WO2021063372A1

WO2021063372A1 - Resource determination method and device

Info

Publication number: WO2021063372A1
Application number: PCT/CN2020/119061
Authority: WO
Inventors: 刘凤威; 宋兴华; 邱晶
Original assignee: 华为技术有限公司
Priority date: 2019-09-30
Filing date: 2020-09-29
Publication date: 2021-04-08
Also published as: CN112584518A

Abstract

Embodiments of the present application disclose a resource determination method, the method comprises: determining a time-domain position of a distribution unit (DU) resource of a communication device; determining a multi-set time-domain position of a mobile terminal (MT) of the communication device, wherein the multi-set time-domain position of the MT is related to one or more of the following information: the time-domain position, resource type, resource property, dynamic resource indication information of the DU resource, and first information corresponding to each of a plurality of second information of the MT, the second information comprises receiving configuration information, transmitting configuration information or cell group information; and the first information comprises time difference, protection parameter or symbol index information. Hence, the implementation of the embodiments of the present application can accurately determine the time-domain position of a backhaul link on the basis of receiving configuration information, transmitting configuration information or cell group information of the MT.

Description

Method and device for determining resource

Cross-references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on September 30, 2019, the application number is 201910944792.0, and the application name is "a resource determination method and device", the entire content of which is incorporated into this application by reference . This application also requires the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201911061070.7, and the application name is "a resource determination method and device" on November 1, 2019. Part of the content is incorporated into this application by reference. in. This application also requires the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 202010444159.8, and the application name is "a resource determination method and device" on May 22, 2020, the entire content of which is incorporated into this application by reference in.

Technical field

This application relates to the field of communication technology, and in particular to a method and device for determining resources.

Background technique

With the continuous development of mobile communication technology, spectrum resources are becoming increasingly scarce. In order to improve spectrum utilization, future base station deployment will be more intensive. In addition, dense deployment can also avoid the appearance of coverage holes. Under the traditional cellular network architecture, the base station establishes a connection with the core network through optical fiber. However, in many scenarios, the deployment cost of optical fiber is very high. The relay node (RN) establishes a connection with the core network through a wireless backhaul link, which can save part of the fiber deployment cost.

Generally, the relay node establishes a wireless backhaul link with one or more upper-level nodes, and accesses the core network through the upper-level nodes. The upper-level node can perform certain control (for example, data scheduling, timing modulation, power control, etc.) on the relay node through a variety of signaling. In addition, the relay node can provide services for multiple subordinate nodes. The superior node of the relay node can be a base station or another relay node. The lower-level node of the relay node may be a user equipment (UE) or another relay node. In some cases, the upper-level node may also be called the upstream node, and the lower-level node may also be called the downstream node.

In-band relay is a relay solution in which the backhaul link and the access link share the same frequency band. Since no additional spectrum resources are used, the in-band relay has the advantages of high spectrum efficiency and low deployment cost. In-band relay generally has a half-duplex constraint. Specifically, a relay node cannot send a downlink signal to its lower-level node when receiving a downlink signal sent by its upper-level node, while a relay node is receiving an uplink signal sent by its lower-level node. It cannot send an uplink signal to its superior node. The in-band relay solution of the new generation wireless communication system (new radio, NR) is called integrated access and backhaul (IAB), and the relay node is called an IAB node.

When the IAB node is working normally, the access link (the link that communicates with the subordinate UE) and the backhaul link (the link that communicates with the upper-level node) perform resource multiplexing in a time division, space division, or frequency division manner. Take the time division multiplexing (TDM) scenario as an example. The backhaul link and the access link work at different times. Therefore, the IAB node needs to be between the transmission and reception of the backhaul link and the transmission and reception of the access link. Switch. In order to improve the resource utilization of the backhaul link and the access link, the IAB node needs to determine the set of available symbols for the backhaul link and the access link. In order to improve the resource utilization of the backhaul link and the access link, the IAB node needs to determine the time domain position of the backhaul link and the access link. How to determine the time domain position of the backhaul link is a problem that needs to be solved urgently.

Summary of the invention

The embodiments of the present application provide a resource determination method and device, which can accurately determine the time domain position of the backhaul link.

In the first aspect, an embodiment of the present application provides a method for determining a resource. The method includes: a first node determines a time domain position of a resource of a distribution unit DU of a communication device; and the first node determines multiple sets of time of a mobile terminal MT of the communication device. Domain location, multiple sets of time domain locations of MT are related to one or more of the following information: time domain location of DU resource, resource type of DU resource, resource nature of DU resource, DU dynamic resource indication information, MT’s The first information corresponding to each second information in the plurality of second information, the second information includes receiving configuration information, sending configuration information, or cell group information; wherein, the first information includes time difference, protection parameter or symbol index information, and The time difference is the time difference between the DU resource and the MT resource, the protection parameter is the protection parameter for switching between the DU resource and the MT resource, and the symbol index information is the index of the start symbol of the available resource of the MT, or the symbol index The information is the index of the end symbol of the available resources of the MT. The embodiments of the present application can accurately determine multiple sets of time domain positions of the MT based on the MT's receiving configuration information, sending configuration information, or cell group information, and then accurately determine the time domain position of the backhaul link.

In a possible implementation, the second information is receiving configuration information, or the second information is cell group information, the time difference is the time difference between the DU resource and the downlink resource of the MT, and the protection parameter is the difference between the DU resource and the MT. For protection parameters for switching between downlink resources, the symbol index information is the index of the start symbol of the downlink available resource of the MT, or the symbol index information is the index of the end symbol of the downlink available resource of the MT.

In this possible implementation, the first node may determine multiple sets of downlink time domain positions of the MT based on the first information corresponding to each cell group information (or received configuration information) in the multiple cell group information (or received configuration information). That is, the first node can determine different downlink time domain positions of the MT for different cell group information (or receiving configuration information).

In a possible implementation, the second information is receiving configuration information, and the multiple pieces of second information of the MT correspond to one cell group information of the MT. Based on this possible implementation manner, different time domain positions of the MT can be determined for different cell group information, and different time domain positions of the MT can be determined for different reception configuration information in the same cell group information.

In a possible implementation, the receiving configuration information is the receiving configuration information configured by the upper node of the communication device for the MT, or the receiving configuration information is the receiving configuration information of the control resource settings configured by the MT, or the receiving configuration information is The reception configuration information of the physical downlink shared channel PDSCH where the MT is configured.

In a possible implementation, the second information is the transmission configuration information of the MT, or the second information is the cell group information; the time difference is the time difference between the DU resource and the uplink resource of the MT, and the protection parameter is the DU resource and the MT uplink resource. For the protection parameters for switching between the uplink resources of the MT, the symbol index information is the index of the start symbol of the uplink available resource of the MT, or the symbol index information is the index of the end symbol of the uplink available resource of the MT.

In this possible implementation, the first node may determine multiple sets of uplink time domain positions of the MT based on the first information corresponding to each cell group information (or sending configuration information) in the multiple cell group information (or sending configuration information). That is, the first node can determine different uplink time domain positions of the MT for different cell group information (or sending configuration information).

In a possible implementation, the second information is sending configuration information, and the multiple pieces of second information of the MT correspond to one cell group information of the MT. Based on this possible implementation manner, different time domain positions of the MT can be determined for different cell group information, and different time domain positions of the MT can be determined for different transmission configuration information in the same cell group information.

In a possible implementation, the sending configuration information is the sending configuration information configured by the upper node of the communication device for the MT, or the sending configuration information is the sending configuration information of the physical uplink control channel PUCCH configured by the MT, or the sending configuration The information is the transmission configuration information of the sounding reference signal SRS transmission configured by the MT.

In a possible implementation, the first node is a communication device, or the first node is an upper node or host node of the communication device.

In a possible implementation, if the first node is the superior node or host node of the communication device, the first node may also receive the indication information reported by the communication device, and the indication information is used to indicate each of the multiple second messages of the MT The first information corresponding to the second information. Based on this optional implementation, the upper-level node or host node of the communication device can accurately determine multiple sets of time domain locations of the MT according to the first information corresponding to each of the multiple second information of the MT.

In a possible implementation, if the first node is a communication device, the first node may also determine the first information corresponding to each of the multiple second information of the MT.

In a possible implementation, if the first node is a communication device, after the first node determines multiple pieces of first information, it may also report indication information to the second node. The indication information is used to indicate multiple second pieces of the MT. The first information corresponding to each second information in the information, and the second node is an upper-level node or a host node of the communication device. Based on this optional implementation, the upper-level node or host node of the communication device can accurately determine multiple sets of time domain locations of the MT according to the first information corresponding to each of the multiple second information of the MT.

In a second aspect, an embodiment of the present application provides a method for determining protection parameters, applied to a first node, and the method includes: determining first information, where the first information includes a first protection parameter and/or a second protection parameter, The first protection parameter is the protection parameter for switching between the mobile terminal MT resource of the communication device and the uplink resource of the distribution unit DU, and the second protection parameter is the protection parameter for switching between the MT resource and the downlink resource of the DU; and the MT resource is determined according to the first information. The flexible resource of the DU is a protection parameter for switching, where the flexible resource includes a resource used for uplink and a resource used for downlink. Based on this implementation manner, the protection parameters for switching between MT resources and DU flexible resources can be accurately determined.

In a possible implementation, the first information includes the first protection parameter and the second protection parameter, and the protection parameter for switching between the MT resource and the flexible resource of the DU is the maximum or minimum of the first protection parameter and the second protection parameter. value. Based on this implementation manner, the protection parameters for switching between MT resources and DU flexible resources can be accurately determined.

In a possible implementation, the first information includes the first protection parameter. Before the first information is determined, the hypothetical resource type of the flexible resource of the DU can also be determined to be uplink; the MT resource and the flexible resource of the DU are determined according to the first information. The specific implementation of the switching protection parameter is: determining the first protection parameter as the protection parameter for switching between the MT resource and the flexible resource of the DU. Based on this implementation manner, the protection parameters for switching between the MT resource and the DU flexible resource can be accurately determined based on the assumed resource type of the flexible resource of the DU.

In a possible implementation, the first information includes the second protection parameter. Before the first information is determined, the hypothetical resource type of the flexible resource of the DU can also be determined to be downlink; the MT resource and the flexible resource of the DU are determined according to the first information. The specific implementation of the switching protection parameter is: determining the second protection parameter as the protection parameter for switching between the MT resource and the flexible resource of the DU. Based on this implementation manner, the protection parameters for switching between the MT resource and the DU flexible resource can be accurately determined based on the assumed resource type of the flexible resource of the DU.

In a possible implementation, the first node is a communication device, and can also receive configuration information sent by an upper node or a host node of the first node, where the configuration information is used to configure a hypothetical resource type of the flexible resource of the DU. Based on this possible implementation, the superior node or host node of the first node can configure the hypothetical resource type of the flexible resource of the DU for the first node, so that the first node can accurately determine the MT based on the hypothetical resource type of the flexible resource of the DU. The protection parameter for switching between the resource and the flexible resource of the DU.

In a possible implementation, the first node is a communication device, and reports the hypothetical resource type of the flexible resource of the DU to the superior node or the host node. The hypothetical resource type of the flexible resource of the DU can be assumed by the first node itself. Therefore, based on this possible implementation, the first node can report the hypothetical resource type of the flexible resource of the DU to the superior node or the host node, so that the superior node or the host node can accurately determine the MT based on the hypothetical resource type of the flexible resource of the DU. The protection parameter for switching between the resource and the flexible resource of the DU.

In a possible implementation, the first node is a communication device, and the first node may also report a protection parameter for switching between the MT resource and the flexible resource of the DU to the superior node or the host node. In this possible implementation, the upper-level node or the host node can obtain the protection parameters for switching between the MT resource reported by the first node and the flexible resource of the DU, so that the upper-level node or the host node can deduce the time domain position of the MT according to the protection parameters, and then According to the time domain position of the MT, resource scheduling is performed reasonably to avoid resource conflicts.

In a possible implementation, the first node is an upper-level node or a host node of the communication device, and sends configuration information to the communication device, where the configuration information is used to configure a hypothetical resource type of the flexible resource of the DU. Based on this possible implementation, the superior node or host node of the communication device can configure the hypothetical resource type of the flexible resource of the DU for the communication device, so that the communication device can accurately determine the MT resource and the hypothetical resource type of the DU according to the hypothetical resource type of the flexible resource of the DU. Protection parameters for flexible resource switching.

In a possible implementation, the first node is an upper node or host node of the communication device, and the first node may also receive the hypothetical resource type of the flexible resource of the DU reported by the communication device. In this possible implementation, the upper-level node or the host node can obtain the protection parameters for switching between the MT resource reported by the first node and the flexible resource of the DU, so that the upper-level node or the host node can deduce the time domain position of the MT according to the protection parameters, and then According to the time domain position of the MT, resource scheduling is performed reasonably to avoid resource conflicts.

In a third aspect, a device for determining a resource is provided. The device may be a first node, or a chip or chipset in the first node, where the first node may be a communication device or an upper-level node of the communication device Or host node. Wherein, the resource determining device may also be a chip system. The resource determining device can perform the method described in the first aspect. The function of the resource determining device can be realized by hardware, or can be realized by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above-mentioned functions. The unit can be software and/or hardware. For operations and beneficial effects performed by the resource determining device, reference may be made to the method and beneficial effects described in the first aspect above, and repetitions are not repeated here.

In a fourth aspect, a device for determining protection parameters is provided. The device may be a first node, or a chip or chipset in the first node, where the first node may be a communication device or an upper level of the communication device Node or host node. Wherein, the protection parameter determination device may also be a chip system. The protection parameter determination device can execute the method described in the second aspect. The function of the protection parameter determination device can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above-mentioned functions. The unit can be software and/or hardware. For the operations and beneficial effects performed by the protection parameter determination device, reference may be made to the method and beneficial effects described in the second aspect above, and the repetition will not be repeated.

In a fifth aspect, an embodiment of the present application provides a resource determining device. The resource determining device includes a communication interface and a processor. The communication interface is used for communication between the device and other devices, for example, data or signal transmission and reception. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface. The processor is used to call a set of programs, instructions or data to execute the method described in the first aspect. The device may also include a memory for storing programs, instructions or data called by the processor. The memory is coupled with the processor, and when the processor executes instructions or data stored in the memory, the method described in the first aspect can be implemented.

In a sixth aspect, an embodiment of the present application provides a protection parameter determination device. The protection parameter determination device includes a communication interface and a processor. The communication interface is used for communication between the device and other devices, such as data or signal transmission and reception. . Exemplarily, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface. The processor is used to call a set of programs, instructions or data to execute the method described in the second aspect above. The device may also include a memory for storing programs, instructions or data called by the processor. The memory is coupled with the processor, and when the processor executes instructions or data stored in the memory, the method described in the second aspect can be implemented.

In a seventh aspect, an embodiment of the present application provides a chip system. The chip system includes a processor and may also include a memory, configured to implement the method described in the first aspect or the second aspect. The chip system can be composed of chips, or it can include chips and other discrete devices.

In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium is used to store instructions, and when the instructions are executed, the method described in the first aspect or the second aspect is achieve.

In a ninth aspect, embodiments of the present application provide a computer program product including instructions, which when executed, enable the method described in the first aspect or the second aspect to be implemented.

In a tenth aspect, an embodiment of the present application provides a communication signal, including a first node and a second node, where the first node is an upper-level node of the second node, and the second node is as described in the third aspect or the fourth aspect. Mentioned device.

The embodiments of the present application can accurately determine multiple sets of time domain positions of the MT based on the MT's receiving configuration information, sending configuration information, or cell group information, and then accurately determine the time domain position of the backhaul link.

Description of the drawings

FIG. 1 is a schematic structural diagram of an IAB system provided by an embodiment of this application;

FIG. 2 is a schematic diagram of a backhaul link and an access link provided by an embodiment of this application;

FIG. 3 is a schematic diagram of the architecture of a wireless communication system provided by an embodiment of this application;

FIG. 4 is a schematic diagram of IAB node communication provided by an embodiment of this application;

FIG. 5 is a schematic structural diagram of an IAB node provided by an embodiment of this application;

FIG. 6 is a schematic diagram of a relationship between MT resources and DU resources provided by an embodiment of the application;

FIG. 7 is a schematic diagram of a time difference between an MT symbol and a DU symbol provided by an embodiment of this application;

FIG. 8 is a schematic diagram of a time difference between an MT frame and a DU frame according to an embodiment of the application;

FIG. 9 is a schematic diagram of protection symbols before and after a DU symbol provided by an embodiment of the application; FIG.

FIG. 10 is a schematic diagram of protection symbols before and after a DU symbol provided by an embodiment of this application;

FIG. 11 is a schematic diagram of protection symbols before and after a DU symbol provided by an embodiment of this application;

FIG. 12 is a schematic diagram of protection symbols before and after a DU symbol provided by an embodiment of the application; FIG.

FIG. 13 is a schematic diagram of protection symbols before and after a DU symbol provided by an embodiment of this application;

14A is a schematic diagram of a DU resource and a DU resource provided by an embodiment of this application;

FIG. 14B is a schematic diagram of a DU resource and a DU resource provided by an embodiment of this application;

FIG. 15 is a schematic flowchart of a method for determining a resource provided by an embodiment of the present application;

FIG. 16 is a schematic diagram of a DU resource and a DU resource provided by an embodiment of this application;

FIG. 17 is a schematic diagram of a time difference between an MT frame and a DU frame according to an embodiment of this application;

FIG. 18 is a schematic diagram of a DU resource and a DU resource provided by an embodiment of this application;

FIG. 19 is a schematic diagram of a DU resource and a DU resource provided by an embodiment of this application;

20 is a schematic flowchart of a method for determining protection parameters provided by an embodiment of the present application;

FIG. 21 is a schematic structural diagram of a resource determining apparatus provided by an embodiment of the present application;

FIG. 22 is a schematic structural diagram of another protection parameter determination device provided by an embodiment of the present application;

FIG. 23 is a schematic structural diagram of a resource determining apparatus provided by an embodiment of the present application;

FIG. 24 is a schematic structural diagram of another protection parameter determination device provided by an embodiment of the present application.

Detailed ways

The specific embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

In-band relay is a relay solution in which the backhaul link and the access link share the same frequency band. Since no additional spectrum resources are used, the in-band relay has the advantages of high spectrum efficiency and low deployment cost. In-band relay generally has a half-duplex constraint. Specifically, a relay node cannot send a downlink signal to its lower-level node when receiving a downlink signal sent by its upper-level node, while a relay node is receiving an uplink signal sent by its lower-level node. It cannot send an uplink signal to its superior node. The in-band relay solution of the new generation wireless communication system (new radio, NR) is called integrated access and backhaul (IAB), and the relay node is called an IAB node (IAB node).

As shown in Figure 1, the IAB node provides wireless access and wireless backhaul of access services for the UE. The IAB donor node (IAB host node) provides the wireless backhaul function to the IAB node and provides the interface between the UE and the core network. The IAB node is connected to the IAB donor node through a wireless backhaul link, so that the UE served by the IAB node is connected to the core network.

When the IAB node is working normally, the access link and the backhaul link perform resource multiplexing in a time division, space division or frequency division manner. Taking the time-division multiplexing (TDM) scenario as an example, the backhaul link and the access link work at different times. Therefore, the IAB node needs to perform the transmission and reception of the backhaul link and the access link. Switch between. When the backhaul link and the access link are switched without interval, that is, when the access link symbol and the backhaul link symbol are continuous, the IAB node has the highest resource utilization rate. However, in implementation, due to various factors such as the switching time of the power amplifier, the transmission distance, and non-ideal synchronization, the backhaul link and the access link cannot be switched without interval. Therefore, in order to improve the resource utilization of the backhaul link and the access link, the IAB node needs to accurately determine the available symbol set of the backhaul link and the access link.

The IAB node in NR can be divided into two parts, a mobile terminal (MT) and a distributed unit (DU). Among them, MT is used for IAB nodes to communicate with upper-level nodes, and DU is used for IAB nodes to communicate with lower-level nodes. The upper-level node can be a common base station (such as gNB) or another IAB node; and the lower-level node can be a UE. It can also be another IAB node.

The link between the MT and the upper-level node is called the parent BH link, the link between the DU and the lower-level IAB node is called the child BH link, and the DU and the subordinate UE The communication link is called an access link. Among them, the upper-level backhaul link includes the upper-level backhaul uplink (uplink, UL) and the upper-level backhaul downlink (downlink, DL), and the lower-level backhaul link includes the lower-level backhaul UL and the lower-level backhaul DL. The link includes access to UL and access to DL, as shown in Figure 2. In some cases, the lower-level backhaul link is also called an access link.

First, introduce the existing conclusions of NR IAB resource allocation:

MT resource: The MT resource of the IAB node can be configured as downlink (D), uplink (U), and flexible (Flexible, F) according to the transmission direction. These three resource types are also supported by existing UEs, so they can be indicated by existing signaling. The uplink resource of the MT is always used for uplink transmission, the downlink resource of the MT is always used for downlink transmission, and the flexible resource of the MT means that the flexible resource can be indicated as being used for uplink transmission or downlink transmission under the configuration of signaling.

DU resource: The DU resource of the IAB node includes three types: uplink, downlink, and flexible. Among them, the uplink resource of the DU is always used for uplink transmission, the downlink resource of the DU is always used for downlink transmission, and the flexible resource of the DU means that the resource can be used for uplink transmission or downlink transmission.

Further, the uplink, downlink and flexible resources of the DU can also be classified into two types: hard (hard, H) and soft (soft, S) according to resource scheduling conditions.

DU hard resource: indicates the resource that DU is always available.

DU soft resource: Whether the DU is available depends on the instructions of the superior node.

In addition, the DU may also include Null resources.

In summary, the MT resource of the IAB node has 3 resource types (that is, three types based on the transmission direction: D/U/F), and the DU resource has 7 resource types (that is, three resource types (D/U/F) ) And two resource types (H/F), a total of 6 types, and a resource type N, a total of 7 types), 3 resource types of MT resources and 7 resource types of DU resources Later, when the multiplexing mode of MT resource and DU resource is time division multiplexing TDM, the behavior of all possible resource combinations of DU and MT can be as shown in Table 1. among them:

-"MT:Tx" means that the MT should transmit after being scheduled;

-"DU:Tx" indicates that DU may be transmitted;

-"MT: Rx" means that the MT is capable of receiving (if there is a signal that needs to be received);

-"DU:Rx" indicates that DU may schedule the uplink transmission of the lower node;

-"MT: Tx/Rx" means that the MT should transmit or receive after being scheduled, but the transmission and reception do not occur at the same time;

-"DU:Tx/Rx" means that DU may transmit or receive transmission from lower-level nodes, but transmission and reception do not occur at the same time;

-"IA" means that the DU resource is explicitly or implicitly indicated as available;

-"INA" means that the DU resource is explicitly or implicitly indicated as unavailable;

-"MT:NULL" means that the MT does not send and does not have to have the receiving capability;

-"DU:NULL" means that DU does not send and does not receive transmissions from lower-level nodes;

Table 1

In order to better understand the embodiments of the present application, a communication system applicable to the embodiments of the present application will be described below.

The resource determination method provided by the embodiment of the present application can be applied to a wireless communication system with a relay node, as shown in FIG. 3. It should be understood that FIG. 3 is only an exemplary illustration, and does not specifically limit the number of terminal devices and relay devices included in the wireless communication system. In NR, the relay device is generally called an IAB node. In LTE, the relay device is generally called RN.

The communication system shown in Figure 3 can be in various communication systems, for example, the Internet of Things (IoT), narrowband Internet of Things (NB-IoT), and long term evolution (long term evolution). , LTE), it can also be a fifth-generation (5G) communication system, it can also be a hybrid architecture of LTE and 5G, it can also be a 5G new radio (NR) system, a global system for mobile communication, GSM), mobile communication system (universal mobile telecommunications system, UMTS), code division multiple access (code division multiple access, CDMA) system, and new communication systems that will appear in the development of future communications.

The network device in the embodiment of the present application is used to connect the terminal to the wireless network. The network device may be called a base station, and may also be called a radio access network (RAN) node (or device). For example, the network equipment can be a next-generation Node B (gNB), a transmission reception point (TRP), an evolved Node B (evolved Node B, eNB), and a radio network controller (radio network controller). network controller, RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B) , HNB), baseband unit (BBU), or wireless fidelity (Wifi) access point (AP), etc.

In the embodiments of the present application, the relay node is one of the aforementioned base stations or terminal devices with forwarding function, or it can be an independent device form, it can also be a vehicle-mounted device, or set on a mobile object. installation. The name of the relay node can be the relay node (RN), the relay transmission and reception point (rTRP), the IAB node (IAB node), etc.; the superior node of the relay node can be gNB (including gNB-DU, gNB-CU, etc.) ), it can also be another relay node. The IAB node is a specific name of the relay node, which does not limit the solution of this application. The IAB node of this application can also be called a relay node (RN) or a transmission and reception point (TRP) , Relay sending and receiving point (relaying TRP), etc.

A relay device, especially an IAB node, may include a mobile terminal (MT) function and a distributed unit (DU) function. That is, the IAB node communicates with the superior node through the MT. The DU is the base station function module of the IAB node, which is used to implement the radio link control (RLC) layer, the media access control (MAC) layer and the physical The function of the layer is mainly responsible for scheduling, physical signal generation and transmission, that is, the IAB node communicates with the lower-level node and UE through the DU, as shown in Figure 4. Both the MT and DU of the IAB node have a complete transceiver module, and there is an interface between the two. However, it should be noted that MT and DU are logic modules. In practice, the two can share some sub-modules, for example, they can share transceiver antennas, baseband processing modules, etc., as shown in Figure 5.

The terminal device involved in the embodiments of the present application is an entity on the user side for receiving or transmitting signals. The terminal device may be a device that provides voice and/or data connectivity to the user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and the like. The terminal can also be other processing equipment connected to the wireless modem. The terminal can communicate with one or more core networks through a radio access network (RAN). The terminal can also be called a wireless terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, Remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), user equipment (user device), or user equipment (user equipment), etc. The terminal equipment can be a mobile terminal, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal. For example, it can be a portable, pocket-sized, handheld, built-in computer or vehicle-mounted mobile device, which is connected with wireless The access network exchanges language and/or data. For example, the terminal device can also be a personal communication service (PCS) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (personal digital assistant, PDA), and other equipment. Common terminal devices include, for example, mobile phones, tablet computers, notebook computers, handheld computers, mobile internet devices (MID), wearable devices, such as smart watches, smart bracelets, pedometers, etc., but this application is implemented Examples are not limited to this.

It should be understood that in the embodiments of the present application, "at least one" refers to one or more, and "multiple" refers to two or more. "And/or" describes the association relationship of the associated object, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects before and after are in an "or" relationship. "The following at least one (item)" or similar expressions refers to any combination of these items, including any combination of single item (item) or plural items (item). For example, at least one of a, b, or c can mean: a, b, c, a and b, a and c, b and c, or a, b and c, where a, b, c It can be single or multiple. In addition, it should be understood that in the description of this application, words such as "first" and "second" are only used for the purpose of distinguishing description, and cannot be understood as indicating or implying relative importance, nor can it be understood as indicating Or imply the order.

Before introducing the resource determination method provided by the embodiment of this application, we first introduce a method for determining protection parameters. It should be noted that the method for determining protection parameters and the resource determination method provided by the embodiments of this application can be implemented as two separate solutions. , Can also be combined as a plan for implementation, and there is no specific limitation here. In this application, the communication device is an IAB node as an example for description.

In the embodiment of the present application, the protection parameter is a protection parameter for switching between DU resources and MT resources. The protection parameters for switching between DU resources and MT resources can be understood as the guard period for switching between DU resources and MT resources, and the number of guard symbols for switching between DU resources and MT resources. Or the available symbol index deviation for switching between the DU resource and the MT resource. The "deviation" in the embodiment of the present application may also be referred to as "offset".

The guard interval for switching between the DU resource and the MT resource may specifically be: the guard interval when the MT resource is switched to the DU resource, or the guard interval when the DU resource is switched to the MT resource. The guard interval for switching the MT resource to the DU resource refers to the overlap time of the DU resource plus the switching time and the MT resource, and the switching time is the shortest time required for the MT resource to switch to the DU resource. The guard interval for switching the DU resource to the MT resource refers to the overlap time between the DU resource plus the switching time and the MT resource, and the switching time is the shortest time required for the DU resource to switch to the MT resource.

The number of protection symbols for switching between DU resources and MT resources may specifically be: the number of protection symbols for switching from MT resources to DU resources, or the number of protection symbols for switching from DU resources to MT resources. The number of protection symbols for switching MT resources to DU resources refers to the symbols whose MT resources are not available in the previous specific direction (D/U/F) when DU resources in a specific direction (D/U/F) are transmitted quantity. The number of protection symbols for switching from DU resources to MT resources refers to the symbols whose MT resources are not available in a specific direction (D/U/F) when DU resources in a specific direction (D/U/F) are transmitted. .

The available symbol index deviation for switching between the DU resource and the MT resource may specifically be: the available symbol index deviation for switching from the MT resource to the DU resource, or the available symbol index deviation for switching from the DU resource to the MT resource. The available symbol index deviation for switching from MT resource to DU resource refers to the index of the start symbol of the DU resource (for example, the first symbol in a continuous segment of DU available symbols) and the end symbol of the MT resource (for example, a continuous segment of MT). The deviation between the index of the last available symbol in the available symbols). The available symbol index deviation for switching from DU resource to MT resource refers to the index of the end symbol of the DU resource (for example, the last symbol in a continuous period of DU available symbols) and the start symbol of the MT resource (for example, a continuous period of MT available symbols). The deviation between the index of the first available symbol in the symbol). Here, the available symbols of the DU include symbols that are always available to the DU, that is, the hard symbols of the DU, and also include the available symbols of the DU determined through dynamic signaling, for example, the soft symbols of the DU indicated as available through dynamic signaling.

It should be understood that "MT resource" is only an exemplary naming of the transmission resource used by the IAB node to communicate with the upper-level node of the IAB node. In practical applications, the transmission resource used by the IAB node to communicate with the upper-level node of the IAB node can also be named For others, such as X resources, if the X resources can be used for communication between the IAB node and the upper-level node of the IAB node, the X resources can be considered as the MT resources involved in the embodiment of the present application. Similarly, "DU resource" is only an exemplary naming of the transmission resource used by the IAB node to communicate with the subordinate node of the IAB node. In practical applications, the transmission resource used by the IAB node to communicate with the subordinate node of the IAB node can also be named Others, such as A resources, if the A resource can be used for the IAB node to communicate with the subordinate node of the IAB node, the A resource can be considered as the DU resource involved in the embodiment of the present application.

For ease of understanding, the following first gives a brief overview of the resource configuration of the MT and DU of the IAB node:

The semi-static type configuration (D/U/F) of the MT resource of the IAB node is configured by the donor node or the superior node of the IAB node through semi-static signaling. For example, the semi-static signaling can be radio resource control (radio resource control). , RRC) signaling, etc.

The semi-static resource type (D/U/F) of the DU resource of the IAB node is configured by the donor node or the superior node of the IAB node through semi-static signaling or interface messages. Illustratively, the interface message can be transmitted through the F1-AP interface News etc.

The nature of DU resources (hard and soft) is explicitly configured. That is, the donor node or superior node of the IAB node configures the DU resource (D/U/F) as hard and soft through semi-static signaling or interface messages. In this case, the MT available/unavailable resources of the IAB node can be implicitly derived from the hard/soft resources of the DU of the IAB node.

In addition, the Null resource of the DU is also configured by the donor node or superior node of the IAB node through semi-static signaling or interface messages.

The following is an example to illustrate the principle of DU's hard/soft resources to derive MT's available/unavailable resources. First consider in the case of TDM:

The hard resource of the DU has the following definition: the hard resource is the resource that is always available to the DU. That is, the IAB node can always communicate with the lower-level nodes on the hard resources of the DU, regardless of the scheduling configuration of the MT. Therefore, the relationship between the hard/soft resources of the DU and the available/unavailable resources of the MT is shown in Figure 6. Figure 6 shows 7 time slots, among them,

time slots

0 and 6 are hard time slots of the DU, and the DU can always be used. Assuming TDM multiplexing, the corresponding MT time slot is an unusable time slot. The time slots 1 to 5 in the figure are soft time slots of the DU, and the corresponding MT should be an available time slot.

It should be understood that the availability of the soft resources of the DU will be determined through the dynamic indication or scheduling of the upper-level node, and some of the soft resources will be indicated as available. Assuming TDM multiplexing, when a soft resource is indicated as available, its corresponding MT resource is converted to unavailable. Therefore, when the IAB node derives the available/unavailable resources of the MT, it also needs to consider the result of dynamic resource indication or scheduling signaling.

In a possible implementation, when the DU resource configuration information of the IAB node is configured by the donor node, the upper-level node also needs to obtain the DU resource configuration information to determine the available/unavailable resources of the MT, so as to avoid scheduling conflicts. In this application, the DU resource configuration information of the IAB node includes resource type (D/U/F) information and resource nature (H/S) information. In order for the superior node to obtain the resource configuration information of the IAB node, the donor node may send the DU resource configuration information of the IAB node to the DU of the superior node. In another possible implementation, the IAB node reports its own DU resource configuration information to the superior node. The IAB node and its superior node derive the available resources and unavailable resources of the IAB node MT according to the DU configuration information of the IAB node, so as to perform the transmission of the backhaul link.

It should be understood that the superior node also needs to consider the result of dynamic resource indication or scheduling signaling when deriving the available/unavailable resources of the node in the IAB node MT. Since the dynamic indication or scheduling is generally sent by the upper-level node, the upper-level node can learn the result of the dynamic indication or scheduling.

Generally speaking, the derivation of the available/unavailable resources of the MT has the following principle: the reception or transmission of the MT does not affect the use of the hard resources and/or the soft resources indicated as available by the DU. Here, the reception or transmission of the MT includes at least the reception or transmission of the unicast signal by the IAB node MT.

The derivation given in Figure 6 only considers the ideal switching between MT resources and DU resources. In practice, due to the timing deviation between MT and DU resources and the switching time of IAB nodes, the MT resources and DU resources are not ideally switched, that is, MT. When the resource and DU resource are switched, some protection symbols will be introduced. The protection symbols can neither be used for MT transmission, nor for DU transmission.

The method for determining the protection parameters provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In actual deployment, due to propagation delay and non-ideal factors, the MT symbol and the DU symbol are not strictly aligned. Therefore, first define multiple time differences between MT resources and DU resources, as shown in Figure 7:

The time difference between the MT downlink symbol and the DU downlink symbol (hereinafter referred to as Δ _DD ). In general, the downlink reception of the MT lags behind the downlink transmission of the DU, but it is not ruled out that in some scenarios, the downlink reception of the MT may precede the downlink transmission of the DU. Therefore, Δ _DD may be a signed value (that is, it may be a positive number or a negative number), and its specific sign depends on the strict definition of the time difference. In the embodiment of the present application, to MT downlink reception time lags DU downlink transmission as an example, and assuming Δ _DD> 0. In general, there is Δ _DD = T _p + T _e , where T _p is the transmission delay between the IAB node and the upper-level node, and T _e includes the non-ideal factors of synchronization, such as the timing of the IAB node DU and the upper-level node. error.

The time difference between the MT uplink symbol and the DU uplink symbol (hereinafter referred to as Δ _UU ). In general, the uplink transmission of the MT is ahead of the uplink reception of the DU. But it does not rule out that in some scenarios, the uplink transmission of the MT will lag behind the uplink reception of the DU. Therefore, Δ _UU may also be a signed value (that is, it may be a positive number or a negative number), and its specific sign depends on the strict definition of the time difference. In the embodiment of the present application, _ΔUU is the time when MT uplink transmission is ahead of DU uplink reception as an example for description, and _ΔUU <0 is assumed. In general, Δ _UU = Δ _DD + T _g -TA, where T _g is the time when the uplink receiving frame of the IAB node DU is ahead of the DU downlink sending frame, and TA is the timing used by the IAB node MT for uplink transmission Advance amount.

The time difference between the MT downlink symbol and the DU uplink symbol (hereinafter referred to as Δ _DU ). In general, the downlink reception of the MT lags behind the uplink reception of the DU. But it does not rule out that in some scenarios, the downlink reception of the MT may be earlier than the uplink reception of the DU. Therefore, Δ _DU may also be a signed value (that is, it may be a positive number or a negative number), and its specific sign depends on the strict definition of the time difference. In the embodiment of the present application, _{the time during which the downlink reception with Δ DU} is MT lags behind the uplink reception of the DU is taken as an example for description, and it is assumed that Δ _DU > 0. In general, there is Δ _DU =Δ _DD +T _g .

The time difference between the MT uplink symbol and the DU downlink symbol (hereinafter referred to as Δ _UD ). Generally, the uplink transmission of MT is ahead of the downlink transmission of DU. But it does not rule out that in some scenarios, the uplink transmission of the MT will lag behind the downlink transmission of the DU. Therefore, Δ _UD may also be a signed value (that is, it may be a positive number or a negative number), and its specific sign depends on the strict definition of the time difference. In the embodiment of the present application, _ΔUD is the time when the MT uplink transmission is ahead of the DU uplink reception as an example for description, and it is assumed that _ΔUD <0. In general, there is Δ _UU =Δ _DD -TA.

It should be noted that the time difference shown in FIG. 7 is the time difference between the MT symbol and the DU symbol, but in the protocol, the time difference between the MT resource and the DU resource generally represents the time difference between the MT frame or subframe and the DU frame or subframe. Take Δ _DD as an example for illustration. As shown in Figure 8, Δ _DD represents the lag of the start time of the MT frame relative to the start time of the DU frame, that is, the start time of the MT frame minus the start time of the corresponding DU frame . It should be understood, Δ _DD DU also be defined as the frame start time by subtracting the start time MT corresponding to the frame.

The time difference between the MT resource and the DU resource in the embodiment of this application may refer to the time difference between the MT symbol and the DU symbol, the time difference between the MT frame and the DU frame, or the time difference between the MT subframe and the DU subframe, of course. It can be the time difference of other time units, which is not specifically limited here. It should be noted that the time difference in the embodiment of the present application may also be referred to as time offset, time misalignment, and so on.

In addition, in addition to the time difference between MT resources and DU resources, the switching time between MT transmission and DU transmission is also important information that affects IAB node resource reuse. The switching time between MT transmission and DU transmission mainly includes the power amplifier off time required for sending to receiving (that is, the switching time from sending to receiving), and the power amplifier on time required for the conversion from receiving to sending (that is, the switching time from receiving to sending). , The gain adjustment time of receiving to receiving conversion (that is, the switching time from receiving to receiving) or the power adjusting time of sending to sending conversion (that is, the switching time of sending to sending). For the switch from receiving to receiving, when the power difference between the received signal of the MT and the received signal of the DU is small, the switching time between the two can be ignored, and when the power difference between the two received signals is large, the switching time between the two may be longer. Similarly, for the switch from transmission to transmission, when the difference between the transmission power of the MT and the transmission power of the DU is small, the switching time between the two can be ignored, and when the transmission power of the two signals differ greatly, the switching time between the two may be Longer. It should be understood that the time required for the various handovers described above is known by the IAB node, and the protocol may also define the maximum value required for various handovers.

In the embodiment of the present application, when the IAB node determines the protection parameter, the protection parameter may be determined according to the time difference between the DU resource and the MT resource. For example, for the handover between DU uplink resources and MT downlink resources (that is, handover from reception to reception), when the power difference between the received signal of the DU and the received signal of the MT is small, the switching time between the two can be ignored. The time difference between the MT downlink resource and the MT downlink resource determines the protection parameters for switching between the DU uplink resource and the MT downlink resource. For another example, for the switching between DU downlink resources and MT uplink resources (that is, the switching from transmission to transmission), when the power difference between the DU transmission signal and the MT transmission signal is small, the switching time between the two can be ignored. The time difference between the downlink resource and the MT uplink resource determines the protection parameters for switching between the DU downlink resource and the MT uplink resource.

Alternatively, the protection parameters for switching between the DU resource and the MT resource can also be determined according to the time difference between the DU resource and the MT resource, and the switching time between the DU resource and the MT resource. For switching between sending and receiving, for example, when an IAB node switches between DU downlink resources and MT downlink resources, it can be based on the time difference between DU downlink resources and MT downlink resources and the difference between DU downlink resources and MT downlink resources. The switching time determines the protection parameters for switching between DU downlink resources and MT downlink resources. When the IAB node switches between DU uplink resources and MT uplink resources, it can determine DU uplink resources and MT uplink resources according to the time difference between DU uplink resources and MT uplink resources and the switching time between DU uplink resources and MT uplink resources Protection parameters to switch between.

For the handover from reception to reception, for example, a handover between DU uplink resources and MT downlink resources. When the MT received signal and the DU received signal power are significantly different, the switching time between the two cannot be ignored. It can be determined according to the time difference between the DU uplink resource and the MT downlink resource and the switching time between the DU uplink resource and the MT downlink resource. Protection parameters for switching between DU uplink resources and MT downlink resources.

For the switch from sending to sending, another example is the switch between DU downlink resources and MT uplink resources. When the power difference between the MT transmission signal and the DU transmission signal is large, the switching time between the two cannot be ignored. It can be determined according to the time difference between the DU downlink resource and the MT uplink resource and the switching time between the DU downlink resource and the MT uplink resource. Protection parameters for switching between DU downlink resources and MT uplink resources.

The following describes in detail how to determine the protection parameters between DU resources and MT resources in combination with specific scenarios.

Scenario 1: Determine protection parameters for switching between MT downlink resources and DU downlink resources.

Since the IAB node performs a receiving action on the MT downlink resource, and performs a sending action on the DU downlink resource. Therefore, when the IAB node switches between the MT downlink resource and the DU downlink resource, it needs to perform a transmit and receive switch or a transmit and receive switch. IAB node may be based on the time difference Δ _DD DU MT downlink resources and downlink resources, MT receiver to the switching time T1 DU transmitted, to determine protection switching MT downlink resource parameter DU downlink resources. Alternatively, LAB MT downlink node based on the time and resources of downlink resources DU difference Δ _DD and DU sent to the MT receives the switching time t2, switching determination DU downlink resource protection parameters to MT downlink resources.

1) Determine the guard interval for switching between DU downlink resources and MT downlink resources.

The guard interval for switching between the DU downlink resource and the MT downlink resource may specifically be: the guard interval for switching the MT downlink resource to the DU downlink resource, or the guard interval for switching the DU downlink resource to the MT downlink resource.

9, the downlink resources for the MT to handover, downlink resources DU DU Gache downlink resources for time t1 and time overlapping downlink resources for the MT t1 + Δ _DD. To avoid resource conflicts, can not be performed within this period MT signal reception, the present application this overlapping time t1 + Δ _DD called MT downlink resource switched to a protection interval DU downlink resources.

9, for a downlink resource to DU MT downlink resource handover, downlink resource Gache DU for time t2 and time overlapping downlink resources for the MT t2-Δ _DD. To avoid resource conflicts, can not be performed within this period MT signal reception, the present application this overlapping time t2-Δ _DD DU downlink resource called a guard interval is switched to the MT downlink resources.

2) Determine the number of protection symbols for switching between DU downlink resources and MT downlink resources.

The number of protection symbols for switching between the DU downlink resource and the MT downlink resource may specifically be: the number of protection symbols for switching the MT downlink resource to the DU downlink resource, that is, the number a of the protection symbols before the DU downlink resource. Or, the number of protection symbols for switching between the DU downlink resource and the MT downlink resource may specifically be: the number of protection symbols for switching the DU downlink resource to the MT downlink resource, that is, the number of protection symbols b after the DU downlink resource.

E.g,

In the embodiment of the present application, Δt may be the length of one symbol.

In an exemplary description, as shown in FIG. 9, the symbol 4 is used for DU. If t1+Δ _{DD is} not greater than the length of one symbol, Δ _{DD is} less than t2, and t2-Δ _{DD is} not greater than the length of one symbol, we can get

Indicates that the number of protection symbols before the DU symbol is 1, and the number of protection symbols after the DU symbol is 1. Therefore, at the MT, except for the symbol 4 whose index overlaps, the symbol 3 and the symbol 5 are also unavailable.

In another exemplary description, as shown in FIG. 10, the symbol 4 is used for DU. If the time difference between the MT resource and the DU resource is greater, the MT symbol with the same index as the DU symbol may be available. In this case, the protection symbol after the DU symbol may be recorded as a negative number. For example, if t1+Δ _{DD is} greater than the length of two symbols and not greater than the length of three symbols, Δ _{DD is} greater than t2, and │t2-Δ _DD │ is greater than the length of one symbol, you can get

It means that the number of protection symbols before the DU symbol is 3, and the number of protection symbols after the DU symbol is -1. Therefore, at the MT, symbol 4 with the same index is available, and symbols 1 to 3 are not available.

3) Determine the available symbol index deviation for switching between DU downlink resources and MT downlink resources.

The available symbol index deviation for switching between the DU downlink resource and the MT downlink resource may specifically be: the available symbol index deviation for switching from the MT downlink resource to the DU downlink resource, that is, the index of the start symbol of the DU downlink resource and the index of the MT downlink resource. The deviation e between the indexes of the end symbols. Or the available symbol index deviation for switching between the DU downlink resource and the MT downlink resource may specifically be: the available symbol index deviation for switching from the DU downlink resource to the MT downlink resource, that is, the index of the end symbol of the DU downlink resource and the index of the MT downlink resource The deviation f between the indexes of the starting symbol. Deviation e=a+1, deviation f=b+1.

In an exemplary illustration, as shown in FIG. 9, the index of the start symbol of the DU downlink resource is 4, and the index of the end symbol of the MT downlink resource is 2. The deviation e between the index of the start symbol of the DU downlink resource and the index of the end symbol of the MT downlink resource is 2. The index of the end symbol of the DU downlink resource is 4, the index of the start symbol of the MT downlink resource is 6, and the deviation f between the index of the end symbol of the DU downlink resource and the index of the start symbol of the MT downlink resource is 2.

In another exemplary description, as shown in FIG. 10, the index of the start symbol of the DU downlink resource is 4, and the index of the end symbol of the MT downlink resource is 0. The deviation e between the index of the start symbol of the DU downlink resource and the index of the end symbol of the MT downlink resource is 4. The index of the end symbol of the DU downlink resource is 4, the index of the start symbol of the MT downlink resource is 4, and the deviation f between the index of the end symbol of the DU downlink resource and the index of the start symbol of the MT downlink resource is 0.

Scenario 2: Determine protection parameters for switching between MT downlink resources and DU uplink resources.

Since the actions performed by the IAB node for MT downlink resources and DU uplink resources are all receiving, the IAB node can _{determine the MT downlink resource switching based on the time difference Δ DU between the} MT downlink resource and the DU uplink resource and the switching time t3 from MT reception to DU reception Protection parameters of the uplink resources to the DU. Alternatively, the LAB node may determine the protection parameter for switching the DU uplink resource to the MT downlink resource _{based on the time difference Δ DU between the} MT downlink resource and the DU uplink resource, and the switching time t4 from the DU reception to the MT reception. Wherein, the switching time from MT reception to DU reception may be the same as the switching time from DU reception to MT reception, that is, t3 may be equal to t4. Or, t3 may not be equal to t4.

1) Determine the guard interval for switching between DU uplink resources and MT downlink resources.

The guard interval for switching between the DU uplink resource and the MT downlink resource may specifically be: the guard interval for switching the MT downlink resource to the DU uplink resource, or the guard interval for switching the DU uplink resource to the MT downlink resource.

For the switch from MT downlink resource to DU uplink resource, the overlap time of DU uplink resource plus switching time t3 and MT downlink resource is t3+Δ _DU . In order to avoid resource conflicts, the MT cannot receive signals during this period of time. This overlap time t3+ _{ΔDU is} referred to as the guard interval for switching the MT downlink resource to the DU uplink resource in this application.

For the switch from DU uplink resource to MT downlink resource, the overlap time of the DU uplink resource plus the switching time t4 and the MT downlink resource is t4-Δ _DU . In order to avoid resource conflicts, the MT cannot perform signal reception during this period of time. This overlapping time t4- _{ΔDU is} referred to as the guard interval for switching the DU uplink resource to the MT downlink resource in this application.

2) Determine the number of protection symbols for switching between DU uplink resources and MT downlink resources.

The number of protection symbols for switching between the DU uplink resource and the MT downlink resource may specifically be: the number of protection symbols for switching the MT downlink resource to the DU uplink resource, that is, the number a of the protection symbols before the DU uplink resource. Or, the number of protection symbols for switching between the DU uplink resource and the MT downlink resource may specifically be: the number of protection symbols for switching the DU uplink resource to the MT downlink resource, that is, the number of protection symbols b after the DU uplink resource.

E.g,

In one implementation, the time taken to switch from receiving to receiving is relatively short, so the switching time from receiving to receiving can be ignored, that is, t3 and t4 can be equal to zero. In an exemplary illustration, as shown in FIG. 11, the symbol 4 is used for DU. If t3+Δ _{DU is} not greater than the length of one symbol, and t4-Δ _{DU is} not greater than the length of one symbol, that is

Indicates that the number of protection symbols before the DU symbol is 1, and the number of protection symbols after the DU symbol is 0. Therefore, at the MT, except for the symbol 4 whose index overlaps, the symbol 3 is also unavailable.

3) Determine the available symbol index deviation for switching between the DU uplink resource and the MT downlink resource.

The available symbol index deviation of the DU uplink resource and the MT downlink resource may specifically be: the available symbol index deviation of switching from the MT downlink resource to the DU uplink resource, that is, the index of the start symbol of the DU uplink resource and the index of the end symbol of the MT downlink resource The deviation between e. Or, the available symbol index deviation of the DU uplink resource and the MT downlink resource may specifically be: the available symbol index deviation of switching from the DU uplink resource to the MT downlink resource, that is, the index of the end symbol of the DU uplink resource and the start symbol of the MT downlink resource The deviation between the indexes f. Deviation e=a+1, deviation f=b+1.

For example, as shown in FIG. 11, the index of the start symbol of the DU uplink resource is 4, and the index of the end symbol of the MT downlink resource is 2. The deviation e between the index of the start symbol of the DU uplink resource and the index of the end symbol of the MT downlink resource is 2. The index of the end symbol of the DU uplink resource is 4, the index of the start symbol of the MT downlink resource is 5, and the deviation f between the index of the end symbol of the DU uplink resource and the index of the start symbol of the MT downlink resource is 1.

Scenario 3: Determine protection parameters for switching between MT uplink resources and DU uplink resources.

Since the IAB node performs a sending action on MT uplink resources and a receiving action on DU uplink resources, when switching between MT uplink resources and DU uplink resources, the IAB node needs to perform a transmit and receive switch or a transmit and receive switch. The IAB node may determine the protection parameter for switching the MT uplink resource to the DU uplink resource _{based on the time difference Δ UU between the} MT uplink resource and the DU uplink resource, and the switching time t1 sent by the MT to the DU reception. Alternatively, the LAB node may determine the protection parameter for switching the DU uplink resource to the MT uplink resource _{based on the time difference Δ UU between the} MT uplink resource and the DU uplink resource, and the switching time t2 from the DU reception to the MT transmission.

1) Determine the guard interval for switching between DU uplink resources and MT uplink resources.

The guard interval for switching between the DU uplink resource and the MT uplink resource may specifically be: the guard interval when the MT uplink resource is switched to the DU uplink resource, or the guard interval when the DU uplink resource is switched to the MT uplink resource.

As shown in Fig. 12, for the switch from MT uplink resource to DU uplink resource, the overlap time of DU uplink resource plus switching time t1 and MT uplink resource is t1+ _ΔUU . In order to avoid resource conflicts, the MT cannot perform signal transmission during this period of time, and this overlapping time t1+ _{ΔUU is} referred to as the guard interval for switching the MT uplink resource to the DU uplink resource in this application.

As shown in FIG. 12, for the switching from DU uplink resource to MT uplink resource, the overlap time of DU uplink resource plus switching time t2 and MT uplink resource is t2- _ΔUU . In order to avoid resource conflicts, the MT cannot perform signal transmission during this period of time. This overlap time t2- _{ΔUU is} referred to as the guard interval for switching the DU uplink resource to the MT uplink resource in this application.

2) Determine the number of protection symbols for switching between DU uplink resources and MT uplink resources.

The number of protection symbols for switching between the DU uplink resource and the MT uplink resource may specifically be: the number of protection symbols for switching the MT uplink resource to the DU uplink resource, that is, the number a of the protection symbols before the DU uplink resource. The number of protection symbols for switching between the DU uplink resource and the MT uplink resource may specifically be: the number of protection symbols for switching the DU uplink resource to the MT uplink resource, that is, the number of protection symbols b after the DU uplink resource.

E.g,

In an exemplary description, if t1+Δ _{UU is} not greater than the length of one symbol, and t2-Δ _{UU is} not greater than the length of one symbol, that is

It can be defined that the number of protection symbols before the DU symbol is 1, and the number of protection symbols after the DU symbol is 1. When DU uses symbol 4, at MT, except for symbol 4 whose index overlaps, symbol 3 and symbol 5 are also unavailable, as shown in Figure 12.

3) Determine the available symbol index deviation for switching between the DU uplink resource and the MT uplink resource.

The available symbol index deviation for switching between the DU uplink resource and the MT uplink resource may specifically be: the available symbol index deviation for switching from the MT uplink resource to the DU uplink resource, that is, the index of the start symbol of the DU uplink resource and the index of the MT uplink resource. The deviation e between the indexes of the end symbols. Or the available symbol index deviation for switching between the DU uplink resource and the MT uplink resource may specifically be: the available symbol index deviation for switching from the DU uplink resource to the MT uplink resource, that is, the index of the end symbol of the DU uplink resource and the index of the MT uplink resource. The deviation f between the indexes of the starting symbol. Deviation e=a+1, deviation f=b+1.

For example, as shown in FIG. 12, the index of the start symbol of the DU uplink resource is 4, and the index of the end symbol of the MT uplink resource is 2. The deviation e between the index of the start symbol of the DU uplink resource and the index of the end symbol of the MT uplink resource is 2. The index of the end symbol of the DU uplink resource is 4, the index of the start symbol of the MT uplink resource is 6, and the deviation f between the index of the end symbol of the DU uplink resource and the index of the start symbol of the MT uplink resource is 2.

Scenario 4: Determine protection parameters for switching between MT uplink resources and DU downlink resources.

Because the actions performed by the IAB node on the MT uplink resources and the DU downlink resources are all sending. IAB node may thus time difference Δ _UD MT uplink resource and the downlink resource based on DU, send to the switching time T5 MT DU transmitted, to determine protection switching MT uplink resource parameter DU downlink resources. Alternatively, the node may be based on IAB time difference Δ _UD MT uplink resource and the downlink resource based on DU, DU MT sends the transmission to the switching time t6, where DU uplink resource is determined to switch to the protection parameters MT downlink resources. Among them, the switching time sent from the MT to the DU can be the same as the switching time from the DU to the MT, that is, t5 can be equal to t6. Or, t5 may not be equal to t6.

1) Determine the guard interval for switching between MT uplink resources and DU downlink resources.

The guard interval for switching between the MT uplink resource and the DU downlink resource may specifically be: the guard interval for switching the MT uplink resource to the DU downlink resource, or the guard interval for switching the DU downlink resource to the MT uplink resource.

For the switch from MT uplink resource to DU downlink resource, the overlap time of DU downlink resource plus switching time t5 and MT uplink resource is t5+ _ΔUD . In order to avoid resource conflicts, the MT cannot perform signal transmission during this period of time. This overlap time t5+ _{ΔUD is} referred to as the guard interval for switching the MT uplink resource to the DU downlink resource in this application.

For the switch from DU downlink resource to MT uplink resource, the overlap time of DU downlink resource plus switching time t6 and MT uplink resource is t6- _ΔUD . In order to avoid resource conflicts, the MT cannot perform signal transmission during this period of time, and this overlapping time t6- _{ΔUD is} referred to as the guard interval for switching the DU downlink resource to the MT uplink resource in this application.

2) Determine the number of protection symbols for switching between MT uplink resources and DU downlink resources.

The number of protection symbols for switching between the MT uplink resource and the DU downlink resource may specifically be: the number of protection symbols for switching the MT uplink resource to the DU downlink resource, that is, the number a of the protection symbols before the DU downlink resource. Or, the number of protection symbols for switching the DU downlink resource to the MT uplink resource, that is, the number of protection symbols b after the DU uplink resource.

E.g,

In an exemplary description, if Δ _{UD is} not greater than the length of one symbol, that is

It can be defined that the number of protection symbols before the DU symbol is 0, and the number of protection symbols after the DU symbol is 1. When DU uses symbol 4, at MT, except for symbol 4 whose index overlaps, symbol 5 is also unavailable, as shown in Figure 13.

3) Determine the available symbol index deviation for switching between DU downlink resources and MT uplink resources.

The available symbol index deviation for switching between the DU downlink resource and the MT uplink resource may specifically be: the available symbol index deviation for switching the MT uplink resource to the DU downlink resource, that is, the index of the start symbol of the DU downlink resource and the end of the MT uplink resource The deviation e between the indices of the symbols. Or the available symbol index deviation for switching between the DU downlink resource and the MT uplink resource may specifically be: the available symbol index deviation for switching the DU downlink resource to the MT uplink resource, that is, the index of the end symbol of the DU downlink resource and the start of the MT uplink resource The deviation f between the indexes of the starting symbol. Deviation e=a+1, deviation f=b+1.

For example, as shown in FIG. 13, the index of the start symbol of the DU downlink resource is 4, and the index of the end symbol of the MT uplink resource is 3. The deviation e between the index of the start symbol of the DU downlink resource and the index of the end symbol of the MT uplink resource is 1. The index of the end symbol of the DU downlink resource is 4, the index of the start symbol of the MT uplink resource is 6, and the deviation f between the index of the end symbol of the DU downlink resource and the index of the start symbol of the MT uplink resource is 2.

It should be noted that the DU resource is switched to the protection symbol of the MT resource: if the number of protection symbols is N1, the DU uses the symbol M, and affected by the transmission of this symbol, the first available symbol of the subsequent MT is the symbol M+N1+ 1. If the calculated symbol index exceeds the maximum symbol index in the slot (that is, 13), it is extended to the next slot. For example, Figure 14A shows an example of three time slots (denoted as time slot 0, time slot 1 and time slot 2 in turn). Assuming that the number of protection symbols from DU to MT is 1, in Figure 14A, DU is in the time slot. The last available symbol of 1 is symbol 10, and the subsequent first MT symbol is symbol 12 of the simultaneous slot; and in Figure 14B, the last available symbol of DU in slot 0 is symbol 13, and the subsequent first symbol Each MT symbol is symbol 1 of the next slot.

MT resource is switched to the protection symbol of DU resource: If the number of protection symbols is N2 and DU uses symbol M, affected by this symbol transmission, the last available symbol of MT before is symbol M-N2-1, if the symbol index is If the value is less than 0, it will be extended to the previous time slot. For example, Figure 14A shows an example of three time slots (denoted as time slot 0, time slot 1 and time slot 2 in turn). Assuming that the number of protection symbols from MT to DU is 1, in Figure 14A, the DU is in the time slot. The first available symbol of 1 is symbol 3, then the last MT symbol before is the symbol 1 of the simultaneous slot; and in Figure 14B, the first available symbol of DU in slot 2 is symbol 0, then the last symbol before One MT symbol is the symbol 12 of the previous time slot.

The above calculation formula of protection symbols may obtain the number of protection symbols with a negative number, and the number of protection symbols with a negative number indicates that MT and DU may use symbols with the same resource index. For example, assuming that the number of protection symbols from DU resource to MT resource is -1, and the index of the last available symbol of the DU is symbol 2, then the first available symbol of the subsequent MT is symbol 2 of the simultaneous slot.

In a possible implementation, the protocol does not define the number of protection symbols for negative numbers, that is, when the calculated number of protection symbols is negative, it is regarded as 0.

It should be understood that the MT available symbols determined by the above method are all possible available symbols, because the available symbols determined by the above method only consider the last DU symbol and the influence of the first DU symbol on the MT symbol, but not the remaining symbols. the elements of. The available symbols of the actual MT should be the intersection of the available symbols derived from all relevant DU resources and protection symbol information.

In summary, considering the uplink and downlink resources of the MT and the uplink and downlink resources of the DU, four resource combinations can be obtained, and there are two handover scenarios for each resource combination (ie, DU resource to MT resource switching, and MT Resource to DU resource switch). Therefore, the IAB node can determine the protection parameters in 8 handover situations, as shown in Table 2 below.

Table 2

To	DU上行DU uplink	DU下行DU downstream
MT下行MT down	(A1，B1)(A1, B1)	(C1，D1)(C1, D1)
MT上行MT up	(E1，F1)(E1, F1)	(G1，H1)(G1, H1)

Among them, A1 represents the protection parameter for switching from MT downlink resource to DU uplink resource. B1 represents the protection parameter for switching from the DU uplink resource to the MT downlink resource. C1 represents the protection parameter for switching from the MT downlink resource to the DU downlink resource. D1 represents the protection parameter for switching from the DU downlink resource to the MT downlink resource. E1 represents the protection parameter for switching from the MT uplink resource to the DU uplink resource. F1 represents the protection parameter for switching from the DU uplink resource to the MT uplink resource. G1 represents the protection parameter for switching from the MT uplink resource to the DU downlink resource. H2 represents the protection parameter for switching from DU downlink resources to MT uplink resources.

It can be seen that after the IAB node obtains the guard interval for switching between DU resources and MT resources, it can determine the number of guard symbols for switching between DU resources and MT resources according to the guard interval for switching between DU resources and MT resources. Or the available symbol index deviation for switching between the DU resource and the MT resource. The IAB node can determine the available resources of the MT according to the resource configuration information of the DU, and the number of protection symbols for switching between the DU resource and the MT resource, or the available symbol index deviation for switching between the DU resource and the MT resource. In order to avoid resource conflicts, the superior node or host node of the IAB node also needs to determine the available resources of the MT. However, the superior node or host node of the IAB node may not obtain the number of protection symbols for switching between DU resources and MT resources or the deviation of the available symbol index for switching between DU resources and MT resources. Therefore, the IAB node may also The upper-level node reports its protection parameters.

For example, the IAB node can report one of the following protection parameters to its superior node or host node: the guard interval for switching between DU resources and MT resources, the number of protection symbols that report the switching between DU resources and MT resources, and The available symbol index deviation for switching between the DU resource and the MT resource. If the IAB node reports the guard interval for switching between DU resources and MT resources, the superior node or host node of the IAB node can determine the number of protection symbols or DU resources for switching between DU resources and MT resources according to the guard interval. The available symbol index deviation for switching with the MT resource, and then the available resource of the MT is determined according to the resource configuration information of the DU and the number of the protection symbols or the available symbol index deviation.

Alternatively, the IAB node may not report its protection parameters to its upper-level node or host node, and the IAB node may report the time difference between the DU resource and the MT resource to its upper-level node or host node. The protocol may define the maximum switching time for switching between DU resources and MT resources. The superior node or host node of the IAB node determines the guard interval between the DU resource and the MT resource according to the time difference and the maximum switching time, and then can determine the guard interval between the DU resource and the MT resource according to the guard interval between the DU resource and the MT resource. The number of protection symbols or the available symbol index deviation, and then the resource available for the MT is determined according to the resource configuration information of the DU and the number of the protection symbols or the available symbol index deviation.

Alternatively, after the IAB node determines the start symbol of the MT available resource or the end symbol of the MT available resource, it can directly report the index of the start symbol of the MT available resource or the index of the end symbol of the MT available resource to its superior node or host node . The start symbol of the available resources of the MT refers to the first available symbol of the MT after the available symbols of a continuous DU. The end symbol of the available resources of the MT refers to the last available symbol of the MT before the available symbols of a continuous DU. For example, as shown in FIG. 13, the index of the start symbol of the MT available resource is 6, and the index of the end symbol of the MT available resource is 3. Here, the available symbols of the DU include symbols that are always available to the DU, that is, the hard symbols of the DU, and also include the available symbols of the DU determined through dynamic signaling, for example, the soft symbols of the DU indicated as available through dynamic signaling.

In summary, the IAB node can report first information to its superior node or host node. The first information includes protection parameters for switching between DU resources and MT resources, the time difference between DU resources and MT resources, and MT available resources. The start symbol of the MT or the end symbol of the available resources of the MT. The upper-level node or the host node can determine the available resources of the MT according to the first information.

According to the above example, it can be seen that some protection parameters (such as the number of protection symbols) are related to the symbol length Δt. At this time, the reporting should be based on the assumption of a certain symbol length. The symbol length assumptions include assumptions about subcarrier spacing and/or assumptions about cyclic prefix types.

In NR, the upper-level node of the IAB communicates with the MT using multiple beams. Therefore, there may be multiple time differences between MT downlink resources and DU resources. Or, there may be multiple time differences between MT uplink resources and DU resources. Therefore, only determining a set of time domain locations of the MT can no longer meet the needs of the IAB and superior nodes. Using a set of time domain locations of the MT for scheduling may cause resource conflicts. For this reason, the embodiment of the present application provides a resource determination method, which can accurately determine multiple sets of time domain positions of the MT.

The resource determination method provided by the embodiments of the present application will be described in detail below in conjunction with the drawings.

Please refer to FIG. 15. FIG. 15 is a flowchart of a method for determining a resource provided by this application. The method includes:

1501. The first node determines the time domain location of the DU resource of the IAB node.

The first node may be the IAB node itself. In this case, the first node determines the time domain location of its own DU resource. Alternatively, the first node may also be an upper node or host node of the IAB node. In this case, the first node determines the time domain location of the DU resource of the IAB node.

Here, the time domain position of the DU resource includes the time domain position of various types or properties of the DU resource. For example, the time domain position of the DU resource specifically includes the time domain position of the DU available resource. Here, the available resources of the DU include the resources that are always available to the DU, that is, the hard resources of the DU, and the available resources of the DU determined through dynamic signaling, for example, the soft resources of the DU indicated as available through dynamic signaling.

In specific implementation, the IAB node may be a network device, such as a relay device, or it may be an IAB node. Or the IAB node may be a terminal device, such as a UE relay. Or the IAB node may also be other IAB nodes that need to return data with other IAB nodes, etc., which is not specifically limited here.

In an exemplary description, the time domain position may refer to a time domain index, such as a frame number, a time slot number, a symbol number, or a combination of the foregoing numbers, such as a time slot number plus a symbol number, and so on.

1502. The first node determines multiple sets of time domain positions of the MT of the IAB node.

Among them, the multiple sets of time domain locations of the MT may specifically be multiple sets of available time domain locations of the MT. The multiple sets of time domain locations of the MT are related to one or more of the following information: the time domain location of the DU resource, the resource type of the DU resource, the resource nature of the DU resource, the dynamic resource indication information of the DU, and the multiple information of the MT. The first information corresponding to each second information in the second information. The second information includes receiving configuration information, sending configuration information, or cell group information. The first information includes time difference, protection parameter or symbol index information. The time difference is the time difference between the DU resource and the MT resource. The protection parameter is a protection parameter for switching between the DU resource and the MT resource. The symbol index information is the index of the start symbol of the available resource of the MT, or the symbol index information is the index of the end symbol of the available resource of the MT.

In the embodiment of this application, the type of the DU resource can be uplink or downlink or flexible. Among them, the uplink resource of the DU is always used for uplink transmission, the downlink resource of the DU is always used for downlink transmission, and the flexible resource of the DU means that the resource can be used for uplink transmission or downlink transmission. Similarly, the type of MT resource can also be uplink or downlink or flexible. The uplink resource of the MT is always used for uplink transmission, the downlink resource of the MT is always used for downlink transmission, and the flexible resource of the MT means that the resource can be indicated as being used for uplink transmission or downlink transmission under the configuration of signaling.

In the embodiment of this application, the resource nature of the DU resource can be hard and soft. The DU hard resource is a resource that is always available to the DU. The availability of DU soft resources can be determined through dynamic indication signaling. For example, the upper-level node can directly indicate the availability of DU soft resources of the IAB node through signaling such as DCI. Alternatively, the upper-level node may indicate the availability of the MT resource of the IAB node through signaling such as DCI, and the IAB node determines the availability of its DU soft resource according to the upper-level node's indication of the MT resource availability.

In this embodiment of the application, the dynamic resource indication information of the DU is used to indicate the soft resources available to the DU.

In the embodiment of the present application, the receiving configuration information may be transmission configuration indicator (Transmission Configuration Indicator, TCI-state) information, quasi co-location (Quasico-location, QCL) information, or other receiving configuration information. The sending configuration information may be SpatialRelationInfo or other sending configuration information. The cell group information may be timing advance group (Timing advance group, TAG) information or cell group identification, etc.

It should be understood that the MT of the IAB node can determine the parameters used for downlink reception according to the receiving configuration information, including receiving timing, receiving beam, receiving spatial filter, or channel estimation parameters. Similarly, the MT of the IAB node can determine the parameters used for uplink transmission, including transmission timing, transmission beam, transmission power, or transmission spatial filter according to the transmission configuration information.

In the embodiment of the present application, the protection parameter may be the protection parameter introduced in the foregoing protection parameter determination method. For example, the protection parameter may be a guard interval for switching between DU resources and MT resources, the number of protection symbols for switching between DU resources and MT resources, or an available symbol index deviation for switching between DU resources and MT resources. For the specific introduction of the protection parameters, please refer to the corresponding description in the above-mentioned protection parameter determination method, which will not be repeated here.

In the embodiment of the present application, the start symbol of the available resources of the MT refers to the first available symbol of the MT after the available symbols of a continuous DU. Here, the available symbols of the DU include symbols that are always available to the DU, that is, the hard symbols of the DU, and also include the available symbols of the DU determined through dynamic signaling, for example, the soft symbols of the DU indicated as available through dynamic signaling. For example, as shown in FIG. 13, the index of the start symbol of the MT available resource may be 6. The end symbol of the available resources of the MT refers to the last available symbol of the MT before the available symbols of a continuous DU. For example, as shown in FIG. 13, the index of the end symbol of the available resources of the MT may be 3.

In a possible implementation, the first node is based on the time domain location of the DU resource, the resource type of the DU resource, the resource nature of the DU resource, the dynamic resource indication information, the resource configuration information of the MT, and the multiple second information of the MT. One or more items in the first information corresponding to each second information are used to determine multiple sets of time domain positions of the MT. Among them, the resource configuration information of the MT includes the resource type (D/U/F) information of the MT.

For example, as shown in FIG. 16, the second information is TCI-state information, and the first information is the number of protection symbols. The MT is configured with two receiving configuration messages. The number of protection symbols for switching from DU resources to MT resources corresponding to TCI-state#0 is 1, and the number of protection symbols for switching from DU resources to MT resources corresponding to TCI-state#1 is 1. The number is 2. The first node determines the first set of time domain locations based on one or more of the time domain location of the DU resource, the resource type of the DU resource, the availability of the DU resource, and the number of protection symbols (1). The first node determines the second set of time domain positions based on one or more of the time domain position of the DU resource, the resource type of the DU resource, the availability of the DU resource, and the number of protection symbols (2). Among them, the index of the first available symbol of the MT in the first set of time domain positions is 4, and the index of the first available symbol of the MT in the second set of time domain positions is 5.

In other words, the first node can determine different time domain positions of the MT based on the different reception configuration information of the MT. Among them, the first set of time domain positions is used to receive the transmission corresponding to the configuration information 1. The second set of time domain locations is used to receive the transmission corresponding to configuration information 2. The same is true when the second information is cell group information or sending configuration information, and the same is true when the first information is time difference or symbol index information, which will not be repeated here. Wherein, each second information in the plurality of second information may correspond to different first information, or part of the second information in the plurality of second information may also correspond to the same first information, which is not limited in the embodiment of the present application.

The second parameter may be receiving configuration information, sending configuration information, or cell group information. The following first introduces the case where the second information is cell group information:

In a possible implementation, when the second information is cell group information, the time difference between DU resources and MT resources is specifically the time difference between DU resources and MT downlink resources, and protection parameters for switching between DU resources and MT resources It is a protection parameter for switching between the DU resource and the downlink resource of the MT. The symbol index information is the index of the start symbol of the downlink available resource of the MT, or the symbol index information is the index of the end symbol of the downlink available resource of the MT. In this possible implementation, the first node may determine multiple sets of downlink time domain positions of the MT based on the first information corresponding to each cell group information in the multiple cell group information. That is, the first node can determine different downlink time domain positions of the MT for different cell group information.

In some cases, the MT of the IAB node may be configured with multiple cell group information. For example, the cell group information is timing advance group (TAG) information. This means that the uplink signal of the MT of the IAB node can adopt different uplink timings in different serving cells (or component carriers), or that the uplink signal of the MT can be configured (indicating) different uplink timing advances (TAs) in different serving cells. )the amount. Correspondingly, the MT may have different reception times when receiving downlink signals of serving cells (component carriers) corresponding to different TAGs. Therefore, when the MT is configured with multiple cell group information, the multiple cell group information may correspond to multiple time differences between MT downlink resources and DU resources (U/D). For example, as shown in Fig. 17, there are multiple time differences between the MT downlink resource of the IAB node and the downlink/uplink resource of the DU. Fig. 17 uses the DU resource as the downlink resource. Furthermore, the multiple cell group information may correspond to multiple protection parameters for switching between MT downlink resources and DU resources (U/D). And the multiple cell group information may correspond to multiple start symbols of the available downlink resources of the MT or multiple end symbols of the available downlink resources of the MT.

For example, the correspondence between the cell group information and the time difference between the MT downlink resource and the DU resource may be shown in Table 3 below. Table 3 below takes the cell group information as TAG information as an example. As shown in Table 3 below, the MT is configured with 2 TAG information, namely TAG#0 and TAG#1. The time between the MT downlink resources and uplink resource DU difference having two, respectively, and Δ _DU1 TAG # 1 corresponding to the time difference time difference corresponding to the TAG # 0 Δ _DU2. There are two time differences between MT downlink resources and DU downlink resources, which are the time difference Δ _DD1 corresponding to TAG#0 and the time difference Δ _DD2 corresponding to TAG#1.

table 3

For example, the correspondence between the cell group information and the protection parameters for switching between MT downlink resources and DU resources may be shown in Table 4 below. Table 4 below takes the cell group information as TAG information as an example. As shown in Table 4 below, the MT is configured with 2 TAG information, namely TAG#0 and TAG#1. There are two protection parameters for switching from MT downlink resources to DU uplink resources, which are protection parameter A1 corresponding to TAG#0 and protection parameter A2 corresponding to TAG#1. There are two protection parameters for switching from DU uplink resources to MT downlink resources, which are protection parameter B1 corresponding to TAG#0 and protection parameter B2 corresponding to TAG#1. There are two protection parameters for switching the MT downlink resource to the DU downlink resource, which are the protection parameter C1 corresponding to TAG#0 and the protection parameter C2 corresponding to TAG#1. There are two protection parameters for switching the DU downlink resource to the MT downlink resource, which are the protection parameter D1 corresponding to TAG#0 and the protection parameter D2 corresponding to TAG#1.

Table 4

For another example, the correspondence between the cell group information and the index of the start symbol of the available downlink resource of the MT or the index of the end symbol of the available downlink resource of the MT may be shown in Table 5 below. Table 5 below takes the cell group information as TAG information as an example. As shown in Table 5 below, the MT is configured with 2 TAG information, namely TAG#0 and TAG#1. When the MT downlink resource is switched to the DU uplink resource, the index of the end symbol of the MT available downlink resource has two, respectively, the index of the end symbol of the MT available downlink resource corresponding to TAG#0, M1 and the MT available downlink resource corresponding to TAG#1 The index of the end symbol M2. When the DU uplink resource is switched to the MT downlink resource, there are two start symbols of the MT available downlink resource, which are the index N1 of the start symbol of the MT available downlink resource corresponding to TAG#0 and the MT available downlink resource corresponding to TAG#1 The index of the starting symbol N2. When the MT downlink resource is switched to the DU downlink resource, there are two end symbols of the MT available downlink resource, which are the index of the end symbol O1 of the MT available downlink resource corresponding to TAG#0 and the end of the MT available downlink resource corresponding to TAG#1 The index of the symbol O2. When the DU downlink resource is switched to the MT downlink resource, there are two start symbols of the MT available downlink resource, which are the index P1 of the start symbol of the MT available downlink resource corresponding to TAG#0 and the MT available downlink resource corresponding to TAG#1 The index of the starting symbol P2.

table 5

Therefore, since multiple cell group information can correspond to multiple first information (the time difference between the DU resource and the downlink resource of the MT, the protection parameter for switching between the DU resource and the downlink resource of the MT, the start of the downlink resource available to the MT The index of the symbol or the index of the end symbol of the available downlink resource of the MT), therefore, multiple sets of downlink time domain positions of the MT can be determined according to the first information corresponding to each cell group information in the multiple cell group information.

In a possible implementation, when the second information is cell group information, the time difference between the DU resource and the MT resource is specifically the time difference between the DU resource and the uplink resource of the MT, and the time difference between the DU resource and the MT resource is performed The protection parameter of the handover is the protection parameter for switching between the DU resource and the uplink resource of the MT. The symbol index information is the index of the start symbol of the MT's uplink available resources, or the symbol index information is the end symbol of the MT's uplink available resources. index of. In this possible implementation, the first node may determine multiple sets of uplink time domain positions of the MT based on the first information corresponding to each cell group information in the multiple cell group information. That is, the first node can determine different uplink time domain positions of the MT for different cell group information.

In some cases, the MT of the IAB node may be configured with multiple cell group information. For example, the cell group information is timing advance group (TAG) information. This means that the uplink signal of the MT of the IAB node can adopt different uplink timings in different serving cells (or component carriers), or that the uplink signal of the MT can be configured (indicating) different uplink timing advances (TAs) in different serving cells. )the amount. Therefore, when the MT is configured with multiple cell group information, there may be multiple time differences between MT uplink resources and DU resources (U/D). Furthermore, the multiple cell group information may correspond to multiple protection parameters for switching between MT uplink resources and DU resources (U/D). And the multiple cell group information may correspond to multiple start symbols of the available uplink resources of the MT or multiple end symbols of the available uplink resources of the MT.

For example, the correspondence between the cell group information and the time difference between the MT uplink resource and the DU resource may be as shown in Table 6 below. Table 6 below takes the cell group information as TAG information as an example. As shown in Table 6 below, the MT is configured with 2 TAG information, namely TAG#0 and TAG#1. The time between the DU MT uplink resource and the uplink resource difference having two, respectively, a time difference [Delta] corresponding to the TAG # 0 _UU1 time difference corresponding to TAG # 1 and Δ _UU2. There are two time differences between the MT uplink resource and the DU downlink resource, which are the time difference Δ _UD1 corresponding to TAG#0 and the time difference Δ _UD2 corresponding to TAG#1.

Table 6

For example, the correspondence between the cell group information and the protection parameters for switching between MT downlink resources and DU resources may be shown in Table 7 below. The corresponding principle of the corresponding relationship in Table 7 is the same as that in Table 4, and will not be repeated here.

Table 7

For another example, the correspondence relationship between the cell group information and the index of the start symbol of the downlink resource available for the MT or the index of the end symbol of the downlink resource available for the MT may be shown in Table 8 below. The corresponding principle of the corresponding relationship in Table 8 is the same as that in Table 5, and will not be repeated here.

Table 8

Therefore, since multiple cell group information can correspond to multiple first information (the time difference between the DU resource and the uplink resource of the MT, the protection parameter for switching between the DU resource and the uplink resource of the MT, the start of the MT available uplink resource The index of the symbol or the index of the end symbol of the available uplink resource of the MT), therefore, the multiple sets of uplink time domain positions of the MT can be determined according to the first information corresponding to each cell group information in the multiple cell group information.

The following describes the case where the second information is receiving configuration information:

In a possible implementation, when the second information is receiving configuration information, the time difference between the DU resource and the MT resource is specifically the time difference between the DU resource and the MT downlink resource, and the protection parameter for switching between the DU resource and the MT resource It is a protection parameter for switching between the DU resource and the downlink resource of the MT. The symbol index information is the index of the start symbol of the downlink available resource of the MT, or the symbol index information is the index of the end symbol of the downlink available resource of the MT. In this possible implementation, the first node may determine the multiple sets of downlink time domain positions of the MT based on the first information corresponding to each of the multiple received configuration information.

In NR, MT downlink signals with different reception configuration information may have different arrival times, that is, MTs have different downlink frame reception timings. In other words, the MT of the IAB node may use different timing reception windows when receiving downlink signals with different reception configuration information. At this time, as shown in Figure 17, there may be multiple time differences between the MT downlink resource of the IAB node and the downlink/uplink resource of the DU. Figure 17 uses the DU resource as the downlink resource. Therefore, multiple received configuration information of the MT may correspond to multiple time differences between the MT downlink resource and the DU resource. Furthermore, the multiple received configuration information may correspond to multiple protection parameters for switching between MT downlink resources and DU resources (U/D). And the multiple received configuration information may correspond to multiple start symbols of the available downlink resources of the MT or multiple end symbols of the available downlink resources of the MT.

For example, the correspondence between the received configuration information and the time difference between the MT downlink resource and the DU resource may be as shown in Table 9 below. The corresponding principle of the corresponding relationship in Table 9 is the same as that in Table 3, and will not be repeated here.

Table 9

For another example, the corresponding relationship between the received configuration information and the protection parameters for switching between MT downlink resources and DU resources may be shown in Table 10 below. The corresponding principle of the corresponding relationship in Table 10 is the same as that in Table 3, and will not be repeated here.

Table 10

For another example, the correspondence between the received configuration information and the index of the start symbol of the available downlink resource of the MT or the index of the end symbol of the available downlink resource of the MT may be shown in Table 11 below. The corresponding principle of the corresponding relationship in Table 11 is the same as that in Table 4, and will not be repeated here.

Table 11

Therefore, because multiple received configuration information can correspond to multiple first information (the time difference between the DU resource and the downlink resource of the MT, the protection parameter for switching between the DU resource and the downlink resource of the MT, the start of the downlink resource available to the MT The index of the symbol or the index of the end symbol of the available downlink resource for the MT), therefore, the multiple sets of downlink time domain positions of the MT can be determined according to the first information corresponding to each of the multiple received configuration information.

In a possible implementation, the multiple receiving configuration information of the MT of the present application is the receiving configuration information configured for the MT by the superior node of the IAB node. For example, the MT is configured with 5 receiving configuration information. Among them, TCI-state#0 to TCI-state#2 are receiving configuration information for controlling resource settings. TCI-state#3 and TCI-state#4 are physical downlink shared channel (Physical Downlink Share Channel, PDSCH) reception configuration information. The upper-level node of the IAB node can configure TCI-state#2 and TCI-state#3 for the IAB to correspond to the first information. The multiple receiving configuration information of the MT in this application may refer to TCI-state#2 and TCI-state#3.

In a possible implementation, the received configuration information is the received configuration information set by the control resource configured by the MT. For example, the MT is configured with 3 control resource settings to receive configuration information. They are TCI-state#0～TCI-state#2. The multiple receiving configuration information of the MT in this application may refer to TCI-state#0 to TCI-state#2.

In a possible implementation, the received configuration information is the received configuration information of the PDSCH configured by the MT. For example, the MT is configured with 4 control resource settings to receive configuration information. They are TCI-state#0～TCI-state#3. The multiple receiving configuration information of the MT in this application may refer to TCI-state#0 to TCI-state#3.

In a possible implementation, the multiple reception configuration information of the MT corresponds to one cell group information of the MT. That is, different cell group information may correspond to different time differences between MT downlink resources and DU resources, and different reception configuration information under the same cell group information may correspond to different time differences between MT downlink resources and DU resources. Furthermore, different protection parameters for switching between DU resources and MT downlink resources that may correspond to different cell group information, and switching between DU resources and MT downlink resources that may correspond to different reception configuration information under the same cell group information Different protection parameters. Different cell group information may correspond to the indexes of different start symbols of the available downlink resources of the MT, and different reception configuration information under the same cell group information may correspond to the indexes of different start symbols of the available downlink resources of the MT. Different cell group information may correspond to different end symbol indexes of MT available downlink resources, and different reception configuration information under the same cell group information may correspond to different end symbol indexes of MT available downlink resources.

For example, the correspondence between the cell group information, the received configuration information, and the time difference between the MT downlink resource and the DU resource may be as shown in Table 12 below. Table 12 below takes the cell group information as TAG information and the receiving configuration information as TCI-state information as an example. As shown in Table 12 below, the MT is configured with 2 TAG information, namely TAG#0 and TAG#1. The MT is configured with 4 TCI-state information, namely TCI-state#0～TCI-state#3. The time between the MT downlink resources DU uplink resource difference having 4, respectively TAG # time difference between 0 and TCI-state # 0 corresponding Δ _DU1, TAG # time difference between 0 and TCI-state # 1 corresponding to Δ _DU2, TAG # 1 and the time difference TCI-state # 2 corresponding Δ _DU3, TAG # 1 and the time difference TCI-state # 3 corresponding Δ _DU4. The corresponding principle of the time difference between the MT downlink resource and the DU downlink resource is the same, and will not be repeated here.

Table 12

For another example, the correspondence between cell group information, received configuration information, and protection parameters for switching between MT downlink resources and DU resources may be shown in Table 13 below.

Table 13

For another example, the correspondence between the cell group information, the reception configuration information and the index of the start symbol of the available downlink resource of the MT or the index of the end symbol of the available downlink resource of the MT may be shown in Table 14 below.

Table 14

Therefore, because the multiple reception configuration information corresponding to the cell group information can correspond to multiple first information (the time difference between the DU resource and the downlink resource of the MT, the protection parameter for switching between the DU resource and the downlink resource of the MT, and the MT available The index of the start symbol of the downlink resource or the index of the end symbol of the available downlink resource of the MT), therefore, multiple sets of downlink time domain positions of the MT can be determined according to the first information corresponding to each of the multiple received configuration information.

The following describes the case where the second information is sending configuration information:

In a possible implementation, when the second information is sending configuration information, the time difference between the DU resource and the MT resource is specifically the time difference between the DU resource and the MT uplink resource, and the time difference between the DU resource and the MT resource is The protection parameter of the handover is the protection parameter for switching between the DU resource and the uplink resource of the MT. The symbol index information is the index of the start symbol of the MT's uplink available resources, or the symbol index information is the end symbol of the MT's uplink available resources. index of.

During uplink transmission, the IAB node MT can be configured with multiple spatial relationship information (SpatialRelationInfo), such as the spatial relationship information of the physical uplink control channel (PUCCH-SpatialRelationInfo) and the spatial relationship information of the sounding reference signal (SRS-SpatialRelationInfo). When the MT is configured with different SpatialRelationInfo, there may be deviations in the uplink transmission timing. Therefore, multiple sending configuration information may correspond to multiple time differences between DU resources and MT uplink resources. Furthermore, multiple transmission configuration information may correspond to multiple protection parameters for switching between MT uplink resources and DU resources (U/D), and multiple transmission configuration information may correspond to multiple index or multiple starting symbols of MT available uplink resources. The index of the ending symbol.

For example, the correspondence between the sending configuration information and the time difference between the MT uplink resource and the DU resource may be as shown in Table 15 below. The following table 15 takes the sending configuration information as spatial relationship information as an example. The corresponding principle of the corresponding relationship in Table 15 is the same as that in Table 5, and will not be repeated here.

Table 15

For another example, the correspondence between the transmission configuration information and the protection parameters for switching between the MT downlink resource and the DU resource may be shown in Table 15 below. Table 16 below takes the sending configuration information as spatial relationship information as an example. The corresponding principle of the correspondence in Table 16 is the same as that in Table 3, and will not be repeated here.

Table 16

For another example, the correspondence between the transmission configuration information and the index of the start symbol of the available downlink resource of the MT or the index of the end symbol of the available downlink resource of the MT may be shown in Table 17 below. Table 17 below takes the sending configuration information as spatial relationship information as an example. The corresponding principle of the correspondence in Table 17 is the same as that in Table 4, and will not be repeated here.

Table 17

Therefore, since multiple transmission configuration information can correspond to multiple first information (the time difference between the DU resource and the uplink resource of the MT, the protection parameter for switching between the DU resource and the uplink resource of the MT, the start of the MT available uplink resource The index of the symbol or the index of the end symbol of the available uplink resource of the MT), therefore, the multiple sets of uplink time domain positions of the MT can be determined according to the first information corresponding to each transmission configuration information in the multiple transmission configuration information.

In a possible implementation, the sending configuration information is the sending configuration information configured for the MT by the upper node of the communication device. For example, the MT is configured with 5 sending configuration information. Among them, SpatialRelationInfo#0 to SpatialRelationInfo#2 are physical uplink control channel (physical uplink control channel, PUCCH) sending configuration information. SpatialRelationInfo#3 and SpatialRelationInfo#4 are transmission configuration information for sounding reference signal (sounding reference signal, SRS) transmission. The superior node of the IAB node can configure SpatialRelationInfo#2 and SpatialRelationInfo#3 for the IAB to correspond to the first information. The multiple sending configuration information of the MT in this application may refer to SpatialRelationInfo#2 and SpatialRelationInfo#3.

Or, the transmission configuration information is the transmission configuration information of the PUCCH configured by the MT. For example, the MT is configured with the transmission configuration information of 3 PUCCHs. They are SpatialRelationInfo#0～SpatialRelationInfo#2. The multiple sending configuration information of the MT in this application may refer to SpatialRelationInfo#0 to SpatialRelationInfo#2.

Or, the transmission configuration information is the transmission configuration information of the SRS configured by the MT. For example, the MT is configured with 4 SRS transmission configuration information. They are SpatialRelationInfo#0～SpatialRelationInfo#3. The multiple sending configuration information of the MT in this application may refer to SpatialRelationInfo#0 to SpatialRelationInfo#3.

In a possible implementation, multiple transmission configuration information of the MT corresponds to one cell group information of the MT. That is, different cell group information may correspond to different time differences between MT uplink resources and DU resources, and different transmission configuration information under the same cell group information may correspond to different time differences between MT uplink resources and DU resources. Furthermore, different protection parameters for switching between DU resources and MT uplink resources that may correspond to different cell group information, and switching between DU resources and MT uplink resources that may correspond to different transmission configuration information under the same cell group information Different protection parameters. Different cell group information may correspond to different start symbol indexes of MT available uplink resources, and different transmission configuration information under the same cell group information may correspond to different start symbol indexes of MT available uplink resources. Different cell group information may correspond to different end symbol indexes of MT available uplink resources, and different transmission configuration information under the same cell group information may correspond to different end symbol indexes of MT available uplink resources.

For example, the correspondence relationship between the cell group information, the transmission configuration information, and the time difference between the MT uplink resource and the DU resource may be shown in Table 18 below.

Table 18

For another example, the correspondence between cell group information, transmission configuration information, and protection parameters for switching between MT uplink resources and DU resources may be shown in Table 19 below.

Table 19

For another example, the correspondence relationship between the cell group information, the transmission configuration information, and the index of the start symbol of the available uplink resource of the MT or the index of the end symbol of the available uplink resource of the MT may be shown in Table 20 below.

Table 20

In a possible implementation, when the first node is an IAB node, the first node also needs to determine the first information corresponding to each of the multiple second information of the MT. For example, as shown in Table 3, the first node may determine the TAG # 0 corresponding to TAG # 1 and Δ _DU1 corresponding Δ _DU2. Regarding the determination method of the time difference, please refer to the corresponding description in the above method for determining the protection parameter, which will not be repeated here. After the first node determines Δ _DU1 and Δ _DU2 , it can obtain the protection parameters for switching between the MT downlink resource corresponding to TAG#0 and the DU uplink resource _{according to Δ DU1} , and obtain the MT downlink resource corresponding to TAG#1 _{according to Δ DU2 and} Protection parameters for switching between DU uplink resources. The first node can determine the downlink time domain location of the first set of MTs according to the protection parameters corresponding to TAG#0. The first node can determine the downlink time domain location of the second set of MTs according to the protection parameters corresponding to TAG#1.

For another example, as shown in Table 4, the first node may determine that the MT downlink resource corresponding to TAG#0 is switched to the protection parameter A1 of the DU uplink resource and the MT downlink resource corresponding to TAG#1 is switched to the protection parameter A2 of the DU uplink resource. The first node can determine the downlink time domain location of the first set of MTs according to the protection parameter A1 corresponding to TAG#0. The first node can determine the downlink time domain location of the second set of MTs according to the protection parameter A2 corresponding to TAG#1.

For another example, the first node may determine the index M1 of the end symbol of the MT available downlink resource corresponding to TCI-state#0 and the index M2 of the end symbol of the MT available downlink resource corresponding to TCI-state#1. The first node can determine the time domain position of the first set of MTs according to the index M1 corresponding to TCI-state#0. The first node can determine the time domain position of the second set of MTs according to the index M2 corresponding to TCI-state#1.

In a possible implementation, when the first node is an IAB node, after the first node determines the first information corresponding to each of the multiple second information of the MT, it also needs to report to the superior node or host of the first node. The node reports indication information, which is used to indicate the first information corresponding to each second information in the plurality of second information of the MT. Therefore, after the upper node or host node of the first node receives the indication information, it can determine the multiple sets of time domain positions of the MT according to the first information corresponding to each second information in the plurality of second information.

In a possible implementation, when the first node is the superior node or the host node of the IAB node, the first node may also receive the indication information reported by the IAB node. The indication information is used to indicate each of the multiple second information of the MT The first information corresponding to the second information. After the first node receives the indication information, it can determine the multiple sets of time domain positions of the MT according to the first information corresponding to each second information in the plurality of second information.

In a possible implementation, when the second information is receiving configuration information, the indication information may specifically include the identifier of the receiving configuration information and the corresponding first information.

For example, when the first information is a time difference, the information element of the indication information may be as follows:

MT-DU-timing-misalignment:

{

Value; // The timing difference between DU and MT, the unit can be Tc

Pattern; // The specific conversion pattern, such as the conversion from MT downlink to DU downlink

CellGroupID;//The corresponding cell group ID, such as the TAG ID, can have multiple values

TCI-stateId; // The corresponding TCI identifier, which can have multiple values

}

In the above example, there may be only one CellGroupID and TCI-stateId.

For another example, when the first information is the number of protection symbols, the information element of the indication information may be as follows:

MT-DU-guardsymbol-number:

{

Value; // Number of protection symbols for DU and MT

}

In the above example, there may be only one CellGroupID and TCI-stateId.

For another example, when the first information is the end symbol of the available downlink resources of the MT, the information element of the indication information may be as follows:

MT-Start-end-symbol:

{

value; // The start and end symbols of MT, which can be represented by SLIV (start and length indicator)

}

The following is an explanation of how to use one of the first information corresponding to each of the second information of the MT based on the time domain location of the first node based on the DU resource, the resource type of the DU resource, the resource availability of the DU resource, and the second information of the MT. Multiple sets of time domain locations to determine the MT are described in detail. Because the principle of determining the time domain position of each set of MT is the same. Therefore, the following is an example to determine a set of MT's time domain position for description:

The first node may calculate the last usable symbol of the MT according to the first DU usable symbol of a section of continuous DU usable symbols, or calculate the first usable symbol of the MT according to the last DU usable symbol of a section of continuous DU usable symbols. It should be understood that the available symbols of the DU include symbols that are always available to the DU, that is, the hard symbols of the DU, and also include the available symbols of the DU determined through dynamic signaling, for example, the soft symbols of the DU indicated as available through dynamic signaling.

That is, the first node may determine the position of the start symbol of the MT located behind the DU resource according to the position of the end symbol of the DU resource and the first information. For example, the first information is b, and b is the number of protection symbols for switching from DU resources to MT resources. The first node determines that the position of the start symbol of the MT is after the end symbol of the DU resource and is separated by b symbols from the end symbol of the DU resource. For another example, the first information is f, and f is the available symbol offset f for switching the DU resource to the MT resource. The first node determines that the position of the start symbol of the MT is after the end symbol of the DU resource and is offset from the end symbol of the DU resource by f symbols.

The first node may determine the position of the end symbol of the MT resource located in front of the DU resource according to the position of the start symbol of the DU resource and the first information. For example, the first information is a, a is the number of protection symbols for switching the MT resource to the DU resource. The first node determines that the end symbol of the MT resource is before the start symbol of the DU resource and is separated by a symbols from the start symbol of the DU resource. For another example, the first information is e, and e is the available symbol offset for switching the MT resource to the DU resource. The first node determines that the position of the end symbol of the MT is after the start symbol of the DU resource and the offset from the start symbol of the DU resource is e symbols.

Wherein, if the first information is the time difference, the first node needs to determine the protection parameter according to the time difference, and then determine the available time domain position of the MT according to the protection parameter.

If the first information is the index of the start symbol of the MT available resource, the first node can determine the MT based on the time domain location of the DU resource, the resource type of the DU resource, and the start symbol of the MT available resource corresponding to each second information. Multiple sets of time domain positions. For example, the first node may determine the time slots in which the multiple start symbols of the MT available resources are respectively located according to the time domain location of the DU resource and the resource type of the DU resource, thereby determining multiple sets of available time domain locations of the MT.

If the first information is the index of the end symbol of the MT available resource, the first node can determine the number of MT based on the time domain location of the DU resource, the resource type of the DU resource, and the end symbol of the MT available resource corresponding to each second information. Set the time domain position. For example, the first node may determine the time slots in which the multiple end symbols of the MT available resources are respectively located according to the time domain location of the DU resource and the resource type of the DU resource, thereby determining multiple sets of available time domain locations of the MT.

The first node can obtain the time domain position or index of the DU hard symbol of the IAB node by the following method: the host node of the IAB node configures the hard/soft resource type of the DU for the IAB node. Or, the special signal or channel of the IAB node DU is used to send or receive resources, and is converted into DU hard resource. The special signal or channel can include but is not limited to synchronization signal block (synchronization signal block, SSB), random access channel (random access) channel, RACH), periodic channel state information reference signal (channel state information reference signal, CSI-RS), broadcast channel for sending system message 1 (system information block 1, SIB1), etc. In a possible implementation, the special signal may be a cell-level signal or channel of the DU.

When the resource occupied by a special signal is regarded as a hard resource, both the IAB node and its superior node need to know the time domain location of the special signal. Therefore, the donor node needs to send the special signal configuration information of the IAB node DU to the superior node of the IAB node. For example, the donor node sends the SSB configuration information, PRACH configuration information, and SIB1-PDCCH configuration information of the IAB node DU to the superior node of the IAB node.

The resources occupied by the IAB node DU sending CSI-RS or receiving SR (scheduling request) may also be regarded as hard resources by the IAB node and higher-level nodes. However, because the IAB node DU may frequently configure and reconfigure user-level CSI-RS And SR, etc., the donor node may not be able to send all the CSI-RS and SR configuration information to the superior node of the IAB node.

In order to solve the above technical problems, the donor node can regard part of the resources occupied by the CSI-RS or SR as hard resources of the IAB node DU.

The following takes CSI-RS as an example for specific description, but this solution can also be applied to SR or other IAB node DUs to receive and send signals, such as periodic physical uplink control channel PUCCH, tracking reference signal (Tracking Reference Signal, TRS).

If only part of the resources occupied by the CSI-RS are regarded as hard resources, the IAB node and its superior nodes need to have a consistent understanding of this part of the resources. In other words, both the upper-level node and the IAB node need to know the CSI-RS resource configuration information that is regarded as a hard resource.

In a possible implementation, the donor node sends part of the CSI-RS configuration information of the IAB node DU to the superior node of the IAB node, and the Donor node also sends this part of the CSI-RS configuration information or identification information to the IAB node In this way, both the IAB node and the upper-level node can learn which CSI-RS resources are regarded as hard resources. Among them, the CSI-RS configuration information may include configuration information such as CSI-RS time domain information, frequency domain information, and period information.

Optionally, the IAB node may report part of the CSI-RS configuration information to the donor node, requesting the donor node to regard the resources occupied by this part of the CSI-RS as hard. After reporting part of the CSI-RS information, the IAB node regards the reported part of CSI-RS resources as hard resources. Wherein, reporting part of CSI-RS configuration information may be by indicating this part of CSI-RS time-frequency domain resources, or by indicating this part of CSI-RS index or list.

Optionally, the donor node may send confirmation information to the IAB node, the confirmation information indicating whether the reported CSI-RS resources are regarded as hard resources, or which CSI-RS resources can be regarded as hard resources. It should be understood that part of the CSI-RS resources confirmed by the donor node may not be equal to the part of the CSI-RS resources reported by the IAB node.

Optionally, the Donor node sends part or all of the CSI-RS resource information reported by the IAB node to the upper-level node of the IAB node, indicating that this part of the CSI-RS resources will be regarded as hard resources.

After the above-mentioned part of the CSI-RS resources are regarded as hard resources, the IAB node and its upper-level node can insert the protection symbols according to the foregoing or following embodiment schemes.

In order to better understand the resource determination method provided by the embodiments of the present application, the following detailed description will be given in conjunction with actual examples.

Scenario 1: The first node determines the end position of the available symbols for the MT according to the boundary symbols of the DU hard resource and the number of protection symbols.

For example, the first node determines A1 corresponding to TCI-state#0 (that is, the protection parameter for switching MT downlink resources to DU uplink resources) and A2 corresponding to TCI-state#1 (that is, the switching of MT downlink resources to DU uplink resources). Protection parameters). The first node determines the first uplink hard symbol of the DU according to the time domain location of the DU resource and the type and nature of the DU resource. As shown in Figure 18, the first uplink hard symbol of the DU is symbol 4 of time slot 1. If A1 and A2 are the number a of protection symbols, A1 is equal to 1, and A2 is equal to 2. Then, it can be determined that the available symbol end position of the time domain position of the first set of MTs is symbol 2 of time slot 1, and it can be determined that the available symbol end position of the time domain location of the second set of MTs is symbol 1 of time slot 1. The time domain position of the first set of MT corresponds to TCI-state#0, and the transmission corresponding to TCI-state#0 is performed at the time domain position of the first set of MT. The time domain position of the second set of MT corresponds to TCI-state#1, and the transmission corresponding to TCI-state#1 is performed at the time domain position of the second set of MT.

In a possible implementation, the description of DU hard resources in scenario 1 is also applicable to DU soft resources that are dynamically determined to be available.

Scenario 2: The first node determines the end position of the MT available symbol according to the boundary symbol of the DU hard resource and the deviation between the index of the start symbol of the DU resource and the index of the end symbol of the MT resource.

For another example, A1 and A2 are the deviation e between the index of the start symbol of the DU uplink resource and the index of the end symbol of the MT downlink resource, A1 is equal to 1, and A2 is equal to 2. As shown in Figure 19, the first uplink hard symbol of the DU is symbol 4 of time slot 1. Then, it can be determined that the available symbol end position of the time domain position of the first set of MT is symbol 3 of time slot 1, and it can be determined that the available symbol end position of the time domain location of the second set of MT is symbol 2 of time slot 1. The time domain position of the first set of MT corresponds to TCI-state#0, and the transmission corresponding to TCI-state#0 is performed at the time domain position of the first set of MT. The time domain position of the second set of MT corresponds to TCI-state#1, and the transmission corresponding to TCI-state#1 is performed at the time domain position of the second set of MT.

In a possible implementation, the description of DU hard resources in scenario 2 is also applicable to DU soft resources that are dynamically determined to be available.

In a possible implementation, the DU of the IAB node has multiple cells (cells), and different DU cells may have different DU resource configurations or time domain locations of available DU resources. At this time, to determine the time domain resources of the MT, the resource configuration of multiple DU cells needs to be considered. In addition, the first information (ie, time difference, protection parameter or symbol index information) corresponding to different MT cell groups may correspond to handover between the MT cell group and different DU cells. For example, suppose that the protection parameters corresponding to the cell group 1 of the MT are different from the protection parameters corresponding to the cell group 2 of the MT. Among them, the protection parameter corresponding to MT cell group 1 represents the protection parameter of handover between MT cell group 1 and DU cell group A, and the protection parameter of MT cell group 2 represents the protection of handover between MT cell group 2 and DU cell group B. parameter. Optionally, the same MT cell and different DU cells may also have different protection parameters, and the determination and reporting methods are similar to those in the foregoing embodiment, and will not be repeated. The second information may be a combination of MT cell (or component carrier) and DU cell.

It can be seen that by implementing the method described in FIG. 15, the time domain resources of the backhaul link can be accurately determined.

In a possible implementation manner, the second information further includes sub-carrier spacing information of the guard symbols and/or cyclic prefix (CP) type information. Exemplarily, for the low frequency band below 6GHz, the value of the subcarrier spacing includes 15kHz or 30kHz or 60kHz, and for the high frequency band above 6GHz (including 6Ghz), the value of the subcarrier spacing includes 60kHz or 120kHz. Or 240kHz.

In a possible implementation, the superior node or host node of the first node requests the first node to report the first information, and the superior node or host node may carry part or all of the second information when requesting the first node to report the first information. information. For example, the upper node or the donor node carries the cell identity of the first node MT and/or the cell identity of the first node DU in the request signaling. Alternatively, the upper-level node or the host node carries the protection symbol sub-carrier spacing information and/or CP type in the request signaling.

Exemplarily, the upper-level node or host node may carry the following information in the request signaling:

GuardSymbol-reporting-trigger:

{

ServCellIndex; //MT cell ID, which may contain one or more values

DUCellIndex; // DU cell ID, which may contain one or more values

SubcarrierSpacing;//The subcarrier spacing of the protection symbol

}

After receiving the above request signaling, the first node reports the first information based on the second information in the request signaling, for example, reports the number of protection symbols based on the subcarrier interval information provided in the request signaling.

In another possible implementation manner, the upper-level node or the host node sends the first information to the first node, for example, the upper-level node or the host node configures the protection symbol number information to the first node. The information about the number of protection symbols configured by the upper-level node or the host node indicates the number of protection symbols used by the upper-level node or the host node during backhaul link transmission.

Optionally, when the upper-level node or the host node configures the protection symbol number information, it may also carry part or all of the second information.

Exemplarily, the upper-level node or host node may carry the following information when sending information about the number of protection symbols:

GuardSymbol-config:

{

ServCellIndex; //MT cell ID, which may contain one or more values

DUCellIndex; // DU cell ID, which may contain one or more values

SubcarrierSpacing;//The subcarrier spacing of the protection symbol

Value 0; // MT uplink to DU uplink switching corresponding to the number of protection symbols information

Value 1; // MT uplink to DU downlink switching corresponding to the number of protection symbols information

Value 2; // MT downlink to DU uplink switching corresponding to the number of protection symbols information

Value 3; // MT downlink to DU downlink switching corresponding to the number of protection symbols information

Value 4; // DU uplink to MT uplink switching corresponding to the number of protection symbols information

Value 5; // DU uplink to MT downlink switching corresponding to the number of protection symbols information

Value 6; // DU downlink to MT uplink switching corresponding to the number of protection symbols information

Value 7; // DU downlink to MT downlink handover corresponding to the number of protection symbols information

}

After reporting the first information by the first node and after the configuration of the superior node or the host node, the first node and the superior node of the first node may have two sets of protection symbol information, one of which is the reported value, and the other is Is the configuration value.

In one possible implementation, the configuration value overrides the reported value, that is, the reported value is a subset of the configuration value.

In another possible implementation, the reported value and the configuration value are respectively applied to different scenarios. For example, for DU hard resources obtained from resource configuration information or DU available resources obtained according to dynamic indication signaling, the first node and the upper node determine the MT resource according to the information about the number of configured protection symbols; and for the cell-level signal from the IAB node DU For the converted DU hard resource, the first node and the upper-level node determine the MT resource according to the information about the number of protected symbols reported.

The method for determining protection parameters for switching between MT resources and DU uplink resources/downlink resources is described above, and the method for determining protection parameters for switching between MT resources and DU flexible resources is described below.

Please refer to 20, 20 for a flowchart of a resource determination method provided by this application. The method includes:

In 2001, the first node determines the first information.

Wherein, the first information includes a first protection parameter and/or a second protection parameter, the first protection parameter is a protection parameter for switching between the MT resource of the IAB node and the uplink resource of the DU, and the second protection parameter is the MT resource and the DU. The protection parameters for handover of downlink resources. That is, the first node determines the first protection parameter. Or, the first node determines the second protection parameter. Alternatively, the first node determines the first protection parameter and the second protection parameter.

Among them, the protection parameter for switching between the MT resource of the IAB node and the uplink resource of the DU may be the guard interval for switching between the MT resource and the uplink resource of the DU, and the number of protection symbols for switching between the MT resource and the uplink resource of the DU. Or the available symbol index deviation for switching between the MT resource and the uplink resource of the DU. For the specific introduction of these three protection parameters, please refer to the corresponding description in the above-mentioned protection parameter determination method, which will not be repeated here.

Among them, the protection parameter for switching between the MT resource of the IAB node and the downlink resource of the DU may be the guard interval for switching between the MT resource and the downlink resource of the DU, and the number of protection symbols for switching between the MT resource and the downlink resource of the DU. Or the available symbol index deviation for switching between the MT resource and the downlink resource of the DU. For the specific introduction of these three protection parameters, please refer to the corresponding description in the above-mentioned protection parameter determination method, which will not be repeated here.

Among them, the first node may be the IAB node itself. Alternatively, the first node may also be an upper node or host node of the IAB node. In specific implementation, the IAB node may be a network device, such as a relay device, or it may be an IAB node. Or the IAB node may be a terminal device, such as a UE relay. Or the IAB node may also be other IAB nodes that need to return data with other IAB nodes, etc., which is not specifically limited here.

2001. The first node determines, according to the first information, a protection parameter for switching between the MT resource and the flexible resource of the DU.

Among them, the flexible resource of the DU means that the resource can be used for uplink transmission or downlink transmission. Specifically, after determining the first information, the first node determines the protection parameters for switching between the MT resource and the flexible resource of the DU according to the first information.

For example, to determine the protection parameters for switching between the downlink resources of the MT and the flexible resources of the DU as an example. The first information acquired by the first node includes the first protection parameter and/or the second protection parameter. The first protection parameter is a protection parameter for switching between the downlink resource of the MT and the uplink resource of the DU, and the second protection parameter is a protection parameter for switching between the downlink resource of the MT and the downlink resource of the DU.

The first protection parameter for switching between the downlink resource of the MT and the uplink resource of the DU may be the guard interval for switching between the downlink resource of the MT and the uplink resource of the DU, and the protection for switching between the downlink resource of the MT and the uplink resource of the DU. The number of symbols or the available symbol index deviation for switching between the downlink resources of the MT and the uplink resources of the DU.

The second protection parameter for switching between the downlink resource of the MT and the downlink resource of the DU may be the guard interval for switching between the downlink resource of the MT and the downlink resource of the DU, and the protection for switching between the downlink resource of the MT and the downlink resource of the DU. The number of symbols or the available symbol index deviation for switching between the downlink resources of the MT and the downlink resources of the DU.

Among them, if it is determined that the downlink resource of the MT is switched to the protection parameter of the flexible resource of the DU. Then the first protection parameter is the protection parameter for switching the downlink resource of the MT to the uplink resource of the DU, and the second protection parameter is the protection parameter for switching the downlink resource of the MT to the downlink resource of the DU. If it is determined that the flexible resource of the DU is switched to the protection parameter of the downlink resource of the MT. Then the first protection parameter is the protection parameter of switching the uplink resource of the DU to the downlink resource of the MT, and the second protection parameter is the protection parameter of switching the downlink resource of the DU to the downlink resource of the MT.

The first node determines the protection parameter for switching between the MT downlink resource and the flexible resource of the DU according to the first protection parameter and the second protection parameter.

Another example is to determine the protection parameters for switching between the uplink resources of the MT and the flexible resources of the DU as an example. The first information acquired by the first node includes the first protection parameter and/or the second protection parameter. The first protection parameter is a protection parameter for switching between the uplink resource of the MT and the uplink resource of the DU, and the second protection parameter is a protection parameter for switching between the uplink resource of the MT and the downlink resource of the DU.

The first protection parameter for switching between the uplink resources of the MT and the uplink resources of the DU may be the protection interval for switching between the uplink resources of the MT and the uplink resources of the DU, and the protection for switching between the uplink resources of the MT and the uplink resources of the DU. The number of symbols or the available symbol index deviation for switching between the uplink resources of the MT and the uplink resources of the DU.

The second protection parameter for switching between the uplink resource of the MT and the downlink resource of the DU may be the guard interval for switching between the uplink resource of the MT and the downlink resource of the DU, and the protection for switching between the uplink resource of the MT and the downlink resource of the DU. The number of symbols or the available symbol index deviation for switching between the uplink resources of the MT and the downlink resources of the DU.

Among them, if it is determined that the uplink resource of the MT is switched to the protection parameter of the flexible resource of the DU. Then the first protection parameter is the protection parameter for switching the uplink resource of the MT to the uplink resource of the DU, and the second protection parameter is the protection parameter for switching the uplink resource of the MT to the downlink resource of the DU. If it is determined that the flexible resource of the DU is switched to the protection parameter of the uplink resource of the MT. Then the first protection parameter is the protection parameter of switching the uplink resource of the DU to the uplink resource of the MT, and the second protection parameter is the protection parameter of switching the downlink resource of the DU to the uplink resource of the MT.

The first node determines the protection parameter for switching between the uplink resource of the MT and the flexible resource of the DU according to the first protection parameter and the second protection parameter.

In a possible implementation, the first node specifically obtains the first protection parameter and the second protection parameter, and the protection parameter for switching between the MT resource and the flexible resource of the DU is the maximum value of the first protection parameter and the second protection parameter.

For example, the guard interval for switching the downlink resource of the MT to the downlink resource of the DU is T1, and the guard interval for switching the downlink resource of the MT to the uplink resource of the DU is T2. If the guard interval T1 is greater than the guard interval T2. The first node may determine the guard interval T1 as the guard interval for switching the downlink resource of the MT to the flexible resource of the DU.

For another example, the number of protection symbols for switching the downlink resource of the MT to the downlink resource of the DU is 2, and the number of protection symbols for switching the downlink resource of the MT to the uplink resource of the DU is 1. The first node may determine that the number of protection symbols for switching the downlink resource of the MT to the flexible resource of the DU is 2.

For another example, the available symbol index deviation of the downlink resource of the MT switched to the downlink resource of the DU is 3, and the available symbol index deviation of the downlink resource of the MT switched to the uplink resource of the DU is 2. The first node may determine that the available symbol index deviation of the MT's downlink resource switching to the DU's flexible resource is 3.

In a possible implementation, the first node specifically obtains the first protection parameter and the second protection parameter, and the protection parameter for switching between the MT resource and the flexible resource of the DU is the minimum value of the first protection parameter and the second protection parameter.

For example, the guard interval for switching the downlink resource of the MT to the downlink resource of the DU is T1, and the guard interval for switching the downlink resource of the MT to the uplink resource of the DU is T2. If the guard interval T1 is greater than the guard interval T2. The first node may determine the guard interval T2 as the guard interval for switching the downlink resource of the MT to the flexible resource of the DU.

For another example, the number of protection symbols for switching the downlink resource of the MT to the downlink resource of the DU is 2, and the number of protection symbols for switching the downlink resource of the MT to the uplink resource of the DU is 1. The first node may determine that the number of protection symbols for switching the downlink resource of the MT to the flexible resource of the DU is one.

For another example, the available symbol index deviation of the downlink resource of the MT switched to the downlink resource of the DU is 3, and the available symbol index deviation of the downlink resource of the MT switched to the uplink resource of the DU is 2. The first node may determine that the available symbol index deviation of the MT's downlink resource switching to the DU's flexible resource is 2.

In a possible implementation, the first node may determine the hypothetical resource type of the flexible resource of the DU; if the hypothetical resource type is uplink. Then the first node obtains the first protection parameter (that is, the protection parameter for switching between the MT resource and the uplink resource of the DU), and determines that the first protection parameter is the protection parameter for switching between the MT resource and the flexible resource of the DU. If it is assumed that the resource type is downlink. Then the first node obtains the second protection parameter (that is, the protection parameter for switching between the MT resource and the downlink resource of the DU), and determines that the second protection parameter is the protection parameter for switching between the MT resource and the flexible resource of the DU.

Among them, the hypothetical resource type refers to the hypothetical DU flexible resource type. For example, the first node may assume that the start symbol of the DU flexible resource is an uplink symbol. The end symbol of the DU flexible resource is a downlink symbol. Then, the first node determines that the protection parameter of the uplink resource of the MT resource being switched to the DU is the protection parameter of the flexible resource of the MT resource being switched to the DU. The first node determines that the protection parameter for switching the downlink resource of the DU to the MT resource is the protection parameter for switching the flexible resource of the DU to the MT resource.

Alternatively, the first node may assume that the start symbol of the DU flexible resource is a downlink symbol. The end symbol of the DU flexible resource is an uplink symbol. Then, the first node determines that the protection parameter of the downlink resource of the MT resource being switched to the DU is the protection parameter of the flexible resource of the MT resource being switched to the DU. The first node determines that the protection parameter for switching the uplink resource of the DU to the MT resource is the protection parameter for switching the flexible resource of the DU to the MT resource.

In a possible implementation, when the first node is the IAB node itself, the assumed resource type can be assumed by the IAB node itself. The first node may also report the hypothetical resource type of the flexible resource of the DU to the superior node or the host node of the first node. Therefore, the upper node or the host node of the first node can determine the protection parameter for switching between the uplink resource of the MT and the flexible resource of the DU according to the assumed resource type of the flexible resource of the DU.

In an optional implementation, when the first node is the superior node or the host node of the IAB node, the first node may also receive the hypothetical resource type of the flexible resource of the DU reported by the IAB node. The first node determines the protection parameter for switching between the uplink resource of the MT and the flexible resource of the DU according to the assumed resource type of the flexible resource of the DU.

In a possible implementation, when the first node is the IAB node itself, the first node receives the configuration information sent by the superior node or the host node of the first node, and the configuration information is used to configure the hypothetical resource type of the flexible resource of the DU. The hypothetical resource type of the flexible resource of the DU can be configured by the superior node or the host node of the IAB node for the IAB node.

In a possible implementation, when the first node is the superior node or host node of the IAB node, the first node may also send configuration information to the IAB node, where the configuration information is used to configure the hypothetical resource type of the flexible resource of the DU. Therefore, the IAB node can determine the protection parameters for switching between the uplink resource of the MT and the flexible resource of the DU according to the assumed resource type of the flexible resource of the DU. Wherein, the superior node or the host node can respectively configure the hypothetical resource type of the start symbol of the flexible resource and the hypothetical resource type of the end symbol of the flexible resource of the DU.

In a possible implementation, when the first node is the IAB node itself, after the IAB node determines the protection parameters for switching between the MT resource and the flexible resource of the DU, it can also report the MT resource and the flexible resource of the DU to the superior node or the host node. Protection parameters for switching.

It can be seen that by implementing the method described in 20, the protection parameters for switching between the MT resource and the flexible resource of the DU can be accurately determined.

Based on the same technical concept as the method embodiment, the embodiment of the present application provides a resource determination device. The description of the method in this application also applies to the device part. The resource determination device can be specifically used to implement the method executed by the first node in the embodiments of FIG. 15 to FIG. 19. The device may be the first node itself, or the chip or chipset in the first node or the chip used in the chip. Perform part of the function of the related method, where the first node can be an IAB node, or an upper node or host node of the IAB node. The structure of the device may be as shown in FIG. 21, including a processing unit 2101 and a storage unit 2102. among them:

The storage unit 2102 is used to store code instructions;

The processing unit 2101 is used to call the code stored in the storage unit 2102 to execute:

Determine the time domain location of the DU resource of the distribution unit of the communication device;

Determine multiple sets of time-domain positions of the mobile terminal MT of the communication device. The multiple sets of time-domain positions of the MT are related to one or more of the following information: the time-domain position of the DU resource, the resource type of the DU resource, and the resource of the DU resource Properties, dynamic resource indication information of the DU, and first information corresponding to each of the multiple second information of the MT, where the second information includes receiving configuration information, sending configuration information, or cell group information;

Wherein, the first information includes time difference, protection parameter or symbol index information, the time difference is the time difference between the DU resource and the MT resource, the protection parameter is the protection parameter for switching between the DU resource and the MT resource, and the symbol index information It is the index of the start symbol of the available resource of the MT, or the symbol index information is the index of the end symbol of the available resource of the MT.

In a possible implementation, the second information is reception configuration information, or the second information is cell group information, the time difference is the time difference between the DU resource and the MT downlink resource, and the protection parameter is the DU resource and the MT downlink resource The symbol index information is the index of the start symbol of the downlink available resource of the MT, or the symbol index information is the index of the end symbol of the downlink available resource of the MT.

In a possible implementation, the second information is receiving configuration information, and the multiple pieces of second information of the MT correspond to one cell group information of the MT.

In a possible implementation, the second information is the transmission configuration information of the MT, or the second information is the cell group information; the time difference is the time difference between the DU resource and the uplink resource of the MT, and the protection parameter is the difference between the DU resource and the MT. For protection parameters for switching between uplink resources, the symbol index information is the index of the start symbol of the uplink available resources of the MT, or the symbol index information is the index of the end symbol of the uplink available resources of the MT.

In a possible implementation, the second information is sending configuration information, and the multiple pieces of second information of the MT correspond to one cell group information of the MT.

In a possible implementation, the resource determining apparatus is deployed in a communication device, or the resource determining apparatus is deployed in an upper node or a host node of the communication device.

In a possible implementation, if the device for determining the resource is deployed on the upper node or host node of the communication device, the device further includes: a transceiving unit 2103, configured to receive indication information reported by the communication device, and the indication information is used to indicate multiple MTs. The first information corresponding to each second information in the second information;

If the resource determining apparatus is deployed in a communication device, the processing unit 2101 is further configured to determine the first information corresponding to each second information among the multiple second information of the MT.

In a possible implementation, if the device for determining the resource is deployed in a communication device, the device further includes: a transceiver unit 2103, configured to report indication information to the second node, and the indication information is used to indicate each of the plurality of second information of the MT. The first information corresponding to the second information, and the second node is an upper-level node or a host node of the communication device.

Based on the same technical idea as the method embodiment, the embodiment of the present application provides a protection parameter determination device. The protection parameter determination device may be specifically used to implement the method executed by the first node in the embodiment of FIG. 20. The device may be the first node itself, or the chip or chipset in the first node or the chip used to perform related Part of the method function, where the first node can be an IAB node, or an upper node or host node of the IAB node. The structure of the device may be as shown in FIG. 22, including a processing unit 2201 and a storage unit 2202. among them:

The storage unit 2202 is used to store code instructions;

The processing unit 2201 is used to call the code stored in the storage unit 2202 to execute:

Determine first information. The first information includes a first protection parameter and/or a second protection parameter. The first protection parameter is a protection parameter for switching between the mobile terminal MT resource of the communication device and the uplink resource of the distribution unit DU. The second protection parameter is a protection parameter for switching between the MT resource and the downlink resource of the DU;

The protection parameters for switching between the MT resource and the flexible resource of the DU are determined according to the first information.

In a possible implementation, the first information includes the first protection parameter and the second protection parameter, and the protection parameter for switching between the MT resource and the flexible resource of the DU is the maximum or minimum of the first protection parameter and the second protection parameter. value.

In a possible implementation, the first information includes the first protection parameter,

The processing unit 2201 is further configured to determine that the hypothetical resource type of the flexible resource of the DU is uplink before determining the first information;

The method for the processing unit 2201 to determine the protection parameter for switching between the MT resource and the flexible resource of the DU according to the first information is specifically: determining the first protection parameter as the protection parameter for switching between the MT resource and the flexible resource of the DU.

In a possible implementation, the first information includes the second protection parameter, and the processing unit 2201 is further configured to determine that the hypothetical resource type of the flexible resource of the DU is downlink before determining the first information;

The method for the processing unit 2201 to determine the protection parameter for switching between the MT resource and the flexible resource of the DU according to the first information is specifically: determining the second protection parameter as the protection parameter for switching between the MT resource and the flexible resource of the DU.

In a possible implementation, the protection parameter determination device is deployed in a communication device, and the device further includes:

The transceiver unit 2203 is configured to receive configuration information sent by an upper node or a host node of the communication device, and the configuration information is used to configure a hypothetical resource type of the flexible resource of the DU.

The transceiver unit 2203 is configured to report the hypothetical resource type of the flexible resource of the DU to the upper node or the host node of the communication device.

The transceiver unit 2203 is configured to report the protection parameters for switching between the MT resource and the flexible resource of the DU to the upper node or the host node of the communication device.

In a possible implementation, the protection parameter determination device is deployed on the upper node or host node of the communication device, and the device further includes:

The transceiver unit 2203 is configured to send configuration information to the communication device, and the configuration information is used to configure the hypothetical resource type of the flexible resource of the DU.

The transceiver unit 2203 is configured to receive the hypothetical resource type of the flexible resource of the DU reported by the communication device.

The division of units in the embodiments of this application is illustrative, and is only a logical function division. In actual implementation, there may be other division methods. In addition, the functional units in the various embodiments of this application can be integrated into one processing unit. In the device, it can also exist alone physically, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It can be understood that, for the function or implementation of each unit in the embodiment of the present application, reference may be made to the related description of the method embodiment.

In one possible manner, the device for determining resources may be as shown in FIG. 23. The device may be the first node or a chip in the first node, where the first node may be a communication device or an upper-level node of the communication device. Or host node. The device may include a processor 2301, a communication interface 2302, and a memory 2303. The processing unit 2101 may be a processor 2301. The transceiver unit 2103 may be a communication interface 2302.

The processor 2301 may be a central processing unit (central processing unit, CPU), or a digital processing unit, and so on. The communication interface 2302 may be a transceiver, an interface circuit such as a transceiver circuit, etc., or a transceiver chip, and so on. The device also includes a memory 2303, which is used to store a program executed by the processor 2301. The memory 2303 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., and may also be a volatile memory, such as random access memory (random access memory). -access memory, RAM). The memory 2303 is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited to this.

The processor 2301 is configured to execute the program code stored in the memory 2303, and is specifically configured to execute the actions of the above-mentioned processing unit 2101, which will not be repeated here in this application. The communication interface 2302 is specifically configured to perform the actions of the above-mentioned transceiver unit 2103, which will not be repeated in this application. The memory 2303 is specifically configured to execute the actions of the above-mentioned storage unit 2102, and details are not described herein again in this application.

The specific connection medium between the aforementioned communication interface 2302, the processor 2301, and the memory 2303 is not limited in the embodiment of the present application. In the embodiment of the present application in FIG. 23, the memory 2303, the processor 2301, and the communication interface 2302 are connected by a bus 2304. The bus is represented by a thick line in FIG. 23. The connection mode between other components is only for schematic illustration. , Is not limited. The bus can be divided into an address bus, a data bus, a control bus, and so on. For ease of representation, only one thick line is used in FIG. 23 to represent it, but it does not mean that there is only one bus or one type of bus.

In one possible manner, the protection parameter determination device may be as shown in FIG. 24, and the device may be the first node or a chip in the first node, where the first node may be a communication device or an upper level of the communication device. Node or host node. The device may include a processor 2401, a communication interface 2402, and a memory 2403. The processing unit 2201 may be a processor 2401. The transceiving unit 2203 may be a communication interface 2402.

The processor 2401 may be a central processing unit (central processing unit, CPU), or a digital processing unit, and so on. The communication interface 2402 may be a transceiver, an interface circuit such as a transceiver circuit, etc., or a transceiver chip, and so on. The device also includes a memory 2403, which is used to store a program executed by the processor 2401. The memory 2403 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., and may also be a volatile memory, such as random access memory (random access memory). -access memory, RAM). The memory 2403 is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited to this.

The processor 2401 is configured to execute the program code stored in the memory 2403, and is specifically configured to execute the actions of the above-mentioned processing unit 2201, which will not be repeated in this application. The communication interface 2402 is specifically configured to perform the actions of the above-mentioned transceiver unit 2203, which will not be repeated in this application. The memory 2403 is specifically configured to execute the actions of the above-mentioned storage unit 2202, and details are not described herein again in this application.

The specific connection medium between the aforementioned communication interface 2402, the processor 2401, and the memory 2403 is not limited in the embodiment of the present application. In the embodiment of the application in FIG. 24, the memory 2403, the processor 2401, and the communication interface 2402 are connected by a bus 2404. The bus is represented by a thick line in FIG. 24. The connection mode between other components is only for schematic illustration. , Is not limited. The bus can be divided into an address bus, a data bus, a control bus, and so on. For ease of presentation, only a thick line is used in Figure 24 to represent it, but it does not mean that there is only one bus or one type of bus.

The embodiment of the present invention also provides a computer-readable storage medium for storing computer software instructions required to be executed to execute the foregoing processor, which contains a program required to execute the foregoing processor.

The embodiment of the present invention also provides a computer program product. When the computer program product runs on a processor, the method flow of the above method embodiment is realized.

When software is used to implement the equipment provided in this application, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are realized. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server, or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. The usable medium may be a magnetic medium, (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

The descriptions of the various embodiments provided in this application may refer to each other, and the descriptions of the various embodiments have their own emphasis. For parts that are not described in detail in an embodiment, reference may be made to related descriptions of other embodiments. For the convenience and brevity of description, for example, for the functions and execution steps of the devices and equipment provided in the embodiments of this application, please refer to the related descriptions of the method embodiments of this application. Can refer to each other, combine or cite.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or equivalently replace some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application. range.

Claims

A method for determining resources, characterized in that the method includes:

The first node determines the time domain location of the DU resource of the distribution unit of the communication device;

The first node determines multiple sets of time domain locations of the mobile terminal MT of the communication device, and the multiple sets of time domain locations of the MT are related to one or more of the following information: the time domain location of the DU resource , The resource type of the DU resource, the resource nature of the DU resource, the dynamic resource indication information of the DU, the first information corresponding to each of the second information of the MT, the The second information includes receiving configuration information, sending configuration information, or cell group information;

Wherein, the first information includes time difference, protection parameter or symbol index information, the time difference is the time difference between the DU resource and the MT resource, and the protection parameter is the time difference between the DU resource and the MT resource. For the protection parameter of the handover, the symbol index information is the index of the start symbol of the available resource of the MT, or the symbol index information is the index of the end symbol of the available resource of the MT.
The method according to claim 1, wherein the second information is the reception configuration information, or the second information is the cell group information, and the time difference is the DU resource and the The time difference between the downlink resources of the MT, the protection parameter is a protection parameter for switching between the DU resource and the downlink resource of the MT, and the symbol index information is the start symbol of the downlink available resource of the MT Or, the symbol index information is the index of the end symbol of the downlink available resources of the MT.
The method according to claim 2, wherein the second information is the receiving configuration information, and multiple pieces of second information of the MT correspond to one cell group information of the MT.
The method according to any one of claims 1 to 3, wherein the receiving configuration information is receiving configuration information configured for the MT by an upper node of the communication device, or the receiving configuration information The reception configuration information set for the control resource configured by the MT, or the reception configuration information is the reception configuration information of the physical downlink shared channel PDSCH configured by the MT.
The method according to claim 1, wherein the second information is transmission configuration information of the MT, or the second information is the cell group information; and the time difference is the DU resource and The time difference between the uplink resources of the MT, the protection parameter is a protection parameter for switching between the DU resource and the uplink resource of the MT, and the symbol index information is the start of the uplink available resources of the MT. The index of the start symbol, or the symbol index information is the index of the end symbol of the uplink available resources of the MT.
The method according to claim 5, wherein the second information is the transmission configuration information, and multiple pieces of second information of the MT correspond to one cell group information of the MT.
The method according to any one of claims 1 to 6, wherein the sending configuration information is sending configuration information configured for the MT by an upper node of the communication device, or the sending configuration information The transmission configuration information of the physical uplink control channel PUCCH configured for the MT, or the transmission configuration information is the transmission configuration information of the sounding reference signal SRS transmission configured by the MT.
The method according to any one of claims 1 to 7, wherein the first node is the communication device, or the first node is an upper node or a host node of the communication device.
The method according to claim 8, wherein if the first node is an upper node or a host node of the communication device, the method further comprises:

Receiving, by the first node, the instruction information reported by the communication device, where the instruction information is used to indicate the first information corresponding to each of the second information of the MT;

If the first node is the communication device, the method further includes:

The first node determines the first information corresponding to each of the second information of the MT.
The method according to claim 9, wherein if the first node is the communication device, after the first node determines the multiple pieces of first information, the method further comprises:

The first node reports indication information to the second node, where the indication information is used to indicate the first information corresponding to each of the second information of the MT, and the second node is the The superior node or host node of the communication device.
A method for determining protection parameters is characterized in that it is applied to a first node, and the method includes:

Determining first information, where the first information includes a first protection parameter and/or a second protection parameter, the first protection parameter being a protection parameter for switching between the mobile terminal MT resource of the communication device and the uplink resource of the distribution unit DU, The second protection parameter is a protection parameter for switching between the MT resource and the downlink resource of the DU;

Determine a protection parameter for switching between the MT resource and the flexible resource of the DU according to the first information.
The method according to claim 11, wherein the first information includes the first protection parameter and the second protection parameter, and the protection parameter for switching between the MT resource and the flexible resource of the DU is The maximum value or the minimum value of the first protection parameter and the second protection parameter.
The method according to claim 11, wherein the first information includes the first protection parameter, and before the first information is determined, the method further comprises:

Determining that the hypothetical resource type of the flexible resource of the DU is uplink;

The determining a protection parameter for switching between the MT resource and the flexible resource of the DU according to the first information includes:

It is determined that the first protection parameter is a protection parameter for switching between the MT resource and the flexible resource of the DU.
The method according to claim 11, wherein the first information includes the second protection parameter, and before the first information is determined, the method further comprises:

Determining that the hypothetical resource type of the flexible resource of the DU is downlink;

The determining a protection parameter for switching between the MT resource and the flexible resource of the DU according to the first information includes:

It is determined that the second protection parameter is a protection parameter for switching between the MT resource and the flexible resource of the DU.
The method according to claim 13 or 14, wherein the first node is the communication device, and the method further comprises:

Receiving configuration information sent by an upper node or a host node of the first node, where the configuration information is used to configure a hypothetical resource type of the flexible resource of the DU.
The method according to claim 13 or 14, wherein the first node is the communication device, and the method further comprises:

Report the hypothetical resource type of the flexible resource of the DU to the superior node or the host node.
The method according to claim 13 or 14, wherein the first node is the communication device, and the method further comprises:

The protection parameter for switching between the MT resource and the flexible resource of the DU is reported to the superior node or the host node.
The method according to claim 13 or 14, wherein the first node is an upper node or a host node of the communication device, and the method further comprises:

Sending configuration information to the communication device, where the configuration information is used to configure the hypothetical resource type of the flexible resource of the DU.
The method according to claim 13 or 14, wherein the first node is an upper node or a host node of the communication device, and the method further comprises:

Receiving the hypothetical resource type of the flexible resource of the DU reported by the communication device.
A resource determining device, characterized in that the device includes:

Storage unit, used to store code instructions;

The processing unit is used to call the code stored in the storage unit to execute:

Determine the time domain location of the DU resource of the distribution unit of the communication device;

Determine multiple sets of time domain locations of the mobile terminal MT of the communication device, where the multiple sets of time domain locations of the MT are related to one or more of the following information: the time domain location of the DU resource, the DU resource The resource type of the DU resource, the resource nature of the DU resource, the dynamic resource indication information of the DU, the first information corresponding to each of the second information of the MT, and the second information includes receiving Configuration information, sending configuration information or cell group information;

Wherein, the first information includes time difference, protection parameter or symbol index information, the time difference is the time difference between the DU resource and the MT resource, and the protection parameter is the time difference between the DU resource and the MT resource. For the protection parameter of the handover, the symbol index information is the index of the start symbol of the available resource of the MT, or the symbol index information is the index of the end symbol of the available resource of the MT.
The apparatus according to claim 20, wherein the second information is the reception configuration information, or the second information is the cell group information, and the time difference is the DU resource and the The time difference between the downlink resources of the MT, the protection parameter is a protection parameter for switching between the DU resource and the downlink resource of the MT, and the symbol index information is the start symbol of the downlink available resource of the MT Or, the symbol index information is the index of the end symbol of the downlink available resources of the MT.
The apparatus according to claim 21, wherein the second information is the receiving configuration information, and multiple pieces of second information of the MT correspond to one cell group information of the MT.
The apparatus according to any one of claims 20-22, wherein the receiving configuration information is receiving configuration information configured for the MT by an upper node of the communication device, or the receiving configuration information The reception configuration information set for the control resource configured by the MT, or the reception configuration information is the reception configuration information of the physical downlink shared channel PDSCH configured by the MT.
The apparatus according to claim 20, wherein the second information is transmission configuration information of the MT, or the second information is the cell group information; and the time difference is the DU resource and The time difference between the uplink resources of the MT, the protection parameter is a protection parameter for switching between the DU resource and the uplink resource of the MT, and the symbol index information is the start of the uplink available resources of the MT. The index of the start symbol, or the symbol index information is the index of the end symbol of the uplink available resources of the MT.
The apparatus according to claim 24, wherein the second information is the transmission configuration information, and multiple pieces of second information of the MT correspond to one cell group information of the MT.
The apparatus according to any one of claims 20 to 25, wherein the transmission configuration information is transmission configuration information configured for the MT by an upper node of the communication device, or the transmission configuration information The transmission configuration information of the physical uplink control channel PUCCH configured for the MT, or the transmission configuration information is the transmission configuration information of the sounding reference signal SRS transmission configured by the MT.
The apparatus according to any one of claims 20 to 26, wherein the resource determining apparatus is deployed on the communication device, or the resource determining apparatus is deployed on an upper node or a host node of the communication device .
The apparatus according to claim 27, wherein if the resource determining apparatus is deployed on an upper-level node or a host node of the communication device, the apparatus further comprises: a transceiver unit, configured to receive information reported by the communication device Indication information, where the indication information is used to indicate the first information corresponding to each of the second information in the plurality of second information of the MT;

If the resource determining apparatus is deployed in the communication device, the processing unit is further configured to determine the first information corresponding to each of the second information of the MT.
The device according to claim 28, wherein if the resource determining device is deployed in the communication device, the device further comprises: a transceiver unit, configured to report instruction information to the second node, and the instruction information is used for To indicate the first information corresponding to each of the second information in the plurality of second information of the MT, the second node is an upper node or a host node of the communication device.
A protection parameter determination device, characterized in that the device includes:

Storage unit, used to store code instructions;

The processing unit is used to call the code stored in the storage unit to execute:

Determining first information, where the first information includes a first protection parameter and/or a second protection parameter, the first protection parameter being a protection parameter for switching between the mobile terminal MT resource of the communication device and the uplink resource of the distribution unit DU, The second protection parameter is a protection parameter for switching between the MT resource and the downlink resource of the DU;

Determine a protection parameter for switching between the MT resource and the flexible resource of the DU according to the first information.
The apparatus according to claim 30, wherein the first information includes the first protection parameter and the second protection parameter, and the protection parameter for switching between the MT resource and the flexible resource of the DU is The maximum value or the minimum value of the first protection parameter and the second protection parameter.
The device according to claim 30, wherein the first information includes the first protection parameter,

The processing unit is further configured to determine that the hypothetical resource type of the flexible resource of the DU is uplink before determining the first information;

The method for the processing unit to determine the protection parameter for switching between the MT resource and the flexible resource of the DU according to the first information is specifically: determining that the first protection parameter is the flexibility between the MT resource and the DU Protection parameters for resource switching.
The apparatus according to claim 30, wherein the first information includes the second protection parameter, and the processing unit is further configured to determine the flexible resource assumption of the DU before determining the first information The resource type is downlink;

The method for the processing unit to determine the protection parameter for switching between the MT resource and the flexible resource of the DU according to the first information is specifically as follows:

It is determined that the second protection parameter is a protection parameter for switching between the MT resource and the flexible resource of the DU.
The device according to claim 32 or 33, wherein the protection parameter determination device is deployed in the communication equipment, and the device further comprises:

The transceiver unit is configured to receive configuration information sent by an upper node or a host node of the communication device, where the configuration information is used to configure a hypothetical resource type of the flexible resource of the DU.
The device according to claim 32 or 33, wherein the protection parameter determination device is deployed in the communication equipment, and the device further comprises:

The transceiver unit is configured to report the hypothetical resource type of the flexible resource of the DU to the upper node or the host node of the communication device.
The device according to claim 32 or 33, wherein the protection parameter determination device is deployed in the communication equipment, and the device further comprises:

The transceiver unit is configured to report the protection parameters for switching between the MT resource and the flexible resource of the DU to the upper node or the host node of the communication device.
The device according to claim 32 or 33, wherein the protection parameter determination device is deployed on an upper node or a host node of the communication device, and the device further comprises:

The transceiver unit is configured to send configuration information to the communication device, where the configuration information is used to configure a hypothetical resource type of the flexible resource of the DU.
The device according to claim 32 or 33, wherein the protection parameter determination device is deployed on an upper node or a host node of the communication device, and the device further comprises:

The transceiver unit is configured to receive the hypothetical resource type of the flexible resource of the DU reported by the communication device.
A computer-readable storage medium, wherein a program or instruction is stored in the computer-readable storage medium, and the program or the instruction can implement claim 1 when read and executed by one or more processors The method described in any one of to 19.
A computer program product, characterized in that, when the computer program product runs on a network device, the network device is caused to execute the method according to any one of claims 1 to 19.