CN104378188A - Downlink control channel processing method, device and system - Google Patents
Downlink control channel processing method, device and system Download PDFInfo
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- CN104378188A CN104378188A CN201310349760.9A CN201310349760A CN104378188A CN 104378188 A CN104378188 A CN 104378188A CN 201310349760 A CN201310349760 A CN 201310349760A CN 104378188 A CN104378188 A CN 104378188A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
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Abstract
The invention provides a downlink control channel processing method. The method comprises the steps that a sending end distributes the G-RNTI of a cluster service group in a special space, and the G-RNTI is used for conducting cluster service scheduling; for UE which is in an RRC_Connected state in the cluster service group, if a cluster service and an UE individual service exist simultaneously, the cluster service and the UE individual service are combined, and then the C-RNTI of the UE is used for scheduling the combined services; a receiving end is used for conducting a special space blind test by a {G-RNTI} or {C-RNTI, G-RNTI} at a downlink TTI; once any RNTI is detected, the blind test is ended. The invention further provides a downlink control channel processing device and system. According to the scheme, the downlink control channel processing method, device and system can support the scheduling of multiple groups of cluster services, and lower the UE searching complexity.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to a kind of down control channel processing method, device and system.
Background technology
In LTE group system, except the RNTI supported in former LTE standard, adds additional the GP-RNTI(group paging radio network temporary identifier supporting group service) and G-RNTI(group radio network temporary identifier), wherein, GP-RNTI is used for the paging of group user, and G-RNTI is used for the physical layer scrambling etc. of group's signaling and business.
The space that the control command of RNTI scrambling is shared on control channel resource CCE is divided into public space and private space, and public space is shared by multiple common command, and private space can multiple user be shared, and also can a user specially enjoy.Public space from fixing CCE spatial index 0, and terminal to the search of private space from the determined original position of C-RNTI.
The paging command etc. of above-mentioned GP-RNTI scrambling is generally placed on public space, and the descending group service order of G-RNTI scrambling both can be placed on public space, also can be placed on private space.And the order of G-RNTI scrambling is placed on public space, because public resource is more nervous, G-RNTI will certainly seize limited public space, will reduce the throughput of system like this; If G-RNTI is placed on the relatively sufficient private space of resource, then by strengthening the complexity of UE search volume, also therefore higher requirement be it is also proposed to UE battery capacity.
For the problems referred to above, a kind of existing method is: newly open up a G-RNTI extending space, when public space is taken by other RNTI, is placed on by G-RNTI in this G-RNTI extending space.There are the following problems for the method: a fixing reserved G-RNTI extending space is unfavorable for the dynamic conditioning of many group group services: when the cluster group in community increases, the G-RNTI number of a TTI dispatching can be caused to increase, then the demand of G-RNTI extending space is then increased, when the cluster group in community reduces, the G-RNTI number of a TTI dispatching can be caused to reduce, then the demand of G-RNTI extending space is then reduced; Reserved G-RNTI extending space is excessive, and the blind check number of times of UE to G-RNTI can be caused to increase further, and reserved G-RNTI extending space is too small, can affect the scheduling to cluster group.If want dynamic conditioning G-RNTI extending space, need again additionally to increase information of eating dishes without rice or wine.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of method that down control channel distributes, and the method comprises: transmitting terminal: for the G-RNTI of group service group distributes at private space, and adopts described G-RNTI to carry out group service scheduling; To the UE being in RRC_Connected state in group service group, if having group service and UE individual service simultaneously, then first described group service and UE individual service merged, the business after the C-RNTI re-using described UE is combined is dispatched.Service combining can be carried out in MAC layer herein.
Further, to the UE being in RRC_Idle state in cluster group, and be in RRC_Connected state and only have the UE of group service, G-RNTI can be used to carry out traffic scheduling.
Preferably, described scheduling can be dynamic dispatching or semi-persistent scheduling.Further, when UE each in group service group all supports semi-persistent scheduling, then can carry out semi-persistent scheduling, otherwise carry out dynamic dispatching.
Above-mentioned group service group can be one or more.
Preferably, the CCE degree of polymerization that G-RNTI adopts is { the set of 8,4}.
The present invention also proposes a kind of down control channel processing unit, comprising: allocation of space module, and for distributing at private space for the G-RNTI of group service group, the first scheduler module, carries out group service scheduling for adopting described G-RNTI; Second scheduler module, for dispatching the UE being in RRC_Connected state in group service group, be specially: if having group service and UE individual service simultaneously, then first described group service and UE individual service merged, the business after the C-RNTI re-using described UE is combined is dispatched.Described first scheduler module is further used for the UE to being in RRC_Idle state in cluster group, uses G-RNTI to carry out traffic scheduling; To the UE being in RRC_Connected state, if only have group service, then G-RNTI is used to carry out traffic scheduling.
Further, what described first scheduler module and the second scheduler module were carried out is scheduling to dynamic dispatching.If each UE all supports semi-persistent scheduling in described group service group, then described first scheduler module and the second scheduler module carry out semi-persistent scheduling, otherwise carry out dynamic dispatching.
The present invention also proposes a kind of down control channel processing method, and the method comprises: receiving terminal at descending TTI, adopt G-RNTI} or C-RNTI, G-RNTI} set carry out private space blind check; Once any one RNTI be detected, terminate described blind check.Further, if receiving terminal is in RRC_Idle state, then { private space blind check is carried out in G-RNTI} set in employing.If receiving terminal is in RRC_Connected state, then { private space blind check is carried out in C-RNTI, G-RNTI} set in employing; Further, { order that C-RNTI, G-RNTI} gather when carrying out private space blind check is G-RNTI after first C-RNTI in employing.
The present invention also proposes a kind of terminal, at descending TTI, adopt G-RNTI} or C-RNTI, G-RNTI} set carry out private space blind check; Once any one RNTI be detected, terminate described blind check.If be in RRC_Idle state, then { private space blind check is carried out in G-RNTI} set in employing.If be in RRC_Connected state, then { private space blind check is carried out in C-RNTI, G-RNTI} set in employing; Further, { order that C-RNTI, G-RNTI} gather when carrying out private space blind check is G-RNTI after first C-RNTI in employing.
The present invention also proposes a kind of down control channel treatment system, and this system comprises down control channel processing unit and terminal, wherein, described down control channel processing unit and terminal described above.
The down control channel processing method that the present invention proposes, device and system can not only support the concurrent scheduling of many group group services, enhance group service system gain, have also taken into account the blind check number of times of UE to G-RNTI simultaneously, reduced UE search complexity.
Accompanying drawing explanation
Fig. 1 is the process chart of the method that proposes of the present invention at transmitting terminal;
Fig. 2 is the process chart of the method that proposes of the present invention at receiving terminal;
Fig. 3 is the structural representation of the device that the present invention proposes;
Fig. 4 is the structural representation of the system that the present invention proposes.
Embodiment
For the purpose of quoting and know, the explanation of the technology ranking hereinafter used, to write a Chinese character in simplified form and abbreviation is summarized as follows:
LTE:Long Term Evolution system, long evolving system;
RNTI:Radio Network Temporary Identifier, Radio Network Temporary Identifier;
GP-RNTI:Group Paging RNTI, group paging Radio Network Temporary Identifier;
G-RNTI:Group RNTI, group's Radio Network Temporary Identifier;
CCE:Control Channel Elements, control channel resource;
C-RNTI: Cell Radio Network Temporary Identifier/Identity, Cell-RNTI;
UE:User Equipment, subscriber equipment;
TTI:Transmit Time Interval, transmission time interval;
PDCCH:Physical Downlink Control Channel, Physical Downlink Control Channel;
DCI:Downlink Control Information, Downlink Control Information.
The concrete structure of the idiographic flow of down control channel processing method that the present invention proposes, device and system will be specifically described by following examples.
Refer to accompanying drawing 1, a kind of down channel processing method proposed for the present invention is at the process chart of transmitting terminal.Its concrete operations are as follows:
Transmitting terminal is that group service group G-RNTI distributes in UE dedicated search space, by G-RNTI, group service is dispatched, herein can for dynamic dispatching or static scheduling be (when all UE in this group service group all support semi-persistent scheduling function, this scheduling can adopt semi-persistent scheduling or dynamic dispatching, otherwise can only adopt dynamic dispatching).Dynamic dispatching is adopted to the UE being in RRC_Connected state in the group service group corresponding to G-RNTI, be specially: the community of base station adopts semi-persistent scheduling or dynamic dispatching to the group service of a G-RNTI, when there being the group service of a G-RNTI in a descending TTI, by this G-RNTI, this business is dispatched; Further, (this UE is made to be UEi if also have UE to have in the group service group of the G-RNTI in this TTI, its C-RNTI is C-RNTIi) individual service, then when this TTI dispatches this UE, first the C-RNTI business of G-RNTI group service and this UE is merged, business C-RNTIi after adopting C-RNTIi to be combined again dispatches, and C-RNTIi distributes at private space.Wherein, the merging of the C-RNTI business of G-RNTI group service and this UE can be carried out in MAC layer.To being in the UE of RRC_Idle state and being in RRC_Connected state but only having the UE of group service that G-RNTI can be used to carry out group service scheduling.
Refer to accompanying drawing 2, for the handling process of the receiving terminal of a kind of down channel processing method of the present invention's proposition, its concrete operations comprise: be the group service of semi-persistent scheduling for G-RNTI, UE adopts { G-RNTI} or { blind check of PDCCH private space is carried out in C-RNTI, G-RNTI} set at the descending TTI in the semi-static cycle of G-RNTI.Be the group service of dynamic dispatching for G-RNTI, UE in each of the lower row TTI adopts { G-RNTI} or { blind check of PDCCH private space is carried out in C-RNTI, G-RNTI} set.Wherein, for the UE under RRC_Idle state, { G-RNTI} gathers, and also can adopt { C-RNTI, G-RNTI} set in employing; For the UE under RRC_Connected state, adopt { C-RNTI, G-RNTI} set.When { during C-RNTI, G-RNTI} set, UE adopts the order of RNTI to be G-RNTI after first C-RNTI, is specially: first carry out blind check with the C-RNTI of this UE at private space, if DCI detected, then exit the blind check of private space; If DCI do not detected, then carry out blind check with G-RNTI at private space again.
In said process, the CCE degree of polymerization adopted G-RNTI can be { the set of 8,4}.Adopt said method, system can well be supported to organize group service more, and the blind check number of times of UE to down control channel is only 4 times, and immobilizes.
Certain applications below in conjunction with embodiment one and embodiment two pairs of said methods are specifically described:
Example one:
The community of certain base station is made to there are 3 UE, be respectively UE0 ~ UE2, there is a G-RNTI is 15, corresponding UE is respectively UE0 ~ UE2, wherein, UE0 is in RRC_Connected state, and all the other UE are in RRC_Idle state, make the C-RNTI of UE0 be 5, have the C-RNTI business of G-RNTI group service and UE0 at certain descending TTI simultaneously.UE0 ~ UE2 all supports semi-persistent scheduling.
Transmitting terminal, base station side:
Step 1: the community of base station first adopts semi-persistent scheduling G-RNTI group service under this descending TTI, and wherein, G-RNTI distributes at private space;
Step 2: this community is dispatched the UE of C-RNTI business that has be under RRC_Connected state under this descending TTI again, UE0 is only had to have C-RNTI business to wait to dispatch under this descending TTI, therefore, to the C-RNTI business of this G-RNTI group service and UE0 with together with adopt C-RNTI to dispatch, wherein, C-RNTI distributes at private space.
Receiving terminal,
UE0 side:
In this descending TTI employing, { blind check of the private space of PDCCH is carried out in C-RNTI, G-RNTI} set to step 1:UE0, first carries out the blind check of the private space of PDCCH with C-RNTI, detects that C-RNTI exists, then terminate remaining blind check in this set.
UE1 side:
In this descending TTI employing, { blind check of the private space of PDCCH is carried out in G-RNTI} set to step 1:UE1, first carries out the blind check of the private space of PDCCH with G-RNTI, detects that G-RNTI exists, terminate remaining blind check in this set.
UE2 side:
In this descending TTI employing, { blind check of the private space of PDCCH is carried out in G-RNTI} set to step 1:UE2, first carries out the blind check of the private space of PDCCH with G-RNTI, detects that G-RNTI exists, terminate remaining blind check in this set.。
Example two:
Make the community of certain base station there are two UE, be respectively UE0 ~ UE1, a G-RNTI is 21, corresponding UE is respectively UE0 ~ UE1, and wherein, UE0 is in RRC_Idle state, UE1 is in RRC_Connected state, makes the C-RNTI of UE1 be 17, only has G-RNTI group service at certain descending TTI.
Transmitting terminal, base station side:
Step 1: the community of base station first adopts dynamic dispatching G-RNTI group service under this descending TTI, and wherein, G-RNTI distributes at private space;
Step 2: this community is dispatched the UE of C-RNTI business that has be under RRC_Connected state under this descending TTI again, does not have UE to have C-RNTI business to wait to dispatch under this descending TTI, therefore, terminate scheduling.
Receiving terminal,
UE0 side:
In this descending TTI employing, { blind check of the private space of PDCCH is carried out in G-RNTI} set to step 1:UE0, first carries out the blind check of the private space of PDCCH with G-RNTI, detects that G-RNTI exists, terminate remaining blind check in this set.
UE1 side:
In this descending TTI employing, { blind check of the private space of PDCCH is carried out in C-RNTI, G-RNTI} set to step 1:UE1, first carries out the blind check of the private space of PDCCH with C-RNTI, does not detect that C-RNTI exists, continue next RNTI blind check;
Step 2:UE1 continues to adopt G-RNTI to carry out the blind check of the private space of PDCCH, detects that G-RNTI exists, then terminates remaining blind check in this set.
Embodiment three:
Refer to accompanying drawing 3, down control channel processing unit structural representation disclosed in the embodiment of the present invention three.This device comprises: allocation of space module, for distributing at private space for the G-RNTI of group service group.First scheduler module, for adopting described G-RNTI to carry out group service scheduling, further, uses G-RNTI to carry out traffic scheduling to the UE being in RRC_Idle state in cluster group; To the UE being in RRC_Connected state, if only have group service, then G-RNTI is used to carry out traffic scheduling.Second scheduler module, for dispatching the UE being in RRC_Connected state in group service group, be specially: if having group service and UE individual service simultaneously, then first described group service and UE individual service merged, the business after the C-RNTI re-using described UE is combined is dispatched.Wherein, if each UE all supports semi-persistent scheduling in group service group, then described first scheduler module and the second scheduler module can adopt semi-persistent scheduling, also can adopt dynamic dispatching, otherwise adopt dynamic dispatching.
Embodiment four:
A kind of terminal.Based on down control channel processing unit disclosed in embodiment three, end side, at descending TTI, adopts { G-RNTI} or { private space blind check is carried out in C-RNTI, G-RNTI} set; Once any one RNTI be detected, terminate described blind check.Further, if terminal is in RRC_Idle state, can adopt G-RNTI} set carry out private space blind check; If be in RRC_Connected state, then can adopt C-RNTI, G-RNTI} set carry out private space blind check.Further, { C-RNTI, G-RNTI} set carries out the order of private space blind check for being G-RNTI after first C-RNTI in employing.
Embodiment five:
Refer to accompanying drawing 4, a kind of structural representation of down control channel treatment system disclosed in the embodiment of the present invention five.This system is made up of the down control channel processing unit such as described by embodiment three and the terminal described by embodiment four.
Can be found out by above embodiment, the present invention proposes in down channel control channel processing method, device and system, at dedicated search allocation of space group service G-RNTI, the concurrent scheduling of system to many group group services can be met, enhance group service system gain; To the UE simultaneously with group service and UE individual service, relative business merges, and dispatches, so just take into account the blind check number of times of UE to G-RNTI, thus reduce UE search complexity at use C-RNTI; Especially { when 8,4}, the blind check number of times of the increase of UE is very limited to adopt the CCE degree of polymerization for group service G-RNTI.
Above-described embodiment is only the present invention's part embodiment, instead of whole embodiments.Within the spirit and principles in the present invention all, those of ordinary skill in the art, not making any amendment done under creative work prerequisite, equivalent replacement or improvement etc., all should belong within the scope of protection of the invention.
Claims (22)
1. a down control channel processing method, is characterized in that, comprising:
Transmitting terminal:
For the G-RNTI of group service group distributes at private space, and described G-RNTI is adopted to carry out group service scheduling;
To the UE being in RRC_Connected state in group service group, if having group service and UE individual service simultaneously, then first described group service and UE individual service merged, the business after the C-RNTI re-using described UE is combined is dispatched.
2. method according to claim 1, is characterized in that, described in carry out group service scheduling comprise: to the UE being in RRC_Idle state in cluster group, use G-RNTI carry out traffic scheduling.
3. one of method according to claim 1 and 2, is characterized in that, described in carry out group service scheduling also comprise: to the UE being in RRC_Connected state, if only have group service, then use G-RNTI carry out traffic scheduling.
4. method according to claim 1, is characterized in that, described service combining is carried out in MAC layer.
5. method according to claim 1, is characterized in that, described in be scheduling to dynamic dispatching.
6. method according to claim 1, it is characterized in that, described scheduling is defined as dynamic dispatching or semi-persistent scheduling according to UE function each in described group service group: if described each UE all supports semi-persistent scheduling, then carry out semi-persistent scheduling, otherwise carry out dynamic dispatching.
7. method according to claim 1, is characterized in that, described group service group is one or more.
8. one of method according to claims 1 to 7, is characterized in that, the CCE degree of polymerization adopted described G-RNTI is the { set of 8,4}.
9. a down control channel processing unit, is characterized in that, comprising:
Allocation of space module, for distributing at private space for the G-RNTI of group service group,
First scheduler module, carries out group service scheduling for adopting described G-RNTI;
Second scheduler module, for dispatching the UE being in RRC_Connected state in group service group, be specially: if having group service and UE individual service simultaneously, then first described group service and UE individual service merged, the business after the C-RNTI re-using described UE is combined is dispatched.
10. device according to claim 9, is characterized in that, described first scheduler module is further used for the UE to being in RRC_Idle state in cluster group, uses G-RNTI to carry out traffic scheduling.
One of 11. devices according to claim 9 or 10, is characterized in that, described first scheduler module, also for the UE being in RRC_Connected state, if only have group service, then uses G-RNTI to carry out traffic scheduling.
12. devices according to claim 9, is characterized in that, what described first scheduler module and the second scheduler module were carried out is scheduling to dynamic dispatching.
13. devices according to claim 9, is characterized in that, if each UE all supports semi-persistent scheduling in described group service group, then described first scheduler module and the second scheduler module carry out semi-persistent scheduling, otherwise carry out dynamic dispatching.
14. 1 kinds of down control channel processing methods, is characterized in that, comprising:
Receiving terminal: at descending TTI, adopt G-RNTI} or C-RNTI, G-RNTI} set carry out private space blind check; Once any one RNTI be detected, terminate described blind check.
15. methods according to claim 14, is characterized in that, if described receiving terminal is in RRC_Idle state, then { private space blind check is carried out in G-RNTI} set in employing.
16. methods according to claims 14 or 15, is characterized in that, if described receiving terminal is in RRC_Connected state, then adopt that { private space blind check is carried out in C-RNTI, G-RNTI} set.
17. methods according to claim 16, is characterized in that, { order that C-RNTI, G-RNTI} gather when carrying out private space blind check is G-RNTI after first C-RNTI in described employing.
18. 1 kinds of terminals, is characterized in that, comprising: at descending TTI, adopt G-RNTI} or C-RNTI, G-RNTI} set carry out private space blind check; Once any one RNTI be detected, terminate described blind check.
19. terminals according to claim 18, is characterized in that, if described terminal is in RRC_Idle state, then { private space blind check is carried out in G-RNTI} set in employing.
One of 20. terminals according to claim 18 or 19, is characterized in that, if described terminal is in RRC_Connected state, then adopt that { private space blind check is carried out in C-RNTI, G-RNTI} set.
21. terminals according to claim 20, is characterized in that, { order that C-RNTI, G-RNTI} gather when carrying out private space blind check is G-RNTI after first C-RNTI in described employing.
22. 1 kinds of down control channel treatment systems, it is characterized in that, this system comprises down control channel processing unit and terminal, wherein, the down control channel processing unit of described down control channel processing unit described by claim 9 ~ 13 any one, the terminal of described terminal described by claim 18 ~ 21 any one.
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