CN108111264B - Information feedback method and device - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1861—Physical mapping arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
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Abstract
A method and a device for information feedback comprise the following steps: configuring port information used in channel information measurement for a terminal; when port selection indication information is configured for channel information measurement with the transmission layer number being a preset numerical value, determining first mapping relation information of a selected port and a transmission layer and/or second mapping relation information of the selected port and a transmission block; and indicating the determined first mapping relation information and/or the second mapping relation information to the terminal. The embodiment of the invention realizes the indication of the mapping relation information of the port and the transmission layer, avoids the transmission of the same transmission block on the port or the layer with larger performance difference and improves the transmission efficiency.
Description
Technical Field
The present disclosure relates to, but not limited to, wireless communication technologies, and more particularly, to a method and apparatus for information feedback.
Background
In wireless communication, under the condition that channel reciprocity exists, a terminal does not need to feed back precoding indication information, and only needs to feed back rank indication and channel quality indication; the precoding may be achieved by reciprocity using an uplink channel measured based on an uplink sounding reference signal, which is called Non-precoding matrix indicator feedback (Non-PMI based feedback), so that a large amount of feedback overhead, especially for subband feedback, may be saved. Since the terminal still needs to calculate the rank indication and the channel quality indication, it still needs to use one transmission hypothesis for calculation.
In the air interface of a fifth generation mobile communication system, when a base station sends a channel state information reference signal, some pre-coding processing is already carried out; in feedback, rank indication and channel quality indication may be generally computed based on port selection hypotheses (or codewords embodied as port selection); for example, when a Non-PMI based feedback is used for a channel state information reference signal of 8 ports and different transport layers (Rank) are transmitted, the ports (ports) used correspondingly may refer to table 1:
| Rank 1 | Rank 2 | …… | Rank 8 |
| selecting port i | Selecting port j, k | …… | Selecting ports 1-8 |
TABLE 1
In order to obtain sufficient flexibility, here, ports i, j, k, etc. can be selected by the base station in 8 ports; that is, the base station may configure the ports, and inform which ports are selected and which ports are restricted; for port selection and limitation, a simple manner includes that port selection and limitation are realized in a bitmap file (bitmap) manner, and table 2 is an illustration of port selection and limitation realized in a bitmap file (bitmap) manner, as shown in table 2:
| port 1 | Port 2 | Port 3 | Port 4 | Port 5 | Port 6 | Port 7 | Port 8 | |
| Rank 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| Rank 2 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| Rank 3 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 |
| Rank 4 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 0 |
| Rank 5 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 0 |
| Rank 6 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 1 |
| Rank 7 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 |
| Rank 8 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
TABLE 2
Table 2 uses 64 bits (bits) for notification, although the bitmap approach seems flexible, in practice, when there are multiple transport blocks, only predefined rules can be used for how the transport blocks are mapped onto the transport layer/port; table 3 is an illustration of predefined rules:
| CW1 | CW2 | |
| Rank 5 | 3 ports with smaller index numbers | 2 ports with larger index numbers |
| Rank 6 | 3 ports with smaller index numbers | 3 ports with larger index numbers |
| Rank 7 | 4 ports with smaller index numbers | 3 ports with larger index numbers |
| Rank 8 | 4 ports with smaller index numbers | 8 ports with larger index numbers |
TABLE 3
The predefined rule manner cannot guarantee that the transport blocks are mapped to ports (corresponding to transport layers) with similar performance, and this manner may cause the same transport block to be transmitted on ports/layers with larger performance difference, thereby reducing transmission efficiency.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
Embodiments of the present invention provide an information feedback method and apparatus, which can implement indication of mapping relationship information between a port and a transport layer, avoid transmission of a same transport block on a port or a transport layer with a large performance difference, and improve transmission efficiency.
The embodiment of the invention provides a method for realizing information feedback, which comprises the following steps:
configuring port information used in channel information measurement for a terminal;
when port selection indication information is configured for channel information measurement with the number of transmission layers being a preset value, determining first mapping relation information of a selected port and a transmission layer and/or second mapping relation information of the selected port and a transmission block;
and indicating the determined first mapping relation information and/or the second mapping relation information to the terminal.
Optionally, the method further includes:
and the terminal calculates rank indication and channel quality indication according to the port selection indication information and the first mapping relation information and/or the second mapping relation information.
Optionally, the determining first mapping relationship information between the selected port and the transport layer and/or second mapping relationship information between the selected port and the transport block includes:
and when the preset value is larger than a preset threshold value, determining first mapping relation information of the selected port and the transmission layer and/or second mapping relation information of the selected port and the transmission block.
Optionally, the second mapping relationship information includes: information of one or more ports to which the transport block is mapped;
the first mapping relationship information includes: number information of selected ports corresponding to one or more transport layers.
Optionally, the second mapping relationship information includes:
and in the two transport blocks, the transport block with the smaller layer number is mapped to the information of all the ports.
Optionally, the first mapping relationship information includes:
number information of each selected port corresponding to all transmission layers; or,
and corresponding to the number of the transmission layers with the preset value, and selecting the number information of the ports with the preset value.
Optionally, before the indicating the determined mapping relationship information to the terminal, the method further includes:
information of a transport layer to which the transport block is mapped is indicated to the terminal.
On the other hand, an apparatus for information feedback according to an embodiment of the present invention includes: the device comprises a configuration unit, a determination unit and an indication unit; wherein,
the configuration unit is used for: configuring port information used in channel information measurement for a terminal;
the determination unit is used for: when port selection indication information is configured for channel information measurement with the transmission layer number being a preset numerical value, determining first mapping relation information of a selected port and a transmission layer and/or second mapping relation information of the selected port and a transmission block;
the indication unit is used for: and indicating the determined first mapping relation information and/or the second mapping relation information to the terminal.
Optionally, the determining unit is configured to determine first mapping relationship information between the selected port and the transport layer and/or second mapping relationship information between the selected port and the transport block, and includes:
and when the preset value is larger than a preset threshold value, determining first mapping relation information of the selected port and the transmission layer and/or second mapping relation information of the selected port and the transmission block.
Optionally, the second mapping relationship information includes: information of one or more ports to which the transport block is mapped;
the first mapping relationship information includes: number information of selected ports corresponding to one or more transport layers.
Optionally, the second mapping relationship information includes:
and in the two transport blocks, the transport block with the smaller layer number is mapped to the information of all the ports.
Optionally, the first mapping relationship information includes:
number information of each selected port corresponding to all transmission layers; or,
and corresponding to the number of the transmission layers with the preset value, and selecting the number information of the ports with the preset value.
Optionally, the indicating unit is further configured to: indicating information of a transport layer to which the transport block is mapped to the terminal before indicating the determined mapping relationship information to the terminal.
In another aspect, an apparatus according to an embodiment of the present invention includes: a memory and a processor; wherein,
the processor is configured to execute program instructions in the memory;
the program instructions read on the processor to perform the following operations:
configuring port information used in channel information measurement for a terminal;
when port selection indication information is configured for channel information measurement with the transmission layer number being a preset numerical value, determining first mapping relation information of a selected port and a transmission layer and/or second mapping relation information of the selected port and a transmission block;
and indicating the determined first mapping relation information and/or the second mapping relation information to the terminal.
In still another aspect, an embodiment of the present invention further provides a computer storage medium, where computer-executable instructions are stored in the computer storage medium, and the computer-executable instructions are configured to perform the foregoing method.
Compared with the related art, the technical scheme of the application comprises the following steps: configuring port information used in channel information measurement for a terminal; when port selection indication information is configured for channel information measurement with the transmission layer number being a preset numerical value, determining first mapping relation information of a selected port and a transmission layer and/or second mapping relation information of the selected port and a transmission block; and indicating the determined first mapping relation information and/or the second mapping relation information to the terminal. The embodiment of the invention realizes the indication of the mapping relation information of the port and the transmission layer, avoids the transmission of the same transmission block on the port or the layer with larger performance difference and improves the transmission efficiency.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a flowchart of a method for implementing information feedback according to an embodiment of the present invention;
fig. 2 is a block diagram of an apparatus for implementing information feedback according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
Fig. 1 is a flowchart of a method for implementing information feedback according to an embodiment of the present invention, as shown in fig. 1, including:
optionally, the determining the first mapping relationship information between the selected port and the transport layer and/or the second mapping relationship information between the selected port and the transport block in the embodiment of the present invention includes:
and when the preset value is larger than a preset threshold value, determining first mapping relation information of the selected port and the transmission layer and/or second mapping relation information of the selected port and the transmission block.
It should be noted that the preset threshold value can be determined by one skilled in the art after analysis.
And 103, indicating the determined first mapping relation information and/or the second mapping relation information to the terminal.
Optionally, the method in the embodiment of the present invention further includes: and the terminal calculates rank indication and channel quality indication according to the port selection indication information and the first mapping relation information and/or the second mapping relation information. Optionally, in the embodiments of the present invention:
the second mapping relationship information includes: information of one or more ports to which the transport block is mapped;
the first mapping relationship information includes: number information of selected ports corresponding to one or more transport layers.
Optionally, the second mapping relationship information in the embodiment of the present invention includes:
and in the two transport blocks, the transport block with the smaller layer number is mapped to the information of all the ports.
The method of an embodiment of the present invention is illustrated by way of example below:
assume RANK is 5 and transport block (CW)1 is mapped to 3 layers and CW2 is mapped to 2 layers; the embodiment of the invention can generate the information of all ports mapped by the transmission blocks with fewer layers and feed the information back to the terminal; i.e., information indicating only two ports to which CW2 is mapped is required; in the embodiment of the present invention, the number of the selected ports is 5, and the second mapping relationship information includes 10 possibilities, so that the indication can be performed through 4-bit information;
let RANK be 5 and CW1 be mapped to 4 layers and CW2 to 1 layer; the embodiment of the invention can generate the information of all ports mapped by the transmission blocks with fewer layers and feed the information back to the terminal; i.e., information indicating only one port to which CW2 is mapped is required; in the embodiment of the present invention, the number of the selected ports is 5, and the second mapping relationship information includes 5 possibilities, so that the indication can be performed through 3-bit information;
if the CW to layer mapping of RANK 5 is: CW1 is mapped to 3 layers and CW2 is mapped to 2 layers; or, CW1 is mapped to 4 layers and CW2 is mapped to 1 layer; then, the embodiment of the present invention has 15 possibilities in total, and the indication can be performed through 4-bit information;
let RANK be 6 and CW1 be mapped to 3 layers and CW2 to 3 layers; the embodiment of the present invention may indicate information of three ports to which CW1 or CW2 is mapped; in the embodiment of the present invention, the number of the selected ports is 6, and the second mapping relationship information includes 10 possibilities, so that the indication can be performed through 5-bit information;
let RANK be 6 and CW1 be mapped to 4 layers and CW2 to 2 layers; the embodiment of the invention can generate the information of all ports mapped by the transmission blocks with fewer layers and feed the information back to the terminal; i.e., information indicating only two ports to which CW2 is mapped is required; in the embodiment of the present invention, the number of the selected ports is 6, and the second mapping relationship information includes 15 possibilities, so that the indication can be performed through 4-bit information;
if the CW to layer mapping of RANK 6 is: CW1 is mapped to 3 layers and CW2 is mapped to 3 layers; or, CW1 is mapped to 4 layers and CW2 is mapped to 2 layers; then, the embodiment of the present invention has 35 possibilities in total, and can indicate through 6bit information;
optionally, before indicating the determined second mapping relationship information to the terminal, the method in the embodiment of the present invention further includes:
information indicating a transport layer to which the transport block is mapped.
The embodiment of the invention can adopt 1bit information to indicate the layers to which CW1 and CW2 are mapped; for example, indicating CW1 is mapped to 3 layers and CW2 is mapped to 3 layers; after indicating information of a layer to which the transport block is mapped, second mapping indication information is generated and fed back.
Optionally, the first mapping relationship information in the embodiment of the present invention includes:
number information of each selected port corresponding to all transmission layers; or,
and corresponding to the number of the transmission layers with the preset value, and selecting the number information of the ports with the preset value.
The following describes the mapping relationship by way of example, where the port number implemented by the present invention is a preset number, and the first mapping relationship information includes number information corresponding to all layers and selected for each port:
if RANK is 5, then 5 ports need to be selected, and the first mapping relationship information in the embodiment of the present invention includes information of each selected port; the first port is selected by C (8, 1) ═ 8, and the embodiment of the present invention may adopt 3-bit information indication; the second port is selected in a manner of C (7, 1) ═ 7, and the embodiment of the present invention may adopt 3-bit information indication; by analogy, the fifth port has a selection mode of C (4, 1) ═ 4, and the embodiment of the present invention can adopt 2-bit information indication;
optionally, the embodiment of the present invention may use 1bit information to indicate the layers to which CW1 and CW2 are mapped; for example, indicating CW1 is mapped to 3 layers and CW2 is mapped to 3 layers; after indicating information of a layer to which the transport block is mapped, mapping indication information is regenerated and fed back.
If RANK is 6, at this time, 6 ports need to be selected, and the first mapping relationship information in the embodiment of the present invention includes information of each selected port; the first port is selected by C (8, 1) ═ 8, and the embodiment of the present invention may adopt 3-bit information indication; the second port is selected in a manner of C (7, 1) ═ 7, and the embodiment of the present invention may adopt 3-bit information indication; by analogy, the sixth port has a selection mode of C (3, 1) ═ 3, and the embodiment of the present invention can adopt 2-bit information indication;
the following describes the first mapping relationship by way of example, where the port number implemented by the present invention is a preset number, and the first mapping relationship information includes number information corresponding to the preset number of transport layers, where the selected preset number of ports:
if RANK is 5, after grouping according to CW1 and CW2, indicating number information of ports corresponding to a part of layers, assuming that the number of layers corresponding to one of CWs is 2, an embodiment of the present invention may select two ports from 8 ports, including C (8, 2) ═ 28 possibilities; selecting 3 ports from the remaining six ports, including C (6, 3) ═ 20; each indicated by 5bit information.
If RANK is 5, where the number of layers corresponding to one CW is 1, the following two ways may be used to indicate in the embodiment of the present invention:
1. selecting one port from 8 ports, wherein the port comprises 8 possibilities of C (8, 1); selecting 4 ports from the remaining seven ports, including C (7, 4) ═ 36; namely, the indication is respectively carried out through 3bit information and 6bit information;
2. four ports are selected from 8 ports, including C (8, 4) ═ 70 possibilities; selecting 4 ports from the remaining seven ports, including C (4, 1) ═ 4; i.e. indicated by the 6bit information and the 2bit information, respectively.
If RANK is 6, where the number of layers corresponding to one CW is 3, the embodiment of the present invention may:
three ports are selected from 8 ports, including 56 possibilities of C (8, 3); selecting 3 ports from the remaining five ports, including C (5, 3) ═ 10; namely, the indication is respectively carried out through 6bit information and 3bit information;
if RANK is 6, where the number of layers corresponding to one CW is 4, the embodiment of the present invention may:
four ports are selected from 8 ports, including C (8, 4) ═ 70 possibilities; selecting 2 ports from the remaining four ports, including C (4, 2) ═ 6; namely, the indication is respectively carried out through 6bit information and 3bit information;
if RANK is 6, where the number of layers corresponding to one CW is 4, the embodiment of the present invention may:
four ports are selected from 8 ports, including C (8, 4) ═ 70 possibilities; selecting 2 ports from the remaining four ports, including C (4, 2) ═ 6; namely, the indication is respectively carried out through 6bit information and 3bit information;
optionally, before indicating the determined first mapping relationship information to the terminal, the method in the embodiment of the present invention further includes:
information indicating a layer to which the transport block is mapped.
The embodiment of the invention can adopt 1bit information to indicate the layers to which CW1 and CW2 are mapped; for example, indicating CW1 is mapped to 3 layers and CW2 is mapped to 3 layers; after indicating information of a layer to which the transport block is mapped, first mapping relationship information is generated and fed back.
It should be noted that the first mapping relationship information and/or the second mapping relationship information includes a mapping relationship between a selected port and a transmission layer, so that referring to the related art, the terminal may calculate the rank indication and the channel quality indication according to the port selection indication information and the first mapping relationship information.
Compared with the related art, the technical scheme of the application comprises the following steps: configuring port information used in channel information measurement for a terminal; when port selection indication information is configured for channel information measurement with the transmission layer number being a preset numerical value, determining first mapping relation information of a selected port and a transmission layer and/or second mapping relation information of the selected port and a transmission block; and indicating the determined first mapping relation information and/or the second mapping relation information to the terminal. The embodiment of the invention realizes the indication of the mapping relation information of the port and the transmission layer, avoids the transmission of the same transmission block on the port or the layer with larger performance difference and improves the transmission efficiency.
Fig. 2 is a block diagram of a device for implementing information feedback according to an embodiment of the present invention, as shown in fig. 2, including: the device comprises a configuration unit, a determination unit and an indication unit; wherein,
the configuration unit is used for: configuring port information used in channel information measurement for a terminal;
the determination unit is used for: when port selection indication information is configured for channel information measurement with the transmission layer number being a preset numerical value, determining first mapping relation information of a selected port and a transmission layer and/or second mapping relation information of the selected port and a transmission block;
optionally, the determining unit in the embodiment of the present invention is configured to determine first mapping relationship information between the selected port and the transport layer and/or second mapping relationship information between the selected port and the transport block, where the first mapping relationship information includes:
and when the preset value is larger than a preset threshold value, determining first mapping relation information of the selected port and the transmission layer and/or second mapping relation information of the selected port and the transmission block.
The indication unit is used for: and indicating the determined first mapping relation information and/or the second mapping relation information to the terminal.
Optionally, the second mapping relationship information in the embodiment of the present invention includes: information of one or more ports to which the transport block is mapped;
optionally, the first mapping relationship information in the embodiment of the present invention includes: number information of selected ports corresponding to one or more transport layers.
Optionally, the second mapping relationship information in the embodiment of the present invention includes:
and in the two transport blocks, the transport block with the smaller layer number is mapped to the information of all the ports.
Optionally, the first mapping relationship information in the embodiment of the present invention includes:
number information of each selected port corresponding to all transmission layers; or,
and corresponding to the number of the transmission layers with the preset value, and selecting the number information of the ports with the preset value.
Optionally, the indication unit in the embodiment of the present invention is further configured to: and indicating information of a transport layer to which the transport block is mapped to the terminal before indicating the determined mapping relationship information to the terminal.
The embodiment of the invention also provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used for executing the method for realizing the information feedback.
An embodiment of the present invention further provides a terminal, including: a memory and a processor; wherein,
the processor is configured to execute program instructions in the memory;
the program instructions read on the processor to perform the following operations:
configuring port information used in channel information measurement for a terminal;
when port selection indication information is configured for channel information measurement with the transmission layer number being a preset numerical value, determining first mapping relation information of a selected port and a transmission layer and/or second mapping relation information of the selected port and a transmission block;
and indicating the determined first mapping relation information and/or the second mapping relation information to the terminal.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by a program instructing associated hardware (e.g., a processor) to perform the steps, and the program may be stored in a computer readable storage medium, such as a read only memory, a magnetic or optical disk, and the like. Alternatively, all or part of the steps of the above embodiments may be implemented using one or more integrated circuits. Accordingly, each module/unit in the above embodiments may be implemented in hardware, for example, by an integrated circuit to implement its corresponding function, or in software, for example, by a processor executing a program/instruction stored in a memory to implement its corresponding function. The present invention is not limited to any specific form of combination of hardware and software.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (13)
1. A method for information feedback, comprising:
configuring port information used in channel information measurement for a terminal;
when port selection indication information is configured for channel information measurement with the transmission layer number being a preset numerical value, determining first mapping relation information of a selected port and a transmission layer and/or second mapping relation information of the selected port and a transmission block;
indicating information of a transport layer to which a transport block is mapped to a terminal;
and indicating the determined first mapping relation information and/or the second mapping relation information to the terminal.
2. The method of claim 1, further comprising:
and the terminal calculates rank indication and channel quality indication according to the port selection indication information and the first mapping relation information and/or the second mapping relation information.
3. The method according to claim 1 or 2, wherein the determining the first mapping information of the selected port and the transport layer and/or the second mapping information of the selected port and the transport block comprises:
and when the preset value is larger than a preset threshold value, determining first mapping relation information of the selected port and the transmission layer and/or second mapping relation information of the selected port and the transmission block.
4. The method of claim 1,
the second mapping relationship information includes: information of one or more ports to which the transport block is mapped;
the first mapping relationship information includes: number information of selected ports corresponding to one or more transport layers.
5. The method of claim 1, wherein the second mapping relationship information comprises:
and in the two transport blocks, the transport block with the smaller layer number is mapped to the information of all the ports.
6. The method of claim 1, wherein the first mapping relationship information comprises:
number information of each selected port corresponding to all transmission layers; or,
and corresponding to the number of the transmission layers with the preset value, and selecting the number information of the ports with the preset value.
7. An apparatus for information feedback, comprising: the device comprises a configuration unit, a determination unit and an indication unit; wherein,
the configuration unit is used for: configuring port information used in channel information measurement for a terminal;
the determination unit is used for: when port selection indication information is configured for channel information measurement with the transmission layer number being a preset numerical value, determining first mapping relation information of a selected port and a transmission layer and/or second mapping relation information of the selected port and a transmission block;
the indication unit is used for: and indicating information of a transport layer to which the transport block is mapped to the terminal, and indicating the determined first mapping relation information and/or second mapping relation information to the terminal.
8. The apparatus according to claim 7, wherein the determining unit is configured to determine first mapping information of the selected port and the transport layer and/or second mapping information of the selected port and the transport block, and includes:
and when the preset value is larger than a preset threshold value, determining first mapping relation information of the selected port and the transmission layer and/or second mapping relation information of the selected port and the transmission block.
9. The apparatus of claim 7,
the second mapping relationship information includes: information of one or more ports to which the transport block is mapped;
the first mapping relationship information includes: number information of selected ports corresponding to one or more transport layers.
10. The apparatus of claim 7, wherein the second mapping relationship information comprises:
and in the two transport blocks, the transport block with the smaller layer number is mapped to the information of all the ports.
11. The apparatus of claim 7, wherein the first mapping relationship information comprises:
number information of each selected port corresponding to all transmission layers; or,
and corresponding to the number of the transmission layers with the preset value, and selecting the number information of the ports with the preset value.
12. A communication device, comprising: a memory and a processor; wherein,
the processor is configured to execute program instructions in the memory;
the program instructions read on the processor to perform the following operations:
configuring port information used in channel information measurement for a terminal;
when port selection indication information is configured for channel information measurement with the transmission layer number being a preset numerical value, determining first mapping relation information of a selected port and a transmission layer and/or second mapping relation information of the selected port and a transmission block;
indicating information of a transport layer to which a transport block is mapped to a terminal;
and indicating the determined first mapping relation information and/or the second mapping relation information to the terminal.
13. A computer storage medium having computer-executable instructions stored therein which, when executed by a processor, implement the method of any one of claims 1-6.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711227648.2A CN108111264B (en) | 2017-11-29 | 2017-11-29 | Information feedback method and device |
| PCT/CN2018/107416 WO2019105121A1 (en) | 2017-11-29 | 2018-09-25 | Information feedback method and device, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| EP3471307A3 (en) * | 2015-01-19 | 2019-06-12 | QUALCOMM Incorporated | Csi feedback overhead reduction for fd-mimo |
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