CN112953606A - Method and equipment for determining MIMO (multiple input multiple output) layer number - Google Patents
Method and equipment for determining MIMO (multiple input multiple output) layer number Download PDFInfo
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- CN112953606A CN112953606A CN202110124205.0A CN202110124205A CN112953606A CN 112953606 A CN112953606 A CN 112953606A CN 202110124205 A CN202110124205 A CN 202110124205A CN 112953606 A CN112953606 A CN 112953606A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- 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
- H04B7/0413—MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- 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
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The invention discloses a method and a system for processing MIMO layer number, comprising the following steps: the terminal transmits a first message to the base station, wherein the first message includes the SRS antenna switching capability supported by the terminal 100, and the first message may further include the retractable SRS antenna switching capability supported by the terminal; when configuring/reconfiguring the number of MIMO layers for the terminal, the base station may correspondingly configure SRS resources for antenna port conversion for the terminal by referring to the retroversion SRS antenna conversion capability supported by the terminal in the first message; the terminal does not expect to receive the DMRS port number indicated by the DCI format1_1, wherein the DMRS port number indicated by the DCI format1_1 is not matched with the maximum downlink MIMO layer number indicated by the network equipment; or, if the number of DMRS ports indicated by the DCI format1_1 received by the terminal does not match the maximum number of downlink MIMO layers indicated by the network device, not receiving the downlink data scheduled by the DCI format1_ 1. The terminal behavior is defined aiming at the condition that the maximum downlink MIMO layer number indicated by the network side conflicts and the condition that the uplink transmission layer number or the DMRS port indicated by the network side conflicts with the maximum uplink MIMO layer number indicated by the network side, so that the processing flow of the terminal can be perfected, and the reliability of communication is ensured.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a method and a system for processing Multiple-Input Multiple-Output (MIMO) layer number.
Background
When a network device (e.g., a base station) needs to be used, for example, when a user equipment UE is used for too long or has too large load, the heat of the UE may increase, the UE may have an overheating problem (for example, the heat of the UE is greater than a certain threshold), or the UE may reconfigure the MIMO layer number of the MIMO system for the UE when the UE desires to reduce the transmission power, for example, the MIMO layer number of the UE is reduced to reduce the transmission power of the UE, so as to solve the overheating problem.
After the network device reduces the number of MIMO layers for the UE, if the network device does not reallocate the sounding reference signal resources for user antenna switching, the problem of capability mismatch occurs during antenna port switching. Moreover, if the network side conflicts with the maximum downlink MIMO layer number indicated by the network side through the DMRS port, for example, the DMRS port number is greater than the maximum downlink MIMO layer number, how to define the behavior of the terminal and how to conflict with the maximum uplink MIMO layer number indicated by the network side through the uplink transmission layer number or the DMRS port is an urgent problem to be solved. Moreover, after the network device reduces the MIMO layer number for the UE, if the network device does not reallocate Sounding Reference Signals (SRS) resources for user antenna switching correspondingly, when performing antenna port switching, a problem of capability mismatch may occur. In addition, the network side indicates the number of layers for uplink transmission through the Precoding information and number of layers (layers) field included in the DCI format 0_1, and indicates the DMRS port for uplink transmission through the antenna port field. If the number of uplink transmission layers or DMRS ports indicated by the network side through the DCI format 0_1 conflicts with the maximum number of uplink MIMO layers indicated by the network side, for example, the number of DMRS ports indicated by the DCI format 0_1 is greater than the maximum number of uplink MIMO layers, or the number of uplink transmission layers indicated by the DCI format 0_1 is greater than the maximum number of uplink MIMO layers, how to define the behavior of the terminal is an urgent problem to be solved.
Disclosure of Invention
The purpose of the invention is realized by the following technical scheme:
a processing method of MIMO layer number, the execution subject of the processing method is a terminal, specifically comprising:
step 101: the terminal sends a first message to the base station. The first message includes SRS (sounding reference signals) antenna switching capabilities supported by the terminal 100, wherein the first message may further include fallback SRS antenna switching capabilities supported by the terminal;
the terminal reports the SRS antenna conversion capability supported by the terminal and the retroversion SRS antenna conversion capability supported by the terminal to the base station through the first message, so that the base station can reconfigure SRS resources for antenna port conversion for the terminal according to the retroversion SRS antenna conversion capability supported by the terminal when the terminal reconfigures the MIMO layer number;
step 102: receiving an SRS resource configured/reconfigured for the terminal by the base station according to the retroversion SRS antenna conversion capability supported by the terminal, and when the base station configures/reconfigures the MIMO layer number for the terminal, correspondingly configuring the SRS resource for the antenna port conversion for the terminal by referring to the retroversion SRS antenna conversion capability supported by the terminal in the first message;
when configuring/reconfiguring the number of MIMO layers for the terminal, the base station may correspondingly configure SRS resources for antenna port conversion for the terminal by referring to the retroversion SRS antenna conversion capability supported by the terminal in the first message;
step 103: the uplink transmission layer number indicated by the DCI format1_1 received by the terminal is not matched with the maximum downlink MIMO layer number indicated by the network equipment; or, if the number of DMRS ports indicated by the DCI format1_1 received by the terminal does not match the maximum number of downlink MIMO layers indicated by the network device, not receiving the downlink data scheduled by the DCI format1_ 1.
Further, the fallback SRS antenna switching capability supported by the terminal is used for the base station to reconfigure the SRS resource for antenna port switching for the terminal, and is triggered by the following events: the base station receives a second message sent by the terminal, where the second message may include the number of MIMO layers that the terminal expects the base station to configure for the terminal or the maximum number of MIMO layers that the terminal expects to configure.
Further, the second message is an auxiliary information message.
Further, the first message may further include a first MIMO layer number supported by the terminal; the retrogradable SRS antenna switching capability corresponds to the second MIMO layer number. The number of second MIMO layers is less than or equal to the number of first MIMO layers.
A processing system of MIMO layer number, the executive body of the processing system is a terminal, which specifically comprises:
a sending module: the terminal sends a first message to the base station. The first message includes SRS antenna switching capabilities supported by the terminal 100, wherein the first message may further include a retractable SRS antenna switching capability supported by the terminal;
the terminal reports the SRS antenna conversion capability supported by the terminal and the retroversion SRS antenna conversion capability supported by the terminal to the base station through the first message, so that the base station can reconfigure SRS resources for antenna port conversion for the terminal according to the retroversion SRS antenna conversion capability supported by the terminal when the terminal reconfigures the MIMO layer number;
a configuration module: receiving an SRS resource for configuring/reconfiguring the terminal with SRS resources for antenna port switching by the base station according to the retractable SRS antenna switching capability supported by the terminal, and when the base station configures/reconfigures the number of MIMO layers for the terminal, correspondingly configuring, for the terminal, an SRS resource matching module for antenna port switching with reference to the retractable SRS antenna switching capability supported by the terminal in the first message:
when configuring/reconfiguring the number of MIMO layers for the terminal, the base station may correspondingly configure SRS resources for antenna port conversion for the terminal by referring to the retroversion SRS antenna conversion capability supported by the terminal in the first message;
a matching module: the uplink transmission layer number indicated by the DCI format1_1 received by the terminal is not matched with the maximum downlink MIMO layer number indicated by the network equipment; or, if the number of DMRS ports indicated by the DCI format1_1 received by the terminal does not match the maximum number of downlink MIMO layers indicated by the network device, not receiving the downlink data scheduled by the DCI format1_ 1.
Further, the fallback SRS antenna switching capability supported by the terminal is used for the base station to reconfigure the SRS resource for antenna port switching for the terminal, and is triggered by the following events: the base station receives a second message sent by the terminal, where the second message may include the number of MIMO layers that the terminal expects the base station to configure for the terminal or the maximum number of MIMO layers that the terminal expects to configure.
Further, the second message is an auxiliary information message.
Further, the first message may further include a first MIMO layer number supported by the terminal; the retrogradable SRS antenna switching capability corresponds to the second MIMO layer number. The number of second MIMO layers is less than or equal to the number of first MIMO layers.
Due to the adoption of the technical scheme, the invention can achieve the following beneficial effects:
the user equipment reports each type of the retroversion SRS antenna conversion capability which can be supported by the user equipment to the network equipment, so that the network equipment knows each type of the retroversion SRS antenna conversion capability of the user equipment, and can configure corresponding SRS resources for the user equipment when configuring MIMO layers for the user equipment. The terminal behavior is defined aiming at the condition that the maximum downlink MIMO layer number indicated by the network side conflicts and the condition that the uplink transmission layer number or the DMRS port indicated by the network side conflicts with the maximum uplink MIMO layer number indicated by the network side, so that the processing flow of the terminal can be perfected, and the reliability of communication is ensured.
Drawings
Fig. 1 is a processing method of MIMO layer number exemplarily shown according to the present disclosure;
fig. 2 is a processing system of MIMO layer numbers illustratively shown in accordance with the present disclosure.
These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
The embodiment of the application provides a method for reporting capacity, which is used in a process that network equipment configures SRS resources for User Equipment (UE). Specifically, the method is applied to the process of configuring the corresponding SRS resource when the network device configures the MIMO layer number or the antenna port number for the UE. When configuring the MIMO layer number or the antenna port number for the UE, the network device does not know the SRS antenna conversion capability corresponding to the capability that the configured MIMO layer number or the antenna port number can support, and therefore does not configure the SRS resource supporting the SRS antenna conversion capability corresponding to the SRS antenna conversion capability for the UE.
The method of the embodiment of the application can be applied to the process that the network equipment actively configures the SRS resource for the UE. After the UE first accesses the network device, the network device may actively configure SRS resources for SRS antenna port conversion for the UE. For another example, the method of the embodiment of the present application may be applied to a process in which a network device configures an SRS resource for a UE in response to a request of the UE. The UE may request the network device to reconfigure the MIMO layer number or the antenna port number and the corresponding reconfigured SRS resource for the UE when the load is too large and the power is insufficient or the UE desires to reduce the power for various reasons. In the embodiment of the present application, the condition or the opportunity for triggering the network device to configure the SRS resource for the UE is not limited.
Hereinafter, terms that may appear in the embodiments of the present application are explained.
SRS antenna switching capability: SRS transmission port transition patterns that the UE can support. If the SRS antenna switching capability indicated by the UE is xTyR, it indicates that the UE can transmit SRS on x antenna ports through y antennas. y corresponds to all or a subset of the receive antennas of the UE.
Fallback SRS antenna switching capability: the UE backs off SRS transmission port transition patterns that may be supported. If the fallback-able SRS antenna switching capability indicated by the UE is xTyR, it indicates that the UE can transmit SRS on x antenna ports through y antennas. y corresponds to all or a subset of the receive antennas of the UE.
Maximum number of MIMO layers: the maximum number of spatial multiplexing layers that the UE can support.
Maximum number of antenna ports: the maximum number of antenna ports that the UE can support.
SRS resource: time domain resources and/or frequency domain resources for transmitting the SRS.
The embodiment of the invention provides a method for processing MIMO layer number, wherein the execution main body of the method is a terminal, and the method comprises the following specific steps:
step 101: the terminal sends a first message to the base station. The first message includes SRS antenna switching capabilities supported by the terminal 100, wherein the first message may further include a retractable SRS antenna switching capability supported by the terminal.
The terminal reports the SRS antenna conversion capability supported by the terminal and the retroversion SRS antenna conversion capability supported by the terminal to the base station through the first message, so that the base station can reconfigure the SRS resource for antenna port conversion for the terminal according to the retroversion SRS antenna conversion capability supported by the terminal when the terminal reconfigures the MIMO layer number.
Step 102: receiving an SRS resource configured/reconfigured for the terminal by the base station according to the retroversion SRS antenna conversion capability supported by the terminal, and when the base station configures/reconfigures the MIMO layer number for the terminal, correspondingly configuring the SRS resource for the antenna port conversion for the terminal by referring to the retroversion SRS antenna conversion capability supported by the terminal in the first message;
when configuring/reconfiguring the number of MIMO layers for the terminal, the base station may correspondingly configure SRS resources for antenna port switching for the terminal with reference to the fallback SRS antenna switching capability supported by the terminal in the first message.
In one possible implementation manner, the fallback SRS antenna switching capability supported by the terminal is used for the base station to reconfigure the SRS resource for antenna port switching for the terminal, and is triggered by the following events: the base station receives a second message sent by the terminal, where the second message may include the number of MIMO layers that the terminal expects the base station to configure for the terminal or the maximum number of MIMO layers that the terminal expects to configure.
In one possible implementation, the second message is an assistance information message.
In a possible implementation manner, the terminal determines the reporting of the fallback SRS antenna switching capability according to the hardware implementation and/or the current SRS resource configuration. For example, the terminal's current SRS antenna switching capability is configured as 2T4R, i.e. the terminal is able to transmit SRS on 2 antenna ports through 4 antennas; accordingly, the terminal may support a retractable SRS antenna switching capability of 1T4R and/or 1T2R, i.e., the SRS antenna switching capability of the terminal is to transmit SRS on 1 antenna port through 4 antennas and/or the SRS antenna switching capability of the terminal is to transmit SRS on 1 antenna port through 2 antennas.
In another possible implementation manner, the first message may further include a first MIMO layer number supported by the terminal; the retrogradable SRS antenna switching capability corresponds to the second MIMO layer number. The number of second MIMO layers is less than or equal to the number of first MIMO layers.
Step 103: the uplink transmission layer number indicated by the DCI format1_1 received by the terminal is not matched with the maximum downlink MIMO layer number indicated by the network equipment; or, if the number of DMRS ports indicated by the DCI format1_1 received by the terminal does not match the maximum number of downlink MIMO layers indicated by the network device, not receiving the downlink data scheduled by the DCI format1_ 1.
The embodiment of the invention provides a processing system of MIMO layer number, the execution main body of the processing system is a terminal, which specifically comprises:
a sending module: the terminal sends a first message to the base station. The first message includes SRS antenna switching capabilities supported by the terminal 100, wherein the first message may further include a retractable SRS antenna switching capability supported by the terminal.
The terminal reports the SRS antenna conversion capability supported by the terminal and the retroversion SRS antenna conversion capability supported by the terminal to the base station through the first message, so that the base station can reconfigure the SRS resource for antenna port conversion for the terminal according to the retroversion SRS antenna conversion capability supported by the terminal when the terminal reconfigures the MIMO layer number.
A configuration module: receiving an SRS resource configured/reconfigured for the terminal by the base station according to the retroversion SRS antenna conversion capability supported by the terminal, and when the base station configures/reconfigures the MIMO layer number for the terminal, correspondingly configuring the SRS resource for the antenna port conversion for the terminal by referring to the retroversion SRS antenna conversion capability supported by the terminal in the first message;
when configuring/reconfiguring the number of MIMO layers for the terminal, the base station may correspondingly configure SRS resources for antenna port switching for the terminal with reference to the fallback SRS antenna switching capability supported by the terminal in the first message.
In one possible implementation manner, the fallback SRS antenna switching capability supported by the terminal is used for the base station to reconfigure the SRS resource for antenna port switching for the terminal, and is triggered by the following events: the base station receives a second message sent by the terminal, where the second message may include the number of MIMO layers that the terminal expects the base station to configure for the terminal or the maximum number of MIMO layers that the terminal expects to configure.
In one possible implementation, the second message is an assistance information message.
In a possible implementation manner, the terminal determines the reporting of the fallback SRS antenna switching capability according to the hardware implementation and/or the current SRS resource configuration. For example, the terminal's current SRS antenna switching capability is configured as 2T4R, i.e. the terminal is able to transmit SRS on 2 antenna ports through 4 antennas; accordingly, the terminal may support a retractable SRS antenna switching capability of 1T4R and/or 1T2R, i.e., the SRS antenna switching capability of the terminal is to transmit SRS on 1 antenna port through 4 antennas and/or the SRS antenna switching capability of the terminal is to transmit SRS on 1 antenna port through 2 antennas.
In another possible implementation manner, the first message may further include a first MIMO layer number supported by the terminal; the retrogradable SRS antenna switching capability corresponds to the second MIMO layer number. The number of second MIMO layers is less than or equal to the number of first MIMO layers.
A matching module: the uplink transmission layer number indicated by the DCI format1_1 received by the terminal is not matched with the maximum downlink MIMO layer number indicated by the network equipment; or, if the number of DMRS ports indicated by the DCI format1_1 received by the terminal does not match the maximum number of downlink MIMO layers indicated by the network device, not receiving the downlink data scheduled by the DCI format1_ 1.
In some embodiments, the step of determining that the number of DMRS ports indicated by the DCI format1_1 does not match the maximum number of downlink MIMO layers indicated by the network device includes: the number of DMRS ports indicated by the DCI format1_1 is greater than the maximum number of downlink MIMO layers indicated by the network equipment. Illustratively, the number (3) of DMRS ports indicated by the DCI format1_1 is greater than the maximum number of downlink MIMO layers (2).
In the embodiment of the invention, aiming at the condition that the DMRS port indicated by the DCI format1_1 at the network side conflicts with the maximum downlink MIMO layer number indicated by the network side, the behavior of the terminal is defined, the processing flow of the terminal is perfected, and the reliability of communication is ensured.
All of the above description is only an embodiment of the present invention, and the scope of protection of the present invention is not limited thereto. Any changes or substitutions may be readily made by those skilled in the art. Therefore, the protection scope of the present invention should be defined by the claims.
Claims (8)
1. A processing method of MIMO layer number, the execution subject of the processing method is a terminal, specifically comprising:
step 101: a terminal sends a first message to a base station, wherein the first message comprises Sounding Reference Signal (SRS) antenna switching capability supported by the terminal 100, and the first message further comprises retractable SRS antenna switching capability supported by the terminal;
step 102: receiving an SRS resource configured/reconfigured for the terminal by the base station according to the retroversion SRS antenna conversion capability supported by the terminal, and when the base station configures/reconfigures the MIMO layer number for the terminal, correspondingly configuring the SRS resource for the antenna port conversion for the terminal by referring to the retroversion SRS antenna conversion capability supported by the terminal in the first message;
step 103: the number of uplink transmission layers indicated by the DCI format1_1 received by the terminal is not matched with the maximum number of downlink MIMO layers indicated by the network equipment; or, if the number of DMRS ports indicated by the DCI format1_1 received by the terminal does not match the maximum number of downlink MIMO layers indicated by the network device, not receiving the downlink data scheduled by the DCI format1_ 1.
2. The method of claim 1, wherein the fallback SRS antenna switching capability supported by the terminal for the base station to reconfigure the SRS resources for antenna port switching for the terminal is triggered by the following events: and the base station receives a second message sent by the terminal, wherein the second message comprises the MIMO layer number expected to be configured for the terminal by the terminal and the maximum MIMO layer number expected to be configured by the base station.
3. The method of claim 2, wherein the second message is a secondary information message.
4. The method of claim 2, wherein the first message further includes a first number of MIMO layers supported by the terminal; the retrogradable SRS antenna switching capability corresponds to a second MIMO layer number that is less than or equal to the first MIMO layer number.
5. A processing system of MIMO layer number, the executive body of the processing system is a terminal, which specifically comprises:
a sending module: the terminal sends a first message to the base station. The first message includes SRS antenna switching capability supported by the terminal 100, wherein the first message further includes a retractable SRS antenna switching capability supported by the terminal;
a configuration module: receiving an SRS resource for configuring/reconfiguring the terminal with SRS resources for antenna port switching by the base station according to the retractable SRS antenna switching capability supported by the terminal, and when the base station configures/reconfigures the number of MIMO layers for the terminal, correspondingly configuring, for the terminal, an SRS resource matching module for antenna port switching with reference to the retractable SRS antenna switching capability supported by the terminal in the first message:
a matching module: the uplink transmission layer number indicated by the DCI format1_1 received by the terminal is not matched with the maximum downlink MIMO layer number indicated by the network equipment; or, if the number of DMRS ports indicated by the dcifomat 1_1 received by the terminal does not match the maximum number of downlink MIMO layers indicated by the network device, not receiving the downlink data scheduled by the dcifomat 1_ 1.
6. The system of claim 5, wherein the fallback SRS antenna switching capability supported by the terminal for the base station to reconfigure the SRS resources for antenna port switching for the terminal is triggered by the following events: and the base station receives a second message sent by the terminal, wherein the second message comprises the MIMO layer number expected to be configured for the terminal by the terminal and the maximum MIMO layer number expected to be configured by the base station.
7. The system of claim 6, wherein the second message is an assistance information message.
8. The system of claim 5, wherein the first message further includes a first number of MIMO layers supported by the terminal; the retrogradable SRS antenna switching capability corresponds to the second MIMO layer number. The number of second MIMO layers is less than or equal to the number of first MIMO layers.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110124205.0A CN112953606A (en) | 2021-01-28 | 2021-01-28 | Method and equipment for determining MIMO (multiple input multiple output) layer number |
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| CN202110124205.0A CN112953606A (en) | 2021-01-28 | 2021-01-28 | Method and equipment for determining MIMO (multiple input multiple output) layer number |
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| CN113938923A (en) * | 2021-09-24 | 2022-01-14 | 山东浪潮科学研究院有限公司 | MIMO scheduling method in NR system |
| CN114222357A (en) * | 2021-12-15 | 2022-03-22 | 中国电信股份有限公司 | Terminal device, power saving method, non-transitory storage medium, and program product |
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| WO2023039837A1 (en) * | 2021-09-17 | 2023-03-23 | 北京小米移动软件有限公司 | Method and device for adjusting multiple-input multiple output (mimo) transmission layer number of terminal |
| WO2023050153A1 (en) * | 2021-09-29 | 2023-04-06 | 北京小米移动软件有限公司 | Reporting method and apparatus, and user equipment, network-side device and storage medium |
| WO2023071661A1 (en) * | 2021-10-30 | 2023-05-04 | 华为技术有限公司 | Communication method, apparatus and system |
| CN116567789A (en) * | 2023-07-03 | 2023-08-08 | 深圳简谱技术有限公司 | Scheduling method and device between base station and terminal |
| WO2024067357A1 (en) * | 2022-09-27 | 2024-04-04 | 维沃移动通信有限公司 | Data transmission method and apparatus, and user equipment and network-side device |
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| WO2023050153A1 (en) * | 2021-09-29 | 2023-04-06 | 北京小米移动软件有限公司 | Reporting method and apparatus, and user equipment, network-side device and storage medium |
| WO2023071661A1 (en) * | 2021-10-30 | 2023-05-04 | 华为技术有限公司 | Communication method, apparatus and system |
| CN114222357A (en) * | 2021-12-15 | 2022-03-22 | 中国电信股份有限公司 | Terminal device, power saving method, non-transitory storage medium, and program product |
| WO2024067357A1 (en) * | 2022-09-27 | 2024-04-04 | 维沃移动通信有限公司 | Data transmission method and apparatus, and user equipment and network-side device |
| CN116567789A (en) * | 2023-07-03 | 2023-08-08 | 深圳简谱技术有限公司 | Scheduling method and device between base station and terminal |
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