CN115699873A

CN115699873A - Relay node switching method, terminal equipment and network equipment

Info

Publication number: CN115699873A
Application number: CN202080102168.7A
Authority: CN
Inventors: 胡荣贻
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2023-02-03
Anticipated expiration: 2040-08-19
Also published as: WO2022036612A1; CN115699873B

Abstract

The application relates to a relay node switching method, terminal equipment and network equipment, wherein the method comprises the following steps: a first device measures a downlink reference signal of a third device to obtain a first measurement result, wherein the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least comprises a second device; the first equipment acquires the running state parameters of the first equipment; and when the first measurement result meets a first condition and/or the operation state parameter meets a second condition, the first device sends relay node switching request information to the third device, wherein the relay node switching request information is used for requesting the third device to configure the second device as a relay node device, and configure the first device as a remote node device.

Description

Relay node switching method, terminal equipment and network equipment

Technical Field

The present application relates to the field of communications, and in particular, to a relay node switching method, a terminal device, and a network device.

Background

Device to Device (D2D) and Vehicle to other Device (V2X, also known as internet of vehicles) technologies are important components of mobile communications. In D2D or V2X scenarios, direct communication between devices is supported through Sidelink (SL) transmission techniques. In general, a "sidelink" or "sidechain" refers to a communication link between terminals, and the link between terminals is applicable to a communication node in any scenario, such as an in-car scenario, a home scenario, and the like, which does not require network coverage. Sidelink transmissions have higher spectral efficiency and lower transmission delays relative to the uplink or downlink in cellular systems where communication data is required to be transceived by a base station. The V2X system supports two transmission modes, in the mode A, the transmission resource of the terminal is distributed by the base station, and the terminal transmits the side data on the side uplink according to the resource distributed by the base station; in mode B, the terminal uses listening (monitoring) and reservation (reservation) transmission modes, for example, the terminal obtains an available transmission resource set in a resource pool by listening, and selects a resource from the set for sidelink transmission. With the continuous evolution of the next generation mobile communication 5G new air interface NR system, especially the rise of the automatic driving technology, higher requirements are put forward on the sidestream data interaction between multiple terminals in the V2X system, such as higher throughput, lower delay, higher reliability, larger coverage area, more flexible resource allocation, and the like.

In the NR sidelink technology, in view of a wider application range, studies have been made on a sidelink-based relay (relay) function, and since a relay node of a sidelink SL is susceptible to sudden channel condition deterioration, resulting in a downlink or sidelink transmission failure, a relay transmission mechanism for sidelink communication needs to be further explored.

Disclosure of Invention

In view of this, embodiments of the present application provide a relay node switching method, a terminal device, and a network device.

The embodiment of the application provides a relay node switching method, which comprises the following steps:

a first device measures a downlink reference signal of a third device to obtain a first measurement result, wherein the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least comprises a second device;

the first equipment acquires the running state parameters of the first equipment;

and when the first measurement result meets a first condition and/or the operation state parameter meets a second condition, the first device sends relay node switching request information to the third device, wherein the relay node switching request information is used for requesting the third device to configure the second device as a relay node device, and configure the first device as a remote node device.

a second device sends reference data to a first device, where the reference data includes a second measurement result and/or an operation state parameter of the second device, the second measurement result includes a measurement result obtained by the second device measuring a downlink reference signal of a third device, and/or the second device monitors a monitoring result obtained by the third device for a downlink physical channel or a downlink reference signal of the first device, where the second device is currently configured as a remote node device of the third device, and a corresponding relay node device is the first device; the reference data is used for the first device to determine whether to send relay node switching request information, wherein the relay node switching request information is used for requesting the third device to configure the second device as a relay node device and configure the first device as a remote node device.

a first device sends reference data to a second device, where the reference data includes a first measurement result and/or an operation state parameter of the first device, the first measurement result includes a measurement result obtained by the first device measuring a downlink reference signal of a third device, where the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least includes the second device; the reference data is used for the second device to determine whether to trigger relay node handover request information, where the relay node handover request information is used to request the third device to configure the second device as a relay node device, and configure the first device as a remote node device.

the method comprises the steps that a second device measures a downlink reference signal of a third device aiming at the second device to obtain a measurement result, and/or the second device monitors a downlink physical channel or a downlink reference signal of the third device aiming at a first device to obtain a monitoring result, the measurement result and/or the monitoring result are used as a second measurement result, the second device is currently configured as a remote node device of the third device, and a corresponding relay node device is the first device;

the second device receives reference data sent by the first device, wherein the reference data comprises a first measurement result and/or an operation state parameter of the first device, and the first measurement result comprises a measurement result obtained by the first device measuring a downlink reference signal of a third device;

the second device determines whether to transmit relay node handover request information based on at least one of: the first measurement result, the running state parameter of the first device, the second measurement result and the running state parameter of the second device; wherein the relay node handover request information is used to request the third device to configure the second device as a relay node device and the first device as a remote node device.

receiving relay node switching request information by third equipment, wherein the current relay node equipment of the third equipment comprises first equipment, and corresponding remote node equipment comprises second equipment;

and the third equipment configures the second equipment as relay node equipment and configures the first equipment as remote node equipment according to the relay node switching request information.

a first device receives an operation state parameter of a second device sent by the second device, wherein the first device is currently configured as a relay node device of a third device, and a corresponding remote node device at least comprises the second device;

and the first equipment sends the running state parameter information of the first equipment and the running state parameter information of the second equipment to the third equipment.

and the second equipment sends the running state parameter information of the second equipment to the first equipment, wherein the second equipment is currently configured as the remote node equipment of the third equipment, and the corresponding relay node equipment is the first equipment.

the method comprises the steps that a third device receives operation state parameter information of the first device and operation state parameter information of a second device, wherein the operation state parameter information of the first device and the operation state parameter information of the second device are sent by the first device, the first device is currently configured as a relay node device of the third device, and the second device is currently configured as a far-end node device;

and if the third condition is met, the third device configures the second device as a relay node device and configures the first device as a remote node device.

An embodiment of the present application further provides a terminal device, including:

a measurement module, configured to measure a downlink reference signal of a third device to obtain a first measurement result, where the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least includes a second device;

the acquisition module is used for acquiring the running state parameters of the acquisition module;

a sending module, configured to send relay node handover request information to the third device when the first measurement result meets a first condition and/or when the operating state parameter meets a second condition, where the relay node handover request information is used to request the third device to configure the second device as a relay node device, and configure the first device as a remote node device.

a sending module, configured to send reference data to a first device, where the reference data includes a second measurement result and/or an operation state parameter of the second device, and the second measurement result includes a measurement result obtained by the second device measuring a downlink reference signal of the third device, and/or a monitoring result obtained by the second device monitoring a downlink physical channel or a downlink reference signal of the third device with respect to the first device, where the second device is currently configured as a remote node device of the third device, and a corresponding relay node device is the first device; the reference data is used for the first device to determine whether to send relay node handover request information, where the relay node handover request information is used to request the third device to configure the second device as a relay node device, and configure the first device as a remote node device.

An embodiment of the present application further provides a terminal device, which is a first device, and includes:

a sending module, configured to send reference data to a second device, where the reference data includes a first measurement result and/or an operating state parameter of the first device, and the first measurement result includes a measurement result obtained by the first device measuring a downlink reference signal of a third device, where the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least includes the second device; the reference data is used for the second device to determine whether to trigger relay node handover request information, where the relay node handover request information is used to request the third device to configure the second device as a relay node device and the first device as a remote node device.

The embodiment of the present application further provides a terminal device, which is a second device, and includes:

a measurement module, configured to measure a downlink reference signal of a second device by a third device to obtain a measurement result, and/or monitor a downlink physical channel or a downlink reference signal of a first device by the third device to obtain a monitoring result, and use the measurement result and/or the monitoring result as a second measurement result, where the second device is currently configured as a remote node device of the third device, and a corresponding relay node device is the first device;

a receiving module, configured to receive reference data sent by the first device, where the reference data includes a first measurement result and/or an operation state parameter of the first device, and the first measurement result includes a measurement result obtained by the first device measuring a downlink reference signal of a third device;

a determining module for determining whether to transmit relay node handover request information based on at least one of: the first measurement result, the running state parameter of the first device, the second measurement result and the running state parameter of the second device; wherein the relay node handover request information is used to request the third device to configure the second device as a relay node device and the first device as a remote node device.

An embodiment of the present application further provides a communication device, which is a third device, including:

a receiving module, configured to receive relay node handover request information, where the current relay node device of the third device includes a first device, and a corresponding remote node device includes a second device;

and the configuration module is used for configuring the second equipment as relay node equipment and configuring the first equipment as remote node equipment according to the relay node switching request information.

a receiving module, configured to receive an operation state parameter of the second device sent by the second device, where the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least includes the second device;

and the sending module is used for sending the running state parameter information of the first equipment and the running state parameter information of the second equipment to the third equipment.

An embodiment of the present application further provides a terminal device, which is a second device, and includes:

a sending module, configured to send the running state parameter information of the first device to the first device, where the second device is currently configured as a remote node device of a third device, and a corresponding relay node device is the first device.

a receiving module, configured to receive operation state parameter information of a first device and operation state parameter information of a second device, where the first device is currently configured as a relay node device of the third device, and the second device is currently configured as a remote node device;

a configuration module, configured to configure the second device as a relay node device and the first device as a remote node device, if a third condition is met.

An embodiment of the present application further provides a terminal device, including: a processor and a memory, wherein the memory is used for storing a computer program, and the processor calls and runs the computer program stored in the memory to execute the relay node switching method.

An embodiment of the present application further provides a network device, including: a processor and a memory, the memory is used for storing computer programs, the processor calls and runs the computer programs stored in the memory, and the relay node switching method is executed.

An embodiment of the present application further provides a chip, including: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the relay node switching method.

An embodiment of the present application further provides a computer-readable storage medium for storing a computer program, where the computer program enables a computer to execute the relay node handover method as described above.

Embodiments of the present application further provide a computer program product, which includes computer program instructions, where the computer program instructions cause a computer to execute the relay node handover method described above.

An embodiment of the present application further provides a computer program, where the computer program enables a computer to execute the relay node handover method described above.

By using the embodiment of the application, the relay node can be switched at a proper time, the link failure caused by the bad relay node can be avoided as much as possible, and the reliability and effectiveness of system transmission are improved.

Drawings

Fig. 1 and fig. 2 are schematic diagrams of architectures of two sidelink communication systems according to embodiments of the present application.

Fig. 3 is a flowchart of a relay node switching method on a first device side according to an embodiment of the present application.

FIG. 4 is a diagram illustrating device information interaction according to an embodiment of the present application.

Fig. 5 is a schematic diagram of device information interaction according to another embodiment of the present application.

Fig. 6 is a flowchart of a relay node switching method on the second device side according to an embodiment of the present application.

Fig. 7 is a flowchart of a relay node switching method on the third device side according to an embodiment of the present application.

Fig. 8 is a schematic diagram of device information interaction according to still another embodiment of the present application.

Fig. 9 is a schematic diagram of device information interaction according to still another embodiment of the present application.

Fig. 10 is a schematic diagram of a system architecture before and after handover of a relay node according to an embodiment of the present application.

Fig. 11 is a schematic structural block diagram of a first device according to an embodiment of the present application.

Fig. 12 is a schematic structural block diagram of a second device according to an embodiment of the present application.

Fig. 13 is a schematic block diagram of a third device according to an embodiment of the present application.

Fig. 14 is a schematic block diagram of a communication device according to an embodiment of the present application.

Fig. 15 is a schematic block diagram of a chip of an embodiment of the present application.

Fig. 16 is 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 described below with reference to the drawings in the embodiments of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: global System for Mobile communications (GSM) System, code Division Multiple Access (CDMA) System, wideband Code Division Multiple Access (WCDMA) System, general Packet Radio Service (GPRS), long Term Evolution (Long Term Evolution, LTE) System, LTE-a System, new Radio (NR) System, evolution System of NR System, LTE-based Access to unlicensed spectrum, LTE-U) System, NR-based to unlicensed spectrum (NR-U) System, non-Terrestrial communication network (NTN) System, universal Mobile Telecommunications System (UMTS), wireless Local Area Network (WLAN), wireless Fidelity (WiFi), 5th-Generation (5G) System, or other communication systems.

Generally, conventional Communication systems support a limited number of connections and are easy to implement, however, with the development of Communication technologies, mobile Communication systems will support not only conventional Communication, but also, for example, device to Device (D2D) Communication, machine to Machine (M2M) Communication, machine Type Communication (MTC), vehicle to Vehicle (V2V) Communication, or Vehicle networking (V2X) Communication, and the embodiments of the present application can also be applied to these Communication systems. Fig. 1 and 2 schematically show two operating modes of a V2X communication system, in which terminal devices may receive downlink DL data of network devices and terminals may transmit data via sidelink SL.

Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.

Various embodiments are described in connection with a network device and a terminal device, where the terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment.

The terminal device may be a Station (ST) in a WLAN, and 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) device, a handheld device with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next generation communication system such as an NR Network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) Network, and the like.

In the embodiment of the application, the terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.).

In this embodiment, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in city (smart city), a wireless terminal device in smart home (smart home), or the like.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application function, and need to be matched with other equipment such as a smart phone for use, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

In this embodiment of the present application, the network device may be a device for communicating with a mobile device, and the network device may be an Access Point (AP) in a WLAN, a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB, NB) in WCDMA, an evolved Node B (eNB or eNodeB) in LTE, a relay Station or an Access Point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network or a network device in a PLMN network that is evolved in the future.

By way of example and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a Medium Earth Orbit (MEO) satellite, a Geostationary Earth Orbit (GEO) satellite, a High Elliptical Orbit (HEO) satellite, or the like. Alternatively, the network device may be a base station installed on land, water, or the like.

In this embodiment, a network device may provide a service for a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells), and the like, and the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" is used herein to describe the association relationship of the associated objects, for example, it means that there may be three relationships between the associated objects before and after, for example, a and/or B may mean: the three cases of A alone, A and B simultaneously and B alone. The character "/" herein generally indicates a relationship in which the former and latter associated objects are "or".

In the description of the embodiments of the present application, the term "correspond" may indicate that there is a direct correspondence or an indirect correspondence between the two, may also indicate that there is an association between the two, and may also indicate and is indicated, configure and is configured, and the like.

In order to clearly illustrate the idea of the embodiment of the present application, a brief description is given below of possible problems in the SL relay scenario of sidelink relay transmission.

1. The channel condition varies: SL relay nodes may face sudden channel condition degradation, relay failure resulting in downlink or sidelink transmission failure (Radio link failure);

2. power consumption or power saving requirements: the SL relay node needs to forward and return, so compared with a remote SL (remote) node, the SL relay node has higher power consumption, and there is an optimization requirement.

3. In some networks, the SL node is not allowed to communicate with the network and other specific nodes at the same time, and relay node and remote node operations need to be set. A typical scenario is that a set of smart headsets includes a main headset and an auxiliary headset, and the main headset and the auxiliary headset cannot be connected to a playback device node (e.g., a mobile phone or a sound box) at the same time, so that in order to synchronize the main headset and the auxiliary headset, one of the headsets (e.g., the main headset) needs to be used as a relay node, and the other headset (e.g., the auxiliary headset) needs to be used as a remote node, and the main headset receives audio information of the playback device node and forwards the audio information to the auxiliary headset, so that the dual headsets receive the audio information at the same time, and synchronous playback is achieved. In other typical scenarios, for example, in a home heterogeneous network, the original relay node may also fail due to the movement of the node position or non-line-of-sight transmission, resulting in failure of downlink or sidelink transmission.

Herein, the sidelink SL relay node includes a terminal device configured as a SL relay node, and the SL remote node includes a terminal device configured as a SL remote node, and for convenience of description, the SL relay node is simply referred to as a relay node hereinafter, and the SL remote node is simply referred to as a remote node hereinafter.

To this end, an embodiment of the present application provides a relay node switching method, which is applied to a terminal device, where the terminal device is referred to as a first device in this embodiment, and with reference to fig. 3, the method includes:

s11, a first device measures a downlink reference signal of a third device to obtain a first measurement result, wherein the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least comprises a second device;

s12, the first equipment acquires the running state parameters of the first equipment;

s13, when the first measurement result meets a first condition and/or when the operating state parameter meets a second condition, the first device sends relay node handover request information to the third device, where the relay node handover request information is used to request the third device to configure the second device as a relay node device, and configure the first device as a remote node device.

In this embodiment of the application, optionally, the third device may be a network device (e.g., a base station), or may also be a terminal device (e.g., a head-of-group terminal or a central control node device in an SL communication group), where the third device may send data to the relay node, and the relay node forwards the data to the remote node, and the third device may also receive information reported by the relay node, and the remote node may send the information to the relay node, and the relay node forwards the information to the third device, and the remote node may also send the information to the third device in a broadcast manner.

According to an embodiment of the present application, when the first device is a relay node, the second device is a remote node, the first device may measure a downlink Reference Signal of the third device, and the Reference Signal may be, for example, a Synchronization Signal Block (SSB), a Channel state information Reference Signal (CSI-RS), and the like, where the measurement result may be a measurement value such as a Received Signal Strength Indicator (RSSI) of the Reference Signal, a Received Power (RSRP) of the Reference Signal, a Received Signal Quality (RSRQ) of the Reference Signal, or a Signal to Interference plus Noise Ratio (SINR). The first device may further obtain an operating state parameter of the first device, for example: the remaining capacity of the device, the temperature of the device (such as the temperature of a chip) and other state information.

If the measurement result of the first device on the reference signal meets a first condition, for example, the measurement result is lower than a preset first threshold value, it indicates that transmission failure easily occurs by continuing to use the first device as a relay node; or the operation state parameter of the first device meets a second condition, for example, the remaining power of the first device is smaller than a corresponding threshold (for example, the threshold is 50%, 40%, 30% or lower), which indicates that the first device may stop working in a short time, and a transmission failure is likely to occur as a relay node; referring to fig. 4, when one or more of the above situations are met, the first device may send relay node handover request information to the third device, for requesting the third device to handover the relay node to another device.

Referring to fig. 5, the first device may further receive reference data sent by the second device, where the reference data includes a second measurement result obtained by the second device and/or operation state parameter information of the second device, where the second measurement result includes a reference signal measurement result and/or a channel monitoring result of the second device, and is used for the first device to determine an opportunity to send the relay node switching request information. The following description will be made separately.

Optionally, the first device receives a second measurement result sent by the second device, where the second measurement result includes a measurement result obtained by the second device measuring a downlink reference signal of the third device, and/or a monitoring result obtained by the second device monitoring a downlink physical channel or a downlink reference signal of the first device for the third device;

in one embodiment, the first condition comprises: the first measurement is less than the second measurement,

in another embodiment, the first condition comprises: the first measurement result is smaller than the second measurement result, and the first measurement result is smaller than a first threshold value.

And under the condition that the first condition is met, the first equipment sends relay node switching request information to the third equipment.

Optionally, the first device receives operation state parameter information sent by the second device;

in one embodiment, the second condition comprises: the operating state parameter of the second device is greater than the corresponding threshold value,

in another embodiment, the second condition comprises: the running state parameter of the first device is smaller than the corresponding threshold value, and the running state parameter of the second device is larger than the running state parameter of the first device.

And under the condition that the second condition is met, the first equipment sends relay node switching request information to the third equipment.

That is to say, with the embodiment of the present application, when the reference signal measurement result of the relay node device and/or the device state information meet a predetermined condition, the first device may send out relay node switching request information for requesting to switch the relay node from the first device to the second device.

By using the embodiment of the application, the relay node can be switched at a proper time, link failure caused by poor relay nodes can be avoided as much as possible, and the reliability and effectiveness of system transmission are improved.

In consideration of the fact that the data transmission amount of different service types is different, the embodiment of the present application sets different priorities for the aforementioned first condition and second condition, and optionally, may process the following steps:

(1) when the priority of the first condition is higher than that of the second condition, the first equipment determines to send relay node switching request information according to the first condition;

(2) when the priority of the second condition is higher than that of the first condition, the first equipment determines to send relay node switching request information according to the second condition;

wherein the priority of the first condition and the second condition is preconfigured or determined by the first device.

For example, for a Service which has a relatively high power consumption and a relatively high requirement on Quality of Service (QoS) guarantee when the intelligent terminal device runs a game class, a video class, or the like, the priority of the first condition may be set to be higher than the priority of the second condition so as to maintain a high-performance data transmission state; the terminal equipment such as an ammeter, a water meter and a watch is mostly used for transmitting text small data packets, the priority level of the second condition can be set to be higher than that of the first condition, and the terminal equipment can continuously operate to realize required data transmission.

Optionally, before the first device receives the information sent by the second device, the method further includes: and after the running state parameter of the first device is smaller than the corresponding threshold value, the first device sends data request information to the second device, so as to request the second device to send the second measurement result and/or the running state parameter information to the first device.

Optionally, the first device may further send, to the second device, the relay node handover request information for notifying the second device of preparing to handover to the relay node.

Correspondingly, an embodiment of the present application further provides a relay node switching method, which is applied to a terminal device, where this terminal device is referred to as a second device in this embodiment, and with reference to fig. 6, the method includes:

s21, a second device sends reference data to a first device, where the reference data includes a second measurement result and/or an operation state parameter of the second device, and the second measurement result includes a measurement result obtained by the second device measuring a downlink reference signal of a third device, and/or a monitoring result obtained by the second device monitoring a downlink physical channel or a downlink reference signal of the first device, where the second device is currently configured as a remote node device of the third device, and a corresponding relay node device is the first device; the reference data is used for the first device to determine whether to send relay node handover request information, where the relay node handover request information is used to request the third device to configure the second device as a relay node device, and configure the first device as a remote node device.

According to an embodiment of the present application, currently, the second device is a remote node, the first device is a relay node, the second device may measure a downlink reference signal (e.g., SSB, CSI-RS, etc.) of the communication device to obtain a measurement result, and the second device may also monitor a downlink physical channel or a downlink reference signal of the third device for the first device to obtain a monitoring result.

Optionally, the second device may send the reference data to the first device in at least one of the following manners:

the second device transmits said reference data to the first device periodically or aperiodically;

the second device sends the reference data to the first device after the operating state parameter is greater than or equal to the corresponding threshold value;

the second device sends the reference data to the first device after the second measurement result is greater than or equal to a second threshold value;

the second device transmits the reference data to the first device after receiving the reference data request information transmitted by the first device.

Optionally, the second device receives the relay node handover request information sent by the first device, which indicates that the second device is to be handed over from the remote node to the relay node.

Optionally, after the second device is configured as a relay node device by the third device, the second device receives data sent by the third device, and forwards the data to the first device.

Correspondingly, an embodiment of the present application further provides a relay node switching method, which is applied to a third device, where the third device may be a network device or a terminal device in this embodiment, and with reference to fig. 7, the method includes:

s31, a third device receives relay node switching request information, wherein the current relay node device of the third device comprises a first device, and a corresponding remote node device comprises a second device;

and S32, the third equipment configures the second equipment as relay node equipment and configures the first equipment as remote node equipment according to the relay node switching request information.

Optionally, corresponding to the foregoing multiple embodiments, the relay node handover request information may be from the first device, may be from the second device, and may also be from broadcast information.

Based on the above embodiments, the remote node device may send its own measurement information, monitoring information, and/or operation status information to the relay node device, and the relay node device determines whether to trigger the handover of the relay node, so as to improve the reliability and effectiveness of system transmission. The embodiment of the present application further provides a relay node switching method, which may determine a switching time of a relay node by a remote node device (second device), which is described in detail below with reference to fig. 8.

The embodiment of the present application provides a relay node switching method, which is applied to a terminal device, where the terminal device is referred to as a first device, and the method includes:

s101, a first device sends reference data to a second device, where the reference data includes a first measurement result and/or an operation state parameter of the first device, and the first measurement result includes a measurement result obtained by the first device measuring a downlink reference signal of a third device, where the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least includes the second device; the reference data is used for the second device to determine whether to trigger relay node handover request information, where the relay node handover request information is used to request the third device to configure the second device as a relay node device, and configure the first device as a remote node device.

Optionally, the first device sends reference data to the second device, including at least one of:

the first device transmits said reference data to the second device periodically or aperiodically;

after the operating state parameter of the first device is lower than the corresponding threshold value, sending the reference data to the second device;

the first device sends the reference data to the second device after the first measurement result is smaller than a first threshold value.

Referring to fig. 12, for a remote node (second device) of the network, a general channel measurement reporting process is an SL remote node in an Idle state (Idle) or an Inactive state (Inactive) in the network, and since cell reselection reports a measurement result to a base station, when a cell reselection condition is satisfied, the SL remote node is switched to a node in the network. In this embodiment, it should be noted that the remote node may not only report the measurement information to the network, but also share the measurement result information to the SL relay node (first device) for assisting the relay node or the network device in optimizing the link transmission.

Correspondingly, an embodiment of the present application further provides a relay node switching method, which is applied to a terminal device, where the terminal device is referred to as a second device in this embodiment, and the method includes:

s201, a second device measures a downlink reference signal of a third device for the second device to obtain a measurement result, and/or the second device monitors a downlink physical channel or a downlink reference signal of the third device for a first device to obtain a monitoring result, and uses the measurement result and/or the monitoring result as a second measurement result, where the second device is currently configured as a remote node device of the third device, and a corresponding relay node device is the first device;

s202, the second device receives reference data sent by the first device, where the reference data includes a first measurement result and/or an operation state parameter of the first device, and the first measurement result includes a measurement result obtained by the first device measuring a downlink reference signal of a third device;

s203, the second device determines whether to trigger the relay node handover request information based on at least one of: the first measurement result, the operation state parameter of the first device, the second measurement result and the operation state parameter of the second device; wherein the relay node handover request information is used to request the third device to configure the second device as a relay node device and the first device as a remote node device.

Optionally, the triggering, by the second device, the relay node handover request information includes: the second device sends relay node handover request information to the first device or the second device sends relay node handover request information through broadcast information, in at least one of the following cases:

the first measurement result is smaller than a first threshold value;

the first measurement result is less than the second measurement result and the first measurement result is less than a first threshold value;

the running state parameter of the second equipment is larger than a corresponding threshold value;

the running state parameter of the first device is smaller than the corresponding threshold value, and the running state parameter of the second device is larger than the running state parameter of the first device.

After receiving the relay node switching request information, the third device configures the second device as a relay node device and configures the first device as a remote node device according to the relay node switching request information.

The above embodiments describe a processing manner for determining the relay node switching time by the remote node device, in which when the remote node meets the switching condition, the remote node may actively trigger the switching. In addition, an embodiment of the present application further provides a relay node switching method, which can determine a switching timing of a relay node by a network device or a group head terminal device (third device), and is described in detail below with reference to fig. 9.

An embodiment of the present application provides a relay node switching method, which is applied to a terminal device, where the terminal device is referred to as a first device in this embodiment, and the method includes:

s110, a first device receives an operation state parameter of the second device sent by the second device, where the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least includes the second device;

and S120, the first device sends the running state parameter information of the first device and the running state parameter information of the second device to the third device.

and S210, the second device sends the running state parameter information of the second device to the first device, wherein the second device is currently configured as a remote node device of the third device, and the corresponding relay node device is the first device.

Correspondingly, an embodiment of the present application further provides a relay node switching method, which is applied to a terminal device, where the terminal device is referred to as a third device in this embodiment, and the method includes:

s310, a third device receives operation state parameter information of the first device and operation state parameter information of the second device, where the first device is currently configured as a relay node device of the third device, and the second device is currently configured as a remote node device;

s320, if the third condition is met, the third device configures the second device as a relay node device, and configures the first device as a remote node device.

Optionally, the third condition comprises at least one of:

the operating state parameter of the first device is less than the corresponding threshold value;

the operating state parameter of the first device is smaller than the corresponding threshold value, and the operating state parameter of the second device is greater than the corresponding threshold value;

the operating status parameter of the first device is smaller than the corresponding threshold value, and the operating status parameter of the second device is larger than the operating status parameter of the first device.

Based on at least one embodiment provided by the application, the switching process of the relay node can be triggered at a proper time, link failure caused by poor relay nodes can be avoided, and the reliability and effectiveness of system transmission are improved.

Various implementation manners of the present application are described above through a plurality of embodiments, and specific implementation processes of the embodiments of the present application are described in detail below through a plurality of specific examples.

Fig. 10 schematically illustrates a system diagram before and after a relay node is switched according to an embodiment of the present application, where a first device is a relay node B, a second device is a remote node C, and a third device is a base station or a head-of-group terminal a. Referring to fig. 10, a base station or a group head terminal a may transmit data to a current relay node B, and forward the data to a remote node C by the relay node B, so as to implement sharing and synchronization of data information. In practical applications, node a may be, for example, a multimedia player (e.g., a mobile phone, a sound box), node B may be a main headset, and node C may be a sub-headset.

According to the embodiments of the present application, on one hand, a relay node handover request may be issued based on a channel measurement condition of a remote node C and/or a relay node B (which may be obtained by measuring a reference signal of a base station or a head-of-group terminal a), and on the other hand, an operation state of the terminal itself (such as that the power of the relay node B and the remote node C is too low, the device temperature is too high, an artificial trigger, etc.) may be used as "trigger information", and the base station or the head-of-group terminal a may reconfigure a new relay node based on the handover request information or the "trigger information", for example, the relay node in fig. 10 is switched from B to C, that is, the original remote node C is reconfigured as a relay node, the original relay node B is reconfigured as a remote node, and data transmission between the three nodes a, B, and C is not affected by degradation of the relay node. Specific embodiments and processes are described below.

Example 1

Referring to fig. 10, a node a transmits information to a node B, which relays transmission to a node C. The node B receives and measures the measurement reference signal (e.g., SSB, CSI-RS, etc.) of the node a in the downlink to obtain a measurement result 1 (corresponding to the a-B link). The node C receives and measures the measurement reference signal (e.g., SSB, CSI-RS, etc.) of the node a in the downlink, and obtains a measurement result 2 (corresponding to the a-C link).

According to an embodiment of the application, node C sends measurement 2 to B, where,

1) Node C may periodically or aperiodically send measurement 2 to relay node B; or,

2) When meeting a first event, the node C reports and sends a measurement result 2 to the relay node B, where the first event may be that the node B meets a first trigger condition (for example, an electric quantity, a temperature, or another state condition reaches a corresponding threshold); the first event may also be that when the measurement result 2 of the node C meets a preset threshold, the measurement result 2 is reported to the node B.

3) The node B may also send request information to the node C, for requesting the node C to report the measurement result 2 to the node B.

If the measurement value of the measurement result 1 is lower than the preset measurement threshold value, the node B sends relay node switching request information to the node A, and optionally, the node B can also send the relay node switching request information to the node C;

and the node A reconfigures a new relay node to be C based on the switching request information, configures transmission resources to the node C and disconnects the connection transmission with the node B. And the node C serves as a new relay node to receive the information of the node A and relay and forward the information to the node B.

By using the embodiment of the application, the switching of the relay node can be dynamically realized through the switching request information, the efficiency of relay forwarding is improved while the communication quality of the link is ensured, the link failure can be better solved, the power consumption or the power saving of the SL node is balanced, and the transmission reliability and the effectiveness of a system are ensured.

Example 2

Referring to fig. 10, similar to embodiment 1, node a sends information to node B, which relays transmission to node C. The node B receives and measures the measurement reference signal of the node a in the downlink to obtain a measurement result 1. And the node C receives and measures the measurement reference signal of the node A in a downlink manner to obtain a measurement result 2. Node C sends measurement 2 to B.

The difference between this embodiment and embodiment 1 is mainly that, if the measurement value of measurement result 1 is lower than the measurement value of measurement result 2 reported by node B, node B sends the relay node handover request message to node a, and may also send the relay node handover request message to node C.

Example 3

Referring to fig. 10, similar to embodiment 1, node a sends information to node B, which relays transmission to node C. And the node B receives and measures the measurement reference signal of the node A in a downlink manner to obtain a measurement result 1. And the node C receives and measures the measurement reference signal of the node A in a downlink manner to obtain a measurement result 2. Node C sends measurement 2 to B.

The present embodiment is different from embodiment 1 mainly in that the relay node B obtains its own device status parameters, such as device remaining power, device temperature, or other status index parameters, and when at least one status parameter of the relay node B satisfies a trigger condition (for example, the power is lower than a preset threshold, or the device temperature is higher than a preset threshold), the node B compares the measurement results, specifically:

when the measurement value of the measurement result 1 is lower than the corresponding measurement threshold value, or when the measurement value of the measurement result 1 is lower than the measurement value of the measurement result 2 reported by the node C, the node B sends the relay node switching request information to the node a, and can also send the relay node switching request information to the node C at the same time.

And the node A reconfigures a new relay node to be C based on the switching request information, configures transmission resources to the node C and disconnects the connection transmission with the node B. And C, serving as a new relay node, receiving the information of A and relaying and forwarding the information to the node B.

Example 4

The present embodiment is different from embodiment 1 mainly in that, when the relay node B satisfies a first trigger condition (for example, the power, temperature, or other status condition of the node B device reaches a threshold value), the node B sends a measurement result request message to the node C; the node C reports the latest measurement result 2 to the node B; b receives the measurement result 2, wherein,

if the measurement value of the measurement result 1 is lower than the measurement value of the latest measurement result 2 reported by the node C, the node B sends relay node switching request information to the node A (or the node A and the node C);

and the point A reconfigures a new relay node to be C based on the switching request information, configures transmission resources to the node C and disconnects the connection transmission with the node B. And C, serving as a new relay node, receiving the information of the A and relaying and forwarding the information to the node B.

By using the embodiment of the application, the switching of the relay node can be dynamically realized through double judgment of the triggering condition and the switching request, the relay forwarding efficiency is improved while the link communication quality is ensured, the link failure can be better solved, the power consumption or the power saving of the SL node can be balanced, and the transmission reliability and the effectiveness of a system can be ensured.

Example 5

if the measured value of the measurement result 1 is lower than the measured value of the measurement result 2 reported by the node C and lower than a preset measurement threshold value, the node B sends first relay node switching request information to the node A (or A and C);

based on the switching request information, the node A reconfigures a new relay node to be C, configures transmission resources to the node C and disconnects the connection transmission with the node B. And C, serving as a new relay node, receiving the information of A and relaying and forwarding the information to the node B.

Example 6

The difference between this embodiment and embodiment 1 is mainly that the node B collects device operation state information of itself and the node C in real time, for example, device remaining power, device temperature, or other state index parameters, and reports the device operation state information of itself and the node C to the node a.

When the device operation state information of the node B and the node C meets the second trigger condition (for example, the device state information is the remaining power of the device, the remaining power of the node B is lower than a preset remaining power threshold, or the remaining power of the node B is lower than the remaining power threshold and the remaining power of the node C is higher than the remaining power threshold), the node a triggers a relay node switching process, reconfigures the relay node to be C, configures transmission resources to the node C, and disconnects connection transmission with the node B. And C, serving as a new relay node, receiving the information of A and relaying and forwarding the information to the node B.

In one or more embodiments of the present application, measurement result 2 (a-C link) may be sent by remote node C to relay node B, which compares the measurement results and determines whether to trigger relay node handover. Conversely, the relay node B may also send the measurement result 1 to the remote node C, and the remote node C compares the measurement result and determines whether to switch.

In an embodiment of the present application, optionally, considering that the relay node B may be connected to a plurality of remote nodes (e.g., C1, C2, and C3) simultaneously, the node B may send a measurement result 1 (a-B link) to C1, C2, and C3 in a multicast manner, where the measurement result 1 of the node B is obtained by measuring a network downlink reference signal in an RRC connected state, and since C1, C2, and C3 are not connected to the network but are in a network coverage range, C1, C2, and C3 may obtain a measurement result 2 for cell selection or reselection in an idle state or in an inactive state, the remote nodes C1, C2, and C3 may compare the measurement result 1 with the measurement result 2 to determine whether the remote nodes C1, C2, and C3 are connected to the node a in a handover manner.

In another embodiment of the present application, optionally, in addition to measuring the measurement reference signal (e.g., SSB, CSI-RS, etc.) of the node a to obtain the measurement result 2 (a-C link), the node C may also monitor or monitor the information sent by the node a to the node B, and measure the signal quality (e.g., RSRP, RSSI, etc.) of the information, that is, the measurement result 2 in this embodiment of the present application may include the measurement value of the downlink physical channel sent by the node a to the node B, such as RSSI, RSRP, RSRQ, SINR, etc., of the PDCCH, PDSCH, or downlink reference signal.

In the embodiment of the present application, optionally, the terminal node in each embodiment of the present application may be an intelligent wearable device such as a mobile phone, a watch, and an earphone, or a non-intelligent device such as an electric meter and a water meter.

In this embodiment, optionally, transmission channels of the a-B link, the B-C link, and the a-C link in the embodiments of the present application may be carried on a licensed frequency band or an unlicensed frequency band (e.g., SL-U); the transmission of the B-C link may be based on the resource configuration in network scheduling (mode a) or may be based on the resource configuration in autonomous scheduling (mode B).

In the embodiment of the present application, optionally, the threshold value or the threshold value mentioned in the embodiments of the present application may be preconfigured, may also be network configured, and may also be terminal configured.

The specific arrangement and implementation of the embodiments of the present application are described above from different perspectives by way of a plurality of embodiments. Corresponding to the processing method of at least one embodiment described above, an embodiment of the present application further provides a terminal device 100, which is a first device with reference to fig. 11, where the first device includes:

a measurement module 110, configured to measure a downlink reference signal of a third device to obtain a first measurement result, where the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least includes a second device;

an obtaining module 120, configured to obtain an operating state parameter of the device;

a sending module 130, configured to send relay node handover request information to the third device when the first measurement result meets a first condition and/or when the operating state parameter meets a second condition, where the relay node handover request information is used to request the third device to configure the second device as a relay node device, and configure the first device as a remote node device.

In the embodiment of the present application, optionally, a determination module is further included,

the determining module is configured to determine to send relay node handover request information according to the first condition when the priority of the first condition is higher than the priority of the second condition;

the determining module is further configured to determine, by the first device according to the second condition, to send relay node handover request information when the priority of the second condition is higher than the priority of the first condition;

In this embodiment of the present application, optionally, the first condition includes: the first measurement result is less than a first threshold value.

In the embodiment of the present application, optionally, the method further includes:

a receiving module, configured to receive a second measurement result sent by the second device, where the second measurement result includes a measurement result obtained by the second device measuring a downlink reference signal of the third device, and/or a monitoring result obtained by the second device monitoring a downlink physical channel or a downlink reference signal of the first device for the third device;

the first condition includes: the first measurement is less than the second measurement,

alternatively, the first condition includes: the first measurement result is smaller than the second measurement result, and the first measurement result is smaller than a first threshold value.

In an embodiment of the present application, optionally, the second condition includes: and the running state parameter of the first equipment is smaller than the corresponding threshold value.

In an embodiment of the present application, optionally, the method further includes:

the receiving module is used for receiving the running state parameter information sent by the second equipment;

the second condition includes: the operating state parameter of the second device is greater than a corresponding threshold value,

alternatively, the second condition comprises: the operation state parameter of the first device is smaller than the corresponding threshold value, and the operation state parameter of the second device is larger than the operation state parameter of the first device.

In an embodiment of the application, optionally, the sending module is further configured to send data request information to the second device after the operating state parameter of the first device is smaller than the corresponding threshold value, so as to request the second device to send the second measurement result and/or the operating state parameter information to the first device.

In an embodiment of the present application, optionally, the operating state parameter includes a remaining power parameter of the device; and/or, the first measurement comprises at least one of: a received signal strength indication RSSI, a reference signal received power RSRP, a reference signal received quality RSRQ and a signal to interference plus noise ratio SINR; and/or, the second measurement comprises at least one of: received signal strength indication RSSI, reference signal received power RSRP, reference signal received quality RSRQ, signal to interference plus noise ratio SINR.

In this embodiment of the present application, optionally, the sending module is further configured to send the relay node handover request information to the second device.

In this embodiment of the application, optionally, the third device is a network device, or the third device is a terminal device.

Referring to fig. 12, an embodiment of the present application further provides a terminal device 200, which is a second device, including:

a sending module 210, configured to send reference data to a first device, where the reference data includes a second measurement result and/or an operation state parameter of the second device, and the second measurement result includes a measurement result obtained by the second device measuring a downlink reference signal of the third device, and/or a monitoring result obtained by the second device monitoring a downlink physical channel or a downlink reference signal of the third device with respect to the first device, where the second device is currently configured as a remote node device of the third device, and a corresponding relay node device is the first device; the reference data is used for the first device to determine whether to send relay node handover request information, where the relay node handover request information is used to request the third device to configure the second device as a relay node device, and configure the first device as a remote node device.

In an embodiment of the present application, optionally, the sending module 210 sends the reference data to the first device periodically or aperiodically;

and/or, the sending module 210 sends the reference data to the first device after the operating state parameter is greater than or equal to the corresponding threshold value;

and/or, the sending module 210 sends the reference data to the first device after the second measurement result is greater than or equal to a second threshold value;

and/or, the sending module 210 sends the reference data to the first device after receiving the reference data request information sent by the first device.

a receiving module, configured to receive relay node handover request information sent by the first device.

a transceiver module, configured to receive data sent by the third device and forward the data to the first device after the second device is configured as a relay node device by the third device.

An embodiment of the present application further provides a terminal device, which is a first device, where the first device includes:

a sending module, configured to send reference data to a second device, where the reference data includes a first measurement result and/or an operating state parameter of the first device, and the first measurement result includes a measurement result obtained by the first device measuring a downlink reference signal of a third device, where the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least includes the second device; the reference data is used for the second device to determine whether to trigger relay node handover request information, where the relay node handover request information is used to request the third device to configure the second device as a relay node device, and configure the first device as a remote node device.

In an embodiment of the application, optionally, the sending module sends the reference data to the second device periodically or aperiodically;

and/or after the running state parameter is lower than the corresponding threshold value, the sending module sends the reference data to the second device;

and/or the sending module sends the reference data to the second device after the first measurement result is smaller than a first threshold value.

An embodiment of the present application further provides a terminal device, which is a second device, where the second device includes:

a determining module for determining whether to transmit relay node handover request information based on at least one of: the first measurement result, the operation state parameter of the first device, the second measurement result and the operation state parameter of the second device; wherein the relay node handover request information is used to request the third device to configure the second device as a relay node device and the first device as a remote node device.

In the embodiment of the present application, optionally, the method further includes: a sending module, configured to send relay node handover request information to the first device or send relay node handover request information through broadcast information by the second device, where the relay node handover request information includes at least one of:

the first measurement result is smaller than a first threshold value;

the operation state parameter of the first device is smaller than the corresponding threshold value, and the operation state parameter of the second device is larger than the operation state parameter of the first device.

Referring to fig. 13, an embodiment of the present application further provides a communication device 300, which is a third device, including:

a receiving module 310, configured to receive relay node handover request information, where a current relay node device of the third device includes a first device, and a corresponding remote node device includes a second device;

a configuring module 320, configured to configure the second device as a relay node device and configure the first device as a remote node device according to the relay node handover request information.

In the embodiment of the present application, optionally, the relay node handover request information is from at least one of: the first device, the second device, broadcast information;

the third device is a network device, or the third device is a terminal device.

a receiving module, configured to receive an operation state parameter of the second device sent by the second device, where a first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least includes the second device;

The embodiment of the present application further provides a terminal device, which is a second device, where the second device includes:

An embodiment of the present application further provides a communication device, which is a third device, where the third device includes:

In an embodiment of the present application, optionally, the third condition comprises at least one of:

the running state parameter of the first equipment is smaller than a corresponding threshold value;

the running state parameter of the first device is smaller than a corresponding threshold value, and the running state parameter of the second device is larger than the corresponding threshold value;

In embodiments of the present application, the first and second electrodes may, optionally,

the operation state parameters comprise residual electric quantity parameters of the equipment;

and/or, the first measurement comprises at least one of: the signal strength indicator RSSI, the reference signal received power RSRP, the reference signal received quality RSRQ and the signal to interference plus noise ratio SINR are received;

and/or, the second measurement comprises at least one of: a received signal strength indication RSSI, a reference signal received power RSRP, a reference signal received quality RSRQ and a signal to interference plus noise ratio SINR;

the communication device is a network device, or the third device is a terminal device.

Each device in the embodiment of the present application can implement the corresponding function of each device in the foregoing method embodiment, and the corresponding flow, function, implementation manner and beneficial effect of each module (sub-module, unit or assembly, etc.) in each device may refer to the corresponding description in the foregoing method embodiment, which is not described herein again.

It should be noted that the functions described in relation to each module (sub-module, unit, or component, etc.) in each device in the embodiment of the present application may be implemented by different modules (sub-module, unit, or component, etc.), or may be implemented by the same module (sub-module, unit, or component, etc.), for example, the first sending module and the second sending module may be different modules, or may be the same module, and both may implement the corresponding functions of the terminal device in the embodiment of the present application.

Fig. 14 is a schematic block diagram of a communication device 600 according to an embodiment of the present application, where the communication device 600 includes a processor 610, and the processor 610 may call and execute a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, the communication device 600 may also include a memory 620. From the memory 620, the processor 610 may call and run a computer program to implement the method in the embodiment of the present application.

The memory 620 may be a separate device from the processor 610 or may be integrated into the processor 610.

Optionally, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 630 may include a transmitter and a receiver, among others. The transceiver 630 may further include one or more antennas.

Optionally, the communication device 600 may be a network device according to this embodiment, and the communication device 600 may implement a corresponding process implemented by the network device in each method according to this embodiment, which is not described herein again for brevity.

Optionally, the communication device 600 may be a terminal device in this embodiment, and the communication device 600 may implement a corresponding process implemented by the terminal device in each method in this embodiment, which is not described herein again for brevity.

Fig. 15 is a schematic block diagram of a chip 700 according to an embodiment of the present application, where the chip 700 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, chip 700 may also include memory 720. From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.

Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the terminal device in the embodiments of fig. 7 to 9 in the present application, and the chip may implement the corresponding process implemented by the terminal device in each method in the embodiments of the present application, and for brevity, no further description is given here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

The processors referred to above may be general purpose processors, digital Signal Processors (DSPs), field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general-purpose processor mentioned above may be a microprocessor, or any conventional processor, etc.

The above-mentioned memories may be volatile or nonvolatile memories or may include both volatile and nonvolatile memories. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM).

It should be understood that the above memories are exemplary but not limiting, for example, the memories in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct Rambus RAM (DR RAM), and the like. The memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Fig. 16 is a schematic block diagram of a communication system 800 according to an embodiment of the application, the communication system 800 comprising a terminal device 810 and a network device 820.

The terminal device 810 may be configured to implement the corresponding functions implemented by the terminal device in the methods of the embodiments of the present application, and the network device 820 may be configured to implement the corresponding functions implemented by the network device in the methods of the embodiments of the present application. For brevity, further description is omitted herein.

In the above embodiments, all or part of the implementation may be 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 application 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 can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, 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.) means. 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 includes one or more 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.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not imply any order of execution, and the order of execution of the processes should be determined by their functions and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

The above description is only for the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall cover the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A relay node switching method comprises the following steps:

a first device measures a downlink reference signal of a third device to obtain a first measurement result, wherein the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least comprises a second device;

the first equipment acquires the running state parameters of the first equipment;

and when the first measurement result meets a first condition and/or the operation state parameter meets a second condition, the first device sends relay node switching request information to the third device, wherein the relay node switching request information is used for requesting the third device to configure the second device as a relay node device, and configure the first device as a remote node device.
The method of claim 1, wherein,

when the priority of the first condition is higher than that of the second condition, the first equipment determines to send relay node switching request information according to the first condition;

when the priority of the second condition is higher than that of the first condition, the first equipment determines to send relay node switching request information according to the second condition;

the priorities of the first condition and the second condition are preconfigured or determined by the first device.
The method of claim 1 or 2,

the first condition includes: the first measurement result is less than a first threshold value.
The method of claim 1 or 2, further comprising:

the first device receives a second measurement result sent by the second device, where the second measurement result includes a measurement result obtained by the second device measuring a downlink reference signal of the third device, and/or a monitoring result obtained by the second device monitoring a downlink physical channel or a downlink reference signal of the first device for the third device;

the first condition includes: the first measurement is less than the second measurement,

or,

the first condition includes: the first measurement result is smaller than the second measurement result, and the first measurement result is smaller than a first threshold value.
The method of claim 1 or 2,

the second condition includes: and the running state parameter of the first equipment is smaller than the corresponding threshold value.
The method of claim 1 or 2, further comprising:

the first equipment receives the running state parameter information sent by the second equipment;

the second condition includes: the operating state parameter of the second device is greater than the corresponding threshold value,

or,

the second condition includes: the operation state parameter of the first device is smaller than the corresponding threshold value, and the operation state parameter of the second device is larger than the operation state parameter of the first device.
The method of claim 4 or 6, prior to the first device receiving the information sent by the second device, the method further comprising:

and after the running state parameter of the first device is smaller than the corresponding threshold value, the first device sends data request information to the second device, so as to request the second device to send the second measurement result and/or the running state parameter information to the first device.
The method of any one of claims 1-7,

the running state parameters comprise the residual electric quantity parameters of the equipment;

and/or the presence of a gas in the atmosphere,

the first measurement result comprises at least one of: a received signal strength indication RSSI, a reference signal received power RSRP, a reference signal received quality RSRQ and a signal to interference plus noise ratio SINR;

and/or the presence of a gas in the atmosphere,

the second measurement result includes at least one of: received signal strength indication RSSI, reference signal received power RSRP, reference signal received quality RSRQ, signal to interference plus noise ratio SINR.
The method according to any one of claims 1-8, further comprising:

the first device also sends the relay node handover request information to the second device.
The method of any one of claims 1-9,

the third device is a network device, or the third device is a terminal device.
A relay node switching method comprises the following steps:

a second device sends reference data to a first device, where the reference data includes a second measurement result and/or an operation state parameter of the second device, the second measurement result includes a measurement result obtained by the second device measuring a downlink reference signal of a third device, and/or the second device monitors a monitoring result obtained by the third device for a downlink physical channel or a downlink reference signal of the first device, where the second device is currently configured as a remote node device of the third device, and a corresponding relay node device is the first device; the reference data is used for the first device to determine whether to send relay node switching request information, wherein the relay node switching request information is used for requesting the third device to configure the second device as a relay node device and configure the first device as a remote node device.
The method of claim 11, the second device sending reference data to the first device, comprising:

the second device periodically or aperiodically transmits the reference data to the first device;

and/or the presence of a gas in the gas,

after the operating state parameter of the second device is greater than or equal to the corresponding threshold value, the reference data is sent to the first device;

and/or the presence of a gas in the gas,

the second device sends the reference data to the first device after the second measurement result is greater than or equal to a second threshold value;

and/or the presence of a gas in the atmosphere,

and after receiving the reference data request information sent by the first equipment, the second equipment sends the reference data to the first equipment.
The method of claim 11 or 12, further comprising:

and the second equipment receives the relay node switching request information sent by the first equipment.
The method of claim 11 or 12, further comprising:

after the second device is configured as a relay node device by the third device, receiving data sent by the third device, and forwarding the data to the first device.
A relay node switching method comprises the following steps:

a first device sends reference data to a second device, where the reference data includes a first measurement result and/or an operation state parameter of the first device, the first measurement result includes a measurement result obtained by the first device measuring a downlink reference signal of a third device, where the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least includes the second device; the reference data is used for the second device to determine whether to trigger relay node handover request information, where the relay node handover request information is used to request the third device to configure the second device as a relay node device, and configure the first device as a remote node device.
The method of claim 15, the first device sending reference data to a second device, comprising:

the first device periodically or aperiodically transmits the reference data to the second device;

and/or the presence of a gas in the atmosphere,

after the running state parameter of the first equipment is lower than the corresponding threshold value, the reference data is sent to the second equipment;

and/or the presence of a gas in the gas,

and the first equipment sends the reference data to the second equipment after the first measurement result is smaller than a first threshold value.
A relay node switching method comprises the following steps:

the method comprises the steps that a second device measures a downlink reference signal of a third device aiming at the second device to obtain a measuring result, and/or the second device monitors a downlink physical channel or a downlink reference signal of the third device aiming at a first device to obtain a monitoring result, and the measuring result and/or the monitoring result are/is used as a second measuring result, wherein the second device is currently configured as a far-end node device of the third device, and the corresponding relay node device is the first device;

the second device receives reference data sent by the first device, wherein the reference data comprises a first measurement result and/or an operation state parameter of the first device, and the first measurement result comprises a measurement result obtained by the first device measuring a downlink reference signal of a third device;

the second device determines whether to transmit relay node handover request information based on at least one of: the first measurement result, the running state parameter of the first device, the second measurement result and the running state parameter of the second device; wherein the relay node handover request information is used to request the third device to configure the second device as a relay node device and the first device as a remote node device.
The method of claim 17, wherein,

the second device sends relay node handover request information to the first device or the second device sends relay node handover request information through broadcast information, in at least one of the following cases:

the first measurement result is smaller than a first threshold value;

the first measurement result is less than the second measurement result and the first measurement result is less than a first threshold value;

the running state parameter of the second equipment is larger than a corresponding threshold value;

the operation state parameter of the first device is smaller than the corresponding threshold value, and the operation state parameter of the second device is larger than the operation state parameter of the first device.
A relay node switching method comprises the following steps:

receiving relay node switching request information by third equipment, wherein the current relay node equipment of the third equipment comprises first equipment, and corresponding remote node equipment comprises second equipment;

and the third equipment configures the second equipment as relay node equipment and configures the first equipment as remote node equipment according to the relay node switching request information.
The method of claim 19, wherein,

the relay node handover request information is from at least one of: the first device, the second device, broadcast information;

the third device is a network device, or the third device is a terminal device.
A relay node switching method comprises the following steps:

a first device receives an operation state parameter of a second device sent by the second device, wherein the first device is currently configured as a relay node device of a third device, and a corresponding remote node device at least comprises the second device;

and the first equipment sends the running state parameter information of the first equipment and the running state parameter information of the second equipment to the third equipment.
A relay node switching method comprises the following steps:

and the second equipment sends the running state parameter information of the second equipment to the first equipment, wherein the second equipment is currently configured as the remote node equipment of the third equipment, and the corresponding relay node equipment is the first equipment.
A relay node switching method comprises the following steps:

the method comprises the steps that a third device receives operation state parameter information of the first device and operation state parameter information of a second device, wherein the operation state parameter information of the first device and the operation state parameter information of the second device are sent by the first device, the first device is currently configured as a relay node device of the third device, and the second device is currently configured as a far-end node device;

if a third condition is met, the third device configures the second device as a relay node device and the first device as a remote node device.
The method of claim 23, the third condition comprising at least one of:

the running state parameter of the first equipment is smaller than a corresponding threshold value;

the running state parameter of the first device is smaller than a corresponding threshold value, and the running state parameter of the second device is larger than the corresponding threshold value;

the operation state parameter of the first device is smaller than the corresponding threshold value, and the operation state parameter of the second device is larger than the operation state parameter of the first device.
The method of claim 23 or 24,

the operation state parameters comprise residual electric quantity parameters of the equipment;

and/or the presence of a gas in the gas,

the first measurement result includes at least one of: a received signal strength indication RSSI, a reference signal received power RSRP, a reference signal received quality RSRQ and a signal to interference plus noise ratio SINR;

and/or the presence of a gas in the gas,

the second measurement result includes at least one of: a received signal strength indication RSSI, a reference signal received power RSRP, a reference signal received quality RSRQ and a signal to interference plus noise ratio SINR;

and/or the presence of a gas in the atmosphere,

the third device is a network device, or the third device is a terminal device.
A terminal device that is a first device, the first device comprising:

a measurement module, configured to measure a downlink reference signal of a third device to obtain a first measurement result, where the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least includes a second device;

the acquisition module is used for acquiring the running state parameters of the acquisition module;

a sending module, configured to send relay node handover request information to the third device when the first measurement result meets a first condition and/or when the operating state parameter meets a second condition, where the relay node handover request information is used to request the third device to configure the second device as a relay node device, and configure the first device as a remote node device.
The terminal device of claim 26, further comprising a determination module,

the determining module is used for determining to send the relay node switching request information according to the first condition when the priority of the first condition is higher than the priority of the second condition;

the determining module is further configured to determine, by the first device according to the second condition, to send relay node handover request information when the priority of the second condition is higher than the priority of the first condition;

wherein the priority of the first condition and the second condition is pre-configured or determined by the first device.
The terminal device of claim 26 or 27,

the first condition includes: the first measurement result is less than a first threshold value.
The terminal device of claim 26 or 27, further comprising:

a receiving module, configured to receive a second measurement result sent by the second device, where the second measurement result includes a measurement result obtained by the second device measuring a downlink reference signal of the third device, and/or a monitoring result obtained by the second device monitoring a downlink physical channel or a downlink reference signal of the first device for the third device;

the first condition includes: the first measurement is less than the second measurement,

or,

the first condition includes: the first measurement result is smaller than the second measurement result, and the first measurement result is smaller than a first threshold value.
The terminal device of claim 26 or 27,

the second condition includes: and the running state parameter of the first equipment is smaller than the corresponding threshold value.
The terminal device of claim 26 or 27, further comprising:

the receiving module is used for receiving the running state parameter information sent by the second equipment;

the second condition includes: the operating state parameter of the second device is greater than the corresponding threshold value,

or,

the second condition includes: the running state parameter of the first device is smaller than the corresponding threshold value, and the running state parameter of the second device is larger than the running state parameter of the first device.
The terminal device of claim 29 or 31,

the sending module is further configured to send data request information to the second device after the operating state parameter of the first device is smaller than the corresponding threshold value, and is configured to request the second device to send the second measurement result and/or the operating state parameter information to the first device.
The terminal device of any of claims 26-32,

the running state parameters comprise the residual electric quantity parameters of the equipment;

and/or the presence of a gas in the gas,

the first measurement result includes at least one of: the signal strength indicator RSSI, the reference signal received power RSRP, the reference signal received quality RSRQ and the signal to interference plus noise ratio SINR are received;

and/or the presence of a gas in the gas,

the second measurement result includes at least one of: received signal strength indication RSSI, reference signal received power RSRP, reference signal received quality RSRQ, signal to interference plus noise ratio SINR.
The terminal device of any of claims 26-33,

the sending module is further configured to send the relay node handover request information to the second device.
The terminal device of any of claims 26-34,

the third device is a network device, or the third device is a terminal device.
A terminal device that is a second device, the second device comprising:

a sending module, configured to send reference data to a first device, where the reference data includes a second measurement result and/or an operation state parameter of the second device, and the second measurement result includes a measurement result obtained by the second device measuring a downlink reference signal of the third device, and/or a monitoring result obtained by the second device monitoring a downlink physical channel or a downlink reference signal of the first device by the third device, where the second device is currently configured as a remote node device of the third device, and a corresponding relay node device is the first device; the reference data is used for the first device to determine whether to send relay node handover request information, where the relay node handover request information is used to request the third device to configure the second device as a relay node device, and configure the first device as a remote node device.
The terminal device of claim 36,

the transmitting module transmits the reference data to the first device periodically or aperiodically;

and/or the presence of a gas in the gas,

the sending module sends the reference data to the first device after the running state parameter is greater than or equal to the corresponding threshold value;

and/or the presence of a gas in the gas,

the sending module sends the reference data to the first device after the second measurement result is greater than or equal to a second threshold value;

and/or the presence of a gas in the atmosphere,

and the sending module sends the reference data to the first equipment after receiving the reference data request information sent by the first equipment.
The terminal device of claim 36 or 37, further comprising:

a receiving module, configured to receive relay node handover request information sent by the first device.
The terminal device of any of claims 36-38, further comprising:

a transceiver module, configured to receive data sent by the third device and forward the data to the first device after the second device is configured as a relay node device by the third device.
A terminal device that is a first device, the first device comprising:

a sending module, configured to send reference data to a second device, where the reference data includes a first measurement result and/or an operation state parameter of the first device, and the first measurement result includes a measurement result obtained by the first device measuring a downlink reference signal of a third device, where the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least includes the second device; the reference data is used for the second device to determine whether to trigger relay node handover request information, where the relay node handover request information is used to request the third device to configure the second device as a relay node device and the first device as a remote node device.
The terminal device of claim 40,

the transmitting module transmits the reference data to the second device periodically or aperiodically;

and/or the presence of a gas in the gas,

the sending module sends the reference data to the second equipment after the running state parameter is lower than the corresponding threshold value;

and/or the presence of a gas in the atmosphere,

and the sending module sends the reference data to the second device after the first measurement result is smaller than a first threshold value.
A terminal device that is a second device, the second device comprising:

a measurement module, configured to measure a downlink reference signal of a second device by a third device to obtain a measurement result, and/or monitor a downlink physical channel or a downlink reference signal of a first device by the third device to obtain a monitoring result, and use the measurement result and/or the monitoring result as a second measurement result, where the second device is currently configured as a remote node device of the third device, and a corresponding relay node device is the first device;

a receiving module, configured to receive reference data sent by the first device, where the reference data includes a first measurement result and/or an operation state parameter of the first device, and the first measurement result includes a measurement result obtained by the first device measuring a downlink reference signal of a third device;

a determining module for determining whether to transmit relay node handover request information based on at least one of: the first measurement result, the running state parameter of the first device, the second measurement result and the running state parameter of the second device; wherein the relay node handover request information is used to request the third device to configure the second device as a relay node device and the first device as a remote node device.
The terminal device of claim 42, further comprising:

a sending module, configured to send relay node handover request information to the first device or send relay node handover request information through broadcast information by the second device, where the relay node handover request information includes at least one of:

the first measurement result is less than a first threshold value;

the first measurement result is less than the second measurement result and the first measurement result is less than a first threshold value;

the running state parameter of the second equipment is larger than a corresponding threshold value;

the operation state parameter of the first device is smaller than the corresponding threshold value, and the operation state parameter of the second device is larger than the operation state parameter of the first device.
A communication device, being a third device, the third device comprising:

a receiving module, configured to receive relay node handover request information, where the current relay node device of the third device includes a first device, and a corresponding remote node device includes a second device;

and the configuration module is used for configuring the second equipment as relay node equipment and configuring the first equipment as remote node equipment according to the relay node switching request information.
The communication device of claim 44,

the relay node handover request information is from at least one of: the first device, the second device, broadcast information;

the third device is a network device, or the third device is a terminal device.
A terminal device that is a first device, the first device comprising:

a receiving module, configured to receive an operation state parameter of the second device sent by the second device, where the first device is currently configured as a relay node device of the third device, and a corresponding remote node device at least includes the second device;

and the sending module is used for sending the running state parameter information of the first equipment and the running state parameter information of the second equipment to the third equipment.
A terminal device that is a second device, the second device comprising:

and the sending module is used for sending the running state parameter information of the sending module to the first equipment, wherein the second equipment is currently configured as the remote node equipment of the third equipment, and the corresponding relay node equipment is the first equipment.
A communication device, being a third device, the third device comprising:

a receiving module, configured to receive operation state parameter information of a first device and operation state parameter information of a second device, where the first device is currently configured as a relay node device of the third device, and the second device is currently configured as a remote node device;

a configuration module, configured to configure the second device as a relay node device and the first device as a remote node device, if a third condition is met.
The communications apparatus of claim 48, the third condition comprises at least one of:

the running state parameter of the first equipment is smaller than a corresponding threshold value;

the running state parameter of the first device is smaller than a corresponding threshold value, and the running state parameter of the second device is larger than the corresponding threshold value;

the operation state parameter of the first device is smaller than the corresponding threshold value, and the operation state parameter of the second device is larger than the operation state parameter of the first device.
The communication device of claim 48 or 49,

the running state parameters comprise the residual electric quantity parameters of the equipment;

and/or the presence of a gas in the atmosphere,

the first measurement result includes at least one of: the signal strength indicator RSSI, the reference signal received power RSRP, the reference signal received quality RSRQ and the signal to interference plus noise ratio SINR are received;

and/or the presence of a gas in the atmosphere,

the second measurement result includes at least one of: the signal strength indicator RSSI, the reference signal received power RSRP, the reference signal received quality RSRQ and the signal to interference plus noise ratio SINR are received;

and/or the presence of a gas in the gas,

the communication device is a network device, or the third device is a terminal device.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor calling and running the computer program stored in the memory, performing the method of any of claims 1 to 25.
A network device, comprising: a processor and a memory for storing a computer program, the processor calling and executing the computer program stored in the memory to perform the method of any one of claims 19, 20 and 23-25.
A chip, comprising:

a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 25.
A computer readable storage medium storing a computer program, wherein the computer program causes a computer to perform the method of any one of claims 1 to 25.
A computer program product comprising computer program instructions, wherein the computer program instructions cause a computer to perform the method of any of claims 1 to 25.
A computer program for causing a computer to perform the method of any one of claims 1 to 25.