CN103686618A - Method for triggering and establishing wideband multimedia cluster service - Google Patents
Method for triggering and establishing wideband multimedia cluster service Download PDFInfo
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Abstract
The invention discloses a method for triggering and establishing wideband multimedia cluster service. The method comprises the following steps: a cluster terminal requests to establish cluster group service by transmitting an SIP (Session Initiation Protocol) request message to a multimedia dispatcher control center; the multimedia dispatcher control center authenticates the service authority of the cluster terminal; when the authentication is accepted, the multimedia dispatcher control center requests to establish cluster group service session loading by transmitting the SIP request message to a core network; the core network establishes a downlink network channel for the cluster group service according to the received SIP request information, and confirms whether the cluster group service is successfully established by transmitting an SIP response message to the multimedia dispatcher control center; after receiving the SIP response message, the multimedia dispatcher control center confirms that the cluster group service is successfully established by transmitting the SIP response message to the cluster terminal. Through the adoption of the method, the wideband multiple cluster service can be initialized by the cluster terminal to a wideband multimedia cluster system.
Description
Technical field
The present invention relates to mobile communication technology, particularly relate to the method for initiating to set up wideband multimedia group service in group system.
Background technology
Group system is for meeting industry command scheduling demand exploitation, towards the private wireless communication system of multiple sector application, in public safety, communications and transportation, government utility, petrochemical industry, industry and commerce and the army market that has a wide range of applications.Now widely used group system is mostly based on 2G narrowband wireless communication technology, take and provide voice scheduling business as main, comprise: for meeting the special-purpose group system of the special exploitation of cluster command scheduling demand, as TETRA, iDEN etc., and the group system of developing based on public mobile communication system, as the GT800 based on GSM, GoTa based on CDMA etc.
Along with mobile communication system is constantly to broadband future development.Wide-band mobile communication system is to the future development of all-IP, and the flattening network architecture based on all-IP, when ip voice business is provided, provides the multimedia services such as numeral, image, audio frequency, video.The multimedia service of wide-band mobile communication system generally adopts session initiation protocol (Session Initiation Protocol, SIP) multimedia control agreement to realize, so that the fusion of different systems wide-band mobile communication system core net.Meanwhile, for the group system of Industry-oriented application, it is also more and more significant to the demand of broadband multimedia services.For example, public security group system requirement support image scene and video acquisition, multimedia data broadcast, video directing; Petroleum chemical industry needs monitoring remote video etc.Therefore, broadband multimedia cluster system becomes the focus of current broadband wireless access field development, and industry is also being puted forth effort the broadband multimedia cluster system of research based on different broadband wireless communication technique, realizes multimedia cluster scheduling.
Broadband multimedia cluster system structure based on wide-band mobile communication system exploitation as shown in Figure 1, mainly comprises: the chief components such as terminal, Access Network, core net, multimedia cluster scheduler subsystem.
Terminal comprises colony terminal and domestic consumer's terminal (standard wide-band mobile communication system terminal), is mainly user the miscellaneous services such as voice, data, image, video are provided in different application scene.Colony terminal need to increase PoC (Push to Talk, PTT) button on the basis of domestic consumer's terminal, and has PTT calling automatic hand-free pickup feature.Colony terminal has multiple different shape according to actual application scenarios, as handheld terminal, car-mounted terminal, fixed terminal etc.
Access Network is comprised of access device, is mainly responsible for transmission, reception and the RRM of wireless signal, transfer system signaling, user profile and business datum etc.In access device, need to add group service processing module, complete the management of wideband multimedia group service downlink radio resource, the group user realizing in same community is shared downlink radio resource.
Core net generally comprises mobility management apparatus, gateway device, policy charging rule function device and database server.Mobility management apparatus is used for realizing the chain of command functions such as user mobility management, Internet resources control, the security controls such as relevant authentication between network and user and key agreement have been comprised, the mobile management of user terminal, the resource management functions such as the foundation of sessions carry, modification and release; Gateway device be mainly responsible for business data flow mapping, copy and distribute, according to the business characteristic of user's request and quality of service requirement, initiate the foundation of service bearer, the route of packet and forwarding etc.; Policy charging rule function device is mainly responsible for providing dynamic QoS strategy and charging regulation etc.; Database server is responsible for subscription authentication control, managing user information, comprises user signing contract information management, user security information management.For realizing group service, database server in core net need to increase cluster user service unit, for storage cluster user profile, group user profile and authentication arithmetic and encryption key etc. relevant to group service, for providing cluster user, network equipment opens an account, the foundation of cancellation, authentication, group service mandate and charging.
Multimedia cluster scheduler subsystem generally comprises multimedia dispatching control centre, dispatching desk, security server, recording/video recording server, application server, and interconnection gateway etc.Multimedia dispatching control centre builds based on SIPServer, control centre as group service scheduling, complete unified session control and the scheduling of resource of voice scheduling, data dispatch and video dispatching, comprise foundation, safeguard and discharge various group service sessions, carry out right of speech management and scheduling.In addition, multimedia dispatching control centre is also responsible for the distribution function of cluster user management and business data flow.Dispatching desk provides operating platform for dispatcher or keeper, support dispatcher to a plurality of groups or in specific region movable personnel's work carry out command scheduling.Recording/video recording server has been used for storage and the inquiry of group system voice, data and video.Application server comprises the various application servers such as voice server, data server, video server, image intelligent Analysis server, for cluster user provides various sector applications.Interconnection gateway can be realized and the interconnecting of public switch telephone network (Public Switched Telephone Network, PSTN), cellular mobile communications networks (as GSM/TD-SCDMA/LTE etc.) and other group system (as TETRA/Gota/GT800 etc.).
At present, for the above-mentioned broadband multimedia cluster system based on wide-band mobile communication system exploitation, not yet propose a kind ofly to support colony terminal to initiate to set up the method for wideband multimedia group service.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of triggering to set up the method for wideband multimedia group service, and the method can realize colony terminal and initiate wideband multimedia group service to broadband multimedia cluster system.
In order to achieve the above object, the technical scheme that the present invention proposes is:
A method for wideband multimedia group service is set up in triggering, comprising:
Colony terminal is by sending sip request message to multimedia dispatching control centre, and cluster group service is set up in request;
Described multimedia dispatching control centre, according to described sip request message, carries out service authority authentication to described colony terminal; When described authentication by time, described multimedia dispatching control centre is by sending sip request message to core net, cluster group service sessions carry is set up in request;
Described core net is according to the described sip request message receiving, and for described cluster group service is set up the network side passage of down link, and by sending sip response message to described multimedia dispatching control centre, confirms that described cluster group service is successfully established;
Described multimedia dispatching control centre receives after described sip response message, by sending sip response message to described colony terminal, confirms that described cluster group service is successfully established.
In sum, the triggering method of the wideband multimedia group service that the present invention proposes, the use that utilizes Session Initiation Protocol to have is flexible, versatility good, be easy to the characteristic of expansion, based on Session Initiation Protocol, realize colony terminal and to broadband multimedia cluster system, initiate the Signalling exchange in the process of wideband multimedia group service, thereby make the present invention be applicable to the foundation of the wideband multimedia group service of the broadband multimedia cluster system based on different wide-band mobile communication system exploitations.
Accompanying drawing explanation
Fig. 1 is broadband multimedia cluster system network architecture diagram;
Fig. 2 is the schematic flow sheet of the embodiment of the present invention one.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
Core concept of the present invention is: consider that Session Initiation Protocol is used flexibly, versatility is good and be easy to extended attribute, the present invention will be based on Session Initiation Protocol, realize colony terminal and to broadband multimedia cluster system, initiate the process of wideband multimedia group service, so, can solve existing group system the problem with a large bandwidth and at a high rate with the wideband multimedia group service ensureing with high QoS cannot be provided.
Fig. 2 is the schematic flow sheet of the embodiment of the present invention one, and as shown in Figure 2, this embodiment mono-mainly comprises:
Particularly, for the ease of setting up cluster group service, in the sip request message that described colony terminal sends to described multimedia dispatching control centre, need to carry traffic type information, this type of service is used for identifying cluster group service type, as trunked call foundation, the right to apply for words etc., and when described type of service is trunked call while setting up type, in the header field item of described sip request message, will carry type of call, urgent sign, encryption identification and communication mode information.Wherein type of call is used for indicating voice group call service, visual group calling, voice individual calling, visual individual calling etc.; Whether urgent sign is urgent call for indicating; Whether encryption identification is used for indicating this time calling out and needs to encrypt; Communication mode is used for indicating this time to be called out as full-duplex communication or half-duplex operation.
Particularly, for the ease of setting up cluster group service sessions carry, in the sip request message that described multimedia dispatching control centre sends to core net, need to carry traffic type information, and when described traffic type information is trunked call while setting up type, in the header field item of this sip request message by carrying type of call, urgent sign, encryption identification, communication mode, precedence information, Media Stream synchronisation source, information and set up the required information of up-downgoing multimedia cluster sessions carry turn-on time lags.Wherein, precedence information can be determined according to the priority of urgent/non-emergent sign, service identification, business initiating terminal, group priority etc. are comprehensive; The turn-on time information of lagging sends the cycle of the access beep-page message that lags for identifying access device; Setting up the required information of up-downgoing multimedia cluster sessions carry specifically can comprise: business initiating terminal sign, group Radio Network Temporary Identifier, PLMN sign, mobility management apparatus identify, generally call sign, bearer types, call release time, encryption key etc.Group Radio Network Temporary Identifier is distributed by multimedia dispatching control centre, in wideband multimedia cluster group service process, access device employing group Radio Network Temporary Identifier carries out scrambling to descending trunking signal and group service data, user's employing group Radio Network Temporary Identifier descrambling trunking signal and the group service data of same group.
In this step, described colony terminal is carried out to the same existing system of concrete grammar of service authority authentication, do not repeat them here.
Further, when described authentication by time, described multimedia dispatching control centre, before sending described sip request message to core net, judges current group information corresponding to described cluster group service of whether preserving, if do not preserve, obtain described group message from database server.
In this step, for described cluster group service, set up the concrete grammar of the network side passage of down link, same existing system, does not repeat them here.
Particularly, in the sip response message that described core net sends to described multimedia dispatching control centre, will carry traffic type information, and when described traffic type information is trunked call while setting up type, in the header field item of described sip response message, carry type of call, urgent sign, encryption identification, communication mode, precedence information, Media Stream synchronisation source, turn-on time and set up the relevant information of up-downgoing multimedia cluster sessions carry lags.The relevant information of setting up up-downgoing multimedia cluster sessions carry specifically can comprise: business initiating terminal sign, PLMN sign, mobility management apparatus sign, group service session identification, beared information.Wherein, group service session identification is distributed by multimedia dispatching control centre, for indicating the session of ongoing wideband multimedia group service; Beared information comprises: the downlink user face IP address of the downlink bearing Tunnel Identifier of bearer types, cluster bearing identification, gateway, gateway etc.Bearer types is for identifying the carrying of voice, data and video class.
Further, after the described sip request message that described core net receives, before setting up the network side passage of described down link for described cluster group service, judge current group information corresponding to described cluster group service of whether preserving, if do not preserve, obtain described group information from database server.
Particularly, for the ease of terminal, know that described cluster group service is successfully established, in the described sip response message that described multimedia dispatching control centre sends to described colony terminal, can carry traffic type information, and when described traffic type information is trunked call while setting up type, in the header field item of described sip response message, can carry type of call, urgent sign, encryption identification, communication mode, precedence information, Media Stream synchronisation source and group service session label information.
So far, by step 201 ~ 204, realization is set up to the trigger process of wideband multimedia group service.
It should be noted that, in said process, the particular content of each item of information that each message is entrained, can be arranged according to concrete group system by those skilled in the art, as long as meet the needs that multimedia cluster business is set up, be not limited to the content providing in above-mentioned example.In addition, in order to ensure reliability of the present invention, in said process, the recipient of each message can feed back about receiving that the confirmation of this message is to the transmit leg of message after receiving message.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. a method for wideband multimedia group service is set up in triggering, it is characterized in that, comprising:
Colony terminal is by sending session initiation protocol sip request message to multimedia dispatching control centre, and cluster group service is set up in request;
Described multimedia dispatching control centre, according to described sip request message, carries out service authority authentication to described colony terminal; When described authentication by time, described multimedia dispatching control centre is by sending sip request message to core net, cluster group service sessions carry is set up in request;
Described core net is according to the described sip request message receiving, and for described cluster group service is set up the network side passage of down link, and by sending sip response message to described multimedia dispatching control centre, confirms that described cluster group service is successfully established;
Described multimedia dispatching control centre receives after described sip response message, by sending sip response message to described colony terminal, confirms that described cluster group service is successfully established.
2. method according to claim 1, it is characterized in that, described method further comprises: when described authentication is passed through, described multimedia dispatching control centre is before sending described sip request message to core net, judge current group information corresponding to described cluster group service of whether preserving, if do not preserve, obtain described group message from database server.
3. method according to claim 1, is characterized in that, described method further comprises:
After the described sip request message that described core net receives, before setting up the network side passage of described down link for described cluster group service, judge current group information corresponding to described cluster group service of whether preserving, if do not preserve, obtain described group information from database server.
4. method according to claim 1, it is characterized in that, in the sip request message that described colony terminal sends to described multimedia dispatching control centre, carry traffic type information, and when described type of service is trunked call while setting up type, in the header field item of described sip request message, carry type of call, urgent sign, encryption identification and communication mode information.
5. method according to claim 1, it is characterized in that, in the sip request message that described multimedia dispatching control centre sends to core net, carry traffic type information, and when described traffic type information is trunked call while setting up type, in the header field item of described sip request message, carry type of call, urgent sign, encryption identification, communication mode, precedence information, Media Stream synchronisation source, information and set up the required information of up-downgoing multimedia cluster sessions carry turn-on time lags.
6. method according to claim 1, it is characterized in that, the sip response message that described core net sends to described multimedia dispatching control centre carries traffic type information, and when described traffic type information is trunked call while setting up type, in the header field item of described sip response message, carry type of call, urgent sign, encryption identification, communication mode, precedence information, Media Stream synchronisation source, turn-on time and set up the relevant information of up-downgoing multimedia cluster sessions carry lags.
7. method according to claim 1, it is characterized in that, in the described sip response message that described multimedia dispatching control centre sends to described colony terminal, carry traffic type information, and when described traffic type information is trunked call while setting up type, in the header field item of described sip response message, carry type of call, urgent sign, encryption identification, communication mode, precedence information, Media Stream synchronisation source and group service session label information.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104821999A (en) * | 2015-04-16 | 2015-08-05 | 浙江工业大学 | Individual visual dispatching system |
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