WO2019213959A1

WO2019213959A1 - Method for transmitting signal, relay device and network device

Info

Publication number: WO2019213959A1
Application number: PCT/CN2018/086589
Authority: WO
Inventors: 卢前溪; 林晖闵
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-05-11
Filing date: 2018-05-11
Publication date: 2019-11-14
Also published as: TW202005321A; CN112088556B; CN112088556A

Abstract

Disclosed by the embodiment of the present application are a method for transmitting a signal, a relay device and a network device. The method comprises: a first relay device obtains first information, the first information being used to indicate a transmission resource of the first signal; and the first relay device transmits, according to the first information, the first signal. The method, the relay device and the network device of the embodiment of the present application are advantageous for improving the performance of signal transmission.

Description

Method for transmitting signals, relay device and network device

Technical field

The embodiments of the present application relate to the field of communications, and in particular, to a method for transmitting a signal, a relay device, and a network device.

Background technique

In the Long Term Evolution (LTE) system, the backhaul between the base stations and the base station and the core network uses a wired connection, which brings a large deployment difficulty and higher to the operator. In order to solve the above problems, the 3rd Generation Partnership Project (3GPP) initiated research on wireless relay technology in the LTE-A standardization phase to provide a wireless backhaul link solution.

In the relay system, the relay node is a child node of the parent node, so the relay node needs to receive the signal sent by the parent node; at the same time, the relay node is the parent node of its child node, so it needs to send a signal to the child node. .

How to coordinate the transmission resources of the above signals in the relay system is a problem to be solved.

Summary of the invention

In view of this, the embodiments of the present application provide a method for transmitting a signal, a relay device, and a network device, which are beneficial to improving signal transmission performance.

The first aspect provides a method for transmitting a signal, where the method is applied to a relay system, where the method includes: acquiring, by the first relay device, first information, where the first information is used to indicate a transmission resource of the first signal; The first relay device sends the first signal according to the first information.

In a possible implementation manner, the relay system includes multiple levels, where the first information is used to indicate a correspondence between each of the multiple levels and a transmission resource of the first signal, or The information is used to indicate the transmission resource of the first signal allocated to the first relay device; the first relay device sends the first signal according to the first information, including: the first relay device according to the Transmitting, by the first information, the first signal on a transmission resource of the first signal corresponding to a level of the first relay device in the relay system, or the first relay device is configured according to the first information Transmitting the first signal on a transmission resource of the first signal allocated by the first relay device.

In a possible implementation manner, the first relay device acquires the first information, where the first relay device receives the first information sent by the second relay device or the network device, and the second relay device The parent node of the first relay device, or the first information is pre-stored in the first relay device.

In a possible implementation manner, the method further includes: the first relay device determining the second relay device.

In a possible implementation manner, the method further includes: the first relay device determines a level of the second relay device in the relay system; the first relay device locates the second relay device The next level of the hierarchy is determined as the level of the first relay device in the relay system.

In a possible implementation manner, the first relay device determines a level of the second relay device in the relay system, including: the first relay device according to the first information and the second relay The transmission resource of the first signal sent by the device determines the level of the second relay device in the relay system.

In a possible implementation manner, the first signal is a synchronization signal, and the first relay device determines a level of the second relay device in the relay system, including: the first relay device according to the synchronization sequence A synchronization sequence corresponding to each level in the relay system and a synchronization sequence corresponding to the synchronization signal sent by the second relay device determines a hierarchy of the second relay device in the relay system.

In a possible implementation, the first relay device determines the second relay device, and the first relay device receives the at least one first signal, where the at least one first signal is generated by at least one And transmitting, by the device, the first relay device determines the second relay device according to the at least one first signal.

In a possible implementation manner, the at least one first signal includes K first signals, where K is a positive integer greater than or equal to 1, and the first relay device determines the second middle according to the at least one first signal. And the device, comprising: the first relay device measures the strength of the K first signals; the first relay device determines the second relay device according to the strength of the K first signals.

In a possible implementation manner, the at least one first signal includes K first signals, where K is a positive integer greater than or equal to 1, and the first relay device determines the second middle according to the at least one first signal. Subsequent to the device, the first relay device determines, according to the K first signals, at least one level of the relay device that sends the K first signals; the first relay device is configured according to the size of the at least one layer Determining the second relay device.

In a possible implementation manner, the at least one first signal includes K first signals, where K is a positive integer greater than or equal to 1, and the first relay device determines the second middle according to the at least one first signal. Subsequent to the device, the first relay device determines, according to the K first signals, at least one level in which the relay device that sends the K first signals is located; the first relay device determines from the at least one level a first level; if the J relay devices of the first level send the M first signals of the K first signals, the first relay device measures the strength of the M first signals, where M is less than Or a positive integer equal to K, J is a positive integer less than or equal to M; the first relay device determines the second relay device according to the strength of the M first signals.

In a possible implementation manner, the first signal is a synchronization signal, and the first relay device sends the first signal according to the first information, including: the first relay device according to the first information, and the synchronization The synchronization relationship between the sequence and each level in the relay system is sent, and the synchronization sequence corresponding to the level of the first relay device is sent.

In a possible implementation, the first information is used to indicate a transmission resource of the first signal allocated by the first relay device, and the method further includes: the first relay device receiving the second relay The second information sent by the device, where the second information is used to indicate the transmission resource of the first signal of the at least one level above the level of the first relay device, where the second relay device is the first relay The parent node of the device.

In a possible implementation manner, the first information is carried in a broadcast message, radio resource control RRC signaling, or downlink control information DCI.

In a possible implementation, the first signal is a synchronization signal, a tracking reference signal TRS or a channel state information-reference signal CSI-RS.

A second aspect provides a method for transmitting a signal, where the method is applied to a relay system, the method includes: the second relay device sends first information to the first relay device, where the first information is used to indicate A transmission resource for a signal.

In a possible implementation manner, the second relay device is a parent node of the first relay device.

In a possible implementation manner, the relay system includes multiple levels, where the first information is used to indicate a transmission resource of the first signal corresponding to each of the multiple levels, or the first information is used by the first information. And indicating a transmission resource of the first signal allocated by the first relay device.

In a possible implementation, the first information is used to indicate a transmission resource of the first signal allocated by the first relay device, and the method further includes: the second relay device is configured to the first relay The device sends the second information, where the second information is used to indicate the transmission resource of the first signal of the at least one level above the level of the first relay device.

In a possible implementation manner, the second relay device sends the first information to the first relay device, where the second relay device uses the broadcast message, the radio resource control RRC signaling, or the downlink control information DCI to The first relay device sends the first information.

A third aspect provides a method for transmitting a signal, where the method is applied to a relay system, where the method includes: the network device sends first information to the first relay device, where the first information is used to indicate the first information. A transmission resource for indicating the first signal.

In a possible implementation manner, the network device sends the first information to the first relay device, where the network device sends the first relay device to the first relay device by using a broadcast message, a radio resource control RRC signaling, or a downlink control information DCI. Send the first message.

In a fourth aspect, a relay device is provided for performing the method of any of the above first aspect or any of the possible implementations of the first aspect. In particular, the relay device comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.

In a fifth aspect, a relay device is provided for performing the method of any of the above-mentioned second aspect or any of the possible implementations of the second aspect. In particular, the relay device comprises means for performing the method of any of the above-described second or second aspects of the second aspect.

In a sixth aspect, a network device is provided for performing the method of any of the foregoing third aspect or any of the possible implementations of the third aspect. In particular, the network device comprises means for performing the method of any of the possible implementations of the third aspect or the third aspect described above.

In a seventh aspect, a relay device is provided, the relay device comprising: a memory, a processor, an input interface, and an output interface. The memory, the processor, the input interface, and the output interface are connected by a bus system. The memory is for storing instructions for executing the memory stored instructions for performing the method of any of the first aspect or the first aspect of the first aspect.

In an eighth aspect, a relay device is provided, the relay device comprising: a memory, a processor, an input interface, and an output interface. The memory, the processor, the input interface, and the output interface are connected by a bus system. The memory is for storing instructions for executing the memory stored instructions for performing the method of any of the above-described second aspect or any of the possible implementations of the second aspect.

In a ninth aspect, a network device is provided, the network device comprising: a memory, a processor, an input interface, and an output interface. The memory, the processor, the input interface, and the output interface are connected by a bus system. The memory is for storing instructions for executing the memory stored instructions for performing the method of any of the above-described third aspect or any of the possible implementations of the third aspect.

A tenth aspect, a chip for implementing the method of any of the foregoing first aspect or any possible implementation of the first aspect, or the method of any of the foregoing second aspect or the second aspect, Or the method of any of the above third aspect or any possible implementation of the third aspect.

Specifically, the chip includes: a processor for calling and running a computer program from the memory, such that the device on which the chip is mounted performs the method in any of the possible implementations of the first aspect or the first aspect, or The method of any of the second aspect or any possible implementation of the second aspect, or the method of any of the third or third aspect of the foregoing.

In an eleventh aspect, a computer storage medium is provided for storing a method in any of the possible implementations of the first aspect or the first aspect described above, or any possible implementation of the second or second aspect above The method of the method, or the method of any of the foregoing third aspect or any possible implementation of the third aspect. Computer software instructions are used that include programs designed to perform the above aspects.

According to a twelfth aspect, a computer program product comprising instructions, when executed on a computer, causes the computer to perform the method of any of the above-described first aspect or any of the optional implementations of the first aspect, or The method of any of the alternative implementations of the second aspect or the second aspect, or the method of any of the foregoing third aspect or any of the possible implementations of the third aspect.

A thirteenth aspect, a communication system is provided, including a first relay device and a second relay device; wherein

The first relay device is configured to acquire first information, where the first information is used to indicate a transmission resource of the first signal, and send the first signal according to the first information;

The network device is configured to send first information to the first relay device, where the first information is used to indicate a transmission resource of the first signal.

Specifically, the first relay device is configured to perform the method in each implementation manner of the foregoing first aspect, and the second relay device is configured to perform the method in each implementation manner of the foregoing second aspect.

In a fourteenth aspect, a communication system is provided, including a first relay device and a network device;

Specifically, the first relay device is configured to perform the method in each implementation manner of the foregoing first aspect, and the network device is configured to perform the method in each implementation manner of the foregoing third aspect.

These and other aspects of the present application will be more readily apparent from the following description of the embodiments.

DRAWINGS

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

FIG. 2 is a schematic block diagram of a method of transmitting a signal according to an embodiment of the present application.

FIG. 3 shows a hierarchical distribution diagram of a relay network of an embodiment of the present application.

FIG. 4 shows another schematic block diagram of a method of transmitting a signal according to an embodiment of the present application.

FIG. 5 shows still another schematic block diagram of a method for transmitting signals according to an embodiment of the present application.

FIG. 6 shows a schematic block diagram of a relay device of an embodiment of the present application.

FIG. 7 shows another schematic block diagram of a relay device according to an embodiment of the present application.

FIG. 8 shows a schematic block diagram of a network device of an embodiment of the present application.

FIG. 9 shows still another schematic block diagram of a relay device according to an embodiment of the present application.

FIG. 10 shows still another schematic block diagram of a relay device according to an embodiment of the present application.

FIG. 11 is another schematic block diagram of a network device according to an embodiment of the present application.

FIG. 12 shows a schematic block diagram of a chip of an embodiment of the present application.

FIG. 13 shows another schematic block diagram of a chip of an embodiment of the present application.

FIG. 14 shows still another schematic block diagram of the chip of the embodiment of the present application.

FIG. 15 shows a schematic block diagram of a communication system of an embodiment of the present application.

FIG. 16 shows a schematic block diagram of a communication system of an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments.

It should be understood that the technical solutions in the embodiments of the present application may be applied to various communication systems, such as a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, and an LTE Time Division Duplex (TDD). , Universal Mobile Telecommunication System (UMTS), New Radio (NR) or future 5G system evolution.

The terminal device in the embodiment of the present application may refer to a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless device. Communication device, user agent or user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication. Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks, or in the future evolution of the Public Land Mobile Network (PLMN) The terminal device and the like are not limited in the embodiment of the present application.

The network device in the embodiment of the present application may be a device for communicating with the terminal device, where the network device may be a base station (NodeB, NB) in the WCDMA system, or may be an evolved base station (eNB) in the LTE system. Or eNodeB), which may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a future 5G network. The network device in the network device or the network device in the future evolved PLMN network is not limited in this embodiment.

In the LTE system, the backhaul link between the base stations and the base station and the core network uses a wired connection, which brings greater deployment difficulty and higher network cost to the operator. To solve the above problem, 3GPP Research on wireless relay technology was initiated during the LTE-A standardization phase to provide a wireless backhaul link solution.

In the relay system, a relay node, that is, a relay node (RN) is wirelessly connected to its home eNB cell, and the home eNB of the relay node is called an anchor base station (Donor eNB, DeNB). The network architecture of the relay system may be as shown in FIG. 1. The network architecture 100 may include an anchor node 110, that is, a DeNB, and the anchor node 110 may be an access network node, or may be a core network node. . The network architecture 100 can also include at least one relay device 120 and terminal device 130. The network architecture mainly includes three radio links: a backhaul link between the RN and the DeNB, an access link between the UE and the RN, and a direct transmission between the UE and the eNB. Link (Direct link).

In a relay system, a node of a node is also called a parent node, and a node of the next level is also called a child node. As shown in FIG. 1, for RN1, DeNB is a parent node, RN2 is a child node, and for RN2, RN1 is a parent node, and UE is a child node.

It should be understood that the embodiment of the present application is not limited to the relay extension between the network nodes shown in FIG. 1 , and may also be applied to the relay expansion between terminal devices, for example, there may be one between the terminal device and the terminal device. Multiple relay nodes.

FIG. 2 shows a schematic block diagram of a method 200 of transmitting signals in an embodiment of the present application. The method 200 is applied to a relay system. As shown in FIG. 2, the first relay device may be the relay node 120 described in FIG. 1. The method 200 includes some or all of the following contents:

S210. The first relay device acquires first information, where the first information is used to indicate a transmission resource of the first signal.

S220. The first relay device sends the first signal according to the first information.

First, the first signal may be any one of a synchronization signal, a channel state information reference signal (CSI-RS), or a tracking reference signal (TRS). A signal can also be a broadcast signal, data or control signaling, and the like. It should be understood that the following multiple embodiments are described by taking the first signal as a synchronization signal as an example, but the embodiment of the present application is not limited thereto. The relay system of the embodiment of the present application can support multiple hops or support multiple levels.

In the LTE and NR systems, the terminal or other device acquires the time-frequency synchronization of the network by searching the synchronization signal of the system, and accesses the system. In the relay system, the relay device is a child node of the parent node, so it needs to search the synchronization signal of the parent node to access the system of the parent node; at the same time, the relay device is the parent node of its child node, so it needs to be sent. The synchronization signal is such that the child node can access the relay system. Moreover, for a multi-hop relay system, a low-level node can access the upper-level relay system or a higher-level relay system. As shown in FIG. 3, the relay system includes four levels, the level 1 is a DeNB, and the levels 2, 3, and 4 are relay devices, and the RN3 can access the uplink level relay device RN1 or RN2, and can also be connected. For a higher-level node, such as a base station, the RN4 can access the RN3 of the upper level or the RN2 of the higher level. In Figure 3, the solid line represents the direct link and the dashed line represents the alternate link. Due to the limitation of half-duplex, the relay device cannot simultaneously transmit the synchronization signal when receiving the synchronization signal of the previous stage. So how the relay device acquires the synchronization resource to send the synchronization signal to the child node is a problem to be solved. Specifically, in the embodiment of the present application, the first relay device may obtain the first information, where the first information may be used to indicate the synchronization resource, and the first relay device may naturally obtain the synchronization signal according to the first information. The transmitted resource, in turn, can send a synchronization signal. For example, the network or the system may pre-configure the number of layers of the relay system in advance (the relay system may include multiple levels), or pre-configure the synchronization resources corresponding to each level in advance, that is, the first information is used for Indicates the synchronization resource corresponding to each level in the relay system. Then, when the first relay device acquires the first information, and determines the level at which the relay device is located in the relay system, the first relay device may determine the synchronization resource corresponding to the first relay device. . For example, the network or the system may not pre-configure the correspondence between each level of the relay system and the synchronization resource in advance, and the relay device or the network device of the upper level may dynamically allocate the synchronization resource to the relay device of the next level. Then, the synchronization signal can be sent according to the allocated synchronization resource.

Therefore, the method for transmitting a signal in the embodiment of the present application is advantageous for improving the performance of signal transmission.

Optionally, in the embodiment of the present application, the relay system includes multiple levels, where the first information is used to indicate a correspondence between each of the multiple levels and a transmission resource of the first signal, or The first information is used to indicate the transmission resource of the first signal allocated to the first relay device; the first relay device sends the first signal according to the first information, including: the first relay device Transmitting, according to the first information, the first signal on a transmission resource of the first signal corresponding to a level of the first relay device in the relay system, or the first relay device is configured according to the first information Transmitting the first signal on a transmission resource of the first signal allocated by the first relay device.

Specifically, the first information may be pre-configured by the network or the system to the first relay device, for example, by using a broadcast message, Radio Resource Control (RRC) signaling, and downlink control information (Downlink Control Information). , DCI) is sent to the first relay device, and may also be pre-stored in the first relay device. The first relay device can obtain the synchronization resource corresponding to the level of the first relay device by searching the corresponding relationship between the level indicated by the first information and the synchronization resource, as soon as the first relay device is in the hierarchy of the relay system. That is, the first relay device may send a synchronization signal on the synchronization resource corresponding to the level of the first relay device. Alternatively, after the first relay device acquires the synchronization resource allocated thereto according to the first information, the synchronization signal may be sent on the synchronization resource.

Optionally, the first information may be sent by the second relay device or the network device to the first relay device, where the second relay device is the parent node of the first relay device.

Further, the first relay device needs to determine the second relay device.

Optionally, the determining, by the first relay device, the second relay device includes: the first relay device receiving at least one of the first signals, where the at least one first signal is by at least one And transmitting, by the device, the first relay device determines the second relay device according to the at least one of the first signals. Specifically, the first relay device may determine the second relay device in the following manner.

Embodiment 1: The at least one first signal includes K first signals, and K is a positive integer greater than or equal to 1. The first relay device determines the second relay device according to the at least one first signal, and includes: If K is equal to 1, that is, the first relay device receives a first signal, the first relay device uses the device that sends the first signal as the second relay device, that is, the first relay device. The parent node. If K is greater than 1, the first relay device measures the strength of the K first signals; the first relay device determines the second relay device according to the strength of the K first signals. Specifically, the first relay device may determine, as the second relay device, a node corresponding to the first signal with the highest intensity among the K first signals, and the second relay device may also use the strength of the K first signals. The node corresponding to the second highest first signal is determined to be the second relay device. The first relay device may also determine the second relay device by combining other parameters with the strength of the K first signals. This embodiment of the present application does not limit this.

Embodiment 2: The at least one first signal includes K first signals, and K is a positive integer greater than or equal to 1. The first relay device determines the second relay device according to the at least one first signal, and includes: Determining, by the first relay device, at least one level of the relay device that sends the K first signals according to the K first signals; the first relay device determining the second according to the size of the at least one layer Relay device. Specifically, the first terminal device may determine, according to the transmission resource of the K first signals and the first information, that is, the correspondence between the transmission resources and the hierarchy, determine a level at which the node that sends the K first signals is located, and send the K The level at which the nodes of the first signal are located may include multiple levels, and then the first relay device may select one of the plurality of levels as the parent node. For example, the node with the highest or lowest level can be selected as the parent node, and the embodiment of the present application is not limited thereto.

Embodiment 3: The at least one first signal includes K first signals, and K is a positive integer greater than or equal to 1. The first relay device determines the second relay device according to the at least one first signal, and includes: Determining, by the first relay device, at least one level of the relay device that sends the K first signals according to the K first signals; the first relay device determines the first level from the at least one level; The J relay devices of the first level send M first signals of the K first signals, and the first relay device measures the strength of the M first signals, where M is less than or equal to K An integer, J is a positive integer less than or equal to M; the first relay device determines the second relay device according to the strength of the M first signals. Specifically, if the first relay device may include multiple nodes according to at least one level selected by the relay device that sends the K first signals, the first relay device may also combine the multiple The strength of the first signal sent by the nodes is further selected. For example, a node corresponding to the first signal having the highest intensity among the first signals transmitted by the plurality of nodes may be used as a parent node. In the embodiment of the present application, the at least one level of the relay device that sends the K first signals is determined according to the K first signals, as shown in Embodiment 1 and Embodiment 2. For brevity, details are not described herein again.

Embodiment 4: The at least one first signal includes K first signals, and K is a positive integer greater than or equal to 1. The first relay device determines the second relay device according to the at least one first signal, and includes: Determining, by the first relay device, at least one level of the relay device that sends the K first signals according to the K first signals; the first relay device determines the first level from the at least one level; The J relay devices of the first level send M first signals of the K first signals, and the first relay device measures the strength of the M first signals, where M is less than or equal to K An integer, J is a positive integer less than or equal to M; the first relay device determines the second relay device according to the strength of the M first signals. Specifically, the first terminal device may further determine, according to the synchronization sequence corresponding to the K synchronization signals and the correspondence between the synchronization sequence and the level, the level at which the node that sends the K synchronization signals is located, and send the K synchronization signals. The hierarchy at which the node is located may include multiple levels, and then the first relay device may select one of the multiple levels as the first level. For example, the highest or lowest level of the hierarchy may be selected as the first level. Further, if a relay device is included in the first level, the relay device is selected as the parent node of the first relay device, that is, the second relay device, if multiple The relay device can measure the strength of the first signal of the multiple relay devices, and select the relay device with the highest signal strength as the parent node of the first relay device, that is, the second relay device. In this embodiment, different levels of synchronization may be corresponding to different synchronization sequences. In the same level, different relay devices may also be in different synchronization sequences, which is not limited in this embodiment.

It should be noted that different synchronization sequences can be used not only to distinguish different levels in the relay system, but also to distinguish different relay devices on the same level.

Optionally, if the first information is used to indicate a correspondence between each of the multiple levels and the transmission resource of the first signal, the method further includes: the first relay device may determine the first relay device The level in the relay system. Specifically, the first relay device may determine a level of the first relay device in the relay system in the following manner.

Embodiment 5: The first relay device determines, according to the first information and a transmission resource of the first signal sent by the second relay device, a level of the second relay device in the relay system, the second The relay device is a parent node of the first relay device; the first relay device determines the next level of the hierarchy in which the second relay device is located as a level of the first relay device in the relay system. .

The first relay device can access the system by searching for a synchronization signal. And determining, by the relay device that sends the searched synchronization signal, the level of the first relay device in the relay system at a level in the relay system. For example, the first relay device searches for a synchronization signal and accesses the network of the relay device that sends the synchronization signal, and then the relay device that sends the synchronization signal is the parent of the first relay device. node. The first relay device may determine, according to the correspondence indicated by the first information and the transmission resource of the synchronization signal, a hierarchy of the parent node of the first relay device in the relay system, where the first relay device determines After the parent node is at the level, the next level can be used as the level of the first relay device. For example, the maximum level supported by the relay system is N, corresponding to levels 0, 1, 2, ..., N-1, where level 0 represents the highest level, N is a positive integer greater than or equal to 1, and the level of the parent node is F, F is an integer less than or equal to N-1, the level of the first relay device is (F+1), and if the level of the parent node is N-1, the level of the first relay device is 0. Or, the parent node is a node of the final level, and the access of the child node is not allowed. This embodiment does not limit this. Taking FIG. 3 as an example, the relay system includes four levels. If the level of the parent node of the first relay device is 2, the level of the first relay device is 3.

Embodiment 6: The network or the system may further preset the correspondence between the level and the synchronization sequence, and each synchronization signal has a corresponding synchronization sequence, and then the first relay device may according to the synchronization sequence corresponding to the received synchronization signal and the synchronization sequence Corresponding relationship, it is possible to determine the level of the parent node of the first relay device. Further, the first relay device may determine the next level of the hierarchy where the parent node is located as the level of the first relay device in the relay system.

Optionally, in the embodiment of the present application, the first signal is a synchronization signal, and the first relay device sends the first signal according to the first information, including: the first relay device is configured according to the first information And a synchronization relationship between the synchronization sequence and each level in the relay system, and sending a synchronization sequence corresponding to the level of the first relay device.

If the first relay device pre-stores the mapping relationship between the synchronization sequence and the tier, or the network device pre-configures the mapping relationship between the synchronization sequence and the tier to the first relay device, when the first relay device determines After the synchronization resource of the synchronization signal is sent to the child node, the synchronization sequence corresponding to the layer where the first relay device is located may be sent on the determined synchronization resource.

Optionally, if the parent node or the network device dynamically allocates the transmission resource of the first signal to the first relay device, the first information is used to indicate the transmission resource of the first signal allocated by the first relay device, where The method further includes: the first relay device receives the second information sent by the second relay device, where the second information is used to indicate the first signal of the at least one level above the level of the first relay device Transmission resources.

The parent node may send the parent node and the transmission resource corresponding to the higher level of the parent node to the first relay device. For example, the level of the first relay device is G, and the parent node may have a level of (G-1), (G-2), ..., (GM) (M is a positive integer less than or equal to G, and level 0 represents The highest level) transmission resource is sent to the first relay device. M can be a configurable parameter. Then, the first relay device can obtain the transmission resources of the parent node and the higher layer, and when it allocates the transmission resource of the first signal to the child node, the transmission resource conflict with the higher layer can be avoided.

Alternatively, when the network or system pre-configures the transmission resources for each level in the relay system, it may also be considered that the transmission resources of different levels are staggered in time. For example, at least the transmission resources of two adjacent levels are staggered in time, and transmission resource conflicts can also be avoided.

FIG. 4 is a schematic block diagram of a method 300 for transmitting signals according to an embodiment of the present application. As shown in FIG. 4, the method 300 includes some or all of the following contents:

S310. The second relay device sends first information to the first relay device, where the first information is used to indicate a transmission resource of the first signal.

It should be noted that the second relay device may be a parent node of the first relay device.

Optionally, in the embodiment of the present application, the relay system includes multiple levels, where the first information is used to indicate a transmission resource of the first signal corresponding to each of the multiple levels, or the first The information is used to indicate a transmission resource of the first signal allocated for the first relay device.

Optionally, in the embodiment of the present application, the first information is used to indicate a transmission resource of the first signal allocated by the first relay device, and the method further includes: the second relay device is configured to the first The relay device sends the second information, where the second information is used to indicate the transmission resource of the first signal of the at least one level above the level of the first relay device.

Optionally, in the embodiment of the present application, the second relay device sends the first information to the first relay device, where the second relay device controls the RRC signaling or the downlink control information by using a broadcast message or a radio resource. The DCI sends the first information to the first relay device.

Optionally, in the embodiment of the present application, the first signal is a synchronization signal, a tracking reference signal TRS, or a channel state information-reference signal CSI-RS.

It should be understood that the interaction between the second relay device and the first relay device described by the second relay device and related features, functions, and the like correspond to related characteristics and functions of the first relay device. That is, what message is sent by the first relay device to the second relay device, and the second relay device receives the corresponding message from the first relay device.

FIG. 5 is a schematic block diagram of a method 400 for transmitting a signal according to an embodiment of the present application. As shown in FIG. 5, the method 400 includes some or all of the following contents:

S410. The network device sends the first information to the first relay device, where the first information is used to indicate that the first information is used to indicate a transmission resource of the first signal.

Optionally, in the embodiment of the present application, the network device sends the first information to the first relay device, where the network device sends the message to the network by using a broadcast message, a radio resource control RRC signaling, or a downlink control information DCI. The first relay device sends the first information.

It should be understood that the interaction between the network device described by the network device and the first relay device and related features, functions, and the like correspond to related features and functions of the first relay device. That is, what message is sent by the first relay device to the network device, and the network device receives the corresponding message from the first relay device.

It should also be understood that, in various embodiments of the present application, the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be implemented in the present application. The implementation of the examples constitutes any limitation.

It should also be understood that the term "and/or" herein is merely an association describing the associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, while A and B, there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

The method for transmitting signals according to an embodiment of the present application is described in detail above. Hereinafter, an apparatus for transmitting signals according to an embodiment of the present application will be described with reference to FIG. 6 to FIG. 11. The technical features described in the method embodiments are applicable to the following apparatus implementation. example.

FIG. 6 shows a schematic block diagram of a relay device 500 of an embodiment of the present application. The relay device is a first relay device. As shown in FIG. 5, the relay device 500 includes:

The obtaining unit 510 is configured to acquire first information, where the first information is used to indicate a transmission resource of the first signal;

The sending unit 520 is configured to send the first signal according to the first information.

Optionally, in the embodiment of the present application, the relay system includes multiple levels, where the first information is used to indicate a correspondence between each of the multiple levels and a transmission resource of the first signal, or The first information is used to indicate a transmission resource of the first signal allocated to the first relay device; the sending unit is specifically configured to: in the relay system with the first relay device according to the first information Transmitting the first signal on the transmission resource of the first signal corresponding to the tier, or transmitting the first signal on the transmission resource of the first signal allocated by the first relay device according to the first information.

Optionally, in the embodiment of the present application, the acquiring unit is specifically configured to: receive the first information sent by the second relay device or the network device, where the second relay device is a parent node of the first relay device Or, the first information is pre-stored in the first relay device.

Optionally, in the embodiment of the present application, the relay device further includes: a first determining unit, configured to determine the second relay device.

Optionally, in the embodiment of the present application, the relay device further includes: a second determining unit, configured to determine a level of the second relay device in the relay system; and a third determining unit, configured to: The next level of the hierarchy in which the second relay device is located is determined as the level of the first relay device in the relay system.

Optionally, in the embodiment of the present application, the second determining unit is specifically configured to: determine, according to the first information and a transmission resource of the first signal sent by the second relay device, that the second relay device is in the The hierarchy in the relay system.

Optionally, in the embodiment of the present application, the first signal is a synchronization signal, and the second determining unit is specifically configured to: according to a synchronization sequence, a correspondence between each level in the relay system and the second relay device. The synchronization sequence corresponding to the sent synchronization signal determines the level of the second relay device in the relay system.

Optionally, in the embodiment of the present application, the first determining unit is specifically configured to: receive at least one first signal, where the at least one first signal is sent by at least one relay device, and according to the at least one The first signal determines the second relay device.

Optionally, in the embodiment of the present application, the at least one first signal includes K first signals, where K is a positive integer greater than or equal to 1, and the first determining unit determines, according to the at least one first signal, the The second relay device includes: measuring an intensity of the K first signals; determining the second relay device according to the strength of the K first signals.

Optionally, in the embodiment of the present application, the at least one first signal includes K first signals, where K is a positive integer greater than or equal to 1, and the first determining unit determines, according to the at least one first signal, the The second relay device includes: determining, according to the K first signals, at least one level of the relay device that sends the K first signals one by one; determining the first level from the at least one level; The J relay devices of the first level send M first signals of the K first signals, measure the strength of the J first signals, M is a positive integer less than or equal to K, and J is less than or equal to a positive integer of M; determining the second relay device based on the strength of the M first signals.

Optionally, in the embodiment of the present application, the first signal is a synchronization signal, and the sending unit is specifically configured to: send the first information according to the correspondence between the first information and the synchronization sequence and each level in the relay system. A synchronization sequence corresponding to the level at which the relay device is located.

Optionally, in the embodiment of the present application, the first information is used to indicate a transmission resource of the first signal allocated by the first relay device, and the relay device further includes: a receiving unit, configured to receive the first The second information sent by the second relay device, where the second information is used to indicate the transmission resource of the first signal of the at least one level above the level of the first relay device, where the second relay device is the first The parent node of a relay device.

Optionally, in the embodiment of the present application, the first information is carried in a broadcast message, radio resource control RRC signaling, or downlink control information DCI.

It should be understood that the relay device 500 according to the embodiment of the present application may correspond to the relay device in the method embodiment of the present application, and the foregoing and other operations and/or functions of the respective units in the relay device 500 respectively implement FIG. 2 The corresponding process of the first relay device in the method is not described here for brevity.

FIG. 7 shows a schematic block diagram of a relay device 600 of an embodiment of the present application. The relay device is applied to the relay system, and the relay device is the first relay device. As shown in FIG. 7, the relay device 600 includes:

The sending unit 610 is configured to send, to the first relay device, first information, where the first information is used to indicate a transmission resource of the first signal.

Optionally, in the embodiment of the present application, the second relay device is a parent node of the first relay device.

Optionally, in the embodiment of the present application, the first information is used to indicate a transmission resource of the first signal that is allocated by the first relay device, and the sending unit is further configured to: send to the first relay device The second information is used to indicate a transmission resource of the first signal of the at least one level above the layer where the first relay device is located.

Optionally, in the embodiment of the present application, the sending unit is specifically configured to: send, by the second relay device, the first to the first relay device by using a broadcast message, a radio resource control RRC signaling, or a downlink control information DCI. information.

It should be understood that the relay device 600 according to the embodiment of the present application may correspond to the relay device in the method embodiment of the present application, and the foregoing and other operations and/or functions of the respective units in the relay device 600 respectively implement FIG. 4 The corresponding process of the second relay device in the method is not described here for brevity.

FIG. 8 shows a schematic block diagram of a network device 700 of an embodiment of the present application. As shown in FIG. 8, the network device is applied to a relay system, and the network device 700 includes:

The sending unit 710 is configured to send, to the first relay device, first information, where the first information is used to indicate that the first information is used to indicate a transmission resource of the first signal.

Optionally, in the embodiment of the present application, the sending unit is specifically configured to: send, by the network device, the first information to the first relay device by using a broadcast message, a radio resource control RRC signaling, or a downlink control information DCI.

It should be understood that the network device 700 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the foregoing and other operations and/or functions of the respective units in the network device 700 respectively implement the network in the method of FIG. The corresponding process of the device is not described here for brevity.

As shown in FIG. 9, the embodiment of the present application further provides a relay device 800, which may be the relay device 500 in FIG. 6, which can be used to execute the method corresponding to the method 200 in FIG. The content of a relay device. The relay device 800 shown in FIG. 9 includes a processor 810 that can call and run a computer program from the memory to implement the method in the embodiments of the present application.

Optionally, as shown in FIG. 9, the relay device 800 may further include a memory 820. The processor 810 can call and run a computer program from the memory 820 to implement the method in the embodiment of the present application.

The memory 820 may be a separate device independent of the processor 810 or may be integrated in the processor 810.

Optionally, as shown in FIG. 9, the relay device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 to communicate with other devices, in particular, may send information or data to other devices, or receive Information or data sent by other devices.

Wherein, the transceiver 830 can include a transmitter and a receiver. The transceiver 830 may further include an antenna, and the number of the antennas may be one or more.

Optionally, the relay device 800 can be the relay device in the embodiment of the present application, and the relay device 800 can implement the corresponding process implemented by the relay device in each method of the embodiment of the present application. No longer.

In a specific embodiment, the first receiving unit, the second receiving unit, and the transmitting unit in the relay device 600 may be implemented by the transceiver 830 in FIG. The first determining unit, the second determining unit, the third determining unit, and the obtaining unit in the relay device 600 may be implemented by the processor 810 in FIG.

As shown in FIG. 10, the embodiment of the present application further provides a relay device 900, which may be the relay device 600 in FIG. 7, which can be used to execute the method corresponding to the method 300 in FIG. The content of the second relay device. The relay device 900 shown in FIG. 10 includes a processor 910 that can call and run a computer program from a memory to implement the method in the embodiments of the present application.

Optionally, as shown in FIG. 10, the relay device 900 may further include a memory 920. The processor 910 can call and run a computer program from the memory 920 to implement the method in the embodiment of the present application.

The memory 920 may be a separate device independent of the processor 910 or may be integrated in the processor 910.

Optionally, as shown in FIG. 10, the relay device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices, in particular, may send information or data to other devices, or receive Information or data sent by other devices.

Among them, the transceiver 930 can include a transmitter and a receiver. The transceiver 930 may further include an antenna, and the number of the antennas may be one or more.

Optionally, the relay device 900 can be the relay device of the embodiment of the present application, and the relay device 900 can implement a corresponding process implemented by the relay device in each method of the embodiment of the present application. No longer.

In a specific embodiment, the transmitting unit in the relay device 700 can be implemented by the transceiver 930 in FIG.

As shown in FIG. 11, the embodiment of the present application further provides a network device 1000, which may be the network device 700 in FIG. 8, which can be used to execute the content of the network device corresponding to the method 400 in FIG. . The network device 1000 shown in FIG. 11 includes a processor 1010 that can call and run a computer program from a memory to implement the method in the embodiments of the present application.

Optionally, as shown in FIG. 11, the network device 1000 may further include a memory 1020. The processor 1010 can call and run a computer program from the memory 1020 to implement the method in the embodiment of the present application.

The memory 1020 may be a separate device independent of the processor 1010 or may be integrated in the processor 1010.

Optionally, as shown in FIG. 11, the network device 1000 may further include a transceiver 1030, and the processor 1010 may control the transceiver 1030 to communicate with other devices, in particular, may send information or data to other devices, or receive other Information or data sent by the device.

Wherein, the transceiver 1030 can include a transmitter and a receiver. The transceiver 1030 may further include an antenna, and the number of the antennas may be one or more.

Optionally, the network device 1000 can be the network device of the embodiment of the present application, and the network device 1000 can implement the corresponding processes implemented by the network device in the methods of the embodiments of the present application. For brevity, no further details are provided herein.

In a specific embodiment, the transmitting unit in network device 700 can be implemented by transceiver 1030 in FIG.

FIG. 12 is a schematic block diagram of a chip 2000 in accordance with an embodiment of the present application. The chip 2000 shown in FIG. 12 includes a processor 2010 that can be called from a memory and run by a computer program to implement the method 200 in the embodiments of the present application.

Optionally, as shown in FIG. 12, the chip 2000 may further include a memory 2020. The processor 2010 can call and run a computer program from the memory 2020 to implement the method in the embodiment of the present application.

The memory 2020 may be a separate device independent of the processor 2010, or may be integrated in the processor 2010.

Optionally, the chip 2000 may further include an input interface 2030. The processor 2010 can control the input interface 2030 to communicate with other devices or chips. Specifically, information or data sent by other devices or chips can be acquired.

Optionally, the chip 2000 may further include an output interface 2040. The processor 2010 can control the output interface 2040 to communicate with other devices or chips. Specifically, information or data can be output to other devices or chips.

Optionally, the chip is applicable to the first relay device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the terminal device in the method 200 of the embodiment of the present application. For brevity, no further description is provided herein. .

It should be understood that the chip mentioned in the embodiment of the present application may also be referred to as a system level chip, a system chip, a chip system or a system on chip.

FIG. 13 is a schematic block diagram of a chip 3000 in accordance with an embodiment of the present application. The chip 3000 shown in FIG. 13 includes a processor 3010 that can be called from a memory and run a computer program to implement the method 300 in the embodiments of the present application.

Optionally, as shown in FIG. 13, the chip 3000 may further include a memory 3020. The processor 3010 can call and run a computer program from the memory 3020 to implement the method in the embodiment of the present application.

The memory 3020 may be a separate device independent of the processor 3010 or may be integrated in the processor 3010.

Optionally, the chip 3000 may further include an input interface 3030. The processor 3010 can control the input interface 3030 to communicate with other devices or chips. Specifically, information or data sent by other devices or chips can be acquired.

Optionally, the chip 3000 may further include an output interface 3040. The processor 3010 can control the output interface 3040 to communicate with other devices or chips. Specifically, information or data can be output to other devices or chips.

Optionally, the chip can be applied to the second relay device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the terminal device in the method 300 of the embodiment of the present application. .

FIG. 14 is a schematic block diagram of a chip 4000 in accordance with an embodiment of the present application. The chip 4000 shown in FIG. 14 includes a processor 4010 that can call and run a computer program from memory to implement the method 400 in the embodiments of the present application.

Alternatively, as shown in FIG. 14, the chip 4000 may further include a memory 4020. The processor 4010 can call and run a computer program from the memory 4020 to implement the method in the embodiment of the present application.

The memory 4020 may be a separate device independent of the processor 4010 or may be integrated in the processor 4010.

Optionally, the chip 4000 may further include an input interface 4030. The processor 4010 can control the input interface 4030 to communicate with other devices or chips. Specifically, information or data sent by other devices or chips can be acquired.

Optionally, the chip 4000 may further include an output interface 4040. The processor 4010 can control the output interface 4040 to communicate with other devices or chips. Specifically, information or data can be output to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in the method 400 of the embodiment of the present application. For brevity, no further details are provided herein.

FIG. 15 is a schematic block diagram of a communication system 5000 in accordance with an embodiment of the present application. As shown in FIG. 15, the communication system 5000 includes a first relay device 5010 and a second relay device 5020. The first relay device 5010 is configured to acquire first information, where the first information is used to indicate a transmission resource of the first signal, and send the first signal according to the first information;

The second relay device 5020 is configured to send first information to the first relay device, where the first information is used to indicate a transmission resource of the first signal.

The first relay device 5010 can be used to implement the corresponding function implemented by the first relay device in the foregoing method 200, and the composition of the first relay device 5010 can be as shown in the relay device 500 in FIG. For the sake of brevity, it will not be repeated here.

The second relay device 5020 can be used to implement the corresponding function implemented by the second relay device in the foregoing method 300, and the composition of the second relay device 5020 can be as shown in the relay device 600 in FIG. For the sake of brevity, it will not be repeated here.

16 is a schematic block diagram of a communication system 6000 in accordance with an embodiment of the present application. As shown in FIG. 16, the communication system 6000 includes a first relay device 6010 and a network device 6020. The first relay device 6010 is configured to acquire first information, where the first information is used to indicate a transmission resource of the first signal, and send the first signal according to the first information;

The network device 6020 is configured to send, to the first relay device, first information, where the first information is used to indicate a transmission resource of the first signal.

The first relay device 6010 can be used to implement the corresponding function implemented by the first relay device in the foregoing method 200, and the composition of the first relay device 6010 can be as shown in the relay device 600 in FIG. For the sake of brevity, it will not be repeated here.

The network device 6020 can be used to implement the corresponding functions implemented by the network device in the foregoing method 400, and the composition of the network device 6020 can be as shown in the network device 600 in FIG. 8. For brevity, no further details are provided herein.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

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

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

This functionality, if implemented as a software functional unit and sold or used as a standalone product, can be stored on a computer readable storage medium. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of protection of the claims.

Claims

A method of transmitting a signal, the method being applied to a relay system, the method comprising:

The first relay device acquires first information, where the first information is used to indicate a transmission resource of the first signal;

The first relay device sends the first signal according to the first information.
The method according to claim 1, wherein the relay system comprises a plurality of levels, and the first information is used to indicate a transmission resource of each of the plurality of levels and the first signal. Corresponding relationship, or the first information is used to indicate a transmission resource of the first signal allocated by the first relay device;

Sending, by the first relay device, the first signal according to the first information, including:

Transmitting, by the first relay device, the first signal on a transmission resource of the first signal corresponding to a level of the first relay device in the relay system according to the first information, where or

The first relay device sends the first signal on a transmission resource of the first signal allocated by the first relay device according to the first information.
The method according to claim 1 or 2, wherein the acquiring, by the first relay device, the first information comprises:

The first relay device receives the first information sent by the second relay device or the network device, where the second relay device is a parent node of the first relay device; or

The first information is pre-stored in the first relay device.
The method of claim 3, wherein the method further comprises:

The first relay device determines the second relay device.
The method of claim 4, wherein the method further comprises:

Determining, by the first relay device, a level of the second relay device in the relay system;

The first relay device determines a lower level of the level in which the second relay device is located as a level of the first relay device in the relay system.
The method according to claim 5, wherein the determining, by the first relay device, the level of the second relay device in the relay system comprises:

The first relay device determines a level of the second relay device in the relay system according to the first information and a transmission resource of the first signal sent by the second relay device.
The method according to claim 5, wherein the first signal is a synchronization signal, and the first relay device determines a level of the second relay device in the relay system, including:

Determining, by the first relay device, that the second relay device is located according to a synchronization sequence corresponding to each level in the relay system and a synchronization sequence corresponding to the synchronization signal sent by the second relay device. The hierarchy in the relay system.
The method according to any one of claims 4 to 7, wherein the determining, by the first relay device, the second relay device comprises:

The first relay device receives at least one of the first signals, and the at least one first signal is sent by at least one relay device;

The first relay device determines the second relay device according to the at least one of the first signals.
The method according to claim 8, wherein the at least one first signal comprises K first signals, K is a positive integer greater than or equal to 1, and the first relay device is configured according to the at least one Determining the first signal, determining the second relay device, including:

The first relay device measures an intensity of the K first signals;

The first relay device determines the second relay device according to the strength of the K first signals.
The method according to claim 8, wherein the at least one first signal comprises K first signals, K is a positive integer greater than or equal to 1, and the first relay device is configured according to the at least one Determining the first signal, determining the second relay device, including:

Determining, by the first relay device, at least one level of a relay device that sends the K first signals according to the K first signals;

The first relay device determines the second relay device according to the size of the at least one layer.
The method according to claim 8, wherein the at least one first signal comprises K first signals, K is a positive integer greater than or equal to 1, and the first relay device is configured according to the at least one The first signal determines the second relay device, including:

Determining, by the first relay device, at least one level of a relay device that sends the K first signals according to the K first signals;

Determining, by the first relay device, the first level from the at least one level;

If the J relay devices of the first level send the M first signals of the K first signals, the first relay device measures the strength of the M first signals, where M is less than Or a positive integer equal to K, J is a positive integer less than or equal to M;

The first relay device determines the second relay device according to the strength of the M first signals.
The method according to any one of claims 1 to 11, wherein the first signal is a synchronization signal, and the first relay device transmits the first signal according to the first information, including :

The first relay device sends a synchronization sequence corresponding to the level of the first relay device according to the first information and the corresponding relationship between the synchronization sequence and each level in the relay system.
The method according to any one of claims 1 to 12, wherein the first information is used to indicate a transmission resource of the first signal allocated for the first relay device, and the method further include:

The first relay device receives the second information sent by the second relay device, where the second information is used to indicate the first signal of the at least one level above the level where the first relay device is located. The resource is transmitted, and the second relay device is a parent node of the first relay device.
The method according to any one of claims 1 to 13, wherein the first information is carried in a broadcast message, radio resource control RRC signaling or downlink control information DCI.
The method according to any one of claims 11 to 14, wherein the first signal is a synchronization signal, a tracking reference signal TRS or a channel state information-reference signal CSI-RS.
A method of transmitting a signal, the method being applied to a relay system, the method comprising:

The second relay device sends first information to the first relay device, where the first information is used to indicate a transmission resource of the first signal.
The method according to claim 16, wherein the second relay device is a parent node of the first relay device.
The method according to claim 16 or 17, wherein the relay system comprises a plurality of levels, the first information being used to indicate the first signal corresponding to each of the plurality of levels a transmission resource, or the first information is used to indicate a transmission resource of the first signal allocated for the first relay device.
The method according to any one of claims 16 to 18, wherein the first information is used to indicate a transmission resource of the first signal allocated for the first relay device, and the method further include:

The second relay device sends second information to the first relay device, where the second information is used to indicate the first signal of at least one level above the level where the first relay device is located Transmission resources.
The method according to any one of claims 16 to 19, wherein the sending, by the second relay device, the first information to the first relay device comprises:

The second relay device sends the first information to the first relay device by using a broadcast message, radio resource control RRC signaling, or downlink control information DCI.
The method according to any one of claims 16 to 20, wherein the first signal is a synchronization signal, a tracking reference signal TRS or a channel state information-reference signal CSI-RS.
A method of transmitting a signal, the method being applied to a relay system, the method comprising:

The network device sends the first information to the first relay device, where the first information is used to indicate that the first information is used to indicate a transmission resource of the first signal.
The method according to claim 22, wherein the relay system comprises a plurality of levels, the first information being used to indicate transmission of the first signal corresponding to each of the plurality of levels The resource, or the first information, is used to indicate a transmission resource of the first signal allocated for the first relay device.
The method according to claim 22 or 23, wherein the sending, by the network device, the first information to the first relay device comprises:

The network device sends the first information to the first relay device by using a broadcast message, a radio resource control RRC signaling, or a downlink control information DCI.
The method according to any one of claims 22 to 24, wherein the first signal is a synchronization signal, a tracking reference signal TRS or a channel state information-reference signal CSI-RS.
A relay device, wherein the relay device is used in a relay system, and the relay device is a first relay device, and the relay device includes:

An acquiring unit, configured to acquire first information, where the first information is used to indicate a transmission resource of the first signal;

And a sending unit, configured to send the first signal according to the first information.
The relay device according to claim 26, wherein the relay system comprises a plurality of levels, and the first information is used to indicate each of the plurality of levels and the first signal Corresponding relationship of the transmission resource, or the first information is used to indicate a transmission resource of the first signal allocated by the first relay device;

The sending unit is specifically configured to:

Transmitting, according to the first information, the first signal on a transmission resource of the first signal corresponding to a level of the first relay device in the relay system, or

And transmitting, according to the first information, the first signal on a transmission resource of the first signal allocated by the first relay device.
The relay device according to claim 26 or 27, wherein the obtaining unit is specifically configured to:

Receiving the first information sent by the second relay device or the network device, where the second relay device is a parent node of the first relay device; or

The first information is pre-stored in the first relay device.
The relay device according to claim 28, wherein the relay device further comprises:

The first determining unit is configured to determine the second relay device.
The relay device according to claim 29, wherein the relay device further comprises:

a second determining unit, configured to determine a level of the second relay device in the relay system;

And a third determining unit, configured to determine a next level of the level in which the second relay device is located as a level of the first relay device in the relay system.
The relay device according to claim 30, wherein the second determining unit is specifically configured to:

Determining, according to the first information and a transmission resource of the first signal sent by the second relay device, a level of the second relay device in the relay system.
The relay device according to claim 30, wherein the first signal is a synchronization signal, and the second determining unit is specifically configured to:

Determining, according to a synchronization sequence of the synchronization sequence with each level in the relay system and a synchronization sequence corresponding to the synchronization signal sent by the second relay device, a level of the second relay device in the relay system .
The relay device according to any one of claims 29 to 32, wherein the first determining unit is specifically configured to:

Receiving at least one of the first signals, the at least one first signal being transmitted by the at least one relay device, and determining the second relay device according to the at least one of the first signals.
The relay device according to claim 33, wherein said at least one first signal comprises K first signals, K is a positive integer greater than or equal to 1, said first determining unit according to said at least one Determining, by the first signal, the second relay device, including:

Measuring the strength of the K first signals;

Determining the second relay device according to the strength of the K first signals.
The relay device according to claim 34, wherein said at least one first signal comprises K first signals, K is a positive integer greater than or equal to 1, said first determining unit according to said at least one Determining, by the first signal, the second relay device, including:

Determining, according to the K first signals, at least one level of the relay device that sends the K first signals one by one;

Determining the second relay device according to the size of the at least one level.
The relay device according to claim 34, wherein said at least one first signal comprises K first signals, K is a positive integer greater than or equal to 1, said first determining unit according to said at least one Determining, by the first signal, the second relay device, including:

Determining, according to the K first signals, at least one level of the relay device that sends the K first signals one by one;

Determining a first level from the at least one level;

If the J first relay devices of the first level send the M first signals of the K first signals, measure the strengths of the J first signals, where M is a positive integer less than or equal to K, J is a positive integer less than or equal to M;

Determining the second relay device according to the strength of the M first signals.
The relay device according to any one of claims 26 to 36, wherein the first signal is a synchronization signal, and the sending unit is specifically configured to:

And transmitting, according to the correspondence between the first information and the synchronization sequence and each level in the relay system, a synchronization sequence corresponding to the layer where the first relay device is located.
The relay device according to any one of claims 26 to 37, wherein the first information is used to indicate a transmission resource of the first signal allocated for the first relay device, The relay device also includes:

a receiving unit, configured to receive second information sent by the second relay device, where the second information is used to indicate the first signal of the at least one level above the level where the first relay device is located The resource is transmitted, and the second relay device is a parent node of the first relay device.
The relay device according to any one of claims 26 to 38, wherein the first information is carried in a broadcast message, radio resource control RRC signaling or downlink control information DCI.
The relay device according to any one of claims 26 to 39, wherein the first signal is a synchronization signal, a tracking reference signal TRS or a channel state information-reference signal CSI-RS.
A relay device for transmitting a signal, wherein the relay device is applied to a relay system, and the relay device is a second relay device, and the relay device includes:

And a sending unit, configured to send, to the first relay device, first information, where the first information is used to indicate a transmission resource of the first signal.
The relay device according to claim 41, wherein the second relay device is a parent node of the first relay device.
The relay device according to claim 41 or 42, wherein the relay system comprises a plurality of levels, and the first information is used to indicate the first level corresponding to each of the plurality of levels a transmission resource of a signal, or the first information is used to indicate a transmission resource of the first signal allocated for the first relay device.
The relay device according to any one of claims 41 to 43, wherein the first information is used to indicate a transmission resource of the first signal allocated for the first relay device, The sending unit is also used to:

Sending, to the first relay device, second information, where the second information is used to indicate a transmission resource of the first signal of at least one level above a level where the first relay device is located.
The relay device according to any one of claims 41 to 44, wherein the transmitting unit is specifically configured to:

The second relay device sends the first information to the first relay device by using a broadcast message, radio resource control RRC signaling, or downlink control information DCI.
The relay device according to any one of claims 41 to 45, wherein the first signal is a synchronization signal, a tracking reference signal TRS or a channel state information-reference signal CSI-RS.
A network device, wherein the network device is applied to a relay system, where the network device includes:

And a sending unit, configured to send the first information to the first relay device, where the first information is used to indicate that the first information is used to indicate a transmission resource of the first signal.
The network device according to claim 47, wherein the relay system comprises a plurality of levels, and the first information is used to indicate the first signal corresponding to each of the plurality of levels Transmitting a resource, or the first information is used to indicate a transmission resource of the first signal allocated for the first relay device.
The network device according to claim 47 or 48, wherein the sending unit is specifically configured to:

The network device sends the first information to the first relay device by using a broadcast message, a radio resource control RRC signaling, or a downlink control information DCI.
The network device according to any one of claims 47 to 49, wherein the first signal is a synchronization signal, a tracking reference signal TRS or a channel state information-reference signal CSI-RS.
A relay device, characterized in that the relay device comprises a processor for storing a computer program, the processor for calling and running a computer program stored in the memory, performing the The method of any one of claims 1 to 15.
A relay device, characterized in that the relay device comprises a processor for storing a computer program, the processor for calling and running a computer program stored in the memory, performing the The method of any one of claims 16 to 21.
A network device, comprising: a processor and a memory, the memory for storing a computer program, the processor for calling and running a computer program stored in the memory, executing the claim The method of any one of 22 to 25.
A computer readable storage medium for storing a computer program, the computer program causing a computer to perform the method of any one of claims 1 to 15.
A computer readable storage medium for storing a computer program, the computer program causing a computer to perform the method of any one of claims 16 to 21.
A computer readable storage medium for storing a computer program, the computer program causing a computer to perform the method of any one of claims 22 to 25.
A chip, comprising: a processor for calling and running a computer program from a memory, such that the device on which the chip is mounted performs the method of any one of claims 1 to 15.
A chip, comprising: a processor for calling and running a computer program from a memory, such that the device on which the chip is mounted performs the method of any one of claims 16-21.
A chip, comprising: a processor for calling and running a computer program from a memory, such that the device on which the chip is mounted performs the method of any one of claims 22 to 25.
A communication system, comprising: a first relay device and a second relay device;

The first relay device is configured to acquire first information, where the first information is used to indicate a transmission resource of the first signal, and send the first signal according to the first information;

The second relay device is configured to send first information to the first relay device, where the first information is used to indicate a transmission resource of the first signal.
A communication system, comprising: a first relay device and a network device;

The first relay device is configured to acquire first information, where the first information is used to indicate a transmission resource of the first signal, and send the first signal according to the first information;

The network device is configured to send first information to the first relay device, where the first information is used to indicate a transmission resource of the first signal.