CN102148666B - Channel information feedback method, terminal and base station - Google Patents
Channel information feedback method, terminal and base station Download PDFInfo
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- CN102148666B CN102148666B CN201010107548.8A CN201010107548A CN102148666B CN 102148666 B CN102148666 B CN 102148666B CN 201010107548 A CN201010107548 A CN 201010107548A CN 102148666 B CN102148666 B CN 102148666B
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Abstract
The embodiment of the invention discloses a channel information feedback method, a terminal and a base station. The method comprises the steps as follows: channel information without optimal subband position is reported to a base station; the channel information without the optimal subband position I comprises a wideband channel quality indication CQI and the CQI of the optimal subbands in each bandwidth; and the channel information with the optimal subband position is reported to the base station when a reconfiguration condition is realized. The channel information with the optimal subband position comprises the wideband CQI, the CQI of the optimal subbands in each bandwidth, and the optimal subband position. The invention is suitable for a terminal to implement channel information feedback to the base station.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of channel information feedback method, terminal and base station.
Background technology
At LTE-A (Long Term Evolut ion-Advanced, senior Long Term Evolution) in system, in the process that terminal and base station communicate, terminal need to be to base station feedback channel condition information, MCS (the Modulation and CodingScheme that downlink communication is used is determined according to the channel condition information of terminal feedback in base station, modulation coding mode), to serve better downlink communication next time.
In indirect information feedback, terminal can comprise CQI (Channel Quality Information, channel quality indication) in the information of base station feedback.Terminal estimates SINR (Signal to Interference plus Noise Ratio according to the descending channel information being received by base station, signal and interference and noise ratio), according to SINR, calculate CQI value, then in uplink communication, CQI value is reported to base station, MCS is determined according to this CQI value in base station.
The broadband (WB, Wideband) that is certain terminal distribution in frequency can be divided into a plurality of part bandwidth (BP, Bandwidth part), and each part bandwidth comprises a plurality of subbands (SB, Subband).In the prior art, terminal, when reporting CQI to base station, reports in circulation at each, and terminal need to be by the CQI in this broadband, and in each BP, the CQI of optimum subband and the positional information of optimum subband in BP report base station.
In realizing process of the present invention, inventor finds that in prior art, at least there are the following problems:
At each, report in circulation, terminal all needs the positional information in BP by optimum subband to report base station, and the expense of feedback of channel information is larger.
Summary of the invention
Embodiments of the invention provide a kind of channel information feedback method, terminal and base station, can reduce feedback of channel information expense.
The technical scheme that the embodiment of the present invention adopts is:
A channel information feedback method, comprising:
To base station, report the channel information that does not carry optimum subband position, the described channel information that does not carry optimum subband position comprises the channel quality indicator (CQI) in broadband, and the CQI of optimum subband in each several part bandwidth;
To base station, report the channel information that carries optimum subband position while reshuffling condition reaching, described in carry optimum subband position channel information comprise the CQI of optimum subband in the CQI, each several part bandwidth in broadband and optimum subband position
A channel information feedback method, comprising:
The channel information that does not carry optimum subband position that receiving terminal reports, the described channel information that does not carry optimum subband position comprises the CQI in broadband, and the CQI of optimum subband in each several part bandwidth;
According to the described channel information that does not carry optimum subband position, and the optimum subband position that reports of terminal last time, determine the modulation coding mode of down channel.
A channel information feedback method, comprising:
Obtain the optimum subband position of part bandwidth and the difference between the optimum subband position in the last channel information reporting to base station;
To described base station, report the channel information that carries optimum subband position difference, the described channel information that carries optimum subband position difference comprises the CQI of optimum subband in the CQI, each several part bandwidth in described broadband, and the difference between the optimum subband position in optimum subband position and the last channel information reporting to base station, the shared bit number of described difference is less than the shared bit number in optimum subband position.
A channel information feedback method, comprising:
The channel information that carries optimum subband position difference that receiving terminal reports, the described channel information that carries optimum subband position difference comprises the CQI of optimum subband in the CQI, each several part bandwidth in described broadband, and the difference between the optimum subband position in optimum subband position and the last channel information reporting to base station, the shared bit number of described difference is less than the shared bit number in optimum subband position;
According to the described channel information that carries optimum subband position difference, determine the modulation coding mode of down channel.
A channel information feedback method, comprising:
To base station, report the channel information that does not carry optimum subband CQI, the described channel information that does not carry optimum subband CQI comprises the CQI in broadband, or the CQI in broadband and optimum subband position;
To base station, report the channel information that carries optimum subband CQI while reshuffling condition reaching, the described channel information that carries optimum subband CQI comprises the CQI of optimum subband in the CQI, each several part bandwidth in broadband, or CQI and the optimum subband position of optimum subband in the CQI in broadband, each several part bandwidth.
A terminal, comprising:
The first reporting module, for report the channel information that does not carry optimum subband position to base station, the described channel information that does not carry optimum subband position comprises the CQI in broadband, and the CQI of optimum subband in each several part bandwidth;
The second reporting module, for reporting the channel information that carries optimum subband position while reshuffling condition to base station reaching, the described channel information that carries optimum subband position comprises the CQI of optimum subband in the CQI, each several part bandwidth in broadband, and optimum subband position.
A base station, comprising:
Receiver module, the channel information that does not carry optimum subband position reporting for receiving terminal, the described channel information that does not carry optimum subband position comprises the CQI in broadband, and the CQI of optimum subband in each several part bandwidth;
Determination module, for according to the described channel information that does not carry optimum subband position, and the optimum subband position that reports of terminal last time, determines the modulation coding mode of down channel.
A terminal, comprising:
Acquisition module, for obtaining the difference between the optimum subband position of part bandwidth and the optimum subband position of the last channel information reporting to base station;
Reporting module, for report the channel information that carries optimum subband position difference to described base station, the described channel information that carries optimum subband position difference comprises the CQI of optimum subband in the CQI, each several part bandwidth in described broadband, and the difference between the optimum subband position in optimum subband position and the last channel information reporting to base station, the shared bit number of described difference is less than the shared bit number in optimum subband position.
A base station, comprising:
Receiver module, the channel information that carries optimum subband position difference reporting for receiving terminal, the described channel information that carries optimum subband position difference comprises the CQI of optimum subband in the CQI, each several part bandwidth in described broadband, and the difference between the optimum subband position in optimum subband position and the last channel information reporting to base station, the shared bit number of described difference is less than the shared bit number in optimum subband position;
Determination module, for carrying the channel information of optimum subband position difference described in basis, determines the modulation coding mode of down channel.
Embodiment of the present invention channel information feedback method, terminal and base station, the rule that the optimum subband of terminal utilization position does not change within a period of time, or the rule that the position of optimum subband only converts at adjacent intersubband, in the channel information reporting to base station, do not carry the positional information of optimum subband, or report the position difference of optimum subband in circulation to replace positional information with adjacent twice.Compared with prior art, can save the expense of the optimum subband positional information of feedback, thereby can reduce feedback of channel information expense.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The method flow diagram that Fig. 1 provides for the embodiment of the present invention one;
The method flow diagram that Fig. 2 provides for the embodiment of the present invention two;
The method flow diagram that Fig. 3 provides for the embodiment of the present invention three;
The method flow diagram that Fig. 4 provides for the embodiment of the present invention four;
The method flow diagram that Fig. 5 provides for the embodiment of the present invention five;
The terminal structure schematic diagram that Fig. 6, Fig. 7 provide for the embodiment of the present invention six;
The architecture of base station schematic diagram that Fig. 8, Fig. 9 provide for the embodiment of the present invention seven;
The terminal structure schematic diagram that Figure 10 provides for the embodiment of the present invention eight;
The terminal structure schematic diagram that Figure 11 provides for the embodiment of the present invention nine.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
For making the advantage of technical solution of the present invention clearer, below in conjunction with drawings and Examples, the present invention is elaborated.
Channel variation to a plurality of subbands in certain BP in broadband between terminal and base station is carried out emulation, and the rule of channel variation in emulation is summarized, and can find, for example, when the translational speed of terminal is middle low speed (10km/h), has following rule:
Rule 1: in same BP, the position of optimum subband (subband of CQIindex maximum) does not change in for a long time, and be that variation has occurred for the CQI index (sign) of optimum subband.
Rule 2: in same BP, the position of optimum subband only converts at adjacent intersubband, that is to say, the position of the optimum subband before the position of the optimum subband after conversion and conversion is adjacent.
Embodiment mono-
The present embodiment provides a kind of channel information feedback method, and in the present embodiment, the WB between terminal and base station (broadband) comprises J BP (part bandwidth), and each BP comprises a plurality of SB (subband).At one, report in circulation, terminal need to report a broadband CQI, and the CQI of the optimum subband of selecting from each BP carries out K wheel and reports.Wherein, the value of J can be got the integer that is greater than or equal to 1, and the value of K can be got the integer that is greater than or equal to 1.As shown in Figure 1, described method comprises:
101, terminal reports the channel information that does not carry optimum subband position to base station, and the described channel information that does not carry optimum subband position comprises the channel quality indicator (CQI) in broadband, and the CQI of optimum subband in the each several part bandwidth in broadband;
102, terminal reports the channel information that carries optimum subband position while reshuffling condition reaching to base station, described in carry optimum subband position channel information comprise the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and optimum subband position;
103, base station is according to the described channel information that does not carry optimum subband position, and the optimum subband position that reports of terminal last time, determines the modulation coding mode of down channel.
Embodiment of the present invention channel information feedback method, the rule that the optimum subband of terminal utilization position does not change within a period of time, when terminal measures the optimum subband position of each several part bandwidth in the broadband between terminal and base station when identical with optimum subband position in the last channel information reporting to base station, the positional information of not carrying optimum subband in the channel information reporting to base station.Compared with prior art, can save the expense of the optimum subband positional information of feedback, thereby can reduce feedback of channel information expense.
Embodiment bis-
The present embodiment is the channel information feedback method that utilizes rule 1, and application scenarios is single carrier scene or multicarrier scene.
When application scenarios is single carrier scene, the WB between terminal and base station (broadband) comprises J BP (part bandwidth), and each BP comprises a plurality of SB (subband).At one, report in circulation, terminal need to report a broadband CQI, and the CQI of the optimum subband of selecting from each BP carries out K wheel and reports.Wherein, the value of J can be got the integer that is greater than or equal to 1, and the value of K can be got the integer that is greater than or equal to 1.
When application scenarios is multicarrier scene, terminal takies M CC (component carrier), and each CC occupies certain bandwidth, is called the WB (broadband) of this CC, the WB of each CC can be divided into J BP (part bandwidth) equally, and each BP comprises a plurality of SB (subband).At one, report in circulation, terminal need to report a broadband CQI, and the CQI of the optimum subband of selecting from each BP carries out K wheel and reports.Wherein, the value of J can be got the integer that is greater than or equal to 1, and the value of K can be got the integer that is greater than or equal to 1, and the value of M can be got the integer that is greater than or equal to 2.
As shown in Figure 2, described channel information feedback method comprises:
201, terminal reports the channel information that does not carry optimum subband position to base station, and the described channel information that does not carry optimum subband position comprises the channel quality indicator (CQI) in broadband, and the CQI of optimum subband in the each several part bandwidth in broadband.
Particularly, when terminal and base station initially connect, or when reshuffling at set intervals, according to the scheme of prior art, feed back, report optimum subband position.Wherein, reshuffling at set intervals can be periodically, can be also trigger-type.
If the translational speed of terminal is more fixing, as 10km/h, can send a suboptimum subband position every 14 subframes, and middle subframe is taked the mode with reference to optimum subband position in BP corresponding in a nearest subframe.
Trigger-type is reshuffled can have various ways to trigger, as can be that base station is that each terminal is configured by high-level signaling, in signaling, can carry the number of subframes or the number of cycles that do not report optimum subband position, also can not carry, and adopt fixed value or empirical value before.
Initially connecting or reshuffle beyond other constantly, in the broadband between terminal and base station, the optimum subband position of each several part bandwidth is identical with the optimum subband position in the last channel information reporting to base station.
Wherein, report the CQI of optimum subband in each several part bandwidth to be specifically as follows:
Order according to base station agreement, reports the CQI of optimum subband in each several part bandwidth successively to base station.For example: the order according to BP from low frequency to high frequency, report successively BP1, BP2 ..., the CQI of optimum subband in BPJ, or the order appointed of other base station and terminal.
Or, when application scenarios is single carrier scene, to base station, report the positional information of part bandwidth and the CQI of each optimum subband that each optimum subband is corresponding.
Now, the CQI of optimum subband no longer needs to report in order, can coordinate flexibly and report with the positional information of BP.For example: can be separately to report by each optimum subband, first report the CQI value of optimum subband to report again the positional information of the BP that this optimum subband is corresponding at every turn; Or the positional information that first reports BP reports the CQI value of optimum subband in this BP again; Also can be that all optimum subbands collective reports, first report the CQI value of all optimum subbands, then by same order, report the positional information of corresponding BP; Or first report the positional information of all BP by same order, to report again the CQI value of corresponding optimum subband.
When application scenarios is multicarrier scene, to base station, report part bandwidth and the positional information of component carrier and the CQI of each optimum subband that each optimum subband is corresponding.
Now, the CQI of optimum subband no longer needs to report in order, can coordinate flexibly and report with the positional information of BP and CC.For example: can be separately to report by each optimum subband, first report the CQI value of optimum subband to report again BP that this optimum subband is corresponding and the positional information of CC at every turn; Or the positional information that first reports BP and CC reports the CQI value of this BP and optimum subband corresponding to CC again; Also can be that all optimum subbands collective reports, first report the CQI value of all optimum subbands, then by same order, report the positional information of corresponding BP and CC; Or first report the positional information of all BP and CC by same order, to report again the CQI value of corresponding optimum subband.
Further, terminal can also receive that base station sends reports pattern indication;
Or
Terminal sends to base station and reports pattern indication.
When application scenarios is single carrier scene, described in report pattern indication to carry optimum subband positional information or do not carry optimum subband positional information, described in report the designator by 1bit in the channel information that pattern indication reports to base station in terminal to carry.The designator of described 1bit is set to comprise two states, for example: when described designator is 0, the positional information that the channel information that shows to report does not carry optimum subband; When described designator is 1, show that the channel information reporting carries the positional information of optimum subband.Certainly, also can adopt other set-up mode.
Wherein, at the trigger-type that does not receive base station, reshuffle indication and do not arrive while reshuffling the cycle, to base station, reporting the channel information that does not carry optimum subband position.
Further, when reporting in circulation at one, broadband CQI of terminal to report, and the CQI of the optimum subband of selecting from each BP carries out two-wheeled or more than two-wheeled giving the correct time, with in the channel information that does not carry optimum subband position once reporting to base station, after many wheels optimum subband position can be with reference to an optimum subband position of taking turns or taking turns more above.
When application scenarios is multicarrier scene, described in report the optimum subband positional information of pattern indication portability, do not carry optimum subband positional information, carry in a part of component carrier optimum subband positional information or carry optimum subband positional information in a part of part bandwidth.Describedly report the designator by 2bit in the channel information that pattern indication reports to base station in terminal to carry.The designator of described 2bit is set to comprise one of four states, and this one of four states can arrange in the following manner:
When described designator is 00, show that the channel information reporting does not carry the positional information of optimum subband (Option 1);
When described designator is 01, show that the channel information reporting carries the positional information of the optimum subband of a part of CC, other CC adopts and reuses a positional information (Option 2) that reports the optimum subband in circulation;
When described designator is 10, show that the channel information reporting carries the positional information of the optimum subband of a part of BP (comprising a plurality of CC), other BP (comprising a plurality of CC) adopts and reuses a positional information (Option 3) that reports the optimum subband in circulation;
When described designator is 11, in the channel information that shows to report, carry the positional information (prior art) of all optimum subbands.
Certainly, the set-up mode of the designator of described 2bit is not limited to this, can be also the alternate manner of base station and terminal agreement.
To terminal under single carrier scene, adopting two kinds of different modes to know below reports the corresponding feedback of channel information expense of pattern to describe:
(1), when terminal receive that base station sends report pattern time, like the prior art, middle feedback of channel information expense is constantly feedback of channel information expense when initially connecting or reshuffling:
Overhead＝Wideband CQI+Subband CQI*J*K (1)
Or one reports in circulation K-1 wheel below with reference to the 1st optimum subband position of taking turns in J BP:
Overhead＝Wideband CQI+Subband CQI*J*K+Subband Lable*J (2)
By formula (1), can be found out, the feedback of channel information has been saved the feedback overhead that reports optimum subband position in circulation; By formula (2), can be found out, the feedback of channel information has been saved one and has been reported K-1 in circulation to take turns the feedback overhead of optimum subband position, thereby can reduce the feedback overhead of channel information.
(2), when terminal sends the pattern that reports to base station, middle feedback of channel information expense is constantly:
Overhead＝Wideband CQI+Subband CQI*J*K+1(3)
Or one reports in circulation K-1 wheel below with reference to the 1st optimum subband position of taking turns in J BP:
Overhead＝Wideband CQI+Subband CQI*J*K+Subband Lable*J+1(4)
By formula (3), can be found out, the feedback of channel information has been saved the feedback overhead that reports optimum subband position in circulation; By formula (4), can be found out, the feedback of channel information has been saved a feedback overhead that reports K-1 in circulation to take turns optimum subband position, although increased the feedback that reports pattern of 1bit, but because the feedback overhead of the positional information of optimum subband is greater than 1bit, thereby can reduce the feedback overhead of channel information.
Below under multicarrier scene, for Option 1, terminal adopts two kinds of different modes to know to report the corresponding feedback of channel information expense of pattern to describe:
(1), when terminal receive that base station sends report pattern time, like the prior art, middle feedback of channel information expense is constantly feedback of channel information expense when initially connecting or reshuffling:
Overhead＝(Wideband CQI+Subband CQI*J*K)*M (5)
Or one reports K-1 below in circulation to take turns reference the 1st optimum subband position of taking turns in J BP:
Overhead＝(Wideband CQI+Subband CQI*J*K+Subband Lable*J)*M (6)
Or, one reports in circulation and has the K-1 wheel of the individual CC of any m (0 < m < M) below in M CC with reference to the 1st optimum subband position of taking turns in J BP, and is left M-m the upper optimum subband position reporting in circulation of CC reference:
Overhead＝(Wideband CQI+Subband CQI*J*K)*(M-m)
+(Wideband CQI+Subband CQI*J*K+Subband Lable*J)*m (7)
By formula (5), can be found out, the feedback of channel information has been saved the feedback overhead that reports optimum subband position in circulation; By formula (6), (7), can be found out, the feedback of channel information has been saved a feedback overhead that reports a part of optimum subband position in circulation, thereby can reduce the feedback overhead of channel information.
(2), when terminal sends the pattern that reports to base station, middle feedback of channel information expense is constantly:
Overhead＝(Wideband CQI+Subband CQI*J*K)*M+r (8)
Or one reports K-1 below in circulation to take turns reference the 1st optimum subband position of taking turns in J BP:
Overhead＝(Wideband CQI+Subband CQI*J*K+Subband Lable*J)*M+r (9)
Or, one reports in circulation and has the K-1 wheel of the individual CC of any m (0 < m < M) below in M CC with reference to the 1st optimum subband position of taking turns in J BP, and is left M-m the upper optimum subband position reporting in circulation of CC reference:
Overhead＝(Wideband CQI+Subband CQI*J*K)*(M-m)
+(Wideband CQI+Subband CQI*J*K+Subband Lable*J)*m+r (10)
Wherein, when base station and terminal can support that above-mentioned four kinds of states communicate, for different states, need to indicate with 2bit, i.e. r=2; If while only supporting the first state (designator is 00) and prior art, need to indicate with 1bit for different states, i.e. r=1; If while only supporting a kind of fixing state, do not need to indicate, i.e. r=0.
By formula (8), can be found out, the feedback of channel information has been saved the feedback overhead that reports optimum subband position in circulation; By formula (9), (10), can be found out, the feedback of channel information has been saved a feedback overhead that reports a part of optimum subband position in circulation, although increased the feedback that reports pattern of r bits, but because the feedback overhead of the positional information of optimum subband is greater than r bits, thereby can reduce the feedback overhead of channel information.
Certainly, for Option 2 and Option 3, also can partly save the feedback overhead of optimum subband position, repeat no more here.
202, terminal reports the channel information that carries optimum subband position while reshuffling condition reaching to base station, described in carry optimum subband position channel information comprise the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and optimum subband position.
Wherein, at the trigger-type that receives base station, reshuffle indication, or arrive while reshuffling the cycle, to base station, report the channel information that carries optimum subband position.
203, base station is according to the described channel information that does not carry optimum subband position, and the optimum subband position that reports of terminal last time, determines the modulation coding mode of down channel.
Further, base station can also according to the translational speed of described terminal, residing cell type or in community residing position, to described terminal, send and reshuffle indication; And the channel information that carries optimum subband position that reports of receiving terminal, described in carry optimum subband position channel information comprise the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and optimum subband position.
204, the channel information that carries optimum subband position described in the basis of base station, upgrades optimum subband position.
Embodiment of the present invention channel information feedback method, the rule that the optimum subband of terminal utilization position does not change within a period of time, when terminal measures the optimum subband position of each several part bandwidth in the broadband between terminal and base station when identical with optimum subband position in the last channel information reporting to base station, the positional information of not carrying optimum subband in the channel information reporting to base station.Compared with prior art, can save the expense of the optimum subband positional information of feedback, thereby can reduce feedback of channel information expense.
Embodiment tri-
The present embodiment provides a kind of channel information feedback method, and as shown in Figure 3, in end side, described method comprises:
301, terminal is obtained the optimum subband position of part bandwidth and the difference between the optimum subband position in the last channel information reporting to base station;
302, terminal reports the channel information that carries optimum subband position difference to described base station, the described channel information that carries optimum subband position difference comprises the CQI in described broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and the difference between the optimum subband position in optimum subband position and the last channel information reporting to base station;
Wherein, the shared bit number of described difference is less than the shared bit number in optimum subband position.
303, base station is according to described optimum subband position difference, and the last optimum subband position receiving, and calculates current optimum subband position;
304, base station is according to described current optimum subband position, the CQI in described broadband, and the CQI of optimum subband in the each several part bandwidth in broadband, determines the modulation coding mode of down channel.
Embodiment of the present invention channel information feedback method, terminal utilizes optimum subband position only in the rule of adjacent intersubband conversion, in the channel information reporting to base station, with adjacent twice, reports the position difference of optimum subband in circulation to replace positional information.Compared with prior art, owing to having adopted bit still less to represent the difference between optimum subband position, thereby can reduce feedback of channel information expense.
Embodiment tetra-
The present embodiment is the channel information feedback method that utilizes rule 2, and application scenarios is single carrier scene or multicarrier scene.
As shown in Figure 4, described channel information feedback method comprises:
401, terminal is obtained the optimum subband position of part bandwidth and the difference between the optimum subband position in the last channel information reporting to base station.
When application scenarios is single carrier scene, utilize rule 2, the feature that the position of optimum subband only converts at adjacent intersubband, consideration adopts difference to report to optimum subband position, and the possibility that becomes optimum subband due to the adjacent subband of optimum subband is maximum, can adopt bit number still less to represent the position of optimum subband.
When sub band number surpasses 4, can only adopt the designator of 2bits to represent the difference value of subband position.
Wherein, for the designator of 2bits, ' 01 ' represents optimum subband invariant position; ' 10 ' represents that optimum subband position is to subband of high-frequency mobile; Optimum subband position is moved one or more subbands to low frequency and is represented with ' 00 ', is used as the adjacent subband of former optimum subband position low frequency direction and processes after base station receives; Optimum subband position represents with ' 11 ' to the two or more subbands of high-frequency mobile, is used as optimum subband position and by original position, to high frequency direction, moves two sons and bring processing after base station receives.
When sub band number is less than or equal to 4, can only adopt the designator of 1bits to represent the difference value of subband position.
Wherein, for the designator of 1bits, ' 0 ' represents optimum subband invariant position; ' 1 ' represents that optimum subband position moves one or more subbands to high frequency or low frequency.Certainly, this situation has been sacrificed more precision, can only represent that optimum subband is " change " or " constant " two states, for the state changing, after base station receives, being only used as a certain particular case processes, as thought, optimum subband position moves to the adjacent subband of former optimum subband position low frequency direction, can certainly be to be used as high frequency adjacent sub-bands or the processing of other positions.
When application scenarios is multicarrier scene, can on the basis of single carrier scene, expand, can be that difference (Option 1) is done with optimum subband position corresponding in a upper circulation in the optimum subband position in whole BP of whole CC; Difference (Option 2) is done with optimum subband position corresponding in a upper circulation in the optimum subband position that can be also part CC; Or difference (Option 3) is done with optimum subband position corresponding in a upper circulation in the optimum subband position of part BP.Equally, if only support Option1 and keep compatible with prior art, only need additionally with 1bit, to indicate, if and need to support all Option to communicate, need to indicate different Option with extra 2bits, if only support Option1 and do not need to keep compatible with prior art, do not need indication.
402, terminal reports the channel information that carries optimum subband position difference to described base station, the described channel information that carries optimum subband position difference comprises the CQI of optimum subband in the CQI, each several part bandwidth in described broadband, and the difference between the optimum subband position in optimum subband position and the last channel information reporting to base station.
Wherein, the shared bit number of described difference is less than the shared bit number in optimum subband position.
Below terminal under single carrier scene is adopted and reports the optimum subband position corresponding feedback of channel information expense of difference to describe:
Each reports the feedback of channel information expense of circulation to be:
Overhead＝Wideband CQI+(Subband CQI+Subband Differential Lable)*J*K (11)
Or one reports in circulation K-1 below to take turns reference the 1st optimum subband position of taking turns in J BP to do difference:
Overhead＝Wideband CQI+Subband CQI*J*K+Subband Lable*J
+Subband Differential Lable*J*(K-1)(12)
By formula (11), (12), can be found out, the feedback of channel information has been saved the feedback overhead of optimum subband position, although increased the feedback of optimum subband alternate position spike score value, but because the feedback overhead of the positional information of optimum subband is greater than the difference value of optimum subband position, thereby can reduce the feedback overhead of channel information.
Further, the described channel information that carries optimum subband position difference that reports to described base station can comprise: to described base station, report the channel information that carries optimum subband position difference, the described channel information that carries optimum subband position difference comprises the CQI of optimum subband in the CQI, each several part bandwidth in described broadband, optimum subband position in part part bandwidth, and the difference between the optimum subband position in the channel information that in a part of part bandwidth, optimum subband position and last time report to base station.
Further, the described channel information that carries optimum subband position difference that reports to described base station can comprise: to described base station, report the channel information that carries optimum subband position difference, the described channel information that carries optimum subband position difference comprises the CQI of optimum subband in the CQI, each several part bandwidth in described broadband, optimum subband position in part component carrier, and the difference between the optimum subband position in optimum subband position and the channel information that reports to base station of last time in a part of component carrier.
Above-mentioned two situations can reduce the feedback overhead of channel information equally, do not repeat them here.
To under multicarrier scene, for Option 1, terminal adopts and reports the optimum subband position corresponding feedback of channel information expense of difference to describe below:
Each reports the feedback of channel information expense of circulation to be:
Overhead＝[Wideband CQI+(Subband CQI+Subband Differential Lable)*J*K]*M (13)
Or one reports in circulation K-1 below to take turns reference the 1st optimum subband position of taking turns in J BP to do difference:
Overhead＝[Wideband CQI+Subband CQI*J*K+Subband Lable*J
+Subband Differential Lable*J*(K-1)]*M (14)
Or one reports in circulation and has in M CC the individual CC of any m (0 < m < M) to adopt K-1 wheel and the 1st below
Difference is done in the optimum subband position of taking turns in J BP, and difference is done in optimum subband position in the corresponding BP that remaining M-m employing reports circulation with upper:
Overhead＝[Wideband CQI+Subband CQI*J*K+Subband Lable*J
+Subband Differential Lable*J*(K-1)]*m+[Wideband CQI+(15)
(Subband CQI+Subband Differential Lable)*J*K]*(M-m)
By formula (13), (14), (15), can be found out, the feedback of channel information has been saved the feedback overhead of optimum subband position, although increased the feedback of optimum subband alternate position spike score value, but because the feedback overhead of the positional information of optimum subband is greater than the difference value of optimum subband position, thereby can reduce the feedback overhead of channel information.
Certainly, for Option 2 and Option 3, also can partly save the feedback overhead of optimum subband position, repeat no more here.
403, base station is according to described optimum subband position difference, and the last optimum subband position receiving, and calculates current optimum subband position.
404, base station is according to described current optimum subband position, the CQI in described broadband, and the CQI of optimum subband in each several part bandwidth, determines the modulation coding mode of down channel.
405, base station, according to described current optimum subband position, is upgraded optimum subband position.
Embodiment of the present invention channel information feedback method, terminal utilizes optimum subband position only in the rule of adjacent intersubband conversion, in the channel information reporting to base station, with adjacent twice, reports the position difference of optimum subband in circulation to replace positional information.Compared with prior art, owing to having adopted bit still less to represent the difference between optimum subband position, thereby can reduce feedback of channel information expense.
Embodiment five
The present embodiment provides a kind of channel information feedback method, and as shown in Figure 5, described method comprises:
501, terminal reports the channel information that does not carry optimum subband CQI to base station, and the described channel information that does not carry optimum subband CQI comprises the CQI in broadband, or the CQI in broadband and optimum subband position;
502, terminal reports the channel information that carries optimum subband CQI while reshuffling condition reaching to base station, the described channel information that carries optimum subband CQI comprises the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, or CQI and the optimum subband position of optimum subband in the each several part bandwidth in the CQI in broadband, broadband.
Embodiment of the present invention channel information feedback method, the rule that the optimum subband CQI of terminal utilization does not change within a period of time, when terminal measures the optimum subband CQI of each several part bandwidth in the broadband between terminal and base station when identical with optimum subband CQI in the last channel information reporting to base station, in the channel information reporting to base station, do not carry optimum subband CQI.Compared with prior art, can save the expense of the optimum subband CQI of feedback, thereby can reduce feedback of channel information expense.
Embodiment six
The present embodiment provides a kind of terminal, and as shown in Figure 6, described terminal 60 comprises:
The first reporting module 601, for 61 reporting the channel information that does not carry optimum subband position to base station, the described channel information that does not carry optimum subband position comprises the CQI in broadband, and the CQI of optimum subband in the each several part bandwidth in broadband;
The second reporting module 602, for reporting the channel information that carries optimum subband position reaching while reshuffling condition to base station 61, the described channel information that carries optimum subband position comprises the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and optimum subband position.
Further, as shown in Figure 7, described terminal 60 can also comprise:
Receiver module 603, for receiving the pattern that reports of base station 61 transmissions;
Or
Sending module 604, for to base station, 61 transmissions report pattern;
Describedly report pattern indication to carry optimum subband positional information or do not carry optimum subband positional information, or, described in report pattern indication to carry optimum subband positional information, do not carry optimum subband positional information, carry in a part of component carrier optimum subband positional information or carry optimum subband positional information in a part of part bandwidth.
Further, described the first reporting module 601, specifically for reshuffling indication at the trigger-type that does not receive base station 61 and not arriving while reshuffling the cycle, to base station, 61 report the channel information that does not carry optimum subband position;
Described the second reporting module 602, specifically for reshuffling indication at the trigger-type that receives base station 61, or arrives while reshuffling the cycle, and to base station, 61 report the channel information that carries optimum subband position.
Embodiment of the present invention terminal, the rule of utilizing optimum subband position not change within a period of time, when terminal measures the optimum subband position of each several part bandwidth in the broadband between terminal and base station when identical with optimum subband position in the last channel information reporting to base station, the positional information of not carrying optimum subband in the channel information reporting to base station.Compared with prior art, can save the expense of the optimum subband positional information of feedback, thereby can reduce feedback of channel information expense.
Embodiment seven
The present embodiment provides a kind of base station, and as shown in Figure 8, described base station 80 comprises:
Further, as shown in Figure 9, described receiver module 801, also for reaching the channel information that carries optimum subband position that receiving terminal 81 reports while reshuffling condition, the described channel information that carries optimum subband position comprises the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and optimum subband position;
Described determination module 802, also, for carrying the channel information of optimum subband position described in basis, determines the modulation coding mode of down channel.
Further, as shown in Figure 9, described base station 80 can also comprise:
Further, as shown in Figure 9, described base station 80 can also comprise:
Sending module 804, for according to the translational speed of described terminal 81, residing cell type or in community residing position, to described terminal 81, send and reshuffle indication;
Described receiver module 801, the channel information that carries optimum subband position also reporting for receiving terminal 81, the described channel information that carries optimum subband position comprises the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and optimum subband position.
Further, described receiver module 801, what also for receiving terminal 81, send reports pattern;
Or
Described sending module 804, also for sending to terminal 81 pattern that reports.
Describedly report pattern indication to carry optimum subband positional information or do not carry optimum subband positional information, or, described in report pattern indication to carry optimum subband positional information, do not carry optimum subband positional information, carry in a part of component carrier optimum subband positional information or carry optimum subband positional information in a part of part bandwidth.
Embodiment of the present invention base station, the rule of utilizing optimum subband position not change within a period of time, when terminal measures the optimum subband position of each several part bandwidth in the broadband between terminal and base station when identical with optimum subband position in the last channel information reporting to base station, the positional information of not carrying optimum subband in the channel information reporting to base station.Compared with prior art, can save the expense of the optimum subband positional information of feedback, thereby can reduce feedback of channel information expense.
Embodiment eight
The present embodiment provides a kind of terminal, and as shown in figure 10, described terminal 90 comprises:
Wherein, the shared bit number of described difference is less than the shared bit number in optimum subband position.
Further, described reporting module 1001, specifically for report the channel information that carries optimum subband position difference to described base station 101, the described channel information that carries optimum subband position difference comprises the CQI in described broadband, the CQI of optimum subband in the each several part bandwidth in broadband, optimum subband position in part part bandwidth, and the difference between the optimum subband position in the channel information that in a part of part bandwidth, optimum subband position and last time report to base station.
Further, described reporting module 1001, specifically for report the channel information that carries optimum subband position difference to described base station 102, the described channel information that carries optimum subband position difference comprises the CQI in described broadband, the CQI of optimum subband in the each several part bandwidth in broadband, optimum subband position in part component carrier, and the difference between the optimum subband position in optimum subband position and the channel information that reports to base station of last time in a part of component carrier.
Embodiment of the present invention terminal, utilizes optimum subband position only in the rule of adjacent intersubband conversion, in the channel information reporting to base station, with adjacent twice, reports the position difference of optimum subband in circulation to replace positional information.Compared with prior art, owing to having adopted bit still less to represent the difference between optimum subband position, thereby can reduce feedback of channel information expense.
Embodiment nine
The present embodiment provides a kind of base station, and as shown in figure 11, described base station 110 comprises:
Embodiment of the present invention base station, utilizes optimum subband position only in the rule of adjacent intersubband conversion, in the channel information reporting to base station, with adjacent twice, reports the position difference of optimum subband in circulation to replace positional information.Compared with prior art, owing to having adopted bit still less to represent the difference between optimum subband position, thereby can reduce feedback of channel information expense.
The above-mentioned embodiment of the method providing can be provided for the terminal that the embodiment of the present invention provides and base station.The channel information feedback method that the embodiment of the present invention provides, terminal and base station go for terminal to the feedback of channel information of base station, but are not limited only to this.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, to come the hardware that instruction is relevant to complete by computer program, described program can be stored in a computer read/write memory medium, this program, when carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (22)
1. a channel information feedback method, is characterized in that, comprising:
At the trigger-type that does not receive base station, reshuffle indication and do not arrive while reshuffling the cycle, to base station, report the channel information that does not carry optimum subband position, the described channel information that does not carry optimum subband position comprises the channel quality indicator (CQI) in broadband, and the CQI of optimum subband in the each several part bandwidth in broadband;
At the trigger-type that receives base station, reshuffle indication, or arrive while reshuffling the cycle, to base station, report the channel information that carries optimum subband position, the described channel information that carries optimum subband position comprises the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and optimum subband position.
2. method according to claim 1, is characterized in that, at the trigger-type that receives base station, reshuffles indication, or arrives while reshuffling the cycle, reports the channel information that carries optimum subband position to comprise to base station:
To base station, report the channel information that carries optimum subband position, same, report in circulation, the optimum subband position that before the optimum subband reference by location that k wheel reports below, K-k wheel reports, wherein K is a wheel number that reports circulation to comprise optimum subband position, and k is less than K.
3. method according to claim 1, is characterized in that, also comprises:
Receive the pattern that reports of base station transmission;
Or
To base station, send the pattern that reports;
Describedly report pattern to be used to indicate to carry optimum subband position or do not carry optimum subband position, or, describedly report pattern to be used to indicate to carry optimum subband position, do not carry optimum subband position, carry in a part of component carrier optimum subband position or carry optimum subband position in a part of part bandwidth, described a part of part bandwidth is the set of a plurality of part bandwidth in whole part bandwidth.
4. method according to claim 1, is characterized in that, the described channel information that does not carry optimum subband position that reports to base station comprises:
Order according to base station agreement, reports the CQI of optimum subband in each several part bandwidth successively to base station;
Or
To base station, report the positional information of part bandwidth and the CQI of each optimum subband that each optimum subband is corresponding;
Or
To base station, report part bandwidth and the positional information of component carrier and the CQI of each optimum subband that each optimum subband is corresponding.
5. a channel information feedback method, is characterized in that, comprising:
The channel information that does not carry optimum subband position that receiving terminal reports, the described channel information that does not carry optimum subband position comprises the CQI in broadband, and the CQI of optimum subband in the each several part bandwidth in broadband;
According to the described channel information that does not carry optimum subband position, and the optimum subband position that reports of terminal last time, determine the modulation coding mode of down channel;
The optimum subband position that the described terminal last time reports is specially terminal in the upper optimum subband position once arriving in the channel information that carries optimum subband position reporting while reshuffling condition;
The described condition of reshuffling comprises: the trigger-type that receives base station is reshuffled indication, or arrival is reshuffled the cycle.
6. method according to claim 5, is characterized in that, also comprises:
The channel information that carries optimum subband position that receiving terminal reports when condition is reshuffled in arrival, described in carry optimum subband position channel information comprise the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and optimum subband position; The channel information that carries optimum subband position that receiving terminal reports when condition is reshuffled in arrival, described in carry optimum subband position channel information comprise the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and optimum subband position;
According to the described channel information that carries optimum subband position, determine the modulation coding mode of down channel.
7. method according to claim 5, is characterized in that, also comprises:
According to the translational speed of described terminal, residing cell type or in community residing position, to described terminal, send and reshuffle indication;
The channel information that carries optimum subband position that receiving terminal reports, described in carry optimum subband position channel information comprise the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and optimum subband position.
8. according to the method described in claim 6 or 7, it is characterized in that, also comprise:
According to the described channel information that carries optimum subband position, optimum subband position is upgraded.
9. a channel information feedback method, is characterized in that, comprising:
Obtain the optimum subband position of part bandwidth and the difference between the optimum subband position in the last channel information reporting to base station;
To described base station, report the channel information that carries optimum subband position difference, the described channel information that carries optimum subband position difference comprises the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and the difference between the optimum subband position in optimum subband position and the last channel information reporting to base station.
10. method according to claim 9, is characterized in that, the described channel information that carries optimum subband position difference that reports to described base station comprises:
To described base station, report the channel information that carries optimum subband position difference, the described channel information that carries optimum subband position difference comprises the CQI in described broadband, the CQI of optimum subband in the each several part bandwidth in broadband, optimum subband position in part part bandwidth, and the difference between the optimum subband position in optimum subband position and the last channel information reporting to base station in a part of part bandwidth, described a part of part bandwidth is the set of a plurality of part bandwidth in whole part bandwidth.
11. methods according to claim 9, is characterized in that, the described channel information that carries optimum subband position difference that reports to described base station comprises:
To described base station, report the channel information that carries optimum subband position difference, the described channel information that carries optimum subband position difference comprises the CQI in described broadband, the CQI of optimum subband in the each several part bandwidth in broadband, optimum subband position in part component carrier, and the difference between the optimum subband position in optimum subband position and the channel information that reports to base station of last time in a part of component carrier.
12. 1 kinds of channel information feedback methods, is characterized in that, comprising:
The channel information that carries optimum subband position difference that receiving terminal reports, the described channel information that carries optimum subband position difference comprises the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and the difference between the optimum subband position in optimum subband position and the last channel information reporting to base station;
According to described optimum subband position difference, and the last optimum subband position receiving, calculate current optimum subband position;
According to described current optimum subband position, the CQI in described broadband, and the CQI of optimum subband in the each several part bandwidth in broadband, determine the modulation coding mode of down channel.
13. 1 kinds of channel information feedback methods, is characterized in that, comprising:
To base station, report the channel information that does not carry optimum subband CQI, the described channel information that does not carry optimum subband CQI comprises the CQI in broadband, or the CQI in broadband and optimum subband position;
To base station, report the channel information that carries optimum subband CQI while reshuffling condition reaching, the described channel information that carries optimum subband CQI comprises the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, or CQI and the optimum subband position of optimum subband in the each several part bandwidth in the CQI in broadband, broadband;
The described condition of reshuffling comprises: the trigger-type that receives base station is reshuffled indication, or arrival is reshuffled the cycle.
14. 1 kinds of terminals, is characterized in that, comprising:
The first reporting module, for reshuffling indication at the trigger-type that does not receive base station and not arriving while reshuffling the cycle, to base station, report the channel information that does not carry optimum subband position, the described channel information that does not carry optimum subband position comprises the CQI in broadband, and the CQI of optimum subband in the each several part bandwidth in broadband;
The second reporting module, for reshuffling indication at the trigger-type that receives base station, or arrive while reshuffling the cycle, to base station, report the channel information that carries optimum subband position, the described channel information that carries optimum subband position comprises the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and optimum subband position.
15. terminals according to claim 14, is characterized in that, also comprise:
Receiver module, for receiving the pattern that reports of base station transmission;
Or
Sending module, for sending the pattern that reports to base station;
Describedly report pattern to be used to indicate to carry optimum subband positional information or do not carry optimum subband positional information, or, describedly report pattern to be used to indicate to carry optimum subband positional information, do not carry optimum subband positional information, carry in a part of component carrier optimum subband positional information or carry optimum subband positional information in a part of part bandwidth, described a part of part bandwidth is the set of a plurality of part bandwidth in whole part bandwidth.
16. 1 kinds of base stations, is characterized in that, comprising:
Receiver module, the channel information that does not carry optimum subband position reporting for receiving terminal, the described channel information that does not carry optimum subband position comprises the CQI in broadband, and the CQI of optimum subband in the each several part bandwidth in broadband;
Determination module, be used for according to the described channel information that does not carry optimum subband position, and the optimum subband position that reports of terminal last time, determine the modulation coding mode of down channel, the optimum subband position that the optimum subband position that the wherein said terminal last time reports is described terminal in reaching the channel information that carries optimum subband position reporting while reshuffling condition, the described condition of reshuffling comprises: the trigger-type that receives base station is reshuffled indication, or arrival is reshuffled the cycle.
17. base stations according to claim 16, it is characterized in that, described receiver module, also for reaching the channel information that carries optimum subband position that receiving terminal reports while reshuffling condition, the described channel information that carries optimum subband position comprises the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and optimum subband position;
Described determination module, also, for carrying the channel information of optimum subband position described in basis, determines the modulation coding mode of down channel.
18. base stations according to claim 16, is characterized in that, also comprise:
Sending module, for according to the translational speed of described terminal, residing cell type or in community residing position, to described terminal, send and reshuffle indication;
Described receiver module, the channel information that carries optimum subband position also reporting for receiving terminal, described in carry optimum subband position channel information comprise the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and optimum subband position.
19. 1 kinds of terminals, is characterized in that, comprising:
Acquisition module, for obtaining the difference between the optimum subband position of part bandwidth and the optimum subband position of the last channel information reporting to base station;
Reporting module, for report the channel information that carries optimum subband position difference to described base station, the described channel information that carries optimum subband position difference comprises the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and the difference between the optimum subband position in optimum subband position and the last channel information reporting to base station.
20. terminals according to claim 19, it is characterized in that, described reporting module, specifically for report the channel information that carries optimum subband position difference to described base station, the described channel information that carries optimum subband position difference comprises the CQI in described broadband, the CQI of optimum subband in the each several part bandwidth in broadband, optimum subband position in part part bandwidth, and the difference between the optimum subband position in optimum subband position and the last channel information reporting to base station in a part of part bandwidth, described a part of part bandwidth is the set of a plurality of part bandwidth in whole part bandwidth.
21. terminals according to claim 19, it is characterized in that, described reporting module, specifically for report the channel information that carries optimum subband position difference to described base station, the described channel information that carries optimum subband position difference comprises the CQI in described broadband, the CQI of optimum subband in the each several part bandwidth in broadband, optimum subband position in part component carrier, and the difference between the optimum subband position in optimum subband position and the channel information that reports to base station of last time in a part of component carrier.
22. 1 kinds of base stations, is characterized in that, comprising:
Receiver module, the channel information that carries optimum subband position difference reporting for receiving terminal, the described channel information that carries optimum subband position difference comprises the CQI in broadband, the CQI of optimum subband in the each several part bandwidth in broadband, and the difference between the optimum subband position in optimum subband position and the last channel information reporting to base station, the shared bit number of described difference is less than the shared bit number in optimum subband position;
Computing module, for according to described optimum subband position difference, and the last optimum subband position receiving, calculate current optimum subband position;
Determination module, for according to described current optimum subband position, the CQI in described broadband, and the CQI of optimum subband in the each several part bandwidth in broadband, determines the modulation coding mode of down channel.
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| CN201010107548.8A CN102148666B (en) | 2010-02-09 | 2010-02-09 | Channel information feedback method, terminal and base station |
| PCT/CN2010/080014 WO2011097924A1 (en) | 2010-02-09 | 2010-12-20 | Method for feeding back and processing channel information, terminal and base station thereof |
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| CN201010107548.8A CN102148666B (en) | 2010-02-09 | 2010-02-09 | Channel information feedback method, terminal and base station |
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| CN103326815B (en) * | 2012-03-23 | 2016-08-10 | 华为技术有限公司 | A kind of channel quality indicator (CQI) processing method, Apparatus and system |
| WO2014000227A1 (en) * | 2012-06-28 | 2014-01-03 | 华为技术有限公司 | Channel state information measurement method, terminal, and base station |
| AR104950A1 (en) * | 2015-01-30 | 2017-08-30 | ERICSSON TELEFON AB L M (publ) | WIRELESS COMMUNICATION SYSTEM WITH UNIQUE SUBBAND USER TEAM |
| CN108633059B (en) | 2017-03-25 | 2021-06-29 | 华为技术有限公司 | Method and equipment for resource allocation, method and equipment for determining partial bandwidth and method and equipment for indicating partial bandwidth |
| EP3678400B1 (en) | 2017-09-01 | 2022-11-02 | Beijing Xiaomi Mobile Software Co., Ltd. | Method for determining cqi information, base station, and user equipment |
| CN109600193B (en) * | 2017-09-30 | 2021-10-26 | 华为技术有限公司 | Channel measuring method |
| WO2019095211A1 (en) * | 2017-11-16 | 2019-05-23 | 富士通株式会社 | Method and device for switching and configuring partial bandwidth, and communication system |
| US20200274678A1 (en) * | 2017-11-16 | 2020-08-27 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Data Transmission Method, Terminal Device, and Network Device |
| CN110475297B (en) * | 2018-05-10 | 2022-04-08 | 中国移动通信有限公司研究院 | BWP-based processing method, device, system, related equipment and storage medium |
| CN110535510B (en) | 2018-08-10 | 2022-10-18 | 中兴通讯股份有限公司 | Method, device and storage medium for reporting/processing channel state information |
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| CN101005345A (en) * | 2006-01-19 | 2007-07-25 | 中兴通讯股份有限公司 | Method for realizing down physical layer control channel of orthogonal frequency division multiplex system |
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| CN101175059A (en) * | 2006-10-30 | 2008-05-07 | 华为技术有限公司 | Method and device for quantifying channel quality indication |
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| KR101119281B1 (en) * | 2005-08-29 | 2012-03-15 | 삼성전자주식회사 | Apparatus and method of feedback channel quality information and scheduling apparatus and method using thereof in a wireless communication system |
| US8054894B2 (en) * | 2005-10-31 | 2011-11-08 | Motorola Mobility, Inc. | Method and apparatus for providing channel quality feedback in an orthogonal frequency division multiplexing communication system |
| KR101321191B1 (en) * | 2007-03-29 | 2013-10-22 | 엘지전자 주식회사 | Method for transmitting channel quality information |
| US20080285512A1 (en) * | 2007-05-01 | 2008-11-20 | Interdigital Technology Corporation | Method and apparatus for reducing modulation, coding and transport block information signaling overhead |
| CN101277166A (en) * | 2008-04-03 | 2008-10-01 | 中兴通讯股份有限公司 | Method for feedback of channel quality indication |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101005345A (en) * | 2006-01-19 | 2007-07-25 | 中兴通讯股份有限公司 | Method for realizing down physical layer control channel of orthogonal frequency division multiplex system |
| CN101064865A (en) * | 2006-04-29 | 2007-10-31 | 上海原动力通信科技有限公司 | Method and apparatus for resource scheduling of cellular mobile communication system |
| CN101175059A (en) * | 2006-10-30 | 2008-05-07 | 华为技术有限公司 | Method and device for quantifying channel quality indication |
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