CN104079373B - Method and device for determining uplink channel state information - Google Patents

Abstract

The invention discloses a method and a device for determining uplink channel state information, and belongs to the technical field of wireless communication. The method comprises the following steps: the method comprises the steps that a base station configures part of sub-bandwidths in configuration bandwidths of a terminal in advance as sub-bandwidths for SRS transmission, wherein the configuration bandwidths comprise a plurality of sub-bandwidths with the widths of frequency hopping bandwidths; the base station receives the SRS sent by the terminal on the sub-bandwidth for SRS transmission; the base station determines uplink channel state information corresponding to each sub-bandwidth used for SRS transmission according to the SRS received on each sub-bandwidth used for SRS transmission; and the base station determines the uplink channel state information corresponding to the sub-bandwidth which is not used for SRS transmission in the configured bandwidth according to the uplink channel state information corresponding to the sub-bandwidths used for SRS transmission. The invention can improve the utilization rate of the uplink resources of the terminal.

Description

A method and device for determining uplink channel state information

technical field

The present invention relates to the technical field of wireless communication, in particular to a method and device for determining uplink channel state information.

Background technique

In the LTE-A (Long Term Evolution-Advanced, Advanced Long Term Evolution) system, the terminal will periodically send SRS (Sounding Reference Signal, listening reference signal) on the uplink to assist the base station to obtain uplink channel status information. The channel state information is adaptively modulated and coded, and an appropriate modulation and coding scheme is selected.

In the prior art, in a subframe, the SRS sent by the terminal occupies the last SC-FDMA (Single Carrier Frequency Division Multiple Access, single carrier frequency division multiple access) symbol of the second slot (time slot). The SRS transmission by the terminal can be divided into two modes: non-frequency hopping mode and frequency hopping mode. In the non-frequency hopping mode, in each subframe, the terminal performs full-bandwidth SRS transmission on its configured bandwidth (the uplink frequency resources allocated by the base station for the terminal). In the frequency hopping mode, the configured bandwidth can be divided into N sub-bandwidths according to the configured frequency hopping bandwidth (the frequency hopping bandwidth is one-Nth of the configured bandwidth width, N is a positive integer, which can be recorded as b _hop ), and each SRS Sending cycle (the time interval for the terminal to send SRS each time), SRS is sent on one of the sub-bandwidths. After N cycles are sent, SRS is sent once on each of the N sub-bandwidths. The N SRS sending cycles correspond to The total duration is one frequency hopping period. For example, if the frequency hopping bandwidth is 1/4 of the configured bandwidth, then the configured bandwidth is divided into 4 sub-bandwidths, and the frequencies from low to high can be the first sub-bandwidth, the second sub-bandwidth, the third sub-bandwidth, the fourth sub-bandwidth, and the period In one frequency hopping period, the first SRS transmission period can transmit SRS on the first sub-bandwidth, the second SRS transmission period can transmit SRS on the third sub-bandwidth, and the third SRS transmission period can transmit SRS on the third sub-bandwidth. The SRS may be sent on the second sub-bandwidth, and the SRS may be sent on the fourth sub-bandwidth in the fourth SRS sending period.

In the non-frequency hopping mode, after the base station receives the SRS on the configured bandwidth, it can calculate and determine the uplink channel state information corresponding to the configured bandwidth, such as transmission matrix, SINR (Signal-to-Interference and Noise Ratio, signal-to-interference and noise ratio) , path loss and other information. In the frequency hopping mode, after receiving the SRS on each sub-bandwidth, the base station can determine the uplink channel state information corresponding to each sub-bandwidth through calculation.

In the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art:

In the prior art, in the process of determining uplink channel state information, SRS transmission must be performed in each sub-bandwidth of the terminal configuration bandwidth, occupying a large amount of terminal uplink resources.

Contents of the invention

In order to solve the problems in the prior art, embodiments of the present invention provide a method and device for determining uplink channel state information, so as to improve the utilization rate of terminal uplink resources during the process of acquiring uplink channel state information. Described technical scheme is as follows:

On the one hand, a method for determining uplink channel state information is provided. The base station pre-configures part of the sub-bandwidth in the configured bandwidth of the terminal as the sub-bandwidth used for SRS transmission, wherein the configured bandwidth includes a plurality of widths as the frequency hopping bandwidth The sub-bandwidth, the method includes:

The base station receives, on the sub-bandwidth for SRS transmission, the SRS sent by the terminal on the sub-bandwidth for SRS transmission;

The base station determines the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission according to the SRS received on each sub-bandwidth used for SRS transmission;

The base station determines, according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, the uplink channel state information corresponding to the sub-bandwidth not used for SRS transmission in the configured bandwidth.

On the other hand, a method for determining uplink channel state information is provided. The terminal pre-configures part of the sub-bandwidths in the configured bandwidth of the terminal as sub-bandwidths for SRS transmission, wherein the configured bandwidth includes multiple widths of A sub-bandwidth of the frequency hopping bandwidth, the method comprising:

The terminal sends an SRS to the base station on the sub-bandwidth used for SRS transmission; so that the base station determines the sub-bands used for SRS transmission according to the SRS received on each sub-bandwidth used for SRS transmission. The uplink channel state information corresponding to the bandwidth, and according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, determine the uplink channel state information corresponding to the sub-bandwidth not used for SRS transmission in the configured bandwidth.

In another aspect, a base station is provided, and the base station includes:

The configuration module is used to pre-configure part of the sub-bandwidths in the configuration bandwidth of the terminal as sub-bandwidths for SRS transmission, wherein the configuration bandwidth includes a plurality of sub-bandwidths whose width is the frequency hopping bandwidth;

A receiving module, configured to receive, on the sub-bandwidth for SRS transmission, the SRS sent by the terminal on the sub-bandwidth for SRS transmission;

A determining module, configured to determine uplink channel state information corresponding to each sub-bandwidth used for SRS transmission according to the SRS received on each sub-bandwidth used for SRS transmission; according to each sub-bandwidth used for SRS transmission The corresponding uplink channel state information determines the uplink channel state information corresponding to the sub-bandwidth not used for SRS transmission in the configured bandwidth.

In another aspect, a terminal is provided, and the terminal includes:

A configuration module, configured to pre-configure part of the sub-bandwidths in the configuration bandwidth of the terminal as sub-bandwidths for SRS transmission, wherein the configuration bandwidth includes a plurality of sub-bandwidths whose width is a frequency hopping bandwidth;

A sending module, configured to send an SRS to a base station on the sub-bandwidth used for SRS transmission; to enable the base station to determine the SRS used for SRS transmission according to the SRS received on each sub-bandwidth used for SRS transmission The uplink channel state information corresponding to each sub-bandwidth, and according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, determine the uplink channel state information corresponding to the sub-bandwidths not used for SRS transmission in the configured bandwidth.

The beneficial effects brought by the technical solution provided by the embodiments of the present invention are:

In the embodiment of the present invention, the base station pre-configures part of the sub-bandwidth in the configured bandwidth of the terminal as the sub-bandwidth for SRS transmission, and the base station transmits on the sub-bandwidth for SRS transmission, and the receiving terminal sends According to the received SRS, the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission is determined, and then according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, it is determined that the configured bandwidth is not used for SRS The uplink channel state information corresponding to the transmitted sub-bandwidth, in this way, the SRS can be sent only on part of the sub-bandwidth in the configured bandwidth of the terminal, thereby improving the utilization rate of uplink resources of the terminal.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a flowchart of a method for determining uplink channel state information provided by an embodiment of the present invention;

FIG. 2 is a flowchart of a method for determining uplink channel state information provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of time-frequency resources used for SRS transmission provided by an embodiment of the present invention;

FIG. 4 is a schematic diagram of time-frequency resources used for SRS transmission provided by an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of an apparatus for determining uplink channel state information provided by an embodiment of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Embodiment one

An embodiment of the present invention provides a method for determining uplink channel state information. In the method, the base station pre-configures part of the sub-bandwidth in the configured bandwidth of the terminal as the sub-bandwidth used for SRS transmission, wherein the configured bandwidth includes multiple widths of The sub-bandwidth of the frequency hopping bandwidth, the processing flow of the base station side of the method can be as shown in Figure 1, including the following steps:

Step 101, the base station receives the SRS sent by the terminal on the sub-bandwidth used for SRS transmission on the sub-bandwidth used for SRS transmission;

Step 102, the base station determines uplink channel state information corresponding to each sub-bandwidth used for SRS transmission according to the SRS received on each sub-bandwidth used for SRS transmission;

Step 103, the base station determines uplink channel state information corresponding to sub-bandwidths not used for SRS transmission in the configured bandwidth according to uplink channel state information corresponding to each sub-bandwidth used for SRS transmission.

In this method, the terminal pre-configures part of the sub-bandwidths in the configured bandwidth of the terminal as sub-bandwidths for SRS transmission, wherein the configured bandwidth includes a plurality of sub-bandwidths whose width is the frequency hopping bandwidth, and the processing on the terminal side of the method may include : The terminal sends an SRS to the base station on the sub-bandwidth used for SRS transmission; so that the base station determines the uplink channel corresponding to each sub-bandwidth used for SRS transmission according to the SRS received on each sub-bandwidth used for SRS transmission State information, and according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, determine the uplink channel state information corresponding to the sub-bandwidth not used for SRS transmission in the configured bandwidth.

In the embodiment of the present invention, the base station pre-configures part of the sub-bandwidth in the configured bandwidth of the terminal as the sub-bandwidth for SRS transmission, and the base station transmits on the sub-bandwidth for SRS transmission, and the receiving terminal sends According to the received SRS, the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission is determined, and then according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, it is determined that the configured bandwidth is not used for SRS The uplink channel state information corresponding to the transmitted sub-bandwidth, in this way, the SRS can be sent only on part of the sub-bandwidth in the configured bandwidth of the terminal, thereby improving the utilization rate of uplink resources of the terminal.

Embodiment two

An embodiment of the present invention provides a method for determining uplink channel state information. In the method, the base station and the terminal may pre-configure part of the sub-bandwidth in the configured bandwidth of the terminal as the sub-bandwidth for SRS transmission.

Wherein, the configured bandwidth includes multiple sub-bandwidths whose width is the frequency hopping bandwidth. The frequency hopping bandwidth can be preset, and the frequency hopping bandwidth is one-Nth of the configured bandwidth width (N is a positive integer), that is, the configured bandwidth is an integer multiple of the frequency hopping bandwidth. In this way, the configured bandwidth can include N The sub-bandwidth of the hopping bandwidth. Some sub-bandwidths can be selected from all sub-bandwidths of the configured bandwidth as the sub-bandwidths used for SRS transmission, that is, there can be one or more sub-bandwidths used for SRS transmission in the configured bandwidth, and the individual sub-bandwidths used for SRS transmission The number is less than the total number of sub-bandwidths in the configured bandwidth.

Specifically, part of the sub-bandwidths in the configured bandwidth of the terminal may be configured at the base station as sub-bandwidths for SRS transmission, and then the base station sends corresponding configuration information to the terminal. Alternatively, part of the sub-bandwidth in the configured bandwidth of the terminal may be configured in the base station and the terminal as the sub-bandwidth for SRS transmission, that is, the corresponding configuration information may be directly written into the terminal in other ways.

In the embodiment of the present invention, there may be many different schemes for determining the sub-bandwidth used for SRS transmission in each sub-bandwidth of the bandwidth configured by the terminal. For example, a certain number of sub-bandwidths can be randomly selected from all sub-bandwidths of the configured bandwidth as sub-bandwidths for SRS transmission, or a certain number of sub-bandwidths can be selected at intervals among all sub-bandwidths of the configured bandwidth as used for SRS transmission In addition, one sub-bandwidth may be selected from all sub-bandwidths of the configured bandwidth as the sub-bandwidth used for SRS transmission. Several preferred options are given below:

Solution 1, the sub-bandwidth used for SRS transmission is specifically a plurality of sub-bandwidths obtained by selecting one sub-bandwidth at intervals of a preset number of sub-bandwidths among the sub-bandwidths of the configured bandwidth.

Preferably, the sub-bandwidth at the upper boundary or lower boundary of the configured bandwidth can be selected starting from. Preferably, the preset number may be n-1 (n is any integer divisible by N, and N is the total number of sub-bandwidths in the configured bandwidth).

Example 1, the configured bandwidth of the terminal includes a total of 4 sub-bandwidths. The frequencies can be the first sub-bandwidth, the second sub-bandwidth, the third sub-bandwidth, and the fourth sub-bandwidth from low to high. You can set the first sub-bandwidth and the third sub-bandwidth. Bandwidth is a sub-bandwidth used for SRS transmission.

Example 2, the configured bandwidth of the terminal includes a total of 8 sub-bandwidths, the frequencies can be the first sub-bandwidth, the second sub-bandwidth, the third sub-bandwidth... the eighth sub-bandwidth, you can set the first sub-bandwidth, the third sub-bandwidth The sub-bandwidth, fifth sub-bandwidth and seventh sub-bandwidth are sub-bandwidths for SRS transmission.

In solution two, the sub-bandwidth used for SRS transmission includes at least the sub-bandwidth at the upper boundary and the sub-bandwidth at the lower boundary of the configured bandwidth.

Example 3, the configured bandwidth of the terminal includes 4 sub-bandwidths in total, and the frequencies can be the first sub-bandwidth, the second sub-bandwidth, the third sub-bandwidth, and the fourth sub-bandwidth from low to high, and the first sub-bandwidth and the fourth sub-bandwidth can be set. Bandwidth is a sub-bandwidth used for SRS transmission.

Example 4, the configured bandwidth of the terminal includes a total of 8 sub-bandwidths, and the frequencies can be the first sub-bandwidth, the second sub-bandwidth, the third sub-bandwidth...the eighth sub-bandwidth, you can set the first sub-bandwidth and the eighth sub-bandwidth The sub-bandwidth is the sub-bandwidth used for SRS transmission.

In the embodiment of the present invention, in addition to configuring the above subbandwidth, the terminal may also preconfigure a subframe corresponding to each subbandwidth used for SRS transmission among the subframes in the frequency hopping period. The base station may also pre-configure a subframe corresponding to each subbandwidth used for SRS transmission in the subframes within the frequency hopping period. In the embodiment of the present invention, SRS transmission is performed according to a preset frequency hopping period, and within each frequency hopping period, SRS transmission may be performed once on each sub-bandwidth used for SRS transmission. Wherein, the subframe corresponding to the subbandwidth used for SRS transmission may be the subframe used for the SRS transmission of the subbandwidth, that is, the SRS transmission of the subbandwidth is performed in the subframe. When selecting the subframe corresponding to the subbandwidth used for SRS transmission in the frequency hopping period, it can be selected arbitrarily from the subframes in the frequency hopping period, and a corresponding selection rule can also be set.

On each sub-bandwidth used for SRS transmission, SRS can be sent according to a certain time interval, which is the frequency hopping period. In this way, on each sub-bandwidth used for SRS transmission, all according to frequency hopping The transmission of the SRS is performed periodically.

Specifically, subframes corresponding to each subbandwidth used for SRS transmission in the subframes within the frequency hopping period may be configured in the base station first, and then the base station sends corresponding configuration information to the terminal. Alternatively, subframes corresponding to each subbandwidth used for SRS transmission in the subframes within the frequency hopping period may also be configured in the base station and the terminal respectively, that is, corresponding configuration information may be directly written into the terminal in other ways.

Preferably, the above-mentioned preconfigured interval between subframes corresponding to the subbandwidth used for SRS transmission may be an integer multiple of the preset unit duration. The unit duration may be the SRS transmission period in the prior art.

When performing frequency hopping SRS transmission in the prior art, the frequency hopping period is N times the SRS transmission period (N is the total number of sub-bandwidths in the configured bandwidth), that is, there are N SRS transmission periods in the frequency hopping period. In the embodiment of the present invention, when configuring subframes corresponding to each subbandwidth used for SRS transmission in the subframes within the frequency hopping period, the SRS transmission period in the prior art can be used, that is, the SRS transmission period in the prior art can be used. of subframes.

For example, in Example 1 above, within a frequency hopping period, the first SRS transmission period can transmit SRS on the first sub-bandwidth, the second SRS transmission period can transmit SRS on the third sub-bandwidth, and the third SRS transmission period can transmit SRS on the third sub-bandwidth. The sending period and the fourth SRS sending period may not send the SRS. Alternatively, in one frequency hopping period, the first SRS transmission period may transmit SRS on the first sub-bandwidth, the third SRS transmission period may transmit SRS on the third sub-bandwidth, and the second SRS transmission period and In the fourth SRS sending period, no SRS may be sent. There are other situations, which are not listed one by one in this embodiment.

For example, in the above example 2, within a frequency hopping period, the first SRS transmission period can transmit SRS on the first sub-bandwidth, the second SRS transmission period can transmit SRS on the fifth sub-bandwidth, and the third SRS transmission period can transmit SRS on the fifth sub-bandwidth. The SRS sending period may send the SRS on the third sub-bandwidth, the fourth SRS sending period may send the SRS on the seventh sub-bandwidth, and the fourth to eighth SRS sending periods may not send the SRS. Alternatively, as shown in Figure 3, within a frequency hopping period, the first SRS transmission period may transmit SRS on the first sub-bandwidth, the third SRS transmission period may transmit SRS on the fifth sub-bandwidth, and the third SRS transmission period may transmit SRS on the fifth sub-bandwidth. Five SRS transmission cycles can send SRS on the third sub-bandwidth, the seventh SRS transmission cycle can send SRS on the seventh sub-bandwidth, and other SRS transmission cycles can not send SRS (the slashed part in the figure is the transmission of SRS Time-frequency resources, the vertical axis is frequency and the horizontal axis is time). There are other situations, which are not listed one by one in this embodiment.

For example, in the above example 3, within a frequency hopping period, the first SRS transmission period can transmit SRS on the first sub-bandwidth, the fourth SRS transmission period can transmit SRS on the fourth sub-bandwidth, and the second SRS transmission period can transmit SRS on the fourth sub-bandwidth. The SRS sending period and the third SRS sending period may not send the SRS. Alternatively, as shown in Figure 4, within a frequency hopping period, the first SRS transmission period can send SRS on the first sub-bandwidth, the third SRS transmission period can send SRS on the fourth sub-bandwidth, and the third SRS transmission period can send SRS on the fourth sub-bandwidth. The second SRS transmission cycle and the fourth SRS transmission cycle may not send SRS (the slashed part in the figure is the time-frequency resource for transmitting SRS, and the vertical axis is frequency and the horizontal axis is time). There are other situations, which are not listed one by one in this embodiment.

For another example, in the above example 4, within a frequency hopping period, the first SRS transmission period can transmit SRS on the first sub-bandwidth, the eighth SRS transmission period can transmit SRS on the eighth sub-bandwidth, and the second SRS transmission period can transmit SRS on the eighth sub-bandwidth. No SRS may be sent from the SRS sending period to the seventh SRS sending period. Alternatively, within a frequency hopping period, the first SRS transmission period may transmit SRS on the first sub-bandwidth, the fifth SRS transmission period may transmit SRS on the eighth sub-bandwidth, and other SRS transmission periods may not Send SRS. There are other situations, which are not listed one by one in this embodiment.

As shown in Figure 2, the processing flow of the method for determining the uplink channel state information provided by the embodiment of the present invention may include the following steps:

In step 201, the terminal sends an SRS to the base station on the configured sub-bandwidth for SRS transmission. Among the sub-bandwidths of the configured bandwidth, sub-bandwidths other than the sub-bandwidth used for SRS transmission are sub-bandwidths not used for SRS transmission.

Specifically, the terminal may send the SRS to the base station on the sub-band for SRS transmission corresponding to the sub-frame in each sub-frame corresponding to the sub-band for SRS transmission in each frequency hopping period. In the terminal and the base station, the corresponding relationship between each subbandwidth used for SRS transmission and subframes within the frequency hopping period can be established, and these subframes can be called subframes used for SRS transmission. When sending the SRS, when sending the SRS on a certain sub-bandwidth, the subframe corresponding to the sub-bandwidth is used.

Step 202, the base station receives the SRS sent by the terminal on the sub-bandwidth used for SRS transmission on the sub-bandwidth used for SRS transmission.

Specifically, in each subframe corresponding to the subbandwidth used for SRS transmission in each frequency hopping period, the base station receives the SRS sent by the terminal on the subbandwidth used for SRS transmission corresponding to the subframe.

In step 203, the base station determines uplink channel state information corresponding to each sub-bandwidth used for SRS transmission according to the received SRS on each sub-bandwidth used for SRS transmission. There are many methods for calculating the sub-bandwidth uplink channel state information according to the SRS, which is not limited in the embodiment of the present invention.

Step 204, the base station determines uplink channel state information corresponding to sub-bandwidths not used for SRS transmission in the configured bandwidth according to uplink channel state information corresponding to each sub-bandwidth used for SRS transmission.

There are many methods for determining the uplink channel state information corresponding to other sub-bandwidths in the configured bandwidth according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission. For example, the number of sub-bandwidths used for SRS transmission is 1, and the uplink channel state information corresponding to this sub-bandwidth may be directly used as the uplink channel state information corresponding to other sub-bandwidths. For another example, the average value of the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission may be determined first, and then the average value may be used as the uplink channel state information corresponding to other sub-bandwidths.

Preferably, the base station can determine the uplink channel state information corresponding to the sub-bandwidths not used for SRS transmission in the configured bandwidth according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, and based on an interpolation method or a curve fitting method. Among them, the interpolation method can be further divided into interpolation method and external interpolation method. In the case of the above-mentioned example 3 and example 4, the interpolation method can be used, and in the case of the above-mentioned example 1 and example 2, the combination of the external interpolation method and the interpolation method can be used. Preferably, a linear interpolation method can be used for calculation. Some examples of calculating uplink channel state information based on an interpolation method or a curve fitting method are given below, and the calculation of SINR (Signal to Interference plus Noise Ratio, signal to interference plus noise ratio) is taken as an example.

For example, in the case of Example 1 above, if it is calculated in step 203 that the SINR corresponding to the first sub-bandwidth is 5dB, and the SINR corresponding to the third sub-bandwidth is 7dB, then the second sub-bandwidth can be calculated according to the interpolation method or curve fitting method. The SINR corresponding to the bandwidth is 6dB, and the SINR corresponding to the fourth sub-bandwidth is 8dB.

For example, in the case of Example 2 above, if the SINRs corresponding to the first sub-bandwidth, the third sub-bandwidth, the fifth sub-bandwidth and the seventh sub-bandwidth are all 3dB in step 203, then according to the interpolation method or the curve fitting method It can be calculated that the SINRs corresponding to the second sub-bandwidth, the fourth sub-bandwidth, the sixth sub-bandwidth and the eighth sub-bandwidth are all 3dB.

For example, in the case of Example 3 above, if it is calculated in step 203 that the SINR corresponding to the first sub-bandwidth is 5dB, and the SINR corresponding to the fourth sub-bandwidth is 8dB, then the second sub-bandwidth can be calculated according to the interpolation method or curve fitting method. The SINR corresponding to the bandwidth is 6dB, and the SINR corresponding to the third sub-bandwidth is 7dB.

For example, in the case of Example 4 above, if it is calculated in step 203 that the SINR corresponding to the first sub-bandwidth is 3dB, and the SINR corresponding to the eighth sub-bandwidth is 3dB, then the second sub-bandwidth can be calculated according to the interpolation method or curve fitting method. The SINR corresponding to the bandwidth to the seventh sub-bandwidth is 3dB.

In the embodiment of the present invention, the base station pre-configures part of the sub-bandwidth in the configured bandwidth of the terminal as the sub-bandwidth for SRS transmission, and the base station transmits on the sub-bandwidth for SRS transmission, and the receiving terminal sends According to the received SRS, the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission is determined, and then according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, it is determined that the configured bandwidth is not used for SRS The uplink channel state information corresponding to the transmitted sub-bandwidth, in this way, the SRS can be sent only on part of the sub-bandwidth in the configured bandwidth of the terminal, thereby improving the utilization rate of uplink resources of the terminal.

Embodiment three

Based on the same technical concept, the embodiment of the present invention also provides a base station, as shown in Figure 5, the base station includes:

The configuration module 510 is configured to pre-configure part of the sub-bandwidths in the configuration bandwidth of the terminal as sub-bandwidths for SRS transmission, wherein the configuration bandwidth includes a plurality of sub-bandwidths whose width is the frequency hopping bandwidth;

The receiving module 520 is configured to receive, on the sub-bandwidth for SRS transmission, the SRS sent by the terminal on the sub-bandwidth for SRS transmission;

The determination module 530 is configured to determine the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission according to the SRS received on each sub-bandwidth used for SRS transmission; The uplink channel state information corresponding to the bandwidth determines the uplink channel state information corresponding to the sub-bandwidth not used for SRS transmission in the configured bandwidth.

Preferably, the configuration module 510 is further configured to: pre-configure subframes corresponding to each subbandwidth used for SRS transmission in the subframes within the frequency hopping period;

The receiving module 520 is specifically configured to: in each subframe corresponding to the subbandwidth used for SRS transmission in each frequency hopping period, receive the bandwidth used for SRS transmission corresponding to the terminal in the subframe SRS sent on the sub-bandwidth.

Preferably, the preconfigured duration of the interval between subframes is an integer multiple of a preset unit duration.

Preferably, the sub-bandwidth used for SRS transmission is specifically a plurality of sub-bandwidths obtained by selecting one sub-bandwidth at intervals of a preset number of sub-bandwidths among the sub-bandwidths of the configured bandwidth.

Preferably, the sub-bandwidth used for SRS transmission includes at least the sub-bandwidth at the upper boundary and the sub-bandwidth at the lower boundary of the configured bandwidth.

Preferably, the determination module 530 is specifically used for:

According to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, and based on an interpolation method or a curve fitting method, determine uplink channel state information corresponding to a sub-bandwidth not used for SRS transmission in the configured bandwidth.

Based on the same technical concept, the embodiment of the present invention also provides a terminal, the terminal includes:

A configuration module, configured to pre-configure part of the sub-bandwidths in the configuration bandwidth of the terminal as sub-bandwidths for SRS transmission, wherein the configuration bandwidth includes a plurality of sub-bandwidths whose width is a frequency hopping bandwidth;

A sending module, configured to send an SRS to a base station on the sub-bandwidth used for SRS transmission; to enable the base station to determine the SRS used for SRS transmission according to the SRS received on each sub-bandwidth used for SRS transmission The uplink channel state information corresponding to each sub-bandwidth, and according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, determine the uplink channel state information corresponding to the sub-bandwidths not used for SRS transmission in the configured bandwidth.

Preferably, the configuration module is further configured to: pre-configure subframes corresponding to each subbandwidth used for SRS transmission in the subframes within the frequency hopping period;

The sending module is specifically configured to: the terminal, in each subframe corresponding to the subbandwidth used for SRS transmission in each frequency hopping period, on the subbandwidth used for SRS transmission corresponding to the subframe Send SRS to the base station.

Preferably, the preconfigured duration of the interval between subframes is an integer multiple of a preset unit duration.

Preferably, the sub-bandwidth used for SRS transmission is specifically a plurality of sub-bandwidths obtained by selecting one sub-bandwidth at intervals of a preset number of sub-bandwidths among the sub-bandwidths of the configured bandwidth.

Preferably, the sub-bandwidth used for SRS transmission includes at least the sub-bandwidth at the upper boundary and the sub-bandwidth at the lower boundary of the configured bandwidth.

In the embodiment of the present invention, the base station pre-configures part of the sub-bandwidth in the configured bandwidth of the terminal as the sub-bandwidth for SRS transmission, and the base station transmits on the sub-bandwidth for SRS transmission, and the receiving terminal sends According to the received SRS, the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission is determined, and then according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, it is determined that the configured bandwidth is not used for SRS The uplink channel state information corresponding to the transmitted sub-bandwidth, in this way, the SRS can be sent only on part of the sub-bandwidth in the configured bandwidth of the terminal, thereby improving the utilization rate of uplink resources of the terminal.

It should be noted that: when the device for determining the uplink channel state information provided by the above-mentioned embodiment determines the uplink channel state information, it only uses the division of the above-mentioned functional modules as an example for illustration. In practical applications, the above-mentioned functions can be assigned by Completion of different functional modules means that the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the device for determining uplink channel state information provided by the above embodiment and the method embodiment for determining uplink channel state information belong to the same idea, and its specific implementation process is detailed in the method embodiment, and will not be repeated here.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

Those of ordinary skill in the art can understand that all or part of the steps for implementing the above embodiments can be completed by hardware, and can also be completed by instructing related hardware through a program. The program can be stored in a computer-readable storage medium. The above-mentioned The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, and the like.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (22)

1. A method for determining uplink channel state information, characterized in that the base station pre-configures part of the sub-bandwidth in the configuration bandwidth of the terminal as a sub-bandwidth for SRS transmission, wherein the configuration bandwidth includes a plurality of widths for frequency hopping A sub-bandwidth of the bandwidth, the method comprising: The base station receives, on the sub-bandwidth for SRS transmission, the SRS sent by the terminal on the sub-bandwidth for SRS transmission; The base station determines the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission according to the SRS received on each sub-bandwidth used for SRS transmission; The base station determines, according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, the uplink channel state information corresponding to the sub-bandwidth not used for SRS transmission in the configured bandwidth. 2. The method according to claim 1, further comprising: the base station preconfiguring subframes corresponding to each subbandwidth used for SRS transmission in the subframes within the frequency hopping period; The base station receives the SRS sent by the terminal on the sub-bandwidth for SRS transmission on the sub-bandwidth for SRS transmission, specifically: the base station communicates with the In each subframe corresponding to the subbandwidth used for SRS transmission, receiving the SRS sent by the terminal on the subbandwidth used for SRS transmission corresponding to the subframe. 3. The method according to claim 2, wherein the preconfigured duration of the interval between subframes is an integer multiple of a preset unit duration. 4. The method according to claim 1, wherein the sub-bandwidth used for SRS transmission is specifically to select a sub-bandwidth for every preset number of sub-bandwidths among the sub-bandwidths of the configuration bandwidth. The obtained multiple sub-bandwidths. 5. The method according to claim 1, wherein the sub-bandwidth used for SRS transmission includes at least a sub-bandwidth at an upper boundary and a sub-bandwidth at a lower boundary of the configured bandwidth. 6. The method according to claim 1, wherein the base station determines, according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, the sub-bandwidth corresponding to the configured bandwidth that is not used for SRS transmission The uplink channel state information of , specifically: The base station determines uplink channel state information corresponding to sub-bandwidths not used for SRS transmission in the configured bandwidth according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, and based on an interpolation method or a curve fitting method. 7. A method for determining uplink channel state information, characterized in that the terminal pre-configures part of the sub-bandwidths in the configuration bandwidth of the terminal as sub-bandwidths for SRS transmission, wherein the configuration bandwidth includes multiple widths of A sub-bandwidth of the frequency hopping bandwidth, the method comprising: The terminal sends an SRS to the base station on the sub-bandwidth used for SRS transmission; so that the base station determines the sub-bands used for SRS transmission according to the SRS received on each sub-bandwidth used for SRS transmission. The uplink channel state information corresponding to the bandwidth, and according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, determine the uplink channel state information corresponding to the sub-bandwidth not used for SRS transmission in the configured bandwidth. 8. The method according to claim 7, further comprising: the terminal pre-configuring a subframe corresponding to each subbandwidth used for SRS transmission in the subframes within the frequency hopping period; The terminal sends the SRS to the base station on the subbandwidth used for SRS transmission, specifically: the terminal transmits the SRS in each subframe corresponding to the subbandwidth used for SRS transmission in each frequency hopping period The SRS is sent to the base station on the subbandwidth used for SRS transmission corresponding to the above subframe. 9. The method according to claim 8, wherein the preconfigured duration of the interval between subframes is an integer multiple of a preset unit duration. 10. The method according to claim 7, wherein the sub-bandwidth used for SRS transmission is specifically to select a sub-bandwidth for every preset number of sub-bandwidths among the sub-bandwidths of the configuration bandwidth. The obtained multiple sub-bandwidths. 11. The method according to claim 7, wherein the sub-bandwidth used for SRS transmission includes at least a sub-bandwidth at an upper boundary and a sub-bandwidth at a lower boundary of the configured bandwidth. 12. A base station, characterized in that the base station comprises: The configuration module is used to pre-configure part of the sub-bandwidths in the configuration bandwidth of the terminal as sub-bandwidths for SRS transmission, wherein the configuration bandwidth includes a plurality of sub-bandwidths whose width is the frequency hopping bandwidth; A receiving module, configured to receive, on the sub-bandwidth for SRS transmission, the SRS sent by the terminal on the sub-bandwidth for SRS transmission; A determining module, configured to determine uplink channel state information corresponding to each sub-bandwidth used for SRS transmission according to the SRS received on each sub-bandwidth used for SRS transmission; according to each sub-bandwidth used for SRS transmission The corresponding uplink channel state information determines the uplink channel state information corresponding to the sub-bandwidth not used for SRS transmission in the configured bandwidth. 13. The base station according to claim 12, wherein the configuration module is further configured to: pre-configure subframes corresponding to each subbandwidth used for SRS transmission in the subframes within the frequency hopping period; The receiving module is specifically configured to: in each subframe corresponding to the subbandwidth used for SRS transmission in each frequency hopping period, receive the subframe used for SRS transmission corresponding to the terminal in the subframe SRS sent on bandwidth. 14. The base station according to claim 13, wherein the preconfigured duration of the interval between subframes is an integer multiple of a preset unit duration. 15. The base station according to claim 12, wherein the sub-bandwidth used for SRS transmission is specifically to select a sub-bandwidth for every preset number of sub-bandwidths among the sub-bandwidths of the configured bandwidth. The obtained multiple sub-bandwidths. 16. The base station according to claim 12, wherein the sub-bandwidth used for SRS transmission includes at least a sub-bandwidth at an upper boundary and a sub-bandwidth at a lower boundary of the configured bandwidth. 17. The base station according to claim 12, wherein the determining module is specifically configured to: According to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, and based on an interpolation method or a curve fitting method, determine uplink channel state information corresponding to a sub-bandwidth not used for SRS transmission in the configured bandwidth. 18. A terminal, characterized in that the terminal comprises: A configuration module, configured to pre-configure part of the sub-bandwidths in the configuration bandwidth of the terminal as sub-bandwidths for SRS transmission, wherein the configuration bandwidth includes a plurality of sub-bandwidths whose width is a frequency hopping bandwidth; A sending module, configured to send an SRS to a base station on the sub-bandwidth used for SRS transmission; to enable the base station to determine the SRS used for SRS transmission according to the SRS received on each sub-bandwidth used for SRS transmission The uplink channel state information corresponding to each sub-bandwidth, and according to the uplink channel state information corresponding to each sub-bandwidth used for SRS transmission, determine the uplink channel state information corresponding to the sub-bandwidths not used for SRS transmission in the configured bandwidth. 19. The terminal according to claim 18, wherein the configuration module is further configured to: pre-configure subframes corresponding to each subbandwidth used for SRS transmission in the subframes within the frequency hopping period; The sending module is specifically configured to: the terminal, in each subframe corresponding to the subbandwidth used for SRS transmission in each frequency hopping period, on the subbandwidth used for SRS transmission corresponding to the subframe Send SRS to the base station. 20. The terminal according to claim 19, wherein the preconfigured duration of the interval between subframes is an integer multiple of a preset unit duration. 21. The terminal according to claim 18, wherein the sub-bandwidth used for SRS transmission is specifically to select one sub-bandwidth for every preset number of sub-bandwidths among the sub-bandwidths of the configured bandwidth. The obtained multiple sub-bandwidths. 22. The terminal according to claim 18, wherein the sub-bandwidth used for SRS transmission includes at least a sub-bandwidth at an upper boundary and a sub-bandwidth at a lower boundary of the configured bandwidth.