WO2019192499A1 - Resource allocation method, related device and system - Google Patents

Abstract

Disclosed in the present application are a resource allocation method, a related device and a system, said method comprising: a first node sends a first signaling to a terminal, the first signaling indicating a first resource and a second resource allocated to the terminal, the first node being a relay node between a second node and the terminal, and the first resource being used for data transmission on an access link and not being used for data transmission on a return link; triggering the second resource in whole or in part when a resource conflict may occur between the access link and the return link, wherein the triggered whole or partial second resource is not used for data transmission of the access link. By implementing the present application, the occurrence of resource conflict between an access link and a return link may be avoided.

Description

Resource allocation method, related device and system

This application claims the Chinese patent application filed on April 4, 2018, the Chinese Patent Application No. 201810304176.4, and the priority of the Chinese Patent Application No. 201810657295.8 filed on June 22, 2018, the above-mentioned patent application The full text is incorporated herein by reference.

Technical field

The present application relates to the field of communications technologies, and in particular, to a resource allocation method, related apparatus, and system.

Background technique

In a mobile communication system, a link between a station (for example, a base station and a radio remote unit) is called a backhaul link, and a link between the station and the terminal is called an access link.

In a 4G (LTE) system, the backhaul link is usually a wired link (such as fiber) and the access link is a wireless link.

In the fifth generation mobile communication (the 5th generation, 5G) new radio (NR) system, the need for dense, flexible, and high-frequency signal coverage for network deployment, in order to meet these needs, 5G NR system Network deployment using relay technology and wireless backhaul links. Briefly, one or more relay nodes (RNs) are added between the base station and the terminal, and the relay node is responsible for one or more forwarding of the wireless signals, that is, the wireless signals arrive at the terminal through multiple hops. Here, the link between the relay node and the base station or other relay node belongs to the backhaul link, and the backhaul link is a wireless link. Like the 4G system, the access link in the 5G NR system is also a wireless link.

Therefore, the 5G NR system includes two types of wireless links: a backhaul link between the base station and the relay node, and an access link between the relay node and the terminal.

At present, the integrated access and backhaul (IAB) technology is proposed for the 5G NR system. The IAB technology refers to the shared frequency band resources of the backhaul link and the access link, and performs the same-frequency deployment to improve the spectrum utilization. In the application scenario of the IAB, interference and collision may occur when the two types of radio links use the band resources. How to flexibly allocate resources and avoid interference and collision between the two types of radio links is an urgent problem to be solved.

Summary of the invention

The present application provides a resource allocation method, related apparatus, and system, which can avoid resource conflicts between a backhaul link and an access link.

In a first aspect, the present application provides a resource allocation method, which is applied to a first node side, where the method may include: a first node sends a first signaling to a terminal, where the first signaling indicates a scheduling configuration to the terminal a first resource and a second resource; the first node is a relay node between the second node and the terminal; the first resource is used for data transmission on the access link, and is not used for a backhaul link Data transmission; when a resource conflict may occur between the access link and the backhaul link, some or all of the second resources are activated, and some or all of the activated second resources are not used for the access chain Data transmission of the path; the access link is a link between the first node and the terminal, and the backhaul link is a link between the first node and the second node .

Optionally, the first node may activate some or all of the second resources by sending the second signaling to the terminal.

In a second aspect, the present application provides a resource allocation method, which is applied to a terminal side, where the method may include: receiving, by the terminal, first signaling sent by the first node, where the first signaling indicates that the first configuration is configured to the terminal a resource and a second resource; the first node is a relay node between the second node and the terminal; the first resource is used for data transmission on the access link, and is not used on the backhaul link Data transmission; when a resource conflict may occur between the access link and the backhaul link, some or all of the second resources are activated, and some or all of the activated second resources are not used for the access link. Data transmission; the access link is a link between the first node and the terminal, and the backhaul link is a link between the first node and the second node.

Optionally, the terminal may activate some or all of the second resources by receiving the second signaling sent by the first node.

By implementing the methods described in the first aspect and the second aspect, resource conflicts between the backhaul link and the access link can be avoided, and terminal power consumption is saved.

In the present application, the data transmission on the access link includes: the terminal sends data to the first node, that is, uplink data transmission, for example, a sounding reference signal (SRS) sent by the terminal to the first node, and the terminal is first. The data transmitted by the node, etc.; further includes the first node transmitting data to the terminal, that is, downlink data transmission, for example, the first node sends a channel quality information reference signal (CSI-RS) and a synchronization information block (synchronization) to the terminal. Signal block, SSB) or data. The data transmission on the backhaul link includes: the first node sends data to the second node (upstream), and the second node sends data to the first node (downstream).

In this application, the resource conflict between the access link and the backhaul link is: resources occupying the same time domain (that is, the same time or time period), and uplink data for the access link and the backhaul link. Transmission, or, when used for downlink data transmission of the access link and the backhaul link, resource conflicts between the access link and the backhaul link.

Optionally, before the first node activates part or all of the second resources, the first node may determine whether a resource conflict may occur between the access link and the backhaul link.

Optionally, when the at least one of the following items is met, the first node determines that a resource conflict may occur between the access link and the backhaul link: when the frequency of interaction between the first node and the second node exceeds a first value, when When the amount of data transmitted between the first node and the second node exceeds the second value, when the quality of the signal received by the first node from the second node is lower than the third value.

In connection with the methods described in the first aspect and the second aspect, a specific implementation of the second signaling in the alternative embodiment is described below.

Optionally, when the second signaling is used to activate some or all of the second resources, the activation function may be effective once or continuously. The following two situations are respectively described:

(1) The activation mode is effective once.

In this case, some or all of the activated second resources are not used for one data transmission of the access link, and the period of the primary data transmission is after the terminal receives the second signaling reception time, away from the The most recent period of reception of the second signaling.

In the case of (1), optionally, the second signaling includes first information, where the first information is used to indicate some or all of the second resources of the activation, and two possible indication manners are listed below.

(1) The first information includes m bits, and each n bits correspond to one resource group, and the part or all of the second resources include: resources in the resource group corresponding to the n bits of the fifth value. That is, the first information indicates the part or all of the second resource by means of a bit map. Here, the fifth value can be predetermined.

Specifically, the second resource includes multiple resources, and the multiple resources may be grouped, and each group includes one or plural resources. When each group includes only one resource, each n bits in the first information correspond to one resource.

(2) The different values of the first information respectively represent different resource groups, and the part or all of the second resources include: resources in the resource group represented by the value of the first information.

Specifically, the first information may take different values, each value corresponds to one resource group, and the second signaling is used to activate the resource group corresponding to the value taken by the first information.

(2) The activation function is activated in a continuous manner until some or all of the activated second resources are deactivated.

Optionally, in the second (2) case, after the first node sends the second signaling to the terminal, the third signaling may be sent to the terminal, where the third signaling is used to deactivate some or all of the second resources. In this way, resources can be fully utilized to avoid waste of resources.

Optionally, in the second (2) case, the second signaling and the third signaling may be the same signaling, and the activation or deactivation function is identified by the value of the flag bit. The second signaling and The signaling format of the signaling when the third signaling is the same signaling.

Optionally, the second signaling includes a first flag bit and a first information, where the first flag bit is equal to the fourth value, where the first signaling is specifically used to activate part or all of the second resource, where the first information is used. Indicate some or all of the second resource. Here, the fourth value may be predetermined, for example, may be “0”, and the manner in which the first information indicates the part or all of the second resource is the same as in the case of the above (1), and the related description may be referred to.

Optionally, the third signaling and the second signaling are the same, including the first flag bit and the first information, where the first flag bit is equal to the seventh value, and is used to indicate that the third signaling is specifically used to deactivate part or all of the The second resource, the first information is used to indicate the part or all of the second resource. Here, the seventh value may be predetermined, for example, may be "1", and the manner in which the first information indicates the part or all of the second resource is the same as in the case of the above (1), and the related description may be referred to.

In a specific implementation, the second signaling and the third signaling mentioned above may be downlink control information (DCI), or may be other signaling with an activation/deactivation resource function, which is not limited in this application.

In combination with the second (second) case, when a resource conflict may occur between the access link and the backhaul link, some or all of the second resources are activated, and after some time, the part or all of the second resources may be deactivated. That is, after a period of time, the terminal can resume data transmission on some resources that have been activated. After the data transmission is resumed, the power used by the terminal to transmit data using these once activated resources affects the efficiency and quality of the data transmitted by the terminal.

In some optional embodiments, after the data transmission is resumed, the transmission power when the terminal transmits the data to the first node by using the part or all resources is determined according to at least the closed loop power control value. The closed loop power control value can be determined in at least three ways:

(1) The closed loop power control value is the same as the closed loop power control value of the physical uplink shared channel (PUSCH). Here, the closed loop power control value of the PUSCH is configured by the first node for the terminal.

(2) The closed-loop power control value and the part or all of the resources are not used for the data transmission of the access link, that is, the closed-loop power control value before being activated is the same.

(3) The closed-loop power control value is set to 0 when the part or all of the resources are not used for data transmission of the access link, that is, when the duration of the active state is greater than the sixth value. Here, the sixth value may be set by the terminal autonomously, or may be pre-arranged by the first node and the terminal, which is not limited in this application.

The closed-loop power control value can be adjusted in the above three manners, so that the transmission power of the terminal when using the activated resource to send data to the first node is adapted to the current scenario or the current actual situation, and the terminal can flexibly control the terminal to use the resource to send. Transmit power at the time of data.

In conjunction with the methods described in the first aspect and the second aspect, several possible ways of determining the first resource are described in detail below.

(1) The first resource is specified by the standard protocol, and the indication information of the first resource is pre-stored in the first node and the second node.

(2) The first resource is determined by the first node.

In case the first resource is determined by the first node, the first node needs to notify the second node of the determined first resource. That is, before the first node sends the first signaling to the second node, the method may further include the following steps: the first node sends the fourth signaling to the second node, where the fourth signaling is used to indicate that the first node is configured for the terminal. The second node sends a fifth signaling to the first node, where the fifth signaling is used by the first node to determine, as the first resource, the resource to be configured for the terminal. In a specific implementation, the fifth signaling may be an acknowledgement (ACK).

Optionally, the second node may also confirm, in an implicit manner, the resource configured by the first node as the terminal as the first resource. Specifically, the first node sends the fourth signaling to the second node, and after the second node receives the fourth signaling, the second node does not send the first node for a period of time (the period can be measured by a timer) Any information, if the first node does not receive any information sent by the second node within the period of time, the resource configured by the first node for the terminal may be used as the first resource.

(3) The first resource is determined by negotiation between the first node and the second node.

Before the first resource is determined by the first node and the second node, before the first node sends the first signaling to the second node, the method may further include the following steps: the first node sends the fourth message to the second node. The fourth signaling is used to indicate that the first node is configured as a resource of the terminal; the second node sends a fifth signaling to the first node, where the fifth signaling is used to indicate that the second node is a resource configured by the terminal, and is also used for And indicating that the first resource is a resource configured by the second node for the terminal, where the resource configured by the second node for the terminal is obtained by the second node according to the resource configured by the first node for the terminal.

Specifically, after receiving the fourth signaling sent by the first node, the second node can obtain the resource configured by the first node for the terminal. The second node may slightly modify or adjust the resources configured by the first node for the terminal, as the resource configured by the second node, and then notify the first node by using the fifth signaling.

In a specific implementation, the fifth signaling may be a media access control-control element (MAC-CE) or a radio resource control (RRC) signaling, which is not limited in this application.

In the (3) determining manner, the fifth signaling may have multiple formats and may carry different contents. The following two formats may be described in the fifth signaling:

(1) The fifth signaling includes a domain, each of which indicates a resource in the first resource. The number of resources configured by the first node in the fourth signaling for the terminal is also a. When the jth field takes an eighth value (for example, 0), the fifth signaling is used to indicate the jth resource in the first resource, and the first node in the fourth signaling is the jth in the resource configured by the terminal. The resources are the same. When the jth field takes the ninth value, the ninth value is used to indicate the time domain configuration information of the jth resource in the first resource. j ≤ a, and l, j are positive integers.

(2) The fifth signaling carries: the kth sequence number and the kth time frequency domain configuration information.

The fifth signal is used to indicate that the resource configured by the second node is: the resource configured in the first node is the terminal, and the time-frequency domain configuration information of the k-th resource is modified to the k-th time-frequency domain configuration information. The time-frequency domain configuration information of the remaining resources is unchanged.

Optionally, after receiving the fifth signaling sent by the second node, the first node may send an ACK to the second node to confirm that the resource configured by the second node is the first resource, that is, the second node. Do a positive reply. Optionally, the first node may also confirm, in an implicit manner, that the resource configured by the second node is configured as the first resource, and the implicit confirmation mode is similar to the foregoing (2) determining manner, and may refer to The related description will not be described here.

Optionally, after receiving the fifth signaling sent by the second node, the first node may send the signaling to the second node again if the resource configured by the second node is not suitable or needs to be adjusted. Informing the second node that the first resource that the first node considers appropriate is equivalent to repeating the steps in the foregoing (3) determining manner until the first node and the second node reach a consensus on the first resource.

In a third aspect, the present application provides a first node, which may include a plurality of functional modules for performing the method provided by the first aspect or the possible implementation of the first aspect.

In a fourth aspect, the application provides a terminal, which may include a plurality of functional modules for performing the method provided by the second aspect or the possible implementation of the second aspect.

In a fifth aspect, the present application provides a first node for performing the resource allocation method described in the first aspect or the possible implementation manner of the first aspect. The first node can include a memory and a processor, transceiver coupled to the memory, wherein the transceiver is for communicating with other communication devices, such as terminals. The memory is configured to store implementation code of the resource allocation method described in the first aspect or the possible implementation of the first aspect, the processor is configured to execute program code stored in the memory, that is, to perform the method provided by the first aspect Or the method provided by any of the possible embodiments of the first aspect.

In a sixth aspect, the application provides a terminal for performing the resource allocation method described in the second aspect or the possible implementation manner of the second aspect. The terminal can include a memory and a processor, transceiver coupled to the memory, wherein the transceiver is for communicating with other communication devices, such as a first node. The memory is used to store implementation code of a resource allocation method described in a second aspect or a possible implementation of a second aspect, the processor is configured to execute program code stored in the memory, that is, to perform the method provided by the second aspect Or the method provided by any of the possible embodiments of the second aspect.

In a seventh aspect, the application provides a circuit system, including processing circuitry, configured to: generate first signaling, where the first signaling is used to indicate a first resource and a second resource that are configured to be used by a terminal; The data transmission on the access link is not used for data transmission on the backhaul link; when a resource conflict may occur on the access link and the backhaul link, some or all of the second resources are activated, and some or all of the activated The second resource is not used for data transmission of the access link; the access link is a link between the first node and the terminal, and the backhaul link is a link between the first node and the second node. .

In an eighth aspect, the present application provides a circuit system, including a processing circuit and a receiving circuit, where the receiving circuit is configured to receive first signaling sent by a first node, where the first signaling indicates a first resource and a second configured to be sent to the terminal a resource; the first resource is used for data transmission on the access link, and is not used for data transmission on the backhaul link; the processing circuit is configured to activate a part or when a resource conflict may occur between the access link and the backhaul link All the second resources, some or all of the activated second resources are not used for data transmission of the access link; the access link is the link between the first node and the terminal, and the return link is the first node and the second node The link between the nodes. .

In a ninth aspect, the present application provides a communication system, including: a first node and a terminal, where the first node may be the first node described in the foregoing third aspect or the fifth aspect, and the terminal may be the foregoing The terminal described in the fourth aspect or the sixth aspect.

In a tenth aspect, the present application provides a computer readable storage medium having instructions stored thereon that, when run on a computer, cause the computer to perform the resource allocation method described in the first aspect above.

In an eleventh aspect, the present application provides another computer readable storage medium having instructions stored thereon that, when run on a computer, cause the computer to perform the resource allocation method described in the second aspect above.

In a twelfth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the resource allocation method described in the first aspect above.

In a thirteenth aspect, the present application provides another computer program product comprising instructions which, when run on a computer, cause the computer to perform the resource allocation method described in the second aspect above.

When the relay node (that is, the first node) allocates resources to the terminal, the resource is divided into two types: the first resource and the second resource, and the first resource is a resource reserved for the access link. The second resource is a flexible resource. When a resource conflict occurs between the access link and the backhaul link, some or all of the second resources are activated, and some or all of the activated second resources are not used for data transmission of the access link. To avoid resource conflicts between the access link and the backhaul link. After the relay node activates part or all of the second resources, the part or all of the second resources may also be deactivated, and some or all of the deactivated second resources are used for data transmission of the access link, and the configured configuration may be fully utilized. Resources. In addition, the transmission power of the terminal transmitting data to the first node using part or all of the deactivated second resources may be flexibly controlled to adapt to the current scene or the current actual situation.

DRAWINGS

1 is a schematic structural diagram of a communication system provided by the present application;

2 is a schematic diagram of a scenario of resource conflicts;

3 is a schematic structural diagram of a relay node provided by the present application;

4 is a schematic structural diagram of a terminal provided by the present application;

FIG. 5 is a schematic structural diagram of a network device provided by the present application;

FIG. 6 is a schematic flowchart diagram of a resource allocation method provided by the present application;

FIG. 7 is a diagram showing an example of resource allocation provided by the present application; FIG.

8 and FIG. 9 are schematic flowcharts of determining a first resource provided by the present application;

FIG. 10 is a functional block diagram of a relay node and a terminal provided by the present application.

detailed description

The terms used in the embodiments of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

Referring to Figure 1, the wireless communication system to which the present application relates is first introduced. The wireless communication system of the present application operates in a high frequency band, is not limited to a long term evolution (LTE) system, and may be a future evolved 5G system, NR system, machine to machine (M2M) system. , WIFI system, etc. As shown in FIG. 1, the wireless communication system 100 can include one or more network devices 101, one or more relay nodes 102, and one or more terminals 103. among them:

The wireless link between the network device 101 and the relay node 102, and any two relay nodes 102 is a backhaul link, and the wireless link between the relay node 102 and the terminal 103 is an access link. In the present application, the communication system shown in FIG. 1 uses the IAB technology, and the backhaul link and the access link share the frequency band resources, and the same frequency deployment can be performed to improve the spectrum utilization. Briefly, resources of the same frequency band can be simultaneously configured for the backhaul link and the access link in the communication system shown in FIG. 1.

Network device 101 may be distributed throughout wireless communication system 100, either stationary or mobile. In some embodiments of the present application, the network device 101 may be a base station, the base station may be used to communicate with one or more relay nodes or terminals, and may also be used to communicate with one or more base stations having partial terminal functions. . The base station may be a base transceiver station (BTS) in a time division synchronous code division multiple access (TD-SCDMA) system, or an evolved base station in an LTE system (evolved node B) , eNB), and a 5G system, a base station in the NR system (next generation node B, gNB). In addition, the network device 101 may also be an access point (AP), a transmit/receive point (TRP), a central unit (CU), or other network entity.

The relay node 102 can be distributed throughout the wireless communication system 100, either stationary or mobile. The relay node 102 itself is a terminal of the network device 101, and is scheduled together with other terminals under the jurisdiction of the network device 101, and the relay node 102 can simultaneously construct a cell as a micro base station to schedule terminals within the signal coverage range. In the present application, the relay node may be used to communicate with one or more network devices or terminals, or may be used to communicate with other relay nodes. For example, in the communication system shown in FIG. 1, the relay node 102 is responsible for transmitting the wireless signal transmitted by the network device 101 one or more times and then transmitting it to the terminal 103, and is also responsible for performing the wireless signal sent by the terminal 103 once or After multiple forwarding, it is transmitted to the network device 101. In some embodiments of the present application, the relay node 102 may be a relay transport node (relay TRP).

Terminals 103 may be distributed throughout wireless communication system 100, either stationary or mobile. In some embodiments of the present application, the terminal 103 may be a mobile phone, VR glasses, a mobile device, a mobile station, a mobile unit, an M2M terminal, a wireless unit, a remote unit, a terminal agent, and a mobile client. and many more.

In the present application, the wireless communication system 100 can be a multi-beam communication system. among them:

The network device 101, the relay node 102, and the terminal 103 can all be configured with a large-scale antenna array, and use beamforming technology to control the antenna array to form beams with different directions, and transmit and receive data through these beams. That is to say, in the wireless communication system 100, the network device 101, the relay node 102, and the terminal 103 employ multi-beam communication.

In the communication system shown in Figure 1, the communication mode of the relay node is half-duplex, and two-way communication cannot be performed at the same time. That is, the relay node cannot receive data transmitted by the network device and send data to the terminal at the same time, nor can it transmit data to the terminal. At the same time, both the data sent by the terminal and the data are sent to the network device. This half-duplex communication method affects communication on the access link.

Specifically, when a slot is simultaneously configured for the backhaul link and the access link, the slot can be used by both the backhaul link and the access link. When the slot is simultaneously configured as a downlink resource of the backhaul link and the access link (shown as "D" in FIG. 2), referring to FIG. 2, due to the half-duplex communication mode of the relay node, the relay node only The data transmitted by the network device can be received on the backhaul link, and the data cannot be sent to the terminal on the access link (this is because the priority of the network device scheduling relay node on the backhaul link is higher than that on the access link) The relay node schedules the priority of the terminal).

Similarly, when the slot is simultaneously configured as the uplink resource of the backhaul link and the access link (shown as "U" in FIG. 2), referring to FIG. 2, the relay node cannot receive the terminal on the access link. The data sent.

When a resource conflict occurs as shown in Figure 2 on the backhaul link and the access link, the terminal does not know that a conflict has occurred. The configured resource is still used for the corresponding operation. That is, the terminal still uses the configured slot. Receive/transmit data on the access link. However, since the relay node cannot receive/transmit data on the access link, the operation of receiving/transmitting data by the terminal using the slot is not responded, which is an invalid operation, which causes a large energy consumption of the terminal, and May interfere with the communication of other terminals.

For a resource conflict situation that may occur in an IAB scenario, the present application proposes a resource allocation method, a related device, and a system, which can reasonably allocate resources, avoid resource conflicts on a backhaul link and an access link, and even if a conflict occurs. It can also avoid invalid operation of the terminal and reduce the power consumption of the terminal.

In order to better describe the present application, related devices related to the present application are described below.

Referring to Figure 3, there is shown a relay node 20 provided by some embodiments of the present application. As shown in FIG. 3, relay node 20 may include one or more relay node processors 201, memory 202, communication interface 203, transmitter 205, receiver 206, coupler 207, and antenna 208. These components can be connected by bus 204 or other means, and FIG. 3 is exemplified by a bus connection. among them:

Communication interface 203 can be used by relay node 20 to communicate with other communication devices, such as with network devices, terminals, or other relay nodes. Specifically, the communication interface 203 may be a Long Term Evolution (LTE) (4G) communication interface, or may be a communication interface of a 5G or a future new air interface, that is, the relay node 20 and the network device and other relay nodes may be wirelessly returned. The link communication is communicated with the terminal through the wireless access link. The relay node 20 may also be configured with a wired communication interface 203 to support wired communication. For example, a relay node 20 and a network device, and other relay nodes 20 may also include a wired backhaul link. .

In some embodiments of the present application, transmitter 205 and receiver 206 may be considered a wireless modem. The transmitter 205 can be used to perform transmission processing on signals output by the relay node processor 201, such as directional transmission by beamforming. Receiver 206 can be used to receive signals, such as by directional reception. In the relay node 20, the number of the transmitter 205 and the receiver 206 may each be one or more. The antenna 208 can be used to convert electromagnetic energy in a transmission line into electromagnetic waves in free space, or to convert electromagnetic waves in free space into electromagnetic energy in a transmission line. Coupler 207 can be used to divide the mobile pass signal into multiple paths and distribute it to multiple receivers 206. Here, the antenna 208 of the relay node can be implemented as a large-scale antenna array.

Memory 202 is coupled to relay node processor 201 for storing various software programs and/or sets of instructions. In particular, memory 202 can include high speed random access memory, and can also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid state storage devices.

The memory 202 can store an operating system (hereinafter referred to as a system) such as an embedded operating system such as uCOS, VxWorks, or RTLinux. The memory 202 can also store a network communication program that can be used by the relay node to communicate with one or more network devices, one or more terminals, and one or more relay nodes.

In the embodiment of the present application, the relay node processor 201 can be used to read and execute computer readable instructions. Specifically, the relay node processor 201 can be used to invoke a program stored in the memory 202, such as an implementation program of the resource allocation method provided by one or more embodiments of the present application on the relay node 20 side, and execute the program including Instructions.

It can be understood that the relay node 20 can be the relay node 102 in the communication system 100 shown in FIG. 1, and the relay node 20 can be implemented as rTRP or the like.

It should be noted that the relay node 20 shown in FIG. 3 is only one implementation of the embodiment of the present application. In an actual application, the relay node 20 may further include more or fewer components, which are not limited herein.

Referring to FIG. 4, FIG. 4 is a schematic structural diagram of a terminal 30 provided by the present application. As shown in FIG. 4, the terminal 30 may include: one or more processors 301, a memory 302, a communication interface 303, a receiver 305, a transmitter 306, a coupler 307, an antenna 308, a user interface 309, and an input and output module ( The audio input and output module 310, the key input module 311, the display 312, and the like are included. These components can be connected by bus 304 or other means, and FIG. 4 is exemplified by a bus connection. among them:

Communication interface 303 can be used by terminal 30 to communicate with other communication devices, such as with relay nodes, network devices. Specifically, the communication interface 303 may be a Long Term Evolution (LTE) (4G) communication interface, or may be a 5G or a future communication interface of the new air interface, that is, the terminal 30 and the relay node may communicate through the wireless access link. Not limited to the wireless communication interface, the terminal 30 may be configured with a wired communication interface 303, such as a LAN interface.

Transmitter 306 and receiver 305 can be viewed as a wireless modem. In the terminal 30, the number of the transmitter 306 and the receiver 305 may each be one or more. The antenna 308 can be used to convert electromagnetic energy in a transmission line into electromagnetic waves in free space, or to convert electromagnetic waves in free space into electromagnetic energy in a transmission line. The coupler 307 is configured to divide the mobile communication signal received by the antenna 308 into multiple channels and distribute it to a plurality of receivers 305. Here, the antenna 308 can be implemented as a large-scale antenna array.

In addition to the transmitter 306 and receiver 305 shown in FIG. 4, the terminal 30 may also include other communication components such as a GPS module, a Bluetooth module, a Wi-Fi module, and the like. Not limited to the wireless communication signals described above, the terminal 30 can also support other wireless communication signals, such as satellite signals, short wave signals, and the like. Not limited to wireless communication, the terminal 30 can also perform wired communication through a wired network interface such as a LAN interface.

The input and output module can be used to implement interaction between the terminal 30 and the terminal/external environment, and can mainly include an audio input and output module 310, a key input module 311, a display 312, and the like. Specifically, the input and output module may further include: a camera, a touch screen, a sensor, and the like. The input and output modules communicate with the terminal processor 301 through the user interface 309.

Memory 302 is coupled to terminal processor 301 for storing various software programs and/or sets of instructions. In particular, memory 302 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid state storage devices. The memory 302 can store an operating system (hereinafter referred to as a system) such as an embedded operating system such as ANDROID, IOS, WINDOWS, or LINUX. The memory 302 can also store a network communication program that can be used to communicate with one or more additional devices, one or more terminal devices, one or more network devices.

The memory 302 can also store a terminal interface program, which can realistically display the content of the application through a graphical operation interface, and receive control operations of the application through the input control such as menus, dialog boxes, and keys. . In some embodiments of the present application, the memory 302 may be used to store an implementation program of the resource allocation method provided by one or more embodiments of the present application on the terminal 30 side. For implementation of the resource allocation method provided by one or more embodiments of the present application, please refer to the subsequent embodiments.

Terminal processor 301 can be used to read and execute computer readable instructions. Specifically, the terminal processor 301 can be used to invoke a program stored in the memory 312, such as a resource allocation method provided by one or more embodiments of the present application, to implement the program on the terminal 30 side, and execute the instructions included in the program.

It can be understood that the terminal 30 can be the terminal 103 in the communication system 100 shown in FIG. 1, and can be implemented as a mobile device, a mobile station, a mobile unit, a wireless unit, a remote unit, a mobile client, and the like.

It should be noted that the terminal 30 shown in FIG. 4 is only one implementation of the embodiment of the present application. In an actual application, the terminal 30 may further include more or less components, which are not limited herein.

Referring to Figure 5, there is shown a network device 40 provided by some embodiments of the present application. As shown in FIG. 5, network device 40 may include one or more network device processors 401, memory 402, communication interface 403, transmitter 405, receiver 406, coupler 407, and antenna 408. These components can be connected by bus 404 or other means, and FIG. 5 is exemplified by a bus connection. among them:

Communication interface 403 can be used by network device 40 to communicate with other communication devices, such as terminals, relay nodes. Specifically, the communication interface 403 may be a Long Term Evolution (LTE) (4G) communication interface, or may be a communication interface of a 5G or a future new air interface, that is, the network device 40 and the relay node may communicate through a wireless backhaul link. Not limited to the wireless communication interface, the network device 40 may also be configured with a wired communication interface 403 to support wired communication. For example, a backhaul link between one network device 40 and other network devices 40 may be a wired communication connection.

In some embodiments of the present application, transmitter 405 and receiver 406 can be considered a wireless modem. The transmitter 405 can be used to perform transmission processing on signals output by the network device processor 401, such as by beamforming. Receiver 406 can be used to receive signals, such as by directional reception. In the network device 40, the number of the transmitter 405 and the receiver 406 may each be one or more. The antenna 408 can be used to convert electromagnetic energy in a transmission line into electromagnetic waves in free space, or to convert electromagnetic waves in free space into electromagnetic energy in a transmission line. Coupler 407 can be used to divide the mobile pass signal into multiple channels and distribute it to multiple receivers 406. Here, the antenna 408 of the network device can be implemented as a large-scale antenna array.

Memory 402 is coupled to network device processor 401 for storing various software programs and/or sets of instructions. In particular, memory 402 can include high speed random access memory, and can also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid state storage devices.

The memory 402 can store an operating system (hereinafter referred to as a system) such as an embedded operating system such as uCOS, VxWorks, or RTLinux. The memory 402 can also store a network communication program that can be used to communicate with one or more additional devices, one or more terminal devices, one or more network devices.

In the embodiment of the present application, the network device processor 401 can be used to read and execute computer readable instructions. Specifically, the network device processor 401 can be used to invoke a program stored in the memory 402, such as the resource allocation method provided by one or more embodiments of the present application, on the network device 40 side, and execute the instructions included in the program. .

It can be understood that the network device 40 can be the network device 101 in the communication system 100 shown in FIG. 1. The network device 40 can be implemented as a base transceiver station, a wireless transceiver, a basic service set, an extended service set, a NodeB, an eNodeB. , gNodeB, access point or TRP, etc.

It should be noted that the network device 40 shown in FIG. 5 is only one implementation of the embodiment of the present application. In an actual application, the network device 40 may further include more or fewer components, which are not limited herein.

Based on the foregoing IAB application scenario, the communication system 100, the relay node 20, the terminal 30, and the network device 40, in order to reasonably allocate resources and avoid resource conflicts on the backhaul link and the access link, the present application provides a resource allocation. method.

The resource allocation method of the present application involves three types of network elements: a first node, a second node, and a terminal.

The first node is a relay node between the second node and the terminal, that is, the first node may be a relay node in the communication system 100 shown in FIG. 1, or may be the relay node 20 shown in FIG. The second node is a superior node of the first node, and may be a network device (for example, gNB) or other relay node in the communication system 100 shown in FIG. 1, or may be the network device 40 shown in FIG. The terminal is in the signal coverage of the first node, and may be the terminal in the communication system 100 shown in FIG. 1, or may be the terminal 30 shown in FIG.

The communication system formed by the first node, the second node, and the terminal uses the IAB technology. The wireless link between the first node and the second node is a backhaul link, and the wireless link between the first node and the terminal is an access link.

Referring to FIG. 6, FIG. 6 is a schematic flowchart diagram of a resource allocation method provided by the present application. As shown in the figure, the resource allocation method of the present application may include the following steps:

S101. The first node sends the first signaling to the terminal, where the first signaling indicates the first resource and the second resource that are configured to be sent to the terminal.

In this application, the resources allocated to the terminal include two types, one is a first resource, and the other is a second resource, and the terminal is instructed to use different types of resources. The terminal only uses the resources allocated to the terminal under the instruction of the first node, and does not need to know or distinguish the categories of these resources. That is to say, for the resources allocated by the first node to the terminal, the terminal does not perceive the classification of the resources, and the terminal does not make any distinction between the configured resources.

In the following, two types of resources involved in the present application are specifically described.

(1) The first resource.

The first resource is a resource reserved for the access link, that is, the first resource is dedicated to data transmission on the access link. That is, after the first resource is configured to the terminal, the first resource is not used to transmit data between the second node and the first node, that is, the first resource is used for data transmission on the access link, and is not used for back Data transmission on the link.

Here, the first resource includes one or plural resources. The first resource may be a periodic resource or a semi-persistent resource. Among them, the semi-persistent resource is a resource that needs to be used or stopped under the instruction of the first node. Here, when the terminal is configured with the periodic resource, the terminal may transmit data on the resource corresponding to the specified time-frequency domain location according to a certain period; when the terminal is configured with the semi-persistent resource, the terminal sends the first node to receive the data. After the activation command (for example, a media access control-control element (MAC-CE), etc.), the data may be transmitted on the resource corresponding to the specified time-frequency domain location according to a certain period until the terminal A deactivation instruction (such as MAC-CE) sent by the first node is received.

Optionally, the first resource may be specified by a standard protocol, and the indication information of the first resource may be pre-stored in the first node and the second node. Optionally, the first resource may be determined by the first node, may be determined by the second node, and may also be determined by the first node and the second node in cooperation. Here, when the first resource is determined by the first node and/or the second node, the determining process may refer to the subsequent related description, and details are not described herein.

(2) The second resource.

The second resource is a resource that can be flexibly used or configured. Optionally, the second resource may be determined by the first node according to an actual situation, such as an amount of resources required to access the link. Here, the second resource includes one or more resources, which may be periodic resources or semi-persistent resources.

The second resource has two states: an active state and an inactive state. The resource in the active state of the second resource is not used for data transmission of the access link, and the resource in the inactive state is used for data transmission of the access link. That is to say, whether the resource in the second resource can be used for the data transmission of the access link depends on the state in which the resource is located.

In an embodiment, when the second resource is configured for the terminal in step S101, the state of the second resource is inactive by default, that is, the second resource is used by default for data transmission of the access link.

Here, the two processes of configuring the resource for the first node and the resource for the first node are independently performed. Therefore, after the second resource is configured to the terminal in step S101, the second resource may also be configured. The two nodes are configured to the first node, and the resources in the second resource may be occupied by the backhaul link. Briefly, whether the resources in the second resource can be used for the data transmission of the backhaul link depends on whether the second node configures it to the first node.

As described above, when the second resource is configured for the terminal, the second resource is used for data transmission of the access link by default, and the second resource may also be used for data transmission of the backhaul link, that is, resources in the second resource. It is possible that it is occupied by both the access link and the backhaul link, so resource conflicts may occur on the second resource.

Here, the data transmission mentioned above includes uplink data transmission and downlink data transmission. The data transmission on the access link includes: the terminal sends data to the first node, that is, uplink data transmission, for example, a sounding reference signal (SRS) sent by the terminal to the first node, and the terminal transmits to the first node. And the first node sends data to the terminal, that is, downlink data transmission, for example, the first node sends a channel quality information reference signal (CSI-RS) to the terminal, and a synchronization signal block (synchronization signal block) , SSB) or data, etc. The data transmission on the backhaul link includes: the first node sends data to the second node (upstream), and the second node sends data to the first node (downstream).

In this application, the first signaling is used to indicate the first resource and the second resource that are configured to be sent to the terminal, and the content that is carried by the first signaling includes: time-frequency domain configuration information of the first resource, and time-frequency domain configuration of the second resource. information. In a specific implementation, the first signaling may be radio resource control (RRC) signaling, or may be other signaling with resource configuration functions, which is not limited in this application.

S102: Activate some or all of the second resources when a resource conflict may occur between the access link and the backhaul link.

In the present application, the first resource is a resource reserved for the access link, and no resource conflict occurs on the first resource. Therefore, the resource conflicts mentioned later in this application refer to resource conflicts on the second resource.

In an optional embodiment, the resource conflict between the access link and the backhaul link is: resources occupying the same time domain (ie, the same time or time period), and are used for the access link and the backhaul link. For the uplink data transmission/downlink data transmission, the resource conflict between the access link and the backhaul link can be referred to the foregoing FIG. 2 and related description.

When the transmission pressure of the backhaul link is large, that is, the amount of resources required for the backhaul link increases, resource conflicts may occur between the access link and the backhaul link. Optionally, the first node may determine whether a resource conflict may occur between the access link and the backhaul link. Here, the first node may determine that a resource conflict may occur between the access link and the backhaul link when at least one of the following is satisfied:

(1) When the frequency of interaction between the first node and the second node exceeds the first value. For example, the first node frequently receives data sent by the second node, and correspondingly, the first node needs to frequently feed back an acknowledgement (ACK) or a negative acknowledgement (NACK).

(2) When the amount of data transmitted between the first node and the second node exceeds the second value. For example, the first node sends a large amount of data to the second node, or the first node receives a large amount of data sent by the second node.

(3) When the quality of the signal received from the second node received by the first node is lower than the third value. Here, in the case that the beam for transmitting data between the second node and the first node is not the best beam, the quality of the signal received by the first node from the second node is poor, and the beam needs to be re-established. Scanning to determine the best beam, the amount of resources required for beam scanning is large, that is, resource conflicts may occur.

Here, the first value, the second value, and the third value mentioned above may be pre-defined according to actual conditions, or may be dynamically adjusted by the first node when performing the resource allocation method of the present application, which is not limited in this application.

In this application, when a resource conflict may occur between the access link and the backhaul link, the state in which the second resource is located is controlled, so that resources in the second resource are not used for data transmission of the backhaul link to avoid resources. conflict.

Specifically, when a resource conflict may occur between the access link and the backhaul link, some or all of the second resources are activated. Since some or all of the second resources in the active state are not used for transmission of the access link, resource collisions may occur on some or all of the second resources in the active state.

Here, when a resource conflict occurs between the access link and the backhaul link, the terminal does not know that a conflict occurs, and the configured resource is still used to receive/transmit data. This is an invalid operation, which causes a large energy consumption of the terminal. . In this application, when a resource conflict may occur between the access link and the backhaul link, that is, when a resource conflict has not occurred, some or all of the second resources are activated, and the terminal cannot use some or all of the second resources in the active state. Receiving/transmitting data is equivalent to avoiding invalid operation of the terminal, thereby avoiding unnecessary power consumption of the terminal.

In this application, when resource conflicts may occur between the access link and the backhaul link, there are multiple ways to activate some or all of the second resources. Optionally, the first node may activate some or all of the second resources by sending signaling, that is, when a resource conflict may occur between the access link and the backhaul link, the first node sends the second message to the terminal. The second signaling is used to activate some or all of the second resources. Optionally, the first node may send different second signaling to the terminal multiple times to activate more second resources.

Optionally, when the second signaling is used to activate some or all of the second resources, the activation function may be effective once or continuously. The following two situations are respectively described:

(1) The activation mode is effective once.

In this case, some or all of the activated second resources are not used for one data transmission of the access link, and the period of the primary data transmission is after the terminal receives the second signaling reception time, away from the The most recent period of reception of the second signaling.

For example, referring to FIG. 7, in the 5G NR system, it is assumed that each subframe includes 4 slots, and the second node configured by the terminal is the first 2 slots of the subframe 0, and the period is 3 slots. If the terminal receives the second signaling on the first time slot of the subframe 2, the period closest to the reception time is the third and fourth time slots on the subframe 2 (ie, time slots 2, 3), The 3rd and 4th time slots on frame 2 are not used for data transmission of the access link, and subsequent cycles such as the 4th time slot on subframe 3 and the first time slot on subframe 4 can be used for connection. Data transmission into the link.

In the case of (1), optionally, the second signaling includes first information, where the first information is used to indicate some or all of the second resources of the activation, and two possible indication manners are listed below.

(1) The first information includes m bits, and each n bits correspond to one resource group, and the part or all of the second resources include: resources in the resource group corresponding to the n bits of the fifth value. That is, the first information indicates the part or all of the second resource by means of a bit map. Here, the fifth value can be predetermined.

Specifically, the second resource includes multiple resources, and the multiple resources may be grouped, and each group includes one or plural resources. When each group includes only one resource, each n bits in the first information correspond to one resource.

For example, the second resource includes three resources: SRS#1, SRS#2, and SRS#3, and is divided into two resource groups, namely: group1={SRS#1, SRS#2}, group2={ SRS#3}. The first information may include 2 bits, each bit corresponding to one resource group (the first bit corresponds to group1, the second bit corresponds to group2), and the fifth value is "1". Referring to the following table, when the 2 bits in the first information take different values, the second signaling is used to activate different resources.

Bit	meaning
00	Do not activate resources in any group
01	Activate resources in group2
10	Activate resources in group1
11	Activate resources in group1 and group2 at the same time

Table 1

(2) The different values of the first information respectively represent different resource groups, and the part or all of the second resources include: resources in the resource group represented by the value of the first information.

Specifically, the first information may take different values, each value corresponds to one resource group, and the second signaling is used to activate the resource group corresponding to the value taken by the first information. For example, the first information may include 2 bits. Referring to Table 2, when the two bits take different values in the first information, the second signaling is used to activate different resources.

Bit	meaning
00	Do not activate resources in any group
01	Activate resources in group1
10	Activate resources in group2
11	Reserved

Table 2

(2) The activation function is activated in a continuous manner until some or all of the activated second resources are deactivated.

According to the example shown in FIG. 7 above, if the terminal receives the second signaling on the first time slot of the subframe 2, the subsequent period, for example, the third time, the fourth time slot on the subframe 2, and the subframe 3 The fourth time slot, the first time slot on subframe 4, and the like are not used for data transmission of the access link.

Optionally, in the second (2) case, after the first node sends the second signaling to the terminal, the third signaling may also be sent to the terminal. For example, after the second signaling is sent, the transmission pressure of the backhaul link is reduced, that is, the amount of resources required for the backhaul link is reduced, and the possibility of resource conflict between the access link and the backhaul link is reduced. The first node may send the third signaling to the terminal, deactivate the part or all of the second resource, or deactivate at least one of the part or all of the second resources. Through the third signaling, the access link can use the second resource to transmit data, fully utilize resources, and avoid resource waste.

Optionally, the second signaling and the third signaling may be the same signaling, and the activation or deactivation function is identified by the value of the flag bit. The following describes that the second signaling and the third signaling are the same signaling. , the signaling format of the signaling.

Optionally, the second signaling includes a first flag bit and a first information, where the first flag bit is equal to the fourth value, where the first signaling is specifically used to activate part or all of the second resource, where the first information is used. Indicate some or all of the second resource. Here, the fourth value may be predetermined, for example, may be “0”, and the manner in which the first information indicates the part or all of the second resource is the same as in the case of the above (1), and the related description may be referred to. Referring to Table 3 and Table 4, Table 3 and Table 4 respectively show the format contents and corresponding meanings of a possible second signaling.

Bit	meaning
000	Do not activate resources in any group
001	Activate resources in group2
010	Activate resources in group1
011	Activate resources in group1 and group2 at the same time

table 3

Bit	meaning
000	Do not activate resources in any group
001	Activate resources in group1
010	Activate resources in group2
011	Reserved

Table 4

Optionally, the third signaling and the second signaling are the same, including the first flag bit and the first information, where the first flag bit is equal to the seventh value, and is used to indicate that the third signaling is specifically used to deactivate part or all of the The second resource, the first information is used to indicate the part or all of the second resource. Here, the seventh value may be predetermined, for example, may be "1", and the manner in which the first information indicates the part or all of the second resource is the same as in the case of the above (1), and the related description may be referred to. Referring to Table 5 and Table 6, Table 5 and Table 6 respectively show the format contents and corresponding meanings of a possible third signaling.

Bit	meaning
100	Do not activate resources in any group
101	Deactivate resources in group2
110	Deactivate resources in group1
111	Deactivate resources in group1 and group2 at the same time

table 5

Bit	meaning
100	Do not activate resources in any group
101	Deactivate resources in group1
110	Deactivate resources in group2
111	Reserved

Table 6

Optionally, in the specific implementation, the second signaling and the third signaling mentioned above may be downlink control information (DCI), or may be other signaling with an activation/deactivation resource function. There are no restrictions on the application.

As described above, the first node divides the resources allocated to the terminal into the first resource and the second resource, where the first resource is dedicated to data transmission on the access link. The resource conflict occurs on the first resource, and the second resource is a flexible resource. When a resource conflict may occur, some or all of the second resources are activated, and some or all of the activated second resources are not used for data transmission on the access link. To avoid resource conflicts on the second resource, and to avoid invalid operation of the terminal and reduce terminal power consumption.

In the resource allocation method shown in FIG. 6, when a resource conflict may occur between the access link and the backhaul link, some or all of the second resources are activated, and after some time, the part or all of the second resources may be deactivated. Or, at least one of the part or all of the second resources may be deactivated. That is, after a period of time, the terminal can resume data transmission on some resources that have been activated. After the data transmission is resumed, the power used by the terminal to transmit data using these once activated resources affects the efficiency and quality of the data transmitted by the terminal.

In the following, some or all of the second resources are activated, and after some time, the part or all of the second resources are deactivated as an example for explanation. Optionally, after the data transmission is resumed, the sending power when the terminal sends the data to the first node by using the part or all resources is determined according to at least the closed loop power control value.

For example, in the SRS sending process, when the terminal sends the SRS to the first node by using the part or all resources, the sending power on the corresponding resource

Can be calculated by Equation 1:

among them,

The value of the value is the minimum of the two elements in the formula 1.

Here, a resource for transmitting an SRS is referred to as an SRS resource. In Equation 1, i is a slot index corresponding to the current SRS resource,

The maximum transmit power supported by the terminal,

a parameter configured for the SRS resource by the first node (can be updated by the first node and sent to the terminal in real time),

For the bandwidth of the SRS resource, PL(k1) is the path loss calculated according to the reference signal k1.

For closed loop power control values.

among them,

That is, the closed-loop power control value can be obtained by means of cumulative superposition, that is, the first node does not directly configure the current terminal for the terminal when configuring parameters for the terminal.

But configure

Change value, such as +1dB, +2dB or -3dB, etc., by the terminal according to the previous

And the change value is calculated and current

In an alternative embodiment, the closed loop power control value can be determined in at least three ways:

(1) The closed loop power control value is the same as the closed loop power control value of the PUSCH. Here, the closed loop power control value of the PUSCH is configured by the first node for the terminal.

(2) The closed-loop power control value and the part or all of the resources are not used for the data transmission of the access link, that is, the closed-loop power control value before being activated is the same.

(3) The closed-loop power control value is set to 0 when the part or all of the resources are not used for data transmission of the access link, that is, when the duration of the active state is greater than the sixth value. Here, the sixth value may be set by the terminal autonomously, or may be pre-arranged by the first node and the terminal, which is not limited in this application.

Here, after the resource is in an active state for a long period of time, after the data transmission is resumed on the resource, the previous closed loop power control value may not be adapted to the current data transmission scenario. After the closed loop power control value is set to 0, the closed loop power control value is jointly adjusted between the terminal and the first node, so that the sending power when the terminal uses the resource to send data to the first node is adapted to the current scene or the current The actual situation.

The closed-loop power control value can be adjusted in the above three manners, so that the transmission power of the terminal when using the activated resource to send data to the first node is adapted to the current scenario or the current actual situation, and the terminal can flexibly control the terminal to use the resource to send. Transmit power at the time of data.

The foregoing FIG. 6 details the resource allocation method of the present application, wherein the first resource is a resource dedicated to data transmission of the access link, and cannot be used for data transmission of the backhaul link. Therefore, the network element on the backhaul link, that is, the second node, must know the first resource allocated to the terminal, so as to ensure that the backhaul link does not occupy the first resource. Through the determining manner or the determining process of the first resource, the second node may learn the first resource, and several determining manners of the first resource may be described in detail below.

(1) The first resource is specified by the standard protocol, and the indication information of the first resource is pre-stored in the first node and the second node.

Specifically, the first resource may be pre-defined by a standard protocol. For example, the first time slot of the first subframe in each radio frame may be used as the first resource. Optionally, the first node and the second node may pre-store the indication information of the first resource, for example, the indication information of the first resource may be directly written into the respective configuration file when the first node and the second node are manufactured. in. Optionally, the first node and the second node may further obtain indication information of the first resource from the network server.

(2) The first resource is determined by the first node.

In case the first resource is determined by the first node, the first node needs to notify the second node of the determined first resource. The resource allocation method shown in FIG. 6 is combined, that is, before the first node sends the first signaling to the second node, the following steps shown in FIG. 8 may also be included:

S201. The first node sends fourth signaling to the second node, where the fourth signaling is used to indicate that the first node is a resource configured by the terminal.

Here, the resources configured by the first node for the terminal may be determined by the first node according to actual conditions, such as the amount of resources required to access the link.

Specifically, the fourth signaling is used to indicate that the first node is a resource configured by the terminal. Optionally, the content that is carried by the fourth signaling may include: the first node is the time-frequency domain configuration information corresponding to the resource configured by the terminal, or the first node is the time domain configuration information corresponding to the resource configured by the terminal. Here, when the fourth signaling only carries the time domain configuration information, the second node does not use all the resources corresponding to the time domain to transmit data, so as to reserve the resources configured by the first node for the terminal to the access link.

Optionally, in a specific implementation, the fourth signaling may be sent to the second node by using a physical uplink shared channel (PUSCH).

S202. The second node sends a fifth signaling to the first node, where the fifth signaling is used by the first node to determine, as the first resource, a resource to be configured for the terminal.

Here, the second node sends the fifth signaling to the first node, which is equivalent to the second node confirming that the resource configured by the first node is the first resource, that is, the first node performs a positive reply. In a specific implementation, the fifth signaling may be an ACK.

In another optional embodiment, the second node may also confirm, in an implicit manner, the resource configured by the first node as the terminal as the first resource. Specifically, the first node sends the fourth signaling to the second node, and after the second node receives the fourth signaling, the second node does not send the first node for a period of time (the period can be measured by a timer) Any information, if the first node does not receive any information sent by the second node within the period of time, the resource configured by the first node for the terminal may be used as the first resource.

(3) The first resource is determined by negotiation between the first node and the second node.

In the case that the first resource is determined by the first node and the second node, in combination with the resource allocation method shown in FIG. 6, before the first node sends the first signaling to the second node, the method may further include the method shown in FIG. The following steps:

S301. The first node sends fourth signaling to the second node, where the fourth signaling is used to indicate that the first node is a resource configured by the terminal.

Here, step S301 is the same as step S201 in the above-described (2) case, and reference can be made to the related description.

S302. The second node sends a fifth signaling to the first node, where the fifth signaling is used to indicate that the second node is a resource configured by the terminal, and is further configured to indicate that the first resource is a resource configured by the second node to be a terminal. The resource configured by the second node for the terminal is obtained by the second node according to the resource configuration configured by the first node for the terminal.

Specifically, after receiving the fourth signaling sent by the first node, the second node can obtain the resource configured by the first node for the terminal. The second node may slightly modify or adjust the resources configured by the first node for the terminal, as the resource configured by the second node, and then notify the first node by using the fifth signaling.

In a specific implementation, the fifth signaling may be a MAC-CE or an RRC signaling, which is not limited in this application.

The fifth signaling may have multiple formats and may carry different contents. The following two formats of the fifth signaling may be described:

(1) The fifth signaling includes a domain, each of which indicates a resource in the first resource. The number of resources configured by the first node in the fourth signaling for the terminal is also a. When the jth field takes an eighth value (for example, 0), the fifth signaling is used to indicate the jth resource in the first resource, and the first node in the fourth signaling is the jth in the resource configured by the terminal. The resources are the same. When the jth field takes the ninth value, the ninth value is used to indicate the time domain configuration information of the jth resource in the first resource. j ≤ a, and l, j are positive integers.

For example, the fourth signaling carries the time domain configuration information of the four resources. If the second node considers that the time domain configuration of the first and third resources needs to be adjusted, the fifth signaling may carry the following content: {I_srs1,0 I_srs3,0}, where I_srs1 and I_srs3 are time domain configuration information of the first and third resources configured by the second node for the terminal, and 0 is the time domain of the second and fourth resources configured by the second node for the terminal. The configuration information and the fourth signaling in the fourth signaling are the same for the second and fourth resources configured by the terminal.

(2) The fifth signaling carries: the kth sequence number and the kth time frequency domain configuration information.

The fifth signal is used to indicate that the resource configured by the second node is: the resource configured in the first node is the terminal, and the time-frequency domain configuration information of the k-th resource is modified to the k-th time-frequency domain configuration information. The time-frequency domain configuration information of the remaining resources is unchanged.

Optionally, after receiving the fifth signaling sent by the second node, the first node may directly use the resource configured by the second node for the terminal as the first resource. In this case, the first node may send an ACK to the second node after step S302 to confirm that the resource configured by the second node for the terminal is the first resource, that is, a positive reply to the second node. In this case, the first node may also confirm, in an implicit manner, the resource configured by the second node for the terminal as the first resource, and the implicit confirmation manner is similar to that in step S202 shown in FIG. 8 above. Referring to the related description, it will not be described here.

Optionally, after receiving the fifth signaling sent by the second node, the first node may send the signaling to the second node again if the resource configured by the second node is not suitable or needs to be adjusted. Informing the second node that the first resource that the first node considers appropriate is equivalent to repeating the above steps S301 and S302 until the first node and the second node reach a consensus on the first resource.

The foregoing describes in detail the possible three determining manners or determining processes of the first resource, and is not limited to the foregoing three determining manners. The first resource may be determined by other methods, for example, the first resource may be determined by the second node. After the first node is notified.

Referring to FIG. 10, FIG. 10 shows a first node and a terminal provided by the present application. The first node may be the relay node or the first node in the foregoing communication system or method embodiment, and the terminal may be the terminal in the foregoing communication system or method embodiment, which are respectively described below.

As shown in FIG. 10, the first node 50 may include a transmitting unit 501 and an activation unit 502.

The sending unit 501 is configured to send the first signaling to the terminal, where the first signaling indicates the first resource and the second resource that are configured to the terminal; the first node is a relay node between the second node and the terminal; Used for data transmission on the access link, not for data transmission on the backhaul link;

The activation unit 502 is configured to activate some or all of the second resources when the access link and the backhaul link may have a resource conflict, and the activated part or all of the second resources are not used for data transmission of the access link; The link is a link between the first node and the terminal, and the backhaul link is a link between the first node and the second node.

Optionally, the first node 50 may further include a determining unit 503, configured to determine whether a resource conflict may occur between the access link and the backhaul link before activating some or all of the second resources.

Optionally, the sending unit 501 is further configured to: when a resource conflict occurs between the access link and the backhaul link, send the second signaling to the terminal, where the second signaling is used to activate part or all of the second resource, where Some or all of the activated second resources are not used for data transmission of the access link; the access link is a link between the first node and the terminal, and the return link is a chain between the first node and the second node road.

Here, the signaling format and content of the second signaling may refer to the foregoing related description.

Optionally, the sending unit 501 is further configured to send, to the terminal, third signaling, where the third signaling is used to deactivate part or all of the second resources.

Here, the signaling format and content of the third signaling may refer to the foregoing related description.

Optionally, the sending unit 501 is further configured to: before sending the first signaling to the terminal, send the fourth signaling to the second node, where the fourth signaling is used to indicate that the first node is a resource configured by the terminal; The first node 50 may further include a receiving unit 504, configured to receive a fifth signaling sent by the second node, where the fifth signaling is used by the first node to determine the first resource.

Here, regarding the signaling format and content of the fourth signaling and the fifth signaling, refer to the foregoing related description.

As shown in FIG. 10, the terminal 60 may include a receiving unit 601 and an activation unit 602.

The receiving unit 601 is configured to receive first signaling sent by the first node, where the first signaling indicates a first resource and a second resource that are configured to be sent to the terminal; and the first node is a relay between the second node and the terminal. a node; the first resource is used for data transmission on the access link, and is not used for data transmission on the backhaul link;

The activation unit 602 is configured to activate some or all of the second resources when the access link and the backhaul link may have a resource conflict, and the activated part or all of the second resources are not used for data transmission of the access link; The link is a link between the first node and the terminal, and the backhaul link is a link between the first node and the second node.

Optionally, the receiving unit 601 is further configured to: when the access link and the backhaul link may have a resource conflict, receive the second signaling sent by the first node, where the second signaling is used to activate part or all The second resource, the activated part or all of the second resource is not used for data transmission of the access link; the access link is a link between the first node and the terminal, and the return link is the first node and the second node The link between.

Here, the signaling format and content of the second signaling may refer to the foregoing related description.

Optionally, the receiving unit 601 is further configured to receive the third signaling sent by the first node, where the third signaling is used to deactivate some or all of the second resources.

Here, the signaling format and content of the third signaling may refer to the foregoing related description.

Optionally, the terminal 60 may further include a sending unit 603, where the sending power of the sending unit to the first node using the deactivated part or all of the second resources is determined according to at least the closed loop power control value; the closed loop power control value and The closed-loop power control value of the PUSCH is the same, or is the same as the closed-loop power control value before the data transmission of the part or all of the second resources is not used for the access link, or the second resource is not used in the part or all of the second resource. In the case where the duration of the data transmission of the access link is greater than the sixth value, the closed loop power control value is set to zero.

For a specific implementation of the respective functional units included in the first node 50, reference may be made to the foregoing FIG. 6 , FIG. 8 and FIG. 9 and related descriptions. For specific implementations of the functional units included in the terminal 60, reference may be made to the foregoing FIG. 6 and FIG. 8 . FIG. 9 and related descriptions are not described herein again, and are not described herein again.

In summary, when implementing the technical solution provided by the present application, when a relay node (ie, a first node) allocates resources for a terminal, the resource is divided into two types: a first resource and a second resource, and the first resource is reserved for the access chain. The resource of the path, the second resource is a flexible resource, and when some resource conflict may occur on the access link and the backhaul link, some or all of the second resources are activated, and some or all of the activated second resources are not used for the access link. The data transmission avoids resource conflicts between the access link and the backhaul link. After the relay node activates part or all of the second resources, the part or all of the second resources may also be deactivated, and some or all of the deactivated second resources are used for data transmission of the access link, and the configured configuration may be fully utilized. Resources. In addition, the transmission power of the terminal transmitting data to the first node using part or all of the deactivated second resources may be flexibly controlled to adapt to the current scene or the current actual situation.

One of ordinary skill in the art can understand all or part of the process of implementing the above embodiments, which can be completed by a computer program to instruct related hardware, the program can be stored in a computer readable storage medium, when the program is executed The flow of the method embodiments as described above may be included. The foregoing storage medium includes various media that can store program codes, such as a ROM or a random access memory RAM, a magnetic disk, or an optical disk.

Claims (48)

1. A resource allocation method, comprising:

   The first node sends a first signaling to the terminal, where the first signaling indicates a first resource and a second resource that are configured to the terminal; the first node is a relay between the second node and the terminal a node; the first resource is used for data transmission on the access link, and is not used for data transmission on the backhaul link;

   And when a resource conflict may occur between the access link and the backhaul link, part or all of the second resource is activated, and the activated part or all of the second resource is not used for data transmission of the access link;

   The access link is a link between the first node and the terminal, and the backhaul link is a link between the first node and the second node.
2. The method according to claim 1, wherein at least one of the following is included when a resource conflict may occur between the access link and the backhaul link:

   When the frequency of interaction between the first node and the second node exceeds a first value;

   When the amount of data transmitted between the first node and the second node exceeds a second value;

   And when the quality of the signal received by the first node from the second node is lower than a third value.
3. The method according to claim 1 or 2, wherein before the activating part or all of the second resource, the method further comprises: the first node determining the access link and the backhaul chain Whether a resource conflict may occur on the road.
4. The method according to claim 3, wherein the first node determines whether a resource conflict may occur between the access link and the backhaul link, and specifically includes at least one of the following:

   Determining that a resource conflict may occur between the access link and the backhaul link when an interaction frequency between the first node and the second node exceeds a first value;

   Determining that a resource conflict may occur between the access link and the backhaul link when the amount of data transmitted between the first node and the second node exceeds a second value;

   When the quality of the signal received by the first node from the second node is lower than a third value, it may be determined that a resource conflict may occur between the access link and the backhaul link.
5. The method according to any one of claims 1-4, wherein when a resource conflict occurs between the access link and the backhaul link, part or all of the second resources are activated, including:

   When a resource conflict may occur between the access link and the backhaul link, the first node sends a second signaling to the terminal, and the second signaling is used to activate the part or all of the Two resources.
6. The method of claim 5 wherein:

   The activated part or all of the second resource is not used for one data transmission of the access link; part or all of the activated second resources are periodic resources or semi-persistent resources; The period is the period closest to the reception timing of the second signaling after the reception timing of the second signaling.
7. The method of claim 5 wherein:

   The second signaling includes a first flag bit and a first information, where the first flag bit is equal to a fourth value, and is used to indicate that the first signaling is specifically used to activate the part or all of the second resource. The first information is used to indicate the part or all of the second resources.
8. The method of claim 7 wherein:

   The first information includes m bits, and each n bits correspond to one resource group, and the part or all of the second resources include: resources in a resource group corresponding to n bits of the fifth value;

   or,

   The different values of the first information respectively represent different resource groups, and the part or all of the second resources include: resources in the resource group represented by the value of the first information.
9. The method according to any one of claims 5, 7 or 8, wherein after the first node sends the second signaling to the terminal, the method further includes:

   The first node sends third signaling to the terminal, where the third signaling is used to deactivate the part or all of the second resources.
10. The method of claim 9 wherein:

    The third signaling includes a second flag bit and a second information, where the second flag bit is equal to a fifth value, and is used to indicate that the third signaling is specifically used to deactivate the part or all resources, The second information is used to indicate the part or all of the second resource.
11. A method according to any one of claims 1 to 10, wherein

    The indication information of the first resource is stored in the first node.
12. The method according to any one of claims 1 to 10, wherein before the first node sends the first signaling to the terminal, the method further includes:

    The first node sends a fourth signaling to the second node, where the fourth signaling is used to indicate that the first node is a resource configured by the terminal;

    The first node receives the fifth signaling sent by the second node, and the fifth signaling is used by the first node to determine the first resource.
13. The method of claim 12 wherein:

    The fifth signaling is specifically used by the first node as a resource configured by the terminal;

    or,

    The fifth signaling is specifically used to indicate that the second node is a resource configured by the terminal, and is further configured to indicate that the first resource is a resource configured by the second node for the terminal; The resource configured by the terminal is obtained by the second node according to the resource configured by the first node for the terminal.
14. A resource allocation method, comprising:

    The terminal receives the first signaling sent by the first node, where the first signaling indicates a first resource and a second resource that are configured to the terminal; the first node is a middle node between the second node and the terminal a relay node; the first resource is used for data transmission on the access link, and is not used for data transmission on the backhaul link;

    And when a resource conflict may occur between the access link and the backhaul link, part or all of the second resource is activated, and the activated part or all of the second resource is not used for data transmission of the access link; The access link is a link between the first node and the terminal, and the backhaul link is a link between the first node and the second node.
15. The method according to claim 14, wherein at least one of the following is included when the access link and the backhaul link may have a resource conflict:

    When the frequency of interaction between the first node and the second node exceeds a first value;

    When the amount of data transmitted between the first node and the second node exceeds a second value;

    And when the quality of the signal received by the first node from the second node is lower than a third value.
16. The method according to claim 14 or 15, wherein when a resource conflict occurs between the access link and the backhaul link, part or all of the second resources are activated, including:

    When the access link and the backhaul link may have a resource conflict, the terminal receives the second signaling sent by the first node, and the second signaling is used to activate the part or all of the Second resource.
17. The method of claim 16 wherein:

    The activated part or all of the second resource is not used for one data transmission of the access link; part or all of the activated second resources are periodic resources; the period in which the primary data transmission is located is After the receiving moment of the second signaling, the period closest to the receiving moment of the second signaling.
18. The method of claim 16 wherein:

    The second signaling includes a first flag bit and a first information, where the first flag bit is equal to a fourth value, and is used to indicate that the first signaling is specifically used to activate the part or all of the second resource. The first information is used to indicate the part or all of the second resources.
19. The method of claim 18, wherein

    The first information includes m bits, and each n bits correspond to one resource group, and the part or all of the second resources include: resources in a resource group corresponding to n bits of the fifth value;

    or,

    The different values of the first information respectively represent different resource groups, and the part or all of the second resources include: resources in the resource group represented by the value of the first information.
20. The method according to any one of claims 16, 18 or 19, wherein after the terminal receives the second signaling sent by the first node, the method further includes:

    The terminal receives the third signaling sent by the first node, where the third signaling is used to deactivate the part or all of the second resources.
21. The method of claim 20 wherein:

    The third signaling includes a second flag bit and a second information, where the second flag bit is equal to a fifth value, and is used to indicate that the third signaling is specifically used to deactivate the part or all of the second resources. The second information is used to indicate the part or all of the second resource.
22. A method according to claim 20 or 21, wherein

    Transmitting power of the terminal to transmit data to the first node by using the part or all of the second resources is determined according to at least a closed loop power control value;

    The closed loop power control value is the same as the closed loop power control value of the PUSCH, or the same as the closed loop power control value before the data transmission of the part or all of the second resources is not used for the access link, or The closed loop power control value is set to 0 if the duration of the data transmission of the part or all of the second resources not used for the access link is greater than the sixth value.
23. A first node, comprising:

    a sending unit, configured to send a first signaling to the terminal, where the first signaling indicates a first resource and a second resource that are configured to the terminal; the first node is between the second node and the terminal a relay node; the first resource is used for data transmission on the access link, and is not used for data transmission on the backhaul link;

    An activation unit, configured to activate part or all of the second resource when a resource conflict may occur between the access link and the backhaul link, where part or all of the activated second resource is not used in the access chain Data transmission of the path; the access link is a link between the first node and the terminal, and the backhaul link is a link between the first node and the second node .
24. The first node according to claim 23, wherein at least one of the following is included when a resource conflict may occur between the access link and the backhaul link:

    When the frequency of interaction between the first node and the second node exceeds a first value;

    When the amount of data transmitted between the first node and the second node exceeds a second value;

    And when the quality of the signal received by the first node from the second node is lower than a third value.
25. The first node according to claim 23 or 24, further comprising a determining unit, configured to determine the access link and the back before activating part or all of the second resource Whether a resource conflict may occur on the link.
26. The first node according to claim 25, wherein the determining unit is specifically used for at least one of the following:

    Determining that a resource conflict may occur between the access link and the backhaul link when an interaction frequency between the first node and the second node exceeds a first value;

    Determining that a resource conflict may occur between the access link and the backhaul link when the amount of data transmitted between the first node and the second node exceeds a second value;

    When the quality of the signal received by the first node from the second node is lower than a third value, it may be determined that a resource conflict may occur between the access link and the backhaul link.
27. A first node according to any of claims 23-26, characterized in that

    The sending unit is further configured to: send a second signaling to the terminal when a resource conflict may occur between the access link and the backhaul link;

    The activation unit is specifically configured to activate the part or all of the second resources by using the second signaling.
28. The first node of claim 27, wherein

    The activated part or all of the second resource is not used for one data transmission of the access link; part or all of the activated second resources are periodic resources or semi-persistent resources; The period is the period closest to the reception timing of the second signaling after the reception timing of the second signaling.
29. The first node of claim 27, wherein

    The second signaling includes a first flag bit and a first information, where the first flag bit is equal to a fourth value, and is used to indicate that the first signaling is specifically used to activate the part or all of the second resource. The first information is used to indicate the part or all of the second resources.
30. The first node of claim 29, wherein

    The first information includes m bits, and each n bits correspond to one resource group, and the part or all of the second resources include: resources in a resource group corresponding to n bits of the fifth value;

    or,

    The different values of the first information respectively represent different resource groups, and the part or all of the second resources include: resources in the resource group represented by the value of the first information.
31. A first node according to any one of claims 27, 29 or 30, wherein

    The sending unit is further configured to send third signaling to the terminal, where the third signaling is used to deactivate the part or all of the second resources.
32. A first node according to claim 31, wherein

    The third signaling includes a second flag bit and a second information, where the second flag bit is equal to a fifth value, and is used to indicate that the third signaling is specifically used to deactivate the part or all resources, The second information is used to indicate the part or all of the second resource.
33. A first node according to any of claims 23-32, characterized in that

    The indication information of the first resource is stored in the first node.
34. A first node according to any of claims 23-32, characterized in that

    The sending unit is further configured to: before sending the first signaling to the terminal, send fourth signaling to the second node, where the fourth signaling is used to indicate that the first node is the terminal Configured resources;

    The first node further includes a receiving unit, where the receiving unit is configured to receive a fifth signaling sent by the second node, where the fifth signaling is used by the first node to determine the first resource.
35. A first node according to claim 34, wherein

    The fifth signaling is specifically used by the first node as a resource configured by the terminal;

    or,

    The fifth signaling is specifically used to indicate that the second node is a resource configured by the terminal, and is further configured to indicate that the first resource is a resource configured by the second node for the terminal; The resource configured by the terminal is obtained by the second node according to the resource configured by the first node for the terminal.
36. A terminal, comprising:

    a receiving unit, configured to receive first signaling sent by the first node, where the first signaling indicates a first resource and a second resource that are configured to the terminal; the first node is a second node and the terminal a relay node between the first resource for data transmission on the access link and not for data transmission on the backhaul link;

    An activation unit, configured to activate part or all of the second resource when a resource conflict may occur between the access link and the backhaul link, where part or all of the activated second resource is not used in the access chain Data transmission of the path; the access link is a link between the first node and the terminal, and the backhaul link is a link between the first node and the second node .
37. The terminal according to claim 36, wherein at least one of the following is included when a resource conflict may occur between the access link and the backhaul link:

    When the frequency of interaction between the first node and the second node exceeds a first value;

    When the amount of data transmitted between the first node and the second node exceeds a second value;

    And when the quality of the signal received by the first node from the second node is lower than a third value.
38. A terminal according to claim 36 or 37, characterized in that

    The receiving unit is further configured to: when a resource conflict occurs between the access link and the backhaul link, receive the second signaling sent by the first node;

    The activation unit is specifically configured to activate the part or all of the second resources by using the second signaling.
39. The terminal according to claim 38, characterized in that

    The activated part or all of the second resource is not used for one data transmission of the access link; part or all of the activated second resources are periodic resources; the period in which the primary data transmission is located is After the receiving moment of the second signaling, the period closest to the receiving moment of the second signaling.
40. The terminal according to claim 38, characterized in that

    The second signaling includes a first flag bit and a first information, where the first flag bit is equal to a fourth value, and is used to indicate that the first signaling is specifically used to activate the part or all of the second resource. The first information is used to indicate the part or all of the second resources.
41. The terminal according to claim 40, characterized in that

    The first information includes m bits, and each n bits correspond to one resource group, and the part or all of the second resources include: resources in a resource group corresponding to n bits of the fifth value;

    or,

    The different values of the first information respectively represent different resource groups, and the part or all of the second resources include: resources in the resource group represented by the value of the first information.
42. A terminal according to any one of claims 38, 40 or 41, wherein

    The receiving unit is further configured to: after receiving the second signaling sent by the first node, receive third signaling sent by the first node, where the third signaling is used to deactivate the Part or all of the second resource.
43. A terminal according to claim 42, wherein said terminal is characterized in that

    The third signaling includes a second flag bit and a second information, where the second flag bit is equal to a fifth value, and is used to indicate that the third signaling is specifically used to deactivate the part or all of the second resources. The second information is used to indicate the part or all of the second resource.
44. The terminal according to claim 42 or 43, wherein the terminal further comprises a sending unit,

    Transmitting power of the data sent by the sending unit to the first node by using the part or all of the second resources is determined according to at least a closed loop power control value;

    The closed loop power control value is the same as the closed loop power control value of the PUSCH, or the same as the closed loop power control value before the data transmission of the part or all of the second resources is not used for the access link, or The closed loop power control value is set to 0 if the duration of the data transmission of the part or all of the second resources not used for the access link is greater than the sixth value.
45. A circuit system, comprising:

    Processing circuit for:

    Generating a first signaling, where the first signaling is used to indicate a first resource and a second resource that are configured to be used by the terminal; the first resource is used for data transmission on the access link, and is not used on the backhaul link. Data transmission

    And when a resource conflict may occur between the access link and the backhaul link, part or all of the second resource is activated, and the activated part or all of the second resource is not used for data transmission of the access link;

    The access link is a link between the first node and the terminal, and the backhaul link is a link between the first node and the second node.
46. A circuit system comprising a processing circuit and a receiving circuit,

    The receiving circuit is configured to receive first signaling sent by the first node, where the first signaling indicates a first resource and a second resource that are configured to the terminal; and the first resource is used for an access link The data transmission on the data transmission is not used for the transmission on the backhaul link;

    The processing circuit is configured to activate some or all of the second resources when the access link and the backhaul link may have a resource conflict, and the activated part or all of the second resources are not used for the connection Data transmission into the link;

    The access link is a link between the first node and a terminal, and the backhaul link is a link between the first node and a second node.
47. A computer readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1-13.
48. A computer readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 14-22.

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