to the Push to talk over Cellular server.
Described method also comprises step:
Terminal called successfully receives the message signaling to described server feedback after receiving the next invitation message signaling of Push to talk over Cellular server forwards;
After described server receives and successfully receives the message signaling, be used to notify the current terminal called of calling terminal to enter the notification message signaling of session to the calling terminal transmission.
Simultaneously, the invention allows for a kind of session establishing method, be used to handle the session foundation of Push-to-talk over Cellular system, comprise step:
The signaling that each terminal receives self the message signaling respectively receives attribute logging to network side; And
Specify common medium for all terminals in advance by network side and receive attribute;
The media data packet that the Push to talk over Cellular server of network side is sent calling terminal according to the signaling reception attribute logging information and the preassigned medium reception attribute of terminal called is transmitted to terminal called and receives.
Wherein said signaling receives attribute and comprises that terminal is used to receive the IP address and the port numbers of various types of messages signaling; Described medium receive attribute and comprise that terminal is used for the port numbers of receiving media data bag and the media data packet type that terminal can receive; The IP address and the preassigned medium that comprise in the signaling reception attribute of then described Push to talk over Cellular server according to terminal called receive port numbers that comprises in the attribute and the media data packet type that can receive, and the media data packet that calling terminal is sent is transmitted to the terminal called reception.
Session establishing method of the present invention is that all terminals specify common medium to receive attribute with the medium reception attribute logging of self to network side or by network side by terminal in advance in advance, so just can call out in the process of terminal called at calling terminal, Push to talk over Cellular server by network side directly receives attribute or directly receives attribute according to the preassigned medium of network side according to the medium of terminal called, and the media data packet that calling terminal is sent is transmitted to the terminal called reception; And after server needn't wait until that terminal called feedback agrees to enter information such as the IP address of the message signaling of session and self receiving media data bag and port numbers, again the media data packet of calling terminal is transmitted to terminal called and receives.Thereby shortened the conversation switching speed of Push-to-talk over Cellular, and can not cause the serviced device of media data packet of calling terminal to abandon, avoided losing of communication information, thereby improved the experience of user greatly the professional press-and-talk advantage of POC.
Description of drawings
Fig. 1 carries out the process schematic diagram that the POC session is set up based on Session Initiation Protocol in the prior art;
Fig. 2 is the registration process schematic diagram of session establishing method of the present invention;
Fig. 3 utilizes Session Initiation Protocol to carry out the canonical process figure that the POC session is set up in the session establishing method of the present invention.
Embodiment
Because " Push to talk over Cellular " professional (POC, PTT Over Cellular) is the PTT business of on the mobile communications network that possesses the high-speed mobile its communication ability, moving, therefore, the terminal of working in the POC operation system should be the terminal (as the intercom equipment after the upgrading) with POC function or is the terminal that the POC application program is installed.
In the POC operation system, when having the starting up of terminal of POC function or the user open a terminal the POC application program time, terminal can be initiated the Radio Resource connection request to network side, network side just can response terminal connection request, for a dynamic IP of terminal distribution address (because terminal is when starting shooting or opening the POC application program and connect with the request Radio Resource next time, network side may distribute with current different IP address and uses to terminal, therefore terminal is initiated the Radio Resource connection request at every turn, the IP address of asking may be inequality, so be referred to as the address into the dynamic IP of terminal distribution); Finish above-mentioned network connecting request when terminal, obtain behind the IP address in mobile data communication network, can passing through session initiation protocol (SIP, Session Initiation Protocol) signaling and initiating initial registration procedure to network side.Because terminal is a portable terminal, the IP address that it takies may can change under different solicited statuss, so registration process is sex-limited when having, and therefore also can regularly initiate re-registration process to network side in above-mentioned initial registration success back terminal.Wherein network side can be responsible for the register requirement that processing terminal is sent by Push to talk over Cellular server (POC Service), can certainly be assigned to by other network entities and handle.
Terminal utilizes the SIP signaling to include the identification information public ID (as telephone number etc.) of terminal in the registration information that network side is initiated in the prior art, information such as the IP address of terminal reception various types of messages signaling and port numbers, the POC server of network side is noted these log-on messages of terminal after receiving the registration information that terminal is sent, and these log-on messages mainly are to be used for providing foundation to POC server, receive so that POC server can correctly send to the various types of messages signaling this terminal, therefore these log-on message systems are referred to as " signaling reception attribute " here.
Session establishing method of the present invention is by on the basis of existing technology, when the signaling of each endpoint registration self receives attribute, " medium reception attribute " with self is registered to network side simultaneously, promptly in normal login request message, not only include the public ID (as telephone number etc.) of terminal, IP address and port numbers that terminal receives the various types of messages signaling, also include IP address and port numbers that this terminal receives media data packet, reach the information such as media data packet type that terminal can receive, the POC server of network side or other functional entitys are after receiving these registration information of terminal, note the signaling reception IP address of this terminal and the identification information of port numbers and this terminal etc. respectively, promptly note " signaling reception attribute " log-on message of this terminal; Also to note the information such as media data packet type that IP address that this terminal receives media data packet and port numbers and this terminal can receive simultaneously, promptly note " medium reception attribute " log-on message of this terminal." signaling reception attribute " log-on message of noting like this and " medium reception attribute " log-on message just are used in follow-up POC session and set up in the process, issue process information for POC server provides transmitting signaling downwards process information and media data packet respectively.Certainly " the medium reception attribute " of terminal also can can't help terminal and initiatively be registered to network side, but after being consulted in advance by terminal and network side, is common " medium reception attributes " of all terminals appointments by network side.
With reference to Fig. 2, this figure is the registration process schematic diagram of session establishing method of the present invention; Wherein each terminal receives attribute and medium with self signaling and receives attribute initiatively to be registered to the process of network side as follows:
Step S1, when POC application program that the starting up of terminal with POC function or user open a terminal, terminal is initiated the Radio Resource connection request and is obtained from the IP address in the mobile data communication network system to network side;
After the network connection was finished, terminal was initiated initial registration request by the registration message signaling (Register) in the SIP signaling to network side.Wherein the register requirement of registration message signaling representative can be responsible for processing by POC server (POC Service); Also can handle by other network functional entities of network side, if but handle by other network functional entities of network side, POC server must obtain the log-on message of terminal in other network functional entities by communication mode, and the registration message signaling that the hypothesis terminal sends in the narration is below all directly handled by the POC server of network side;
Wherein terminal will receive the medium of self attribute and signaling and receive attributes encapsulation in the registration message signaling, to send to the POC server of network side; Wherein the medium of terminal receive the media data packet type that the IP address that comprises terminal receiving media data bag in the attribute and port numbers and terminal can receive; And the signaling of terminal receives IP address and the port numbers that comprises terminal reception various types of messages signaling in the attribute; Generally speaking, terminal receives the IP address of various types of messages signaling and the IP address of receiving media data bag is identical, is in the Radio Resource connection request that terminal initiates to distribute the dynamic IP addressing that obtains by network side; Generally is different and terminal is used to receive the port of various types of messages signaling with the port that is used for the receiving media data bag, here the port that is used on the terminal of indication receive the port of message signaling and be used for the receiving media data bag all refers to logic port, as adopting honor in User Datagram Protoco (UDP) (UDP, User DatagramProtocol) port or employing honor are in the port of transmission control protocol (TCP, Transmission ControlProtocol).
After step S2, the POC server of network side receive the registration message signaling (Register) that terminal sends, extract that the medium that comprise in the Register message signaling receive attribute and signaling receives attribute; Then the medium that extract being received attribute and signaling receives attribute and carries out corresponding stored with the identification information of the terminal that sends this Register message signaling respectively.
Step S3, the POC server of network side feed back and successfully receive the terminal that message signaling (will successfully receive the message signaling here represents with 200OK) is given transmission Register message signaling, to represent successfully to have received the Register message signaling that terminal is sent.
Because the mobility of terminal determined network side for each terminal distribution be dynamic IP addressing information, promptly may initiate the constantly different of Radio Resource connection request in terminal, the IP address that terminal is assigned to is different; So sex-limited when having with regard to the registration process that causes terminal, therefore just require terminal after the initial registration success, terminal also will initiate to re-register request process termly.Use following mode to carry out regular sending the registration message signaling as can in terminal, being provided with, receive attribute and signaling with the medium that in time self changed and receive attribute logging to network side to network side:
During starting up of terminal that setting has the POC function or terminal when opening the POC application program at every turn, and finish under the situation that network connects, the medium that self is had receive attribute and signaling receives the POC server that attribute is registered to network side respectively;
Simultaneously, for the endpoint registration information of the POC server stored that guarantees network side can in time obtain upgrading, further prevent losing of communication information, when can also and then in terminal, be arranged on the start state of activation, the endpoint registration information of storing in the POC server self medium received attribute and signaling receives the POC server of attribute logging to network side with periodic law ground, so that can in time obtain renewal.
The register flow path of each terminal on finish, and in each terminal after all the medium with self of success receive attribute and signaling and receive attribute and successfully be registered to the POC server of network side, POC server just can be by terminal the signaling of identification information (as the number information of terminal) inquiry terminal receive attribute and medium have received attribute logging information, thereby terminal just can directly have been initiated or directly receive the POC session and set up the relevant information of asking.
With reference to Fig. 3, this figure utilizes Session Initiation Protocol to carry out the canonical process figure that the POC session is set up in the session establishing method of the present invention; Its tangible actual POC session is set up in the process, may also comprise the network equipments such as SIP PROXY between terminal and POC server, only narrates the simple principle of setting up the session process between the calling and called terminal by POC server here.Wherein shown in this Figly to call out terminal B as calling terminal for terminal A as terminal called, with and terminal B between set up session communication, wherein information transmitted can be multimedia messages between the terminal, as audio-frequency information, video information or audio/video information etc., so above-mentionedly session information between the terminal is referred to as media data packet always, below only describe the process that its session is set up at the situation of transmitting audio data between the calling and called terminal, it is identical that Principle of Process is set up in the session under other media datas (as video data) transmission situation:
Step S10, calling subscriber's request and called subscriber set up session, set up session between the terminal B of the PTT button of then pressing terminal A with request and called subscriber, terminal A just generates invitation message signaling (Invite) and sends to POC server, wherein this Invite message signaling is used to ask terminal called B to enter session, and includes identification information as the terminal B of terminal called (as number information of terminal B etc.) in this Invite message signaling.
After step S20, POC server receive the Invite message signaling that terminal A sends, feed back and successfully receive message signaling (the following message signaling that successfully receives is represented with 200OK) and give terminal A, received the Invite message signaling that terminal A sends to show to terminal A;
POC server is according to the identification information of the terminal B that comprises in the Invite message signaling simultaneously, the signaling of inquiry terminal B receives attribute logging information, and receive the terminal B that comprises in the attribute according to signaling and be used to receive information such as the IP address of various types of messages signaling and port numbers, the Invite message signaling that terminal A is sent is transmitted to terminal B reception, enters the session process with requesting terminal B.
After step S30, terminal A received the 200OK message signaling of POC server feedback, feedback acknowledgment message signaling (ACK) was given POC server, to show the response of self receiving POC server.
Step S40, terminal A indicates the calling subscriber to talk after feeding back ACK message signaling is given POC server then; In the process of calling subscriber's speech, terminal A handles back formation VoP with calling subscriber's speech data packing and sends to POC server.
Step S50, after POC server receives the VoP that terminal A sends, identification information according to terminal called B, the medium of inquiry terminal B receive attribute logging information, and and then inquire medium and receive the terminal B that comprises in the attribute and be used for the information such as media data packet type that the IP address of receiving media data bag and port numbers and terminal B can receive.
Step S60, POC server receives the terminal B that comprises in the attribute according to the medium that inquire and is used for the information such as media data packet type that the IP address of receiving media data bag and port numbers and terminal B can receive, the VoP that terminal A is sent is forwarded to terminal B, and terminal B is received the VoP of being sent by terminal A by corresponding port.
Step S70, terminal B to POC server feedback 200OK message signaling, self have received the Invite message signaling that POC server is sent to show after receiving the next Invite message signaling of POC server forwarding.
After step S80, POC server receive the 200OK message signaling of terminal B feedback, send to terminal A and to be used to the notification message signaling (Notify) of notifying the current terminal B of terminal A to enter session; POC server feeding back ACK message signaling is given terminal B simultaneously, to show the response that self has received terminal B.
After step S90, terminal A received the Notify message signaling that POC server sends, feedback 200OK message signaling was given POC server, self has received the Notify message signaling that POC server is sent to show.
So far, just can successfully set up the POC session between them between calling terminal A and the terminal called B, and then just can carry out subsequent P OC session communication between terminal A and the terminal B.
Above-mentionedly simply described, each terminal is in each registration process, can also be still based on prior art, the signaling of a registration terminal self receives attribute when promptly registering, and the medium of registration terminal self do not receive attribute to network side, and remedial measure is to adopt by consulting in advance between network side and the terminal, to specify the port numbers (as the UDP/TCP port) of receiving media data bag and the media data packet type that can receive by network side for all terminals in advance.If like this POC server receive terminal called enter conversational response before just receive the media data packet that calling terminal is sent, then receive port numbers that the IP address information that comprises in the attribute and the preassigned terminal of network side be used for the receiving media data bag and the information such as media data packet type that terminal can receive according to the signaling of terminal called, the fixed medium receiving port that the media data packet that calling terminal is sent is transmitted to terminal called receives.
Process is set up in POC session as shown in Figure 3, if adopt the mode of being specified common medium reception processing attribute by network side in advance for all terminals, then its concrete processing procedure is as follows:
Wherein step S10 arrives the process of step S40 with above-mentioned, and in step S50, behind the VoP that POC server receiving terminal A sends, can receive the terminal B that comprises in the attribute logging information according to the signaling of terminal called B and be used for receiving the IP address of various types of messages signaling and the preassigned medium of network side and receive port numbers that attribute comprises and the information such as media data packet type that can receive thereof, the respective media receiving port that the VoP that calling terminal is sent is transmitted to terminal called receives.Subsequent step S60 to step S90 also with the narration of above-mentioned process, repeat no more here.
In sum, session establishing method of the present invention is by in the normal registration request process of terminal, the medium of additional registration terminal self receive attribute information, and (medium of each endpoint registration receive IP address and the port numbers that attribute can comprise terminal receiving media data bag, and the terminal information such as media data packet type that can receive) or in the register requirement process, adopt the logon mode (promptly the signaling of a registration terminal self receives attribute to network side) of existing standard by terminal, but to specify the port numbers of receiving media data bag and the information such as media data packet type that terminal can receive for terminal in advance by network side, promptly specify the common medium of all terminals to receive attribute in advance.Under such setting, calling terminal can begin speech after the success response of receiving POC server, need not to wait to receive could talk after terminal called enters the response message of session; If the calling subscriber talks before the terminal called transmission enters the meeting response message simultaneously, the information such as media data packet type that the medium of registration received attribute logging information or receive attribute logging information and can be received by the UDP/TCP port numbers and the terminal called of network side appointment in advance according to the signaling of terminal called when POC server can be registered according to terminal called, calling terminal is sent VoP be transmitted to terminal called and receive, rather than abandon or the VoP of buffer memory calling terminal.Thereby for mode is set up in prior art POC session, shortened the duration of setting up of POC session, and can not abandon the media data that calling terminal sends, therefore can not cause communication information to lose the generation of phenomenon, make the user can better experience the press-and-talk advantage of POC business, impetus has been played in the development of POC business.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (12)
1. a session establishing method is used to handle the session foundation of Push-to-talk over Cellular system, it is characterized in that, comprises step:
Each terminal receives attribute logging to network side with the medium of self receiving media data bag respectively;
The media data packet that the Push to talk over Cellular server of network side is sent calling terminal according to the medium reception attribute logging information of terminal called is transmitted to terminal called and receives.
2. session establishing method according to claim 1 is characterized in that, described medium receive attribute and comprise that terminal is used for the IP address and the port numbers of receiving media data bag, reach the media data packet type that terminal can receive.
3. session establishing method according to claim 1 is characterized in that, comprises that also each terminal receives self the step of the signaling reception attribute logging of various types of messages signaling to network side respectively.
4. session establishing method according to claim 3 is characterized in that, described signaling receives attribute and comprises that terminal is used to receive the IP address and the port numbers of various types of messages signaling.
5. according to claim 2 or 4 described session establishing methods, it is characterized in that described port is set to the User Datagram Protoco (UDP) port or is set to the transmission control protocol port.
6. session establishing method according to claim 3 is characterized in that, described terminal receives attribute and signaling with self medium and receives attribute logging and further comprise to the process of network side:
Terminal sends to network side with self medium reception attribute and signaling reception attributes encapsulation in the registration message signaling;
After network side receives the registration message signaling, extract the medium that comprise in the registration message signaling and receive attribute and signaling reception attribute; And
The medium that extract are received attribute and signaling to be received attribute and carries out corresponding stored with the identification information of this terminal respectively.
7. session establishing method according to claim 6 is characterized in that, by the Push to talk over Cellular server of network side the registration message signaling that includes medium reception attribute and signaling reception attribute that terminal sends to network side is handled.
8. session establishing method according to claim 3 is characterized in that,
Described terminal receives attribute with self medium and signaling receives attribute logging to network side at every turn when starting shooting or open the Push to talk over Cellular application program; Or
In start during state of activation, self medium are received attribute and signaling reception attribute logging to network side with periodic law ground.
9. session establishing method according to claim 3 is characterized in that, also comprises step:
Calling terminal sends and is used to ask terminal called to enter the invitation message signaling of session to the Push to talk over Cellular server;
Described server is transmitted to the terminal called reception according to the signaling reception attribute logging information of terminal called with the invitation message signaling; And
Feed back and successfully receive the message signaling to calling terminal;
After calling terminal receives the successful reception message signaling of described server feedback, send media data packet to the Push to talk over Cellular server.
10. session establishing method according to claim 9 is characterized in that, also comprises step:
Terminal called successfully receives the message signaling to described server feedback after receiving the next invitation message signaling of Push to talk over Cellular server forwards;
After described server receives and successfully receives the message signaling, be used to notify the current terminal called of calling terminal to enter the notification message signaling of session to the calling terminal transmission.
11. a session establishing method is used to handle the session foundation of Push-to-talk over Cellular system, it is characterized in that, comprises step:
The signaling that each terminal receives self the message signaling respectively receives attribute logging to network side; And
Specify common medium for all terminals in advance by network side and receive attribute;
The media data packet that the Push to talk over Cellular server of network side is sent calling terminal according to the signaling reception attribute logging information and the preassigned medium reception attribute of terminal called is transmitted to terminal called and receives.
12. session establishing method according to claim 11 is characterized in that,
Described signaling receives attribute and comprises that terminal is used to receive the IP address and the port numbers of various types of messages signaling;
Described medium receive attribute and comprise that terminal is used for the port numbers of receiving media data bag and the media data packet type that terminal can receive;
The IP address and the preassigned medium that comprise in the signaling reception attribute of described Push to talk over Cellular server according to terminal called receive port numbers that comprises in the attribute and the media data packet type that can receive, and the media data packet that calling terminal is sent is transmitted to the terminal called reception.
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| CNB2004100367958A CN100370872C (en) | 2004-04-30 | 2004-04-30 | Session establishing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101111008B (en) * | 2006-07-20 | 2011-01-05 | 华为技术有限公司 | Method, system and device for recording role information of honeycomb press key calling user |
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| KR20070108311A (en) * | 2005-11-15 | 2007-11-09 | 삼성전자주식회사 | Floor managing system, method and terminal apparatus for processing multimedia calling service in poc system |
| KR101225403B1 (en) * | 2005-12-12 | 2013-01-22 | 삼성전자주식회사 | Method and Terminal and system for A PoC Group Session Setup In PoC System |
| KR101002556B1 (en) * | 2005-12-12 | 2010-12-17 | 엘지전자 주식회사 | Method and apparatus for distinguishing data in session based communications |
| KR101251193B1 (en) * | 2006-06-09 | 2013-04-08 | 삼성전자주식회사 | METHOD AND SYSTEM FOR ESTABLISHING A GROUP SESSION IN PoC SYSTEM |
| CN101997856B (en) * | 2009-08-26 | 2014-12-10 | 中兴通讯股份有限公司 | Signaling message interaction method and application server |
| CN102394877A (en) * | 2011-09-13 | 2012-03-28 | 华为技术有限公司 | Method, server and system for establishing PTT (post, telegraphs and telephones) cluster call |
| CN104079537B (en) * | 2013-03-28 | 2018-03-23 | 联想(北京)有限公司 | A kind of method, apparatus and system that session connection is established based on transmission control protocol |
| CN103686620A (en) * | 2013-12-18 | 2014-03-26 | 北京佳讯飞鸿电气股份有限公司 | Method for preventing voices from being lost in group calling rapidly-building process |
| CN105743587A (en) * | 2016-03-31 | 2016-07-06 | 深圳市港湾船艇管理服务有限公司 | Underwater voice transceiver, overwater voice transceiver and underwater sound intercom system |
| CN107197449A (en) * | 2017-05-25 | 2017-09-22 | 深圳震有科技股份有限公司 | The PTT group call controlling methods and system of a kind of adaptive network change |
| CN110290140B (en) * | 2019-06-28 | 2021-09-24 | 腾讯科技（深圳）有限公司 | Multimedia data processing method and device, storage medium and electronic equipment |
| CN110958581B (en) * | 2019-12-10 | 2022-03-22 | 海能达通信股份有限公司 | Method, system and related equipment for transmitting media data |
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