CN102111880A - Method, system and equipment for allocating downlink control channel resources - Google Patents
Method, system and equipment for allocating downlink control channel resources Download PDFInfo
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- CN102111880A CN102111880A CN2009102432210A CN200910243221A CN102111880A CN 102111880 A CN102111880 A CN 102111880A CN 2009102432210 A CN2009102432210 A CN 2009102432210A CN 200910243221 A CN200910243221 A CN 200910243221A CN 102111880 A CN102111880 A CN 102111880A
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Abstract
An embodiment of the invention relates to a wireless communication technology, in particular to a method, a system and equipment for allocating downlink control channel resources for allocating relay-physical downlink control channel (R-PDCCH) resources to relay-node (RN) equipment in a long term evolution advanced (LTE-A) system, so that relay node equipment is capable of receiving and detecting relay-downlink control information (R-DCI) from a base station according to the allocated R-PDCCH resources. The method disclosed by the embodiment of the invention comprises the following steps that: the base station allocates a physical resource block (PRB) set to each self-service RN equipment, wherein the PRB in the PRB set is the PRB within the R-PDCCH region for bearing the R-DCI; the base station transmits the resources information of the allocated PRB set to the RN equipment corresponding to the PRB set. By the method disclosed by the embodiment of the invention, R-PDCCH resources can be allocated to the relay node equipment in the LTE-A system, so that the base station is capable of transmitting the R-DCI by the R-PDCCH resources, the relay node equipment is capable of receiving and detecting the R-DCI according to the allocated R-PDCCH resources, and the resources utilization ratio and reliability of network transmission are improved.
Description
Technical field
The present invention relates to wireless communication technology, method, system and equipment that particularly a kind of down control channel resources distributes.
Background technology
LTE-A (Long Term Evolution-Advanced, long-term evolution upgrading) system has defined with lower node, interface and link after introducing Relay (relaying) node, shown in Figure 1A,
Node comprises:
Donor-eNB: with RN (relaying) equipment the eNB (evolution base station) of wireless connections is arranged, be abbreviated as DeNB;
Relay-Node: be present in the entity between DeNB and the UE, be abbreviated as RN equipment;
Relay-UE: the UE with RN equipment carries out data interaction is abbreviated as R-UE;
Grand UE: directly and the DeNB UE that carries out data interaction.
Interface comprises:
Un interface: the interface between RN equipment and the DeNB;
Interface between Uu interface: UE and the RN equipment.
Radio Link comprises:
Backhaul link: back haul link, with Un interface link corresponding;
Access link: access link, with Uu interface link corresponding;
Direct link: the direct projection link, DeNB and grand UE carry out the link of transfer of data.
Downlink transfer behind the introducing RN equipment: the data that arrive UE under the RN equipment need send to RN equipment through descending back haul link by DeNB, send to UE by RN equipment through descending access link again.
Uplink behind the introducing RN equipment: the uplink of UE sends to RN equipment by UE through up access link earlier under the RN equipment, sends to DeNB by RN equipment through back haul link again.
At present, in the LTE system, user terminal is by the DCI (Downlink ControlInformation, Downlink Control Information) of PDCCH (Physical Downlink ControlChannel, Physical Downlink Control Channel) reception from the base station.In the LTE-A system, need RN to pass through the R-DCI (relaying Downlink Control Information) of R-PDCCH (relaying Physical Downlink Control Channel) reception from the base station.Because RN adopts MBSFN (Multimedia Broadcast Single Frequence Network, the multimedia broadcasting Single Frequency Network) subframe is used for the transmission of back haul link, RN can't receive the PDCCH of base station at the previous of MBSFN subframe or two symbols, and therefore need mark off a zone in the PDSCH zone is used for R-PDCCH.Can adopt FDM (Frequency Division Multiplex, frequency division multiple access) or FDM+TDM (Time Division Multiplex, time division multiple access) mode to divide the R-PDCCH zone in the LTE-A system, shown in Figure 1B and 1C.No matter adopt which kind of mode to divide, all need make RN equipment can receive and detect R-DCI by the resource of distributing for RN distributes the R-PDCCH resource in the R-PDCCH zone.
In sum, in the LTE-A system, be not the mode of RN devices allocation R-PDCCH resource also at present, make that RN equipment is difficult to receive and detect R-DCI by the R-PDCCH resource.
Summary of the invention
Method, system and equipment that the embodiment of the invention provides a kind of down control channel resources to distribute, in order to be RN devices allocation R-PDCCH resource in the LTE-A system, the R-PDCCH resource that makes via node equipment can pass through to distribute receives and detects the R-DCI from the base station.
The method that a kind of down control channel resources that the embodiment of the invention provides distributes, this method comprises:
Gather for each via node RN devices allocation Physical Resource Block PRB of self service the base station, PRB in the wherein said PRB set is the PRB in the relaying Physical Downlink Control Channel R-PDCCH zone, and the PRB in the described PRB set is used to carry relaying Downlink Control Information R-DCI;
The resource information that the PRB that distributes is gathered in described base station sends to the corresponding RN equipment of this PRB set.
The method that a kind of down control channel resources that the embodiment of the invention provides distributes, this method comprises:
Via node RN equipment receives the resource information that the base station sends, wherein said resource information is that the base station generates according to the Physical Resource Block PRB set for the RN devices allocation, PRB in the described PRB set is the PRB in the relaying Physical Downlink Control Channel R-PDCCH zone, and the PRB in the described PRB set is used to carry relaying Downlink Control Information R-DCI;
Described RN equipment is determined corresponding PRB set according to the resource information that receives, and detects relaying Downlink Control Information R-DCI in the PRB set of determining.
The system that a kind of down control channel resources that the embodiment of the invention provides distributes, this system comprises:
The base station, be used to each via node RN devices allocation Physical Resource Block PRB set of self serving, the resource information that the PRB that distributes is gathered sends to the corresponding RN equipment of this PRB set, wherein said PRB set is used to carry relaying Downlink Control Information R-DCI, PRB in the described PRB set is the PRB in the relaying Physical Downlink Control Channel R-PDCCH zone, and the PRB in the described PRB set is used to carry relaying Downlink Control Information R-DCI;
RN equipment is used for determining corresponding PRB set according to the resource information that receives, and detects relaying Downlink Control Information R-DCI in the PRB set of determining.
A kind of base station that the embodiment of the invention provides, this base station comprises:
Distribution module, be used to each via node RN devices allocation Physical Resource Block PRB set of service, wherein said PRB set is used to carry relaying Downlink Control Information R-DCI, PRB in the described PRB set is the PRB in the relaying Physical Downlink Control Channel R-PDCCH zone, and the PRB in the described PRB set is used to carry relaying Downlink Control Information R-DCI;
Notification module, the resource information that the PRB that is used for distributing gathers send to the corresponding RN equipment of this PRB set.
A kind of via node RN equipment that the embodiment of the invention provides, this RN equipment comprises:
Receiver module, be used to receive the resource information that the base station sends, wherein said resource information is that the base station generates according to the Physical Resource Block PRB set for the RN devices allocation, PRB in the described PRB set is the PRB in the relaying Physical Downlink Control Channel R-PDCCH zone, and the PRB in the described PRB set is used to carry relaying Downlink Control Information R-DCI;
Processing module is used for determining corresponding PRB set according to the resource information that receives, and detects relaying Downlink Control Information R-DCI in the PRB set of determining.
Embodiment of the invention base station each RN devices allocation PRB (physical resourceblock for self serving, Physical Resource Block) set, and the resource information that the PRB that distributes is gathered sends to the RN equipment that this PRB gathers correspondence, wherein the PRB in the PRB set is the PRB in the R-PDCCH zone, be used to carry R-DCI, the RN equipment resource information is determined corresponding PRB set, and detects R-DCI in the PRB set of determining.
Owing in the LTE-A system, can be via node devices allocation R-PDCCH resource, make the base station to send R-DCI by the R-PDCCH resource, via node equipment can receive by the R-PDCCH resource of distributing and detect R-DCI, has improved the resource utilization and the reliability of Network Transmission.
Description of drawings
Figure 1A is the structural representation of LTE-A system in the background technology;
Figure 1B is the R-PDCCH schematic diagram that adopts the FDM mode in the background technology;
Fig. 1 C is the R-PDCCH schematic diagram that adopts the TDM+FDM mode in the background technology;
The system configuration schematic diagram that Fig. 2 distributes for embodiment of the invention down control channel resources;
Fig. 3 is the structural representation of embodiment of the invention base station;
Fig. 4 is the structural representation of embodiment of the invention RN equipment;
Fig. 5 A is that the embodiment of the invention is the schematic diagram that the R-PDCCH of a RN correspondence distributes continuous PRB;
Fig. 5 B is that the embodiment of the invention is the schematic diagram of PRB of the R-PDCCH allocation of discrete of a RN correspondence;
Fig. 6 A is that the embodiment of the invention is the schematic diagram that the R-PDCCH of two RN correspondences distributes continuous different PRB;
Fig. 6 B is that the embodiment of the invention is the schematic diagram of different PRB of the R-PDCCH allocation of discrete of two RN correspondences;
Fig. 6 C is that the embodiment of the invention is the schematic diagram that the R-PDCCH of two RN correspondences distributes continuous identical PRB;
Fig. 6 D is that the embodiment of the invention is the schematic diagram of identical PRB of the R-PDCCH allocation of discrete of two RN correspondences;
Fig. 6 E is that the embodiment of the invention is the schematic diagram that the R-PDCCH of 3 RN correspondences distributes continuous PRB;
Fig. 6 F is the schematic diagram of PRB of the R-PDCCH allocation of discrete of 3 RN correspondences for embodiment of the invention kind;
Fig. 6 G is the schematic diagram that the R-PDCCH of 3 RN correspondences distributes continuous and discrete PRB for embodiment of the invention kind;
Fig. 7 is the method flow schematic diagram that first kind of down control channel resources of the embodiment of the invention distributes;
Fig. 8 is the method flow schematic diagram that second kind of down control channel resources of the embodiment of the invention distributes;
Fig. 9 is the method flow schematic diagram of embodiment of the invention transmission R-DCI.
Embodiment
Gather for each RN devices allocation PRB of self service embodiment of the invention base station, and the resource information that the PRB that distributes is gathered sends to the RN equipment that this PRB gathers correspondence, wherein the PRB in the PRB set is the PRB in the R-PDCCH zone, be used to carry R-DCI, the RN equipment resource information is determined corresponding PRB set, and detects R-DCI in the PRB set of determining.Owing in the LTE-A system, can be via node devices allocation R-PDCCH resource, make the base station to send R-DCI by the R-PDCCH resource, via node equipment can receive by the R-PDCCH resource of distributing and detect R-DCI, has improved the resource utilization and the reliability of Network Transmission.
Wherein, the scheme that embodiment of the invention down control channel resources distributes can be applied to the LTE-A system, also can be applied to the system that other contain RN equipment.
Below in conjunction with Figure of description the embodiment of the invention is described in further detail.
As shown in Figure 2, the system of embodiment of the invention down control channel resources distribution comprises: base station 10 and RN equipment 20.
In specific implementation process, the semi-static method of salary distribution can be adopted in base station 10, is RN devices allocation PRB set such as base station 10 setting when trigger condition satisfies.
Determine when further, can a kind of condition in following condition satisfy base station 10 to satisfy and set trigger condition:
The duration that the instruction that quantity changes, base station 10 acknowledges receipt of artificial triggering of the RN equipment of self serving is confirmed as in base station 10, sub-distribution PRB set on the distance is confirmed in base station 10 when period allocated PRB gathers equals one-period.
Need to prove that the trigger condition of the embodiment of the invention is not limited to above-mentioned condition, other can trigger the condition of distributing the PRB set and be suitable for the embodiment of the invention equally.
It is a variety of that base station 10 notifies the mode of RN equipment also to have resource information, sends to RN equipment such as resource information being placed in the high-level signaling (such as RRC (Radio Resource Control, Radio Resource control) signaling).
Need to prove that the embodiment of the invention is not limited to the mode by high-level signaling notice resource information, other can notify resource information the mode of RN equipment to be suitable for the embodiment of the invention equally.
PRB set corresponding resource information can be the numbering of all PRB in this set, also can be the information of all PRB positions in the unique identification set.Need to prove that embodiment of the invention resource information is not limited to above-mentioned two kinds, as long as can allow RN equipment determine that accurately the information of PRB can be as the resource information of the embodiment of the invention.
Suppose that resource information is the numbering of PRB, base station 10 is the PRB set that RN equipment 1 distributes numbering 1 and 2 correspondences, is the PRB set that RN equipment 2 distributes 4 and 5 correspondences, and then base station 10 will be numbered 1 and 2 and be sent to RN equipment 1 by high-level signaling; Base station 10 will be numbered 4 and 5 and be sent to RN equipment 2 by high-level signaling.
If the PRB set that distributes for RN equipment 20 comprises that a plurality of PRB, then a plurality of PRB can be continuous a plurality of PRB, referring to Fig. 5 A; Also can be a plurality of PRB of discrete (being partial continuous or discontinuous entirely), referring to Fig. 5 B.
If it is a plurality of that the RN equipment of base station 10 services has, then base station 10 can comprise the PRB set of complete different PRB for different RN devices allocation.
The RN equipment of supposing base station 10 service has two, and base station 10 comprises the PRB set of complete different PRB for different RN devices allocation, and then the PRB set that comprises continuous P RB can be distributed for RN equipment 1 and RN equipment 2 in base station 10, referring to Fig. 6 A; The PRB set that comprises discrete PRB can also be distributed for RN equipment 1 and RN equipment 2 in base station 10, referring to Fig. 6 B.
Certainly, the PRB set that comprises discrete PRB also can be distributed for RN equipment 1 distributes the PRB set that comprises continuous P RB in base station 10 for RN equipment 2.That is to say, when needs are gathered for a plurality of RN devices allocation PRB, can comprise the PRB set of continuous P RB, comprise the PRB set of discrete PRB for residue RN devices allocation for part RN devices allocation.
If it is a plurality of that the RN equipment of base station 10 services has, then base station 10 can comprise the PRB set of identical PRB for different RN devices allocation.
The RN equipment of supposing base station 10 service has two, and base station 10 comprises the PRB set of identical PRB for different RN devices allocation, and then the PRB set that comprises continuous P RB can be distributed for RN equipment 1 and RN equipment 2 in base station 10, referring to Fig. 6 C; The PRB set that comprises discrete PRB can also be distributed for RN equipment 1 and RN equipment 2 in base station 10, referring to Fig. 6 D.
If it is a plurality of that the RN equipment of base station 10 services has, then base station 10 can comprise the PRB set of identical PRB for part RN devices allocation, comprises the PRB set of different PRB for all the other RN devices allocation.
The RN equipment of supposing base station 10 services has 3, the PRB set that comprises identical PRB is distributed in base station 10 for RN equipment 1 and RN equipment 2, distribute the PRB set that comprises different PRB for RN equipment 3, then the PRB set that comprises continuous P RB can be distributed for RN equipment 1, RN equipment 2 and RN equipment 3 in base station 10, referring to Fig. 6 E; The PRB set that comprises discrete PRB can also be distributed for RN equipment 1, RN equipment 2 and RN equipment 3 in base station 10, referring to Fig. 6 F; Base station 10 can also comprise continuously the PRB set of (or discrete) PRB for RN equipment 1 and RN equipment 2 distributes, for RN equipment 3 distributes the PRB set that comprises discrete (or continuously) PRB, referring to Fig. 6 G.
20 needs of RN equipment know oneself need go up the detection Downlink Control Information at which PRB (s), does not need to know the Downlink Control Information that also has which RN equipment on these PRB (s), does not also need to know the situation on other PRB (s).Behind RN equipment 20 access base stations 10, according to receive from the resource information of base station just can determine the PRB set of self correspondence, just detection in definite PRB set then.If PRB set distributes in the time of need reconfiguring, RN equipment 20 can be received the resource information from base station 10 again, and redefines corresponding PRB set and detect.
Wherein, base station 10 is after the PRB set that has been the RN devices allocation, by the PRB set for the RN devices allocation of self service, to RN equipment 20 transmission R-DCI; Accordingly, detect R-DCI in the PRB set of RN equipment 20 correspondences.
The mode of base station 10 and RN equipment 20 transmission R-DCI can and Rel 8 versions between base station and the user terminal mode of transmission DCI similar.Certainly, also can not adopt in Rel 8 versions mode of transmission DCI between the base station and user terminal, other can make base station 10 all is to use the embodiment of the invention with R-DCI by the mode that PRB sends to RN equipment 20.
Describe with an instantiation below.
The PRB set for the RN devices allocation of self service is passed through in base station 10.Concrete, base station 10 can interweave a plurality of R-DCI with the back by PRB set transmission when needs pass through a plurality of R-DCI of PRB set transmission; Certainly, can all R-DCI that need send not interweaved yet, directly be mapped in the PRB set of distribution and send.
Interweave if desired, then RN equipment need know which kind of interleaving mode the base station adopts, thereby carries out deinterleaving.Concrete interleaving mode can be set in agreement, also can inform RN equipment by the base station.
There are a lot of situations to send a plurality of R-DCI, only distribute to a RN equipment such as a PRB set by PRB set, a plurality of but the R-DCI that need send to this RN equipment has, such as sending the R-DCI that carries out uplink scheduling and carry out downlink transfer simultaneously; Also have a PRB set to distribute to a plurality of RN equipment, need send at least one R-DCI to each RN equipment.
Accordingly, RN equipment 20 detects R-DCI in the PRB of correspondence set.
Concrete, RN equipment 20 is determined initial CCE (Control ChannelElement, control channel element) position in the PRB of correspondence set, and begins to detect from the initial CCE that determines.
Determine that initial CCE and detection have multiple mode, enumerate below a kind of,
The descending control area of relaying is made up of the set of CCE, the numbering of CCE from 0 to N
CCE, k-1, N wherein
CCE, kIt is the number of CCE total in the descending control area in subframe k.RN equipment is R-PDCCH candidate collection of monitoring in each non-DRX (receiving continuously) subframe, and wherein Jian Ce implication is to attempt according to the form of every kind of R-DCI the R-PDCCH candidate collection being deciphered.
The R-PDCCH candidate collection that need to detect according to the search volume definition, wherein with the search volume S of certain polymerization size L
k (L)Definition be that set by a R-PDCCH candidate provides, at search volume S
k (L)In the CCEs of R-PDCCH candidate channel m provide by following formula:
Y wherein
kBe defined in below provide, i=0 ..., L-1, and m=0 ..., M
(L)-1, M
(L)It is the number that in given search volume, needs the R-PDCCH that detects.
RN equipment need detect the polymerization size in the common search space be every kind of R-PDCCH of 4 or 8, need detect the polymerization size simultaneously and be every kind of R-PDCCH of 1,2,4 or 8 in the search volume of a RN device assignment.The search volume of common search space and RN device assignment can be overlapping.
Provided the relation of polymerization size in the table 1 with the search volume:
The R-PDCCH candidate collection of form 1RN monitoring of equipment
For the common search space, its Y
kBe set to 0, the size of polymerization is L=4 and L=8.
For the polymerization size is the search volume S of the RN device assignment of L
k (L), its Y
kBe defined as follows shown in the face formula:
Y
k＝(A·Y
k-1)modD
Wherein, Y
kBe initial CCE numbering, Y
-1=n
RNTI≠ 0, A=39827, D=65537,
n
sIt is the timeslot number in the radio frames.
As shown in Figure 3, embodiment of the invention base station comprises: distribution module 100 and notification module 110.
Wherein, distribution module 100 can adopt semi-static mode to distribute the PRB set.When determining to satisfy the setting trigger condition, is RN devices allocation PRB set such as distribution module;
Determine when further, distribution module 100 can a kind of condition in following condition satisfies to satisfy and set trigger condition:
The duration that distribution module 100 is confirmed as the instruction that quantity changes, distribution module 100 acknowledges receipt of triggering of the RN equipment of self serving, distribution module 100 is confirmed sub-distribution PRB set on the distance when period allocated PRB gathers equals one-period.
Need to prove that the trigger condition of the embodiment of the invention is not limited to above-mentioned condition, other can trigger the condition of distributing the PRB set and be suitable for the embodiment of the invention equally.
Further, distribution module 100 can comprise identical or diverse PRB set for different RN devices allocation.
As shown in Figure 4, embodiment of the invention RN equipment comprises: receiver module 200 and processing module 210.
As shown in Figure 7, the method for first kind of down control channel resources distribution of the embodiment of the invention comprises the following steps:
Wherein, all or part of PRB forms the PRB set in the base station selected R-PDCCH zone, distributes to the RN equipment of self serving.
The resource information that the PRB that distributes is gathered in step 702, base station sends to the corresponding RN equipment of this PRB set.
From Figure 1A as can be seen, RN equipment links to each other with the base station, and the RN equipment that is to say base station services is exactly the RN equipment that links to each other with this base station.
In the step 701, the base station can select part or all of PRB to form the PRB set all PRB in the R-PDCCH zone behind each RN equipment of determining service, distributes to RN equipment.The R-PDCCH zone can be referring to Figure 1B and 1C.R-PDCCH area size difference, the quantity of PRB is also inequality.
In specific implementation process, the semi-static method of salary distribution can be adopted in the base station, and promptly the base station is redistributed the PRB set through some cycles for RN equipment.
The mode that triggers the base station and be RN devices allocation PRB has a variety of, is RN devices allocation PRB set such as the base station setting when trigger condition satisfies.
Determine when further, can a kind of condition in following condition satisfy the base station to satisfy and set trigger condition:
The duration that the instruction that quantity changes, the base station acknowledges receipt of artificial triggering of the RN equipment of self serving is confirmed as in the base station, sub-distribution PRB set on the distance is confirmed in the base station when period allocated PRB gathers equals one-period.
Need to prove that the trigger condition of the embodiment of the invention is not limited to above-mentioned condition, other can trigger the condition of distributing the PRB set and be suitable for the embodiment of the invention equally.
In the step 702, it is a variety of that the base station notifies the mode of RN equipment also to have resource information, such as resource information being placed high-level signaling (such as the RRC signaling) send to RN equipment.
PRB set corresponding resource information can be the numbering of all PRB in this set, also can be the information of all PRB positions in the unique identification set.Need to prove that embodiment of the invention resource information is not limited to above-mentioned two kinds, as long as can allow RN equipment determine that accurately the information of PRB can be as the resource information of the embodiment of the invention.
Suppose that resource information is the numbering of PRB, the base station is the PRB set that RN equipment 1 distributes numbering 1 and 2 correspondences, is the PRB set that RN equipment 2 distributes 4 and 5 correspondences, and then in the step 702, the base station will be numbered 1 and 2 and be sent to RN equipment 1 by high-level signaling; The base station will be numbered 4 and 5 and be sent to RN equipment 2 by high-level signaling.
The base station can comprise the PRB set of a PRB for the RN devices allocation when distributing the PRB set, also can comprise the PRB set of a plurality of PRB for the RN devices allocation, each RN devices allocation the quantity of the PRB that comprises of PRB set can be the same or different.The PRB set of concrete each RN devices allocation comprises that what PRB can distribute as required.
Gather if comprise the PRB of a plurality of PRB for the RN devices allocation, then a plurality of PRB can be continuous a plurality of PRB, referring to Fig. 5 A; Also can be a plurality of PRB of discrete (being partial continuous or discontinuous entirely), referring to Fig. 5 B.
If it is a plurality of that the RN equipment of base station services has, then the base station can comprise the PRB set of complete different PRB for different RN devices allocation.
The RN equipment of supposing base station services has two, and the base station is the PRB set that different RN devices allocation comprises complete different PRB, and then the PRB set that comprises continuous P RB can be distributed for RN equipment 1 and RN equipment 2 in the base station, referring to Fig. 6 A; The PRB set that comprises discrete PRB can also be distributed for RN equipment 1 and RN equipment 2 in the base station, referring to Fig. 6 B.
Certainly, the PRB set that comprises discrete PRB also can be distributed for RN equipment 1 distributes the PRB set that comprises continuous P RB in the base station for RN equipment 2.That is to say, when needs are gathered for a plurality of RN devices allocation PRB, can comprise the PRB set of continuous P RB, comprise the PRB set of discrete PRB for residue RN devices allocation for part RN devices allocation.
If it is a plurality of that the RN equipment of base station services has, then the base station can comprise the PRB set of identical PRB for different RN devices allocation.
The RN equipment of supposing base station services has two, and the base station is the PRB set that different RN devices allocation comprises identical PRB, and then the PRB set that comprises continuous P RB can be distributed for RN equipment 1 and RN equipment 2 in the base station, referring to Fig. 6 C; The PRB set that comprises discrete PRB can also be distributed for RN equipment 1 and RN equipment 2 in the base station, referring to Fig. 6 D.
If it is a plurality of that the RN equipment of base station services has, then the base station can comprise the PRB set of identical PRB for part RN devices allocation, comprises the PRB set of different PRB for all the other RN devices allocation.
The RN equipment of supposing base station services has 3, the base station is that RN equipment 1 distributes the PRB set that comprises identical PRB with RN equipment 2, for RN equipment 3 distributes the PRB set that comprises different PRB, then the PRB set that comprises continuous P RB can be distributed for RN equipment 1, RN equipment 2 and RN equipment 3 in the base station, referring to Fig. 6 E; The PRB set that comprises discrete PRB can also be distributed for RN equipment 1, RN equipment 2 and RN equipment 3 in the base station, referring to Fig. 6 F; The base station can also comprise continuously the PRB set of (or discrete) PRB for RN equipment 1 and RN equipment 2 distributes, for RN equipment 3 distributes the PRB set that comprises discrete (or continuously) PRB, referring to Fig. 6 G.
As shown in Figure 8, the method for second kind of down control channel resources distribution of the embodiment of the invention comprises the following steps:
Wherein, the RN device just will know oneself need go up the detection Downlink Control Information at which PRB (s), does not need to know the Downlink Control Information that also has which RN equipment on these PRB (s), does not also need to know the situation on other PRB (s).Behind the RN equipment access base station, according to receive from the resource information of base station just can determine the PRB set of self correspondence, just detection in definite PRB set then.If PRB distributes when need reconfigure, RN equipment can be received the resource information from the base station again, and redefines the PRB set and detect.
The base station is after the PRB set that has been the RN devices allocation, by the PRB set for the RN devices allocation of self service, to RN equipment transmission R-DCI; Accordingly, detect R-DCI in the PRB set of RN equipment correspondence.
The mode of base station and RN device transmission R-DCI can and Rel 8 versions between base station and the user terminal mode of transmission DCI similar.Certainly, also can not adopt in Rel 8 versions mode of transmission DCI between the base station and user terminal, other can make the base station all is to use the embodiment of the invention with R-DCI by the mode that PRB sends to RN equipment.
As shown in Figure 9, the method for embodiment of the invention transmission R-DCI comprises the following steps:
Each RN devices allocation PRB that step 901, base station are served for self gathers, and after the resource information that the PRB that distributes gathers being sent to the RN equipment of this PRB set correspondence, definite R-DCI that need carry out the RN equipment correspondence of downlink transfer.
Wherein, the PRB in the PRB set is the PRB in the R-PDCCH zone.
After step 902, base station interweave the R-DCI that needs in each PRB set to send respectively, be mapped in the corresponding PRB set and transmission.
The concrete mode of determining initial CCE position is identical with the mode of definite initial CCE position in the system that embodiment of the invention down control channel resources distributes, does not repeat them here.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative notion of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
From the foregoing description as can be seen: embodiment of the invention base station each via node RN devices allocation PRB for self serving, wherein the PRB in the PRB set is the PRB in the R-PDCCH zone, the PRB in the PRB set is used to carry R-DCI; The base station sends to the resource information of the PRB of distribution the RN equipment of this PRB correspondence.
Owing in the LTE-A system, can be via node devices allocation R-PDCCH resource, make the base station to send R-DCI by R-PDCCH, via node equipment can receive R-DCI by the R-PDCCH that distributes, and has improved the resource utilization and the reliability of Network Transmission.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (17)
1. the down control channel resources method of distributing is characterized in that this method comprises:
Gather for each via node RN devices allocation Physical Resource Block PRB of self service the base station, PRB in the wherein said PRB set is the PRB in the relaying Physical Downlink Control Channel R-PDCCH zone, and the PRB in the described PRB set is used to carry relaying Downlink Control Information R-DCI;
The resource information that the PRB that distributes is gathered in described base station sends to the corresponding RN equipment of this PRB set.
2. the method for claim 1 is characterized in that, described base station adopts semi-static mode to distribute the PRB set;
Described base station sends to the corresponding RN equipment of this PRB set with the resource information that the PRB that distributes gathers by high-level signaling.
3. the method for claim 1 is characterized in that, described base station assigns PRB comprises:
Described base station comprises that for the PRB set of each RN devices allocation one or more PRB, wherein said a plurality of PRB are continuous or discrete.
4. as the described method of the arbitrary claim of claim 1～3, it is characterized in that described base station is that the PRB set of different RN devices allocation comprises identical or diverse PRB.
5. method as claimed in claim 2 is characterized in that, described base station adopts semi-static mode to distribute the PRB set to comprise:
Described base station is RN devices allocation PRB set when determining to satisfy the setting trigger condition.
6. the down control channel resources method of distributing is characterized in that this method comprises:
Via node RN equipment receives the resource information that the base station sends, wherein said resource information is that the base station generates according to the Physical Resource Block PRB set for the RN devices allocation, PRB in the described PRB set is the PRB in the relaying Physical Downlink Control Channel R-PDCCH zone, and the PRB in the described PRB set is used to carry relaying Downlink Control Information R-DCI;
Described RN equipment is determined corresponding PRB set according to the resource information that receives, and detects relaying Downlink Control Information R-DCI in the PRB set of determining.
7. the system that distributes of a down control channel resources is characterized in that this system comprises:
The base station, be used to each via node RN devices allocation Physical Resource Block PRB set of self serving, the resource information that the PRB that distributes is gathered sends to the corresponding RN equipment of this PRB set, PRB in the wherein said PRB set is the PRB in the relaying Physical Downlink Control Channel R-PDCCH zone, and the PRB in the described PRB set is used to carry relaying Downlink Control Information R-DCI;
RN equipment is used for determining corresponding PRB set according to the resource information that receives, and detects relaying Downlink Control Information R-DCI in the PRB set of determining.
8. system as claimed in claim 7 is characterized in that, described base station specifically is used for:
Adopt semi-static mode to distribute the PRB set, and the resource information that the PRB that distributes gathers is sent to the corresponding RN equipment of this PRB set by high-level signaling.
9. system as claimed in claim 7 is characterized in that, described base station specifically is used for:
The PRB that comprises one or more PRB for each RN devices allocation gathers, and wherein said a plurality of PRB are continuous or discrete.
10. as the described system of the arbitrary claim of claim 7～9, it is characterized in that described base station specifically is used for:
Comprise the PRB set of identical or complete different PRB for different RN devices allocation.
11. system as claimed in claim 8 is characterized in that, described base station specifically is used for:
When determining to satisfy the setting trigger condition, be RN devices allocation PRB set.
12. a base station is characterized in that, this base station comprises:
Distribution module, be used to each via node RN devices allocation Physical Resource Block PRB set of service, PRB in the wherein said PRB set is the PRB in the relaying Physical Downlink Control Channel R-PDCCH zone, and the PRB in the described PRB set is used to carry relaying Downlink Control Information R-DCI;
Notification module, the resource information that the PRB that is used for distributing gathers send to the corresponding RN equipment of this PRB set.
13. base station as claimed in claim 12 is characterized in that, described distribution module specifically is used for:
Adopt semi-static mode to distribute the PRB set;
Described notification module specifically is used for:
The resource information that the PRB that distributes is gathered sends to the corresponding RN equipment of this PRB set by high-level signaling.
14. base station as claimed in claim 12 is characterized in that, described distribution module specifically is used for:
The PRB that comprises one or more PRB for each RN devices allocation gathers, and wherein said a plurality of PRB are continuous or discrete.
15., it is characterized in that described distribution module specifically is used for as the described base station of the arbitrary claim of claim 12～14:
Comprise the PRB set of identical or complete different PRB for different RN devices allocation.
16. base station as claimed in claim 13 is characterized in that, described distribution module specifically is used for:
When determining to satisfy the setting trigger condition, be RN devices allocation PRB set.
17. a via node RN equipment is characterized in that, this RN equipment comprises:
Receiver module, be used to receive the resource information that the base station sends, wherein said resource information is that the base station generates according to the Physical Resource Block PRB set for the RN devices allocation, PRB in the described PRB set is the PRB in the relaying Physical Downlink Control Channel R-PDCCH zone, and the PRB in the described PRB set is used to carry relaying Downlink Control Information R-DCI;
Processing module is used for determining corresponding PRB set according to the resource information that receives, and detects relaying Downlink Control Information R-DCI in the PRB set of determining.
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| CN2009102432210A CN102111880A (en) | 2009-12-29 | 2009-12-29 | Method, system and equipment for allocating downlink control channel resources |
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| CN2009102432210A CN102111880A (en) | 2009-12-29 | 2009-12-29 | Method, system and equipment for allocating downlink control channel resources |
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