CN101986586B - A kind of channel quality measurement feedback method and subscriber equipment - Google Patents
A kind of channel quality measurement feedback method and subscriber equipment Download PDFInfo
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Abstract
The invention discloses a kind of channel quality measurement feedback method and subscriber equipment, can not the problem of accurately distinguishing cell edge customer and RLF for solving that RSRP and/or RSRQ information do not cause comprehensively, and the only feedback CQI existed in correlation technique and the performance of link circuit self-adapting that causes can be subject to the problem of certain impact.By technical scheme of the present invention, subscriber equipment is measured and is fed back RSRP and/or RSRQ, the CQI information that RSRP and/or RSRQ that corresponding strong jamming adjacent area is the subframe of almost full empty frame, CQI information and corresponding strong jamming adjacent area are the subframes of normal transmission subframe, solves the problem of accurately distinguishing CCU and CEU in heterogeneous network and avoids the phenomenon occurring RLF.In addition, the present invention can also make user in different subframe during transmitting data, can carry out better link circuit self-adapting, improve the throughput of system according to the CQI of dissimilar subframe.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of channel quality measurement feedback method and subscriber equipment.
Background technology
Have statistics to show, the throughput of system of following 80% ~ 90% will occur in indoor and focus scene.But traditional Cellular Networks technology has " heavy outdoor, gently indoor ", " heavy beehive net, light isolated hot spots ", features such as " heavy mobile handoff, light fixing nomadic ".One of focus of advanced long-term evolution system (Long-Term EvolutionAdvance, LTE-Advance) is just being optimized indoor and focus scene.Heterogeneous network (heterogeneous networks), as a kind of remarkable elevator system throughput and the technology improving overall network efficiency, can meet LTE Advance requirement well.Isomerism network structure introduces some transmitting nodes less relative to traditional cell base station transmitting power, comprises Pico cell (Picocell), femtocell (Femtocells) and the relay station (Relay) for signal relaying.The introducing of these nodes can provide good guarantee for covering that is indoor and focus scene; The transmitting power of these nodes is little, is convenient to on-premise network neatly; The coverage of these nodes is little simultaneously, can utilize the high band frequency spectrum that LTE Advanced is potential more easily.But the introducing of new node changes original topology of networks, the presence of intercell interference of this network configuration is made to become a new challenge.
Interference between heterogeneous network small area is generally serious than homogenous networks (Homogeneous Network), therefore needs the interference coordination technique of minizone, thus lowers the interference of minizone.Here, homogenous networks mainly refers in network the configuration scene only having macro base station eNB (Evoluted Node Base station) and user (UserEquipment, UE); Heterogeneous network mainly refers in macrocell the configuration scene of putting low power nodes LPN (Low Power Node).Low power nodes comprises Remote radio head (RRH), for the femto base station (Pico eNB) of the covering of hot zones, Home eNodeB (Home eNB, HeNB, also can be described as femto), relaying (Relay node) etc.
At third generation partner program (3rd Generation Partnership Project, 3GPP) in LTERAN162 meeting, determine the Main Means of mode as the problem of inter-cell interference of solution heterogeneous network that the mode that uses time domain to coordinate and part subframe be almost full empty frame (Almost Blank Subframe, ABS).According to the conclusion of RAN162bis meeting, Serving cell can obtain disturbing adjacent area subframe be subframe bitmap pattern (bitmap pattern) information of ABS and non-ABS instruction and pass to UE, and therefore UE can know that each subframe of Serving cell is the ABS of corresponding strong jamming adjacent area or the non-ABS of strong jamming adjacent area.Almost full empty frame refers in this subframe, only send public reference signal (Common ReferenceSignal, CRS) signal, does not send the subframe of other any signals.Namely producing the several descending sub frame of configuration in strongly disturbing community (aggressorcell) is ABS, the Cell Edge User (Cell Edge User, CEU) that correspondence is subject in strongly disturbing community (victim cell) is that ABS subframe launches its down control channel and data channel in the subframe of corresponding aggressor cell.Victim cell small area edge customer, can be subject to very strong presence of intercell interference, and owing to being cause signal power also lower at edge, Serving cell, is therefore also victim UE.Victim cell small area central user (Cell Center User, CCU) generally launches down control channel and data channel in non-ABS subframe.When victim UE number is fewer time, victimcell small area central user also can use remaining corresponding aggressor cell to be the running time-frequency resource of ABS.
The selection of Serving cell and switching, and user is that CCU or CEU needs by comparing and measuring Reference Signal Received Power (Reference Signal Receiving Power, RSRP) determine, RSRP is defined as the mean value of the signal power that all resource elements (Resource Element, RE) of certain time-domain symbol carrying Reference Signal receive.Due to the impact of presence of intercell interference, the accuracy measuring RSRP can decline, and presence of intercell interference is larger, and RSRP measures more inaccurate.To heterogeneous network, the accuracy that the interference that victim UE is subject in non-ABS subframe causes greatly RSRP to measure is not high, and the little accuracy that RSRP is measured of the interference that ABS subframe is subject to is higher.In addition, at OFDM (OrthogonalFrequency Division Multiplexing, OFDM) in system, even if the RSRP of the Serving cell measured is very large, if but presence of intercell interference is very large, makes Reference Signal Received Quality (Reference SignalReceiving Quality, RSRQ) very low, still Radio Link Failure (Radio Linkfailure, RLF) may be caused.Whether therefore also need this index of consideration RSRQ to consider can RLF.RSRQ is defined as the ratio of RSRP and received signal strength indicator (Received Signal Strength Indicator, RSSI).RSSI is the mean value of all signals (comprising pilot signal and data-signal, adjacent area interference signal, the noise signal etc.) power received in described time-domain symbol.Because both measure based on bandwidth may be different, can adjust with a coefficient, namely RSRQ=N*RSRP/RSSI, wherein N represents bandwidth factor.To heterogeneous network, because the RSRQ of victim UE in non-ABS subframe is very low, RLF will be caused.In order to avoid RLF, victim UE needs to measure the RSRQ that corresponding aggressor cell is this community of ABS subframe.But owing to ABS subframe there is no the interference of aggressor cell, make to measure the RSRQ come and can not reflect disturbed condition in non-ABS subframe, thus accurately cannot judge which user is victim UE.And in order to improve the performance of victim UE, victim UE must be limited in ABS subframe and dispatch.Therefore accurately judge which user is victim UE, and make the impact of the signal transmitting of victim UE on systematic function and user's impression very large.
And, the channel quality measured due to the user of victim cell in ABS subframe and non-ABS subframe is different, victim cell needs to know channel quality instruction (the Channel Quality Indication of CCU in this two classes subframe accurately, CQI), scheduled transmission could be carried out in ABS subframe and non-ABS subframe neatly.In LTE Release 8 agreement, what specify only a kind of CQI reports form.This makes victim cell can not accomplish link circuit self-adapting well, thus the performance of influential system.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of signal channel quality measuring method and subscriber equipment, can not distinguishing cell edge customer and RLF for solving that RSRP and/or RSRQ information do not cause comprehensively, and the only feedback CQI existed in correlation technique and the performance of link circuit self-adapting that causes can be subject to the problem of certain impact.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of channel quality measurement feedback method, the method comprises:
Subscriber equipment, in affiliated Serving cell, the correspondence subframe that adjacent area is disturbed in various degree is measured respectively, is obtained the channel quality information of adjacent area interference in various degree.
Further, based on embodiments of the invention, described method is specially:
In corresponding adjacent area subframe bitmap pattern (bitmap pattern) different indicated value subframe on measure respectively;
One or more in following channel quality information are obtained: the first Reference Signal Received Power (RSRP1), the first Reference Signal Received Quality (RSRQ1), the first channel quality instruction (CQI1) for the first kind subframe in the subframe bitmap of described adjacent area;
One or more in following channel quality information are obtained: the second Reference Signal Received Power (RSRP2), the second Reference Signal Received Quality (RSRQ2), second channel quality instruction (CQI2) for the Equations of The Second Kind subframe in the subframe bitmap of described adjacent area.
Further, based on embodiments of the invention, described method is specially:
Described subscriber equipment is that the subframe of almost full empty frame (ABS) is measured in the subframe of corresponding strong jamming adjacent area, obtains one or more in following channel quality information: the first Reference Signal Received Power (RSRP1), the first Reference Signal Received Quality (RSRQ1), the first channel quality instruction (CQI1).
Further, based on embodiments of the invention, described method also comprises:
Described subscriber equipment is that the subframe of non-ABS is measured in the subframe of corresponding strong jamming adjacent area, obtains one or more in following channel quality information: the second Reference Signal Received Power (RSRP2), the second Reference Signal Received Quality (RSRQ2), second channel quality instruction (CQI2).
Further, based on embodiments of the invention, described method also comprises:
Described subscriber equipment is that multiple subframes of ABS and non-ABS are measured in the subframe of corresponding strong jamming adjacent area, obtains one or more in following channel quality information: the second Reference Signal Received Power (RSRP2), the second Reference Signal Received Quality (RSRQ2), second channel quality instruction (CQI2).
Further, the subframe of carrying out the described corresponding strong jamming adjacent area of described measurement is the subframe of ABS and non-ABS is the subframe of Serving cell.
Further, based on embodiments of the invention, described method also comprises:
Described subscriber equipment by described first Reference Signal Received Power, the first Reference Signal Received Quality, the first channel quality instruction one of at least and the second Reference Signal Received Power, the second Reference Signal Received Quality, one of at least feed back to transmitting terminal in the instruction of second channel quality.
Further, based on embodiments of the invention, described method also comprises:
Described subscriber equipment by described first Reference Signal Received Power, the first Reference Signal Received Quality, the first channel quality instruction one of at least and the difference of the first and second Reference Signal Received Power, the difference of the first and second Reference Signal Received Quality, the first and second channel qualities instructions difference in one of at least feed back to transmitting terminal.
Based on the method for the invention, the present invention also provides a kind of subscriber equipment, comprises in this subscriber equipment:
Measurement module, for measuring respectively in the correspondence subframe that adjacent area is disturbed in various degree;
Acquisition module, for obtaining the channel quality information in the subframe of corresponding adjacent area in various degree interference according to the measurement result of described measurement module.
Further, based on embodiments of the invention, the subframe of described measurement module different indicated value in the subframe bitmap pattern of corresponding adjacent area is measured respectively;
Acquisition module obtains one or more in following channel quality information for the first kind subframe in the subframe bitmap of described adjacent area: the first Reference Signal Received Power, the first Reference Signal Received Quality, the first channel quality instruction;
Acquisition module obtains one or more in following channel quality information for the Equations of The Second Kind subframe in the subframe bitmap of described adjacent area: the second Reference Signal Received Power, the second Reference Signal Received Quality, second channel quality indicate.
Further, based on embodiments of the invention, described acquisition module is that the subframe of ABS is measured in the subframe of corresponding strong jamming adjacent area, one or more also for obtaining in the following channel quality information in the subframe that the subframe of corresponding strong jamming adjacent area is ABS according to the measurement result of described measurement module of described acquisition module: the first Reference Signal Received Power, the first Reference Signal Received Quality, the first channel quality instruction.
Further, based on embodiments of the invention, described measurement module is also measured in the subframe in the subframe of corresponding strong jamming adjacent area being non-ABS; One or more also for obtaining in the following channel quality information in the subframe that the subframe of corresponding strong jamming adjacent area is non-ABS according to the measurement result of described measurement module of described acquisition module: the second Reference Signal Received Power, the second Reference Signal Received Quality, second channel quality indicate.
Further, based on embodiments of the invention, described measurement module is also measured in the multiple subframes in corresponding strong jamming adjacent area being ABS and non-ABS; Described acquisition module is also for one or more in the following channel quality information that obtains according to the measurement result of described measurement module: the second Reference Signal Received Power, the second Reference Signal Received Quality, second channel quality indicate.
Further, the subframe of the described corresponding strong jamming adjacent area measured by described measurement module is the subframe of ABS and non-ABS is the subframe of Serving cell.
Further, based on embodiments of the invention, described subscriber equipment also comprises:
Feedback module, for by described first Reference Signal Received Power, the first Reference Signal Received Quality, the first channel quality instruction one of at least and the second Reference Signal Received Power, the second Reference Signal Received Quality, one of at least feed back to transmitting terminal in the instruction of second channel quality.
Further, based on embodiments of the invention, described subscriber equipment also comprises:
Feedback module, for by described first Reference Signal Received Power, the first Reference Signal Received Quality, the first channel quality instruction one of at least and the difference of the first and second Reference Signal Received Power, the difference of the first and second Reference Signal Received Quality, the first and second channel qualities instructions difference in one of at least feed back to transmitting terminal.
Pass through the present invention, subscriber equipment is measured and fed back corresponding strong jamming adjacent area is one or more in the following channel quality information of the subframe of ABS: RSRP, RSRQ, CQI, and corresponding strong jamming adjacent area is one or more in the following channel quality information of the subframe of normal transmission subframe: RSRP, RSRQ, CQI, solves the problem of accurately differentiation CCU and CEU in heterogeneous network and avoid the phenomenon occurring RLF.In addition, the present invention can also make user in different subframe during transmitting data, can carry out better link circuit self-adapting, improve the throughput of system according to the CQI of dissimilar subframe.
Accompanying drawing explanation
Fig. 1 is the flow chart according to the channel quality measurement of the embodiment of the present invention and the processing method of feedback;
Fig. 2 is the structured flowchart of the subscriber equipment according to the embodiment of the present invention;
Fig. 3 is the preferred structure block diagram of the subscriber equipment according to the embodiment of the present invention;
Fig. 4 is the schematic diagram according to subframe upper signal channel mass measurement in embodiment of the present invention heterogeneous network Macro-pico scene;
Fig. 5 is the schematic diagram according to subframe upper signal channel mass measurement in embodiment of the present invention heterogeneous network Macro-femto scene.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Following examples are mainly used in heterogeneous network system, but also can use in homogenous networks.
Embodiment one
In the present embodiment, provide a kind of processing method of channel quality measurement, Fig. 1 is the flow chart of the processing method of channel quality measurement according to the embodiment of the present invention, and as shown in Figure 1, this flow process comprises the following steps:
Step S102, subscriber equipment, in affiliated Serving cell, the correspondence subframe that adjacent area is disturbed in various degree is measured respectively;
Measurement in described subframe for measuring the public reference signal of Serving cell in certain or certain several time-domain symbol of described subframe or the public reference signal of interfered cell, or can be measured all signals received on described symbol.
Step S104, subscriber equipment obtains the channel quality information of the interference of adjacent area in various degree by described measurement, channel quality information comprise in following information one or more: RSRP, RSRQ, CQI.
Preferably, by above-mentioned steps, the channel quality information in the subframe of different indicated value in corresponding adjacent area subframe bitmap pattern (bitmap pattern) can be obtained;
Preferably, by above-mentioned steps, can obtain in the following channel quality information in ABS subframe and non-ABS subframe one or more: RSRP, RSRQ, CQI.The RSRQ that ABS subframe is measured is more accurate, and it is higher to compare the little RSRQ that makes of non-ABS subframe from the interference of minizone, Cell Edge User can be avoided to occur Radio Link Failure, and can in the subframe that the subframe of corresponding strong jamming adjacent area is ABS (ABS also can be described as subframe of mourning in silence) rational management user, better link circuit self-adapting.
Preferably, subscriber equipment is the subframe of non-ABS subframe is measured in the resource of the public reference signal of Serving cell and interfered cell and whole time-domain symbol to receive signal power in the subframe of corresponding strong jamming adjacent area, obtain the channel quality information having the interference of cooperation adjacent area, such as RSRP, RSRQ, CQI.By this preferred embodiment, reasonably can estimate interference, edge, distinguishing cell and Cell Center User, improve link circuit self-adapting ability.
Preferably, subframe in corresponding strong jamming adjacent area can be one or more in the following channel quality information that the subframe of ABS subframe obtains by subscriber equipment: the first Reference Signal Received Power (RSRP1), first Reference Signal Received Quality (RSRQ1), first channel quality instruction (CQI1), and be one or more in following channel quality information that the subframe of non-ABS subframe obtains in the subframe of corresponding strong jamming adjacent area: the second Reference Signal Received Power (RSRP2), second Reference Signal Received Quality (RSRQ2), second channel quality instruction (CQI2), feed back to transmitting terminal, described transmitting terminal can be macro base station or low power nodes etc.
Preferably, subscriber equipment can use the method for difference by the channel quality information feedback of acquisition to transmitting terminal, such as, subscriber equipment by RSRP1, RSRQ1, CQI1 one of at least and Δ CQI, the Δ RSRQ of correspondence, one of at least send to transmitting terminal in Δ RSRP, wherein Δ CQI=CQI1-CQI2, Δ RSRP=RSRP1-RSRP2, Δ RSRQ=RSRQ1-RSRQ2.
Subscriber equipment by feed back the subframe of corresponding strong jamming adjacent area be the channel quality information of the Serving cell of ABS subframe and non-ABS subframe solve due to RSRP and/or RSRQ information does not cause transmitting terminal comprehensively can not distinguishing cell edge customer, and the only feedback CQI existed in correlation technique and the performance of link circuit self-adapting that causes can be subject to the problem of certain impact.
In the present embodiment, additionally provide a kind of subscriber equipment, Fig. 2 is the user device architecture block diagram comprising the module for realizing the method for the invention according to embodiment of the present invention example, as shown in Figure 2, comprise in this subscriber equipment: measurement module 22, acquisition module 24, be explained below.
Measurement module 22, for measuring respectively in the correspondence subframe that adjacent area is disturbed in various degree;
Acquisition module 24, for obtaining the channel quality information in the subframe of corresponding adjacent area in various degree interference according to the measurement result of described measurement module.
Preferably, the subframe of described measurement module different indicated value in the subframe bitmap pattern of corresponding adjacent area is measured respectively; Acquisition module obtains one or more in following channel quality information for the first kind subframe in the subframe bitmap of described adjacent area: the first Reference Signal Received Power, the first Reference Signal Received Quality, the first channel quality instruction; Acquisition module obtains one or more in following channel quality information for the Equations of The Second Kind subframe in the subframe bitmap of described adjacent area: the second Reference Signal Received Power, the second Reference Signal Received Quality, second channel quality indicate.
Preferably, measurement module 22 is that the subframe of ABS is measured in the subframe of corresponding strong jamming adjacent area, one or more also for obtaining in the following channel quality information in the subframe that the subframe of corresponding strong jamming adjacent area is ABS according to the measurement result of described measurement module of described acquisition module: the first Reference Signal Received Power, the first Reference Signal Received Quality, the first channel quality instruction;
Preferably, described measurement module is also measured in the subframe in the subframe of corresponding strong jamming adjacent area being non-ABS; One or more also for obtaining in the following channel quality information in the subframe that the subframe of corresponding strong jamming adjacent area is non-ABS according to the measurement result of described measurement module of described acquisition module: the second Reference Signal Received Power, the second Reference Signal Received Quality, second channel quality indicate
Fig. 3 is the preferred structure block diagram of the subscriber equipment according to the embodiment of the present invention, as shown in Figure 3, this subscriber equipment also comprises: feedback module 32, this module be used for by RSRP1, RSRQ1, CQI1 one of at least, and one of at least feed back to transmitting terminal in RSRP2, RSRQ2, CQI2; Or, feedback module 32 is for feeding back to transmitting terminal by the difference of RSRP1 and RSRP2 and RSRP1 and RSRP2, and/or in the difference of RSRQ1 and RSRQ2 and RSRQ1 and RSRQ2 is fed back to transmitting terminal, and/or in the difference of CQI1 and CQI2 and CQI1 and CQI2 is fed back to transmitting terminal.
Preferably, predefined feedback information is fed back to transmitting terminal by subscriber equipment (feedback module of such as this subscriber equipment), and wherein, this predefined feedback information is used to indicate the state of this subscriber equipment by adjacent area interference.
Embodiment two
In the present embodiment, UE measures the signal resource from each community received by the subframe of the Serving cell of ABS, obtains one or more in following channel quality information: RSRP1, RSRQ1, CQI1.UE measures the signal resource from each community received by the subframe of the Serving cell of non-ABS, obtains one or more in following channel quality information: RSRP2, RSRQ2, CQI2.
UE one of at least will feed back to transmitting terminal one of at least and in RSRP2, RSRQ2, CQI2 in RSRP1, RSRQ1, CQI1, and this transmitting terminal comprises: Hong Qu base station or low power nodes.
Preferably, UE also can utilize the difference of following formulae discovery RSRP/RSRQ/CQI: Δ CQI=CQI2-CQI1; Δ RSRP=RSRP2-RSRP1; Δ RSRQ=RSRQ2-RSRQ1.CQI1/RSRP1/RSRQ and Δ CQI/ Δ RSRP/ Δ RSRQ is fed back to transmitting terminal by UE, and this transmitting terminal comprises: Hong Qu base station or low power nodes.
By the present embodiment, terminal can measure the interference and RST that adjacent area is reality under ABS and non-ABS, improves the estimated quality of reference signal.
Embodiment three
In the present embodiment, UE measures the signal resource from each community received by the subframe of the Serving cell of ABS, obtains RSRQ1 and/or CQI1.UE measures the signal resource from each community received by the subframe of the Serving cell of non-ABS, obtains RSRQ2 and/or CQI2.
UE is by channel quality information RSRQ1 and CQI1, and in RSRQ2 and CQI2 one feeds back to transmitting terminal, and this transmitting terminal comprises: Hong Qu base station or low power nodes.Transmitting terminal can utilize following formula, and according to RSRQ1 and CQI1, and in RSRQ2 and CQI2 one calculates another in RSRQ2 and CQI2.As CQI2=CQI1+ (RSRQ2-RSRQ1); RSRQ2=RSRQ1+ (CQI2-CQI1).
Preferably, UE is by channel quality information RSRQ1 and CQI1, and in Δ RSRQ2 and Δ CQI2 one feeds back to transmitting terminal, and this transmitting terminal comprises: Hong Qu base station or low power nodes.Transmitting terminal can utilize following formula, and according to RSRQ1 and CQI1, and in Δ RSRQ2 and Δ CQI2 one calculates another in RSRQ2 and CQI2.As CQI2=CQI1+ Δ RSRQ; RSRQ2=RSRQ1+ Δ CQI.
By the present embodiment, terminal can measure the interference and RST that adjacent area is reality under ABS and non-ABS, improves the estimated quality of reference signal.
Embodiment four
The present embodiment is the scene of the heterogeneous network system Macro-pico having interference coordination.Wherein macro base station Macro is aggressor cell, pico cell edge UE is victim UE.
As shown in Figure 4, suppose it is synchronous between base station, and the alignment of the subframe numbers of each base station.In the radio frames of a 10ms, the subframe 2 of Macro eNB and subframe 6 are ABS subframes, and other 8 subframes are non-ABS subframes.Pico UE measures subframe 2 and/or subframe 6 obtains CQI1/RSRP1, measures other subframes and obtains CQI2/RSRP2.CQI 1/RSRP 1/RSRQ and CQI2/RSRP2/RSRQ is fed back to pico eNB transmitting terminal by Pico UE.According to RSRP/RSRQ, Pico eNB determines that UE is CEU or CCU, and limiting pico CEU only scheduling and use CQI1 information in the subframe of the corresponding Macro eNB ABS as subframe 2 and subframe 6, pico CCU dispatches and uses CQI2 to carry out link circuit self-adapting in the subframe of the non-ABS of other corresponding Macro eNB.When pico CEU user is little, pico CCU also can be allowed to dispatch in the subframe of corresponding Macro eNB ABS, and use CQI1 to carry out link circuit self-adapting.This channel variation that pico UE can be made better can to adapt to user mobility cause, makes full use of channel quality information, more neatly dispatched users, improves throughput of system.
Preferably, UE also can utilize the difference of following formulae discovery CQI and RSRP and RSRQ:
ΔCQI＝CQI2-CQI1；ΔRSRP＝RSRP2-RSRP1；ΔRSRQ＝RSRQ2-RSRQ1.
CQI1/RSRP1/RSRQ and Δ CQI/ Δ RSRP/ Δ RSRQ is fed back to transmitting terminal picoeNB by Pico UE.
Embodiment five
The present embodiment is the scene of the heterogeneous network system Macro-femto having interference coordination.Wherein Home eNodeB HeNB is aggressor cell, and the Macro UE being positioned at HeNB is victim UE.
As shown in Figure 5, suppose it is synchronous between base station, and the alignment of the subframe numbers of each base station.In the radio frames of a 10ms, the subframe 1,3 and 7 of HeNB is ABS subframe, and other 7 subframes are non-ABS subframes.Macro UE measures and one of at least obtains CQI1/RSRP1/RSRQ1 in the subframe 1 of Macro eNB, subframe 3 and subframe 7, measures other subframes and obtains CQI2/RSRP2/RSRQ2.CQI1/RSRP1/RSRQ1 and CQI2/RSRP2/RSRQ2 is fed back to Macro eNB transmitting terminal by Macro UE.According to feedback RSRP and/or RSRQ, MacroeNB determines whether UE is victim UE, and limiting victim UE only scheduling and use CQI1 information in the ABS subframe as subframe 1,3 and 7, other users dispatch and use CQI2 to carry out link circuit self-adapting in non-ABS subframe.When victim Macro UE is little, other Macro UE also can be allowed to dispatch in ABS subframe, and use CQI1 to carry out link circuit self-adapting.This can make Macro UE can better link circuit self-adapting, and throughput of system is maximized.
Preferably, Macro UE also can utilize the difference of following formulae discovery CQI/RSRP/RSRQ:
ΔCQI＝CQI2-CQI1；ΔRSRP＝RSRP2-RSRP1；ΔRSRP＝RSRQ2-RSRQ1。
CQI1/RSRP1/RSRQ1 and Δ CQI/ Δ RSRP/ Δ RSRQ is fed back to transmitting terminal Macro eNB by Macro UE.
Embodiment six
In the present embodiment, UE measures in the corresponding subframe in Serving cell according to subframe bitmap pattern (bitmap pattern) information of adjacent area.Be designated as the upper measurement of subframe (first kind subframe) of 1 at adjacent area subframe message bit pattern, obtain one or more in following channel quality information: RSRP1, RSRQ1, CQI1.The subframe (Equations of The Second Kind subframe) being designated as 0 at adjacent area subframe message bit pattern above or in all subframes of adjacent area subframe bitmap instruction is measured, and obtains one or more in following channel quality information: RSRP2, RSRQ2, CQI2.
UE one of at least will feed back to transmitting terminal one of at least and in RSRP2, RSRQ2, CQI2 in RSRP1, RSRQ1, CQI1, and this transmitting terminal comprises: Hong Qu base station or low power nodes.
Preferably, UE also can utilize the difference of following formulae discovery RSRP/RSRQ/CQI: Δ CQI=CQI2-CQI1; Δ RSRP=RSRP2-RSRP1; Δ RSRQ=RSRQ2-RSRQ1.CQI1/RSRP1/RSRQ and Δ CQI/ Δ RSRP/ Δ RSRQ is fed back to transmitting terminal by UE, and this transmitting terminal comprises: Hong Qu base station or low power nodes.
By the present embodiment, terminal can measure interference and the RST of the reality under the different subframe type instruction in adjacent area, improves the estimated quality of reference signal.
By above-described embodiment, reasonably estimate interference, compare the method all not sending out data on the resource element of neighbor cell transmitting channel state information reference signals, can throughput of system be improved.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a channel quality measurement feedback method, is characterized in that, the method comprises:
Subscriber equipment, in affiliated Serving cell, the correspondence subframe that adjacent area is disturbed in various degree is measured respectively, is obtained the channel quality information of adjacent area interference in various degree;
Wherein, described method specifically comprises:
In corresponding adjacent area subframe bitmap pattern bitmap pattern different indicated value subframe on measure respectively;
One or more in following channel quality information are obtained: the first Reference Signal Received Power RSRP1, the first Reference Signal Received Quality RSRQ1, the first channel quality indicator (CQI) 1 for the first kind subframe in the subframe bitmap of described adjacent area;
One or more in following channel quality information are obtained: the second Reference Signal Received Power RSRP2, the second Reference Signal Received Quality RSRQ2, second channel quality indicator (CQI) 2 for the Equations of The Second Kind subframe in the subframe bitmap of described adjacent area;
Or,
Described subscriber equipment is that the subframe of almost full empty frame ABS is measured in the subframe of corresponding strong jamming adjacent area, obtains one or more in following channel quality information: the first Reference Signal Received Power RSRP1, the first Reference Signal Received Quality RSRQ1, the first channel quality indicator (CQI) 1.
2. method according to claim 1, is characterized in that, be that the subframe of almost full empty frame ABS is measured at described subscriber equipment in the subframe of corresponding strong jamming adjacent area, when obtaining channel quality information, described method also comprises:
Described subscriber equipment is that the subframe of non-ABS is measured in the subframe of corresponding strong jamming adjacent area, obtains one or more in following channel quality information: the second Reference Signal Received Power RSRP2, the second Reference Signal Received Quality RSRQ2, second channel quality indicator (CQI) 2.
3. method according to claim 1, is characterized in that, be that the subframe of almost full empty frame ABS is measured at described subscriber equipment in the subframe of corresponding strong jamming adjacent area, when obtaining channel quality information, described method also comprises:
Described subscriber equipment is that multiple subframes of ABS and non-ABS are measured in the subframe of corresponding strong jamming adjacent area, obtains one or more in following channel quality information: the second Reference Signal Received Power RSRP2, the second Reference Signal Received Quality RSRQ2, second channel quality indicator (CQI) 2.
4. according to the method in claim 2 or 3, it is characterized in that, the subframe of carrying out the described corresponding strong jamming adjacent area of described measurement is the subframe of ABS and non-ABS is the subframe of Serving cell.
5. the method according to claim 1,2 or 3, is characterized in that, described method also comprises:
Described subscriber equipment by described first Reference Signal Received Power, the first Reference Signal Received Quality, the first channel quality instruction one of at least and the second Reference Signal Received Power, the second Reference Signal Received Quality, one of at least feed back to transmitting terminal in the instruction of second channel quality.
6. the method according to claim 1,2 or 3, is characterized in that, described method also comprises:
Described subscriber equipment by described first Reference Signal Received Power, the first Reference Signal Received Quality, the first channel quality instruction one of at least and the difference of the first and second Reference Signal Received Power, the difference of the first and second Reference Signal Received Quality, the first and second channel qualities instructions difference in one of at least feed back to transmitting terminal.
7. a subscriber equipment, is characterized in that, comprises in this subscriber equipment:
Measurement module, for measuring respectively in the correspondence subframe that adjacent area is disturbed in various degree;
Acquisition module, for obtaining the channel quality information in the subframe of corresponding adjacent area in various degree interference according to the measurement result of described measurement module;
Wherein, the subframe of described measurement module different indicated value in the subframe bitmap pattern of corresponding adjacent area is measured respectively;
Acquisition module obtains one or more in following channel quality information for the first kind subframe in the subframe bitmap of described adjacent area: the first Reference Signal Received Power, the first Reference Signal Received Quality, the first channel quality instruction;
Acquisition module obtains one or more in following channel quality information for the Equations of The Second Kind subframe in the subframe bitmap of described adjacent area: the second Reference Signal Received Power, the second Reference Signal Received Quality, second channel quality indicate;
Or,
Described measurement module is that the subframe of ABS is measured in the subframe of corresponding strong jamming adjacent area, one or more also for obtaining in the following channel quality information in the subframe that the subframe of corresponding strong jamming adjacent area is ABS according to the measurement result of described measurement module of described acquisition module: the first Reference Signal Received Power, the first Reference Signal Received Quality, the first channel quality instruction.
8. subscriber equipment according to claim 7, is characterized in that,
Described measurement module is also for being that the subframe of almost full empty frame ABS is measured at described subscriber equipment in the subframe of corresponding strong jamming adjacent area, obtain channel quality information when, in the subframe of corresponding strong jamming adjacent area be non-ABS subframe on measure; One or more also for obtaining in the following channel quality information in the subframe that the subframe of corresponding strong jamming adjacent area is non-ABS according to the measurement result of described measurement module of described acquisition module: the second Reference Signal Received Power, the second Reference Signal Received Quality, second channel quality indicate.
9. subscriber equipment according to claim 7, is characterized in that,
Described measurement module is also for being that the subframe of almost full empty frame ABS is measured at described subscriber equipment in the subframe of corresponding strong jamming adjacent area, obtain channel quality information when, in corresponding strong jamming adjacent area be ABS and non-ABS multiple subframes on measure; Described acquisition module is also for one or more in the following channel quality information that obtains according to the measurement result of described measurement module: the second Reference Signal Received Power, the second Reference Signal Received Quality, second channel quality indicate.
10. subscriber equipment according to claim 8 or claim 9, is characterized in that, the subframe of the described corresponding strong jamming adjacent area measured by described measurement module is the subframe of ABS and non-ABS is the subframe of Serving cell.
11. subscriber equipmenies according to claim 7,8 or 9, it is characterized in that, described subscriber equipment also comprises:
Feedback module, for by described first Reference Signal Received Power, the first Reference Signal Received Quality, the first channel quality instruction one of at least and the second Reference Signal Received Power, the second Reference Signal Received Quality, one of at least feed back to transmitting terminal in the instruction of second channel quality.
12. subscriber equipmenies according to claim 7,8 or 9, it is characterized in that, described subscriber equipment also comprises:
Feedback module, for by described first Reference Signal Received Power, the first Reference Signal Received Quality, the first channel quality instruction one of at least and the difference of the first and second Reference Signal Received Power, the difference of the first and second Reference Signal Received Quality, the first and second channel qualities instructions difference in one of at least feed back to transmitting terminal.
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