CN117204015A

CN117204015A - Wireless communication method and device

Info

Publication number: CN117204015A
Application number: CN202180097501.4A
Authority: CN
Inventors: 胡荣贻; 贺传峰; 徐伟杰; 崔胜江; 张治�; 邵帅
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2023-12-08
Also published as: WO2023004714A1

Abstract

The embodiment of the application provides a wireless communication method and device, comprising the following steps: the method is applied to the terminal equipment, the terminal equipment supplies power through the first equipment, and the method comprises the following steps: the terminal equipment determines the failure reason of the target link; and the terminal equipment sends the failure reason of the target link and/or a request corresponding to the failure reason of the target link to the second equipment. Thereby ensuring normal data transmission of the terminal equipment.

Description

Wireless communication method and device

Technical Field

The embodiment of the application relates to the field of communication, and more particularly relates to a wireless communication method and device.

Background

In the current communication network, terminals are active, and the active terminals can monitor the scheduling information of the opposite terminal and perform data transmission based on the scheduling information. As applications in the communication field increase, terminal types in the communication field are also increasing, for example: many communication industries currently have high requirements on power consumption of terminal devices, such as battery-free passive terminals or semi-passive terminal applications, become key technologies for many communication industries.

For the above passive terminals, even some semi-passive terminals or active terminals may not be battery powered in some cases, but rather require data transmission by backscatter. For such terminals, the failure of the link for transmitting the scheduling information may be caused by poor quality of the link itself or may be a problem in power supply of such terminals, so that the reason for reporting the failure of the link by such terminals is important, so that the opposite terminal can reallocate link resources or power supply to the terminal, thereby performing normal data transmission.

Disclosure of Invention

The embodiment of the application provides a wireless communication method and device, so that normal data transmission of terminal equipment is ensured.

In a first aspect, a wireless communication method is provided, including: the method is applied to the terminal equipment, the terminal equipment supplies power through the first equipment, and the method comprises the following steps: the terminal equipment determines the failure reason of the target link; and the terminal equipment sends the failure reason of the target link and/or a request corresponding to the failure reason of the target link to the second equipment.

In a second aspect, there is provided a wireless communication method, the method being applied to a second device, a terminal device being powered by a first device, the method comprising: and the second equipment receives the failure reason of the target link and/or a request corresponding to the failure reason of the target link sent by the terminal equipment.

In a third aspect, there is provided a terminal device powered by a first device, comprising: the system comprises a processing unit and a communication unit, wherein the processing unit is used for determining the failure reason of a target link; the communication unit is used for sending the failure reason of the target link and/or a request corresponding to the failure reason of the target link to the second device.

In a fourth aspect, there is provided a second device comprising: and the communication unit is used for receiving the failure reason of the target link and/or the request corresponding to the failure reason of the target link, which are sent by the terminal equipment.

In a fifth aspect, a terminal device is provided comprising a processor and a memory. The memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of the first aspect or an implementation thereof.

In a sixth aspect, a second device is provided that includes a processor and a memory. The memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of the second aspect or an implementation thereof.

In a seventh aspect, there is provided an apparatus for implementing the method of the first aspect, the second aspect or each implementation thereof.

Specifically, the device comprises: a processor for calling and running a computer program from a memory, causing a device in which the apparatus is installed to perform the method as in the first aspect, the second aspect or various implementations thereof described above.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, where the computer program causes a computer to perform the method of the first aspect, the second aspect or each implementation manner thereof.

In a ninth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of the first aspect, the second aspect or various implementations thereof.

In a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of the first aspect, the second aspect or various implementations thereof described above.

According to the technical scheme of the application, the terminal equipment can report the failure reason of the target link and/or the request corresponding to the failure reason of the target link, so that the second equipment can perform corresponding processing according to the failure reason of the target link and/or the request corresponding to the failure reason of the target link, thereby ensuring the normal data transmission of the terminal equipment.

Drawings

Fig. 1A is a schematic diagram of a communication system 100 according to an embodiment of the present application;

fig. 1B is a schematic diagram of a communication system 200 according to an embodiment of the present application;

fig. 1C is a schematic diagram of a communication system 300 according to an embodiment of the present application;

fig. 1D is a schematic diagram of a communication system 400 according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a zero power consumption communication system according to the present application;

FIG. 3 is a schematic diagram of backscatter communications provided by the present application;

FIG. 4 is a schematic diagram of energy harvesting according to an embodiment of the present application;

FIG. 5 is a schematic circuit diagram of a resistive load modulation according to an embodiment of the present application;

fig. 6 is an interaction flow chart of a wireless communication method according to an embodiment of the present application;

fig. 7 is a schematic diagram of a terminal device 700 according to an embodiment of the present application;

fig. 8 is a schematic diagram of a second apparatus 800 according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a communication device 900 provided in an embodiment of the present application;

fig. 10 is a schematic structural view of an apparatus of an embodiment of the present application.

Detailed Description

The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art to which the application pertains without inventive faculty, are intended to fall within the scope of the application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

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

The embodiment of the application can be applied to various communication systems, such as: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced long term evolution, LTE-a) system, new Radio (NR) system, evolution system of NR system, LTE-based access to unlicensed spectrum, LTE-U) system over unlicensed spectrum, NR (NR-based access to unlicensed spectrum, NR-U) system over unlicensed spectrum, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), next generation communication system, zero power consumption communication system, cellular internet of things, cellular passive internet of things or other communication system, etc.

The cellular internet of things is a development product of combining a cellular mobile communication network with the internet of things. The cellular passive internet of things, also referred to as passive cellular internet of things, is a combination of a network Device and a passive terminal, where in the cellular passive internet of things, the passive terminal may communicate with other passive terminals through the network Device, or the passive terminal may communicate in a Device-to-Device (D2D) communication manner, and the network Device only needs to send a carrier signal, that is, an energy supply signal, to supply energy to the passive terminal.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, as the communication technology advances, the mobile communication system will support not only conventional communication but also, for example, D2D communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), and inter-vehicle (Vehicle to Vehicle, V2V) communication, etc., and the embodiments of the present application can also be applied to these communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a Stand Alone (SA) fabric scenario.

The frequency spectrum of the application of the embodiment of the application is not limited. For example, the embodiment of the application can be applied to licensed spectrum and unlicensed spectrum.

Exemplary, a communication system 100 to which embodiments of the present application may be applied is shown in fig. 1A. The communication system 100 may include a network device 110 and a terminal device 120, wherein the network device 110 may be a device in communication with the terminal device 120 (or referred to as a communication terminal, terminal). The network device 110 may also power the terminal device 120.

Fig. 1A illustrates one network device and one terminal device, alternatively, the communication system 100 may include a plurality of network devices and each network device may include other numbers of terminal devices within a coverage area, which is not limited by the embodiment of the present application.

Optionally, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited by the embodiment of the present application.

Exemplary, a communication system 200 to which embodiments of the present application may be applied is shown in fig. 1B. The communication system 200 may include a network device 210, a terminal device 220, and a first device 230, wherein the network device 210 may be a device in communication with the terminal device 220 (or referred to as a communication terminal, terminal). The first device 230 may power the terminal device 120.

Fig. 1B illustrates one network device, one terminal device, and one first device, alternatively, the communication system 200 may include a plurality of network devices and each network device may include other numbers of terminal devices within a coverage area of the network device, and each terminal device may correspond to one first device, which is not limited by the embodiment of the present application.

Optionally, the communication system 200 may further include other network entities such as a network controller, a mobility management entity, and the embodiment of the present application is not limited thereto.

Exemplary, a communication system 300 to which embodiments of the present application may be applied is shown in fig. 1C. The communication system 300 may include a terminal device 310 and a terminal device 320, wherein the terminal device 310 may be a device in communication with the terminal device 320 (otherwise referred to as a communication terminal, terminal). The terminal device 310 may also power the terminal device 320.

Fig. 1C illustrates two terminal devices by way of example, and the communication system 300 may alternatively include other numbers of terminal devices, as embodiments of the present application are not limited in this regard.

Optionally, the communication system 300 may further include a network controller, a mobility management entity, and other network entities, which are not limited by the embodiment of the present application.

Exemplary, a communication system 400 to which embodiments of the present application may be applied is shown in fig. 1D. The communication system 400 may include a terminal device 410, a terminal device 420, and a first device 430, wherein the terminal device 410 may be a device in communication with the terminal device 420 (or referred to as a communication terminal, terminal). The first device 230 may power the terminal device 420.

Fig. 1D illustrates two terminal devices and a first device, alternatively, the communication system 400 may include other numbers of terminal devices, and each terminal device may correspond to a first device, which is not limited by the embodiments of the present application.

Optionally, the communication system 400 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited by the embodiment of the present application.

It should be appreciated that devices with communication capabilities in a network/system in embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in fig. 1A as an example, the communication device may include the network device 110 and the terminal device 120 with communication functions, where the network device 110 and the terminal device 120 may be specific devices described above, which are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application. Taking the communication system 200 shown in fig. 1B as an example, the communication device may include a network device 210, a terminal device 220, and a first device 230 with a communication function, where the network device 210, the terminal device 220, and the first device 230 may be the specific devices described above, which are not described herein again; the communication device may also include other devices in the communication system 200, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application. Taking the communication system 300 shown in fig. 1C as an example, the communication devices may include the terminal device 310 and the terminal device 320 with communication functions, where the terminal device 310 and the terminal device 320 may be specific devices described above, which are not described herein again; the communication device may also include other devices in the communication system 300, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application. Taking the communication system 400 shown in fig. 1D as an example, the communication device may include a terminal device 410, a terminal device 420, and a first device 430 with a communication function, where the terminal device 410, the terminal device 420, and the first device 430 may be the specific devices described above, which are not described herein again; the communication device may also include other devices in the communication system 400, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

Embodiments of the present application may be described in connection with the various communication systems described above, but are not limited thereto, e.g.: in fig. 1A and 1B, the network device and the terminal device employ direct communication, and in practice, a relay device may be further disposed between them, so as to implement communication between the network device and the terminal device through the relay device. For another example: the direct communication adopted between the terminal devices in fig. 1C and 1D may actually be a sideways relay device provided therebetween, so as to realize communication between the terminal devices through the sideways relay device. Wherein: the network device may be a device for communicating with the mobile device, the network device may be an Access Point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or an Access Point, or a vehicle device, a wearable device, and a network device (gNB) in NR network, or a network device in future evolved PLMN network, etc.

In the embodiment of the present application, a network device provides 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 transmitting power and are suitable for providing high-rate data transmission services.

In an embodiment of the present application, a terminal device (UE) may also be referred to as a User Equipment, 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, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, and a next generation communication system, e.g. a terminal device in an NR network or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, or a zero power consumption device, etc.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The 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 can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

It should be understood that a zero power device may be understood as a device having a power consumption lower than a preset power consumption, for example, including: passive terminals, even semi-passive terminals, etc. In recent years, zero power consumption devices have been increasingly used. A typical zero power device is RFID (Radio Frequency Identification), which is a technology for realizing automatic transmission and identification of contactless tag information by using a wireless radio frequency signal space coupling mode. RFID tags are also known as "radio frequency tags" or "electronic tags". The types of the electronic tags divided according to different power supply modes can be divided into active electronic tags, passive electronic tags and semi-passive electronic tags. The active electronic tag is also called an active electronic tag, namely the energy of the electronic tag is provided by a battery, the battery, a memory and an antenna form the active electronic tag together, and the active electronic tag is different from a passive radio frequency activation mode and transmits information through a set frequency band before the battery is replaced. The passive electronic tag is also called as a passive electronic tag, and does not support an internal battery, when the passive electronic tag approaches a reader-writer, the tag is in a near field range formed by the radiation of the reader-writer antenna, and the electronic tag antenna generates induction current through electromagnetic induction, and the induction current drives an electronic tag chip circuit. The chip circuit sends the identification information stored in the tag to the reader-writer through the electronic tag antenna. The semi-passive electronic tag is also called as a semi-active electronic tag, and inherits the advantages of small size, light weight, low price and long service life of the passive electronic tag, when the built-in battery does not have access of a reader-writer, only a few circuits in a chip are provided with power supply, and when the reader-writer accesses, the built-in battery supplies power to the RFID chip, so that the read-write distance of the tag is increased, and the reliability of communication is improved.

It will be appreciated that passive electronic tags are generally understood to be zero-power devices, and in some cases semi-passive electronic tags are also understood to be zero-power devices.

Fig. 2 is a schematic diagram of a zero-power consumption communication system provided by the present application, where, as shown in fig. 2, after a zero-power consumption device enters an electromagnetic field, the zero-power consumption device receives a radio frequency signal sent by a network device, and the zero-power consumption device uses energy obtained by the electromagnetic field generated in a space to transmit data.

Communication based on zero-power consumption equipment, namely zero-power consumption communication for short, comprises the following key technologies:

1. backscatter communication (Back Scattering)

Fig. 3 is a schematic diagram of backscatter communication provided in the present application, as shown in fig. 3, where a zero-power device receives a carrier signal sent by a network device, and uses a Radio Frequency (RF) energy collection module to collect energy, i.e. the energy collection module, so as to power a low-power processing module, i.e. the logic processing module in fig. 3, modulate the carrier signal, and perform backscatter.

It will be appreciated that the carrier signal transmitted by the above-described network device is also referred to as an energizing signal since it is used to provide energy to zero-power devices, and that the energizing signal to which the present application relates is also referred to as a carrier signal in some cases, and a carrier signal is also referred to as an energizing signal in some cases.

It should be appreciated that the backscatter communication principle shown in fig. 3 is illustrated by zero power devices and network devices, and that virtually any device having backscatter communication power and transmitting a carrier signal, the device for providing power may implement backscatter communication.

The principle of backscatter communication is mainly characterized as follows:

(1) The terminal equipment does not actively transmit signals, and realizes back scattering communication by modulating incoming wave signals;

(2) The terminal equipment does not depend on a traditional active power amplifier transmitter, and meanwhile, a low-power consumption computing unit is used, so that the hardware complexity is greatly reduced;

(3) Battery-free communication can be achieved in conjunction with energy harvesting.

Thus, the terminal device herein may be a zero power device (e.g., a passive terminal or even a semi-passive terminal), or even a non-zero power device such as a normal terminal, but the normal terminal may in some cases perform backscatter communication.

2. Energy harvesting (RF Power Harvesting)

Fig. 4 is an energy collection schematic diagram provided by the embodiment of the present application, as shown in fig. 4, a terminal device may use an RF energy collection module to collect space electromagnetic wave energy through electromagnetic induction, so as to drive a load circuit (low power consumption operation, sensor, etc.), and may implement battery-free.

3. Load modulation

The load modulation is carried out by adjusting the electrical parameters of the oscillation circuit of the terminal equipment according to the beat of the data stream, so that the magnitude and the phase of the impedance of the terminal equipment are changed accordingly, and the modulation process is completed. The load modulation technology mainly comprises two modes of resistance load modulation and capacitance load modulation.

In resistive load modulation, the load is connected in parallel with a resistor, called a load modulation resistor, which is turned on and off according to the clock of the data stream, and the on-off of the switch S is controlled by binary data encoding. The circuit schematic of resistive load modulation is shown in fig. 5 below. In capacitive load modulation, the load is connected in parallel with a capacitor instead of the load modulation resistor controlled by binary data encoding in fig. 5.

4. Encoding

The data transmitted by the electronic tag can be represented by binary '1' and '0' in different forms. Radio frequency identification systems typically use one of the following encoding methods: reverse Non Return to Zero (NRZ) encoding, manchester (Manchester) encoding, unipolar Return to Zero (unipole RZ) encoding, differential Biphase (DBP) encoding, miller (Miller) encoding, and differential motion encoding. In popular terms, 0 and 1 are represented by different pulse signals.

As mentioned above, for the above passive terminals, even some semi-passive terminals or active terminals may not be battery powered in some cases, but rather data transmission by backscatter means is required. For such terminals, the failure of the link for transmitting the scheduling information may be caused by poor quality of the link itself or may be a problem in power supply of such terminals, so that the reason for reporting the failure of the link by such terminals is important, so that the opposite terminal can reallocate link resources or power supply to the terminal, thereby performing normal data transmission. For example: for the communication system shown in fig. 1A or 1B, the downlink failure between the network devices and the terminal devices may be caused by the quality of the downlink itself, or the power supply of the terminal devices may be problematic. For another example: for the communication system shown in fig. 1C or 1D, the failure of the side link between the terminal devices may be caused by the quality of the side link itself, or may be a problem in the power supply of the terminal devices.

In order to solve the above technical problems, in the present application, a terminal device may report a cause of a link failure and/or a request corresponding to the cause, so that a device receiving the cause of the link failure, such as a network device or other terminal devices, may reallocate link resources or supply energy, thereby performing normal data transmission.

The technical scheme of the application will be described in detail as follows:

fig. 6 is an interaction flow chart of a wireless communication method according to an embodiment of the present application, where an execution subject involved in the method is a terminal device and a second device, and the terminal device is powered by a first device, as shown in fig. 6, and the method includes the following steps:

s610: the terminal equipment determines the failure reason of the target link.

S620: and the terminal equipment sends the failure reason of the target link and/or a request corresponding to the failure reason of the target link to the second equipment.

(optional) S630: and the second equipment performs corresponding processing according to the failure reason of the target link and/or the request corresponding to the failure reason of the target link.

In some implementations, the first device may be any one of, but is not limited to: wireless cellular base station, wireless relay, other terminal devices. The other terminal device may be, but not limited to, a sidestream relay device.

In some implementations, the second device may be any one of, but is not limited to: wireless cellular base station, wireless relay, other terminal devices. The other terminal device may be, but not limited to, a sidestream relay device.

In some implementations, the first device is the same as or different from the second device.

By way of example, the terminal device may be the terminal device 120 shown in fig. 1A, and the second device and the first device may each be the network device 110 shown in fig. 1A. Alternatively, the terminal device may be the terminal device 220 shown in fig. 1B, the first device may be the first device 230 shown in fig. 1B, and the second device may be the network device 210 shown in fig. 1B. Alternatively, the terminal device may be the terminal device 320 shown in fig. 1C, and both the second device and the first device may be the terminal device 310 shown in fig. 1C. Alternatively, the terminal device may be the terminal device 420 shown in fig. 1D, the first device may be the first device 430 shown in fig. 1D, and the second device may be the terminal device 410 shown in fig. 1D.

In some implementations, the target link is a link between the terminal device and the second device, but is not limited thereto.

In some implementations, the second device is a network device, such as network device 110 shown in fig. 1A, or network device 210 shown in fig. 1B, where the target link may be a downlink between the terminal device and the second device.

In some implementations, the second device is one in which the terminal device, such as terminal device 310 shown in fig. 1C, or terminal device 410 shown in fig. 1D, where the target link may be a sidelink between the terminal device and the second device.

Illustratively, as shown in fig. 1A, network device 110 may power terminal device 120 and network device 110 may transmit scheduling information to terminal device 120 via a downlink, in which case the link on which the power signal generated by network device 110 is located may be the same link as the downlink. There may be two scenarios: scenario one, terminal device 120 cannot receive the scheduling information, when the terminal device considers a downlink failure, where the reason for the downlink failure may be related to the powered signal quality, or to the downlink channel quality or downlink signal quality corresponding to the downlink. Accordingly, the terminal device 120 needs to determine the cause of the downlink failure. Scenario two, terminal device 120 periodically or periodically detects the powered signal quality, and the downlink channel quality or downlink signal quality corresponding to the downlink.

Illustratively, as shown in fig. 1B, the first device 230 may power the terminal device 220, and the network device 210 may transmit the scheduling information to the terminal device 220 through a downlink, in which case the link on which the power signal generated by the first device 230 is located is not the same link as the downlink. There may be two scenarios: scenario one, terminal device 220, cannot receive the scheduling information when the terminal device considers a downlink failure, wherein the reason for the downlink failure may be related to the powered signal quality, or to the downlink channel quality or downlink signal quality corresponding to the downlink. Therefore, the terminal device 220 needs to determine the cause of the downlink failure. In scenario two, the terminal device 220 periodically or periodically detects the quality of the power supply signal, i.e. determines the reason for the failure of the link by the power supply signal, and the corresponding downlink channel quality or downlink signal quality of the downlink, i.e. determines the reason for the failure of the downlink. That is, in this case, the link on which the power supply signal is located may be the above-described target link, or the downlink may be the above-described target link.

Illustratively, as shown in fig. 1C, terminal device 310 may power terminal device 320 and terminal device 310 may transmit scheduling information to terminal device 320 over a side-link, in which case the link on which the power signal generated by terminal device 310 is located may be the same link as the side-link. There may be two scenarios: scenario one, terminal device 320 cannot receive the scheduling information, when terminal device 320 considers a sidelink failure, wherein the reason for the sidelink failure may be related to the power signal quality, or to the sidelink channel quality corresponding to the sidelink or the reference signal quality transmitted on the sidelink channel. Thus, the terminal device 320 needs to determine the cause of the side-link failure. Scenario two, terminal device 320 periodically or periodically detects the powered signal quality, as well as the corresponding downlink channel quality or downlink signal quality for the side downlink.

Illustratively, as shown in fig. 1D, the first device 430 may power the terminal device 420, and the terminal device 410 may transmit scheduling information to the terminal device 420 through a side uplink, in which case the link on which the power signal generated by the first device 430 is located is not the same link as the side uplink. There may be two scenarios: scenario one, terminal device 420, cannot receive the scheduling information when the terminal device considers a sidelink failure, wherein the reason for the sidelink failure may be related to the power signal quality or to the sidelink channel quality corresponding to the sidelink or the reference signal quality transmitted on the sidelink channel. Thus, the terminal device 420 needs to determine the cause of the side-link failure. In scenario two, the terminal device 420 periodically or periodically detects the quality of the power supply signal, i.e. determines the reason for the failure of the link by the power supply signal, and the quality of the sidelink channel corresponding to the sidelink or the quality of the reference signal transmitted on the sidelink channel, i.e. determines the reason for the failure of the sidelink. That is, in this case, the link on which the power supply signal is located may be the above-described target link, or the side link may be the above-described target link.

In summary, the reason for failure of the target link is related to the quality of the energizing signal generated by the first device. Alternatively, the failure cause of the target link may be related to a first channel quality or a first signal quality corresponding to the target link.

It should be appreciated that if the target link is a downlink, then the first channel is the downlink corresponding downlink channel. The downlink channel may be a downlink control channel, such as a physical downlink control channel (Physical Downlink Control Channel, PDCCH), or a downlink control channel similar to the PDCCH; the downlink channel may also be a downlink data channel, such as a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), or a downlink data channel similar to the PDSCH, which is not limited by the present application.

It should be appreciated that if the target link is a sidelink, then the first channel is the sidelink corresponding to the sidelink. The sidelink channel may be a sidelink control channel or a sidelink data channel, and in summary, the application is not limited to the sidelink channel.

As described above, the failure cause of the target link may be related to the first channel quality or the first signal quality corresponding to the target link. The terminal device needs to detect the first channel quality or the first signal quality.

In some implementations, the terminal device detects the quality of the first channel at the physical layer, and obtains the measurement result of the first channel when the evaluation time requirement is satisfied. And the terminal equipment reports the measurement result of the first channel to a higher layer through a physical layer. The terminal device starts a timer and a counter under high-level control. If the measurement result of the first channel is smaller than or equal to the measurement threshold, or the average value of the measurement results of the plurality of first channels is smaller than or equal to the measurement threshold, the terminal equipment increases the counter by one. If the value of the counter reaches the counting threshold within the timing range of the timer, the terminal equipment determines that the failure reason of the target link is related to the first channel quality corresponding to the target link.

In other implementations, the terminal device detects the quality of the first signal at the physical layer, and obtains the measurement result of the first signal when the evaluation time requirement is satisfied. And the terminal equipment reports the measurement result of the first signal to a high layer through a physical layer. The terminal device starts a timer and a counter under high-level control. If the measurement result of the first signal is smaller than or equal to the measurement threshold, or the average value of the measurement results of the plurality of first signals is smaller than or equal to the measurement threshold, the terminal equipment increases the counter by one. If the value of the counter reaches the counting threshold in the timing range of the timer, the failure reason of the target link of the terminal equipment is related to the first signal quality corresponding to the target link.

In some implementations, the higher layer described above may be, but is not limited to, a medium access control (Medium Access Control, MAC) layer of the terminal device.

It will be appreciated that since the first signals may be periodically transmitted signals, there may be one or more first signals within the evaluation time requirement, one first channel for each first signal, based on which the measurement result refers to the measurement result of the one first signal or the one first channel if one first signal is present under the evaluation time requirement. If there are a plurality of first signals under the evaluation time requirement, the measurement result refers to an average value of the measurement results of the plurality of first signals or an average value of the measurement results of the plurality of first channels.

In some implementations, the measurement of the first channel is any one of, but not limited to: signal received power (Reference Signal Receiving Power, RSRP), signal received quality (Reference Signal Receiving Quality, RSRQ), signal power strength (Received Signal Strength Indication, RSSI), signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR) of the first channel.

In some implementations, the first signal is any one of, but not limited to: demodulation reference signal (Demodulation Reference Signal, DMRS), synchronization signal block (Synchronization Signal Block, SSB), tracking reference signal (Tracking Reference Signal, TRS), channel state information-reference signal (Channel-State Information Reference Signal, CSI-RS), pilot sequence with auto-correlation properties.

In some implementations, the measurement of the first signal is any one of, but not limited to: RSRP, RSRQ, RSSI, SINR of the first signal.

In some implementations, the measurement threshold is specifically configured or specifically predefined for the type to which the terminal device belongs, or specifically configured or specifically predefined for the terminal device by the network device, or configured or predefined for all terminal devices or all types of terminal devices by the network device, which is not limited in this regard by the present application.

In some implementations, the measurement threshold corresponding to the first signal may be a result of a conversion of a block error rate (Block Error Ratio, BLER) corresponding to the assumed first channel, for example: the measurement threshold corresponding to the first signal is a reduced result of the hypothesized BLER of the PDCCH. It should be appreciated that because the true BLER of PDCCH transmission is not directly available, the terminal device derives the corresponding possible BLER from the measured signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR), and thus becomes the hypothesized BLER of the PDCCH.

In some implementations, the timing range is specifically configured or specifically predefined for the type to which the terminal device belongs, or specifically configured or specifically predefined for the terminal device by the network device, or configured or predefined for all terminal devices or all types of terminal devices by the network device, which the present application is not limited in this regard.

In some implementations, the count threshold is specifically configured or specifically predefined for the type of terminal device, or specifically configured or specifically predefined for the network device, or configured or predefined for all terminal devices or all types of terminal devices by the network device, which the present application is not limited in this regard.

As described above, the failure cause of the target link may be related to the quality of the energizing signal generated by the first device. The terminal device needs to detect the energizing signal quality:

in one implementation, if the power supply signal quality is below a power supply threshold, the terminal device determines that the failure cause of the target link is related to the power supply signal quality generated by the first device.

In some implementations, the energy supply threshold is specifically configured or specifically predefined for the type to which the terminal device belongs, or specifically configured or specifically predefined for the network device, or configured or predefined for all terminal devices or all types of terminal devices by the network device, which the present application is not limited in this regard.

In some implementations, if the failure cause of the target link is related to a first channel quality or a first signal quality corresponding to the target link, the request corresponding to the failure cause of the target link is a target link failure recovery request. The target link failure recovery request is used to request to recover the target link, and it should be understood that the recovered target link may not be the same link as the failed target link, but may also be the same link, depending on whether the network device allocates the same resources as the failed target link for the recovered target link, if so, the recovered target link may be the same link as the failed target link, and if not, the recovered target link may not be the same link as the failed target link.

In some implementations, the target link failure recovery request is carried in any one of, but is not limited to: physical random access channel (Physical Random Access Channel, PRACH), PRACH-like channel (PRACH-like), physical uplink control channel (Physical Uplink Control Channel, PUCCH), sequences with auto-correlation properties.

It should be understood that PRACH-like channels refer to mechanisms that employ PRACH-like structures, but differ in some parameters, e.g., different from PRACH length.

It should be understood that, when the target link failure recovery request is carried in the PRACH, it means that the terminal device triggers a random access procedure when the target link fails, where the random access procedure may be a contention-based random access procedure or a non-contention-based random access procedure.

It should be appreciated that when the target link failure recovery request is carried in PUCCH, the target link failure recovery request corresponds to requesting the second device to allocate resources to retransmit the scheduling information, i.e. the target link failure recovery request is a scheduling request (Scheduling Request, SR).

In some implementations, if the failure cause of the target link relates to the quality of the power supply signal generated by the first device, the request corresponding to the failure cause of the target link is a power supply control request. Wherein the energy supply control request is used for controlling the energy supply condition of the terminal equipment.

In some implementations, the energy supply control request is used to implement at least one of, but not limited to:

(1) The energizing signal power to the terminal device is increased.

(2) If the first device periodically supplies power to the terminal device, the power supply period of the first device is shortened.

(3) Increasing the density or frequency of the energizing signal generated by the first device.

(4) The bandwidth to the energizing signal is increased.

It should be understood that item (2) is for the first device to be periodically powered to the terminal device, whereas item (3) may be for the first device to be non-periodically powered to the terminal device, or for the first device to be periodically powered to the terminal device, and if it is for the first device to be periodically powered to the terminal device, item (3) may be understood as being equivalent to item (2).

In some implementations, the energy supply control request is for switching the energy supply of the terminal device.

For example, as shown in fig. 1A, when the terminal device 120 determines that the failure cause of the target link is related to the quality of the power supply signal generated by the network device 110, the network device 110 may send a power supply control request to the network device 110, where the network device 110 may search for a device that can supply power to the terminal device 120, and switch the power supply of the terminal device 120 from the network device 110 to the searched device.

For example, as shown in fig. 1B, when the terminal device 220 determines that the failure cause of the target link is related to the quality of the power supply signal generated by the first device 230, the network device 210 may send a power supply control request to the network device 210, where the network device 210 may search for a device that can supply power to the terminal device 220, and switch the power supply of the terminal device 220 from the first device 230 to the searched device.

For example, as shown in fig. 1C, when the terminal device 320 determines that the failure cause of the target link is related to the quality of the power supply signal generated by the terminal device 310, the terminal device 320 may send a power supply control request to the terminal device 320, where the terminal device 310 may search for a device that can supply power to the terminal device 320, and switch the power supply of the terminal device 320 from the terminal device 310 to the searched device.

For example, as shown in fig. 1D, when the terminal device 420 determines that the failure cause of the target link is related to the quality of the power supply signal generated by the first device 430, a power supply control request may be sent to the terminal device 410, and at this time, the terminal device 410 may search for a device that can supply power to the terminal device 420, and switch the power supply of the terminal device 420 from the first device 430 to the found device.

It should be understood that the second device may search for the energy supply device to be switched by the terminal device in the following implementation manner, but is not limited to this:

in one implementation manner, the terminal device selects M target energy supply devices from N energy supply devices, where N is an integer greater than 1 and M is a positive integer. Accordingly, the energy supply control request includes: identification of M target energy devices. After the terminal device sends the energy supply control request corresponding to the failure reason of the target link to the second device, the method further comprises: and the terminal equipment receives the indication information sent by the second equipment. The indication information is used for indicating the terminal equipment to switch to one of M target energy supply equipment. The terminal device switches the energy source from the first device to the target energy supply device indicated by the indication information.

In a second implementation, the energy supply control request includes: and (3) identifying N energy supply devices, wherein N is an integer greater than 1. After the terminal device sends the energy supply control request corresponding to the failure reason of the target link to the second device, the method further comprises: and the terminal equipment receives the indication information sent by the second equipment. The indication information is used for indicating the terminal device to switch to one of the N energy supply devices. The terminal device switches the energy source from the first device to the energy source device indicated by the indication information.

Description is made for the first realizable mode:

in some implementations, the terminal device may randomly select M target energy supply devices among the N energy supply devices, or the terminal device may select M target energy supply devices closest to the N energy supply devices. Alternatively still, the terminal device may obtain capability information of the N energy supply devices, for example: the terminal equipment can select M target energy supply equipment with the strongest capability from N energy supply equipment, and the like, and in a word, the application does not limit how the terminal equipment selects the M target energy supply equipment.

In some implementations, after the second device obtains the identifiers of the M target energy supply devices, the second device may randomly select one target energy supply device from the M target energy supply devices and instruct the terminal device, or the second device may select one target energy supply device closest to the terminal device from the M target energy supply devices and instruct the terminal device. Alternatively still, the second device may obtain capability information of M target energy providing devices, for example: power parameters, etc., the second device may select one target energy supply device with the strongest capability from the M target energy supply devices, etc., in short, the present application does not limit how the second device selects one target energy supply device.

Description is made for the second realizable mode:

in some implementations, after the second device obtains the N identifications of the energy supply devices, the second device may randomly select one target energy supply device from the N energy supply devices and instruct the terminal device, or the second device may select one target energy supply device closest to the terminal device from the N energy supply devices and instruct the terminal device. Alternatively still, the second device may obtain capability information of N powered devices, for example: power parameters, etc., the second device may select one target energy supply device with the strongest capability from the N energy supply devices, etc., in short, the present application does not limit how the second device selects one target energy supply device.

In some implementations, the target energy device that the network device ultimately selects may be any of, but is not limited to: wireless cellular base station, wireless relay, other terminal devices. The other terminal device may be, but not limited to, a sidestream relay device.

In some implementations, the energy supply control request is carried in any one of, but not limited to: uplink control information (Uplink Control Information, UCI), known PRACH, known random sequence, uplink medium access control (Medium Access Control Control Element, MAC CE).

As described above, there is a correspondence between the failure cause of the target link and the above-described request, for example: if the failure cause of the target link is related to the first channel quality or the first signal quality corresponding to the target link, the request corresponding to the failure cause of the target link is a target link failure recovery request. If the failure cause of the target link is related to the quality of the power supply signal generated by the first device, the request corresponding to the failure cause of the target link is a power supply control request. Therefore, when the terminal device sends only the failure cause of the target link to the second device, the second device may perform corresponding processing according to the mapping relationship between the failure cause of the target link and the request, for example: if the failure reason of the target link is related to the first channel quality or the first signal quality corresponding to the target link, the second device performs a random access procedure to reallocate the resources. For another example: if the failure cause of the target link relates to the quality of the energizing signal generated by the first device, the second device may perform at least one of: increasing the power of an energy supply signal to the terminal equipment; if the first equipment periodically supplies energy to the terminal equipment, the energy supply period of the first equipment is shortened; increasing the density or frequency of the energizing signal generated by the first device; increasing the bandwidth of the energizing signal; switching the energy source. When the terminal device only requests, the second device may respond to the request accordingly, for example: the request is a target link failure recovery request and the second device performs a random access procedure to reallocate resources. For another example: the request is an energy supply control request, the second device may at least one of: increasing the power of an energy supply signal to the terminal equipment; if the first equipment periodically supplies energy to the terminal equipment, the energy supply period of the first equipment is shortened; increasing the density or frequency of the energizing signal generated by the first device; increasing the bandwidth of the energizing signal; switching the energy source. When the terminal device sends the failure reason of the target link and the corresponding request to the second device, the second device may perform corresponding processing according to the failure reason or the request.

It will be appreciated that the terminal device may determine that the quality of the energizing signal causes the target link to fail, and also that the cause of the failure of the target link is related to the first channel quality or first signal quality corresponding to the target link, if the two target links are the same link, then the second device performs a corresponding process for the target link for both of these reasons, for example: a random access procedure is performed and power supply control is performed. If the two target links are not the same link, the second device performs corresponding processing for both target links for both reasons, respectively.

In some implementations, because the terminal device determines that the target link fails, the terminal device may send an interrupt transmission request to the second device to request the second device to interrupt transmission to the terminal device. Wherein the terminal device may send the interrupt transmission request before or after S620, to which the present application is not limited.

In some implementations, after the second device receives the request for interrupting the transmission, and the request corresponding to the failure cause of the target link and/or the failure cause of the target link, the second device may preferably process the request for interrupting the transmission, that is, preferably interrupt the transmission to the terminal device, and then make corresponding processing for the request corresponding to the failure cause of the target link and/or the failure cause of the target link.

In some implementations, after the terminal device sends the request corresponding to the failure cause of the target link and/or the failure cause of the target link to the second device due to the failure of the target link, considering that the second device needs to make corresponding processing for the request corresponding to the failure cause of the target link and/or the failure cause of the target link, the terminal device may enter an idle state after sending the request corresponding to the failure cause of the target link and/or the failure cause of the target link to the second device, and start a first timer, and if the first timer reaches a timing time, the terminal device stops the backscatter transmission.

In some implementations, when the terminal device determines that the quality of the energizing signal causes the target link to fail, the terminal device sends a request to the second device corresponding to the failure cause of the target link and/or the failure cause of the target link if the terminal device temporarily has sufficient power to send information. If the terminal device does not have sufficient power to transmit information, the terminal device may stop the backscatter transmission and start the second timer. If the second timer reaches the timing time, the terminal device performs back scattering transmission, and transmits a request corresponding to the failure reason of the target link and/or the failure reason of the target link through the back scattering transmission. The back scattering transmission can carry delay information of the terminal equipment for back scattering transmission.

In summary, in the present application, the terminal device may report the target link failure reason and/or the request corresponding to the target link failure reason, so that the second device may perform corresponding processing according to the target link failure reason and/or the request corresponding to the target link failure reason, for example: and reallocating link resources or energy supply control so as to ensure normal data transmission of the terminal equipment.

Fig. 7 is a schematic diagram of a terminal device 700 according to an embodiment of the present application, where the terminal device 700 is powered by a first device, and as shown in fig. 7, the terminal device 700 includes: a processing unit 710 and a communication unit 720, wherein the processing unit 710 is configured to determine a failure cause of the target link. The communication unit 720 is configured to send, to the second device, a request corresponding to the failure cause of the target link and/or the failure cause of the target link.

In some implementations, the failure cause of the target link is related to the quality of the energizing signal generated by the first device. Alternatively, the failure cause of the target link may be related to a first channel quality or a first signal quality corresponding to the target link.

In some implementations, the processing unit 710 is specifically configured to: and detecting the quality of the first channel at the physical layer, and obtaining a measurement result of the first channel under the condition that the evaluation time requirement is met. And reporting the measurement result of the first channel to a higher layer through a physical layer. The timer and counter are started under high level control. If the measurement result of the first channel is smaller than or equal to the measurement threshold, or the average value of the measurement results of the plurality of first channels is smaller than or equal to the measurement threshold, the counter is increased by one. If the value of the counter reaches the counting threshold in the timing range of the timer, determining that the failure reason of the target link is related to the first channel quality corresponding to the target link.

In some implementations, the first channel is a control channel or a data channel.

In some implementations, the measurement of the first channel is any one of: RSRP, RSRQ, RSSI, SINR of the first channel.

In some implementations, the processing unit 710 is specifically configured to: and detecting the quality of the first signal at the physical layer, and obtaining a measurement result of the first signal under the condition that the evaluation time requirement is met. And reporting the measurement result of the first signal to a higher layer through a physical layer. The timer and counter are started under high level control. If the measurement result of the first signal is less than or equal to the measurement threshold, or the average value of the measurement results of the plurality of first signals is less than or equal to the measurement threshold, the counter is incremented by one. If the value of the counter reaches the counting threshold in the timing range of the timer, the failure reason of the target link is related to the first signal quality corresponding to the target link.

In some implementations, the first signal is any one of: DMRS, SSB, TRS, CSI-RS, pilot sequences with auto-correlation properties.

In some implementations, the measurement of the first signal is any one of: RSRP, RSRQ, RSSI, SINR of the first signal.

In some implementations, the measurement threshold is specifically configured or specifically predefined for the type to which the terminal device belongs.

In some implementations, the timing range is specifically configured or specifically predefined for the type to which the terminal device belongs.

In some implementations, the count threshold is specifically configured or specifically predefined for the type to which the terminal device belongs.

In some implementations, the processing unit 710 is specifically configured to: if the quality of the power supply signal is lower than the power supply threshold, the terminal device determines that the failure reason of the target link is related to the quality of the power supply signal generated by the first device.

In some implementations, if the failure cause of the target link is related to a first channel quality or a first signal quality corresponding to the target link, the request corresponding to the failure cause of the target link is a target link failure recovery request. If the failure cause of the target link is related to the quality of the power supply signal generated by the first device, the request corresponding to the failure cause of the target link is a power supply control request.

In some implementations, the energy supply control request is carried in any one of: UCI, known PRACH, known random sequence, upstream MAC CE.

In some implementations, the energy supply control request is for at least one of:

the energizing signal power to the terminal device is increased.

If the first device periodically supplies power to the terminal device, the power supply period of the first device is shortened.

Increasing the density or frequency of the energizing signal generated by the first device.

The bandwidth to the energizing signal is increased.

In some implementations, the processing unit 710 is further configured to select M target energy supply devices from N energy supply devices, where N is an integer greater than 1 and M is a positive integer. Accordingly, the energy supply control request includes: identification of M target energy devices. The communication unit 720 is further configured to receive indication information sent by the second device. The processing unit 710 is further configured to switch the energy source from the first device to the target energy device indicated by the indication information.

In some implementations, the target link failure recovery request is carried in any of the following: PRACH, PRACH-like channel, PUCCH, sequences with auto-correlation properties.

In some implementations, the communication unit 720 is further configured to send an interrupt transmission request to the second device.

In some implementations, the processing unit 710 is also configured to start the first timer. The communication unit 720 is further configured to stop the backscatter transmission if the first timer reaches the timing time.

In some implementations, the communication unit 720 is further configured to stop the backscatter transmission if the cause of failure of the target link is related to the quality of the energizing signal generated by the first device, and the processing unit 710 is further configured to start the second timer. The communication unit 720 is further configured to perform backscatter transmission if the second timer reaches the timing time.

In some implementations, the backscatter transmission carries delay information for the terminal device to perform the backscatter transmission.

In some implementations, the first device is any one of: wireless cellular base station, wireless relay, other terminal devices.

In some implementations, the second device is any one of: wireless cellular base station, wireless relay, other terminal devices.

In some implementations, the target link is a link between the terminal device and the second device.

In some implementations, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The processing unit may be one or more processors.

It should be understood that the terminal device 700 according to the embodiment of the present application may correspond to the terminal device in the method embodiment corresponding to fig. 6, and the foregoing and other operations and/or functions of each unit in the terminal device 700 are respectively for implementing the corresponding flow of the terminal device in the method embodiment corresponding to fig. 6, and are not repeated herein for brevity.

Fig. 8 is a schematic diagram of a second device 800 provided in an embodiment of the present application, where a terminal device is powered by a first device, and the second device 800 includes: and the communication unit 810 is configured to receive a request corresponding to a failure reason of the target link and/or a failure reason of the target link sent by the terminal device.

the energizing signal power to the terminal device is increased.

The bandwidth to the energizing signal is increased.

In some implementations, the energy supply control request includes: and identifying M target energy supply devices, wherein M is a positive integer. The communication unit 810 is further configured to send indication information to the terminal device, where the indication information is used to instruct the terminal device to switch to one of the M target energy supply devices.

In some implementations, the communication unit 810 is further configured to receive an interrupt transmission request sent by the terminal device.

It should be understood that the second device 800 according to the embodiment of the present application may correspond to the second device in the method embodiment corresponding to fig. 6, and the foregoing and other operations and/or functions of each unit in the second device 800 are respectively for implementing the corresponding flow of the second device in the method embodiment corresponding to fig. 6, and are not described herein for brevity.

Fig. 9 is a schematic block diagram of a communication device 900 according to an embodiment of the present application. The communication device 900 shown in fig. 9 comprises a processor 910, from which the processor 910 may call and run a computer program to implement the method in an embodiment of the application.

Optionally, as shown in fig. 9, the communication device 900 may also include a memory 920. Wherein the processor 910 may invoke and run a computer program from the memory 920 to implement the method in the embodiments of the present application.

Wherein the memory 920 may be a separate device from the processor 910 or may be integrated in the processor 910.

Optionally, as shown in fig. 9, the communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

Wherein transceiver 930 may include a transmitter and a receiver. Transceiver 930 may further include antennas, the number of which may be one or more.

Optionally, the communication device 900 may be specifically a second device in the embodiment of the present application, and the communication device 900 may implement a corresponding flow implemented by the second device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 900 may be specifically a terminal device in the embodiment of the present application, and the communication device 900 may implement a corresponding flow implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Fig. 10 is a schematic structural view of an apparatus of an embodiment of the present application. The apparatus 1000 shown in fig. 10 comprises a processor 1010, from which the processor 1010 may call and run a computer program to implement the method in an embodiment of the application.

Optionally, as shown in fig. 10, the apparatus 1000 may further comprise a memory 1020. Wherein the processor 1010 may call and run a computer program from the memory 1020 to implement the methods in embodiments of the present application.

The memory 1020 may be a separate device from the processor 1010 or may be integrated into the processor 1010.

Optionally, the apparatus 1000 may further comprise an input interface 1030. The processor 1010 may control the input interface 1030 to communicate with other devices or chips, and in particular, may obtain information or data sent by the other devices or chips.

Optionally, the apparatus 1000 may further include an output interface 1040. Wherein the processor 1010 may control the output interface 1040 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the apparatus may be applied to the second device in the embodiment of the present application, and the apparatus may implement a corresponding flow implemented by the second device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the apparatus may be applied to a terminal device in the embodiment of the present application, and the apparatus may implement a corresponding flow implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Alternatively, the device according to the embodiment of the present application may be a chip. For example, a system-on-chip or a system-on-chip, etc.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile 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. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is illustrative but not restrictive, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device or a base station in the embodiment of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device or the base station in each method of the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which is not described herein for brevity.

The embodiment of the application also provides a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a network device or a base station in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding flows implemented by the network device or the base station in the methods in the embodiments of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device or a base station in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device or the base station in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. For such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the 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 method of wireless communication, the method being applied to a terminal device, the terminal device being powered by a first device, the method comprising:

the terminal equipment determines the failure reason of the target link;

and the terminal equipment sends the failure reason of the target link and/or a request corresponding to the failure reason of the target link to the second equipment.
The method of claim 1, wherein the cause of failure of the target link relates to a quality of an energizing signal generated by the first device; or,

the failure cause of the target link is related to a first channel quality or a first signal quality corresponding to the target link.
The method according to claim 2, wherein the determining, by the terminal device, a failure cause of the target link comprises:

The terminal equipment detects the quality of the first channel at a physical layer, and obtains a measurement result of the first channel under the condition that the evaluation time requirement is met;

the terminal equipment reports the measurement result of the first channel to a higher layer through the physical layer;

the terminal equipment starts a timer and a counter under the control of the high layer;

if the measurement result of the first channel is smaller than or equal to a measurement threshold, or the average value of the measurement results of a plurality of first channels is smaller than or equal to the measurement threshold, the terminal equipment increases a counter by one;

if the value of the counter reaches a counting threshold within the timing range of the timer, the terminal equipment determines that the failure reason of the target link is related to the first channel quality corresponding to the target link.
A method according to claim 3, wherein the first channel is a control channel or a data channel.
The method according to claim 3 or 4, wherein the measurement result of the first channel is any one of the following: the signal receiving power RSRP, the signal receiving quality RSRQ, the signal power strength RSSI and the signal-to-interference and noise ratio SINR of the first channel.
The method according to claim 2, wherein the determining, by the terminal device, a failure cause of the target link comprises:

the terminal equipment detects the quality of the first signal at a physical layer, and obtains a measurement result of the first signal under the condition that the evaluation time requirement is met;

the terminal equipment reports the measurement result of the first signal to a high layer through the physical layer;

the terminal equipment starts a timer and a counter under the control of the high layer;

if the measurement result of the first signal is smaller than or equal to a measurement threshold, or the average value of the measurement results of a plurality of first signals is smaller than or equal to the measurement threshold, the terminal equipment increases a counter by one;

if the value of the counter reaches a counting threshold within the timing range of the timer, the failure reason of the target link of the terminal equipment is related to the first signal quality corresponding to the target link.
The method of claim 6, wherein the first signal is any one of: demodulation reference signal DMRS, synchronization signal block SSB, tracking reference signal TRS, channel state information-reference signal CSI-RS, pilot sequence with auto-correlation properties.
The method according to claim 6 or 7, wherein the measurement of the first signal is any one of: RSRP, RSRQ, RSSI, SINR of the first signal.
A method according to any of claims 3-8, characterized in that the measurement threshold is specifically configured or specifically predefined for the type to which the terminal device belongs.
The method according to any of claims 3-9, characterized in that the timing range is specifically configured or specifically predefined for the type to which the terminal device belongs.
The method according to any of claims 3-10, characterized in that the count threshold is specifically configured or specifically predefined for the type to which the terminal device belongs.
The method according to claim 2, wherein the determining, by the terminal device, a failure cause of the target link comprises:

if the power supply signal quality is lower than a power supply threshold, the terminal equipment determines that the failure reason of the target link is related to the power supply signal quality generated by the first equipment.
The method according to any of claims 2-12, wherein the request corresponding to the failure cause of the target link is a target link failure recovery request if the failure cause of the target link relates to a first channel quality or a first signal quality corresponding to the target link;

And if the failure reason of the target link is related to the quality of the energy supply signal generated by the first equipment, the request corresponding to the failure reason of the target link is an energy supply control request.
The method of claim 13, wherein the energy supply control request is carried in any one of: uplink control information UCI, a known physical random access channel PRACH, a known random sequence, and an uplink medium access control MAC CE.
The method according to claim 13 or 14, wherein the energy supply control request is for at least one of:

increasing the power of an energy supply signal to the terminal equipment;

if the first equipment periodically supplies energy to the terminal equipment, the energy supply period of the first equipment is shortened;

increasing the density or frequency of the energizing signal generated by the first device;

increasing the bandwidth of the energizing signal.
A method according to claim 13 or 14, the energy supply control request being for switching an energy supply of the terminal device.
The method as recited in claim 16, further comprising: if the failure cause of the target link is related to the quality of the energy supply signal generated by the first device, before the terminal device sends the energy supply control request corresponding to the failure cause of the target link to the second device, the method further comprises:

The terminal equipment selects M target energy supply equipment from N energy supply equipment, wherein N is an integer greater than 1, and M is a positive integer;

accordingly, the energy supply control request includes: identification of the M target energy supply devices;

after the terminal device sends the energy supply control request corresponding to the failure reason of the target link to the second device, the method further comprises:

the terminal equipment receives the indication information sent by the second equipment;

the terminal device switches energy sources from the first device to the target energy supply device indicated by the indication information.
The method of claim 13, wherein the target link failure recovery request is carried in any of: PRACH, PRACH-like channel, physical uplink control channel PUCCH, and sequences with auto-correlation properties.
The method of any one of claims 1-18, further comprising:

and the terminal equipment sends an interrupt transmission request to the second equipment.
The method according to any one of claims 1-18, wherein after the terminal device sends the request corresponding to the failure cause of the target link and/or the failure cause of the target link to the second device, the method further comprises:

The terminal equipment starts a first timer;

and if the first timer reaches the timing time, stopping the back scattering transmission by the terminal equipment.
The method according to any one of claims 1-18, wherein after the terminal device sends the request corresponding to the failure cause of the target link and/or the failure cause of the target link to the second device, the method further comprises:

if the failure reason of the target link is related to the quality of the energy supply signal generated by the first equipment, stopping the back scattering transmission by the terminal equipment, and starting a second timer;

and if the second timer reaches the timing time, the terminal equipment performs back scattering transmission.
The method of claim 21, wherein the backscatter transmission carries delay information for the backscatter transmission by the terminal device.
The method of any one of claims 1-22, wherein the first device is any one of: wireless cellular base station, wireless relay, other terminal devices.
The method of any one of claims 1-23, wherein the second device is any one of: wireless cellular base station, wireless relay, other terminal devices.
The method of any one of claims 1-24, wherein the first device is the same or different from the second device.
The method according to any of claims 1-25, wherein the target link is a link between the terminal device and the second device.
A method of wireless communication, the method being applied to a second device, a terminal device being powered by a first device, the method comprising:

and the second equipment receives the failure reason of the target link and/or a request corresponding to the failure reason of the target link, which are sent by the terminal equipment.
The method of claim 27, wherein the cause of failure of the target link relates to a quality of an energizing signal generated by the first device; or,

the failure cause of the target link is related to a first channel quality or a first signal quality corresponding to the target link.
The method of claim 28, wherein the first channel is a control channel or a data channel.
The method of claim 28, wherein the first signal is any one of: DMRS, SSB, TRS, CSI-RS, pilot sequences with auto-correlation properties.
The method according to any of claims 28-30, wherein the request corresponding to the failure cause of the target link is a target link failure recovery request if the failure cause of the target link relates to a first channel quality or a first signal quality corresponding to the target link;

and if the failure reason of the target link is related to the quality of the energy supply signal generated by the first equipment, the request corresponding to the failure reason of the target link is an energy supply control request.
The method of claim 31, wherein the energy supply control request is carried in any one of: UCI, known PRACH, known random sequence, upstream MAC CE.
The method of claim 31 or 32, wherein the energy supply control request is for at least one of:

increasing the power of an energy supply signal to the terminal equipment;

if the first equipment periodically supplies energy to the terminal equipment, the energy supply period of the first equipment is shortened;

increasing the density or frequency of the energizing signal generated by the first device;

increasing the bandwidth of the energizing signal.
A method according to claim 31 or 32, the energy supply control request being for switching an energy supply of the terminal device.
The method of claim 34, wherein the energy supply control request comprises: the identification of M target energy supply devices, wherein M is a positive integer; the method further comprises the steps of:

the second device sends indication information to the terminal device, wherein the indication information is used for indicating the terminal device to switch to one of the M target energy supply devices.
The method of claim 31, wherein the target link failure recovery request is carried in any of: PRACH, PRACH-like channel, PUCCH, sequences with auto-correlation properties.
The method according to any one of claims 27-36, further comprising:

and the second equipment receives the interrupt transmission request sent by the terminal equipment.
The method of any one of claims 27-37, wherein the first device is any one of: wireless cellular base station, wireless relay, other terminal devices.
The method of any one of claims 27-38, wherein the second device is any one of: wireless cellular base station, wireless relay, other terminal devices.
The method of any one of claims 27-39, wherein the first device is the same as or different from the second device.
The method of any of claims 27-40, wherein the target link is a link between the terminal device and the second device.
A terminal device, the terminal device being powered by a first device, comprising:

the processing unit is used for determining the failure reason of the target link;

and the communication unit is used for sending the failure reason of the target link and/or a request corresponding to the failure reason of the target link to the second equipment.
A second device, comprising:

and the communication unit is used for receiving the failure reason of the target link and/or the request corresponding to the failure reason of the target link, which are sent by the terminal equipment.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 1 to 26.
A second device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 27 to 41.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 26.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 27 to 41.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 26.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 27 to 41.
A computer program product comprising computer program instructions which cause a computer to perform the method of any one of claims 1 to 26.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 27 to 41.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 1 to 26.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 27 to 41.