CN102170334B - The acquisition methods of channel quality indication (CQI) information and device - Google Patents
The acquisition methods of channel quality indication (CQI) information and device Download PDFInfo
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Abstract
The invention discloses acquisition methods and the device of a kind of channel quality indication (CQI) information, wherein, the method includes: via node receives the CSI reference resources that base station sends；CSI RS and/or CRS that CSI reference resources is corresponding is measured by via node；Via node determines the CQI value that CSI reference resources is corresponding, where it is assumed that R PDCCH does not take the resource element in CSI reference resources according to measuring the result obtained；Or, it is assumed that the resource element being configured without in CSI reference resources is to R PDCCH；CQI value is reported base station by via node.The present invention solves via node in existing system cannot obtain channel quality indication (CQI) information accurately because not accounting for the existence of R PDCCH, cause motility and the problem of performance reduction of system, and then reached accurate acquisition channel quality indication (CQI) information, improve system flexibility and the effect of performance.
Description
Technical field
The present invention relates to the communications field, in particular to acquisition methods and the device of a kind of channel quality indication (CQI) information.
Background technology
In wireless communication technology, base station side (the node B i.e. eNodeB of such as evolution is called for short eNB) uses many antennas to send out
When sending data, message transmission rate can be improved in the way of taking spatial reuse, i.e. use identical running time-frequency resource at transmitting terminal
Launching different data in different aerial positions, receiving terminal (such as subscriber equipment (UserEquipment is called for short UE)) is also
Many antennas are used to receive data.In the case of single user, the resource of all antennas being distributed on same user, this user exists
Occupying alone the physical resource distributing to base station side in one transmission intercal, this transmission means is referred to as single user multiple-input, multiple-output
(Single User Multiple-Input Multiple-Out-put is called for short SU-MIMO)；Will the most on the same day in the case of multi-user
The space resources of line distributes to different user, a user and at least one other user sharing base side in a transmission intercal
The physical resource of distribution, sharing mode can be to be space division multiple access mode or space division multiplexing mode, and this transmission means is the most multiplex
Family multiple-input, multiple-output (Multiple User Multiple-Input Multiple-Out-put is called for short MU-MIMO), wherein base station side is divided
The physical resource joined refers to running time-frequency resource.If transmission system to support that SU-MIMO and MU-MIMO, eNB then need simultaneously
The data under both patterns are provided to UE.UE, when SU-MIMO pattern or MU-MIMO pattern, is both needed to know eNB
For the order (Rank) used by this UE transmission MIMO data.Under SU-MIMO pattern, the resource of all antennas is all distributed
To same user, the transmission number of plies used by MIMO data is equal to eNB in the order used by transmission MIMO data；?
Under MU-MIMO pattern, a corresponding user transmits the number of plies used total number of plies less than eNB transmission MIMO data, if
The switching of SU-MIMO pattern to be carried out and MU-MIMO, eNB needs to send a notice controls different for UE at different transmission mode
Data processed.
In long evolving system (Long Term Evolution is called for short LTE), the up control signaling needing transmission has correctly
/ error response message (Acknowledgement/Negative Acknowledgement is called for short ACK/NACK), and reflection
Three kinds of forms of the information (Channel State Information is called for short CSI) of down physical channel state: channel quality indicates
(Channels quality indication, CQI), pre-coding matrix instruction (Pre-coding Matrix Indicator, PMI), order
Instruction (Rank Indicator, RI).
CQI is used to weigh an index of down channel quality quality.In 36-213 agreement CQI with 0～15 integer value
Representing, representing different CQI grades respectively, different CQI correspond to respective code modulation mode (Modulation and
Coding Scheme, MCS), refer to table 1 (4 bit CQI form).
Table 1
Wherein, the QPSK in above-mentioned table is QPSK (Quadrature Phase Shift Keying), and QAM is orthogonal
Amplitude modulation(PAM) (Quadrature Amplitude Modulation).
The selection of CQI grade should follow following criterion:
Selected CQI grade, should make PDSCH corresponding to this CQI (Physical Downlink Shared Channel,
Physical Downlink Shared Channel) transmission block Block Error Rate under corresponding MCS is less than 0.1.
Based on a unrestricted assay intervals in frequency domain and time domain, UE is by obtaining the highest CQI value, corresponding to each upper
The maximum CQI value reported in row subframe n, the serial number range of CQI is 1-15, and meets following condition, if CQI sequence number 1
Condition is not satisfied, CQI serial number 0: single PDSCH transmission block error rate when being received is less than 0.1, PDSCH
Transmission block comprises united information: modulation system and transport block size, and it is descending corresponding to a CQI sequence number and take one group
Physical Resource Block, i.e. CSI reference resources.Wherein, this highest CQI value refers to, ensure Packet Error Ratio (block error rate,
Be called for short BLER) be not more than 0.1 time maximum CQI value, be conducive to control resource distribution.In general, CQI value is the least, accounts for
Resource the most, BLER performance is the best.
Corresponding to a CQI sequence number, there is transport block size and modulation system united information, if:
1) according to associated transport block size, in CSI reference resources these united informations of PDSCH transmission can with signaling,
Additionally:
2) modulation scheme CQI sequence number carry out characterizing and
3) united information comprising transport block size and modulation scheme being used in reference resources, efficient channel produced by it is compiled
Bit rate, is the close efficient channel code rate of the most probable that can be characterized by CQI sequence number.When this connection that there is more than one
Conjunction information, when they can produce the most close efficient channel code rate characterized by CQI sequence number, then uses and has
The united information of little transport block size.
Each CQI sequence number is corresponding a kind of modulation system and transport block size, transport block size and Physical Resource Block number (the
Number of Physical resource block, is called for short NPRB) have a corresponding relation determined, according to transport block size and
The big I calculation code speed of NPRB.
LTE-A (Long-Term EvolutionAdvance, advanced long-term evolution system) introduces Relay (relaying) to be increased and covers
Lid, improves cell edge throughput.Relay is broadly divided into 3 classes: L1 Relay, L2 Relay and L3 Relay.L1 Relay
It it is a repeater strengthened, it is achieved the amplification forwarding function of physical layer；L2 Relay realizes decoding forwarding capability, forwards PDCP
(Packet Data Convergence Protocol, packet data convergence protocol) PDU (Packet Data Unit, packet count
According to unit), RLC (Radio Link Control, wireless spread-spectrum technology), PDU, MAC (MediaAccess Control, matchmaker
Body Access Control) PDU and transmission block, simpler than the base station of wireless backhaul, cheap, but more complicated than repeater, from association
View is functionally said, layer 2 relay node (Relay Node, referred to as RN) has certain resource allocation function, but the most complete
Layer three resource management function；L3 Relay is the base station of a wireless backhaul, contains 3 complete layer protocols, forwards IP bag.
At present, Type1 Relay is defined at 3GPP (3rd Generation Partnership Project, third generation partner program)
(layer three Relay) and Type2 relay (layer 2Relay).Type 1 Relay has characteristics that as controlling community, often
Individual Type 1Relay has independent community ID；The community ID of Type1 Relay is different from the community ID of own base station；Type1 Relay
There is scheduling of resource and HARQ (Hybrid Automatic Repeat Request, hybrid automatic repeat-request) function；For
R8 terminal, Type 1 Relay behaves like a base station；For LTE-A terminal, Type 1 Relay is likely to be of and compares R8
The performance enhancement that base station is more advanced.At present, 3GPP has been completed the backhaul return link design of Type I Relay.Its
The multiplex mode etc. of of the design discussion of middle return link to the effect that R-PDCCH relaying Physical Downlink Control Channel.Right
In R-PDCCH, resource distribution can be distributed or centralized, and multiplex mode can support frequency division multiplexing purely also
Can support that time division multiplex adds frequency division multiplexing.
The cqi definition occurred in LTE is various, according to different principles, can be divided by CQI:
1, it is divided into wideband CQI and subband CQI according to Measurement bandwidth:
Wideband (broadband) CQI refers to that the channel status to all of subband (subband) indicates, and that obtain is subband
The CQI information of set S；
The subband CQI pointer CQI information to each subband.LTE is according to different system bandwidths, and effective bandwidth is corresponding
Resource Block (RB:Resource Block) divide into several RB groups, each RB group referred to as subband, i.e. subband.
Subband CQI can be divided into again full subband CQI and Best (optimum) M CQI: full subband CQI reports institute
There is the CQI information of subband；Best M CQI is to select M subband from sets of subbands S, reports the CQI of this M subband
Information, and report the positional information of M subband simultaneously.
2, according to code stream number be divided into single current CQI and double fluid CQI:
Single current CQI: be applied to single-antenna transmission port 0, port 5, transmitting diversity, the closed loop space of MU-MIMO, RI=I
Multiplexing, now UE reports the CQI information of single code stream；
Double fluid CQI: be applied to Closed-Loop Spatial Multiplexing pattern.For Open-Loop Spatial Multiplexing pattern, owing to channel condition information is unknown,
And in precoding, double fluid characteristic has been carried out equilibrium treatment, therefore under Open-Loop Spatial Multiplexing, the CQI of 2 code streams is equal.
3, it is divided into absolute value CQI and differential CQI according to CQI method for expressing
The CQI index represented with 4bit in absolute value CQI i.e. table 1；
The i.e. differential CQI of Differemial (difference) CQI, the CQI index represented with 2bit or 3bit；Differential CQI is divided into again
2nd code stream is relative to the 1st differential CQI of code stream, the subband CQI differential CQI relative to subband CQI.
4, it is divided into wideband CQI, UE selected (selecting) (subband CQI), High layer according to CQI reporting schemes
Configured (high-rise configuration) (subband CQI)
Wideband CQI refers to the CQI information of subband set S；
UE selected (subband CQI) i.e. Best M CQI, the CQI information of M subband selected by feedback, goes up simultaneously
Report the position of M subband；
High layer configured (subband CQI) the most full subband CQI, for one CQI of each subband feedback
Information.
High layer configured and UE selected is all the feedback system of subband CQI, under non-periodic feedback pattern, this
The subband cause not of uniform size of two kinds of feedback system definition；Under UE selected pattern, also define the size of M.
In LTE system, ACK/NACK response message row physically controls channel (PUCCH:Physical Uplink Control)
On with form 1/1a/1b (PUCCH format (form) 1/1a1/b) transmit, if terminal UE need send upstream data,
Row shares channel (Physical Uplink Shared Channel is called for short PUSCH) upper transmission, CQI/PMI the most physically
Can be periodically to feed back with the feedback of RI, it is also possible to be acyclic feedback, concrete feedback such as table 2 be (the most anti-
Present the uplink physical channel corresponding with aperiodicity feedback) shown in.
Table 2
| Scheduling method | Periodically CQI channel | Aperiodicity CQI channel |
| Frequency non-selective | PUCCH | |
| Frequency selectivity | PUCCH | PUSCH |
Wherein, for CQI/PMI and RI of periodic feedback, if UE need not send upstream data, then the cycle is anti-
CQI/PMI and RI of feedback transmits with form 2/2a/2b (PUCCH format2/2a/2b) on PUCCH, if UE needs
When sending upstream data, then CQI/PMI and RI transmits on PUSCH；CQI/PMI and RI for aperiodicity feedback
For, only transmit on PUSCH.
Following three kinds of downlink physical control channels defined in version 8 (Release 8) standard of Long Term Evolution: physical down controls
Format indication channel (Physical Control Format Indicator Channel, referred to as PCFICH), physical mixed weigh automatically
(Physical Hybrid Automatic Retransmission Request Indicator Channel is referred to as to pass request instruction channel
And Physical Downlink Control Channel (Physical Downlink Control Channel, referred to as PDCCH) PHICH).Wherein
PDCCH controls information (Downlink Control Information, referred to as DCI) for bearing downlink, including: upper and lower
Row schedule information, and uplink power control information.The form (DCI format) of DCI is divided into following several: DCI format 0,
DCI format 1、DCI format 1A、DCI format 1B、DCI format 1C、DCI format 1D、DCI format 2、
DCI format 2A, DCI format 3 and DCI format 3A etc.；The transmission mode 5 wherein supporting MU-MIMO make use of
The Downlink Control Information of DCI format 1D, and the descending power territory (Downlink power offset field) in DCI format 1D
δpower-offsetThe information of (i.e.-10log10 (2)) is halved for the instruction of power a to(for) user in MU-MIMO pattern,
Because MU-MIMO transmission pattern 5 supports the MU-MIMO transmission of two users, by this descending power territory,
MU-MIMO transmission pattern 5 can support SU-MIMO pattern and the switching at runtime of MU-MIMO pattern, but no matter exists
One UE is only supported a transmission flowed by SU-MIMO pattern or this DCI format of MU-MIMO pattern, although LTE
Release 8 supports the single user transmission of most two streams in transmission mode 4, but the switching being because between transmission mode can only
It is semi-static, so the switching at runtime of single user multiple stream transmission and multi-user transmission can not be accomplished in LTE version 8.
In the version 9 (Release 9) of LTE, in order to strengthen descending multi-antenna transmission, introduce double fluid Wave beam forming
(Beamforming) transmission mode, is defined as transmission mode 9, and Downlink Control Information add DCI format 2B with
Support this transmission mode, DCI format 2B has a scrambler sequence identity (scrambling identity is called for short SCID)
Identification bit to support two different scrambler sequence, the two scrambler sequence can be distributed to different user by eNB, with
The one multiple user of resource multiplex.It addition, when only one of which transmission block enables when, the transmission block pair of non-enable (Disabled)
New data instruction (NDI) bit answered also is used to refer to antenna port during single layer transmission.
It addition, in the version 10 of LTE, in order to further enhance the transmission of descending multiple antennas, add new closed loop space
The transmission mode of multiplexing, is defined as transmission mode 10, and this transmission mode both can support Single User MIMO, can support again
Multi-user MU-MIMO, and can support that both switching at runtime, the most this transmission mode also support the transmission of 8 antennas.
This new transmission mode has determined that to come with demodulation pilot tone (Demodulation Reference Signal, referred to as DMRS)
The pilot tone called as solution, UE need to determine the position of pilot tone, just can do the estimation of channel and interference in pilot tone.
In R10 version, UE being arranged to based on following a kind of biography by high-level signaling semi-static (semi-statically)
Defeated pattern (transmission mode), according to the instruction of PDCCH of the search volume of subscriber equipment proprietary (UE-Specific)
Receive PDSCH data to transmit:
Pattern 1: single antenna port；Port 0 (Single-antenna port；port 0)
Pattern 2: launch diversity (Transmit diversity)
Pattern 3: Open-Loop Spatial Multiplexing (Open-loop spatial multiplexing)
Pattern 4: Closed-Loop Spatial Multiplexing (Closed-loop spatial multiplexing)
Pattern 5: multi-user's multiple-input and multiple-output (Multi-userMIMO)
Pattern 6: closed loop Rank=1 precoding (Closed-loop Rank=1 precoding)
Mode 7: single antenna port；Port 5 (Single-antenna port；port 5)
Pattern 8: stream transmission, i.e. dual-stream beamforming
Pattern 9: the Closed-Loop Spatial Multiplexing of most 8 layers.
In R10 version, newly increase transmission mode 9 and CSI-RS (Channel-State Information-Reference
Symbol, channel condition information reference marks), transmission mode 9 is to carry out channel measurement based on CSI-RS, thus is calculated
CQI.Other transmission modes carry out channel measurement based on CRS (Common Reference signal, public reference signal), from
And calculate CQI.In R10 version, too increase some CSI-RS parameters accordingly to characterize its attribute.In contrast R8
CRS, some parameter is similar, and some parameter is newly-increased.As CSI-RS port number also has similar CRS in R8
Port number, CSI-RS sub-frame configuration cycle parameter is then newly-increased.Following parameter is that community is proprietary and configured by high-level signaling,
For the definition of CSI-RS, including: CSI-RS port number, CSI-RS configuration, CSI-RS sub-frame configuration parameter ICSI-RS,
Reference PDSCH for CSI feedback is launched the hypothesis of power by sub-frame configuration cycle T CSI-RS, subframe deviator and control UE.
In R10, for transmission mode 9 because introduce " dicode this " or " double PMI (Pre-coding Matrix Indicator,
With encoder matrix index) " new ideas, so needing to feed back two PMI；For 8 antennas, the letter in a PMI instruction broadband
Channel state information, the channel condition information of the 2nd PMI instruction subband, only obtain two PMI and just can obtain complete precoding
Matrix information, wherein subband includes the situation in broadband；For 2 antennas and 4 antennas, a PMI instruction is unit matrix, the
Two PMI are equivalent to the PMI of former R8 agreement.
For the new transmission mode 9 of R10 agreement, CQI determines and calculating lacks consideration, i.e. and do not take into account R-PDCCH and take
Reference resources how to process, if there is the situation of the reference resources that R-PDCCH takies, it is impossible to accurately calculate CQI
Value, thus cause transmission mode 9 that CRS or CSI-RS cannot be used exactly to realize channel measurement, namely transmitting
Channel quality information accurately cannot be obtained when pattern 9, will seriously reduce motility and the performance indications of system.
Summary of the invention
Present invention is primarily targeted at acquisition methods and the device that a kind of channel quality indication (CQI) information is provided, to solve existing system
Middle via node cannot obtain channel quality indication (CQI) information accurately because not accounting for the existence of R-PDCCH, causes system
The problem that motility and performance reduce.
According to an aspect of the invention, it is provided the acquisition methods of a kind of channel quality indication (CQI) information, including: via node connects
Receive the channel condition information CSI reference resources that base station sends；The channel condition information ginseng that via node is corresponding to CSI reference resources
Examine symbol CSI-RS and/or public reference signal CRS to measure；According to measuring the result obtained, via node determines that CSI joins
Examine the CQI value that resource is corresponding, where it is assumed that relaying Physical Downlink Control Channel R-PDCCH does not take CSI reference resources
In resource element；Or, it is assumed that the resource element being configured without in CSI reference resources gives relaying Physical Downlink Control Channel
R-PDCCH；CQI value is reported base station by via node.
Assume to relay Physical Downlink Control Channel R-PDCCH not take the resource element of CSI reference resources and refer to: if
R-PDCCH takies the resource element in CSI reference resources, then arrange data when determining CQI value and occupy R-PDCCH and account for
Resource element.
Assume that the resource element being configured without in CSI reference resources refers to relaying Physical Downlink Control Channel R-PDCCH: if
It is configured with the resource element in CSI reference resources to R-PDCCH, then arranges when determining CQI value and be configured without CSI with reference to money
Resource element in source is to R-PDCCH.
Via node includes according to the step measuring the CQI value that the result obtained determines that CSI reference resources is corresponding: judge relaying joint
Whether the transmission mode of point is transmission mode 9, and, it is judged that whether allocating pre-coding matrix instruction PMI/ order indicates RI in base station,
And, it is judged that whether CSI-RS port number is equal to 1；If the transmission mode of via node is not transmission mode 9, or,
Base station do not configure PMI/RI or, CSI-RS port number be equal to 1, then via node is according to the measurement obtaining CRS measurement
Result determines the CQI value of data；If the transmission mode of via node is transmission mode 9, and base station is configured with PMI/RI,
And CSI-RS port number is more than 1, then via node determines data according to the measurement result obtaining CSI-RS measurement
CQI value.
Before via node receives the channel condition information CSI reference resources that base station sends, obtaining of above-mentioned channel quality indication (CQI) information
Access method is further comprising the steps of: arrange one group of downlink physical Resource Block on frequency domain as CSI reference resources, wherein, descending
Physical Resource Block is corresponding on the corresponding frequency band of CQI value；Time domain arranges a descending sub frame as CSI reference resources；And
And define CSI reference resources according to any RI and PMI on transport layer territory, wherein, CQI value is with RI and PMI as condition.
After CQI value is reported base station by via node, the acquisition methods of above-mentioned channel quality indication (CQI) information also includes: base station root
Transport block size and modulation system is determined according to the CQI value received.
According to a further aspect in the invention, it is provided that the acquisition device of a kind of channel quality indication (CQI) information, including: receive unit,
For receiving the channel condition information CSI reference resources that base station sends；Measuring unit, for the letter corresponding to CSI reference resources
Channel state information reference marks CSI-RS and/or public reference signal CRS measure；Determine unit, for according to measuring
To result determine the CQI value that CSI reference resources is corresponding, where it is assumed that relaying Physical Downlink Control Channel R-PDCCH do not have
There is the resource element taken in CSI reference resources, or, it is assumed that the resource element being configured without in CSI reference resources gives relaying
Physical Downlink Control Channel R-PDCCH；Transmission unit, for reporting base station by CQI value.
Assume to relay Physical Downlink Control Channel R-PDCCH not take the resource element of CSI reference resources and refer to: if
R-PDCCH takies the resource element in CSI reference resources, then arrange data when determining CQI value and occupy R-PDCCH and account for
Resource element；Assume that the resource element being configured without in CSI reference resources is to relaying Physical Downlink Control Channel R-PDCCH
Refer to: if the resource element being configured with in CSI reference resources is to R-PDCCH, then arrange when determining CQI value and be configured without
Resource element in CSI reference resources is to R-PDCCH.
Determine that unit includes: judge module, whether be transmission mode 9 for judging the transmission mode of via node, and, it is judged that
Whether allocating pre-coding matrix instruction PMI/ order indicates RI in base station, and, it is judged that whether CSI-RS port number is equal to 1；Determine
Module, for not being transmission mode 9 in the transmission mode of via node, or, base station do not configure PMI/RI or, CSI-RS
When port number is equal to 1, determine the CQI value of data according to the measurement result that CRS measurement is obtained；Or at via node
Transmission mode be transmission mode 9, and base station is configured with PMI/RI, and CSI-RS port number more than 1 time, according to right
The measurement result that CSI-RS measurement obtains is to determine the CQI value of data.
The acquisition device of channel quality indication (CQI) information also includes: arrange unit, for arranging one group of downlink physical resource on frequency domain
Block is as CSI reference resources, and wherein, downlink physical Resource Block is corresponding on the corresponding frequency band of CQI value；Time domain arranges one
Individual descending sub frame is as CSI reference resources；And on transport layer territory, define CSI reference resources according to any RI and PMI,
Wherein, CQI value is with RI and PMI as condition.
By the present invention, under conditions of not increasing any system complexity and signaling consumption and not affecting system compatibility,
Assume that relaying Physical Downlink Control Channel R-PDCCH does not take the resource element of CSI reference resources to carry out CQI value really
Fixed, or assume resource element that base station is configured without in CSI reference resources to R-PDCCH to carry out the determination of CQI value,
So that it is determined that be applicable to the resource element number calculated for CQI of overwhelming majority situation, solve relaying joint in existing system
Point cannot obtain channel quality indication (CQI) information accurately because not accounting for the existence of R-PDCCH, cause the motility of system with
The problem that performance reduces, and then reached accurate acquisition channel quality indication (CQI) information, improve system flexibility and the effect of performance.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the present invention shows
Meaning property embodiment and explanation thereof are used for explaining the present invention, are not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the preferred structure block diagram of the acquisition device of channel quality indication (CQI) information according to embodiments of the present invention；
Fig. 2 is the another kind of structured flowchart of the acquisition device of channel quality indication (CQI) information according to embodiments of the present invention；
Fig. 3 is the preferred flow charts of the acquisition methods of channel quality indication (CQI) information according to embodiments of the present invention；
Fig. 4 is the another kind of flow chart of the acquisition methods of channel quality indication (CQI) information according to embodiments of the present invention；
Fig. 5 is another structured flowchart of the acquisition device of channel quality indication (CQI) information according to embodiments of the present invention.
Detailed description of the invention
Below with reference to accompanying drawing and describe the present invention in detail in conjunction with the embodiments.It should be noted that in the case of not conflicting,
Embodiment in the application and the feature in embodiment can be mutually combined.
Embodiment 1
Fig. 1 is the preferred structure block diagram of the acquisition device of via node channel quality indication (CQI) information according to embodiments of the present invention, should
Device includes: the reception unit 102, the measuring unit 104 that are sequentially connected with, determine unit 106 and transmission unit 108, wherein:
Receive unit 102 and receive the channel condition information CSI reference resources that base station sends；
Measuring unit 104 is to channel condition information reference marks CSI-RS corresponding to CSI reference resources and/or public reference signal
CRS measures；
Determine that unit 106 determines, according to measuring the result obtained, the CQI value that CSI reference resources is corresponding, where it is assumed that relaying thing
Reason down control channel R-PDCCH does not take the resource element in CSI reference resources；Or assume to be configured without described CSI
Resource element in reference resources gives relaying Physical Downlink Control Channel R-PDCCH；
CQI value is reported base station by transmission unit 108.
In the preferred embodiment, do not increasing any system complexity and signaling consumption and do not affecting the bar of system compatibility
Under part, it is assumed that relaying Physical Downlink Control Channel R-PDCCH does not take the resource element of CSI reference resources to carry out CQI
The determination of value, or assume the resource element that is configured without in described CSI reference resources of base station to R-PDCCH to carry out CQI
The determination of value, so that it is determined that be applicable to the resource element number calculated for CQI of overwhelming majority situation, solves existing system
In system, via node cannot obtain channel quality indication (CQI) information accurately because not accounting for the existence of R-PDCCH, causes system
Motility and the problem that reduces of performance, and then reached accurate acquisition channel quality indication (CQI) information, improved system flexibility and property
The effect of energy.
Based on the preferred structure block diagram shown in Fig. 1, Fig. 2 illustrates the another kind of structure of the acquisition device of channel quality indication (CQI) information
Block diagram, this device also includes, connect reception unit 102 arranges unit 110.
Wherein it is determined that unit 106 assumes that relaying Physical Downlink Control Channel R-PDCCH does not take the resource of CSI reference resources
Element refers to: if R-PDCCH takies the resource element in CSI reference resources, then arranges data when determining CQI value and accounts for
The resource element taken with R-PDCCH；Assume that the resource element being configured without in described CSI reference resources is under relaying physics
Row controls channel R-PDCCH and refers to: if the resource element being configured with in described CSI reference resources is to described R-PDCCH,
The resource element being configured without in described CSI reference resources is then set when determining CQI value to described R-PDCCH.At this preferably
In embodiment, the resource element of the CSI reference resources taken by R-PDCCH is set to the money of the CSI reference resources that data take
Source element determines CQI value, or base station is set to base station not to RN to the resource element of RN configuration CSI reference resources
The resource element of configuration CSI reference resources usually determines CQI value, it is ensured that the accuracy of calculating.
Based on Fig. 2, the present embodiment provides one preferably to determine unit 106 structure, and this determines that unit 106 includes: connection judgment
Module 1061 cover half block 1062 really, it is judged that module 1061 connects measuring unit 104, and wherein judge module 1061 judges described
Whether the transmission mode of via node is transmission mode 9, and, it is judged that whether allocating pre-coding matrix indicates PMI/ in described base station
Order instruction RI, and, it is judged that whether CSI-RS port number is equal to 1；Determine the module 1062 transmission at described via node
Pattern is not transmission mode 9, or, described base station do not configure described PMI/RI or, described CSI-RS port number be equal to 1
Time, the CQI value of described data is determined according to the measurement result that described CRS measurement is obtained；Or determine that module 1062 exists
The transmission mode of described via node is transmission mode 9, and described base station is configured with described PMI/RI, and described CSI-RS
When port number is more than 1, determine the CQI value of described data according to the measurement result that described CSI-RS measurement is obtained.At this
In preferred embodiment, CRS or CSI-RS is measured obtains CQI value and is distinguished, it is ensured that calculate CQI value
Correctness.
Preferably, unit 110 is set one group of downlink physical Resource Block is set on frequency domain as CSI reference resources, wherein, under
Row Physical Resource Block is corresponding on the corresponding frequency band of CQI value；Time domain arranges a descending sub frame as CSI reference resources；
Defining described CSI reference resources according to any RI and PMI on transport layer territory, wherein, described CQI value is with described RI
It is condition with described PMI.In the preferred embodiment, CSI reference resources is configured, it is ensured that in different situations,
All CQI can be calculated accurately.
Preferably, after described CQI value is reported described base station by described via node, described base station is according to the CQI received
Value determines transport block size and modulation system.
Embodiment 2
Fig. 3 is the preferred flow charts of the acquisition methods of channel quality indication (CQI) information according to embodiments of the present invention, and the method includes:
S302, via node receives the channel condition information CSI reference resources that base station sends；
S304, via node is to channel condition information reference marks CSI-RS corresponding to CSI reference resources and/or common reference letter
Number CRS measures；
S306, via node determines, according to measuring the result obtained, the CQI value that CSI reference resources is corresponding, where it is assumed that relaying
Physical Downlink Control Channel R-PDCCH does not take the resource element in CSI reference resources, or, it is assumed that it is configured without described
Resource element in CSI reference resources gives relaying Physical Downlink Control Channel R-PDCCH；
S308, CQI value is reported base station by via node.
In the preferred embodiment, do not increasing any system complexity and signaling consumption and do not affecting the bar of system compatibility
Under part, it is assumed that relaying Physical Downlink Control Channel R-PDCCH does not take the resource element of CSI reference resources to carry out CQI
The determination of value, or assume the resource element that is configured without in described CSI reference resources of base station to R-PDCCH to carry out CQI
The determination of value, so that it is determined that be applicable to the resource element number calculated for CQI of overwhelming majority situation, solves existing system
In system, via node cannot obtain channel quality indication (CQI) information accurately because not accounting for the existence of R-PDCCH, causes system
Motility and the problem that reduces of performance, and then reached accurate acquisition channel quality indication (CQI) information, improved system flexibility and property
The effect of energy.
According to said method, the hypothesis relaying Physical Downlink Control Channel R-PDCCH of the present embodiment does not take CSI reference resources
Resource element refer to: if R-PDCCH takies the resource element in CSI reference resources, then arrange when determining CQI value
Data occupy the resource element that R-PDCCH takies.
Assume what the resource element being configured without in described CSI reference resources referred to relaying Physical Downlink Control Channel R-PDCCH
It is: if the resource element being configured with in described CSI reference resources is to described R-PDCCH, then arranges when determining CQI value and do not have
Configure the resource element in described CSI reference resources to described R-PDCCH.In the preferred embodiment, R-PDCCH is accounted for
The resource element of CSI reference resources be set to the resource element of the CSI reference resources that (or being equivalent to) data take and usually determine
CQI value, or base station is set to base station not to RN configuration CSI reference to the resource element of RN configuration CSI reference resources
The resource element of resource usually determines CQI value, it is ensured that the accuracy determined.
The present embodiment also provides for a kind of preferred via node and determines and occupy in CSI reference resources according to measuring the result that obtains
The step of the CQI value of CSI reference resources, this step includes: whether the transmission mode judging described via node is transmission mode 9,
And, it is judged that whether allocating pre-coding matrix instruction PMI/ order indicates RI in described base station, and, it is judged that CSI-RS port number
Whether equal to 1；If the transmission mode of described via node is not transmission mode 9, or, described base station does not configures described PMI/RI
Or, described CSI-RS port number is equal to 1, and the most described via node comes according to the measurement result obtaining described CRS measurement
Determine the CQI value of data；If the transmission mode of described via node is transmission mode 9, and described base station is configured with described
PMI/RI, and described CSI-RS port number is more than 1, the most described via node is according to obtaining described CSI-RS measurement
Measurement result determines the CQI value of data.In the preferred embodiment, measure to obtain CQI to CRS or CSI-RS
Value is distinguished, it is ensured that calculate the correctness of CQI value.
In this enforcement, before via node receives the channel condition information CSI reference resources that base station sends, preferred channel quality
At least one the acquisition methods of instruction information is further comprising the steps of: arrange one group of downlink physical Resource Block on frequency domain as CSI
Reference resources, wherein, downlink physical Resource Block is corresponding on the corresponding frequency band of CQI value；Time domain arranges a descending sub frame
As CSI reference resources；Transport layer territory defines described CSI reference resources according to any RI and PMI, wherein, described
CQI value is with described RI and described PMI as condition.In the preferred embodiment, CSI reference resources is configured, it is ensured that
In different situations, all CQI can be calculated accurately.
In the present embodiment, after CQI value is reported described base station by via node, obtaining of preferred channel quality indication (CQI) information
Access method also includes: base station determines transport block size and modulation system according to the CQI value received.In the preferred embodiment,
Improve system flexibility and performance further.
Embodiment 3
Fig. 4 is the another kind of flow chart of the acquisition methods of channel quality indication (CQI) information according to embodiments of the present invention, and the method includes:
S401, base station eNodeB sends CSI-RS and CRS to via node (Relay Node, referred to as RN)；
S403, via node carries out channel measurement according to CSI-RS or CRS；
S405, via node determines CSI reference resources, and determines CQI value on CSI reference resources according to channel measurement,
Further, this CQI acquisition methods includes, when determining CQI value, it is assumed that R-PDCCH (Relay Physical Downlink Control
Channel) resource of the CSI reference resources that relaying Physical Downlink Control Channel does not use；Or, it is assumed that it is configured without described
Resource element in CSI reference resources gives relaying Physical Downlink Control Channel R-PDCCH；
S407, CQI value is reported eNodeB by via node.
Wherein, on frequency domain, CSI reference resources is defined with one group of downlink physical Resource Block, and downlink physical Resource Block corresponds to
On the corresponding frequency band of source CQI value；In time domain, CSI reference resources defines with a descending sub frame；On transport layer territory,
On transport layer territory, CSI reference resources is defined by any RI and PMI, and CQI is with described RI and PMI as condition
's.It is to say, on frequency domain, CSI reference resources represents that CQI measures in certain section of bandwidth and gets；In time domain,
CSI reference resources represents to measure on certain descending sub frame and gets, and wherein, descending sub frame is invalid in some cases.When
When the descending sub frame at CSI reference resources place is invalid, then the sub-frame of uplink in subframe n does not report CQI；Concrete, the cycle
During feedback CQI, its descending sub frame nCQI_ref is at least 4.It is to say, CQI is to survey before at least 4 descending sub frames
Measure；During non-periodic feedback, CQI is to measure to get on the descending sub frame that DCI format 0 triggers；During non-periodic feedback,
CQI is that subframe measurement after the subframe that Random Access Response Grant triggers gets；On domain transmission,
CQI is calculated by PMI and RI and gets.
And in CSI reference resources, via node should do it is assumed hereinafter that, calculate CQI sequence number:
1) front 3 OFDM symbol are used for control signal；
2) there is no resource particle for primary/secondary synchronizing signal or Physical Broadcast Channel (PBCH:Physical Broadcast Channel)；
3) non-multicast Broadcast Single Frequency network (MBSFN:Multicast/Broadcast Single Frequency Network) subframe
CP length；
4) redundancy versions 0；
5) ratio between PDSCH EPRE and CSI-RS (is increased) newly；
6) it is currently configured transmission mode (may be for default mode), the transmission plan of PDSCH according to via node；
The PDSCH EPRE ratio relative to community proprietary RS EPRE, does not consider ρA。ρAShould be hypothesis below:
7) if via node is configured to the transmission mode 2 with 4 cell-specific antenna ports, or there are 4 cell-specific
When the transmission mode 3 of antenna port and the RI value associated are 1, for any modulation scheme,
ρA=PA+Δoffset+10log10(2)[dB]；Otherwise, for any modulation scheme and any number of plies,
ρA=PA+Δoffset[dB].Wherein, PA represents each resource element energy of data and each resource element energy of CRS
The ratio (The ratio ofPDSCH EPRE to cell-specific RS EPRE) of amount, offset ΔoffsetConfigured by top signaling
Parameter nomPDSCH-RSs-EPRE-Offset give.
In the present embodiment, due to needs, real original ratio carried out an adjustment, the adjusted value after being adjusted.Therefore,
PA is the ratio before adjusting, ρA=PA+ΔoffsetIt is the ratio after adjusting.
When the transmission mode of described via node is not transmission mode 9, or eNodeB (base station) is configured without PMI/RI, or
When person's CSI-RS port number is equal to 1, via node determines the CQI value of data based on the measurement result measuring CRS,
When the transmission mode of described via node is transmission mode 9, and eNodeB is configured with PMI/RI and CSI-RS port number
During more than 1, via node determines the CQI value of data based on the measurement result measuring CSI-RS.
Owing to not increasing any system complexity and signaling consumption, determine that current feedback model is by the high-level signaling configured
Either with or without the feedback of PMI/RI, support PMI/RI feedback and do not had PMI/RI to feed back two kinds of forms, thus having compensate for existing
The deficiency of technology.On the other hand, owing to being efficiently used the parameter of CSI-RS in R10, good compatibility is maintained.
Based on said method, the present embodiment four kinds of examples of offer are next, and the present invention is described further.
Example 1:
Assuming that base station is configured with transmission mode 9 to certain RN, base station is configured with 8 CSI-RS ports, CSI-RS to this RN
Port numbers is from 15 to 22, and base station has been configured with PMI/RI feedback.From realize angle, base station up-downgoing generally according to
FDD (Frequency Division Duplexing, FDD) mode is operated.
Under above-mentioned assumed condition, calculate CQI value as follows:
Base station eNodeB sends CSI-RS to via node (Relay Node)；
Via node (Relay Node) carries out channel measurement according to CSI-RS；
Via node (Relay Node) determines CSI reference resources, and via node determines CSI reference resources according to channel measurement
Upper CQI value.
Wherein it is determined that CQI value needs to assume R-PDCCH (Relay Physical Downlink Control Channel) relaying
The resource element of the CSI reference resources that Physical Downlink Control Channel does not use.Now, CSI reference resources there is R-PDCCH
The resource element used, need to assume the when of now calculating CQI resource element that these R-PDCCH use not by
R-PDCCH takies, but taken up by data.
Example 2:
Assume that base station is configured with transmission mode 9 to certain RN, and base station configuration RN does not has PMI/RI to feed back.From realize
Angle, base station up-downgoing is operated generally according to TDD mode.
Under above-mentioned assumed condition, calculate CQI value as follows:
Base station eNodeB sends CRS to via node (Relay Node)；
Via node (Relay Node) carries out channel measurement according to CRS；
Via node (Relay Node) determines CSI reference resources, and terminal determines CQI on CSI reference resources according to channel measurement
Value.
Wherein determine that CQI value needs to assume R-PDCCH (Relay Physical Downlink Control Channel) relaying thing
The resource element of the CSI reference resources that reason down control channel does not use.Now, CSI reference resources there is R-PDCCH
The resource used, needs to assume that resource element that these R-PDCCH use is not by R-PDCCH when of now calculating CQI
Take, but taken up by data.
Example 3
Assuming that base station is configured with transmission mode 9 to certain RN, base station is configured with 8 CSI-RS ports, CSI-RS to this RN
Port numbers is from 15 to 22, and base station has been configured with PMI/RI feedback.From realize angle, base station up-downgoing generally according to
FDD (Frequency Division Duplexing, FDD) mode is operated.
Under above-mentioned assumed condition, calculate CQI value as follows:
Base station eNodeB sends CSI-RS to via node (Relay Node)；
Via node (Relay Node) carries out channel measurement according to CSI-RS；
Via node (Relay Node) determines CSI reference resources, and via node is true according to described CSI-RS channel measurement
Determine CQI value on CSI reference resources.
Wherein it is determined that CQI value needs the resource element assuming to be configured without in described CSI reference resources to relaying physical down
Control channel R-PDCCH.Now, if the resource element that base station is configured with in described CSI reference resources is to described R-PDCCH,
Then when determining CQI value, base station arranges the resource element being configured without in described CSI reference resources to described R-PDCCH.
Example 4
Assume that base station is configured with transmission mode 9 to certain RN, and base station configuration RN does not has PMI/RI to feed back.From realize
Angle, base station up-downgoing is operated generally according to TDD mode.
Under above-mentioned assumed condition, calculate CQI value as follows:
Base station eNodeB sends CRS to via node (Relay Node)；
Via node (Relay Node) carries out channel measurement according to CRS；
Via node (Relay Node) determines CSI reference resources, and terminal determines CSI according to the channel measurement of described CRS
CQI value on reference resources.
Wherein it is determined that CQI value needs the resource element assuming to be configured without in described CSI reference resources to relaying physical down
Control channel R-PDCCH.Now, if the resource element that base station is configured with in described CSI reference resources is to described R-PDCCH,
Then when determining CQI value, base station arranges the resource element being configured without in described CSI reference resources to described R-PDCCH.
Example 5
Assuming that base station is configured with transmission mode 9 to certain RN, base station is configured with 8 CSI-RS ports, CSI-RS to this RN
Port numbers is from 15 to 22, and up-downgoing is carried out according to FDD mode.
Under above-mentioned assumed condition, calculate CQI value as follows:
Base station eNodeB sends CSI-RS to via node (Relay Node)；
Via node (Relay Node) carries out channel measurement according to CSI-RS；
Via node (Relay Node) determines CSI reference resources, and via node determines CSI reference resources according to channel measurement
Upper CQI value.Further, CSI reference resources does not has the resource element that R-PDCCH occupies.
Wherein it is determined that CQI value needs to assume R-PDCCH (Relay Physical Downlink Control Channel) relaying
The resource element of the CSI reference resources that Physical Downlink Control Channel does not use.Now, if CSI reference resources does not has
, the most there is not the condition of described hypothesis in the resource element that R-PDCCH occupies.
Example 6:
Assuming that base station is configured with transmission mode 9 to certain RN, base station is configured with to this RN does not has PMI/RI to feed back, up-downgoing
Carry out according to TDD mode.
Under above-mentioned assumed condition, calculate CQI value as follows:
Base station eNodeB sends CRS to via node (Relay Node)；
Via node (Relay Node) carries out channel measurement according to CRS；
Via node (Relay Node) determines CSI reference resources, and terminal determines CQI on CSI reference resources according to channel measurement
Value.Further, CSI reference resources does not has the resource element that R-PDCCH occupies.
Wherein it is determined that CQI value needs to assume R-PDCCH (Relay Physical Downlink Control Channel) relaying
The resource of the CSI reference resources that Physical Downlink Control Channel does not use.Now, if CSI reference resources does not has R-PDCCH
, the most there is not described assumed condition in the resource element occupied.
In a word, the computational methods of CQI take into full account the impact that CQI is calculated by R-PDCCH here, it is ensured that demodulating data
The accuracy of CQI.Specifically, it is based on simplest scene that CQI calculates, and that gets rid of R-PDCCH the most as far as possible reports CQI
Impact, base station can be according to present sub-frame either with or without R-PDCCH scheduling when, and it is suitable to carry out the MCS of data
Adjust, it is ensured that the adaptive performance of system link and effect.
Embodiment 4
Fig. 5 is another structured flowchart of the acquisition device of channel quality indication (CQI) information according to embodiments of the present invention, this device bag
Including: the base station eNodeB 502 being sequentially connected with and via node 504, wherein via node 504 includes connecting base station eNodeB 502
Means for channel measurement 5041 and CQI calculate device 5042, and connect CQI calculate device 5042 CQI resource determine dress
Put 5043.Wherein, means for channel measurement 5041 is used for carrying out channel measurement；CQI resource determines that device 5043 is for carrying out CSI
The determination of reference resources；CQI calculates device 5042 for the result according to channel measurement and the difference of CSI reference resources, calculating
The CQI value of data.
In this preferred embodiment, base station eNodeB 502 and via node 504 can perform the channel of each embodiment above-mentioned
The acquisition methods of quality indication (CQI) information, does not repeats them here.
As can be seen from the above description, present invention achieves following technique effect: do not increasing any system complexity
With signaling consumption and under conditions of not affecting system compatibility, use and assume that relaying Physical Downlink Control Channel R-PDCCH does not has
The resource element taking CSI reference resources is determined CQI value, it is determined that be applicable to calculating for CQI of overwhelming majority situation
Resource element number, solve via node in existing system and cannot obtain accurately because not accounting for the existence of R-PDCCH
Channel quality indication (CQI) information, cause the problem that the motility of system and performance reduce, and then reached accurate acquisition channel quality
Instruction information, improves system flexibility and the effect of performance.
Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general calculating
Device realizes, and they can concentrate on single calculating device, or is distributed on the network that multiple calculating device is formed,
Alternatively, they can realize with calculating the executable program code of device, it is thus possible to be stored in storing device
In perform by calculating device, and in some cases, can with the order being different from herein perform shown or described by step
Suddenly, or they are fabricated to respectively each integrated circuit modules, or the multiple modules in them or step are fabricated to single
Integrated circuit modules realizes.So, the present invention is not restricted to the combination of any specific hardware and software.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made, etc.
With replacement, improvement etc., should be included within the scope of the present invention.
Claims (7)
1. the acquisition methods of a channel quality indication (CQI) information, it is characterised in that including:
Via node receives the channel condition information CSI reference resources that base station sends；
Described via node is to channel condition information reference marks CSI-RS corresponding to described CSI reference resources and/or public
Reference signal CRS measures；
Described via node determines, according to the result that described measurement obtains, the CQI value that described CSI reference resources is corresponding, wherein,
Assume that relaying Physical Downlink Control Channel R-PDCCH does not take the resource element in described CSI reference resources；Or,
Assume that the resource element being configured without in described CSI reference resources is to relaying Physical Downlink Control Channel R-PDCCH；
Described CQI value is reported described base station by described via node；
Where it is assumed that relaying Physical Downlink Control Channel R-PDCCH does not take the resource element of described CSI reference resources
Refer to: if described R-PDCCH takies the resource element in described CSI reference resources, then set when determining CQI value
Put data and occupy the resource element that described R-PDCCH takies；Assume the resource being configured without in described CSI reference resources
Element refers to relaying Physical Downlink Control Channel R-PDCCH: if the resource element being configured with in described CSI reference resources
Element gives described R-PDCCH, then arrange when determining CQI value the resource element that is configured without in described CSI reference resources to
Described R-PDCCH.
Method the most according to claim 1, it is characterised in that the result that described via node obtains according to described measurement determines
The step of the CQI value that described CSI reference resources is corresponding includes:
Whether the transmission mode judging described via node is transmission mode 9, and, it is judged that whether described base station configures prelists
Code matrix instruction PMI/ order instruction RI, and, it is judged that whether CSI-RS port number is equal to 1；
If the transmission mode of described via node is not transmission mode 9, or, described base station does not configures described PMI/RI
Or, described CSI-RS port number is equal to 1, and the most described via node is according to the measurement knot obtaining described CRS measurement
Fruit determines the CQI value of data；
If the transmission mode of described via node is transmission mode 9, and described base station is configured with described PMI/RI, with
And described CSI-RS port number is more than 1, the most described via node is tied according to the measurement obtaining described CSI-RS measurement
Fruit determines the CQI value of data.
Method the most according to claim 1, it is characterised in that via node receives the channel condition information CSI that base station sends
Before reference resources, further comprising the steps of:
Arranging one group of downlink physical Resource Block on frequency domain as described CSI reference resources, wherein, described downlink physical provides
Source block is corresponding on the corresponding frequency band of described CQI value；
Time domain arranges a descending sub frame as described CSI reference resources；And
On transport layer territory according to any RI and PMI define described CSI reference resources, wherein, described CQI value with
Described RI and described PMI is condition.
Method the most according to claim 1, it is characterised in that described CQI value is reported described base station by described via node
Afterwards, also include:
Described base station determines transport block size and modulation system according to the CQI value received.
5. the acquisition device of a channel quality indication (CQI) information, it is characterised in that including:
Receive unit, for receiving the channel condition information CSI reference resources that base station sends；
Measuring unit, for channel condition information reference marks CSI-RS corresponding to described CSI reference resources and/or public affairs
Reference signal CRS measures altogether；
Determine unit, determine, for the result obtained according to described measurement, the CQI value that described CSI reference resources is corresponding, its
In, it is assumed that relaying Physical Downlink Control Channel R-PDCCH does not take the resource element in described CSI reference resources, or
Person, it is assumed that the resource element being configured without in described CSI reference resources gives relaying Physical Downlink Control Channel R-PDCCH；
Transmission unit, for reporting described base station by described CQI value；
Where it is assumed that relaying Physical Downlink Control Channel R-PDCCH does not take the resource element of described CSI reference resources
Refer to: if described R-PDCCH takies the resource element in described CSI reference resources, then set when determining CQI value
Put data and occupy the resource element that described R-PDCCH takies；Assume the resource being configured without in described CSI reference resources
Element refers to relaying Physical Downlink Control Channel R-PDCCH: if the resource element being configured with in described CSI reference resources
Element gives described R-PDCCH, then arrange when determining CQI value the resource element that is configured without in described CSI reference resources to
Described R-PDCCH.
Device the most according to claim 5, it is characterised in that described determine that unit includes:
Whether judge module, be transmission mode 9 for judging the transmission mode of described via node, and, it is judged that described base
Standing, whether allocating pre-coding matrix instruction PMI/ order indicates RI, and, it is judged that whether CSI-RS port number is equal to 1；
Determine module, be not transmission mode 9 for the transmission mode at described via node, or, described base station does not configures
Described PMI/RI or, when described CSI-RS port number is equal to 1, tie according to measurement that described CRS measurements is obtained
Fruit determines the CQI value of described data；Or the transmission mode at described via node is transmission mode 9, and described
Base station is configured with described PMI/RI, and when described CSI-RS port number is more than 1, measures according to described CSI-RS
The measurement result obtained is to determine the CQI value of described data.
Device the most according to claim 5, it is characterised in that also include arranging unit, for arranging under one group on frequency domain
Row Physical Resource Block is as described CSI reference resources, and wherein, described downlink physical Resource Block corresponds to described CQI value phase
On the frequency band answered；Time domain arranges a descending sub frame as described CSI reference resources；And root on transport layer territory
Defining described CSI reference resources according to any RI and PMI, wherein, CQI is with described RI and described PMI as condition.
Priority Applications (1)
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| CN201110112852.6A CN102170334B (en) | 2011-05-03 | The acquisition methods of channel quality indication (CQI) information and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110112852.6A CN102170334B (en) | 2011-05-03 | The acquisition methods of channel quality indication (CQI) information and device |
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| CN102170334B true CN102170334B (en) | 2016-12-14 |
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| WO2008051061A1 (en) * | 2006-10-27 | 2008-05-02 | Electronics And Telecommunications Research Institute | Method for reporting a channel quality information in wireless communication system |
| CN101873625A (en) * | 2009-04-27 | 2010-10-27 | 大唐移动通信设备有限公司 | Relay link channel estimation method, system and equipment |
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