CN108631833B - Uplink precoding transmission method and device and user equipment - Google Patents
Uplink precoding transmission method and device and user equipment Download PDFInfo
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
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- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
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Abstract
The invention provides an uplink precoding transmission method, an uplink precoding transmission device and user equipment, wherein the uplink precoding transmission method comprises the following steps: receiving a precoding index sent by a network side; acquiring the number of uplink resources allocated by a network side; determining grouping information of the precoding resource block group according to the precoding index and the allocated uplink resource number; and performing uplink precoding transmission according to the determined grouping information of the precoding resource block group. The invention can determine the grouping information of the pre-coding resource block group according to the pre-coding index and the distributed uplink resource number, thereby realizing the dynamic configuration of the pre-coding resource block group size between the terminal side and the network side and effectively matching the channel change; meanwhile, the precoding sending behavior of the terminal side can be effectively guided, and the transmission performance of a communication channel is improved.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to an uplink precoding transmission method, an uplink precoding transmission device, and user equipment.
Background
Currently, an uplink communication link in the third generation partnership project (3GPP) specification supports frequency selective precoding, that is, different precoding can be adopted by a user terminal on an allocated resource block. On the other hand, in order to further improve the performance of the communication channel, 3GPP has also explicitly indicated that the UL supports PRB bundling, that is, it is further explicitly supported that different PRBs of the UL may employ the same precoding. However, there is no explicit solution for the current protocol as to how the gNB indicates the Precoding resource block group (PRG) size, wherein it can be considered that the resource blocks in the Precoding resource block group use the same Precoding.
In the prior art, in a physical resource block Bundling (PRB Bundling) precoding technology, PRB Bundling is a unit of a precoding resource block group (PRG), and a size of the PRG is related to a system bandwidth or a terminal bandwidth, where a relationship between a bandwidth and a PRG size is shown in the following table:
| System Bandwidth | PRG SIZE |
| ≤10 | 1 |
| 11-26 | 2 |
| 27-63 | 3 |
| 64-110 | 2 |
as can be seen from the above table, for a certain system bandwidth, a fixed PRG size is used for the corresponding PRG sizes, and the PRG sizes corresponding to different users are the same, that is, the PRG sizes are jointly agreed by the system network side and the terminal side. Therefore, there is a problem that the uplink precoding scheme adopted by the terminal side cannot match the change of the channel condition with the network side.
Disclosure of Invention
The uplink precoding transmission method, the device and the user equipment provided by the invention can realize dynamic configuration of the size of the precoding resource block group and effectively match channel variation.
In a first aspect, the present invention provides an uplink precoding transmission method, including:
receiving a precoding index sent by a network side;
acquiring the number of uplink resources allocated by a network side;
determining grouping information of the precoding resource block group according to the precoding index and the allocated uplink resource number;
and performing uplink precoding transmission according to the determined grouping information of the precoding resource block group.
Optionally, the determining grouping information of the precoding resource block group according to the precoding index and the allocated uplink resource number includes:
calculating the number of precoding indexes according to the precoding indexes;
calculating the size of a precoding resource block group according to the number of the distributed uplink resources and the number of the precoding indexes;
and grouping the allocated uplink resources according to the size of the precoding resource block group.
Optionally, the calculating the size of the precoding resource block group according to the allocated uplink resource number and the precoding index number includes:
calculating the precoding resource block group size according to the following formula:
wherein P' is the size of the precoding resource block group, M is the number of the allocated uplink resources, N is the number of precoding indexes,
indicating rounding up.
Optionally, when the uplink resources allocated by the network side are distributed in a centralized manner, the grouping the allocated uplink resources according to the size of the precoding resource block group includes:
and dividing the allocated uplink resources into N groups, wherein the size of a precoding resource block group contained in the last group is M- (N-1) multiplied by P ', the number of PRBs contained in other groups is P', and the first group corresponds to the position of the frequency start.
Optionally, when the uplink resources allocated by the network side are distributed and the network side does not respectively indicate precoding indexes of the distributed uplink resources, grouping the allocated uplink resources according to the precoding resource block group size includes:
and respectively grouping the uplink resources in each set in the distributed uplink resources, wherein the number of the groups in each set is as follows:
where L represents the number of sets, M1+…+MLM, the uplink resources in the sets are continuous in the frequency domain, and the uplink resources among the sets are discontinuous in the frequency domain;
when K is1+…+KLWhen N, grouping the allocated uplink resources according to the grouping made for the uplink resources in each set;
when K is1+…+KLWhen > N, mix min (K)i) The number of groups contained in the corresponding set remains constant, max (K)i) The number of groups of the highest frequency domain set in the corresponding set is subtracted by 1, and then K is updated1+…+KLIf N is still true, max (K) continues to be presenti) Subtracting 1 from the number of groups of the highest frequency domain set in the corresponding set, and iterating until K1+…+KLN is true, and at this time, the uplink resource may be grouped into the allocated uplink resource; where i ∈ (1, …, L).
Optionally, when the uplink resources allocated by the network side are distributed and the network side indicates precoding indexes of the distributed uplink resources, grouping the allocated uplink resources according to the precoding resource block group size includes:
dividing uplink resources in each set in the distributed uplink resources into n subgroups respectively, wherein the size of a precoding resource block group contained in the last subgroup is m- (n-1) multiplied by P ', the number of PRBs contained in other subgroups is P', the first subgroup corresponds to the position of the frequency start of the uplink resources in the set, m is the number of the uplink resources in the set, and n is the number of precoding indexes corresponding to the set;
the grouping of the uplink resources in each set is combined as a grouping of the allocated uplink resources.
Optionally, the performing uplink precoding transmission according to the determined grouping information of the precoding resource block group includes:
and performing uplink precoding transmission after the precoding is in one-to-one correspondence with the determined precoding resource block groups.
In a second aspect, the present invention provides an uplink precoding transmission apparatus, including:
a receiving unit, configured to receive a precoding index sent by a network side;
an obtaining unit, configured to obtain the number of uplink resources allocated by a network side;
a determining unit, configured to determine grouping information of the precoding resource block group according to the precoding index and the allocated uplink resource number;
and the transmission unit is used for carrying out uplink precoding transmission according to the determined grouping information of the precoding resource block group.
Optionally, the determining unit includes:
the first calculation module is used for calculating the precoding index number according to the precoding index;
the second calculation module is used for calculating the size of the precoding resource block group according to the number of the distributed uplink resources and the number of the precoding indexes;
and the grouping module is used for grouping the distributed uplink resources according to the size of the precoding resource block group.
Optionally, the second calculating module is configured to calculate a precoding resource block group size according to the following formula:
wherein P' is the size of the precoding resource block group, M is the number of the allocated uplink resources, N is the number of precoding indexes,
indicating rounding up.
Optionally, when the uplink resources allocated by the network side are distributed in a centralized manner, the grouping module is configured to divide the allocated uplink resources into N groups, where the size of the precoding resource block group included in the last group is M- (N-1) × P ', the number of PRBs included in other groups is P', and the first group corresponds to the position of the frequency start.
Optionally, when the uplink resources allocated by the network side are distributed in a distributed manner and the network side does not indicate precoding indexes of the distributed uplink resources, the grouping module is configured to group the uplink resources in each set of the distributed uplink resources, where the number of groups in each set is:
where L represents the number of sets, M1+…+MLM, the uplink resources in the sets are continuous in the frequency domain, and the uplink resources among the sets are discontinuous in the frequency domain;
when K is1+…+KLWhen N, grouping the allocated uplink resources according to the grouping made for the uplink resources in each set;
when K is1+…+KLWhen > N, mix min (K)i) The number of groups contained in the corresponding set remains constant, max (K)i) The number of groups of the highest frequency domain set in the corresponding set is subtracted by 1, and then K is updated1+…+KLIf N is still true, max (K) continues to be presenti) Subtracting 1 from the number of groups of the highest frequency domain set in the corresponding set, and iterating until K1+…+KLN is true, and at this time, the uplink resource may be grouped into the allocated uplink resource; where i ∈ (1, …, L).
Optionally, when the uplink resources allocated by the network side are distributed in a distributed manner and the network side indicates precoding indexes of the distributed uplink resources, the grouping module is configured to divide the uplink resources in each set in the distributed uplink resources into n subgroups, respectively, where a size of a precoding resource block group included in a last subgroup is m- (n-1) × P ', a number of PRBs included in other subgroups is P', a first subgroup corresponds to a frequency start position of the uplink resources in the set, where m is the number of the uplink resources in the set, and n is the number of the precoding indexes corresponding to the set; the grouping of the uplink resources in each set is combined as a grouping of the allocated uplink resources.
Optionally, the transmission module is configured to perform uplink precoding transmission after precoding and the determined precoding resource block groups are in one-to-one correspondence.
In a third aspect, the present invention provides a user equipment, where the user equipment includes the above uplink precoding transmission apparatus.
The transmission method solves the problem that the transmission performance of a communication channel is reduced due to unreasonable allocation of the communication channel because the communication channel is precoded by using the fixed precoding resource block group size jointly agreed by a system network side and a terminal side in the dynamic change process.
Meanwhile, the uplink precoding transmission method determines the grouping information of the precoding resource block group according to the precoding index and the allocated uplink resource number, and the grouping information is used as an implicit mode to carry out indication transmission, and meanwhile, the dynamic configuration of the size of the precoding resource block group can be realized without other additional signaling overhead, and the precoding sending behavior of the terminal side can be effectively guided.
Drawings
Fig. 1 is a flowchart of an uplink precoding transmission method according to an embodiment of the present invention;
fig. 2 is a flowchart of an uplink precoding transmission method according to another embodiment of the present invention;
fig. 3 is a diagram illustrating pre-uplink resource grouping according to an embodiment of the present invention;
fig. 4 is a diagram illustrating pre-uplink resource grouping according to another embodiment of the present invention;
fig. 5 is a diagram illustrating uplink resource grouping according to another embodiment of the present invention;
fig. 6 is a diagram illustrating uplink resource grouping according to another embodiment of the present invention;
fig. 7 is a schematic structural diagram of an uplink precoding transmission apparatus according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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.
An embodiment of the present invention provides an uplink precoding transmission method, as shown in fig. 1, where the uplink precoding transmission method includes:
s1, receiving a precoding index sent by a network side;
s2, acquiring the number of uplink resources allocated by the network side;
s3, determining grouping information of the precoding resource block group according to the precoding index and the allocated uplink resource number;
and S4, performing uplink precoding transmission according to the determined grouping information of the precoding resource block group.
On one hand, the transmission method in the embodiment of the invention obtains a precoding index sent by a network side to a terminal side and the number of uplink resources allocated by the network side, wherein the precoding index and the number of the allocated uplink resources reflect the change condition of a communication channel, and then the terminal side determines the grouping information of a precoding resource block group according to the precoding index reflecting the change condition of the communication channel and the number of the allocated uplink resources, so as to dynamically match the grouping information of a precoding group and effectively match the change of the channel; it is also possible to effectively guide the precoding transmission behavior at the terminal side.
On the other hand, the transmission method directly determines the grouping information of the precoding resource block group according to the precoding index and the allocated uplink resource number, and forms an implicit mode to carry out indication transmission on the grouping information of the determined precoding resource block group; therefore, the transmission method can realize the indication transmission of the grouping information of the precoding resource block group in an implicit mode without additional signaling overhead, thereby improving the utilization rate of a communication channel and the data transmission efficiency.
Further, as shown in fig. 2, the determining grouping information of the precoding resource block group according to the precoding index and the allocated uplink resource number includes:
s31, calculating the precoding index number according to the precoding index;
s32, calculating the size of a precoding resource block group according to the number of the distributed uplink resources and the number of the precoding indexes;
s33, grouping the distributed uplink resources according to the size of the precoding resource block group.
Specifically, in the transmission method in this embodiment, the terminal side receives the precoding index sent by the network side through the downlink DCI, and the number of uplink resources allocated to the terminal side by the network side, and then the terminal side calculates the number of precoding indexes according to the precoding index; calculating the size of a precoding resource block group according to the number of the distributed uplink resources and the number of the precoding indexes; finally, grouping the distributed uplink resources according to the size of the precoding resource block group; the size of the precoding resource block group can be dynamically matched according to the precoding index reflecting the dynamic change of the communication channel and the uplink resource number, and uplink precoding transmission is carried out according to the determined grouping information of the precoding resource block group. The transmission method of the embodiment can adjust the size of the precoding resource block group according to the change of the communication channel, further dynamically determine the grouping information of the precoding resource block group, and avoid unreasonable allocation of the communication channel caused by precoding by using the fixed size of the precoding resource block group in the dynamic change process of the communication channel, further reduce the transmission performance of the communication channel. Therefore, the transmission method in this embodiment can effectively match the change of the communication channel and achieve the effect of improving the transmission performance of the communication channel.
Further, the calculating the size of the precoding resource block group according to the allocated uplink resource number and the precoding index number includes:
calculating the precoding resource block group size according to the following formula:
wherein P' is the size of the precoding resource block group, M is the number of the allocated uplink resources, N is the number of precoding indexes,
indicating rounding up.
As shown in fig. 3, in this embodiment, when the number M of physical resource blocks is 5 and the precoding index N is 3, the precoding resource block group size P' is 2.
Further, when the uplink resources allocated by the network side are distributed in a centralized manner, the grouping the allocated uplink resources according to the size of the precoding resource block group includes:
and dividing the allocated uplink resources into N groups, wherein the size of a precoding resource block group contained in the last group is M- (N-1) multiplied by P ', the number of PRBs contained in other groups is P', and the first group corresponds to the position of the frequency start.
Further, when the uplink resources allocated by the network side are distributed and the network side does not indicate the precoding indexes of the distributed uplink resources, grouping the allocated uplink resources according to the precoding resource block group size includes:
and respectively grouping the uplink resources in each set in the distributed uplink resources, wherein the number of the groups in each set is as follows:
where L represents the number of sets, M1+…+MLM, the uplink resources in the sets are continuous in the frequency domain, and the uplink resources among the sets are discontinuous in the frequency domain;
when K is1+…+KLWhen N, grouping the allocated uplink resources according to the grouping made for the uplink resources in each set;
when K is1+…+KLWhen > N, mix min (K)i) The number of groups contained in the corresponding set remains constant, max (K)i) The number of groups of the highest frequency domain set in the corresponding set is subtracted by 1, and then K is updated1+…+KLIf N is still true, max (K) continues to be presenti) Subtracting 1 from the number of groups of the highest frequency domain set in the corresponding set, and iterating until K1+…+KLN is true, and at this time, the uplink resource may be grouped into the allocated uplink resource; where i ∈ (1, …, L).
In this embodiment, when the uplink resources allocated by the network side are distributed in a distributed manner and the network side does not respectively indicate precoding indexes of the distributed uplink resources; for example, as shown in fig. 4, when the number of allocated uplink resources M is 5 (the first number of uplink resources M)13, second uplink resource number M22), and calculating the precoding index number N to be 3 according to the precoding indexes of 1, 2 and 3;
then according to
Calculating to obtain the precoding resource block group size P' as 2;
then, according to the precoding resource block group size P' being 2, grouping the uplink resources in each set in the distributed uplink resources, respectively, where the number of groups in each set is: the first set includes
Set, the second set comprising
Group, and 2+1 ═ 3.
For example, as shown in fig. 5, when the number of allocated uplink resources M is 7 (the first number of uplink resources M)12, second uplink resource number M25), and calculating the precoding index number N to be 2 according to the precoding indexes of 1 and 2;
then according to
Calculating to obtain a precoding resource block group size P' ═ 4;
then, according to the precoding resource block group size P' being 4, grouping the uplink resources in each set in the distributed uplink resources, respectively, where the number of groups in each set is: the first set includes
Set, the second set comprising
Group, and 2+1 > 2;
then min (K)i) The number of groups contained in the corresponding set remains unchanged, max (K)i) The number of groups of the highest frequency domain set in the corresponding set minus 1, max (K)i) -1, therefore, K is calculated1＝1，K2＝2-1＝1。
Further, when the uplink resources allocated by the network side are distributed and the network side indicates the precoding indexes of the distributed uplink resources, grouping the allocated uplink resources according to the precoding resource block group size includes:
dividing uplink resources in each set in the distributed uplink resources into n subgroups respectively, wherein the size of a precoding resource block group contained in the last subgroup is m- (n-1) multiplied by P ', the number of PRBs contained in other subgroups is P', the first subgroup corresponds to the position of the frequency start of the uplink resources in the set, m is the number of the uplink resources in the set, and n is the number of precoding indexes corresponding to the set;
the grouping of the uplink resources in each set is combined as a grouping of the allocated uplink resources.
Specifically, in the transmission method in this embodiment, because the time distribution situation is complex in the dynamic change process of the uplink resources of the communication channel, if the allocated uplink resources are grouped only in one grouping manner, an optimal grouping manner cannot be achieved, and therefore, when the uplink resources allocated by the network side are distributed in a distributed manner and the network side does not respectively indicate the precoding indexes of the distributed uplink resources, a first grouping manner is adopted; and when the uplink resources allocated by the network side are distributed and the network side respectively indicates the precoding indexes of the distributed uplink resources, a second grouping mode is adopted, so that the uplink resources can be more effectively allocated, and the change of the communication channel can be effectively matched.
Further, the performing uplink precoding transmission according to the determined grouping information of the precoding resource block group includes:
and performing uplink precoding transmission after the precoding is in one-to-one correspondence with the determined precoding resource block groups.
In this embodiment, when the uplink resources allocated by the network side are distributed in a distributed manner and the network side indicates precoding indexes of the distributed uplink resources respectively; for example, as shown in fig. 6, the allocated uplink resources are grouped according to the precoding resource block group size, and are divided into two groups, i.e. set1 and set2, where set1 is M1Number of consecutive uplink resources, corresponding to N1A number of precoding indices; set2 from M1Number of consecutive uplink resources, corresponding to N2Number of precoding indices. Wherein (M)1，N1)＝(3，2)，(M2，N2) When 2, 1, then according to
The second precoding resource block group size P' of the physical resource block set1 is calculated to be 2, and the physical resource isThe precoding resource block group size P' of the block set2 is 2.
An embodiment of the present invention further provides an uplink precoding transmission apparatus, as shown in fig. 7, the apparatus includes:
a receiving unit, configured to receive a precoding index sent by a network side;
an obtaining unit, configured to obtain the number of uplink resources allocated by a network side;
a determining unit, configured to determine grouping information of the precoding resource block group according to the precoding index and the allocated uplink resource number;
and the transmission unit is used for carrying out uplink precoding transmission according to the determined grouping information of the precoding resource block group.
Optionally, the determining unit includes:
the first calculation module is used for calculating the precoding index number according to the precoding index;
the second calculation module is used for calculating the size of the precoding resource block group according to the number of the distributed uplink resources and the number of the precoding indexes;
and the grouping module is used for grouping the distributed uplink resources according to the size of the precoding resource block group.
Optionally, the second calculating module is configured to calculate a precoding resource block group size according to the following formula:
wherein P' is the size of the precoding resource block group, M is the number of the allocated uplink resources, N is the number of precoding indexes,
indicating rounding up.
Optionally, when the uplink resources allocated by the network side are distributed in a centralized manner, the grouping module is configured to divide the allocated uplink resources into N groups, where the size of the precoding resource block group included in the last group is M- (N-1) × P ', the number of PRBs included in other groups is P', and the first group corresponds to the position of the frequency start.
Optionally, when the uplink resources allocated by the network side are distributed in a distributed manner and the network side does not indicate precoding indexes of the distributed uplink resources, the grouping module is configured to group the uplink resources in each set of the distributed uplink resources, where the number of groups in each set is:
where L represents the number of sets, M1+…+MLM, the uplink resources in the sets are continuous in the frequency domain, and the uplink resources among the sets are discontinuous in the frequency domain;
when K is1+…+KLWhen N, grouping the allocated uplink resources according to the grouping made for the uplink resources in each set;
when K is1+…+KLWhen > N, mix min (K)i) The number of groups contained by the corresponding set remains unchanged,
max(Ki) The number of groups of the highest frequency domain set in the corresponding set is subtracted by 1, and then, if updated, the number of groups is updated
K1+…+KLIf N is still true, max (K) continues to be presenti) Subtracting 1 from the number of groups of the highest frequency domain set in the corresponding set, and iterating until K1+…+KLN is true, and at this time, the uplink resource may be grouped into the allocated uplink resource; where i ∈ (1, …, L).
Optionally, when the uplink resources allocated by the network side are distributed in a distributed manner and the network side indicates precoding indexes of the distributed uplink resources, the grouping module is configured to divide the uplink resources in each set in the distributed uplink resources into n subgroups, respectively, where a size of a precoding resource block group included in a last subgroup is m- (n-1) × P ', a number of PRBs included in other subgroups is P', a first subgroup corresponds to a frequency start position of the uplink resources in the set, where m is the number of the uplink resources in the set, and n is the number of the precoding indexes corresponding to the set; the grouping of the uplink resources in each set is combined as a grouping of the allocated uplink resources.
Optionally, the transmission module is configured to perform uplink precoding transmission after precoding and the determined precoding resource block groups are in one-to-one correspondence.
The present embodiment also provides a user equipment, where the user equipment includes the uplink precoding transmission apparatus.
The apparatus of this embodiment may be configured to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. An uplink precoding transmission method, comprising:
receiving a precoding index sent by a network side;
acquiring the number of uplink resources allocated by a network side;
determining grouping information of the precoding resource block group according to the precoding index and the allocated uplink resource number;
performing uplink precoding transmission according to the determined grouping information of the precoding resource block group;
the determining grouping information of the precoding resource block group according to the precoding index and the allocated uplink resource number comprises: calculating the number of precoding indexes according to the precoding indexes; calculating the size of a precoding resource block group according to the number of the distributed uplink resources and the number of the precoding indexes; grouping the allocated uplink resources according to the size of the precoding resource block group;
the calculating the size of the precoding resource block group according to the allocated uplink resource number and the precoding index number comprises: calculating the precoding resource block group size according to the following formula:
wherein P' is the size of the precoding resource block group, M is the number of the allocated uplink resources, N is the number of precoding indexes,
represents rounding up;
when the uplink resources allocated by the network side are distributed and the network side does not respectively indicate the precoding indexes of the distributed uplink resources, grouping the allocated uplink resources according to the precoding resource block group size comprises: and respectively grouping the uplink resources in each set in the distributed uplink resources, wherein the number of the groups in each set is as follows:
where L represents the number of sets, M1+…+MLM, the uplink resources in the sets are continuous in the frequency domain, and the uplink resources among the sets are discontinuous in the frequency domain; when K is1+…+KLWhen N, grouping the allocated uplink resources according to the grouping made for the uplink resources in each set; when K is1+…+KL>When N is higher, mixing min (K)i) The number of groups contained in the corresponding set remains constant, max (K)i) Corresponding highest frequency domain in the setThe number of groups in the set is subtracted by 1, and then K is updated1+…+KL>If N is still true, max (K) continues at this timei) Subtracting 1 from the number of groups of the highest frequency domain set in the corresponding set, and iterating until K1+…+KLN is true, and at this time, the uplink resource may be grouped into the allocated uplink resource; where i ∈ (1, …, L).
2. The method according to claim 1, wherein when the uplink resources allocated on the network side are distributed in a centralized manner, the grouping the allocated uplink resources according to the precoding resource block group size includes:
and dividing the allocated uplink resources into N groups, wherein the size of a precoding resource block group contained in the last group is M- (N-1) multiplied by P ', the size of a precoding resource block group contained in the other groups is P', and the first group corresponds to the position of the frequency start.
3. The method of claim 1, wherein when the uplink resources allocated by the network side are distributed and the network side respectively indicates precoding indexes of the distributed uplink resources, the grouping the allocated uplink resources according to the precoding resource block group size comprises:
dividing uplink resources in each set in the distributed uplink resources into n subgroups respectively, wherein the size of a precoding resource block group contained in the last subgroup is m- (n-1) multiplied by P ', the size of a precoding resource block group contained in other subgroups is P', the first subgroup corresponds to the position of the frequency start of the uplink resources in the set, m is the number of the uplink resources in the set, and n is the number of precoding indexes corresponding to the set;
the grouping of the uplink resources in each set is combined as a grouping of the allocated uplink resources.
4. The method according to any of claims 1 to 3, wherein the performing uplink precoding transmission according to the determined grouping information of the precoding resource block group comprises:
and performing uplink precoding transmission after the precoding is in one-to-one correspondence with the determined precoding resource block groups.
5. An uplink precoding transmission apparatus, comprising:
a receiving unit, configured to receive a precoding index sent by a network side;
an obtaining unit, configured to obtain the number of uplink resources allocated by a network side;
a determining unit, configured to determine grouping information of the precoding resource block group according to the precoding index and the allocated uplink resource number;
a transmission unit, configured to perform uplink precoding transmission according to the determined grouping information of the precoding resource block group;
the determination unit includes: the first calculation module is used for calculating the precoding index number according to the precoding index; the second calculation module is used for calculating the size of the precoding resource block group according to the number of the distributed uplink resources and the number of the precoding indexes; the grouping module is used for grouping the distributed uplink resources according to the size of the precoding resource block group;
the second calculating module is configured to calculate a precoding resource block group size according to the following formula:
wherein P' is the size of the precoding resource block group, M is the number of the allocated uplink resources, N is the number of precoding indexes,
represents rounding up;
when the uplink resources allocated by the network side are distributed in a distributed manner and the network side does not indicate the precoding index of the distributed uplink resources, the grouping module is configured to group the uplink resources in each set in the distributed uplink resources, where the number of groups in each set is:
where L represents the number of sets, M1+…+MLM, the uplink resources in the sets are continuous in the frequency domain, and the uplink resources among the sets are discontinuous in the frequency domain; when K is1+…+KLWhen N, grouping the allocated uplink resources according to the grouping made for the uplink resources in each set; when K is1+…+KL>When N is higher, mixing min (K)i) The number of groups contained in the corresponding set remains constant, max (K)i) The number of groups of the highest frequency domain set in the corresponding set is subtracted by 1, and then K is updated1+…+KL>If N is still true, max (K) continues at this timei) Subtracting 1 from the number of groups of the highest frequency domain set in the corresponding set, and iterating until K1+…+KLN is true, and at this time, the uplink resource may be grouped into the allocated uplink resource; where i ∈ (1, …, L).
6. The apparatus according to claim 5, wherein when the uplink resources allocated on the network side are distributed in a centralized manner, the grouping module is configured to group the allocated uplink resources into N groups, where the precoding resource block group size included in the last group is M- (N-1) x P ', the precoding resource block group size included in the other groups is P', and the first group corresponds to the position of the frequency start.
7. The apparatus according to claim 5, wherein when the uplink resources allocated by the network side are distributed and the network side respectively indicates precoding indexes of the distributed uplink resources, the grouping module is configured to divide the uplink resources in each set of the distributed uplink resources into n subgroups, where a last subgroup includes a precoding resource block group size of m- (n-1) x P ', and other subgroups include a precoding resource block group size of P', and the first subgroup corresponds to a position of a frequency start of the uplink resources in the set, where m is a number of uplink resources in the set and n is a number of precoding indexes corresponding to the set; the grouping of the uplink resources in each set is combined as a grouping of the allocated uplink resources.
8. The apparatus according to any one of claims 5 to 7, wherein the transmitting unit is configured to perform uplink precoding transmission after performing one-to-one correspondence between precoding and the determined precoding resource block groups.
9. A user equipment, characterized in that the user equipment comprises the uplink precoding transmission apparatus according to any one of claims 5 to 8.
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