CN104935402B - The method, apparatus and equipment that subband CQI is reported are carried out in LC-MTC user equipmenies - Google Patents
The method, apparatus and equipment that subband CQI is reported are carried out in LC-MTC user equipmenies Download PDFInfo
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- CN104935402B CN104935402B CN201410109877.4A CN201410109877A CN104935402B CN 104935402 B CN104935402 B CN 104935402B CN 201410109877 A CN201410109877 A CN 201410109877A CN 104935402 B CN104935402 B CN 104935402B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
- H04L1/001—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding applied to control information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/52—Allocation or scheduling criteria for wireless resources based on load
Abstract
A kind of method that progress subband CQI is reported in LC MTC user equipmenies is provided, wherein, the network that the LC MTC user equipmenies are currently located does not support LC MTC to be configured, and this method includes the following steps：A. configuration is reported based on current CQI, determines to need the candidate subband into the multiple subbands and multiple subband that base station reports, wherein, the quantity of candidate's subband is no more than the number of sub-bands upper limit that the LC MTC user equipmenies are supported；B. the CQI deviations of the candidate subband are set as higher CQI deviations, the CQI deviations of other subbands in the multiple subband is set as relatively low CQI deviations；C., the CQI deviations of set the multiple subband are reported to the base station belonging to the user equipment.Scheme according to the present invention, can in traditional network more effective scheduling bandwidth limited users equipment.
Description
Technical field
Subband CQI is carried out in LC-MTC user equipmenies the present invention relates to field of communication technology more particularly to one kind to report
Method, apparatus and equipment.
Background technology
In the prior art, it is in general, preceding several in user equipment subframe（Such as first 1 to 3）It is received in OFDM symbol
Then PDCCH receives PDSCH PRB of concern in OFDM symbol subsequent in identical subframe.Since UE cannot be immediately
PDCCH is decoded, therefore it needs the PRB of storage full bandwidth value, so that it can decode PDSCH after PDCCH is decoded.This to
The bandwidth of family equipment has certain requirement.If the bandwidth of user equipment is less than the full bandwidth value for needing to store, used in LC-MTC
The situation that data can not be correctly received or send can be generated in the equipment of family.
However, under certain occasion, the bandwidth of user equipment can be restricted, such as in order to reduce cost, under some occasions
The bandwidth of meeting restricting user equipment uses.Then when the user equipment of such Bandwidth-Constrained is run in existing traditional network, by
In existing traditional network, network such as release11 and before it, can give tacit consent to the user equipment run within its scope is
The unrestricted equipment of the equipment of full bandwidth, i.e. bandwidth.Therefore, because Bandwidth-Constrained, runs in such existing traditional network
The user equipment of Bandwidth-Constrained tend not to receive or store the relevant information on all Physical Resource Block completely so that
The situation that data can not be correctly received or send can be generated on the user equipment of Bandwidth-Constrained.
Invention content
The object of the present invention is to provide it is a kind of carried out in LC-MTC user equipmenies the method, apparatus that reports of subband CQI and
Equipment.
According to an aspect of the present invention, a kind of method that progress subband CQI is reported in LC-MTC user equipmenies is provided,
Wherein, the network that the LC-MTC user equipmenies are currently located does not support LC-MTC to be configured, and this method includes the following steps：
A. configuration is reported based on current CQI, determines to need into the multiple subbands and multiple subband that base station reports
Candidate subband, wherein, the quantity of candidate's subband is no more than in the number of sub-bands supported of the LC-MTC user equipmenies
Limit；
B. the CQI deviations of the candidate subband are set as higher CQI deviations, by other subbands in the multiple subband
CQI deviations are set as relatively low CQI deviations；
C., the CQI deviations of set the multiple subband are reported to the base station belonging to the user equipment.
According to another aspect of the present invention, provide it is a kind of in LC-MTC user equipmenies carry out subband CQI report it is upper
Reporting device, wherein, the network that the LC-MTC user equipmenies are currently located does not support LC-MTC to be configured, the reporting device include with
Lower device：
Determining device for reporting configuration based on current CQI, determines the multiple subbands for needing to report to base station and is somebody's turn to do
Candidate subband in multiple subbands, wherein, the quantity of candidate's subband is no more than what the LC-MTC user equipmenies were supported
The number of sub-bands upper limit；
Device is set, for the CQI deviations of the candidate subband to be set as higher CQI deviations, by the multiple subband
In the CQI deviations of other subbands be set as relatively low CQI deviations；
Sending device, for the CQI deviations of set the multiple subband to be reported to belonging to the user equipment
Base station.
According to another aspect of the present invention, a kind of LC-MTC user equipmenies are additionally provided, on of the present invention
Reporting device.
Compared with prior art, the present invention has the following advantages：1）According to the scheme of the present embodiment, LC-MTC user equipmenies
It is configured by the CQI deviations of multiple subbands to reporting, base station is enabled to be more likely to time of the selection with higher CQI
Subband is selected, so as in existing traditional network, reduce the subband dispatched when base station carries out data transmission to LC-MTC user equipmenies,
It cannot be sent out so as to reduce LC-MTC user equipmenies in existing traditional network because the loss of data that is generated during Bandwidth-Constrained or normally
The possibility sent；Preferably, when the CQI deviations of candidate subband are set as highest, when the CQI deviations of other subbands are set as minimum,
The possibility of base station selected candidate subband can be further improved, so as to further reduce LC-MTC user equipmenies in existing tradition
The loss of data generated due to Bandwidth-Constrained in network or the possibility that cannot normally send；3）When CQI reporting schemes are LC-
MTC user equipmenies select subband when, by limiting the number of sub-bands of LC-MTC user equipment to report, can be more preferable avoid base station
Dispatched multi-subband（The subband for the number of sub-bands upper limit supported more than LC-MTC user equipmenies）Situation；Also, when on CQI
Subband is configured for base station for report mode and the number of sub-bands that the number of sub-bands reported is more than the support of LC-MTC user equipmenies is specified in base station
During the upper limit, dispatched by carrying out the setting of CQI deviations to subband to reduce when base station carries out data transmission to LC-MTC user equipmenies
Subband the advantages of become apparent from；4）By the way that by subband selected as candidate's subband of practical CQI higher, communication quality can be improved；
5）By allowing the OFDM symbol in skipping same subframe during PDCCH is decoded, and the OFDM symbol being skipped, energy can be restored
Cross-subframe scheduling is enough avoided, greatly reduces the complexity of scheduling；6）LC-MTC user equipmenies can be according to its reality by base station scheduling
Situation update the candidate subband into the subband that base station reports, can increase possibility that LC-MTC user equipmenies are scheduled and
Validity.For example, when subband candidate determined by LC-MTC user equipmenies is the reserved subband of other purposes by base station, base
Station, which will not be on candidate's subband, dispatches the LC-MTC user equipmenies, then the scheme of the present embodiment can be by updating candidate subband
To avoid what LC-MTC user equipmenies will not be scheduled from happening.
Description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, of the invention is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is the flow of method that progress subband CQI is reported in LC-MTC user equipmenies of one embodiment of the invention
Schematic diagram；
Fig. 2 is the stream of method that progress subband CQI is reported in LC-MTC user equipmenies of another embodiment of the present invention
Journey schematic diagram；
Fig. 3 is the reporting device that subband CQI is carried out in LC-MTC user equipmenies and is reported of one embodiment of the invention
Structure diagram；
Fig. 4 is the reporting device that progress subband CQI is reported in LC-MTC user equipmenies of another embodiment of the present invention
Structure diagram.
The same or similar reference numeral represents the same or similar component in attached drawing.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is one embodiment of the invention in LC-MTC（Inexpensive machine type communication, Low Cost MTC）User
The flow diagram of method that subband CQI is reported is carried out in equipment.Wherein, the method for the present embodiment mainly passes through LC-MTC user
Equipment realizes, LC-MTC user equipmenies can be any user equipment for supporting LC-MTC, such as intelligent electric meter etc..In this implementation
In the scene of example, the network that the LC-MTC user equipmenies are currently located does not support LC-MTC to be configured；Wherein, LC-MTC user sets
It is standby can be by reading SIB（System information block, system information block）To determine that the LC-MTC user equipmenies are worked as
Whether the network at preceding place supports LC-MTC to be configured.
It should be noted that the LC-MTC user equipmenies are only for example, other LC- that are existing or being likely to occur from now on
MTC user equipmenies are such as applicable to the present invention, should also be included within the scope of the present invention, and are contained in by reference
This.
To be illustrated more clearly that the solution of the present invention, first LC-MTC and LC-MTC user equipmenies are illustrated below：
M2M（Machine to Machine, machine to machine）Communication is also referred to as MTC（Machine Type
Communication, machine type communication）.In order to reduce the cost of MTC user equipmenies, 3GPP proposes the concept of LC-MTC.
In LC-MTC, the equipment for carrying out machine type communication is LC-MTC user equipmenies, as a preferable example, the LC-MTC user
Equipment usually has at least one of following characteristics：
1）There are one reception antennas for tool.
It should be noted that since LC-MTC user equipmenies only have there are one reception antenna, therefore LC-MTC user equipmenies
CQI reporting schemes will not be configured to broadband by base station and report.
2）For the maximum uplink of unicast and downlink TBS（Transport block size, Transport Block
Size）It is limited, such as it is no more than 1000 bits.
3）Bandwidth-Constrained, i.e. LC-MTC user equipmenies can only be in the wide interior progress signaling of smaller strip or data processing namely LC-
MTC user equipmenies only support a certain number of PRB（Physical Resource Block, Physical Resource Block）.
For example, the bandwidth of LC-MTC user equipmenies can be arranged to 1.4MHz, LC-MTC user equipmenies are most under the bandwidth
It can mostly support 6 PRB.
Step S1, step S2 and step S3 are included according to the method for the present embodiment.
In step sl, LC-MTC user equipmenies report configuration based on current CQI, determine to need to report to base station more
Candidate subband in a subband and multiple subband, wherein, the quantity of candidate's subband is no more than the LC-MTC user
The number of sub-bands upper limit that equipment is supported.
Wherein, base station can be by sending the message to realize that the CQI reports configuration to LC-MTC user equipmenies.Wherein, base
It is a variety of for the message of configuration being reported to may include for LC-MTC user equipmenies progress CQI transmitted by standing.For example, base station is to LC-
The message that MTC user equipmenies are sent includes but not limited to：
RRCConnectionSetup（RRC connections are established）；
RRCConnectionReestablishment（RRC connection re-establishments）；
RRCConnectionReconfiguration（RRC connection reconfigurations are put）Deng.
Wherein, the CQI reports configuration to may be used to indicate the CQI reporting schemes of LC-MTC user equipmenies；Wherein, it is described
CQI reporting schemes mainly include：1）Subband is configured in base station, i.e., needs the subband of LC-MTC user equipment to report by base station to specify
Quantity, as CQI reports the CQI that instruction base station specifies LC-MTC user equipmenies to report to base station 5 subbands in configuration；2）LC-MTC
User equipment selects subband, i.e., the number of sub-bands that its needs is voluntarily selected to report by user equipment.
Wherein, each subband includes multiple PRB.For example, when the CQI reporting schemes that LC-MTC user equipmenies are supported are base station
When subband is configured, each subband includes 4 to 8 PRB；In another example the CQI reporting schemes currently supported when LC-MTC user equipmenies
When selecting subband for LC-MTC user equipmenies, each subband includes 2 to 4 PRB.
Specifically, LC-MTC user equipmenies report configuration based on current CQI, determine the multiple sons for needing to report to base station
The realization method of band and the candidate subband in multiple subband includes but not limited to：
1）Current CQI report configuration support by LC-MTC user equipmenies select subband, then LC-MTC user equipmenies according to
Current CQI reports configuration, determines the subband no more than its number of sub-bands upper limit, the multiple sons reported as needs to base station
Band, and determine the candidate subband in multiple subband.
It should be noted that when current CQI reports configuration support by LC-MTC user equipmenies selection subband, LC-MTC is used
Family equipment needs the quantity of multiple subbands reported to base station no more than the number of sub-bands upper limit of the LC-MTC user equipmenies.
Specifically, LC-MTC user equipmenies determine the son for being no more than the number of sub-bands upper limit of its support in this realization method
Band as multiple subbands for being reported to base station of needs, and determines that the mode of the candidate subband in multiple subband includes but unlimited
In：
a）LC-MTC user equipmenies determine the subband no more than its number of sub-bands upper limit, more as needing to report to base station
A subband, and one or more subbands are therefrom randomly choosed, as candidate subband.
For example, the number of sub-bands upper limit that LC-MTC user equipmenies are supported is 3, then LC-MTC user equipmenies determine 3 sons
Band needs the multiple subbands reported to base station as it；Also, LC-MTC user equipmenies can select 2 from multiple subband at random
A subband is as candidate subband.
b）LC-MTC user equipmenies determine the subband no more than its number of sub-bands upper limit, more as needing to report to base station
A subband；Also, LC-MTC user equipmenies calculate the practical CQI of each subband in multiple subband, and by comparing described
The practical CQI of each subband determines candidate's subband.Wherein, the practical CQI of the candidate subband is higher than LC-MTC user equipmenies
The practical CQI of other subbands in identified multiple subbands.
For example, the number of sub-bands upper limit that LC-MTC user equipmenies are supported is 3, then LC-MTC user equipmenies determine 3 sons
Band needs the multiple subbands reported to base station as it；Also, LC-MTC user equipmenies can determine practical CQI in multiple subband
Highest 1 subband is as candidate subband.
Preferably for a subband, what LC-MTC user equipmenies can be received according to the LC-MTC user equipment last times
The sum of PDSCH symbols, the last quantity of OFDM symbol skipped during the PDCCH symbols received are decoded, Yi Jishang
The once CQI measured values of the SINR measured values on the subband or the subband calculate the practical CQI of the subband.
As an example, for a subband, LC-MTC user equipmenies can connect according to the LC-MTC user equipment last times
The quantity of OFDM symbol skipped during the sum of PDSCH symbols that receives, the last PDCCH symbols received in decoding,
And last SINR measured values on the subband, and the practical CQI of the subband is calculated based on the following formula：
Wherein,Practical CQI for subband；SINRmIt is actually surveyed on the subband for the LC-MTC user equipment last times
The SINR value measured；N0The sum of PDSCH symbols received for the LC-MTC user equipment last times；NsIt is set for LC-MTC user
The quantity of OFDM symbol skipped during the standby last PDCCH symbols received in decoding；F function loses for calculating SINR
Value；G functions are used for according to SINRmThe practical CQI of subband is calculated with SINR penalty values.
As another example, for a subband, LC-MTC user equipmenies can be according to the LC-MTC user equipmenies last time
The sum of PDSCH symbols, the last number of OFDM symbol skipped during the PDCCH symbols received are decoded received
The CQI measured values of amount and the subband, and the practical CQI of the subband is calculated based on the following formula：
Wherein, CQImThe CQI value actually measured on the subband for the LC-MTC user equipment last times；D is based on
Calculate the function of CQI offsets.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that any report configuration instruction to select subband by LC-MTC user equipmenies in current CQI
In the case of, configuration is reported according to current CQI, determines the subband no more than its number of sub-bands upper limit, as needing to base station
The multiple subbands reported, and determine the realization method of the candidate subband in multiple subband, it should be included in the scope of the present invention
It is interior.
In addition, by allowing the OFDM symbol in skipping same subframe during PDCCH is decoded, and can restore what is be skipped
OFDM symbol can avoid cross-subframe scheduling, greatly reduce the complexity of scheduling.
2）Current CQI reports configuration instruction that subband is configured by base station, then LC-MTC user equipmenies are specific according to base station
Configuration requirement determines multiple subbands, as multiple subbands that needs are reported to base station, and determines candidate's in multiple subband
Band.
Specifically, in this realization method, LC-MTC user equipmenies determine multiple sons according to the specific configuration requirement in base station
Band as multiple subbands for being reported to base station of needs, and determines that the mode of the candidate subband in multiple subband includes but unlimited
In：
a）Number of sub-bands that base station is configured, that LC-MTC user equipmenies is required to be reported to it is set no more than LC-MTC user
The standby number of sub-bands upper limit supported.
In the case, LC-MTC user equipmenies determine that multiple subbands are used as the multiple subbands for needing to report to base station,
And determine the mode of the candidate subband in multiple subband, with aforementioned realization method 1）In（Son is selected by LC-MTC user equipmenies
During band）LC-MTC user equipmenies determine that the subband no more than its number of sub-bands upper limit is used as the multiple sons for needing to report to base station
Band, and the mode of the candidate subband in determining multiple subband is same or similar, details are not described herein.
b）Number of sub-bands that base station is configured, that LC-MTC user equipmenies is required to be reported to it is more than LC-MTC user equipmenies
The number of sub-bands upper limit of support.
It should be noted that in the case, candidate subband is used no more than LC-MTC determined by LC-MTC user equipmenies
The number of sub-bands upper limit that family equipment is supported, but multiple sub-band sums are set more than LC-MTC user determined by LC-MTC user equipmenies
The standby number of sub-bands upper limit supported.As a preferred embodiment, candidate number of sub-bands determined by LC-MTC user equipmenies, with it
The number of sub-bands upper limit of support is identical.
In this realization method, LC-MTC user equipmenies determine that the mode of candidate subband includes but not limited to：
i）LC-MTC user equipmenies randomly choose one or more sons for being no more than the number of sub-bands upper limit from multiple subbands
Band, as candidate subband.
Wherein, LC-MTC user equipmenies randomly choose one or more no more than the number of sub-bands upper limit from multiple subbands
Subband is used as the mode of candidate subband, with aforementioned realization method 1）A）In（When selecting subband by LC-MTC user equipmenies）,
LC-MTC user equipmenies randomly choosed from multiple subbands one or more subbands be used as candidate subband mode is identical or phase
Seemingly.
It is that base station is configured, LC-MTC is required to use for example, the number of sub-bands upper limit supported of LC-MTC user equipmenies is 3
The number of sub-bands that family equipment is reported to it be 5, then LC-MTC user equipmenies determine 5 subbands be needs reported to base station it is multiple
Subband, and 3 subbands are randomly choosed as candidate subband from multiple subband.
ii）LC-MTC user equipmenies calculate the practical CQI of each subband in multiple subbands, and by comparing described each
The practical CQI of subband determines one or more subbands for being no more than the number of sub-bands upper limit, as candidate subband.
Wherein, LC-MTC user equipmenies calculate the practical CQI of each subband in multiple subbands, and by comparing described every
The practical CQI of a subband determines one or more subbands for being no more than the number of sub-bands upper limit, as the mode of candidate subband, with
Aforementioned realization method 1）B）In（When selecting subband by LC-MTC user equipmenies）, LC-MTC user equipmenies are calculated in multiple subbands
Each subband practical CQI, and by comparing each subband practical CQI come determine candidate subband mode it is identical or
It is similar.
It is that base station is configured, LC-MTC is required to use for example, the number of sub-bands upper limit supported of LC-MTC user equipmenies is 3
The number of sub-bands that family equipment is reported to it be 5, then LC-MTC user equipmenies determine 5 subbands be needs reported to base station it is multiple
Subband, and determine 3 subbands of practical CQI higher in multiple subband as candidate subband.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that it is any in the case where current CQI reports configuration instruction that subband is configured by base station,
It determines to need to be used as the multiple subbands for needing to report to base station to multiple subbands that base station reports, and determine in multiple subband
Candidate subband realization method, should be included in the scope of the present invention.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention rather than the limit to the present invention
System it should be appreciated by those skilled in the art that any report configuration based on current CQI, determines to need to report to base station multiple
The realization method of candidate subband in subband and multiple subband, should be included in the scope of the present invention.
In step s 2, the CQI deviations of candidate subband are set as higher CQI deviations by LC-MTC user equipmenies, by really
The CQI deviations of other subbands are set as relatively low CQI deviations in fixed multiple subbands.
Preferably, the higher CQI deviations are highest CQI deviations, and the relatively low CQI deviations are minimum CQI deviations.
Preferably, LC-MTC user equipmenies report the CQI reporting schemes specified in configuration to determine that optional CQI is inclined according to CQI
Poor range, and the CQI deviations of candidate subband are set as to the higher CQI deviations in optional CQI deviation ranges, it will be in multiple subbands
The CQI deviations of other subbands other than candidate subband are set as the relatively low CQI deviations in optional deviation CQI ranges.
For example, LC-MTC user equipmenies report configuration to determine that the LC-MTC user equipmenies support base station configuration according to CQI
Band, then optional CQI deviation ranges for 0,1,>2,<- 1 }, then in step s 2, LC-MTC user equipmenies are by the CQI of candidate subband
Deviation is set as>2, it would be desirable to which the CQI deviations of other subbands in the multiple subbands reported to base station are set as<-1.
In another example LC-MTC user equipmenies report configuration to determine that the LC-MTC user equipmenies support LC-MTC to use according to CQI
Family equipment selection subband, then optional deviation CQI ranging from<1,2,3,>4 }, then in step s 2, LC-MTC user equipmenies will wait
The CQI deviations of subband is selected to be set as>4, it would be desirable to which the CQI deviations of other subbands in the multiple subbands reported to base station are set as
<1。
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that any CQI deviations by the candidate subband are set as higher CQI deviations, by described in
The CQI deviations of other subbands are set as the realization method of relatively low CQI deviations in multiple subbands, should be included in the scope of the present invention
It is interior.
In step s3, the CQI deviations of set multiple subbands are reported to the user and set by LC-MTC user equipmenies
Standby affiliated base station.
According to the scheme of the present embodiment, LC-MTC user equipmenies are set by the CQI deviations of multiple subbands to reporting
It puts, base station is enabled to be more likely to candidate subband of the selection with higher CQI, so as in existing traditional network, reduce base
It stands the subband dispatched when carrying out data transmission to LC-MTC user equipmenies, so as to reduce LC-MTC user equipmenies in existing traditional net
The loss of data generated due to Bandwidth-Constrained in network or the possibility that cannot normally send.Preferably, when by the CQI of candidate subband
Deviation is set as highest, when the CQI deviations of other subbands are set as minimum, can further improve the possibility of base station selected candidate subband
Property, so as to further reduce the loss of data that is generated due to Bandwidth-Constrained in existing traditional network of LC-MTC user equipmenies or not
The possibility that can normally send.
Preferably, when CQI reporting schemes select subband for LC-MTC user equipmenies, by limiting LC-MTC user equipmenies
The number of sub-bands reported, can be more preferable base station scheduling is avoided to cross multi-subband（The subband supported more than LC-MTC user equipmenies
The subband of transformation）Situation；Also, when CQI reporting schemes specify the sub-band number reported for base station configuration subband and base station
When amount is more than the number of sub-bands upper limit that LC-MTC user equipmenies are supported, base station is reduced by carrying out the setting of CQI deviations to subband
The advantages of subband dispatched when carrying out data transmission to LC-MTC user equipmenies, becomes apparent from.
Preferably, by the way that by subband selected as candidate's subband of practical CQI higher, communication quality can be improved.
As a preferred embodiment, the method for the present embodiment, which is additionally included in before step S3, performs step S5, step S3 into
One step includes step S3 '.
In step s 5, LC-MTC user equipmenies calculate the average CQI of all subbands.Wherein, all subbands refer to base
Included whole subbands in the range of supported whole bandwidth of standing.If bandwidth of base station is 20MHz, then all subbands refer to this
Included whole subbands in 20MHz bandwidth ranges.
Wherein, LC-MTC user equipmenies can connect according to the sum of PDSCH symbols that LC-MTC user equipmenies receive, decoding
The quantity for the OFDM symbol skipped during the PDCCH symbols received and the SINR average values of all subbands or all subbands
CQI average values calculate the average CQI.
As an example, LC-MTC user equipmenies can be accorded with according to the PDSCH that the LC-MTC user equipment last times receive
Number sum, the quantity of the OFDM symbol skipped during the PDCCH symbols that receive of last decoding and last all
SINR average values on subband, and the average CQI of all subbands is calculated based on the following formula：
Wherein,Average CQI for all subbands；SINRnIt is measured on all subbands for LC-MTC user equipmenies
SINR average values.
As another example, PDSCH that LC-MTC user equipmenies can be received according to the LC-MTC user equipment last times
It the quantity of the OFDM symbol skipped during the sum of symbol, the last PDCCH symbols received in decoding and measures
CQI average values on all subbands, and the average CQI of all subbands is calculated based on the following formula：
Wherein, CQInFor LC-MTC user equipmenies all subbands average CQI.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that any practical CQI according to the multiple subband, calculates the flat of the multiple subband
The realization method of equal CQI, should be included in the scope of the present invention.
In step S3 ', LC-MTC user equipmenies are by CQI deviations of set the multiple subband and described average
CQI is reported to the base station belonging to the user equipment.
It should be noted that as the network support LC-MTC that LC-MTC user equipmenies are currently located, LC-MTC user sets
It is standby can be according to providing the LC-MTC access procedures of execution standard and transmission/receive process in release12.
This programme also allows for the OFDM symbol in skipping same subframe during PDCCH is decoded, and can restore to be skipped
OFDM symbol, so as to avoid cross-subframe scheduling, greatly reduce the complexity of scheduling.
Fig. 2 is the stream of method that progress subband CQI is reported in LC-MTC user equipmenies of another embodiment of the present invention
Journey schematic diagram.The method of the present embodiment is mainly realized by LC-MTC user equipmenies；Wherein, to reference to embodiment illustrated in fig. 1
Described in any explanation for being made of LC-MTC user equipmenies, by reference comprising in this present embodiment.According to this reality
The method for applying example includes step S1, step S2, step S3 and step S4.Wherein, step S1, step S2 and step S3 in reference
It is described in detail in embodiment illustrated in fig. 1, and is incorporated herein by reference, repeated no more.
In step s 4, when failing the LC-MTC described in the base station scheduling or the base station scheduling in the given time
The PRB that is used during equipment has that when being not belonging to the corresponding PRB of the candidate subband, LC-MTC user equipmenies will other described subbands
In all or part of subband as candidate subband, and repeating said steps S2 and S3.
Specifically, when failing the LC-MTC equipment described in the base station scheduling or the base station scheduling in the given time
When the PRB that uses have that when being not belonging to the corresponding PRB of the candidate subband, LC-MTC user equipmenies will be in other described subbands
All or part of subband is as candidate subband, and the realization method of repeating said steps S2 and S3 include but not limited to：
1）For LC-MTC user equipmenies in the given time not by base station scheduling, LC-MTC user equipmenies will other described subbands
In all or part of subband as candidate subband, and repeating said steps S2 and S3.
For example, the predetermined time is 5 CQI report cycles, LC-MTC user equipmenies are more than 5 CQI report cycles not by base
It stands scheduling, then LC-MTC user equipmenies are using other subbands as candidate subband, and repeating said steps S2 and S3.
2）The PRB used during LC-MTC equipment described in base station scheduling is not admitted to the candidate subband corresponding PRB, LC-
MTC user equipmenies are using all or part of subband in other described subbands as candidate subband, and repeating said steps S2 and S3.
Preferably, son of the LC-MTC user equipmenies belonging to by used PRB during the base station scheduling LC-MTC user equipmenies
Band is as candidate subband.
For example, LC-MTC user equipmenies report two subbands to base station：Subband 1 and subband 2.Wherein, subband 1 is candidate son
Band；Wherein, subband 1 includes PRB1, PRB2, PRB3 and PRB4, and subband 2 includes PRB5, PRB6, PRB7 and PRB8；Base station tune
Spend the PRB that is used during the LC-MTC equipment for PRB5, PRB6, PRB7 and PRB8, then LC-MTC user equipmenies using subband 2 as
Candidate subband, and repeating said steps S2 and S3.
3）The PRB used during LC-MTC equipment described in base station scheduling is corresponding in the presence of the candidate subband is partly not belonging to
PRB, then the candidate subband being scheduled for corresponding PRB, LC-MTC user equipmenies will its be left candidate subband, and
And LC-MTC user equipmenies are also using all or part of subband in other described subbands as new candidate subband, and repeat institute
State step S2 and S3.
For example, LC-MTC user equipmenies report two subbands to base station：Subband 1 and subband 2.Wherein, subband 1 is candidate son
Band；Wherein, subband 1 includes PRB1, PRB2, PRB3 and PRB4, and subband 2 includes PRB5, PRB6, PRB7 and PRB8；Base station tune
It is PRB1, PRB2, PRB7 and PRB8 to spend the PRB used during the LC-MTC equipment, then LC-MTC user equipmenies will reservation subband 1
As candidate subband, and determine subband 2 as candidate subband newly, and repeating said steps S2 and S3.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that any ought fail in the given time by the base station scheduling or the base station scheduling
When the PRB used during the LC-MTC equipment does not all belong to the candidate subband, by the whole in other described subbands or portion
Molecular band is used as candidate subband, and the realization method of repeating said steps S2 and S3, should be included in the scope of the present invention.
According to the scheme of the present embodiment, LC-MTC user equipmenies can according to its reality by the situation of base station scheduling come update to
Candidate subband in the subband that base station reports can increase possibility and validity that LC-MTC user equipmenies are scheduled.For example, work as
When candidate subband determined by LC-MTC user equipmenies by base station is other purposes reserved subband, base station will not be in the time
It selects and the LC-MTC user equipmenies is dispatched on subband, then the scheme of the present embodiment can avoid LC-MTC from using by updating candidate subband
What family equipment will not be scheduled happens.
Fig. 3 is the reporting device that subband CQI is carried out in LC-MTC user equipmenies and is reported of one embodiment of the invention
Structure diagram.
Determining device 1, setting device 2 and sending device 3 are included according to the reporting device of the present embodiment.
Determining device 1 reports configuration based on current CQI, determines multiple subbands for needing to report to base station and multiple
Candidate subband in subband, wherein, the quantity of candidate's subband is no more than the subband that the LC-MTC user equipmenies are supported
Transformation.
Wherein, base station can be by sending the message to realize that the CQI reports configuration to LC-MTC user equipmenies.Wherein, base
It is a variety of for the message of configuration being reported to may include for LC-MTC user equipmenies progress CQI transmitted by standing.For example, base station is to LC-
The message that MTC user equipmenies are sent includes but not limited to：
RRCConnectionSetup（RRC connections are established）；
RRCConnectionReestablishment（RRC connection re-establishments）；
RRCConnectionReconfiguration（RRC connection reconfigurations are put）Deng.
Wherein, the CQI reports configuration to may be used to indicate the CQI reporting schemes of LC-MTC user equipmenies；Wherein, it is described
CQI reporting schemes mainly include：1）Subband is configured in base station, i.e., needs the subband of LC-MTC user equipment to report by base station to specify
Quantity, as CQI reports the CQI that instruction base station specifies LC-MTC user equipmenies to report to base station 5 subbands in configuration；2）LC-MTC
User equipment selects subband, i.e., the number of sub-bands that its needs is voluntarily selected to report by user equipment.
Wherein, each subband includes multiple PRB.For example, when the CQI reporting schemes that LC-MTC user equipmenies are supported are base station
When subband is configured, each subband includes 4 to 8 PRB；In another example the CQI reporting schemes currently supported when LC-MTC user equipmenies
When selecting subband for LC-MTC user equipmenies, each subband includes 2 to 4 PRB.
Specifically, it is determined that device 1 reports configuration based on current CQI, determine the multiple subbands for needing to report to base station with
And the realization method of the candidate subband in multiple subband includes but not limited to：
1）Current CQI reports configuration to support to select subband by LC-MTC user equipmenies, it is determined that device 1 is according to current
CQI reports configuration, determines the subband no more than its number of sub-bands upper limit, as multiple subbands that needs are reported to base station, and really
Candidate subband in fixed multiple subband.
It should be noted that when current CQI reports configuration support by LC-MTC user equipmenies selection subband, LC-MTC is used
Family equipment needs the quantity of multiple subbands reported to base station no more than the number of sub-bands upper limit of the LC-MTC user equipmenies.
Specifically, determining device 1 determines the subband no more than its number of sub-bands upper limit supported in this realization method, as
The multiple subbands reported to base station are needed, and determine that the mode of the candidate subband in multiple subband includes but not limited to：
a）Determining device 1 determines the subband no more than its number of sub-bands upper limit, the multiple sons reported as needs to base station
Band, and one or more subbands are therefrom randomly choosed, as candidate subband.
For example, the number of sub-bands upper limit that LC-MTC user equipmenies are supported is 3, it is determined that device 1 determines 3 subband conducts
It needs the multiple subbands reported to base station；Also, determining device 1 can be selected from multiple subband at random 2 subbands as
Candidate subband.
b）Determining device 1 determines the subband no more than its number of sub-bands upper limit, the multiple sons reported as needs to base station
Band；Also, determining device 1 calculates the practical CQI of each subband in multiple subband, and by comparing each subband
Practical CQI determines candidate subband.Wherein, the practical CQI of the candidate subband is more higher than determined by LC-MTC user equipmenies
The practical CQI of other subbands in a subband.
For example, the number of sub-bands upper limit that LC-MTC user equipmenies are supported is 3, it is determined that device 1 determines 3 subband conducts
It needs the multiple subbands reported to base station；Also, determining device 1 can determine practical highest 1 son of CQI in multiple subband
Band is as candidate subband.
Preferably for a subband, PDSCH which can receive according to the LC-MTC user equipment last times
The quantity for the OFDM symbol skipped during the sum of symbol, the last PDCCH symbols received in decoding and upper once exist
The CQI measured values of SINR measured values or the subband on the subband calculate the practical CQI of the subband.
As an example, for a subband, which can receive according to the LC-MTC user equipment last times
The sums of PDSCH symbols, the OFDM symbol skipped during the last PDCCH symbols received in decoding quantity and
SINR measured value of the last time on the subband, and the practical CQI of the subband is calculated based on the following formula：
Wherein,Practical CQI for subband；SINRm is actually surveyed for the LC-MTC user equipment last times on the subband
The SINR value measured；N0 is the sum of PDSCH symbols received the LC-MTC user equipment last times；Ns is set for LC-MTC user
The quantity of OFDM symbol skipped during the standby last PDCCH symbols received in decoding；F function loses for calculating SINR
Value；G functions are used to calculate the practical CQI of subband according to SINRm and SINR penalty values.
As another example, for a subband, which can receive according to the LC-MTC user equipment last times
To the sums of PDSCH symbols, skip during the last PDCCH symbols received in decoding the quantity of OFDM symbol, with
And the CQI measured values of the subband, and the practical CQI of the subband is calculated based on the following formula：
Wherein, CQIm is the CQI value actually measured on the subband LC-MTC user equipment last times；D is based on
Calculate the function of CQI offsets.
Preferably, reporting device determines the multiple bases for needing to report to base station by calculating the practical CQI of each subband
During the candidate subband stood, the operation for the CQI value for calculating each subband can be performed by the determining device 1 in reporting device.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that any report configuration instruction to select subband by LC-MTC user equipmenies in current CQI
In the case of, configuration is reported according to current CQI, determines the subband no more than its number of sub-bands upper limit, as needing to base station
The multiple subbands reported, and determine the realization method of the candidate subband in multiple subband, it should be included in the scope of the present invention
It is interior.
In addition, by allowing the OFDM symbol in skipping same subframe during PDCCH is decoded, and can restore what is be skipped
OFDM symbol can avoid cross-subframe scheduling, greatly reduce the complexity of scheduling.
2）Current CQI reports configuration instruction that subband is configured by base station, it is determined that device 1 is specifically configured according to base station will
It asks, determines multiple subbands, as multiple subbands that needs are reported to base station, and determine the candidate subband in multiple subband.
Specifically, in this realization method, determining device 1 determines multiple subbands according to the specific configuration requirement in base station, as
The multiple subbands reported to base station are needed, and determine that the mode of the candidate subband in multiple subband includes but not limited to：
a）Number of sub-bands that base station is configured, that LC-MTC user equipmenies is required to be reported to it is set no more than LC-MTC user
The standby number of sub-bands upper limit supported.
In the case, determining device 1 determines that multiple subbands are used as the multiple subbands for needing to report to base station, and determine
The mode of candidate subband in multiple subband, with aforementioned realization method 1）In（When selecting subband by LC-MTC user equipmenies）Really
Determine device 1 and determine that the subband no more than its number of sub-bands upper limit is used as the multiple subbands for needing to report to base station, and determine to be somebody's turn to do
The mode of candidate subband in multiple subbands is same or similar, and details are not described herein.
b）Number of sub-bands that base station is configured, that LC-MTC user equipmenies is required to be reported to it is more than LC-MTC user equipmenies
The number of sub-bands upper limit of support.
It should be noted that in the case, candidate subband is no more than LC-MTC user equipmenies determined by determining device 1
The number of sub-bands upper limit of support, but multiple sub-band sums determined by determining device 1 are more than the son that LC-MTC user equipmenies are supported
Band transformation.As a preferred embodiment, candidate number of sub-bands, the number of sub-bands supported with it determined by determining device 1
The upper limit is identical.
In this realization method, determining device 1 determines that the mode of candidate subband includes but not limited to：
i）Determining device 1 randomly chooses one or more subbands for being no more than the number of sub-bands upper limit from multiple subbands, makees
For candidate subband.
Wherein it is determined that device 1 randomly chooses one or more subbands for being no more than the number of sub-bands upper limit from multiple subbands
It is used as the mode of candidate subband, with aforementioned realization method 1）A）In（When selecting subband by LC-MTC user equipmenies）, determine
It is same or similar that device 1 randomly chooses the mode that one or more subbands are used as candidate subband from multiple subbands.
It is that base station is configured, LC-MTC is required to use for example, the number of sub-bands upper limit supported of LC-MTC user equipmenies is 3
The number of sub-bands that family equipment is reported to it is 5, it is determined that device 1 determines that 5 subbands are the multiple subbands for needing to report to base station,
And 3 subbands are randomly choosed from multiple subband as candidate subband.
ii）Determining device 1 calculates the practical CQI of each subband in multiple subbands, and by comparing each subband
Practical CQI, one or more subbands for being no more than the number of sub-bands upper limit are determined, as candidate subband.
Wherein it is determined that device 1 calculates the practical CQI of each subband in multiple subbands, and by comparing described per height
The practical CQI of band determines one or more subbands for being no more than the number of sub-bands upper limit, and aforementioned as the mode of candidate subband
Realization method 1）B）In（When selecting subband by LC-MTC user equipmenies）, determining device 1 calculates every height in multiple subbands
The practical CQI of band, and determine that the mode of candidate subband is same or similar by comparing the practical CQI of each subband.
It is that base station is configured, LC-MTC is required to use for example, the number of sub-bands upper limit supported of LC-MTC user equipmenies is 3
The number of sub-bands that family equipment is reported to it is 5, it is determined that device 1 determines that 5 subbands are the multiple subbands for needing to report to base station,
And determine 3 subbands of practical CQI higher in multiple subband as candidate subband.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that it is any in the case where current CQI reports configuration instruction that subband is configured by base station,
It determines to need to be used as the multiple subbands for needing to report to base station to multiple subbands that base station reports, and determine in multiple subband
Candidate subband realization method, should be included in the scope of the present invention.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention rather than the limit to the present invention
System it should be appreciated by those skilled in the art that any report configuration based on current CQI, determines to need to report to base station multiple
The realization method of candidate subband in subband and multiple subband, should be included in the scope of the present invention.
The CQI deviations of candidate subband are set as higher CQI deviations by setting device 2, by its in identified multiple subbands
The CQI deviations of his subband are set as relatively low CQI deviations.
Preferably, the higher CQI deviations are highest CQI deviations, and the relatively low CQI deviations are minimum CQI deviations.
Preferably, setting device 2 reports the CQI reporting schemes specified in configuration to determine optional CQI deviations model according to CQI
It encloses, and the CQI deviations of candidate subband is set as to the higher CQI deviations in optional CQI deviation ranges, it will be candidate in multiple subbands
The CQI deviations of other subbands other than subband are set as the relatively low CQI deviations in optional deviation CQI ranges.
For example, LC-MTC user equipmenies report configuration to determine that the LC-MTC user equipmenies support base station configuration according to CQI
Band, then optional CQI deviation ranges for 0,1,>2,<- 1 }, then device 2 is set to be set as the CQI deviations of candidate subband>2, it will
The CQI deviations of other subbands into multiple subbands that base station reports is needed to be set as<-1.
In another example LC-MTC user equipmenies report configuration to determine that the LC-MTC user equipmenies support LC-MTC to use according to CQI
Family equipment selection subband, then optional deviation CQI ranging from<1,2,3,>4 }, then device 2 is set by the CQI deviations of candidate subband
It is set as>4, it would be desirable to which the CQI deviations of other subbands in the multiple subbands reported to base station are set as<1.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that any CQI deviations by the candidate subband are set as higher CQI deviations, by described in
The CQI deviations of other subbands are set as the realization method of relatively low CQI deviations in multiple subbands, should be included in the scope of the present invention
It is interior.
The CQI deviations of set multiple subbands are reported to the base station belonging to the user equipment by sending device 3.
According to the scheme of the present embodiment, LC-MTC user equipmenies are set by the CQI deviations of multiple subbands to reporting
It puts, base station is enabled to be more likely to candidate subband of the selection with higher CQI, so as in existing traditional network, reduce base
It stands the subband dispatched when carrying out data transmission to LC-MTC user equipmenies, so as to reduce LC-MTC user equipmenies in existing traditional net
The loss of data generated due to Bandwidth-Constrained in network or the possibility that cannot normally send.Preferably, when by the CQI of candidate subband
Deviation is set as highest, when the CQI deviations of other subbands are set as minimum, can further improve the possibility of base station selected candidate subband
Property, so as to further reduce the loss of data that is generated due to Bandwidth-Constrained in existing traditional network of LC-MTC user equipmenies or not
The possibility that can normally send.
Preferably, when CQI reporting schemes select subband for LC-MTC user equipmenies, by limiting LC-MTC user equipmenies
The number of sub-bands reported, can be more preferable base station scheduling is avoided to cross multi-subband（The subband supported more than LC-MTC user equipmenies
The subband of transformation）Situation；Also, when CQI reporting schemes specify the sub-band number reported for base station configuration subband and base station
When amount is more than the number of sub-bands upper limit that LC-MTC user equipmenies are supported, base station is reduced by carrying out the setting of CQI deviations to subband
The advantages of subband dispatched when carrying out data transmission to LC-MTC user equipmenies, becomes apparent from.
Preferably, by the way that by subband selected as candidate's subband of practical CQI higher, communication quality can be improved.
As a preferred embodiment, the reporting device of the present embodiment performs the meter of operation before being additionally included in sending device 3
Calculate device（It is not shown）, sending device 3 further comprises sub- sending device（It is not shown）.
Computing device calculates the average CQI of all subbands.Wherein, all subbands refer to the whole bandwidth that base station is supported
In the range of included whole subbands.If bandwidth of base station is 20MHz, then all subbands refer to institute in the 20MHz bandwidth ranges
Including whole subbands.
Wherein, computing device can be received according to the sum of PDSCH symbols that LC-MTC user equipmenies receive, decoding
The CQI of the SINR average values or all subbands of the quantity for the OFDM symbol skipped during PDCCH symbols and all subbands is averaged
Value calculates the average CQI.
As an example, computing device can be according to the total of the PDSCH symbols that the LC-MTC user equipment last times receive
The quantity for the OFDM symbol skipped during the PDCCH symbols that number, last decoding receive and last time are on all subbands
SINR average values, and the average CQI of all subbands is calculated based on the following formula：
Wherein,Average CQI for all subbands；SINRn is measured for LC-MTC user equipmenies on all subbands
SINR average values.
As another example, computing device can be according to the PDSCH symbols that the LC-MTC user equipment last times receive
The quantity for the OFDM symbol skipped during sum, the last PDCCH symbols received in decoding and measure all
CQI average values on subband, and the average CQI of all subbands is calculated based on the following formula：
Wherein, CQIn is average CQI of the LC-MTC user equipmenies in all subbands.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that any practical CQI according to the multiple subband, calculates the flat of the multiple subband
The realization method of equal CQI, should be included in the scope of the present invention.
The CQI deviations of set the multiple subband and the average CQI are reported to the use by sub- sending device
Base station belonging to the equipment of family.
It should be noted that as the network support LC-MTC that LC-MTC user equipmenies are currently located, LC-MTC user sets
It is standby can be according to providing the LC-MTC access procedures of execution standard and transmission/receive process in release12.
This programme also allows for the OFDM symbol in skipping same subframe during PDCCH is decoded, and can restore to be skipped
OFDM symbol, so as to avoid cross-subframe scheduling, greatly reduce the complexity of scheduling.
Fig. 4 is the reporting device that progress subband CQI is reported in LC-MTC user equipmenies of another embodiment of the present invention
Structure diagram.Determining device 1, setting device 2, sending device 3 and gravity treatment dress are included according to the reporting device of the present embodiment
Put 4.Wherein it is determined that device 1, setting device 2 and sending device 3 are described in detail, and with reference to the embodiment shown in FIG. 3 to draw
Mode is incorporated herein, and is repeated no more.
It is used when failing the LC-MTC equipment described in the base station scheduling or the base station scheduling in the given time
There is all or part of son that when being not belonging to the corresponding PRB of the candidate subband, gravity concentration apparatus 4 will be in other described subbands in PRB
Band triggers and device 2 and sending device 3 is set to repeat operation as candidate subband.
Specifically, when failing the LC-MTC equipment described in the base station scheduling or the base station scheduling in the given time
When the PRB that uses exist when being not belonging to the corresponding PRB of the candidate subband, gravity concentration apparatus 4 is by the whole in other described subbands
Or part subband is as candidate subband, and trigger setting device 2 and sending device 3 repeat operation realization method include but
It is not limited to：
1）For LC-MTC user equipmenies in the given time not by base station scheduling, gravity concentration apparatus 4 will be in other described subbands
All or part of subband triggers and device 2 and sending device 3 is set to repeat operation as candidate subband.
For example, the predetermined time is 5 CQI report cycles, LC-MTC user equipmenies are more than 5 CQI report cycles not by base
It stands scheduling, then gravity concentration apparatus 4 is using other subbands as candidate subband, and triggers setting device 2 and sending device 3 repeats to hold
Row operation.
2）The PRB used during LC-MTC equipment described in base station scheduling is not admitted to the corresponding PRB of the candidate subband, gravity treatment
Device 4 triggers setting device 2 and sending device 3 using all or part of subband in other described subbands as candidate subband
Repeat operation.
Preferably, gravity concentration apparatus 4 using the subband belonging to used PRB during the base station scheduling LC-MTC user equipmenies as
Candidate subband.
For example, LC-MTC user equipmenies report two subbands to base station：Subband 1 and subband 2.Wherein, subband 1 is candidate son
Band；Wherein, subband 1 includes PRB1, PRB2, PRB3 and PRB4, and subband 2 includes PRB5, PRB6, PRB7 and PRB8；Base station tune
It is PRB5, PRB6, PRB7 and PRB8 to spend the PRB used during the LC-MTC equipment, then gravity concentration apparatus 4 is using subband 2 as candidate
Subband, and trigger and device 2 and sending device 3 is set to repeat operation.
3）The PRB used during LC-MTC equipment described in base station scheduling is corresponding in the presence of the candidate subband is partly not belonging to
PRB, then the candidate subband being scheduled for corresponding PRB, gravity concentration apparatus 4 will its be left candidate subband, also, gravity treatment
Device 4 triggers setting device 2 and sends also using all or part of subband in other described subbands as new candidate subband
Device 3 repeats operation.
For example, LC-MTC user equipmenies report two subbands to base station：Subband 1 and subband 2.Wherein, subband 1 is candidate son
Band；Wherein, subband 1 includes PRB1, PRB2, PRB3 and PRB4, and subband 2 includes PRB5, PRB6, PRB7 and PRB8；Base station tune
It is PRB1, PRB2, PRB7 and PRB8 to spend the PRB used during the LC-MTC equipment, then gravity concentration apparatus 4 will reservation 1 conduct of subband
Candidate subband, and subband 2 is determined as new candidate subband, and triggers and device 2 and sending device 3 is set to repeat operation.
It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that any ought fail in the given time by the base station scheduling or the base station scheduling
When the PRB used during the LC-MTC equipment does not all belong to the candidate subband, by the whole in other described subbands or portion
Molecular band triggers and device 2 and sending device 3 is set to repeat operation as candidate subband, should be included in the present invention's
In the range of.
According to the scheme of the present embodiment, LC-MTC user equipmenies can according to its reality by the situation of base station scheduling come update to
Candidate subband in the subband that base station reports can increase possibility and validity that LC-MTC user equipmenies are scheduled.For example, work as
When candidate subband determined by LC-MTC user equipmenies by base station is other purposes reserved subband, base station will not be in the time
It selects and the LC-MTC user equipmenies is dispatched on subband, then the scheme of the present embodiment can avoid LC-MTC from using by updating candidate subband
What family equipment will not be scheduled happens.
It should be noted that the present invention can be carried out in the assembly of software and/or software and hardware, for example, this hair
Application-specific integrated circuit can be used in bright each device（ASIC）Or any other is realized similar to hardware device.In one embodiment
In, software program of the invention can perform to realize steps described above or function by processor.Similarly, it is of the invention
Software program（Including relevant data structure）It can be stored in computer readable recording medium storing program for performing, for example, RAM memory,
Magnetic or optical driver or floppy disc and similar devices.In addition, hardware can be used to realize in some steps or function of the present invention, example
Such as, as coordinating with processor so as to perform the circuit of each step or function.
It is obvious to a person skilled in the art that the present invention is not limited to the details of above-mentioned exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requirement rather than above description limit, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation includes within the present invention.Any reference numeral in claim should not be considered as to the involved claim of limitation.This
Outside, it is clear that one word of " comprising " is not excluded for other units or step, and odd number is not excluded for plural number.That is stated in system claims is multiple
Unit or device can also be realized by a unit or device by software or hardware.The first, the second grade words are used for table
Show title, and do not represent any particular order.
Claims (15)
1. a kind of carry out the method that subband CQI is reported in LC-MTC user equipmenies, wherein, the LC-MTC user equipmenies are current
The network at place does not support LC-MTC to be configured, and this method includes the following steps：
A. configuration is reported based on current CQI, determines to need the time into the multiple subbands and multiple subband that base station reports
Subband is selected, wherein, the quantity of candidate's subband is no more than the number of sub-bands upper limit that the LC-MTC user equipmenies are supported；
B. the CQI deviations of the candidate subband are set as higher CQI deviations, by the CQI of other subbands in the multiple subband
Deviation is set as relatively low CQI deviations；
C., the CQI deviations of set the multiple subband are reported to the base station belonging to the user equipment；
Wherein, the step b includes：
The CQI reporting schemes specified is reported in configuration to determine optional CQI deviation ranges according to the CQI, and by candidate subband
CQI deviations are set as the higher CQI deviations in optional CQI deviation ranges, by other sons other than subband candidate in multiple subbands
The CQI deviations of band are set as the relatively low CQI deviations in optional deviation CQI ranges.
2. according to the method described in claim 1, wherein, the practical CQI of candidate's subband is higher than its in the multiple subband
The practical CQI of his subband.
3. according to the method described in claim 2, wherein, the step of practical CQI for calculating subband, includes：
The sum of PDSCH symbols that is received according to the LC-MTC user equipmenies last time last is received in decoding
In the quantity for the OFDM symbol skipped during PDCCH symbols and last SINR measured values or the subband on the subband
CQI measured values, calculate the practical CQI of the subband.
4. according to the method in any one of claims 1 to 3, wherein, the current CQI reports configuration to support by LC-
MTC user equipmenies select subband, and the quantity of the multiple subband is no more than the sub-band number that the LC-MTC user equipmenies are supported
Measure the upper limit.
5. according to the method in any one of claims 1 to 3, wherein, the current CQI reports configuration to support by described
Subband is configured in base station, and the quantity of the multiple subband is more than the number of sub-bands upper limit that the LC-MTC user equipmenies are supported.
6. according to the method in any one of claims 1 to 3, wherein, this method is further comprising the steps of：
The PRB used when failing the LC-MTC equipment described in the base station scheduling or the base station scheduling in the given time
During in the presence of being not belonging to the corresponding PRB of the candidate subband, using all or part of subband in other described subbands as candidate sub
Band, and repeating said steps b and c.
7. according to the method in any one of claims 1 to 3, wherein, this method further includes following step before step c
Suddenly：
Calculate the average CQI of all subbands；
Wherein, the step c includes the following steps：
The CQI deviations of set the multiple subband and the average CQI are reported to the base belonging to the user equipment
It stands.
8. a kind of carry out the reporting device that subband CQI is reported in LC-MTC user equipmenies, wherein, the LC-MTC user equipmenies
The network being currently located does not support LC-MTC to be configured, which includes following device：
Determining device for reporting configuration based on current CQI, determines multiple subbands for needing to report to base station and multiple
Candidate subband in subband, wherein, the quantity of candidate's subband is no more than the subband that the LC-MTC user equipmenies are supported
Transformation；
Device is set, for the CQI deviations of the candidate subband to be set as higher CQI deviations, by its in the multiple subband
The CQI deviations of his subband are set as relatively low CQI deviations；
Sending device, for the CQI deviations of set the multiple subband to be reported to the base station belonging to the user equipment；
Wherein, the setting device is used for：
The CQI reporting schemes specified is reported in configuration to determine optional CQI deviation ranges according to the CQI, and by candidate subband
CQI deviations are set as the higher CQI deviations in optional CQI deviation ranges, by other sons other than subband candidate in multiple subbands
The CQI deviations of band are set as the relatively low CQI deviations in optional deviation CQI ranges.
9. reporting device according to claim 8, wherein, the practical CQI of candidate's subband is higher than the multiple subband
In other subbands practical CQI.
10. reporting device according to claim 9, wherein, the operation for calculating the practical CQI of a subband includes：
The sum of PDSCH symbols that is received according to the LC-MTC user equipmenies last time last is received in decoding
In the quantity for the OFDM symbol skipped during PDCCH symbols and last SINR measured values or the subband on the subband
CQI measured values, calculate the practical CQI of the subband.
11. the reporting device according to any one of claim 8 to 10, wherein, the current CQI reports configuration to support
Subband is selected by LC-MTC user equipmenies, the quantity of the multiple subband is no more than the son that the LC-MTC user equipmenies are supported
Band transformation.
12. the reporting device according to any one of claim 8 to 10, wherein, the current CQI reports configuration to support
Subband is configured by the base station, the quantity of the multiple subband is more than in the number of sub-bands that the LC-MTC user equipmenies are supported
Limit.
13. the reporting device according to any one of claim 8 to 10, wherein, which further includes following device：
Gravity concentration apparatus sets for that ought fail the LC-MTC described in the base station scheduling or the base station scheduling in the given time
The PRB used when standby exists when being not belonging to the corresponding PRB of the candidate subband, all or part of son that will be in other described subbands
Band triggers and device and sending device is set to repeat operation as candidate subband.
14. the reporting device according to any one of claim 8 to 10, wherein, which is additionally included in the hair
Send the following device that operation is performed before device：
Computing device, for calculating the average CQI of all subbands；
Wherein, the sending device includes following device：
Sub- sending device, for the CQI deviations of set the multiple subband and the average CQI to be reported to the use
Base station belonging to the equipment of family.
15. a kind of LC-MTC user equipmenies, including the reporting device as described in any one of claim 8 to 14.
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| CN101789841B (en) * | 2009-01-24 | 2014-04-09 | 中兴通讯股份有限公司 | Channel quality information feedback method and terminal |
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