WO2020187115A1 - Method and device for indicating resources - Google Patents

Abstract

Provided in the present application are a method and device for indicating resources, the method comprising: a second node acquiring resource configuration information used for indicating the configuration of fixed resources and dynamic resources of the second node; the second node receiving first indication information that is sent by a first node and that is used to indicate the availability status of one or more of the dynamic resources in a first indication area of the second node, the first node being an upper layer node of the second node; according to the first indication information and the resource configuration information, the second node determining second indication information used for indicating the availability status of resources between the second node and a third node in a second indication area, the second indication area comprising at least one dynamic resource not indicated by the first indication information, and the second indication information indicating the status of the at least one dynamic resource not indicated by the first indication information as unavailable; and the second node sending the second indication information to the third node, the third node being a lower layer node of the second node.

Description

Method and device for indicating resources

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office of China, the application number is 201910200130.2, and the application name is "Method and Device for Indicating Resources" on March 15, 2019, the entire content of which is incorporated into this application by reference in.

Technical field

This application relates to the technical field of access and backhaul integrated IAB, and in particular to a method and device for indicating resources in an IAB system.

Background technique

With the continuous development of mobile communication technology, spectrum resources are becoming increasingly tight. In order to improve spectrum utilization, future base station deployment will be more intensive. In addition, dense deployment can avoid the appearance of coverage holes. The wireless relay node (RN) establishes a connection with the core network through a wireless backhaul link, which can save part of the fiber deployment cost. In the new radio (NR), 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 establishes an access link between the relay node and the UE can control the relay node through a variety of signaling (for example, data scheduling, timing modulation, power control, etc.). In addition, the relay node can provide services for one or more subordinate nodes. The upper node of the relay node can be a base station or another relay node. The subordinate node of the relay node can be the UE or another relay node. The NR in-band relay solution is called integrated access and backhaul (IAB), and the relay node is called an IAB node (IAB node). The IAB node includes a terminal (mobile termination, MT) function and a distributed unit (distributed unit, DU) function. Among them, MT is used for the communication between the IAB node and the upper-level node, and DU is used for the communication between the IAB node and the lower-level node,

In order to dynamically coordinate the bandwidth between the access link and the backhaul link, NR IAB will use two levels of resource indication. Specifically, the two-level resource indication means that the upper-level node configures resources for the DU of the IAB node in an explicit or implicit manner, and the resource type includes at least two types: soft and hard. Among them, the hard resource represents the resource that is always available to the DU of the IAB node, and the availability of the soft resource depends on the instruction of the superior node. The IAB node continues to give resource instructions to its lower-level nodes according to the resource instructions of the upper-level nodes.

However, there are usually multi-level relay nodes in the IAB system, and when the multi-level relay node system adopts the above two-level resource indication, it may cause resource indication conflicts.

Summary of the invention

The present application provides a method for indicating resources, which can avoid the problem of possible conflicts in resource indications of multi-level IAB nodes in the IAB system.

In a first aspect, a method for indicating resources is provided. The method includes: a second node obtains resource configuration information, the resource configuration information is used to indicate the fixed resource and dynamic resource configuration of the second node; the second node receives the first node The sent first indication information, where the first indication information is used to indicate the available status of one or more dynamic resources on the first indication area of the second node, the first node is the superior node of the second node; the second node The second indication information is determined according to the first indication information and the resource configuration information. The second indication information is used to indicate the available status of resources between the second node and the third node on the second indication area. The second indication area includes At least one dynamic resource indicated by an indication information, the second indication information indicates that the status of at least one dynamic resource not indicated by the first indication information is unavailable; the second node sends the second indication information to the third node, and the third node is The subordinate node of the second node.

With reference to the first aspect, in some implementations of the first aspect, the second node determines the second indication information according to the first indication information and the resource configuration information, including: the second indication area includes fixed resources of Y second nodes, The second indication information indicates whether the availability status of Z of the Y fixed resources is available or unavailable, where Y and Z are integers greater than or equal to 0, and Z is less than or equal to Y.

With reference to the first aspect, in some implementations of the first aspect, the first indication information is used to indicate the available status of some resources of the MT of the second node on the first indication area, and the second node uses the first indication information and Before the resource configuration information determines the second indication information, the method further includes: the second node determines the available status of the dynamic resource of the DU of the second node according to the available status of some resources of the MT; or, the first indication information is used to indicate The available status of the dynamic resource of the DU of the second node in the first indication area. Before the second node determines the second indication information according to the first indication information and the resource configuration information, the method further includes: the second node according to the first indication information To determine the available status of the dynamic resource of the DU of the second node.

With reference to the first aspect, in some implementations of the first aspect, the configuration information of the first indication information includes one or more of the following information: the start time of the first indication area; the end time of the first indication area ; The duration of the first indication area; the interval between the time domain position where the first indication information is located and the start position of the first indication area; the resource identifier of the dynamic resource, the resource identifier includes symbol number, slot number, and subframe At least one of the number and the system frame number; the resource identifier of the MT resource to be indicated, and the resource identifier includes at least one of a symbol number, a time slot number, a subframe number, and a system frame number.

With reference to the first aspect, in some implementations of the first aspect, the first indication area includes the first dynamic resource, the one or more dynamic resources indicated by the first indication information includes the first dynamic resource, and the method further The method includes: the second node receives the third indication information from the first node, the third indication information indicates the available status of the first dynamic resource, the available status of the first dynamic resource indicated by the third indication information and the first indication indicated by the first indication information. The available status of the dynamic resource is different, the third indication information is located after the first indication information in the time domain; the second node determines the available status of the first dynamic resource according to the available status of the first dynamic resource indicated by the third indication information.

With reference to the first aspect, in some implementations of the first aspect, the first indication area includes a second dynamic resource, and the second node receives the second dynamic resource from the first node on the MT resource of the second node corresponding to the second dynamic resource. Four indication information, the MT resource of the second node corresponding to the second dynamic resource is configured to be always available through the protocol, or the MT resource of the second node corresponding to the second dynamic resource is passed by the first node through a different value from the fourth indication information The instructions are indicated as always available.

In a second aspect, a method for indicating resources is provided. The method includes: a second node obtains resource configuration information, and the resource configuration information is used to indicate the fixed resource and dynamic resource configuration of the second node and the third node; the second node Receive first indication information sent by a first node, where the first indication information is used to indicate the available status of one or more of the dynamic resources on the first indication area of the second node, and the first node is an upper node of the second node ; The second node determines the second indication information according to the first indication information and the resource configuration information, the second indication information is used to indicate the second indication area of the third node, the second indication area includes the first area, and the first area includes K A dynamic resource, the first area is located after the end of the first indication area, and K is a non-negative integer; the second node sends second indication information to the third node, and the third node is a subordinate node of the second node.

With reference to the second aspect, in some implementations of the second aspect, the second node determines the second indication information according to the first indication information and the resource configuration information, including: the second node determines that the first area contains The available status of the K dynamic resources of the K dynamic resources, the time domain resources of the second node corresponding to the K dynamic resources in the time domain belong to the fixed resources indicated in the resource configuration information of the second node; the second node according to the K dynamic resources The available state of the resource determines the second indication information.

With reference to the second aspect, in some implementations of the second aspect, the second node determines the second indication information according to the first indication information and the resource configuration information, including: the second node includes the first area according to the resource configuration information N of the K dynamic resources in, are determined to be unavailable, and the time domain resources of the second node corresponding to the N dynamic resources in the time domain belong to the dynamic resources indicated in the resource configuration information of the second node, N≤ K and N are non-negative integers; the second node determines the second indication information according to the available status of the K dynamic resources.

With reference to the second aspect, in some implementations of the second aspect, the first indication information is used to indicate the available status of some resources of the MT of the second node on the first indication area, and the second node uses the first indication information and Before the resource configuration information determines the second indication information, the method further includes: the second node determines the available status of the dynamic resource of the DU of the second node according to the available status of some resources of the MT; or, the first indication information is used to indicate The available status of the dynamic resource of the DU of the second node in the first indication area. Before the second node determines the second indication information according to the first indication information and the resource configuration information, the method further includes: the second node according to the first indication information To determine the available status of the dynamic resource of the DU of the second node.

With reference to the second aspect, in some implementations of the second aspect, the configuration information of the first indication information includes one or more of the following information: the start time of the first indication area; the end time of the first indication area ; The duration of the first indication area; the interval between the time domain position where the first indication information is located and the start position of the first indication area; the resource identifier of the dynamic resource, the resource identifier includes symbol number, slot number, and subframe At least one of number and system frame number.

With reference to the second aspect, in some implementations of the second aspect, the first indication area includes the first dynamic resource, the one or more dynamic resources indicated by the first indication information includes the first dynamic resource, and the method further The method includes: the second node receives third indication information from the first node, the third indication information indicates the available status of the first dynamic resource, the available status of the first dynamic resource indicated by the third indication information, and the first indication information indicated by the first indication information. The available status of the dynamic resource is different, the third indication information is located after the first indication information in the time domain; the second node determines the available status of the first dynamic resource according to the available status of the first dynamic resource indicated by the third indication information.

With reference to the second aspect, in some implementations of the second aspect, the first indication area includes a second dynamic resource, and the second node receives the first node from the first node on the MT resource of the second node corresponding to the second dynamic resource. Four indication information, the MT resource of the second node corresponding to the second dynamic resource is configured to be always available through the protocol, or the MT resource of the second node corresponding to the second dynamic resource is passed by the first node through a different value from the fourth indication information The instructions are indicated as always available.

In a third aspect, a device for indicating resources is provided, and the device has the function of implementing the methods in the first aspect or the second aspect and any possible implementation manners thereof. The function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In a fourth aspect, this application provides a network device including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the network device executes the method in the first aspect, the second aspect, or any possible implementation of the first aspect or the second aspect.

Optionally, the network device further includes a communication interface. The communication interface may be a transceiver or an input/output interface.

In a fifth aspect, the present application provides a computer-readable storage medium in which computer instructions are stored. When the computer instructions run on a computer, the computer executes the first aspect, the second aspect, or the first aspect, The method in any possible implementation of the second aspect.

In a sixth aspect, this application provides a chip including a processor. The processor is configured to read and execute a computer program stored in the memory to execute the method in the first aspect, the second aspect, or any possible implementation manner of the first aspect or the second aspect.

Optionally, the chip further includes a memory, and the memory and the processor are connected to the memory through a circuit or wire, and the memory is used to store a computer program.

Further optionally, the chip further includes a communication interface.

In a seventh aspect, the present application also provides a computer program product. The computer program product includes computer program code. When the computer program code runs on a computer, the computer executes the first and second aspects, as well as the first and second aspects. Any one of the possible implementation methods.

In an eighth aspect, the present application also provides a communication system. The system includes a first node, a second node, and a third node. The second node executes the foregoing first aspect or any one of the first possible methods, or executes the foregoing The first aspect or any one of the first possible methods.

In the technical solution provided by this application, the IAB node (ie, the second node) obtains resource configuration information of itself and its subordinate node (ie, the third node), and receives an indication from the superior node (ie, the first node) that the IAB node is The first indication information of the available state of the dynamic resource on the first indication area. When the IAB node determines that the resource that needs to be instructed by the subordinate node exceeds the instruction of its superior node, the IAB node determines how to instruct the subordinate node for the resource that exceeds the instruction of the superior node according to its own resource configuration information. Since the resource configuration of the IAB node is fixed, even if the resource that the IAB node needs to indicate to its lower-level node exceeds the instruction of the upper-level node, the IAB node can avoid the follow-up instruction of its upper-level node according to the resource configuration information Resources, so that even if instructions are given to subordinate nodes in advance, subsequent instructions will not conflict with previous instructions.

Description of the drawings

Figure 1 is an architecture diagram of an IAB system suitable for the technical solution of the present application.

Figure 2 is a schematic diagram of a specific example of the IAB system.

Figure 3 is a schematic diagram of the structure of an IAB node.

Fig. 4 is a schematic diagram of a specific example of the allocation of downlink backhaul resources in the LTE relay system.

Fig. 5 is a schematic diagram of an example of resource configuration of an IAB node.

FIG. 6 shows a schematic diagram of an example of an indication area indicating DCI.

FIG. 7 shows a schematic diagram of multiple indication DCI indicating the same indication area.

Fig. 8 is a schematic diagram of another example of resource configuration of an IAB node.

FIG. 9 shows a schematic diagram of another example of an indication area indicating DCI.

FIG. 10 shows a schematic diagram of still another example of the indication area indicating the DCI.

FIG. 11 shows a schematic diagram of an example of DCI configuration in a multi-hop IAB system.

FIG. 12 shows a schematic diagram of another example of DCI configuration in a multi-hop IAB system.

FIG. 13 shows a schematic diagram of an example of resource configuration of the X area.

FIG. 14 is a schematic flowchart of an example of a method for indicating resources.

FIG. 15 shows a schematic diagram of another example of resource configuration of the X area.

FIG. 16 is a schematic flowchart of another example of a method for indicating resources.

FIG. 17 shows a schematic diagram of another example of resource configuration of the X area.

FIG. 18 shows a schematic diagram of another example of resource configuration of the X area.

FIG. 19 shows a schematic diagram of another example of DCI configuration in a multi-hop IAB system.

FIG. 20 shows a schematic diagram of another example of DCI configuration in a multi-hop IAB system.

FIG. 21 is a schematic structural block diagram of an apparatus for indicating resources provided by this application.

Fig. 22 is a schematic structural diagram of a network device provided by the present application.

detailed description

The technical solution in this application will be described below in conjunction with the drawings.

The names of all nodes and messages in this application are only names set for the convenience of description. The names in the actual network may be different, and it should not be understood that this application limits the names of various nodes and messages. On the contrary, any name that has the same or similar function as the node or message used in this application is regarded as a method or equivalent replacement of this application, and is within the protection scope of this application, and will not be repeated hereafter.

The communication systems mentioned in the embodiments of this application include but are not limited to: narrowband-internet of things (NB-IoT) systems, wireless local access network (WLAN) systems, and long-term evolution (long term evolution, LTE) systems, fifth generation mobile networks (5th generation wireless systems, 5G) or post 5G communication systems, such as new radio (NR) systems, device to device (device to device, D2D) Communication system, etc.

Refer to FIG. 1, which is an architecture diagram of an integrated access and backhaul (IAB) system suitable for the technical solution of the present application. As shown in Figure 1, an IAB system includes at least one base station 100, and one or more terminal devices (terminal) 101 served by the base station 100, one or more relay nodes (that is, IAB nodes) 110, and IAB One or more terminal devices 111 served by the node 110. Generally, the base station 100 is called a donor next generation node B (DgNB), and the IAB node 110 is connected to the base station 100 through a wireless backhaul link 113. The donor base station is also referred to as a donor node in this application, that is, a donor node.

The base station 100 includes, but is not limited to: evolved node B (evolved node base, eNB), radio network controller (RNC), node B (node B, NB), base station controller (base station controller, BSC) , Base transceiver station (base transceiver station, BTS), home base station (home evolved NodeB, or home node B, HNB), baseband unit (baseband Unit, BBU), evolved (evolved LTE, eLTE) base station, NR base station (next generation node B, gNB) etc.

Terminal equipment includes but is not limited to: user equipment (UE), mobile station, access terminal, user unit, user station, mobile station, remote station, remote terminal, mobile equipment, terminal, wireless communication equipment, user agent, Station (ST), cell phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (wireless local loop, WLL) station in wireless local area network (wireless local access network, WLAN) Personal digital assistant (PDA), handheld devices with wireless communication functions, computing devices, other processing devices connected to wireless modems, in-vehicle devices, wearable devices, mobile stations in the future 5G network, and public Any of the terminal devices in the public land mobile network (PLMN) network. The IAB node is a specific name of a relay node, which does not limit the solution of the present application. It may be one of the aforementioned base stations or terminal devices with a forwarding function, or may be an independent device form. For example, the IAB node of the present application may also be called a relay node (RN), a transmission and reception point (transmission and reception point), a relay transmission and reception point (relaying TRP), etc.

The IAB system may also include multiple other IAB nodes, for example, the IAB node 120 and the IAB node 130. The IAB node 120 is connected to the IAB node 110 through a wireless backhaul link 123 to access the network. The IAB node 130 is connected to the IAB node 110 through a wireless backhaul link 133 to access the network. The IAB node 120 serves one or more terminal devices 121, and the IAB node 130 serves one or more terminal devices 131. In FIG. 1, both the IAB node 110 and the IAB node 120 are connected to the network through a wireless backhaul link. In this application, the wireless backhaul links are all viewed from the perspective of the relay node. For example, the wireless backhaul link 113 is the backhaul link of the IAB node 110, and the wireless backhaul link 123 is the IAB node 120. Backhaul link. As shown in Figure 1, an IAB node, such as 120, can be connected to another IAB node 110 through a wireless backhaul link, such as 123, to connect to the network. Moreover, the relay node can be connected to the network via a multi-level wireless relay node. It should be understood that the use of IAB nodes in this application is only for the purpose of description, and does not mean that the solution of this application is only used in NR scenarios. In this application, IAB nodes can generally refer to any node or device with a relay function. The use of IAB node and relay node in this application should be understood to have the same meaning.

In addition, this application also involves the following basic terms or concepts.

Access link: The link between the UE and the IAB node or IAB donor node (IAB donor). Alternatively, the access link includes a wireless link used when a node communicates with its subordinate nodes. The access link includes an uplink access link and a downlink access link. The uplink access link is also referred to as the uplink transmission of the access link, and the downlink access link is also referred to as the downlink transmission of the access link.

Backhaul link: the link between the IAB node and the IAB child node (IAB child node) or the IAB parent node (IAB parent node). The backhaul link includes the downlink transmission link with the IAB child node or the IAB parent node, and the uplink transmission link with the IAB child node or the IAB parent node. The data transmission of the IAB node to the parent node of the IAB or the uplink transmission of the child node of the IAB is called the uplink transmission of the backhaul link. The IAB node receives the data transmission of the IAB parent node, or the data transmission to the IAB child node is called the downlink transmission of the backhaul link. In order to distinguish between UE and IAB node, the backhaul link between the IAB node and the IAB parent node is also called the parent BH, and the backhaul link between the IAB node and the IAB child node It is called the lower-level backhaul link (child BH).

In some cases, the lower-level backhaul link and access link of the IAB node are collectively referred to as the access link, that is, the lower-level node is regarded as a terminal device of the upper-level node. It should be understood that in the integrated access and backhaul system shown in FIG. 1, an IAB node is connected to an upper-level node. However, in the future relay system, in order to improve the reliability of the wireless backhaul link, an IAB node, such as 120, can have multiple upper-level nodes simultaneously providing services for an IAB node. The IAB node 130 in Figure 1 also It may be connected to the IAB node 120 through the backhaul link 134, that is, both the IAB node 110 and the IAB node 120 are regarded as the upper node of the IAB node 130. The names of the IAB nodes 110, 120, and 130 do not limit the scenarios or networks where they are deployed, and may be any other names such as relay, RN, and so on. The use of the IAB node in this application is only for the convenience of description.

In Figure 1, the wireless links 102, 112, 122, 132, 113, 123, 133, 134 can be bidirectional links, including uplink and downlink transmission links. In particular, the wireless backhaul links 113, 123, 133, 134 can be used by the upper node to provide services for the lower node, such as the upper node 100 is the lower node 110 provides wireless backhaul services. It should be understood that the uplink and downlink of the backhaul link may be separated, that is, the uplink and the downlink are not transmitted through the same node. The downlink transmission refers to an upper node, such as node 100, and a lower node, such as node 110, transmitting information or data, and the uplink transmission refers to a lower node, such as node 110, and an upper node, such as node 100, transmitting information or data. The node is not limited to whether it is a network node or a terminal device. For example, in a D2D scenario, the terminal device can act as a relay node to serve other terminal devices. The wireless backhaul link can be an access link in some scenarios. For example, the backhaul link 123 can also be regarded as an access link for the node 110, and the backhaul link 113 is also the access link of the node 100. link. It should be understood that the above-mentioned upper node may be a base station or a relay node, and the lower node may be a relay node or a terminal device with a relay function. For example, in a D2D scenario, the lower node may also be a terminal device.

See Figure 2. Figure 2 is a specific example of the IAB system. In the IAB system shown in FIG. 2, it includes a donor base station, IAB node 1, IAB node 2, UE1 and UE2. Among them, the link between the donor base station and the IAB node 1 and the link between the IAB node 1 and the IAB node 2 are backhaul links. The link between UE1 and the donor base station and the link between UE2 and IAB node 1 are access links.

Refer to Figure 3, which is a schematic diagram of the structure of an IAB node. As shown in Figure 3, the mobile-termination (MT) function is defined as a component similar to the UE. In IAB, MT is called a function (or module) that resides on the IAB node. Since the MT is similar to the function of an ordinary UE, it can be considered that the IAB node accesses the upper node or network through the MT.

A distributed unit (DU) function is defined as a component similar to a base station. In IAB, DU is called a function (or module) that resides on the IAB node. Since the DU is similar to the function or part of the function of an ordinary base station, it can be considered that the IAB node can allow the access of lower-level nodes and terminal equipment through the DU.

In-band relay generally has the limitation of half-duplex. Specifically, an IAB node cannot send a downlink signal to its child node when receiving a downlink signal sent by its parent node, while an IAB node is receiving an uplink signal sent by its child node. It cannot send an uplink signal to its parent node.

The method for configuring backhaul resources in the LTE relay system is introduced below in conjunction with FIG. 4.

In the LTE relay system, the donor node semi-statically configures the backhaul resources for the relay node. Figure 4 shows a specific example of the allocation of downlink backhaul resources in the LTE relay system. In LTE, the donor node allocates backhaul link resources to the relay node in units of subframes (1ms), and the allocation period is one radio frame (10ms). Specifically, the donor node designates part of the subframes as the backhaul link subframes through radio resource control (Radio Resource Control, RRC) signaling. The number and positions of the backhaul link subframes can be reconfigured, but the reconfiguration through RRC signaling requires a longer time.

For a relay node in LTE, when a subframe is configured as a backhaul subframe, the relay node needs to monitor the relay physical downlink control channel (R-PDCCH) and/or It receives the physical downlink share channel (PDSCH), so it cannot be sent on the access link. As shown in FIG. 4, subframes 2, 4, and 6 are configured as backhaul links, and subframes 2, 4, and 6 on the access link at the corresponding positions are unavailable. Therefore, the LTE relay uses semi-static time division multiplexing (TDM) resource allocation.

The following describes the resource allocation method of the IAB system in NR.

Refer to FIG. 5, which is a schematic diagram of an example of resource configuration of an IAB node in NR. Among them, the MT resource of the IAB node can be configured into three types: downlink (downlink, D), uplink (uplink, U), and flexible (Flexible, F). These three types are also supported by existing terminal equipment, so they can be indicated by existing signaling.

The DU resource of the IAB node can be configured as downlink, uplink, flexible and unavailable (Null, N) four types. Further, the DU's downlink, uplink, and flexible resources can also be divided into hard (hard, H) resources and soft (soft, S) resources. Among them, the hard resource of the DU indicates the resource that is always available to the DU.

The soft resource of the DU indicates that whether the DU is available depends on the indication of the upper-level node (for example, the donor node).

It can be seen from the above that the resource allocation on the IAB node DU in the NR depends on the instruction of the superior node, and the instruction of the DU resource is performed through the semi-static allocation and the dynamic instruction. This resource allocation method is very different from the resource allocation method in the LTE system.

With reference to Figures 3 and 5, the MT of the IAB node is connected to the DU of the upper node, and the DU of the IAB node is connected to the MT of the lower node. After the resource configuration of the semi-static (for example, through RRC signaling), the IAB The node can obtain the resource configuration of its MT resource and DU resource respectively. For example, it may include the transmission direction (D/U/F) of the MT resource and the DU resource, the type of the DU resource (soft/hard), and the location of the NULL resource of the DU. It should be understood that the above-mentioned related configuration can be obtained through explicit signaling or implicitly. Specifically, FIG. 5 shows a schematic diagram of resource configuration of MT and DU in the case of time division multiplexing.

With reference to Figure 5 and Table 1 below, it can be seen that for an IAB node, the MT resource (e.g., the 1st, 1st, The MT resources corresponding to time slots 6, 7, and 8 are unavailable.

Specifically, combined with the previous introduction, the MT of the IAB node has three types of resources, and the DU of the IAB node has a total of 7 types of resources. After pairwise combination, the possible behaviors of the MT of the IAB node and its corresponding DU are as follows As shown in the two tables, Table 1 is the resource configuration under various possible resource type combinations of MT and DU in the time division multiplexing scenario. Table 2 shows the resource configuration under various possible resource type combinations of MT and DU in a spatial division multiplexing (SDM) scenario.

Table 1

Table 2

In Table 1 and Table 2 above, the meaning of each symbol is as follows:

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

"DU:Tx" means DU can be transmitted;

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

"DU:Rx" means that the DU can schedule the uplink transmission of the lower node;

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

"DU:Tx/Rx" means that DU can 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 receiving capabilities;

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

This application mainly considers TDM scenarios, but the solution of this application can also be extended to scenarios such as SDM, frequency-division multiplexing (FDM), or full-duplex. For the TDM scenario, the MT resource corresponding to the hard resource of the DU is unavailable. Specifically, on the unavailable resource of the MT (for example, the MT resource corresponding to time slots 1, 6, 7, and 8 in Figure 5):

(1) MT does not expect the superior node to schedule these resources;

(2) MT does not receive or send reference signals on these resources;

(3) The MT does not perform physical downlink control channel (PDCCH) monitoring on these resources, that is, if the search space overlaps these resources, the MT of the IAB node abandons the overlapped search space monitoring.

It should be understood that, in addition to the unavailable resources of the MT corresponding to the DU hard resource, the MT may also have other unavailable resources.

After the above semi-static configuration is completed, the upper-level node will continue to use dynamic signaling (for example, downlink control information (DCI)) to dynamically indicate to the IAB node the availability of soft-type resources of its DU resources, for example, the upper-level node uses The dedicated DCI or dedicated DCI field indicates the availability of the soft resources of the IAB node. For the convenience of description, the information contained in the dynamic signaling is called indication information, and the above dedicated DCI or dedicated DCI field can be collectively referred to as indicating DCI .

The above dynamic indication can be achieved in a variety of ways.

In one implementation, this can be done through explicit instructions.

For example, the superior node directly indicates the availability of the soft resource of the DU resource of the IAB node. In addition, it can also indicate the transmission of some (for example, F type) soft resources (for example, the DU resources corresponding to the 4th and 5th time slots in Fig. 5). Direction etc.

In another implementation, it can be done through implicit instructions.

For example, the upper-level node indicates whether the MT resource of the IAB node (for example, the available resource of the MT) is released (or whether it is available), and the IAB node determines the soft type resource of its DU resource according to the indication of the upper-level node for the above-mentioned MT resource. Availability.

Since the indication information of the upper-level node is directly received by the MT of the IAB node, this application focuses on implicit indication methods. Specifically, the MT resource of the IAB node can be released or not released (in other words, the MT resource is available or unavailable), and the IAB node determines the soft type of the corresponding DU resource according to the result of the upper-level node's indication of the MT resource Availability of resources. Like the UE, the MT resource of the IAB node can be configured into three types: uplink, downlink and flexible. The release of an MT resource of the IAB node by the superior node indicates that the superior node does not communicate with the IAB node on this resource, and the failure of the superior node to release an MT resource of the IAB node indicates that the superior node may communicate with the IAB node on this resource. In a possible implementation, the IAB node regards the released MT resources as unavailable MT resources.

Regardless of whether explicit indication or implicit indication is used, dynamic indication signaling can achieve the following two purposes: (1) the IAB node can determine the availability of its DU soft resources; (2) the IAB node can determine whether its MT resources are released, or determine Availability of MT resources.

For ease of presentation and understanding, this application may describe the behavior of indicating information (for example, indicating DCI) by describing the release or non-release of MT resources. It should be noted, however, that the technical solution provided in this application can also be applied to explicit indications, that is, in a TDM scenario, releasing MT resources can be equivalent to indicating that the soft type resources of the corresponding DU resources are available, and the MT may not be released. The resource is equivalent to indicating that the soft resource of the corresponding DU resource is unavailable.

It should be noted that implicit indications can be applied to both TDM scenarios and SDM (or FDM) scenarios, that is, for SDM (or FDM) scenarios, the IAB node can still indicate its MT resource according to the superior node to determine its DU soft resource Availability. However, the correspondence between the explicit resource indication (indicating DU resources) and the implicit resource indication (indicating MT resources) may be different in different multiplexing scenarios. For example, for the TDM scenario, MT and DU cannot be transmitted at the same time, so the DU resource corresponding to the available resource of the MT must be unavailable, and vice versa; for the SDM scenario, MT and DU can be received or sent at the same time, so MT The DU resource corresponding to the available resource of may be unavailable (when the transmission directions of the MT and DU resources are both downlink or uplink), or may be available (when the transmission directions of the MT and DU resources are opposite).

FIG. 5 also shows a method of implicitly indicating the availability of soft resources of the DU by indicating DCI.

In FIG. 5, the IAB node receives the instruction DCI from the upper-level node, and more specifically, the MT of the IAB node receives the instruction DCI sent by the upper-level node. Among them, since the DU resource type of the 0th time slot is NULL, the corresponding MT resource of the 0th time slot is an available resource, and the MT of the IAB node can receive the indication DCI sent by the upper node through this time slot.

The indication DCI can indicate whether to release one or more MT resources. After receiving the indication DCI, the IAB node can determine whether the soft resources of the corresponding DU are available through whether the one or more MT resources are released.

For example, the indication DCI can indicate whether the MT resources of the second, third, fourth, fifth, and ninth time slots are released (corresponding to the arrow between the upper node DU and the IAB node MT in Figure 5, where the solid line indicates not to release Corresponding MT resources, the dotted line indicates the release of the corresponding MT resources), to indirectly indicate whether the soft resources of the DUs in the second, third, fourth, fifth, and ninth time slots are available (corresponding between the IAB node DU and the subordinate node MT in Figure 5 Arrow, where the dashed line means unavailable and the solid line means usable).

Specifically, the indication DCI may indicate not to release the MT resources of time slots 2, 4, and 9 (corresponding to the dashed arrow in Figure 5), then the soft resources of the corresponding DU are unavailable, that is, the DU cannot be Transmission is performed on the time slot.

The indication DCI can indicate the release of the MT resources of the 3rd and 5th time slots, and the soft resources of the corresponding DU are available, that is, the DU can be transmitted on the aforementioned time slots.

According to whether the MT resource is released, the signal transmission behavior of the IAB node MT is given:

(1) When the upper-level node (indicating DCI) indicates that a certain MT resource is released, the MT of the IAB node thinks that the upper-level node will not schedule the PDSCH on this resource, and the physical uplink share channel (PUSCH). In other words, when the IAB node is scheduled for PUSCH transmission or PDSCH transmission, the transmission will not be located in the released MT resource;

(2) When the upper-level node (indicating DCI) indicates that a certain MT resource is released, the MT of the IAB node will not perform PDCCH monitoring, signal state information reference signal (channel state information-reference signal, CSI-RS) on this resource Reception, sounding reference signal (SRS) transmission, physical uplink control channel (PUCCH) transmission, etc., that is, the IAB node does not perform high-level configuration transmission on the released MT resources;

(3) When an upper-level node indicates that a certain MT resource is not released or scheduled (including scheduling for downlink transmission or uplink transmission), the MT of the IAB node can perform PDCCH monitoring, CSI reception, SRS transmission, PUCCH transmission, etc. on this resource, In other words, the IAB node can perform high-level configuration transmissions on MT resources that have not been released or scheduled;

(4) When the superior node indicates that a certain MT resource is not released or scheduled, the MT of the IAB node thinks that the superior node may perform PDSCH scheduling or PUSCH scheduling on this resource. It can be understood that in practical applications, the upper-level node may not schedule the IAB node MT on this resource;

(5) When the MT's PUCCH or PUSCH used for hybrid automatic repeat request-ack (HARQ-ACK) feedback is configured or dynamically indicated in an MT resource, the IAB node does not expect this resource to be indicated DCI released.

It should be understood that the various behaviors of the MT described above are only examples, which do not constitute a limitation on the behavior of the MT in this application.

Correspondingly, the signal transmission behavior of the IAB node DU includes:

(1) When the MT resource corresponding to a DU resource is indicated to be released, the IAB node can perform dynamic scheduling such as PDSCH and PUSCH on this resource;

(2) For TDM, when the MT resource corresponding to a DU resource is indicated as not being released or unscheduled, the IAB node does not perform dynamic scheduling such as PDSCH and PUSCH on this resource; for SDM, when the MT corresponding to a DU resource After the resource is instructed not to be released or scheduled, the IAB node will not perform dynamic scheduling such as PDSCH and PUSCH that violates the half-duplex constraint on this resource;

(3) After the MT resource corresponding to a DU resource is instructed to be released, the IAB node can send and receive semi-static configuration signals such as reference signals on this resource;

(4) For TDM, when the MT resource corresponding to a DU resource is indicated as not being released or unscheduled, the IAB node does not send and receive semi-static configuration signals such as reference signals on this resource. For TDM, when the MT resource corresponding to a DU resource is instructed not to be released or scheduled, the IAB node does not transmit and receive semi-static configuration signals such as reference signals that violate the half-duplex constraint on this resource.

Here, the half-duplex constraint means that when the MT of the IAB node is in the transmitting state, the DU cannot be in the receiving state; and when the MT is in the receiving state, the DU cannot be in the transmitting state.

It should be understood that in addition to the dynamic indication signaling, the IAB node may also need other configuration information to determine the availability of its DU resources. For example, when a DU resource is semi-statically configured as unavailable, even if the dynamic signaling changes its corresponding The MT resource is released, and the IAB node cannot use this resource to communicate with subordinate nodes.

It should be understood that the various behaviors of the DU described above are only examples, which do not constitute a limitation on the behavior of the DU in this application.

Optionally, consider semi-static configuration signals such as UE-oriented reference signals. If the UE is configured with a slot format indicator (SFI) to indicate the reception of DCI (that is, DCI format 2-0), and the signal is The flexible (F) resource configured in the UE, the corresponding IAB node DU resource can be a soft resource; if the UE is configured with SFI to indicate the reception of DCI (that is, DCI format 2-0), but the signal is not configured in The flexible (F) resource of the UE, the corresponding IAB node DU resource can only be a hard resource; if the UE is not configured with SFI to indicate the reception of DCI (that is, DCI format 2-0), then the resource configured for the signal The corresponding IAB node DU resource can only be a hard resource. Under the above constraints, the IAB node can always receive or send the signal, or even if the IAB node cannot receive or send the signal, the IAB node DU can instruct the DCI to turn off the signal for the UE through the SFI.

Optionally, when the donor node or the superior node configures the DCI, it should ensure that the IAB node can use the DU resource corresponding to the released MT resource. For downlink transmission, the IAB node DU should have sufficient time to prepare and send PDCCH and PDSCH, and for uplink transmission, the IAB node DU should have sufficient time to prepare and send PDCCH, and the subordinate node or UE of the IAB node should have sufficient time Prepare and send PUSCH. Before the MT of the IAB node receives the indicating DCI, it needs to first receive the configuration information indicating the DCI. For example, the upper-level node can configure the MT through RRC signaling. As an example, the RRC configuration indicating DCI provided in this application may include one or more of the following:

(1) Transmission of control channel resource set information (control resource set, CORESET) and search space set information (search space set) of the PDCCH indicating DCI;

(2) Indicate the MT resource set or DU resource set indicated by the DCI, including the duration of the indicated resource, the start position of the indicated resource, the end position of the indicated resource, the identifier of the indicated resource, etc.;

(3) The transmission direction of some DU resources, that is, the uplink/downlink/flexible configuration of the DU;

(4) The transmission direction of some MT resources, that is, the uplink/downlink/flexible configuration of MT;

(5) The TCI status of some MT resources, that is, the MT receives PDCCH and/or PDSCH beam information, or spatial quasi co-located (QCL) information.

The following describes in detail the design details of indicating the configuration of the DCI provided in this application in conjunction with specific embodiments.

The indication DCI may indicate the availability of one or more resources within a certain time domain range (or time domain area, time domain resource), and the time domain range indicated by the indication DCI is referred to as an indication area in this application. The duration of the indication area can be defined by the protocol or configured by the network.

In one embodiment, the duration of the indication area can be directly configured by the upper-level node or the donor node.

For example, the upper-level node or the donor node may configure the duration of the indication area as n times the time division duplex (TDD) configuration period P, where n is an integer greater than or equal to 1. For another example, the length of the indication area may be equal to the period of the indication DCI transmission. Alternatively, the length of the indication area may be equal to the period of the search space corresponding to the indication DCI.

In addition, it should be understood that the TDD configuration period may be composed of two spliced periods (denoted as P1 and P2), and the length of the indication area may be n times the sum of the two periods, and n is an integer greater than or equal to 1.

FIG. 6 shows an example of an indication area indicating DCI. Referring to Figure 6, the indication area may include a start time (or start time domain position) and an end time (or end time domain position). For example, the start time and end time of the indication area may be directly identified by the resource. It means that the resource identifier (or resource number) can be any one or more of symbol number, time slot number, subframe number, system frame number, etc. It is easy to understand that the indicator area usually contains its own start time and end time.

Alternatively, the start time of the indication area may also be determined indirectly by the interval between the time domain resource location where the DCI is indicated and the start time of the indication area, and this interval may be referred to as an indication delay. It should be noted that the indication delay may also be described in other ways. For example, the indication delay may also be indirectly determined by the interval between the time domain resource location where the indication DCI is located and the start time of the indication area. It should be understood that the indication delay may be configured by an upper-level node (for example, a donor node) through semi-static signaling, or may be dynamically indicated by an upper-level node through dynamic signaling, or may be defined by a protocol. The semi-static signaling may be RRC signaling, for example. The dynamic signaling may be, for example, a MAC control element (MAC CE) or DCI.

It should be understood that if the indication delay is defined by the protocol, the start time of the indication area is optional, and the start time of the indication area can be inferred by indicating the time domain resource where the DCI is located and the size of the indication delay.

As a possible implementation, the indication delay can be 0, that is, the interval between the time domain resource location where the DCI is located and the start time of the indication area is 0, or in other words, the time domain resource location and the indication area where the DCI is located The start time coincides. Similarly, the end time of the indicated area can be determined by the start time of the indicated area and the duration of the indicated area.

In general, the time domain resource indicating the DCI is one or more (for example, three) symbols, and the time domain resource position indicating the DCI can be indicated by the time domain position of the symbol occupied by the DCI or the symbol among the symbols occupied by the DCI. The time domain position of a part of symbols (for example, the first symbol or the last symbol) is expressed.

Similarly, the indication area can also be determined by the start time and end time of the indication area.

In FIG. 6, the IAB node receives the indication DCI on the available resources of the MT, and determines the availability of one or more resources in the indication area, which is a continuous time domain resource.

As an embodiment, the indication area indicating the DCI may also be discrete. For example, the indication area may be composed of multiple disconnected time domain resources, which is not limited in this application.

Optionally, in order to ensure the robustness of the IAB node in receiving the indication DCI, the same indication area may be indicated by multiple indication DCIs. Refer to FIG. 7, which shows a schematic diagram of multiple indication DCIs indicating the same indication area. In Fig. 7, the network side uses two or more identical indication DCIs (for example, indication DCI#1 and indication DCI#2 in Fig. 7) to indicate the same indication area at the same time, and the above two indication DCIs can pass different Time domain resources are received. Wherein, multiple indication DCIs refer to at least two indication DCIs, or greater than or equal to two indication DCIs.

Optionally, multiple DCI indications can be transmitted using different beams, that is, multiple PDCCH indications that indicate DCI are located at different CORESETs, or multiple PDCCH indications that indicate DCI are transmitted with demodulation reference signals (DMRS). Different spatial QCL relationships.

It should be understood that each indication DCI has its corresponding indication delay. Two indication DCIs received through different time domain resources indicate the same indication area, and the indication delay of each indication DCI may be different. For example, the indication time delays indicating DCI#1 and indicating DCI#2 in FIG. 7 are different.

Optionally, the indication DCI may not indicate all resources in the indication area.

For example, the indication DCI may not indicate the MT resource corresponding to the hard resource of the DU. As a specific example, when a continuous period of time domain resources (for example, one time slot) of the IAB node DU does not include any soft resources (for example, symbols), the indicating DCI may not indicate the corresponding MT resources.

Optionally, the indication DCI may indicate the MT resource corresponding to the hard resource of the DU, but it always indicates the release of the MT resource corresponding to the hard resource of the DU.

Optionally, when the upper-level node configures the indicated DCI, it may configure the indicated resource identifier of the indicated DCI. The indicator resource identifier indicating the DCI may be any one or more of symbol numbers, slot numbers, subframe numbers, system frame numbers, and so on. Wherein, the indicated resource indicates the MT or DU resource indicated by the indicated DCI.

In a possible implementation, the IAB node determines the hard/soft type of its DU resource according to the configuration of the indicated resource, and the determination rules are shown in Table 1 and Table 2 above. Specifically, the IAB node regards the MT resources other than the indicated resources configured for the DCI as "Null" resources, and infers the type (hard or soft) of the DU resource according to the multiplexing type (TDM, SDM or FDM).

Optionally, when all symbols in one DU resource (for example, one time slot) of the IAB node are of the hard type, the indication resource identifier indicating the DCI does not include the DU resource or the number of the MT resource corresponding to the DU resource.

Optionally, when all symbols in one MT resource (for example, a time slot) of the IAB node are unavailable symbols, the indication resource identifier indicating the DCI does not include the number of the MT resource (for example, the number of the time slot is not included) .

Optionally, the MT resources corresponding to the soft resources of some DUs in the indication area may not be indicated by the indication DCI. In other words, the indicator resource identifier indicating the DCI may not include the number of the MT resource corresponding to the soft resource of this part of the DU. At this time, the DU of the IAB node can use the soft resources of this part of the DU. In a possible implementation, the DU of the IAB node can only use this part of the resources for dynamic transmission, and cannot configure the transmission of periodic or semi-persistent signals.

The two important concepts of this application, dynamic resources and fixed resources, are described in detail below in conjunction with FIG. 8.

Refer to the foregoing description, the DU resources of the IAB node include hard resources and soft resources. Among them, the upper-level node may indicate the available status of some or all of the soft resources to the IAB node. On this basis, the set of soft resources that are indicated (for example, through explicit indication or implicit indication) in this part of the indication area (the available state of the resource may change) can be called a dynamic resource. The collection of hard resources in the indicated area and soft resources that are not indicated (the available state of the resources will not change) can be called fixed resources.

It can be seen that if the superior node instructs all soft resources of the IAB node, the fixed resources of the IAB node only include hard resources. If the upper-level node only indicates the available status of a part of the soft resources of the IAB node, the fixed resources of the IAB node include all hard resources and soft resources that will not be indicated by the upper-level node. It should be understood that the indication of all soft resources of the IAB node by the upper-level node may be an explicit indication or an implicit indication. The specific indication method is not restricted in this application, and the implicit indication is as described above and will not be repeated.

Fig. 8 is a schematic diagram of another example of resource configuration of an IAB node. In Figure 8, the MT of the IAB node receives the indication DCI in the 0th time slot. The start position of the indication area indicating the DCI is the first time slot and the end position is the 9th time slot. Therefore, the duration of the indication area is 9 time slots. In addition, since the interval between the end position and the start position of the time domain resource indicating the DCI is 0, the indicating delay is also 0 time slots.

Optionally, the time slot number in the figure may also be a symbol number, a subframe number, a system frame number, and other indicator resource identifiers, which are not limited in this application.

In the indicator area, the second, third, fourth, fifth, and ninth time slots are the soft resources of the DU, and the first, sixth, seventh, and eighth time slots are the hard resources of the DU, that is, there are a total of Contains 5 soft resources and 4 hard resources.

For example, the DCI indicated by the superior node can indicate the availability of all soft resources (that is, indicate the second, third, fourth, fifth, and ninth time slots), and the dynamic resources of the IAB node include the second, third, and fourth time slots. , 5, and 9 time slots, the fixed resources of the IAB node include the 1, 6, 7, and 8 time slots.

For another example, the instruction DCI of the superior node may only indicate the availability of part of the soft resources (for example, the second, fourth, and fifth time slots in Figure 8), and the dynamic resources of the IAB node include the second, fourth, and fifth time slots , The fixed resources of the IAB node include 1, 6, 7, and 8 time slots and the 3rd and 9th time slots that will not be indicated by the superior node.

In the following, in conjunction with the accompanying drawings, continue to introduce the relevant content of the DCI configuration instruction of this application.

FIG. 9 shows another example of an indication area indicating DCI.

In FIG. 9, consider the case where the indication areas indicated by multiple indication DCI overlap. Among them, there are three indication areas, namely indication area #0, indication area #1 and indication area #2. Indication area #0 is an indication of DCI that is not shown in Figure 9 before indication area #0. area. Indication area #1 and indication area #2 are indication areas indicating DCI#1 and DCI#2, respectively. There is an overlapping area between the indication area #1 and the indication area #2.

For dynamic resources in the overlapping area (for example, the resources indicated by both DCI#1 and DCI#2 in Figure 9), the communication protocol can be subject to additional restrictions. For example, the communication protocol can be in accordance with any of the following Way to stipulate:

(1) The protocol may stipulate that the results of multiple indication DCI indications should be the same.

For example, multiple indication DCIs may indicate that the dynamic resource is available at the same time or indicate that the dynamic resource is not available at the same time. As a more specific example, in FIG. 9, the indication DCI#1 and the indication DCI#2 may simultaneously indicate that the first dynamic resource in the overlapping area is available or that the first dynamic resource is unavailable at the same time in an implicit manner.

(2) In the case where the results of multiple indications of the DCI indication are not the same, the protocol may specify that subsequent (or later in the time domain) indication can override the result of the previous indication.

Specifically, when multiple indicating DCIs have different results indicating that a certain dynamic resource is available or unavailable, the protocol may specify that the indicating result of the DCI that is located later in the time domain covers the indicating result of the DCI that is the first in the time domain. For example, in FIG. 9, the indication DCI#1 and the indication DCI#2 can indicate the first dynamic resource in the overlapping area at the same time, and the indication DCI#1 and the indication DCI#2 have different results for indicating the first dynamic resource. At this time, the IAB node may use the indication result indicating DCI#2 that is later in the time domain as a basis for determining the available status of the first dynamic resource.

In addition, for the above coverage indication method, the protocol may also make additional restrictions. For example, the subsequent indication DCI can only indicate that the resource previously indicated by the DCI indicated as DU unavailable is indicated as DU available, but cannot indicate the resource previously indicated as DU available. Indicates that DU is not available.

For example, if the indication DCI#1 indicates that the first dynamic resource is unavailable, the subsequent indication DCI#2 may indicate that the first dynamic resource is available.

For another example, if the indication DCI#1 indicates that the first dynamic resource is available, the subsequent indication DCI#2 should not indicate that the first dynamic resource is unavailable.

In other words, for implicit indications, subsequent DCI indications can only release resources that were not released by DCI previously indicated (this resource is actually the MT resource corresponding to the dynamic resource in the time domain), but cannot release the MT resources previously indicated DCI. Instructed again not to release.

In another possible implementation, the MT available resource set of the IAB node is the union of the MT available resource sets indicated by the multiple indicator DCI. For example, within an indication range, DCI#1 indicates that the MT resource of the first time slot is not released (available), and DCI#2 indicates that the MT resource of the second time slot is not released (available). Then the final set of available MT resources is the first and second time slots. The IAB node should infer the availability of its DU soft resources based on this union.

FIG. 10 shows another example of an indication area indicating DCI.

In Figure 10, the indication area indicating DCI#1 contains the second dynamic resource, and the IAB node receives the indication DCI#2 from the upper node through the MT resource corresponding to the second dynamic resource (that is, the indication area contains another indication DCI resources), the communication protocol can stipulate that the MT resource corresponding to the second dynamic resource is always available. For TDM scenarios, the second dynamic resource can be configured as the DU's Null.

Optionally, it may also be configured by an upper-level node or donor node through semi-static signaling (for example, RRC signaling), or may be dynamically indicated by an upper-level node through dynamic signaling (for example, MAC CE or DCI). The MT resource corresponding to the resource is always available (that is, the second dynamic resource is configured or indicated as always unavailable).

Alternatively, the protocol may specify that the resource (specifically, MT resource) where the DCI is indicated will never be indicated as unavailable (or released) by another DCI, that is, the dynamic resource corresponding to the MT resource where the DCI is indicated It will never be indicated as available by another indication DCI.

Or, regardless of the result of indicating the DCI, the MT of the IAB node always detects the search space corresponding to another indicating DCI.

Optionally, for a situation where multiple indicator DCIs indicate a common indicator area (for example, the embodiment shown in FIG. 7), the protocol may specify that the resource where at least one of the multiple indicator DCIs is located (specifically, refers to MT Resource) will never be indicated as unavailable (or released) by another indication DCI, that is, at least one dynamic resource corresponding to the MT resource where the indication DCI is located will never be indicated as available by another indication DCI.

In a possible implementation manner, the location of the indication DCI (for example, determined by the search space set configuration) and its corresponding indication area information (at least two of the indication area start time information, duration information, and end time information) Among them, some of the information may be obtained implicitly) can be configured by different signaling (such as different RRC). At this time, the IAB node needs to determine the association relationship between the indicated DCI and the indicated area, that is, determine each indicated DCI The indicated indication area, or determine which indication DCI indicates an indication area. At this time, it can be determined as follows:

The interval between the time domain resource where each indication DCI is located and the start time of the corresponding indication area (that is, the indication delay) can be within a certain time domain. For example, the indication delay can be between the first threshold and the second threshold. Therefore, the indication area indicated by the DCI can be determined by the position of the indication DCI and the above threshold information. Further, if there are multiple indication areas that meet the conditions, the one that is closest to the position of the indication DCI (or the one with the earliest start time) among the multiple indication areas can be determined as the indication to be indicated. area.

In addition, additional signaling can also be used to indicate the association relationship between multiple indicator DCIs and multiple indicator areas. The IAB node can obtain the additional signaling from the superior node, and determine each indicator DCI according to the additional signaling. The corresponding indication area.

The following describes the configuration of the indicated DCI in the multi-hop IAB system.

Figure 11 shows an example of DCI configuration in a multi-hop IAB system.

Figure 11 includes three nodes. The first node can be a donor node or an IAB node. The second and third nodes are IAB nodes. Each node can include one or more lower-level nodes, and the upper-level node The indication information (for example, indication DCI) dynamically indicates resources for the lower-level nodes, and the lower-level nodes can perform dynamic resource indications for the lower-level nodes. In a possible implementation, the IAB node may have multiple upper-level nodes.

Specifically, taking the second node as an example, the second node (MT) receives the indication DCI sent by the first node (DU) (bar C in FIG. 11 indicates the time domain resource where the DCI is located), and the second node MT will detect the indicated DCI at a specific time domain position according to the configuration of the search space set. After receiving the indicated DCI, the second node will generate a new indicated DCI according to the content of the received indicated DCI, and will Instruct the DCI to send to the third node. It should be understood that the second node may include multiple lower-level nodes, so the second node may send multiple new indicating DCIs, and the content of the multiple new indicating DCIs may be the same or different.

For ease of presentation and understanding, in this application, the indication DCI received by each node (MT) from the upper node is called the first indication DCI, and the indication DCI sent to the lower node is called the second indication. DCI.

In addition, the area indicated by the first indication DCI is referred to as the first indication area, and the area indicated by the second indication DCI is referred to as the second indication area.

When the third node is a subordinate node of the second node, the first indication DCI received by the third node (MT) is the second indication DCI sent by the second node.

In a possible implementation, when the third node is configured to monitor the first indication DCI, and this DCI is sent by the second node, the semi-static signal between the second node and the third node may be configured in the first On the dynamic resources of the two nodes, the semi-static signals include reference signals such as CSI-RS and SRS, and semi-static PDSCH, PUSCH, that is, physical channels such as PUCCH. In this case, when the dynamic resource configured with the semi-static signal of the second node is indicated as unavailable by the superior node, the second node may close the communication with the third node on the dynamic resource through the second instruction DCI.

As an embodiment, when part of the resources to be indicated in a second indication area overlaps with part of the resources to be indicated in one or more first indication areas in the time domain, it is said that the corresponding one or more second indication DCIs Depend on the corresponding one or more first indication DCI, or call this one or more first indication DCI and this one or more second indication DCI have an association relationship.

In a possible implementation, the following manner is used to define the first indication DCI and the second indication DCI having an association relationship.

While satisfying the aforementioned requirement of overlapping indication of the first indication DCI and the second indication DCI in the time domain, the first indication area and the second indication area should also meet the following requirements:

(1) The starting position of the second indication area is not ahead of the first indication area;

(2) The second indication area is the first second indication area that meets the condition (1).

When the first indication area and the second indication area meet the above two conditions, they are said to be indication areas having an association relationship.

It should be noted that in this application, when discussing the relationship between the first indicator DCI and the second indicator DCI, the first indicator DCI and the second indicator DCI having an association relationship are generally discussed.

Similarly, in the present application, when discussing the relationship between the first indicator area and the second indicator area, the first indicator area and the second indicator area having an associated relationship are generally discussed.

It should be understood that when a second indication DCI has an association relationship with a first indication DCI, the indication of the second indication DCI to a part of the resources may need to be determined according to the first indication DCI.

It is understandable that the IAB node needs a certain processing delay from receiving the first indication DCI to sending the second indication DCI. The processing delay includes the detection and decoding delay of the first indication DCI by the MT, and the interaction between the MT and the DU. And processing time delay, and the preparation time for the DU to send the second indication DCI, etc. In this application, the processing delay required for the IAB node to receive the first indication DCI from the superior node to send the second indication DCI to the subordinate node is called the first delay.

Specifically, the first time delay may be defined by a communication protocol, or may be reported by the IAB node.

As an embodiment, the first time delay may be represented by the number of time slots and/or the number of symbols under a certain subcarrier interval. E.g. When the sub-carrier spacing is 120KHz, the first time delay is 28 symbols at most.

Optionally, when the indicating DCI is configured, the interval between the first indicating DCI and the second indicating DCI having an association relationship should be greater than or equal to the first time delay. For example, as shown in FIG. 11, the interval between the first indication DCI and the second indication DCI may be equal to the first delay, that is, the interval may be the processing delay.

In addition, for the case where multiple indicator DCIs correspond to the same indicator area, multiple first indicator DCIs and multiple second indicator DCIs having an association relationship can be obtained. At this time, it can be configured that the interval between the last first indication DCI and the first second indication DCI should be greater than or equal to the first delay. Alternatively, the interval between at least one first indication DCI and one second indication DCI may be configured to be greater than or equal to the first time delay.

It should be understood that the above setting is only for ease of expression and ease of understanding, and is not a limitation to the technical solution of the present application. Those skilled in the art should know that the above related information can also appear in other forms.

Since the second indication DCI of each node is determined according to the first indication DCI, usually the end time of the second indication area indicated by the second indication DCI and the end time of the first indication area indicated by the first indication DCI are within The time domain completely overlaps. Optionally, the start time of the second indication area and the first indication area may also overlap in the time domain.

In order to meet the above conditions, the indication range for the lowest-level node should be determined first. Specifically, in Figure 11, the indication range of the first indication DCI of the third node (that is, the second indication DCI of the second node) should be determined first, and then the first indication DCI of the second node (that is, the first node’s The second indicates the indication range of DCI). In FIG. 11, since the first node is the uppermost node or the donor node, there is no first indication DCI, and the third node is the lowermost node, so there is no second indication DCI.

In addition, in order to save the overhead of indicating DCI, the indicating range of indicating DCI in FIG. 11 is equal to the period of indicating DCI.

However, in the above process of determining the indication range, there will be a problem of delayed delivery. Specifically, in FIG. 11, the indication delay corresponding to the first indication DCI is indication delay #1, and the indication delay corresponding to the second indication DCI is indication delay #2. Under the condition that the time and the end time of the second indication area completely coincide in the time domain, the length of indication delay #1 will be equal to indication delay #2 plus the time domain resources and processing where the second indication DCI is located. The length of the delay.

Furthermore, only three IAB nodes are shown in FIG. 11. In fact, there may be more levels of IAB nodes in a multi-hop IAB system (for example, it may also include a fourth node, a fifth node, etc.). At this time, due to delay accumulation, the first indication DCI of the upstream node may have a larger indication delay, which causes the dynamic indication to the upstream node (for example, the second node) to be not timely enough, making the effect of the dynamic indication unsatisfactory.

In addition, there is another problem. When a new lower-level node joins, all nodes may need to reconfigure the indication range and/or indication delay of the indication DCI.

In order to solve the foregoing problem, the embodiment of the present application provides another example of DCI configuration in a multi-hop IAB system, which does not cause problems such as delayed delivery.

Fig. 12 shows another example of DCI configuration in a multi-hop IAB system.

In FIG. 12, the second node may periodically receive the first indication DCI sent by the first node, and periodically send the second indication DCI to the third node, and the second node may receive the first indication DCI and send the second indication. The period of DCI can be the same.

In FIG. 12, the indication delay #1 and the indication delay #2 corresponding to the first indication DCI and the second indication DCI are equal, and the duration of the first indication area and the second indication area are also the same.

However, it should be noted that the indicated time delay #1 and the indicated time delay #2 can be independently configured or acquired, and the indicated time delay #1 and the indicated time delay #2 may have different values. In addition, the first indication area and the second indication area can also be independently configured or acquired, and the two can have different values.

As a possible implementation manner, the durations of the indication delay #1 and the indication delay #2 corresponding to the first indication DCI and the second indication DCI are both greater than or equal to the first delay. In FIG. 12, in order to save the overhead of indicating DCI, the indicating range of indicating DCI is equal to the period of indicating DCI. Specifically, the start time of the first indication area of the first indication DCI coincides with the start time of the time domain resource where the second indication DCI is located, and continues until the start time of the first indication area of the DCI in the next cycle, or , Continues until the start time of the time domain resource where the DCI is located at the second indication of the next cycle. However, it should be noted that this application does not limit the relationship between the indication range of the DCI and the cycle of the DCI.

In the embodiment shown in FIG. 12, since the indication delays of the first indication DCI and the second indication DCI are independently configured, that is, the value of the indication delay #1 does not depend on the value of the indication delay #2, so it does not There is a problem of delayed delivery. However, the first indication area and the second indication area in FIG. 12 do not completely overlap in the time domain.

Specifically, according to FIG. 12, it can be seen that the end time of the second indication area is after the end time of the first indication area. At this time, the second indication area can be divided into two parts, as shown in FIG. 12, the two parts are respectively an S area and an X area. The start time of the S area is also the start time of the second indication area, and the end time of the S area overlaps with the end time of the first indication area in the time domain. The start time of the X area coincides with the end time of the S area (or the start time of the X area coincides with the end time of the first indicator area in the time domain), and the end time of the X area is also the end time of the second indicator area. End Time.

When the second node indicates the resource to the subordinate node, since the end time of the second indicator area is after the end time of the first indicator area, this also means that the time domain area (that is, X) is located after the end time of the first indicator area. Area), the first node has not yet performed a resource indication to the second node, and the second node needs to perform a resource indication to the third node.

According to the first indication DCI received from the first node, the second node can only determine the available status of the dynamic resources on the S area of the second indication area, but cannot know the available status of the dynamic resources on the X area. If the second node decides the resource configuration of its DU before obtaining the MT resource configuration of the X area from the first node, and indicates the resource to the third node, there may be conflicts with the first node's subsequent resource indication for the X area problem.

The resource configuration of the X area and the cause of resource indication conflict will be further explained below.

Specifically, considering the situation of implicit indication, the MT resources of the K third nodes in the X area need to be indicated by the second indication DCI of the second node, where K is a non-negative integer.

The K MT resources correspond to the K DU resources of the third node, and the corresponding DU resources may include dynamic resources, fixed resources, and unavailable resources. Wherein, the availability of the dynamic resource of the third node needs to be determined by the second indication DCI sent by the second node.

It should be understood that the K MT resources also correspond to the K DU resources of the second node, and the corresponding DU resources may include dynamic resources, fixed resources, and unavailable resources. Wherein, the availability of dynamic resources of the second node needs to be determined by the first indication DCI received by the second node.

It should be understood that the K value may be 0, that is, the indicated MT resource does not exist in the third node in the X area.

Figure 13 shows a schematic diagram of the resource configuration of the X area. Figure 13 assumes a TDM scenario.

In Figure 13, the DU of the third node includes a total of 4 soft resources. Among them, the available status of the soft resources corresponding to the first, second, and fifth time slots is indicated by the second node, that is, in the X area, a total of It includes three dynamic resources (that is, the K value is 3), that is, the availability of the MT resources including three third nodes in the X area needs to be indicated by the second indication DCI sent by the second node. In addition, the X area also includes three fixed resources, which are hard resources corresponding to time slots 0 and 4, and soft resources that are not indicated in time slot 3.

Because in area X, the second node first indicates the resources of the third node, and the first node does not know the content of the instructions of the second node at this time, so there may be conflicts with the first node's subsequent resource instructions to the X area The problem. For example, if the second node first indicates that the MT resource corresponding to the second time slot of the third node is not to be released, the DU of the third node will not communicate with the subordinate node in the second time slot, and the MT of the third node may Send a signal to the second node DU in the second time slot or receive a signal sent by the second node DU, and then if the first node instructs the second node that the MT resource corresponding to the second time slot is not released, under the TDM assumption, The DU of the second node cannot communicate with the third node in the second time slot, that is, a resource indication conflict occurs. The resource indication conflict may cause the following consequences: (1) the communication failure between the third node MT and the second node DU; (2) the signal sent by the third node MT may cause unnecessary interference; (3) third The DU resources of the node are wasted.

To this end, the present application provides a method 200 for indicating resources, which can avoid the occurrence of the foregoing resource indication conflicts.

Specifically, FIG. 14 is a schematic flowchart of a method 200 for indicating resources according to the present application. The method 200 includes steps 210-240. The method 200 will be described below with reference to FIGS. 12-15.

In the method 200, the first node is an upper-level node of the second node, and the third node is a lower-level node of the second node, which will not be repeated here.

In step 210, the second node obtains resource configuration information, and the resource configuration information is used to indicate the configuration of fixed resources and dynamic resources of the second node.

Specifically, referring to the foregoing description, the fixed resources of the second node include hard resources and soft resources that will not be indicated as available by the superior node (ie, the first node), while the dynamic resources of the second node include the available resources indicated by the superior node. State soft resources.

In a possible implementation, the fixed resource and dynamic resource configuration of the second node is inferred from the resource configuration of the MT of the second node, that is, the fixed resource and dynamic resource of the second node are implicitly configured.

That is, according to the resource configuration information, the second node can determine which soft resources of the second node will be indicated by the superior node.

As a possible implementation manner, the second node may obtain resource configuration information from the first node.

In addition, the resource configuration information may also include other information, which is not limited in this application. For example, it can also be used to indicate the transmission direction (D/U/F) of the MT resource and DU resource of the second node and the third node, the type of DU resource (soft/hard), the location of the NULL resource of the DU, etc. The length of the area, etc.

Optionally, the above resource configuration information may be generated by the donor node and sent to the first node, and then sent by the first node to the second node, or generated by the donor node and sent to the second node.

It should be understood that the indication content of the resource configuration information acquired by the second node should be considered fixed without reconfiguration. Here, the fixed indication content of the resource configuration information means that the number of the soft resource indicated by the upper-level node is fixed, and it should not be understood that the available state of the dynamic resource indicated each time is unchanged. For example, the first indication area indicated by the first indication information periodically sent by the first node includes 6 time slots, where time slot 0, time slot 2 and time slot 4 correspond to soft resources of the DU. According to the resource configuration information of the second node obtained from the first node, the second node can know that the dynamic resources corresponding to timeslot 0, timeslot 2 and timeslot 4 need the timeslot number indicated by the first node. For example, the first node indicates the available status of the dynamic resources corresponding to time slot 2 and time slot 4 in each cycle, and the indication results of the available status of the dynamic resources corresponding to time slot 2 and time slot 4 may be different in each cycle. .

In step 220, the second node receives the first indication information sent by the first node, where the first indication information is used to indicate the available status of one or more of the dynamic resources on the first indication area of the second node.

In this article, the available states of dynamic resources include two states: available and unavailable.

Here, the first indication information may specifically be the indication DCI described above. For the convenience of description, the first indication information is also referred to as the first indication DCI below.

Specifically, the second node receives the first indication information (ie, the first indication DCI) sent by its superior node (ie, the first node), the first indication information can indicate whether one or more dynamic resources on the first indication area are available . Optionally, the first indication information may explicitly indicate whether one or more dynamic resources on the first indication area are available, or may indicate implicitly, which is not limited in this application.

Here, the explicit indication means that the first indication information directly indicates the available status of the dynamic resource of the DU of the second node. The implicit indication means that the first indication information indicates the available status of some resources of the MT of the second node. The second node determines the available state of the dynamic resource of the DU according to the available state of some resources of the MT indicated by the first indication information.

For example, in an implicit indication manner, the first indication information can be used to indicate the available status of some resources of the MT of the second node in the first indication area, and all or part of the partial resources of the MT are in the time domain. The above corresponds to the dynamic resource of the DU of the second node, and the first indication information can indirectly indicate the availability of the dynamic resource of the DU (or the dynamic resource of the second node) by indicating whether to release the MT resource.

In a possible implementation, in an implicit indication manner, the first indication information can be used to indicate the available status of some resources of the MT of the second node in the first indication area, A part corresponds to the unavailable resource of the DU of the second node in the time domain. At this time, regardless of whether the first indication information releases the MT resource, the corresponding DU unavailable resource is still unavailable.

In another possible implementation, in an implicit indication manner, the first indication information can be used to indicate the available status of some resources of the MT of the second node in the first indication area, and some resources of the MT A part of MT corresponds to the hard resource of the DU of the second node in the time domain. At this time, there can be two situations: (1) Regardless of whether the first indication information releases this part of the MT resource, the corresponding DU hard resource is always Available; (2) The indication of this part of the MT resource by the first indication information will never affect the availability of the DU hard resource of the second node. For TDM scenarios or the MT and DU uplink and downlink configurations are the same (the same downlink or the same uplink) In the SDM scenario, the first indication message always releases this part of MT resources.

For another example, in an explicit indication manner, the first indication information may also be used to indicate the available status of the dynamic resource of the DU of the second node on the first indication area. The second node can determine the available state of the dynamic resource of the DU of the second node according to the first indication information.

It should be understood that, before receiving the first indication information, the second node first needs to receive the configuration information of the first indication information.

In an embodiment, the configuration information of the first indication information may include at least one of the following information:

The start time of the first indication area, the end time of the first indication area, the duration of the first indication area, the interval between the end time of the time domain resource where the first indication information is located and the start time of the first indication area (That is, indicate the time delay).

In addition, the configuration information of the first indication information may further include: resource identifiers of one or more resources to be indicated. Here, the resource to be indicated means the MT resource or the DU resource to be indicated; the resource identifier may be at least one of a symbol number, a slot number, a subframe number, and a system frame number.

The description of the configuration information of the explicit indication, the implicit indication and the first indication information has been described in detail in the foregoing, and will not be repeated here.

Optionally, the first indication information may further include a configuration type indication, and the configuration type indication is used to indicate whether the resource in the configuration information is incremental configuration or reconfiguration. If it is an incremental configuration, the first indication information contains only a small amount of increased or decreased dynamic resources, thereby reducing signaling overhead. In the reconfiguration, all previous dynamic resources configured through the first indication information will be ignored, and the dynamic resources in the configuration information will be completely used. It should be understood that the two types of configuration type indications can be used interchangeably, and this application does not restrict the use conditions of incremental configuration or reconfiguration.

In step 230, the second node determines second indication information according to the first indication information and resource configuration information. The second indication information is used to indicate the resource availability status between the second node and the third node on the second indication area, the second indication area includes at least one dynamic resource not indicated by the first indication information, and the second indication information indicates The state of the at least one dynamic resource indicated by the first indication information is unavailable.

Specifically, the resource between the second node and the third node can be understood as the resource used for communication between the second node and the third node, for example, it can be the MT resource of the third node, or the resource of the second node. DU resources.

Optionally, the second indication information is used to indicate the available status of resources between the second node and the third node in the second indication area, which can be understood as the second indication information used to indicate the MT of the third node in the second indication area The available status of the resource.

Optionally, the second indication information is used to indicate the available status of the resources between the second node and the third node on the second indication area, and can also be understood as the second indication information used to indicate the status of the second node on the second indication area The available status of the DU resource.

In a possible implementation, the at least one dynamic resource not indicated by the first indication information is the dynamic resource of the second node in the aforementioned X area.

Referring to FIG. 12, the first indication information received by the second node from the first node is used to indicate the first indication area, and the second indication information is used to indicate the second indication area to the third node. Wherein, the area located after the end position of the first indication area in the second indication area is the X area referred to here. In other words, the second indication area may include two parts, an S area and an X area as shown in FIG. 12, respectively. The S area is the overlapping part of the second indicator area and the first indicator area, and the X area is the part of the second indicator area located after the end time of the first indicator area in the time domain. The first indicator information cannot be used for the X area. The resources within.

It should be understood that the second indication information is used to indicate the availability status of some or all of the dynamic resources in the second indication area, that is, the second indication information is used to indicate the availability of dynamic resources in the S area of the second indication area. The status also indicates the available status of the dynamic resources in the X area of the second indication area.

Wherein, the available state of the dynamic resource in the S area is determined according to the available state of the dynamic resource in the first indication area indicated by the first indication information. It is understandable that since the S area is the overlapping part of the first indication area and the second indication area, the second node determines the available status of the dynamic resources of the third node in the S area according to the first indication information, and then further The third node indicates that it will not conflict with the available state of the dynamic resource in the first indication area of the second node indicated by the first indication information.

Since the X area is located after the end time of the first indication area, the first indication information sent by the first node to the second node only indicates the end time of the first indication area. For those located after the end time of the first indication area The time domain resource is not indicated in the first indication information. However, when the second node indicates the availability status of the dynamic resources of the third node, it needs to indicate the availability status of the dynamic resources in the X area after the end time of the first indication area. In other words, when the first node has not yet indicated to the second node the available status of the dynamic resources in the X area, the second node needs to indicate the available status of the dynamic resources in the X area to the subordinate node in advance. If the second node blindly indicates the available status of the dynamic resources in the X area to the third node without considering the first node’s indication of the dynamic resources in the X area, it may follow up with the first node on the X area. The dynamic resource indicates conflicts.

In this embodiment, the second indication information indicates that the state of the at least one dynamic resource that is not indicated by the first indication information is unavailable, so that no resource indication conflict problem occurs. A further description will be given below in conjunction with Figure 15.

Fig. 15 shows an example of an X area resource configuration. In Figure 15, the second node in area X includes three soft resources corresponding to time slots 0, 2, and 4, where the second node can know the two soft resources corresponding to time slots 2 and 4 according to resource configuration information. The soft resource will be indicated by the first node, that is, in the X area, the second node includes two dynamic resources corresponding to the second and fourth time slots.

The second indication information may indicate that the status of the above two dynamic resources is unavailable. Specifically, the second indication information may indicate that the MT resources of the second and fourth time slots of the third node are unavailable. At this time, no matter what the result of the indication of the above two dynamic resources by the first node in the future (the indication is available or unavailable), the problem of resource indication conflict will not arise.

In another possible implementation, the second indication information does not indicate to the third node the available status of the dynamic resources not indicated by the first indication information. That is, the indication resource of the second indication information does not include dynamic resources that are not indicated by the first indication information; in other words, the indication resource of the second indication information only includes the fixed resources of the second node in the X area.

Optionally, the second indication area further includes Y fixed resources, and the second indication information indicates that the availability status of Z of the Y fixed resources is available or unavailable, where Y and Z are integers greater than or equal to 0 , And Z is less than or equal to Y.

Optionally, the Y fixed resources not indicated by the first indication information may be fixed resources of the second node in the X area. In Figure 15, the second node includes a total of four fixed resources of time slots 0, 1, 3, and 5 (that is, the Y value is 4), where the 0th time slot corresponds to the second node that will not be indicated by the first node Soft resources, the first time slots 1, 3, and 5 are hard resources.

The second indication information may indicate the availability status of 0, 1, or more of the above four fixed resources, for example, indicate that they are available or unavailable. As shown in FIG. 15, the second indication information may indicate the fixed resources corresponding to the 0th and 1st time slots (that is, the Z value is 2). Specifically, the second indication information may indicate whether the MT resources of the 0th and 1st time slots of the third node are available or unavailable.

Optionally, the DU resources of the third node corresponding to the Z fixed resources may be dynamic resources of the third node.

In step 240, the second node sends second indication information to the third node.

It should be understood that the behavior of the third node after receiving the second indication information sent by the second node (that is, the first indication information relative to the third node) may be consistent with the behavior of the second node after receiving the first indication information. I will not repeat them here.

The above describes the resource indication method provided by this application mainly from the perspective of the second node. The processing procedures of the first node and the third node have a corresponding relationship with the processing procedures of the second node. For example, the second node receives from the first node. The first indication information means that the first node sends the first indication information to the second node; the second node sends the second indication information to the third node, which means that the third node receives the second indication information from the second node. Therefore, even if the processing procedures of the first node and the third node are not clearly stated in some places above, those skilled in the art can clearly understand the processing procedures of the first node and the third node based on the processing procedures of the second node.

In the embodiment of the present application, the second node obtains its own resource configuration information, and receives from the upper-level node the first indication information indicating the available status of the dynamic resource of the second node in the first indication area. When the resource that the second node needs to indicate to the subordinate node exceeds the instruction of the superior node, the second node determines how to instruct the subordinate node according to its resource configuration information. Since the resource configuration of the second node is fixed, even if instructions are given to subordinate nodes in advance, subsequent instructions received will not conflict with previous instructions.

FIG. 16 shows the resource indication method 300 provided by the present application, which can also avoid resource indication conflicts. The method 300 includes steps 310-340. The method 300 will be described below with reference to FIGS. 16-18.

Similarly, in the method 300, the first node is an upper-level node of the second node, and the third node is a lower-level node of the second node, which will not be described in detail below.

In step 310, the second node obtains resource configuration information, and the resource configuration information is used to indicate the fixed resource and dynamic resource configuration of the second node and the third node.

The fixed resources of the second node include hard resources and soft resources that will not be indicated as available by the first node, and the dynamic resources of the second node include soft resources that will be indicated as available by the first node.

The fixed resources of the third node include hard resources and soft resources that will not be indicated as available by the second node, and the dynamic resources of the third node include soft resources that will be indicated as available by the second node.

In a possible implementation, the fixed resource and dynamic resource configuration of the second node and the third node are inferred from the resource configuration of the MT of the second node and the third node, that is, the fixed resources of the second node and the third node And dynamic resources are implicitly configured.

That is, according to the resource configuration information, the second node can determine which soft resources of the second node will be indicated by the superior node. At the same time, the second node can determine which third node soft resources need to be indicated according to the resource configuration information. Alternatively, the second node can determine which third node's MT resources need to be indicated according to the resource configuration information.

In a possible implementation, the second node does not have the complete fixed resource and dynamic resource configuration of the third node. For example, the DU resource of the third node corresponding to a part of the MT resources of the third node indicated by the second node may not be a dynamic resource, for example, it may be an unavailable resource or a hard resource of the DU.

Generally, the resource configuration information of the second node and the third node is sent by the first node to the second node through different signaling.

In step 320, the second node receives the first indication information sent by the first node, where the first indication information is used to indicate the available status of one or more of the dynamic resources on the first indication area of the second node.

Step 320 can be understood with reference to step 220 in the method 200, and details are not described herein again.

In step 330, the second node determines second indication information according to the first indication information and resource configuration information. The second indication information is used to indicate the availability of one or more of the dynamic resources on the second indication area of the third node. State, the second indication area includes the first area, the first area includes K dynamic resources, the first area is located after the end position of the first indication area, and K is a non-negative integer.

Optionally, the first area may be the aforementioned X area.

The resource configuration information in the aforementioned method 200 is used to indicate the fixed resource and dynamic resource configuration of the second node. In this embodiment, the resource configuration information may indicate the fixed resource and dynamic resource configuration of the second node and the third node. In the aforementioned method 200, the determination of the second indication information in this embodiment comprehensively considers the possible impact of the configuration of the fixed resources and dynamic resources of the third node.

For the implicit indication mode in the TDM scenario, the second indication information is used to indicate the available status of one or more of the dynamic resources on the second indication area of the third node, which can be understood as the second indication information indicating the third node For the corresponding available status of the MT resource, the method for determining the second indication information will be discussed below from the perspective of the MT resource of the third node.

In a possible implementation manner, the MT resource of the third node indicated by the second indication information sent by the second node to the third node is orthogonal to the dynamic resource of the second node that will be indicated by the first node. Alternatively, the dynamic resource of the DU of the third node indicated by the second indication information sent by the second node to the third node is orthogonal to the dynamic resource of the second node that will be indicated by the first node.

According to the resource configuration information of the second node, the first node will indicate the available status of some or all of the dynamic resources in the first indication area. According to the above description of the resource configuration information of the second node, the second node can know which soft resources need to be indicated by the first node according to the resource configuration information of the second node. Therefore, when the second node indicates to the third node the available status of the MT resources in the X area in advance, it will always release the MT resources corresponding to the DU resources that may be indicated by the first node after the first indication area (or indicate as Unavailable), you can avoid conflicts.

Specifically, the second node may determine the available status (whether released) of the MT resources of the K third nodes contained in the X area according to the resource configuration information, and the K MT resources corresponding to the second node DU in the time domain The time domain resource belongs to the fixed resource included in the resource configuration information of the second node. The second node may determine the second indication information according to the determined availability status of the K MT resources, or the second node may determine the second indication information according to the determined K MT resources. The available status of the MT resource is generated and the second indication information is sent to the third node.

Fig. 17 shows an example of the resource allocation of the X area. In FIG. 17, the second node determines the available status of the K MT resources contained in the X area of the third node according to the resource configuration information. For example, it may be determined that one or more of the K MT resources are available, and the rest Is not available.

In the X area, you can configure the dynamic resources of the second node (that is, the soft resources of the DU of the second node corresponding to time slots 0, 2, and 4) and the to-be-indicated MT resources of the third node (that is, the first 1, 3, and 5 The MT resource of the third node corresponding to the time slot, where the K value is 3) is orthogonal in the time domain, so that the first indication information of the next cycle (that is, the second first indication DCI of the second node in Figure 12) ) And the second indication information (that is, the first second indication DCI of the second node in FIG. 12) when indicating respective dynamic resources, no conflict occurs, and the second indication information can indicate that K MT resources are determined For example, it may indicate that one or more of the K resources are available, and the rest are unavailable.

Among them, the dynamic resource of the second node and the MT resource to be instructed of the third node are orthogonal in the time domain. It can be understood that the dynamic resource of the second node and the MT resource to be instructed of the third node are staggered in the time domain and do not occur. Overlap (or rather, not correspond).

Alternatively, the MT resource (indicated by the first node to the second node) and the DU resource (indicated by the second node to the third node) of the second node satisfy the time division multiplexing, or do not violate the half-duplex constraint. The dynamic resource of the third node corresponds to the fixed resource of the second node in the time domain, or the MT resource that the third node will be instructed corresponds to the fixed resource of the second node DU in the time domain.

In other words, the MT resource of the third node corresponding to the dynamic resource indicated by the second node will not be indicated.

Therefore, the time domain resources of the second node corresponding to the MT resources of the K third nodes (each of them) in the time domain can be configured to belong to the fixed resources (included in the resource configuration information) of the second node. The fixed resource of the second node will not be indicated by the first indication information, or the fixed resource of the second node is always available. Therefore, the second indication information can correspond to the time domain resource of the third node in the time domain. Give instructions.

The second node may determine the available status of the MT resources of the K third nodes contained in the X area according to the resource configuration information, and determine the second indication information according to the available status of the K resources.

It can be understood that by means of orthogonal indications, even if the second node indicates the available status of the MT resources in the X area to the third node in advance, it can naturally avoid conflicts with subsequent indications of the first node.

In another possible implementation manner, the MT resource of the third node indicated by the second indication information sent by the second node to the third node and the dynamic resource to be indicated by the first node are not orthogonal. However, it is possible to avoid conflicts by making some constraints on the content of the instructions of the second node.

Specifically, the second node may indicate N of the MT resources of the K third nodes contained in the X area as unavailable according to the resource configuration information, or the second node may release the MT resources of the N third nodes , The time domain resources of the second node DU corresponding to the N MT resources in the time domain belong to the dynamic resources included in the resource configuration information of the second node, and N is a non-negative integer less than or equal to K, and the second node The second indication information is determined according to the available status of the K MT resources. In other words, the second node generates and sends second indication information to the third node according to the available status of the K MT resources.

Specifically, FIG. 18 shows another example of the resource configuration of the X area. In FIG. 18, the second node determines the available status of the K MT resources contained in the X area of the third node according to the resource configuration information.

Specifically, in the aforementioned embodiment shown in FIG. 17, the K MT resources of the third node and the dynamic resources of the second node are orthogonal in the time domain. This embodiment will discuss the K MT resources of the third node. It is not orthogonal to the dynamic resources in the second node in the time domain. At this time, a part (ie, N) of the K MT resources of the third node correspond to the time domain resources of the second node in the time domain belong to the dynamic resources of the second node (included in the resource configuration information), or, All of the K MT resources of the third node corresponding to the time domain resources of the second node in the time domain belong to the dynamic resources of the second node.

As shown in Figure 18, in the X area, the dynamic resource of the second node can be configured as the soft resource of the DU of the second node corresponding to time slots 0, 2, and 4, and the to-be-indicated MT resource of the third node can be configured as The MT resources of the third node corresponding to the 0-5th time slots, that is, the 6th time slots 0-5 of the third node are all to-be-indicated resources of the MT of the third node.

Among them, the time domain resources of the second node corresponding to the first, third, and fifth time slots of the third node in the time domain belong to the fixed resources of the second node DU. Therefore, the second indication information can arbitrarily determine the above three (ie The difference between K and N) the available status of the MT resource. For example, it can be determined that one or more of the three resources are available, and the rest are unavailable.

Among them, the time domain resources of the second node corresponding to the 0th, 2nd, and 4th time slots of the third node in the time domain belong to the dynamic resources of the second node DU. The indication of the time slot (that is, the content of the second indication information) should be restricted.

Specifically, the protocol may specify that the MT resources of the third node of the third node are indicated as unavailable (released) for the aforementioned N (ie, the 0th, 2nd, and 4th time slots), or the corresponding Nth The dynamic resource indication of the three-node DU is available.

That is, the MT resource of the third node corresponding to the soft resource indicated by the second node may also be indicated, and at this time, it may indicate that the MT resource of the third node is unavailable.

Therefore, the second node may determine the second indication information according to the availability (available or unavailable) of K-N (that is, the difference between K and N) MT resources and the availability (unavailable) of the N MT resources.

As another possible implementation manner, the indication of the aforementioned N dynamic resources of the second node (that is, the content of the first indication information) may also be limited.

Specifically, the protocol may specify that the above-mentioned N dynamic resources (explicit or implicit) of the second node are indicated as available.

That is, the MT resource of the third node corresponding to the soft resource indicated by the second node may also be indicated. At this time, the protocol can specify that the N dynamic resources indicated by the second node are unavailable. Under this premise, the second indication information can arbitrarily indicate the availability status of the above N dynamic resources. For example, it can be determined that One or more are available, and the rest are unavailable.

That is, at this time, the second indication information can arbitrarily indicate the available status of the K dynamic resources, for example, it can indicate that one or more of the K resources are available, and the rest are unavailable. The second node may determine the second indication information according to the available status of the K dynamic resources.

Considering the indications of the second indication information to the MT resources or DU dynamic resources of the S area and X area of the third node, the following criteria can be obtained:

1) When one MT resource of the third node corresponds to the fixed resource of the second node DU, the second node can indicate the availability (available or unavailable) of the MT resource through the second indication information or other dynamic signaling;

2) When an MT resource of the third node corresponds to an unavailable resource of the second node DU, the second node can indicate that the availability of the MT resource is unavailable through the second indication information or other dynamic signaling, or the second node No indication of the availability of the MT resource;

3) When one MT resource of the third node corresponds to the dynamic resource of the second node DU, and the second node learns through the first indication information or other dynamic signaling that this dynamic resource is indicated (explicitly or implicitly) as unavailable , The second node may indicate that the availability of the MT resource is unavailable through the second indication information or other dynamic signaling, or the second node may not indicate the availability of the MT resource;

4) When one MT resource of the third node corresponds to the dynamic resource of the second node DU, and the second node learns through the first indication information or other dynamic signaling that this dynamic resource is indicated (explicitly or implicitly) as available , The second node can indicate the availability (available or unavailable) of the MT resource through the second indication information.

5) When an MT resource of the third node corresponds to the dynamic resource of the second node DU, but the second node has not yet obtained the first indication information or other dynamic signaling indicating the dynamic resource, the second node can pass The second indication information indicates that the availability of the MT resource is unavailable, or the second node does not indicate the availability of the MT resource.

In 5), the indication that the second node has not obtained the first indication information for the dynamic resource indicates that the second node has not received the corresponding first indication information, or the second node has received the corresponding first indication information The time does not exceed a threshold, and the threshold includes decoding delay, protocol-defined delay, etc. In a possible implementation manner, the first node does not have the content of the second indication information sent by the second node to the third node. At this time, the second node may also send part or all of the second indication information to the first node. For example, this part or all of the information may include: related information of the second indication area (for example, start time, end time, duration, indication delay, etc.), the resource identifier of the dynamic resource of the third node, and the information of the X area Identification of dynamic resources, etc.

In a possible implementation manner, the dynamic resources of the second node or the third node (for example, the dynamic resources of the X area) can be locked through locking signaling. For the locked dynamic resources of the second node, the second node It is considered that the above dynamic resources will always be indicated as available or always indicated as unavailable.

Or, for the locked dynamic resource of the third node, the second node will always think that the lower-level node will use or not use this resource.

The locking signaling can be transmitted through various signaling, such as MAC CE.

Optionally, the locked resource may also be an MT resource. For example, the first node sends signaling to the second node, indicating that several MT resources of the second node are locked. Then the second node thinks that these resources will always be released, or will never be released.

In step 240, the second node sends second indication information to the third node.

Specifically, the DU of the second node sends the second indication information to the MT of the third node. As a possible implementation, in order to ensure that the second node sends the second indication message to the third node smoothly, the protocol may stipulate: The time domain resource (specifically, the DU resource of the second node) where the second indication message is located will never be indicated as unavailable by the first indication message.

The second node in the embodiment of the present application obtains resource configuration information, which can indicate the resource configuration of itself and the third node, and receives from the upper-level node the second node indicating the availability status of the dynamic resources of the second node in the first indication area. One instruction information. When the resource that the second node needs to indicate to the subordinate node exceeds the instruction of the superior node, the second node determines how to instruct the subordinate node according to the resource configuration information. Since the resource configuration of the second node and the third node is fixed, even if an instruction is given to the subordinate node in advance, the subsequent received instruction will not conflict with the previous instruction.

Fig. 19 shows another example of DCI configuration in a multi-hop IAB system.

Compared with the embodiment shown in FIG. 12, this application has multiple (for example, two) indicator DCIs that collectively indicate an indicator area, so that the robustness of the indicator DCI can be increased. At this time, multiple indication DCIs have different indication delays.

Wherein, the start position of the first indication area of the first indication DCI coincides with the start position of the resource where the first second indication DCI is located, and continues to the start position of the resource where the first second indication DCI is located in the next cycle, or That is, it continues until the start position of the indicator area of the first indicator DCI in the next cycle.

It should be understood that the aforementioned method 200 or method 300 can also be applied to the multi-hop IAB system shown in FIG. 19 to indicate dynamic resources.

Fig. 20 shows another example of DCI configuration in a multi-hop IAB system.

The end time of the second indication area in this embodiment is also after the end time of the first indication area. Therefore, the X area will also appear in this embodiment, but this embodiment does not cause resource indication conflicts.

Specifically, the indication area of this embodiment is different from the previous embodiment. This embodiment still has indication delay. In FIG. 18, the start position of the first indication area of the first indication DCI is not earlier than the transmission position of the resource where the second indication DCI is located, and the first indication area of the first indication DCI is The end time of is not longer than the second node receiving the resource location of the first indication DCI in the next cycle.

At this time, in the X area, the first indication DCI will not indicate the dynamic resources of the second node in the X area. Therefore, even if the second indication DCI will indicate in advance the MT resources of the third node in the X area, There is no problem of resource indication conflicts, and the second node can arbitrarily determine the available state of the dynamic resources of the third node in the X area.

However, this embodiment has a problem that the indication range is reduced.

Specifically, because there is an indication delay, and the length of the indication delay is greater than or equal to the processing delay, the indication DCI will not indicate the dynamic resources in this period of time (the range of this area may be large), so that dynamic The proportion of the indication range is reduced, which affects the performance of the dynamic indication.

The precondition of the foregoing discussion is that one indication DCI corresponds to one indication area. Similarly, as a possible implementation, multiple indication DCIs can indicate a common indication area. In this case, the following restrictions can be made:

1. The start position of the first indication area of the first indication DCI is not earlier than the position of any one of the multiple resources for sending multiple second indication DCIs by the second node, for example, the first or last second indication Resource location of DCI;

2. The end position of the first indication area of the first indication DCI does not exceed the second node receiving any one of the multiple first indication DCI resources in the next cycle, for example, the first one or the last one Indicates the resource location of DCI.

The previous embodiments discussed various methods to avoid dynamic resource allocation conflicts. The following discusses when the IAB node is not configured to indicate DCI, or is configured but does not detect the behavior of indicating DCI in the search space.

Still taking the second node in the previous article as an example, when the second node does not detect the first indication DCI, the MT of the second node can perform PDCCH monitoring on the search space of all optional resources. MT resource conflicting with the fixed resource of the DU of the second node;

Or, perform PDSCH reception according to the scheduling of the first node;

Or, PUSCH transmission and/or PUCCH transmission are performed according to the scheduling of the first node.

Optionally, the second node may receive a reference signal configured by a higher layer, such as a CSI-RS;

Optionally, the second node does not send a reference signal configured by a higher layer, such as an SRS.

The following discusses the sending behavior of the second indicator DCI after the second node does not detect the first indicator DCI.

As a possible implementation manner, when the IAB node does not detect the first indication DCI, it gives up sending the second indication DCI.

As a possible implementation manner, when the IAB node does not detect the first indication DCI, its second indication DCI adopts an orthogonal indication, that is, the second indication DCI sent by the second node uses the second indication DCI corresponding to all its DU soft resources. The MT resources of the three nodes are released.

The method for indicating resources provided by this application is described in detail above, and the device for indicating resources provided by this application is introduced below.

Refer to FIG. 21, which is a schematic structural block diagram of an apparatus 500 for indicating resources provided in this application. As shown in FIG. 21, the device 500 includes a processing unit 510 and a transceiver unit 520.

The transceiver unit 510 is configured to obtain resource configuration information, and the resource configuration information is used to indicate the configuration of fixed resources and dynamic resources of the device and the third node;

The transceiver unit 510 is further configured to receive first indication information sent by the first node, where the first indication information is used to indicate the available status of one or more of the dynamic resources on the first indication area of the device, and the first node Is the superior node of the device;

The processing unit 520 is configured to determine second indication information according to the first indication information and resource configuration information, the second indication information is used to indicate the available status of the resource between the device 500 and the third node in the second indication area, and the second indication The area includes at least one dynamic resource not indicated by the first indication information, and the second indication information indicates that the state of the at least one dynamic resource not indicated by the first indication information is unavailable;

The transceiver unit 510 is further configured to send second indication information to a third node, and the third node is a subordinate node of the device.

In an embodiment, the processing unit 520 is specifically configured to: the second indication area further includes Y fixed resources that are not indicated by the first indication information, and the second indication information indicates that Z of the Y fixed resources The available status is available or unavailable, where Y and Z are integers greater than or equal to 0, and Z is less than or equal to Y.

In still another embodiment, the dynamic resources included in the first indication area include the first dynamic resources, the one or more dynamic resources indicated by the first indication information include the first dynamic resources, and the transceiver unit 510 is further configured to :

Receive third indication information from the first node, the third indication information indicating the available status of the first dynamic resource, the available status of the first dynamic resource indicated by the third indication information and the available status of the first dynamic resource indicated by the first indication information Differently, the third indication information is located after the first indication information in the time domain; the available status of the first dynamic resource is determined according to the available status of the first dynamic resource indicated by the third indication information.

Alternatively, the device 500 may be a chip or an integrated circuit.

The chip described in the embodiment of the application may be a field-programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), and a central Processor (central processor unit, CPU), network processor (Network Processor, NP), digital signal processing circuit (digital signal processor, DSP), can also be a microcontroller (microcontroller unit, MCU, programmable controller ( programmable logic device (PLD) or other integrated chips.

Optionally, the processing unit 510 may be a processor. The transceiver unit 510 may be composed of a receiving unit and a transmitting unit. The transceiver unit 520 may be a transceiver, and the transceiver may include a transmitter and a receiver, and has both receiving and sending functions. Optionally, the transceiver unit 510 may also be an input/output interface or an input/output circuit.

In another possible manner, the transceiver unit 520 may be a communication interface. For example, input and output interfaces, input interface circuits and output interface circuits.

It should be understood that the apparatus 500 may correspond to the second node in the embodiment of the method for indicating resources provided in this application. The units included in the apparatus 500 are respectively used to implement corresponding operations and/or procedures performed by the second node in the method embodiments.

For example, the transceiver unit 510 is further configured to obtain resource configuration information, first indication information. The processing unit 520 is configured to determine second indication information according to the first indication information and resource configuration information. For another example, the transceiver unit 510 is further configured to send second indication information to the third node.

The present application also provides a network device 1000, which is described below with reference to FIG. 22.

Referring to FIG. 22, FIG. 22 is a schematic structural diagram of a network device 1000 provided in this application. The network device 1000 is used to implement the function of the second node in the method embodiment. As shown in FIG. 22, the network device 1000 includes an antenna 1101, a radio frequency device 1102, and a baseband device 1103. The antenna 1101 is connected to the radio frequency device 1102. In the downlink direction, the radio frequency device 1102 receives signals sent by other network devices through the antenna 1101, and sends the received signals to the baseband device 1103 for processing. In the upstream direction, the baseband device 1103 processes the signals that need to be sent to other network devices and sends them to the radio frequency device 1102. The radio frequency device 1102 processes the signals and sends them to other network devices via the antenna 1101.

The baseband device 1103 may include one or more processing units 11031. In addition, the baseband device 1103 may further include a storage unit 11032 and a communication interface 11033. The storage unit 11032 is used to store programs and data. The communication interface 11033 is used to exchange information with the radio frequency device 1102. The communication interface 11033 may be an input/output interface or an input/output circuit.

The network device 1000 in the above apparatus embodiment may completely correspond to the second node in the method embodiment, and the corresponding unit included in the network device 1000 is used to execute the corresponding steps performed by the second node in the method embodiment.

For example, the radio frequency device 1102 obtains resource configuration information and first indication information from the first node, and sends them to the baseband device 1103. The baseband device 1103 determines second indication information according to the first indication information and resource configuration information, and sends the second indication information to the radio frequency device 1102. The radio frequency device 1102 sends second indication information to the third node.

For another example, the radio frequency device 1102 receives the third instruction information from the first node, and sends the third instruction information to the baseband device 1103. The baseband device 1103 determines the available state of the first dynamic resource according to the third indication information.

In addition, the present application provides a computer-readable storage medium. The computer-readable storage medium stores computer instructions. When the computer instructions run on the computer, the computer executes the corresponding operations performed by the second node in any method embodiment. And/or process.

This application also provides a computer program product. The computer program product includes computer program code. When the computer program code runs on a computer, the computer executes the corresponding operations performed by the second node in the embodiment of the method for indicating resources provided by this application. And/or process.

The present application also provides a communication system, which includes at least a first node, a second node, and a third node, where the first node is used to perform operations performed by the first node in FIG. 14 or FIG. 16 and/ Or processing, the second node is used to perform the operation and/or processing performed by the second node in Figure 14 or Figure 16, and the third node is used to perform the operation and/or processing performed by the third node in Figure 14 or Figure 16 .

This application also provides a chip including a processor. The processor is used to call and run the computer program stored in the memory to execute the corresponding operation and/or process executed by the second node in the method embodiment for indicating resources provided in this application.

Optionally, the chip further includes a memory, and the memory is connected to the processor. The processor is used to read and execute the computer program in the memory.

Further optionally, the chip further includes a communication interface, and the processor is connected to the communication interface. The communication interface is used to receive signals and/or data that need to be processed, and the processor obtains the signals and/or data from the communication interface and processes them.

Optionally, the communication interface may be an input/output interface, which may specifically include an input interface and an output interface. Alternatively, the communication interface may be an input/output circuit, which may specifically include an input circuit and an output circuit.

The memory and the memory involved in the foregoing embodiments may be physically independent units, or the memory may also be integrated with the processor.

The device 500 described in the above device embodiments may be a chip on the baseband device 1103, and the chip includes at least one processing unit and an interface circuit. Wherein, the processing element is used to execute each step of any method executed by the above network device (that is, the second IAB node), and the interface circuit is used to communicate with other devices.

In one implementation, the unit for the network device to implement each step in the above method can be implemented in the form of a processing unit scheduler. For example, the processing unit 11031 calls a program stored in the storage unit 11032 to execute the method executed by the first IAB node in the above method embodiment. The storage unit 11032 may be the processing unit 11031 on the same chip, that is, an on-chip storage unit, or may be a storage element on a different chip from the processing unit 11031, that is, an off-chip storage unit.

In the above embodiments, the processor may be a central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more of them used to control the technology of the application Integrated circuits for program execution, etc. For example, the processor may be a digital signal processor device, a microprocessor device, an analog-to-digital converter, a digital-to-analog converter, etc. The processor can distribute control and signal processing functions of terminal devices or network devices among these devices according to their respective functions. In addition, the processor may have a function of operating one or more software programs, and the software programs may be stored in the memory. The functions of the processor can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

The memory can be read-only memory (ROM), other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions Dynamic storage devices can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), or other optical disk storage, optical disc storage ( Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can Any other medium accessed by the computer, etc.

In the embodiments of the present application, "and/or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist simultaneously, and B exists alone. Happening. Among them, A and B can be singular or plural.

A person of ordinary skill in the art may be aware that, in combination with the examples described in the embodiments disclosed herein, the units can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professional technicians can use different methods for each specific application to achieve the described functions.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (15)

A method for indicating resources, characterized by comprising: The second node obtains resource configuration information, where the resource configuration information is used to indicate the configuration of fixed resources and dynamic resources of the second node; The second node receives the first indication information sent by the first node, where the first indication information is used to indicate the available status of one or more of the dynamic resources on the first indication area of the second node, so The first node is an upper-level node of the second node; The second node determines second indication information according to the first indication information and the resource configuration information, where the second indication information is used to indicate the difference between the second node and the third node in the second indication area The available state of the resources between the two, the second indication area includes at least one dynamic resource not indicated by the first indication information, and the second indication information indicates the at least one dynamic resource not indicated by the first indication information The status is unavailable; The second node sends the second indication information to the third node, and the third node is a subordinate node of the second node. The method according to claim 1, wherein the second node determining second indication information according to the first indication information and the resource configuration information comprises: The second indication area further includes Y fixed resources, and the second indication information indicates whether the availability status of Z of the Y fixed resources is available or unavailable, where Y and Z are greater than or equal to 0 Integer, and Z is less than or equal to Y. The method according to claim 1 or 2, wherein the first indication information is used to indicate the available status of some resources of the MT of the second node in the first indication area, and the second indication area Before the node determines second indication information according to the first indication information and the resource configuration information, the method further includes: The second node determines the available state of the dynamic resource of the DU of the second node according to the available state of some resources of the MT; Alternatively, the first indication information is used to indicate the available status of the dynamic resource of the DU of the second node in the first indication area, and the second node is configured according to the first indication information and the resource configuration Before the information determines the second indication information, the method further includes: The second node determines the available state of the dynamic resource of the DU of the second node according to the first indication information. The method according to any one of claims 1-3, wherein the configuration information of the first indication information comprises at least one of the following information: the start time of the first indication area, the The end time of the first indication area, the duration of the first indication area, the interval between the time domain resource location where the first indication information is located and the start time of the first indication area, the dynamic resource The resource identifier includes at least one of a symbol number, a slot number, a subframe number, and a system frame number. The method according to any one of claims 1 to 4, wherein the method further comprises: The second node receives third indication information from the first node, where the third indication information indicates the available status of one or more first dynamic resources on the first indication area, and the third indication information indicates The available state of the first dynamic resource is different from the available state of the first dynamic resource indicated by the first indication information, and the third indication information is located after the first indication information in the time domain; The second node determines the available state of the first dynamic resource according to the available state of the first dynamic resource indicated by the third indication information. The method according to any one of claims 1-5, wherein the first indication area includes a second dynamic resource, and the second node is in the second dynamic resource corresponding to the second dynamic resource. The node’s MT resource receives the fourth indication information from the first node, the MT resource of the second node corresponding to the second dynamic resource is configured to be always available through the protocol, or the second dynamic resource corresponds to The MT resource of the second node is indicated by the first node as always available through an indication information different from the fourth indication information. A device for indicating resources, characterized by comprising: The transceiver unit is configured to obtain resource configuration information, where the resource configuration information is used to indicate the fixed resource and dynamic resource configuration of the device; The transceiving unit is further configured to receive first indication information sent by the first node, where the first indication information is used to indicate the available status of one or more of the dynamic resources on the first indication area of the device, The first node is an upper node of the device; A processing unit, configured to determine second indication information according to the first indication information and the resource configuration information, where the second indication information is used to indicate resources between the device and the third node in the second indication area Available status, the second indication area includes at least one dynamic resource not indicated by the first indication information, and the second indication information indicates that the status of the at least one dynamic resource not indicated by the first indication information is not available use; The transceiving unit is further configured to send the second indication information to the third node, and the third node is a subordinate node of the apparatus. The device according to claim 7, wherein the processing unit is further configured to: The second indication area further includes Y fixed resources, and the second indication information indicates whether the availability status of Z of the Y fixed resources is available or unavailable, where Y and Z are greater than or equal to 0 Integer, and Z is less than or equal to Y. The device according to claim 7 or 8, wherein the first indication information is used to indicate the available status of some resources of the MT of the device on the first indication area, and the processing unit is based on the Before the first indication information and the resource configuration information determine the second indication information, they are also used to: The processing unit determines the available state of the dynamic resource of the DU of the device according to the available state of some resources of the MT; Alternatively, the first indication information is used to indicate the available status of the dynamic resource of the DU of the device on the first indication area, and the processing unit determines the first indication information and the resource configuration information. Before the second instruction information, it is also used to: The processing unit determines the available state of the dynamic resource of the DU of the device according to the first indication information. The device according to any one of claims 7-9, wherein the configuration information of the first indication information comprises at least one of the following information: the start time of the first indication area, the The end time of the first indication area, the duration of the first indication area, the interval between the time domain resource location where the first indication information is located and the start time of the first indication area, the dynamic resource The resource identifier includes at least one of a symbol number, a slot number, a subframe number, and a system frame number. The apparatus according to any one of claims 7-10, wherein the first indication area includes one or more first dynamic resources, The transceiver unit is further configured to receive third indication information from the first node, the third indication information indicating the available status of the first dynamic resource, and the first dynamic resource indicated by the third indication information The available state of the resource is different from the available state of the first dynamic resource indicated by the first indication information, and the third indication information is located after the first indication information in the time domain; The transceiver unit is further configured to determine the available state of the first dynamic resource according to the available state of the first dynamic resource indicated by the third indication information. The device according to any one of claims 7-11, wherein the first indication area includes a second dynamic resource, and the device has an MT resource of the device corresponding to the second dynamic resource. Receiving fourth indication information from the first node, the MT resource of the device corresponding to the second dynamic resource is configured to be always available through a protocol, or the MT resource of the device corresponding to the second dynamic resource The first node is indicated as always available through an indication information different from the fourth indication information. A computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, when the computer instructions run on a computer, the computer executes any one of claims 1-6 The method described. A chip, characterized by comprising a memory and a processor, the memory is used to store a computer program, and the processor is used to read and execute the computer program stored in the memory to execute as claimed in claims 1-6 The method of any one of. A communication system, characterized in that the system includes a first node, a second node, and a third node, and is characterized in that it includes: The second node executes the method for indicating resources according to any one of claims 1-6.

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