CN102468927A - Method, equipment and system for reporting signal channel state - Google Patents
Method, equipment and system for reporting signal channel state Download PDFInfo
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- CN102468927A CN102468927A CN2010105440387A CN201010544038A CN102468927A CN 102468927 A CN102468927 A CN 102468927A CN 2010105440387 A CN2010105440387 A CN 2010105440387A CN 201010544038 A CN201010544038 A CN 201010544038A CN 102468927 A CN102468927 A CN 102468927A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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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
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Abstract
The invention discloses a method, equipment and a system for reporting the signal channel state. The method comprises the following steps that: user equipment (UE) receives feedback period information sent by a first base station, and the feedback period information is used for indicating the period N of the signal channel state of a first type sub frame reported by the UE; the UE measures the signal channel state of the first type sub frame; and the UE reports the measured signal channel state to the first base station according to the period N, wherein the first type sub frame is the sub frame in the first base station with the same time as a second specific sub frame, the second specific sub frame is the sub frame only sending partial signal channels among all signal channels, the sub frame position of the second specific sub frame is configured by a second base station, and the second base station is an interference base station of the first base station. The method has the advantage that the first base station can realize the effective dispatching on the UE.
Description
Technical field
The present invention relates to moving communicating field, particularly relate to a kind of method, equipment and system of reporting channel state.
Background technology
Heterogeneous network is meant that (Low power node LPN) is placed in the macro base station coverage area by cloth low power nodes, forms the heterogeneous system with the different node types that cover.Possibly there is the phase mutual interference between each node in the heterogeneous network.For example; The transmitting power of macro base station is bigger; Therefore but the downstream signal interfere of the macro base station user that is in the marginal position in the LPN coverage receives the downstream signal of LPN, and interference also possibly caused near LPN in the high-power terminal that is in the marginal position in the macro base station coverage.And for example, under the scene of CSG (Closed Subscriber Group), but Home eNodeB also near the user the interfere receive the downstream signal of macro base station.
At present, (Almost Blank Subframe, ABS) possibility of subframe is suggested in vain in the sub-district of interference base station control, to dispose near-space.Wherein, and a permission transmission cell specific reference signal in the ABS subframe (Cell-specific reference signal, CRS); Or CRS and channel state information reference signals (channel state information reference signal; CSI-RS), or CRS and CSI-RS and necessary CCCH, or CRS and necessary CCCH; The signal that makes interference base station in the ABS subframe, send so obviously reduces, thereby reduces the influence that other nodes are caused.
In realizing process of the present invention; The inventor finds: the interference that other nodes that disturbed receive on each self-corresponding subframe position of common subframe of interference base station ABS subframe and non-ABS is different; The quality of down channel is also different; But also there are not other nodes can utilize the ABS configuration mechanism of interference base station to come subscriber equipment (User Equipment, the prior art of UE) effectively dispatching at present to being disturbed.
Summary of the invention
One side of the present invention provides a kind of method of reporting channel state, comprising:
UE receives the feedback cycle information that send first base station, the cycle N of the channel status that said feedback cycle information is used to indicate UE to report first kind subframe;
Said UE measures the channel status of said first kind subframe;
Said UE reports said first base station according to said cycle N with the channel status that measures;
Wherein, Said first kind subframe is to go up identical subframe with the second specific sub-frame time in first base station; Said second specific sub-frame is the subframe of only sending local channel in all channels; The subframe position of said second specific sub-frame is by second base station configuration, and said second base station is the interference base station of first base station.
Another aspect of the present invention provides a kind of method of receive channel state, comprising:
First base station sends to user equipment (UE) with feedback cycle information, the cycle N of the channel status that said feedback cycle information is used to indicate UE to report first kind subframe;
Said first base station receives the channel status of the first kind subframe that said UE reports according to said cycle N;
Wherein, Said first kind subframe is to go up identical subframe with the second specific sub-frame time in first base station; Said second specific sub-frame is the subframe of only sending local channel in all channels; The subframe position of said second specific sub-frame is by second base station configuration, and said second base station is the interference base station of first base station.
Another aspect of the present invention provides a kind of terminal, and this terminal comprises Transmit-Receive Unit and processing unit; Wherein, Transmit-Receive Unit is used to receive the feedback cycle information that send first base station; And according to said cycle N the channel status that measures is reported said first base station, the cycle N of the channel status that said feedback cycle information is used to indicate UE to report first kind subframe; Processing unit is used to measure the channel status of said first kind subframe; Wherein, Said first kind subframe is to go up identical subframe with the second specific sub-frame time in first base station; Said second specific sub-frame is the subframe of only sending local channel in all channels; The subframe position of said second specific sub-frame is by second base station configuration, and said second base station is the interference base station of first base station.
Another aspect of the present invention provides a kind of network equipment, and this network equipment comprises transmitting element and receiving element; Wherein, transmitting element is used for feedback cycle information is sent to UE, the cycle N of the channel status that said feedback cycle information is used to indicate UE to report first kind subframe; Receiving element is used to receive the channel status of the first kind subframe that said UE reports according to said cycle N; Wherein, Said first kind subframe is to go up identical subframe with the second specific sub-frame time in first base station; Said second specific sub-frame is the subframe of only sending local channel in all channels; The subframe position of said second specific sub-frame is by second base station configuration, and said second base station is the interference base station of first base station.
Another aspect of the present invention provides a kind of system, and this system comprises first base station and user equipment (UE); Wherein, the cycle N of the channel status that first base station is used to notify UE to report first kind subframe, UE is used to measure the channel status of first kind subframe, and according to said cycle N the channel status that measures is reported first base station; Wherein, Said first kind subframe is to go up identical subframe with the second specific sub-frame time in first base station; Said second specific sub-frame is the subframe of only sending local channel in all channels; The subframe position of said second specific sub-frame is by second base station configuration, and said second base station is the interference base station of first base station.
Use method, equipment and system that the embodiment of the invention provides; First base station can be that UE effectively dispatches according to the channel status that receives; For example; If the channel quality of first kind subframe is better, then can fully dispatch the communication quality that UE improves UE in the subframe position of follow-up first kind subframe.
Description of drawings
The subframe position sketch map of the measured channel state that Fig. 1 provides for one embodiment of the present of invention;
The subframe position sketch map of the measured channel state that Fig. 2 provides for an alternative embodiment of the invention;
The method flow diagram that Fig. 3 provides for an alternative embodiment of the invention;
The method flow diagram that Fig. 4 provides for an alternative embodiment of the invention;
The terminal sketch map that Fig. 5 provides for an alternative embodiment of the invention;
The network equipment sketch map that Fig. 6 provides for an alternative embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
One embodiment of the present of invention provide a kind of system, and this system comprises first base station and UE.First base station notice UE reports cycle (the being designated hereinafter simply as report cycle) N of the channel status of first kind subframe, and UE is behind the channel status of measuring first kind subframe, and N reports first base station with the channel status that measures according to this cycle.Wherein, channel status is the down channel state.UE reports first base station through the transmitting channel state information with the channel status that measures, the channel status that this channel condition information indication measurement arrives.
First kind subframe in the present embodiment is first base station, the second specific sub-frame time that neutralized to go up identical subframe; Just the subframe position of first kind subframe belongs to the set of the subframe position composition of second specific sub-frame, i.e. the subframe position of first kind subframe set can be the complete or collected works or the subclass of the subframe position set of second specific sub-frame.First kind subframe need not to limit subframe type, and promptly first kind subframe can be the common subframe of non-ABS type.Above-mentioned second specific sub-frame is the subframe that only allows to send local channel in all channels, by second base station configuration.Above-mentioned second specific sub-frame can be used for reducing to be disturbed other nodes, for example is the subframe of ABS type.
Second base station in the present embodiment is the interference base station of first base station, and promptly the downstream signal of second base station receives the downstream signal that sends first base station to the UE of first base station services and causes interference (for example the signal annoyance level is greater than preset value).For example, first base station is LPN, and second base station is a macro base station.And for example, first base station is a macro base station, and second base station is a Home eNodeB.
In the present embodiment, first base station is sent feedback cycle information and is given UE, and this feedback cycle information is used to indicate the report cycle N of UE.
For example, the report cycle N of UE is identical with the transmission cycle N2 of second specific sub-frame of second base station configuration, perhaps is the integral multiple of N2.And for example, if the cycle of second specific sub-frame is 4 milliseconds (ms), 8ms, 16ms, perhaps 20ms, then first base station can be configured to 4ms respectively with N1,8ms, 16ms, perhaps 20ms, and notice UE.Optional, in the present embodiment first base station can be earlier from second base station or other equipment obtain the transmission cycle N2 of second specific sub-frame, the report cycle N with UE is configured to the cycle identical with N2 then, perhaps is the integral multiple of N2, and notice UE.
In the present embodiment, after UE gets access to report cycle N, can with a fixing sub-frame (like in subframe 0 to the subframe 9 any) at a distance of the position of side-play amount offset the subframe position as the reporting channel state.Wherein, side-play amount offset possibly made an appointment by the UE and first base station, or the default value of being preserved by UE, or receive from first base station by UE.Optional, this side-play amount is the arbitrary integer in 0 to the N-1 interval.
In the present embodiment, parameter I can be sent in first base station
CSIGive UE, this I
CSIHave mapping relations with cycle N and side-play amount offset.Accordingly, UE can be according to the parameter I of obtaining or preserve
CSIWith the mapping relations of N, offset, and the parameter I that receives
CSIConfirm N and offset.
For example, table 1 provides the parameter I of a kind of FDD of being applicable to system
CSIMapping relations with N, offset.Wherein, offset is illustrated in the deviant of the subframe position of reporting channel state in each cycle N with respect to subframe 0, and the value that therefore should squint is identical with the index of this subframe.With table 1 is example, concerning first base station, can be { 2,5,10,20 for the cycle N value of a UE configuration; 40,80,160,32,64,128; 4,8, any among the 16} (cycle unit is ms) or OFF, in each cycle N1 the value of offset be 0 ..., any among the N-1}.
Table 1
The subframe position of supposing UE reporting channel state is n.Optional; The subframe position of first kind subframe (being the subframe that UE need measure) can be n-x; Wherein x is made an appointment by the UE and first base station; Or preserve by UE, the value of x can be so that the time of UE first kind subframe to be measured be identical with the time of some second specific sub-frame of second base station configuration, and for example the x value is 4ms.Optional, UE receives the subframe position (being the subframe that UE need measure) of first kind subframe.For example, first base station sends to UE with the set of the subframe position of second specific sub-frame, i.e. the set of the subframe position of the first kind subframe that receives of UE is gathered identical with the subframe position of second specific sub-frame.And for example, a part of subframe position is selected in second base station from the subframe position set of second specific sub-frame of configuration, and the set of this part subframe position is sent to first base station, sends to UE by first base station then.And for example, the set of the subframe position of second specific sub-frame that second base station will dispose sends to first base station, from the subframe position set of second specific sub-frame, select a part of subframe position by first base station, and this part subframe position that will select sends to UE.It is thus clear that the set of the subframe position of the first kind subframe that UE receives possibly be the subclass of the subframe position set of second specific sub-frame.
Optional, UE confirms the subframe position with reference to subframe according to the subframe position of reporting channel state, for example, will confirm as n-n with reference to the subframe position of subframe
Ref1Wherein, n
Ref1For subframe position with reference to subframe is belonged in the value of location sets of first kind subframe, more than or equal to the minimum value of parameter U, for example this parameter U can be 4.
Optional, if UE receives the n that send first base station
Ref2, perhaps this n makes an appointment the UE and first base station
Ref2, then UE also can be according to the subframe position and this n of reporting channel state
Ref2Confirm the subframe position of first kind subframe, for example the subframe position of first kind subframe is n-n
Ref2-m*N, wherein, m is an integer.Further, UE can also be with n-n
Ref2The subframe position of subframe also is that n is passed through in first base station as a reference
Ref2To the subframe position of UE indication reporting channel state with respect to skew with reference to the subframe position of subframe.
In the present embodiment; The channel status that UE reports possibly be the channel status mean value that the one or many of UE before subframe position n measured first kind subframe; That is to say; The channel condition information that UE sends to first base station possibly indicated the channel status of UE one-shot measurement gained, also possibly indicate UE to measure the channel status mean value of gained for many times.Wherein, if the channel status of the first kind subframe that UE measures satisfies first Rule of judgment, then channel condition information is got the value that satisfies the maximum of first Rule of judgment in 1 to K (K is the quantity that the channel condition information indicated value of definition is arranged); Otherwise channel condition information is taken as 0.Wherein, First Rule of judgment comprises: if Physical Downlink Shared Channel (the Physical Downlink SharedChannel that the modulation system of channel condition information indication and transmission block size are confirmed; PDSCH) data transmission block on transmits on the subframe position with reference to subframe, and the mistake piece probability of this data transmission block is less than preset thresholding.Further, UE gives first base station in subframe position n transmitting channel state information.
In the system that present embodiment provides, UE can measure first kind subframe, and reports the corresponding channel status of first kind subframe to give first base station.Because the subframe position of first kind subframe is identical with the subframe position of second specific sub-frame; Therefore first base station can be that UE effectively dispatches according to the channel status that receives; For example; If the channel quality of first kind subframe is better, then can fully dispatch the communication quality that UE improves UE in the subframe position of follow-up first kind subframe.In addition, the information that first base station sends to UE in the present embodiment can be carried in a piece of news to reduce signaling consumption, also can in different messages, carry to increase the communication flexibility ratio.
During one of the method that in the FDD system, using the embodiment of the invention provides is given an example; The ABS transmission cycle of macro base station configuration is 8ms; Subframe 0, subframe 8, subframe 16 etc. are the ABS subframe; Other subframes except that subframe position is 8*m (m is an integer) can right and wrong ABS type common subframe, macro base station can normally send signal in common subframe and not receive the restriction of channel type.Referring to Fig. 1, it is 8*m that UE1 and UE2 need the subframe position of measured channel state.The cycle of UE1 and UE2 reporting channel state is identical with the ABS of second base station configuration transmission cycle, is 8ms.The subframe position of UE1 reporting channel state is 8*m+4 (offset that is UE1 is 4), and the subframe position of UE2 reporting channel state is 8*m+5 (offset that is UE1 is 5).Referring to Fig. 2, it is 16*m that UE3 and UE4 need the subframe position of measured channel state.The cycle of UE3 and UE4 reporting channel state is 2 times that the ABS of second base station configuration sends the cycle, is 16ms.The subframe position of UE3 reporting channel state is 16*m+4 (offset that is UE3 is 4), and the subframe position of UE4 reporting channel state is 16*m+2 (offset that is UE4 is 2).
An alternative embodiment of the invention provides a kind of method of reporting channel state, and this embodiment is that the interference base station of LPN is an example with the macro base station, and the process of the UE reporting channel state of LPN service is described.Wherein, suppose that the ABS transmission cycle of macro base station configuration is 8ms, subframe 0, subframe 8, subframe 16 etc. are the ABS subframe.As shown in Figure 3, this embodiment comprises the steps.
S310, UE confirm to report the subframe position n11 of the channel status of first kind subframe.
Optional, UE obtains the cycle N11 that UE reports the channel status of first kind subframe.For example, UE receives the feedback cycle information that LNP sends, and this feedback cycle information is used to indicate UE to report the cycle of the channel status of first kind subframe, i.e. report cycle N11.Owing to possibly have side-play amount offset between the subframe position f of n11 with respect to a fixing sub-frame, this side-play amount can be made an appointment by UE and LPN and perhaps preserved default value by UE, also can send to UE by LPN.Therefore, possibly also comprise offset information in the message that comprises N11 that UE receives, perhaps, UE also received the message that comprises offset information before or after receiving the message that comprises N11.As offset during for the fixed value of acquiescence, LPN also can not send offset and give UE, and for example can to give tacit consent to offset be 0 to UE.
Further, UE can confirm n11=f+offset, and UE reports the subframe position of the channel condition information of first kind subframe in the continuous cycle be n11=f+offset+p*N11, and wherein, p is an integer.With the UE1 among Fig. 1 is example, and f is 0, and offset is 4, the subframe position of UE1 reporting channel state be 4,12,20...}.
Optional, UE receives the parameter I that send first base station
CSI, then UE can be according to I
CSIWith the mapping relations of cycle N11, offset, confirm cycle N11 and offset, thereby confirm to report the subframe position n11 of the channel status of first kind subframe.About I
CSIWith the explanation of the mapping relations of cycle N11, offset and for example, can repeat no more referring to preamble embodiment here.
S320, UE confirm the subframe position of subframe to be measured (being first kind subframe).
Optional, if UE gets access to the subframe position of one or more first kind subframes from LPN, then the UE subframe position that will receive first kind subframe is confirmed as the subframe position of subframe to be measured.UE1 with Fig. 1 is an example, and the location sets of subframe position that LPN sends to the first kind subframe of UE1 is { 0,8; 16,32 ... }; Then UE1 can report channel status one time in each cycle (for 8ms), before each reporting channel state, can measure a sub-frame; Be respectively to measure in cycle of first 8ms in the cycle of measuring 8, the three 8ms of subframe in cycle of 0, the second 8ms of subframe to measure subframe 16 grades by that analogy.UE3 with Fig. 2 is an example, and the location sets of subframe position that LPN sends to the first kind subframe of UE3 is { 0,8; 16,32 ... }; Then UE3 can report channel status one time in each cycle (for 16ms), before reporting channel status at every turn, has one-shot measurement or repeatedly measures.For example; Measure subframe 0 in the cycle of first 16ms; Measure subframe 32 grades by that analogy in the cycle of 16, the three 16ms of measurement subframe in the cycle of second 16ms, corresponding; UE3 the 3rd 16ms report channel condition information; Possibly indicate subframe (being subframe 32) that UE3 measures in this 16ms to measure the channel status of gained, also possibly indicate the mean value of the channel status of subframe (being subframe 32) the measurement gained of measuring in subframe (being subframe 16) that UE3 measures and this 16ms in previous 16ms, also possibly indicate UE3 to report the mean value of repeatedly measuring the channel status of gained before at this.Need to prove that UE does not have inevitable order from subframe position and S310, the S320 that LPN obtains first kind subframe.
Optional; If UE does not get access to the subframe position of first kind subframe from LPN, then the subframe position of first kind subframe can be n11-x-m*N11, wherein; X is made an appointment by UE and LPN; Or preserve by UE, the value of x can be so that the time of some second specific sub-frame that the time of the first kind subframe of confirming and macro base station dispose be identical, and m is an integer.With Fig. 1 is example, and the x of UE1 and LPN agreement is 4, and the subframe position of the first kind subframe that UE1 measures is { 0; 8; 12...}, can find out, the subframe position of the first kind subframe that UE1 measures in fact with the location sets of the ABS subframe of macro base station configuration in subframe position identical.With Fig. 2 is example, and the x of UE3 and LPN agreement is 4, and the subframe position of the first kind subframe that UE1 measures is { 0; 16; 32...}, can find out, on the collective entity that the subframe position of the first kind subframe that UE3 measures is formed subclass with the location sets of the ABS subframe of macro base station configuration.
S330, UE confirm the subframe position with reference to subframe.
Wherein, UE can confirm the subframe position with reference to subframe according to the subframe position n11 of reporting channel state, for example, will confirm as n11-n with reference to the subframe position of subframe
Ref1Wherein, n
Ref1In value, make the minimum value that belongs to the location sets of first kind subframe with reference to the subframe position of subframe more than or equal to U.For example, in this step, U=4.
S340, UE measure the channel status of first kind subframe, and report LPN at the subframe position n11 that the confirms channel condition information that this first kind subframe is corresponding.
Concrete, the channel status of the first kind subframe that UE arrives according to cycle N11 and the subframe position n11 reporting measurement of confirming.If the channel status of the first kind subframe that UE measures satisfies first Rule of judgment, then the UE channel condition information that sends to LPN is got the value that satisfies the maximum of first Rule of judgment in 1 to K (K is the quantity that the channel condition information indicated value of definition is arranged); Otherwise UE sends to the LPN channel condition information and is taken as 0.Wherein, First Rule of judgment comprises: if the modulation system of channel condition information indication is transmitted on the subframe position with reference to subframe with data transmission block on the definite PDSCH of transmission block size, the mistake piece probability of this data transmission block is less than preset thresholding (for example 1%).
In the present embodiment, UE can confirm to report the subframe position of first kind subframe channel status, and after measuring first kind subframe, reports the reporting position channel status to give first base station at this.Because the subframe position of first kind subframe belongs to the subframe position set of second specific sub-frame, therefore first base station can be that UE effectively dispatches according to the channel status that receives.
In addition, UE of the prior art can not distinguish the type of subframe in the measurement and report process, and reporting measurement result's cycle maybe be different with the transmission cycle of second specific sub-frame, and for example UE reporting measurement result's cycle is 5; Sub-frame offset is 1, and promptly UE reporting measurement result's position is { 1,6,11; 16 ... }, if then the subframe position of the ABS subframe of UE measurement is { 0,8; 16 ... }, UE must buffer memory to subframe 16 just can report the measurement result of subframe 8.This be since UE of the prior art must be after measurement at least 4 sub-frame after could the reporting measurement result; Therefore; The subframe 11 of UE after measuring subframe 8 can only report the result to the measurement that subframe is done before the subframe 7, and can't report the measurement result of subframe 8.Therefore, UE reports the measurement result till the subframe 0 twice in subframe 6 and subframe 11 respectively, causes the waste of interface-free resources.And in the present embodiment, because UE according to the cycle reporting channel state of or integral multiple identical with the transmission cycle of second specific sub-frame, therefore, can avoid this to the waste of interface-free resources and the implementation complexity that reduces the UE side.
An alternative embodiment of the invention provides a kind of method of reporting channel state, and this embodiment is that the interference base station of LPN is an example with the macro base station, and the process of the UE reporting status information of channel of LPN service is described.Wherein, suppose that the ABS transmission cycle of macro base station configuration is 8ms, subframe 0, subframe 8, subframe 16 etc. are the ABS subframe.As shown in Figure 4, this embodiment comprises the steps.
S410, UE confirm to report the subframe position n11 of the channel status of first kind subframe.
This step is identical with S310 in the foregoing description, repeats no more here.
S420, UE receive the n that send first base station
Ref2
Optional, n is passed through in first base station
Ref2To the subframe position of UE indication reporting channel state with respect to skew with reference to the subframe position of subframe.Accordingly, UE can be with n-n
Ref2The subframe position of subframe as a reference.
Need to prove there is not inevitable order between above-mentioned S410 and the S420.
S430, UE are according to subframe position n11 and this n of reporting channel state
Ref2Confirm the subframe position of subframe to be measured (being first kind subframe).
For example, the subframe position of first kind subframe is n-n
Ref2-m*N, wherein, m is an integer.
S440, UE measure the channel status of first kind subframe, and report LPN at the subframe position n11 that the confirms channel condition information that this first kind subframe is corresponding.
This step is identical with S340 in the foregoing description, repeats no more here.
In the present embodiment, UE can confirm to report the subframe position of the channel status of first kind subframe, and after measuring first kind subframe, reports the reporting position channel status to give first base station at this.Because the subframe position of first kind subframe belongs to the subframe position set of second specific sub-frame, therefore first base station can be that UE effectively dispatches according to the channel status that receives.
In addition; UE of the prior art possibly receive reporting measurement result's cycle and side-play amount; And the subframe position of confirming the reporting measurement result according to reporting measurement result's cycle and side-play amount; But when UE can't receive the subframe position of subframe to be measured, must be in this subframe position a plurality of subframe measure channel quality before, then in above-mentioned definite subframe position reporting measurement result.These a plurality of subframes that cause UE to measure are not necessarily real subframe to be measured, and for example the UE of prior art can't measure on the subframe position of ABS subframe targetedly.UE can confirm the subframe position of subframe to be measured in the present embodiment, for example the subframe position of ABS subframe and common subframe is distinguished, thereby UE is measured on the subframe position of second specific sub-frame targetedly, and in time report first base station.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be stored in the computer read/write memory medium; Described storage medium, as: ROM/RAM, magnetic disc, CD etc.
An alternative embodiment of the invention provides a kind of terminal, and this terminal can be user equipment (UE), also can be other receiving terminals with respect to network.As shown in Figure 5, this terminal comprises Transmit-Receive Unit 510 and processing unit 520.Wherein, Transmit-Receive Unit 510 is used to receive the feedback cycle information that send first base station, the cycle N of the channel status that above-mentioned feedback cycle information is used to indicate UE to report first kind subframe; Processing unit 520 is used to measure the channel status of above-mentioned first kind subframe; Transmit-Receive Unit 510 also is used for according to above-mentioned cycle N the channel status that measures being reported above-mentioned first base station.
Wherein, Above-mentioned first kind subframe is to go up identical subframe with the second specific sub-frame time in first base station; Above-mentioned second specific sub-frame is the subframe of only sending local channel in all channels; The subframe position of above-mentioned second specific sub-frame is by second base station configuration, and above-mentioned second base station is the interference base station of first base station.
Optional, above-mentioned N is identical with the transmission cycle of above-mentioned second specific sub-frame, or is the integral multiple in the transmission cycle of above-mentioned second specific sub-frame.
Optional, the transmission cycle of above-mentioned second specific sub-frame, N was 4 milliseconds when being 4 milliseconds; Perhaps, N is 8 milliseconds when being 8 milliseconds the transmission cycle of above-mentioned second specific sub-frame; Perhaps, N is 16 milliseconds when being 16 milliseconds the transmission cycle of above-mentioned second specific sub-frame.
Optional, Transmit-Receive Unit 510 specifically is used in the subframe position of confirming that reports above-mentioned channel status channel status being reported above-mentioned first base station; Wherein, above-mentioned definite subframe position that reports above-mentioned channel status is that above-mentioned UE confirms according to above-mentioned cycle N and side-play amount, and above-mentioned side-play amount is to report the skew of the subframe position of above-mentioned channel status with respect to preset subframe position.Optional, above-mentioned side-play amount perhaps is a preset value by the offset information indication that UE receives from above-mentioned first base station.
Optional, above-mentioned first kind subframe is to go up identical subframe with the second specific sub-frame time in first base station to refer to: the subframe position of first kind subframe belongs to the set of the subframe position composition of second specific sub-frame.Wherein, the subframe position of above-mentioned first kind subframe possibility Transmit-Receive Unit 510 receives from above-mentioned first base station; Perhaps, the subframe position of above-mentioned first kind subframe is to be confirmed according to the subframe position of reporting channel state and the difference of parameter preset x by processing unit 520.
Optional, processing unit 520 also is used for the subframe position with reference to subframe is confirmed as: n-n
Ref1Wherein, n is the subframe position of UE reporting channel state, n
Ref1In the value of the set of forming for the subframe position that makes subframe position with reference to subframe belong to first kind subframe, more than or equal to the minimum value of parameter U, above-mentioned parameter U is a positive integer.
Optional, processing unit 520 is used for also confirming that the subframe position of above-mentioned first kind subframe is n-n
Ref2-m*N, said n is the subframe position of UE reporting channel state, n
Ref2Be parameter or the preset value that Transmit-Receive Unit 510 receives from above-mentioned first base station, m is an integer.Optional, said n
Ref2The subframe position of representing above-mentioned Transmit-Receive Unit 510 reporting channel states is with respect to the skew with reference to the subframe position of subframe, and processing unit 520 also is used for the subframe position with reference to subframe is confirmed as n-n
Ref2
Optional, processing unit 520 also is used for making a decision according to first Rule of judgment, and the judged result transmitting channel state information that Transmit-Receive Unit 510 is used for providing according to processing unit 520 is to first base station.For example, first Rule of judgment comprises: if the data transmission block on the PDSCH that the modulation system of channel condition information indication and transmission block size are confirmed transmits on the subframe position with reference to subframe, the mistake piece probability of above-mentioned data transmission block is less than preset thresholding.If the channel status that processing unit 520 measures satisfies first Rule of judgment, then above-mentioned channel condition information is the value that satisfies the maximum of first Rule of judgment in 1 to K; Otherwise above-mentioned channel condition information is 0.
The terminal that present embodiment provides can be used for the method and system of realizing that other embodiment of the present invention provide; The step that all are realized by UE; For example, Transmit-Receive Unit 510 can be used to carry out the step relevant with reception with the information transmission, and processing unit 520 can be used to carry out other steps; For example measure, confirm, step such as judgement, repeat no more here.Certainly, this terminal can also comprise memory cell, is used for preserving various preset values of the method and system that other embodiment of the present invention provide etc.
The subframe position of the channel status of first kind subframe can be confirmed to report in terminal in the present embodiment, and after measuring first kind subframe, reports the reporting position channel status to give first base station at this.Because the subframe position of first kind subframe belongs to the subframe position set of second specific sub-frame, therefore first base station can be that effectively dispatch at the terminal according to the channel status that receives.
An alternative embodiment of the invention provides a kind of network equipment, and this network equipment can be the base station, also can be other access network equipments that UE is dispatched.As shown in Figure 6, this network equipment comprises transmitting element 610 and receiving element 620.Wherein, transmitting element 610 is used for feedback cycle information is sent to UE, the cycle N of the channel status that above-mentioned feedback cycle information is used to indicate UE to report first kind subframe; Receiving element 620 is used to receive the channel status of the first kind subframe that above-mentioned UE reports according to above-mentioned cycle N.Wherein, Above-mentioned first kind subframe is to go up identical subframe with the second specific sub-frame time in first base station; Above-mentioned second specific sub-frame is the subframe of only sending local channel in all channels; The subframe position of above-mentioned second specific sub-frame is by second base station configuration, and above-mentioned second base station is the interference base station of first base station.
Optional, above-mentioned N is identical with the transmission cycle of above-mentioned second specific sub-frame, or is the integral multiple in the transmission cycle of above-mentioned second specific sub-frame.Optional, the transmission cycle of above-mentioned second specific sub-frame, N was 4 milliseconds when being 4 milliseconds; Perhaps, N is 8 milliseconds when being 8 milliseconds the transmission cycle of above-mentioned second specific sub-frame; Perhaps, N is 16 milliseconds when being 16 milliseconds the transmission cycle of above-mentioned second specific sub-frame.
Optional, transmitting element 610 also is used to send offset information and gives above-mentioned UE, and above-mentioned offset information is used to indicate the skew of the subframe position of UE reporting channel state with respect to preset subframe position.
Optional, the first kind subframe in the present embodiment is to go up identical subframe with the second specific sub-frame time in first base station to refer to: the subframe position of first kind subframe belongs to the set of the subframe position composition of second specific sub-frame.
Optional, transmitting element 610 also is used for the subframe position of above-mentioned first kind subframe is sent to above-mentioned UE.
Optional, transmitting element 610 also is used for parameter n
Ref2Send to UE, for UE according to above-mentioned parameter n
Ref2Confirm the subframe position of first kind subframe; Receiving element 620 specifically is used to receive the channel condition information that UE sends, the channel status of above-mentioned channel condition information indication UE first kind subframe.Optional, said n
Ref2The subframe position of representing above-mentioned UE reporting channel state is with respect to the skew with reference to the subframe position of subframe.
The network equipment that present embodiment provides can be used for the method and system of realizing that other embodiment of the present invention provide; The step that all are realized by first base station; For example; Transmitting element 610 can be used to carry out and the relevant step of information transmission, and receiving element 620 can be used to carry out the step relevant with message pick-up, repeats no more here.Certainly, this network can also comprise processing unit, is used to carry out other steps, for example selects first kind subframe etc.
The network equipment in the present embodiment can receive the first kind subframe channel status that UE reports, thereby can be that UE effectively dispatches according to the channel status that receives.
It below only is preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (22)
1. the method for a reporting channel state is characterized in that, comprising:
User equipment (UE) receives the feedback cycle information that send first base station, the cycle N of the channel status that said feedback cycle information is used to indicate UE to report first kind subframe;
Said UE measures the channel status of said first kind subframe;
Said UE reports said first base station according to said cycle N with the channel status that measures;
Wherein, Said first kind subframe is to go up identical subframe with the second specific sub-frame time in first base station; Said second specific sub-frame is the subframe of only sending local channel in all channels; The subframe position of said second specific sub-frame is by second base station configuration, and said second base station is the interference base station of first base station.
2. the method for claim 1 is characterized in that, said N is identical with the transmission cycle of said second specific sub-frame, or is the integral multiple in the transmission cycle of said second specific sub-frame.
3. the method for claim 1 is characterized in that,
The transmission cycle of said second specific sub-frame, N was 4 milliseconds when being 4 milliseconds; Perhaps, N is 8 milliseconds when being 8 milliseconds the transmission cycle of said second specific sub-frame; Perhaps, N is 16 milliseconds when being 16 milliseconds the transmission cycle of said second specific sub-frame.
4. the method for claim 1 is characterized in that, said UE reports said first base station according to said cycle N with the channel status that measures and comprises:
Said UE reports said first base station in the subframe position of confirming that reports said channel status with channel status; Wherein, said definite subframe position that reports said channel status is that said UE confirms according to said cycle N and side-play amount, and said side-play amount is to report the skew of the subframe position of said channel status with respect to preset subframe position.
5. method as claimed in claim 4 is characterized in that, said side-play amount perhaps is a preset value by the offset information indication that UE receives from said first base station.
6. like each described method of claim 1 to 5; It is characterized in that said first kind subframe is to go up identical subframe with the second specific sub-frame time in first base station to refer to: the subframe position of first kind subframe belongs to the set of the subframe position composition of second specific sub-frame.
7. method as claimed in claim 6 is characterized in that,
The subframe position of said first kind subframe sends to UE by said first base station; Perhaps,
The subframe position of said first kind subframe is that UE is according to the subframe position of reporting channel state and the difference of parameter preset x.
8. method as claimed in claim 7 is characterized in that, said UE reports the channel status that measures before said first base station according to said cycle N, also comprises:
UE will confirm as with reference to the subframe position of subframe: n-n
Ref1Wherein, n is the subframe position of UE reporting channel state, n
Ref1In the value of the set of forming for the subframe position that makes subframe position with reference to subframe belong to first kind subframe, more than or equal to the minimum value of parameter U, said parameter U is a positive integer.
9. method as claimed in claim 6 is characterized in that, said UE measured channel state comprises:
The subframe position of said first kind subframe is n-n
Ref2-m*N, said n are the subframe position of UE reporting channel state, n
Ref2Be parameter or the preset value that UE receives from said first base station, m is an integer.
10. method as claimed in claim 9 is characterized in that, said n
Ref2The subframe position of representing said UE reporting channel state is with respect to the skew with reference to the subframe position of subframe, and UE will confirm as n-n with reference to the subframe position of subframe
Ref2
11. like claim 7 or 9 described methods, it is characterized in that, saidly the channel status that measures is reported said first base station comprise:
Channel condition information is sent to said first base station; If the channel status that UE measures satisfies first Rule of judgment, then said channel condition information is the value that satisfies the maximum of first Rule of judgment in 1 to K; Otherwise said channel condition information is 0;
Wherein, Said first Rule of judgment comprises: if the data transmission block on the Physical Downlink Shared Channel that the modulation system of channel condition information indication and transmission block size are confirmed transmits on the subframe position with reference to subframe, the mistake piece probability of said data transmission block is less than preset thresholding.
12. the method for a receive channel state is characterized in that, comprising:
First base station sends to user equipment (UE) with feedback cycle information, the cycle N of the channel status that said feedback cycle information is used to indicate UE to report first kind subframe;
Said first base station receives the channel status of the first kind subframe that said UE reports according to said cycle N;
Wherein, Said first kind subframe is to go up identical subframe with the second specific sub-frame time in first base station; Said second specific sub-frame is the subframe of only sending local channel in all channels; The subframe position of said second specific sub-frame is by second base station configuration, and said second base station is the interference base station of first base station.
13. method as claimed in claim 12 is characterized in that, said N is identical with the transmission cycle of said second specific sub-frame, or is the integral multiple in the transmission cycle of said second specific sub-frame.
14. method as claimed in claim 12 is characterized in that,
The transmission cycle of said second specific sub-frame, N was 4 milliseconds when being 4 milliseconds; Perhaps, N is 8 milliseconds when being 8 milliseconds the transmission cycle of said second specific sub-frame; Perhaps, N is 16 milliseconds when being 16 milliseconds the transmission cycle of said second specific sub-frame.
15. method as claimed in claim 12 is characterized in that, said first base station receives before the channel status of the first kind subframe that UE reports according to said cycle N, also comprises:
Said first base station is sent offset information and is given said UE, and said offset information is used to indicate the skew of the subframe position of UE reporting channel state with respect to preset subframe position.
16. like each described method of claim 12 to 15; It is characterized in that said first kind subframe is to go up identical subframe with the second specific sub-frame time in first base station to refer to: the subframe position of first kind subframe belongs to the set of the subframe position composition of second specific sub-frame.
17. method as claimed in claim 16 is characterized in that, also comprises:
Said first base station sends to said UE with the subframe position of said first kind subframe.
18. method as claimed in claim 16 is characterized in that, said first base station receives before the channel status of the first kind subframe that UE reports according to said cycle N, and also comprise: said first base station is with parameter n
Ref2Send to UE, for UE according to said parameter n
Ref2Confirm the subframe position of first kind subframe;
Said first base station reception UE comprises according to the channel status of the first kind subframe that said cycle N reports: said first base station receives the channel condition information that UE sends, the channel status of said channel condition information indication UE first kind subframe.
19. method as claimed in claim 18 is characterized in that, said n
Ref2The subframe position of representing said UE reporting channel state is with respect to the skew with reference to the subframe position of subframe.
20. a terminal is characterized in that, comprises Transmit-Receive Unit and processing unit; Wherein, Said Transmit-Receive Unit is used to receive the feedback cycle information that send first base station; And according to said cycle N the channel status that measures is reported said first base station, the cycle N of the channel status that said feedback cycle information is used to indicate UE to report first kind subframe; Said processing unit is used to measure the channel status of said first kind subframe;
Wherein, Said first kind subframe is to go up identical subframe with the second specific sub-frame time in first base station; Said second specific sub-frame is the subframe of only sending local channel in all channels; The subframe position of said second specific sub-frame is by second base station configuration, and said second base station is the interference base station of first base station.
21. a network equipment is characterized in that, comprises transmitting element and receiving element; Wherein, said transmitting element is used for feedback cycle information is sent to UE, the cycle N of the channel status that said feedback cycle information is used to indicate UE to report first kind subframe; Said receiving element is used to receive the channel status of the first kind subframe that said UE reports according to said cycle N;
Wherein, Said first kind subframe is to go up identical subframe with the second specific sub-frame time in first base station; Said second specific sub-frame is the subframe of only sending local channel in all channels; The subframe position of said second specific sub-frame is by second base station configuration, and said second base station is the interference base station of first base station.
22. a system is characterized in that, comprises first base station and user equipment (UE); Wherein, the cycle N of the channel status that first base station is used to notify UE to report first kind subframe, UE is used to measure the channel status of first kind subframe, and according to said cycle N the channel status that measures is reported first base station; Wherein, Said first kind subframe is to go up identical subframe with the second specific sub-frame time in first base station; Said second specific sub-frame is the subframe of only sending local channel in all channels; The subframe position of said second specific sub-frame is by second base station configuration, and said second base station is the interference base station of first base station.
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| PCT/CN2012/070310 WO2012065578A1 (en) | 2010-11-15 | 2012-01-13 | Method, apparatus and system for reporting channel status |
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| WO2012065578A1 (en) | 2012-05-24 |
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