A method and device for dynamically indicating resources

Abstract

A method and apparatus for dynamic resource indication, for implementing dynamic resource indication in a multi-carrier MT (Mobile Mobile Equipment) and multi-cell scenario. The method comprises: a first node determining, based on first indication information sent by a second node or a host node, a semi-static resource configuration of first resources corresponding to D carriers and second resources corresponding to F cells; and the first node determining, based on second indication information sent by the second node or the host node, the available resource status of the first resources corresponding to the D carriers and the dynamic resource availability status of the second resources corresponding to the F cells.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for dynamically indicating resources. Background Art

[0002] With the continuous development of mobile communication technology, spectrum resources are becoming increasingly scarce. To improve spectrum utilization, future base station deployments will be denser. Furthermore, dense deployment can prevent coverage holes. In traditional cellular network architectures, base stations connect to the core network via optical fiber. However, in many application scenarios, optical fiber deployment is very expensive. Wireless relay nodes (RNs) connect to the core network via wireless backhaul links, saving some of the optical fiber deployment costs.

[0003] In general, a relay node RN establishes a wireless backhaul link with one or more upper-level nodes and accesses the core network through the upper-level nodes. The upper-level node can control the relay node through various signaling (for example, data scheduling, timing modulation, power control, etc.). In addition, the relay node can also provide services to multiple lower-level nodes. The upper-level node of the relay node can be a base station or another relay node; the lower-level node of the relay node can be another relay node or a terminal device (UE). In some cases, the upper-level node can also be called an upstream node, and the lower-level node can also be called a downstream node.

[0004] In-band relaying is a relay solution in which the backhaul link and the access link share the same frequency band. Since no additional spectrum resources are used, in-band relaying has the advantages of high spectrum efficiency and low deployment cost. In-band relaying generally has half-duplex constraints. Specifically, when a relay node receives a downlink signal from its upper node, it cannot send a downlink signal to its lower node. When a relay node receives an uplink signal from its lower node, it cannot send an uplink signal to its upper node. The in-band relay solution of the new generation wireless communication system (new radio, NR) is called integrated access and backhaul (IAB), and the relay node is usually called an IAB node.

[0005] The IAB node includes a terminal (mobile termination, MT) function and a distributed unit (distributed unit, DU) function. The terminal function is hereinafter referred to as the terminal unit, specifically referring to a function / module residing on the IAB node, which is used to distinguish it from the terminal device UE that can be used as a lower-level node in this application. Among them, MT is used for communication between the IAB node and the upper-level node, and DU is used for communication between the IAB node and the lower-level node. The lower-level node can be a terminal device UE or other IAB node. The link for communication between MT and the upper-level node is called the upper-level backhaul link (parent BH link), the link for communication between DU and the lower-level IAB node is called the lower-level backhaul link (child BH link), and the link for communication between DU and the lower-level UE node is called the access link (access link).

[0006] In some deployment scenarios, the DU of an IAB node may have multiple cells. Different DU cells may be sectors with different orientations or carriers with different frequency bands. Similarly, the mobile operator (MT) of an IAB node may also have multiple carriers with different frequency bands. Currently, there is no existing method for dynamic resource indication when the MT of an IAB node has multiple carriers and the DU has multiple cells. This application provides a dynamic resource indication method that can achieve dynamic resource sharing of backhaul resources and access resources. Summary of the Invention

[0007] The present application provides a method for dynamic resource indication, which solves the problem of dynamic resource indication when the MT of the IAB node has a multi-carrier DU and multiple cells.

[0008] In a first aspect, the present application provides a method for dynamic indication of resources, the method comprising: a first node receives first indication information sent by a second node or a host node, the first indication information being used to indicate a semi-static resource configuration of first resources corresponding to D carriers and second resources corresponding to F cells in the first node, wherein D≥1, F≥1; the first node determines the semi-static resource configuration of first resources corresponding to D carriers and second resources corresponding to F cells based on the first indication information; the first node receives second indication information sent by the second node, the second indication information being used to indicate an available status of available resources of the first resources corresponding to D carriers in the first node and an available status of dynamic resources of the second resources corresponding to F cells; the first node determines an available status of available resources of the first resources corresponding to D carriers and an available status of dynamic resources of the second resources corresponding to F cells based on the second indication information.

[0009] In the above technical solution, the second indication information sent by the second node can indicate the available status of the available resources of the first resources corresponding to D carriers and the available status of the dynamic resources of the second resources corresponding to F cells, and the first node can determine the cell and carrier to which the second indication information is applied, thereby achieving accurate indication of the available status of the available resources of the first resources corresponding to D carriers and the available status of the dynamic resources of the second resources corresponding to F cells in the case of MT multi-carrier DU multi-cell.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the first node receives second indication information sent by the second node, and the second indication information is only used to indicate the available status of the available resources of the first resources corresponding to the D carriers in the first node; the first node determines the available status of the available resources of the first resources corresponding to the D carriers based on the second indication information; the first node determines the available status of the dynamic resources of the second resources corresponding to the F cells based on the available status of the available resources of the first resources corresponding to the D carriers and the resource multiplexing relationship between the first resources corresponding to the D carriers and the second resources corresponding to the F cells.

[0011] In the above technical solution, the availability of DU soft resources can be derived through the display indication of the MT resources of the IAB node by the superior node of the IAB node and according to the resource multiplexing or association relationship between each carrier of the MT and each cell of the DU.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the first node receives second indication information sent by the second node, and the second indication information is only used to indicate the available status of the dynamic resources of the second resources corresponding to F cells in the first node; the first node determines the available status of the dynamic resources of the second resources corresponding to the F cells based on the second indication information; the first node determines the available status of the available resources of the first resources corresponding to the D carriers based on the available status of the dynamic resources of the second resources corresponding to the F cells, and the resource multiplexing relationship between the first resources corresponding to the D carriers and the second resources corresponding to the F cells.

[0013] In the above technical solution, the availability of MT resources can be derived through the display indication of the DU soft resources of the IAB node by the superior node of the IAB node and according to the resource multiplexing or association relationship between each carrier of the MT and each cell of the DU.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the second node is the upper node of the first node; the first resource is the transmission resource for communication between the first node and the second node, the second resource is the transmission resource for communication between the first node and the third node, and the third node is the lower node of the first node.

[0015] In combination with the first aspect, in some implementations of the first aspect, the available resources of the first resource are available resources determined after semi-static resource configuration of the first resource.

[0016] In the above technical solution, three resource types of D / U / F of MT resources can be obtained through semi-static resource configuration.

[0017] In combination with the first aspect, in some implementations of the first aspect, the dynamic resource of the second resource is a dynamic resource determined after the second resource is subjected to semi-static resource configuration.

[0018] In the above technical solution, through semi-static resource configuration, three resource types D / U / F of DU resources, hard / soft attributes of DU resources, and the time domain location of unavailable resources (NA) can be obtained.

[0019] In combination with the first aspect, in certain implementations of the first aspect, the resource multiplexing relationship between the first resources corresponding to the D carriers and the second resources corresponding to the F cells includes at least one of the following: time division multiplexing, half-duplex frequency division multiplexing, half-duplex space division multiplexing, full-duplex, dynamic adaptive frequency division multiplexing, dynamic adaptive space division multiplexing, and dynamic adaptive full-duplex.

[0020] In the above technical solution, after obtaining the resource configuration of the DU, the IAB node and the upper-level node can deduce the available / unavailable resources of the IAB MT based on the above resource reuse relationship. Alternatively, after obtaining the availability status of the MT's available resources, the IAB node and the upper-level node can deduce the availability status of the IAB node's DUsoft resources based on the above resource reuse relationship. Alternatively, after obtaining the availability status of the DUsoft resources, the IAB node and the upper-level node can deduce the availability status of the IAB node's MT's available resources based on the above resource reuse relationship.

[0021] In combination with the first aspect, in certain implementations of the first aspect, the indication range of the second indication information includes at least one of the following: available resources of the first resource determined by the semi-static resource configuration; a first set of resources to be indicated that has a resource reuse relationship with G cells and is determined by the designated G cells in F cells; a second set of resources to be indicated consisting of part of the resources in the first resource indicated by the second node or the host node; a third set of resources to be indicated consisting of all the resources in the first resource indicated by the second node or the host node.

[0022] With reference to the first aspect, in certain implementations of the first aspect, the second indication information includes identifiers of D carriers and / or identifiers of F cells.

[0023] In combination with the first aspect, in some implementations of the first aspect, the second indication information is downlink control information DCI.

[0024] In combination with the first aspect, in certain implementations of the first aspect, the downlink control information DCI further includes at least one of the following information: control resource set information, search space set information, indication delay information, and indication range information.

[0025] In a second aspect, the present application provides a relay device having the functionality to implement the method of the first aspect and any possible implementation thereof. The functionality may be implemented by hardware or by hardware executing corresponding software implementations. The hardware or software includes one or more units corresponding to the functionality described above.

[0026] In a third aspect, the present application provides a computer-readable storage medium, in which computer instructions are stored. When the computer instructions are executed on a computer, the computer executes the method in the first aspect or any possible implementation of the first aspect.

[0027] In a fourth aspect, the present application provides a chip including a processor, wherein the processor is configured to read and execute a computer program stored in a memory to perform the method of the first aspect or any possible implementation of the first aspect.

[0028] Optionally, the chip further includes a memory, the memory is connected to the processor via a circuit or wire, and the memory is used to store computer programs.

[0029] Further optionally, the chip also includes a communication interface.

[0030] In a fifth aspect, the present application also provides a computer program product, which includes computer program code. When the computer program code is run on a computer, the computer executes the method in the above-mentioned first aspect and any possible implementation thereof.

[0031] The dynamic resource indication method provided in this application can explicitly or implicitly indicate the availability of available resources for the MT of an IAB node, as well as the availability of DU soft resources of the IAB node, through dynamic resource signaling. In scenarios where the MT has multiple carriers and the DU has multiple cells, dynamic sharing of MT and DU resources of the IAB node can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is an architectural diagram of an IAB system applicable to an embodiment of the present application;

[0033] Figure 2 A simple example of an IAB system provided in an embodiment of the present application;

[0034] Figure 3 A schematic diagram of an access link and a backhaul link provided in an embodiment of the present application;

[0035] Figure 4 A schematic diagram of the structure of an IAB node provided in an embodiment of the present application;

[0036] Figure 5 A logical diagram of an MT and a DU provided in an embodiment of the present application;

[0037] Figure 6 A schematic diagram of another access link and backhaul link provided in an embodiment of the present application;

[0038] Figure 7 A method for configuring backhaul resources in an LTE relay system;

[0039] Figure 8 This is a schematic diagram of resource configuration in NR's IAB system;

[0040] Figure 9 A schematic diagram of the relationship between DU resources and MT resources in multiple cells provided in an embodiment of the present application;

[0041] Figure 10 A flowchart of a method for dynamically indicating resources provided in an embodiment of the present application;

[0042] Figure 11 An example of a situation in which an MT includes two carriers and a DU includes four cells is provided in an embodiment of the present application;

[0043] Figure 12 A schematic diagram illustrating the multiplexing or association relationship between the MT carrier and the DU cell provided in an embodiment of the present application;

[0044] Figure 13 An example of a method for deriving available / unavailable resources of each carrier of an MT in a semi-static resource configuration provided in an embodiment of the present application;

[0045] Figure 14 An example of a dynamic resource indication method for DU soft resources of an IAB node provided in an embodiment of the present application;

[0046] Figure 15 An example of an indication DCI including indication delay information provided in an embodiment of the present application;

[0047] Figure 16 An example of a dynamic resource indication method for MT resources of an IAB node provided in an embodiment of the present application;

[0048] Figure 17 A schematic diagram of a relay device 1700 provided in an embodiment of the present application; DETAILED DESCRIPTION

[0049] The technical solution in this application will be described below with reference to the accompanying drawings.

[0050] All node and message names in this application are for ease of description only. The names in actual networks may differ, and this application should not be construed as limiting the names of various nodes and messages. On the contrary, any names that have the same or similar functions as the nodes or messages used in this application are considered methods or equivalent replacements for this application and are within the scope of protection of this application. These are not further detailed below.

[0051] The communication systems involved in this application include but are not limited to: narrowband Internet of Things (NB-IoT) systems, wireless local access networks (WLAN) systems, long term evolution (LTE) systems, fifth generation mobile communications (5G) systems or communication systems after 5G, such as new radio (NR) systems, device to device (D2D) communication systems, etc.

[0052] In order to better understand the technical solution provided by the present application, the network architecture to which the present application is applicable is described below. The present application is applicable to a wireless communication system with a relay device. Relay devices include ordinary fixed relay nodes, such as IAB nodes, and also include mobile relay nodes, such as mobile IAB nodes, terminal equipment UE relays, etc. For the convenience of description, the present application takes the relay device as an IAB node as an example to describe the provided technical solution. It should be understood that in the present application, the IAB node can refer to any node or device with a relay function, and does not mean that the solution of the present application is only applicable to NR scenarios. In the present application, the use of IAB nodes and relay nodes, or relay devices should be understood to have the same meaning.

[0053] See also Figure 1 , Figure 1 FIG. 1 is an architectural diagram of an IAB system applicable to an embodiment of the present application. Figure 1As shown, an IAB system includes at least one base station 100, one or more terminal devices (terminal) 101 served by the base station 100, one or more relay nodes (taking IAB nodes as an example) 110, and one or more terminal devices 111 served by the IAB node 110. Generally, the base station 100 can be called a donor base station (donor next generation node B, DgNB), and the IAB node 110 is connected to the base station 100 via a wireless backhaul link 113. The donor base station is also referred to as a donor node, donor node, or donor base station in this application.

[0054] The base station 100 includes but is not limited to: evolved node base (eNB), baseband unit (BBU), evolved base station (eLTE), NR base station (next generation nodeB, gNB) and base stations after 5G communication system.

[0055] Terminal devices include but are not limited to: user equipment (UE), mobile station, access terminal, user unit, user station, mobile station, remote station, remote terminal, mobile device, terminal, wireless communication device, user agent, station (ST) in wireless local access network (WLAN), cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication function, computing device, other processing equipment connected to wireless modem, vehicle-mounted equipment, wearable device, mobile station in 5G network and terminal equipment in future evolved public land mobile network (PLMN) network, etc.

[0056] The IAB node is a specific name for a relay node in the 5G NR system and does not limit the solution of this application. It can be one of the above-mentioned base stations or terminal devices with forwarding functions, or it can be an independent device form. For example, the IAB node in this application can also be called a relay node (RN), a transmission and reception point (TRP), a relaying TRP, etc.

[0057] Figure 1 The illustrated IAB system may also include multiple other IAB nodes, such as IAB node 120 and IAB node 130. IAB node 120 is connected to IAB node 110 via wireless backhaul link 123 to access the network. IAB node 130 is connected to IAB node 110 via wireless backhaul link 133 to access the network. IAB node 120 serves one or more terminal devices 121, and IAB node 130 serves one or more terminal devices 131. Figure 1 In the embodiment, IAB node 110 and IAB node 120 are both connected to the network via wireless backhaul links. In this application, the wireless backhaul links are all viewed from the perspective of relay nodes. For example, wireless backhaul link 113 is the backhaul link of IAB node 110, and wireless backhaul link 123 is the backhaul link of IAB node 120. Figure 1 As shown, an IAB node, such as IAB node 120, can be connected to another IAB node 110 via a wireless backhaul link, such as 123, thereby connecting to the network. Moreover, the relay node can be connected to the network through multiple levels of wireless relay nodes. It should be understood that the use of IAB nodes in this application is only for descriptive purposes and does not mean that the solution of this application is only applicable to NR scenarios. In this application, IAB nodes can generally refer to any node or device with a relay function. In this application, the use of IAB nodes and relay nodes or relay devices should be understood to have the same meaning.

[0058] It should be understood that Figure 1 In the IAB system shown in the figure, one IAB node is connected to one upper node. However, in future relay systems, in order to improve the reliability of the wireless backhaul link, one IAB node, such as 120, can have multiple upper nodes providing services to the same IAB node at the same time. Figure 1IAB node 130 can also be connected to IAB node 120 via backhaul link 134. That is, IAB node 110 and IAB node 120 are both considered superior nodes of IAB node 130. The names of IAB nodes 110, 120, and 130 do not limit the scenarios or networks in which they are deployed and can be any other names, such as relay, RN, etc. The term "IAB node" is used in this application for convenience only. In this application, the term "IAB node" can generally refer to any node or device with relay functionality.

[0059] exist Figure 1 In the illustrated IAB system, wireless links 102, 112, 122, 132, 113, 123, 133, and 134 can be bidirectional links, including uplink and downlink transmission links. In particular, wireless backhaul links 113, 123, 133, and 134 can be used for an upper-level node to provide services to a lower-level node, such as upper-level node 100 providing wireless backhaul services to lower-level node 110. It should be understood that the uplink and downlink of the backhaul link can be separate, that is, the uplink and downlink are not transmitted through the same node. The downlink transmission refers to the transmission of information or data from an upper-level node, such as node 100, to a lower-level node, such as node 110, and the uplink transmission refers to the transmission of information or data from a lower-level node, such as node 110, to an upper-level node, such as node 100. The node is not limited to being a network node or a terminal device. For example, in a D2D scenario, a terminal device can act as a relay node to serve other terminal devices. In some scenarios, the wireless backhaul link can also be an access link. 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 an access link for the node 100. It should be understood that the upper-level node can be a base station or a relay node, and the lower-level node can be a relay node or a terminal device with relay function. For example, in a D2D scenario, the lower-level node can be a terminal device.

[0060] See also Figure 2 , Figure 2 is a simple example of an IAB system. Figure 2 The IAB system shown includes a donor base station, IAB node 1, IAB node 2, and terminal devices UE1 and UE2. The link between the donor base station and IAB node 1, and the link between IAB node 1 and IAB node 2 are backhaul links. The link between terminal device UE1 and the donor base station, and the link between terminal device UE2 and IAB node 1, are access links.

[0061] In addition, this application also involves the specific meanings of the following basic terms or concepts.

[0062] Access link: The link between a terminal device (UE) and an IAB node (IAB node) or IAB donor node (IAB donor). Alternatively, the access link includes the wireless link used by a node to communicate with its subordinate nodes. Access links include uplink access links and downlink access links. The uplink access link is also called the uplink transmission of the access link, and the downlink access link is also called the downlink transmission of the access link.

[0063] Backhaul link: The link between an IAB node and an IAB child node or an IAB parent node. The backhaul link includes the link for downlink transmission with the IAB child node or the IAB parent node, and the link for uplink transmission with the IAB child node or the IAB parent node. The data transmission from the IAB node to the IAB parent node, or the uplink transmission received from the IAB child node is called the uplink transmission of the backhaul link. The data transmission received by the IAB node from 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 the terminal equipment UE and the IAB node, the backhaul link between the IAB node and the IAB parent node is also called the upper backhaul link (parent BH), and the backhaul link between the IAB node and the IAB child node is called the lower backhaul link (child BH). In some cases, the lower backhaul link and access link of the IAB node are collectively referred to as the access link, that is, the lower node is regarded as a terminal device of the upper node. See Figure 3 , Figure 3 This is a schematic diagram of an access link and a backhaul link.

[0064] For further information, see Figure 4 , Figure 4 This is a schematic diagram of the IAB node structure. Figure 4As shown, the terminal (mobile-termination, MT) function is defined as a component similar to UE. In IAB, MT is called a function (or module) residing on the IAB node. Since 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 MT. The distributed unit (distributed unit, DU) function is defined as a component similar to a base station. In the IAB system, DU is called a function (or module) residing on the IAB node. Since 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 access to lower-level nodes and terminal devices through DU. It should be noted that the terminal function is referred to as the terminal unit in the following text, and its use should be understood to have the same meaning as the terminal function. The terminal unit specifically refers to a function and / or module residing on the IAB node, which is used to distinguish it from the terminal device UE that can serve as a lower-level node in this application.

[0065] The MT and DU modules of the IAB node both have complete transceiver units and an interface between them. However, it should be noted that the MT and DU are logical modules. In practice, they can share some submodules, such as the transceiver antennas, baseband processing units, etc. Figure 5 As shown. Furthermore, the MT of a D IAB node may have multiple subunits, which may include multiple carriers, multiple panels, or multiple cells. The DU of an IAB node may also have multiple subunits, which may include multiple carriers, multiple panels, or multiple cells. For example, a DU may have multiple cells, and an MT may have multiple carriers. The subunits of the MT and the subunits of the DU have certain associations or multiplexing relationships.

[0066] Furthermore, the IAB node communicates with the upper node through the MT, and the function of the MT is similar to that of an ordinary UE. Therefore, the MT of the IAB node (hereinafter referred to as the IAB MT) may use carrier aggregation (CA) to communicate with the upper node. For example, the MT may have multiple component carriers (CCs). In addition, the DU of the IAB node (hereinafter referred to as the IAB DU) may also have multiple submodules. For example, the DU may have multiple cells. Two possible cases are given as examples: (1) the DU has panels or sectors with multiple orientations, and different panels are different cells; (2) the DU uses carrier aggregation, and different carriers are different cells.

[0067] Combine Figure 3The link between the MT and the upper node is called the parent BH link, the link between the DU and the lower IAB node is called the child BH link, and the link between the DU and the lower UE is called the access link. The upper backhaul link includes the upper backhaul uplink (UL) and the upper backhaul downlink (DL), the lower backhaul link includes the lower backhaul uplink (UL) and the lower backhaul downlink (DL), and the access link includes the access uplink (UL) and the access downlink (DL). Figure 6 In some cases, the lower-level backhaul link is also called an access link.

[0068] The following combination Figure 7 This section describes how to configure backhaul resources in an LTE relay system.

[0069] In an LTE relay system, a donor node (or host node) semi-statically configures backhaul resources for a relay node RN. Figure 7 This figure shows a specific example of downlink backhaul resource configuration in an LTE relay system. In LTE, the donor node allocates backhaul link resources to the relay node in units of subframes (1ms), with an allocation period of one radio frame (10ms). Specifically, the donor base station designates some subframes as backhaul link subframes through radio resource control (RRC) signaling. The number and position of backhaul link subframes can be reconfigured, but RRC signaling reconfiguration takes a long time.

[0070] Taking downlink transmission as an example, for a relay node in LTE, when a subframe is configured as a backhaul link subframe, the relay node needs to monitor the relay physical downlink control channel (R-PDCCH) and / or receive the physical downlink share channel (PDSCH) in this subframe, so it cannot send on the access link. Figure 7 As shown, subframes 2, 4, and 6 are configured as backhaul link subframes, and subframes 2, 4, and 6 on the access link at the corresponding locations are unavailable. Therefore, the method for configuring backhaul resources in LTE is semi-static time division multiplexing (TDM) resource allocation.

[0071] The following combination Figure 8 This article introduces the resource configuration method in NR's IAB system.

[0072] See also Figure 8 , Figure 8 This is a schematic diagram of resource configuration in the NR IAB system (hereinafter referred to as NR IAB). Among them, the MT resources of the IAB node can be configured as uplink (U), downlink (D), and flexible (F). These three types are also supported by terminal devices in the prior art, so MT resources can use existing signaling instructions. Unlike terminal devices, the IAB node MT can support more D / U / F sequences. For example: the terminal device only supports the sequence of D--F--U; the MT can support the sequence of U--F--D or U--D, etc.

[0073] The DU resources of an IAB node can be configured as uplink (U), downlink (D), and flexible (F). Furthermore, these uplink, downlink, and flexible DU resources can be further divided into hard (H) and soft (S) resources. Hard resources are always available, while soft resources are dependent on the instructions of a higher-level node (e.g., a donor node). Furthermore, a DU may also include null (N) resources.

[0074] As can be seen above, the availability of some resources (i.e., soft resources) on the DU of the IAB node in NR depends on the instructions of the upper node. This requires a combination of semi-static configuration and dynamic instructions to indicate DU resources. In addition, whether the availability of MT available resources obtained based on semi-static resource configuration is modified to unavailable also depends on the instructions of the upper node. This resource allocation method is significantly different from the resource allocation method in the LTE system.

[0075] Combine Figure 3 and Figure 8 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, or the DU of the IAB node is connected to the UE. After semi-static resource configuration (for example, through RRC signaling and / or F1-AP interface signaling), the IAB node can obtain the resource configuration of its MT resources and DU resources respectively. For example, it can include the transmission direction (U / D / F) of the MT resources and the DU resources, the location of the available / unavailable resources of the MT, the attributes of the DU resources (soft / hard), the time domain location of the unavailable resources (Null) of the DU, etc. It should be understood that the above-mentioned related configurations can be obtained through explicit signaling or implicitly.

[0076] Specifically, the MT of an IAB node has three types of resources, while the DU of an IAB node has seven types of resources. When combined in pairs, the possible behaviors of the MT and its corresponding DU of an IAB node are shown in the following two tables. Table 1 shows the resource configuration of the MT and DU under various possible resource type combinations in a time division multiplexing (TDM) scenario. Table 2 shows the resource configuration of the MT and DU under various possible resource type combinations in a spatial division multiplexing (SDM) scenario.

[0077] Table 1

[0078]

[0079] Table 2

[0080]

[0081]

[0082] In Tables 1 and 2 above, the meanings of the symbols are as follows:

[0083] "MT:Tx": MT should transmit after being scheduled;

[0084] "DU:Tx": DU can be transmitted;

[0085] “MT:Rx”: MT is capable of receiving (if there is a signal to be received);

[0086] "DU:Rx": DU can schedule uplink transmission of lower-level nodes;

[0087] "MT:Tx / Rx": The MT should transmit or receive after being scheduled, but transmission and reception do not occur at the same time;

[0088] "DU:Tx / Rx": DU can transmit or receive transmissions from lower-level nodes, but transmission and reception do not occur simultaneously;

[0089] "IA": DU resources are explicitly or implicitly indicated as available;

[0090] "INA": DU resources are explicitly or implicitly indicated as unavailable;

[0091] "MT:NULL": MT does not send and does not need to have receiving capability;

[0092] "DU:NULL": DU does not send and does not receive transmissions from lower-level nodes.

[0093] The IAB node and its upper node should determine or deduce the availability of MT resources based on the resource configuration of DU. The principle of deduction is that the transmission of MT does not affect the use of DU's hard resources. Figure 8 As can be seen from Table 1 above, in the TDM case, for the IAB node, the MT resources (e.g., MT resources corresponding to the 1st, 6th, 7th, and 8th time slots) corresponding to the DU hard resources (e.g., DU resources corresponding to the 1st, 6th, 7th, and 8th time slots) are unavailable.

[0094] In the case of a DU with multiple cells, different cells of the DU may have different resource attributes (hard / soft). For example, assume that there are two cells in the DU, namely cell0 and cell1, where cell0 shares the antenna panel with the MT or faces the same direction as the antenna panel of the MT. Consider five time domain resources (time slots), where time slot 0 is the downlink resource of the MT and the downlink soft resource of the two cells, time slots 1 to 3 are unavailable to the MT, time slots 1 and 2 are the downlink hard resources of the two cells, time slot 3 is the uplink and downlink flexible hard resource of the two cells, time slot 4 is the uplink resource of the MT, the soft resource of cell0, and the hard resource of cell1, as shown in the following example: Figure 9 It should be noted that Figure 9 The letter "U" represents the uplink resource type, the letter "D" represents the downlink resource type, the letter "F" represents the flexible resource type, the letter "S" represents the soft resource attribute, and the letter "H" represents the hard resource attribute. The reason why the two DU cells can have different H / S types in time slot 4 is that the transmission direction of cell 1 in this time slot is opposite to that of the MT. Simultaneous transmission (sending) does not violate the half-duplex constraint (i.e., the MT and DU cannot transmit and receive at the same time). Furthermore, the MT and cell #1 faceplates are in opposite directions, so the mutual influence between the two is minimal.

[0095] In order to dynamically coordinate resources between the access link and the backhaul link, NR IAB will use two-level resource indication. Specifically, two-level resource indication means that the upper node configures resources for the DU of the IAB node in an explicit or implicit manner, and the resource attributes include at least soft and hard. Among them, hard resources represent resources that are always available to the DU of the IAB node, while the availability status of soft resources depends on the indication of the upper node. In addition, the upper node also configures resources for the MT of the IAB node in an explicit or implicit manner. Whether the availability status of the MT's available resources is modified also depends on the indication of the upper node.

[0096] After the semi-static resource configuration, the IAB node can obtain the resource configuration of its MT resources and DU resources respectively. For example, it can include the transmission direction (U / D / F) of MT resources and DU resources, the location of available / unavailable resources of MT, the attributes of DU resources (soft / hard), the time domain location of unavailable resources (Null) of DU, etc. In general, the resource configuration of MT is transmitted through air interface signaling such as RRC, while the resource configuration of DU is transmitted through interface messages such as F1-AP. After the semi-static configuration is completed, the upper node can indicate the availability of its soft resources to the IAB node through dynamic signaling, such as downlink control information (DCI). In this application, this DCI is referred to as indication DCI. The indication DCI can be based on a dedicated DCI format, or it can be an enhancement of the existing DCI or a reuse of the existing DCI.

[0097] Dynamic indications can be divided into two categories: explicit indications and implicit indications:

[0098] Implicit indication: The upper node indicates to the IAB node whether the MT resources are released (ie, unavailable). The IAB node derives the availability of its own DU soft resources based on the upper node's indication of the MT resources.

[0099] Explicit indication: The upper node directly indicates the availability of soft resources of the IAB node DU.

[0100] In addition to explicitly or implicitly indicating the availability of soft resources, the DCI may also indicate other contents, such as the transmission direction of DU flexible resources.

[0101] In an IAB system, where a MT has multiple carriers and a DU has multiple cells, embodiments of the present application provide a method and apparatus for dynamically indicating resource configurations for multiple carriers on the MT and multiple cells on the DU. The method and apparatus are based on the same technical concept. Since the principles of the method and apparatus are similar, the implementation of the apparatus and method can refer to each other, and any repetitions will not be repeated.

[0102] The dynamic resource indication method provided in the embodiment of the present application can be applied to Figure 1 In the communication system shown, it should be understood that Figure 1 This is only an exemplary description and does not specifically limit the number and type of terminal devices, network devices, and relay nodes included in the communication system.

[0103] It should be understood that "at least one" in the embodiments of the present application refers to one or more, and "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can represent: a, b, c, a and b, a and c, b and c, or a, b, c, where a, b, c can be single or multiple.

[0104] In addition, it should be understood that in the description of this application, words such as "first", "second", and "third" are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order.

[0105] The following describes in detail the method for dynamically indicating MT resources and DU resources of an IAB node provided in an embodiment of the present application with reference to the accompanying drawings.

[0106] For ease of description, the first node involved in the following embodiments is an IAB node, the second node is the upper node of the IAB node, and the third node is the lower node of the IAB node; the first resource is the MT resource of the IAB node, and the second resource is the DU resource of the IAB node. It should be understood that the use of the IAB node in this application is only for descriptive purposes and does not mean that the dynamic resource indication method provided in this application is only applicable to NR scenarios. In this application, the IAB node can generally refer to any node or device with a relay function. The use of the IAB node and the relay node or relay device in this application should be understood to have the same meaning.

[0107] See also Figure 10 , Figure 10 A flowchart of a method for dynamically indicating resources provided in an embodiment of the present application, the method comprising:

[0108] S1001. A second node or a donor node sends first indication information to a first node. The first indication information is used to indicate a semi-static resource configuration of first resources corresponding to D carriers and second resources corresponding to F cells in the first node.

[0109] Specifically, the first node may be an IAB node, and the second node may be a superior node of the IAB node. In addition to the first and second nodes, embodiments of the present application may also include a third node, which is a subordinate node of the IAB node. The first node may be a relay device, including a common fixed relay node, such as an IAB node, or a mobile relay node, such as a mobile IAB node or a UE relay. The second node may be a common network device, such as a base station, or a relay device. The third node may be a relay device or a terminal device.

[0110] Furthermore, the first resource is a transmission resource for communication between the first node and the second node, ie, an MT resource of the IAB node; the second resource is a transmission resource for communication between the first node and the third node, ie, a DU resource of the IAB node.

[0111] In general, the MT of the IAB node may have multiple subunits, and the multiple subunits may be multiple carriers, multiple panels, multiple cells, etc.; the DU of the IAB node may also have multiple subunits, and the multiple subunits may also be multiple carriers, multiple panels, multiple cells, etc. In an embodiment of the present application, taking the MT of the IAB node having (or being configured with) multiple carriers (CCs) and the DU having (or being configured with) multiple cells as an example, a dynamic indication method of resources proposed in the present application is described. It is assumed that the MT of the IAB node has D carriers, where D ≥ 1; the DU of the IAB node has F cells, where F ≥ 1. It should be understood that the embodiment of the present application is only described by taking carriers or cells as examples, and is not limited to carriers or cells as units. In a specific implementation, other submodules or subunits may also be used as units, such as sectors, antenna panels, etc. Exemplarily, when sectors are used as units, the DU of the IAB node may have K sectors, where K ≥ 2.

[0112] It should be understood that when the UE or MT uses carrier aggregation, communication protocols such as LTE and NR generally use serving cells to identify or describe component carriers, and different serving cells have different serving cell IDs. In this application, in order to distinguish it from the DU cell, the component carrier is directly used to describe the serving cell of the MT, that is, the carrier of the MT in this application corresponds to the serving cell of the MT in the protocol.

[0113] Figure 11 An example is given in which the MT of an IAB node has two carriers CC1 and CC2, and the DU has four cells cell1, cell2, cell3, and cell4, i.e., D = 2 and F = 4. The IAB node in the example has two (two groups of) antenna panels panel 1 and panel 2 with different orientations.

[0114] like Figure 11 As shown, the DU of the IAB node can communicate with the lower-level node through two cells using different carriers (denoted as CC3 and CC4) on each (group) antenna panel. That is, the DU of the IAB node operates two cells on each antenna panel. For example, the cells cell1 and cell2 are operated on the antenna panel panel 1, and the cells cell3 and cell4 are operated on the antenna panel panel 2. Therefore, Figure 11 The DU in the figure has four cells, cell1, cell2, cell3, and cell4. On the other hand, the MT of the IAB node uses one (group) antenna panel panel 1 to communicate with the upper node through two carriers (carrier aggregation) CC1 and CC2. The two carriers CC1 and CC2 of the MT are the same as the two carriers CC3 and CC4 of the DU, or in other words, the two carriers CC1 and CC2 of the MT overlap with the two carriers CC3 and CC4 of the DU respectively. Specifically, the carrier CC1 used by the MT overlaps with the frequency bands of the cell cell 1 on which the DU operates on panel 1 and the cell cell 3 on which the DU operates on panel 2, while the carrier CC 2 used by the MT overlaps with the frequency bands of the cell cell 2 on which the DU operates on panel 1 and the cell cell 4 on which the DU operates on panel 2. It should be understood that frequency band overlap may refer to a complete overlap of the entire frequency band or a partial overlap of the frequency band.

[0115] Furthermore, multiple (eg, D) carriers of MT and multiple (eg, F) cells of DU may have different resource multiplexing or association relationships in transmission. Figure 11 For example, the MT has two carriers CC1 and CC2, and the DU has four cells cell1, cell2, cell3, and cell4. The resource reuse or association relationship between each carrier of the MT and each cell of the DU may be as follows: Figure 12 As shown, including but not limited to:

[0116] Time Division Multiplexing (TDM): The MT's carrier and the DU's cell cannot transmit simultaneously. For example, the MT's carrier CC1 and the DU's cell 1 use the same carrier frequency and are located on the same antenna panel. Therefore, their resource multiplexing or association relationship is TDM. That is, when carrier CC1 is transmitting, cell 1 cannot transmit in any form, and vice versa. Similarly, the multiplexing relationship between carrier CC2 and cell 2 is also TDM.

[0117] (Half-duplex) Frequency Division Multiplexing (FDM): The MT's carrier and the DU's cell can receive or transmit simultaneously, but not one at a time. For example, carrier CC1 and cell cell2 use the same antenna panel but have different carrier frequencies. Therefore, they can receive or transmit simultaneously, a practice known as (half-duplex) FDM.

[0118] (Half-duplex) Space Division Multiplexing (SDM): The MT's carrier and the DU's cell can receive or transmit simultaneously, but not one receiving and one transmitting at a time. For example, carrier CC1 and cell cell3 share the same carrier frequency band but use different antenna panels. Therefore, they can receive or transmit simultaneously, a practice known as (half-duplex) SDM.

[0119] Full duplex (FD): The MT's carrier and the DU's cell do not affect each other's transmission and reception. For example, carrier CC1 and cell cell4 use different frequency bands and utilize different antenna panels. Therefore, they have sufficient isolation and can transmit and receive simultaneously without affecting each other. The MT's carrier and the DU's cell can be defined as having full-duplex resource multiplexing or association, or as having no resource multiplexing or association between the MT's carrier and the DU's cell. Full duplex can be either same-frequency full duplex or different-frequency full duplex. Different-frequency full duplex may also be referred to as full-duplex FDM.

[0120] In addition, the following resource reuse or association relationships may exist between each carrier of the MT and each cell of the DU:

[0121] Dynamic (adaptive) SDM / FDM: The DU cell determines the configuration or scheme for half-duplex simultaneous transmission / simultaneous reception based on the MT's transmission situation. For example, when the MT is performing downlink transmission, the DU of the IAB node can only select some terminal devices for uplink transmission; when the MT is not transmitting, the DU of the IAB node can select more terminal devices for uplink transmission. Taking the simultaneous reception of the MT and DU as an example, different terminal devices may cause different levels of interference to the MT's reception. When the MT is transmitting, the DU should select terminal devices that have no impact on the MT's transmission or whose impact can be controlled for uplink transmission.

[0122] Dynamic (adaptive) full-duplex: The DU cell determines the full-duplex transmission or reception configuration or scheme based on the MT's transmission status. For example, when the MT is performing downlink transmission, the DU of the IAB node can only select some terminal devices for downlink transmission; when the MT is not transmitting, the DU can select more terminal devices for downlink transmission.

[0123] In one possible implementation, each carrier of the MT and each cell of the DU may have a default resource multiplexing or association relationship. For example, the default resource multiplexing or association relationship between each carrier of the MT and each cell of the DU is time division multiplexing (TDM). In another possible implementation, the IAB node may modify the default resource multiplexing or association relationship between all or some of the MT carriers and DU cells by reporting information to the superior node / host node. For example, the IAB node reports that the resource multiplexing or association relationship between some MT carriers and DU cells is full-duplex, while the resource multiplexing or association relationship between other MT carriers and DU cells remains the default time division multiplexing (TDM).

[0124] At present, the resource configuration mode of NR is semi-static resource configuration plus dynamic resource indication. Before performing dynamic resource indication, the second node sends first indication information to the first node to indicate the semi-static resource configuration of the MT resources and DU resources of the first node.

[0125] S1002. The first node determines, according to first indication information, a semi-static resource configuration of first resources corresponding to D carriers and second resources corresponding to F cells.

[0126] Specifically, the first node receives the first indication information and determines the semi-static resource configuration of the MT resource and the DU resource according to the first indication information, including:

[0127] MT Resource Configuration: MT resources are semi-statically configured similarly to terminal devices. The host node and / or the parent node of the IAB node can configure the three resource types (D, U, and F) of the MT resources on a per-carrier basis using broadcast and unicast RRC signaling. It should be understood that the parent node of the IAB node can also modify the resource type of the IAB node's MT via downlink control information (DCI).

[0128] DU Resource Configuration: The host node or IAB node's parent node can first configure the DU with the D / U / F resource type. The host node or IAB node's parent node can then further specify the DU's hard / soft attributes and the time domain location of unavailable resources (NA). The host node or IAB node's parent node typically configures DU resources through interface messages.

[0129] In one possible implementation, the host node or the IAB node's superior node simultaneously indicates the hard / soft attribute of the DU resource and the time domain location of the unavailable resource (NA) through interface signaling such as F1-AP, that is, the DU's unavailable resource is considered an attribute of the DU resource. In another possible implementation, the host node or the IAB node's superior node indicates the hard / soft attribute of the resource and the time domain location of the unavailable resource (NA) through independent signaling.

[0130] Through semi-static resource configuration, the IAB node obtains the three resource types (D / U / F) of the MT, as well as the hard / soft attributes of the DU resources and the time domain location of the unavailable resources (NA). To ensure that transmission between the IAB node's superior node and the IAB node's MT does not affect the IAB node's DU's use of its hard resources, the IAB node and its superior node need to derive the MT's available / unavailable resources based on the resource reuse or association relationship between the MT's various carriers and the DU's various cells.

[0131] Specifically, the method for deriving available / unavailable resources of each carrier of the MT of the IAB node is as follows:

[0132] When a carrier of MT is associated with a cell of DU, if the resource multiplexing relationship between the MT carrier and the DU cell is time division multiplexing TDM, then the MT resources that overlap with the DU hard resources in time domain are all unavailable resources; if the multiplexing relationship between the MT carrier and the DU cell is half-duplex frequency division multiplexing (FDM) or half-duplex space division multiplexing (SDM), then the MT resources that overlap with the DU hard resources in time domain and have the same transmission direction are unavailable resources. For example, Figure 9 As shown, MT includes a carrier CC1, DU includes a cell cell0, and the resource multiplexing relationship between the MT carrier and the DU cell is time division multiplexing TDM. Therefore, MT resources that overlap with DU hard resources in the time domain are all unavailable resources.

[0133] It should be noted that the available resources of MT are resources that do not affect the transmission of DU hard resources. Due to the timing deviation between MT and DU and the switching interval between MT and DU resources, some MT resources that do not overlap with DU hard resources may also affect the transmission of DU hard resources, and therefore should also be regarded as unavailable resources of MT.

[0134] When a carrier of MT is associated with multiple cells of DU, the derivation of available / unavailable resources of the MT carrier needs to rely on the resource configuration of the multiple DU cells associated with it. For example, the available / unavailable resources of the MT carrier are jointly derived through the resource types and resource attributes of the multiple cells of DU. The principle of derivation is that the transmission between the MT carrier of the IAB node and the superior node of the IAB node does not affect the use of hard resources in the DU cell of any IAB node. Specifically, the available resources of the MT carrier are the intersection of the available resources of the MT carrier derived by each DU cell associated with it. In other words, the unavailable resources of the MT carrier are the union of the unavailable resources of the MT carrier derived by each DU cell associated with it.

[0135] It should be noted that in the application scenario where the MT has multiple carriers and the DU has multiple cells, in the semi-static resource configuration, the available / unavailable resources of each carrier of the MT can be derived carrier by carrier according to the above method. Figure 13 As shown, the MT includes two carriers, CC1 and CC2, and the DU includes four cells, cell1, cell2, cell3, and cell4. MT carrier CC1 is associated with DU cells, cell1 and cell2. Based on the resource configuration of DU cell1, the available resources of MT carrier CC1 are deduced to be timeslots 1, 2, and 3; based on the resource configuration of DU cell2, the available resources of MT carrier CC1 are deduced to be timeslots 0, 1, and 2. Taking the intersection of the two available resource sets, we can see that the available resources of MT carrier CC1 are timeslots 1 and 2. In other words, the unavailable resources of the MT carrier are timeslots 0, 3, and 4.

[0136] It should be understood that the above derivation process may have a process clearly defined by the protocol, or may be left to the implementation of the IAB node and its upper-level node.

[0137] It should be noted that the available resources of the MT obtained according to the semi-static resource configuration refer to resources that may be used for backhaul link transmission. In actual process, whether the available resources are used for backhaul link transmission depends on the instruction of the upper node.

[0138] S1003. The second node sends second indication information to the first node, where the second indication information is used to indicate the available status of the available resources of the first resources corresponding to D carriers and / or the available status of the dynamic resources of the second resources corresponding to F cells in the first node.

[0139] The resource configuration method of NR IAB is semi-static resource configuration plus dynamic resource indication. After the semi-static configuration of the MT resources and DU resources of the IAB node is obtained according to the semi-static resource configuration, the superior node of the IAB node can explicitly or implicitly indicate the availability of the DU soft resources of the IAB node through dynamic signaling, or explicitly or implicitly indicate whether the available resources of the MT of the IAB node will be released. In this application, the superior node of the IAB node releases the available resources of the MT, which means that the superior node indicates that the available resources will not be used by the backhaul link. It should be noted that the available resources of the MT obtained according to the semi-static resource configuration are resources that may be used as a backhaul link. Whether the actual available resources will be used for backhaul link transmission, that is, whether the available status of the available resources of the MT will be modified (or rewritten, or re-indicated, or overwritten), depends on the indication of the superior node.

[0140] Specifically, the availability status of the available resources of the first resource may refer to whether the IAB node's superior node explicitly or implicitly indicates whether the available resources of the MT of the IAB node will be released, that is, whether the availability status of the MT's available resources obtained by semi-static resource configuration may be modified (or rewritten, or re-indicated, or overwritten) by the superior node. The superior node of the IAB node modifies the availability of the available resources of the first resource corresponding to D carriers. Generally speaking, it can only modify existing available resources to unavailable, and cannot modify existing unavailable resources to available. Whether the availability status of the MT's available resources is modified by the superior node depends on the second indication information of the superior node. The availability status of the dynamic resource of the second resource may refer to the availability of the IAB node's DU soft resources, that is, the superior node of the IAB node explicitly or implicitly indicates the availability of the IAB node's DU soft resources. When the superior node indicates that the DU soft resources are unavailable, the IAB node does not use the corresponding resources to communicate with the subordinate IAB node or UE.

[0141] Furthermore, the above dynamic resource indication method is described by taking the upper node of the IAB node indicating the DU soft resource of the IAB node as an example. Figure 14 As shown in FIG, if the second indication information indicates that the dynamic resource of the second resource of a cell among the F cells of the IAB node DU is available (solid line in the figure), the first node can use the corresponding resource to communicate with the third node. If the second indication information indicates that the dynamic resource of the second resource of a cell among the F cells of the DU is unavailable (dashed line in the figure), the first node cannot use the corresponding resource to communicate with the third node.

[0142] In the embodiment of the present application, the second indication information may be sent via dynamic signaling, such as downlink control information (DCI).

[0143] For the convenience of description, the second indication information for dynamic resource indication sent by the second node is referred to as indication DCI below. The indication DCI may adopt a dedicated DCI format, or may be obtained by adding or modifying fields in an existing DCI format.

[0144] The donor node or the upper node of the IAB node may configure the relevant information indicating the DCI for the IAB node through radio resource control (RRC) signaling. The relevant information indicating the DCI may include at least one of the following:

[0145] (1) Control resource set (CORESET) information: the same or similar to the existing control resource set CORESET configuration;

[0146] (2) Search space set information: Contains configuration information of the search space indicating the DCI, which is the same as or similar to the usual search space set configuration, including the CORESET associated with the search space, the time domain information of the search space (period, offset, duration, the starting symbol of the search space in the time slot, etc.), the physical downlink control channel (PDCCH) candidate set information, DCI format information, aggregation level, etc.

[0147] (3) Indication delay information: The indication delay is the time difference between the time when the MT of the IAB node receives the physical downlink control channel PDCCH and the time when the corresponding DCI indication starts. This delay may also be indicated by the DCI.

[0148] (4) Indication range information: indicates the time domain range of DCI application.

[0149] For example, Figure 15 The figure shows an example of an indication DCI including indication delay information. The indication delay can be the time from the start symbol of the indication DCI (corresponding physical downlink control channel PDCCH or CORESET) to the start position of the indication range, or the time from the end symbol of the indication DCI (corresponding PDCCH or CORESET) to the start position of the indication range.

[0150] S1004. The first node determines, according to the second indication information, an available status of available resources of the first resources corresponding to the D carriers and / or an available status of dynamic resources of the second resources corresponding to the F cells.

[0151] Specifically, the first node receives the second indication information and determines the dynamic resource configuration of the MT resource and the DU resource according to the second indication information, including:

[0152] (1) determining whether the available status of available resources of each of the D carriers of the MT of the IAB node is modified by the upper node of the IAB node;

[0153] (2) Determine the availability status of the soft resources of each of the F cells of the DU of the IAB node, that is, whether the soft resources of the DU will be used by the backhaul link or the access link.

[0154] The above embodiment provides detailed designs for explicitly indicating the availability status of the IAB node's MT's available resources and the availability status of its DU's soft resources, in the case of multi-carrier MTs and multi-cell DUs. The following details a solution in which the IAB node's superior node only explicitly indicates the availability status of the IAB node's MT's available resources, while the IAB node implicitly determines the availability status of its DU's soft resources based on this indication. This also provides detailed designs for a solution in which the IAB node's superior node only explicitly indicates the availability status of DU's soft resources, while the IAB node implicitly determines the availability status of its MT's available resources based on this indication.

[0155] In one possible implementation, in the case of multi-carrier MTs and multi-cell DUs, the IAB node's superior node may only explicitly indicate the availability status of the IAB node's MT's available resources, and the IAB node may implicitly determine the availability status of its DU soft resources based on this indication. Specifically, the IAB node's superior node indicates whether the availability of the available resources determined by the IAB node's MT after semi-static configuration has been modified. The IAB node then derives the availability of its own DU's soft resources based on the superior node's indication of the MT's available resources (hereinafter referred to as the MT indication). Specifically, for a DU cell, the availability status of its soft resources should be determined based on the dynamic resource indication results of its associated multiple MT carriers. Specifically, the IAB node determines whether to use the soft resources obtained by the DU through semi-static resource configuration to communicate with a subordinate IAB node or UE. When determining the availability status of a DU's soft resources, it is necessary to consider the resource multiplexing or association between each MT carrier and each DU cell.

[0156] It should be noted that MT indication can be performed on a carrier-by-carrier basis. Specifically, the IAB node's superior node can indicate the availability of each time domain resource of different carriers to the MT (whether the available status of the available resource has been modified to unavailable) through different DCI fields, or the IAB node's superior node can separately indicate the availability of each time domain resource of different carriers to the MT (whether the available status of the available resource has been modified to unavailable). After receiving the MT indication, the MT of the IAB node can determine the time domain and frequency domain resources (carrier level) with which the superior node communicates.

[0157] See also Figure 16 For example, consider a MT with two carriers, CC1 and CC2, and consider the 10 MT resources within the indication range (assuming time slots 0 to 9). Based on the semi-static resource configuration, the MT's available resources on carrier CC1 are time slots {0, 1, 2, 7, 8, 9}, while the available resources on carrier CC2 are time slots {0, 1, 2, 3, 8, 9}. Therefore, the upper node can indicate on a carrier-by-carrier basis whether the availability status of the MT's available time slots has been modified.

[0158] In a possible implementation, the physical downlink channel PDCCH carrying the indication DCI is located on a carrier of the MT. In a possible implementation, the MT may also receive the indication DCI through different carriers.

[0159] For the unavailable resources derived by the semi-static resource configuration of the MT, the upper node does not indicate it, or the upper node indicates it as released, or the IAB node ignores the instruction of the upper node.

[0160] In a possible implementation, the upper node may also divide the carrier groups into the available states of the available resources of the MT. Specifically, the upper node simultaneously indicates the availability of the available resources of the carrier group (multiple carriers) of the MT. When the upper node indicates that a certain time domain resource of the MT is available / unavailable, the time domain resources corresponding to the multiple carriers in the carrier group are all indicated as available / unavailable. Figure 16 For example, for time slots {0, 1, 2, 8, 9}, the upper node jointly indicates whether the available status of the available resources of carriers CC1 and CC2 will be modified, that is, the resources of carriers CC1 and CC2 can only be simultaneously indicated as whether the available status of their available resources will be modified. For time slot 3, carrier CC1 is semi-statically configured as an unavailable resource, so the indication of the upper node only applies to carrier CC2. Similarly, for time slot 7, the indication of the upper node only applies to carrier CC1. In other words, for the unavailable resources derived in the MT through semi-static resource configuration, the IAB node can ignore the indication of its upper node. Indications based on carrier groups can save the overhead of indicating DCI, but the resource multiplexing flexibility of the IAB node for MT resources and DU resources is insufficient.

[0161] It should be noted that the indication DCI may have an indication range, and the resources indicated by the upper node of the IAB node should be within the indication range. Furthermore, the IAB node needs to determine the specific resource set indicated by the indication DCI within the indication range.

[0162] In a possible implementation, the indicated resources of the upper node (or the resources to be indicated of the IAB node MT) are the available resources of all MTs within the indication range, wherein the available resources of the MT are obtained through semi-static resource configuration. Figure 10 The method given in step S1001 in the embodiment is the same.

[0163] In a possible implementation, the indication resources of the upper node (or the resources to be indicated of the IAB node MT) can be determined by a specific DU cell set. For example, assuming that a specific DU cell in the specific DU cell set has a TDM resource multiplexing relationship with the carrier of the MT, the resources to be indicated of the MT include the MT resources corresponding to the soft resources of the specific DU cell, or include the soft resources of the specific DU cell and the MT resources corresponding to the unavailable (NA) resources. When the specific DU cell set includes multiple specific DU cells, the indication resources of the upper node may include the intersection or union of the resources to be indicated of the MT determined by the multiple specific DU cells. Figure 10 The difference of the above embodiment is that if the MT in the IAB node has D carriers, the DU has F cells, and the D carriers and the F cells have resource multiplexing or association relationships, then the resource set to be indicated for the MT corresponding to the D carriers is determined by the DU resources corresponding to the F cells associated therewith, and in this implementation, the resource set to be indicated for the MT associated therewith can be determined by the DU resources corresponding to specific G cells among the F cells, where G <K。

[0164] In one possible implementation, the indicated resources of the upper node (or the resources to be indicated of the IAB node MT) are directly indicated by the upper node or the donor node. This implementation is usually applied to multi-connection scenarios.

[0165] In a possible implementation, the indicated resources of the upper-level node (or the resources to be indicated of the IAB node MT) are all resources of the IAB node MT within the indication range.

[0166] Furthermore, in some cases, the MT resource indicated by the indication DCI sent by the upper node is an unavailable resource of the MT of the IAB node (determined by semi-static configuration). In this case, the MT may ignore the corresponding field of the indication DCI, or the MT expects the indication DCI to always indicate that the unavailable resource is unavailable. For example, the upper node indicates the available status of a time slot of the MT, and the MT time slot may contain several unavailable symbols. In this case, even if the upper node indicates that the time slot is available, the unavailable symbols in the original time slot remain unavailable.

[0167] In addition, the present application also elaborates on the indication granularity of the DCI. Specifically, the indication resource granularity of the DCI can be the time slot level, the symbol level, or the resource type level.

[0168] (1) Timeslot-level indication: The IAB node's superior node indicates, on a timeslot-by-timeslot basis, whether MT resources are available (or whether the availability status of its MT available resources has been modified). In the simplest case, only one bit is required for each MT timeslot indication. It should be understood that the MT timeslot here refers to the MT timeslot in the MT available resources.

[0169] (2) Symbol-level indication: The IAB node's parent node can modify some symbols within a time slot as unusable. For example, the IAB node's parent node can indicate a continuous range of symbols within a time slot as usable or unusable using the start and length indicator value (SLIV).

[0170] (3) Resource type-level indication: Resource type-level indication can be considered as a special type of symbol-level indication, i.e., the indication signaling can separately indicate the availability of each or multiple resource type (D / U / F) symbols within a time slot. For MT indication, resource type-level indication can be divided into two sub-methods: (a) MT resource type-based indication, i.e., symbols with different resource types within an MT time slot can be independently indicated as unavailable; (b) DU resource type-based indication, i.e., MT symbols corresponding to symbols with different resource types within a DU time slot can be independently indicated as unavailable.

[0171] It should also be noted that different time domain resources (eg, different time slots) can be bundled and indicated, that is, the superior node of the IAB node can indicate the same resource availability status for the bundled multiple time domain resources.

[0172] In addition, in a possible implementation, the IAB node releases an MT resource to indicate that the corresponding DU resource is available, and the corresponding DU resource indicates a DU resource having the same identifier (eg, the same index) as the MT resource.

[0173] In a possible implementation, some carriers of the MT of the IAB node (i.e., some serving cells in the protocol) may be in an inactive state. At this time, the IAB node and its upper node regard all resources of the carrier corresponding to the MT as unavailable, and indicate that the DCI may not indicate the corresponding carrier, or indicate that the DCI always releases the corresponding resources, or the IAB node ignores the corresponding indication DCI indication field.

[0174] The above embodiment details a solution in which the superior node of an IAB node explicitly indicates the availability status of the MT's available resources and implicitly indicates the availability status of the DU's soft resources. The following details a solution in which the superior node explicitly indicates the availability status of the DU's soft resources and implicitly indicates the availability status of the MT's available resources.

[0175] In one possible implementation, in the case of multi-carrier MTs and multi-cell DUs, the IAB node's superior node can directly and explicitly indicate the availability status of the IAB node's DU's soft resources, and the IAB node can determine the availability status of its MT's available resources based on this indication. Specifically, the IAB node's superior node indicates whether the IAB node can communicate with a subordinate IAB node or UE using the soft resources determined by the DU after semi-static resource configuration. The IAB node then derives the availability status of its own MT's available resources based on its superior node's indication of the DU's soft resource availability (hereinafter referred to as the DU indication). When determining the availability status of an MT's available resources, it is necessary to consider the resource reuse or association relationship between each carrier of the MT and each cell of the DU.

[0176] Specifically, in the case that the DU of the IAB node has multiple cells, the indication DCI may selectively indicate the availability of soft resources of all DU cells or part of the DU cells.

[0177] In one possible implementation, the DCI needs to indicate the availability of resources of several time slots or symbols of one or more DU cells. Optionally, the IAB node may ignore the indication of some of the time slots or symbols indicated by the DCI. The partial symbols or time slots that can be ignored include: DU hard time slots or symbols configured by semi-static signaling, DU unavailable time slots or symbols configured by semi-static signaling, time slots or symbols configured with cell-level signals or channels (including SS / PBCH block, PRACH resources), designated configuration resources, etc. Here, designated configuration resources refer to resources that are additionally determined by the IAB node through configuration signaling, and the IAB node ignores the dynamic indication of the resource indicated by the DCI. In one possible implementation, the designated configuration resources are the DU time slot corresponding to the MT time slot where the IAB node receives the indication of the DCI, and a section of resources thereafter. As Figure 8 As shown, the designated configuration resource may be a segment of resources from DU slot 0 to DU slot 3 corresponding to MT slot 0 indicating DCI received by the IAB node. By configuring the designated configuration resource, delayed indication of dynamic indication can be achieved, thereby improving the flexibility of dynamic indication.

[0178] In a possible implementation, the specified configuration resource can be derived from the remaining configuration information indicating the DCI. Exemplarily, the specified configuration resource can be derived from the search space set period indicating the DCI and the indication range indicating the DCI. For example, assume that the search space set period indicating the DCI is S time slots, and the indication range indicating the DCI is P time slots. Then the length of the specified configuration resource may be P modulo S. Exemplarily, if P is 48 time slots and S is 20 time slots, the length of the specified configuration resource is 8 time slots (mod(48, 20) = 8). In addition, the length of the specified configuration resource may also be P - n*S, where n is a positive integer greater than or equal to 1. Exemplarily, if P is 24 time slots, S is 20 time slots, and n is 1, the length of the specified configuration resource is 4 time slots. Similarly, the specified configuration resource is the DU time slot corresponding to the MT time slot where the IAB node receives the indication DCI and a segment of resources after it. For specific examples, refer to the description in the previous paragraph, which will not be elaborated here.

[0179] Next, consider the relationship between the subcarrier spacing of the MT resource receiving the indication DCI and the subcarrier spacing of the DU resource indicated by the indication DCI. The subcarrier spacing used by the MT to receive the indication DCI is the subcarrier spacing configured for the IAB MT, denoted as kHz, and the reference subcarrier spacing used by the indication DCI to indicate the DU is denoted as kHz. When u1 = u2, when the index of the MT time slot where the IAB node receives the indication DCI is T, the index of the corresponding DU time slot is also T. When u1 < u2, when the index of the MT time slot where the IAB node receives the indication DCI is T, the index of the corresponding DU time slot is When u1 > u2, when the index of the MT time slot where the IAB node receives the indication DCI is T, the index of the corresponding DU time slot is where, represents rounding down.

[0180] In a possible implementation, if multiple indication DCIs indicate the available state of the DU soft resource for the same time domain resource, the IAB node only adopts the indication of the first indication DCI for this resource, or the IAB node ignores the indication of the subsequent indication DCIs for this resource. For example, both indication DCI#0 and indication DCI#1 indicate the availability of time slot X, and the time domain position of the PDCCH carrying DCI#0 is earlier. Then the IAB node ignores the indication of DCI#1 for time slot X.

[0181] After receiving the DU indication information from the superior node, the IAB node should determine the resource availability of each MT carrier at different times based on the resource reuse or association relationship between each MT carrier and each DU cell. For a single MT carrier, the MT's available time domain resources should not affect the transmission of the hard resources of all DU cells and the soft resources indicated as available by the superior node. Here, the method for determining MT resources is similar to step S1002 of the above embodiment, except that this embodiment needs to consider both the DU's hard resources and the soft resources indicated as available by the superior node.

[0182] Similar to semi-static resource configuration, the available / unavailable time-domain resources for each MT carrier may need to be determined based on the indications of multiple DU cells associated with it. Specifically, for a single MT carrier, the availability status of its available resources should be determined based on the dynamic indications of multiple DU cells associated with it. Specifically, it should be determined whether the availability status of the available resources obtained by the MT through semi-static resource configuration will be modified to unavailable. When determining the availability status of the MT's available resources, it is necessary to consider the resource reuse or association relationship between each MT carrier and each DU cell.

[0183] In a possible implementation, the indication DCI may take the MT carrier into consideration when indicating the availability status of soft resources of the DU cell, for example, the indication DCI indicates the availability status of soft resources of one or more DU cells associated with one or more MT carriers.

[0184] Specifically, when configuring the indication DCI information, the superior node or donor node may also configure the MT carrier associated with the DCI. In addition, the IAB node may also determine the DU cell corresponding to the indication DCI. The DU cell here may be configured by the donor node or superior node, or may be derived by the IAB node based on the associated MT carrier. For example, the indication DCI may indicate a DU cell that has a TDM relationship with the associated MT carrier. Optionally, when no DU cell with a TDM relationship exists for the MT carrier, the indication DCI may indicate a DU cell that has an FDM / SDM relationship with the associated MT carrier.

[0185] Exemplarily, the configuration information indicating the DCI may include:

[0186] {

[0187] associated carrier identifier;

[0188] Indicated DU cell identifier;

[0189] }

[0190] The associated MT carrier identifier may refer to the identifier of an MT carrier that has a resource reuse or association relationship with the DU cell dynamically indicated by the upper node, for example, CC1. The indicated DU cell identifier may refer to the identifier of the DU cell dynamically indicated by the upper node, for example, cell 1. The associated MT carrier identifier is configured by the upper node. The indicated DU cell identifier may be configured by the upper node or derived from the associated MT carrier identifier and the resource reuse or association relationship between the MT carrier and the indicated DU cell. Configuring the associated MT carrier identifier while indicating the soft resource availability status of the DU cell allows the IAB node to quickly obtain the available resource status of each MT carrier.

[0191] In a possible implementation, the DCI indicates both the available status of the soft resources of the DU cell and the available status of the available resources of the MT carrier.

[0192] Exemplarily, the configuration information indicating the DCI may further include:

[0193] Indicates DCI configuration information:

[0194] {

[0195] Indicates MT carrier identifier;

[0196] Indicates DU cell identity;

[0197] }

[0198] Among them, the indication of MT carrier identity may refer to the identity of the MT carrier indicated by the upper node in the dynamic resource indication, for example, CC2. The indication of DU cell identity may refer to the identity of the DU cell indicated by the upper node in the dynamic resource indication, for example, cell 2. The indication of MT carrier identity and the indication of DU cell identity can both be configured by the upper node, and the upper node can simultaneously indicate the resource availability status of one or more MT carriers and one or more DU cells by indicating DCI. In this possible implementation, it is assumed that the indication DCI indicates the resource availability of an MT carrier and a DU cell. When the indicated MT carrier and the DU cell have a TDM association relationship, the indication DCI can indicate two states, for example, 0 / 1. Among them, (1) 0: DU resources are unavailable + MT resources are available; (2) 1: DU resources are available + MT resources are unavailable.

[0199] To summarize, after receiving the dynamic resource indication from the upper node, if the indication is an MT indication, that is, the upper node indicates the availability of the MT available resources of the IAB node, then the IAB node should determine the availability of the soft resources of each cell of the DU based on the MT indication and the resource multiplexing or association relationship between each carrier of the MT and each cell of the DU, wherein the use of the DU resources by the IAB node should not affect the use of the MT available resources indicated as available.

[0200] If the indication is a DU indication, that is, the upper node directly indicates the availability of the DU soft resources of the IAB node, the IAB node should determine the availability of the available resources of each carrier of the MT based on the DU indication and the resource multiplexing or association relationship between each carrier of the MT and each cell of the DU, wherein the use of the MT resources by the IAB node should not affect the use of DU hard and soft resources indicated as available.

[0201] Regardless of whether the dynamic resource indication received from the upper node is an MT indication or a DU indication, the IAB node can determine the availability of each resource of each MT carrier. For the MT's available resources, the MT behaves similarly to a normal terminal device, while for the MT's unavailable resources, the MT's behavior needs to be defined. Specifically:

[0202] The MT of the IAB node does not expect the upper node to instruct it to receive PDSCH, send PUSCH, or provide HARQ-ACK feedback on unavailable resources by indicating DCI. However, it should be noted that the above restrictions may only apply to some transmission processes, such as only the PDSCH, PUSCH, or HARQ-ACK feedback scheduled by the DCI with scrambled CRC of some RNTIs (such as C-RNTI, MCS-C-RNTI). For the transmissions indicated by the PDSCH and PUSCH scheduled by the DCI with scrambled CRC of other RNTIs (such as SI-RNTI), it is not necessary to meet its constraints. In one possible implementation, the above restrictions only apply to the unicast PDSCH and PUSCH of the IAB node, and do not apply to the broadcast PDSCH scheduling of the upper node.

[0203] Furthermore, the MT of the IAB node may not transmit or receive high-level configuration signals in unavailable resources, which may include one or more of the following: PDCCH monitoring, CSI-RS reception, SRS transmission, semi-static PDSCH, configuration-based PUSCH, etc. For PDCCH monitoring, the MT may not monitor some PDCCHs in unavailable resources, for example, the UE-specific search space set, or the DCI corresponding to the dynamically scheduled unicast PDSCH / PUSCH. In other words, the MT may monitor the PDCCH corresponding to the broadcast channel in unavailable resources. The MT does not monitor the DCI with a specific RNTI-scrambled CRC. Similarly, the MT may not receive the UE-specific CSI-RS in unavailable resources.

[0204] It should also be noted that when the MT has multiple carriers, different carriers may have different availability states for the same time domain resource.

[0205] It should be understood that the above MT behavior may be limited to a specific MT state, for example, the MT meets the above behavior only when the MT is in the RRC connected state, and may not be limited to the above behavior when the MT is in the idle or inactive state.

[0206] It should also be understood that in some cases, the IAB node MT may miss detecting the PDCCH corresponding to the DCI. In this case, the IAB node MT should assume that the availability of all semi-statically determined available resources remains unchanged and perform corresponding backhaul link reception or transmission. However, the IAB node MT may have the following exception behavior: the IAB node may not transmit SRS or PUSCH based on configuration on the semi-statically determined available resources.

[0207] The present application provides a dynamic resource indication method for MT resources and DU resources of an IAB node. In the application scenarios of MT multi-carrier and DU multi-cell, the superior node of the IAB node can explicitly or implicitly indicate the available status of the available resources of the MT of the IAB node, and explicitly or implicitly indicate the available status of the DU soft resources of the IAB node. Among them, the superior node of the IAB node can also only explicitly indicate the available status of the available resources of the MT of the IAB node, and the IAB node can implicitly determine the available status of its DU soft resources based on the indication. The superior node of the IAB node can also only explicitly indicate the available status of the DUsoft resources of the IAB node, and the IAB node can implicitly determine the available status of its MT available resources based on the indication. The technical solution provided by the present application can realize dynamic resource sharing of MT resources and DU resources of the IAB node.

[0208] The above describes in detail the method for dynamic indication of resources provided by the present application. The following introduces the relay device corresponding to the first node provided by the present application.

[0209] See also Figure 17 , Figure 17 1700 is a schematic structural diagram of the relay device 1700 provided in this application. Figure 17 As shown, the relay device 1700 includes a processing unit 1710 and a transceiver unit 1720 .

[0210] Processing unit 1710 is used to determine the semi-static resource configuration of the first resources corresponding to D carriers and the second resources corresponding to F cells based on the first indication information, where D≥1, F≥1; and is also used to determine the available status of the available resources of the first resources corresponding to the D carriers and the available status of the dynamic resources of the second resources corresponding to the F cells based on the second indication information.

[0211] The transceiver unit 1720 is used to receive first indication information sent by a second node or a host node, where the first indication information is used to indicate the semi-static resource configuration of the first resources corresponding to D carriers in the first node and the second resources corresponding to F cells, where D≥1 and F≥1; and receive second indication information sent by the second node, where the second indication information is used to indicate the available status of the available resources of the first resources corresponding to the D carriers in the first node and the available status of the dynamic resources of the second resources corresponding to the F cells.

[0212] Optionally, the device 1700 may be a chip or an integrated circuit.

[0213] The chip described in the embodiments of the present application may be a field-programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD), or other integrated chips.

[0214] Optionally, processing unit 1710 may be a processor. Transceiver unit 1710 may be composed of a receiving unit and a transmitting unit. Transceiver unit 1720 may be a transceiver, which may include a transmitter and a receiver, and have both receiving and transmitting functions. Optionally, transceiver unit 1710 may also be an input / output interface, or an input / output circuit.

[0215] In another possible embodiment, the transceiver unit 1720 may be a communication interface, such as an input / output interface, an input interface circuit, and an output interface circuit.

[0216] It should be understood that the device 1700 may correspond to the Figure 10 The dynamic resource indication method 1000 provided in the embodiment and the first node or IAB node in other embodiments include: each unit of the apparatus 1700 is used to implement the corresponding operations and / or processes performed by the first node or IAB node in the method 1000 and other embodiments.

[0217] For example, the processing unit 1710 is further configured to implicitly determine the availability status of its DU soft resources according to the availability status of the MT's available resources. Alternatively, the processing unit 1710 is further configured to implicitly determine the availability status of its MT's available resources according to the availability status of the DU soft resources.

[0218] In addition, the present application provides a computer-readable storage medium, which stores computer instructions. When the computer instructions are executed on a computer, the computer executes the corresponding operations and / or processes performed by the first node or the IAB node in any of the above method embodiments.

[0219] The present application also provides a computer program product, which includes computer program code. When the computer program code is run on a computer, it enables the computer to execute the corresponding operations and / or processes performed by the first node or the IAB node in any of the above method embodiments of the present application.

[0220] The present application also provides a chip including a processor, wherein the processor is configured to call and run a computer program stored in a memory to execute the corresponding operations and / or processes executed by the first node in any of the above method embodiments of the present application.

[0221] Optionally, the chip further includes a memory connected to the processor, and the processor is configured to read and execute a computer program in the memory.

[0222] 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 to be processed, and the processor obtains the signals and / or data from the communication interface and processes them.

[0223] Optionally, the communication interface may be an input / output interface, specifically including an input interface and an output interface. Alternatively, the communication interface may be an input / output circuit, specifically including an input circuit and an output circuit.

[0224] The memory and storage involved in the above embodiments may be physically independent units, or the memory may be integrated with the processor.

[0225] In each of the above embodiments, the processor may be a central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the technical solution of the present application. 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 may distribute the control and signal processing functions of the terminal device or network device among these devices according to the respective functions of these devices. In addition, the processor may have the function of operating one or more software programs, and the software programs may be stored in a memory. The functions of the processor may be implemented by hardware, or may be implemented by executing corresponding software through hardware. The hardware or software includes one or more modules corresponding to the above functions.

[0226] The memory may be a read-only memory (ROM), other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer.

[0227] In the embodiments of the present application, "and / or" describes the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, or the existence of B alone. A and B can be singular or plural.

[0228] Those skilled in the art will appreciate that the units described in the various examples of the embodiments disclosed herein can be implemented using electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application.

[0229] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0230] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0231] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0232] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0233] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A method for dynamic indication of resources, characterized in that: The method comprises: The first node receives first indication information sent by the second node or the donor node, where the first indication information is used to indicate a semi-static resource configuration of first resources corresponding to D carriers and second resources corresponding to F cells in the first node, where D ≥ 1, F ≥ 1, and at least one of D and F is greater than 1; The first node determines, according to the first indication information, a semi-static resource configuration of first resources corresponding to the D carriers and second resources corresponding to the F cells; The first node receives second indication information sent by the second node, where the second indication information is used to indicate an available status of available resources of the first resources corresponding to the D carriers and an available status of dynamic resources of the second resources corresponding to the F cells in the first node; The first node determines, based on the second indication information, an available state of the available resources of the first resources corresponding to the D carriers; and the first node determines, based on the available state of the available resources of the first resources corresponding to the D carriers and a resource multiplexing relationship between the first resources corresponding to the D carriers and the second resources corresponding to the F cells, an available state of the dynamic resources of the second resources corresponding to the F cells; or The first node determines, according to the second indication information, an available status of the dynamic resources of the second resources corresponding to the F cells, and the first node determines, according to the available status of the dynamic resources of the second resources corresponding to the F cells and the resource multiplexing relationship between the first resources corresponding to the D carriers and the second resources corresponding to the F cells, an available status of the available resources of the first resources corresponding to the D carriers; The resource reuse relationship between the first resources corresponding to the D carriers and the second resources corresponding to the F cells includes at least one of the following: Time division multiplexing, half-duplex frequency division multiplexing, half-duplex space division multiplexing, full-duplex, dynamic adaptive frequency division multiplexing, dynamic adaptive space division multiplexing, dynamic adaptive full-duplex.

2. The method according to claim 1, wherein The second node is the upper node of the first node; the first resource is the transmission resource for communication between the first node and the second node, the second resource is the transmission resource for communication between the first node and a third node, and the third node is the lower node of the first node.

3. The method according to claim 1 or 2, wherein: The available resources of the first resource are available resources determined after the first resource is configured through the semi-static resource configuration.

4. The method according to claim 1 or 2, wherein: The dynamic resource of the second resource is a dynamic resource determined after the second resource is configured through the semi-static resource.

5. The method according to claim 1 or 2, wherein: The indication range of the second indication information includes at least one of the following: available resources of the first resource determined by the semi-static resource configuration; a first set of resources to be indicated, determined by the designated G cells among the F cells and having the resource reuse relationship with the G cells; a second set of resources to be indicated consisting of some resources in the first resources indicated by the second node or the host node; A third set of resources to be indicated consists of all resources in the first resources indicated by the second node or the host node.

6. The method according to claim 1 or 2, wherein: The second indication information includes identifiers of the D carriers and / or identifiers of the F cells.

7. The method according to claim 1 or 2, wherein: The second indication information is downlink control information DCI.

8. The method according to claim 7, characterized in that The downlink control information DCI further includes at least one of the following information: control resource set information, search space set information, indication delay information, and indication range information.

9. A relay device, characterized in that: include: a transceiver unit, configured to receive first indication information sent by a second node or a donor node, where the first indication information is used to indicate a semi-static resource configuration of first resources corresponding to D carriers and second resources corresponding to F cells in the first node, where D ≥ 1, F ≥ 1, and at least one of D and F is greater than 1, and the first node is a node corresponding to the relay device; The transceiver unit is further configured to receive second indication information sent by the second node, where the second indication information is used to indicate the available status of the available resources of the first resources corresponding to the D carriers in the first node and the available status of the dynamic resources of the second resources corresponding to the F cells; a processing unit, configured to determine, according to the first indication information, a semi-static resource configuration of first resources corresponding to the D carriers and second resources corresponding to the F cells; The processing unit is further configured to determine, based on the second indication information, an available status of the available resources of the first resources corresponding to the D carriers, and the first node determines, based on the available status of the available resources of the first resources corresponding to the D carriers and a resource multiplexing relationship between the first resources corresponding to the D carriers and the second resources corresponding to the F cells, an available status of the dynamic resources of the second resources corresponding to the F cells; or The first node determines, according to the second indication information, an available status of the dynamic resources of the second resources corresponding to the F cells, and the first node determines, according to the available status of the dynamic resources of the second resources corresponding to the F cells and the resource multiplexing relationship between the first resources corresponding to the D carriers and the second resources corresponding to the F cells, an available status of the available resources of the first resources corresponding to the D carriers; The resource reuse relationship between the first resources corresponding to the D carriers and the second resources corresponding to the F cells includes at least one of the following: Time division multiplexing, half-duplex frequency division multiplexing, half-duplex space division multiplexing, full-duplex, dynamic adaptive frequency division multiplexing, dynamic adaptive space division multiplexing, dynamic adaptive full-duplex.

10. The device according to claim 9, wherein The second node is the upper node of the relay device; the first resource is the transmission resource for the relay device to communicate with the second node, the second resource is the transmission resource for the relay device to communicate with the third node, and the third node is the lower node of the relay device.

11. The device according to claim 9 or 10, characterized in that The available resources of the first resource are available resources determined after the first resource is configured through the semi-static resource configuration.

12. The device according to claim 9 or 10, characterized in that The dynamic resource of the second resource is a dynamic resource determined after the second resource is configured through the semi-static resource.

13. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer is caused to perform the method according to any one of claims 1 to 8.

14. A chip, characterized in that: The system comprises a memory and a processor, wherein 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 perform the method according to any one of claims 1 to 8.

15. A computer program product, characterized in that The computer program product comprises one or more computer programs, and when the computer program is run on a computer, the computer is caused to perform the method according to any one of claims 1 to 8.

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