CN103002404A - DMR (Digital Mobile Radio) base station, radio access network and broadband multimedia trunked communication system - Google Patents
DMR (Digital Mobile Radio) base station, radio access network and broadband multimedia trunked communication system Download PDFInfo
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Abstract
The embodiment of the invention discloses a DMR (Digital Mobile Radio) base station, a radio access network and a broadband multimedia trunked communication system. The DMR base station comprises at least a DMR-CHU (DMR Channel Unit), an MSU (Medium-rate Service Unit) and a RANC (Radio Access Network Controller) all of which are applied to the broadband multimedia trunked communication system, wherein the DMR-CHU and the MSU occupy different channel resources; the DMR-CHU and the RANC communicate with each other and forward a service control signaling and DMR narrowband data to the RANC and/or a terminal; a medium-rate service transmission channel is built between the MSU and the RANC to forward the medium-rate service data to the RANC and/or the terminal; a medium-rate service transmission channel is built by the RANC to forward the medium-rate service data to the MSU and/or an SCC (Switching Control Center), allocate DMR channels and forward the service control signaling and the DMR narrowband data to the DMR-CHU and/or the SCC. According to the embodiment of the invention, the conventional DMR base station can be enlarged; and the enlarged DMR base station not only can support DMR narrowband services, but also can support the medium-rate services.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly relate to a kind of DMR base station, wireless access network and wideband multimedia trunked communication system.
Background technology
Trunked communication system is a kind of command scheduling mobile communication system of special use, is mainly used in professional moving communicating field.Different with common mobile communication, the characteristics of trunking communication maximum are, shared resource, contribution, shared channel equipment, the wireless communication system with multipurpose service and high-effect command scheduling function.The trunked communication system Speech Communication adopts PTT (Push To Talk) button, continues in a mode that pushes to talk, and called need not can answering by off-hook, and the speed that continues, and can support the function such as group call.
At present, trunking communicating technology mainly comprises the types such as Tetra (Terrestrial trunked radio), iDEN (integrated digital enhanced network) and DMR (digital mobile radio).Along with the development of the communication technology and the application of new technology, trunking communicating technology will be broadband to data, Directional Extension and the extension of professional variation, terminal multimode.
Wherein, DMR is a kind of narrow-band digital wireless communication technology that realizes low cost, low complex degree, low-power consumption and highly effective.Based on 12.5KHz channel width, adopt constant enveloped modulation mode and advanced channel coding/decoding technology and voice encoding/decoding technology; The transmission rate of single carrier continuous data is 9.6kbit/s; Cover based on the Da Qu system, can greatly reduce system synthesis construction cost and following maintenance cost.
DMR is the narrow-band digital group system, supports the DMR narrow band service, can't support medium-rate professional, as, video data is transmitted.And following trunked communication system all can concentrate on the professional aspect of medium-rate to most business demand, therefore, how to realize in existing DMR trunked communication system that medium-rate is professional, make existing DMR trunked communication system not only can support original DMR narrow band service, can also support the medium-rate business to become a current technical problem that needs to be resolved hurrily.
Summary of the invention
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of DMR base station, wireless access network and wideband multimedia trunked communication system, so that existing DMR base station is expanded, make the DMR base station after the expansion not only can support original DMR narrow band service, can also support medium-rate professional.
The embodiment of the invention discloses following technical scheme:
A kind of digital mobile radio DMR base station, be applied in the broadband multimedia cluster system, comprise: at least one DMR Channel Elements DMR-CHU, a medium-rate business unit MSU and a wireless access net controller RANC, wherein, described DMR-CHU takies different channel resources with described MSU;
Described at least one DMR-CHU, be used for described RANC between communicate by letter, be that the DMR channel of terminal distribution is transmitted uplink service control signal and DMR narrow band data to described RANC at RANC, and downlink business control signal and DMR narrow band data are handed down to terminal;
Described MSU is used for setting up the medium-rate service transmission channels with described RANC, transmits up medium-rate business datum to described RANC in described medium-rate service transmission channels, and descending medium-rate business datum is handed down to each terminal;
Described RANC is used for setting up the medium-rate service transmission channels with described MSU, and on described medium-rate service transmission channels, the descending medium-rate business datum that SCC is sent is transmitted to described MSU; And the up medium-rate business datum that MSU is transmitted is transmitted to SCC; And communicate by letter with described DMR-CHU, be each terminal distribution DMR channel, on described DMR channel, downlink business control signal and DMR narrow band data that SCC is sent are transmitted to described DMR-CHU, and uplink service control signal and DMR narrow band data that DMR-CHU is sent are transmitted to SCC.
Described business control signaling comprises medium-rate business control signaling and DMR standard control signal.
Preferably, adopt general packet wireless service tunnel protocol GTP protocol forward medium-rate business datum between described MSU and the described RANC.
Preferably, described MSU comprises:
The first processing unit, the up medium-rate business datum that is used for that terminal is uploaded is carried out data according to the GTP agreement and is processed;
The first forwarded upstream unit, the up medium-rate business datum that is used for after will processing on the described medium-rate service transmission channels is transmitted to described RANC.
A kind of wireless access network is applied in the broadband multimedia cluster system, comprises the DMR base station that at least one is above-mentioned.
A kind of wideband multimedia trunked communication system comprises mode mobile terminal, the wireless access network RAN that at least one is above-mentioned, a switching control center SCC and at least one dispatching desk DC that at least one supports DMR narrow band service and medium-rate business.
Preferably, the Session initiation Protocol SIP according to expansion realizes user service registration and calls out control between described RAN and the described SCC.
Preferably, the diameter agreement according to expansion realizes access authentication and user data synchronization between described RAN and the described SCC.
As can be seen from the above-described embodiment, in existing DMR base station, increase the medium-rate business unit, and, take different channel resources between the DMR-CHU in the medium-rate business unit that increases and the existing DMR base station, make the DMR base station of expansion not only can support the DMR narrow band service, can also further support medium-rate professional.In addition, the function of the DMR-CHU expansion transmission medium-rate business control signaling in existing DMR base station does not affect the use to DMR standard control signal yet.Farthest utilized existing resource, be conducive to the arrowband group system and seamlessly transit to the wideband multimedia cluster.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of an embodiment of a kind of DMR of the present invention base station;
Fig. 2 is the structural representation of MSU among the present invention;
Fig. 3 is the structural representation of an embodiment of a kind of wideband multimedia trunked communication system of the present invention;
Fig. 4 is a method flow diagram realizing the medium-rate business among the present invention based on the wideband multimedia trunked communication system framework among the embodiment three.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing the embodiment of the invention is described in detail.
Embodiment one
See also Fig. 1, it is a kind of DMR of the present invention (digital mobile radio, Digital Mobile Radio) structural representation of an embodiment of base station, this DMR base station 10 is applied in the broadband multimedia cluster system, comprise at least one DMR-CHU101 (digital mobile radio Channel Elements, Digital Mobile Radio-Channel Unit), a MSU102 (medium-rate business unit, Medium-speed Service Unit) and a RANC103 (wireless access net controller, Radio Access Network Controller), wherein, described DMR-CHU101 takies different channel resources with described MSU102;
Described at least one DMR-CHU101, be used for described RANC103 between communicate by letter, be that the DMR channel of terminal distribution is transmitted uplink service control signal and DMR narrow band data to described RANC at RANC,, and downlink business control signal and DMR narrow band data be handed down to each terminal;
Described MSU102 is used for setting up the medium-rate service transmission channels with described RANC103, transmits up medium-rate business datum to described RANC in described medium-rate service transmission channels, and descending medium-rate business datum is handed down to each terminal;
Described RANC103, be used for setting up the medium-rate service transmission channels with described MSU102, on described medium-rate service transmission channels, the descending medium-rate business datum that SCC is sent is transmitted to described MSU, and the up medium-rate business datum that MSU is transmitted is transmitted to SCC; And communicate by letter with described DMR-CHU101, be each terminal distribution DMR channel, on described DMR channel, downlink business control signal and DMR narrow band data that SCC is sent are transmitted to described DMR-CHU, and uplink service control signal and DMR narrow band data that DMR-CHU is sent are transmitted to SCC.
Described business control signaling comprises medium-rate business control signaling and DMR standard control signal.
Wherein, the DMR channel comprises control channel and Traffic Channel, and the control signal that the DMR business is set up process transmits at control channel, and the rear control signal to the service ending process of the professional foundation of DMR transmits in Traffic Channel.
Preferably, adopt GTP (general packet wireless service tunnel protocol, GPRS Tunnelling Protocol) protocol forward medium-rate business datum between MSU102 and the RANC103.
Further preferred, see also Fig. 2, it is the structural representation of MSU among the present invention, MSU102 comprises: the first processing unit 1021 and the first forwarded upstream unit 1022, wherein,
The first processing unit 1021, the up medium-rate business datum that is used for that terminal is uploaded is carried out data according to the GTP agreement and is processed;
The first forwarded upstream unit 1022, the up medium-rate business datum that is used for after will processing on the described medium-rate service transmission channels is transmitted to described RANC103.
Preferably, adopt GTP protocol transmission business control signaling and traditional business data between described DMR-CHU and the described RANC.
In the present invention, RANC both had been responsible for the DMR narrow band service is controlled, and also was responsible for the medium-rate business that newly increases is controlled.As, in a visual calling, the existing voice control function of RANC (being the DMR narrow band service) has again video capability (being that medium-rate is professional).
Particularly, RANC comprises the control of traditional data business: the transmitting-receiving of the data such as assisted call control (being former DMR call business control), location information management, channel resource management, network resource management and voice.
RANC comprises the control of the medium-rate business of expansion: the transmitting-receiving of assisted call control (being the medium-rate Service control), user and tunnel relation management, network resource management, medium-rate data.
Wherein, assisted call control is exactly call setup, calls out and safeguard that (right of speech or data transmission route), calling discharge; Location information management comprises the positional information of the terminal (UE) to all bimodulus, and the portable terminal of so-called bimodulus just refers to namely support traditional data professional, also supports the terminal of medium-rate business; Former DMR business distributes/discharges the DMR channel resource when call setup/release; The tunnel (is set up during UE-＞MSU-＞RANC)/discharge in UE start-up logging/cancellation between MSU and RANC.Between UE and MSU channel set up in business/distribute when discharging/discharge channel.。RANC safeguards the relation in UE and tunnel, and MSU safeguards the relation of UE and channel.
About the communication between DMR-CHU and the RANC, not in the DMR critical field.For example, in the present invention program, can adopt the fixed configurations of port and channel.Certainly, can adopt other communication mode to communicate, embodiment of the invention example does not limit this yet.So-called Internet resources are exactly when call setup, and RANC and SCC, RANC and MSU consult IP and port, the voice that are used to specify or the transmitting-receiving of data.Network resource management is unified management.So-called network resource management is exactly to be call distribution or releasing network resources.The transmitting-receiving of voice or data is exactly from the receiving port receive data, data is sent to the other side's receiving port again.
As can be seen from the above-described embodiment, in existing DMR base station, increase the medium-rate business unit, and, take different channel resources between the DMR-CHU in the medium-rate business unit that increases and the existing DMR base station, make the DMR base station of expansion not only can support the DMR narrow band service, can also support medium-rate professional.In addition, the function of the DMR-CHU expansion transmission medium-rate business control signaling in existing DMR base station does not affect the use to DMR standard control signal yet.Farthest utilized existing resource, be conducive to the arrowband group system and seamlessly transit to the wideband multimedia cluster.
Embodiment two
The present embodiment also provides a kind of wireless access network, is applied in the broadband multimedia cluster system, comprises the DMR base station of describing among at least one embodiment one.
As can be seen from the above-described embodiment, in existing DMR base station, further increase the medium-rate business unit, and, take different channel resources between the DMR-CHU in the medium-rate business unit that increases and the existing DMR base station, make the DMR base station of expansion not only can support the DMR narrow band service, can also further support medium-rate professional.In addition, the function of the DMR-CHU expansion transmission medium-rate business control signaling in existing DMR base station does not affect the use of DMR standard control signal yet.Farthest utilized existing resource, be conducive to the arrowband group system and seamlessly transit to the wideband multimedia cluster.
Embodiment three
See also Fig. 3, it is the structural representation of an embodiment of a kind of trunked communication system of the present invention, this system comprises: the RAN302 (wireless access network of describing among the mode mobile terminal 301 of at least one support DMR narrow band service and medium-rate business, at least one embodiment two, Radio Access Net), SCC303 (switching control center, a Switch﹠amp; Control Center) and at least one dispatching desk 304.
Preferably, the SIP (Session initiation Protocol, Session Initiation Protocol) according to expansion realizes user service registration and calls out control between described RAN and the described SCC.
Wherein, SIP is by ietf definition, an IP-based application layer control protocol.
Preferably, the diameter agreement according to expansion realizes access authentication and user data synchronization between described RAN and the described SCC.
Wherein, the diameter agreement by the AAA working group of IETF as follow-on aaa protocol standard.The diameter agreement is the upgraded version of radius protocol, comprises basic agreement, NAS (network insertion service) agreement, EAP (can expand discriminating) agreement, MIP (Mobile IP) agreement and CMS (code message grammer) agreement etc.
As can be seen from the above-described embodiment, in existing DMR base station, further increase the medium-rate business unit, and, take different channel resources between the DMR-CHU in the medium-rate business unit that increases and the existing DMR base station, make the DMR base station of expansion not only can support the DMR narrow band service, can also further support medium-rate professional.In addition, the function of the DMR-CHU expansion transmission medium-rate business control signaling in existing DMR base station does not affect the use of DMR standard control signal yet.Farthest utilized existing resource, be conducive to the arrowband group system and seamlessly transit to the wideband multimedia cluster.
Trunked communication system framework based among Fig. 3 sees also Fig. 4, and it is for realizing a method flow diagram of medium-rate business based on the wideband multimedia trunked communication system framework among the embodiment three among the present invention, and the method comprises:
Step 401:UE start is carried out user's access authentication and user registration and user service registration through DMR-CHU to RANC;
Step 402:UE start is registered through MSU to RANC, sets up the medium-rate service channel for UE between MSU and RANC;
Step 403:UE sends the medium-rate business through DMR-CHU to RANC and sets up solicitation message; Its
In, the up path that the medium-rate business is set up solicitation message is:
UE-＞DMR-CHU-＞RANC。
Step 404:RANC transmits the medium-rate business to SCC and sets up solicitation message;
Step 405:SCC issues the medium-rate business to RANC and sets up response message;
Step 406:RANC transmits the medium-rate business through DMR-CHU to UE and sets up response message;
Wherein, the medium-rate business is set up the downlink path of response message and is: RANC-＞DMR-CHU-＞UE.
By above-mentioned steps 403-406, UE has the right of carrying out the medium-rate business.
Step 407:UE sends the professional transmission route solicitation message of medium-rate through DMR-CHU to RANC;
Wherein, the up path of the professional transmission route solicitation message of medium-rate is: UE-＞DMR-CHU-＞RANC.
Step 408:RANC transmits the professional transmission route solicitation message of medium-rate to SCC;
Step 409:SCC issues the professional transmission route grant message of medium-rate to RANC;
Step 410:RANC transmits the professional transmission route grant message of medium-rate through DMR-CHU to UE;
Wherein, the downlink path of the professional transmission route grant message of medium-rate is: RANC-＞DMR-CHU-＞UE.
By above-mentioned steps 407-410, UE has the transmission route of medium-rate data.
Step 411: after the mandate, UE sends up medium-rate data through MSU to RANC;
Wherein, the up path of up medium-rate data is: UE-＞MSU-＞RANC-＞SCC.
Step 412:RANC sends up RTP medium-rate data to SCC;
Step 413: after up medium-rate data were sent, UE sent the professional transmission route release message of medium-rate through DMR-CHU to RANC;
Wherein, the up path of the professional transmission route release message of medium-rate is: UE-＞DMR-CHU-＞RANC.
Step 414:RANC transmits the professional transmission route release message of medium-rate to SCC;
Step 415:SCC issues the professional transmission route of medium-rate to RANC and discharges response message;
Step 416:RANC transmits the professional transmission route of medium-rate through DMR-CHU to UE and discharges response message;
Wherein, the downlink path of the professional transmission route release of medium-rate response message is: RANC-＞DMR-CHU-＞UE.
By above-mentioned steps 413-416, the UE that has the data transmission route discharges transmission route, and after the release, UE is in the receive data state.
Step 417:SCC issues descending RTP medium-rate data to RANC;
Step 418:RANC sends descending medium-rate data through MSU to UE;
Step 419: after descending medium-rate data receiver was complete, UE sent the professional solicitation message that discharges of medium-rate through DMR-CHU to RANC;
Wherein, the professional up path that discharges solicitation message of medium-rate is: UE-＞DMR-CHU-＞RANC;
Step 420:RANC transmits the professional solicitation message that discharges of medium-rate to SCC;
Step 421:SCC issues the professional response message that discharges of medium-rate to RANC;
Step 422:RANC sends the professional response message that discharges of medium-rate through DMR-CHU to UE; Its
In, the professional downlink path that discharges response message of medium-rate is: RANC-＞DMR-CHU-＞UE.
By above-mentioned steps 419-422, it is professional that UE discharges medium-rate, the medium-rate service ending.
Need to prove, one of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, to come the relevant hardware of instruction to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process such as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above a kind of DMR provided by the present invention base station, wireless access network and wideband multimedia trunked communication system are described in detail, used specific embodiment herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (7)
1. digital mobile radio DMR base station, it is characterized in that, be applied in the broadband multimedia cluster system, comprise: at least one DMR Channel Elements DMR-CHU, a medium-rate business unit MSU and a wireless access net controller RANC, wherein, described DMR-CHU takies different channel resources with described MSU;
Described at least one DMR-CHU, be used for described RANC between communicate by letter, be that the DMR channel of terminal distribution is transmitted uplink service control signal and DMR narrow band data to described RANC at RANC, and downlink business control signal and DMR narrow band data are handed down to terminal;
Described MSU is used for setting up the medium-rate service transmission channels with described RANC, transmits up medium-rate business datum to described RANC in described medium-rate service transmission channels, and descending medium-rate business datum is handed down to each terminal;
Described RANC, be used for setting up the medium-rate service transmission channels with described MSU, on described medium-rate service transmission channels, the descending medium-rate business datum that switching control center SCC is sent is transmitted to described MSU, and the up medium-rate business datum that MSU is transmitted is transmitted to SCC; And communicate by letter with described DMR-CHU, be each terminal distribution DMR channel, on described DMR channel, downlink business control signal and DMR narrow band data that SCC is sent are transmitted to described DMR-CHU, and uplink service control signal and DMR narrow band data that DMR-CHU is sent are transmitted to SCC.
Described business control signaling comprises medium-rate business control signaling and DMR standard control signal.
2. base station according to claim 1 is characterized in that, adopts general packet wireless service tunnel protocol GTP protocol forward medium-rate business datum between described MSU and the described RANC.
3. base station according to claim 2 is characterized in that, described MSU comprises:
The first processing unit, the up medium-rate business datum that is used for that terminal is uploaded is carried out data according to the GTP agreement and is processed;
The first forwarded upstream unit, the up medium-rate business datum that is used for after will processing on the described medium-rate service transmission channels is transmitted to described RANC.
4. a wireless access network is characterized in that, is applied in the broadband multimedia cluster system, comprises that at least one is such as the described DMR of any one base station among the claim 1-3.
5. wideband multimedia trunked communication system, it is characterized in that, comprise mode mobile terminal, at least one wireless access network RAN as claimed in claim 4, a switching control center SCC and at least one dispatching desk DC that at least one supports DMR narrow band service and medium-rate business.
6. system according to claim 5 is characterized in that, the Session initiation Protocol SIP according to expansion between described RAN and the described SCC realizes user service registration and calls out control.
7. system according to claim 5 is characterized in that, the diameter agreement according to expansion between described RAN and the described SCC realizes access authentication and user data synchronization.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017008765A1 (en) * | 2015-07-16 | 2017-01-19 | 海能达通信股份有限公司 | Transmitting terminal, receiving station, and application data transmitting and receiving method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101489186A (en) * | 2002-09-13 | 2009-07-22 | 三星电子株式会社 | Method for providing interactive data service in a mobile communication system |
| US20120188931A1 (en) * | 2009-08-26 | 2012-07-26 | Lg Electronics Inc. | Structure of an efficient relay medium access control protocol data unit in a broadband wireless access system, and data transmission method using same |
-
2012
- 2012-12-17 CN CN201210547994.XA patent/CN103002404B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101489186A (en) * | 2002-09-13 | 2009-07-22 | 三星电子株式会社 | Method for providing interactive data service in a mobile communication system |
| US20120188931A1 (en) * | 2009-08-26 | 2012-07-26 | Lg Electronics Inc. | Structure of an efficient relay medium access control protocol data unit in a broadband wireless access system, and data transmission method using same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017008765A1 (en) * | 2015-07-16 | 2017-01-19 | 海能达通信股份有限公司 | Transmitting terminal, receiving station, and application data transmitting and receiving method |
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