CN102355732A - Downlink control information transmission method and device - Google Patents
Downlink control information transmission method and device Download PDFInfo
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- CN102355732A CN102355732A CN2011102311459A CN201110231145A CN102355732A CN 102355732 A CN102355732 A CN 102355732A CN 2011102311459 A CN2011102311459 A CN 2011102311459A CN 201110231145 A CN201110231145 A CN 201110231145A CN 102355732 A CN102355732 A CN 102355732A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Abstract
The invention discloses a downlink control information transmission method and device. The method comprises: allocating a resource cluster for an E-PDCCH (enhanced-physical downlink control channel) of a receiving end, and notifying the receiving end of the location information of the resource cluster, wherein the resource cluster comprises Nc resource forks, and each resource fork is composed of NSRBP sub-resource block pairs (subRB pairs); based on a determined aggregation level, allocating resource in the resource cluster for downlink control information, and transmitting the downlink control information on the allocated resource to the receiving end, wherein the minimal unit of the allocated information is subRB pair; and based on an optional aggregation level, the receiving end obtaining the downlink control information in available resources in a blind detection manner by the receiving end, wherein the minimal unit is subRB pair. The invention provides a resource allocation method and blind detection scheme based on the subRB pair so as to support an E-PDCCH transmission scheme based on the subRB pair.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of downlink control information transmission method and device.
Background technology
At LTE (Long Term Evolution; Long Term Evolution) in the system; PDCCH (PhysicalDownlink Control Channel; Physical Downlink Control Channel) data are sent in each wireless sub-frame; And with descending PDSCH (Physical Downlink Shared Channel; Physical Downlink Shared Channel) data form TDM (Time Division Multiple, time division multiplexing) relation.PDCCH sends through the top n OFDM symbol of a descending sub frame, and wherein the possible value of N is 1,2,3,4, and N=4 only allows to appear in the system that system bandwidth is 1.4MHz.
Be illustrated in figure 1 as the multiplexing sketch map that concerns of control area and data area in the descending sub frame; The control area of transmission PDCCH is CCE (the Control ChannelElement by logical partitioning in the LTE system; The control channel unit) constitutes; Wherein CCE has adopted the mode that interweaves fully to the mapping of RE (Resource Element, Resource Unit).DCI (Downlink Control Information; Downlink Control Information) it is unit that transmission also is based on CCE; A DCI to a UE can send in N continuous CCE; The possible value of N is 1 in the LTE system; 2; 4,8, be called CCE polymerization grade (Aggregation Level).
UE carries out the PDCCH blind check in the control area; Whether search exists the PDCCH to its transmission; RNTI (the Radio Network Temporary Identifier of this UE is promptly used in blind check; Radio Network Temporary Identifier) to the trial of decoding of different DCI forms and CCE polymerization grade; If decoding is correct, then receive DCI to this UE.LTE UE each descending sub frame in non-DRX (Discontinuous Reception, discontinuous reception) state all need carry out blind check to the control area, search PDCCH.
Because MU-MIMO, CoMP, technology such as carrier aggregation and with the introducing of configurations such as the RRH of sub-district ID, 8 antennas, the capacity of the PDSCH of LTE-A system and efficiency of transmission will significantly be promoted; And early stage relatively LTE version (like Rel-8/9), the PDSCH of LTE-A system does not but benefit from new technology and obtains to promote.
On the one hand, The application of new technique makes the PDSCH can be simultaneously for more users provide transfer of data, and this will improve the demand to the PDCCH channel capacity greatly; On the other hand, the DM-RS that in PDSCH, uses and R (Relay)-new technologies such as PDCCH of in relaying back haul link Relay backhaul, using are that the enhancing of PDCCH provides governed technology and experience.
Limited in order to solve the PDCCH capacity, and the efficiency of transmission of raising Downlink Control Information, present a solution is: send the PDCCH that strengthens in the PDSCH territory when keeping original PDCCH territory in descending sub frame.
Original PDCCH still adopts existing transmission and reception technique in the territory; Use original PDCCH resource; As adopt when sending to send and divide collection; During reception based on CRS (Cell Reference Signal; Cell reference signals); Adopt the blind check technology DCI to be carried out blind check in common search space and user-specific search volume; Taking top n OFDM symbol sends; Wherein the possible value of N is 1; 2,3,4; And N=4 only allows to appear in the system that system bandwidth is 1.4MHz, and this part PDCCH territory is called legacy PDCCH territory.
More advanced transmission and reception technique can be used in the PDCCH territory that strengthens; As adopt precoding when sending; Detect based on DM-RS during reception; The running time-frequency resource that takies beyond the legacy PDCCH territory sends; Use the part resource of original PDSCH; Realize multiplexingly with the mode of PDSCH through frequency division, this part PDCCH territory is called Enhanced PDCCH territory.Be illustrated in figure 2 as the PDCCH resource occupation mode sketch map of enhancing.This Enhanced PDCCH and PDSCH realize that through the frequency division mode multiplexing scheme is called FDM E-PDCCH.
In the FDM E-PDCCH scheme, every Downlink Control Information DCI in the Enhanced PDCCH territory takies 1 couple of Physical Resource Block PRB (Physical Resource Block, Physical Resource Block) pair at least.On the one hand, the original bit number fewer (DCI format 1C is generally tens bits, and bigger DCI format also is no more than 60 bits as 2/2C) that comprises inside each bar DCI.On the other hand, the number of resources in each PRB pair is more, as shown in table 1.When carrying out the DCI transmission, can cause frequency efficiency low excessively, thereby cause the waste of resource according to existing FDM E-PDCCH scheme.
Each PRB pair of table 1 can be used for the RE number (conventional CP) of E-PDCCH transmission
To this problem, each PRB pair can be divided into the experimental process piece according to frequency domain, be called the child resource piece to subRB pair, every DCI can make a PRB pair can transmit many DCI at most by one or more subRB pair transmission.The resource allocation in E-PDCCH territory is a unit with subRB pair, and the precoding granularity of data is a unit with subRB pair or some subRB pair, specifically as shown in Figure 3.
Yet, at present also not based on the resource allocation methods of subRB pair and blind Detecting scheme with the E-PDCCH transmission plan of support based on subRB pair.
Summary of the invention
The present invention provides a kind of downlink control information transmission method and device, and resource allocation methods and blind Detecting scheme based on subRB pair are provided, to support the E-PDCCH transmission plan based on subRB pair.
The present invention provides a kind of downlink control information sending method, comprising:
For the enhancing Physical Downlink Control Channel E-PDCCH of receiving terminal distributes available resource bunch, and with the location information notification receiving terminal of said resource bunch, said resource bunch comprises Nc resource part, and each resource part is by N
SRBPIndividual sub-Resource Block constitutes subRB pair, Nc, N
SRBPBe positive integer;
By the polymerization grade of confirming; In said resource bunch is the Downlink Control Information Resources allocation; On the resource of being distributed, transmit Downlink Control Information to receiving terminal; The least unit of the resource of being distributed is a least unit for subRB pair, and the polymerization grade is meant the subRB pair number that institute's Resources allocation comprises.
The present invention also provides a kind of Downlink Control Information method of reseptance, comprising:
The positional information for the resource of E-PDCCH distribution bunch of receiving end/sending end transmission, said resource bunch comprise Nc resource part, and each resource part is by N
SRBPIndividual sub-Resource Block constitutes subRB pair, Nc, N
SRBPBe positive integer;
Confirm the resource that the transmission Downlink Control Information can be used according to the positional information of said resource bunch;
With subRB pair is least unit, based on optional polymerization grade, in said available resource, obtains Downlink Control Information with the mode of blind check.
The present invention also provides a kind of Downlink Control Information dispensing device, comprising:
Available resources notification unit, the enhancing Physical Downlink Control Channel E-PDCCH that is used to receiving terminal distribute available resource bunch, and with the location information notification receiving terminal of said resource bunch, and said resource bunch comprises Nc resource part, and each resource part is by N
SRBPIndividual sub-Resource Block constitutes subRB pair, Nc, N
SRBPBe positive integer;
Distribute transmission unit; By the polymerization grade of confirming; In said resource bunch is the Downlink Control Information Resources allocation; On the resource of being distributed, transmit Downlink Control Information to receiving terminal; The least unit of the resource of being distributed is a least unit for subRB pair, and the polymerization grade is meant the subRB pair number that institute's Resources allocation comprises.
The present invention also provides a kind of Downlink Control Information receiving system, comprising:
The resource notification receiving element is used for the positional information for the resource of E-PDCCH distribution bunch of receiving end/sending end transmission, and said resource bunch comprises Nc resource part, and each resource part is by N
SRBPIndividual sub-Resource Block constitutes subRB pair, Nc, N
SRBPBe positive integer;
Available resources are confirmed the unit, are used for confirming the resource that the transmission Downlink Control Information can be used according to the positional information of said resource bunch;
The downlink information acquiring unit, being used for subRB pair is least unit, based on optional polymerization grade, in said available resource, obtains Downlink Control Information with the mode of blind check.
Utilize downlink control information transmission method provided by the invention and device; Has following beneficial effect: the Downlink Control Information method of sending and receiving based on subRB pair is provided; Thereby support E-PDCCH transmission plan based on subRB pair; Improve the PDCCH channel capacity effectively, capacity and the efficiency of transmission of the PDSCH of LTE-A system will significantly be promoted.
Description of drawings
Fig. 1 is the multiplexing sketch map that concerns of control area and data area in the LTE/LTE-A system descending subframe;
Fig. 2 is for strengthening the PDCCH structural representation;
Fig. 3 is for to be divided into the subRB pair sketch map that obtains behind the experimental process piece with PRB pair;
Fig. 4 is a downlink control information sending method flow chart in the embodiment of the invention;
Fig. 5 is the E-PDCCH resource bunch sketch map of example in the embodiment of the invention;
Fig. 6 is a Downlink Control Information method of reseptance flow chart in the embodiment of the invention;
Fig. 7 is an embodiment of the invention downlink control information sending method structure chart;
Fig. 8 is a Downlink Control Information method of reseptance structure chart in the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment downlink control information transmission method provided by the invention and device are illustrated in greater detail.
As previously mentioned, in the LTE/LTE-A system, original PDCCH refers to exist with PDSCH the PDCCH of TDM relation, and strengthening Physical Downlink Control Channel E-PDCCH (Enhanced PDCCH) is the PDCCH that has the frequency division multiplexing relation with PDSCH.In order to improve the efficiency of transmission of E-PDCCH; A kind of transmission method of Downlink Control Information is for to be divided into the experimental process piece with each PRB pair by frequency domain; Be called the child resource piece to subRB pair, a Downlink Control Information DCI can be by one or more subRB pair transmission.Yet, at present also not based on the resource allocation methods of subRB pair and blind Detecting scheme with the E-PDCCH transmission plan of support based on subRB pair.The embodiment of the invention provides a kind of Downlink Control Information method of sending and receiving, thereby provides based on the resource allocation methods of subRB pair and blind Detecting scheme to support the E-PDCCH transmission plan based on subRB pair.
As shown in Figure 4, the downlink control information sending method that the embodiment of the invention provides specifically comprises:
Each PRB pair is divided into the experimental process piece by frequency domain; Obtain the child resource piece to subRB pair; The number of the subRB pair that each resource part cluster part is comprised in the embodiment of the invention is identical; And when comprising a plurality of subRB pair; Preferably; A plurality of subRB pair are continuous, and the frequency domain interval between adjacent 2 cluster part can be identical, also can be different.
Particularly, above-mentioned Nc, N
SRBPConcrete value can confirm as required.
Particularly, can be through the location information notification receiving terminal of high-level signaling with said resource bunch.
The embodiment of the invention provides the downlink control information sending method based on subRB pair; Thereby support to send based on the E-PDCCH data of subRB pair; Improve the PDCCH channel capacity effectively, capacity and the efficiency of transmission of the PDSCH of LTE-A system will significantly be promoted.
The location information notification receiving terminal of the resource of being distributed bunch can be adopted multiple mode, as long as can realize notifying the mode of the position at each resource part place in the resource that receiving terminal distributes bunch all passable.
Preferably; In the embodiment of the invention with the original position notice receiving terminal of each resource part in the value of Nc, resource bunch; As with the initial subRB pair of each resource part in the resource bunch numbering in resource bunch, or the Physical Resource Block PRB numbering and the numbering notice receiving terminal of said initial subRB pair in this PRB at the initial subRB pair of each resource part place in the resource bunch.
Preferably, when the frequency domain interval of every adjacent two resource part is identical, with the original position notice receiving terminal of predetermined in the frequency domain interval of the value of Nc, adjacent two resource part, a resource bunch resource part.As with the initial subRB pair of the predetermined resource part numbering in resource bunch, or the Physical Resource Block PRB numbering at the initial subRB pair of predetermined resource part place and the numbering notice receiving terminal of said initial subRB pair in this PRB.
Preferably; Nc gets predetermined value; When the frequency domain interval of every adjacent two resource part is got predetermined value; These two predetermined values are different usually; Original position notice receiving terminal with predetermined in a resource bunch resource part; As with the initial subRB pair of the predetermined resource part numbering in resource bunch, or the Physical Resource Block PRB numbering at the initial subRB pair of predetermined resource part place and the numbering notice receiving terminal of said initial subRB pair in this PRB.
Preferably; Nc gets predetermined value; When the frequency domain interval of satisfied every adjacent two resource part is identical; Original position notice receiving terminal with each resource part in the resource bunch; As with the initial subRB pair of each resource part in the resource bunch numbering in resource bunch, or the Physical Resource Block PRB numbering and the numbering notice receiving terminal of said initial subRB pair in this PRB at the initial subRBpair of each resource part place in the resource bunch.
Preferably; Nc gets predetermined value; When the frequency domain interval of every adjacent two resource part is identical; Original position notice receiving terminal with predetermined in the frequency domain interval of adjacent two resource part, a resource bunch resource part; As with the initial subRB pair of the predetermined resource part numbering in resource bunch, or the Physical Resource Block PRB numbering at the initial subRB pair of predetermined resource part place and the numbering notice receiving terminal of said initial subRB pair in this PRB.
Preferably, a predetermined resource part in the resource bunch is specially in the said resource bunch by frequency domain first resource part from the low frequency to the high frequency sorting, or for press first resource part that frequency domain sorts from the high frequency to the low frequency.Certainly can also other resource part appointing, grade like the Resources Department of centre.
The predetermined value that above-mentioned Nc got can be the fixed value of getting setting, or gets the value calculated by pre-defined rule etc., therefore can appoint in advance with user terminal and does not need to notify again.
Preferably, when being the E-PDCCH Resources allocation bunch of receiving terminal at every turn, said N
SRBPValue be fixed value or the dynamic value through signaling configuration.N
SRBPBut value can confirm according to polymerization grade selected value, as be any one value or its multiple value of the polymerization grade of PDCCH, or be fixed as a value or its multiple value of the polymerization grade of PDCCH.According to present standard, the polymerization grade of legacy PDCCH comprises 1,2,4 and 8.Preferably, if the polymerization grade of reusing legacy PDCCH, when then being the E-PDCCH Resources allocation bunch of receiving terminal at every turn, above-mentioned N
SRBPValue can be 1,2,4,8 or 16 etc., can be fixed as the some values in 1,2,4,8,16, its N
SRBPValue can notify receiving terminal by high-level signaling, can not notify yet.
Preferably, the frequency domain interval between adjacent two resource part is the integral multiple of subRB pair in the said resource bunch.
Preferably, said Downlink Control Information comprises down dispatch information (descending grant) and/or uplink scheduling information (up grant); When comprising uplink scheduling information and down dispatch information simultaneously, for down dispatch information resource of distributing and the resource of distributing for uplink scheduling information do not overlap each other.
Preferably, the resource of distributing for down dispatch information comprises first subRB pair of one of them resource part; And/or the resource of distributing for uplink scheduling information does not comprise first subRB pair of any one resource part.
In the embodiment of the invention,, in available resources, select a resource part, with 1～N of resource part for down dispatch information
DLIndividual continuous subRB pair distributes to said down dispatch information, wherein N
DL＜=N
SRBP, N wherein
DLPolymerization grade for definite down dispatch information.
In the embodiment of the invention,, in available resources, select a resource part, with L～L+N in the resource part for uplink scheduling information
ULIndividual subRB pair distributes to said uplink scheduling information, wherein N
ULBe the polymerization grade of definite uplink scheduling information, N
UL＜=N
SRBP, L is the integer greater than 1, value in the predetermined scope.
Particularly, the subRB pair size that can reach according to the original bit number of up grant and descending grant confirms to go up the polymerization grade of grant and descending grant use respectively.
Particularly, N
DLValue be a value of original PDCCH polymerization grade; N
ULValue be a value of original PDCCH polymerization grade.Certainly, also can define new polymerization grade value.
For descending grant, for each optional polymerization grade, can also further limit the corresponding subRB pair span of each polymerization grade, for up grant, further limit the corresponding subRB pair span of each polymerization grade.Thereby define the search volume, the blind check number of times that makes user terminal still less, speed is faster, complexity is lower.Provide according to the E-PDCCH available resources method of salary distribution in the above embodiment of the present invention the search volume example of descending grant and up grant behind the limit search space below.
Example 1
As shown in Figure 5, each resource part cluster part is made up of subRB pair 8 sub-Resource Block.
For descending grant
If a) the polymerization grade is 1, the resource that possibly distribute for 1}, and promptly in the resource bunch each cluster part be numbered 1 subRB pair;
B) if the polymerization grade is 2, the resource that possibly distribute for 1,2}, promptly in the resource bunch each cluster part be numbered 1,2 subRB pair;
C) if the polymerization grade is 4, the resource that possibly distribute for 1,2,3,4}, promptly in the resource bunch each clusterpart be numbered 1,2,3,4 subRB pair;
D) if support and have the polymerization grade to be 8, the resource that possibly distribute for 1,2,3,4,5,6,7,8}, promptly in the resource bunch each cluster part be numbered 1,2,3,4,5,6,7,8 subRB pair.
In order to support that can use the polymerization grade is 8, the subRB pair of each cluster part should be at least 8.
For up grant
If a) the polymerization grade is 1, the resource that possibly distribute for 2}, and promptly in each resource bunch cluster part be numbered 2 subRB pair;
B) if the polymerization grade is 2, the resource that possibly distribute for 3,4}, promptly in each resource bunch cluster part be numbered 3,4 subRB pair
C) if the polymerization grade is 4, the resource that possibly distribute for 5,6,7,8}, promptly in the resource bunch each clusterpart be numbered 5,6,7,8 subRB pair
D) if support and have the polymerization grade to be 8, the resource that possibly distribute for 9,10,11,12,13,14,15,16}, promptly in the resource bunch each cluster part be numbered 9,10,11,12,13,14,15,16 subRB pair.
In order to support up and down schedule information to use the polymerization grade simultaneously is 8, and the subRB pair of each cluster part should be at least 16.
For descending grant
If a) the polymerization grade is 1, the resource that possibly distribute is { 1};
B) if the polymerization grade is 2, the resource that possibly distribute for 1,2};
C) if the polymerization grade is 4, the resource that possibly distribute for 1,2,3,4};
D) if support and have the polymerization grade to be 8, the resource that possibly distribute for 1,2,3,4,5,6,7,8}.
For up grant
If a) the polymerization grade is 1, the resource that possibly distribute is { 2};
B) if the polymerization grade is 2, the resource that possibly distribute for 3,4} or 5,6};
C) if the polymerization grade is 4, the resource that possibly distribute for 3,4,5,6} or 5,6,7,8};
D) if support and have the polymerization grade to be 8, the resource that possibly distribute for 5,6,7,8,9,10,11,12} or 9,10,11,12,13,14,15,16}.
In order to support up and down schedule information to use the polymerization grade simultaneously is 8, and the subRB pair of each cluster part should be at least 16.
For descending grant
If a) the polymerization grade is 1, the resource that possibly distribute is { 1};
B) if the polymerization grade is 2, the resource that possibly distribute for 1,2};
C) if the polymerization grade is 4, the resource that possibly distribute for 1,2,3,4};
D) if support and have the polymerization grade to be 8, the resource that possibly distribute for 1,2,3,4,5,6,7,8}.
For up grant
If a) the polymerization grade is 1, the resource that possibly distribute is { 2} or { 3}
B) if the polymerization grade is 2, the resource that possibly distribute for 3,4} or 5,6}
C) if the polymerization grade is 4, the resource that possibly distribute for 3,4,5,6} or 5,6,7,8}
D) if support and have the polymerization grade to be 8, the resource that possibly distribute for 5,6,7,8,9,10,11,12} or 9,10,11,12,13,14,15,16}.
In order to support up and down schedule information to use the polymerization grade simultaneously is 8, and the subRB pair of each cluster part should be at least 16.
For descending grant
If a) the polymerization grade is 1, the resource that possibly distribute is { 1};
B) if the polymerization grade is 2, the resource that possibly distribute for 1,2};
C) if the polymerization grade is 4, the resource that possibly distribute for 1,2,3,4};
D) if support and have the polymerization grade to be 8, the resource that possibly distribute for 1,2,3,4,5,6,7,8}.
For up grant
If a) the polymerization grade is 1, the resource that possibly distribute (the time-frequency granularity of enhanced PDCCH resource as shown in Figure 4) is { 2} or { 3};
B) if the polymerization grade is 2, the resource that possibly distribute for 3,4} or 5,6};
C) if the polymerization grade is 4, the resource that possibly distribute for 5,6,7,8} or 9,10,11,12};
D) if support and have the polymerization grade to be 8, the resource that possibly distribute for 5,6,7,8,9,10,11,12} or 9,10,11,12,13,14,15,16}.
In order to support up and down schedule information to use the polymerization grade simultaneously is 8, and the subRB pair of each cluster part should be at least 16.
The embodiment of the invention is when the limit search space, and the subRB pair that uplink scheduling information and down dispatch information possibly distributed is not overlapping and adjacent.The mode in limit search space is not limited to the mode that above-mentioned example provides, certainly, can not limit yet, promptly user terminal on available resources according to the polymerization grade, to the resource that might distribute carry out blind check.
Based on the downlink control information sending method that the above embodiment of the present invention provides, the embodiment of the invention also provides a kind of Downlink Control Information method of reseptance, as shown in Figure 6, comprising:
Step 602 is confirmed the resource that the transmission Downlink Control Information can be used according to the positional information of said resource bunch;
Through the positional information of resource bunch, can confirm the position of each resource part, thereby can confirm that the base station carries out the resource that the Downlink Control Information resource allocation might be used.
Step 603 is a least unit with subRB pair, based on optional polymerization grade, in said available resource, obtains Downlink Control Information with the mode of blind check.
The embodiment of the invention based on the Downlink Control Information method of reseptance of subRB pair; Thereby support E-PDCCH Data Receiving based on subRB pair; Improve the PDCCH channel capacity effectively, capacity and the efficiency of transmission of the PDSCH of LTE-A system will significantly be promoted.
The particular content of the positional information of resource bunch is participated in the description of front embodiment, repeats no more here.
Particularly,, in said available resource, obtain Downlink Control Information, until detecting Downlink Control Information DCI or accomplishing all possible detection with the mode of blind check for each optional polymerization grade.
Preferably, Downlink Control Information comprises down dispatch information and/or uplink scheduling information, and then: the resource that down dispatch information can be used is the N that comprises first subRB pair of resource part
DL' individual subRBpair, wherein, N
DL' be the possible value of institute of the polymerization grade of down dispatch information, N
DL'＜=N
SRBPThe resource that uplink scheduling information can be used is the N of first subRB pair of not comprising resource part
UL' individual subRB pair, wherein, N
UL' be the possible value of institute of the polymerization grade of uplink scheduling information, N
UL'＜=N
SRBP
Preferably, the resource that said down dispatch information can be used is 1～N of each resource part
DL' individual continuous subRB pair, then user terminal is at 1～N of each resource part
DL' on the individual continuous subRB pair, detect until detecting Downlink Control Information DCI or accomplishing all possible detection.
Preferably, the resource that uplink scheduling information can be used is the L～L+N of each resource part
UL' individual continuous subRB pair, L is the integer greater than 1, value in the predetermined scope.Then user terminal is at the L～L+N of each resource part
UL' on the individual continuous subRB pair, detect until detecting Downlink Control Information DCI or accomplishing all possible detection.
Particularly, if the polymerization grade of reusing legacy PDCCH, N
DL' possibly value be 1,2,4,8, N
UL' possibly value be 1,2,4,8.
If define the search volume, then carry out blind check in the search volume of user terminal after qualification, be numbered { 1} like blind check in each cluster part scope; 1,2}, { 1; 2,3,4} and { 1; 2; 3,4,5; 6; 7, the subRB pair of 8} supposes to be divided into and has joined 2 resource part; The size of each resource part all is not less than 8 subRB pair; Then accomplishing descending blind check needs 2*2*4=16 blind check at most, and wherein, first 2 expression needs 2 kinds of descending DCI of blind Detecting; Represent totally 2 resource part for second 2,4 expressions one have 4 possible E-PDCCH channel resources.
Below in conjunction with the example 1～4 of the top search volume that provides, provide the example 1～4 of user terminal blind check accordingly.
Example 1
To search volume described in the earlier examples 1; Suppose to be divided into and joined 2 resource part; The size of each resource part all is not less than 16 subRB pair; If support the Uplink MIMO transmission; Then accomplishing up blind check needs 2*2*4=16 blind check at most, and wherein, first 2 expresses support for the Uplink MIMO transmission and the time need 2 kinds of up DCI of blind Detecting; Represent totally 2 resource part for second 2,4 expressions one have 4 possible E-PDCCH channel resources; If do not support the Uplink MIMO transmission; Then accomplish up blind check and need blind Detecting at most 1*2*4=8 time; 1 expression needs a kind of up DCI of blind Detecting when not supporting the Uplink MIMO transmission, 2 resources parts of 2 expressions, and 4 expressions one have 4 possible E-PDCCH channel resources.
Example 2
In like manner; To search volume described in the earlier examples 2; Suppose to be divided into and joined 2 resource part; The size of each resource part all is not less than 16 subRB pair, if support the Uplink MIMO transmission, then accomplishing up blind check needs 2*2*7=28 blind check at most; Wherein, First 2 expresses support for the Uplink MIMO transmission and the time needs 2 kinds of up DCI of blind Detecting, second 2 expression totally 2 resources partly, 7 expressions one have 7 possible E-PDCCH channel resources; If do not support the Uplink MIMO transmission; Then accomplish up blind check and need blind Detecting at most 1*2*7=14 time; 1 expression needs a kind of up DCI of blind Detecting when not supporting the Uplink MIMO transmission, 2 resources parts of 2 expressions, and 7 expressions one have 7 possible E-PDCCH channel resources.
Example 3
In like manner; To search volume described in the earlier examples 3; Suppose to be divided into and joined 2 resources partly; Each resource size partly all is not less than 16 subRB pair, if support the Uplink MIMO transmission, then accomplishing up blind check needs 2*2*8=32 blind check at most; Wherein, First 2 expresses support for the Uplink MIMO transmission and the time needs 2 kinds of up DCI of blind Detecting, second 2 expression totally 2 resources partly, 8 expressions one have 8 possible E-PDCCH channel resources; If do not support the Uplink MIMO transmission; Then accomplish up blind check and need blind Detecting at most 1*2*8=16 time; 1 expression needs a kind of up DCI of blind Detecting when not supporting the Uplink MIMO transmission, 2 resources parts of 2 expressions, and 8 expressions one have 8 possible E-PDCCH channel resources.
Example 4
With example 3 in like manner; To search volume described in the earlier examples 4; Suppose to be divided into and joined 2 resources partly; Each resource size partly all is not less than 16 subRB pair, if support the Uplink MIMO transmission, then accomplishing up blind check needs 2*2*8=32 blind check at most; Wherein, First 2 expresses support for the Uplink MIMO transmission and the time needs 2 kinds of up DCI of blind Detecting, second 2 expression totally 2 resources partly, 8 expressions one have 8 possible E-PDCCH channel resources; If do not support the Uplink MIMO transmission; Then accomplish up blind check and need blind Detecting at most 1*2*8=16 time; 1 expression needs a kind of up DCI of blind Detecting when not supporting the Uplink MIMO transmission, 2 resources parts of 2 expressions, and 8 expressions one have 8 possible E-PDCCH channel resources.
Based on same inventive concept; A kind of Downlink Control Information dispensing device, a kind of Downlink Control Information receiving system also are provided in the embodiment of the invention; Because the principle of these device solves problems and a kind of descending control sending method, a kind of Downlink Control Information method of reseptance are similar; Therefore the enforcement of these equipment can repeat part and repeat no more referring to the enforcement of method.
As shown in Figure 7, the Downlink Control Information dispensing device that the embodiment of the invention provides comprises:
Available resources notification unit 701 is used to the enhancing Physical Downlink Control Channel E-PDCCH Resources allocation bunch of receiving terminal, and with the location information notification receiving terminal of said resource bunch, and said resource bunch comprises Nc resource part, and each resource part is by N
SRBPIndividual sub-Resource Block constitutes subRB pair, Nc, N
SRBPBe positive integer;
Distribute transmission unit 702; By the polymerization grade of confirming; In said resource bunch is the Downlink Control Information Resources allocation; On the resource of being distributed, transmit Downlink Control Information to receiving terminal; The least unit of the resource of being distributed is subRB pair, and the polymerization grade is meant the subRB pair number that institute's Resources allocation comprises.
Preferably, said Downlink Control Information dispensing device is the evolution base station in the LTE-A system.
As shown in Figure 8, the Downlink Control Information receiving system that the embodiment of the invention provides comprises:
Resource notification receiving element 801 is used for the positional information for the resource of E-PDCCH distribution bunch of receiving end/sending end transmission, and said resource bunch comprises Nc resource part, and each resource part is by N
SRBPIndividual sub-Resource Block constitutes subRB pair, Nc, N
SRBPBe positive integer;
Available resources are confirmed unit 802, are used for confirming the resource that the transmission Downlink Control Information can be used according to the positional information of said resource bunch;
Downlink information acquiring unit 803, being used for subRB pair is least unit, based on optional polymerization grade, in said available resource, obtains Downlink Control Information with the mode of blind check.
Preferably, the Downlink Control Information receiving system is the user terminal in the LTE-A system.
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 the form of the embodiment of complete hardware embodiment, complete software implementation example or combination software and hardware aspect.And the present invention can be employed in the form that 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 go up the computer program of implementing.
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 through 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 ability 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 on computer or other programmable devices, carrying out 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 inventive concept could of cicada, then can make other change and modification to these embodiment.So accompanying claims is intended to be interpreted as all changes and the modification that comprises preferred embodiment and fall into the scope of the invention.
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, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (39)
1. a downlink control information sending method is characterized in that, comprising:
Be the enhancing Physical Downlink Control Channel E-PDCCH Resources allocation of receiving terminal bunch, and with the location information notification receiving terminal of said resource bunch, said resource bunch comprises Nc resource part, and each resource part is by N
SRBPIndividual sub-Resource Block constitutes subRB pair, Nc, N
SRBPBe positive integer;
By the polymerization grade of confirming; In said resource bunch is the Downlink Control Information Resources allocation; To receiving terminal transmission Downlink Control Information, the least unit of the resource of being distributed is subRB pair on the resource of being distributed, and the polymerization grade is meant the subRB pair number that institute's Resources allocation comprises.
2. the method for claim 1 is characterized in that, the location information notification receiving terminal with resource bunch specifically comprises:
Original position notice receiving terminal with each resource part in the value of Nc, resource bunch.
3. the method for claim 1 is characterized in that, the frequency domain interval of every adjacent two resource part is identical, then with the location information notification receiving terminal of resource bunch, specifically comprises:
Original position notice receiving terminal with predetermined in the frequency domain interval of the value of Nc, adjacent two resource part, a resource bunch resource part.
4. the method for claim 1 is characterized in that, Nc gets predetermined value, and when the frequency domain interval of every adjacent two resource part was got predetermined value, the location information notification receiving terminal with resource bunch comprised:
Original position notice receiving terminal with predetermined in a resource bunch resource part.
5. the method for claim 1 is characterized in that, Nc gets predetermined value, does not satisfy the frequency domain interval of every adjacent two resource part when identical, and the location information notification receiving terminal with resource bunch comprises:
Original position notice receiving terminal with each resource part in the resource bunch.
6. the method for claim 1 is characterized in that, Nc gets predetermined value, and when the frequency domain interval of every adjacent two resource part was identical, the location information notification receiving terminal with resource bunch comprised:
Original position notice receiving terminal with predetermined in the frequency domain interval of adjacent two resource part, a resource bunch resource part.
7. like the arbitrary described method of claim 2～6; It is characterized in that; The original position of resource part; The numbering of the initial subRB pair that is specially this resource part in resource bunch, or the Physical Resource Block PRB numbering and the numbering of said initial subRB pair in said PRB at the initial subRB pair of this resource part place.
8. the method for claim 1 is characterized in that, when being the E-PDCCH Resources allocation bunch of receiving terminal at every turn, and said N
SRBPValue be fixed value or the dynamic value through signaling configuration.
9. the method for claim 1 is characterized in that, the frequency domain interval in the said resource bunch between adjacent two resource part is the integral multiple of subRB pair.
10. the method for claim 1 is characterized in that, said Downlink Control Information comprises down dispatch information and/or uplink scheduling information;
When comprising uplink scheduling information and down dispatch information simultaneously, for down dispatch information resource of distributing and the resource of distributing for uplink scheduling information do not overlap each other.
11. method as claimed in claim 10 is characterized in that,
First subRB pair that comprises one of them resource part for the resource of down dispatch information distribution;
And/or the resource of distributing for uplink scheduling information does not comprise first subRB pair of any one resource part.
12. method as claimed in claim 11 is characterized in that, the resource of distributing for down dispatch information is the 1st～N of one of them resource part
DLIndividual continuous subRB pair, wherein N
DLPolymerization grade for down dispatch information.
13. method as claimed in claim 11 is characterized in that, the resource of distributing for uplink scheduling information is the L～L+N of one of them resource part
ULIndividual subRB pair, wherein N
ULBe the polymerization grade of uplink scheduling information, L is the integer greater than 1, value in the predetermined scope.
14. a Downlink Control Information method of reseptance is characterized in that, comprising:
The positional information for the resource of E-PDCCH distribution bunch of receiving end/sending end transmission, said resource bunch comprise Nc resource part, and each resource part is by N
SRBPIndividual sub-Resource Block constitutes subRB pair, Nc, N
SRBPBe positive integer;
Confirm the resource that the transmission Downlink Control Information can be used according to the positional information of said resource bunch;
With subRB pair is least unit, based on optional polymerization grade, in said available resource, obtains Downlink Control Information with the mode of blind check.
15. method as claimed in claim 14 is characterized in that, the positional information of said resource bunch is specially the original position of each resource part in the value of Nc, resource bunch.
16. method as claimed in claim 14; It is characterized in that; When the frequency domain interval of every adjacent two resource part was identical, the positional information of said resource bunch was specially the original position of predetermined in the frequency domain interval of the value of Nc, adjacent two resource part, a resource bunch resource part.
17. method as claimed in claim 14 is characterized in that, said Nc gets predetermined value, and when the frequency domain interval of every adjacent two resource part was got predetermined value, the positional information of said resource bunch was specially the original position of predetermined in a resource bunch resource part.
18. method as claimed in claim 14 is characterized in that Nc gets predetermined value, does not satisfy the frequency domain interval of every adjacent two resource part when identical, the positional information of said resource bunch is specially the original position of each resource part in the resource bunch.
19. method as claimed in claim 14; It is characterized in that; Nc gets predetermined value, and when the frequency domain interval of every adjacent two resource part was identical, the positional information of said resource bunch was specially the original position of predetermined in the frequency domain interval of adjacent two resource part, a resource bunch resource part.
20. method as claimed in claim 14 is characterized in that, said Downlink Control Information comprises down dispatch information and/or uplink scheduling information, then:
The resource that said down dispatch information can be used is the N that comprises first subRB pair of resource part
DL' individual subRB pair, wherein, N
DL' be the possible value of institute of the polymerization grade of down dispatch information;
The resource that said uplink scheduling information can be used is the N of first subRB pair of not comprising resource part
UL' individual subRB pair, wherein, N
UL' be the possible value of institute of the polymerization grade of uplink scheduling information.
21. method as claimed in claim 20 is characterized in that,
The resource that said down dispatch information can be used is 1～N of each resource part
DL' individual continuous subRBpair;
The resource that said uplink scheduling information can be used is the L～L+N of each resource part
UL' individual continuous subRB pair, L is the integer greater than 1, value in the predetermined scope.
22. a Downlink Control Information dispensing device is characterized in that, comprising:
The available resources notification unit is used to the enhancing Physical Downlink Control Channel E-PDCCH Resources allocation bunch of receiving terminal, and with the location information notification receiving terminal of said resource bunch, and said resource bunch comprises Nc resource part, and each resource part is by N
SRBPIndividual sub-Resource Block constitutes subRB pair, Nc, N
SRBPBe positive integer;
Distribute transmission unit; By the polymerization grade of confirming; In said resource bunch is the Downlink Control Information Resources allocation; On the resource of being distributed, transmit Downlink Control Information to receiving terminal; The least unit of the resource of being distributed is subRB pair, and the polymerization grade is meant the subRB pair number that institute's Resources allocation comprises.
23. device as claimed in claim 22 is characterized in that, the available resources notification unit is with the original position notice receiving terminal of each resource part in the value of Nc, resource bunch.
24. device as claimed in claim 22; It is characterized in that; The frequency domain interval of every adjacent two resource part is identical, and the available resources notification unit is with the original position notice receiving terminal of predetermined in the frequency domain interval of the value of Nc, adjacent two resource part, a resource bunch resource part.
25. device as claimed in claim 22 is characterized in that Nc gets predetermined value, when the frequency domain interval of every adjacent two resource part was got predetermined value, the available resources notification unit was with the original position notice receiving terminal of predetermined in a resource bunch resource part.
26. device as claimed in claim 22 is characterized in that Nc gets predetermined value, does not satisfy the frequency domain interval of every adjacent two resource part when identical, the available resources notification unit is with the original position notice receiving terminal of each resource part in the resource bunch.
27. device as claimed in claim 22; It is characterized in that; Nc gets predetermined value, and when the frequency domain interval of every adjacent two resource part was identical, the original position of a predetermined resource part was notified receiving terminal in the frequency domain interval that the available resources notification unit will adjacent two resource part, resource bunch.
28. like the arbitrary described device of claim 23～27; It is characterized in that; The original position of resource part; The numbering of the initial subRB pair that is specially this resource part in resource bunch, or the Physical Resource Block PRB numbering and the numbering of said initial subRB pair in said PRB at the initial subRB pair of this resource part place.
29. device as claimed in claim 22 is characterized in that, the available resources notification unit, and when being the E-PDCCH Resources allocation bunch of receiving terminal at every turn, N
SRBPValue be fixed value or the dynamic value through signaling configuration.
30. device as claimed in claim 22 is characterized in that, the frequency domain interval in the said resource bunch between adjacent two resource part is the integral multiple of subRB pair.
31. device as claimed in claim 22 is characterized in that, said Downlink Control Information comprises down dispatch information and/or uplink scheduling information; When comprising uplink scheduling information and down dispatch information simultaneously, distributing transmission unit is that down dispatch information resource of distributing and the resource of distributing for uplink scheduling information do not overlap each other.
32. device as claimed in claim 31 is characterized in that, the distribution transmission unit is first subRB pair that the resource of down dispatch information distribution comprises one of them resource part; And/or the resource of distributing for uplink scheduling information does not comprise first subRB pair of any one resource part.
33. device as claimed in claim 32 is characterized in that, distributing transmission unit is that the resource that down dispatch information distributes is the 1st～N of one of them resource part
DLIndividual continuous subRB pair, wherein N
DLPolymerization grade for down dispatch information.
34. device as claimed in claim 32 is characterized in that, distributes transmission unit, the resource of distributing for uplink scheduling information is the L～L+N of one of them resource part
ULIndividual subRB pair, wherein N
ULBe the polymerization grade of uplink scheduling information, L is the integer greater than 1, value in the predetermined scope.
35. device as claimed in claim 32 is characterized in that, said Downlink Control Information dispensing device is the evolution base station in the LTE-A system.
36. a Downlink Control Information receiving system is characterized in that, comprising:
The resource notification receiving element is used for the positional information for the resource of E-PDCCH distribution bunch of receiving end/sending end transmission, and said resource bunch comprises Nc resource part, and each resource part is by N
SRBPIndividual sub-Resource Block constitutes subRB pair, Nc, N
SRBPBe positive integer;
Available resources are confirmed the unit, are used for confirming the resource that the transmission Downlink Control Information can be used according to the positional information of said resource bunch;
The downlink information acquiring unit, being used for subRB pair is least unit, based on optional polymerization grade, in said available resource, obtains Downlink Control Information with the mode of blind check.
37. device as claimed in claim 36 is characterized in that, said Downlink Control Information comprises down dispatch information and/or uplink scheduling information, then
Available resources are confirmed the unit, and the resource that definite down dispatch information can be used is the N that comprises first subRB pair of resource part
DL' individual subRB pair, wherein, N
DL' be the possible value of institute of the polymerization grade of down dispatch information;
Available resources are confirmed the unit, and the resource that definite uplink scheduling information can be used is the N of first subRB pair of not comprising resource part
UL' individual subRB pair, wherein, N
UL' be the possible value of institute of the polymerization grade of uplink scheduling information.
38. device as claimed in claim 37 is characterized in that,
Available resources are confirmed the unit, and the resource that definite said down dispatch information can be used is 1～N of each resource part
DL' individual continuous subRB pair;
Available resources are confirmed the unit, and the resource that definite uplink scheduling information can be used is the L～L+N of each resource part
UL' individual continuous subRB pair, L is the integer greater than 1, value in the predetermined scope.
39. device as claimed in claim 36 is characterized in that, said Downlink Control Information receiving system is the user terminal in the LTE-A system.
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| CN2011102311459A CN102355732A (en) | 2011-08-12 | 2011-08-12 | Downlink control information transmission method and device |
| PCT/CN2012/079837 WO2013023541A1 (en) | 2011-08-12 | 2012-08-08 | Method and device for transmitting downlink control information |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011102311459A CN102355732A (en) | 2011-08-12 | 2011-08-12 | Downlink control information transmission method and device |
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| CN2011102311459A Pending CN102355732A (en) | 2011-08-12 | 2011-08-12 | Downlink control information transmission method and device |
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| WO (1) | WO2013023541A1 (en) |
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