CN100417056C - Method for implementing always online in CDMA standard trunked communication system - Google Patents
Method for implementing always online in CDMA standard trunked communication system Download PDFInfo
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- CN100417056C CN100417056C CNB031397549A CN03139754A CN100417056C CN 100417056 C CN100417056 C CN 100417056C CN B031397549 A CNB031397549 A CN B031397549A CN 03139754 A CN03139754 A CN 03139754A CN 100417056 C CN100417056 C CN 100417056C
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Abstract
The present invention discloses a method for realizing permanent user online in a CDMA system cluster communication system in the mobile communication field. Firstly a CTML link is configured and managed; a scheduling server artificially configures various kinds of information; simultaneously, a scheduling client end configures various kinds of information corresponding to the scheduling server, and then establishes and maintains the CTML link; a base station system originates the establishment process of the CTML link; the scheduling client end and the scheduling server establish the CTML link, and process the CTML link during a fault state; finally, the calling process is realized by the CTML link. The method of the present invention realizes the permanent online function in cluster communication in honeycomb communication systems, simultaneously solves the problem of correctly identifying special cluster signaling on the premise of following standard A8/A9/A10/A11 interfaces in the CDMA system cluster communication system, realizes the shared link of all users, and reduces network flow.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to and realize the always online method of travelling carriage in the CDMA standard group communication system.
Background technology
Trunked communication system is meant one group of wireless channel of multiple users share, and dynamically use the dedicated mobile communications subsystem of these channels, it is a kind of commander, dispatching patcher, in some social economies, the relatively advanced country of industrial or agricultural, there is application very widely in this system in the departments such as enterprise, cause, industrial and mineral, oil field, farm, public security, police and army that commander, scheduling feature are had relatively high expectations.
CDMA standard group communication system main feature is to adopt half-duplex communication mode, can realize continuing fast, and support group call (being the method for calling of one-to-many).In the CDMA standard group communication system, require user's shared forward channel in same sub-district in the group, when group user is called out or is talked, as long as pin PTT (Push To Talk, push-to-talk) key just can be conversed with other users in the group, and this PTT business is widely used in intercom system and group system, be public security, fire-fighting, communications and transportation, airport aviation, construction site, big assembly, groups such as military scheduling use provides the command scheduling function.Along with the progress of society, the enhancing of flow of personnel, the fast development of simultaneous mobile communication technology, the field of personal communication is more and more wider, group service also turns to the individual to use gradually, between for example young fashion personage or the chat in the groupuscule, the communication between the household internal member etc.Demand is brought the innovation of technology, uses the development that brings product, along with extensively carrying out of mobile communication value-added service, has the trunked communication system of the CDMA standard of colony's calling, message sending function, has become a kind of new mobile value-added application day by day.
The CDMA standard group communication system is to use IP (Internet Protocol, Internet protocol) network carrying voice messaging, base station system is by dispatching client (function class is like the IAD of packet data network) and dispatch server (call treatment center, finishing user's trunked call sets up, authentication, reverse frames copy function) link to each other, travelling carriage is by the base station system connecting system, adopt standard A 8/A9 interface (transmission of signaling and data between carrying base station system and the packet data control module) at the interface between base station system and the dispatching client, adopt standard A 10/A11 interface (transmission of signaling and data between loaded packet data control module and the transmitting grouped data service node) at the interface between dispatching client and the dispatch server.
Simultaneously, for realizing specific group service, need to increase by one group of cluster dedicated signaling (being used to control the call setup of cluster and release, management and group), the mode of cluster dedicated signaling with business datum encapsulated, between base station system and dispatching client, adopt short data burst messages to carry to signaling, between dispatch server and dispatching client, do not support short data burst messages, thereby adopt pure business datum encapsulation.But owing to adopt standard interface, if handle according to the legacy data form of service, dispatch server can't differentiated service data and cluster dedicated signaling, and simultaneously, base station system can't be distinguished common short data burst messages and cluster dedicated signaling.Always online is a big characteristic of trunked communication system, in the honeycomb cluster communication system, if handle by the traditional data trafficwise, before transmitting short data burst messages, must set up network earlier connects, could send short data burst messages, but according to data traffic flows, just set up network when exhaling and connect rising, can't realize always online, thereby increase to call out turn-on time, thereby need in system initialization, just set up this network channel, still do not have effective ways at present and realize this purpose.
Summary of the invention
The objective of the invention is to overcome prior art and can't realize under the situation of not wasting Internet resources that the user is always online, save the shortcoming of calling out turn-on time, a kind ofly can save Internet resources and call out turn-on time, improve in the CDMA standard group communication system of link reliability and realize the always online method of user proposing.
For achieving the above object, the present invention proposes and realize the always online method of user in a kind of CDMA standard group communication system, it is characterized in that, may further comprise the steps:
The first step: configuration management CTML link (Common Trunking Message Link, public cluster signaling link)
(1) dispatch server utilizes that the IP address of the base station system that the CTML link is connected is safeguarded in consistency operation, it concerns with base station system link Access Layer and carry out human configuration, the corresponding relation of the various information of while configuration schedules client, comprise position area information, area information and CTML link information, be used for mobile paging station;
(2) dispatching client disposes IP address, authentication information and the corresponding CTML link No. of corresponding dispatch server according to the configuration of dispatch server.
Second step: set up and safeguard the CTML link
(1) base station system initiate and dispatching client between CTML link establishment process, and write down every CTML link relevant information with and state; When system initialization, inquiry backstage configuration information according to configuration information and dispatching client state information, sends CTML request for building link message to each dispatching client that is in normal condition;
(2) dispatching client confirms that by " keyword " that indicate link No. in the request message this request message is " setting up the CTML link " message, send registration message to dispatch server, dispatching client is after receiving the dispatch server enrollment response message, directly return enrollment response message to base station system, sign is set up the CTML link and is finished;
(3) the corresponding state position of CTML link is set is normal condition to base station system;
(4) between base station system and dispatching client and dispatching client and the dispatch server, in case the communication appearance is unusual, the state that base station system is put corresponding CTML link is " fault ", and no longer past this CTML link sends signaling when calling out initiation;
(5) nonserviceable, dispatching client still regularly sends registration message toward dispatch server, in case receive the enrollment response message of dispatch server, then recovers the CTML link again;
The 3rd step: use the CTML link to realize calling procedure
(1) after base station system is received the call message of travelling carriage,, from the normal CTML link of state, selects one, be used for the signaling transmission of this customer call according to the principle of load sharing;
(2) paging is carried out to travelling carriage in the opsition dependent zone during dispatch server paging, if on a base station system many CTML links are arranged, then the Link State preserved according to the base station of dispatch server selects the normal CTML link of a bar state to send beep-page message arbitrarily; If link is unusual, then select another CTML link of same base station controller to send beep-page message, the final CTML link that uses of user is pressed the principle of load sharing and is specified by base station system;
(3) after base transceiver station was specified the CTML link, all cluster message all sent by the CTML link of appointment, after breaking down, still reassign the CTML link by base transceiver station.
Adopt the method for the invention, use a data link to be signaling link, transmit signaling with short data burst messages, and link is that all users are public, can realize " always online function " in the trunking communication in cellular communication system, solved again in the CDMA standard group communication system simultaneously, under the prerequisite of following standard A 8/A9/A10/A11 interface, the problem of the proprietary signaling of correct identification cluster, and realized all user's shared links, reduced network traffics.
Description of drawings
Fig. 1 is to use the CDMA standard group communication system network structure of CTML link.
Fig. 2 is that the CTML link uses flow chart in the method for the invention calling procedure.
Fig. 3 is that CTML link flow chart is set up and safeguarded to the method for the invention.
Embodiment
Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme:
Use shared link mode proposed by the invention realizes the solution that the user is always online, and main thought is: in system initialization, set up a CTML link, this link is set up in system initialization, by the user on the whole BSC is shared.This link is distinguished with other data link mutually by " keyword " of link because it be shared link, in whole group system for all users are shared, thereby both solved always online problem, do not waste Internet resources again.Group system is by base station system, dispatching client and dispatch server three parts are formed, base station system is responsible for travelling carriage and is inserted, functions such as call setup, dispatch server is responsible for user data distribution, subscription authentication etc., dispatching client is used to connect base station system and dispatch server, sets up a data link between dispatching client and dispatch server, is used to use the burst short data mode of standard to transmit the cluster dedicated signaling.
The method of the invention mainly comprises the content of three aspects: the appointment of CTML link in the foundation of the configuration management of CTML link, CTML link and maintenance and the calling procedure.
Fig. 1 shows the network structure of the group system of using the CTML link.
As can be seen from the figure, the CTML link is the passage that is used to transmit data between base station system and the dispatch server.Starting point is a base station system, and terminal point is a dispatch server, and the CTML link is divided into two parts, and middle continuous by dispatching client, the link that connects between base station system and the dispatching client is A9d; Connecting dispatch server and dispatching client is A10d.On the CTML link, use the short data burst mode to transmit the proprietary signaling of cluster.Adopt this structure, can in " always online " function that realizes group service, can realize again being consistent with standard.
Fig. 2 has described the use of CTML link in calling procedure.
201. system finishes initialization, each CTML link establishment is finished, and sets state.Wherein, dispatch server configures the corresponding relation of the various information of dispatching client, specifically comprises position area information, area information and CTML link.
202. when base station system was received the call message of travelling carriage or page-response message, judgement was the trunking communication business, needed to distribute the CTML link circuit resource, transferred 203 to.
203. base station system according to the principle of load sharing from its CTML link-state list of preserving (information such as position, IP, state that comprises the CTML link), take out the normal CTML link of a bar state, and it is distributed to this user, simultaneously this CTML link information and Call Reference Number are mapped one by one.
Receive other signaling of user 204. work as base station system, decision will be sent out message and give dispatch server.
205. base station system at first from the CTML link-state list of its preservation inquiry this user pairing CTML link whether state is normal, if undesired then need to reassign the CTML link, transfer 203 to, if normally then transfer 206 to.
206. dispatching client judges whether call cleared message after receiving the base station system signaling, if call clearing is represented end of conversation, can remove corresponding resource, transfers 207 to, if not then continuing to keep conversation, transfers 204 to.
207. dispatching client is received call cleared message, removes the shared resource of this user.
Adopt above-mentioned call treatment mode, both can realize the function of " always online ", can reduce Signalling exchange as much as possible again simultaneously, make system resource obtain the most effective utilization, improve system effectiveness.
Fig. 3 has described the process of CTML link establishment and maintenance.
301. base station system is finished initialization.
302. detecting, base station system has the CTML link configuration in the system, then obtain the configuration information of dispatching client, and send CTML request for building link message to dispatching client according to the information of configuration.
303. dispatching client obtains the configuration information of dispatch server from configuration database, and sends registration message to dispatch server, the CTML link is set up in request, and opens timer, goes to 303, waits for the response of dispatch server.
304. dispatching client after receiving enrollment response message, judges that whether registration is successful, if success then needs the CTML of informing base station system link normal, transfers 3041 to; If unsuccessful then need the informing base station system to put corresponding fault position, transfer 3042 to.If do not receive the enrollment response message of dispatch server, and the timer expiry of dispatching client needs equally the informing base station system to put corresponding fault position, transfers 3042 to.
3041. dispatching client sends message to base station system, this CTML link of informing base station system is normal, can use this CTML link to transmit signaling, simultaneously in order to safeguard the state of CTML link, transfers 305 to, and beginning is registering flow path regularly.
3042. dispatching client sends message to base station system, this CTML link of informing base station system is unavailable and put corresponding fault position, transfers 305 to, and beginning is registering flow path regularly.
305. dispatching client is regularly initiated registration message to the dispatch service device, and is opened timer in order to obtain the state of CTML link, goes to 303 simultaneously, waits for the response of dispatch server.
Adopt this mode to set up and safeguard that the CTML link can be consistent with the available data traffic criteria, again can maximum possible keep the stable of CTML link, even after link opens circuit owing to physical cause, recover just often, can automatically the CTML link re-establishment be got up at physical link.
Claims (4)
1. realize the always online method of user in a CDMA standard group communication system, it is characterized in that, may further comprise the steps:
The first step: the public cluster signaling link of configuration management:
(11) dispatch server utilizes that the IP address of the base station system that public cluster signaling link is connected is safeguarded in consistency operation, it concerns with base station system link Access Layer and carry out human configuration, the corresponding relation of configuration schedules client various information is used for mobile paging station simultaneously;
(12) dispatching client is according to the configuration of dispatch server, the IP address of the dispatch server that configuration is corresponding, the corresponding public cluster signaling link of authentication information and institute number;
Second step: set up and the public cluster signaling link of maintenance:
(21) base station system sends public cluster signaling link to dispatching client and sets up request message;
(22) after dispatching client is received " setting up public cluster signaling link " request message, send registration message to dispatch server, dispatching client directly returns enrollment response message to base station system after receiving the dispatch server enrollment response message, set up and finish public cluster signaling link;
The 3rd step: use public cluster signaling link to realize calling procedure:
(31) after base station system is received the call message of travelling carriage, select a public cluster signaling link, be used for the signaling transmission of this customer call;
(32) during the dispatch server paging, select the normal public cluster signaling link of a bar state to send beep-page message arbitrarily;
(33) all cluster message are all passed through selected public cluster signaling link transmission.
2. realize the always online method of user in the CDMA standard group communication system according to claim 1, it is characterized in that described dispatching client various information comprises position area information, area information and public cluster signaling link information.
3. realize the always online method of user in the CDMA standard group communication system according to claim 1, it is characterized in that, in described second step:
Described step (21) is specially: base station system initiate and dispatching client between public cluster signaling link set up process, and write down every public cluster signaling link relevant information with and state; When system initialization, inquiry backstage configuration information according to configuration information and dispatching client state information, sends public cluster signaling link to each dispatching client that is in normal condition and sets up request message;
Described step (22) is specially: dispatching client confirms that by " keyword " that indicate link No. in the request message this request message is " setting up public cluster signaling link " message, send registration message to dispatch server, dispatching client is after receiving the dispatch server enrollment response message, directly return enrollment response message to base station system, sign is set up public cluster signaling link and is finished;
Described second step also comprises the steps:
(23) the corresponding state position of public cluster signaling link is set is normal condition to base station system;
(24) between base station system and dispatching client and dispatching client and the dispatch server, in case communication occurs unusual, the state that base station system is put corresponding public cluster signaling link is " fault ", no longer sends signaling toward this public cluster signaling link as calling out when initiating;
(25) nonserviceable, dispatching client still regularly sends registration message toward dispatch server, in case receive the enrollment response message of dispatch server, then recovers public cluster signaling link again.
4. realize the always online method of user in the CDMA standard group communication system according to claim 1, it is characterized in that, in described the 3rd step:
Described step (31) is specially: after base station system is received the call message of travelling carriage, according to the principle of load sharing, select one from the normal public cluster signaling link of state, be used for the signaling transmission of this customer call;
Described step (32) is specially: paging is carried out to travelling carriage in the opsition dependent zone during dispatch server paging, if many public cluster signaling links are arranged on the base station system, then dispatch server selects the normal public cluster signaling link of a bar state to send beep-page message arbitrarily according to the Link State of base station preservation; If link is unusual, then select another public cluster signaling link of same base station controller to send beep-page message, the final public cluster signaling link that uses of user is pressed the principle of load sharing and is specified by base station system;
Described step (33) is specially: after base transceiver station was specified public cluster signaling link, all cluster message all sent by the public cluster signaling link of appointment, after breaking down, still reassign public cluster signaling link by base transceiver station.
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| CN101180895B (en) * | 2005-08-22 | 2010-08-18 | 中兴通讯股份有限公司 | Method for transmitting group dedicated signaling using data interface in group communication |
| CN101137117B (en) * | 2007-01-15 | 2011-04-06 | 中兴通讯股份有限公司 | Group calling cluster service supporting method |
| EP2798861A1 (en) * | 2011-12-30 | 2014-11-05 | Nokia Corporation | Bearer configuration for background traffic |
| CN104992711B (en) * | 2015-05-27 | 2018-06-15 | 东南大学 | A kind of LAN cluster duplex voice communication method based on mobile terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5960360A (en) * | 1996-12-04 | 1999-09-28 | Motorola, Inc. | Communication method |
| WO2002093953A1 (en) * | 2001-05-15 | 2002-11-21 | Qualcomm Incorporated | Communication device for reducing latency in a mobile-originated group communication request |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5960360A (en) * | 1996-12-04 | 1999-09-28 | Motorola, Inc. | Communication method |
| WO2002093953A1 (en) * | 2001-05-15 | 2002-11-21 | Qualcomm Incorporated | Communication device for reducing latency in a mobile-originated group communication request |
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