CN1322769C - Method for backward transmitting message in digital honeycomb network group communication system - Google Patents
Method for backward transmitting message in digital honeycomb network group communication system Download PDFInfo
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- CN1322769C CN1322769C CNB031596355A CN03159635A CN1322769C CN 1322769 C CN1322769 C CN 1322769C CN B031596355 A CNB031596355 A CN B031596355A CN 03159635 A CN03159635 A CN 03159635A CN 1322769 C CN1322769 C CN 1322769C
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Abstract
The present invention discloses a method for reversely transmitting messages in a cluster communication system of a digital honeycomb network, which comprises: a base station system allocates a reverse access channel to subzones supporting cluster service; each cluster terminal reversely transmitting the messages in a non communication state judges whether a reverse service channel of the cluster group of the cluster terminal is occupied or not currently; if the reverse service channel is occupied, the messages are transmitted to the base station system through the reverse access channels, and if the reverse service channel is not occupied, the messages are transmitted through the reverse service channel of the cluster group. The present invention solves the problem that when the reverse service channel is in a non idle state, the messages are transmitted from the cluster terminal side to a network side.
Description
Technical field
The present invention relates to mobile communication technology, specifically, relate to the method that oppositely sends message in the digital cellular network trunked communication system.
Background technology
Trunked communication system is a kind of senior mobile dispatching patcher, be a kind of less expensive of growing up in recent years, command dispatching and communication system more flexibly, be widely used in units such as government bodies, energy traffic, airport harbour, industrial and mining enterprises, fire-fighting police, water conservancy and military affairs, to satisfy the needs of constituent parts intercommunication, representing specialized mobile radio net developing direction.
Wireless channel is divided into forward channel and reverse traffic channel, and forward channel is meant that from the base station to the channel of wireless terminal, reverse traffic channel is then opposite, is meant the channel of wireless terminal to the base station.Suppose that A is the base station, B is a wireless terminal, so A-〉communication on the B direction walks forward channel, B-〉communication on the A direction walks reverse traffic channel.
In the digital cellular network trunked communication system, base station system is forward traffic channel of each cluster set of dispense and a reverse traffic channel, wherein, forward traffic channel is shared by all colony terminals in the cluster group, often be called forward shared channel in the trunked communication system, reverse traffic channel is seized by the colony terminal in the cluster group.
Colony terminal in the cluster group is when carrying out reverse link communication, all colony terminals are monitored reverse traffic channel simultaneously in the cluster group, but have only a colony terminal can take reverse traffic channel, in case reverse traffic channel is occupied, other colony terminals then can not use the reverse traffic channel that takies in the cluster group, the reverse traffic channel of release busy when this colony terminal sign off, cluster service center or dispatching desk can offer this reverse traffic channel other colony terminal use in the cluster group.
From the channel occupancy characteristics of above-mentioned reverse link communication as seen, when certain colony terminal takies reverse traffic channel, be that reverse traffic channel is when busy, if this moment, other colony terminals will send any reverse message to the base station, for example physical layer is controlled signaling, insert demand signalling and some other high-level signaling message at random, all can't use reverse traffic channel, thereby cause oppositely to send message.
Summary of the invention
The object of the present invention is to provide the method that oppositely sends message in a kind of digital cellular network trunked communication system, when reverse traffic channel is busy, to realize sending information from colony terminal side direction network side.
The present invention is achieved through the following technical solutions:
Oppositely send the method for message in a kind of digital cellular network trunked communication system, it is characterized in that, this method comprises,
Base station system is for supporting cell allocation one Reverse Access Channel of group service, treat in the sub-district that each colony terminal that oppositely sends message and be in non-communications status judges whether the reverse traffic channel of cluster group is current occupied under it, if, then send message to base station system by Reverse Access Channel, otherwise then the reverse traffic channel by cluster group under it sends message.
Describedly send message by Reverse Access Channel to base station system and comprise that further described colony terminal sends message repeatedly behind random delay, until obtaining from network side to the affirmation of this message or send number of times and reach threshold value.
The present invention is by the Reverse Access Channel of base station system for the cell allocation of support group service, make to support respectively to be in all the cluster groups in the sub-district of group service under the busy state of reverse traffic channel of colony terminal cluster group under it of non-communications status, send message by Reverse Access Channel at random, having solved reverse traffic channel in the cluster group causes the important message of colony terminal can't to send to the problem of network side when occupied, improved the promptness that reverse message sends, kept and the communicating by letter of network side, thereby also improved the communication quality of group service; Because all cluster groups of sub-district can be shared Reverse Access Channel, have also effectively utilized channel resource.
Description of drawings
Fig. 1 is that the colony terminal of a message to be sent sends the flow chart that oppositely inserts request message (Uplink Access).
Embodiment
Basic ideas of the present invention are, base station system is for supporting cell allocation one Reverse Access Channel of group service, this channel is a common signal channel, when the reverse traffic channel of each cluster group is in busy state, the colony terminal that is in non-communications status in each cluster group can send message by described Reverse Access Channel randomly, thereby allows this channel share for the colony terminal that is in non-communications status in each cluster group.
For make purpose of the present invention, technical scheme, and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
In each sub-district of supporting group service, base station system is each cell allocation one Reverse Access Channel in advance, the structure of time slot of this channel is identical with DPCH with frame structure, and can use any ascending time slot and sign indicating number resource, employed ascending time slot and sign indicating number resource can send by broadcast channel.
When the colony terminal of the arbitrary cluster group in this sub-district had taken the reverse traffic channel of its cluster group, cluster service center or dispatching desk sent reverse traffic channel periodically to all colony terminals of this cluster group and take message.The arbitrary colony terminal that is in non-communications status in this cluster group need be when the base station sends message, the colony terminal that is in non-communications status takies message by the reverse traffic channel from cluster service center or dispatching desk and knows that this cluster group reverse traffic channel is occupied, then send message to the base station by Reverse Access Channel, if at this moment Reverse Access Channel is occupied, then this message sends behind 0 to 40 millisecond of random delay repeatedly, until obtaining from network side to the affirmation of this message or send number of times and reach the colony terminal preset threshold.If there are a plurality of colony terminals in a plurality of cluster groups all to need to send message in the sub-district, serve as to send message at interval repeatedly also then, to realize the time division multiplexing of Reverse Access Channel with 0 to 40 millisecond of random delay by Reverse Access Channel.Here, the random delay value is according to the number decision of frame length that Reverse Access Channel adopted and frame, and for example, in the CDMA 2000 system, Reverse Access Channel adopts 85 milliseconds frame usually, and therefore time delay is taken as 40 milliseconds immediately.
The described message that sends by Reverse Access Channel can be to insert request message, physical layer control signaling or high-level signaling, and must carry type of message, so that network side processing messages content; Group id and message content under the colony terminal.Also must carry and to insert reason, insert reference example for reverse access request message as the power grade that inserts random number, this colony terminal, priority etc.,, then insert request message and also comprise and be used for synchronous timing advance if network is the TDD system.
Because being the colony terminal that is in non-communications status of all cluster groups in the sub-district, shares Reverse Access Channel, have take often, characteristics that each colony terminal holding time is short, for avoiding rebuliding Reverse Access Channel the resource of time waste base station, when can having a cluster group to begin group service in the sub-district, sets up described Reverse Access Channel, or set up in advance in the sub-district of supporting group service, this channel can discharge after foundation, that is to say, do not adopt dynamical fashion to set up Reverse Access Channel.
Referring to shown in Figure 1, Fig. 1 is that the colony terminal of a message to be sent sends the flow chart that oppositely inserts request message (Uplink Access), specifies as follows:
Step 101, colony terminal judge whether it is in communications status, if, then show the current reverse traffic channel that taken of this colony terminal, so end transmission message; Otherwise execution in step 102;
Step 102～step 105, colony terminal judges whether to receive that reverse traffic channel takies message, if, then take the pre-assigned Reverse Access Channel of base station system at random, and send reverse access request message repeatedly by Reverse Access Channel behind the process random delay, until receiving the affirmation that this colony terminal is oppositely inserted request message from dispatching desk or cluster service center, perhaps this colony terminal judges whether the number of times that sends repeatedly reaches the threshold value that sets, otherwise, execution in step 105 sends oppositely access request message by reverse traffic channel.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1, oppositely send the method for message in a kind of digital cellular network trunked communication system, it is characterized in that, this method comprises,
Base station system is for supporting cell allocation one Reverse Access Channel of group service, the colony terminal for the treatment of oppositely to send message in the described sub-district and being in non-communications status judges whether the reverse traffic channel of cluster group is current occupied under it, if, then send message to base station system by described Reverse Access Channel, otherwise then the reverse traffic channel by cluster group under it sends message.
2, method according to claim 1, it is characterized in that, describedly send message by Reverse Access Channel to base station system and further comprise, described colony terminal sends message repeatedly behind random delay, until obtaining from network side to the affirmation of this message or send number of times and reach preset threshold.
3, method according to claim 2 is characterized in that, described time delay is 0 to N millisecond, and wherein N is by the number decision of frame length that Reverse Access Channel adopted and frame.
4, method according to claim 1 is characterized in that, and is described by group identifier, type of message and the message content of Reverse Access Channel under the message that base station system sends is carried this colony terminal at least.
5, method according to claim 1 is characterized in that, the described message that sends by reverse traffic channel is carried type of message and message content at least.
6, method according to claim 1 is characterized in that, described Reverse Access Channel is corresponding one by one with the sub-district of supporting group service.
7, method according to claim 1 is characterized in that, after base station system sent message, the base station kept described Reverse Access Channel by Reverse Access Channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031596355A CN1322769C (en) | 2003-09-19 | 2003-09-19 | Method for backward transmitting message in digital honeycomb network group communication system |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB031596355A CN1322769C (en) | 2003-09-19 | 2003-09-19 | Method for backward transmitting message in digital honeycomb network group communication system |
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| CN1599474A CN1599474A (en) | 2005-03-23 |
| CN1322769C true CN1322769C (en) | 2007-06-20 |
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| CNB031596355A Expired - Fee Related CN1322769C (en) | 2003-09-19 | 2003-09-19 | Method for backward transmitting message in digital honeycomb network group communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107528681B (en) * | 2017-09-05 | 2021-04-27 | 海能达通信股份有限公司 | Data transmission method, transceiver and communication terminal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5465386A (en) * | 1989-03-31 | 1995-11-07 | E.F. Johnson Company | Signaling protocol for a distributive wide area transmission trunked communication system |
| WO1998006228A2 (en) * | 1996-08-02 | 1998-02-12 | Motorola Limited | Method of determining communications mode |
| US6317595B1 (en) * | 1998-06-05 | 2001-11-13 | Com-Net Ericcson Critical Radio Systems, Inc. | Methods and system for transferring calls within trunked digital radio communications systems |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5465386A (en) * | 1989-03-31 | 1995-11-07 | E.F. Johnson Company | Signaling protocol for a distributive wide area transmission trunked communication system |
| WO1998006228A2 (en) * | 1996-08-02 | 1998-02-12 | Motorola Limited | Method of determining communications mode |
| US6317595B1 (en) * | 1998-06-05 | 2001-11-13 | Com-Net Ericcson Critical Radio Systems, Inc. | Methods and system for transferring calls within trunked digital radio communications systems |
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| CN1599474A (en) | 2005-03-23 |
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