CN110062406B

CN110062406B - Link measurement method and device

Info

Publication number: CN110062406B
Application number: CN201810055115.9A
Authority: CN
Inventors: 唐小勇; 邱晶; 李铕; 秦熠
Original assignee: Chengdu Huawei Technology Co Ltd
Current assignee: Chengdu Huawei Technology Co Ltd
Priority date: 2018-01-19
Filing date: 2018-01-19
Publication date: 2022-07-12
Anticipated expiration: 2038-01-19
Also published as: CN110062406A

Abstract

The application provides a link measurement method and equipment, relates to the technical field of communication, and is used for realizing link measurement in a relay network. The first node sends corresponding link measurement information to the second node and/or the third node, so that the measurement of the link between the first node and the second node and the measurement of the link between the second node and the third node are conveniently completed. Therefore, the multiplexing mode of the link can be determined according to the information such as the state of the link between the first node and the second node, the information such as the state of the link between the second node and the third node and the like.

Description

Link measurement method and device

Technical Field

The present invention relates to communications technologies, and in particular, to a link measurement method and device.

Background

A Relay (Relay) technology is introduced into a fourth generation (4 th generation; 4G for short) Long Term Evolution (LTE) system, and data between network equipment and a terminal is forwarded by deploying Relay Nodes (RN) in a network, so that the purposes of enhancing network capacity, solving backhaul connection between the network equipment and solving coverage blind areas are achieved. Due to half-duplex constraints of the rf device, the relay node cannot simultaneously receive data when transmitting data, and cannot simultaneously transmit data when receiving data. The collision between signal transmission and reception is called a transceiving collision. In order to avoid the transceiving conflict, in the relay scheme of LTE, the downlink and uplink transmissions of the backhaul link both achieve the purpose of monopolizing resources, and the transceiving conflict with the access link is avoided. The main advantages of this scheme are simple and easy to implement, but as all RNs are required to adopt the same mode (for example, frame structure, TDM time slot) to perform data transmission with network equipment, the problem of differentiation of bearer services between RNs cannot be solved well, for example, some RNs need more uplink resources due to uplink load; some RN downlink heavy loads require more downlink resources.

In the new generation (NR) system, relay technology is still supported. Compared with the less flexible relay technology in LTE, NR introduces the concept of Access and Backhaul Integration (IAB). IAB needs to be more flexible to support resource sharing of the access link and the backhaul link. Therefore, it is desirable to provide a link measurement method for performing link measurement. Thereby flexible resource sharing may be supported.

Disclosure of Invention

In view of the above, it is actually necessary to provide a link measurement method and apparatus to implement link measurement.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, a link measurement method is provided, where the method is applied to a wireless communication system including a first node, a second node, and a third node, and the method includes: a first node receives a link measurement request sent by a second node; and the first node transmitting link measurement information of at least one node to at least one of the second node and the third node.

Optionally, the link measurement information of the at least one node includes at least one of the following information: configuration information of a pilot or synchronization signal.

Optionally, the first node sends a request for reporting pilot resource information or synchronous resource information to the third node.

Optionally, the first node receives pilot resource information or synchronization signal resource information of the third node sent by the third node; and the first node determines the link measurement information of the at least one node according to the pilot frequency resource information or the synchronous signal resource information of the third node.

Optionally, the first node triggers the third node to report the pilot frequency resource information or the synchronization signal resource information of the third node; or, the reporting is triggered by the third node periodically or based on an event.

Optionally, the link measurement information of the at least one node includes at least one of the following link measurement information: a first type of link measurement information and a second type of link measurement information; the first type of link measurement information is measurement information of a link between the first node and at least one of the second node and the third node, and the second type of link measurement information is measurement information of a link between the second node and the third node.

Optionally, the first type of link measurement information and the second type of link measurement information are sent through different information elements or messages.

Optionally, the type of the link measurement information of the at least one node is determined according to indication information, where the indication information is used to indicate the type of the link measurement information of the at least one node, and the type of the link measurement information of the at least one node includes a first type of link measurement information and a second type of link measurement information.

Optionally, the indication information includes at least one of the following information: an indication of a type of the link measurement information; power information corresponding to a type of the link measurement information; an index of a pilot or synchronization signal corresponding to a type of the link measurement information; and information of time domain resources, the information of time domain resources corresponding to the type of the link measurement information.

In a second aspect, a link measurement method is provided, where the method is applied to a wireless communication system including a first node, a second node, and a third node, and the method includes: the second node sends a link measurement request to the first node; the second node receives the link measurement information of the second node sent by the first node; and the second node measures the link according to the link measurement information.

Optionally, the link measurement information of the second node is determined by the first node according to pilot resource information or synchronization signal resource information of a third node.

Optionally, the link measurement information of the second node includes at least one of the following configuration information: link measurement information of a first type of the second node and link measurement information of a second type of the second node; the first type of link measurement information of the second node is measurement information of a link between the first node and the second node, and the second type of link measurement information of the second node is measurement information of a link between the second node and the third node.

Optionally, the first type of link measurement information of the second node and the second type of link measurement information of the second node are sent through different information elements or messages.

Optionally, the type of the link measurement information of the second node is determined according to indication information, where the indication information is used to indicate the type of the link measurement information of the second node, and the type of the link measurement information of the second node includes the first type of link measurement information of the second node and the second type of link measurement information of the second node.

Optionally, the indication information may refer to the first aspect, and is not repeated here.

In a third aspect, a link measurement method is provided, including: a third node receives link measurement information of the third node sent by a first node; and the third node carries out link measurement according to the link measurement information of the third node.

Optionally, the third node sends pilot resource information or synchronization signal resource information of the third node to the first node; the link measurement information of the third node is the link measurement information of the third node determined by the first node according to the pilot frequency resource information or the synchronous signal resource information of the third node.

Optionally, the third node receives a pilot resource information or synchronization signal resource information reporting request sent by the first node, and sends the pilot resource information or synchronization signal resource information of the third node to the first node; or the third node sends the pilot frequency resource information or the synchronous signal resource information of the third node to the first node periodically or based on event trigger.

Optionally, the link measurement information of the third node includes at least one of the following configuration information: link measurement information of a first type of the third node and link measurement information of a second type of the third node; the first type of link measurement information of the third node is measurement information of a link between the first node and the third node, and the second type of link measurement information of the third node is measurement information of a link between the second node and the third node.

Optionally, the first type of link measurement information of the third node and the second type of link measurement information of the third node are sent by different information elements or messages.

Optionally, the type of the link measurement information of the third node is determined according to indication information, where the indication information is used to indicate the type of the link measurement information of the third node, and the type of the link measurement information of the third node includes the first type of link measurement information of the third node and the second type of link measurement information of the third node.

In a fourth aspect, a first node is provided, comprising: a receiving unit, configured to receive a link measurement request sent by a second node; and a transmitting unit configured to transmit link measurement information of at least one node to at least one node of the second node and the third node.

Optionally, the receiving unit is configured to receive pilot resource information or synchronization signal resource information of the third node sent by the third node; wherein the first node further comprises a processing unit configured to determine the at least one node link measurement information according to the pilot resource information or the synchronization signal resource information of the third node.

Optionally, the link measurement information of the at least one node may refer to the first aspect, and is not repeated here.

In a fifth aspect, a second node is provided, including: a transmitting unit configured to transmit a link measurement request to a first node; a receiving unit, configured to receive link measurement information of the second node sent by the first node; and the processing unit is used for measuring the link according to the link measurement information of the second node.

Optionally, the link measurement information of the second node may refer to the second aspect, and will not be repeated here.

In a sixth aspect, a third node is provided, comprising: a receiving unit, configured to receive link measurement information of the third node sent by a first node; and the processing unit is used for measuring the link according to the link measurement information of the third node.

Optionally, the third node further includes a sending unit, where the sending unit is configured to send pilot resource information or synchronization signal resource information of the third node to the first node; the link measurement information of the third node is the link measurement information of the third node determined by the first node according to the pilot frequency resource information or the synchronous signal resource information of the third node.

Optionally, link measurement information of the third node is referred to in the third aspect, and is not repeated here.

In a seventh aspect, an embodiment of the present invention provides an apparatus, which includes a processor, a memory coupled to the processor, and a processor executing code in the memory to cause the apparatus to perform the measurement method according to any one of the first, second, or third aspects.

In an eighth aspect, an embodiment of the present invention provides a readable storage medium, where instructions are stored in the readable storage medium, and when the instructions stored in the readable storage medium are executed on a device, the device is caused to execute the measurement method according to any one of the first aspect, the second aspect, or the third aspect.

In a ninth aspect, an embodiment of the present invention provides a computer program product, which when run on a computer causes the computer to execute a method for performing the measurement according to any one of the first, second or third aspects.

In the embodiment of the invention, the first node sends the corresponding link measurement information to the second node and/or the third node, so that the measurement of the link between the first node and the second node and the measurement of the link between the second node and the third node are conveniently completed. Therefore, the multiplexing mode of the link, such as multiple modes of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), Space Division Multiplexing (SDM) and the like, can be determined according to the information of the state of the link between the first node and the second node, the information of the state of the link between the second node and the third node, and the like, so as to realize flexible sharing of resources.

Drawings

FIG. 1 is a diagram of a communication system in which embodiments of the present invention are applicable;

fig. 2 is a schematic structural diagram of a network device/relay device according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 4 is a schematic flow chart of a link measurement method according to an embodiment of the present invention;

fig. 5 is a schematic diagram illustrating a method for measuring link measurement information using a virtual ID of a relay node according to an embodiment;

fig. 6 is a schematic structural diagram of a first node according to an embodiment of the present invention;

fig. 7 is another schematic structural diagram of a first node according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a second node according to an embodiment of the present invention;

fig. 9 is another schematic structural diagram of a second node according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a third node according to an embodiment of the present invention;

fig. 11 is another schematic structural diagram of a third node according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

The terms "first," "second," and the like in the description and in the claims, and in the drawings described above, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprise," "include," and "have," and any variations thereof, are intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or modules is not necessarily limited to those steps or modules expressly listed, but may include other steps or modules not expressly listed or inherent to such process, method, article, or apparatus, the division of modules herein shown is merely a logical division and may be implemented in a practical application in a different manner, such that multiple modules may be combined or integrated into another system or certain features may be omitted or not implemented, and such that mutual or direct coupling or communicative coupling between the modules shown or discussed may be through interfaces, and indirect coupling or communicative coupling between the modules may be electrical or other similar, are not intended to be limiting herein. Moreover, the modules or sub-modules described as separate components may or may not be physically separated, may or may not be physical modules, or may be distributed in a plurality of circuit modules, and some or all of the modules may be selected according to actual needs to implement the purpose of the embodiment of the present invention.

Fig. 1 shows a wireless communication system to which the present application relates. The wireless communication system may be a Long Term Evolution (LTE) system, or a future-Evolution fifth-Generation mobile communication (5G) system, a new air interface (NR) system, a Machine-to-Machine communication (M2M) system, or the like. As shown in fig. 1, the wireless communication system 100 may include: a network device 101, a terminal 105, and a relay device 103. The wireless communication system 100 includes a single-hop relay system or a multi-hop relay system. In a multihop relay system, as shown in fig. 1, there are at least two relay devices 103 between a network device 101 and a terminal 105. Whereas in a single-hop relay system there is only one relay device 103 between the network device 101 and the terminal 105.

The network device may be configured to communicate with one or more terminals and may also be configured to communicate with one or more network devices having some terminal functionality (e.g., communication between a macro base station and a micro base station, such as an access point). The network device may be a Base Transceiver Station (BTS) in a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, an evolved Node B (eNB) in an LTE system, and a Base Station gNB in a 5G system or a new air interface (NR) system. In addition, the network device may also be an Access Point (AP), a transmission node (Trans TRP), a Central Unit (CU), or other network entities, and may include some or all of the functions of the above network entities.

A Terminal (Terminal) according to embodiments of the present invention may refer to a device that provides voice and/or data connectivity to a user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem. The terminal may communicate with one or more core networks via a Radio Access Network (RAN). The terminal 105 may be stationary or mobile. For example, the terminal 105 may be a mobile device, a mobile station (mobile station), a mobile unit (mobile unit), an M2M terminal, a wireless unit, a remote unit, a user agent, a mobile client, a handheld device, a smart watch, a laptop, a tablet, or a smart bracelet, among others.

The relay device may be a relay base station, such as a micro base station or the like. The relay device may also be a terminal providing a relay function. The relay device may also be a network entity such as a relay transceiver node, a user terminal device (CPE), a relay transceiver, a relay agent, a Transmission and Reception Point (TRP), or a relay transmission and Reception Point (trpp). In specific implementation, the relay devices may be distributed at the edge of a cell, and the coverage area of the network device may be expanded.

In the wireless communication system 100, an access link (access link) refers to a wireless link between a relay apparatus and a terminal. The access link comprises an Uplink (UL) and/or a Downlink (DL) access link. Backhaul link (BH) refers to a wireless link between a network device and a relay device, or a link between a relay device and a relay device. The backhaul links include uplink and/or downlink backhaul links.

In the wireless communication system 100, the relay device 103 between the network device 101 and the terminal 105 may be used to forward wireless signals between the network device 101 and the terminal 105. Specifically, in the downlink transmission, the relay device 103 is responsible for forwarding the wireless signal transmitted by the network device 101, and finally transmitting the wireless signal to the terminal 105. If the uplink transmission is included, the relay device 103 is responsible for forwarding the wireless signal transmitted by the terminal 105, and finally transmitting the wireless signal to the network device 101.

It should be noted that the wireless communication system 100 shown in fig. 1 is only for more clearly illustrating the technical solution of the present application, and does not constitute a limitation to the present application, and as a person having ordinary skill in the art knows, the technical solution provided in the present application is also applicable to similar technical problems as the network architecture evolves and new service scenarios emerge.

As shown in fig. 2, a schematic structural diagram of a network device provided in this embodiment of the present application is shown, where the network device may include a Baseband processing Unit (BBU) 201 and a Remote Radio Unit (RRU) 202, the RRU 202 is connected to an antenna feed system 203, and the BBU 201 and the RRU 202 may be detached for use as needed. For example, the RRU may be remote and located in a cloud platform. The configuration shown in fig. 2 may be a configuration of a network device or a configuration of a relay device. The BBU 201 is configured to implement operation and maintenance of the entire network device or the relay device, implement signaling processing, radio resource management, and a transmission interface to a packet core network, implement a physical layer, a media access control layer, an L3 signaling, and an operation and maintenance master control function. The RRU 202 is configured to implement conversion between a baseband signal and a radio frequency signal, implement demodulation of a wireless received signal, modulation and power amplification of a transmitted signal, and the like. The antenna feed system 203 may include multiple antennas for receiving and transmitting wireless air interface signals. It will be understood by those skilled in the art that the network device may also adopt other general hardware structures in the specific implementation process, and is not limited to the hardware structure shown in fig. 2. The functions related to the embodiments of the present invention in the network device may also be implemented by a cloud access network (cloudlan) device, and the cloudlan may adopt a distributed networking mode or a centralized networking mode, or a combination of the two networking modes.

As shown in fig. 3, a schematic structural diagram of a terminal provided in this embodiment is shown, where the terminal is a mobile phone, and the mobile phone may include: RF (radio frequency) circuitry 310, memory 320, other input devices 330, display screen 340, sensors 350, audio circuitry 360, I/O subsystem 370, processor 380, and power supply 390. The following describes each component of the mobile phone in detail with reference to fig. 3:

the processor 380 is coupled to the RF circuit 310, the memory 320, the audio circuit 360, and the power supply 390. The I/O subsystem 370 is coupled to the other input devices 330, the display screen 340, and the sensor 350, respectively. RF circuit 310 may be used for transceiving voice or data information, and in particular, may receive downlink information from a network device and process the received downlink information to processor 380. Memory 320 may be used to store software programs and modules. The processor 380 executes various functional applications and data processing of the cellular phone by executing software programs and modules stored in the memory 320. Other input devices 330 may be used to receive entered numeric or character information and generate key signal inputs relating to user settings and function controls of the handset. The display 340 may be used to display information input by or provided to the user and various menus of the cellular phone and may also accept user input, and the display 340 may include a display panel 341 and a touch panel 342. The sensor 350 may be a light sensor, a motion sensor, or other sensor. The audio circuitry 360 may provide an audio interface between the user and the handset. The I/O subsystem 370 is used to control input and output peripherals, which may include other device input controllers, sensor controllers, display controllers. The processor 380 is a control center of the mobile phone, connects various parts of the whole mobile phone by using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 320 and calling data stored in the memory 320, thereby performing overall monitoring of the mobile phone. A power supply 390 (e.g., a battery) is used to supply power to the above components, and preferably, the power supply may be logically connected to the processor 380 through a power management system, so as to manage charging, discharging, and power consumption functions through the power management system.

Although not shown, the mobile phone may further include a camera, a bluetooth module, and other functional modules or devices, which are not described herein again. Those skilled in the art will appreciate that the handset configuration shown in fig. 3 is not intended to be limiting and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.

The relay device may be a relay base station, such as a micro base station, or a terminal providing a relay function. The structure of the relay device may refer to a schematic structural diagram of a network device or a terminal.

For convenience of explanation, the words appearing in this application are explained.

The first node is a previous hop device, a superior node or an upstream node of the second node on a link from the network device to the terminal. The second node is a next hop device, a subordinate node or a downstream node of the first node on a link from the network device to the terminal. The second node is a previous hop device, a superior node or an upstream node of a third node on a link from the network device to the terminal, or is a peer node of the third node. Or the third node is a next-hop device, a subordinate node or a downstream node of the second node on a link from the network device to the terminal, or is a peer node of the second node. The first node may be a network device or a relay device, the second node may be a relay device or a terminal, and the third node may be a relay device or a terminal. For example, if the first node is a network device or a relay device, the second node is a next hop relay device of the first node, and the third node is a same-stage relay device of the second node, or the third node is a next hop relay device of the second node or a terminal accessed to the second node. It should be further noted that the peer nodes described herein may be two nodes without direct communication, or two independent nodes linked to a higher node at the same time, or linked to the same lower node, etc. For example, if the first node is the network device 101, the second node may be the first relay device 103, and the third node may also be the second relay device 103 (the second relay device 103 may be a next node or a peer node of the first relay device 103) or the terminal 105. Or, if the first node is the first relay device 103, the third node may also be the second relay device 103 (the second relay device 103 may be a next node or a peer node of the first relay device 103); the third node is a third relay apparatus 103 (the third relay apparatus 103 may be a next node or a peer node of the second relay apparatus 103) or a terminal 105.

The embodiment of the invention is applied to a wireless communication system which comprises a first node, a second node and a third node. The first node is a previous-level node of the second node and the third node, and the second node may be a previous-level node of the third node, or the second node and the third node are the same-level node.

In the embodiment of the invention, when the link measurement is needed, the second node sends a link measurement request to the first node, and the first node sends link measurement information to at least one of the second node and the third node. And at least one of the second node and the third node which receives the link measurement information measures the link according to the link measurement information. For example, the measurement of the link is performed by using the acquired pilot/synchronization signal configuration information.

The link measurement information may include configuration information of the pilot and/or synchronization signals, among others. For example, the pilot may include at least one of the following: the pilot frequency used for link information measurement may be, for example, a link state information reference signal (CSI-RS), or a Sounding Reference Symbol (SRS), a pilot frequency used for uplink and downlink data demodulation, for example, a demodulation reference signal (DMRS), or a phase-tracking reference signal (PTRS), or a pilot frequency used for positioning. Different pilots may be applied in different scenarios.

The link measurement information in the embodiment of the present invention may include at least one of the following link measurement information:

(1) first type of link measurement information: measurement information of a link between the first node and at least one of the other two nodes (second node and third node). Such as measurement information of a link between a first node and a second node, or measurement information of a link between a first node and a third node.

The first type of link measurement information may be understood as measurement information of a link between a certain node and a previous node.

(2) The second type of link measurement information: measurement information of a link between the second node and the third node.

The second type of link measurement information may be understood as measurement information of a link between a certain node and a peer node or a next node.

The type of the link measurement information comprises a first type of link measurement information and/or a second type of link measurement information.

The link measurement information sent by the first node to the second node may be referred to as link measurement information of the second node, where the link measurement information of the second node includes: measurement information of a link between the first node and the second node (link measurement information of a first type of the second node), and/or measurement information of a link between the second node and a third node (link measurement information of a second type of the second node). The link measurement information sent by the first node to the third node may be referred to as link measurement information of the third node, where the link measurement information of the third node includes: measurement information of a link between the first node and the third node (link measurement information of a first type of the third node), and/or measurement information of a link between the second node and the third node (link measurement information of a second type of the third node).

Determining the type of link measurement information by:

determining the type of the link measurement information according to the cell or message transmitting the link measurement information or the type of the cell or message transmitting the link measurement information

That is, the first type of link measurement information and the second type of link measurement information are transmitted through different information elements or messages. For example, the first type of link measurement information is configured using a first resource setting (resource setting), and the second type of link measurement information is configured using a second resource setting (resource setting) different from the first resource setting. The first resource setting and the second resource setting may be indicated by a high-level signaling, such as a Radio Resource Control (RRC) signaling, a media access control layer control element (MAC-CE), or two independent cells (IE) in Downlink Control Information (DCI). Or the first resource configuration and the second resource configuration are indicated by different messages.

And the second node or the third node determines the type of the received link measurement information according to the configuration of the received link measurement information.

And (II) determining the type of the link measurement information according to the indication information. The indication information is used to indicate a type of the link measurement information.

The indication information includes at least one of the following information:

(1) an indication of a type of link measurement information.

The indication information of the type of the link measurement information may be included in the link measurement information. For example, the type of the link measurement information is 1 bit, 0 represents the first type of link measurement information, and 1 represents the second type of link measurement information. Or the indication information is an enumeration type, for example, when the enumeration type is a value #1, the indication information represents a first type of link measurement information, and when the enumeration type is a value #2, the indication information represents a second type of link measurement information. The indication information of the type of the link measurement information may be transmitted to the second node and/or the third node by the first node through higher layer signaling, such as RRC signaling, MAC-CE, or through DCI.

Alternatively, the first node first notifies the link measurement information, for example, the link measurement information is notified through higher layer signaling, for example, RRC signaling, MAC-CE, or DCI, and then the first node dynamically notifies the second node and/or the third node of the indication information of the type of the link measurement information. The method can realize dynamic allocation and sharing of the ports. For example, the first node notifies, through Downlink Control Information (DCI), indication information of the type of the link measurement information and a corresponding pilot/synchronization signal resource identifier, such as a link state information reference signal (CSI-RS) resource identifier (CRI). Or, the first node sends the indication information of the type of the link measurement information through a Media Access Control (MAC) -link element (CE), and sends the corresponding pilot/synchronization signal resource identifier through DCI.

The link measurement information may include at least one of: measuring the starting time position of the resource, measuring the ending time position of the resource, measuring the duration of the resource, setting the resource (resource setting), reporting the setting (reporting setting) and measuring the setting (measurement setting). Wherein a resource setting may comprise a set of resource settings, each set of resource settings (resource sets) in the set of resource configurations. The set of resource settings includes a plurality of resources. Each resource includes: port number, time-frequency resource information occupied by pilot frequency/synchronous signal, or information of pilot frequency/synchronous signal sending period. The indication information of the type of the link measurement information may be located in resource setting (resource setting), reporting setting (reporting setting), or measurement setting (measurement setting). The indication information of the type of the link measurement information may also be located in a resource setting (resource setting), and the indication information of the type of the link measurement information may be located in a resource setting set (resource set) or a resource (resource) in the resource setting set. Or,

the link measurement information may also include at least one of: a starting position of a Synchronization Signal Block (SSB), an ending position of the SSB, a duration of the SSB, a receiving/transmitting period of the SSB, position information occupied by the SSB (including a symbol number occupied in a time domain, a frequency domain resource position, and the like), a subcarrier interval used by the SSB, transmission power used by the SSB, and other configuration information. The indication information of the type of the link measurement information may be located in a broadcast message, a system message, a resource setting (resource setting), a reporting setting (reporting setting), or a measurement setting (measurement setting).

(2) Power information corresponding to at least one type of link measurement information.

If the link measurement information does not contain the power information of the pilot frequency/synchronous signal, or the power information of the pilot frequency/synchronous signal corresponding to the link measurement information is an invalid value; the link measurement information is a first type of link measurement information. If the link measurement information contains the power information of the pilot frequency/synchronous signal, or the power information of the pilot frequency/synchronous signal corresponding to the link measurement information is an effective value; the link measurement information is a second type of link measurement information. In this case, if the power information of the pilot/synchronization signal corresponding to the link measurement information to be sent by the first node or the power information of the pilot/synchronization signal corresponding to the link measurement information configured by the first node is an invalid value, the second node or the third node determines that the link measurement information is the first type of link measurement information. And if the power information of the pilot frequency/synchronous signal corresponding to the link measurement information to be sent by the first node or the power information of the pilot frequency/synchronous signal corresponding to the link measurement information configured by the first node is an effective value, the second node or the third node determines that the link measurement information is the second type of link measurement information.

Or the sets of power information of the pilot/synchronization signals corresponding to the first type of link measurement information and the second type of link measurement information are different. And the second node or the third node determines that the link measurement information is the first type or the second type according to the set of the power information of the pilot frequency/synchronous signal corresponding to the received link measurement information. The corresponding relationship between the type of the link measurement information and the power information set of the pilot/synchronization signal may be configured in advance, or may be determined by the first node, and the corresponding relationship between the type of the link measurement information and the power information set of the pilot/synchronization signal is notified to the second node and/or the third node.

(3) An index of a pilot or synchronization signal corresponding to a type of the link measurement information.

The index sets of the pilot/synchronization signals corresponding to the first type of link measurement information and the second type of link measurement information are different. And the second node or the third node determines that the link measurement information is the first type or the second type of link measurement information according to the index set of the pilot frequency/synchronization signal corresponding to the received link measurement information. The corresponding relationship between the type of the link measurement information and the index set of the pilot frequency/synchronization signal can be configured in advance, or can be determined by the first node, and the corresponding relationship between the type of the link measurement information and the power information set of the pilot frequency/synchronization signal is informed to the second node and/or the third node.

Or, the index of the pilot/synchronization signal includes a first part and a second part, wherein the first part is used for indicating the type of the link measurement information, and the second part is used for indicating the index of the pilot/synchronization signal in the link measurement information type corresponding to the link measurement information. For example, the index of the pilot/synchronization signal includes 4 bits, where the first bit is used to indicate whether the type of the link measurement information is type one or type two, and the remaining 3 bits are used to indicate the index of the pilot/synchronization signal under type one or two.

(4) Information of time domain resources corresponding to a type of the link measurement information.

The information of the time domain resource corresponding to the first type of link measurement information and the second type of link measurement information are different. And the second node or the third node determines that the link measurement information is the first type or the second type of link measurement information according to the information of the time domain resource corresponding to the link measurement information. If the information of the time domain resource corresponding to the link measurement information is: and the received link measurement information is the first type of link measurement information. If the information of the time domain resource corresponding to the link measurement information is: and the received link measurement information is the second type of link measurement information.

The following describes embodiments of the present invention in detail with reference to the accompanying drawings.

Fig. 4 is a flowchart illustrating a link measurement method according to an embodiment of the present invention. Referring to fig. 4, the method is applied to the communication system shown in fig. 1, and the method includes:

step S401, the third node sends the pilot frequency resource information or the synchronous signal resource information of the third node to the first node; the first node receives pilot frequency resource information or synchronous signal resource information of the third node sent by the third node.

Optionally, the first node determines the link measurement information of the second node and/or the third node according to the pilot resource information or the synchronization signal resource information of the third node.

The pilot resource information or the synchronization signal resource information of the third node may be reported by the third node triggered by the first node, for example, the first node sends a request message to the third node to request the third node to report the pilot resource information or the synchronization signal resource information of the third node. Or the third node reports the pilot frequency resource information or the synchronous signal resource information of the third node periodically or based on event triggering. For example, when the pilot resource information of the third node or the resource information of the synchronization signal (for example, the period or the number of ports) changes, the third node reports the pilot resource information or the synchronization signal resource information of the third node.

The pilot resource information or the synchronization signal resource information reported by the third node may include all the pilot resource information or the synchronization signal resource information of the third node, or may include only the sub-information, such as the activation or deactivation state of the port. The third node may also report only the changed part, which may be referred to as differential reporting, for example, compared with the previous reporting, the content reported this time is the part that has changed compared with the content reported last time.

Step S401 is optional and may not be performed.

Step S402, the second node sends a link measurement request to the first node; the first node receives the link measurement request sent by the second node.

The second node may send a link measurement request to the first node while being interfered with. The link measurement request may be sent to the first node via resources such as PUCCH, PUSCH, RACH, etc. This step is not necessary or may not be included, for example, after the first node directly configures the link measurement information, the link measurement information is notified to the second node and the third node.

Step S402 is optional and may not be performed. For example, when the initial configuration is performed or the link measurement resource needs to be adjusted, the first node may directly send the link measurement information to the second node and/or the third node, and then step S402 is not performed.

S403, the first node sends the link measurement information of the second node to the second node.

The link measurement information of the second node includes: link measurement information of a first type of the second node and/or link measurement information of a second type of the second node. For a description of the link measurement, reference is made to the previous description and will not be repeated here.

S404, the second node measures the link according to the link measurement information of the second node.

The second node determines the type of the link measurement information of the second node, and performs link measurement according to the determined type of the link measurement information of the second node. The method specifically comprises the following steps:

if the second node determines that the link measurement information of the second node includes the first type of link measurement information of the second node, the second node transmits a pilot or synchronization signal to the first node or receives the pilot or synchronization signal from the first node according to the first type of link measurement information of the second node, and performs link measurement between the second node and the first node. Or,

and if the second node determines that the link measurement information of the second node comprises the second type of link measurement information of the second node, the second node sends a pilot frequency or synchronous signal to the third node or receives the pilot frequency or synchronous signal from the third node according to the second type of link measurement information of the second node, and performs link measurement between the second node and the third node. Or,

if the second node determines that the link measurement information of the second node comprises the first type of link measurement information of the second node and the second type of link measurement information of the second node, the second node sends a pilot frequency or a synchronous signal to the first node or receives the pilot frequency or the synchronous signal from the first node according to the first type of link measurement information of the second node to perform link measurement between the second node and the first node, and the second node sends the pilot frequency or the synchronous signal to the third node or receives the pilot frequency or the synchronous signal from the third node according to the second type of link measurement information of the second node to perform link measurement between the second node and the third node.

Wherein the determining, by the second node, the type of the link measurement information of the second node comprises: the second node determines the type of the link measurement information of the second node according to the type of the information or the information of the transmitted link measurement information or the indication information. The detailed method is described in the previous description and will not be repeated here.

S405, the first node sends link measurement information of the third node to the third node.

The link measurement information of the third node includes: link measurement information of a first type of the third node and/or link measurement information of a second type of the third node. For the related description of the link measurement, refer to the previous description, and will not be repeated here.

S406, the third node measures the link according to the link measurement information of the third node.

The third node receives the link measurement information of the third node, determines the type of the link measurement information of the third node, and performs link measurement according to the determined type of the link measurement information of the third node. The method specifically comprises the following steps:

if the third node determines that the link measurement information of the third node includes the first type of link measurement information of the third node, the third node sends a pilot frequency or a synchronous signal to the first node or receives the pilot frequency or the synchronous signal from the first node according to the first type of link measurement information of the third node, and performs link measurement between the third node and the first node. Or,

if the third node determines that the link measurement information of the third node includes the second type of link measurement information of the third node, the third node sends a pilot frequency or a synchronous signal to the second node or receives the pilot frequency or the synchronous signal from the second node according to the second type of link measurement information of the third node, and performs link measurement between the second node and the third node. Or,

if the third node determines that the link measurement information of the third node includes the first type of link measurement information of the third node and the second type of link measurement information of the third node, the third node sends a pilot frequency or a synchronous signal to the first node or receives the pilot frequency or the synchronous signal from the first node according to the first type of link measurement information of the third node to perform link measurement between the third node and the first node, and the third node sends the pilot frequency or the synchronous signal to the second node or receives the pilot frequency or the synchronous signal from the second node according to the second type of link measurement information of the third node to perform link measurement between the second node and the third node.

Wherein the determining, by the third node, the type of the link measurement information of the third node includes: the third node determines the type of the link measurement information of the third node according to the cell or the type of the message for sending the link measurement information or the indication information. The specific method is described in the foregoing description and will not be repeated here.

Here, steps S403 and S404, and steps S405 and S406 may be executed, or only steps S403 and S404, or steps S405 and S406 may be executed.

In the embodiment of the invention, the first node sends the corresponding link measurement information to the second node and/or the third node, so that the measurement of the link between the first node and the second node and/or the measurement of the link between the second node and the third node can be completed. Therefore, the multiplexing mode of the link, such as multiple modes of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), Space Division Multiplexing (SDM) and the like, can be determined according to the information of the state of the link between the first node and the second node, the information of the state of the link between the second node and the third node, and the like, so as to realize flexible sharing of resources.

When the communication network in the embodiment of the invention is a multi-hop network, the link measurement information (including the configuration information of the pilot frequency resource information or the synchronization signal resource information) of one node can be forwarded hop by hop until the corresponding node is reached. It is also possible to pack the link measurement information of all nodes together and take out the link measurement information corresponding to each node. In the process of forwarding the link measurement information, if the physical ID of the relay node (which may be a cell ID for uniquely identifying the node) is used, there is a large signaling overhead. The embodiment of the invention provides a method for mapping a virtual ID and a physical ID of a relay node, which is used for reducing signaling overhead. And the virtual ID of the relay node is used for indicating the index of the configuration information of the pilot frequency resource information or the synchronization signal resource information of the relay node. There is a mapping relationship between the virtual ID of the relay node and the physical ID of the relay node. For example, if the physical ID information of 4 child nodes is (3, 19,200,2000), the corresponding virtual ID information is (0,1,2, 3).

The mapping relationship between the virtual ID of the relay node and the physical ID of the relay node may include: implicit mapping relationships and explicit mapping relationships.

The implicit mapping relationship between the virtual ID of the relay node and the physical ID of the relay node may be preset, for example, specified in a protocol, and does not need to be notified through signaling. For example, the implicit mapping relationship between the virtual ID of the relay node and the physical ID of the relay node may be: the physical IDs of all the relay nodes have a corresponding relation with the virtual ID information of the corresponding relay nodes according to the sequence from small to large. For example, if the physical ID information of 4 child nodes is (3, 19,200,2000), the virtual ID information of the corresponding child node is (0,1,2, 3). For example, the virtual ID 0 corresponds to the physical ID 3, and the configuration information carrying the pilot resource information or the synchronization signal resource information with the virtual ID 0 is the configuration information of the relay node with the physical ID 3. And the IDs of other relay nodes, and so on.

The explicit mapping relationship between the virtual ID of the relay node and the physical ID of the relay node may be more flexible, for example, the physical ID of one relay node may correspond to the virtual ID of one or more relay nodes. The network device or the upper node may notify the lower node of an explicit mapping relationship of the virtual ID of the relay node and the physical ID of the relay node.

The embodiment of the invention provides a method for measuring link measurement information by adopting a virtual ID of a relay node, which comprises the following steps:

the superior relay node sends link measurement information to the inferior relay node, wherein the link measurement information comprises a virtual ID of the relay node;

and the subordinate relay node receives the link measurement information sent by the superior node, and determines the link measurement information of the subordinate node from the received link measurement information according to the mapping relation between the virtual ID of the relay node and the physical ID of the relay node.

The lower node may be an implicit mapping relationship or a display mapping relationship according to a mapping relationship between the virtual ID of the relay node and the physical ID of the relay node. Reference may be made in particular to the preceding description.

For example, fig. 5 is a schematic diagram illustrating a method for measuring link measurement information using a virtual ID of a relay node according to an embodiment, where the communication system includes a network device and a two-hop relay node as an example. The network device takes the gNB as an example, and the relay node takes the rrtp as an example, where the rrtp #1 is a previous node of the rrtp # 2. The previous level node may learn the IDs of all the next level nodes accessing the previous level node, including the physical IDs of the nodes. The mapping of the physical ID of the node and the virtual ID of the node may be implicit or explicit. The gNB sends the rTRP #1 link measurement information including the virtual ID of the rTRP #1 and the virtual ID of the rTRP #2, the rTRP #1 acquires the link measurement information of the rTRP #1 from the link measurement information sent by the gNB according to the mapping relation between the virtual ID of the rTRP #1 and the physical ID of the virtual ID, and sends the virtual ID link measurement information including the rTRP #2 to the rTRP # 2. The rTRP #1 acquires the link measurement information of the rTRP #2 from the link measurement information transmitted by the rTRP #1 according to the virtual ID of the rTRP #2 and the mapping relation between the virtual ID and the physical ID.

The embodiment related to the virtual ID may also be applied to the embodiment corresponding to fig. 4, that is, the ID included in the link measurement information in the embodiment corresponding to fig. 4 may be the virtual ID.

The above-mentioned scheme provided by the embodiment of the present application is introduced mainly from the perspective of interaction between network elements. It is to be understood that each network element, for example, the first device and the second device, for implementing the above functions, includes corresponding hardware structures and/or software modules for performing each function. Those of skill in the art will readily appreciate that the various illustrative network elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the first device and the second device may be divided into function modules according to the above method example, for example, each function module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

In the case of dividing each functional module by corresponding functions, fig. 6 shows a possible structural diagram of the first node involved in the above embodiment, where the first node includes: a transmitting unit 601 and a receiving unit 603. The sending unit 601 is configured to support the first node to perform the step of sending information by the first node device in the embodiment. The receiving unit 603 is configured to support the first node to perform the step of receiving information by the first node device in the embodiment. Optionally, the first device further includes: a processing unit 602, configured to support the first node to perform the steps of the information determined by the first node in the first embodiment, and other functions besides the functions of the sending unit and the receiving unit, and the like.

In terms of hardware implementation, the processing unit 602 may be a processor or a processing circuit; the transmitting unit 601 may be a transmitter or a transmitting circuit, etc., the receiving unit 603 may be a receiver or a receiving circuit, etc., and the transmitting unit 601 and the receiving unit 603 may constitute a communication interface.

Fig. 7 is a schematic diagram of a possible logical structure of the first node involved in the foregoing embodiments, which is provided for an embodiment of the present application. The first node includes: a processor 702. In an embodiment of the present application, the processor 702 is configured to control and manage an action of the first node, for example, the processor 702 is configured to support, in an embodiment, a relevant step of determining link measurement information by the first node, and the like. Optionally, the first node may further include a memory 701, a communication interface 703, and the processor 702, the communication interface 703 and the memory 701 may be connected to each other or connected to each other through a bus 704. The memory 701 is used for storing codes and data of the first node. The communication interface 703 is used to support the first node for communication.

The processor 702 may be, among other things, a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, transistor logic, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a digital signal processor and a microprocessor, or the like.

In the case of dividing each functional module by corresponding functions, fig. 8 shows a possible structural schematic diagram of the second node in the above embodiment, where the second node includes: a transmitting unit 801, a receiving unit 803 and a processing unit 802. The sending unit 801 is configured to support the step of sending by the second node in the method embodiment; the receiving unit 803 is configured to support the step of receiving by the second node in the method embodiment; a processing unit 802 for supporting the steps of the link measurement of the second node in the method embodiment.

In terms of hardware implementation, the transmitting unit 801 may be a transmitter, a transmitting circuit, or the like, the receiving unit 803 may be a receiver, a receiving circuit, or the like, and the transmitting unit 801 and the receiving unit 803 may constitute a communication interface. The processing unit 802 may be a processor or a processing circuit.

Fig. 9 is a schematic diagram of a possible logical structure of the second node according to the foregoing embodiments, provided for an embodiment of the present application. The second node includes: a processor 902. In an embodiment of the present application, the processor 902 is configured to control and manage an action of the second node in the embodiment. Optionally, the second node may further include a memory 901 and a communication interface 903, and the processor 902, the communication interface 903 and the memory 901 may be connected to each other or connected to each other through a bus 904. Wherein the memory 901 is used for storing program codes and data of the second node, and the communication interface 903 is used for supporting the second node to communicate. The processor 902 calls the code stored in the memory 901 for control management. The memory 901 may or may not be coupled to the processor.

The processor 902 may be a central processing unit, general-purpose processor, digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, transistor logic, hardware component, or any combination thereof. Which may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the disclosure herein. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a digital signal processor and a microprocessor, or the like.

In the case of dividing each functional module by corresponding functions, fig. 10 shows a possible structural diagram of the third node involved in the above embodiment, where the third node includes: a receiving unit 1003 and a processing unit 1002. Wherein, the receiving unit 1003 is configured to support the step of receiving by the third node in the method embodiment; a processing unit 1002, configured to support the step of link measurement of the third node in the method embodiment. Optionally, the third node may further include a sending unit 1001, and the sending unit 1001 is configured to support the step of sending by the third node in the method embodiment.

In terms of hardware implementation, the transmitting unit 1001 may be a transmitter, a transmitting circuit, or the like, the receiving unit 1003 may be a receiver, a receiving circuit, or the like, and the transmitting unit 1001 and the receiving unit 1003 may form a communication interface. The processing unit 1002 may be a processor or a processing circuit.

Fig. 11 is a schematic diagram of a possible logical structure of the third node according to the foregoing embodiments, which is provided in this application. The third node includes: a processor 1102. In an embodiment of the present application, the processor 1102 is configured to control and manage an action of a third node in the embodiment. Optionally, the third node may further comprise a memory 1101, a communication interface 1103, and the processor 1102, the communication interface 1103 and the memory 1101 may be connected to each other or to each other through a bus 1104. The memory 1101 is used for storing program codes and data of the third node, and the communication interface 1103 is used for supporting the communication of the third node. The processor 1102 calls code stored in the memory 1101 for control management. The memory 1101 may or may not be coupled to the processor.

The processor 1102 may be, among other things, a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, transistor logic, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a digital signal processor and a microprocessor, or the like. The bus 1104 may be a peripheral component interconnect standard PCI bus or an extended industry standard architecture EISA bus or the like.

The above-mentioned scheme provided by the embodiment of the present application is introduced mainly from the perspective of interaction between network elements. It will be appreciated that the respective network elements, e.g. the first node, the second node and the third node, for performing the above-described functions, comprise corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art would readily appreciate that the present application is capable of being implemented as hardware or a combination of hardware and computer software for performing the exemplary network elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In another embodiment of the present application, a readable storage medium is further provided, where the readable storage medium stores computer-executable instructions, and when a device (which may be a single chip, a chip, or the like) or a processor may invoke the readable storage medium to store the computer-executable instructions to perform the steps of the first node, the second node, or the third node in the measurement method provided in fig. 4. The aforementioned readable storage medium may include: u disk, removable hard disk, read only memory, random access memory, magnetic disk or optical disk, etc. for storing program codes.

In another embodiment of the present application, there is also provided a computer program product comprising computer executable instructions stored in a computer readable storage medium; the computer executable instructions may be read by the at least one processor of the apparatus from a computer readable storage medium, and execution of the computer executable instructions by the at least one processor causes the apparatus to perform the steps of the first node, the second node, or the third node in the measurement method provided in fig. 4.

In another embodiment of the present application, there is also provided a communication system including a plurality of devices including a first node, a second node, and a third node. Wherein, the first node may be the first node provided in fig. 6 or fig. 7, and is configured to perform the steps of the first node in the measurement method provided in fig. 4; and/or the second node may be the second node provided in fig. 8 or fig. 9 and configured to perform the steps of the second node in the measurement method provided in fig. 4; and/or the third node may be the third node provided in fig. 10 or fig. 11 and configured to perform the steps of the third node in the measurement method provided in fig. 4.

Finally, it should be noted that: the above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Yet another aspect of the application provides an apparatus comprising the processor executing code in memory to cause the apparatus to perform the various methods described previously. The memory stores code and data therein. The memory is located in the device, the memory coupled to the processor. The memory may also be located outside the device.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for link measurement, the method being applied to a wireless communication system including a first node, a second node and a third node, the method comprising:

a first node receives a link measurement request sent by a second node; and

the first node sends link measurement information of at least one node to at least one node of the second node and the third node so as to inform the at least one node of measuring a link; wherein the link measurement information of the at least one node includes at least one of the following link measurement information: a first type of link measurement information and a second type of link measurement information; the first type of link measurement information is measurement information of a link between the first node and at least one of the second node and the third node, the second type of link measurement information is measurement information of a link between the second node and the third node, and the first type of link measurement information and the second type of link measurement information are sent through different information elements or messages.

2. The method of claim 1, wherein the type of the link measurement information of the at least one node is determined according to indication information indicating the type of the link measurement information of the at least one node, and the type of the link measurement information of the at least one node comprises a first type of link measurement information and a second type of link measurement information.

3. The method of claim 2, wherein the indication information comprises at least one of:

an indication of a type of the link measurement information;

power information corresponding to a type of the link measurement information;

an index of a pilot or synchronization signal corresponding to a type of the link measurement information; and

information of a time domain resource, the information of the time domain resource corresponding to a type of the link measurement information.

4. The method of any one of claims 1-3, further comprising:

the first node receives pilot frequency resource information or synchronous signal resource information of the third node sent by the third node;

and the first node determines the link measurement information of the at least one node according to the pilot frequency resource information or the synchronous signal resource information of the third node.

5. A method for link measurement, the method being applied to a wireless communication system including a first node, a second node and a third node, the method comprising:

the second node sends a link measurement request to the first node; the second node receives the link measurement information of the second node sent by the first node; wherein the link measurement information of the second node includes at least one of the following configuration information: link measurement information of a first type of the second node and link measurement information of a second type of the second node; the first type of link measurement information of the second node is measurement information of a link between the first node and the second node, the second type of link measurement information of the second node is measurement information of a link between the second node and the third node, and the first type of link measurement information of the second node and the second type of link measurement information of the second node are sent through different information elements or messages;

and the second node measures the link according to the link measurement information of the second node.

6. The method of claim 5, wherein the type of the link measurement information of the second node is determined according to indication information indicating the type of the link measurement information of the second node, the type of the link measurement information of the second node comprising a first type of link measurement information of the second node and a second type of link measurement information of the second node.

7. The method of claim 6, wherein the indication information comprises at least one of:

an indication of a type of the link measurement information;

power information corresponding to a type of the link measurement information;

8. A first node, comprising:

a receiving unit, configured to receive a link measurement request sent by a second node; and

a sending unit, configured to send link measurement information of at least one node to at least one node of the second node and the third node; wherein the link measurement information of the at least one node includes at least one of the following link measurement information: a first type of link measurement information and a second type of link measurement information; the first type of link measurement information is measurement information of a link between the first node and at least one of the second node and a third node, the second type of link measurement information is measurement information of a link between the second node and the third node, and the first type of link measurement information and the second type of link measurement information are sent by different information elements or messages.

9. The first node of claim 8, wherein the type of link measurement information for the at least one node is determined from indication information indicating the type of link measurement information for the at least one node, the type of link measurement information for the at least one node comprising a first type of link measurement information and a second type of link measurement information.

10. The first node of claim 9, wherein the indication information includes at least one of:

an indication of a type of the link measurement information;

power information corresponding to a type of the link measurement information;

11. The first node of any of claims 8-10,

the receiving unit is configured to receive pilot resource information or synchronization signal resource information of the third node sent by the third node;

wherein the first node further comprises a processing unit configured to determine the at least one node link measurement information according to the pilot resource information or the synchronization signal resource information of the third node.

12. A second node, comprising:

a transmitting unit, configured to transmit a link measurement request to a first node; and

a receiving unit, configured to receive link measurement information of the second node sent by the first node; wherein the link measurement information of the second node includes at least one of the following configuration information: link measurement information of a first type of the second node and link measurement information of a second type of the second node; the first type of link measurement information of the second node is measurement information of a link between the first node and the second node, the second type of link measurement information of the second node is measurement information of a link between the second node and a third node, and the first type of link measurement information of the second node and the second type of link measurement information of the second node are sent through different information elements or messages;

and the processing unit is used for measuring the link according to the link measurement information of the second node.

13. The second node of claim 12, wherein the type of the link measurement information of the second node is determined according to indication information indicating the type of the link measurement information of the second node, and the type of the link measurement information of the second node comprises a first type of the link measurement information of the second node and a second type of the link measurement information of the second node.

14. The second node of claim 13, wherein the indication information includes at least one of:

indication information of a type of the link measurement information;

power information corresponding to a type of the link measurement information;

information of time domain resources corresponding to a type of the link measurement information.

15. An apparatus, characterized in that the apparatus comprises: a processor; the processor configured to perform the method of link measurement according to any one of claims 1-7.

16. An apparatus, characterized in that the apparatus comprises: a processor and a memory; the memory has stored therein a computer program which, when executed by the processor, causes the apparatus to perform the method of link measurement according to any of claims 1-7.

17. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when run on a computer, causes the computer to perform the method of link measurement according to any one of claims 1-7.