Device communication method and apparatus

Abstract

The present application provides a device communication method and apparatus, which determines a first resource from a candidate resource set through a relay device, sends first control information to the first resource, and sends second control information to the second resource. Since the relay device indicates the location information of the scheduled remote device and the second resource in the first control information, the remote device can receive the second control information at its corresponding second resource, thereby reducing the power consumption of the remote device.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a device communication method and apparatus. Background Art

[0002] Device-to-Device (D2D) technology enables direct communication between devices, allowing them to send data and control information directly without going through a base station. One application scenario involves relaying data and control information between a base station and a remote device (remote UE) using a relay device (relay UE).

[0003] In the relay scenario, the relay device can schedule the resources of the remote device. In the prior art, the resource pools of the physical sidelink control channel (PSCCH) and the physical sidelink shared channel (PSSCH) can be divided by time division multiplexing and periodically configured, with one PSCCH and one PSSCH included in one period. The PSCCH and PSSCH resource pools can also be divided by frequency division multiplexing, that is, within the available D2D available frequency band, a part of the frequency resources are used as the PSCCH resource pool, and the remaining frequency resources are used as the PSSCH resource pool; in this way, the device data can be transmitted using the PSCCH resources. PSCCH and PSSCH are used to transmit control information and data, respectively. According to the existing technology, the relay device can randomly select resources in PSCCH and PSSCH, transmit sidelink control information (SCI) through the selected PSCCH resources, and transmit data (Data) through the selected PSSCH. The remote device attempts to demodulate the sidelink control information in the PSCCH through blind detection to determine whether it is scheduled and obtain its scheduling information.

[0004] However, using the existing technology, the remote device needs to blindly detect the SCI in the PSCCH resource pool, and the blind detection consumes a lot of power. Summary of the Invention

[0005] The present application provides a device communication method and apparatus to reduce power consumption of remote devices.

[0006] The first aspect of the present application provides a device communication method, including: a relay device determines a first resource from a candidate resource set, the relay device sends first control information on the first resource, the first control information is used to indicate information of a remote device scheduled by the relay device and location information of a second resource; the relay device sends second control information of the remote device scheduled by the relay device on the second resource based on the location information of the second resource. The remote device can determine whether it is scheduled through the first control information received on the first resource, and if it is scheduled, the location information of its corresponding second resource, and receive its corresponding second control information on its corresponding second resource to obtain its scheduling information, which is equivalent to the remote device blindly detecting the first control information. After detecting the first control information, the remote device can directly determine the location information of the second resource used to transmit the second control information, that is, there is no need to blindly detect the resources between the first resource and the second resource, thereby narrowing the blind detection range of the remote device and reducing the power consumption of the remote device.

[0007] In one possible design, before the relay device determines the first resource from the candidate resource set, the process further includes: the relay device obtains configuration information of a resource pool, where the resource pool includes the candidate resource set.

[0008] In one possible design, the relay device obtains the configuration information of the resource pool, including: the relay device receives the configuration information of the resource pool sent by the base station.

[0009] In one possible design, the candidate resource set is any of the following:

[0010] One or more resources corresponding to the position of at least one RB in the middle of the resource pool; one or more resources corresponding to the position at the frequency resource position where the synchronization signal is located and at a first preset time distance from the synchronization signal; one or more resources corresponding to the position that appears at a preset period at a second preset time distance offset from direct frame No. 0 or system frame No. 0.

[0011] In one possible design, before the relay device determines the first resource from the candidate resource set, it also includes: the relay device sends first indication information to the remote device, where the first indication information is used to indicate location information of the candidate resource set.

[0012] In one possible design, the location information of the candidate resource set includes the location information of the initial resource and the period of the candidate resource.

[0013] In one possible design, the relay device sends first indication information to the remote device, including: the relay device sends the first indication information to the remote device through a physical bypass broadcast channel PSBCH; or, the relay device sends the first indication information to the remote device through a discovery message; or, the relay device sends the first indication message to the remote device through a radio resource control RRC message.

[0014] In one possible design, before the relay device determines the first resource from the candidate resource set, the process further includes: the relay device determines the candidate resource set from a preconfigured resource pool.

[0015] In one possible design, before the relay device sends the second control information using the second resource, the relay device further includes: scrambling the second control information using identification information of the remote device.

[0016] In one possible design, the second control information also includes second indication information, and the second indication information is used to indicate that the second control information is control information for scheduling transmission resources of a relay device; or, the second control information is control information for scheduling transmission resources of a remote device.

[0017] In one possible design, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in the bypass control information SCI corresponding to the first control information; or, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in the MAC CE of the data corresponding to the first control information; or, the information of the remote device scheduled by the relay device is carried in the bypass control information SCI corresponding to the first control information, and the location information of the second resource is carried in the MAC CE of the data corresponding to the first control information.

[0018] In a possible design, the demodulation reference signal DMRS, preamble sequence or cyclic redundancy check CRC used by the bypass control information SCI corresponding to the first control information and the second control information are different.

[0019] In a second aspect, the present application provides a device communication method, comprising:

[0020] The remote device receives first control information at the first resource, where the first control information is used to indicate information of the remote device scheduled by the relay device; and determines a second resource based on the information of the remote device scheduled by the relay device.

[0021] The remote device receives the second control information on the second resource. The remote device receives its second control information on the second resource, which may be preconfigured or carried in the first control information. After determining that it is scheduled, the remote device receives its second control information on the second resource, thereby reducing the blind detection range of the remote device and reducing the power consumption of the remote device.

[0022] In one possible design, the first control information is further used to indicate location information of the second resource;

[0023] The remote device determines the second resource according to the information of the remote device scheduled by the relay device, including:

[0024] The remote device determines the second resource according to the location information of the second resource.

[0025] In one possible design, the remote device determines the second resource based on the information of the remote device scheduled by the relay device, including: if the information of the remote device scheduled by the relay device includes an identifier of the remote device, the remote device determines the second resource according to a preset rule.

[0026] In one possible design, the remote device determines the second resource according to a preset rule, including: the remote device determines the second resource according to pre-configured location information of the second resource.

[0027] In one possible design, before the remote device determines the second resource based on the pre-configured location information of the second resource, the further step includes: the remote device receives the pre-configured location information of the second resource sent by the relay device.

[0028] In one possible design, the remote device receives the first control information on the first resource, including: the remote device detects the first control information on a candidate resource corresponding to a candidate resource set, where the candidate resource set includes the first resource.

[0029] In one possible design, before the remote device detects the first control information of the candidate resource corresponding to the candidate resource set, the remote device also includes: receiving first indication information sent by the relay device, where the first indication information is used to indicate location information of the candidate resource set.

[0030] In one possible design, the location information of the candidate resource set includes the location information of the initial resource and the period of the candidate resource.

[0031] In one possible design, the remote device receives first indication information sent by the relay device, including:

[0032] The remote device receives the first indication information sent by the relay device through a physical bypass broadcast channel PSBCH; or, the remote device receives the first indication information sent by the relay device through a discovery message; or,

[0033] The remote device receives the first indication information sent by the relay device through a radio resource control RRC message.

[0034] In one possible design, the remote device receives second control information on a second resource, including: the remote device descrambling the second control information using identification information of the remote device.

[0035] In one possible design, the second control information also includes second indication information;

[0036] The method further includes: the remote device determining, based on the second indication information, that the second control information is control information for scheduling transmission resources of the relay device; or, the second control information is control information for scheduling transmission resources of the remote device.

[0037] In a third aspect, the present application provides a device communication device, which is deployed in a relay device and includes: a processing module for determining a first resource from a candidate resource set, the first resource being used to transmit first control information; a sending module for sending the first control information on the first resource, the first control information being used to indicate information of a remote device scheduled by the relay device and location information of a second resource; the sending module is also used to send second control information of the remote device scheduled by the relay device on the second resource based on the location information of the second resource.

[0038] In one possible design, the processing module is further configured to obtain configuration information of a resource pool, where the resource pool includes a candidate resource set.

[0039] In one possible design, the processing module is specifically used to receive configuration information of the resource pool sent by the base station.

[0040] In one possible design, the candidate resource set is any of the following:

[0041] One or more resources corresponding to the position of at least one RB in the middle of the resource pool;

[0042] One or more resources corresponding to a frequency resource position where the synchronization signal is located and a first preset time distance away from the synchronization signal;

[0043] One or more resources corresponding to a position that appears at a preset period with a second preset time distance offset from direct frame No. 0 or system frame No. 0.

[0044] In one possible design, the sending module is further used to send first indication information to the remote device, where the first indication information is used to indicate location information of the candidate resource set.

[0045] In one possible design, the location information of the candidate resource set includes the location information of the initial resource and the period of the candidate resource.

[0046] In one possible design, the sending module is specifically used to send the first indication information to the remote device through the physical bypass broadcast channel PSBCH; or, to send the first indication information to the remote device through a discovery message; or, to send the first indication message to the remote device through a radio resource control RRC message.

[0047] In one possible design, the processing module is further configured to determine a candidate resource set from a preconfigured resource pool.

[0048] In one possible design, the processing module is further configured to scramble the second control information using identification information of the remote device.

[0049] In one possible design, the second control information also includes second indication information, and the second indication information is used to indicate that the second control information is control information for scheduling transmission resources of a relay device; or, the second control information is control information for scheduling transmission resources of a remote device.

[0050] In one possible design, information of the remote device scheduled by the relay device and location information of the second resource are carried in bypass control information SCI corresponding to the first control information;

[0051] Alternatively, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in the MAC CE of the data corresponding to the first control information;

[0052] Alternatively, the information of the remote device scheduled by the relay device is carried in the bypass control information SCI corresponding to the first control information, and the location information of the second resource is carried in the MAC CE of the data corresponding to the first control information.

[0053] In a possible design, the demodulation reference signal DMRS, preamble sequence or cyclic redundancy check CRC used by the bypass control information SCI corresponding to the first control information and the second control information are different.

[0054] In a fourth aspect, the present application provides a device communication device, which is deployed on a remote device and includes: a receiving module for receiving first control information on a first resource, the first control information being used to indicate information of a remote device scheduled by a relay device; a processing module for determining a second resource based on the information of the remote device scheduled by the relay device; and a receiving module for receiving second control information on a second resource.

[0055] In one possible design, the first control information is further used to indicate location information of the second resource;

[0056] The processing module is specifically configured to determine the second resource according to the location information of the second resource.

[0057] In one possible design, the processing module is specifically used to determine the second resource according to a preset rule if the information of the remote device scheduled by the relay device includes an identifier of the remote device.

[0058] In one possible design, the processing module is specifically used to determine the second resource based on pre-configured location information of the second resource.

[0059] In one possible design, the receiving module is further used to receive location information of a pre-configured second resource sent by the relay device.

[0060] In one possible design, the receiving module is specifically used to detect the first control information in the candidate resource corresponding to the candidate resource set, and the candidate resource set includes the first resource.

[0061] In one possible design, the receiving module is further used to receive first indication information sent by the relay device, where the indication information is used to indicate location information of the candidate resource set.

[0062] In one possible design, the location information of the candidate resource set includes the location information of the initial resource and the period of the candidate resource.

[0063] In one possible design, the receiving module is specifically used to receive the first indication information sent by the relay device through the physical bypass broadcast channel PSBCH; or, to receive the first indication information sent by the relay device through a discovery message; or, to receive the first indication information sent by the relay device through a radio resource control RRC message.

[0064] In one possible design, the processing module is further used to descramble the second control information using identification information of the remote device.

[0065] In one possible design, the second control information also includes second indication information;

[0066] The processing module is further configured to determine, based on the second indication information, that the second control information is control information for scheduling transmission resources of the relay device; or, that the second control information is control information for scheduling transmission resources of the remote device.

[0067] In a fifth aspect, the present application provides a device communication device, which is deployed in a relay device and includes: a processor for determining a first resource from a candidate resource set, the first resource being used to transmit first control information; a transmitter for sending first control information on the first resource, the first control information being used to indicate information of a remote device scheduled by the relay device and location information of a second resource; the transmitter is also used to send second control information of the remote device scheduled by the relay device on the second resource based on the location information of the second resource.

[0068] In a possible design, the processor is further configured to obtain configuration information of a resource pool, where the resource pool includes a candidate resource set.

[0069] In one possible design, the processor is specifically used to receive configuration information of the resource pool sent by the base station.

[0070] In one possible design, the candidate resource set is any of the following:

[0071] One or more resources corresponding to the position of at least one RB in the middle of the resource pool;

[0072] One or more resources corresponding to a frequency resource position where the synchronization signal is located and a first preset time distance away from the synchronization signal;

[0073] One or more resources corresponding to a position that appears at a preset period with a second preset time distance offset from direct frame No. 0 or system frame No. 0.

[0074] In one possible design, the transmitter is further used to send first indication information to the remote device, where the first indication information is used to indicate location information of the candidate resource set.

[0075] In one possible design, the location information of the candidate resource set includes the location information of the initial resource and the period of the candidate resource.

[0076] In one possible design, the transmitter is specifically used to send the first indication information to the remote device through the physical bypass broadcast channel PSBCH; or, to send the first indication information to the remote device through a discovery message; or, to send the first indication message to the remote device through a radio resource control RRC message.

[0077] In one possible design, the processor is further configured to determine a candidate resource set from a preconfigured resource pool.

[0078] In one possible design, the processor is further configured to scramble the second control information using identification information of the remote device.

[0079] In one possible design, the second control information also includes second indication information, and the second indication information is used to indicate that the second control information is control information for scheduling transmission resources of a relay device; or, the second control information is control information for scheduling transmission resources of a remote device.

[0080] In one possible design, information of the remote device scheduled by the relay device and location information of the second resource are carried in bypass control information SCI corresponding to the first control information;

[0081] Alternatively, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in the MAC CE of the data corresponding to the first control information;

[0082] Alternatively, the information of the remote device scheduled by the relay device is carried in the bypass control information SCI corresponding to the first control information, and the location information of the second resource is carried in the MAC CE of the data corresponding to the first control information.

[0083] In a possible design, the demodulation reference signal DMRS, preamble sequence or cyclic redundancy check CRC used by the bypass control information SCI corresponding to the first control information and the second control information are different.

[0084] In a sixth aspect, the present application provides a device communication device, which is deployed on a remote device and includes: a receiver for receiving first control information on a first resource, the first control information being used to indicate information of a remote device scheduled by a relay device; a processor for determining a second resource based on the information of the remote device scheduled by the relay device; and the receiver is also used to receive second control information on the second resource.

[0085] In one possible design, the first control information is further used to indicate location information of the second resource;

[0086] The processor is specifically configured to determine the second resource according to the location information of the second resource.

[0087] In one possible design, the processor is specifically configured to determine the second resource according to a preset rule if the information of the remote device scheduled by the relay device includes an identifier of the remote device.

[0088] In one possible design, the processor is specifically used to determine the second resource based on pre-configured location information of the second resource.

[0089] In one possible design, the receiver is further configured to receive location information of a pre-configured second resource sent by the relay device.

[0090] In one possible design, the receiver is specifically used to detect the first control information in the candidate resource corresponding to the candidate resource set, and the candidate resource set includes the first resource.

[0091] In one possible design, the receiver is further used to receive first indication information sent by the relay device, where the indication information is used to indicate location information of the candidate resource set.

[0092] In one possible design, the location information of the candidate resource set includes the location information of the initial resource and the period of the candidate resource.

[0093] In one possible design, the receiver is specifically used to receive the first indication information sent by the relay device through the physical bypass broadcast channel PSBCH; or, to receive the first indication information sent by the relay device through a discovery message; or, to receive the first indication information sent by the relay device through a radio resource control RRC message.

[0094] In one possible design, the processor is further configured to descramble the second control information using identification information of the remote device.

[0095] In one possible design, the second control information also includes second indication information;

[0096] The processor is further configured to determine, based on the second indication information, that the second control information is control information for scheduling transmission resources of the relay device; or, that the second control information is control information for scheduling transmission resources of the remote device.

[0097] The seventh aspect of the present application provides a computer-readable medium, which includes computer-executable instructions, and the computer-executable instructions are used to enable a relay device to execute the method provided in the first aspect of the present application.

[0098] In an eighth aspect, the present application provides a computer-readable medium, wherein the computer-readable medium includes computer-executable instructions, and the computer-executable instructions are used to enable a remote device to execute the method provided in the second aspect of the present application.

[0099] The ninth aspect of the present application provides a system on a chip, which can be applied to a relay device. The system on a chip includes: at least one communication interface, at least one processor, and at least one memory. The communication interface, memory, and processor are interconnected through a bus. The processor calls the instructions stored in the memory to execute the operation of the relay device in the method provided in the first aspect of the present application.

[0100] The tenth aspect of the present application provides a system on a chip, which can be applied to a remote device. The system on a chip includes: at least one communication interface, at least one processor, and at least one memory. The communication interface, memory, and processor are interconnected through a bus. The processor calls the instructions stored in the memory to execute the operation of the remote device in the method provided in the second aspect of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0101] Figure 1 This is a schematic diagram of the application scenario of this application;

[0102] Figure 2 This is a flow chart of the first embodiment of the device communication method of the present application;

[0103] Figure 3 This is a schematic diagram of the positional relationship between the first control information and the second control information of this application;

[0104] Figure 4 A schematic diagram of a format of the first control information of this application;

[0105] Figure 5 This is a schematic diagram of another format of the first control information of this application;

[0106] Figure 6Schematic diagram of the relay device of this application scheduling the remote device through the first control information and the second control information

[0107] Figure 7 This is a flow chart of Embodiment 2 of the device communication method of this application;

[0108] Figure 8 This is a flowchart of Embodiment 3 of the device communication method of this application;

[0109] Figure 9 This is a flowchart of Embodiment 4 of the device communication method of this application;

[0110] Figure 10 A schematic diagram of the structure of a device communication device provided in this application;

[0111] Figure 11 A schematic diagram of the structure of another device communication device provided in this application;

[0112] Figure 12 A schematic structural diagram of another device communication apparatus provided in this application;

[0113] Figure 13 This is a structural diagram of another device communication device provided in this application. DETAILED DESCRIPTION

[0114] Figure 1 This is a schematic diagram of the application scenario of this application, such as Figure 1As shown, the application scenarios of the present application include: base stations, relay devices, and remote devices. The relay devices relay data and control information between the base stations and remote devices. The base stations can be evolved NodeBs (eNBs), access points (APs), or relay stations in Long Term Evolution (LTE) systems, or base stations (such as gNBs or transmission points (TRPs)) in fifth-generation mobile communication (5G) systems. Both the relay devices and the remote devices can be user equipment (UE). A UE can be a terminal device, mobile station, terminal, or mobile terminal, and can communicate with one or more network devices via a radio access network (RAN). A UE can be a mobile phone (or "cellular" phone) or a computer with a mobile terminal. For example, a UE can also be a portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted mobile device. A UE can also be an IoT device, such as a watch terminal, wearable device, logistics tracking device, or satellite TV. In different scenarios, the relay device and the remote device may be different. For example, in the Internet of Vehicles scenario, the relay device can be a roadside unit (RSU), and the remote device can be an on-board unit (OBU), a vehicle UE (V-UE), or a pedestrian handheld terminal (P-UE). In the Internet of Things scenario, the relay device can be a mobile phone, a watch with communication capabilities, an Internet of Things device (IoT device), or a computer with a mobile terminal, and the remote device can be a wearable device (such as a smart bracelet or smart watch), an IoT device, etc. Figure 1 The IoT scenario is used as an example, and this application does not impose any restrictions on this.

[0115] The relay device of the present application schedules the remote device through two-level control information, wherein the first control information (i.e., the first-level control information) is used to indicate which remote devices are scheduled. The remote device determines whether it is scheduled by the relay device based on the first control information. If it is scheduled by the relay device, it obtains its corresponding second control information (i.e., the second-level control information) at the specified location. The second control information carries the scheduling information of the remote device, so that the remote device obtains its scheduling information. The remote device can determine the specified location through the location information of the second control information corresponding to the scheduled remote device carried in the first control information; the remote device can also determine whether it is scheduled by the relay device based on the first control information. If it is scheduled by the relay device, the specified location is determined according to the preset rules. Since the location information of the second control information corresponding to the remote device can be determined by the first control information, the blind detection range of the remote device is narrowed and the power consumption of the remote device is reduced.

[0116] Concepts that may be involved in the following embodiments of this application:

[0117] Resource block (RB) refers to the bandwidth corresponding to M subcarriers on the frequency resource, for example, M = 12;

[0118] Physical Resource Block (PRB): refers to a time-frequency resource consisting of K RBs on the frequency resource and L time slots on the time resource, for example, K = 1, L = 1;

[0119] Physical Resource Block Pair (PRB Pair): refers to a resource consisting of two PRBs in the same RB position, i.e., a time-frequency resource consisting of K RBs in frequency resources and 2L time slots in time resources, for example, K = 1, L = 1;

[0120] The smallest unit of time-frequency resources is called a resource element (RE), which refers to the resources of Q subcarriers in frequency and P physical symbols in time (such as orthogonal frequency division multiplexing (OFDM) symbols or single carrier-frequency division multiplexing (SC-FDM) symbols), for example, Q = 1, P = 1; time-frequency resources are composed of one or more REs.

[0121] In this application, unless otherwise specified, resources refer to time-frequency resources. In current standards, one SCI (also known as SA) occupies one PRB pair. Sidelink data scheduling is based on subframes (two slots) in time, and the number of RBs in frequency is indicated by the SCI.

[0122] The definitions of the aforementioned concepts are based on the LTE protocol. New communication system technologies or various evolving system technologies, such as 5G, may use different concepts or parameter values; for example, M may not be 12, and SCI may not occupy a single PRB pair. This application uses the concepts described in LTE for ease of understanding, but is not limited to this description.

[0123] The technical aspects of the present application are described below with reference to several specific embodiments. These specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0124] Figure 2 This is a flow chart of the first embodiment of the device communication method of this application, as shown in FIG. Figure 2 As shown:

[0125] S201: The relay device determines a first resource from a candidate resource set.

[0126] The candidate resource set refers to a collection of resources in the resource pool that can be used to transmit the first control information. The candidate resource set is part of the resources in the resource pool. The resources in the resource pool are used for communication between the relay device and the remote device. The resource pool contains the candidate resource set.

[0127] The first resource refers to a resource used to transmit the first control information, and may be any resource in the candidate resource set.

[0128] The candidate resource set can be determined according to the following preset rules:

[0129] For example, one or more resources corresponding to the position of at least one RB in the middle of the resource pool are determined to form a candidate resource set.

[0130] Alternatively, one or more resources corresponding to the frequency resource position of the synchronization signal and the position a first preset time distance away from the synchronization signal are determined to form a candidate resource set, and the synchronization signal is a synchronization signal sent by the relay device to the remote device.

[0131] Alternatively, one or more resources corresponding to positions offset by a second preset time distance and appearing at a preset period from Direct Frame Number (DFN) #0 or System Frame Number (SFN) #0 are determined to form a candidate resource set. DFN is also called a D2D frame number.

[0132] Optionally, before S201, the following steps may also be included:

[0133] S200: The relay device obtains configuration information of the resource pool.

[0134] Optionally, the relay device may obtain the resource pool in the following ways, but is not limited to:

[0135] In one possible implementation, a base station or network-side device sends resource pool configuration information to a relay device, and the relay device obtains information such as the resource pool time, frequency, location, and / or resource pool size based on the resource pool configuration information. Specifically, the base station may send the resource pool configuration information to the relay device via control information transmitted over a cellular link.

[0136] Another possible implementation is that the relay device obtains the configuration information of the resource pool in a pre-configured manner; for example, as specified by the protocol, or obtained through the network-side device based on pre-configuration permitted by wireless management agencies in different regions.

[0137] S202: The relay device sends first control information via a first resource.

[0138] The relay device may determine the remote device to be scheduled by the relay device based on the service and resource conditions.

[0139] The first control information is used to indicate information of the remote device scheduled by the relay device (which may also be information indicating whether the remote device is scheduled by the relay device) and location information of the second resource corresponding to the scheduled remote device.

[0140] Assume that the relay device schedules three remote devices, then it indicates in the first control information that the three remote devices are scheduled, and the three remote devices are remote device 1, remote device 2 and remote device 4 respectively; the first resource for transmitting the first control information, and the second resource for transmitting the second control information of remote device 1, the second resource for transmitting the second control information of remote device 2, and the second resource for transmitting the second control information of remote device 2 are as follows: Figure 3 As shown, the first control information may be sent periodically.

[0141] In a possible implementation, the information of the remote device scheduled by the relay device and the location information of the second resource corresponding to the scheduled remote device can be carried in the bypass control information SCI corresponding to the first control information. In the SCI, two fields are defined for each remote device scheduled by the relay device, such as Figure 4 As shown, a field is used to indicate the information of the remote device scheduled by the relay device. For example, the information of the remote device can be the local ID (Local ID) or temporary ID of the remote device. N bits are used to identify a remote device, and up to 2 remote devices can be identified. N remote device. Figure 4 The remote device ID is indicated by 3 bits, namely C7, C6 and C5, which can be used to identify the information of 8 remote devices. Another field is used to indicate the location information of the second resource. Figure 4 Taking 5 bits as an example, they are C4, C3, C2, C1 and C0.

[0142] In another possible implementation, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in a Media Access Control Control Element (MAC CE) of the data corresponding to the first control information.

[0143] This method is similar to Figure 4 The method shown is similar, except that Figure 4 In the SCI, two domains are defined for each remote device scheduled by the relay device, while in this method, two domains are defined for each remote device scheduled by the relay device in the MAC CE of the data corresponding to the first control information. The definition of the two domains is the same as Figure 4 Similar, no further description is given here.

[0144] In another possible implementation, the information of the remote device scheduled by the relay device is carried in the bypass control information SCI corresponding to the first control information, and the location information of the second resource is carried in the MAC CE of the data corresponding to the first control information. Figure 5 As shown, the SCI corresponding to the first control information indicates that the information of the remote device scheduled by the relay device can be indicated by a bitmap (also called a bitmap), and each remote device associated with the relay device corresponds to a bit in the bitmap. Figure 5In the relay, an 8-bit bitmap is used to indicate whether the remote device associated with the relay device is scheduled. The corresponding bit value is set to indicate whether the remote device is scheduled. For example, if 1 indicates scheduled, 0 indicates not scheduled. If a remote device is scheduled, the value of the bit corresponding to the remote device is set to 1. If 0 indicates scheduled, 1 indicates not scheduled. If a remote device is scheduled, the value of the bit corresponding to the remote device is set to 0. Figure 5 In the example, assuming that the bit value is 1, it indicates that they are scheduled. Then, remote devices 1, 2, and 4 are scheduled, and the remaining remote devices are not scheduled. The MAC CE of the data corresponding to the first control information carries the location information of the second resource, such as Figure 5 The remote device first detects the SCI corresponding to the first control device to determine whether it is scheduled. If it is scheduled, it detects the MAC CE of the data corresponding to the first control information to obtain the location information of the second resource. Figure 5 In the illustrated manner, only the scheduled remote device needs to demodulate the MAC CE of the data corresponding to the first control information.

[0145] Figure 6 This is a schematic diagram of a relay device in the present application scheduling a remote device through first control information and second control information. (a) in the figure illustrates the transmission of the first control information in the SCI; (b) in the figure illustrates the transmission of the first control information on the MAC CE of the SCI and data. Here, only the case of frequency division multiplexing of the PSCCH and PSSCH resource pools is illustrated by way of example. The method of the present application is also applicable to the case of time division multiplexing of the PSCCH and PSSCH resource pools.

[0146] S203: The relay device sends, at the second resource according to the determined location information of the second resource, the second control information of the remote device scheduled by the relay device.

[0147] The second control information includes scheduling information.

[0148] Optionally, before sending the second control information of the scheduled remote device, the relay device may also scramble the corresponding second control information of the scheduled remote device using the relevant information of the scheduled remote device. For example, the relevant information may be identification information, such as a global ID, or a cell radio network temporary identifier (Cell Radio Network Temporary Identifier, C-RNTI), layer 2 ID, etc.; for example, if remote device 1 is scheduled by the relay device, the second control information of remote device 1 is scrambled using the identification information of remote device 1, such as the global ID, so that remote device 1 can correctly descramble the second control information, while other remote devices cannot correctly descramble the second control information of remote device 1.

[0149] Optionally, the second control information may further include second indication information, the second indication information being used to indicate that the second control information is control information for scheduling transmission resources of a relay device; or, the second control information is control information for scheduling transmission resources of a remote device. That is, the second indication information is used to indicate whether the second control information is bypass uplink (Sidelink UL) control information or bypass downlink (Sidelink DL) control information. The second indication information may be represented by one bit, for example: 0 indicates bypass downlink control information, and 1 indicates bypass uplink control information. A bypass downlink refers to a link from a relay device to a remote device; a bypass uplink refers to a link from a remote device to a relay device.

[0150] Accordingly, the remote device receives the first control information at the first resource, determines the second resource based on the location information of the second resource, and receives the second control information at the second resource.

[0151] For a detailed description of the first resource, the first control information, the second resource, and the second control information, please refer to the detailed description of the relevant parts in S200-S203, which will not be repeated here.

[0152] In this embodiment, a relay device determines a first resource from a candidate resource set, sends a first control information on the first resource, and sends a second control information on the second resource. Since the relay device indicates the remote device scheduled by the relay device and the location information of the second resource in the first control information, the remote device can determine whether it is scheduled through the first control information received on the first resource, and if it is scheduled, the location information of its corresponding second resource, and receive its corresponding second control information on its corresponding second resource to obtain its scheduling information, which is equivalent to the remote device blindly detecting the first control information. After detecting the first control information, the remote device can directly determine the location information of the second resource used to transmit the second control information, that is, there is no need to blindly detect the resources between the first resource and the second resource, thereby narrowing the blind detection range of the remote device and reducing the power consumption of the remote device.

[0153] exist Figure 2 On the basis of the illustrated embodiment, further, the remote device can be enabled to know in advance the location information of the candidate resource set that the relay device can use to transmit the first control information; so that the remote device can detect the first control information in the resources of the candidate resource set based on the location information of the candidate resource set, further narrowing the blind detection range of the remote device and further reducing the power consumption of the remote device.

[0154] The manner in which the remote device obtains in advance the location information of the candidate resource set that the relay device can use to transmit the first control information includes but is not limited to the following two:

[0155] Among them, one possible implementation manner is: enabling the remote device to obtain the location information of the candidate resource set through preconfiguration.

[0156] Another possible implementation method is to send a first indication message to the remote device through a relay device so that the remote device can know the candidate resource set, wherein the first indication information is used to indicate the location information of the candidate resource set, and the location information of the candidate resource set may include the location information of the initial resource and the period of the candidate resource.

[0157] Among them, the manner in which the relay device sends the first indication information to the remote device includes but is not limited to the following: One possible implementation manner: the relay device sends the first indication information to the remote device via a broadcast message; for example: the relay device sends the first indication information to the remote device via a physical sidelink broadcast channel (PSBCH). Alternatively, the relay device sends the first indication information to the remote device via a discovery message. Another possible implementation manner: the relay device sends the first indication message to the remote device via a radio resource control (RRC) message.

[0158] In the above embodiments, if the first control information and the second control information can share resources, the first control information and the second control information can be distinguished by using different SCIs (Demodulation Reference Signal, DMRS), preamble sequences or cyclic redundancy checks (CRC) corresponding to the first control information and the second control information.

[0159] Figure 7 This is a flow chart of the second embodiment of the device communication method of this application. Figure 7 and Figure 2 The difference of the embodiment shown is that Figure 2 In the embodiment shown, the location information of the second resource is directly carried in the first control information, and Figure 7 In the embodiment shown, the location information of the second resource is indicated in an implicit manner, such as Figure 7 As shown:

[0160] S701: The relay device sends first control information via a first resource.

[0161] The first control information is used to indicate information of the remote device scheduled by the relay device.

[0162] S702: The remote device determines whether the information of the remote device scheduled by the relay device indicated in the first control information includes its information, and if so, determines a second resource according to a preset rule.

[0163] Among them, the preset rules can be pre-configured; the relay device can send the preset rules to the remote device when associated with the remote device, or the relay device can send the preset rules to the remote device through broadcast information, or the preset rules can also be specified by the standard, etc., and this application does not impose any restrictions on this.

[0164] S703: The relay device sends second control information of the scheduled remote device via a second resource.

[0165] Accordingly, the remote device receives its second control information at the second resource.

[0166] In this embodiment, the relay device sends the first control information on the first resource, and the remote device determines whether the information of the remote device scheduled by the relay device indicated in the first control information includes its information. If it includes the information, the second resource is determined according to a preset rule, and the relay device sends the second control information of the scheduled remote device on the second resource. The remote device receives its second control information on the second resource. Since the second resource is pre-configured, the remote device receives its second control information on the second resource after determining that it is scheduled, which narrows the blind detection range of the remote device and reduces the power consumption of the remote device.

[0167] Figure 8 This is a flow chart of Embodiment 3 of the device communication method of this application. The method of this embodiment is performed by a relay device. The method of this embodiment is as follows:

[0168] S801: Obtain configuration information of the resource pool.

[0169] S802: Configure control information and resources.

[0170] S803: Send public control information.

[0171] The public control information carries information about a specific remote device and location information of the control information of the specific remote device. The specific remote device refers to a remote device scheduled by the relay device.

[0172] S804: Send control information of a specific remote device.

[0173] The detailed description of each step in this embodiment can be found in the above Figure 2 or Figure 7 The detailed description of the corresponding steps in this embodiment will not be repeated in this embodiment. The implementation principle and technical effects of this embodiment are similar and will not be repeated here.

[0174] Figure 9 This is a flowchart of Embodiment 4 of the device communication method of this application. The method of this embodiment is executed by a remote device. The method of this embodiment is as follows:

[0175] S901: Detect public control information.

[0176] S902: Determine whether it is scheduled by the relay device. If so, execute S903; if not, end.

[0177] S903: Detect control information of a specific remote device.

[0178] The detailed description of each step in this embodiment can be found in the above Figure 2 or Figure 7 The detailed description of the corresponding steps in this embodiment will not be repeated in this embodiment. The implementation principle and technical effects of this embodiment are similar and will not be repeated here.

[0179] Figure 10 This is a structural diagram of a device communication device provided in the present application, which is deployed in a relay device, and the device includes: a processing module 1001 and a sending module 1002; wherein, the processing module 1001 is used to determine a first resource from a candidate resource set, and the first resource is used to transmit first control information; the sending module 1002 is used to send the first control information on the first resource, and the first control information is used to indicate information of a remote device scheduled by the relay device and location information of a second resource; the sending module 1002 is also used to send second control information of the remote device scheduled by the relay device on the second resource according to the location information of the second resource.

[0180] Optionally, the processing module 1001 is further configured to obtain configuration information of a resource pool, where the resource pool includes a candidate resource set.

[0181] Optionally, the processing module 1001 is specifically configured to receive configuration information of a resource pool sent by a base station.

[0182] Optionally, the candidate resource set is any of the following:

[0183] One or more resources corresponding to the position of at least one RB in the middle of the resource pool;

[0184] One or more resources corresponding to a frequency resource position where the synchronization signal is located and a first preset time distance away from the synchronization signal;

[0185] One or more resources corresponding to a position that appears at a preset period with a second preset time distance offset from direct frame No. 0 or system frame No. 0.

[0186] Optionally, the sending module 1002 is further configured to send first indication information to the remote device, where the first indication information is used to indicate location information of the candidate resource set.

[0187] Optionally, the location information of the candidate resource set includes location information of the initial resource and a period of the candidate resource.

[0188] Optionally, the sending module 1002 is specifically used to send the first indication information to the remote device through the physical bypass broadcast channel PSBCH; or, send the first indication information to the remote device through a discovery message; or, send the first indication message to the remote device through a radio resource control RRC message.

[0189] Optionally, the processing module 1002 is further configured to determine a candidate resource set from a preconfigured resource pool.

[0190] Optionally, the processing module 1002 is further configured to scramble the second control information using identification information of the remote device.

[0191] Optionally, the second control information further includes second indication information, and the second indication information is used to indicate that the second control information is control information for scheduling transmission resources of a relay device; or, the second control information is control information for scheduling transmission resources of a remote device.

[0192] Optionally, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in the bypass control information SCI corresponding to the first control information;

[0193] Alternatively, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in the MAC CE of the data corresponding to the first control information;

[0194] Alternatively, the information of the remote device scheduled by the relay device is carried in the bypass control information SCI corresponding to the first control information, and the location information of the second resource is carried in the MAC CE of the data corresponding to the first control information.

[0195] Optionally, the demodulation reference signal DMRS, preamble sequence or cyclic redundancy check CRC used by the bypass control information SCI corresponding to the first control information and the second control information are different.

[0196] Figure 10 The device of the embodiment shown can be used to perform Figure 2 The steps corresponding to the relay device in the method embodiment shown have similar implementation principles and technical effects and will not be repeated here.

[0197] Figure 11 This is a structural diagram of another device communication device provided by this application, which is deployed on a remote device, such as Figure 11As shown, the device includes: a receiving module 1101 and a processing module 1102; wherein the receiving module 1101 is used to receive first control information in a first resource, and the first control information is used to indicate information of a remote device scheduled by the relay device; the processing module 1102 is used to determine a second resource based on the information of the remote device scheduled by the relay device; the receiving module 1101 is also used to receive second control information in the second resource.

[0198] Optionally, the first control information is further used to indicate location information of the second resource;

[0199] The processing module 1102 is specifically configured to determine the second resource according to the location information of the second resource.

[0200] Optionally, the processing module 1102 is specifically configured to determine the second resource according to a preset rule if the information of the remote device scheduled by the relay device includes an identifier of the remote device.

[0201] Optionally, the processing module 1102 is specifically configured to determine the second resource according to pre-configured location information of the second resource.

[0202] Optionally, the receiving module 1101 is further configured to receive location information of a pre-configured second resource sent by a relay device.

[0203] Optionally, the receiving module 1101 is specifically configured to detect the first control information in a candidate resource corresponding to a candidate resource set, where the candidate resource set includes the first resource.

[0204] Optionally, the receiving module 1101 is further configured to receive first indication information sent by a relay device, where the indication information is used to indicate location information of the candidate resource set.

[0205] Optionally, the location information of the candidate resource set includes location information of the initial resource and a period of the candidate resource.

[0206] Optionally, the receiving module 1101 is specifically used to receive the first indication information sent by the relay device through the physical bypass broadcast channel PSBCH; or, to receive the first indication information sent by the relay device through a discovery message; or, to receive the first indication information sent by the relay device through a radio resource control RRC message.

[0207] Optionally, the processing module 1102 is further configured to descramble the second control information using identification information of the remote device.

[0208] Optionally, the second control information also includes second indication information;

[0209] The processing module 1102 is further configured to determine, based on the second indication information, that the second control information is control information for scheduling transmission resources of the relay device; or, that the second control information is control information for scheduling transmission resources of the remote device.

[0210] Figure 11 The device of the embodiment shown can be used to perform Figure 2 or Figure 7 The steps corresponding to the remote device in the method embodiment shown have similar implementation principles and technical effects and will not be repeated here.

[0211] Figure 12 This is a structural diagram of another device communication device provided in the present application, which is deployed in a relay device, and the device includes: a processor 1201 and a transmitter 1202; wherein, the processor 1201 is used to determine a first resource from a candidate resource set, and the first resource is used to transmit first control information; the transmitter 1202 is used to send the first control information on the first resource, and the first control information is used to indicate information of a remote device scheduled by the relay device and location information of a second resource; the transmitter 1202 is also used to send second control information of the remote device scheduled by the relay device on the second resource according to the location information of the second resource.

[0212] Optionally, the processor 1201 is further configured to obtain configuration information of a resource pool, where the resource pool includes a candidate resource set.

[0213] Optionally, the processor 1201 is specifically configured to receive configuration information of a resource pool sent by a base station.

[0214] Optionally, the candidate resource set is any of the following:

[0215] One or more resources corresponding to the position of at least one RB in the middle of the resource pool;

[0216] One or more resources corresponding to a frequency resource position where the synchronization signal is located and a first preset time distance away from the synchronization signal;

[0217] One or more resources corresponding to a position that appears at a preset period with a second preset time distance offset from direct frame No. 0 or system frame No. 0.

[0218] Optionally, the transmitter 1202 is further configured to send first indication information to the remote device, where the first indication information is used to indicate location information of the candidate resource set.

[0219] Optionally, the location information of the candidate resource set includes location information of the initial resource and a period of the candidate resource.

[0220] Optionally, the transmitter 1202 is specifically used to send the first indication information to the remote device via the physical bypass broadcast channel PSBCH; or, send the first indication information to the remote device via a discovery message; or, send the first indication message to the remote device via a radio resource control RRC message.

[0221] Optionally, the processor 1201 is further configured to determine a candidate resource set from a preconfigured resource pool.

[0222] Optionally, the processor 1201 is further configured to scramble the second control information using identification information of the remote device.

[0223] Optionally, the second control information further includes second indication information, and the second indication information is used to indicate that the second control information is control information for scheduling transmission resources of a relay device; or, the second control information is control information for scheduling transmission resources of a remote device.

[0224] Optionally, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in the bypass control information SCI corresponding to the first control information;

[0225] Alternatively, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in the MAC CE of the data corresponding to the first control information;

[0226] Alternatively, the information of the remote device scheduled by the relay device is carried in the bypass control information SCI corresponding to the first control information, and the location information of the second resource is carried in the MAC CE of the data corresponding to the first control information.

[0227] Optionally, the demodulation reference signal DMRS, preamble sequence or cyclic redundancy check CRC used by the bypass control information SCI corresponding to the first control information and the second control information are different.

[0228] Figure 12 The device of the embodiment shown can be used to perform Figure 2 The steps corresponding to the relay device in the method embodiment shown have similar implementation principles and technical effects and will not be repeated here.

[0229] Figure 13 This is a structural diagram of another device communication device provided by this application, which is deployed on a remote device, such as Figure 13As shown, the device includes: a receiver 1301 and a processor 1302; wherein, the receiver 1301 is used to receive first control information on a first resource, and the first control information is used to indicate information of a remote device scheduled by a relay device; the processor 1302 is used to determine a second resource based on the information of the remote device scheduled by the relay device; the receiver 1301 is also used to receive second control information on the second resource.

[0230] Optionally, the first control information is further used to indicate location information of the second resource;

[0231] The processor 1302 is specifically configured to determine the second resource according to the location information of the second resource.

[0232] Optionally, the processor 1302 is specifically configured to determine the second resource according to a preset rule if the information of the remote device scheduled by the relay device includes an identifier of the remote device.

[0233] Optionally, the processor 1302 is specifically configured to determine the second resource according to pre-configured location information of the second resource.

[0234] Optionally, the receiver 1301 is further configured to receive location information of a pre-configured second resource sent by the relay device.

[0235] Optionally, the receiver 1301 is specifically configured to detect the first control information in a candidate resource corresponding to a candidate resource set, where the candidate resource set includes the first resource.

[0236] Optionally, the receiver 1301 is further used to receive first indication information sent by the relay device, where the indication information is used to indicate location information of the candidate resource set.

[0237] Optionally, the location information of the candidate resource set includes location information of the initial resource and a period of the candidate resource.

[0238] Optionally, the receiver 1301 is specifically used to receive the first indication information sent by the relay device through the physical bypass broadcast channel PSBCH; or, to receive the first indication information sent by the relay device through a discovery message; or, to receive the first indication information sent by the relay device through a radio resource control RRC message.

[0239] Optionally, the processor 1302 is further configured to descramble the second control information using identification information of the remote device.

[0240] Optionally, the second control information also includes second indication information;

[0241] The processor 1302 is further configured to determine, according to the second indication information, that the second control information is control information for scheduling transmission resources of the relay device; or, that the second control information is control information for scheduling transmission resources of the remote device.

[0242] Figure 13 The device of the embodiment shown can be used to perform Figure 2 or Figure 7 The steps corresponding to the remote device in the method embodiment shown have similar implementation principles and technical effects and will not be repeated here.

[0243] It is understood that the processor in this application can be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0244] The bus in this application may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. Buses can be divided into address buses, data buses, control buses, etc. For ease of illustration, the buses in the drawings of this application are not limited to just one bus or just one type of bus.

[0245] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0246] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0247] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0248] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) or a processor (English: processor) to perform some steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (English: Read-Only Memory, abbreviated: ROM), a random access memory (English: Random Access Memory, abbreviated: RAM), a disk or an optical disk, and other media that can store program code.

Claims

1. A device communication method, characterized in that: include: The relay device determines a first resource from a candidate resource set, where the first resource is used to transmit first control information; The relay device sends the first control information on the first resource, where the first control information is public control information and is used to indicate information of a remote device scheduled by the relay device and location information of a second resource; The relay device sends second control information of the remote device scheduled by the relay device on the second resource.

2. The method according to claim 1, characterized in that Before the relay device determines the first resource from the candidate resource set, the relay device further includes: The relay device obtains configuration information of a resource pool, where the resource pool includes the candidate resource set.

3. The method according to claim 2, characterized in that The relay device obtains the configuration information of the resource pool including: The relay device receives configuration information of the resource pool sent by the base station.

4. The method according to claim 2 or 3, characterized in that The candidate resource set is any of the following: One or more resources corresponding to the position of at least one RB in the middle of the resource pool; One or more resources corresponding to a frequency resource position where the synchronization signal is located and a first preset time distance away from the synchronization signal; One or more resources corresponding to a position that appears at a preset period with a second preset time distance offset from direct frame No. 0 or system frame No.

0.

5. The method according to any one of claims 1 to 3, characterized in that Before the relay device determines the first resource from the candidate resource set, the relay device further includes: The relay device sends first indication information to the remote device, where the first indication information is used to indicate location information of the candidate resource set.

6. The method according to claim 5, characterized in that The relay device sending first indication information to the remote device includes: The relay device sends the first indication information to the remote device through a physical bypass broadcast channel PSBCH; or, The relay device sends the first indication information to the remote device through a discovery message; or, The relay device sends the first indication information to the remote device through a radio resource control RRC message.

7. The method according to any one of claims 1 to 3 and 6, characterized in that: The second control information also includes second indication information, where the second indication information is used to indicate that the second control information is control information for scheduling transmission resources of the relay device; or, the second control information is control information for scheduling transmission resources of the remote device.

8. The method according to any one of claims 1 to 3 and 6, characterized in that: The information of the remote device scheduled by the relay device and the location information of the second resource are carried in the bypass control information SCI corresponding to the first control information; Alternatively, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in a MAC CE of data corresponding to the first control information; Alternatively, the information of the remote device scheduled by the relay device is carried in the bypass control information SCI corresponding to the first control information, and the location information of the second resource is carried in the MACCE of the data corresponding to the first control information.

9. A device communication method, characterized in that: include: The remote device receives first control information at the first resource, where the first control information is public control information and is used to indicate information of the remote device scheduled by the relay device and location information of the second resource; The remote device determines the second resource based on the location information of the second resource; The remote device receives second control information on the second resource.

10. The method according to claim 9, characterized in that The method further comprises: If the information of the remote device scheduled by the relay device includes the identifier of the remote device, the remote device determines the second resource according to a preset rule.

11. The method according to claim 10, characterized in that The remote device determines the second resource according to a preset rule, including: The remote device determines the second resource according to pre-configured location information of the second resource.

12. The method according to claim 11, characterized in that Before the remote device determines the second resource according to the pre-configured location information of the second resource, the method further includes: The remote device receives the location information of the pre-configured second resource sent by the relay device.

13. The method according to any one of claims 9 to 12, characterized in that: The remote device receives first control information at a first resource, including: The remote device detects first control information in a candidate resource corresponding to a candidate resource set, where the candidate resource set includes the first resource.

14. The method according to claim 13, characterized in that Before the remote device detects the first control information on the candidate resource corresponding to the candidate resource set, the remote device further includes: The remote device receives first indication information sent by the relay device, where the first indication information is used to indicate location information of the candidate resource set.

15. The method according to claim 14, characterized in that The remote device receives the first indication information sent by the relay device, including: The remote device receives the first indication information sent by the relay device through a physical bypass broadcast channel PSBCH; or, The remote device receives the first indication information sent by the relay device through a discovery message; or, The remote device receives the first indication information sent by the relay device through a radio resource control RRC message.

16. The method according to any one of claims 9-12, 14-15, characterized in that: The second control information also includes second indication information; The method further comprises: The remote device determines, based on the second indication information, that the second control information is control information for scheduling transmission resources of the relay device; or, the second control information is control information for scheduling transmission resources of the remote device.

17. A device communication apparatus, wherein the device communication apparatus is deployed in a relay device, characterized in that: include: A processor, configured to determine a first resource from a candidate resource set, where the first resource is used to transmit first control information; a transmitter, configured to send the first control information on the first resource, where the first control information is public control information and is used to indicate information of a remote device scheduled by the relay device and location information of a second resource; The transmitter is further configured to transmit, via the second resource, second control information of the remote device scheduled by the relay device.

18. The device according to claim 17, characterized in that The processor is further configured to obtain configuration information of a resource pool, where the resource pool includes the candidate resource set.

19. The device according to claim 18, characterized in that The candidate resource set is any of the following: One or more resources corresponding to the position of at least one RB in the middle of the resource pool; One or more resources corresponding to a frequency resource position where the synchronization signal is located and a first preset time distance away from the synchronization signal; One or more resources corresponding to a position that appears at a preset period with a second preset time distance offset from direct frame No. 0 or system frame No.

0.

20. The device according to claim 17 or 18, characterized in that The transmitter is further configured to send first indication information to the remote device, where the first indication information is used to indicate location information of the candidate resource set.

21. The device according to claim 20, characterized in that The transmitter is specifically used to send the first indication information to the remote device via a physical bypass broadcast channel PSBCH; or, send the first indication information to the remote device via a discovery message; or, send the first indication information to the remote device via a radio resource control RRC message.

22. The device according to any one of claims 17 to 19 and 21, characterized in that: The second control information also includes second indication information, where the second indication information is used to indicate that the second control information is control information for scheduling transmission resources of the relay device; or, the second control information is control information for scheduling transmission resources of the remote device.

23. The device according to any one of claims 17 to 19 and 21, characterized in that: The information of the remote device scheduled by the relay device and the location information of the second resource are carried in the bypass control information SCI corresponding to the first control information; Alternatively, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in a MAC CE of data corresponding to the first control information; Alternatively, the information of the remote device scheduled by the relay device is carried in the bypass control information SCI corresponding to the first control information, and the location information of the second resource is carried in the MACCE of the data corresponding to the first control information.

24. A device communication apparatus, wherein the device communication apparatus is deployed on a remote device, characterized in that: include: A receiver, configured to receive first control information at a first resource, where the first control information is public control information and is used to indicate information of a remote device scheduled by the relay device and location information of a second resource; The processor is configured to determine the second resource based on the location information of the second resource; The receiver is further configured to receive second control information on the second resource.

25. The device according to claim 24, characterized in that The processor is specifically configured to determine the second resource according to a preset rule if the information of the remote device scheduled by the relay device includes an identifier of the remote device.

26. The device according to claim 25, characterized in that The processor is specifically configured to determine the second resource according to pre-configured location information of the second resource.

27. The device according to claim 26, characterized in that The receiver is further configured to receive the location information of the pre-configured second resource sent by the relay device.

28. The device according to any one of claims 24 to 27, characterized in that The receiver is specifically configured to detect first control information in a candidate resource corresponding to a candidate resource set, where the candidate resource set includes the first resource.

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