CN102300164B - Triggering method and triggering equipment - Google Patents
Triggering method and triggering equipment Download PDFInfo
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- CN102300164B CN102300164B CN2010102078233A CN201010207823A CN102300164B CN 102300164 B CN102300164 B CN 102300164B CN 2010102078233 A CN2010102078233 A CN 2010102078233A CN 201010207823 A CN201010207823 A CN 201010207823A CN 102300164 B CN102300164 B CN 102300164B
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Abstract
The embodiment of the invention discloses a triggering method and triggering equipment. The triggering method comprises the following steps of: determining terminals currently required to be triggered, wherein each terminal simultaneously belongs to at least two groups; counting the number of the terminals currently required to be triggered in each group; selecting a group with a greatest number of terminals currently required to be triggered as a triggering group; and transmitting triggering information according to the selected triggering group. By the scheme, the terminals required to be triggered can be informed by using the groups in a number which is as great as possible as many as possible; and compared with the prior art, the invention uses relatively fewer groups in the same scene, so the number of required physical downlink control channels (PDCCH) is relatively less, namely the overhead of the PDCCH can be reduced by the scheme.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of triggering method and trigger equipment.
Background technology
Optimizing Long Term Evolution (LTE-A, Long Term Evolution Advanced) in communication system, terminal need to be to evolution base station (eNB, E-UTRANNodeB) transmission measurement reference signal (SRS, Sounding Reference Signal), to help evolution base station to obtain uplink channel information, thereby realize the functions such as frequency selective scheduling and link circuit self-adapting.
In many antenna transmissions pattern, evolution base station need to be measured each antenna port of terminal, so each antenna port can periodically send SRS, this will certainly cause the shortage of SRS resource, and in fact many times terminal do not need to send SRS always, reduce resource requirement so prior art proposes to send SRS by dynamic aperiodicity, by evolution base station as the case may be, judge whether a terminal needs to send SRS.If necessary, evolution base station sends a trigger message by physical layer descending control channel (PDCCH, Physical Downlink Control Channel), and notification terminal sends SRS, and terminal sends SRS after being triggered.But, if having the terminal that sends the SRS demand to be triggered by a PDCCH separately to each, the expense of PDCCH can be very large.
For this problem, prior art proposes again the terminal in community is divided into groups, the terminal of same group has identical group identification, terminal in same group is distinguished with the numbering in group again, wherein, the corresponding PDCCH of each group, numbering according to terminal in group, each terminal has own corresponding information bit in PDCCH, like this, evolution base station only need send trigger message by a PDCCH, all terminals in the corresponding group of this PDCCH just can all be received this trigger message, then the terminal in group is again by the judgement of the PDCCH information bit used when sending this trigger message, just can determine and self whether be triggered, use the method, with respect to use a PDCCH to send the method for trigger message for each terminal, can significantly reduce the PDCCH expense.
In the research and practice process to prior art, the present inventor finds, if need the terminal quantity of triggering few, and is dispersed in each group, now still need to adopt a plurality of PDCCH, now adopt group's trigger method also not obvious with the advantage that reduces the PDCCH expense.Such as, if the terminal 1,2 and 3 need triggered lays respectively in group 1, group 2 and group 3, needing to send trigger message by 3 PDCCH, the quantity of the PDCCH that this uses with separately for each terminal transmission trigger message the time is the same.How to make a trigger message trigger terminal as much as possible, with the Trigger Efficiency that improves this trigger message, just become a problem.
Summary of the invention
The embodiment of the present invention provides a kind of triggering method and trigger equipment, can reduce all sidedly the expense of PDCCH.
A kind of triggering method comprises:
Determine the current terminal triggered that needs, wherein, each terminal all belongs at least two groups;
Add up the included current quantity that needs the terminal of triggering of each group;
Selection comprises that group that the quantity of the terminal that current needs trigger is maximum is as triggering group;
Send trigger message according to the triggering group of selecting.
A kind of trigger equipment comprises:
Determining unit, for determining the current terminal triggered that needs, wherein, each terminal all belongs at least two groups;
Statistic unit, for adding up the included current quantity that needs the terminal of triggering of being determined by determining unit of each group;
Selected cell, the maximum group of the quantity of the terminal of selecting for the statistics according to statistic unit to comprise that current needs trigger is as triggering group;
Trigger element, send trigger message for the triggering group of selecting according to selected cell.
In embodiments of the present invention, because each terminal all belongs at least two groups simultaneously, so, while in determining community, having terminal to trigger, the current quantity that needs the terminal of triggering that just can be included by each group of statistics, select to comprise that group that the quantity of the terminal that current needs trigger is maximum is as triggering group, make by a trigger message and can trigger the terminal that needs as much as possible trigger, due under equal scene, adopt this scheme to compare with adopting prior art, the group used is less, so the quantity of needed PDCCH is also relatively less, adopt this scheme can reduce the expense of PDCCH.
The accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, in below describing embodiment, the accompanying drawing of required use is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 a is the method flow diagram of the triggering method that provides of the embodiment of the present invention one;
Fig. 1 b is the schematic diagram of embodiment of the present invention grouping;
Fig. 1 c is the other method flow chart of the triggering method that provides of the embodiment of the present invention one
Fig. 2 is the method flow diagram of the triggering method that provides of the embodiment of the present invention two;
Fig. 3 is the method flow diagram of the triggering method that provides of the embodiment of the present invention three;
Fig. 4 a is the structural representation of the trigger equipment that provides of the embodiment of the present invention;
Fig. 4 b is another structural representation of the trigger equipment that provides of the embodiment of the present invention;
Fig. 4 c is the another structural representation of the trigger equipment that provides of the embodiment of the present invention;
Fig. 5 is the structural representation of the communication system that provides of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of triggering method and trigger equipment.Below be elaborated respectively.
Embodiment mono-,
The present embodiment will be described from the angle of trigger equipment, and this trigger equipment is specifically as follows evolution base station, or have other entities of similar functions.
A kind of triggering method, as shown in Figure 1a, idiographic flow can be as follows:
101, determine the current terminal triggered that needs, wherein, each terminal all belongs at least two groups simultaneously;
For example, referring to Fig. 1 b, there are 16 terminals in current area: terminal 1～16, be divided into 8 groups, wherein, group 1 comprises terminal 1～4, and group 2 comprises terminal 5～8, group 3 comprises terminal 9～12, group 4 comprises terminal 13～16, and group 5 comprises terminal 1, terminal 5, terminal 9 and terminal 13, and group 6 comprises terminal 2, terminal 6, terminal 10 and terminal 14, group 7 comprises terminal 3, terminal 7, terminal 11 and terminal 15, and group 8 comprises terminal 4, terminal 8, terminal 12 and terminal 16.Certainly, end packet specifically may have various ways, but also flexible configuration of the quantity of terminal in community, and this example is not used in restriction the present invention.
By top grouping, can be found out, each terminal belongs to two groups simultaneously, such as, terminal 1 belongs to group 1 and group 5 simultaneously, and terminal 2 belongs to group 2 and group 6 simultaneously, etc.
If now need triggering terminal 2, terminal 6, terminal 11 and terminal 14, trigger equipment determines that the current terminal triggered that needs is: terminal 2, terminal 6, terminal 11 and terminal 14.
102, add up the included current quantity that needs the terminal of triggering of each group;
For example, or the example of take in step 101 is example, if determined that in step 101 the current terminal triggered that needs is: terminal 2, terminal 6, terminal 11 and terminal 14, trigger equipment current the need quantity of the terminal of triggering included to each group according to definite terminal is added up, know that group 1～4 and group 7 have the terminal that 1 needs triggers, group 6 has the terminal that 3 needs trigger, and group 5 and group 8 do not need the terminal triggered.
The maximum group of the quantity of the terminal of 103, selecting to comprise that current needs trigger is as triggering group;
For example, if know that in step 102 group 1～4 and group 7 have the terminal that 1 needs triggers, group 6 has the terminal that 3 needs trigger, and group 5 and group 8 do not need the terminal triggered, in this step (being step 103), trigger equipment can determine that the quantity of the current terminal that need to trigger that group 6 is included is maximum, so trigger equipment selects group 6 as triggering groups.
It should be noted that, if there is the group of two or more " quantity that comprises the terminal that current needs trigger is maximum ", therefrom select arbitrarily a group as triggering group, the strategy of selecting can be random, also can be preset by carrying out.
104, send trigger message according to the triggering group of selecting, to trigger the terminal of the current needs triggering that this triggerings group comprises;
For example, if select group 6 as triggering group in step 103, in this step (being step 104), trigger equipment sends trigger message according to group 6, specifically can select the corresponding PDCCH of group 6 according to the group identification of group 6, the indication in the PDCCH selected of numbering according to terminal in group 6 needs the terminal triggered, such as, terminal 2, terminal 6 and the numbering of terminal 14 in group 6 are respectively 1, 2 and 4, their corresponding information bits in PDCCH are respectively the 1st, the 2nd and the 4th, if on information bit, " 1 " means to trigger, and " 0 " means not trigger, the PDCCH information now sent can be " 1101 ", so, terminals all in group 6 are after receiving this PDCCH information, just can determine self whether to need to trigger according to the numbering from group 6, such as, on the 1st information bit that terminal 2 is found in PDCCH information, be " 1 ", so determine and self need to trigger, and be " 0 " on the 3rd information bit that terminal 10 is found in PDCCH information, so determine and self do not need to trigger, the rest may be inferred, if determining, terminal self needs to trigger, send SRS to trigger equipment, otherwise, if do not need, do not trigger, be failure to actuate, specifically can be referring to prior art, do not repeat them here.
Optionally, as shown in Fig. 1 c, this triggering method can also comprise step 105;
105, judge whether the current terminal triggered that needs all triggers, if do not have the terminal not yet triggered, process ends; If there is the terminal not yet triggered, return and carry out the above-mentioned step of determining the current terminal that need to trigger, return to execution step 101～105;
For example, or step 101 to the example in step 104 of take is example, from step 104, owing to only having triggered group 6, so only have terminal 2, terminal 6 and terminal 14 are triggered, and terminal 11 not yet triggers, so, trigger equipment determines that the current terminal that need to trigger is terminal 11, trigger equipment current the need quantity of the terminal of triggering included to each group according to definite terminal is added up, know group 1～2, group 4～6 and group 8 all do not need the terminal triggered, group 3 and group 7 have the terminal that 1 needs triggers, it is terminal 11, because the included current quantity of the terminal of triggering that needs of group 3 and group 7 equates (being all 1), so can select group 3 as triggering group, also can select group 7 as triggering group, then send trigger message according to group 3 or group 7, after this, trigger equipment judges whether the current terminal triggered that needs all triggers again, due to terminal 2, terminal 6, terminal 11 and terminal 14 all trigger, so trigger equipment can be determined the current terminal triggered that needs and all trigger, so process ends.
As from the foregoing, in the present embodiment, because each terminal all belongs at least two groups simultaneously, so, while in determining community, having terminal to trigger, the current quantity that needs the terminal of triggering that just can be included by each group of statistics, select to comprise that group that the quantity of the terminal that current needs trigger is maximum is as triggering group, make by a trigger message and can trigger the terminal that needs as much as possible trigger, under equal scene, in terms of existing technologies, adopt this scheme can realize with PDCCH still less the purpose of triggering terminal, reduced the expense of PDCCH.It should be noted that, the concrete packet mode of terminal can have multiple and be not limited to accompanying drawing 1b, what accompanying drawing 1b was corresponding is the situation of two dimension grouping, be that each terminal belongs to 2 groupings, but in practical application, each terminal can also belong to 3 or more groupings, adopt the multidimensional grouping, by the multidimensional grouping, finding optimum triggering group, make the terminal that can notify needs as much as possible to trigger with few group that tries one's best, accompanying drawing 1b is only for explaining the present invention but not for limiting.
Embodiment bis-,
On the basis of embodiment mono-, optional, before step 101, trigger equipment can also be divided into groups to the terminal in community, and the advisory of dividing into groups is to terminal.For example, referring to Fig. 2, before step 101, can also comprise step 201 and 202, specific as follows:
201, trigger equipment is divided into groups to the terminal in community, obtains grouping information, makes each terminal belong at least two groups simultaneously, and wherein, this grouping information comprises group identification and the numbering of terminal in affiliated group of the group under terminal;
For example, referring to Fig. 1 b, if there are 16 terminals in current area: terminal 1～16, these 16 terminals can be carried out to the multidimensional grouping, such as these 16 terminals are divided into to 8 groups, make a terminal belong to two groups simultaneously, wherein, group 1 comprises terminal 1～4, group 2 comprises terminal 5～8, group 3 comprises terminal 9～12, group 4 comprises terminal 13～16, group 5 comprises terminal 1, terminal 5, terminal 9 and terminal 13, group 6 comprises terminal 2, terminal 6, terminal 10 and terminal 14, group 7 comprises terminal 3, terminal 7, terminal 11 and terminal 15, group 8 comprises terminal 4, terminal 8, terminal 12 and terminal 16.Wherein, there is corresponding group identification in each group, each terminal also has self (being terminal) numbering in affiliated group, terminal is after receiving trigger message, just can determine self whether to be triggered according to this numbering, such as, terminal 1 belongs to group 1 and group 5 simultaneously, wherein, terminal 1 is numbered 1 in group 1, terminal 1 is known if receive the PDCCH information for group 1 like this, the 1st information bit of PDCCH information is the trigger message for oneself, terminal 1 is numbered 1 in group 5, terminal 1 is known if receive the PDCCH information for group 5 like this, the 1st information bit of PDCCH information is the trigger message for oneself, again such as, terminal 2 belongs to group 1 and group 6 simultaneously, wherein, terminal 2 is numbered 2 in group 1, terminal 2 is known if receive the PDCCH information for group 2 like this, the 2nd information bit of PDCCH information is the trigger message for oneself, terminal 2 is numbered 1 in group 6, terminal 2 is known if receive the PDCCH information for group 6 like this, the 1st information bit of PDCCH information is the trigger message for oneself, etc..
202, trigger equipment notifies grouping information to terminal.
Be specifically as follows: trigger equipment by the group identification of the group of each terminal and each terminal the numbering in this group notify to terminal, such as, terminal 1 belongs to group 1 and group 5 simultaneously, and terminal 1 is numbered 1 in group 1, in group 5, is numbered 1, so, trigger equipment need to be by the group identification of group 1, and the group identification of group 5 notifies to terminal 1, and notification terminal 1 its be numbered 1 in group 1, and be numbered 1 in group 5, the like.
Terminal, after receiving this grouping information, need to be preserved this grouping information, so as follow-up receive trigger message after, can determine self (being terminal) whether to need to trigger according to this grouping information, about this point, specifically can, referring to prior art, not repeat them here.
Now, sending trigger message (being step 104) according to the triggering group of selecting specifically can comprise: according to the group identification that triggers group, select corresponding PDCCH; Numbering according to terminal in affiliated group indicates in the PDCCH selected needs the terminal triggered.
Such as, if needing triggering terminal is terminal 1, and in step 103, selected group 1 as triggering group, and the terminal that the group does not have other to trigger in 1, now can select corresponding PDCCH according to the group identification of group 1, then indicate 1000 in this PDCCH, , 4 terminals of this group, terminal 1, terminal 2, terminal 3 and terminal 4 all can receive this PDCCH information " 1000 ", terminal 1 is after receiving PDCCH information, according to the numbering 1 of preserving before self, first information bit finding PDCCH information is " 1 ", representative need to be triggered, so determine and self need to trigger, so send SRS to trigger equipment.And terminal 2～4 finds that the 2nd, 3 and 4 information bits are " 0 ", representative is not triggered, so do not send SRS.
It should be noted that, step 201 and 202 can all be carried out at every turn before needing triggering terminal, also can in cell initial, carry out once, after this continue to continue to use this packet mode, be follow-up without execution step 201 and 202, get final product and only need to perform step 101 to 105, specifically adopt which kind of mode, can be arranged according to the demand of practical application.
As from the foregoing, the present embodiment adopts the terminal in community is carried out to the multidimensional grouping, make each terminal all belong at least two groups simultaneously, while then in determining community, having terminal to trigger, select optimum triggering group by adding up the included current quantity of the terminal of triggering that needs of each group, make the terminal that can notify needs as much as possible to trigger with few group that tries one's best, under equal scene, in terms of existing technologies, adopt this scheme can realize with PDCCH still less the purpose of triggering terminal, can reduce the expense of PDCCH.
Embodiment tri-,
According to embodiment mono-and two described methods, below will be described in further detail for example.
For convenience, in the present embodiment, the trigger equipment of take describes as evolution base station as example, should be understood that, except evolution base station, the entity that other and evolution base station have similar functions is suitable for too.
Referring to Fig. 3, idiographic flow can be as follows:
301, evolution base station is divided into groups to the terminal in community, obtains grouping information, makes each terminal can belong to a plurality of groups simultaneously, and wherein, this grouping information comprises group identification and the numbering of terminal in affiliated group of the group under terminal;
For convenience, in the present embodiment, will take each terminal and belong to two groups simultaneously and describe as example, for example, concrete grouping situation can be referring to Fig. 1 b, as follows:
If there are 16 terminals in current area: terminal 1～16, these 16 terminals can be divided into groups, such as these 16 terminals are divided into to 8 groups, make a terminal belong to two groups simultaneously, wherein, group 1 comprises terminal 1～4, group 2 comprises terminal 5～8, group 3 comprises terminal 9～12, group 4 comprises terminal 13～16, group 5 comprises terminal 1, terminal 5, terminal 9 and terminal 13, group 6 comprises terminal 2, terminal 6, terminal 10 and terminal 14, group 7 comprises terminal 3, terminal 7, terminal 11 and terminal 15, group 8 comprises terminal 4, terminal 8, terminal 12 and terminal 16.
Wherein, there is corresponding group identification in each group, and this group identification is used for identifying group, by group identification, can find group correspondingly.
Each group has corresponding with it PDCCH, and evolution base station sends trigger message to terminals all in this group by PDCCH, refers to prior art and does not repeat them here.
Each terminal also has self (being terminal) numbering in affiliated group, and like this, terminal, after receiving trigger message, just can determine oneself whether to need to trigger by the confirmation to numbering.This numbering specifically can be referring to table one;
Table one:
Such as, as shown in Table 1, terminal 1 belongs to group 1 and group 5 simultaneously, wherein, terminal 1 is numbered 1 in group 1, terminal 1 is numbered 1 in group 5, again such as, terminal 2 belongs to group 1 and group 6 simultaneously, wherein, terminal 2 is numbered 2 in group 1, and terminal 2 is numbered 1 in group 6, etc.
302, evolution base station is notified grouping information to each terminal by high-level signaling, so that each terminal can be known the group identification of the group that self is subordinate to (being terminal), and the numbering in affiliated group.
Such as, terminal 14 belongs to group 4 and group 6 simultaneously, and terminal 14 is numbered 2 in group 4, be numbered 4 in group 6, so trigger equipment need to be by the group identification of group 4, and the group identification of group 6 is notified to terminal 14, and it is numbered 2 notification terminal 14 in group 4, and be numbered 4 in group 6, the like.
Terminal, after receiving this grouping information, need to be preserved this grouping information, so as follow-up receive trigger message after, can determine self (being terminal) whether to need to trigger according to this grouping information, about this point, specifically can, referring to prior art, not repeat them here.
After this, if there is terminal to be triggered, evolution base station is selected to need the group triggered, and makes the terminal of notifying needs as much as possible to trigger with few grouping of trying one's best, and concrete enforcement can be referring to step 303～307;
303, evolution base station is determined in community needs the terminal triggered, and the terminal that needs are triggered is put into terminal set to be triggered, and the initial condition of this triggering terminal set is empty;
For example, if now need triggering terminal 2, terminal 6, terminal 11 and terminal 14, evolution base station determines that the current terminal triggered that needs is: terminal 2, terminal 6, terminal 11 and terminal 14, to in terminal set to be triggered, record terminal 2, terminal 6, terminal 11 and terminal 14, the unit that now terminal set to be triggered comprises have: terminal 2, terminal 6, terminal 11 and terminal 14.
304, the included current quantity that needs the terminal of triggering of each group in evolution base station statistics cluster set, obtain statistics, and wherein, this cluster set comprises all groups in community under initial condition;
For example, if this community has 8 groups,, under initial condition, there are 8 elements in this cluster set: group 1, group 2, group 3, group 4, group 5, group 6, group 7 and group 8; In evolution base station statistics cluster set, the included current quantity that needs the terminal of triggering of each group, obtain following statistics, and the line item of going forward side by side, referring to table two;
Table two:
305, evolution base station selects to have the group that needs at most triggering terminal as triggering group in cluster set according to statistics;
For example, as shown in Table 2, the quantity of the current terminal that need to trigger that group 6 is included is maximum: 3, so evolution base station selects group 6 as triggering groups.
306, evolution base station sends trigger message according to the triggering group of selecting;
Such as, if selected group 6 as triggering group in step 305, evolution base station can be selected corresponding PDCCH according to the group identification of group 6, owing to needing the terminal triggered in group 6, it is terminal 2, terminal 6 and terminal 14, and terminal 2 corresponding information bit in PDCCH is the 1st, terminal 6 corresponding information bit in PDCCH is the 2nd, terminal 14 corresponding information bit in PDCCH is the 4th, therefore, now evolution base station sends PDCCH information " 1101 " to all terminals in group 6, it is terminal 2, terminal 6, terminal 10 and terminal 14, mean to be numbered 1, 2 and 4 terminal needs to trigger.
It should be noted that, for convenience, in embodiments of the present invention, all with " 1 ", mean to need to trigger, " 0 " means not need triggering to describe for example, should be understood that, can also mean not need to trigger with " 1 ", and " 0 " means to need to trigger, perhaps, can also mean with other indication, specific implementation similarly, does not repeat them here.
307, all terminals in triggering group, after receiving this trigger message, can determine self whether to need to trigger according to numbering, if need to trigger, send SRS to trigger equipment, otherwise, if do not need to trigger, be failure to actuate;
For example, all terminal in group 6, be that terminal 2, terminal 6, terminal 10 and terminal 14 are after receiving PDCCH information " 1101 ", because terminal 2, terminal 6, terminal 10 and terminal 14 have been preserved numbering separately in step 302, so can determine self whether to need to trigger by numbering, as follows:
Be numbered 1 due to terminal 2 in group 6, the 1st information bit in corresponding PDCCH information, and be " 1 " on the 1st information bit, therefore, terminal 2 is determined self needs triggering;
Be numbered 2 due to terminal 6 in group 6, the 2nd information bit in corresponding PDCCH information, and be " 1 " on the 2nd information bit, therefore, terminal 6 is also determined self needs triggering;
Be numbered 3 due to terminal 10 in group 6, the 3rd information bit in corresponding PDCCH information, and be " 0 " on the 2nd information bit, therefore, terminal 10 is determined self does not need triggering;
Be numbered 4 due to terminal 14 in group 6, the 4th information bit in corresponding PDCCH information, and be " 1 " on the 4th information bit, therefore, terminal 14 is determined self needs triggering;
So terminal 2, terminal 6 and terminal 14 send respectively SRS to evolution base station, terminal 10 can be failure to actuate, and specifically can, referring to prior art, not repeat them here.
308, evolution base station is deleted the triggering group of selecting in step 305 from cluster set, and will trigger terminal included in group and delete from terminal set to be triggered;
For example, if the group of selecting in step 305 is group 6, in step 307, group 6 is deleted from cluster set, be that current cluster set has comprised 7 elements, be specially: group 1, group 2, group 3, group 4, group 5, group 7 and group 8, because terminal 2, terminal 6 and terminal 14 have triggered, so terminal 2, terminal 6 and terminal 14 are deleted from terminal set to be triggered, i.e. surplus next element in current terminal set to be triggered: terminal 11.
309, evolution base station judges whether terminal set to be triggered is empty, and if it is empty, sign needs the terminal triggered all to trigger, and flow process finishes; If not empty, mean to have the terminal not yet triggered, return to execution step 303.
For example, 308 is known in steps, also has an element in current terminal set to be triggered: terminal 11, so, evolution base station determines that terminal set to be triggered is not for empty, so return to execution step 303, determine that the current terminal that need to trigger is terminal 11, then perform step 304, add up the current quantity that needs the terminal of triggering of each group, obtain following statistics, the line item of going forward side by side, referring to table three;
Table three:
As shown in Table 3, group 3 and group 7 have all comprised 1 terminal that needs trigger, so, evolution base station is random or trigger group according to preset policy selection group 3 or group's 7 conducts, for convenience, in this hypothesis, select group 3 as triggering group, evolution base station can be selected corresponding PDCCH according to the group identification of group 3, then in the PDCCH selected, indication needs the terminal triggered, such as, send PDCCH information " 0010 ", be illustrated in group 3, the terminal need triggered be numbered 3, terminal 11.
After this, evolution base station is deleted group 3 from cluster set, be that current cluster set has comprised 6 elements, be specially: group 1, group 2, group 4, group 5, group 7 and group 8, because terminal 11 also triggers, so terminal 11 is deleted from terminal set to be triggered, be for empty in current terminal set to be triggered, so, show that terminal that all needs trigger has triggered complete, process ends.
It should be noted that, step 301 and 302 can all be carried out at every turn before needing triggering terminal, also can in cell initial, carry out once, after this continue to continue to use this packet mode, be follow-up without execution step 301 and 302, get final product and only need to perform step 303 to 309, specifically adopt which kind of mode, can be arranged by operator according to the demand of practical application.
In addition, also it should be noted that, below only take each terminal belongs to two groups simultaneously and describes as example, should be understood that, in the specific implementation, can also be according to practical application need to carry out the multidimensional grouping to terminal, make terminal belong to plural group simultaneously, such as belong to 3 or 4 groups simultaneously, etc., do not repeat them here.And above table conveniently it will be appreciated by those skilled in the art that in actual applications only for specifically describing the embodiment of the present invention, terminal needn't maintenance class like form.
As from the foregoing, the present embodiment adopts the terminal in community is carried out to the multidimensional grouping, make each terminal all belong at least two groups simultaneously, while then in determining community, having terminal to trigger, select optimum triggering group by adding up the included current quantity of the terminal of triggering that needs of each group, make the terminal that can notify needs as much as possible to trigger with few group that tries one's best, under equal scene, in terms of existing technologies, adopt this scheme can realize with PDCCH still less the purpose of triggering terminal, can reduce the expense of PDCCH.
Embodiment tetra-,
In order to implement better above method, a kind of trigger equipment of the present invention, as shown in Fig. 4 a, this trigger equipment comprises determining unit 401, statistic unit 402, selected cell 403 and trigger element 404;
Determining unit 401, for determining the current terminal triggered that needs, wherein, each terminal all belongs at least two groups simultaneously;
Such as, referring to Fig. 1 b, terminal 1 belongs to group 1 and group 5 simultaneously, and terminal 2 belongs to group 2 and group 6 simultaneously, etc.
For example, if current, need the terminal triggered to be: terminal 2, terminal 6, terminal 11 and terminal 14, according to the grouping situation shown in Fig. 1 b, trigger equipment can be known by statistics: group 1～4 and group 7 have the terminal that 1 needs triggers, group 6 has the terminal that 3 needs trigger, and group 5 and group 8 do not need the terminal triggered.
For example, if statistic unit 402 counts group 1～4 and group 7 has the terminal that 1 needs triggers, group 6 has the terminal that 3 needs trigger, and group 5 and group 8 do not need the terminal triggered, now, selected cell 403 selects group 6 as triggering group.
For example, if selected cell 403 has selected group 6 as triggering group, now trigger element 404 sends PDCCH information to terminals all in group 6 by the corresponding PDCCH of group 6, and indicates the terminal that need to trigger in PDCCH information.
After this, terminals all in group 6, after receiving this PDCCH information, can determine self whether to need to trigger according to numbering, if need, trigger, send SRS to trigger equipment, otherwise, if do not need, do not trigger, be failure to actuate, specifically can, referring to prior art, do not repeat them here.
As shown in Figure 4 b, this trigger equipment can also comprise judging unit 405;
Judging unit 405, for judging whether the current terminal triggered that needs all triggers, if the terminal that existence not yet triggers triggers determining unit 401 and carries out the above-mentioned current operation that needs the terminal of triggering of determining, specifically can, referring to front embodiment, not repeat them here.
As shown in Fig. 4 c, wherein, judging unit 405 can comprise deletes subelement 4051 and judgment sub-unit 4052;
Determining unit 401, need specifically for determining in community the terminal triggered, and the terminal that needs are triggered is put into terminal set to be triggered, and wherein, the initial condition of triggering terminal set is empty;
For example, if now need triggering terminal 2, terminal 6, terminal 11 and terminal 14, evolution base station determines that the current terminal triggered that needs is: terminal 2, terminal 6, terminal 11 and terminal 14, to in terminal set to be triggered, record terminal 2, terminal 6, terminal 11 and terminal 14, the unit that now terminal set to be triggered comprises have: terminal 2, terminal 6, terminal 11 and terminal 14.
For example, if this community has 8 groups,, under initial condition, there are 8 elements in this cluster set: group 1, group 2, group 3, group 4, group 5, group 6, group 7 and group 8.
For example, if the group that selected cell 403 is selected is group 6, now, delete subelement 4051 group 6 is deleted from cluster set, and terminal included in group 62, terminal 6 and terminal 14 (referring to Fig. 1 b) are deleted from terminal set to be triggered.
Whether judgment sub-unit 4052, be empty for judging terminal set to be triggered, if not empty, means to exist the not yet terminal of triggering, and triggering determining unit 401 is carried out and determined the current operation that needs the terminal of triggering, referring to enforcement three, does not repeat them here.
As shown in Fig. 4 c, this trigger equipment can also comprise grouped element 406 and notification unit 407;
Grouped element 406, divided into groups for the terminal in community, obtains grouping information, makes each terminal belong at least two groups simultaneously, and wherein, this grouping information comprises group identification and the numbering of terminal in affiliated group of the group under terminal; For example, can be referring to the grouping example in Fig. 1 b.
As shown in Fig. 4 c, wherein, trigger element 404 can comprise chooser unit 4041 and send subelement 4042;
Send subelement 4042, in the PDCCH selected in chooser unit 4041 in the numbering of affiliated group according to terminal, indicating and need the terminal triggered;
Such as, terminal 1 is numbered 1 in group 1, if " 1 " means to trigger, and " 0 " means not trigger, can on the 1st information bit of the 1 corresponding PDCCH of group, show " 1 ", again such as, terminal 2 is numbered 2 in group 1, in like manner, can on the 2nd information bit of the 1 corresponding PDCCH of group, show " 1 ", if the terminal that now needs in group 1 to trigger only has terminal 1 and terminal 2 (take group 1 comprise that 4 terminals are example), complete PDCCH information is " 1100 ", on the 1st information bit and the 2nd information bit, be " 1 ", and other information bits are " 0 ".
The concrete enforcement of above unit can, referring to front embodiment, not repeat them here.
This trigger equipment is specifically as follows evolution base station, or has other entities of similar functions.
As from the foregoing, grouped element 406 in the trigger equipment of the present embodiment can carry out the multidimensional grouping by the terminal in community, make each terminal all belong at least two groups simultaneously, while then in the definite community of determining unit 401, having terminal to trigger, by selected cell 403, the statistics of the quantity of the current terminal that need to trigger included to each group according to statistic unit 402 is selected optimum triggering group, make the terminal that can notify needs as much as possible to trigger with few group that tries one's best, under equal scene, in terms of existing technologies, adopt the trigger equipment of this scheme can realize with PDCCH still less the purpose of triggering terminal, can reduce the expense of PDCCH.
Embodiment five,
Accordingly, the embodiment of the present invention also provides a kind of communication system, as shown in Figure 5, this trigger equipment comprises terminal 50 and trigger equipment 40, wherein, any trigger equipment that trigger equipment 40 can provide for the embodiment of the present invention, the quantity of terminal 50 can be arbitrarily.
Wherein, this grouping information comprises group identification and the numbering of terminal in affiliated group of the group that terminal is affiliated.
The concrete enforcement of above equipment can, referring to front embodiment, not repeat them here.
As from the foregoing, trigger equipment 40 in the communication system that the present embodiment provides adopts the terminal in community is carried out to the multidimensional grouping, make each terminal 50 all belong at least two groups simultaneously, while then in determining community, having terminal 50 to need to trigger, select optimum triggering group by adding up the included current quantity of the terminal 50 of triggering that needs of each group, make the terminal 50 that can notify needs as much as possible to trigger with few group that tries one's best, under equal scene, in terms of existing technologies, adopt this scheme can realize with PDCCH still less the purpose of triggering terminal, can reduce the expense of PDCCH.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to come the hardware that instruction is relevant to complete by program, this program can be stored in a computer-readable recording medium, storage medium can comprise: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD etc.
Above a kind of triggering method and the trigger equipment that the embodiment of the present invention is provided is described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention simultaneously.
Claims (10)
1. a triggering terminal method, is characterized in that, comprising:
Determine the current terminal triggered that needs, wherein, each terminal all belongs at least two groups;
Add up the included current quantity that needs the terminal of triggering of each group;
Selection comprises that group that the quantity of the terminal that current needs trigger is maximum is as triggering group;
Send trigger message according to the triggering group of selecting.
2. method according to claim 1, is characterized in that, the described triggering group according to selecting also comprises after sending trigger message:
Judge whether the current terminal triggered that needs all triggers, if there is the terminal not yet triggered, repeat the described current terminal triggered that needs of determining.
3. method according to claim 1 and 2, is characterized in that, before described definite current terminal that needs to trigger, also comprise:
Terminal in community is divided into groups, obtain grouping information, make each terminal belong at least two groups, described grouping information comprises group identification and the numbering of terminal in affiliated group of the group under terminal;
Grouping information is notified to terminal.
4. method according to claim 3, is characterized in that, the described triggering group according to selecting sends trigger message and comprises:
Select corresponding physical layer descending control channel PDCCH according to the group identification that triggers group;
Numbering according to terminal in affiliated group indicates in the PDCCH selected needs the terminal triggered.
5. method according to claim 1 and 2, is characterized in that, described each terminal all belongs to two groups.
6. a triggering terminal equipment, is characterized in that, comprising:
Determining unit, for determining the current terminal triggered that needs, wherein, each terminal all belongs at least two groups;
Statistic unit, for adding up the included current quantity that needs the terminal of triggering of being determined by determining unit of each group;
Selected cell, the maximum group of the quantity of the terminal of selecting for the statistics according to statistic unit to comprise that current needs trigger is as triggering group;
Trigger element, send trigger message for the triggering group of selecting according to selected cell.
7. triggering terminal equipment according to claim 6, is characterized in that, also comprises:
Whether judging unit, all trigger for judging the current terminal triggered that needs, if the terminal that existence not yet triggers triggers determining unit and carries out the described current operation that needs the terminal of triggering of determining.
8. according to the described triggering terminal equipment of claim 6 or 7, it is characterized in that, also comprise grouped element and notification unit;
Grouped element, divided into groups for the terminal in community, obtains grouping information, makes each terminal belong at least two groups simultaneously, and described grouping information comprises group identification and the numbering of terminal in affiliated group of the group under terminal;
Notification unit, notify to terminal for the grouping information that grouped element is obtained.
9. triggering terminal equipment according to claim 8, is characterized in that, described trigger element comprises the chooser unit and sends subelement;
The chooser unit, select corresponding physical layer descending control channel PDCCH for the group identification of the triggering group according to the selected cell selection;
Send subelement, in the PDCCH selected in the chooser unit in the numbering of affiliated group according to terminal, indicating and need the terminal triggered.
10. according to the described triggering terminal equipment of claim 6 or 7, it is characterized in that, described triggering terminal equipment is evolution base station.
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| CN2010102078233A CN102300164B (en) | 2010-06-22 | 2010-06-22 | Triggering method and triggering equipment |
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| CN102300164B true CN102300164B (en) | 2013-12-04 |
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| CN101606327A (en) * | 2007-02-14 | 2009-12-16 | 高通股份有限公司 | The apparatus and method that are used for the up-link power control of radio communication |
| CN101669393A (en) * | 2006-11-01 | 2010-03-10 | Lg电子株式会社 | Method of transmitting and receiving paging messages in a wireless communication system |
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| US8218526B2 (en) * | 2007-04-30 | 2012-07-10 | Texas Instruments Incorporated | Uplink synchronization maintenance principles in wireless networks |
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| CN101669393A (en) * | 2006-11-01 | 2010-03-10 | Lg电子株式会社 | Method of transmitting and receiving paging messages in a wireless communication system |
| CN101606327A (en) * | 2007-02-14 | 2009-12-16 | 高通股份有限公司 | The apparatus and method that are used for the up-link power control of radio communication |
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