CN103139718A - Push to talk over cellular (PoC) time delay optimizing processing method and device - Google Patents
Push to talk over cellular (PoC) time delay optimizing processing method and device Download PDFInfo
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- CN103139718A CN103139718A CN2013100965734A CN201310096573A CN103139718A CN 103139718 A CN103139718 A CN 103139718A CN 2013100965734 A CN2013100965734 A CN 2013100965734A CN 201310096573 A CN201310096573 A CN 201310096573A CN 103139718 A CN103139718 A CN 103139718A
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Abstract
The invention discloses a push to talk over cellular (PoC) time delay optimizing processing method and a device. Establishing time of radio access bearer (RAB) and processing time of session initiation protocol (SIP) are shortened through one step of directly sending RAB allocation request messages through a service GPRS supporting node (SGSN) to a radio network controller (RNC), another step of directly sending SIPINVITE request response messages to user equipment (UE) of a calling party through the SGSN and the like. An obtaining unit, a judging unit and a sending unit are arranged in an SGSN device. The SGSN device obtains the state of a called party and directly sends PoC session speaking right information to the calling party, and the time of obtaining the speaking right by the calling party is shortened. Consequently, the time delay of the first establishment of a PoC session is reduced, and the use satisfaction rate of users is improved.
Description
Technical field
The present invention relates to the mobile communication technology field, be specifically related to method and device that a kind of PoC time delay optimization is processed.
Background technology
PoC(Push to Talk over Cellular, the radio honeycomb PTT) refer to the carrying of movement-based cellular network packet domain, utilize VoIP(Voice over IP, ip voice) technology realizes the half-duplex voice business of similar trunking communication, can support the functions such as session one to one, one-to-many cluster conversation, state present in real time, group list management.Its main characteristics are embodied in: the user is by special PTT(Push To Talk, PTT) button, the right to speak in the application session, after obtaining the floor and being pointed out accordingly, the user can begin speech.In half-duplex session, a side is when speech, and other members can only answer, and can not talk.
SIP(Session Initiation Protocol, conversation initialized protocol) be a kind of application layer signaling protocol of realizing real time communication in IP based network, function is controlled in the foundation, processing, termination etc. that can be used for PoC session.
RNC(Radio Network Controller, radio network controller) an important network element be UTRAN(UMTS Terrestrial Radio Access Network, UMTS Terrestrial radio access network), RNC and core net are by the Iu interface inter-link.Be used for providing access control, switching controls, power is controlled, packet scheduling, system information broadcast, random access and RAB(Radio Access Bearer, RAB), RB(Radio Bearer, radio bearer) management, UTRAN safety function, the functions such as database processing and UE location.
SGSN(Serving GPRS Supporting Node, GPRS serving GPRS support node) be the distinctive equipment of packet domain, being connected of RNS and core net is provided.Major function comprises: Network access control (as registration, authentication, mandate etc.); Route Selection and forwarding; Mobile management; Session management (as entering to exhale to implement paging to what call out); Keep UE(User Equipment, user terminal) with GPRS(General Packet Radio Service, GPRS) logic between network connects; Be responsible for the service data (as the collection of charge information) of acquisition system and with the interface capability of other network elements etc.
GGSN(Gateway GPRS Supporting Node, GGSN) be the distinctive equipment of packet domain, be connected with SGSN by gn interface, be connected with outer data network by the Gi interface, provide packet in UMTS(Universal Mobile Telecommunications System, universal mobile telecommunications system) route and encapsulation between network and external data network.Major function is the interface of realization and outer data network; Maintaining routing list is realized the forwarding and the routing function that divide into groups; Realization to the filtration of grouped data and with interface capability of other network elements etc.
For grouping user, when each UE start, UE can automatically complete RRC and set up, PS(Packet Switched, packet switching) territory adheres to and completes registration at SGSN, PDP(Packet Data Protocol) foundation of upper style of writing.If do not have data service this moment, UE will be in the IDLE pattern so, wait for caller or be exhaled.
Concerning the UE that is in the IDLE pattern, if the PTT key is pressed in caller, the PS first territory session establishment time delay of PoC mainly comprises three aspects: the one, RRC setup delay; The 2nd, RAB setup delay (comprising the PDP Context initial activation); The 3rd, SIP processing delay.The secondary activating that carries out again PDP Context after the SIP signaling is built up can transmit corresponding session control and media.
Experience angle from the user, the time that obtains the floor is shorter, be that session establishment time delay is less, the user is more satisfied, for PoC user, therefore the important indicator that to require session time delay first to be not more than 1.6 seconds users be satisfaction, should reduce the existing network session establishment time delay as far as possible.
Summary of the invention
Given this, the invention provides method and device that a kind of PoC time delay optimization is processed, the time delay of setting up to reduce PoC session improves user's satisfaction rate.
In order to reach the purpose that reduces session establishment time delay, the technical solution used in the present invention is: a kind of method that PoC time delay optimization is processed comprises that the foundation of RAB and SIP process;
Wherein, described RAB set up as follows:
SGSN obtains the initial service request message of PoC;
According to the initial service request message of PoC, SGSN directly sends the RAB allocation request message to RNC;
Described SIP processes as follows:
SGSN obtains called UE relevant information and the session information at the PoC server registration;
SGSN directly sends SIP INVITE request response to calling UE;
Calling UE obtains right of speech.
More specifically, the foundation of RAB also comprises the steps:
In view of the present invention that achieves the above object also provides a kind of PoC time delay optimization processing unit, comprise calling/called UE device, SGSN device and the PoC server provide wireless network to be connected with core net is provided; Described SGSN device comprises acquiring unit, identifying unit and transmitting element; Wherein, described acquiring unit is used for after RRC foundation is completed, and receives grouping initial message type of service before RAB sets up; Described identifying unit is used for judging whether the initial message type of service that receives is the PoC service type; Described transmitting element is used for SGSN and directly sends the RAB allocation request message to RNC.
Further, the SGSN device also comprises called party information acquiring unit, the INVITE request direct transmitting element of response and right of speech message feedback unit; Wherein, described called party information acquiring unit is used for obtaining the called party information in the called UE of PoC server registration, creates the information of called PoC session; The direct transmitting element of INVITE request response is used for the log-on message according to the PoC server, sends the right of speech acquired information to calling UE; Right of speech message feedback unit is used for sending the right of speech grant information to the PoC server.
Particularly, calling/called UE device comprises that PoC service message sending unit and RB set up receiving element, and wherein said PoC service message sending unit is used for Data Identification signaling and PDP context activation request message that the PTT button is sent; RB sets up receiving element, is used for receiving the beep-page message from PoC session.
Compared with prior art, the present invention has following beneficial effect: comprise PoC service type and PDP context activation request by the initial directly pass-along message of UE, SGSN directly sends the RAB assignment request information to RNC, has reduced conventional Packet Service flow process information, has shortened the time that RAB sets up; Obtain called subscriber condition by the SGSN device unit and directly send PoC session right of speech information to caller, shortened caller and obtained the time of right of speech, thereby reduced the time delay that PoC session is set up first, improved the satisfaction rate that the user uses.
Description of drawings
Fig. 1 is the PoC session establishment time delay flow chart first of prior art;
Fig. 2 is the embodiment of the present invention PoC flow chart of RAB optimization process during session establishment first;
Fig. 3 is the embodiment of the present invention PoC flow chart of caller right of speech optimization process during session establishment first;
Fig. 4 is embodiment of the present invention PoC session establishment time delay flow chart first;
Fig. 5 is embodiment of the present invention SGSN installation drawing;
Fig. 6 is another embodiment of the present invention SGSN installation drawing;
Fig. 7 is embodiment of the present invention UE structural representation.
Embodiment
For further illustrating the embodiment of the present invention and technical scheme, the below provides specific embodiment and is described with reference to the accompanying drawings.
For the time delay that PoC session is set up, the RRC setup delay depends on existing fixed network, and the space of optimization is less.The RAB setup delay as shown in Figure 1, comprise GMM(GPRS Mobility Management, GPRS Mobility Management) service request, authentication request, Authentication Response, safe mode instruction, activate PDP Context, the processes such as RAB foundation are carried out necessary optimization process to these processes, can reduce the time delay that RAB sets up.
As shown in Figure 2, the present embodiment is the method that a kind of PoC time delay optimization of the present invention is processed, and comprising:
Step 201:SGSN obtains caller grouping initial message type of service relevant information and PDP Context initial activation message request;
Above-mentioned SGSN obtains the mode of caller blocking message type of service, by obtaining in the initial service request message transmission of completing after RRC connects foundation.For distinguishing other business, it is PoC service that the UE client identifies this business by the corresponding coding of PTT button transmission.
The acquisition of above-mentioned PDP Context initial activation message can be carried when the initial service request message is initiated by the UE terminal, also can be used independent message to send after initial service is initiated by the UE terminal, and the embodiment of the present invention is not construed as limiting this.
Step 202: analyze the grouping initial message type that judgement obtains;
Process for the PDP Context initial activation, SGSN can receive multiple grouping initial message type after RRC foundation is completed, judge whether received grouping initial message type is the PoC service type, if it is carry out by step 203, if not general Packet Service type signaling process execution routinely.
Step 203: send the RAB allocation request message;
If PoC service, SGSN directly sends the indication of RAB allocation request message to RNC, thereby reduces the signaling processes such as the performed authentication of conventional signaling and safety.
Further, another embodiment as shown in Figure 3, a kind of method that the present invention also provides PoC caller right of speech time delay optimization to process is mainly to shorten the SIP processing delay, comprising:
Step 301: obtain the called UE session information the server registration user;
The acquisition of the information of above-mentioned called UE user conversation can obtain by at SGSN, acquiring unit being set.SGSN user profile acquiring unit, can obtain called UE in the presentation information of presence server storage by gn interface or self defined interface, and registered user's PoC service setting, be automatic-answering back device setting, manual answering setting or interruption-free setting as the user answer pattern, thereby registered user's presentation information is carried out unified management with replying to arrange.
Step 302:SGSN directly sends SIP INVITE request response to calling UE;
The user's presentation information that obtains according to above-mentioned SGSN and reply configuration information, the SIP INVITE request message that SGSN can directly send calling UE is replied, thereby make SIP INVITE need not pass through to arrive the PoC server after a plurality of nodes such as SGSN, GGSN, sip agent, make according to called subscriber's current state information through the PoC server again and replying, and then reduced time delay for the acquisition of caller right of speech.
Step 303: send the right of speech feedback message to the PoC server;
SGSN should feed back to the PoC server to the right of speech control information after SIP INVITE request message is made the right of speech response message, and its internal information of PoC server update is stored current right of speech information, and initiates paging to called UE.
By above-mentioned implementation method, reduced to a certain extent the PoC session setup delay, its overall time delay optimization flow process is as shown in Figure 4.Compare Fig. 1, the time delay minimizing comprises two aspects: the one, RAB setup delay reduces, and the 2nd, SIP processing delay reduces, thereby has reduced to obtain the overall time delay of caller right of speech.
As shown in Figure 5, the embodiment of the present invention also provides a kind of SGSN device, comprising:
Acquiring unit 501 is for the initial message that obtains the calling subscriber;
Analysis and processing unit 502 is used for checking whether the initial message type of service of acquisition is PoC service;
Transmitting element 503 is used for sending the order of RAB allocation request message to being that the initial message type of service is the grouping of PoC service.
Further, as shown in Figure 6, the embodiment of the present invention also provides another kind of SGSN device, comprising:
Called party information acquiring unit 601 is used for obtaining from PoC server and presence server called party information, answer-mode and the state of called UE, creates the information of called PoC session.
The direct transmitting element 602 of INVITE request response according to the called subscriber answer pattern and the state that obtain, directly sends SIP 200 OK or SIP 487 refusal request messages through RNC to caller.
Right of speech message feedback unit 603 is used for sending to the PoC server right of speech information of current sessions, and the PoC server is stored according to the feedback information of receiving and upgraded called right of speech state.
As shown in Figure 7, the embodiment of the present invention also provides a kind of UE terminal, comprising:
The PoC service message sending unit is used for sending corresponding Data Identification signaling and PDP context activation request message;
RB sets up receiving element, is used for receiving the RAB instruction message from SGSN;
The above is the preferred embodiments of the present invention, can help the technical staff to understand thinking of the present invention and method, is not limited to the present invention.In the situation that do not deviate from spirit of the present invention and essence thereof, those skilled in the art can carry out various modifications and distortion to the present invention, but these corresponding changes and distortion all belong to claim protection range of the present invention.
Claims (6)
1. the method that the PoC time delay optimization is processed, is characterized in that: comprise that the foundation of RAB and SIP process;
Wherein, described RAB set up as follows:
SGSN obtains the initial service request message of PoC;
According to the initial service request message of PoC, SGSN directly sends the RAB allocation request message to RNC;
Described SIP processes as follows:
SGSN obtains called UE relevant information and the session information at the PoC server registration;
SGSN directly sends SIP INVITE request response to calling UE;
Calling UE obtains right of speech.
2. a kind of method processed of PoC time delay optimization according to claim 1, it is characterized in that: described initial service request message according to PoC, SGSN directly send the RAB allocation request message to RNC, comprise the steps:
Step 201 according to the initial service request message of PoC, is obtained grouping initial message type of service and PDP Context initial activation request message;
Step 202 analyzes whether judgement grouping initial message type is the PoC service type, and if it is execution in step 203, if not general Packet Service type signaling process execution routinely;
Step 203, SGSN directly sends the RAB allocation request message to RNC.
3. a kind of method processed of PoC time delay optimization according to claim 1, it is characterized in that: when described SGSN directly sends SIP INVITE request response to calling UE, SGSN feeds back to the PoC server with the right of speech control information, and PoC server update internal information is also stored current right of speech control information.
4. PoC time delay optimization processing unit comprises calling/called UE device, the SGSN device and the PoC server that provide wireless network to be connected with core net is provided, and it is characterized in that: described SGSN device comprises acquiring unit, identifying unit and transmitting element; Wherein, described acquiring unit is used for after RRC foundation is completed, and receives grouping initial message type of service before RAB sets up; Described identifying unit is used for judging whether the initial message type of service that receives is the PoC service type; Described transmitting element is used for SGSN and directly sends the RAB allocation request message to RNC.
5. a kind of PoC time delay optimization processing unit according to claim 4 is characterized in that: described SGSN device also comprises called party information acquiring unit, the INVITE request direct transmitting element of response and right of speech message feedback unit; Wherein, described called party information acquiring unit is used for obtaining the called party information in the called UE of PoC server registration, creates the information of called PoC session; The direct transmitting element of INVITE request response is used for the log-on message according to the PoC server, sends the right of speech acquired information to calling UE; Right of speech message feedback unit is used for sending the right of speech grant information to the PoC server.
6. a kind of PoC time delay optimization processing unit according to claim 4, it is characterized in that: described calling/called UE device comprises that PoC service message sending unit and RB set up receiving element, wherein said PoC service message sending unit is used for Data Identification signaling and PDP context activation request message that the PTT button is sent; RB sets up receiving element, is used for receiving the beep-page message from PoC session.
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| CN110753360A (en) * | 2019-10-17 | 2020-02-04 | 中国联合网络通信集团有限公司 | Time delay optimization method and device |
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| RU2755529C1 (en) * | 2021-02-01 | 2021-09-17 | Даурен Муратович Айдарханов | Method for establishing session of group packet voice communication over data transmission networks |
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