CN103313196B - SPS Activiation method, base station and trunked communication system - Google Patents
SPS Activiation method, base station and trunked communication system Download PDFInfo
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- CN103313196B CN103313196B CN201210058114.2A CN201210058114A CN103313196B CN 103313196 B CN103313196 B CN 103313196B CN 201210058114 A CN201210058114 A CN 201210058114A CN 103313196 B CN103313196 B CN 103313196B
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Abstract
The invention provides a kind of SPS Activiation method, base station and trunked communication system.Wherein method comprises: the current base station in current area periodically sends the SPS activation command for the target group set up in the first time period preset to described current area, and stops sending described SPS activation command after described first time period terminates; Described current base station according to the target group mark of carrying in the handover request sent from adjacent cell, by from adjacent cell, the UE be switched in described current area adds and identifies in corresponding described target group with described target group; Described current base station periodically sends described SPS activation command to described current area within second time period of presetting, and stops sending described SPS activation command after described second time period terminates.The present invention can either reduce the transmission frequency of SPS activation command, can shorten again the time delay of monitoring users access group service.
Description
Technical field
The present invention relates to a kind of SPS Activiation method, base station and trunked communication system, (LongTermEvolution is called for short: LTE) private network trunking communicating technology field to belong to Long Term Evolution.
Background technology
In LTE system, (Semi-PersistentScheduling is called for short: SPS) technology to introduce a kind of new scheduling mode-semi-persistent scheduling for IP phone (VoIP) business.Semi-persistent scheduling mode refers in the scheduled transmission process of LTE, base station (is called for short: eNB) pass through Physical Downlink Control Channel (PhysicalDownlinkControlChannel in initial schedule, be called for short: PDCCH) equipment for indicating user (UserEquipment, be called for short: UE) current schedule information, it is semi-persistent scheduling that UE identifies, then preserve current schedule information, and carry out transmission or the reception of this business datum on the identical running time-frequency resource position that dispatching command is specified.By SPS mode, can make full use of the feature that voice packets periodically arrives, once authorize, the cycle uses, and effectively can save LTE system for dispatching the PDCCH resource of instruction.
In the group service of LTE private network trunked communication system, user is divided into speaker user and monitoring users, speaker user has special wireless heterogeneous networks (RadioResourceControl, be called for short: RRC) signal deployment, when the configuration of the ascending physical signal resource of speaker user adopts above-mentioned SPS mode, because in a group service, speaker user generally only has one, the activation of up SPS and release adopt existing LTE method just can support.But the situation of monitoring users is different from speaker user, the descending general employing SPS mode of group service, and the resource of descending SPS does not discharge when group does not close, this mainly in order to save the SPS activation command of eating dishes without rice or wine in support group situation, correspondingly reduces and to discharge continually group service SPS resource and to activate the complexity brought.Monitoring users is after adding group, the RRC of configure dedicated is not had when there is no other Point-to-Point Data business (PS), user and core net determine the group at oneself place alternately after, by the broadcast signaling of system, after particularly obtaining resource allocation information by common signal channel, such as group paging control channel (GroupPagingControlChannel, be called for short: GPCCH), after obtaining the activation group resource allocation information at user place, user adopts default group's resource distribution, and obtain the concrete physical address of the SPS of descending distribution by SPS activation command, carry out the monitoring of group service.
After group sets up, if base station only sends a SPS activation command, then, only before this SPS activation command issues, the monitoring users having added group can monitor the group service issued, after missing current SPS activation command, monitoring users just can not monitor group service; The settling mode of prior art is continuing for some time periodically transmission SPS activation command continuously for this reason.
But, SPS activation command will be configured on public search space and send, periodically sending SPS activation command continuously can take natively than the public search space of anxiety, thus cause periodic SPS activation command can fight for the situation of public search space with system information broadcast module message (SI-RNTI), beep-page message (P-RNTI), common uplink power control commands (TPC-PUCCH-RNTI, TPC-PUSCH-RNTI), multi-upstream access message (RA-RNTI) etc.
And, if the transmission frequency of SPS activation command is excessive, then can take too much public search space; If the transmission frequency of contrary SPS activation command is too small, the time of monitoring users access group service can be extended, affect user's impression.
Summary of the invention
The invention provides a kind of SPS Activiation method, base station and trunked communication system, in order to reasonably to adjust the transmission opportunity of SPS activation command, reduce taking public search space.
One aspect of the present invention provides a kind of SPS Activiation method, comprising:
Current base station in current area periodically sends the SPS activation command for the target group set up in the first time period preset to described current area, and stops sending described SPS activation command after described first time period terminates;
Described current base station according to the target group mark of carrying in the handover request sent from adjacent cell, by from adjacent cell, the UE be switched in described current area adds and identifies in corresponding described target group with described target group;
Described current base station periodically sends described SPS activation command to described current area within second time period of presetting, and stops sending described SPS activation command after described second time period terminates.
The present invention provides a kind of base station on the other hand, as current base station in current area, comprising:
First sending module, for periodically sending the SPS activation command for the target group set up in the first time period preset to described current area, and stops sending described SPS activation command after described first time period terminates;
Handover module, for according to the target group mark of carrying from the handover request that adjacent cell is sent, by from adjacent cell, the UE be switched in described current area adds and identifies in corresponding described target group with described target group;
Second sending module, for periodically sending described SPS activation command to described current area within second time period of presetting, and stops sending described SPS activation command after described second time period terminates.
Further aspect of the present invention provides a kind of trunked communication system, comprises above-mentioned base station as being arranged in the current base station of current area, the adjacent base station being arranged in adjacent cell and UE, wherein:
Described adjacent base station comprises: the 3rd sending module, before joining in described target group, sends to the described UE being arranged in described adjacent cell the message carrying measurement configuration information for the handover module in described current base station by described UE; Handover request module, for when determining to switch described UE according to the measurement report coming from described UE, sends the handover request carrying described target group mark to described current base station through equipment of the core network according to described current cell identification;
Described UE comprises: cell measurement module, for carrying out cell measurement according to described measurement configuration information to described current area and adjacent cell; Measure reporting module, result for carrying out cell measurement when cell measurement module shows to measure gives the correct time, and reports the measurement report of the current cell identification carrying and be confirmed as Target cell and the target group being confirmed as target group mark to described adjacent base station
The present invention first suspends transmission SPS activation command, then just continue periodically to send SPS activation command when detecting that the new user come from adjacent cell switching adds group, therefore by reasonably adjusting the transmission opportunity of SPS activation command, the transmission frequency of SPS activation command can either be reduced, thus the occupancy reduced public search space, the time delay of monitoring users access group service can be shortened again, thus ensure good user's impression.
Accompanying drawing explanation
Fig. 1 is the flow chart of SPS Activiation method embodiment of the present invention;
The optional flow chart that Fig. 2 is step 200 shown in Fig. 1;
Fig. 3 in step 230 shown in Fig. 2 about set up RRC connect signalling interactive process schematic diagram;
Fig. 4 is the structural representation of trunked communication system embodiment of the present invention.
Embodiment
Fig. 1 is the flow chart of SPS Activiation method embodiment of the present invention, as shown in the figure, comprises the steps:
Step 100, the current base station in current area periodically sends the SPS activation command for the target group set up in the first time period preset to described current area, and stops sending described SPS activation command after described first time period terminates.
Wherein, described current area refers to the community at described current base station place; Described target group is the group that will carry out SPS activation; Described first time period can be such as 1s; The concrete transmission cycle can be such as 20ms, 40ms or 80ms; Described current base station is such as that (evolvedNodeB is called for short: eNodeB) evolved Node B.
By periodically sending SPS activation command in this step, make the UE having added target group in current area in first time period, group service can be accessed in time.
Step 200, described current base station according to the target group mark of carrying in the handover request sent from adjacent cell, by from adjacent cell, the UE be switched in described current area adds and identifies in corresponding described target group with described target group.
Wherein, the UE described in this step refers to the UE be switched to from adjacent cell current area; Described target group mark refers to that described UE is switched to the mark wanting the group added after in current area, uniquely can determine a group according to this mark, and in the present embodiment, this mark corresponds to the described target group mentioned in step 100.The detailed process of this step will be introduced in subsequent content.
Step 300, described current base station periodically sends described SPS activation command to described current area within second time period of presetting, and stops sending described SPS activation command after described second time period terminates.
Wherein, described second time period can be a few tens of milliseconds or hundreds of millisecond.By previous step 200, current base station learns that switching from adjacent cell the new UE come will add the described target group set up, now the SPS activation command interrupting sending is proceeded periodically to send, make the UE newly adding target group can access group service in time.
Method described in the present embodiment first suspends transmission SPS activation command, then just continue periodically to send SPS activation command when detecting that the new user come from adjacent cell switching adds target group, therefore by reasonably adjusting the transmission opportunity of SPS activation command, the transmission frequency of SPS activation command can either be reduced, thus the occupancy reduced public search space, the time delay of monitoring users access group service can be shortened again, thus ensure good user's impression.
Below the detailed process of above-mentioned steps 200 is introduced in detail.
As shown in Figure 2, mention in description of step 200 to send the detailed process of described handover request from adjacent cell as follows:
Step 210, the adjacent base station of described adjacent cell sends the message carrying measurement configuration information to described UE.
In this step, described UE is not yet switched in current area from adjacent cell; Particularly, the different conditions for UE can have send modes different as follows:
Mode one: described adjacent base station sends to the described UE being in connected state the RRC signaling message carrying measurement configuration information.
Wherein, described connected state refers to described UE has established RRC and is connected state with the adjacent base station in adjacent cell, and in this case, measurement configuration information can be carried in RRC signaling message and send to UE by adjacent base station.
Mode two: described adjacent base station carries the beep-page message of measurement configuration information to the described UE broadcast transmission being in Idle state.
Wherein, described Idle state refers to that described UE is in the state do not set up RRC with adjacent base station and be connected, and in Idle state, UE cannot receive RRC signaling message; Described beep-page message is specially the system information block type (SystemInformationBlockType carrying described measurement configuration information, be called for short: SIB) 20 system messages, this SIB20 system message is a kind of cell (InformationElement increased on existing LTE protocol basis, be called for short: IE) message, its concrete definition is such as:
Wherein, " measConfig " represents described measurement configuration information.
Step 220, described UE carries out cell measurement according to described measurement configuration information to described current area and adjacent cell.
Wherein, described adjacent cell refers to the community adjacent with described current area, in the present invention, base station in current area is called " current base station ", base station in adjacent cell is called " adjacent base station ", when UE is switched to current area from adjacent cell, adjacent base station is as source base station, and current base station is as target BS.Concrete cell measurement procedure can carry out according to the content of defined in measurement configuration information.
Step 230, gives the correct time when the result of cell measurement shows to measure, and described UE reports the measurement report of the current cell identification carrying and be confirmed as Target cell and the target group being confirmed as target group mark to described adjacent base station.
Wherein, described Target cell refers to and refers to current area in the present embodiment in the community that described UE will be switched to; Described current cell identification refers to the mark for uniquely identifying described current area; It is point to adjacent base station reporting measurement reports that described measurement reports, such as, by carrying out above-mentioned cell measurement, can learn that described UE moves to the edge of adjacent cell and is about to enter into current area, now then need to carry out measurement to report, to be that cell merge is in the future prepared.
In order to triggering cell switches, UE needs to adjacent base station reporting measurement reports, but measurement report only could realize uploading on the basis establishing RRC connection, particularly:
In the situation described in aforesaid way one, described UE can report described measurement report based on being connected with the RRC set up between described adjacent base station to adjacent base station.
In the situation described in aforesaid way two, UE is also in Idle state, therefore described UE will set up RRC with described adjacent base station in this step and is connected thus becomes connected state, then reports described measurement report based on being connected with the RRC set up between described adjacent base station to described adjacent base station.Wherein about setting up the signalling interactive process of RRC connection as shown in Figure 3, the step of connection establishment and the step of initial safe activation and radio bearer foundation can be comprised, owing to being prior art, repeat no more herein.
In addition, due to above-mentioned two kinds of modes can be adopted, measurement configuration information is transferred to UE, therefore can comprise at described measurement report the measurement mark that described message carries further, mark is measured by increasing in measurement report, adjacent base station can be distinguished, to carry out suitable process to the measurement report for different modes.
Step 240, when described adjacent base station is determined to switch described UE according to described measurement report, sends the handover request carrying described target group mark to described current base station through equipment of the core network according to described current cell identification.
Particularly, handover request first can be sent to equipment of the core network by adjacent base station, and then sends handover request by equipment of the core network to described current base station.
Fig. 4 is the structural representation of trunked communication system embodiment of the present invention, with to implement the above described method, as shown in the figure, this system comprises: the current base station 10 being arranged in current area, the adjacent base station 20 being arranged in adjacent cell and UE30, and its operation principle is as follows:
First sending module 11 of current base station 10 periodically sends the SPS activation command for the target group set up in the first time period preset to described current area, and stops sending described SPS activation command after described first time period terminates.
Before making the switch, adjacent base station 20 sends to the described UE30 being arranged in described adjacent cell the message carrying measurement configuration information by the 3rd sending module 21; Described UE30 carries out cell measurement according to described measurement configuration information to described current area and adjacent cell by cell measurement module 31; The result of carrying out cell measurement when cell measurement module 31 shows to measure gives the correct time, and to report the measurement report of the current cell identification carrying and be confirmed as Target cell and the target group being confirmed as target group mark by measuring reporting module 32 to described adjacent base station 20; When the handover request module 22 of adjacent base station 20 is determined to switch described UE30 according to described measurement report, send the handover request carrying described target group mark to described current base station through equipment of the core network (not shown) according to described current cell identification.
After this, the handover module 12 in current base station 10 according to the target group mark of carrying in the handover request sent from adjacent cell, by from adjacent cell, the UE30 be switched in described current area adds and identifies in corresponding described target group with described target group; Then within second time period of presetting, periodically send described SPS activation command to described current area by the second sending module 13, and stop sending described SPS activation command after described second time period terminates.
System described in the present embodiment first suspends transmission SPS activation command, then just continue periodically to send SPS activation command when detecting that the new user come from adjacent cell switching adds target group, therefore by reasonably adjusting the transmission opportunity of SPS activation command, the transmission frequency of SPS activation command can either be reduced, thus the occupancy reduced public search space, the time delay of monitoring users access group service can be shortened again, thus ensure good user's impression.
In addition, when switching in triggering cell, the different conditions for UE can have processing modes different as follows:
When UE30 is in Idle state, carried the beep-page message of measurement configuration information to the described UE broadcast transmission being in Idle state by the 3rd sending module 21; The result of carrying out cell measurement when cell measurement module 31 shows to measure gives the correct time, first set up radio resource control RRC by measurement reporting module 32 with described adjacent cell to be connected, then connect based on the described RRC set up and report described measurement to report to described adjacent base station 20.
When UE30 is in connected state, described 3rd sending module 21 sends to the described UE30 being in connected state the RRC signaling message carrying measurement configuration information; The result of carrying out cell measurement when cell measurement module 31 shows to measure gives the correct time, and described measurement reporting module 32 reports described measurement report based on being connected with the RRC set up between described adjacent base station 20 to described adjacent base station 20.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a SPS Activiation method, is characterized in that, comprising:
Current base station in current area periodically sends the SPS activation command for the target group set up in the first time period preset to described current area, and stops sending described SPS activation command after described first time period terminates;
Described current base station according to the target group mark of carrying in the handover request sent from adjacent cell, by from adjacent cell, the UE be switched in described current area adds and identifies in corresponding described target group with described target group;
Described current base station periodically sends described SPS activation command to described current area within second time period of presetting, and stops sending described SPS activation command after described second time period terminates;
Described current base station identifies according to described target group, also comprises before being joined by described UE in described target group:
The adjacent base station of described adjacent cell sends the message carrying measurement configuration information to described UE;
Described UE carries out cell measurement according to described measurement configuration information to described current area and adjacent cell;
Give the correct time when the result of cell measurement shows to measure, described UE reports the measurement report of the current cell identification carrying and be confirmed as Target cell and the target group being confirmed as target group mark to described adjacent base station;
When described adjacent base station is determined to switch described UE according to described measurement report, send the handover request carrying described target group mark to described current base station through equipment of the core network according to described current cell identification.
2. method according to claim 1, it is characterized in that, described adjacent base station sends to described UE the message carrying measurement configuration information and comprises: described adjacent base station carries the beep-page message of measurement configuration information to the described UE broadcast transmission being in Idle state.
3. method according to claim 2, is characterized in that, described UE reports described measurement report to comprise:
Give the correct time when the result of cell measurement shows to measure, described UE sets up radio resource control RRC with described adjacent cell and is connected;
Described UE reports described measurement report based on described RRC connection to described adjacent base station.
4. method according to claim 2, is characterized in that, described beep-page message is the system information block type SIB20 system message carrying described measurement configuration information.
5. method according to claim 1, it is characterized in that, described adjacent base station sends to described UE the message carrying measurement configuration information and comprises: described adjacent base station sends to the described UE being in connected state the RRC signaling message carrying measurement configuration information.
6. method according to claim 5, is characterized in that, described UE reports described measurement report to comprise:
Described UE reports described measurement report based on being connected with the RRC set up between described adjacent base station to described adjacent base station.
7. the method according to any one of claim 1 ~ 6, is characterized in that, also comprises the measurement mark that described message is carried, described adjacent base station can be distinguished the measurement report for different modes in described measurement report.
8. a trunked communication system, comprises the current base station being arranged in current area, the adjacent base station being arranged in adjacent cell and UE, it is characterized in that,
Described current base station comprises:
First sending module, for periodically sending the SPS activation command for the target group set up in the first time period preset to described current area, and stops sending described SPS activation command after described first time period terminates;
Handover module, for according to the target group mark of carrying from the handover request that adjacent cell is sent, by from adjacent cell, the UE be switched in described current area adds and identifies in corresponding described target group with described target group;
Second sending module, for periodically sending described SPS activation command to described current area within second time period of presetting, and stops sending described SPS activation command after described second time period terminates;
Described adjacent base station comprises:
3rd sending module, before joining in described target group, sends to the described UE being arranged in described adjacent cell the message carrying measurement configuration information for the handover module in described current base station by described UE;
Handover request module, for when determining to switch described UE according to the measurement report coming from described UE, sends the handover request carrying described target group mark to described current base station through equipment of the core network according to described current cell identification;
Described UE comprises:
Cell measurement module, for carrying out cell measurement according to described measurement configuration information to described current area and adjacent cell;
Measure reporting module, result for carrying out cell measurement when cell measurement module shows to measure gives the correct time, and reports the measurement report of the current cell identification carrying and be confirmed as Target cell and the target group being confirmed as target group mark to described adjacent base station.
9. system according to claim 8, is characterized in that:
Described 3rd sending module is used for the beep-page message carrying measurement configuration information to the described UE broadcast transmission being in Idle state;
Described measurement reporting module shows to measure for the result of carrying out cell measurement when cell measurement module gives the correct time, set up radio resource control RRC with described adjacent cell to be connected, and set up based on resource described RRC that unit sets up and connect and report described measurement report to described adjacent base station.
10. system according to claim 8, is characterized in that:
The described UE that described 3rd sending module is used for being in connected state sends the RRC signaling message carrying measurement configuration information;
Described measurement reporting module is used for reporting described measurement report based on being connected with the RRC set up between described adjacent base station to described adjacent base station.
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| CN104754754B (en) * | 2013-12-26 | 2018-02-27 | 普天信息技术研究院有限公司 | Delay access method under semi-persistent scheduling |
| CN106470399B (en) * | 2015-08-14 | 2019-08-23 | 普天信息技术有限公司 | The method and system of semi-continuous scheduling reactivation in cluster multi call business |
| CN106470496B (en) * | 2015-08-14 | 2019-09-06 | 普天信息技术有限公司 | The method and system of semi-continuous scheduling reactivation based on cell switching |
| CN108012287B (en) * | 2017-12-13 | 2021-02-19 | 武汉虹信科技发展有限责任公司 | Method and system for realizing cluster service continuity |
| CN111699722B (en) * | 2018-02-09 | 2023-08-25 | Lg电子株式会社 | Method for operating in idle mode and apparatus using the same |
| EP3777410A4 (en) | 2018-03-29 | 2021-02-17 | Telefonaktiebolaget LM Ericsson (publ) | Network node and method in a wireless communications network |
| CN113543039B (en) * | 2020-04-22 | 2022-06-10 | 成都鼎桥通信技术有限公司 | Multicast signal sending method and device |
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