CN102307083A - Aperiodic feedback of CSI (channel state information) as well as scheduling method, device and system thereof - Google Patents
Aperiodic feedback of CSI (channel state information) as well as scheduling method, device and system thereof Download PDFInfo
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Abstract
The invention discloses aperiodic feedback of CSI (channel state information) as well as a scheduling method, device and system thereof, thus realizing the aperiodic feedback of the CSI supporting the transmission of an enhanced E-PDCCH (physical downlink control channel). The method comprises the following steps: receiving a downlink signaling, wherein the downlink signaling is used for triggering the aperiodic feedback of the CSI supporting the transmission of the E-PDCCH; acquiring the CSI to be fed back in accordance with an estimated value of a downlink channel, wherein the CSI comprises sub-band CQI (channel quality indicator) information corresponding to sub-bands which are obtained by dividing available resources transmitted by the configured E-PDCCH; and sending the CSI to the base station side at a set time after the downlink signaling is received.
Description
Technical field
The present invention relates to communication technical field, be meant a kind of feedback and dispatching method, Apparatus and system aperiodic of channel condition information especially.
Background technology
At Long Term Evolution (LTE; Long-tern evoluation) in the system; Physical Downlink Control Channel (PDCCH; Physical downlink control channel) in each wireless sub-frame, sends; And with Physical Downlink Shared Channel (PDSCH; Physical downlink shared channel) the multiplexing relation of formation time division multiplexing (TDM, time division multiplexing).PDCCH sends through top n orthogonal frequency division multiplexed (OFDM, the orthogonal frequency division multiplexing) 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.
The multiplexing relation signal of control area and data area in descending sub frame of Fig. 1.Referring to shown in Figure 2; The control area of transmission PDCCH is the control channel unit (CCE by logical partitioning in the LTE system; Control channel element) constitute, wherein CCE has adopted the mode that interweaves fully to the mapping of Resource Unit (RE, resource element).Downlink Control Information (DCI; Downlink control information) it is unit that transmission also is based on CCE; To a subscriber equipment (UE; User equipment) a DCI can send in N continuous CCE; The possible value of N is 1,2,4 in the LTE system; 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; Wireless network temporary indentification (the RNTI 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 discontinuous reception (DRX, discontinuous reception) state all need carry out blind check to the control area, search PDCCH.
Because multi-user's multiple-input and multiple-output (MU-MIMO; Multi-user multiple-input multiple-output); Coordinate multipoint (CoMP; Coordinated multiple point); Technology and same cell identifier (identifier such as carrier aggregation; ID) far-end do not have the end of a thread (remote redio head, RRH), the introducing of configuration such as 8 antennas, the capacity of the Physical Downlink Shared Channel of LTE-Advanced system and efficiency of transmission will significantly be promoted; And early stage relatively LTE version (like Rel-8/9), the Physical Downlink Control Channel of LTE-Advanced system is not but benefited from new technology and is obtained 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; User-specific reference signal (the UE-RS that in PDSCH, uses; User-specific reference signal) (R-PDCCH, Relay-PDCCH) etc. new technology is that the enhancing of PDCCH provides governed technology and experience to the relaying PDCCH that uses and in relaying backhaul (Relay backhaul).
Limited in order to solve the down control channel capacity, and the efficiency of transmission of raising Downlink Control Information, 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 the exclusive reference signal (CRS in sub-district; Cell-specific reference signal) 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, 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.This Enhanced PDCCH and PDSCH realize that through frequency division multiplexing (FDM, frequency division multiplexing) mode multiplexing scheme is called FDM E-PDCCH.
The employed resource location of PDSCH can be indicated through the Downlink Control Information DCI among the PDCCH, and for the PDCCH that strengthens, a kind of method is can only be through the employed resource location of high-level signaling indication E-PDCCH.Because the mutual cycle of high-level signaling is longer,, then can make E-PDCCH can't fully obtain the frequency selectivity gain if by the definite E-PDCCH resource location of high-level signaling indication.So generally speaking, high-level signaling can distribute one group of available resources for E-PDCCH, and the part resource can be selected for E-PDCCH based on the channel condition information that UE fed back in the base station in the available resources scope of high level configuration in transmission.When UE carries out the reception of E-PDCCH resource, can in the available resources scope of high level configuration, carry out the E-PDCCH blind Detecting.Thereby obtain the compromise of the blind check complexity and the scheduling degree of freedom.
A kind of enhancing of Fig. 2 PDCCH structure.Referring to shown in Figure 2, support to strengthen the PDCCH transmission, need corresponding channel condition information feedback.Like channel quality indication (channel quality indicator; CQI) be used for the user and dispatch, confirm polymerization grade and/or adjustment Modulation and Coding Scheme (modulation and coding scheme; MCS) and/or MU-MIMO pairing etc.; Pre-coding matrix indication (precoding matrix indicator; PMI) be used for confirming wave beam forming, multi-subscriber dispatching and MU-MIMO pairing etc., RI information can be used for specified data and transmit the employed number of plies etc.
Support 5 kinds of channel condition information feedback models aperiodic in the LTE/LTE-A system at present, as shown in table 1.
Table 1:CQI and PMI Feedback Types for PUSCH CSI reporting Modes
Wherein, Pattern 1-2 is broadband CQI feedback; Thereby possibly only take more precise channels feedback information etc. of higher needs of transmission reliability that running time-frequency resource seldom needs owing to the E-PDCCH data volume is less; Existing pattern 1-2 can't provide the frequency domain granularity littler CQI information for E-PDCCH, therefore is not suitable for E-PDCCH channel transmitted state information feedback;
Pattern 2-0 and 2-2 are used for subband CQI (or PMI/CQI) and the broadband CQI (or PMI/CQI) that feedback user is selected; On the one hand; If adopt one group of available resources of high-rise configuration to combine the UE blind Detecting to confirm the mode of E-PDCCH resource location; The selected subband CQI of UE is not necessarily in the available resources scope that high level disposed; At this moment, can't littler PMI of frequency domain granularity and/or CQI information be provided for E-PDCCH; On the other hand, pairing subband of subband CQI among pattern 2-0 and the 2-2 and BP (portions of bandwidth, bandwidth part) size is relevant with system bandwidth, as shown in table 2, does not consider the available resources situation of high-rise configuration.Because the less frequency domain resource that it takies of E-PDCCH data volume maybe be much smaller than the subband size in the present subband CQI feedback, therefore, pattern 2-0 and 2-2 can not support the E-PDCCH transmission well;
Table 2:Subband Size (k) vs.Downlink System Bandwidth
Mode 3-0 and mode 3-1 is used for broadband CQI (or CQI/PMI) and subband CQI feedback.With identical problem among pattern 2-0 and the 2-2, subband CQI pairing relevant with system bandwidth and with the available resources situation of not considering high-rise configuration.In addition, do not comprise in the mode 3-1 that subband PMI reports, can't satisfy E-PDCCH demand than small particle size PMI feedback.
In the feedback model that comprises the RI feedback; Order indication (the RI that transmission is fed back to PDSCH; Rank indication) value possibility higher (maximum RI=8); And only need low-rank (Rank) even only need the transmission of Rank=1; When feedback PMI is high Rank; And the number of data layers that E-PDCCH transmission is supported be lower than when feeding back the RI value; PMI can only obtain through the code book Nested property; The PMI information of this moment often is not bad to the spatial channel information quantification of low Rank, thereby can cause the transmission performance of E-PDCCH not good.
In sum, the PDCCH of enhancing transmission utilizes transmission technologys such as original PDSCH resource, employing wave beam forming can improve the efficiency of transmission of PDCCH capacity and raising PDCCH.Compare the general data transmission; Thereby the PDCCH that strengthens since data volume lessly possibly only take seldom running time-frequency resource, only need low Rank even only need the higher needs of the transmission reliability precise channels feedback information etc. more of transmission, the needs of Rank=1, specifically:
Pattern 1-2 can't satisfy the E-PDCCH channel condition information feedback requirements less to the frequency domain granularity;
Selected subband is not necessarily joined in the E-PDCCH available resources scope in high-rise institute among pattern 2-0 and the pattern 2-2, can't satisfy the E-PDCCH channel condition information feedback requirements less to the frequency domain granularity this moment equally; And pattern RI that 2-2 feeds back possibly be higher than the maximum Rank number that the E-PDCCH transmission can be supported, the low Rank PMI that utilizes this moment Nested property to obtain quantizes performance and has loss.
Mode 3-0 can't satisfy E-PDCCH to the demand than small particle size PMI feedback with 3-1.
Therefore the PDCCH transmission that the existing feedback model that designs to the general data transmission will be not suitable for strengthening.
Summary of the invention
The present invention provides a kind of feedback and dispatching method, Apparatus and system aperiodic of channel condition information, makes its feedback aperiodic for the downlink physical control channel E-PDCCH channel transmitted state information of supporting to strengthen.
Feedback method aperiodic of a kind of channel condition information that the embodiment of the invention provides comprises:
Receive downlink signaling, said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing;
Based on the estimated value of down channel, obtain channel condition information to be feedback, said channel condition information comprises the pairing subband CQI of the subband information that the partition of available resources of the E-PDCCH transmission of being disposed becomes;
Setting-up time after receiving said downlink signaling sends said channel condition information to base station side.
Feedback method aperiodic of a kind of scheduling channel state information that the embodiment of the invention provides comprises:
Send downlink signaling to end side, said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing;
The channel condition information of receiving terminal side feedback, said channel condition information comprise the pairing subband CQI of the subband information that the partition of available resources of the E-PDCCH transmission of being disposed becomes.
Feedback device aperiodic of a kind of scheduling channel state information that the embodiment of the invention provides comprises:
Scheduling unit is used for sending downlink signaling to end side, and said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing;
Receiving element is used for the channel condition information that the receiving terminal side is fed back, and said channel condition information comprises the pairing subband CQI of the subband information that the partition of available resources of the E-PDCCH transmission that will be disposed becomes.
Feedback device aperiodic of a kind of channel condition information that the embodiment of the invention provides comprises:
Receiving element is used to receive downlink signaling, and said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing;
Channel estimating unit is used for the estimated value based on down channel, obtains channel condition information to be feedback, and said channel condition information comprises the pairing subband CQI of the subband information that the partition of available resources of the E-PDCCH transmission of being disposed becomes;
Transmitting element is used for the setting-up time after receiving said downlink signaling, sends said channel condition information to base station side.
A kind of reponse system aperiodic of dispatching the scheduling channel state information that the embodiment of the invention provides comprises:
The base station is used for sending downlink signaling to end side, and said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing; The channel condition information of receiving terminal side feedback;
The terminal is used to receive downlink signaling, and said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing; Based on the estimated value of down channel, obtain channel condition information to be feedback, said channel condition information comprises the pairing subband CQI of the subband information that the partition of available resources of the E-PDCCH transmission of being disposed becomes; Setting-up time after receiving said downlink signaling sends said channel condition information to base station side.
In the embodiment of the invention; Since end side receive be used to trigger the downlink physical control channel E-PDCCH channel transmitted status information of supporting to strengthen aperiodic feedback downlink signaling after; Estimated value based on down channel; Obtain channel condition information to be feedback; And said channel condition information comprises the pairing subband CQI of the subband information that the partition of available resources of the E-PDCCH transmission of being disposed becomes; It is few to take running time-frequency resource when transmitting with the PDCCH that adapts to enhancing; The characteristics that need low Rank and high feedback accuracy; Therefore, can better support the PDCCH that strengthens to transmit.
Description of drawings
Fig. 1 is the multiplexing sketch map that concerns of control area and data area in the descending sub frame;
Fig. 2 is the structural representation of a kind of PDCCH of enhancing;
Fig. 3 is feedback method schematic flow sheet aperiodic of present embodiment channel condition information;
Fig. 4 is feedback method schematic flow sheet aperiodic of embodiment of the invention scheduling channel state information;
Fig. 5 is the structural representation of the corresponding device of the method shown in Figure 3 of the embodiment of the invention;
Fig. 6 is the structural representation of the corresponding device of the method shown in Figure 4 of the embodiment of the invention;
Figure be 7 for the embodiment of the invention realize the schedule information state information aperiodic feedback the system configuration sketch map.
Embodiment
Take the characteristics that running time-frequency resource is few, need low Rank and high feedback accuracy when transmitting to the PDCCH that strengthens; Present embodiment is in end side; Receive downlink signaling, said downlink signaling is used to trigger feedback aperiodic of the E-PDCCH channel transmitted state information of supporting enhancing; Based on the estimated value of down channel, obtain channel condition information to be feedback, wherein, comprise the pairing subband CQI of the subband information of the partition of available resources one-tenth of the E-PDCCH transmission of being disposed; Setting-up time after receiving said downlink signaling sends said channel condition information to base station side.
Present embodiment sends downlink signaling in base station side to end side, and said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing; The channel condition information of receiving terminal side feedback, said channel condition information comprise the included pairing subband CQI of the subband information of available resources of the E-PDCCH transmission of being disposed.
Wherein, can be M subband with the partition of available resources of said E-PDCCH transmission of disposing, wherein, M is an integer, and M＞=1.
Referring to shown in Figure 3, feedback method aperiodic of the channel condition information of present embodiment is equivalent to the processing procedure at terminal, specifically comprises:
Step 301: receive downlink signaling, said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing.
Step 302: based on the estimated value of down channel, obtain channel condition information to be feedback, said channel condition information comprises the pairing subband CQI of the subband information that the partition of available resources of the E-PDCCH transmission of being disposed becomes.
Step 303: the setting-up time after receiving said downlink signaling, send said channel condition information to base station side.
The available resources of said E-PDCCH transmission of disposing comprise M the resource part that frequency domain is continuous, between the continuous resource part of frequency domain frequency domain interval are arranged, and the continuous resource part of each frequency domain is a subband.
Said channel condition information can also comprise subband PMI information or broadband P MI information, and said subband PMI information comprises the subband PMI that calculates based on RI=1, and said broadband P MI information comprises the broadband P MI that calculates based on RI=1.RI=1 is the default that end side adopts here, also can adopt other preset fixed values.At this moment, subband CQI is based on that RI=1 and determined PMI value calculate.
When said channel condition information can also comprise broadband P MI information, the total bandwidth of the available resources that said broadband range can be transmitted for the E-PDCCH of downlink system broadband or configuration.
Based on the scheme of above-mentioned each embodiment, further said channel condition information can also comprise the RI information that reports, and the span of said RI information is RI information＜=N, and N is a natural number.As: N=2.
Said channel condition information can also comprise PMI information and the subband CQI information of calculating based on the RI that reports, such as: when Rank=1 and the Rank=2, the PMI information and the subband CQI information of correspondence.Said PMI information is subband PMI information or broadband P MI information; Or said PMI information comprises subband PMI information and broadband P MI information.
Concrete, said channel condition information can send to base station side through Physical Uplink Control Channel PUSCH.
When said channel condition information comprises subband CQI information, comprise the subdomain that is used to carry CQI information among the said PUSCH.This mode is designated as: PUSCH mode e-0-1, shown in table 3a, comprise 1 PUSCH territory, and be used to report subband CQI.Wherein, B
SubCQIRepresent the bit number that each subband CQI is comprised.
| Field | Bit?width |
| subband?CQI | M*B subCQI |
Table 3a
When said channel condition information comprises subband PMI information and subband CQI information, comprise a subdomain that is used to carry subband CQI information and subband PMI information among the said PUSCH, be designated as; PUSCH mode e-1-1; As show shown in the 3b, comprise 1 PUSCH territory, be used to report subband PMI/CQI.Wherein, PMI and CQI are based on RI=1 and calculate, and subband CQI is based on that subband PMI calculates, B
SubPMIRepresent the bit number that each subband PMI is comprised.
| Field | Bit?width |
| subband?CQI | M ＊B subCQI |
| Subband?PMI | M ＊B subPMI |
Table 3b
Certainly, when said channel condition information comprises subband PMI information and subband CQI information, can also comprise a subdomain that is used to carry subband PMI information, and a subdomain that is used to carry subband CQI information.
When said channel condition information comprises RI information, subband PMI information and subband CQI information, can comprise a subdomain and a subdomain that is used to carry subband PMI information and subband CQI information that is used to carry RI information among the said PUSCH.Be designated as PUSCH mode e-1-2, comprise two PUSCH territories, be respectively applied for and report RI and subband PMI/CQI.As show shown in the 3c, for RI reports the territory, the bit bandwidth is 1.Shown in table 3d, subband PMI/CQI reports subband CQI and the subband PMI when comprising RI=1 and R1=2 in the territory.Wherein, B
SubPMIThe bit number that each subband PMI that expression is calculated based on RI=1 is comprised, B
SubCQIThe bit number that each subband CQI that expression is calculated based on RI=1 is comprised, B
SubPMI2The bit number that each subband PMI that expression is calculated based on RI=2 is comprised, B
SubCQI2The bit number that each subband CQI that expression is calculated based on RI=2 is comprised.
| Field | Bit?width |
| RI | 1 |
Table 3c
| Field | Bit?width |
| subband?CQI?on?assumption?of?RI＝1 | M*B subCQI |
| subband?CQI?on?assumption?of?RI＝2 | M*B subCQI2 |
| Subband?PMI?on?assumption?of?RI＝1 | M*B subPMI |
| Subband?PMI?on?assumption?of?RI＝2 | M*B subPMI2 |
Table 3d
As another kind of embodiment, particularly, said channel condition information can comprise RI, broadband P MI, subband PMI, subband CQI, is designated as PUSCH mode e-1-3.RI reports the territory identical with table 3c.Subband PMI/CQI and broadband P MI report the territory shown in table 3e.
| ?Field | ?Bit?width |
| ?subband?CQI?on?assumption?of?RI＝1 | ?M＊B subCQI |
| ?subband?CQI?on?assumption?of?RI＝2 | ?M＊B subCQI2 |
| ?Subband?PMI?on?assumption?of?RI＝1 | ?M＊B subPMI |
| ?wideband?PMI?on?assumption?of?RI＝2 | ?B subPMI2 |
Table 3e
As another kind of embodiment, particularly, said channel condition information can comprise RI, subband PMI, subband CQI, is designated as PUSCH mode e-1-4.RI reports the territory identical with table 3c.Subband PMI/CQI reports the territory shown in table 3e.Wherein, B
SubPMIxThe bit number that each subband PMI that expression is calculated based on reporting RI is comprised, B
SubCQIxThe bit number that each subband CQI that expression is calculated based on reporting RI is comprised.
| Field | Bit?width |
| subband?CQI?on?assumption?of?RI | M ＊B subCQIx |
| Subband?PMI?on?assumption?of?RI | M ＊B subPMIx |
Table 3f
Referring to shown in Figure 4, feedback method aperiodic of a kind of scheduling channel state information of the embodiment of the invention is equivalent to the processing method of base station side, specifically may further comprise the steps:
Step 401: send downlink signaling to end side, said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing;
Step 402: the channel condition information of receiving terminal side feedback, said channel condition information comprise the pairing subband CQI of the subband information that the partition of available resources of the E-PDCCH transmission of being disposed becomes.
Said channel condition information also comprises subband PMI information.Said subband PMI information comprises the subband PMI that calculates based on RI=1.
Said channel condition information also comprises broadband P MI information, and said broadband range is the total bandwidth of available resources of the E-PDCCH transmission of downlink system broadband or configuration.Said subband PMI information comprises the broadband P MI that calculates based on RI=1.
Said channel condition information also comprises the RI information that reports, and the span of said RI information is RI information＜=N, and N is a natural number.
Said channel condition information also comprises PMI information and the subband CQI information of calculating based on the RI that reports, such as: when Rank=1 and the Rank=2, the PMI information and the subband CQI information of correspondence.Wherein, said PMI information is subband PMI information or broadband P MI information; Or said PMI information comprises subband PMI information and broadband P MI information.
Base station side can receive channel condition information through Physical Uplink Control Channel PUSCH.
When said channel condition information comprises subband CQI information, comprise the subdomain that is used to carry CQI information among the said PUSCH.Concrete, from form relative sub area, obtain subband CQI information.
When said channel condition information comprises subband PMI information and subband CQI information, comprise a subdomain that is used to carry subband CQI information and subband PMI information among the said PUSCH; Or comprise a subdomain that is used to carry subband PMI information, and subdomain that is used to carry subband CQI information.From form relative sub area, obtain subband CQI information, perhaps subband CQI information and subband subband PMI information.
When said channel condition information comprises RI information, subband PMI information and subband CQI information, comprise a subdomain and a subdomain that is used to carry subband PMI information and subband CQI information that is used to carry RI information among the said PUSCH; Or comprise a subdomain that is used to carry RI information, subband PMI information and subband CQI information.From form relative sub area, obtain subband CQI information and subband PMI information, and RI information.
From the PUSCH subdomain, receive corresponding channel condition information.Concrete identical with the subdomain of end side channel transmitted state information, repeat no more here.
Referring to shown in Figure 5, feedback device aperiodic of a kind of channel condition information that present embodiment provides is equivalent to the terminal, comprising:
Receiving element 51 is used to receive downlink signaling, and said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing;
Channel estimating unit 52 is used for the estimated value based on down channel, obtains channel condition information to be feedback, and said channel condition information comprises the pairing subband CQI of the subband information that the partition of available resources of the E-PDCCH transmission of being disposed becomes;
Transmitting element 53 is used for the setting-up time after receiving said downlink signaling, sends said channel condition information to base station side.
Said transmitting element can be used for said channel condition information is sent to base station side through Physical Uplink Control Channel PUSCH.
Concrete, the various execution modes of the subdomain information among the available resources of said E-PDCCH transmission of disposing, said channel condition information, the PUSCH, identical with method shown in Figure 3, repeat no more here.
Referring to shown in Figure 6, feedback device aperiodic of a kind of scheduling channel state information of present embodiment is equivalent to the base station, specifically comprises: scheduling unit 61 and receiving element 62.
Receiving element 62 is used for the channel condition information that the receiving terminal side is fed back, and said channel condition information comprises the pairing subband CQI of the subband information that the partition of available resources of the E-PDCCH transmission that will be disposed becomes.
Concrete, the various execution modes of the subdomain information among said channel condition information, the PUSCH, identical with method shown in Figure 4, repeat no more here.
Said receiving element 62 can be in receiving said channel condition information through Physical Uplink Control Channel PUSCH.
Referring to shown in Figure 7, a kind of reponse system aperiodic of dispatching the scheduling channel state information of present embodiment comprises: base station 71 and terminal 72.
Terminal 72 is used to receive downlink signaling, and said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing; Based on the estimated value of down channel, obtain channel condition information to be feedback, said channel condition information comprises the pairing subband CQI of the subband information that the partition of available resources of the E-PDCCH transmission of being disposed becomes; Setting-up time after receiving said downlink signaling sends said channel condition information to base station side.
Concrete, mutual between terminal and the base station, and the various execution modes of the subdomain information in the available resources of said E-PDCCH transmission of disposing, said channel condition information, PUSCH, identical with Fig. 3 and method shown in Figure 4, repeat no more here.
Present embodiment takies running time-frequency resource characteristics few, that need to hang down Rank and high feedback accuracy and designs when being directed against the PDCCH transmission that strengthens, thereby can support the PDCCH that strengthens to transmit better.
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 (33)
1. feedback method aperiodic of a channel condition information is characterized in that, this method comprises:
Receive downlink signaling, said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing;
Based on the estimated value of down channel, obtain channel condition information to be feedback, said channel condition information comprises that the partition of available resources of the E-PDCCH transmission of being disposed becomes the pairing sub-band channel quality indication of subband CQI information;
Setting-up time after receiving said downlink signaling sends said channel condition information to base station side.
2. the method for claim 1 is characterized in that, the available resources of said E-PDCCH transmission of disposing are divided into M subband, and wherein, M is an integer, and M＞=1.
3. method as claimed in claim 2; It is characterized in that; The available resources of said E-PDCCH transmission of disposing comprise M the resource part that frequency domain is continuous, between the continuous resource part of frequency domain frequency domain interval are arranged, and the continuous resource part of each frequency domain is a subband.
4. the method for claim 1 is characterized in that, said channel condition information also comprises subband pre-coding matrix indication PMI information, and said subband PMI information comprises based on order RI and equals the 1 subband PMI that calculates.
5. the method for claim 1; It is characterized in that; Said channel condition information also comprises broadband P MI information; Said broadband range is the total bandwidth of available resources of the E-PDCCH transmission of downlink system broadband or configuration, and said broadband P MI information comprises based on RI and equals the 1 broadband P MI that calculates.
6. the method for claim 1 is characterized in that, said channel condition information also comprises the RI information that reports, and the span of said RI information is RI information＜=N, and N is a natural number.
7. like any described method in the claim 1～6, it is characterized in that said channel condition information also comprises PMI information and the subband CQI information of calculating based on the RI that reports, wherein,
Said PMI information is subband PMI information or broadband P MI information; Or said PMI information comprises subband PMI information and broadband P MI information.
8. the method for claim 1 is characterized in that, said channel condition information sends to base station side through Physical Uplink Control Channel PUSCH.
9. method as claimed in claim 8 is characterized in that,
Comprise the subdomain that is used to carry subband CQI information among the said PUSCH;
When said channel condition information also further comprises subband PMI information, comprise a subdomain that is used to carry subband CQI information and subband PMI information among the said PUSCH; Or comprise a subdomain that is used to carry subband PMI information, and subdomain that is used to carry subband CQI information;
When said channel condition information also further comprises RI information and subband PMI information, comprise a subdomain and a subdomain that is used to carry subband PMI information and subband CQI information that is used to carry RI information among the said PUSCH;
When said channel condition information also further comprises RI information, subband PMI information and broadband P MI information; Comprise a subdomain that is used to carry the subdomain of RI information and is used to carry subband PMI information, broadband P MI information and subband CQI information among the said PUSCH.
10. feedback method aperiodic of a scheduling channel state information is characterized in that, this method comprises:
Send downlink signaling to end side, said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing;
The channel condition information of receiving terminal side feedback, said channel condition information comprise the pairing subband CQI of the subband information that the partition of available resources of the E-PDCCH transmission of being disposed becomes.
11. method as claimed in claim 10 is characterized in that, said channel condition information also comprises subband PMI information, and said subband PMI information comprises the subband PMI that calculates based on RI=1.
12. method as claimed in claim 10; It is characterized in that; Said channel condition information also comprises broadband P MI information; Said broadband range is the total bandwidth of available resources of the E-PDCCH transmission of downlink system broadband or configuration, and said subband PMI information comprises the broadband P MI that calculates based on RI=1.
13., it is characterized in that said channel condition information also comprises the RI information that reports like claim 10 or 11 or 12 described methods, the span of said RI information is RI information＜=N, N is a natural number.
14. method as claimed in claim 13 is characterized in that, said channel condition information also comprises PMI information and the subband CQI information of calculating based on the RI that reports, wherein,
Said PMI information is subband PMI information or broadband P MI information; Or said PMI information comprises subband PMI information and broadband P MI information.
15. method as claimed in claim 10 is characterized in that, receives said channel condition information through Physical Uplink Control Channel PUSCH.
16. method as claimed in claim 15 is characterized in that,
Comprise the subdomain that is used to carry subband CQI information among the said PUSCH;
When said channel condition information also comprises subband PMI information, comprise a subdomain that is used to carry subband CQI information and subband PMI information among the said PUSCH; Or comprise a subdomain that is used to carry subband PMI information, and subdomain that is used to carry subband CQI information;
When said channel condition information also comprises RI information and subband PMI information, comprise a subdomain and a subdomain that is used to carry subband PMI information and subband CQI information that is used to carry RI information among the said PUSCH;
When said channel condition information comprises RI information, subband PMI information and broadband P MI information, comprise a subdomain that is used to carry the subdomain of RI information and is used to carry subband PMI information, broadband P MI information and subband CQI information among the said PUSCH.
17. feedback device aperiodic of a channel condition information is characterized in that, comprising:
Receiving element is used to receive downlink signaling, and said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing;
Channel estimating unit is used for the estimated value based on down channel, obtains channel condition information to be feedback, and said channel condition information comprises the pairing subband CQI of the subband information that the partition of available resources of the E-PDCCH transmission of being disposed becomes;
Transmitting element is used for the setting-up time after receiving said downlink signaling, sends said channel condition information to base station side.
18. device as claimed in claim 17 is characterized in that, the available resources of said E-PDCCH transmission of disposing are divided into M subband, and wherein, M is an integer, and M＞=1.
19. device as claimed in claim 18; It is characterized in that; The available resources of said E-PDCCH transmission of disposing comprise M the resource part that frequency domain is continuous, between the continuous resource part of frequency domain frequency domain interval are arranged, and the continuous resource part of each frequency domain is a subband.
20. device as claimed in claim 17 is characterized in that, said channel condition information also comprises subband PMI information, and said subband PMI information comprises the subband PMI that calculates based on RI=1.
21. device as claimed in claim 17; It is characterized in that; Said channel condition information also comprises broadband P MI information; Said broadband range is the total bandwidth of available resources of the E-PDCCH transmission of downlink system broadband or configuration, and said broadband P MI information comprises the broadband P MI that calculates based on RI=1.
22. device as claimed in claim 17 is characterized in that, said channel condition information also comprises RI information, and the span of said RI information is RI information＜=N, and N is a natural number.
23. device as claimed in claim 22 is characterized in that, said channel condition information also comprises PMI information and the subband CQI information of calculating based on the RI that reports, wherein,
Said PMI information is subband PMI information or broadband P MI information; Or said PMI information comprises subband PMI information and broadband P MI information.
24. device as claimed in claim 17 is characterized in that, said transmitting element is used for said channel condition information is sent to base station side through Physical Uplink Control Channel PUSCH.
25. device as claimed in claim 24 is characterized in that,
Comprise the subdomain that is used to carry subband CQI information among the said PUSCH;
When said channel condition information also further comprises subband PMI information, comprise a subdomain that is used to carry subband CQI information and subband PMI information among the said PUSCH; Or comprise a subdomain that is used to carry subband PMI information, and subdomain that is used for carrier belt band CQI information;
When said channel condition information also further comprises RI information and subband PMI information, comprise a subdomain and a subdomain that is used to carry subband PMI information and subband CQI information that is used to carry RI information among the said PUSCH;
When said channel condition information comprises RI information, subband PMI information and broadband P MI information, comprise a subdomain that is used to carry the subdomain of RI information and is used to carry subband PMI information, broadband P MI information and subband CQI information among the said PUSCH.
26. feedback device aperiodic of a scheduling channel state information is characterized in that, comprising:
Scheduling unit is used for sending downlink signaling to end side, and said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing;
Receiving element is used for the channel condition information that the receiving terminal side is fed back, and said channel condition information comprises the pairing subband CQI of the subband information that the partition of available resources of the E-PDCCH transmission that will be disposed becomes.
27. device as claimed in claim 26 is characterized in that, said channel condition information also comprises subband PMI information, and said subband PMI information comprises the PMI that calculates based on RI=1.
28. device as claimed in claim 26; It is characterized in that; Said channel condition information also comprises broadband P MI information; Said broadband range be downlink system broadband or configuration E-PDCCH transmission the total bandwidth of available resources, said broadband P MI information comprises the PMI that calculates based on RI=1.
29. like claim 26 or 27 or 28 described devices, it is characterized in that said channel condition information also comprises RI information, the span of said RI information is RI information＜=N, N is a natural number.
30. device as claimed in claim 27 is characterized in that, said channel condition information also comprises PMI information and the subband CQI information of calculating based on the RI that reports.
31. device as claimed in claim 26 is characterized in that, said receiving element is used for receiving said channel condition information through Physical Uplink Control Channel PUSCH.
32. device as claimed in claim 29 is characterized in that,
Comprise the subdomain that is used to carry subband CQI information among the said PUSCH;
When said channel condition information also further comprises subband PMI information, comprise a subdomain that is used to carry subband CQI information and subband PMI information among the said PUSCH; Or comprise a subdomain that is used to carry subband PMI information, and subdomain that is used to carry subband CQI information;
When said channel condition information also further comprises RI information and subband PMI information, comprise a subdomain and a subdomain that is used to carry subband PMI information and CQI information that is used to carry RI information among the said PUSCH; Or comprise a subdomain that is used to carry RI information, subband PMI information and subband CQI information.
33. reponse system aperiodic of dispatching the scheduling channel state information is characterized in that, comprising:
The base station is used for sending downlink signaling to end side, and said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing; Receiving element is used for the channel condition information that the receiving terminal side is fed back;
The terminal is used to receive downlink signaling, and said downlink signaling is used to trigger feedback aperiodic of the downlink physical control channel E-PDCCH channel transmitted state information of supporting enhancing; Based on the estimated value of down channel, obtain channel condition information to be feedback, said channel condition information comprises the pairing subband CQI of the subband information that the partition of available resources of the E-PDCCH transmission of being disposed becomes; Setting-up time after receiving said downlink signaling sends said channel condition information to base station side.
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