CN103313196A - SPS activation method, base station and cluster communication system - Google Patents
SPS activation method, base station and cluster communication system Download PDFInfo
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- CN103313196A CN103313196A CN2012100581142A CN201210058114A CN103313196A CN 103313196 A CN103313196 A CN 103313196A CN 2012100581142 A CN2012100581142 A CN 2012100581142A CN 201210058114 A CN201210058114 A CN 201210058114A CN 103313196 A CN103313196 A CN 103313196A
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Abstract
The invention provides an SPS activation method, a base station and a cluster communication system. The method comprises the following steps: a current base station in a current cell periodically sends an SPS activation command aiming at an established target group to the current cell in a preset first period of time and stops sending the SPS activation command after the first period of time; the current base station, according to a target group identifier carried in a switching request sent from an adjacent cell, adds UE switched from the adjacent cell to the current cell into the target group corresponding to the target group identifier; and the current base station periodically sends the SPS activation command to the current cell in a preset second period of time and stops sending the SPS activation command after the second period of time. According to the invention, the transmission frequency of the SPS activation command can be reduced, and time delay for accessing monitoring users to group services can be shortened.
Description
Technical field
The present invention relates to a kind of SPS Activiation method, base station and trunked communication system, (Long Term Evolution is called for short: LTE) private network trunking communicating technology field to belong to Long Term Evolution.
Background technology
In the LTE system, (Semi-Persistent Scheduling is called for short: SPS) technology to have introduced a kind of new scheduling mode-semi-persistent scheduling for IP phone (VoIP) business.The semi-persistent scheduling mode refers in the scheduled transmission process of LTE, (be called for short: eNB) pass through Physical Downlink Control Channel (Physical Downlink Control Channel in initial schedule the base station, be called for short: PDCCH) indication subscriber equipment (User Equipment, be called for short: UE) current schedule information, UE identification is semi-persistent scheduling, then preserve current schedule information, and carry out transmission or the reception of this business datum in the identical running time-frequency resource position of dispatching command appointment.By the SPS mode, can take full advantage of the characteristics that voice packets periodically arrives, once to authorize, the cycle uses, and can effectively save the PDCCH resource that the LTE system is used for the scheduling indication.
In the group service of LTE private network trunked communication system, the user is divided into speaker user and monitoring users, speaker user has special-purpose Radio Resource control (Radio Resource Control, be called for short: RRC) signaling configuration, when above-mentioned SPS mode is adopted in the configuration of speaker user's ascending physical signal resource, because speaker user generally has only one in a group service, the activation of up SPS and release adopt the 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 under the situation that group does not close, this mainly is in order to support to save the SPS activation command of eating dishes without rice or wine under group's situation, correspondingly reduces group service SPS resource is discharged continually and activates the complexity of bringing.Monitoring users is after adding group, the RRC that under the situation of the Point-to-Point Data business (PS) that does not have other, does not have configure dedicated, after the group at mutual definite own place of user and core net, broadcast signaling by system, concrete is after obtaining resource allocation information by common signal channel, such as group paging control channel (Group Paging Control Channel, be called for short: GPCCH), after obtaining the activation group resource allocation information at user place, the user adopts default group's resource distribution, and obtain the concrete physical address of SPS of descending distribution by the SPS activation command, carry out the monitoring of group service.
After group sets up, if the base station only sends the SPS activation command one time, then only before this SPS activation command issues, the monitoring users that has added group can be monitored the group service that issues, after missing current SPS activation command, monitoring users just can not be monitored group service; The settling mode of prior art is to continue for some time intercycle ground transmission SPS activation command continuously for this reason.
Yet, the SPS activation command will be configured on the common search space and send, periodically sending the SPS activation command continuously can take original just than the common search space of anxiety, thereby cause periodic SPS activation command can with system information broadcast module message (SI-RNTI), beep-page message (P-RNTI), common uplink power control commands (TPC-PUCCH-RNTI, TPC-PUSCH-RNTI), up access message (RA-RNTI) etc. fights for the situation in common search space.
And, if the transmission frequency of SPS activation command is excessive, then can take too much common search space; If the transmission frequency of opposite SPS activation command is too small, can prolong the time that monitoring users inserts group service, influence 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 the common search space.
One aspect of the present invention provides a kind of SPS Activiation method, comprising:
Current base station in the current area periodically sends SPS activation command at the target group of having set up to described current area in default very first time section, and stops to send described SPS activation command after described very first time section finishes;
Described current base station is according to the target group sign of carrying from the handover request that send adjacent residential quarter, and the UE that will switch to from adjacent residential quarter the described current area adds in the described target group corresponding with described target group sign;
Described current base station periodically sends described SPS activation command to described current area in the second default time period, and stops to send described SPS activation command after described second time period finishes.
The present invention provides a kind of base station on the other hand, in current area as current base station, comprising:
First sending module is used in default very first time section periodically sending SPS activation command at the target group of having set up to described current area, and stops to send described SPS activation command after described very first time section finishes;
Handover module, the target group that is used for carrying according to the handover request of sending from adjacent residential quarter identifies, and the UE that will switch to from adjacent residential quarter the described current area adds in the described target group corresponding with described target group sign;
Second sending module was used for periodically sending described SPS activation command to described current area in the second default time period, and stopped to send described SPS activation command after described second time period finishes.
Further aspect of the present invention provides a kind of trunked communication system, comprises that above-mentioned base station is as being arranged in the current base station of current area, the adjacent base station that is arranged in adjacent residential quarter and UE, wherein:
Described adjacent base station comprises: the 3rd sending module, be used for before the handover module of described current base station joins described target group with described UE, and send the message that carries measurement configuration information to the described UE that is arranged in described adjacent residential quarter; The handover request module is used for when determining to switch described UE according to the measurement report that comes from described UE, sends the handover request that carries described target group sign according to described current area sign to described current base station through equipment of the core network;
Described UE comprises: the cell measurement module is used for according to described measurement configuration information described current area and adjacent residential quarter being carried out cell measurement; Measure reporting module, be used for giving the correct time when result that the cell measurement module is carried out cell measurement shows to measure, report the measurement report that carries the current area sign that is confirmed as Target cell and the target group sign that is confirmed as target group to described adjacent base station
The present invention suspends transmission SPS activation command earlier, when adding group, the next new user of adjacent residential quarter switching just continues periodically to send the SPS activation command when detecting then, therefore by reasonably adjusting the transmission opportunity of SPS activation command, can either reduce the transmission frequency of SPS activation command, thereby reduce the occupancy to the common search space, can shorten the time delay that monitoring users inserts group service again, thereby guarantee good user's impression.
Description of drawings
Fig. 1 is the flow chart of SPS Activiation method embodiment of the present invention;
Fig. 2 is the optional flow chart of step 200 shown in Figure 1;
Fig. 3 is the relevant signalling interactive process schematic diagram of setting up the RRC connection in the step 230 shown in Figure 2;
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:
Wherein, described current area refers to the residential quarter at described current base station place; Described target group is to carry out the group that SPS activates; Described very first time section for example can be 1s; The concrete transmission cycle for example can be 20ms, 40ms or 80ms; Described current base station for example is that (evolved Node B is called for short: eNodeB) evolved Node B.
By periodically sending the SPS activation command in this step, make the UE that has added target group in the current area can in very first time section, in time insert group service.
Wherein, the UE described in this step refers to switch to from adjacent residential quarter the UE the current area; Described target group sign refers to want after described UE switches in the current area sign of the group that adds, can uniquely determine a group according to this sign, and in the present embodiment, this sign is corresponding to the described target group of mentioning in the step 100.The detailed process of this step will be introduced in subsequent content.
Wherein, described second time period can be a few tens of milliseconds or hundreds of millisecond.By step 200 before, current base station learns that switching the new UE that comes from adjacent residential quarter will add the described target group of having set up, the SPS activation command that will interrupt sending this moment is proceeded periodically to send, and makes the new UE that adds target group can in time insert group service.
The described method of present embodiment is suspended transmission SPS activation command earlier, when adding target group, the next new user of adjacent residential quarter switching just continues periodically to send the SPS activation command when detecting then, therefore by reasonably adjusting the transmission opportunity of SPS activation command, can either reduce the transmission frequency of SPS activation command, thereby reduce the occupancy to the common search space, can shorten the time delay that monitoring users inserts group service again, thereby guarantee good user's impression.
Below introduce the detailed process of above-mentioned steps 200 in detail.
As shown in Figure 2, the detailed process of mentioning in the description of step 200 of sending described handover request from adjacent residential quarter is as follows:
In this step, described UE does not switch in the current area from adjacent residential quarter as yet; Particularly, the different conditions at UE can have following different send mode:
Mode one: described adjacent base station sends the RRC signaling message that carries measurement configuration information to the described UE that is in connected state.
Wherein, described connected state refer to described UE with adjacent residential quarter in adjacent base station set up the state that RRC is connected, under this state, adjacent base station can be carried on measurement configuration information in the RRC signaling message and send to UE.
Mode two: described adjacent base station carries the beep-page message of measurement configuration information to the described UE broadcast transmission that is in Idle state.
Wherein, described Idle state refers to that described UE is in not setting up the state that RRC is connected with adjacent base station, and in Idle state, UE can't receive the RRC signaling message; Described beep-page message is specially system information block type (the System Information Block Type that carries described measurement configuration information, be called for short: SIB) 20 system messages, this SIB20 system message is a kind of cell (the Information Element that increases on existing LTE agreement basis, be called for short: IE) message, its concrete definition for example is:
Wherein, " measConfig " represents described measurement configuration information.
Wherein, described adjacent residential quarter refers to the residential quarter adjacent with described current area, in the present invention, base station in the current area is called " current base station ", base station in the adjacent residential quarter is called " adjacent base station ", when adjacent residential quarter switched to the current area, adjacent base station was as source base station at UE, and current base station is as target BS.Concrete cell measurement process can be carried out according to the content of defined in the measurement configuration information.
Wherein, described Target cell refers to the residential quarter that described UE will switch to, and refers to current area in the present embodiment; Described current area sign refers to the sign for the described current area of unique identification; It is to point to the adjacent base station reporting measurement reports that described measurement reports, for example, by carrying out above-mentioned cell measurement, can learn that described UE moves to the edge of adjacent residential quarter and is about to enter into current area, then need to measure to report this moment, prepares in order to switch for residential quarter in the future.
For triggering cell is switched, UE need be to the adjacent base station reporting measurement reports, yet measurement report only could be realized on the RRC connection basis uploading having set up, particularly:
In aforesaid way one described situation, described UE can based on described adjacent base station between the RRC that set up be connected to adjacent base station and report described measurement report.
In aforesaid way two described situations, UE also is in Idle state, therefore thereby described UE will be in this step sets up RRC with described adjacent base station and is connected and becomes connected state, then based on described adjacent base station between the RRC that set up be connected to described adjacent base station and report described measurement report.Wherein relevantly set up signalling interactive process that RRC connects as shown in Figure 3, can comprise connecting the step of setting up and the step that initial safe activates and radio bearer is set up, owing to be prior art, repeat no more herein.
In addition, owing to can adopt above-mentioned dual mode that measurement configuration information is transferred to UE, therefore can in described measurement report, further comprise the measurement sign that described message is carried, measure sign by in measurement report, increasing, make adjacent base station to be distinguished the measurement report at different modes, in order to carry out suitable processing.
Particularly, adjacent base station can send to equipment of the core network with handover request earlier, 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, in order to realize said method, as shown in the figure, this system comprises: be arranged in current area current base station 10, be arranged in adjacent base station 20 and the UE30 of adjacent residential quarter, its operation principle is as follows:
First sending module 11 of current base station 10 periodically sends SPS activation command at the target group of having set up to described current area in default very first time section, and stops to send described SPS activation command after described very first time section finishes.
Before switching, adjacent base station 20 sends the message that carries measurement configuration information by the 3rd sending module 21 to the described UE30 that is arranged in described adjacent residential quarter; Described UE30 carries out cell measurement according to described measurement configuration information to described current area and adjacent residential quarter by cell measurement module 31; Give the correct time when result that cell measurement module 31 is carried out cell measurement shows to measure, report the measurement report that carries the current area sign that is confirmed as Target cell and the target group sign that is confirmed as target group to described adjacent base station 20 by measuring reporting module 32; 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 that carries described target group sign according to described current area sign to described current base station through the equipment of the core network (not shown).
After this, the handover module 12 in the current base station 10 is according to the target group sign of carrying from the handover request that send adjacent residential quarter, and the UE30 that will switch to from adjacent residential quarter the described current area adds in the described target group corresponding with described target group sign; In the second default time period, periodically send described SPS activation command to described current area by second sending module 13 then, and after described second time period finishes, stop to send described SPS activation command.
The described system of present embodiment suspends transmission SPS activation command earlier, when adding target group, the next new user of adjacent residential quarter switching just continues periodically to send the SPS activation command when detecting then, therefore by reasonably adjusting the transmission opportunity of SPS activation command, can either reduce the transmission frequency of SPS activation command, thereby reduce the occupancy to the common search space, can shorten the time delay that monitoring users inserts group service again, thereby guarantee good user's impression.
In addition, when triggering cell is switched, at the different conditions of UE following different processing mode can be arranged:
When UE30 is in Idle state, carried the beep-page message of measurement configuration information to the described UE broadcast transmission that is in Idle state by the 3rd sending module 21; When showing to measure, result that cell measurement module 31 is carried out cell measurement gives the correct time, set up radio resource control RRC by measurement reporting module 32 with described adjacent residential quarter earlier and be connected, report described measurement newspaper based on the described RRC connection of having set up to described adjacent base station 20 then.
When UE30 was in connected state, described the 3rd sending module 21 sent the RRC signaling message that carries measurement configuration information to the described UE30 that is in connected state; Give the correct time when result that cell measurement module 31 is carried out cell measurement shows to measure, described measurement reporting module 32 based on described adjacent base station 20 between the RRC that set up be connected to described adjacent base station 20 and report described measurement report.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (12)
1. a SPS Activiation method is characterized in that, comprising:
Current base station in the current area periodically sends SPS activation command at the target group of having set up to described current area in default very first time section, and stops to send described SPS activation command after described very first time section finishes;
Described current base station is according to the target group sign of carrying from the handover request that send adjacent residential quarter, and the UE that will switch to from adjacent residential quarter the described current area adds in the described target group corresponding with described target group sign;
Described current base station periodically sends described SPS activation command to described current area in the second default time period, and stops to send described SPS activation command after described second time period finishes.
2. method according to claim 1 is characterized in that, described current base station identifies according to described target group, described UE is joined in the described target group also comprise before:
The adjacent base station of described adjacent residential quarter sends the message that carries measurement configuration information to described UE;
Described UE carries out cell measurement according to described measurement configuration information to described current area and adjacent residential quarter;
Give the correct time when the result of cell measurement shows to measure, described UE reports the measurement report that carries the current area sign that is confirmed as Target cell and the target group sign that is confirmed as target group 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 that carries described target group sign according to described current area sign to described current base station through equipment of the core network.
3. method according to claim 2, it is characterized in that described adjacent base station sends the message that carries measurement configuration information to described UE and comprises: described adjacent base station carries the beep-page message of measurement configuration information to the described UE broadcast transmission that is in Idle state.
4. method according to claim 3 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 residential quarter and is connected;
Described UE reports described measurement report based on described RRC connection to described adjacent base station.
5. method according to claim 3 is characterized in that, described beep-page message is the system information block type SIB20 system message that carries described measurement configuration information.
6. method according to claim 2, it is characterized in that described adjacent base station sends the message that carries measurement configuration information to described UE and comprises: described adjacent base station sends the RRC signaling message that carries measurement configuration information to the described UE that is in connected state.
7. method according to claim 6 is characterized in that, described UE reports described measurement report to comprise:
Described UE based on described adjacent base station between the RRC that set up be connected to described adjacent base station and report described measurement report.
8. according to each described method in the claim 2～7, it is characterized in that, also comprise the measurement sign that described message is carried in the described measurement report, make described adjacent base station to be distinguished the measurement report at different modes.
9. a base station as current base station, is characterized in that in current area, comprising:
First sending module is used in default very first time section periodically sending SPS activation command at the target group of having set up to described current area, and stops to send described SPS activation command after described very first time section finishes;
Handover module, the target group that is used for carrying according to the handover request of sending from adjacent residential quarter identifies, and the UE that will switch to from adjacent residential quarter the described current area adds in the described target group corresponding with described target group sign;
Second sending module was used for periodically sending described SPS activation command to described current area in the second default time period, and stopped to send described SPS activation command after described second time period finishes.
10. a trunked communication system comprises that the described base station of claim 9 as being arranged in the current base station of current area, the adjacent base station that is arranged in adjacent residential quarter and UE, is characterized in that,
Described adjacent base station comprises:
The 3rd sending module was used for before the handover module of described current base station joins described target group with described UE, sent the message that carries measurement configuration information to the described UE that is arranged in described adjacent residential quarter;
The handover request module is used for when determining to switch described UE according to the measurement report that comes from described UE, sends the handover request that carries described target group sign according to described current area sign to described current base station through equipment of the core network;
Described UE comprises:
The cell measurement module is used for according to described measurement configuration information described current area and adjacent residential quarter being carried out cell measurement;
Measure reporting module, be used for giving the correct time when result that the cell measurement module is carried out cell measurement shows to measure, report the measurement report that carries the current area sign that is confirmed as Target cell and the target group sign that is confirmed as target group to described adjacent base station.
11. system according to claim 10 is characterized in that:
Described the 3rd sending module is used for carrying to the described UE broadcast transmission that is in Idle state the beep-page message of measurement configuration information;
Described measurement reporting module shows to measure for the result who carries out cell measurement when the cell measurement module gives the correct time, set up radio resource control RRC with described adjacent residential quarter and be connected, and set up the described RRC that sets up the unit based on resource and connect and report described measurement report to described adjacent base station.
12. system according to claim 10 is characterized in that:
Described the 3rd sending module is used for sending the RRC signaling message that carries measurement configuration information to the described UE that is in connected state;
Described measurement reporting module be used for based on described adjacent base station between the RRC that set up be connected to described adjacent base station and report described measurement report.
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| CN103313196B (en) | 2016-02-03 |
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