CN111294185A - PMI feedback method, subband configuration method, apparatus, base station, user equipment, and medium - Google Patents
PMI feedback method, subband configuration method, apparatus, base station, user equipment, and medium Download PDFInfo
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Abstract
The application discloses a PMI feedback method, a subband configuration method, a PMI feedback device, a subband configuration device, a base station, user equipment and a medium, wherein the subband configuration method comprises the following steps: determining subband configuration information fed back by the PMI, wherein the subband configuration information indicates a continuous subband range used for PMI calculation; and sending the sub-band configuration information. The technical scheme for configuring the PMI feedback subband is used for supporting continuous subband configuration. In the technical evolution route of Rel-16 determined by 3GPP, the Type II PMI in Rel-15 is enhanced, and the Type II PMI in Rel-16 is suitable for a continuous subband calculation scene. As can be seen, the subband configuration technical solution of PMI feedback in the present application, as a technical solution for supporting continuous subband configuration, can be applied to the 5G communication technology at the next stage. In summary, the present application implements subband configuration of PMI feedback, and the above subband configuration scheme can be adapted to the 5G communication technology of the next stage.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a PMI feedback method, a subband configuration method, a PMI feedback device, a subband configuration device, a base station, a user equipment, and a medium.
Background
In order to meet the urgent demand of 5G communication technology in various industries, the development of 5G communication technology is fast, and the related technical standards are continuously advancing.
Rel-15, the first complete 5G New air interface (NR, New Radio) standard, has been formally frozen and released in 2018. After that, the technical evolution route of the standard Rel-16 for the next stage is quickly determined by 3GPP (3 rd Generation Partnership Project).
Although the technical evolution route of Rel-16 in the next stage is determined, the subband configuration mode of the corresponding Type II PMI feedback (PMI, Precoding Matrix Indicator) is still in an exploratory state. How to provide a subband configuration scheme corresponding to PMI feedback, which can be applied to the next-stage 5G communication technology, is a technical problem to be solved at present.
Disclosure of Invention
In view of this, the present invention provides a PMI feedback method, a subband configuration method, a device, a base station, a user equipment, and a medium, which can implement subband configuration of PMI feedback, and the subband configuration scheme can be adapted to the 5G communication technology in the next stage. The specific scheme is as follows:
in a first aspect, the present application discloses a subband configuration method for PMI feedback, including:
determining subband configuration information fed back by the PMI, wherein the subband configuration information indicates a continuous subband range used for PMI calculation;
and sending the sub-band configuration information.
Optionally, before determining the subband configuration information fed back by the PMI, the method further includes:
configuring a PMI format indicator to subband feedback, the PMI format indicator indicating whether a feedback type is subband feedback or wideband feedback.
Optionally, the PMI format indicator is a PMI-format indicator parameter in Rel-15.
Optionally, the subband feedback is adopted as default by presetting with the user equipment.
Optionally, the pmi-FormatIndicator parameter in Rel-15 is deleted.
Optionally, the subband configuring method further includes: and determining a feedback sub-band indication parameter for CQI calculation and sending the feedback sub-band indication parameter, wherein the feedback sub-band indication parameter for CQI calculation indicates a continuous sub-band range or a non-continuous sub-band range for CQI calculation.
Optionally, determining the subband configuration information fed back by the PMI includes:
and carrying the sub-band configuration information on a feedback sub-band indication parameter of CQI calculation, wherein the starting sub-band of the continuous sub-band range is the first sub-band of the CQI calculation, and the ending sub-band of the continuous sub-band range is the last sub-band of the CQI calculation.
Optionally, the feedback sub-band indication parameter of the CQI calculation follows the csi-reporting band parameter in Rel-15.
Optionally, determining the subband configuration information fed back by the PMI includes:
carrying the subband configuration information in a first new increasing subband indicating parameter, wherein the first new increasing subband indicating parameter indicates a starting subband position and an ending subband position of the continuous subband range.
Optionally, the first new increased sub-band indication parameter is a new increased parameter based on Rel-15.
Optionally, determining the subband configuration information fed back by the PMI includes:
and carrying the subband configuration information on a second newly added subband indicating parameter, wherein the second newly added subband indicating parameter indicates the initial subband position and the continuous subband quantity of the continuous subband range.
Optionally, the second newly added subband indicating parameter is a parameter newly added on the basis of Rel-15.
In a second aspect, the present application discloses a subband configuration apparatus for PMI feedback, including:
the configuration information determining module is used for determining subband configuration information fed back by the PMI, and the subband configuration information indicates a continuous subband range used for PMI calculation;
and the sending module is used for sending the sub-band configuration information.
In a third aspect, the present application discloses a PMI feedback method, including:
receiving subband configuration information fed back by the PMI, wherein the subband configuration information indicates a continuous subband range used for PMI calculation;
and performing PMI calculation according to the subband configuration information, and feeding back the feedback parameters obtained by calculation.
Optionally, before receiving the subband configuration information fed back by the PMI, the method further includes:
receiving a PMI format indicator configured as subband feedback, the PMI format indicator indicating whether a feedback type is subband feedback or wideband feedback.
Optionally, the PMI format indicator is a PMI-format indicator parameter in Rel-15.
Optionally, the subband feedback is adopted as default by presetting with the base station.
Optionally, the pmi-FormatIndicator parameter in Rel-15 is deleted.
Optionally, the PMI feedback method further includes: receiving a feedback sub-band indication parameter for CQI calculation, the feedback sub-band indication parameter for CQI calculation indicating a continuous sub-band range or a non-continuous sub-band range for CQI calculation.
Optionally, the subband configuration information is carried in a feedback subband indication parameter for CQI calculation, where a starting subband of the continuous subband range is a first subband of CQI calculation, and a terminating subband of the continuous subband range is a last subband of CQI calculation.
Optionally, the feedback sub-band indication parameter of the CQI calculation follows the csi-reporting band parameter in Rel-15.
Optionally, the subband configuration information is carried in a first new increasing subband indicating parameter, where the first new increasing subband indicating parameter indicates a starting subband position and an ending subband position of the continuous subband range.
Optionally, the first new increased sub-band indication parameter is a new increased parameter based on Rel-15.
Optionally, the subband configuration information is carried in a second newly added subband indicating parameter, where the second newly added subband indicating parameter indicates an initial subband position and a number of consecutive subbands in the consecutive subband range.
Optionally, the second newly added subband indicating parameter is a parameter newly added on the basis of Rel-15.
In a fourth aspect, the present application discloses a PMI feedback apparatus, including:
the receiving module is used for receiving subband configuration information fed back by the PMI, and the subband configuration information indicates a continuous subband range used for PMI calculation;
and the PMI calculation module is used for executing PMI calculation according to the subband configuration information and feeding back the feedback parameters obtained by calculation.
In a fifth aspect, the present application discloses a base station, which includes a memory and a processor, where the memory stores computer instructions capable of running on the processor, and the processor executes the steps of the subband configuration method of PMI feedback when executing the computer instructions.
In a sixth aspect, the present application discloses a user equipment, comprising a memory and a processor, wherein the memory stores computer instructions capable of running on the processor, and the processor executes the steps of the PMI feedback method when executing the computer instructions.
In a seventh aspect, the present application discloses a computer readable storage medium for storing computer instructions which, when executed, perform the steps of the method.
Determining subband configuration information fed back by a PMI, wherein the subband configuration information indicates a continuous subband range used for PMI calculation; and sending the sub-band configuration information. As can be seen, in the technical solution of PMI feedback according to the present application, the determined subband configuration information fed back by the PMI is specifically configuration information that can indicate a continuous subband range used for PMI calculation. That is, the subband configuration technical solution for PMI feedback provided in the present application is a technical solution for supporting continuous subband configuration. Since the 3GPP determines the technical evolution route of Rel-16, the Type II PMI in Rel-15 is enhanced, wherein after theoretical analysis and simulation, in Rel-16, the channel amplitude and phase of continuous subbands are continuously changed, which means that the Type II PMI in Rel-16 is suitable for the scene of continuous subband calculation. Therefore, the technical scheme of subband configuration for PMI feedback in the present application, as a technical scheme for supporting continuous subband configuration, can be applied to the 5G communication technology of the next stage. In summary, the present application implements subband configuration for PMI feedback, and the above subband configuration scheme can be adapted to the 5G communication technology in the next stage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a subband configuration method for PMI feedback disclosed in the present application;
FIG. 2 is a schematic diagram of subband configuration signaling parameters in a conventional Rel-15;
fig. 3 is a flowchart of a specific PMI feedback subband arrangement method disclosed in the present application;
fig. 4 is a flowchart of a specific PMI feedback subband arrangement method disclosed in the present application;
fig. 5 is a flowchart of a specific PMI feedback subband arrangement method disclosed in the present application;
fig. 6 is a flowchart of a specific PMI feedback subband arrangement method disclosed in the present application;
fig. 7 is a flowchart of a specific PMI feedback subband arrangement method disclosed in the present application;
fig. 8 is a flowchart of a specific PMI feedback subband arrangement method disclosed in the present application;
fig. 9 is a flowchart of a PMI feedback method disclosed in the present application;
fig. 10 is a schematic structural diagram of a subband configuration apparatus for PMI feedback disclosed in the present application;
fig. 11 is a schematic structural diagram of a PMI feedback apparatus disclosed in the present application;
fig. 12 is a schematic diagram of a base station disclosed in the present application;
fig. 13 is a schematic diagram of a user equipment disclosed in the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The development of 5G communication technology is now rapid, and the related technical standards are continuously advancing. Rel-15, as the first complete 5G new air interface standard, is formally frozen and released in 2018, and the technical evolution route of Rel-16 in the next stage is quickly determined by 3 GPP. Although the technical evolution route of Rel-16 is determined, the subband configuration mode of the corresponding Type II PMI feedback is still in an exploration state. Therefore, the present application provides a subband configuration scheme for PMI feedback, which can support continuous subband configuration and can be applied to the 5G communication technology of the next stage.
Referring to fig. 1, an embodiment of the present invention discloses a subband configuration method for PMI feedback, including:
step S11: determining subband configuration information fed back by the PMI, wherein the subband configuration information indicates a continuous subband range used for PMI calculation.
It can be understood that the subband configuration method in this embodiment may be specifically used for the base station side.
In this embodiment, the subband configuration information is subband configuration information fed back by the PMI, and specifically may be subband configuration information fed back by the Type IIPMI. That is, the PMI feedback in the present embodiment may specifically be Type II PMI feedback.
In a specific implementation, the information carrier used for carrying the subband configuration information in this embodiment may be the information carrier in legacy Rel-15. That is, the present embodiment may continue to use the information carrier in Rel-15 to carry the subband configuration information in the 5G communication technology of the next stage. Wherein, the actual use of the information carrier in Rel-15 at least comprises: subband configuration information indicating a continuous subband range for PMI calculation can be carried.
It should be noted that, in the Rel-15 standard, the subband configuration for calculating and reporting the Type II PMI and CQI (i.e., Channel quality indicator) is configured by the base station, and corresponding signaling parameters are shown in fig. 2. As can be seen from the parameters shown in fig. 2, the base station can independently control the CQI and PMI to be wideband feedback or subband feedback. When both the CQI and the PMI are fed back by subbands, a subband for CQI and PMI calculation and reporting may be indicated by a parameter csi-reporting band (csi, i.e., channel state information), where the parameter csi-reporting band is specifically in a bitmap form, and bit 1 indicates that the corresponding subband needs to be measured and reported.
In another specific implementation, the information carrier used for carrying the subband configuration information in this embodiment may be an information carrier added on the basis of Rel-15. It is noted that the new information carrier may specifically be a carrier that is separate from all other information carriers in Rel-15, but may of course also be a sub-carrier that is embedded in an existing information carrier in Rel-15.
It should be further noted that after research and analysis on the technical evolution route of Rel-16 determined by 3GPP, it can be found that the PMI feedback in the 5G communication technology of the next stage only supports subband feedback. For this reason, it is understood that, before step S11, the present embodiment may further include: and determining the feedback type of PMI feedback as subband feedback.
In a specific embodiment, the determining the feedback type of PMI feedback as subband feedback may include: configuring a PMI format indicator to subband feedback, the PMI format indicator indicating whether a feedback type is subband feedback or wideband feedback. It can be understood that, in this embodiment, the PMI format indicator may be used to indicate different PMI feedback types by assigning different parameter values to the PMI format indicator. The parameter values may be specifically parameter values composed of letters and/or numbers.
The PMI format indicator may be a PMI-format indicator parameter in Rel-15. Correspondingly, the configuring the PMI format indicator as a subband feedback may specifically be: the pmi-FormatIndicator parameter is assigned to "subbandPMI".
In another specific embodiment, the determining the feedback type of PMI feedback as subband feedback may include: the subband feedback is adopted by default in advance with the User Equipment (UE). That is, in this embodiment, the base station may agree with the user equipment in advance for the feedback type of PMI feedback, so as to agree the PMI feedback type as subband feedback, and thus, when performing PMI feedback subsequently, feedback is performed in a subband feedback manner. Further, on the basis that the default PMI feedback type agreed by the base station and the user equipment is subband feedback, in order to make the 5G communication technology in the next stage compatible with more contents of Rel-15 as much as possible, the embodiment may further delete the PMI-format indicator parameter in Rel-15, so that the modified Rel-15 only supports the PMI feedback type of subband feedback, and is suitable for the 5G communication technology Rel-16 in the next stage.
Step S12: and sending the sub-band configuration information.
That is, in this embodiment, after determining the subband configuration information fed back by the PMI, the base station may send the subband configuration information. Specifically, the base station may send the subband configuration information to the user equipment, so that the user equipment performs corresponding PMI calculation according to the received subband configuration information, and thus the user equipment may obtain corresponding PMI feedback parameters; after obtaining the PMI feedback parameters, the user equipment can perform corresponding PMI feedback.
Further, as can be seen from analyzing the technical evolution route of Rel-16, the CQI feedback in the Type II feedback of Rel-16 can support subband feedback and support continuous or discontinuous subband configuration, and for this reason, the embodiment may further include: and determining a feedback sub-band indication parameter for CQI calculation and sending the feedback sub-band indication parameter, wherein the feedback sub-band indication parameter for CQI calculation indicates a continuous sub-band range or a non-continuous sub-band range for CQI calculation.
As can be seen from the above, in the technical solution of subband configuration fed back by PMI in this embodiment, the determined subband configuration information fed back by PMI is specifically configuration information that can indicate a continuous subband range used for PMI calculation. That is, the subband configuration technical solution for PMI feedback provided in the present application is a technical solution for supporting continuous subband configuration. Since the 3GPP determines the technical evolution route of Rel-16, the Type II PMI in Rel-15 is enhanced, wherein after theoretical analysis and simulation, in Rel-16, the channel amplitude and phase of continuous subbands are continuously changed, which means that the Type II PMI in Rel-16 is suitable for the scene of continuous subband calculation. As can be seen from this, the subband configuration technical solution of PMI feedback in this embodiment, as a technical solution for supporting continuous subband configuration, can be applied to the 5G communication technology in the next stage. In summary, the present embodiment implements subband configuration for PMI feedback, and the above subband configuration scheme can be adapted to the 5G communication technology of the next stage.
Referring to fig. 3, an embodiment of the present application discloses a specific PMI feedback subband configuring method, including:
step S21: and carrying the sub-band configuration information on a feedback sub-band indication parameter of CQI calculation, wherein the starting sub-band of the continuous sub-band range is the first sub-band of the CQI calculation, and the ending sub-band of the continuous sub-band range is the last sub-band of the CQI calculation.
That is, the present embodiment may specifically obtain the subband configuration information capable of indicating a continuous subband range used for PMI calculation by using CQI calculation. Specifically, in this embodiment, the first sub-band of the CQI calculation may be determined as a starting sub-band of the continuous sub-band range, and the last sub-band of the CQI calculation may be determined as an ending sub-band of the continuous sub-band range, and the continuous sub-band range may be determined based on the starting sub-band and the ending sub-band. As can be seen, the feedback subband indication parameter in this embodiment specifically includes the first subband of CQI calculation and the last subband of CQI calculation. Correspondingly, the subband configuration information includes a start subband and a stop subband of the continuous subband range.
In this embodiment, the feedback subband indication parameter calculated by the CQI may specifically follow the csi-reporting band parameter in Rel-15. It can be seen that in this embodiment, the information carrier used for carrying the subband configuration information specifically follows the information carrier in Rel-15.
Step S22: and sending the feedback sub-band indication parameter carrying the sub-band configuration information.
That is, in this embodiment, after the base station carries the subband configuration information with the feedback subband indicating parameter of CQI calculation, the feedback subband indicating parameter may be sent out, and specifically, may be sent to the user equipment, so that the user equipment obtains the subband configuration information based on the received feedback subband indicating parameter, where the subband configuration information includes a starting subband and a terminating subband indicating the continuous subband range, and then performs PMI calculation according to the subband configuration information.
As can be seen from the above, in this embodiment, a start subband and an end subband in the continuous subband range may be specifically determined through CQI calculation, and the continuous subband range may be determined through the start subband and the end subband.
Referring to fig. 4, an embodiment of the present application discloses a specific PMI feedback subband configuring method, including:
step S31: carrying the subband configuration information in a first new increasing subband indicating parameter, wherein the first new increasing subband indicating parameter indicates a starting subband position and an ending subband position of the continuous subband range.
That is, this embodiment may specifically create a new indication parameter, that is, create the first new additional sub-band indication parameter. In this embodiment, the first newly added subband indicating parameter may indicate a subband position in the continuous subband range, and specifically may indicate a starting subband position and an ending subband position of the continuous subband range. It will be appreciated that the continuous sub-band range may be determined by the starting and ending sub-band positions in the first new increasing sub-band indication parameter.
Wherein, the first new increasing sub-band indication parameter can be a parameter added on the basis of Rel-15. It can be seen that, in this embodiment, the information carrier for carrying the subband configuration information is specifically an information carrier added on the basis of Rel-15.
Step S32: and sending the first newly increased sub-band indication parameter.
That is, in this embodiment, after the base station carries the subband configuration information with the first newly added subband indicating parameter, the first newly added subband indicating parameter may be sent out, and specifically, may be sent to the user equipment, so that the user equipment obtains the subband configuration information based on the first newly added subband indicating parameter, where the subband configuration information includes a starting subband position and a terminating subband position indicating the continuous subband range, and then performs PMI calculation according to the subband configuration information.
As can be seen from the above, in this embodiment, the starting subband position and the ending subband position of the continuous subband range may be specifically indicated by the newly added indication parameter, and the continuous subband range may be determined by the starting subband position and the ending subband position.
Referring to fig. 5, an embodiment of the present application discloses a specific PMI feedback subband configuring method, including:
step S41: and carrying the subband configuration information on a second newly added subband indicating parameter, wherein the second newly added subband indicating parameter indicates the initial subband position and the continuous subband quantity of the continuous subband range.
That is, this embodiment may specifically create a new indication parameter, that is, create the second new increased sub-band indication parameter. The present embodiment may indicate the starting subband position and the number of consecutive subbands in the consecutive subband range through the second newly added subband indicating parameter. It can be understood that, by using the starting subband position and the number of consecutive subbands in the second newly added subband indication parameter, the consecutive subband range can be determined.
Wherein, the second new subband indicating parameter may be a parameter added on the basis of Rel-15. It can be seen that, in this embodiment, the information carrier for carrying the subband configuration information is specifically an information carrier added on the basis of Rel-15.
Step S42: and sending the second newly added sub-band indication parameter.
That is, in this embodiment, after the base station carries the subband configuration information with the second newly added subband indication parameter, the second newly added subband indication parameter may be sent out, and specifically, may be sent to the user equipment, so that the user equipment obtains the subband configuration information based on the second newly added subband indication parameter, where the subband configuration information includes an initial subband position indicating the continuous subband range and a continuous subband number, and then performs PMI calculation according to the subband configuration information.
As can be seen from the above, in this embodiment, the starting subband position and the number of consecutive subbands of the consecutive subband range may be specifically indicated by the newly added indication parameter, and the consecutive subband range may be determined by the starting subband position and the number of consecutive subbands.
Referring to fig. 6, an embodiment of the present application discloses a specific PMI feedback subband configuring method, including:
step S51: and carrying the sub-band configuration information on a third newly added sub-band indicating parameter, wherein the third newly added sub-band indicating parameter indicates the continuous sub-band number and the position of a termination sub-band in the continuous sub-band range.
That is, this embodiment may specifically create a new indication parameter, that is, create the third newly added subband indication parameter. The present embodiment may indicate the number of consecutive subbands and the position of the terminating subband in the consecutive subband range by the third newly added subband indicating parameter. It is to be understood that the continuous subband range may be determined by the number of continuous subbands and the position of the terminating subband in the third newly added subband indicating parameter.
Wherein, the third newly added subband indicating parameter may be a parameter added on the basis of Rel-15. It can be seen that, in this embodiment, the information carrier for carrying the subband configuration information is specifically an information carrier added on the basis of Rel-15.
Step S52: and sending the third newly added sub-band indication parameter.
That is, in this embodiment, after the base station carries the subband configuration information with the third newly added subband indicating parameter, the third newly added subband indicating parameter may be sent out, and specifically, may be sent to the user equipment, so that the user equipment obtains the subband configuration information based on the third newly added subband indicating parameter, where the subband configuration information includes the number of consecutive subbands indicating the consecutive subband range and the position of a terminating subband, and then performs PMI calculation according to the subband configuration information.
As can be seen from the above, in this embodiment, the number of continuous subbands and the position of the termination subband in the continuous subband range may be specifically indicated by the newly added indication parameter, and the continuous subband range may be determined by the number of continuous subbands and the position of the termination subband.
Referring to fig. 7, an embodiment of the present application discloses a specific PMI feedback subband configuring method, including:
step S61: and carrying the sub-band configuration information on a fourth newly added sub-band indication parameter, wherein the fourth newly added sub-band indication parameter indicates a starting sub-band position of the continuous sub-band range and a width of the continuous sub-band range.
That is, this embodiment may specifically create a new indication parameter, that is, create the fourth new additional subband indication parameter. This embodiment may indicate the starting sub-band position in the continuous sub-band range and the width of the continuous sub-band range by the fourth newly added sub-band indication parameter. It can be understood that, in this embodiment, the number of consecutive subbands can be determined by the width of the consecutive subband range in the fourth incremented subband indicating parameter, and then the consecutive subband range can be determined by combining the starting subband position in the fourth incremented subband indicating parameter.
Wherein, the fourth new subband indicating parameter may be a parameter added on the basis of Rel-15. It can be seen that, in this embodiment, the information carrier for carrying the subband configuration information is specifically an information carrier added on the basis of Rel-15.
Step S62: and sending the fourth newly added sub-band indication parameter.
That is, in this embodiment, after the base station carries the subband configuration information with the fourth newly added subband indicating parameter, the fourth newly added subband indicating parameter may be sent out, and specifically, may be sent to the user equipment, so that the user equipment obtains the subband configuration information based on the fourth newly added subband indicating parameter, where the subband configuration information includes a starting subband position indicating the continuous subband range and a width of the continuous subband range, and then performs PMI calculation according to the subband configuration information.
As can be seen from the above, in this embodiment, the starting subband position of the continuous subband range and the width of the continuous subband range may be specifically indicated by the newly added indication parameter, and the continuous subband range may be determined by the starting subband position and the width of the continuous subband range.
Referring to fig. 8, an embodiment of the present application discloses a specific PMI feedback subband configuring method, including:
step S71: and carrying the sub-band configuration information on a fifth newly added sub-band indicating parameter, wherein the fifth newly added sub-band indicating parameter indicates the width of a continuous sub-band range of the continuous sub-band range and the position of a terminated sub-band.
That is, this embodiment may specifically create a new indication parameter, that is, create the fifth new increased sub-band indication parameter. The present embodiment may indicate the width of a continuous sub-band range and the end sub-band position in the continuous sub-band range by the fifth newly added sub-band indication parameter. It is understood that the number of consecutive subbands can be determined by the width of the consecutive subband range in the fifth incremented subband indicating parameter, and then the consecutive subband range can be determined by combining the position of the terminating subband in the fifth incremented subband indicating parameter.
Wherein, the fifth new subband indicating parameter may be a parameter added on the basis of Rel-15. It can be seen that, in this embodiment, the information carrier for carrying the subband configuration information is specifically an information carrier added on the basis of Rel-15.
Step S72: and sending the fifth newly added sub-band indication parameter.
That is, in this embodiment, after the base station carries the subband configuration information with the fifth newly added subband indicating parameter, the fifth newly added subband indicating parameter may be sent out, and specifically, may be sent to the user equipment, so that the user equipment obtains the subband configuration information based on the fifth newly added subband indicating parameter, where the subband configuration information includes a width of a continuous subband range indicating the continuous subband range and a terminating subband position, and then performs PMI calculation according to the subband configuration information.
As can be seen from the above, in this embodiment, the width of the continuous sub-band range and the position of the termination sub-band may be specifically indicated by the newly added indication parameter, and the continuous sub-band range may be determined by the width of the continuous sub-band range and the position of the termination sub-band.
Correspondingly, as shown in fig. 9, an embodiment of the present application discloses a PMI feedback method, including:
step S81: receiving subband configuration information fed back by the PMI, wherein the subband configuration information indicates a continuous subband range used for PMI calculation.
It can be understood that the PMI feedback method in this embodiment may be specifically used for the user equipment side. That is, the ue may receive subband configuration information fed back by the PMI sent by the base station, where the subband configuration information indicates a continuous subband range used for PMI calculation. For how the base station determines the subband configuration information, reference may be made to corresponding contents disclosed in the foregoing embodiments, and details are not repeated here.
In this embodiment, the subband configuration information is subband configuration information fed back by the PMI, and specifically may be subband configuration information fed back by the Type IIPMI. That is, the PMI feedback in the present embodiment may specifically be Type II PMI feedback.
In a specific embodiment, before receiving the subband configuration information fed back by the PMI, the method further includes: receiving a PMI format indicator configured as subband feedback, the PMI format indicator indicating whether a feedback type is subband feedback or wideband feedback. The PMI format indicator may be a PMI-format indicator parameter in Rel-15.
In another embodiment, the ue may pre-agree with the base station to adopt subband feedback as a default. Further, on the basis that the default PMI feedback type agreed by the user equipment and the base station is subband feedback, in order to make the 5G communication technology in the next stage compatible with more contents of Rel-15 as much as possible, the embodiment may further delete the PMI-format indicator parameter in Rel-15, so that the modified Rel-15 only supports the PMI feedback type of subband feedback, and is suitable for the 5G communication technology Rel-16 in the next stage.
Step S82: and performing PMI calculation according to the subband configuration information, and feeding back the feedback parameters obtained by calculation.
That is, after receiving the subband configuration information, the ue in this embodiment may perform PMI calculation according to the subband configuration information, and feed back the corresponding PMI feedback parameter obtained by the above calculation.
Further, as can be seen from analyzing the technical evolution route of Rel-16, the CQI feedback in the Type II feedback of Rel-16 can support subband feedback and support continuous or discontinuous subband configuration, and for this reason, the embodiment may further include: receiving a feedback sub-band indication parameter for CQI calculation, the feedback sub-band indication parameter for CQI calculation indicating a continuous sub-band range or a non-continuous sub-band range for CQI calculation.
In a first specific implementation, the subband configuration information is carried in a feedback subband indication parameter for CQI calculation, where a starting subband of the continuous subband range is a first subband of CQI calculation, and a terminating subband of the continuous subband range is a last subband of CQI calculation. The feedback sub-band indication parameter calculated by the CQI can specifically follow the csi-reporting band parameter in Rel-15.
In a second specific embodiment, the subband configuration information is carried in a first new increasing subband indicating parameter, wherein the first new increasing subband indicating parameter indicates a starting subband position and a terminating subband position of the continuous subband range. The first new-added subband indication parameter may specifically be a parameter added on the basis of Rel-15.
In a third specific implementation, the subband configuration information is carried in a second newly added subband indicating parameter, where the second newly added subband indicating parameter indicates a starting subband position and a number of consecutive subbands in the consecutive subband range. The second newly added subband indicating parameter may specifically be a parameter newly added on the basis of Rel-15.
In a fourth specific implementation, the subband configuration information is carried in a third newly added subband indicating parameter, where the third newly added subband indicating parameter indicates the number of consecutive subbands in the consecutive subband range and a position of a terminating subband. The third newly added subband indication parameter may specifically be a parameter newly added on the basis of Rel-15.
In a fifth specific embodiment, the subband configuration information is carried in a fourth incremented subband indicating parameter, where the fourth incremented subband indicating parameter indicates a starting subband position of the continuous subband range and a width of the continuous subband range. The fourth newly added subband indicating parameter may specifically be a parameter newly added on the basis of Rel-15.
In a sixth specific implementation, the subband configuration information is carried in a fifth added subband indicating parameter, where the fifth added subband indicating parameter indicates a width of a continuous subband range of the continuous subband range and a position of a terminating subband. The fifth newly added subband indicating parameter may specifically be a parameter newly added on the basis of Rel-15.
Further, referring to fig. 10, an embodiment of the present application further discloses a subband configuration apparatus for PMI feedback, including:
a configuration information determining module 11, configured to determine subband configuration information fed back by the PMI, where the subband configuration information indicates a continuous subband range used for PMI calculation;
and a sending module 12, configured to send the subband configuration information.
It is to be understood that the subband configuring apparatus in this embodiment may be specifically located at the base station side.
In this embodiment, the subband configuration information is subband configuration information fed back by the PMI, and specifically may be subband configuration information fed back by the Type IIPMI. That is, the PMI feedback in the present embodiment may specifically be Type II PMI feedback.
It should be further noted that after research and analysis on the technical evolution route of Rel-16 determined by 3GPP, it can be found that the PMI feedback in the 5G communication technology of the next stage only supports subband feedback. For this reason, it can be understood that the subband configuring apparatus fed back by PMI in this embodiment may further include:
and the feedback type determining module is used for determining the feedback type of the PMI feedback as the subband feedback.
In a specific embodiment, the feedback type determining module may include:
a configuration unit, configured to configure a PMI format indicator as subband feedback, where the PMI format indicator is used to indicate whether a feedback type is subband feedback or wideband feedback. It can be understood that, in this embodiment, the PMI format indicator may be used to indicate different PMI feedback types by assigning different parameter values to the PMI format indicator. The parameter values may be specifically parameter values composed of letters and/or numbers. The PMI format indicator may be a PMI-format indicator parameter in Rel-15. Correspondingly, the configuring the PMI format indicator as a subband feedback may specifically be: the pmi-FormatIndicator parameter is assigned to "subbandPMI".
In another specific embodiment, the feedback type determining module may include:
and the appointment unit is used for appointing the default adopted sub-band feedback with the user equipment in advance. That is, in this embodiment, the base station may agree with the user equipment in advance for the feedback type of PMI feedback, so as to agree the PMI feedback type as subband feedback, and thus, when performing PMI feedback subsequently, feedback is performed in a subband feedback manner. Further, on the basis that the default PMI feedback type agreed by the base station and the user equipment is subband feedback, in order to make the 5G communication technology in the next stage compatible with more contents of Rel-15 as much as possible, the embodiment may further delete the PMI-format indicator parameter in Rel-15, so that the modified Rel-15 only supports the PMI feedback type of subband feedback, and is suitable for the 5G communication technology Rel-16 in the next stage.
Further, as can be seen from analyzing the technical evolution route of Rel-16, the CQI feedback in the Type II feedback of Rel-16 can support subband feedback and support continuous or discontinuous subband configuration, for this reason, the sending module 12 in this embodiment may further be configured to: and determining a feedback sub-band indication parameter for CQI calculation and sending the feedback sub-band indication parameter, wherein the feedback sub-band indication parameter for CQI calculation indicates a continuous sub-band range or a non-continuous sub-band range for CQI calculation.
In a first specific embodiment, the configuration information determining module 11 is specifically configured to: and carrying the sub-band configuration information on a feedback sub-band indication parameter of CQI calculation, wherein the starting sub-band of the continuous sub-band range is the first sub-band of the CQI calculation, and the ending sub-band of the continuous sub-band range is the last sub-band of the CQI calculation.
In a second specific embodiment, the configuration information determining module 11 may be specifically configured to: carrying the subband configuration information in a first new increasing subband indicating parameter, wherein the first new increasing subband indicating parameter indicates a starting subband position and an ending subband position of the continuous subband range.
In a third specific embodiment, the configuration information determining module 11 may be specifically configured to: and carrying the subband configuration information on a second newly added subband indicating parameter, wherein the second newly added subband indicating parameter indicates the initial subband position and the continuous subband quantity of the continuous subband range.
In a fourth specific embodiment, the configuration information determining module 11 may be specifically configured to: and carrying the sub-band configuration information on a third newly added sub-band indicating parameter, wherein the third newly added sub-band indicating parameter indicates the continuous sub-band number and the position of a termination sub-band in the continuous sub-band range.
In a fifth specific embodiment, the configuration information determining module 11 is specifically configured to: and carrying the sub-band configuration information on a fourth newly added sub-band indication parameter, wherein the fourth newly added sub-band indication parameter indicates a starting sub-band position of the continuous sub-band range and a width of the continuous sub-band range.
In a sixth specific embodiment, the configuration information determining module 11 is specifically configured to: and carrying the sub-band configuration information on a fifth newly added sub-band indicating parameter, wherein the fifth newly added sub-band indicating parameter indicates the width of a continuous sub-band range of the continuous sub-band range and the position of a terminated sub-band.
Further, referring to fig. 11, an embodiment of the present application further discloses a PMI feedback apparatus, including:
a receiving module 21, configured to receive subband configuration information fed back by the PMI, where the subband configuration information indicates a continuous subband range used for PMI calculation;
and the PMI calculation module 22 is configured to perform PMI calculation according to the subband configuration information, and feed back a feedback parameter obtained by the calculation.
It can be understood that the PMI feedback apparatus in this embodiment may be specifically located on the user equipment side.
In this embodiment, the subband configuration information is subband configuration information fed back by the PMI, and specifically may be subband configuration information fed back by the Type IIPMI. That is, the PMI feedback in the present embodiment may specifically be Type II PMI feedback.
In a specific embodiment, the PMI feedback apparatus may further include:
an indicator receiving module, configured to receive a PMI format indicator, where the PMI format indicator is configured as subband feedback, and where the PMI format indicator is used to indicate whether a feedback type is subband feedback or wideband feedback. The PMI format indicator may be a PMI-format indicator parameter in Rel-15.
In another specific embodiment, the PMI feedback apparatus may further include:
and the appointment module is used for appointing the default subband feedback with the base station in advance. Further, on the basis that the default PMI feedback type agreed by the user equipment and the base station is subband feedback, in order to make the 5G communication technology in the next stage compatible with more contents of Rel-15 as much as possible, the embodiment may further delete the PMI-format indicator parameter in Rel-15, so that the modified Rel-15 only supports the PMI feedback type of subband feedback, and is suitable for the 5G communication technology Rel-16 in the next stage.
Further, as can be seen from analyzing the technical evolution route of Rel-16, the CQI feedback in the Type II feedback of Rel-16 can support subband feedback and support continuous or discontinuous subband configuration, for this reason, the receiving module 21 in this embodiment may further be configured to: receiving a feedback sub-band indication parameter for CQI calculation, the feedback sub-band indication parameter for CQI calculation indicating a continuous sub-band range or a non-continuous sub-band range for CQI calculation.
In a first specific implementation, the subband configuration information is carried in a feedback subband indication parameter for CQI calculation, where a starting subband of the continuous subband range is a first subband of CQI calculation, and a terminating subband of the continuous subband range is a last subband of CQI calculation. The feedback sub-band indication parameter calculated by the CQI can specifically follow the csi-reporting band parameter in Rel-15.
In a second specific embodiment, the subband configuration information is carried in a first new increasing subband indicating parameter, wherein the first new increasing subband indicating parameter indicates a starting subband position and a terminating subband position of the continuous subband range. The first new-added subband indication parameter may specifically be a parameter added on the basis of Rel-15.
In a third specific implementation, the subband configuration information is carried in a second newly added subband indicating parameter, where the second newly added subband indicating parameter indicates a starting subband position and a number of consecutive subbands in the consecutive subband range. The second newly added subband indicating parameter may specifically be a parameter newly added on the basis of Rel-15.
In a fourth specific implementation, the subband configuration information is carried in a third newly added subband indicating parameter, where the third newly added subband indicating parameter indicates the number of consecutive subbands in the consecutive subband range and a position of a terminating subband. The third newly added subband indication parameter may specifically be a parameter newly added on the basis of Rel-15.
In a fifth specific embodiment, the subband configuration information is carried in a fourth incremented subband indicating parameter, where the fourth incremented subband indicating parameter indicates a starting subband position of the continuous subband range and a width of the continuous subband range. The fourth newly added subband indicating parameter may specifically be a parameter newly added on the basis of Rel-15.
In a sixth specific implementation, the subband configuration information is carried in a fifth added subband indicating parameter, where the fifth added subband indicating parameter indicates a width of a continuous subband range of the continuous subband range and a position of a terminating subband. The fifth newly added subband indicating parameter may specifically be a parameter newly added on the basis of Rel-15.
Further, referring to fig. 12, an embodiment of the present application further discloses a base station 30, which includes a memory 31 and a processor 32, where the memory 31 stores therein computer instructions capable of being executed on the processor 32, and the processor 32 executes the steps of the subband configuration method for PMI feedback disclosed in the foregoing embodiment when executing the computer instructions. For the specific steps of the subband configuration method, reference may be made to corresponding contents disclosed in the foregoing embodiments, and details are not repeated here.
Referring to fig. 12, the base station 30 may further include a power supply 33 for supplying power, an antenna 34 for transmitting radio waves, a heat sink 35 for dissipating heat from the inside of the base station, and a heating device 36 for heating the air inside the base station. It is understood that the antenna type, number and installation orientation of the antenna 34 can be configured according to actual needs, and will not be described herein. In addition, the base station in which the heating device 36 is installed is suitable for use in cold regions with high latitudes.
Further, referring to fig. 13, the embodiment of the present application further discloses a user equipment 40, which includes a memory 41 and a processor 42, where the memory 41 stores therein computer instructions capable of being executed on the processor 42, and the processor 42 executes the computer instructions to perform the steps of the PMI feedback method disclosed in the foregoing embodiment. For the specific steps of the PMI feedback method, reference may be made to corresponding contents disclosed in the foregoing embodiments, and details are not repeated herein.
As shown in fig. 13, the user equipment 40 may further include a battery 43 for providing power, a communication module 44 for establishing communication with the outside, and an interaction device 45 for interacting with the user. The communication module 44 may specifically include, but is not limited to, a short-range communication module such as bluetooth, USB, NFC, and a long-range communication module for communicating with a long-range server and a base station. The interaction means 45 may specifically include, but is not limited to, a touch screen, a physical key, a sound sensor, an image sensor, a fingerprint sensor.
Further, an embodiment of the present application also discloses a computer-readable storage medium, configured to store computer instructions, where the computer instructions, when executed, perform the steps of the method for configuring subbands fed back by PMI disclosed in the foregoing embodiment. For the specific steps of the subband configuration method, reference may be made to corresponding contents disclosed in the foregoing embodiments, and details are not repeated here.
Further, an embodiment of the present application also discloses a computer-readable storage medium, configured to store computer instructions, where the computer instructions, when executed, perform the steps of the PMI feedback method disclosed in the foregoing embodiment. For the specific steps of the PMI feedback method, reference may be made to corresponding contents disclosed in the foregoing embodiments, and details are not repeated herein.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The PMI feedback and subband configuration method and apparatus, the base station, the user equipment, and the medium provided by the present invention are introduced in detail above, and a specific example is applied in the present document to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (29)
1. A subband configuration method for PMI feedback is characterized by comprising the following steps:
determining subband configuration information fed back by the PMI, wherein the subband configuration information indicates a continuous subband range used for PMI calculation;
and sending the sub-band configuration information.
2. The method for configuring subbands based on PMI feedback according to claim 1, prior to determining the subband configuration information based on PMI feedback, further comprising:
configuring a PMI format indicator to subband feedback, the PMI format indicator indicating whether a feedback type is subband feedback or wideband feedback.
3. The method of claim 2, wherein the PMI format indicator is a PMI-format indicator parameter in Rel-15.
4. The method for configuring subbands for PMI feedback according to claim 1, wherein subband feedback is adopted as default in advance with a user equipment.
5. The method of claim 4, wherein the PMI-format indicator parameter in the Rel-15 is deleted.
6. The method for configuring subbands for PMI feedback according to claim 1, further comprising: and determining a feedback sub-band indication parameter for CQI calculation and sending the feedback sub-band indication parameter, wherein the feedback sub-band indication parameter for CQI calculation indicates a continuous sub-band range or a non-continuous sub-band range for CQI calculation.
7. The method according to any of claims 1 to 6, wherein determining subband configuration information for PMI feedback comprises:
and carrying the sub-band configuration information on a feedback sub-band indication parameter of CQI calculation, wherein the starting sub-band of the continuous sub-band range is the first sub-band of the CQI calculation, and the ending sub-band of the continuous sub-band range is the last sub-band of the CQI calculation.
8. The method of claim 7, wherein the feedback subband indication parameter of the CQI calculation follows the csi-reporting band parameter in Rel-15.
9. The method according to any of claims 1 to 6, wherein determining subband configuration information for PMI feedback comprises:
carrying the subband configuration information in a first new increasing subband indicating parameter, wherein the first new increasing subband indicating parameter indicates a starting subband position and an ending subband position of the continuous subband range.
10. The method of claim 9, wherein the first new subband indicating parameter is a new parameter added based on Rel-15.
11. The method according to any of claims 1 to 6, wherein determining subband configuration information for PMI feedback comprises:
and carrying the subband configuration information on a second newly added subband indicating parameter, wherein the second newly added subband indicating parameter indicates the initial subband position and the continuous subband quantity of the continuous subband range.
12. The method of claim 11, wherein the second additional subband indicating parameter is an additional parameter based on Rel-15.
13. An apparatus for configuring subbands for PMI feedback, comprising:
the configuration information determining module is used for determining subband configuration information fed back by the PMI, and the subband configuration information indicates a continuous subband range used for PMI calculation;
and the sending module is used for sending the sub-band configuration information.
14. A PMI feedback method, comprising:
receiving subband configuration information fed back by the PMI, wherein the subband configuration information indicates a continuous subband range used for PMI calculation;
and performing PMI calculation according to the subband configuration information, and feeding back the feedback parameters obtained by calculation.
15. The PMI feedback method of claim 14 further comprising, before receiving the subband configuration information fed back by the PMI:
receiving a PMI format indicator configured as subband feedback, the PMI format indicator indicating whether a feedback type is subband feedback or wideband feedback.
16. The PMI feedback method of claim 15 wherein said PMI format indicator is a PMI-format indicator parameter in Rel-15.
17. The PMI feedback method of claim 14 wherein subband feedback is employed as default in advance with a base station.
18. The PMI feedback method of claim 17 wherein the PMI-format indicator parameter in Rel-15 is deleted.
19. The PMI feedback method of claim 14 further comprising: receiving a feedback sub-band indication parameter for CQI calculation, the feedback sub-band indication parameter for CQI calculation indicating a continuous sub-band range or a non-continuous sub-band range for CQI calculation.
20. The PMI feedback method according to any one of claims 14 to 19 wherein said subband configuration information carries a feedback subband indication parameter for CQI calculation, wherein a starting subband of said continuous subband range is a first subband of CQI calculation, and a terminating subband of said continuous subband range is a last subband of CQI calculation.
21. The PMI feedback method of claim 20 wherein said feedback subband indication parameter for CQI calculation follows the csi-ReportingBand parameter in Rel-15.
22. The PMI feedback method according to any one of claims 14 to 19 wherein said subband configuration information is carried in a first new increasing subband indicating parameter, wherein said first new increasing subband indicating parameter indicates a starting subband position and a terminating subband position of said contiguous subband range.
23. The PMI feedback method of claim 22 wherein said first new-added subband indicating parameter is a new added parameter based on Rel-15.
24. The PMI feedback method according to any one of claims 14 to 19, wherein the subband configuration information is carried in a second newly added subband indicating parameter, wherein the second newly added subband indicating parameter indicates a starting subband position and a number of consecutive subbands of the consecutive subband range.
25. The PMI feedback method of claim 24 wherein said second newly added subband indicating parameter is a newly added parameter on the basis of Rel-15.
26. A PMI feedback apparatus, comprising:
the receiving module is used for receiving subband configuration information fed back by the PMI, and the subband configuration information indicates a continuous subband range used for PMI calculation;
and the PMI calculation module is used for executing PMI calculation according to the subband configuration information and feeding back the feedback parameters obtained by calculation.
27. A base station comprising a memory and a processor, the memory having stored therein computer instructions executable on the processor, wherein the processor when executing the computer instructions performs the steps of the method for subband configuration for PMI feedback according to any one of claims 1 to 12.
28. A user equipment comprising a memory and a processor, the memory having stored therein computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the PMI feedback method of any one of claims 14 to 25.
29. A computer readable storage medium storing computer instructions which when executed perform the steps of the method of any one of claims 1 to 12, 14 to 25.
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