CN1859066A - Method and device for channel quality indication calibrating and base station dispatching users data - Google Patents

Method and device for channel quality indication calibrating and base station dispatching users data Download PDF

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Publication number
CN1859066A
CN1859066A CN 200610033065 CN200610033065A CN1859066A CN 1859066 A CN1859066 A CN 1859066A CN 200610033065 CN200610033065 CN 200610033065 CN 200610033065 A CN200610033065 A CN 200610033065A CN 1859066 A CN1859066 A CN 1859066A
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error rate
block error
channel quality
fed back
user equipment
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CN 200610033065
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CN100426714C (en
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吴凤娟
蔡华
汪少波
李必涛
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XFusion Digital Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

本发明公开一种信道质量指示校准及调度用户数据的方法及装置，其原理在于基站下行高速分组接入调度用户数据时，首先对用户设备反馈的信道质量指示进行校准；然后确定对应所述校准的信道质量指示的调度用户数据的传输格式；最后根据所述确定的传输格式调度用户数据发送。通过对用户设备反馈的信道质量指示进行自适应校准，可保证用户设备数据传送的初传误块率或统计误块率或残留误块率达到设定的目标值，从而充分利用下行高速分组接入的自适应调制编码和混合自动重传请求技术带来的增益。

Figure 200610033065

The invention discloses a method and device for calibrating channel quality indication and scheduling user data, the principle of which is that when a base station downlinks high-speed packet access to schedule user data, it first calibrates the channel quality indication fed back by user equipment; and then determines the corresponding calibration Scheduling the transmission format of the user data according to the channel quality indication; finally scheduling the transmission of the user data according to the determined transmission format. By adaptively calibrating the channel quality indicator fed back by the user equipment, it can ensure that the initial transmission block error rate or statistical block error rate or residual block error rate of the data transmission of the user equipment reaches the set target value, thereby making full use of the downlink high-speed packet access. The gains brought by the input adaptive modulation coding and hybrid automatic repeat request technology.

Figure 200610033065

Description

The method of channel quality indication calibrating and base station dispatching users data and device
Technical field
(High Speed Downlink Packet Access, HSDPA) technical field in particular, the present invention relates to the method and the device of a kind of HSDPA channel quality indication calibrating and base station dispatching users data to the present invention relates to the high speed downlink packet access.
Background technology
HSDPA is the key technology that broadband CDMA system improves descending hardware circuit solution and system spectral efficiency.HSDPA adopts adaptive modulation and coding (Adaptive Modulate and Coding, AMC) and mix automatic repeat requests (Hybrid Automatic Repeat Request, HARQ) technology: the AMC technology is mainly by subscriber equipment (User Equipment, UE) channel quality indication (the Channel Quality Indicator of feedback measurement, CQI) the transmission block length that Information Selection is suitable, the HARQ technology merges the raising data-transmission efficiency by the re-transmission of physical layer.
Wherein the measuring process of the CQI of UE feedback is: notifications UE measures high speed descending sharing channel (the High Speed-Downlink Share Channel of CQI, HS-DSCH) relative Common Pilot Channel (Common Pilot Channel, CPICH) reference power biasing Г, UE is by measuring the current received signal to noise ratio of CPICH channel that sends continuously, add power bias Г, obtain the reference received signal to noise ratio of HS-DSCH channel.This signal to noise ratio reflects the quality of reception of UE under current wireless channel, comprises transient change, this sub-district and the adjacent area disturbed condition of path loss, shadow fading, rapid fading.Agreement is the CQI value that different ability UE have defined 30 grades, 30 kinds of transformat combination of the corresponding HS-DSCH channel of difference, comprise modulation system, high speed down sharing physical channel (High Speed-Physical Downlink ShareChannel, HS-PDSCH) code channel number, transmission block length and power resize ratio, table 1 are 11 or 12 CQI mapping form for ability rating.
Table 1
The CQI value The transmission block length The HS-PDSCH code channel number Modulation system Reference power is adjusted factor
1 137 1 QPSK 0
2 173 1 QPSK 0
3 233 1 QPSK 0
4 317 1 QPSK 0
5 377 1 QPSK 0
6 461 1 QPSK 0
7 650 2 QPSK 0
8 792 2 QPSK 0
9 931 2 QPSK 0
10 1262 3 QPSK 0
11 1483 3 QPSK 0
12 1742 3 QPSK 0
13 2279 4 QPSK 0
14 2583 4 QPSK 0
15 3319 5 QPSK 0
16 3565 5 QPSK -1
17 3565 5 QPSK -2
18 3565 5 QPSK -3
19 3565 5 QPSK -4
20 3565 5 QPSK -5
21 3565 5 QPSK -6
22 3565 5 QPSK -7
23 3565 5 QPSK -8
24 3565 5 QPSK -9
25 3565 5 QPSK -10
26 3565 5 QPSK -11
27 3565 5 QPSK -12
28 3565 5 QPSK -13
29 3565 5 QPSK -14
30 3565 5 QPSK -15
UE is according to the reference received signal to noise ratio of its measurement, according to self demodulation ability, the corresponding relation of Block Error Rate when being HS-DSCH channel received signal to noise ratio and different transpost formats, certain transformat satisfies 10% first Block Error Rate (the Initial-transmission Block Error Ratio that passes when determining this signal to noise ratio, IBLER) CQI value, by uplink high-speed special physical control channel (High Speed-Dedicated PhysicalControl Channel, HS-DPCCH) periodic feedback current C QI information.
With reference to figure 1, this figure is the schematic diagram of prior art base station high speed downlink packet access dispatching user data.
Base station (NodeB) receives the information such as CQI of UE feedback, CQI and each user's data by the UE feedback transmits demand then, each subframe selects to transmit the transformat of the HS-DSCH channel of user data for the user who needs scheduling: transmission block length, HS-PDSCH code channel number, modulation system and transmitted power ratio, with the quality of reception that guarantees that single transmits under this channel condition, make full use of AMC and HARQ gain, related transport format information sends to UE by down channel HS-SCCH in advance.
During above-mentioned base station dispatching users data, owing to be subjected to UE to realize the influence of performance difference and different reporting policies, also because the variation of channel fading and the time delay that CQI measures scheduling, UE is under the different channels condition, even identical received signal to noise ratio is arranged, also may show demodulation performance difference, therefore, the CQI that UE measures feedback can not fully truly reflect real-time channel quality, doing demodulation performance and the channel quality that AMC sends according to CQI during the system call user data can't be adaptive, promptly can not make full use of the AMC of HSDPA and HARQ gain: CQI and measure extremely to advance, it is higher just to pass Block Error Rate, does not make full use of the AMC function, cause repeatedly retransmitting back residual Block Error Rate (Residual Block Error Ratio, RBLER) higher, need more high-rise the re-transmission, the customer service quality can't guarantee; CQI measures too conservative, and it is on the low side just to pass Block Error Rate, and the HARQ gain that does not utilize physical layer retransmission to merge needing to cause more power.
Summary of the invention
The technical problem that the present invention solves is to consider the measurement of different UEs and the demodulation performance adaptivity difference to environmental change during HSDPA uses, the method and the device of a kind of channel quality indication calibrating and base station dispatching users data are provided, during with the assurance base station dispatching users data, make full use of the AMC of HSDPA and the gain that the HARQ technology is brought, the power efficiency that makes data transmit is the highest.
For addressing the above problem, channel quality indication calibrating method of the present invention comprises:
Receive channel quality indication and the channel receiving feedback information of subscriber equipment to base station feedback;
Calibrate the channel quality indication of described subscriber equipment feedback according to the channel receiving feedback information of described subscriber equipment feedback.
Wherein, described calibration channel quality indication specifically comprises:
Channel receiving feedback information and dispatch user data information according to the subscriber equipment feedback are determined channel quality indication correction adjusted value;
According to the channel quality indication correction of described channel quality indication correction adjusted value to the subscriber equipment feedback, the channel quality that obtains calibrating indication.
Wherein, described definite channel quality indication correction adjusted value specifically comprises:
The target that channel receives in default calibration measurement period and the calibration measurement period just passes Block Error Rate or object residue Block Error Rate or target statistics of error rate;
Channel receiving feedback information statistics according to the subscriber equipment feedback in described default calibration measurement period obtains just passing Block Error Rate or residual Block Error Rate or statistics of error rate;
Calculate and just pass first biography Block Error Rate deviation probability or the residual Block Error Rate deviation probability of residual Block Error Rate and object residue Block Error Rate or the statistics of error rate deviation probability of statistics of error rate and target statistics of error rate that Block Error Rate and target just pass Block Error Rate in the predetermined period;
Determine corresponding channel quality indication correction adjusted value according to described Block Error Rate deviation probability or residual Block Error Rate deviation probability or the statistics of error rate deviation probability of just passing.
Wherein, described channel receiving feedback information comprises: ACK/NACK/DTX information.
Correspondingly, a kind of channel quality indication calibrating device of the present invention comprises:
Receiving system is used to receive channel quality indication and the channel receiving feedback information that subscriber equipment feeds back;
Calibrating installation is used for calibrating according to the channel receiving feedback information of described subscriber equipment feedback the channel quality indication of this subscriber equipment feedback.
Wherein, described calibrating installation specifically comprises:
Channel quality indication correction adjusted value determining unit is used for determining channel quality indication correction adjusted value according to the channel receiving feedback information and the dispatch user data information of subscriber equipment feedback;
The correction unit is used for according to the channel quality indication correction of described channel quality indication correction adjusted value to the subscriber equipment feedback, the channel quality that obtains calibrating indication.
Wherein, channel quality indication correction adjusted value determining unit comprises:
Statistic unit, the channel receiving feedback information statistics according to the subscriber equipment feedback in described default calibration measurement period obtains just passing Block Error Rate or residual Block Error Rate or statistics of error rate;
Computing unit calculates and just passes first biography Block Error Rate deviation probability or the residual Block Error Rate deviation probability of residual Block Error Rate and object residue Block Error Rate or the statistics of error rate deviation probability of statistics of error rate and target statistics of error rate that Block Error Rate and target just pass Block Error Rate in the predetermined period;
Determining unit is determined corresponding channel quality indication correction adjusted value according to described Block Error Rate deviation probability or residual Block Error Rate deviation probability or the statistics of error rate deviation probability of just passing.
Wherein, described channel receiving feedback information comprises: ACK/NACK/DTX information.
Correspondingly, the method for a kind of base station dispatching users data of the present invention comprises:
Channel quality indication to the subscriber equipment feedback is calibrated;
Determine the transformat of dispatch user data of the channel quality indication of corresponding described calibration;
Send according to described definite transformat dispatch user data.
Wherein, described channel quality indication calibrating to the subscriber equipment feedback specifically comprises:
Receive channel quality indication and the channel receiving feedback information of subscriber equipment to base station feedback;
Calibrate the channel quality indication of this subscriber equipment feedback according to the channel receiving feedback information of subscriber equipment feedback.
Wherein, described channel receiving feedback information calibration channel quality indication according to the subscriber equipment feedback specifically comprises:
Channel receiving feedback information and dispatch user data information according to the subscriber equipment feedback are determined channel quality indication correction adjusted value;
According to the channel quality indication correction of described channel quality indication correction adjusted value to the subscriber equipment feedback, the channel quality that obtains calibrating indication.
Wherein, described definite channel quality indication correction adjusted value specifically comprises:
The target that channel receives in default calibration measurement period and the calibration measurement period just passes Block Error Rate or object residue Block Error Rate or target statistics of error rate;
Channel receiving feedback information statistics according to the subscriber equipment feedback in described default calibration measurement period obtains just passing Block Error Rate or residual Block Error Rate or statistics of error rate;
Calculate and just pass first biography Block Error Rate deviation probability or the residual Block Error Rate deviation probability of residual Block Error Rate and object residue Block Error Rate or the statistics of error rate deviation probability of statistics of error rate and target statistics of error rate that Block Error Rate and target just pass Block Error Rate in the predetermined period;
Determine corresponding channel quality indication correction adjusted value according to described Block Error Rate deviation probability or residual Block Error Rate deviation probability or the statistics of error rate deviation probability of just passing.
Wherein, also comprise before the indication of calibration channel quality:
Channel quality indication carrying out filtering to the subscriber equipment feedback.
Wherein, described channel receiving feedback information comprises: ACK/NACK/DTX information.
Correspondingly, the device of a kind of base station dispatching users data of the present invention comprises:
The channel quality indication calibrating device is used for the channel quality indication of subscriber equipment feedback is calibrated;
Transformat is determined device, is used to obtain the transformat of dispatch user data of the channel quality indication of corresponding described calibration;
Scheduling transmitting device is used for sending according to described definite transformat dispatch user data.
Wherein, described channel quality indication calibrating device comprises:
Receiving element is used to receive channel quality indication and the channel receiving feedback information that subscriber equipment feeds back;
Alignment unit is used for according to the channel receiving feedback information of described subscriber equipment feedback the channel quality indication of this subscriber equipment feedback being calibrated.
Wherein, described alignment unit specifically comprises:
Channel quality indication correction adjusted value determining unit is used for determining channel quality indication correction adjusted value according to the channel receiving feedback information and the dispatch user data information of subscriber equipment feedback;
The correction unit is used for according to the channel quality indication correction of described channel quality indication correction adjusted value to the subscriber equipment feedback, the channel quality that obtains calibrating indication.
Wherein, channel quality indication correction adjusted value determining unit comprises:
Statistic unit, the channel receiving feedback information statistics according to the subscriber equipment feedback in described default calibration measurement period obtains just passing Block Error Rate or residual Block Error Rate or statistics of error rate;
Computing unit calculates and just passes first biography Block Error Rate deviation probability or the residual Block Error Rate deviation probability of residual Block Error Rate and object residue Block Error Rate or the statistics of error rate deviation probability of statistics of error rate and target statistics of error rate that Block Error Rate and target just pass Block Error Rate in the predetermined period;
Determining unit is determined corresponding channel quality indication correction adjusted value according to described Block Error Rate deviation probability or residual Block Error Rate deviation probability or the statistics of error rate deviation probability of just passing.
In addition, also comprise:
Filter is used for channel quality indication the carrying out filtering that the alignment unit calibration is fed back subscriber equipment before.
Wherein, described channel receiving feedback information comprises: ACK/NACK/DTX information.
Compared with prior art, the present invention has following beneficial effect:
Among the present invention during base station dispatching users data, at first according to the channel receiving information of UE receiving scheduling data feedbacks, the indication of adaptive calibration channel quality, the reference CQI of the calibration that output and channel quality are adaptive substantially, and then the transformat of selecting user data to send according to the CQI of described calibration, can guarantee that IBLER or SBLER that the UE data transmit reach target value set, thereby make full use of the AMC of HSDPA and the gain that the HARQ technology is brought;
In addition, according to a preferred embodiment of the invention, the CQI to the UE feedback among the present invention at first carries out filtering, realizes the smoothing processing to CQI, thereby suppresses its excessive variance, avoids the influence of the excessive CQI of variance to the HSDPA demodulation performance.
Description of drawings
Fig. 1 is the schematic diagram of prior art base station HSDPA dispatch user data;
Fig. 2 is that prior art CQI measures feedback and the HS-DSCH channel sends schematic diagram;
Fig. 3 is the general illustration of dispatch user data of the present invention;
Fig. 4 is the main flow chart that carries out channel quality indication calibrating among the present invention;
Fig. 5 is the present invention carries out filtering to CQI a principle schematic;
Fig. 6 is the main device composition frame chart of base station of the present invention HSDPA dispatch user data;
Fig. 7 is the composition frame chart of channel quality indication calibrating device among Fig. 6.
Embodiment
When core of the present invention was base station HSDPA dispatch user data, at first the CQI to the UE feedback calibrated; Determine the transformat of dispatch user data of the CQI of corresponding described calibration then; Send according to described definite transformat dispatch user data at last.Carry out adaptive calibration by CQI, can guarantee that IBLER that the UE data transmit or SBLER or RBLER reach target value set, thereby make full use of the AMC of HSDPA and the gain that the HARQ technology is brought, be described in detail below UE feedback.
With reference to figure 2, this figure is that prior art CQI measures feedback and the HS-DSCH channel sends schematic diagram.As shown in Figure 2, UE is carved into feedback and differs 1 time slot constantly when measuring CQI, because up HS-DPCCH channel demodulation, and the HS-SCCH channel shifts to an earlier date two time slots of HS-PDSCH channel and sends, and the reference time that CQI measures differs 7.5 time slots at least to HS-DSCH channel transmitting time;
7.5 behind the individual time slot, UE is by up HS-DPCCH channel feedback channel receiving feedback information: if do not detect the HS-SCCH channel, UE is defined as not sending to its HS-DSCH channel, then feeds back DTX information; Decipher correctly then feeding back ACK information if the HS-DSCH channel receives, then feed back nack message if the HS-DSCH channel receives decoding error; Described ACK or nack message and channel quality CQI adopt time-multiplexed mode independently to send.
Can utilize above-mentioned channel receiving feedback information (ACK/NACK/DTX information) etc. that CQI is calibrated among the present invention, and then determine that according to the CQI of calibration corresponding transformat carries out scheduling user data, its overall technological scheme block diagram as shown in Figure 3, having increased the channel quality adaptive calibration during base station dispatching users data handles, the UE that is each HSDPA connection carries out the channel quality adaptive calibration, during specific implementation, because it may not be continuous that the base station sends data to the user, therefore the base station is according to channel receiving feedback informations such as ACK that self dispatches reception UE feedback or NACK, the channel quality adaptive calibration is finished according to described UE channel receiving feedback information in the base station then, is described in detail below.
With reference to figure 4, this figure is the main flow chart of channel quality indication calibrating of the present invention, mainly may further comprise the steps:
Step s11 receives CQI and the channel receiving feedback information of UE to base station feedback, and with reference to above stated specification, described channel receiving feedback information mainly comprises: information such as ACK/NACK/DTX.
Step s12, channel receiving feedback information and dispatch user data information according to the UE feedback are determined CQI correction adjusted value, during specific implementation, described definite CQI correction adjusted value can adopt several different methods, the target IBLER that channel receives in a for example at first default calibration measurement period and the calibration measurement period; In described default calibration measurement period, add up the IBLER that obtains reality then according to the channel receiving feedback information of subscriber equipment feedback; Calculate the IBLER deviation probability of interior IBLER of predetermined calibration measurement period and target IBLER again; Determine corresponding channel quality indication correction adjusted value according to described IBLER deviation probability at last.
Need explanation, in the practical application, also can (StatisticalBlock Error Rate SBLER) calculates CQI correction adjusted value, is about to above-mentioned IBLER and is changed to RBLER or SBLER, also can obtain CQI correction adjusted value according to RBLER or statistics of error rate.
Step s13 is according to the CQI correction of described CQI correction adjusted value to the subscriber equipment feedback, the CQI that obtains calibrating.
With concrete example, suppose that the current CQI of the reporting value of above-mentioned adaptive calibration UE is CQI UE(N), current CQI correction adjusted value is CQI Δ(N), the reference CQI value after the output calibration is CQI System(N)=CQI UE(N)+CQI Δ(N), the base station is according to CQI System(N) and transformat mapping form determine corresponding described CQI System(N) transformat dispatch user data sends.
Wherein for described CQI correction adjusted value CQI ΔSpecifically can determine according to following computational methods:
When 1, UE sets up HSDPA connection beginning, CQI ΔInitial value is 0, and parameters C QI is set ΔUp and CQI ΔDown is as the bound of CQI correction adjusted value.
2, a calibration of definition statistic period T is added up according to the ACK/NACK/DTX information of T base station scheduling information and UE feedback in the time period, for example adds up IBLER and SBLER is respectively IBLER MeasureAnd SBLER Measure: wherein IBLER is to receive UE feedback DTX and NACK in all first biography data blocks that the base station dispatches for this UE in the T time period or only is the ratio of NACK; SBLER is to receive DTX and NACK in all transmission data blocks that the base station dispatches for this UE in the T time period or only is the ratio of NACK.
3, set the desired value parameter of IBLER or SBLER or RBLER in base station system, be respectively IBLER Target, SBLER TargetOr RBLER Target, during specific implementation, can also do the self adaptation adjustment to described target component value according to the measurement of wireless environment.
4, the calibration statistic period T finishes, and can calculate CQI correction adjusted value Δ CQI according to following formula:
ΔCQI = CQ I fact × IBLE R t arg et - IBLE R measure IBLER t arg et
Wherein, CQI adjusts step-length CQI FactCan be provided with as parameter.
According to different strategies, IBLER in the above-mentioned formula MeasureCan use SBLER MeasureOr RBLER MeasureReplace IBLER TargetCorrespondingly can use SBLER TargetOr RBLER TargetReplace: wherein for the situation of adding up according to IBLER, if T in the time not this UE just pass the feedback information (system do not dispatch the data of this UE or dispatch this UE data all be re-transmission) of data, then Δ CQI=0; For the situation of adding up according to SBLER, if T in the time not this UE transmit the feedback information (data of this UE are not dispatched by system, no matter are just to pass or retransmit) of data, then Δ CQI=0.
5, calculate current CQI correction adjusted value: CQI Δ(M)=CQI Δ(M-1)+Δ CQI (M).When the correction adjusted value that calculates greater than upper limit CQI ΔUp, current CQI ΔDirect value CQI ΔUp, when the correction adjusted value that calculates less than lower limit CQI ΔDown, current CQI ΔDirect value CQI ΔDown.
IBLER in the invention described above MeasureOr SBLER MeasureOr RBLER MeasureThe calibration measurement period can fix, also can add up, for example IBLER according to the number of times of base station system actual schedule MeasureStatistics is dispatched the Block Error Rate that passes at the beginning of N in the data block, SBLER for the base station for this UE MeasureStatistics is the Block Error Rate in N data block of this UE scheduling for the base station.
In addition, because the CQI variance that UE reports may be excessive, also can consider among the present invention to carry out the CQI smoothing processing in base station side, to suppress its excessive variance, guarantee the AMC gain, specifically be that the CQI to the subscriber equipment feedback carries out filtering before calibration CQI.
Specifically, suppose CQI ReportedThe CQI that reports for the UE measurement; CQI SmoothedBe the CQI that reports through the UE measurement after the smoothing processing; CQI UseThe reference CQI that finally is used to select transformat for the base station; P HSDPACan distribute to the power of this user HSDPA business for the base station.
The present invention adopts CQI ReportedCarry out the mode of smothing filtering and handle, to suppress its excessive variance, the smothing filtering formula is:
CQI smoothed(N)＝α×CQI smoothed(N-1)+(1-α)×CQI reported(N)
Concrete level and smooth principle as shown in Figure 5, α is as the parameter setting, its span is more than or equal to 0, smaller or equal to 1, can carry out the self adaptation adjustment according to the information of channel measurement.
The following describes another aspect of the present invention.
With reference to figure 6, this figure is the main composition schematic diagram of the device of base station of the present invention high speed downlink packet access dispatching user data, specifically mainly comprises:
Channel quality indication calibrating device 11, the CQI that is mainly used in the subscriber equipment feedback calibrates, and with reference to above stated specification, during specific implementation, the device of channel quality indication calibrating described in the present invention 11 can carry out the CQI calibration according to the channel receiving feedback information;
Transformat is determined device 12, is mainly used in the transformat of the dispatch user data of the CQI that determines corresponding described calibration;
Scheduling transmitting device 13 is mainly used in according to described definite transformat dispatch user data transmission.
Describe channel quality indication calibrating device 11 below in detail, with reference to figure 7, channel quality indication calibrating device 11 of the present invention mainly comprises:
Receiving element 111 is used to receive CQI and the channel receiving feedback information that subscriber equipment feeds back;
Alignment unit 112 is used for according to the channel receiving feedback information of described subscriber equipment feedback the CQI that this subscriber equipment feeds back being calibrated.
During specific implementation, described alignment unit 112 mainly comprises:
Channel quality indication correction adjusted value determining unit is used for determining CQI correction adjusted value according to the channel receiving feedback information and the dispatch user data information of subscriber equipment feedback;
The correction unit is used for according to the CQI correction of described CQI correction adjusted value to the subscriber equipment feedback, the CQI that obtains calibrating.
For described channel quality indication correction adjusted value determining unit, specifically can comprise:
Statistic unit, described statistic unit are mainly used in IBLER or RBLER or the SBLER that obtains reality in default calibration measurement period according to the channel receiving feedback information statistics of subscriber equipment feedback;
Computing unit, IBLER deviation probability or the RBLER deviation probability of RBLER and target RBLER or the SBLER deviation probability of SBLER and target SBLER of IBLER and target IBLER in the calculating predetermined period;
Determining unit is according to described IBLER deviation probability or RBLER deviation probability or the definite corresponding CQI correction of SBLER deviation probability adjusted value.
Need illustrate,, also can consider among the present invention to carry out the CQI smoothing processing,, guarantee that AMC gains, and, specifically also can comprise in the device of dispatch user data among the present invention for this reason to suppress its excessive variance in base station side because the CQI variance that UE reports may be excessive:
Filter 14, described filter 14 are mainly used in the CQI that before the alignment unit calibration UE is fed back and carry out filtering, realize the CQI smoothing processing.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (20)

1、一种信道质量指示校准方法，其特征在于，包括：1. A channel quality indication calibration method, characterized in that, comprising: 接收用户设备向基站反馈的信道质量指示和信道接收反馈信息；Receive the channel quality indication and channel reception feedback information fed back by the user equipment to the base station; 根据所述用户设备反馈的信道接收反馈信息校准所述用户设备反馈的信道质量指示。Calibrating the channel quality indication fed back by the user equipment according to the channel reception feedback information fed back by the user equipment. 2、根据权利要求1所述的信道质量指示校准方法，其特征在于，所述校准信道质量指示具体包括：2. The channel quality indicator calibration method according to claim 1, wherein the calibration channel quality indicator specifically includes: 根据用户设备反馈的信道接收反馈信息和调度用户数据信息确定信道质量指示纠偏调整值；Determine the channel quality indicator deviation correction adjustment value according to the channel reception feedback information fed back by the user equipment and the scheduling user data information; 根据所述信道质量指示纠偏调整值对用户设备反馈的信道质量指示纠偏，得到校准的信道质量指示。The CQI fed back by the user equipment is corrected according to the CQI deviation correction adjustment value to obtain a calibrated CQI. 3、根据权利要求2所述的信道质量指示校准方法，其特征在于，所述确定信道质量指示纠偏调整值具体包括：3. The channel quality indicator calibration method according to claim 2, wherein said determining the channel quality indicator correction adjustment value specifically comprises: 预设校准统计周期以及校准统计周期内信道接收的目标初传误块率或目标残留误块率或目标统计误块率；The preset calibration statistical period and the target initial transmission block error rate or target residual block error rate or target statistical block error rate received by the channel within the calibration statistical period; 在所述预设的校准统计周期内根据用户设备反馈的信道接收反馈信息统计得到初传误块率或残留误块率或统计误块率；Obtain the initial transmission block error rate or residual block error rate or statistical block error rate according to the channel reception feedback information fed back by the user equipment within the preset calibration statistical period; 计算预定周期内初传误块率与目标初传误块率的初传误块率偏差概率或残留误块率与目标残留误块率的残留误块率偏差概率或统计误块率与目标统计误块率的统计误块率偏差概率；Calculate the error probability of the initial block error rate between the initial block error rate and the target initial block error rate within the predetermined period, or the residual block error rate deviation probability between the residual block error rate and the target residual block error rate, or calculate the block error rate and target statistics Statistical block error rate deviation probability of block error rate; 根据所述初传误块率偏差概率或残留误块率偏差概率或统计误块率偏差概率确定对应的信道质量指示纠偏调整值。Determine the corresponding channel quality indicator deviation correction adjustment value according to the initial transmission block error rate deviation probability or residual block error rate deviation probability or statistical block error rate deviation probability. 4、根据权利要求1、2或3任一项所述的信道质量指示校准方法，其特征在于，所述信道接收反馈信息包括：ACK/NACK/DTX信息。4. The channel quality indicator calibration method according to any one of claims 1, 2 or 3, wherein the channel reception feedback information includes: ACK/NACK/DTX information. 5、一种信道质量指示校准装置，其特征在于，包括：5. A channel quality indication calibration device, characterized in that it comprises: 接收装置，用于接收用户设备反馈的信道质量指示和信道接收反馈信息；The receiving device is configured to receive the channel quality indication and the channel reception feedback information fed back by the user equipment; 校准装置，用于根据所述用户设备反馈的信道接收反馈信息校准该用户设备反馈的信道质量指示。Calibration means, configured to calibrate the channel quality indicator fed back by the user equipment according to the channel reception feedback information fed back by the user equipment. 6、根据权利要求5所述的信道质量指示校准装置，其特征在于，所述校准装置具体包括：6. The channel quality indicator calibration device according to claim 5, wherein the calibration device specifically comprises: 信道质量指示纠偏调整值确定单元，用于根据用户设备反馈的信道接收反馈信息和调度用户数据信息确定信道质量指示纠偏调整值；The channel quality indication correction adjustment value determination unit is used to determine the channel quality indication deviation correction adjustment value according to the channel reception feedback information fed back by the user equipment and the scheduling user data information; 纠偏单元，用于根据所述信道质量指示纠偏调整值对用户设备反馈的信道质量指示纠偏，得到校准的信道质量指示。The deviation correction unit is configured to correct the deviation of the channel quality indication fed back by the user equipment according to the deviation correction adjustment value of the channel quality indication to obtain a calibrated channel quality indication. 7、根据权利要求6所述的信道质量指示校准装置，其特征在于，信道质量指示纠偏调整值确定单元包括：7. The channel quality indicator calibration device according to claim 6, wherein the channel quality indicator correction adjustment value determination unit includes: 统计单元，在所述预设的校准统计周期内根据用户设备反馈的信道接收反馈信息统计得到初传误块率或残留误块率或统计误块率；The statistical unit is configured to obtain the initial transmission block error rate or residual block error rate or statistical block error rate according to the channel reception feedback information fed back by the user equipment within the preset calibration statistical cycle; 计算单元，计算预定周期内初传误块率与目标初传误块率的初传误块率偏差概率或残留误块率与目标残留误块率的残留误块率偏差概率或统计误块率与目标统计误块率的统计误块率偏差概率；Calculation unit, calculating the deviation probability of the initial transmission block error rate between the initial transmission block error rate and the target initial transmission block error rate within a predetermined period, or the residual block error rate deviation probability or the statistical block error rate between the residual block error rate and the target residual block error rate The statistical block error rate deviation probability from the target statistical block error rate; 确定单元，根据所述初传误块率偏差概率或残留误块率偏差概率或统计误块率偏差概率确定对应的信道质量指示纠偏调整值。The determining unit is configured to determine a corresponding channel quality indicator deviation correction adjustment value according to the initial transmission block error rate deviation probability or residual block error rate deviation probability or statistical block error rate deviation probability. 8、根据权利要求5、6或7任一项所述的信道质量指示校准装置，其特征在于，所述信道接收反馈信息包括：ACK/NACK/DTX信息。8. The channel quality indicator calibration device according to any one of claims 5, 6 or 7, wherein the channel reception feedback information includes: ACK/NACK/DTX information. 9、一种基站调度用户数据的方法，其特征在于，包括：9. A method for scheduling user data by a base station, comprising: 对用户设备反馈的信道质量指示进行校准；Calibrate the channel quality indication fed back by the user equipment; 确定对应所述校准的信道质量指示的调度用户数据的传输格式；determining a transmission format for scheduled user data corresponding to said calibrated channel quality indication; 根据所述确定的传输格式调度用户数据发送。Scheduling user data transmission according to the determined transmission format. 10、根据权利要求9所述的基站调度用户数据的方法，其特征在于，所述对用户设备反馈的信道质量指示校准具体包括：10. The method for scheduling user data by a base station according to claim 9, wherein the calibration of the channel quality indication fed back to the user equipment specifically includes: 接收用户设备向基站反馈的信道质量指示和信道接收反馈信息；Receive channel quality indication and channel reception feedback information fed back by user equipment to the base station; 根据用户设备反馈的信道接收反馈信息校准该用户设备反馈的信道质量指示。Calibrate the channel quality indicator fed back by the user equipment according to the channel reception feedback information fed back by the user equipment. 11、根据权利要求10所述的基站调度用户数据的方法，其特征在于，所述根据用户设备反馈的信道接收反馈信息校准信道质量指示具体包括：11. The method for scheduling user data by a base station according to claim 10, wherein the calibrating the channel quality indicator according to the channel reception feedback information fed back by the user equipment specifically includes: 根据用户设备反馈的信道接收反馈信息和调度用户数据信息确定信道质量指示纠偏调整值；Determine the channel quality indicator deviation correction adjustment value according to the channel reception feedback information fed back by the user equipment and the scheduling user data information; 根据所述信道质量指示纠偏调整值对用户设备反馈的信道质量指示纠偏，得到校准的信道质量指示。The CQI fed back by the user equipment is corrected according to the CQI deviation correction adjustment value to obtain a calibrated CQI. 12、根据权利要求11所述的基站调度用户数据的方法，其特征在于，所述确定信道质量指示纠偏调整值具体包括：12. The method for scheduling user data by a base station according to claim 11, wherein the determining the channel quality indicator deviation correction adjustment value specifically comprises: 预设校准统计周期以及校准统计周期内信道接收的目标初传误块率或目标残留误块率或目标统计误块率；The preset calibration statistical period and the target initial transmission block error rate or target residual block error rate or target statistical block error rate received by the channel within the calibration statistical period; 在所述预设的校准统计周期内根据用户设备反馈的信道接收反馈信息统计得到初传误块率或残留误块率或统计误块率；Obtain the initial transmission block error rate or residual block error rate or statistical block error rate according to the channel reception feedback information fed back by the user equipment within the preset calibration statistical period; 计算预定周期内初传误块率与目标初传误块率的初传误块率偏差概率或残留误块率与目标残留误块率的残留误块率偏差概率或统计误块率与目标统计误块率的统计误块率偏差概率；Calculate the error probability of the initial block error rate between the initial block error rate and the target initial block error rate within the predetermined period, or the residual block error rate deviation probability between the residual block error rate and the target residual block error rate, or calculate the block error rate and target statistics Statistical block error rate deviation probability of block error rate; 根据所述初传误块率偏差概率或残留误块率偏差概率或统计误块率偏差概率确定对应的信道质量指示纠偏调整值。Determine the corresponding channel quality indicator deviation correction adjustment value according to the initial transmission block error rate deviation probability or residual block error rate deviation probability or statistical block error rate deviation probability. 13、根据权利要求9、10、11或12任一项所述的基站调度用户数据的方法，其特征在于，校准信道质量指示之前还包括：13. The method for scheduling user data by a base station according to any one of claims 9, 10, 11 or 12, characterized in that before calibrating the channel quality indicator, it further includes: 对用户设备反馈的信道质量指示进行滤波。Filtering the channel quality indication fed back by the user equipment. 14、根据权利要求13所述的基站调度用户数据的方法，其特征在于，所述信道接收反馈信息包括：ACK/NACK/DTX信息。14. The method for scheduling user data by a base station according to claim 13, wherein the channel reception feedback information includes: ACK/NACK/DTX information. 15、一种基站调度用户数据的装置，其特征在于，包括：15. A device for scheduling user data by a base station, comprising: 信道质量指示校准装置，用于对用户设备反馈的信道质量指示进行校准；A channel quality indicator calibration device, configured to calibrate the channel quality indicator fed back by the user equipment; 传输格式确定装置，用于获取对应所述校准的信道质量指示的调度用户数据的传输格式；A transmission format determining device, configured to obtain the transmission format of the scheduled user data corresponding to the calibrated channel quality indication; 调度发送装置，用于根据所述确定的传输格式调度用户数据发送。A scheduling sending device, configured to schedule user data sending according to the determined transmission format. 16、根据权利要求15所述的基站调度用户数据的装置，其特征在于，所述信道质量指示校准装置包括：16. The device for scheduling user data by a base station according to claim 15, wherein the channel quality indicator calibration device comprises: 接收单元，用于接收用户设备反馈的信道质量指示和信道接收反馈信息；A receiving unit, configured to receive a channel quality indication and channel reception feedback information fed back by the user equipment; 校准单元，用于根据所述用户设备反馈的信道接收反馈信息对该用户设备反馈的信道质量指示进行校准。A calibration unit, configured to calibrate the channel quality indicator fed back by the user equipment according to the channel reception feedback information fed back by the user equipment. 17、根据权利要求16所述的基站调度用户数据的装置，其特征在于，所述校准单元具体包括：17. The device for scheduling user data by a base station according to claim 16, wherein the calibration unit specifically includes: 信道质量指示纠偏调整值确定单元，用于根据用户设备反馈的信道接收反馈信息和调度用户数据信息确定信道质量指示纠偏调整值；The channel quality indication correction adjustment value determination unit is used to determine the channel quality indication deviation correction adjustment value according to the channel reception feedback information fed back by the user equipment and the scheduling user data information; 纠偏单元，用于根据所述信道质量指示纠偏调整值对用户设备反馈的信道质量指示纠偏，得到校准的信道质量指示。The deviation correction unit is configured to correct the deviation of the channel quality indication fed back by the user equipment according to the deviation correction adjustment value of the channel quality indication to obtain a calibrated channel quality indication. 18、根据权利要求17所述的基站调度用户数据的装置，其特征在于，信道质量指示纠偏调整值确定单元包括：18. The device for scheduling user data by a base station according to claim 17, characterized in that the channel quality indicator deviation correction adjustment value determination unit includes: 统计单元，在所述预设的校准统计周期内根据用户设备反馈的信道接收反馈信息统计得到初传误块率或残留误块率或统计误块率；The statistical unit is configured to obtain the initial transmission block error rate or residual block error rate or statistical block error rate according to the channel reception feedback information fed back by the user equipment within the preset calibration statistical cycle; 计算单元，计算预定周期内初传误块率与目标初传误块率的初传误块率偏差概率或残留误块率与目标残留误块率的残留误块率偏差概率或统计误块率与目标统计误块率的统计误块率偏差概率；Calculation unit, calculating the deviation probability of the initial transmission block error rate between the initial transmission block error rate and the target initial transmission block error rate within a predetermined period, or the residual block error rate deviation probability or the statistical block error rate between the residual block error rate and the target residual block error rate The statistical block error rate deviation probability from the target statistical block error rate; 确定单元，根据所述初传误块率偏差概率或残留误块率偏差概率或统计误块率偏差概率确定对应的信道质量指示纠偏调整值。The determining unit is configured to determine a corresponding channel quality indicator deviation correction adjustment value according to the initial transmission block error rate deviation probability or residual block error rate deviation probability or statistical block error rate deviation probability. 19、根据权利要求15、16、17或18任一项所述的基站调度用户数据的装置，其特征在于，还包括：19. The device for scheduling user data by a base station according to any one of claims 15, 16, 17 or 18, further comprising: 滤波装置，用于校准单元校准之前对用户设备反馈的信道质量指示进行滤波。The filtering device is used for filtering the channel quality indication fed back by the user equipment before the calibration by the calibration unit. 20、根据权利要求19所述的基站调度用户数据的装置，其特征在于，所述信道接收反馈信息包括：ACK/NACK/DTX信息。20. The device for scheduling user data by a base station according to claim 19, wherein the channel reception feedback information includes: ACK/NACK/DTX information.
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