WO2024000526A1

WO2024000526A1 - Precoding method and apparatus

Info

Publication number: WO2024000526A1
Application number: PCT/CN2022/103161
Authority: WO
Inventors: 池连刚; 杨立
Original assignee: 北京小米移动软件有限公司
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2024-01-04

Abstract

The present application provides a precoding method and apparatus, and relates to the technical field of communication. By applying the present precoding method, a first network device can determine channel transmission information of a second network device and send the channel transmission information to the second network device. The present application can simplify the precoding process of RIS or relay, thereby improving precoding efficiency.

Description

Precoding method and device

Technical field

The present application relates to the field of communication technology, and in particular to a precoding method and device.

Background technique

In RIS (Reconfigurable intelligent surface) or relay-assisted communication systems, the base station does not directly communicate with the terminal UE, but reflects or forwards the signal to the UE through RIS or relays. Therefore, in order to implement RIS or The relay's reflection or forwarding function of signals requires precoding of the RIS or relay.

Currently, when precoding RIS or relays, it is necessary to jointly design with the precoding at the base station. However, in the joint design process, it is necessary to use corresponding algorithms to continuously iterate to determine the phase shift of each unit on the RIS, thereby increasing the complexity of precoding, resulting in low precoding efficiency.

Contents of the invention

This application proposes a precoding method and device, which are mainly capable of simplifying the precoding process of RIS or relay and improving precoding efficiency.

A first aspect embodiment of the present application provides a precoding method, applied to a first network device. The method includes: determining channel transmission information of a second network device; and sending the channel transmission information to the second network device. .

In some embodiments of the present application, the channel transmission information includes precoding information or beam information of the downlink channel, and determining the channel transmission information of the second network device includes:

Receive precoding matrix indication information or beam measurement results for the second network device reported by the terminal UE;

Determine the precoding information or beam information of the downlink channel of the second network device according to the reported precoding matrix indication information or beam measurement results;

The sending of the channel transmission information to the second network device includes:

Send the precoding information or beam information of the downlink channel to the second network device.

In some embodiments of the present application, determining the precoding information or beam information of the downlink channel of the second network device based on the precoding matrix indication information or beam measurement results includes:

When the reported is precoding indication information PMI, determine the precoding information or beam information of the downlink channel of the second network device according to the PMI reported by the UE;

When the reported is a beam measurement result, the precoding information or beam information of the downlink channel of the second network device is determined according to the beam measurement result reported by the UE.

In some embodiments of the present application, when the second network device is an RIS, the precoding information of the downlink channel of the second network device is determined based on the reported precoding matrix indication information or beam measurement results. include:

In response to the PMI reported by the UE, determine the precoding information used in downlink reflection or transmission of the RIS according to the PMI reported by the UE;

In response to the beam measurement result reported by the UE, the beam information used in downlink reflection or transmission of the RIS is determined based on the beam measurement result reported by the UE.

In some embodiments of the present application, when the second network device is a relay, the precoding information or beam measurement results of the downlink channel of the second network device are determined based on the precoding matrix indication information or beam measurement results. Beam information includes:

In response to the PMI reported by the UE, determine the precoding information used by the relay for downlink forwarding according to the PMI reported by the UE;

In response to the beam measurement result reported by the UE, the beam information used by the relay for downlink forwarding is determined based on the beam measurement result reported by the UE.

In some embodiments of the present application, the channel transmission information also includes precoding information or beam information of the uplink channel, and determining the channel transmission information of the second network device includes:

Measure the uplink channel and determine the precoding information or beam information of the uplink channel of the second network device;

Send the precoding information or beam information of the uplink channel to the second network device.

In some embodiments of the present application, measuring the uplink channel and determining the precoding information or beam information of the uplink channel of the second network device includes:

When the second network device is an RIS, it receives the reflection signal or transmission signal of the RIS, and measures and evaluates the uplink channel based on the reflection signal or transmission signal to determine the uplink reflection or transmission of the RIS. The precoding information or beam information used;

When the second network device is a relay, receive the forwarding signal of the relay, measure and evaluate the uplink channel based on the forwarding signal, and determine the precoding used by the relay in uplink forwarding. information or beam information.

In some embodiments of the present application, the channel transmission information also includes time configuration information, uplink time, downlink time and idle time. Determining the channel transmission information of the second network device includes:

Determine the time configuration information of the second network device;

Indicate the uplink time, downlink time and idle time of the second network device;

The time configuration information, the uplink time, the downlink time and the idle time are sent to the second network device.

In some embodiments of the present application, determining the time configuration information of the second network device includes:

Determine a time indication unit corresponding to the second network device and status information of the second network device within the time indication unit.

In some embodiments of the present application, determining the status information of the second network device within the time indication unit includes:

When the second network device is an RIS, the status information in the time indication unit is any one of uplink reflection or transmission, downlink reflection or transmission, and vacant;

When the second network device is a relay, the status information in the time indication unit is any one of uplink forwarding, downlink forwarding, and vacant.

In some embodiments of the present application, the indicating the uplink time, downlink time and idle time of the second network device includes:

According to the time indication unit in the time configuration information, the time corresponding to the second network device is divided, and it is determined that the time corresponding to the second network device can be divided into uplink time, downlink time and idle time.

According to the time indication unit in the time configuration information, the time window at the current time is divided, and the uplink time, downlink time and idle time of the second network device within the time window are determined.

In some embodiments of the present application, the beam measurement results include: at least one of reference signal received power RSRP, reference signal received quality RSRQ, reference signal indicated strength RSSI, and signal to interference plus noise ratio SINR.

A second embodiment of the present application provides a precoding method applied to a second network device. The method includes: receiving channel transmission information sent by the first network device; and performing signal processing based on the channel transmission information.

In some embodiments of the present application, the channel transmission information includes precoding information or beam information of the downlink channel, precoding information or beam information of the uplink channel, time configuration information, uplink time, downlink time and idle time. Receiving channel transmission information sent by the first network device includes:

Receive precoding information or beam information of the downlink channel, precoding information or beam information of the uplink channel, time configuration information, uplink time, downlink time and idle time sent by the first network device;

The signal processing based on the channel transmission information includes:

Signal processing is performed based on the precoding information or beam information of the downlink channel, the precoding information or beam information of the uplink channel, the time configuration information, the uplink time, the downlink time and the idle time.

In some embodiments of the present application, the precoding information or beam information based on the downlink channel, the precoding information or beam information of the uplink channel, the time configuration information, the uplink time, the downlink time and the idle time to perform signal processing, including: when the second network device is an RIS, using the precoding information or beam information of the uplink channel to generate a phase shift of signal reflection or signal transmission during the uplink time A matrix that uses the precoding information or beam information of the downlink channel to generate a phase shift matrix for signal reflection or signal transmission during the downlink time, and turns off the reflection or transmission function during the idle time; when the second network device When relaying, use the precoding information or beam information of the uplink channel during the uplink time to generate a precoding matrix or beam vector for signal forwarding, and use the precoding information or beam vector of the downlink channel during the downlink time. The beam information generates a precoding matrix or beam vector for signal forwarding, and the forwarding function is turned off during the idle time.

A third aspect embodiment of the present application provides a precoding method, applied to a terminal UE. The method includes: reporting precoding matrix indication information or beam measurement results for a second network device to a first network device.

The fourth aspect of the present application provides a precoding device, applied to a first network device, including: a determining module, used to determine the channel transmission information of the second network device; and a sending module, used to send the channel transmission information to the second network device. .

The fifth aspect embodiment of the present application provides a precoding device applied to a second network device, including: a receiving module for receiving channel transmission information sent by the first network device; a processing module for based on the channel Transmit information for signal processing.

The sixth aspect embodiment of the present application provides a precoding device, which is characterized in that it is applied to a terminal UE and includes: a sending module configured to report precoding matrix indication information for the second network device to the first network device. or beam measurement results.

A seventh embodiment of the present application provides a precoding system, including: a terminal UE, a first network device, and a second network device, wherein the first network device receives the information for the second network reported by the UE. Precoding matrix indication information or beam measurement results of the device; the first network device determines the channel transmission information of the second network device based on the precoding matrix indication information or beam measurement results, and transmits the channel transmission information Send to the second network device; the second network device performs signal processing based on the channel transmission information.

An eighth embodiment of the present application provides a communication device. The communication device includes: a transceiver; a memory; and a processor, respectively connected to the transceiver and the memory, and configured to control the transceiver by executing computer-executable instructions on the memory. wireless signal transceiver, and can implement the method as in the first aspect embodiment or the second aspect embodiment or the third aspect embodiment of the present application.

A ninth embodiment of the present application provides a computer storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the implementation of the first or third embodiment of the present application can be achieved. The method of the embodiment of the second aspect or the embodiment of the third aspect.

Embodiments of the present application provide a precoding method and device, in which the first network device (base station) can determine the channel transmission information of the second network device and send the channel transmission information to the second network device. Since the channel transmission information contains precoding information or beam information, so this application can avoid using algorithms to iteratively calculate RIS or relays, thereby simplifying the precoding process of RIS or relays, improving the precoding efficiency of RIS or relays, and making it more relevant suitable for practical application.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

Figure 1 is a schematic flowchart of a precoding method according to an embodiment of the present application;

Figure 2 is a schematic flowchart of a precoding method according to an embodiment of the present application;

Figure 3 is a schematic flowchart of a precoding method according to an embodiment of the present application;

Figure 4 is a schematic flowchart of a precoding method according to an embodiment of the present application;

Figure 5 is a schematic flowchart of a precoding method according to an embodiment of the present application;

Figure 6 is a schematic flowchart of a precoding method according to an embodiment of the present application;

Figure 7 is a schematic flowchart of a precoding method according to an embodiment of the present application;

Figure 8 is a schematic flowchart of a precoding method according to an embodiment of the present application;

Figure 9 is a sequence diagram of a precoding method according to an embodiment of the present application;

Figure 10 is a block diagram of a precoding device according to an embodiment of the present application;

Figure 11 is a block diagram of a precoding device according to an embodiment of the present application;

Figure 12 is a block diagram of a precoding device according to an embodiment of the present application;

Figure 13 is a schematic structural diagram of a communication device according to an embodiment of the present application;

Figure 14 is a schematic structural diagram of a chip provided by an embodiment of the present application.

Detailed ways

The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, but should not be construed as limiting the present application. It should be noted that, as long as there is no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

The terminology used in the embodiments of the present disclosure is for the purpose of describing specific embodiments only and is not intended to limit the embodiments of the present disclosure. As used in the embodiments of the present disclosure and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be called second information, and similarly, the second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "when" or "in response to determining."

The existing precoding method requires continuous iteration using corresponding algorithms to determine the phase shift of each unit on the RIS, which increases the complexity of the RIS or relay precoding, resulting in low precoding efficiency.

To this end, this embodiment proposes a precoding method and device, which can simplify the precoding process of RIS or relay and improve precoding efficiency.

The precoding method and device provided by this application will be introduced in detail below with reference to the accompanying drawings.

Figure 1 shows a schematic flowchart of a precoding method according to an embodiment of the present application. As shown in Figure 1, the method is applied to a first network device (base station) and may include the following steps.

Step 101: Determine channel transmission information of the second network device.

The first network device may be a base station, and the second network device may be a RIS or a relay. The channel transmission information may specifically include precoding information or beam information of the downlink channel, precoding information or beam information of the uplink channel, and time configuration information. , up time, down time and idle time. In addition, precoding information mainly refers to PMI (Precoding Matrix Indicator), which is essentially a precoding matrix index, and beam information mainly refers to beam identification or index.

In order to avoid iterative calculations on RIS or relays during precoding, in this embodiment of the present invention, for the downlink channel, the first network device (base station) can based on the precoding matrix indication information or beam measurement results actively reported by the terminal UE, Determine the precoding information or beam information of the downlink channel of the second network device; for the uplink channel, the first network device (base station) can determine the precoding information or beam measurement results of the downlink channel of the second network device through active measurement. In addition, the first network device (base station) can also set the time indication unit of the second network device and the status information of the second network device within the time indication unit. At the same time, it can also specify the uplink of the second network device. time, down time and idle time. The specific determination process of the above information will be introduced in detail in the following embodiments.

Step 102: Send the channel transmission information to the second network device.

In the embodiment of the present invention, the first network device (base station) will send the determined channel transmission information to the RIS or the relay, so that the RIS or the relay processes the signal according to the channel transmission information, so that the processed signal is more accurate. It is directional and enhances the user experience. It should be noted that the first network device (base station) may respectively send the precoding information or beam information of the downlink channel, the precoding information or beam information of the uplink channel, time configuration information, uplink time, downlink time and idle time to the third network device. The two network devices may also send the above channel transmission information to the second network device together, which is not specifically limited in this embodiment of the present invention.

By applying the precoding method provided in this embodiment, the first network device (base station) can determine the channel transmission information of the second network device and send the channel transmission information to the second network device. Since the channel transmission information contains precoding information or beam information. Therefore, embodiments of the present invention can avoid using algorithms to iteratively calculate RIS or relays, thereby simplifying the precoding process of RIS or relays, improving the precoding efficiency of RIS or relays, and making it more suitable for practical applications. .

Figure 2 shows a schematic flowchart of a precoding method according to an embodiment of the present application. The method is applied to the first network device (base station). Based on the embodiment shown in Figure 1, as shown in Figure 2, the method may include the following steps.

Step 201: Receive precoding matrix indication information or beam measurement results for the second network device reported by the terminal UE.

Among them, the precoding matrix indication information reported by the UE can be PMI (Precoding Matrix Indicator). The precoding matrix indicator PMI is essentially a precoding matrix index. The beam measurement results include: reference signal received power RSRP, At least one of reference signal reception quality RSRQ, reference signal indication strength RSSI, and signal to interference plus noise ratio SINR.

In the embodiment of the present invention, since the base station cannot actively measure the downlink channel, it needs to receive the precoding indication information or the beam measurement results reported by the UE, so as to determine the precoding information of the RIS or the relay based on the precoding indication information or the beam measurement results. Coded information or beam information. When specifically reporting, the UE may report one PMI, two PMIs, or multiple PMIs to the first network device (base station), and may also report one beam, two beams, or multiple beams to the first network device (base station). Beam measurement results. In actual operation, since the first network device (base station) corresponds to multiple UEs, PMI or beam measurement results reported by multiple UEs can be received at the same time.

Step 202: Determine the precoding information or beam information of the downlink channel of the second network device according to the reported precoding matrix indication information or beam measurement result.

Among them, the precoding information of the RIS or relay downlink channel mainly refers to the PMI precoding matrix index, and the beam information mainly refers to the beam identification or index.

In the embodiment of the present invention, when the base station receives the precoding indication information (MPI) reported by the UE, it can select the PMI that matches the downlink channel from multiple PMIs as the precoding information of the RIS or relay downlink channel; when When the base station receives the beam measurement results of multiple beams reported by the UE, it can select the beam ID that matches the downlink channel from the multiple beam IDs based on the beam measurement results as the beam information of the RIS or relay downlink channel.

Step 203: Send the precoding information or beam information of the downlink channel to the second network device.

For the embodiment of the present invention, after the first network device (base station) determines the precoding information or beam information of the RIS or relay downlink channel, the first network device (base station) will feed back the precoding information or beam information of the downlink channel to The second network device (RIS or relay) is so that the second network device (RIS or relay) processes the signal according to the precoding information or beam information.

By applying the precoding method provided in this embodiment, the base station can directly determine the precoding information or beam information of the downlink channel of the second network device (RIS or relay) through the precoding indication information or beam measurement results reported by the UE, and use The precoding information or beam information of the downlink channel is sent to the second network device (RIS or relay), thereby avoiding the use of algorithms to perform iterative calculations on the RIS or relay, thereby simplifying the precoding process of the RIS or relay and improving The precoding efficiency of RIS or relay is more suitable for practical applications.

Figure 3 shows a schematic flowchart of a precoding method according to an embodiment of the present application. The method is applied to the first network device (base station), based on the embodiment shown in Figure 2, as shown in Figure 3, and the method may include the following steps.

Step 301: Receive precoding matrix indication information or beam measurement results for the second network device reported by the terminal UE.

In this embodiment of the present invention, the first network device (base station) cannot actively measure the downlink channel, so the UE needs to perform beam scanning measurements and select the code from the preset codebook that matches the downlink channel based on the measurement evaluation results. One, two or more PMIs are reported to the first network device (base station) as precoding indication information. In addition, the UE can also select one, two or more beams that match the downlink channel from the multiple beams based on the multiple beam measurement results, and send the corresponding beam measurement results to the first network device (base station) . In this way, the first network device (base station) can receive the precoding matrix indication information or beam measurement result for the second network device reported by the UE.

Step 302: When the reported precoding indication information PMI is the PMI reported by the UE, determine the precoding information or beam information of the downlink channel of the second network device according to the PMI reported by the UE.

For the embodiment of the present invention, when the UE reports PMI, the first network device (base station) can select the optimal PMI as the precoding information of the RIS or relay downlink channel based on the received PMI reported by multiple UEs. For example, when multiple UEs are in the same area, the first network device (base station) can randomly select one PMI from the received multiple PMIs as RIS or relay precoding information; when multiple UEs are in different areas, The first network device (base station) may select two or three PMIs from the received multiple PMIs as RIS or relay precoding information according to the area. In addition, since there is a one-to-one correspondence between the precoding matrix and the beam, when the precoding information of the RIS or the relay is determined, the beam information of the RIS or the relay is determined.

Step 303: When the reported result is a beam measurement result, determine the precoding information or beam information of the downlink channel of the second network device according to the beam measurement result reported by the UE.

For the embodiment of the present invention, when the UE reports a beam measurement result, the first network device (base station) can select a beam suitable for the downlink channel from multiple beams based on the beam measurement result reported by the UE, and apply the beam to the downlink channel. The beam identification of the channel is used as the beam information. In addition, since there is a one-to-one correspondence between the precoding matrix and the beam, when the beam information of the RIS or the relay is determined, the precoding information of the RIS or the relay is determined.

Optionally, when the second network device is an RIS, the method includes: in response to the PMI reported by the UE, determining precoding information used in downlink reflection or transmission of the RIS according to the PMI reported by the UE. ; In response to the beam measurement result reported by the UE, determine the beam information used in downlink reflection or transmission of the RIS according to the beam measurement result reported by the UE.

Specifically, for RIS, when the UE reports the precoding matrix indication information PMI, the first network device (base station) can determine the PMI that matches the downlink channel based on the PMI reported by the UE, and use it as the RIS downlink reflection or Precoding information used in transmission; when the UE reports the beam measurement results, the first network device (base station) can determine the beam identifier matching the downlink channel based on the beam measurement results reported by the UE, and use it as the RIS downlink Beam information used when transmitting or transmitting.

Optionally, when the second network device is a relay, the method includes: in response to the PMI reported by the UE, determining the precoding information used by the relay in downlink forwarding according to the PMI reported by the UE. ; In response to the beam measurement result reported by the UE, determine the beam information used by the relay for downlink forwarding according to the beam measurement result reported by the UE.

Specifically, for the relay, when the UE reports the precoding matrix indication information PMI, the first network device (base station) can determine the PMI that matches the downlink channel based on the PMI reported by the UE, and forward it as the relay The precoding information used when the UE reports the beam measurement result; when the UE reports the beam measurement result, the first network device (base station) can determine the beam identity that matches the downlink channel based on the beam measurement result reported by the UE, and forward it as a relay Beam information used.

Step 304: Send the precoding information or beam information of the downlink channel to the second network device.

For the embodiment of the present invention, after determining the precoding information or beam information of the downlink channel, the first network device (base station) will send the precoding information or beam information of the downlink channel as channel transmission information to the second network device (RIS or relay), so that the RIS or relay processes the signal based on precoding information or beam information.

Figure 4 shows a schematic flowchart of a precoding method according to an embodiment of the present application. The method is applied to the first network device (base station), based on the embodiment shown in Figure 1, as shown in Figure 4, and the method may include the following steps.

Step 401: Measure the uplink channel and determine the precoding information or beam information of the uplink channel of the second network device.

In the embodiment of the present invention, not only the precoding process of the RIS or relay downlink channel can be simplified, but also the precoding process of the uplink channel can be simplified. Specifically, for the uplink channel, the first network device (base station) can actively measure the uplink channel, and select the PMI that matches the uplink channel from the preset codebook as the preset coding information based on the measurement evaluation result of the uplink channel. , or select the beam that matches the uplink channel from the multiple beams based on the beam measurement results corresponding to the multiple beams, and use the beam identifier that matches the uplink channel as the beam information.

The beam measurement result of the uplink channel may include at least one of reference signal received power RSRP, reference signal received quality RSRQ, reference signal indicated strength RSSI, and signal to interference plus noise ratio SINR.

In the process of determining the precoding information of the uplink channel, when the second network device is an RIS, the reflected signal or transmitted signal of the RIS is received, and the uplink channel is measured based on the reflected signal or transmitted signal. and evaluation, determine the precoding information or beam information used in the uplink reflection or transmission of the RIS; when the second network device is a relay, receive the forwarding signal of the relay, and based on the forwarding signal, The uplink channel is measured and evaluated to determine the precoding information or beam information used by the relay for uplink forwarding.

Step 402: Send the precoding information or beam information of the uplink channel to the second network device.

For this embodiment of the present invention, after the first network device (base station) determines the precoding information or beam information of the uplink channel of the second network device (RIS or relay), the first network device (base station) will determine the precoding information or beam information of the uplink channel. The information or beam information is fed back to the RIS or relay. After receiving the precoding information or beam information of the uplink channel, the RIS can perform uplink reflection or transmission of the signal according to the precoding information or beam information of the uplink channel; after the relay receives the precoding information or beam information of the uplink channel, The signal can be forwarded uplink based on the precoding information or beam information of the uplink channel. This can make the transmitted signal more directional, enhance the signal strength of the terminal, and ensure the user experience.

It should be noted that although the embodiment shown in FIG. 4 is described based on the embodiment shown in FIG. 1 , similarly, the embodiment shown in FIG. 4 may also be based on the embodiment shown in FIGS. 2 and 3 . This will not be described again.

By applying the precoding method provided in this embodiment, the base station can directly determine the precoding information or beam information of the downlink channel of the second network device (RIS or relay) through the precoding indication information or beam measurement results reported by the UE, and can also By actively measuring the uplink channel, determine the precoding information or beam information of the uplink channel of the second network device (RIS or relay), and send the precoding information or beam information of the downlink channel and the uplink channel to the second network device (RIS or relay). Relay), thereby avoiding the use of algorithms to perform iterative calculations on RIS or relays, thereby simplifying the precoding process of RIS or relays, improving the precoding efficiency of RIS or relays, and making it more suitable for practical applications.

Figure 5 is a schematic flowchart of a precoding method according to an embodiment of the present application. The method is applied to the first network device (base station), based on the embodiment shown in Figure 1, as shown in Figure 5, and the method may include the following steps.

Step 501: Determine the time configuration information of the second network device.

Among them, the time configuration information of the RIS or the relay mainly includes the time indication unit, and the status information of the RIS or the relay within the time indication unit.

Optionally, step 501 includes: determining the time indication unit corresponding to the second network device (RIS or relay), and the status information of the second network device (RIS or relay) within the time indication unit. . Specifically, time is divided into uplink time, downlink time and idle time in the time configuration information of the RIS or the relay. The idle time may include the shutdown time of the RIS or the relay. At the same time, the time indication unit of the above time is set, and the time indication unit may specifically be ms, subframe, and time slot. Further, when the second network device is RIS, it is determined that the status information within the time indication unit is any one of uplink reflection or transmission, downlink reflection or transmission, and vacant; when the second network device is When relaying, it is determined that the status information in the time indication unit is any one of uplink forwarding, downlink forwarding and vacant. Therefore, the determination of the RIS or relay time configuration information can be completed in the above manner.

Step 502: Indicate the uplink time, downlink time and idle time of the second network device.

For the embodiment of the present invention, after determining the time configuration information of the RIS or the relay, it is also necessary to determine the uplink time, downlink time and shutdown time of the RIS or the relay. Specifically, the duration indication method or the time window indication method can be used to clarify the uplink time, downlink time and shutdown time of the RIS or relay. Specifically, the duration indication method can be a periodic indication method and a non-periodic indication method.

For the duration indication method, the time corresponding to the second network device (RIS or relay) can be divided according to the time indication unit in the time configuration information, and it is determined that the time corresponding to the second network device can be divided into Up time, down time and idle time.

Taking the periodic indication method as an example, the time period corresponding to the RIS or relay includes n time slots, of which n1 time slots are divided into uplink time, n2 time slots are divided into downlink time, and n-n1-n2 time slots are divided into The slot is divided into closing time, whereby the indication of RIS or trunk upstream time, downstream time and idle time can be completed.

The time window indication method can divide the time window at the current time according to the time indication unit in the time configuration information, and determine the uplink time of the second network device (RIS or relay) within the time window. , down time and idle time.

For example, the time indication unit is a time slot, and the length of the time window is k time slots. Since the current time happens to be in the nth time slot, configure the n+1 to n+kth time slots, and k1 Time slots are divided into uplink time, k2 time slots are divided into downlink time, and k-k1-k2 time slots are divided into off-time, thus indicating the RIS or relay uplink time, downlink time and idle time.

Step 503: Send the time configuration information, the uplink time, the downlink time and the idle time to the second network device.

For the embodiment of the present invention, after determining the time configuration information, uplink time, downlink time and idle time of the RIS or the relay, the above information is sent to the RIS or the relay, so that the RIS or the relay uses the preset uplink channel during the uplink time. The coding information or beam information is used to process the signal. In the downlink time, the precoding information or beam information of the downlink channel is used to process the signal, and the signal processing function is turned off during the idle time.

It should be noted that although the embodiment shown in FIG. 5 is described based on the embodiment shown in FIG. 1 , similarly, the embodiment shown in FIG. 5 can also be implemented based on the implementation shown in FIGS. 2 , 3 and 4 For example, we will not go into details here.

By applying the precoding method provided in this embodiment, the base station can directly determine the precoding information or beam information of the downlink channel of the second network device (RIS or relay) through the precoding indication information or beam measurement results reported by the UE, and can also By actively measuring the uplink channel, determine the precoding information or beam information of the uplink channel of the second network device (RIS or relay), and combine the precoding information or beam information, time configuration information, uplink time, and downlink channel of the downlink channel and uplink channel. The time and idle time are sent to the second network device (RIS or relay), thereby avoiding the use of algorithms to iteratively calculate the RIS or relay, thus simplifying the precoding process of the RIS or relay and improving the performance of the RIS or relay. Precoding efficiency is more suitable for practical applications.

Figure 6 is a schematic flowchart of a precoding method according to an embodiment of the present application. As shown in Figure 6, the method is applied to the second network device (RIS or relay), and may include the following steps.

Step 601: Receive channel transmission information sent by the first network device.

The second network device may be a RIS or a relay, and the channel transmission information may specifically include precoding information or beam information of the downlink channel, precoding information or beam information of the uplink channel, time configuration information, uplink time, downlink time and vacancy. time. In addition, precoding information mainly refers to PMI (Precoding Matrix Indicator), which is essentially a precoding matrix index, and beam information mainly refers to beam identification or index.

Step 602: Perform signal processing based on the channel transmission information.

In the embodiment of the present invention, after determining the above-mentioned channel transmission information, the first network device (base station) will send it to the RIS or relay. After receiving the transmission information, the RIS will reflect the signal according to the channel transmission information. Or transmission processing; after the relay receives the transmission information, it will forward the signal according to the channel transmission information.

By applying the precoding method provided in this embodiment, the second network device (RIS or relay) can receive the channel transmission information fed back by the base station, where the precoding information or beam information in the channel transmission information is determined by the base station according to the terminal UE The reported precoding indication information or beam measurement results are determined, or determined through active measurement. Therefore, embodiments of the present invention can avoid using algorithms to perform iterative calculations on RIS or relays, thereby simplifying the precoding process of RIS or relays. Improve the precoding efficiency of RIS or relay to make it more suitable for practical applications.

Figure 7 is a schematic flowchart of a precoding method according to an embodiment of the present application. The method is applied to the second network device (RIS or relay), based on the embodiment shown in Figure 6, as shown in Figure 7, and the method may include the following steps.

Step 701: Receive precoding information or beam information of the downlink channel, precoding information or beam information of the uplink channel, time configuration information, uplink time, downlink time and idle time sent by the first network device.

For the embodiment of the present invention, after determining the precoding information or beam information of the downlink channel, the precoding information or beam information of the uplink channel, time configuration information, uplink time, downlink time and control time, the first network device (base station) will The above information is sent to the second network device (RIS or relay), so that the second network device (RIS or relay) processes the signal according to the above information. It should be noted that the base station can send the above information to the second network device (RIS or relay) respectively, or after all the above information is determined, send it together to the second network device (RIS or relay). The present invention implements This example does not specifically limit this.

Step 702: Perform signaling based on the precoding information or beam information of the downlink channel, the precoding information or beam information of the uplink channel, the time configuration information, the uplink time, the downlink time and the idle time. deal with.

The precoding information of the uplink channel and the precoding information of the downlink channel may be specifically the precoding matrix index PMI, and the beam information of the uplink channel and the beam information of the downlink channel may be specifically beam identification or coding.

Optionally, step 702 specifically includes: when the second network device is an RIS, using the precoding information or beam information of the uplink channel to generate a phase shift matrix of signal reflection or signal transmission during the uplink time. During the downlink time, the precoding information or beam information of the downlink channel is used to generate a phase shift matrix for signal reflection or signal transmission, and the reflection or transmission function is turned off during the idle time; when the second network device is a relay When, during the uplink time, the precoding information or beam information of the uplink channel is used to generate a precoding matrix or beam vector for signal forwarding, and during the downlink time, the precoding information or beam information of the downlink channel is used to generate The precoding matrix or beam vector for signal forwarding turns off the forwarding function during the idle time.

Specifically, after the second network device (RIS or relay) receives the precoding information or beam information of the downlink channel, the precoding information or beam information of the uplink channel, the time configuration information, the uplink time, the downlink time and the idle time, When the second network device is a RIS, the RIS uses the precoding information or beam information of the uplink channel in the uplink time to determine the precoding matrix or beam used in the uplink time, and then determines the uplink time based on the precoding matrix or beam used in the uplink time. phase shift matrix, and use this phase shift matrix to perform reflection or transmission processing on the signal; similarly, RIS uses the precoding information or beam information of the downlink channel in the downlink time to determine the precoding matrix or beam used in the downlink time, and then determines the precoding matrix or beam used in the downlink time. The precoding matrix or beam used in the time determines the phase shift matrix of the downlink time, and uses this phase shift matrix to perform reflection or transmission processing on the signal; RIS will turn off the reflection or transmission function during the idle time.

When the second network device is a relay, the relay uses the precoding information or beam information of the uplink channel during the uplink time to query the preset codebook or beam vector set, determine the precoding matrix or beam vector used for signal forwarding, and The precoding matrix or beam vector is used to forward the signal; similarly, the relay uses the precoding information or beam information of the downlink channel during the downlink time to query the preset codebook or beam vector set to determine the precoding matrix used for signal forwarding. or beam vector, and use the precoding matrix or beam vector to forward the signal; the relay will turn off the forwarding function during the idle time.

By applying the precoding method provided in this embodiment, the second network device (RIS or relay) can receive the precoding information or beam information, time configuration information, uplink time, downlink time and Idle time, where the precoding information or beam information of the downlink channel is determined by the base station based on the precoding indication information or beam measurement results reported by the terminal UE, and the precoding information or beam information of the uplink channel is determined by the base station's active measurement, This can avoid using algorithms to perform iterative calculations on RIS or relays, thereby simplifying the precoding process of RIS or relays, improving the precoding efficiency of RIS or relays, and making it more suitable for practical applications.

Figure 8 shows a schematic flowchart of a precoding method according to an embodiment of the present application. As shown in Figure 8, the method is applied to a terminal (UE) and may include the following steps.

Step 801: Report precoding matrix indication information or beam measurement results for the second network device to the first network device.

The first network device may be a base station, the second network device may be a RIS or a relay, the precoding matrix indication information is PMI, and the beam measurement results include: reference signal received power RSRP, reference signal received quality RSRQ, reference signal Indicates at least one of strength RSSI and signal to interference plus noise ratio SINR.

In this embodiment of the present invention, the first network device (base station) cannot actively measure the downlink channel, so the UE needs to perform beam scanning measurements and select the code from the preset codebook that matches the downlink channel based on the measurement evaluation results. One, two or more PMIs are reported to the first network device (base station) as precoding indication information. In addition, the UE can also select one, two or more beams that match the downlink channel from the multiple beams based on the multiple beam measurement results, and send the corresponding beam measurement results to the first network device (base station) .

By applying the precoding method provided in this embodiment, the UE can report precoding indication information or beam measurement results to the first network device (base station). Based on the precoding indication information or beam measurement results, the first network device (base station) can Determine the precoding information or beam information of the downlink channel of the second network device (RIS or relay), and send the precoding information or beam information of the downlink channel to the second network device (RIS or relay), thereby avoiding the use of The algorithm performs iterative calculations on RIS or relays, thereby simplifying the precoding process of RIS or relays, improving the precoding efficiency of RIS or relays, and making it more suitable for practical applications.

Figure 9 is a sequence diagram of a precoding method according to an embodiment of the present application. The method is applied to a secure communication system. The system includes: a terminal UE, a first network device, and a second network device. The first network device receives the precoding matrix indication for the second network device reported by the UE. information or beam measurement results; the first network device determines the channel transmission information of the second network device according to the precoding matrix indication information or beam measurement results, and sends the channel transmission information to the second network device. Network device; the second network device performs signal processing based on the channel transmission information.

Referring to Figure 9, the method includes the following steps.

Step 901: The UE reports precoding indication information or beam measurement results for the second network device to the first network device.

Since the first network device (base station) cannot actively measure the downlink channel, the UE performs the measurement. The UE determines the precoding indication information or beam measurement results for the second network device based on the measurement results, and sends the precoding indication information or beam measurement results to the second network device. The beam measurement results are reported to the first network device (base station).

Step 902: The first network device determines the precoding information or beam information of the downlink channel of the second network device according to the precoding matrix indication information or beam measurement result reported by the UE.

When the second network device is a RIS, if the UE reports PMI, the first network device determines the precoding information used in the downlink reflection or transmission of the RIS based on the PMI reported by the UE; if the UE reports a beam measurement result, then The first network device determines the beam information used in downlink reflection or transmission of the RIS based on the beam measurement results reported by the UE.

When the second network device is a relay, if the UE reports a PMI, the first network device determines the precoding information used by the relay for downlink forwarding based on the PMI reported by the UE; if the UE reports a beam measurement result, then The first network device determines the beam information used by the relay for downlink forwarding based on the beam measurement results reported by the UE.

Step 903: The first network device sends the precoding information or beam information of the downlink channel to the second network device.

Step 904: The first network device measures the uplink channel and determines the precoding information or beam information of the uplink channel of the second network device.

Step 905: The first network device sends the precoding information or beam information of the uplink channel to the second network device.

Step 906: The first network device determines the time configuration information of the second network device.

First, the time indication unit corresponding to the second network device is determined, and then the status information of the second network device within the time indication unit is determined.

Step 907: The first network device indicates the uplink time, downlink time and idle time of the second network device.

Specifically, the duration indication method or the time window indication method may be used to determine the uplink time, downlink time and idle time of the second network device (RIS or relay).

Step 908: The first network device sends the time configuration information, the uplink time, the downlink time and the idle time to the second network device.

Step 909: The second network device performs the following steps based on the precoding information or beam information of the downlink channel, the precoding information or beam information of the uplink channel, the time configuration information, the uplink time, the downlink time and the Idle time for signal processing.

Specifically, when the second network device is a RIS, the RIS uses the precoding information or beam information of the uplink channel to generate a phase shift matrix of signal reflection or signal transmission during the uplink time, and uses the precoding of the downlink channel during the downlink time. The information or beam information generates a phase shift matrix of signal reflection or signal transmission, and turns off the reflection or transmission function during the idle time; when the second network device is a relay, the relay uses the precoding information or beam of the uplink channel during the uplink time The information generates a precoding matrix or beam vector for signal forwarding. During the downlink time, the precoding information or beam information of the downlink channel is used to generate a precoding matrix or beam vector for signal forwarding. The forwarding function is turned off during the idle time.

By applying the precoding method provided in this embodiment, the base station can directly determine the precoding information or beam information of the downlink channel of the second network device (RIS or relay) through the precoding indication information or beam measurement results reported by the UE, and can also By actively measuring the uplink channel, determine the precoding information or beam information of the uplink channel of the second network device (RIS or relay), and combine the precoding information or beam information, time configuration information, uplink time, and downlink channel of the downlink channel and uplink channel. The time and idle time are sent to the second network device (RIS or relay), thereby avoiding the use of algorithms to iteratively calculate the RIS or relay, thereby simplifying the precoding process of the RIS or relay and improving the performance of the RIS or relay. Precoding efficiency is more suitable for practical applications.

In the above-mentioned embodiments provided by the present application, the methods provided by the embodiments of the present application are introduced from the perspectives of network equipment and terminals. In order to implement the functions in the methods provided by the above embodiments of the present application, network devices and terminals may include hardware structures and software modules to implement the above functions in the form of hardware structures, software modules, or hardware structures plus software modules. A certain function among the above functions can be executed by a hardware structure, a software module, or a hardware structure plus a software module.

Corresponding to the precoding methods provided by the above embodiments, the present application also provides a precoding device. Since the precoding device provided by the embodiments of the present application corresponds to the precoding methods provided by the above embodiments, the precoding device The implementation of the encoding method is also applicable to the precoding device provided in this embodiment, and will not be described in detail in this embodiment.

Figure 10 is a schematic structural diagram of a precoding device provided by an embodiment of the present application. The precoding device can be used in a first network device (base station).

As shown in Figure 10, the apparatus may include: a determining module 1010, used to determine the channel transmission information of the second network device; and a sending module 1020, used to send the channel transmission information to the second network device.

In some embodiments, the determination module 1010 includes: a receiving sub-module and a determining sub-module. The receiving sub-module is used to receive the precoding matrix indication information or beam measurement results for the second network device reported by the terminal UE. ; The determination sub-module is used to determine the precoding information or beam information of the downlink channel of the second network device according to the reported precoding matrix indication information or beam measurement results; the sending module 1020 is specifically used to Send the precoding information or beam information of the downlink channel to the second network device.

In some embodiments, the determination submodule is specifically configured to determine the precoding information of the downlink channel of the second network device according to the PMI reported by the UE when the reported precoding indication information PMI is Beam information: when the reported is a beam measurement result, determine the precoding information or beam information of the downlink channel of the second network device according to the beam measurement result reported by the UE.

In some embodiments, when the second network device is an RIS, the determination submodule is further specifically configured to respond to the PMI reported by the UE and determine the downlink reflection of the RIS or the PMI reported by the UE according to the PMI reported by the UE. Precoding information used in transmission; in response to the beam measurement result reported by the UE, determine the beam information used in downlink reflection or transmission of the RIS according to the beam measurement result reported by the UE.

In some embodiments, when the second network device is a relay, the determining submodule is further specifically configured to respond to the PMI reported by the UE and determine the downlink of the relay according to the PMI reported by the UE. Precoding information used in forwarding; in response to the beam measurement result reported by the UE, determine the beam information used by the relay in downlink forwarding based on the beam measurement result reported by the UE.

In some embodiments, the determination sub-module is also used to measure the uplink channel and determine the precoding information or beam information of the uplink channel of the second network device; the sending module 1020 is also specifically used to send the uplink The precoding information or beam information of the channel is sent to the second network device

In some embodiments, the determination sub-module is also specifically configured to receive the reflection signal or transmission signal of the RIS when the second network device is an RIS, and based on the reflection signal or transmission signal, determine the Measure and evaluate the uplink channel to determine the precoding information or beam information used in the uplink reflection or transmission of the RIS; when the second network device is a relay, receive the forwarded signal of the relay, and based on the The forwarded signal is measured and evaluated on the uplink channel, and the precoding information or beam information used by the relay in uplink forwarding is determined.

In some embodiments, the determination module 1010 further includes: an indication sub-module, the determination sub-module is also used to determine the time configuration information of the second network device; the indication sub-module is used to indicate the The uplink time, downlink time and idle time of the second network device; the sending module 1020 is also specifically configured to send the time configuration information, the uplink time, the downlink time and the idle time to the third network device. 2. Network equipment.

In some embodiments, the determination sub-module is further specifically configured to determine the time indication unit corresponding to the second network device, and the status information of the second network device within the time indication unit.

In some embodiments, when the second network device is an RIS, the status information in the time indication unit is any one of uplink reflection or transmission, downlink reflection or transmission, and idle; when the second network device When the device is a relay, the status information in the time indication unit is any one of uplink forwarding, downlink forwarding, and vacant.

In some embodiments, the indication submodule is specifically configured to divide the time corresponding to the second network device according to the time indication unit in the time configuration information, and determine the time corresponding to the second network device. It can be divided into up time, down time and idle time.

In some embodiments, the indication submodule is further specifically configured to divide the time window at the current time according to the time indication unit in the time configuration information, and determine whether the second network device is in the time window. up time, down time and idle time within the time limit.

In some embodiments, the beam measurement results include: at least one of reference signal received power RSRP, reference signal received quality RSRQ, reference signal indicated strength RSSI, and signal to interference plus noise ratio SINR.

Through this embodiment, the base station can directly determine the precoding information or beam information of the downlink channel of the second network device (RIS or relay) through the precoding indication information or beam measurement results reported by the UE, and can also actively measure the uplink channel. Determine the precoding information or beam information of the uplink channel of the second network device (RIS or relay), and send the precoding information or beam information, time configuration information, uplink time, downlink time and idle time of the downlink channel and uplink channel to The second network device (RIS or relay) can avoid using algorithms to perform iterative calculations on RIS or relay, thereby simplifying the precoding process of RIS or relay, improving the precoding efficiency of RIS or relay, and making it more relevant. suitable for practical application.

Figure 11 is a schematic structural diagram of a precoding device provided by an embodiment of the present application. The precoding device can be applied to the second network equipment (RIS or relay).

As shown in Figure 11, the device may include: a receiving module 1110, configured to receive channel transmission information sent by the first network device; and a processing module 1120, configured to perform signal processing based on the channel transmission information.

In some embodiments, the receiving module 1110 is specifically configured to receive the precoding information or beam information of the downlink channel, the precoding information or beam information of the uplink channel, time configuration information, uplink time, downlink information, etc. sent by the first network device. time and idle time; the processing module 1120 is specifically configured to be based on the precoding information or beam information of the downlink channel, the precoding information or beam information of the uplink channel, the time configuration information, the uplink time, The downlink time and the idle time are used for signal processing.

In some embodiments, the processing module 1120 is also specifically configured to use the precoding information or beam information of the uplink channel to generate a signal reflection or signal within the uplink time when the second network device is an RIS. The phase shift matrix of transmission uses the precoding information or beam information of the downlink channel to generate a phase shift matrix of signal reflection or signal transmission during the downlink time, and turns off the reflection or transmission function during the idle time; when the When the second network device is a relay, the precoding information or beam information of the uplink channel is used during the uplink time to generate a precoding matrix or beam vector for signal forwarding, and the precoding information or beam information of the downlink channel is used during the downlink time. The precoding information or beam information generates a precoding matrix or beam vector for signal forwarding, and the forwarding function is turned off during the idle time.

Through this embodiment, the second network device (RIS or relay) can receive the precoding information or beam information, time configuration information, uplink time, downlink time and idle time of the downlink channel and uplink channel fed back by the base station, where the downlink The precoding information or beam information of the channel is determined by the base station based on the precoding indication information or beam measurement results reported by the terminal UE. The precoding information or beam information of the uplink channel is determined by the base station's active measurement, thus avoiding the use of algorithms. Iterative calculation of RIS or relay can simplify the precoding process of RIS or relay, improve the precoding efficiency of RIS or relay, and make it more suitable for practical applications.

Figure 12 is a schematic structural diagram of a precoding device provided by an embodiment of the present application. The precoding device can be used in terminal UE.

As shown in Figure 12, the apparatus may include: a sending module 1210, configured to report precoding matrix indication information or beam measurement results for the second network device to the first network device.

Through this embodiment, the UE can report precoding indication information or beam measurement results to the first network device (base station), and the first network device (base station) can determine that the second network device ( RIS or relay) downlink channel precoding information or beam information, and sends the downlink channel precoding information or beam information to the second network device (RIS or relay), thereby avoiding the use of algorithms to RIS or relay Iterative calculation can be performed to simplify the precoding process of RIS or relay, improve the precoding efficiency of RIS or relay, and make it more suitable for practical applications.

Please refer to Figure 13, which is a schematic structural diagram of a communication device 1300 provided in this embodiment. The communication device 1300 may be a network device, a terminal, a chip, a chip system, or a processor that supports a network device to implement the above method, or a chip, a chip system, or a processor that supports a terminal to implement the above method. wait. The device can be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.

Communication device 1300 may include one or more processors 1301. The processor 1301 may be a general-purpose processor or a special-purpose processor, or the like. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data. The central processor can be used to control communication devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.) and execute computer programs. , processing data for computer programs.

Optionally, the communication device 1300 may also include one or more memories 1302, on which a computer program 1304 may be stored. The processor 1301 executes the computer program 1304, so that the communication device 1300 executes the method described in the above method embodiment. Optionally, the memory 1302 may also store data. The communication device 1300 and the memory 1302 can be provided separately or integrated together.

Optionally, the communication device 1300 may also include a transceiver 1305 and an antenna 1306. The transceiver 1305 may be called a transceiver unit, a transceiver, a transceiver circuit, etc., and is used to implement transceiver functions. The transceiver 1305 may include a receiver and a transmitter. The receiver may be called a receiver or a receiving circuit, etc., used to implement the receiving function; the transmitter may be called a transmitter, a transmitting circuit, etc., used to implement the transmitting function.

Optionally, the communication device 1300 may also include one or more interface circuits 1307. The interface circuit 1307 is used to receive code instructions and transmit them to the processor 1301 . The processor 1301 executes code instructions to cause the communication device 1300 to perform the method described in the above method embodiment.

In one implementation, the processor 1301 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuits, interfaces or interface circuits used to implement the receiving and transmitting functions can be separate or integrated together. The above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing codes/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transfer.

In one implementation, the processor 1301 may store a computer program 1303, and the computer program 1303 runs on the processor 1301, causing the communication device 1300 to perform the method described in the above method embodiment. The computer program 1303 may be solidified in the processor 1301, in which case the processor 1301 may be implemented by hardware.

In one implementation, the communication device 1300 may include a circuit, which may implement the functions of sending or receiving or communicating in the foregoing method embodiments. The processor and transceiver described in this application can be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board (PCB), electronic equipment, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), n-type metal oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication device described in the above embodiments may be a network device or user equipment, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited by FIG. 13 . The communication device may be a stand-alone device or may be part of a larger device. For example, the communication device can be:

(1) Independent integrated circuit IC, or chip, or chip system or subsystem;

(2) A collection of one or more ICs. Optionally, the IC collection may also include storage components for storing data and computer programs;

(3)ASIC, such as modem;

(4) Modules that can be embedded in other devices;

(5) Receivers, terminal equipment, intelligent terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.;

(6) Others, etc.

For the case where the communication device may be a chip or a chip system, refer to the schematic structural diagram of the chip shown in FIG. 14 . The chip shown in Figure 14 includes a processor 1401 and an interface 1402. The number of processors 1401 may be one or more, and the number of interfaces 1402 may be multiple.

Optionally, the chip also includes a memory 1403, which is used to store necessary computer programs and data.

Those skilled in the art can also understand that the various illustrative logical blocks and steps listed in the embodiments of this application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and overall system design requirements. Those skilled in the art can use various methods to implement the described functions for each specific application, but such implementation should not be understood as exceeding the protection scope of the embodiments of the present application.

This application also provides a readable storage medium on which instructions are stored. When the instructions are executed by a computer, the functions of any of the above method embodiments are implemented.

This application also provides a computer program product, which, when executed by a computer, implements the functions of any of the above method embodiments.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. A computer program product includes one or more computer programs. When a computer program is loaded and executed on a computer, processes or functions according to embodiments of the present application are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer program may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program may be transmitted from a website, computer, server or data center via a wireline (e.g. Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means to transmit to another website, computer, server or data center. Computer-readable storage media can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or other integrated media that contains one or more available media. Available media may be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks (SSD) )wait.

Persons of ordinary skill in the art can understand that the first, second, and other numerical numbers involved in this application are only for convenience of description and are not used to limit the scope of the embodiments of this application and also indicate the order.

At least one in this application can also be described as one or more, and the plurality can be two, three, four or more, which is not limited by this application. In the embodiment of this application, for a technical feature, the technical feature is distinguished by "first", "second", "third", "A", "B", "C" and "D", etc. The technical features described in "first", "second", "third", "A", "B", "C" and "D" are in no particular order or order.

As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and/or means for providing machine instructions and/or data to a programmable processor ( For example, magnetic disks, optical disks, memories, programmable logic devices (PLD)), including machine-readable media that receive machine instructions as machine-readable signals. The term "machine-readable signal" refers to any signal used to provide machine instructions and/or data to a programmable processor.

The systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., A user's computer having a graphical user interface or web browser through which the user can interact with implementations of the systems and technologies described herein), or including such backend components, middleware components, or any combination of front-end components in a computing system. The components of the system may be interconnected by any form or medium of digital data communication (eg, a communications network). Examples of communication networks include: local area network (LAN), wide area network (WAN), and the Internet.

Computer systems may include clients and servers. Clients and servers are generally remote from each other and typically interact over a communications network. The relationship of client and server is created by computer programs running on corresponding computers and having a client-server relationship with each other.

It should be understood that various forms of the process shown above may be used, with steps reordered, added or deleted. For example, each step described in this application can be executed in parallel, sequentially, or in a different order. As long as the desired results of the technical solution of this application can be achieved, there is no limitation here.

In addition, it should be understood that the various embodiments described in this application can be implemented alone or in combination with other embodiments if the scheme allows.

Those of ordinary skill in the art can appreciate that the units and algorithm steps of each example described in conjunction with the embodiments applied for herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A precoding method, characterized in that it is applied to a first network device, and the method includes:

Determine the channel transmission information of the second network device;

Send the channel transmission information to the second network device.
The method according to claim 1, wherein the channel transmission information includes precoding information or beam information of a downlink channel, and determining the channel transmission information of the second network device includes:

Receive precoding matrix indication information or beam measurement results for the second network device reported by the terminal UE;

Determine the precoding information or beam information of the downlink channel of the second network device according to the reported precoding matrix indication information or beam measurement results;

The sending of the channel transmission information to the second network device includes:

Send the precoding information or beam information of the downlink channel to the second network device.
The method according to claim 2, wherein determining the precoding information or beam information of the downlink channel of the second network device according to the precoding matrix indication information or beam measurement results includes:

When the reported is precoding indication information PMI, determine the precoding information or beam information of the downlink channel of the second network device according to the PMI reported by the UE;

When the reported is a beam measurement result, the precoding information or beam information of the downlink channel of the second network device is determined according to the beam measurement result reported by the UE.
The method according to claim 3, characterized in that when the second network device is an RIS, the downlink channel of the second network device is determined based on the reported precoding matrix indication information or beam measurement results. The precoding information includes:

In response to the PMI reported by the UE, determine the precoding information used in downlink reflection or transmission of the RIS according to the PMI reported by the UE;

In response to the beam measurement result reported by the UE, the beam information used in downlink reflection or transmission of the RIS is determined according to the beam measurement result reported by the UE.
The method according to claim 3, characterized in that when the second network device is a relay, determining the downlink channel of the second network device according to the precoding matrix indication information or beam measurement results. Precoding information or beam information includes:

In response to the PMI reported by the UE, determine the precoding information used by the relay for downlink forwarding according to the PMI reported by the UE;

In response to the beam measurement result reported by the UE, the beam information used by the relay for downlink forwarding is determined based on the beam measurement result reported by the UE.
The method according to claim 1 or 2, characterized in that the channel transmission information includes precoding information or beam information of the uplink channel, and the determining the channel transmission information of the second network device includes:

Measure the uplink channel and determine the precoding information or beam information of the uplink channel of the second network device;

The sending of the channel transmission information to the second network device includes:

Send the precoding information or beam information of the uplink channel to the second network device.
The method according to claim 6, wherein measuring the uplink channel and determining the precoding information or beam information of the uplink channel of the second network device includes:

When the second network device is an RIS, it receives the reflection signal or transmission signal of the RIS, and measures and evaluates the uplink channel based on the reflection signal or transmission signal to determine the uplink reflection or transmission of the RIS. The precoding information or beam information used;

When the second network device is a relay, receive the forwarding signal of the relay, measure and evaluate the uplink channel based on the forwarding signal, and determine the precoding used by the relay in uplink forwarding. information or beam information.
The method according to any one of claims 1, 2, and 6, characterized in that the channel transmission information includes time configuration information, uplink time, downlink time and idle time, and the determining the channel transmission information of the second network device ,include:

Determine the time configuration information of the second network device;

Indicate the uplink time, downlink time and idle time of the second network device;

The sending of the channel transmission information to the second network device includes:

The time configuration information, the uplink time, the downlink time and the idle time are sent to the second network device.
The method of claim 8, wherein determining the time configuration information of the second network device includes:

Determine a time indication unit corresponding to the second network device and status information of the second network device within the time indication unit.
The method according to claim 9, characterized in that determining the status information of the second network device within the time indication unit includes:

When the second network device is an RIS, the status information in the time indication unit is any one of uplink reflection or transmission, downlink reflection or transmission, and vacant;

When the second network device is a relay, the status information in the time indication unit is any one of uplink forwarding, downlink forwarding, and vacant.
The method according to claim 8, wherein the indicating the uplink time, downlink time and idle time of the second network device includes:

According to the time indication unit in the time configuration information, the time corresponding to the second network device is divided, and it is determined that the time corresponding to the second network device can be divided into uplink time, downlink time and idle time.
The method according to claim 8, wherein the indicating the uplink time, downlink time and idle time of the second network device includes:

According to the time indication unit in the time configuration information, the time window at the current time is divided, and the uplink time, downlink time and idle time of the second network device within the time window are determined.
The method according to any one of claims 2 to 12, characterized in that the beam measurement results include: reference signal received power RSRP, reference signal received quality RSRQ, reference signal indicated strength RSSI and signal to interference plus noise ratio SINR of at least one.
A precoding method, characterized in that it is applied to a second network device, and the method includes:

Receive channel transmission information sent by the first network device;

Signal processing is performed based on the channel transmission information.
The method according to claim 14, characterized in that the channel transmission information includes precoding information or beam information of the downlink channel, precoding information or beam information of the uplink channel, time configuration information, uplink time, downlink time and vacancy. time, receiving the channel transmission information sent by the first network device includes:

Receive precoding information or beam information of the downlink channel, precoding information or beam information of the uplink channel, time configuration information, uplink time, downlink time and idle time sent by the first network device;

The signal processing based on the channel transmission information includes:

Signal processing is performed based on the precoding information or beam information of the downlink channel, the precoding information or beam information of the uplink channel, the time configuration information, the uplink time, the downlink time and the idle time.
The method according to claim 15, characterized in that the precoding information or beam information based on the downlink channel, the precoding information or beam information of the uplink channel, the time configuration information, the uplink time , perform signal processing on the downlink time and the idle time, including:

When the second network device is an RIS, the precoding information or beam information of the uplink channel is used to generate a phase shift matrix of signal reflection or signal transmission during the uplink time, and the downlink channel is used during the downlink time. The precoding information or beam information of the channel generates a phase shift matrix for signal reflection or signal transmission, and the reflection or transmission function is turned off during the idle time;

When the second network device is a relay, the precoding information or beam information of the uplink channel is used during the uplink time to generate a precoding matrix or beam vector for signal forwarding, and the precoding information or beam vector for signal forwarding is generated during the downlink time. The precoding information or beam information of the downlink channel generates a precoding matrix or beam vector for signal forwarding, and the forwarding function is turned off during the idle time.
A precoding method, characterized in that it is applied to a terminal UE, and the method includes:

Report precoding matrix indication information or beam measurement results for the second network device to the first network device.
A precoding device, characterized in that it is applied to a first network device and includes:

A determining module, used to determine the channel transmission information of the second network device;

A sending module, configured to send the channel transmission information to the second network device.
A precoding device, characterized in that it is applied to a second network device, including:

A receiving module, configured to receive channel transmission information sent by the first network device;

A processing module, configured to perform signal processing based on the channel transmission information.
A precoding device, characterized in that it is applied to a terminal UE and includes:

A sending module, configured to report precoding matrix indication information or beam measurement results for the second network device to the first network device.
A precoding system, characterized in that it includes: a terminal UE, a first network device, and a second network device, wherein,

The first network device receives the precoding matrix indication information or beam measurement result for the second network device reported by the UE;

The first network device determines channel transmission information of the second network device based on the precoding matrix indication information or beam measurement results, and sends the channel transmission information to the second network device;

The second network device performs signal processing based on the channel transmission information.
A communication device, which includes: a transceiver; a memory; and a processor, respectively connected to the transceiver and the memory, and configured to control the wireless operation of the transceiver by executing computer-executable instructions on the memory. Transmit and receive signals, and can implement the method described in any one of claims 1-17.
A computer storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the method described in any one of claims 1-17 can be implemented.