CN101841847B - Feedback method, system and device for channel quality indication information - Google Patents

Feedback method, system and device for channel quality indication information Download PDF

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Publication number
CN101841847B
CN101841847B CN 200910080451 CN200910080451A CN101841847B CN 101841847 B CN101841847 B CN 101841847B CN 200910080451 CN200910080451 CN 200910080451 CN 200910080451 A CN200910080451 A CN 200910080451A CN 101841847 B CN101841847 B CN 101841847B
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China
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cqi value
residential quarter
cqi
described
revised
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CN 200910080451
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Chinese (zh)
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CN101841847A (en
Inventor
高秋彬
孙韶辉
缪德山
贾保灵
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电信科学技术研究院
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Abstract

The invention discloses a feedback method for channel quality indication information, which is that a terminal learns a service cell set which jointly transmits data to the terminal; for each cell in the service cell set, the channel quality indication (CQI) value of the cell to the terminal is determined, the CQI value is corrected according to the physical antenna number or the forming gain adjustment quantity of the cell sent by a network; and the comprehensive CQI value of the service cell set is determined according to the corrected CQI values and is transmitted to the network. The embodiment of the invention additionally discloses a feedback system and a feed back device for channel quality indication information. By adopting the invention, the feedback of the CQI information under joint transmission by the terminal is realized.

Description

The feedback method of channel quality indication (CQI) information, system and equipment

Technical field

The present invention relates to wireless communication field, relate in particular to a kind of feedback method, system and equipment of channel quality indication (CQI) information.

Background technology

International Telecommunications Union (ITU) requires the maximum system transmission bandwidth of IMT-Advanced to reach 100MHz, the peak rate of up-downgoing transfer of data will reach 500Mbps and 1Gbps respectively, and system's average spectral efficiency (ase) especially edge spectrum efficiency has been proposed very high demand.In order to satisfy the requirement to the IMT-Advanced system, 3G (Third Generation) Moblie standardization body (3GPP) has proposed to adopt the multi-point cooperative transmission technology to improve the performance of system in long-term evolution upgrading (LTE-Advanced) system.

The multi-point cooperative transmission technology is the scheme that a plurality of transfer points of separating on the geographical position are carried out cooperative transmission, and in general, a plurality of transfer points are base stations of different districts.The multi-point cooperative transmission scheme mainly is divided into two classes: combined dispatching and unite transmission, wherein:

Combined dispatching is the coordination by the time between the residential quarter, frequency and space resources, for different UE distributes mutually orthogonal resource, avoids interference each other.The interference of minizone is the principal element of restriction Cell Edge User equipment (UE) performance, so combined dispatching can reduce the interference of minizone, thereby improves the performance of cell edge UE.

From to only have a residential quarter to send data to UE in the combined dispatching scheme different, there are a plurality of residential quarters to send data to UE simultaneously in the associating delivery plan, to strengthen the reception signal of UE.As shown in Figure 1, the base station of three residential quarters sends data to same UE on identical resource, and UE receives the signal of a plurality of residential quarters simultaneously.If a plurality of residential quarters send identical data to UE, can promote the signal quality that UE receives after the signal stack from a plurality of residential quarters, thereby improve systematic function.

In existing Long Term Evolution (LTE) system, the common pilot signal that UE sends according to the base station estimates this base station to the channel information of UE, and calculate channel quality indication (CQI) information according to this channel information and feed back to the base station, the index that may also have pre-coding matrix (PMI) and the number of data streams (RI) together fed back together with CQI information.The CQI information of UE feedback is divided into broadband CQI information and subband CQI information.Broadband CQI information is the overall target of all frequency band upper signal channel quality of system, and subband CQI information is the index of the channel quality in one section frequency band range of reflection, and subband CQI information is that the LTE system is in the least unit of frequency domain internal feedback CQI.The base station can be dispatched according to this CQI information, resource is distributed and the operation such as modulating-coding speed (MCS) selection, has improved the availability of frequency spectrum after receiving the CQI information of UE feedback.

In the associating delivery plan, more than one to the base station of UE the transmission of data, so the CQI information of UE feedback also should reflect the channel quality of other cooperation districts except the channel quality that will reflect UE institute home cell.

In realizing process of the present invention, the inventor finds to exist in the prior art following technical problem:

When the multi-point cooperative transmission scheme of transmission is united in employing, do not have the implementation of concrete UE feedback CQI information, so UE can't carry out the feedback of CQI information.

Summary of the invention

The embodiment of the invention provides a kind of feedback method, system and equipment of channel quality indication (CQI) information, is used for solving prior art when the multi-point cooperative transmission scheme of transmission is united in employing, and UE can't carry out the problem of CQI information feedback.

The embodiment of the invention provides a kind of feedback method of channel quality indication (CQI) information, and the method comprises:

Terminal is known the service cell set that sends data to self uniting;

For each residential quarter in the described service cell set, determine this residential quarter to the channel quality indicator (CQI) value of described terminal, and according to physical antenna number or the figuration gain adjustment amount of this residential quarter of network side transmitted the CQI value of this residential quarter is revised;

Determine the comprehensive CQI value of described service cell set according to revised each CQI value, and should comprehensive CQI value send to network side;

The physical antenna number of described this residential quarter according to network side transmitted is revised the CQI value of this residential quarter and is comprised: the figuration gain adjustment amount of determining this residential quarter according to the physical antenna number of this residential quarter of network side transmitted; According to the figuration gain adjustment amount of determining the CQI value of this residential quarter is revised; Perhaps; Corresponding relation according to the CQI value that sets in advance, physical antenna number and CQI value adjustment amount, determine the CQI value adjustment amount corresponding with the physical antenna number of this residential quarter of the CQI value of this residential quarter, network side transmitted, adjust the CQI value of this residential quarter according to described CQI value adjustment amount, will adjust the result as revised CQI value.

The embodiment of the invention provides a kind of reponse system of channel quality indication (CQI) information, and this system comprises:

The base station is used for to physical antenna number or the figuration gain adjustment amount of terminal transmission residential quarter;

Terminal is used for knowing the service cell set that sends data to self uniting, and for each residential quarter in the described service cell set, determines that this residential quarter is to the channel quality indicator (CQI) value of described terminal; Physical antenna number or the figuration gain adjustment amount of this residential quarter of sending according to described base station are revised the CQI value of this residential quarter; Determine the comprehensive CQI value of described service cell set according to revised each CQI value, and should comprehensive CQI value send to described base station;

The physical antenna number of described this residential quarter of sending according to described base station is revised the CQI value of this residential quarter and comprised: the physical antenna number of this residential quarter of sending according to described base station is determined the figuration gain adjustment amount of this residential quarter; According to the figuration gain adjustment amount of determining the CQI value of this residential quarter is revised; Perhaps; Corresponding relation according to the CQI value that sets in advance, physical antenna number and CQI value adjustment amount, determine the CQI value adjustment amount corresponding with the physical antenna number of this residential quarter of the CQI value of this residential quarter, network side transmitted, adjust the CQI value of this residential quarter according to described CQI value adjustment amount, will adjust the result as revised CQI value.

The embodiment of the invention provides a kind of terminal, and this terminal comprises:

The Serving cell determining unit is used for knowing to this terminal and unites the service cell set that sends data;

The CQI amending unit is used for each residential quarter for described service cell set, determines that this residential quarter is to the channel quality indicator (CQI) value of this terminal; Physical antenna number or figuration gain adjustment amount according to this residential quarter of network side transmitted are revised the CQI value of this residential quarter;

Comprehensive CQI determining unit is used for according to revised each the CQI value of described CQI amending unit, determines the comprehensive CQI value of described service cell set;

The CQI transmitting element is used for and described comprehensive CQI value is sent to network side;

Described CQI amending unit comprises the first amending unit and the second amending unit, and described the first amending unit is used for determining according to the physical antenna number of this residential quarter of network side transmitted the figuration gain adjustment amount of this residential quarter; According to the figuration gain adjustment amount of determining the CQI value of this residential quarter is revised; Described the second amending unit, be used for the corresponding relation according to the CQI value, physical antenna number and the CQI value adjustment amount that set in advance, determine the CQI value adjustment amount corresponding with the physical antenna number of this residential quarter of the CQI value of this residential quarter, network side transmitted, adjust the CQI value of this residential quarter according to described CQI value adjustment amount, will adjust the result as revised CQI value.

Among the present invention, terminal is for each residential quarter of uniting to self in the service cell set that sends data, know that this residential quarter is to the CQI value of terminal, and according to physical antenna number or the figuration gain adjustment amount of this residential quarter of network side transmitted the CQI value of this residential quarter is revised, determine the comprehensive CQI value of service cell set according to revised each CQI value, and should comprehensive CQI value send to network side, so that UE can feed back the CQI information of the channel quality of reflection UE institute's home cell and other cooperation districts.

Description of drawings

Fig. 1 is the exemplary plot of associating delivery plan in the prior art;

The method flow schematic diagram that Fig. 2 provides for the embodiment of the invention;

The system configuration schematic diagram that Fig. 3 provides for the embodiment of the invention;

The device structure schematic diagram that Fig. 4 provides for the embodiment of the invention.

Embodiment

Implementation method for terminal feedback CQI information in the multicast communication scheme that is given in the associating transmission, the embodiment of the invention provides a kind of feedback method of channel quality indication (CQI) information, in this method, terminal know unite to self send data each Serving cell after the CQI value of this terminal, physical antenna number or figuration gain adjustment amount according to the Serving cell of network side transmitted are revised the CQI value of this residential quarter, and according to the definite comprehensive CQI value of revised CQI value, at last comprehensive CQI value is fed back to network side.The figuration gain adjustment amount of Serving cell is for characterizing the reference quantity of the beam forming gain of adjusting this Serving cell.

Referring to Fig. 2, the feedback method of the channel quality indication (CQI) information that the embodiment of the invention provides specifically may further comprise the steps:

Step 20: terminal is known the service cell set that sends data to self uniting;

Step 21: for each Serving cell in the service cell set, determine that this Serving cell is to the CQI value of terminal;

Step 22: physical antenna number or figuration gain adjustment amount according to the Serving cell of network side transmitted are revised the CQI value of this Serving cell;

Step 23: the comprehensive CQI value of determining service cell set according to revised each CQI value;

Step 24: the comprehensive CQI value that will determine sends to network side.

In the step 20, unite residential quarter and other cooperation districts that comprise in the service cell set that sends data that this terminal belongs to terminal, cooperation district utilizes identical resource to send identical data to terminal with the residential quarter that this terminal belongs to, and terminal receives the data that send each residential quarter in the service cell set simultaneously.

Terminal is known to the concrete mode of self uniting the service cell set that sends data can following two kinds:

The first, terminal are measured the intensity of the pilot signal that adjacent cell sends and/or are detected the time delay of downlink synchronous signal, and the intensity of this pilot signal and/or the time delay of downlink synchronous signal are sent to network side; Network side is determined to unite the service cell set that sends data to terminal according to the intensity of the pilot signal that receives and/or the time delay of downlink synchronous signal, and the information of definite service cell set is sent to terminal.

The second, the time delay of the intensity of the pilot signal that terminal measurement adjacent cell is sent and/or detection downlink synchronous signal, and determine to unite the service cell set that sends data to this terminal according to the time delay of the intensity of this pilot signal and/or downlink synchronous signal, the information of definite service cell set is sent to network side.

In the above-mentioned dual mode, according to the intensity of pilot signal determine to terminal unite the service cell set that sends data concrete grammar can for, the intensity of choosing pilot signal from the adjacent cell of pilot signal transmitted satisfies first N that an imposes a condition residential quarter, N the residential quarter of choosing is defined as uniting the Serving cell that sends data to terminal, first impose a condition can for: the intensity of pilot signal greater than the intensity of default signal strength threshold or pilot signal in default signal strength range etc.N is not more than the maximum service residential quarter that sets in advance and counts M.

In the above-mentioned dual mode, according to the time delay of downlink synchronous signal determine to terminal unite the service cell set that sends data concrete grammar can for, the time delay of choosing downlink synchronous signal from the adjacent cell of pilot signal transmitted satisfies second N that an imposes a condition residential quarter, N the residential quarter of choosing is defined as uniting the Serving cell that sends data to terminal, second impose a condition can for: the time delay of downlink synchronous signal less than the time delay of default signal time delay threshold value or downlink synchronous signal in default signal time delay scope etc.N is not more than the maximum service residential quarter that sets in advance and counts M.

In the above-mentioned dual mode, according to the time delay of the intensity of pilot signal and downlink synchronous signal determine to terminal unite the service cell set that sends data concrete grammar can for, the intensity of choosing pilot signal from the adjacent cell of pilot signal transmitted satisfies first and imposes a condition and the time delay of downlink synchronous signal satisfies second N that an imposes a condition residential quarter, and each residential quarter of choosing is defined as uniting the Serving cell that sends data to terminal.First imposes a condition can be with reference to foregoing description with the second particular content that imposes a condition.N is not more than the maximum service residential quarter that sets in advance and counts M.

Uniting the Serving cell that sends data to terminal can upgrade according to cycle regular hour, so terminal can be determined once to self uniting the Serving cell that sends data every the time cycle of setting.

In the step 21, it is as follows to determine that Serving cell arrives the concrete grammar of CQI value of terminal:

At first, the common pilot signal that sends according to this Serving cell carries out channel estimating;

Then, calculate this Serving cell to the CQI value of terminal according to channel estimation results, computational methods can be based on the transmission diversity mode, also can be based on other modes.When calculating the CQI value, can calculate a broadband CQI value, the channel quality of the whole frequency band that this broadband CQI value reflection system supports; Also can calculate a plurality of subband CQI values, the channel quality of certain frequency band that each subband CQI value reflection system supports.Concrete which kind of mode that adopts, the CQI value computation schema information of carrying in the indication signaling that can send to terminal in advance according to network side, calculation plot arrives broadband CQI value or a plurality of subband CQI value of terminal.

In the step 22, the method for the CQI value of this residential quarter being revised according to the physical antenna number of the Serving cell of network side transmitted specifically can adopt following two kinds:

The first, determine the figuration gain adjustment amount of this residential quarter according to the physical antenna number of the Serving cell of network side transmitted, according to the figuration gain adjustment amount of determining the CQI value of this residential quarter is revised, modification method can have multiple, for example, with the CQI value of this residential quarter and the figuration gain adjustment amount addition of determining, with addition result as revised CQI value; Perhaps, the CQI value of this residential quarter and the figuration gain adjustment amount of determining are multiplied each other, with multiplied result as revised CQI value.

The second, corresponding relation according to the CQI value that sets in advance, physical antenna number and CQI value adjustment amount, determine the CQI value adjustment amount corresponding with the physical antenna number of this residential quarter of the CQI value of this Serving cell, network side transmitted, adjust the CQI value of this residential quarter according to this CQI value adjustment amount, will adjust the result as revised CQI value.The method of adjusting the CQI value of residential quarter according to CQI value adjustment amount can have multiple, for example, and with CQI value and the addition of CQI value adjustment amount of residential quarter, subtract each other, multiply each other etc.

The method of the CQI value of this residential quarter being revised according to the figuration gain adjustment amount of the Serving cell of network side transmitted can have multiple, for example, with the figuration gain adjustment amount addition of this residential quarter of the CQI value of Serving cell and network side transmitted, with addition result as revised CQI value; Perhaps, the figuration gain adjustment amount of this residential quarter of the CQI value of this residential quarter and network side transmitted is multiplied each other, with multiplied result as revised CQI value.

The figuration gain adjustment amount that network side sends can be the preferred value that obtains by emulation or actual measurement, also can be the theoretical value by calculating.Network side sends the physical antenna number of Serving cell or can be between step 20 and step 22 opportunity of figuration gain adjustment amount, concrete, determine to unite to terminal the mode of the service cell set that sends data if adopt the first in the step 20, then can network side determines to unite the service cell set that sends data to terminal according to the time delay of the intensity of the pilot signal that receives and/or downlink synchronous signal after, send physical antenna number or the figuration gain adjustment amount of each Serving cell to terminal; Determine to unite to terminal the mode of the service cell set that sends data if adopt the second in the step 20, then can be after terminal send to network side with the information of the service cell set determined, network side sends to terminal with physical antenna number or the figuration gain adjustment amount of each Serving cell.

In the step 23, determine that according to revised each CQI value the concrete grammar of the comprehensive CQI value of service cell set can have following two kinds:

The first, if the Serving cell of determining in the step 21 is broadband CQI value to the CQI value of terminal, then according to the comprehensive CQI value of the revised CQI value of each broadband CQI value being determined service cell set, concrete definite method can have multiple, for example, with revised each CQI value addition, addition result is defined as the comprehensive CQI value of Serving cell collection; Perhaps, calculate the mean value of revised each CQI value, result of calculation is defined as the comprehensive CQI value of service cell set.

The second if the Serving cell of determining in the step 21 comprises a plurality of subband CQI values to the CQI value of terminal, then divides into groups revised each CQI value, and the frequency band range of the CQI value correspondence that comprises in every group is identical; And for each grouping: according to the comprehensive CQI value of the definite service cell set of all CQI values in this grouping.Concrete definite method can have multiple, for example, with all the CQI value additions in this grouping, addition result is defined as a comprehensive CQI value of service cell set; Perhaps, calculate the mean value of all CQI values in this grouping, result of calculation is defined as a comprehensive CQI value of service cell set.

After network receives the CQI information of terminal feedback, can carry out according to this CQI information the operations such as scheduling of resource, resource distribution, MCS selection, to improve the availability of frequency spectrum.

Referring to Fig. 3, the embodiment of the invention also provides a kind of reponse system of channel quality indication (CQI) information, and this system comprises:

Base station 30 is used for to physical antenna number or the figuration gain adjustment amount of terminal transmission Serving cell;

Terminal 31 is used for knowing the service cell set that sends data to self uniting;

For each residential quarter in the described service cell set, determine that this residential quarter is to the CQI value of described terminal; Physical antenna number or the figuration gain adjustment amount of this residential quarter of sending according to described base station are revised the CQI value of this residential quarter;

Determine the comprehensive CQI value of described service cell set according to revised each CQI value, and should comprehensive CQI value send to described base station.

Described terminal 31 is used for:

The physical antenna number of this residential quarter of sending according to described base station is determined the figuration gain adjustment amount of this residential quarter; According to the figuration gain adjustment amount of determining the CQI value of this residential quarter is revised, for example, with CQI value and the addition of described figuration gain adjustment amount of this residential quarter, with addition result as revised CQI value; Perhaps;

Corresponding relation according to the CQI value that sets in advance, physical antenna number and CQI value adjustment amount, determine the CQI value adjustment amount corresponding with the physical antenna number of this residential quarter of the CQI value of this residential quarter, network side transmitted, adjust the CQI value of this residential quarter according to described CQI value adjustment amount, will adjust the result as revised CQI value.

Described terminal 31 is used for:

With the figuration gain adjustment amount addition of this residential quarter of the CQI value of this residential quarter and network side transmitted, with addition result as revised CQI value.

Referring to Fig. 4, the embodiment of the invention also provides a kind of terminal, can be applied in the reponse system of channel quality indication (CQI) information, and this terminal comprises:

Serving cell determining unit 40 is used for knowing to this terminal and unites the service cell set that sends data;

CQI amending unit 41 is used for each residential quarter for described service cell set, determines that this residential quarter is to the CQI value of this terminal; Physical antenna number or figuration gain adjustment amount according to this residential quarter of network side transmitted are revised the CQI value of this residential quarter;

Comprehensive CQI determining unit 42 is used for according to revised each the CQI value of described CQI amending unit, determines the comprehensive CQI value of described service cell set;

CQI transmitting element 43 is used for described comprehensive CQI value is sent to network side.

Described CQI amending unit 41 comprises:

The first amending unit 410 is used for determining according to the physical antenna number of this residential quarter of network side transmitted the figuration gain adjustment amount of this residential quarter; According to the figuration gain adjustment amount of determining the CQI value of this residential quarter is revised, for example, with CQI value and the addition of described figuration gain adjustment amount of this residential quarter, with addition result as revised CQI value;

The second amending unit 411, be used for the corresponding relation according to the CQI value, physical antenna number and the CQI value adjustment amount that set in advance, determine the CQI value adjustment amount corresponding with the physical antenna number of this residential quarter of the CQI value of this residential quarter, network side transmitted, adjust the CQI value of this residential quarter according to described CQI value adjustment amount, will adjust the result as revised CQI value.

The 3rd amending unit 412 is used for the figuration gain adjustment amount addition with this residential quarter of the CQI value of this residential quarter and network side transmitted, with addition result as revised CQI value.

Described comprehensive CQI determining unit 42 comprises:

The first determining unit 420, when being used in this residential quarter that described CQI amending unit is determined CQI value to described terminal for broadband CQI value, the revised CQI value of each broadband CQI value is determined the comprehensive CQI value of described service cell set according to described CQI amending unit, for example, with revised each the CQI value addition of described CQI amending unit, addition result is defined as the comprehensive CQI value of described service cell set; Perhaps, calculate the mean value of revised each the CQI value of described CQI amending unit, result of calculation is defined as the comprehensive CQI value of described service cell set.

The second determining unit 421, when being used in this residential quarter that described CQI amending unit is determined comprising a plurality of subband CQI value to the CQI value of described terminal, with revised each CQI value grouping, the frequency band range of the CQI value correspondence that comprises in every group is identical, and for each grouping: according to the comprehensive CQI value of the definite described service cell set of all CQI values in this grouping, for example

With all the CQI value additions in this grouping, addition result is defined as a comprehensive CQI value of described service cell set; Perhaps, calculate the mean value of all CQI values in this grouping, result of calculation is defined as a comprehensive CQI value of described service cell set.

To sum up, beneficial effect of the present invention comprises:

In the scheme that the embodiment of the invention provides, by terminal for each residential quarter of uniting to self in the service cell set that sends data, determine this residential quarter to the CQI value of terminal, and according to physical antenna number or the figuration gain adjustment amount of this residential quarter of network side transmitted the CQI value of this residential quarter is revised; Then determine the comprehensive CQI value of service cell set according to revised each CQI value, and should comprehensive CQI value send to network side, so that UE can feed back the CQI information of the channel quality of reflection UE institute's home cell and other cooperation districts, and then so that network side can accurately for UE selects the MCS grade, improve systematic function.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (7)

1. the feedback method of a channel quality indication (CQI) information is characterized in that, the method comprises:
Terminal is known the service cell set that sends data to self uniting;
For each residential quarter in the described service cell set, determine this residential quarter to the channel quality indicator (CQI) value of described terminal, and according to physical antenna number or the figuration gain adjustment amount of this residential quarter of network side transmitted the CQI value of this residential quarter is revised;
Determine the comprehensive CQI value of described service cell set according to revised each CQI value, and should comprehensive CQI value send to network side;
The physical antenna number of described this residential quarter according to network side transmitted is revised the CQI value of this residential quarter and is comprised: the figuration gain adjustment amount of determining this residential quarter according to the physical antenna number of this residential quarter of network side transmitted; According to the figuration gain adjustment amount of determining the CQI value of this residential quarter is revised; Perhaps; Corresponding relation according to the CQI value that sets in advance, physical antenna number and CQI value adjustment amount, determine the CQI value adjustment amount corresponding with the physical antenna number of this residential quarter of the CQI value of this residential quarter, network side transmitted, adjust the CQI value of this residential quarter according to described CQI value adjustment amount, will adjust the result as revised CQI value.
2. the method for claim 1 is characterized in that, is broadband CQI value if the CQI value of described terminal is arrived in the residential quarter of determining, then described comprehensive CQI value according to the definite described service cell set of revised each CQI value comprises:
According to the comprehensive CQI value of the revised CQI value of each broadband CQI value being determined described service cell set.
3. the method for claim 1 is characterized in that, if this residential quarter of determining comprises a plurality of subband CQI values to the CQI value of described terminal, then described comprehensive CQI value according to the definite described service cell set of revised each CQI value comprises:
With revised each CQI value grouping, the frequency band range of the CQI value correspondence that comprises in every group is identical;
For each grouping, determine the comprehensive CQI value of described service cell set according to all the CQI values in this grouping.
4. the reponse system of a channel quality indication (CQI) information is characterized in that, this system comprises:
The base station is used for to physical antenna number or the figuration gain adjustment amount of terminal transmission Serving cell;
Terminal is used for knowing the service cell set that sends data to self uniting; For each residential quarter in the described service cell set, determine that this residential quarter is to the channel quality indicator (CQI) value of described terminal; Physical antenna number or the figuration gain adjustment amount of this residential quarter of sending according to described base station are revised the CQI value of this residential quarter;
Determine the comprehensive CQI value of described service cell set according to revised each CQI value, and should comprehensive CQI value send to described base station;
The physical antenna number of described this residential quarter of sending according to described base station is revised the CQI value of this residential quarter and comprised: the physical antenna number of this residential quarter of sending according to described base station is determined the figuration gain adjustment amount of this residential quarter; According to the figuration gain adjustment amount of determining the CQI value of this residential quarter is revised; Perhaps; Corresponding relation according to the CQI value that sets in advance, physical antenna number and CQI value adjustment amount, determine the CQI value adjustment amount corresponding with the physical antenna number of this residential quarter of the CQI value of this residential quarter, network side transmitted, adjust the CQI value of this residential quarter according to described CQI value adjustment amount, will adjust the result as revised CQI value.
5. a terminal is characterized in that, this terminal comprises:
The Serving cell determining unit is used for knowing to this terminal and unites the service cell set that sends data;
The CQI amending unit is used for each residential quarter for described service cell set, determines that this residential quarter is to the channel quality indicator (CQI) value of this terminal; Physical antenna number or figuration gain adjustment amount according to this residential quarter of network side transmitted are revised the CQI value of this residential quarter;
Comprehensive CQI determining unit is used for according to revised each the CQI value of described CQI amending unit, determines the comprehensive CQI value of described service cell set;
The CQI transmitting element is used for described comprehensive CQI value is sent to network side;
Described CQI amending unit comprises the first amending unit and the second amending unit, and described the first amending unit is used for determining according to the physical antenna number of this residential quarter of network side transmitted the figuration gain adjustment amount of this residential quarter; According to the figuration gain adjustment amount of determining the CQI value of this residential quarter is revised; Described the second amending unit, be used for the corresponding relation according to the CQI value, physical antenna number and the CQI value adjustment amount that set in advance, determine the CQI value adjustment amount corresponding with the physical antenna number of this residential quarter of the CQI value of this residential quarter, network side transmitted, adjust the CQI value of this residential quarter according to described CQI value adjustment amount, will adjust the result as revised CQI value.
6. terminal as claimed in claim 5 is characterized in that, described comprehensive CQI determining unit comprises:
The first determining unit is when being used in this residential quarter that described CQI amending unit is determined CQI value to described terminal for broadband CQI value, according to the comprehensive CQI value of described CQI amending unit to the definite described service cell set of the revised CQI value of each broadband CQI value.
7. terminal as claimed in claim 5 is characterized in that, described comprehensive CQI determining unit comprises:
The second determining unit when being used in this residential quarter that described CQI amending unit is determined comprising a plurality of subband CQI value to the CQI value of described terminal, is divided into groups revised each CQI value, and the frequency band range of the CQI value correspondence that comprises in every group is identical, and for each grouping:
Determine the comprehensive CQI value of described service cell set according to all the CQI values in this grouping.
CN 200910080451 2009-03-18 2009-03-18 Feedback method, system and device for channel quality indication information CN101841847B (en)

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