CN112019314B - Channel state information prediction method and system under 5G multi-transmission scheme - Google Patents
Channel state information prediction method and system under 5G multi-transmission scheme Download PDFInfo
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- CN112019314B CN112019314B CN202010804981.0A CN202010804981A CN112019314B CN 112019314 B CN112019314 B CN 112019314B CN 202010804981 A CN202010804981 A CN 202010804981A CN 112019314 B CN112019314 B CN 112019314B
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- 230000000153 supplemental effect Effects 0.000 claims description 8
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
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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
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
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Abstract
The invention discloses a channel state information prediction method and a system under a 5G multi-transmission scheme, wherein the method comprises the following steps: determining a current transmission scheme according to the configuration of a network side, and calculating and reporting the CSI according to the current transmission scheme; on the basis of the CSI, the network side carries out configuration indication on the calculation and reporting modes of the supplementary CSI; and according to the configuration instruction, the terminal calculates and reports the CSI according to the corresponding transmission scheme assumption. The invention has the advantages that: the method is simple to realize, and the network side can acquire the CSI information under the conditions of various transmission schemes, so that the network side is assisted to perform more accurate transmission scheme selection and switching. The transmission scheme is better matched with the actual transmission condition, so that the overall network performance is improved.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a channel state information prediction method and system under a 5G multi-transmission scheme.
Background
Currently, in order to improve the utilization efficiency of the edge spectrum, improve the transmission reliability and reduce the transmission delay, a transmission technology of multi-transmission point cooperation is introduced in the NR Rel-16 system. Specifically, a multi-DCI scheme of scheduling a plurality of PDSCHs through a plurality of PDCCHs and a single-DCI scheme of scheduling a single PDSCH through a single PDCCH are included. The M-DCI scheme transmits different PDSCH through different transmission points, so that the dependency on the backhaul link capability between transmission points is low. In the single-DCI scheme, two sets of data layers of the same PDSCH are transmitted through different transmission points, so that a tighter cooperation between the transmission points is required.
A plurality of S-DCI schemes are defined in Rel-16, and can be used for eMBB service and improving the quality of URLLC service. Rel-16 introduces a plurality of new transmission schemes, but does not improve the mechanism for acquiring channel state information correspondingly. In this case, it is difficult for the network side to make a more accurate prediction of the transmission performance that can be obtained under various transmission scheme conditions, and thus it is difficult to make a selection of a transmission scheme.
Disclosure of Invention
The invention aims to provide a channel state information prediction method under a 5G multi-transmission scheme, which solves the problem of accurately and effectively acquiring channel state information under the condition of multiple transmission schemes.
In view of this, the present invention provides a method for predicting channel state information under a 5G multi-transmission scheme, which is characterized by comprising:
determining a current transmission scheme according to the configuration of a network side, and calculating and reporting the CSI according to the current transmission scheme;
on the basis of the CSI, the network side carries out configuration indication on the calculation and reporting modes of the supplementary CSI;
and according to the configuration instruction, the terminal calculates and reports the CSI according to the corresponding transmission scheme assumption.
Further, on the basis of the CSI, the network side performs configuration indication on the calculation and reporting modes of the supplemental CSI, including: the network side specifies one or more supplemental transmission scheme hypotheses.
Further, the supplemental transmission scheme assumption includes: a multi-DCI scheme or an S-DCI scheme.
Further, according to the configuration instruction, the terminal performs calculation and reporting of the CSI according to the corresponding transmission scheme assumption, including:
the transmission scheme is assumed to be: different groups of data are transmitted through different TRPs; the terminal calculates and reports the PMI/RI/CRI for each transmission point and the CQI for each codeword.
Further, according to the configuration instruction, the terminal performs calculation and reporting of the CSI according to the corresponding transmission scheme assumption, including:
the transmission scheme is assumed to be: data corresponding to the same RV version is transmitted discretely through different transmission points, and frequency domain resources used by each transmission point are different; the terminal calculates and reports the PMI/RI/CRI for each transmission point and the CQI for a single codeword.
Further, according to the configuration instruction, the terminal performs calculation and reporting of the CSI according to the corresponding transmission scheme assumption, including:
the transmission scheme is assumed to be: each transmission point transmits an RV version, the two RV versions are aimed at the same transmission block, and the frequency domain resources used by each transmission point are different; the terminal calculates and reports the PMI/RI/CRI for each transmission point and the CQI for a single codeword.
Further, according to the configuration instruction, the terminal performs calculation and reporting of the CSI according to the corresponding transmission scheme assumption, including:
the transmission scheme is assumed to be: in the same slot, each transmission point transmits an RV version, the two RV versions are aimed at the same transmission block, and the time domain resources used by each transmission point are different; the terminal calculates and reports the PMI/RI/CRI for each transmission point and the CQI for a single codeword.
Further, according to the configuration instruction, the terminal performs calculation and reporting of the CSI according to the corresponding transmission scheme assumption, including:
the transmission scheme is assumed to be: and repeatedly sending each RV version of the same transmission block on different slots through different transmission points, and calculating and reporting the PMI/RI/CRI of each transmission point and the CQI of a single codeword by the terminal.
Further, the method further comprises the following steps: and the terminal recommends RV values used by all the transmission points.
Another object of the present invention is to provide a channel state information prediction system under a 5G multi-transmission scheme, which includes:
the determining module is used for determining a current transmission scheme according to the configuration of the network side, and calculating and reporting the CSI according to the current transmission scheme;
the configuration module is used for carrying out configuration indication on the calculation and reporting modes of the supplementary CSI on the basis of the CSI;
and the reporting module is used for calculating and reporting the CSI according to the corresponding transmission scheme assumption by the terminal according to the configuration instruction.
The invention realizes the following remarkable beneficial effects:
the realization is simple, including: determining a current transmission scheme according to the configuration of a network side, and calculating and reporting the CSI according to the current transmission scheme; on the basis of the CSI, the network side carries out configuration indication on the calculation and reporting modes of the supplementary CSI; and according to the configuration instruction, the terminal calculates and reports the CSI according to the corresponding transmission scheme assumption. The network side can acquire the CSI information under the conditions of various transmission schemes, so that the network side is assisted to select and switch the transmission scheme more accurately. The transmission scheme is better matched with the actual transmission condition, so that the overall network performance is improved.
Drawings
Fig. 1 is a flowchart of a channel state information prediction method under a 5G multi-transmission scheme according to the present invention;
fig. 2 is a schematic diagram of an embodiment of a channel state information prediction method under a 5G multi-transmission scheme according to the present invention.
Detailed Description
The advantages and features of the present invention will become more fully apparent from the following description and appended claims, taken in conjunction with the accompanying drawings and detailed description. It should be noted that the drawings are in a very simplified form and are adapted to non-precise proportions, merely for the purpose of facilitating and clearly aiding in the description of embodiments of the invention.
It should be noted that, in order to clearly illustrate the present invention, various embodiments of the present invention are specifically illustrated by the present embodiments to further illustrate different implementations of the present invention, where the various embodiments are listed and not exhaustive. Furthermore, for simplicity of explanation, what has been mentioned in the previous embodiment is often omitted in the latter embodiment, and therefore, what has not been mentioned in the latter embodiment can be referred to the previous embodiment accordingly.
While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and are herein described in detail. It should be understood that the invention is not to be limited to the particular embodiments disclosed, but on the contrary, the invention is to cover all modifications, equivalents, and alternatives falling within the spirit or scope of the invention as defined by the appended claims. The same element numbers may be used throughout the drawings to refer to the same or like parts.
Referring to fig. 1 to 2, the present invention provides a method for predicting channel state information under a 5G multi-transmission scheme, which includes:
step S101, determining a current transmission scheme according to configuration of a network side, and calculating and reporting CSI according to the current transmission scheme;
step S102, on the basis of the CSI, a network side carries out configuration indication on the calculation and reporting modes of the supplementary CSI;
step S103, according to the configuration instruction, the terminal calculates and reports the CSI according to the corresponding transmission scheme assumption.
In one embodiment, on the basis of the CSI, the network side performs configuration indication on the calculation and reporting modes of the supplemental CSI, including: the network side specifies one or more supplemental transmission scheme hypotheses.
In one embodiment, the supplemental transmission scheme assumption includes: a multi-DCI scheme or an S-DCI scheme.
In one embodiment, according to the configuration instruction, the terminal performs calculation and reporting of CSI according to a corresponding transmission scheme assumption, including:
the transmission scheme is assumed to be: different groups of data are transmitted through different TRPs; the terminal calculates and reports the PMI/RI/CRI for each transmission point and the CQI for each codeword.
In one embodiment, according to the configuration instruction, the terminal performs calculation and reporting of CSI according to a corresponding transmission scheme assumption, including:
the transmission scheme is assumed to be: data corresponding to the same RV version is transmitted discretely through different transmission points, and frequency domain resources used by each transmission point are different; the terminal calculates and reports the PMI/RI/CRI for each transmission point and the CQI for a single codeword.
In one embodiment, according to the configuration instruction, the terminal performs calculation and reporting of CSI according to a corresponding transmission scheme assumption, including:
the transmission scheme is assumed to be: each transmission point transmits an RV version, the two RV versions are aimed at the same transmission block, and the frequency domain resources used by each transmission point are different; the terminal calculates and reports the PMI/RI/CRI for each transmission point and the CQI for a single codeword.
In one embodiment, according to the configuration instruction, the terminal performs calculation and reporting of CSI according to a corresponding transmission scheme assumption, including:
the transmission scheme is assumed to be: in the same slot, each transmission point transmits an RV version, the two RV versions are aimed at the same transmission block, and the time domain resources used by each transmission point are different; the terminal calculates and reports the PMI/RI/CRI for each transmission point and the CQI for a single codeword.
In one embodiment, according to the configuration instruction, the terminal performs calculation and reporting of CSI according to a corresponding transmission scheme assumption, including:
the transmission scheme is assumed to be: and repeatedly sending each RV version of the same transmission block on different slots through different transmission points, and calculating and reporting the PMI/RI/CRI of each transmission point and the CQI of a single codeword by the terminal.
In one embodiment, further comprising: and the terminal recommends RV values used by all the transmission points.
Another object of the present invention is to provide a channel state information prediction system under a 5G multi-transmission scheme, including:
the determining module is used for determining a current transmission scheme according to the configuration of the network side, and calculating and reporting the CSI according to the current transmission scheme;
the configuration module is used for carrying out configuration indication on the calculation and reporting modes of the supplementary CSI on the basis of the CSI;
and the reporting module is used for calculating and reporting the CSI according to the corresponding transmission scheme assumption by the terminal according to the configuration instruction.
In one embodiment, the S-DCI transmission scheme includes:
SDM scheme (scheme 1 a): different groups of data are transmitted through different TRPs;
FDM scheme a (scheme 2 a): data corresponding to the same RV version is transmitted discretely through different transmission points, and frequency domain resources used by each transmission point are different;
FDM scheme B (scheme 2B): each transmission point transmits an RV version, the two RV versions are aimed at the same transmission block, and the frequency domain resources used by each transmission point are different;
TDM scheme 1 (scheme 3): in the same slot, each transmission point transmits an RV version, the two RV versions are aimed at the same transmission block, and the time domain resources used by each transmission point are different;
TDM scheme 2 (scheme 4): and repeatedly transmitting each RV version of the same transmission block on different slots through different transmission points.
As a specific embodiment, the method comprises the following specific steps:
1) According to the configuration of the network side, determining the current transmission scheme, and calculating and reporting the CSI such as PMI/RI/CQI/CRI according to the current transmission scheme.
2) On the basis of the CSI, the network side carries out configuration indication on the calculation and reporting modes of the supplementary CSI. The implementation method comprises
Mode 1: the network side designates one or more supplementary transmission scheme assumptions, and requires the terminal to calculate and report the CSI according to the transmission schemes. For example, the assumed transmission scheme may be several transmission schemes described above, such as 1a, 2b, 3 or 4 in the M-DCI scheme or the S-DCI scheme;
mode 2: the network side designates one or several supplementary transmission scheme assumptions, and requires the terminal to calculate and report CSI (the part that the terminal must calculate and report) according to these several transmission schemes. In addition to this, the process can be performed,
mode 2-1: the default terminal autonomously selects other transmission scheme assumptions or transmission scheme assumptions to calculate and report the CSI;
mode 2-2: indicating other transmission schemes for the terminal, wherein the terminal is required to select one or more transmission schemes from the transmission schemes to calculate and report the CSI (the terminal is required to select autonomously in a defined transmission scheme range outside the CSI which has to be calculated and reported);
3) The terminal calculates and reports the CSI according to the corresponding transmission scheme hypothesis according to the configuration instruction;
the terminal measures the CSI-RS according to the configuration instruction of the network to acquire a channel transmission matrix H;
the terminal calculates and reports the CSI based on the measurement of the CSI-RS and the transmission scheme assumption determined in the second step;
as a specific embodiment, if the assumed transmission scheme is 1a, the terminal should assume that different data packets are transmitted through different transmission points in the transmission process when calculating CSI. In this case, the terminal needs to calculate and report PMI/RI/CRI for each transmission point and CQI for each codeword.
As a specific embodiment, if the assumed transmission scheme is 2a, the terminal should assume that data corresponding to the same RV version is transmitted through different transmission points in a dispersed manner during the transmission process when calculating CSI, and frequency domain resources used by each transmission point are different. In this case, the terminal needs to calculate and report the PMI/RI/CRI for each transmission point and the CQI for a single codeword
As a specific embodiment, if the assumed transmission scheme is 2b, the terminal should assume that each transmission point transmits one RV version when calculating CSI, both of which are for the same transport block, and the frequency domain resources used by each transmission point are different. In this case, the terminal needs to calculate and report PMI/RI/CRI for each transmission point and CQI for a single codeword. Meanwhile, the terminal can also recommend RV values used by all transmission points
As a specific embodiment, if the assumed transmission scheme is 3, the terminal should assume that, when calculating CSI, each transmission point transmits an RV version in the same slot, where both RV versions are for the same transport block, and the time domain resources used by each transmission point are different. In this case, the terminal needs to calculate and report PMI/RI/CRI for each transmission point and CQI for a single codeword. Meanwhile, the terminal can also recommend RV values used by all transmission points
As a specific embodiment, if the assumed transmission scheme is 4, the terminal should assume that each RV version of the same transport block is repeatedly transmitted on different slots through different transmission points when calculating CSI. In this case, the terminal needs to calculate and report PMI/RI/CRI for each transmission point and CQI for a single codeword. Meanwhile, the terminal can also recommend RV values used by all transmission points.
The invention realizes the following remarkable beneficial effects:
the realization is simple, including: determining a current transmission scheme according to the configuration of a network side, and calculating and reporting the CSI according to the current transmission scheme; on the basis of the CSI, the network side carries out configuration indication on the calculation and reporting modes of the supplementary CSI; and according to the configuration instruction, the terminal calculates and reports the CSI according to the corresponding transmission scheme assumption. The network side can acquire the CSI information under the conditions of various transmission schemes, so that the network side is assisted to select and switch the transmission scheme more accurately. The transmission scheme is better matched with the actual transmission condition, so that the overall network performance is improved.
Any other suitable modification may also be made according to the technical solution and the idea of the invention. All such alternatives, modifications and improvements will readily occur to those skilled in the art and are intended to be within the scope of the invention as defined in the appended claims.
Claims (10)
1. A method for predicting channel state information in a 5G multi-transmission scheme, comprising:
determining a current transmission scheme according to the configuration of a network side, and calculating and reporting the CSI according to the current transmission scheme;
on the basis of the CSI, the network side carries out configuration indication on the calculation and reporting modes of the supplementary CSI;
according to the configuration instruction, the terminal calculates and reports the CSI according to the corresponding transmission scheme assumption;
the calculating and reporting the CSI according to the current transmission scheme includes:
the terminal calculates and reports the CSI according to a complementary transmission scheme configured by a network side and used for reporting the CSI;
the calculating and reporting the CSI according to the current transmission scheme further includes:
the terminal autonomously selects one or more other transmission schemes to calculate and report the CSI according to the supplementary transmission scheme configured by the network side;
before the terminal autonomously selects one or more other transmission schemes to perform CSI calculation and reporting, the method further comprises:
inquiring whether the network side allows the terminal to autonomously select a transmission scheme of the terminal for CSI calculation and reporting outside the configured supplementary scheme.
2. The method for predicting channel state information under a 5G multi-transmission scheme according to claim 1, wherein, based on the CSI, the network side performs configuration indication on a calculation and reporting mode of supplemental CSI, including: the network side specifies one or more supplemental transmission scheme hypotheses.
3. The method for predicting channel state information under a 5G multi-transmission scheme as claimed in claim 2, wherein the supplementary transmission scheme hypothesis includes: a multi-DCI scheme or an S-DCI scheme.
4. The method for predicting channel state information under a 5G multi-transmission scheme according to claim 1, wherein according to the configuration indication, the terminal performs calculation and reporting of CSI according to a corresponding transmission scheme hypothesis, including:
the transmission scheme is assumed to be: different groups of data are transmitted through different TRPs; the terminal calculates and reports the PMI/RI/CRI for each transmission point and the CQI for each codeword.
5. The method for predicting channel state information under a 5G multi-transmission scheme according to claim 1, wherein according to the configuration indication, the terminal performs calculation and reporting of CSI according to a corresponding transmission scheme hypothesis, including:
the transmission scheme is assumed to be: data corresponding to the same RV version is transmitted discretely through different transmission points, and frequency domain resources used by each transmission point are different; the terminal calculates and reports the PMI/RI/CRI for each transmission point and the CQI for a single codeword.
6. The method for predicting channel state information under a 5G multi-transmission scheme according to claim 1, wherein according to the configuration indication, the terminal performs calculation and reporting of CSI according to a corresponding transmission scheme hypothesis, including:
the transmission scheme is assumed to be: each transmission point transmits an RV version, the two RV versions are aimed at the same transmission block, and the frequency domain resources used by each transmission point are different; the terminal calculates and reports the PMI/RI/CRI for each transmission point and the CQI for a single codeword.
7. The method for predicting channel state information under a 5G multi-transmission scheme according to claim 6, wherein according to the configuration indication, the terminal performs CSI calculation and reporting according to a corresponding transmission scheme hypothesis, including:
the transmission scheme is assumed to be: in the same slot, each transmission point transmits an RV version, the two RV versions are aimed at the same transmission block, and the time domain resources used by each transmission point are different; the terminal calculates and reports the PMI/RI/CRI for each transmission point and the CQI for a single codeword.
8. The method for predicting channel state information under a 5G multi-transmission scheme according to claim 1, wherein according to the configuration indication, the terminal performs calculation and reporting of CSI according to a corresponding transmission scheme hypothesis, including:
the transmission scheme is assumed to be: and repeatedly sending each RV version of the same transmission block on different slots through different transmission points, and calculating and reporting the PMI/RI/CRI of each transmission point and the CQI of a single codeword by the terminal.
9. The method for predicting channel state information in a 5G multi-transmission scheme according to any one of claims 6 to 8, further comprising: and the terminal recommends RV values used by all the transmission points.
10. A system for predicting channel state information in a 5G multi-transmission scheme, comprising:
the determining module is used for determining a current transmission scheme according to the configuration of the network side, and calculating and reporting the CSI according to the current transmission scheme;
the determining module is specifically configured to:
the terminal calculates and reports the CSI according to a complementary transmission scheme configured by a network side and used for reporting the CSI;
the determining module is further specifically configured to:
the terminal autonomously selects one or more other transmission schemes to calculate and report the CSI according to the supplementary transmission scheme configured by the network side;
the determining module is further specifically configured to:
inquiring whether the network side allows the terminal to autonomously select a transmission scheme of the terminal for CSI calculation and reporting outside the configured supplementary scheme;
the configuration module is used for carrying out configuration indication on the calculation and reporting modes of the supplementary CSI on the basis of the CSI;
and the reporting module is used for calculating and reporting the CSI according to the corresponding transmission scheme assumption by the terminal according to the configuration instruction.
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| CN108809374B (en) * | 2017-05-05 | 2021-08-13 | 华为技术有限公司 | Data transmission method, terminal equipment and network equipment |
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