CN103580783A - Low-cost machine communication user equipment, channel state information reporting method, base station and channel state information processing method - Google Patents
Low-cost machine communication user equipment, channel state information reporting method, base station and channel state information processing method Download PDFInfo
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- CN103580783A CN103580783A CN201210259426.XA CN201210259426A CN103580783A CN 103580783 A CN103580783 A CN 103580783A CN 201210259426 A CN201210259426 A CN 201210259426A CN 103580783 A CN103580783 A CN 103580783A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
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Abstract
The invention discloses low-cost machine communication user equipment, a channel state information reporting method, a base station, and a channel state information processing method. The channel state information reporting method of the low-cost machine communication user equipment includes the following steps of obtaining broad-band channel state information corresponding to a narrow-band operation bandwidth for communication between the base station and the low-cost machine communication user equipment and sub-band channel state information corresponding to multiple sub-bands in the operation bandwidth, wherein the operation bandwidth is smaller than a bandwidth used for communication between the base station and common low-cost machine communication user equipment; reporting the broad-band channel state information and the sub-band channel state information to the base station. According to the technical scheme of the channel state information reporting method of the low-cost machine communication user equipment, all pieces of sub-band channel state information can be reported to the base station, so that reference value of reported channel state information is improved, and demands for operating on the narrow-band low-cost machine communication user equipment are adapted.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of low-cost machine communication subscriber equipment and channel state information reporting method, base station and channel condition information processing method.
Background technology
3GPP LTE-A Rel-10/11(LTE-Advance, the evolution of LTE) be LTE(Long Term Evolution) enhancing of Rel-8/9 technology, LTE-A system has the Evolution than LTE(Long Term, Long Term Evolution) bandwidth requirement that system is higher, support the peak data rate up to 1G.In order to meet the requirement of high data rate, LTE-A system is by carrier convergence (Component Aggregation, CA) technology is as the method for its expanding system bandwidth, and adopting in a large number MIMO(Multiple-Input Multiple-Output, multi-antenna technology) enhancing technology and adaptive technique improve data rate and systematic function.
In LTE-A system, UE(User Equipment, subscriber equipment) need to be to eNB(eNodeB, base station) feed back some channel condition informations (Channel State Information, CSI, comprise CQI(Channel Quality Indicator, channel quality indication), PMI(Precoding Matrix Indicator, pre-coding matrix indication), PTI(Precoding Type Indication, precoding type is indicated) and RI(Rank Indicator, order indication) etc.), base station is according to the up UL(Uplink that receives) feedback information determines descending DL(Downlink) the MCS(Modulation and Coding Scheme that uses, modulation coding mode, as adopt QPSK, 16QAM or 64QAM, and adopt which kind of code check), realize Adaptive Modulation and Coding (AMC, Adaptive Modulation and Coding, according to the variation of channel condition, dynamically select suitable modulation coding mode).
In LTE-A system, reporting of channel condition information CSI comprises that trigger-type reports and periodically reports two kinds, trigger-type reports mainly at PUSCH(Physical Uplink Shared Channel, Physical Uplink Shared Channel) upper feedback, periodically report mainly at PUCCH(Physical Uplink Control Channel, Physical Uplink Control Channel) upper feedback, wherein, it is to supplementing of periodically reporting that trigger-type reports.Cycle information feedback on PUCCH mainly can be divided into cycle broadband and report pattern and cycle frequently to choose two types of report patterns, cycle broadband reports pattern only to feed back broadband CSI information, cycle is chosen the feedback of existing broadband CSI information of report pattern frequently, also has the feedback of subband CSI information.
Refer to Fig. 1, Fig. 1 is the sequential schematic diagram that in prior art, cycle broadband reports pattern, and as shown in Figure 1, Np is report cycle, and the per interval Np of user equipment (UE) reports a broad-band channel state information WB to base station.
And refer to Fig. 2 and Fig. 3, and Fig. 2 is the sequential schematic diagram that in prior art, the cycle is chosen report pattern frequently, Fig. 3 is the structural representation of the cycle of prior art frequently choosing broadband in report pattern.As shown in Figures 2 and 3, periodically frequently choosing in report pattern, whole broadband 10 is divided into J BP (Bandwidth part, part bandwidth) 101,102,103, each BP101,102,103 comprises a plurality of subbands 104, in each BP101,102,103, only select an optimal sub-band (Best SB) to report, for example, in BP101, select the subband 104 illustrating as black to report as optimal sub-band.K represents to report circulation, in Fig. 2, and J=3, K=2, the optimal sub-band that has 3 BP reports, and subband reports circulation twice, and reporting repeating query (RC, reporting cycle) is WB-SB1-SB2-SB3-SB1-SB2-SB3-WB-SB1 ...
And in order to reduce the cost of terminal, to be applicable to new application scenarios, as the application scenarios of low-cost machine communication subscriber equipment Low Cost MTC UE (Low Cost Machine Type Communication User Equipment), in this application scenarios, the bandwidth of operation of meeting reduction Low Cost MTC UE, maximum transmission power, peak data rate etc., to reduce cost.And the bandwidth of operation of reduction Low Cost MTC UE, make exactly Low Cost MTC UE in a less arrowband, to carry out transfer of data, it is one of major programme reducing Low Cost MTC UE cost, and in order to support the low-cost machine communication subscriber equipment that is operated in arrowband as this in Low Cost MTC UE in wide-band communication system, need in the spectral bandwidth of whole wide-band communication system, mark off the bandwidth of operation (it is arrowband) that one or more low-cost machine communication subscriber equipment that is operated in arrowband is supported, for the low-cost machine communication subscriber equipment that is operated in arrowband, access and transfer of data.And for being operated in the low-cost machine communication subscriber equipment of arrowband, if adopt cycle broadband to report pattern, can only report the corresponding channel condition information in whole arrowband, make the reference value of the channel condition information that reports not high.If the cycle is chosen report pattern frequently, this arrowband is carried out to the division of a plurality of part bandwidth, and respectively every a part of bandwidth is divided, and obtain a plurality of subbands, the words of selecting channel condition information corresponding to optimal sub-band to report, because the spectral range of arrowband is less, number of sub-bands is few, thereby existing UE selects the low-cost machine communication subscriber equipment that reports mode not to be suitable for to be operated in arrowband of optimal sub-band.
Summary of the invention
The technical problem that the application mainly solves is to provide a kind of low-cost machine communication subscriber equipment and channel state information reporting method, base station and channel condition information processing method execution mode, the most detailed sub-band channel state information can be sent to base station, thereby improved the reference value of the channel condition information reporting, and adapted to the demand of the low-cost machine communication subscriber equipment that is operated in arrowband.
The application is that the technical scheme that technical solution problem adopts is: the channel state information reporting method that a kind of low-cost machine communication subscriber equipment is provided, the method comprises the following steps: obtain the corresponding sub-band channel state information of each subband of a plurality of subbands in the corresponding broad-band channel state information of bandwidth of operation of the arrowband communicating for base station and low-cost machine communication subscriber equipment and bandwidth of operation, bandwidth of operation is less than base station and common low-cost machine communication subscriber equipment communicates used bandwidth; Report broad-band channel state information and sub-band channel state information to base station.
The application is that another technical scheme that technical solution problem adopts is: the channel condition information processing method that a kind of base station is provided, the method comprises the following steps: the corresponding sub-band channel state information of each subband of a plurality of subbands in low-cost machine communication subscriber equipment receives the corresponding broad-band channel state information of bandwidth of operation of the arrowband communicating for base station and low-cost machine communication subscriber equipment and bandwidth of operation, and bandwidth of operation is less than base station and common low-cost machine communication subscriber equipment communicates used bandwidth; According to broad-band channel state information and sub-band channel state information, carry out frequency selection scheduling.
The application is that another technical scheme that technical solution problem adopts is: a kind of low-cost machine communication subscriber equipment is provided, base station and low-cost machine communication communications of user equipment, the bandwidth of operation of the arrowband that base station and low-cost machine communication subscriber equipment communicate is divided into a plurality of subbands, this low cost machine communication subscriber equipment comprises: channel condition information acquisition module, for obtaining the corresponding broad-band channel state information of bandwidth of operation and the corresponding sub-band channel state information of each subband of a plurality of subband; Reporting source of channel state information module, for reporting broad-band channel state information and sub-band channel state information to base station.
The application is that another technical scheme that technical solution problem adopts is: a kind of base station is provided, base station and low-cost machine communication communications of user equipment, base station and low-cost machine communication subscriber equipment are divided into a plurality of subbands with the bandwidth of operation of the arrowband communicating, this base station comprises: channel condition information receiver module, for receiving the corresponding broad-band channel state information of bandwidth of operation and the corresponding sub-band channel state information of each subband of a plurality of subband from low-cost machine communication subscriber equipment; Channel condition information processing module, for carrying out frequency selection scheduling according to broad-band channel state information and sub-band channel state information.
Be different from the situation of prior art, embodiment of the present invention is by reporting the corresponding broad-band channel state information of bandwidth of operation and dividing a plurality of subbands form corresponding sub-band channel state information separately by bandwidth of operation, by reporting all sub-band channel state informations to base station, thereby improved the reference value of the channel condition information reporting, and adapted to the demand of the low-cost machine communication subscriber equipment that is operated in arrowband.
Accompanying drawing explanation
Fig. 1 is the sequential schematic diagram that in prior art, cycle broadband reports pattern;
Fig. 2 is the sequential schematic diagram that in prior art, the cycle is chosen report pattern frequently;
Fig. 3 is the structural representation of the cycle of prior art frequently choosing broadband in report pattern;
Fig. 4 is according to the flow chart of the channel state information reporting method of the low-cost machine communication subscriber equipment of first embodiment of the invention;
Fig. 5 is according to the structural representation of the bandwidth of operation of the communication system of first embodiment of the invention;
Fig. 6 is according to the sequential schematic diagram of the channel state information reporting method of the low-cost machine communication subscriber equipment of first embodiment of the invention;
Fig. 7 is the sequential schematic diagram of channel state information reporting method of the low-cost machine communication subscriber equipment of one alternate embodiment according to the present invention;
Fig. 8 is the sequential schematic diagram of channel state information reporting method of the low-cost machine communication subscriber equipment of the another alternate embodiment according to the present invention;
Fig. 9 is the sequential schematic diagram of channel state information reporting method of the low-cost machine communication subscriber equipment of the another alternate embodiment according to the present invention;
Figure 10 is the sequential schematic diagram of channel state information reporting method of the low-cost machine communication subscriber equipment of the another alternate embodiment according to the present invention;
Figure 11 is the sequential schematic diagram of channel state information reporting method of the low-cost machine communication subscriber equipment of the another alternate embodiment according to the present invention;
Figure 12 is the sequential schematic diagram of channel state information reporting method of the low-cost machine communication subscriber equipment of the another alternate embodiment according to the present invention;
Figure 13 is according to the flow chart of the channel condition information processing method of the base station of second embodiment of the invention;
Figure 14 is the system configuration schematic diagram according to the communication system of third embodiment of the invention.
Embodiment
The embodiment of the present invention provides a kind of channel state information reporting method of low-cost machine communication subscriber equipment, the method comprises the following steps: obtain the corresponding sub-band channel state information of each subband of a plurality of subbands in the corresponding broad-band channel state information of bandwidth of operation of the arrowband communicating for base station and low-cost machine communication subscriber equipment and bandwidth of operation, bandwidth of operation is less than base station and common low-cost machine communication subscriber equipment communicates used bandwidth; Report broad-band channel state information and sub-band channel state information to base station.
The embodiment of the present invention further provides a kind of channel condition information processing method of base station, the method comprises the following steps: the corresponding sub-band channel state information of each subband of a plurality of subbands in low-cost machine communication subscriber equipment receives the corresponding broad-band channel state information of bandwidth of operation of the arrowband communicating for base station and low-cost machine communication subscriber equipment and bandwidth of operation, and this bandwidth of operation is less than base station and common low-cost machine communication subscriber equipment communicates used bandwidth; According to broad-band channel state information and sub-band channel state information, carry out frequency selection scheduling.
The embodiment of the present invention further provides a kind of low-cost machine communication subscriber equipment, base station and low-cost machine communication communications of user equipment, the bandwidth of operation of the arrowband that base station and low-cost machine communication subscriber equipment communicate is divided into a plurality of subbands, this low cost machine communication subscriber equipment comprises: channel condition information acquisition module, for obtaining the corresponding broad-band channel state information of bandwidth of operation and the corresponding sub-band channel state information of each subband of a plurality of subband; Reporting source of channel state information module, for reporting broad-band channel state information and sub-band channel state information to base station.
The embodiment of the present invention further provides a kind of base station, base station and low-cost machine communication communications of user equipment, the low-cost machine communication subscriber equipment in base station is divided into a plurality of subbands with the bandwidth of operation of the arrowband communicating, this base station comprises: channel condition information receiver module, for receiving the corresponding broad-band channel state information of bandwidth of operation and the corresponding sub-band channel state information of each subband of a plurality of subband from low-cost machine communication subscriber equipment; Channel condition information processing module, for carrying out frequency selection scheduling according to broad-band channel state information and sub-band channel state information.
Pass through technique scheme, the low-cost machine communication subscriber equipment of the embodiment of the present invention and channel state information reporting method, base station and channel condition information processing method by report the corresponding broad-band channel state information of bandwidth of operation and by bandwidth of operation divide form a plurality of subbands separately corresponding sub-band channel state information to base station, thereby improved the reference value of the channel condition information reporting, and adapted to the demand of the low-cost machine communication subscriber equipment that is operated in arrowband.
Below in conjunction with specific embodiment, the low-cost machine communication subscriber equipment of the embodiment of the present invention and channel state information reporting method, base station and channel condition information processing method are described in detail.
First refer to Fig. 4, Fig. 4 is according to the flow chart of the channel state information reporting method of the low-cost machine communication subscriber equipment of first embodiment of the invention.As shown in Figure 4, the channel state information reporting method of low-cost machine communication subscriber equipment of the present invention comprises the following steps:
Step 201: obtain the corresponding sub-band channel state information of each subband of a plurality of subbands in the corresponding broad-band channel state information of bandwidth of operation of the arrowband communicating for base station and low-cost machine communication subscriber equipment and bandwidth of operation.
Step 202: report broad-band channel state information and sub-band channel state information.
And referring to Fig. 5, Fig. 5 is the structural representation of the bandwidth of operation that communicates according to the base station of first embodiment of the invention and low-cost machine communication subscriber equipment.As shown in Figure 5, in the present embodiment, communicate by letter with low-cost machine communication subscriber equipment (not illustrating) in base station (not illustrating), bandwidth of operation 30 is directly divided into a plurality of subband 301-306, and low-cost machine communication subscriber equipment utilizes the plurality of subband 301-306 and base station to carry out data access and transfer of data.
And step 201 and step 202 are all carried out in low-cost machine communication subscriber equipment, in step 201, when low-cost machine communication subscriber equipment need to be to base station reporting status information of channel, can adopt the prior aries such as measuring reference signals, Interpolate estimation to obtain the corresponding broad-band channel state information of bandwidth of operation and the corresponding sub-band channel state information of each subband.
In step 202, low-cost machine communication subscriber equipment for example can report broad-band channel state information and sub-band channel state information to base station by PUCCH.
In the present embodiment, the communication system institute assignment bandwidth that low-cost machine communication subscriber equipment is supported is preferably arrowband (being that it is a kind of low-cost machine communication subscriber equipment that is operated in arrowband), and its bandwidth of operation is less than base station and common low-cost machine communication subscriber equipment communicates used bandwidth.And in the present invention, support performance is directly divided into a plurality of subbands at the bandwidth of operation of the low-cost machine communication subscriber equipment of arrowband.Because the bandwidth of this bandwidth of operation is less, number of sub-bands is few, therefore in the present embodiment, the corresponding channel condition information of all subbands is reported in the lump together with the corresponding broad-band channel state information of bandwidth of operation, the most detailed sub-band channel state information can be sent, thereby improved the reference value of the channel condition information reporting, and adapted to the demand of the low-cost machine communication subscriber equipment that is operated in arrowband.
Generally speaking, in above-mentioned steps 202, can report broad-band channel state information and sub-band channel state information by default sequence, and in alternative of the present invention, also can report broad-band channel state information and sub-band channel state information by preset order, thereby further meet the privacy requirements of communication.Below by referring to Fig. 6 to Fig. 8 to reporting the execution mode of broad-band channel state information and sub-band channel state information to be described in detail by default sequence and by preset order.
Refer to Fig. 6, Fig. 6 is according to the sequential schematic diagram of the channel state information reporting method of the low-cost machine communication subscriber equipment of first embodiment of the invention.As shown in Figure 6, Np is report cycle, in step 202, the per interval Np of low-cost machine communication subscriber equipment sequentially reports broad-band channel state information WB, sub-band channel state information SB1, sub-band channel state information SB2, sub-band channel state information SB3, sub-band channel state information SB4, sub-band channel state information SB5, sub-band channel state information SB6:WB-SB1-SB3-SB5-SB2-SB4-SB6 to base station.
Wherein, sub-band channel state information SB1 is the corresponding channel condition information of subband 301, sub-band channel state information SB2 is the corresponding channel condition information of subband 301, sub-band channel state information SB3 is the corresponding channel condition information of subband 301, sub-band channel state information SB4 is the corresponding channel condition information of subband 301, sub-band channel state information SB5 is the corresponding channel condition information of subband 301, and sub-band channel state information SB6 is the corresponding channel condition information of subband 301.As shown in Figure 6, in the present embodiment, by default sequence, report broad-band channel state information and sub-band channel state information, base station without it is resequenced, can be suitable for needing quick data transfering and the application scenarios not high to data security requirement after receiving above-mentioned information.
In addition, owing to having reported all sub-band channel state information SB1-SB6, and the channel between subband has certain correlation, thus in step 202, can consider to adjust subband report order, by preset order, report broad-band channel state information and sub-band channel state information to base station.
For example refer to Fig. 7, Fig. 7 is the sequential schematic diagram of channel state information reporting method of the low-cost machine communication subscriber equipment of one alternate embodiment according to the present invention.As shown in Figure 7, can report successively broad-band channel state information, the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of even number subband: WB-SB1-SB3-SB5-SB2-SB4-SB6.
And referring to Fig. 8, Fig. 8 is the channel state information reporting method schematic diagram of the low-cost machine communication subscriber equipment of another alternate embodiment according to the present invention.As shown in Figure 8, can report successively broad-band channel state information, the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of odd number subband: WB-SB2-SB4-SB6-SB1-SB3-SB5.
Above-mentioned, with predefined procedure, report broad-band channel state information and sub-band channel state information to the step of base station, above-mentioned listed preset order is the preferred embodiment of the present invention only, predefined procedure can be adjusted according to actual needs, thereby reports with various any setting preset order.
It should be noted that; this preset order need to be unified with base station; to guarantee that base station is after getting broad-band channel state information and sub-band channel state information; can reduce sequence to it, thereby get broad-band channel state information and the sub-band channel state information of arranging by default sequence.
Wherein, in one embodiment of the present invention, preset order can be base station and makes an appointment by agreement and low-cost machine communication subscriber equipment; In another embodiment of the present invention, can from base station, receive physical layer signaling or high-level signaling to obtain preset order; In another embodiment of the present invention, can, in step 202, further report the subband numbering corresponding with sub-band channel state information to base station.
Wherein, report the subband numbering corresponding with sub-band channel state information to the step of base station, can after all sub-band channel state information reports, report again subband numbering, or more can after each sub-band channel state information report, follow the subband numbering that reports this sub-band channel state information.Following described in the latter reports the mode of subband numbering to carry out in cycle Np as shown in Figure 6, for the former, without spending extra time, is the mode that preferably reports of the present invention.
In addition, the bandwidth of the bandwidth of operation of supporting due to low-cost machine communication subscriber equipment is less, and channel between adjacent sub-bands and even between subband and broadband has certain correlation, thus when reducing reporting status information of channel needed bit number, the mode that can adopt difference to report.Below will to difference, report mode to be described in detail referring to Fig. 9 to Figure 12.
Below refer to Fig. 9, Fig. 9 is the channel state information reporting method schematic diagram of the low-cost machine communication subscriber equipment of another alternate embodiment according to the present invention.As shown in Figure 9, in step 202, can report respectively the difference result of broad-band channel state information and each sub-band channel state information and broad-band channel state information: WB-(SB1-WB)-(SB2-WB)-(SB3-WB)-(SB4-WB)-(SB5-WB)-(SB6-WB).
Refer to Figure 10, Figure 10 is the channel state information reporting method schematic diagram of the low-cost machine communication subscriber equipment of another alternate embodiment according to the present invention.As shown in figure 10, this step 202 specifically can be: the difference result that reports broad-band channel state information, the corresponding sub-band channel state information of first subband and the corresponding sub-band channel state information of other subbands and the corresponding sub-band channel state information of this first subband: WB-SB1-(SB2-SB1)-and (SB3-SB1)-(SB4-SB1)-(SB5-SB1)-(SB6-SB1).Wherein, in the present embodiment, selected to report the corresponding sub-band channel state information of first subband as explanation, in actual applications, can report respectively the difference result of broad-band channel state information, the corresponding sub-band channel state information of arbitrary subband and the corresponding sub-band channel state information of other subbands and the corresponding sub-band channel state information of arbitrary subband to base station.
And referring to Figure 11, Figure 11 is the sequential schematic diagram of channel state information reporting method of the low-cost machine communication subscriber equipment of another alternate embodiment according to the present invention.As shown in figure 11, this step 202 specifically can be: the difference result that reports broad-band channel state information, the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of adjacent odd number subband: WB-SB1-(SB2-SB1)-SB3-(SB4-SB3)-SB5-(SB6-SB5).
And referring to Figure 12, Figure 12 is the sequential schematic diagram of channel state information reporting method of the low-cost machine communication subscriber equipment of another alternate embodiment according to the present invention.As shown in figure 12, this step 202 specifically can be: the difference result that reports broad-band channel state information, the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of neighbouring even-numbered subband: WB-(SB2-SB1)-SB2-(SB3-SB2)-SB4-SB5-(SB6-SB5).
Needed bit number when the various difference of disclosed above report mode effectively to reduce reporting status information of channel, thus the load capacity of channel reduced.
Below please with further reference to Figure 13, Figure 13 is according to the flow chart of the channel condition information processing method of the base station of second embodiment of the invention, second embodiment of the invention is corresponding with the first above-mentioned execution mode, be described in further detail base station and received the corresponding broad-band channel state information of bandwidth of operation and the corresponding sub-band channel state information of each subband, and the action of doing according to those information after receiving.As shown in figure 13, the channel condition information processing method of base station of the present invention comprises the following steps:
Step 401: the corresponding sub-band channel state information of each subband of a plurality of subbands in low-cost machine communication subscriber equipment receives the corresponding broad-band channel state information of bandwidth of operation of the arrowband communicating for base station and low-cost machine communication subscriber equipment and bandwidth of operation.
Step 402: carry out frequency selection scheduling according to broad-band channel state information and sub-band channel state information.
Above-mentioned step 401 and step 402 are all carried out in base station, in step 401, base station receives the corresponding broad-band channel state information of bandwidth of operation and the corresponding sub-band channel state information of each subband, for example, base station can receive broad-band channel state information and sub-band channel state information by PUCCH.It should be noted that, corresponding with the first embodiment, in step 401, base station, after receiving the broad-band channel state information and each subband corresponding sub-band channel state information of low-cost machine communication subscriber equipment with preset order transmission, can restore broad-band channel state information and the corresponding sub-band channel state information of each subband of arranging with default sequence according to this preset order.
For example, if receive WB-SB1-SB2-SB3-SB4-SB5-SB6, because broad-band channel state information and the corresponding sub-band channel state information of each subband are arranged by default sequence, without processing, can directly utilize these frame data to carry out the processing of frequency selection scheduling.
If receive sub-band channel state information, according to other that are different from above-mentioned default sequence, sequentially arrange, need antithetical phrase band channel condition information to rearrange, specific as follows:
If receive broad-band channel state information, the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of even number subband: WB-SB1-SB3-SB5-SB2-SB4-SB6 or broad-band channel state information, the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of odd number subband WB-SB2-SB4-SB6-SB1-SB3-SB5, need to resequence according to preset order, to get WB-SB1-SB3-SB5-SB2-SB4-SB6 in base station side.
Wherein, above-mentioned preset order must be made an appointment with low-cost machine communication subscriber equipment, and in an alternate embodiment of the present invention, preset order is to make an appointment by agreement and low-cost machine communication subscriber equipment in base station; In another embodiment of the present invention, the pre-recorded preset order in base station; In another embodiment of the present invention, base station further receives the subband numbering corresponding with sub-band channel state information from low-cost machine communication subscriber equipment, and arranges described sub-band channel state information according to described subband numbering.
If low-cost machine communication subscriber equipment is needed bit number while reducing reporting status information of channel, the mode that adopts difference to report reports.Need to carry out data reduction according to difference result and process, particularly:
If receive broad-band channel state information, the difference result of the corresponding sub-band channel state information of the corresponding channel condition information of arbitrary subband and other subbands and the corresponding channel condition information of this arbitrary subband, for example: if receive broad-band channel state information, the difference result of the corresponding sub-band channel state information of first subband and the corresponding sub-band channel state information of other subbands and the corresponding sub-band channel state information of first subband: WB-SB1-(SB2-SB1)-(SB3-SB1)-(SB4-SB1)-(SB5-SB1)-(SB6-SB1), need obtain respectively each sub-band channel state information according to broad-band channel state information and difference result, thereby make base station get WB-SB1-SB2-SB3-SB4-SB5-SB6.
If receive broad-band channel state information, the difference result of the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of adjacent odd number subband: WB-SB1-(SB2-SB1)-SB3-(SB4-SB3)-SB5-(SB6-SB5), need be according to broad-band channel state information, the corresponding sub-band channel state information of odd number subband and difference result are obtained respectively the corresponding sub-band channel state information of even number subband, thereby make base station get WB-SB1-SB2-SB3-SB4-SB5-SB6.
If receive the difference result of broad-band channel state information, the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of neighbouring even-numbered subband: WB-(SB2-SB1)-SB2-(SB3-SB2)-SB4-SB5-(SB6-SB5).Need obtain respectively the corresponding sub-band channel state information of odd number subband according to broad-band channel state information, the corresponding sub-band channel state information of even number subband and difference result, thereby make base station get WB-SB1-SB2-SB3-SB4-SB5-SB6.
In step 402, base station is after receiving broad-band channel state information and sub-band channel state information, because sub-band channel state information comprises the corresponding channel condition information of all subbands, optimum sub-band channel can be calculated according to the corresponding channel condition information of these all subbands and broad-band channel state information in base station, and select this sub-band channel to carry out data access and transfer of data, thereby realize selection scheduling frequently, process.
Finally refer to Figure 14, Figure 14 is the system configuration schematic diagram according to the communication system of third embodiment of the invention.As shown in figure 14, communication system of the present invention comprises low-cost machine communication subscriber equipment 50 and base station 60, and wherein, base station 60 is divided into a plurality of subbands with the bandwidth of operation of the arrowband that low-cost machine communication subscriber equipment 50 communicates.
Low-cost machine communication subscriber equipment 50 comprises: channel condition information acquisition module 504, for obtaining the corresponding broad-band channel state information of bandwidth of operation and the corresponding sub-band channel state information of each subband; Reporting source of channel state information module 501, for reporting broad-band channel state information and sub-band channel state information to base station.
Base station 60 comprises: channel condition information receiver module 601, for receiving the corresponding broad-band channel state information of bandwidth of operation and the corresponding sub-band channel state information of each subband; Channel condition information processing module 602, for carrying out the processing of frequency selection scheduling according to broad-band channel state information and sub-band channel state information.
Wherein, above-mentioned low-cost machine communication subscriber equipment 50 and the specific implementation of each functional module in base station 60 have been described in detail in the embodiment shown in Fig. 4 to 12, do not repeat them here.
Therefore, by above-mentioned disclosure, the present invention has realized: by reporting all sub-band channel state informations, thereby improved the reference value of the channel condition information reporting, and adapted to the demand of the low-cost machine communication subscriber equipment that is operated in arrowband.
In the several execution modes that provide in the application, should be understood that, disclosed system, apparatus and method, can realize by another way.For example, device embodiment execution mode described above is only schematic, for example, the division of described module or unit, be only that a kind of logic function is divided, during actual realization, can have other dividing mode, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.
The described unit as separating component explanation can or can not be also physically to separate, and the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in a plurality of network element.Can select according to the actual needs some or all of unit wherein to realize the object of the present embodiment execution mode scheme.
In addition, each functional unit in each embodiment execution mode of the application can be integrated in a processing unit, can be also that the independent physics of unit exists, and also can be integrated in a unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, and also can adopt the form of SFU software functional unit to realize.
If the form of SFU software functional unit of usining described integrated unit realizes and during as production marketing independently or use, can be stored in a computer read/write memory medium.Understanding based on such, the all or part of of the part that the application's technical scheme contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) or processor (processor) carry out all or part of step of method described in each embodiment execution mode of the application.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CDs.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (40)
1. a channel state information reporting method for low-cost machine communication subscriber equipment, is characterized in that, said method comprising the steps of:
Obtain the corresponding sub-band channel state information of each subband of a plurality of subbands in the corresponding broad-band channel state information of bandwidth of operation of the arrowband communicating for base station and described low-cost machine communication subscriber equipment and described bandwidth of operation, described bandwidth of operation is less than described base station and described common low-cost machine communication subscriber equipment communicates used bandwidth;
Report described broad-band channel state information and described sub-band channel state information to described base station.
2. method according to claim 1, it is characterized in that, described in report described broad-band channel state information and described sub-band channel state information to described base station to comprise: by preset order, report described broad-band channel state information and described sub-band channel state information to described base station.
3. method according to claim 2, is characterized in that, described preset order is to make an appointment by agreement and described low-cost machine communication subscriber equipment in described base station.
4. method according to claim 2, is characterized in that, also comprises: from described base station, receive physical layer signaling or high-level signaling to obtain described preset order.
5. method according to claim 2, it is characterized in that, describedly by preset order, report described broad-band channel state information and described sub-band channel state information to described base station further to comprise: report the subband numbering corresponding with described sub-band channel state information to described base station.
6. method according to claim 2, it is characterized in that, describedly by preset order, report described broad-band channel state information and described sub-band channel state information to described base station to comprise: to report successively described broad-band channel state information, the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of even number subband, or report successively described broad-band channel state information, the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of odd number subband to described base station.
7. method according to claim 1, it is characterized in that, described in report described broad-band channel state information and described sub-band channel state information to described base station to comprise: the difference result that reports respectively described broad-band channel state information and described sub-band channel state information and described broad-band channel state information is described base station extremely.
8. method according to claim 1, it is characterized in that, described in report described broad-band channel state information and described sub-band channel state information to described base station to comprise: the difference result that reports respectively described broad-band channel state information, the corresponding sub-band channel state information of arbitrary subband and other sub-band channel state informations and the corresponding sub-band channel state information of described arbitrary subband is described base station extremely.
9. method according to claim 1, it is characterized in that, described in report described broad-band channel state information and described sub-band channel state information to described base station to comprise: the difference result that reports the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of adjacent odd number subband is described base station extremely.
10. method according to claim 1, it is characterized in that, described in report described broad-band channel state information and described sub-band channel state information to described base station to comprise: the difference result that reports the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of neighbouring even-numbered subband is described base station extremely.
The channel condition information processing method of 11. 1 kinds of base stations, is characterized in that, said method comprising the steps of:
The corresponding sub-band channel state information of each subband of a plurality of subbands in low-cost machine communication subscriber equipment receives the corresponding broad-band channel state information of bandwidth of operation of the arrowband communicating for base station and low-cost machine communication subscriber equipment and described bandwidth of operation, described bandwidth of operation is less than described base station and common low-cost machine communication subscriber equipment communicates used bandwidth;
According to described broad-band channel state information and described sub-band channel state information, carry out frequency selection scheduling.
12. methods according to claim 11, it is characterized in that, describedly from described low-cost machine communication subscriber equipment, receive the corresponding broad-band channel state information of described bandwidth of operation and the corresponding sub-band channel state information of each subband comprises: further the described sub-band channel state information receiving is arranged by preset order.
13. methods according to claim 12, is characterized in that, described preset order is to make an appointment by agreement and described low-cost machine communication subscriber equipment in described base station.
14. methods according to claim 12, is characterized in that, pre-recorded described preset order.
15. methods according to claim 12, it is characterized in that, described from described low-cost machine communication subscriber equipment receive the corresponding broad-band channel state information of described bandwidth of operation and described in each corresponding sub-band channel state information of subband further comprise: from described low-cost machine communication subscriber equipment, receive the subband numbering corresponding with described sub-band channel state information, and according to the described sub-band channel state information of described subband numbering arrangement.
16. methods according to claim 12, it is characterized in that, described from described low-cost machine communication subscriber equipment receive the corresponding broad-band channel state information of described bandwidth of operation and described in each corresponding sub-band channel state information of subband comprise: from described low-cost machine communication subscriber equipment, receive described broad-band channel state information successively, the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of even number subband, or from described low-cost machine communication subscriber equipment, receive described broad-band channel state information successively, the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of odd number subband.
17. methods according to claim 10, it is characterized in that, described from described low-cost machine communication subscriber equipment receive the corresponding broad-band channel state information of described bandwidth of operation and described in each corresponding sub-band channel state information of subband comprise: from described low-cost machine communication subscriber equipment, receive described broad-band channel state information and the difference result of sub-band channel state information and described broad-band channel state information described in each respectively, and obtain respectively each sub-band channel state information according to described broad-band channel state information and described difference result.
18. methods according to claim 10, it is characterized in that, described from described low-cost machine communication subscriber equipment receive the corresponding broad-band channel state information of described bandwidth of operation and described in each corresponding sub-band channel state information of subband comprise: from described low-cost machine communication subscriber equipment, receive described broad-band channel state information respectively, the difference result of the corresponding sub-band channel state information of the corresponding channel condition information of arbitrary subband and other subbands and the corresponding channel condition information of described arbitrary subband, and obtain the described corresponding sub-band channel state information of other subbands according to described difference result and the corresponding channel condition information of described arbitrary subband.
19. methods according to claim 10, it is characterized in that, described from described low-cost machine communication subscriber equipment receive the corresponding broad-band channel state information of described bandwidth of operation and described in each corresponding sub-band channel state information of subband comprise: the difference result that receives the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of adjacent odd number subband from described low-cost machine communication subscriber equipment, and according to the corresponding sub-band channel state information of even number subband described in described difference result and the corresponding sub-band channel state information acquisition of described adjacent odd number subband.
20. methods according to claim 10, it is characterized in that, described from described low-cost machine communication subscriber equipment receive the corresponding broad-band channel state information of described bandwidth of operation and described in each corresponding sub-band channel state information of subband comprise: the difference result that receives the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of neighbouring even-numbered subband from described low-cost machine communication subscriber equipment, and according to the corresponding sub-band channel state information of odd number subband described in described difference result and the corresponding sub-band channel state information acquisition of described even number subband.
21. 1 kinds of low-cost machine communication subscriber equipmenies, base station and described low-cost machine communication communications of user equipment, it is characterized in that, the bandwidth of operation of the arrowband that described base station and described low-cost machine communication subscriber equipment communicate is divided into a plurality of subbands, and described low-cost machine communication subscriber equipment comprises:
Channel condition information acquisition module, for obtaining the corresponding broad-band channel state information of described bandwidth of operation and the corresponding sub-band channel state information of described each subband of a plurality of subband;
Reporting source of channel state information module, for reporting described broad-band channel state information and described sub-band channel state information to described base station.
22. low-cost machine communication subscriber equipmenies according to claim 21, is characterized in that, described reporting source of channel state information module is for reporting described broad-band channel state information and described sub-band channel state information to described base station by preset order.
23. low-cost machine communication subscriber equipmenies according to claim 22, is characterized in that, described preset order is to make an appointment by agreement and described low-cost machine communication subscriber equipment in described base station.
24. low-cost machine communication subscriber equipmenies according to claim 22, is characterized in that, channel condition information acquisition module is further used for receiving from described base station physical layer signaling or high-level signaling to obtain described preset order.
25. low-cost machine communication subscriber equipmenies according to claim 22, is characterized in that, described reporting source of channel state information module further reports the subband numbering corresponding with described sub-band channel state information to described base station.
26. low-cost machine communication subscriber equipmenies according to claim 22, it is characterized in that, described reporting source of channel state information module is used for reporting successively described broad-band channel state information, the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of even number subband to described base station, or reports successively described broad-band channel state information, the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of odd number subband to described base station.
27. low-cost machine communication subscriber equipmenies according to claim 20, it is characterized in that, described reporting source of channel state information module is for reporting described broad-band channel state information respectively and the difference result described base station extremely of sub-band channel state information and described broad-band channel state information described in each.
28. low-cost machine communication subscriber equipmenies according to claim 20, it is characterized in that, described reporting source of channel state information module is for reporting respectively the difference result of described broad-band channel state information, the corresponding sub-band channel state information of arbitrary subband and the corresponding sub-band channel state information of other subbands and the corresponding sub-band channel state information of described arbitrary subband to described base station.
29. low-cost machine communication subscriber equipmenies according to claim 20, it is characterized in that, described reporting source of channel state information module is for reporting the difference result of the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of adjacent odd number subband to described base station.
30. low-cost machine communication subscriber equipmenies according to claim 20, it is characterized in that, described reporting source of channel state information module is for reporting the difference result of the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of neighbouring even-numbered subband to described base station.
31. 1 kinds of base stations, described base station and low-cost machine communication communications of user equipment, is characterized in that, and described base station and described low-cost machine communication subscriber equipment are divided into a plurality of subbands with the bandwidth of operation of the arrowband communicating, and described base station comprises:
Channel condition information receiver module, for receiving the corresponding broad-band channel state information of described bandwidth of operation and the corresponding sub-band channel state information of described each subband of a plurality of subband from described low-cost machine communication subscriber equipment;
Channel condition information processing module, for carrying out frequency selection scheduling according to described broad-band channel state information and described sub-band channel state information.
32. base stations according to claim 31, channel condition information receiver module is further used for the described sub-band channel state information receiving to arrange by preset order.
33. base stations according to claim 32, is characterized in that, described preset order is to make an appointment by agreement and described low-cost machine communication subscriber equipment in described base station.
34. base stations according to claim 32, is characterized in that, channel condition information receiver module is further used for pre-recorded described preset order.
35. base stations according to claim 32, it is characterized in that, described channel condition information receiver module is further used for receiving the subband numbering corresponding with described sub-band channel state information from described low-cost machine communication subscriber equipment, and arranges described sub-band channel state information according to described subband numbering.
36. base stations according to claim 32, it is characterized in that, described channel condition information receiver module is used for from described low-cost machine communication subscriber equipment, receiving described broad-band channel state information, the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of even number subband successively, or from described low-cost machine communication subscriber equipment, receives described broad-band channel state information, the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of odd number subband successively.
37. base stations according to claim 31, it is characterized in that, described channel condition information receiver module is for receiving described broad-band channel state information and the difference result of sub-band channel state information and described broad-band channel state information described in each from described low-cost machine communication subscriber equipment respectively, and obtains respectively each sub-band channel state information according to described broad-band channel state information and described difference result.
38. base stations according to claim 31, it is characterized in that, described channel condition information receiver module is used for from described low-cost machine communication subscriber equipment, receiving respectively the difference result of described broad-band channel state information, the corresponding channel condition information of arbitrary subband and the corresponding sub-band channel state information of other subbands and the corresponding channel condition information of described arbitrary subband, and obtains the described corresponding sub-band channel state information of other subbands according to described difference result and the corresponding channel condition information of described arbitrary subband.
39. base stations according to claim 31, it is characterized in that, described channel condition information receiver module is used for receiving from described low-cost machine communication subscriber equipment the difference result of the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of adjacent odd number subband, and according to the corresponding sub-band channel state information of even number subband described in described difference result and the corresponding sub-band channel state information acquisition of described adjacent odd number subband.
40. base stations according to claim 31, it is characterized in that, described channel condition information receiver module is used for receiving from described low-cost machine communication subscriber equipment the difference result of the corresponding sub-band channel state information of even number subband and the corresponding sub-band channel state information of odd number subband and the corresponding sub-band channel state information of neighbouring even-numbered subband, and according to the corresponding sub-band channel state information of odd number subband described in described difference result and the corresponding sub-band channel state information acquisition of described even number subband.
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| CN201210259426.XA CN103580783B (en) | 2012-07-20 | 2012-07-20 | Low-cost machine communication user equipment and channel state information reporting method, base station and channel condition information processing method |
| PCT/CN2013/079829 WO2014012524A1 (en) | 2012-07-20 | 2013-07-22 | Low cost machine type communication user equipment, reporting method of channel state information, base station and processing method of channel state information |
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| WO2014012524A1 (en) | 2014-01-23 |
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