CN101258703B - Method for conveying group inner public message based on CDMA technique cluster system - Google Patents
Method for conveying group inner public message based on CDMA technique cluster system Download PDFInfo
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- CN101258703B CN101258703B CN2005800515011A CN200580051501A CN101258703B CN 101258703 B CN101258703 B CN 101258703B CN 2005800515011 A CN2005800515011 A CN 2005800515011A CN 200580051501 A CN200580051501 A CN 200580051501A CN 101258703 B CN101258703 B CN 101258703B
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- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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Abstract
The present invention discloses a method of transmitting the common message in the cluster system based on CDMA technology, when the cluster group completes the cluster calling establishment state, the system will establish a forward sharing channel; the network side transmits a message to the base station side and indicates that the message is a common message of the group; the base station transmits the common message of the group to the forward sharing channel; the terminal monitors the forward sharing channel, and operates correspondingly according to the received common message of the group. The present invention fully utilizes the forward sharing channel, and can realize an effective transmission of the common message of the group by sending the marked common message to the cluster group members.; The least system resources can be used by much more persons, thus, the invention avoids the waste of forward resources in the existed cluster system.
Description
Technical field
The present invention relates to the trunking communication technical field, relate in particular to a kind of transfer approach based on group inner public message in the CDMA technology group 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.The honeycomb trunked communication system combines cellular communication system and specific schedule communication system, has both expanded the scope of business of cellular communication system, makes trunked communication system break away from the specific-dispatching communication system in function and regional limitation again.
Present honeycomb trunked communication system can be divided into TDMA (time division multiple access, Time Division Multiplex Access) and two kinds of standards of CDMA (code division multiple access, Code DivisionMultiplex Access) according to access way.In the third generation communication technology ripe day by day today, the TDMA standard exists and can not can't satisfy growing communication requirement to third generation communication system smooth evolution, defective such as capacity is limited and data throughout is low.And cdma system has the wide-band spread spectrum air interface, can satisfy the demand of third generation wireless communication system, not only traditional voice service can be provided, and Packet data service at a high speed can be provided.The cdma cellular communication system is combined with digital cluster system, both can improve group system number of users in the single sector, can on the basis of high-speed packet data service, develop the new business that more has the group system characteristics again.
The main feature of trunked communication system is to adopt half-duplex communication mode, can realize continuing fast, and support group call (being the method for calling of one-to-many).To group system half-duplex (whenever can only have a people to speak at most) characteristics, a forward voice channel can be shared by same group under a sector.General in the group system based on CDMA technology, a forward voice channel is shared by same group under same sector, and is that each user sets up Forward Dedicated Control Channel in the group.Wherein, the effect of Forward Dedicated Control Channel is on Traffic Channel, to send user's specific messages.So both can realize that group member shared forward voice channel, can realize independent control again single group member.
Yet, for group system, be not all message all be proprietary to the user.Is proprietary like message such as group member status poll, management and group to the user; Message such as words authority condition prompting, group calling release in group all users message content be the same, the genus public message.If still adopt user's Forward Dedicated Control Channel to send to above-mentioned public message, then needs all send one to each user's in the group Forward Dedicated Control Channel simultaneously, cause system resource waste such as system forward channel, power serious.
For group system, basic requirement is to use few system resource of trying one's best can reach the effect that many people use.Above-mentioned wasting of resources phenomenon is worthless in group system, so the group system of above-mentioned CDMA standard is badly in need of a kind of method of effective transmission group inner public message.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of transfer approach based on group inner public message in the CDMA technology group system; When utilizing Forward Dedicated Control Channel to transmit group inner public message in order to solution; Cause the serious problems of system resource waste such as system forward channel, power; Realize both accurately having transmitted group inner public message, effectively save the purpose of system resource again.
The present invention provides a kind of transfer approach based on group inner public message in the CDMA technology group system, comprises the steps:
When (1) group was in cluster multi call and sets up completion status, system set up a forward shared channel for this group in its each sector, place, group member terminal;
(2) forward shared channel of each sector, terminal monitoring place;
(3) network side sends a piece of news to the base station that base station side each and this group set up link, and to indicate this message be group inner public message;
(4) behind base station judgement and the reception group inner public message, the forward shared channel of in each sector, setting up to this group sends this group inner public message;
(5) after group inner public message is received from the forward shared channel of being monitored in the terminal, handle accordingly.
Said group inner public message is words power switch prompting message or group calling release message.Said forward shared channel is primary channel or complement channel, maybe can shares the forward logical channels of use; This forward shared channel is to be the shared channel of group inner public message foundation or a shared channel of sharing with speech separately.When a channel shared in group inner public message and speech, the terminal used the Mix Mode of MAC layer to distinguish message frame and Speech frame.
This message of the middle indication of said step (3) is that the step of group inner public message comprises:
In message, increase indication field, indicating this message is group inner public message; Or,
Whether through the sign of whether in this message, carrying unique user, distinguishing this message is group inner public message, if do not carry the sign of unique user, then this message is group inner public message;
The middle base station judgement of said step (4) received message is that the step of group inner public message comprises:
The base station confirms that according to the indication field in the received message this message is group inner public message; Or, the sign of whether carrying unique user in the message that base station judges received, if this message is not carried the sign of unique user, then this message is group inner public message.
Said step (4) further comprises:
The base station is provided with a timer when sending a group inner public message;
Timer then after, this group inner public message is retransmitted in the base station;
After the repeating transmission number of times reached maximum number of retransmissions, this message was abandoned retransmitting in the base station.
Said step also further comprises in (4): the group inner public message that the recurrence of attaching most importance to is sent adds the message sequence number that can discern repetition message; Said step also further comprises in (5): during the terminal monitoring forward shared channel, discern the message of repetition according to the message sequence number of receiving that group inner public message had.
Said step further comprises in (4):
To the group inner public message of the maximum frame size that can transmit greater than forward shared channel, the base station adopts the SAR mechanism in the CDMA2000 agreement that this message is carried out segmentation;
The group inner public message of base station after the forward direction shared channel sends segmentation;
Correspondingly, further comprise in the said step (5):
The terminal re-assemblies by the group inner public message of segmentation according to the SAR mechanism in the CDMA2000 agreement after receiving the group inner public message of segmentation transmission.
In the said step (5), the handled that carry out at the terminal is and three processing of the corresponding layer of group inner public message content.
Said method further is included in the step of forward shared channel and Forward Dedicated Control Channel while messaging:
Distribute 0-1 to use, distribute 2-7 to use to Forward Dedicated Control Channel to forward shared channel;
The base station joins message sequence number 0-1 group inner public message and it is sent to the terminal through forward shared channel;
The base station joins message sequence number 2-7 user's specific messages and it is sent to the terminal through Forward Dedicated Control Channel;
The terminal judges type of message;
If the message of receiving is from shared channel, then this message is group inner public message;
If the message of receiving is from DCCH, then this message is user's specific messages.
Ground method according to the invention makes full use of forward shared channel, uses few system resource of trying one's best can reach the effect that many people use, and has realized that group inner public message effectively transmits, and has avoided the forward direction wasting of resources in the group system.
Summary of drawings
Fig. 1 is according to the described CDMA cluster communication system of embodiment of the invention sketch map;
Fig. 2 shares the flow chart that transmits words power switch prompting message on the voice channel according to the group system of the embodiment of the invention at forward direction.
Preferred forms of the present invention
Be example with cluster communication system below, describe in further detail in conjunction with the technical scheme of accompanying drawing to the method for the invention based on the CDMA standard.
Fig. 1 has described and has realized the CDMA trunking communication environment that group inner public message sends.The group system that relates generally to comprises travelling carriage (MS; Mobile Station), base station system (BSS; BaseStation System), dispatch server (PDS, Push-To-Talk Dispatching Server), dispatching desk server (DAS, Dispatching Agent Server), dispatching desk client (DAC; Dispatching Agent Client), dispatching home location register entities such as (PHR, Push-To-Talk HomeRegister).
Group inner public message in the cluster communication system can be to be used to talk about the prompting message of power switching or the message that group calling discharges; Certainly; Group inner public message is not limited to above-mentioned two message, so long as the message that group member all sends and content is identical all can be used as group inner public message.
The forward shared channel that is used to transmit group inner public message can be that primary channel, complement channel or other can be shared the forward logical channels of use.Forward shared channel can be the shared channel of setting up for group inner public message separately, also can be to share a channel with speech.When a channel shared in group inner public message and speech, it was message frame or Speech frame that the terminal uses the Mix Mode of MAC layer to distinguish this frame.The delayed impact of voice also will be considered in the base station when sending group inner public message, can replace the Speech frame of some if needed.
Fig. 2 has described group system and has shared the flow process that transmits words power switch prompting message on the voice channel at forward direction, and wherein, forward shared channel is that forward direction is shared voice channel, and group inner public message is words power switch prompting message, and this flow process mainly comprises:
201:MS is in the talk business state, and is monitoring forward shared channel.
Group system is set up a forward shared channel in this sector, MS place for group under this MS after group calling foundation completion mobile station MS is in the talk business state, this is that forward direction is shared voice channel, and MS begins to monitor the shared voice channel of this forward direction.
202:PDS sends words power switch prompting message to BSS, and to indicate this message be group inner public message.
The base station BS S of dispatch server PDS under mobile station MS sends words power switch prompting message; And to indicate this message be group inner public message; Wherein, Indicating this message is that group inner public message can have several different methods, and for example: can in message, increase indication field, indicating this message is group inner public message; Perhaps can this message whether carry the sign of unique user whether distinguish this message be group inner public message through judging.Certainly, method is not limited to these two kinds.
After 203:BSS receives group inner public message, share voice channel at this group forward direction and send group inner public message.
BSS judges that the words power switch prompting message that receives is group inner public message, and the determination methods corresponding with step 202 comprises: if in message, have indication field, this message is group inner public message; Judge perhaps whether this message has carried the sign of unique user, if do not carry the sign of unique user in this message, then this message is group inner public message.
Then, BSS shares at the forward direction of all sectors at this group membership place and sends a words power switch prompting message on the voice channel, also can send speech frames simultaneously.For long message,, adopt SAR (Segmentation and Reassembly, the segmentation reorganization) mechanism in the CDMA2000 agreement if, need carry out segmentation to message greater than the maximum frame size of MAC layer.
204:BSS regularly retransmits on the forward shared channel of this group should words power switch prompting message.
On shared channel, send group inner public message, need to guarantee the reliability of transmission of messages.Adopt retransmission mechanism can reduce the possibility that this transmission of messages is lost; A timer is set when sending a group inner public message; Timer then back is retransmitted this message; Repeating transmission abandons retransmitting this message after reaching maximum number of retransmissions, and retransmission interval and maximum number of retransmissions can be looked concrete realization and decided.In order to make MS can discern the message of repetition, the message that the counterweight recurrence is sent is used and was sent identical message sequence number last time.
205:MS receives group inner public message and carries out handled.
MS monitors forward direction and shares voice channel, and MS shares at forward direction and receives words power switch prompting message and the Speech frame that BSS sends on the voice channel simultaneously, carries out three processing of corresponding layer according to the content of words power switch prompting message.MS is according to receiving that the message sequence number of message can discern the message of repetition, and can re-assembly by the message of segmentation.
The present invention makes full use of forward shared channel, uses few system resource of trying one's best can reach the effect that many people use, and has realized that group inner public message effectively transmits, and has avoided the forward direction wasting of resources in the group system.
In addition, in order to realize colony terminal and base station, can the segmentation on two kinds of channels of message sequence number be used that (the message sequence number is used to distinguish the message of repeating transmission at forward shared channel and DCCH messaging simultaneously; The message sequence number adds 1 during new information of the every transmission of transmit leg; Use original message sequence number during resend message, what the recipient received that two identical message of sequence number then think the back at interval at certain hour is the message of retransmitting), for example CDMA agreement regulation message sequence number is 0-7; The present invention selects forward shared channel message to use sequence number 0-1; DCCH message sequence number is used 2-7, mainly is to consider that group inner public message is few, does not need too many message sequence number; Can certainly adopt different segmentation methods, but can send influential the message of dedicated channel.Such as, also can use independent layer two instance respectively for forward shared channel message and DCCH message, the message sequence number is independent separately, can use 0-7.
Any technical staff of this area description to a kind of preferred embodiment more than is provided, so that can both use method of the present invention.Various modifications to these embodiment are conspicuous for a person skilled in the art, and defined here basic principle can be applied to other embodiment and need not use creativeness.Therefore, the embodiment shown in the invention is not restricted to here, and should meet and principle disclosed herein and novel features the most wide in range consistent scope.
Industrial applicibility
The invention provides a kind of transfer approach based on group inner public message in the CDMA technology group system, when group was in trunked call and sets up completion status, system set up a forward shared channel; Network side sends a message and indicates this message to base station side is group inner public message; This group inner public message is sent to the forward direction shared channel in the base station; The terminal monitoring forward shared channel carries out handled according to the group inner public message that receives.The present invention makes full use of forward shared channel, and the group inner public message that will pass through indication sends to group member, uses few system resource of trying one's best can reach the effect that many people use, and has avoided the problem of forward direction serious waste of resources in the prior art group system.
Claims (10)
1. the transfer approach based on group inner public message in the CDMA technology group system is characterized in that, comprises the steps:
When (1) group was in cluster multi call and sets up completion status, system set up a forward shared channel for this group respectively in its each sector, place, group member terminal;
(2) forward shared channel of each sector, terminal monitoring place;
(3) network side sends a piece of news to the base station that base station side each and this group set up link, and to indicate this message be group inner public message;
(4) behind base station judgement and the reception group inner public message, the forward shared channel of in each sector, setting up to this group sends this group inner public message;
(5) after group inner public message is received from the forward shared channel of being monitored in the terminal, handle accordingly.
2. the method for claim 1 is characterized in that, said group inner public message is words power switch prompting message or group calling release message.
3. the method for claim 1 is characterized in that,
Said forward shared channel is primary channel or complement channel, maybe can shares the forward logical channels of use;
This forward shared channel is to be the shared channel of group inner public message foundation or a shared channel of sharing with speech separately.
4. method as claimed in claim 3 is characterized in that, when a channel shared in group inner public message and speech, the terminal used the Mix Mode of MAC layer to distinguish message frame and Speech frame.
5. the method for claim 1 is characterized in that,
This message of the middle indication of said step (3) is that the step of group inner public message comprises:
In message, increase indication field, indicating this message is group inner public message; Or
Whether through the sign of whether in this message, carrying unique user, distinguishing this message is group inner public message, if do not carry the sign of unique user, then this message is group inner public message;
The middle base station judgement of said step (4) received message is that the step of group inner public message comprises:
The base station confirms that according to the indication field in the received message this message is group inner public message; Or
Whether carry the sign of unique user in the message that base station judges received, if this message is not carried the sign of unique user, then this message is group inner public message.
6. the method for claim 1 is characterized in that, said step (4) further comprises:
The base station is provided with a timer when sending a group inner public message;
Timer then after, this group inner public message is retransmitted in the base station;
After the repeating transmission number of times reached maximum number of retransmissions, this message was abandoned retransmitting in the base station.
7. method as claimed in claim 6 is characterized in that,
Said step further comprises in (4):
The group inner public message that the recurrence of attaching most importance to is sent adds the message sequence number that can discern repetition message;
Said step further comprises in (5):
During the terminal monitoring forward shared channel, discern the message of repetition according to the message sequence number of receiving that group inner public message had.
8. the method for claim 1 is characterized in that,
Said step further comprises in (4):
To the group inner public message of the maximum frame size that can transmit greater than forward shared channel, the base station adopts the SAR mechanism in the CDMA2000 agreement that this message is carried out segmentation;
The group inner public message of base station after the forward direction shared channel sends segmentation;
Said step further comprises in (5):
The terminal re-assemblies by the group inner public message of segmentation according to the SAR mechanism in the CDMA2000 agreement after receiving the group inner public message of segmentation transmission.
9. the method for claim 1 is characterized in that, in the said step (5), the handled that carry out at the terminal is and three processing of the corresponding layer of group inner public message content.
10. method as claimed in claim 7 is characterized in that, further is included in forward shared channel and the Forward Dedicated Control Channel step of messaging simultaneously:
Assignment messages sequence number 0-1 uses to forward shared channel, and assignment messages sequence number 2-7 uses to Forward Dedicated Control Channel;
The base station joins message sequence number 0-1 group inner public message and it is sent to the terminal through forward shared channel;
The base station joins message sequence number 2-7 user's specific messages and it is sent to the terminal through Forward Dedicated Control Channel;
The terminal judges type of message;
If the message of receiving is from shared channel, then this message is group inner public message;
If the message of receiving is from DCCH, then this message is user's specific messages.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2005/002084 WO2007065290A1 (en) | 2005-12-05 | 2005-12-05 | A method for transmitting the common message in the cluster system group based on cdma technology |
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| CN101258703A CN101258703A (en) | 2008-09-03 |
| CN101258703B true CN101258703B (en) | 2012-08-08 |
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| WO (1) | WO2007065290A1 (en) |
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| WO2014043900A1 (en) * | 2012-09-21 | 2014-03-27 | 华为技术有限公司 | Method and device for transmitting public message |
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| US6928063B2 (en) * | 2001-03-16 | 2005-08-09 | Motorola, Inc. | Method and apparatus for providing a dispatch patch service in a CDMA communication system |
| GB2380366B (en) * | 2001-08-14 | 2003-11-12 | Samsung Electronics Co Ltd | Method for transmitting and receiving common information in a cdma communication system hsdpa service |
| CN100483982C (en) * | 2003-05-22 | 2009-04-29 | 华为技术有限公司 | Information channel sharing method for supporting concentration service in CDMA system |
| CN100527655C (en) * | 2003-06-09 | 2009-08-12 | 华为技术有限公司 | A method for implementing cluster service in CDMA system |
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| CN101258703A (en) | 2008-09-03 |
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Effective date of registration: 20210305 Address after: 801-6, 8 / F, building 52, 2 Jingyuan North Street, Beijing Economic and Technological Development Zone, Daxing District, Beijing Patentee after: CALTTA TECHNOLOGIES Co.,Ltd. Address before: 518057 Zhongxing building, science and technology south road, Nanshan District hi tech Industrial Park, Guangdong, Shenzhen Patentee before: ZTE Corp. |
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Granted publication date: 20120808 |