CN101610523B - Method and system for reporting channel information in time-division duplex system - Google Patents
Method and system for reporting channel information in time-division duplex system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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Abstract
The invention provides a method and a system for reporting channel information in a TDD system. The method comprises the following steps: sending an RRC signaling to UE by a base station, and instructing the UE to report configuration of a periodic sub-frame offset position of the channel information in a physical uplink control channel (PUCCH); the RRC signaling comprises: periodically reporting a periodic sub-frame offset position parameter of channel quality information (CQI) of broadband or a pre-coding matrix instruction (PMI) in the PUCCH, periodically reporting a periodic sub-frame offset position parameter of CQI of sub-band or the PMI in the PUCCH, and periodically reporting a periodic sub-frame offset position parameter of a rank instruction (RI) in the PUCCH; the length of the parameter is determined by the structural configuration of a TDD frame; a mode comprises: determining the possibility number of the periodic sub-frame offset position according to the structural configuration of the TDD frame, then, determining the length of the parameter, and reporting the parameter in the PUCCH by the UE according to the configuration. The method and the system can save the signaling expense of the TDD system to allow the information exchange expense of the TDD system to be closer to that of an FDD system and improve the compatibility of two systems.
Description
Technical field
The present invention relates to time division duplex (TDD) systems technology field, relate in particular to the method and system of reporting channel information in a kind of TDD system.
Background technology
Channel information comprises channel quality indication (CQI), pre-coding matrix indication (PMI) and order indication (RI), the base station sends high-level signaling to subscriber equipment (UE), as Radio Resource control (RRC) signaling, the capable physically control channel (PUCCH) of indication UE is gone up the cycle and the cycle subframe deviation post configuration of reporting channel information.UE is according to described cycle subframe deviation post configuration, reporting channel information on PUCCH.
In the prior art, at Frequency Division Duplexing (FDD) (FDD) pattern, each subframe may be used to reporting channel information, and the cycle of reporting channel information is 2ms, 5ms, 10ms, 20ms, 40ms, 80ms and 160ms.At maximum cycle is 40ms or these two kinds of different situations of 160ms, and the base station comprises that in sending to the RRC signaling of UE the system parameters of two groups of different lengths notifies UE reporting channel information.Below introduce respectively:
Referring to table 1, table 1 is under the situation of 40ms for maximum cycle in the prior art, tabulates to the system parameters of the reporting channel information that UE sends in the base station.
| Parameter name | Use bit number | Explanation |
| The indication of the last periodic report CQI of PUCCH form | 1 | Indicate following two kinds of situations: the broadband reports the broadband to report in conjunction with subband |
| The last periodic report of PUCCH broadband | 7 | Periodic report broadband CQI/PMI on PUCCH: zero N p(expression is not or not=2ms, 5ms, 10ms, 20ms, 40ms, OFF |
| Cycle (the N of CQI/PMI p) subframe skew (N OFFSET) position | Report) zero N OFFSETWith N pRelevant, N OFFSET＝0、-1、-2、...、-(N p-1) zero altogether possibility number: 2+5+10+20+40+1=78 | |
| Cycle (the N of the last periodic report subband of PUCCH CQI p) subframe skew (N OFFSET) position | 7 | Periodic report subband CQI on PUCCH: zero N p=2ms, 5ms, 10ms, 20ms, 40ms, OFF (expression does not report) zero N OFFSETWith N pRelevant, N OFFSET＝0、-1、-2、...、-(N p-1) zero altogether possibility number: 2+5+10+20+40+1=78 |
| The cycle subframe deviation post of the last periodic report RI of PUCCH | 9 | Periodic report RI on PUCCH provides cycle information and the subframe skew of RI: zero cycle information: M RI=1,2,5,10,20,40, OFF (expression does not report), the cycle of RI is the M in CQI or CQI/PMI cycle RIDoubly zero subframe skew: depend on maximum cycle (40ms), the subframe that goes up the broadband periodic report with PUCCH is offset (N OFFSET) corresponding relevant.The subframe skew O=0 ,-1 ,-2 of RI ... ,-(N p-1) zero altogether possibility number: 7 * 40=280 |
Table 1
His-and-hers watches 1 are made brief explanation herein: as the row of the 3rd in the table 1, work as N
pDuring=2ms, N
OFFSET=0 ,-1, promptly report the cycle subframe bits of offset of broadband CQI/PMI to be equipped with 2 kinds of possibility situations: to adopt subframe 0,2,4,6 and 8 to report or adopt subframe 1,3,5,7 and 9 to report.Work as N
pDuring=5ms, N
OFFSET=0 ,-1 ,-2 ,-3 ,-4, promptly reporting the cycle subframe bits of offset of broadband CQI/PMI to be equipped with 5 kinds may situation: adopt subframe 0 and 5 to report, adopt subframe 1 and 6 to report, adopt subframe 2 and 7 to report, adopt subframe 3 and 8 to report or adopt subframe 4 and 9 to report.The rest may be inferred, and then possibility number altogether is: 2+5+10+20+40+1=78.78 kinds of minimum binary system parametric representations that can adopt 7bit of possibility situation, therefore " the cycle subframe deviation post parameter of the last periodic report of PUCCH broadband CQI/PMI " length is 7bit.
Referring to table 2, table 2 is under the situation of 160ms for maximum cycle in the prior art, tabulates to the system parameters of the reporting channel information that UE sends in the base station.
| Parameter name | Use bit number | Explanation |
| The indication of the last periodic report CQI of PUCCH form | 1 | Indicate following two kinds of situations: the broadband reports the broadband to report in conjunction with subband |
| Cycle (the N of the last periodic report of PUCCH broadband CQI/PMI p) subframe skew (N OFFSET) position | 9 | Periodic report broadband CQI/PMI on PUCCH: zero N p=2ms, 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, OFF (expression does not report) zero N OFFSETWith N pRelevant, N OFFSET=0 ,-1 ,-2 ... ,-(N p-1) zero altogether possibility number: 2+5+10+20+40+80+160+1=338 |
| The cycle subframe deviation post of the last periodic report RI of PUCCH | 11 | Periodic report RI on PUCCH provides cycle information and the subframe skew of RI: zero cycle information: M RI=1,2,5,10,20,40, OFF (expression does not report), the cycle of RI is the M in CQI or CQI/PMI cycle RIDoubly zero subframe skew: depend on maximum cycle (160ms), the subframe that goes up the broadband periodic report with PUCCH is offset (N OFFSET) corresponding relevant.Subframe skew O=0 ,-1 ,-2 ... ,-(N p-1) zero altogether possibility number: 7 * 160=1120 |
Table 2
The process of base station notice UE reporting channel information is as follows: for example, referring to table 1, the base station sends the RRC signaling to UE, comprise in this RRC signaling that length is " the cycle subframe deviation post of the last periodic report of PUCCH broadband CQI/PMI " parameter of 7bit, indication UE reports broadband CQI/PMI according to the cycle and the position of appointment; UE just can report broadband CQI/PMI according to the cycle and the position of appointment according to this parameter on PUCCH.The situation of other parameter notices UE reporting channel information similarly.
At tdd mode, owing to be not that each subframe may be used to reporting channel information, there are 5ms, 10ms, 20ms, 40ms, 80ms and 160ms in the cycle of the reporting channel information of making at present.At maximum cycle is 40ms or these two kinds of different situations of 160ms, and system adopts the system parameters of above-mentioned table 1 and table 2 to notify UE reporting channel information respectively.Because the possible situation of the cycle of reporting channel information and position configuration will be less than the possible situation in the fdd mode in the tdd mode, required system parameters length is shorter than the system parameters length under the fdd mode, therefore, the system parameters of employing table 1 and table 2 can cause the waste of TDD system signaling expense.
Summary of the invention
The embodiment of the invention proposes the method for reporting channel information in a kind of TDD system, and this method can be saved the signaling consumption of TDD system.
The embodiment of the invention is put forward the system that also goes out reporting channel information in a kind of TDD system, and this system can save the signaling consumption of TDD system.
Technical scheme of the present invention is achieved in that
The method of reporting channel information in a kind of TDD system comprises:
The base station sends the RRC signaling to UE, the cycle of indication UE reporting channel information on PUCCH and cycle subframe deviation post configuration;
Described RRC signaling comprises: the cycle subframe deviation post parameter of cycle subframe deviation post parameter, PUCCH last periodic report subband CQI or the PMI of the last periodic report of PUCCH broadband CQI or PMI and PUCCH go up the cycle subframe deviation post parameter of periodic report RI; The length of described three parameters determines that by the tdd frame structural arrangements described definite mode is: determine the possibility number that the cycle subframe off normal of reporting channel information is put according to the tdd frame structural arrangements, determine the length of described parameter according to this possibility number;
UE is according to described cycle subframe deviation post configuration, reporting channel information on PUCCH;
The system of reporting channel information in a kind of TDD system comprises:
The base station is used for sending the RRC signaling to UE, the cycle of indication UE reporting channel information on PUCCH and cycle subframe deviation post configuration;
Described RRC signaling comprises: the cycle subframe deviation post parameter of cycle subframe deviation post parameter, PUCCH last periodic report subband CQI or the PMI of the last periodic report of PUCCH broadband CQI or PMI and PUCCH go up the cycle subframe deviation post parameter of periodic report RI; The length of described three parameters determines that by the tdd frame structural arrangements described definite mode is: determine the possibility number that the cycle subframe off normal of reporting channel information is put according to the tdd frame structural arrangements, determine the length of described parameter according to this possibility number;
UE is used for according to described cycle subframe deviation post configuration, reporting channel information on PUCCH.
As seen, the method and system that the embodiment of the invention proposes, at the TDD system, when the base station sent the system parameters of reporting channel information to UE, the length of employed parameter was shorter than parameter length of the prior art, therefore can save the signaling consumption of TDD system.
Embodiment
Preamble is mentioned, and there are 5ms, 10ms, 20ms, 40ms, 80ms and 160ms in the cycle of making the tdd mode reporting channel information at present, and the position configuration when various cycle clearly is described below is at first introduced the frame structure of tdd mode.Referring to table 3, table 3 is the frame structure tabulation of the different Configuration Types of tdd mode in the prior art, and wherein, " D " represents descending sub frame, and " S " represents special subframe, and " U " represents sub-frame of uplink.
Table 3
According to table 3 as seen, the cycle of reporting channel information has 3 kinds of possible situations at most when being 5ms, promptly selects subframe 2 and 7, subframe 3 and 8 or subframe 4 and 9 reporting channel informations; The cycle of reporting channel information has 6 kinds of possible situations at most when being 10ms, promptly selects subframe 2,3,4,7,8 or 9 reporting channel informations; The cycle of reporting channel information has 12 kinds of possible situations (can regard as from the frame of 2 10ms and select) at most when being 20ms; The cycle of reporting channel information has 24 kinds of possible situations (can regard as from the frame of 4 10ms and select) at most when being 40ms; The cycle of reporting channel information has 48 kinds of possible situations (can regard as from the frame of 8 10ms and select) at most when being 80ms; The cycle of reporting channel information has 96 kinds of possible situations (can regard as from the frame of 16 10ms and select) at most when being 160ms.
As seen, for tdd mode, the cycle subframe deviation post configuring condition of reporting channel information lacks than the possible situation of fdd mode, for with the existing system compatibility, can still above-mentioned table 1 and table 2 in parameter as the system parameters of reporting channel information, but can reduce the length of used parameter, the length of parameter is determined according to the sub-frame of uplink configuration of tdd frame structure.
The method of reporting channel information comprises in the TDD system that the embodiment of the invention proposes:
The base station sends the RRC signaling to UE, the cycle of indication UE reporting channel information on PUCCH and cycle subframe deviation post configuration; UE is according to described cycle subframe deviation post configuration, reporting channel information on PUCCH;
Described RRC signaling comprises: the cycle subframe deviation post parameter of cycle subframe deviation post parameter, PUCCH last periodic report subband CQI or the PMI of the last periodic report of PUCCH broadband CQI or PMI and PUCCH go up the cycle subframe deviation post parameter of periodic report RI; The length of described three parameters determines that by the tdd frame structural arrangements described definite mode is: determine the possibility number that the cycle subframe off normal of reporting channel information is put according to the tdd frame structural arrangements, determine the length of described parameter according to this possibility number.
Below lift specific embodiment:
Embodiment one:
Referring to table 4, table 4 is under the situation of 40ms for the embodiment of the invention one maximum cycle, tabulates to the system parameters of the reporting channel information that UE sends in the base station.
| Parameter name | Use bit number | Explanation |
| The last periodic report CQI of PUCCH form | 1 | Indicate following two kinds of situations: the broadband reports |
| Indication | The broadband reports in conjunction with subband | |
| Cycle (the N of the last periodic report of PUCCH broadband CQI/PMI p) subframe skew (N OFFSET) position | 6 | Periodic report broadband CQI/PMI on PUCCH: zero N p=5ms, 10ms, 20ms, 40ms, OFF (expression does not report) zero N OFFSETWith N pRelevant zero altogether possibility number: 3+6+12+24+1=46 |
| Cycle (the N of the last periodic report subband of PUCCH CQI p) subframe skew (N OFFSET) position | 6 | Periodic report subband CQI on PUCCH: zero N p=5ms, 10ms, 20ms, 40ms, OFF (expression does not report) zero N OFFSETWith N pRelevant zero altogether possibility number: 3+6+12+24+1=46 |
| The cycle subframe deviation post of the last periodic report RI of PUCCH | 8 | Periodic report RI on PUCCH provides cycle information and the subframe skew of RI: zero cycle information: M RI=1,2,5,10,20,40, OFF (expression does not report), the cycle of RI is the M in CQI or CQI/PMI cycle RIDoubly zero subframe skew: depend on maximum cycle (40ms), the subframe that goes up the broadband periodic report with PUCCH is offset (N OFFSET) corresponding relevant.Zero altogether possibility number: 7 * 24=168 |
Table 4
By last table 4 as seen, at tdd mode, at maximum cycle is under the situation of 40ms, reports the cycle subframe deviation post of broadband CQI/PMI to have 46 kinds of situations, so the length of " the cycle subframe deviation post of the last periodic report of PUCCH broadband CQI/PMI " parameter can be reduced to 6bit; The length of " the cycle subframe deviation post of the last periodic report subband of PUCCH CQI " parameter report the cycle subframe deviation post of subband CQI/PMI to have 46 kinds of situations, so can be reduced to 6bit; The length of " the cycle subframe deviation post of the last periodic report RI of PUCCH " parameter report the cycle subframe deviation post of RI to have 168 kinds of situations, so can be reduced to 8bit.
Embodiment two:
Referring to table 5, table 5 is under the situation of 160ms for the embodiment of the invention two maximum cycles, tabulates to the system parameters of the reporting channel information that UE sends in the base station.
| Parameter name | Use bit number | Explanation |
| The indication of the last periodic report CQI of PUCCH form | 1 | Indicate following two kinds of situations: the broadband reports the broadband to report in conjunction with subband |
| Cycle (the N of the last broadband of PUCCH periodic report CQI/PMI p) subframe skew (N OFFSET) position | 8 | Periodic report broadband CQI/PMI on PUCCH: zero N p=1ms, 2ms, 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, OFF (expression does not report) zero N OFFSETWith N pRelevant zero altogether possibility number: 3+6+12+24+48+96+1=190 |
| The cycle subframe deviation post of the last periodic report RI of PUCCH | 10 | Periodic report RI on PUCCH provides cycle information and the subframe skew of RI: zero cycle information: M RI=1,2,5,10,20,40, OFF (expression does not report), the cycle of RI is the M in CQI or CQI/PMI cycle RIDoubly zero subframe skew: depend on maximum cycle (160ms), the subframe that goes up the broadband periodic report with PUCCH is offset (N OFFSET) corresponding relevant.Zero altogether possibility number: 7 * 96=672 |
Table 5
By last table 5 as seen, at tdd mode, at maximum cycle is under the situation of 160ms, and the bit number of " the cycle subframe deviation post of the last periodic report of PUCCH broadband CQI/PMI " parameter and " the cycle subframe deviation post of the last periodic report RI of PUCCH " parameter can be reduced to 8bit and 10bit respectively.
In addition, the minimum period of the reporting channel information of tdd mode is 5ms in the prior art, and the embodiment of the invention also proposes the configuring condition that report cycle is 1ms and 2ms, and is specific as follows:
(1) cycle of tdd mode reporting channel information is 2ms, its implication is: in the previous field of each frame, selects 2 sub-frame of uplink reporting channel informations or in 2 fields in the front and back of each frame, selects 2 sub-frame of uplink reporting channel informations respectively, specifically:
(1), in 2 fields in front and back, select 2 subframes to be used for reporting channel information respectively for tdd frame structural arrangements type 0,1 and 6;
(2), in previous field, select 2 subframes to be used for reporting channel information for tdd frame structural arrangements type 3 and 4;
(3) for tdd frame structural arrangements type 2 and 5, can't accomplish reporting of 2ms cycle, ignore this kind situation.
As shown in table 6, table 6 is an employed sub-frame of uplink tabulation example when the cycle of reporting channel information being 2ms.
Table 6
By table 6 as seen, for tdd frame structural arrangements type 0,1 and 6, can select subframe 2,3,7 and 8 reporting channel informations; For tdd frame structural arrangements type 3 and 4, can select subframe 2 and 3 reporting channel informations.
For tdd frame structural arrangements type 0, can also select subframe 2,4,7 and 9 or select subframe 3,4,8 and 9 reporting channel informations; For tdd frame structural arrangements type 3, can also select subframe 2 and 4 or select subframe 3 and 4 reporting channel informations.As seen, when the cycle of reporting channel information was 2ms, the cycle of CQI/PMI and position configuration had 3 kinds of possible situations at most.
(2) cycle of tdd mode reporting channel information is 1ms, and its implication is: in a frame, each sub-frame of uplink all is used for reporting channel information, specifically:
(1), select each sub-frame of uplink to be used for reporting channel information for tdd frame structural arrangements type 0,3 and 6.
(2) for other tdd frame structural arrangements type,, therefore ignore this kind situation owing to identical with the position of other report cycles.
As shown in table 7, table 7 is employed sub-frame of uplink tabulation when the cycle of reporting channel information being 1ms.
Table 7
By table 7 as seen, for tdd frame structural arrangements type 0,3 and 6, all can select all sub-frame of uplink reporting channel informations.When the cycle of reporting channel information was 1ms, the cycle of reporting channel information and position configuration had only a kind of top possible situation.
When the report cycle that increases the present invention's proposition is 1ms and 2ms configuration, still can adopt the system parameters in the foregoing description table 4 and the table 5.For instance, as " cycle of the last periodic report of PUCCH broadband CQI/PMI and the subframe skew " parameter in the table 4, because having increased the cycle is the configuration of 1ms and 2ms, the number of possibility altogether of periodic report broadband CQI/PMI is on PUCCH: 46+1+3=50, still can adopt all possible situation of parametric representation of 6bit length.The situation of other parameters similarly, parameter length is all enough represented all situations, does not repeat them here.
Thus, in the method that the present invention proposes, described cycle and position configuration can comprise: the cycle is 2ms, and the position is: in tdd frame structural arrangements type 0,1 or 6, and 2 sub-frame of uplink in the previous field and 2 sub-frame of uplink of the correspondence position in the back field; Perhaps in tdd frame structural arrangements type 3 or 4,2 sub-frame of uplink in the previous field;
Perhaps, the cycle is 1ms, and the position is: all sub-frame of uplink in tdd frame structural arrangements type 0,3 or 6.
The embodiment of the invention also proposes the system of reporting channel information in a kind of TDD system, comprising:
The base station is used for sending the RRC signaling to UE, the cycle of indication UE reporting channel information on PUCCH and cycle subframe deviation post configuration;
Described RRC signaling comprises: the cycle subframe deviation post parameter of cycle subframe deviation post parameter, PUCCH last periodic report subband CQI or the PMI of the last periodic report of PUCCH broadband CQI or PMI and PUCCH go up the cycle subframe deviation post parameter of periodic report RI; The length of described three parameters determines that by the tdd frame structural arrangements described definite mode is: determine the possibility number that the cycle subframe off normal of reporting channel information is put according to the tdd frame structural arrangements, determine the length of described parameter according to this possibility number;
UE is used for according to described cycle subframe deviation post configuration, reporting channel information on PUCCH.
In the said system, when the maximum cycle of reporting channel information was 40 milliseconds, the length of the cycle subframe deviation post parameter of the last periodic report of PUCCH broadband CQI or PMI was 6 bits; The length of the cycle subframe deviation post parameter of PUCCH last periodic report subband CQI or PMI is 6 bits; The length of the cycle subframe deviation post parameter of the last periodic report RI of PUCCH is 8 bits.
When the maximum cycle of reporting channel information was 160 milliseconds, the length of the cycle subframe deviation post parameter of the last periodic report of PUCCH broadband CQI or PMI was 8 bits; The length of the cycle subframe deviation post parameter of the last periodic report RI of PUCCH is 10 bits.
In the said system, described cycle and position configuration can comprise: the cycle is 2 milliseconds, and the position is: in tdd frame structural arrangements type 0,1 or 6, and 2 sub-frame of uplink of correspondence position in 2 sub-frame of uplink in the previous field and the back field; Perhaps in tdd frame structural arrangements type 3 or 4,2 sub-frame of uplink in the previous field.
Cycle and position configuration can also comprise: the cycle is 1ms, and the position is: all sub-frame of uplink in tdd frame structural arrangements type 0,3 or 6.
As seen, the method and system that the present invention proposes, at the cycle of reporting channel information in the TDD system and the few characteristics of possible situation of position, in the base station when UE sends the system parameters of reporting channel information, use the short system parameters of length, therefore can save the signaling consumption of TDD system, make in the TDD system handover information expense, thereby improve the compatibility of two kinds of systems more near the FDD system.In addition, the embodiment of the invention also the proposition cycle be the channel information position configuration situation of 1ms and 2ms, make that the minimum period of reporting channel information can reach 1ms in the TDD system, can improve the performance of TDD system.
Claims (10)
1. the method for reporting channel information in the TDD system is characterized in that described method comprises:
The base station sends the radio resource control RRC signaling to user equipment (UE), and the capable physically control channel PUCCH of indication UE goes up the cycle and the cycle subframe deviation post configuration of reporting channel information;
Described RRC signaling comprises: the cycle subframe deviation post parameter that the cycle subframe deviation post parameter of cycle subframe deviation post parameter, PUCCH last periodic report subband CQI or the PMI of the last periodic report broad-band channel of PUCCH quality information CQI or pre-coding matrix indication PMI and PUCCH go up periodic report order indication RI; The length of described three parameters determines that by the tdd frame structural arrangements described definite mode is: determine the possibility number of the cycle subframe deviation post of reporting channel information according to the tdd frame structural arrangements, determine the length of described parameter according to this possibility number;
UE is according to described cycle subframe deviation post configuration, reporting channel information on PUCCH.
2. method according to claim 1 is characterized in that, when the maximum cycle of reporting channel information was 40 milliseconds, the length that described PUCCH goes up the cycle subframe deviation post parameter of periodic report broadband CQI or PMI was 6 bits; The length that described PUCCH goes up the cycle subframe deviation post parameter of periodic report subband CQI or PMI is 6 bits; The length that described PUCCH goes up the cycle subframe deviation post parameter of periodic report RI is 8 bits.
3. method according to claim 1 is characterized in that, when the maximum cycle of reporting channel information was 160 milliseconds, the length that described PUCCH goes up the cycle subframe deviation post parameter of periodic report broadband CQI or PMI was 8 bits; The length that described PUCCH goes up the cycle subframe deviation post parameter of periodic report RI is 10 bits.
4. method according to claim 1, it is characterized in that, described cycle subframe deviation post configuration comprises: the cycle is 2 milliseconds, the position is: in tdd frame structural arrangements type 0,1 or 6, and 2 sub-frame of uplink of correspondence position in 2 sub-frame of uplink in the previous field and the back field; Perhaps in tdd frame structural arrangements type 3 or 4,2 sub-frame of uplink in the previous field.
5. method according to claim 1 is characterized in that, described cycle subframe deviation post configuration comprises: the cycle is 1 millisecond, and the position is: all sub-frame of uplink in tdd frame structural arrangements type 0,3 or 6.
6. the system of reporting channel information in the TDD system is characterized in that described system comprises:
The base station is used for sending the RRC signaling to UE, the cycle of indication UE reporting channel information on PUCCH and cycle subframe deviation post configuration;
Described RRC signaling comprises: the cycle subframe deviation post parameter of cycle subframe deviation post parameter, PUCCH last periodic report subband CQI or the PMI of the last periodic report of PUCCH broadband CQI or PMI and PUCCH go up the cycle subframe deviation post parameter of periodic report order indication RI; The length of described three parameters determines that by the tdd frame structural arrangements described definite mode is: determine the possibility number that the cycle subframe off normal of reporting channel information is put according to the tdd frame structural arrangements, determine the length of described parameter according to this possibility number;
UE is used for according to described cycle subframe deviation post configuration, reporting channel information on PUCCH.
7. system according to claim 6 is characterized in that, when the maximum cycle of reporting channel information was 40 milliseconds, the length that described PUCCH goes up the cycle subframe deviation post parameter of periodic report broadband CQI or PMI was 6 bits; The length that described PUCCH goes up the cycle subframe deviation post parameter of periodic report subband CQI or PMI is 6 bits; The length that described PUCCH goes up the cycle subframe deviation post parameter of periodic report RI is 8 bits.
8. system according to claim 6 is characterized in that, when the maximum cycle of reporting channel information was 160 milliseconds, the length that described PUCCH goes up the cycle subframe deviation post parameter of periodic report broadband CQI or PMI was 8 bits; The length that described PUCCH goes up the cycle subframe deviation post parameter of periodic report RI is 10 bits.
9. system according to claim 6, it is characterized in that, described cycle subframe deviation post configuration comprises: the cycle is 2 milliseconds, the position is: in tdd frame structural arrangements type 0,1 or 6, and 2 sub-frame of uplink of correspondence position in 2 sub-frame of uplink in the previous field and the back field; Perhaps in tdd frame structural arrangements type 3 or 4,2 sub-frame of uplink in the previous field.
10. system according to claim 6 is characterized in that, described cycle subframe deviation post configuration comprises: the cycle is 1 millisecond, and the position is: all sub-frame of uplink in tdd frame structural arrangements type 0,3 or 6.
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| PCT/CN2009/072203 WO2009152737A1 (en) | 2008-06-20 | 2009-06-10 | Method and system of reporting channel information in time division duplex system |
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