CN102131150A - Multimedia message transmission method for TD-SCDMA (time division-synchronization code division multiple access) cluster communication system - Google Patents
Multimedia message transmission method for TD-SCDMA (time division-synchronization code division multiple access) cluster communication system Download PDFInfo
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- CN102131150A CN102131150A CN2011101037762A CN201110103776A CN102131150A CN 102131150 A CN102131150 A CN 102131150A CN 2011101037762 A CN2011101037762 A CN 2011101037762A CN 201110103776 A CN201110103776 A CN 201110103776A CN 102131150 A CN102131150 A CN 102131150A
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Abstract
The invention relates to a multimedia message transmission method for a TD-SCDMA (time division-synchronization code division multiple access) cluster communication system, which comprises steps as follows: a message center client, a wired dispatcher station or a wireless cluster terminal transmits a multimedia message to a multimedia message center in a POST mode; the multimedia message center inquires group user information in a DSS (dispatch subsystem), a Node-B performs multimedia message multicast on the group users in a cell at a fixed time interval within a set time, and the group users report respective receiving response after receiving the multimedia messages; and as for the terminal which does not report a receiving response, the multimedia message center transmits a notification message to the group users, and the group users having received the notification message manually acquire the multimedia messages. According to the invention, the multimedia messages can be transmitted and dispatched in the TD-SCDMA cluster communication system rapidly and effectively, and the end-to-end success rate of the multimedia messages can be effectively ensured.
Description
Technical field
The present invention relates to the communications field, more particularly, relate to a kind of multimedia message transmission method of TD-SCDMA trunked communication system.
Background technology
Trunked communication system (as shown in Figure 1) based on 3G (Third Generation) Moblie technology TD-SCDMA is that cellular telecommunication art is combined with professional dispatching communication system, adopts the communication mode of half-duplex and full duplex.The TD-SCDMA trunked communication system not only can be realized calling out fast connection, support group call, multicast call, can also carry various multimedia services (as video, picture, sound and literal etc.) and satisfy wireless data transmission at a high speed.Not only can be widely used in enterprises and institutions that commander, scheduling feature are had relatively high expectations based on the trunked communication system of the TD-SCDMA technology of China's independent research, also can be applied to special sectors such as government, public security, traffic police, the application space and the inter-industry competition ability of TD-SCDMA technology can be further expanded in these application, and advances the development of China's digital cluster communication.
For present digital clustering communication system, because the technical conditions of restriction itself, the ability and the forward direction development potentiality of its carrying high-speed multimedia business are poor.The main voice-over business of traditional trunked communication system, data and multimedia service have only accounted for very little ratio, and traditional trunked communication system does not adopt a kind of effective mechanism to realize the group transmission of multimedia service.
As 3GPP(third generation partner program) the TD-SCDMA wireless access technology of international standard can provide abundant mobile multi-media service.The TD-SCDMA mobile communication system realizes that the Multimedia Message transmission manner is varied, but with the MMS(multimedia messaging service, MMS) mode realizes that the transmission of Multimedia Message is one of effective and efficient manner the most.The transmission means of MMS is: transmitting terminal sends the MM(Multimedia Message in the mode of POST) to MMSC; MMSC sends by short message with PUSH over SMS(then) mode sends a notification message to the recipient, this message is a special short message normally, the inside comprises some accessory informations, as the position URL (URL(uniform resource locator)) of Multimedia Message, message reference number, Multimedia Message theme, content size etc.; Take out URL after the notified message of recipient, the GET(by standard obtains then) the request mode obtains Multimedia Message from MMSC.
Said method is used for group system can bring following problem: system to all user PUSH notification messages of group after, each sets up Traffic Channel with initiating the GET request per family, at this moment system loading will sharply increase, thereby the decline of wireless interface passband influences success rate end to end.And adopt this mechanism can not effectively embody the characteristic of group system shared resource.Therefore in group system, when needing to solve terminal and receiving group's Multimedia Message, the problem of sharing in success rate and system resource.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of multimedia message transmission method of TD-SCDMA trunked communication system, make the group user terminal can receive group's Multimedia Message at one time.
For achieving the above object, the present invention realizes in the TD-SCDMA trunked communication system, may further comprise the steps:
At Multimedia Message header portion encapsulation user group echo, colony terminal regularly carries out information interaction with trunking dispatching subsystem, Multimedia Message center MMSC receives the Multimedia Message that colony terminal sends, and sends Multimedia Message with multicast mode at descending group service channel T-PDCH according to user's group echo; Node-B carries out the multicast of Multimedia Message at interval with regular time in the time of default; After group user receives Multimedia Message, take up shared control channel T-PUCCH in the mode of seizing at random and report reception separately to respond, and in response, report the IMSI(international mobile subscriber identity of each self terminal); For surpassing maximum response time, do not report the colony terminal that receives response, Multimedia Message center MMSC sends a notification message to these group user, and these group user are extracted Multimedia Message with manual mode from Multimedia Message center MMSC.
The TD-SCDMA trunked communication system is in order to guarantee the transmission success rate of Multimedia Message, implemented a kind of blind passage mechanism, promptly NODE-B carries out the multicast of multimedia messaging service, MMS at interval with regular time to sub-district, group user place on descending group service channel T-PDCH in the time of setting.The TD-SCDMA trunked communication system can set in advance initial a descending multicast time and a time interval, draws accurate value by the data after the networking and time are distributed to add up then.
Receive response if there is group user not report in setting-up time, then Multimedia Message center MMSC sends a notification message and does not receive the group user that responds to reporting, and controls it and extracts Multimedia Message in manual mode.And Multimedia Message center MMSC can preserve Multimedia Message in the storage term of validity that the TD-SCDMA trunked communication system is set.If all groups are with reporting response per family, maybe, the storage term of validity that surpasses the setting of TD-SCDMA trunked communication system receives response, then Multimedia Message center MMSC deletion Multimedia Message when still having group user not report.The present invention has adopted in cell downlink group service channel T-PDCH multicast multimedia message, and the mode of group user monitor channel makes sub-district, group user place only need a shared channel, has effectively embodied the characteristic of trunked communication system shared resource.And the present invention has taked blind passage mechanism, in the term of validity of Multimedia Message storage, when the state of colony terminal transfers the spare time to when busy, by off-mode to open state, by all receiving Multimedia Message under the various access situations that lag such as signal blind zone entering signal zone.Colony terminal for do not receive message in the time at multicast still can obtain important message by the mode of manual extraction message, effectively guarantees the transmission success rate of end-to-end message.
Description of drawings
Fig. 1 TD-SCDMA trunked communication system schematic network structure;
Fig. 2 TD-SCDMA trunking communication Multimedia Messaging Service system construction drawing;
Fig. 3 user organizes Multimedia Message form schematic diagram;
Fig. 4 user that has the right initiates the business process map that group message sends to portable terminal from the message center client;
Fig. 5 sends a notification message above MMSC (Multimedia Message center) behind the setting-up time and extracts the multimedia messaging service, MMS flow chart.
Embodiment
In order on existing TD-SCDMA technology, to realize the cluster command dispatch communication, support PUSH to X(X to represent voice, image, video and data) etc. novel cluster communication service, the TD-SCDMA trunked communication system increases scheduling switching domain (DS territory), isolates coexistence with existing business; Network side increases trunking dispatching subsystem (DSS); In order to realize colony dispatching service, the wireless access side increases scheduling controller PDC, and air interface partly increases by four physical channels: up Dedicated Traffic Channel (T-PUCH), descending group service channel (T-PDCH), up shared control channel (T-PUCCH), descending shared control signal channel (T-PDCCH).Wherein, trunking dispatching subsystem DSS comprises dispatch server PDS, deployment position register PHR and three parts of dispatching desk acting server (dispatching desk server DAS and dispatching client DAC).Wherein, dispatch server PDS is the master control point of group service, finishes the processing of colony dispatching, comprises the discriminating cluster user, sets up various group services etc.; Deployment position register PHR finishes user's group service authentication, mandate, charging, position and upgrades and the dynamic group management function, and cluster group, user's service handling is provided for cluster user; Dispatching desk server DAS is the group management platform, carries out the acting server of service management, group's scheduling operation, provides the dispatching management service with dispatching desk/turnkey console for group; The DAC client can sign in to the DAS server site, by DAS(dispatching desk server) with the PDS(dispatch server), PHR(deployment position register) mutual, the operation dispatching bookkeeping; Dispatching desk controller PDC finishes dispatching services control, power control, supports the TD-SCDMA colony terminal to switch, compile and distribute the cluster data flow under difference covers, dispatching desk controller PDC can provide the interface of multiple standard to link to each other with trunking dispatching subsystem with switching subsystem, packet switching subsystem, satisfies the demand of the miscellaneous service of terminal.The schematic network structure of concrete TD-SCDMA trunked communication system as shown in Figure 1.
Fig. 2 is for realizing the related network entity of TD-SCDMA trunked communication system Multimedia Message transmission.Mainly comprise four parts: wireless access system comprises Vehicle mounted station/hand-held station, base station (Node-B) and base station controller (RNC/PDC); TD-SCDMA Digital Clustering core net comprises packet subsystem (GGSN, SGSN), colony dispatching service system (PDS, PHR, DAS); WAP gateway, MMSC (Multimedia Message center); Dispatch and Command Center of group comprises dispatching desk, turnkey console, fixed station and other auxiliary equipment.
The user organizes the Multimedia Message form as shown in Figure 3, comprising: the message sequence number, (byte 1 ~ 2), user's group echo length (byte 3), user's group echo (variable-length, byte 4 ~ m), coded system (m ~ m+1), message content (m+1 ~ n).The size of m, n has been represented the length of user's group echo and message content respectively, and its value can be determined according to the actual conditions of network.
The key of this multimedia messaging service, MMS is to comprise user's group echo in the information that transmits on the interface aloft when on multicast channel or channel shared by multiple users one group of user being sent message.
Below in conjunction with drawings and Examples technical scheme of the present invention is elaborated.
In the present embodiment, be example, describe the transmission mechanism that is applicable to TD-SCDMA trunked communication system Multimedia Message in detail with the operation flow of user of having the right from message center client initiation group message to terminal.Idiographic flow may further comprise the steps as shown in Figure 4:
Colony terminal regularly carries out the mutual of information with trunking dispatching subsystem, comprises terminal capability negotiation, authentication, subdistrict position renewal, current state renewal, user's group echo information checking etc.Message center client, wired dispatching desk or wireless colony terminal are carried out the encapsulation of agreement to Multimedia Message, and comprise user's group echo at header portion, and wherein the user organizes message format as shown in Figure 3.
Step 401: message center client or dispatching desk submit to the user to organize the Multimedia Message order to Multimedia Message center MMSC, and command context comprises user's group echo and message to be sent (may be picture, text or other multimedia types);
Step 402: Multimedia Message center MMSC sends response to client.If Multimedia Message is successfully received by Multimedia Message center MMSC, then comprise message identifier message_id number of Multimedia Message distribution for this reason in the response message; Otherwise, should comprise error message in the response;
Step 403: after Multimedia Message center MMSC receives this Multimedia Message, in the colony dispatching service system, inquire about administration group user profile and the current GGSN/SGSN(Gateway GPRS Support Node/Serving GPRS Support Node of group user) number according to group echo;
Step 404:GGSN/SGSN receives after the user organizes message send command, inquires about the sending zone that this user organizes message according to user's group echo.Generally speaking, order comprises the transmit leg location parameter, and SGSN need combine this parameter and user's group echo the sending zone of inquiring user group message.After the sending zone inquiry is finished, send the user according to Query Result to the dispatching client PDC of management objectives sub-district and organize message transmission instruction, command content comprises user's group echo and target cell information;
Step 405: dispatching client PDC notice Node-B sends the user and organizes message on descending group service channel T-PDCH, comprise in the notice that user's group echo and message marking and message send employed Traffic Channel;
Step 406:Node-B is periodicity multicast user groups message informing on descending group service channel T-PDCH;
Step 407: after receiving side terminal receives Multimedia Message, send the reception response by the mode of seizing up shared control channel T-PUCCH at random to Multimedia Message center MMSC, in response, will report the international mobile subscriber identity IMSI of this user terminal;
Step 408: Multimedia Message center MMSC is to message center client or the response of dispatching desk report of user group message sink;
Step 409: receiving side terminal sends reading report message to MMSC;
Step 410:MMSC sends to the message center client with reading report.
After surpassing the time of setting, carry out following steps:
Fig. 5 is a business process map of notifying terminal use's manual extraction Multimedia Message above Multimedia Message center MMSC after the time of setting, may further comprise the steps:
Step 501: surpass and set descending multicast after the time, the reception response condition of MMSC inquiry group reporting of user;
Step 502: judge whether that all groups receive response with reporting per family, if then execution in step 507; Otherwise, execution in step 503;
Step 503:MMSC inquires about in trunking dispatching subsystem and does not report the information of terminal user that receives response;
Step 504: if not all groups receive response with reporting per family, according to the user profile that inquires, MMSC sends a notification message to the colony terminal that reports the reception response in the mode of designated cell with PUSH over SMS;
Step 505: colony terminal receives behind the notification message with GET mode manual extraction Multimedia Message;
Step 506: receiving terminal reports to MMSC Multimedia Message center and receives response;
Step 507: after all reporting of user received response, MMSC deletion Multimedia Message in Multimedia Message center also reported all groups of transmitting terminal with receiving per family.
The above only is to send the case study on implementation of Multimedia Message to colony terminal from the message center client, in other embodiments, for as also implementing same multimedia message transmission method to colony terminal, colony terminal to using (dispatching desk), guarantee that success rate and system resource that message sends are shared by colony terminal.
Certainly, the cited execution mode of the present invention as mentioned above, but the case that described content just adopts for the ease of understanding the present invention is not in order to limit the present invention.The present invention can also have other numerous embodiments; under the situation that does not deviate from spirit of the present invention and essence; those of ordinary skill in the art can make various corresponding changes and modification according to the present invention, but these corresponding changes and distortion all should belong to protection range of the presently claimed invention.
Claims (4)
1. the multimedia message transmission method of a TD-SCDMA trunked communication system is characterized in that, may further comprise the steps: at Multimedia Message header portion encapsulation user group echo, colony terminal regularly carries out information interaction with trunking dispatching subsystem; Multimedia Message center MMSC receives the Multimedia Message that colony terminal sends, and sends Multimedia Message in trunking dispatching subsystem DSS inquiry group user profile and with multicast mode at descending group service channel T-PDCH according to user's group echo; Dispatching client PDC informing base station Node-B sends Multimedia Message on descending group service channel T-PDCH; Node-B carries out the multicast of Multimedia Message at interval with regular time in the time of setting; After group user receives Multimedia Message, take up shared control channel T-PUCCH in the mode of seizing at random and report reception separately to respond, and in this response, report the international mobile subscriber identity IMSI of this user terminal; If surpass maximum response time, do not report the terminal that receives response, Multimedia Message center MMSC sends a notification message to the group user, and this group user is extracted Multimedia Message with manual mode from Multimedia Message center MMSC.
2. multimedia message transmission method according to claim 1, it is characterized in that: a group can only have a user to carry out uplink traffic transmission at synchronization, have only the up Dedicated Traffic Channel T-PUCH of this sub-district, user place to be in state of activation, the up Dedicated Traffic Channel of other residing sub-districts of group user of this group is in silent status.
3. according to claims 1 described multimedia message transmission method, it is characterized in that: colony terminal and trunking dispatching subsystem mutual information comprise that terminal capability negotiation, authentication, subdistrict position are upgraded, current state is upgraded, user's group echo information checking.
4. according to claims 1 described multimedia message transmission method, it is characterized in that: the TD-SCDMA trunked communication system need not to set up Traffic Channel respectively for all users of this sub-district, only needs to monitor descending group service channel T-PDCH.
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| CN106332025A (en) * | 2016-09-18 | 2017-01-11 | 海能达通信股份有限公司 | Realization method of multimedia short message in trunked system, core network, and resource server |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7693534B1 (en) * | 2006-12-05 | 2010-04-06 | Sprint Spectrum L.P. | Method and apparatus for dynamic selection of complete or referenced group indication when initiating a group communication session |
| CN101860973A (en) * | 2010-06-30 | 2010-10-13 | 哈尔滨工业大学 | Broadband multimedia cluster architecture system based on TD-LTE (Time Division Long Term Evolution) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7693534B1 (en) * | 2006-12-05 | 2010-04-06 | Sprint Spectrum L.P. | Method and apparatus for dynamic selection of complete or referenced group indication when initiating a group communication session |
| CN101860973A (en) * | 2010-06-30 | 2010-10-13 | 哈尔滨工业大学 | Broadband multimedia cluster architecture system based on TD-LTE (Time Division Long Term Evolution) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106332025A (en) * | 2016-09-18 | 2017-01-11 | 海能达通信股份有限公司 | Realization method of multimedia short message in trunked system, core network, and resource server |
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