CN117203899A

CN117203899A - Wireless communication method and device

Info

Publication number: CN117203899A
Application number: CN202180097510.3A
Authority: CN
Inventors: 贺传峰
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2023-12-08
Also published as: WO2023283820A1

Abstract

The embodiment of the application provides a wireless communication method and equipment, wherein the method comprises the following steps: the terminal equipment receives a first signal, wherein the first signal comprises indication information for indicating a time slot format; wherein the terminal device is powered by the communication device. Thus, for the passive terminals described above, even some semi-passive terminals or active terminals, such terminal devices may acquire the slot format.

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

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 a time division duplex (Time Division Duplex, TDD) system, the communication device cannot receive and transmit simultaneously, so the terminal device needs to acquire the slot format to determine the uplink symbol, the downlink symbol, the flexible symbol, etc. in the slot, while for the above passive terminals, even some semi-passive terminals or active terminals, it may not be possible to use battery power in some cases, but it needs to be powered by other communication devices, so how the terminal device acquires the slot format is a technical problem to be solved in the present application in this case.

Disclosure of Invention

The embodiment of the application provides a wireless communication method and equipment, so that aiming at the passive terminal, even some semi-passive terminals or active terminals, the terminal equipment can acquire a time slot format.

In a first aspect, a wireless communication method is provided, including: the terminal equipment receives a first signal, wherein the first signal comprises indication information for indicating a time slot format; wherein the terminal device is powered by the communication device.

In a second aspect, there is provided a wireless communication method comprising: the first communication device generating a first signal; the first communication device sends a first signal to the terminal device; wherein the first signal includes indication information for indicating a slot format; the terminal device is powered by the first communication device.

In a third aspect, a wireless communication method is provided, including: the second communication device generating a first signal; the second communication device sends a first signal to the terminal device; wherein the first signal includes indication information for indicating a slot format; the terminal device is powered by the second communication device.

In a fourth 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 fifth aspect, a communication device is provided that includes a processor and a memory. The memory is for storing a computer program and the processor is for invoking and running the computer program stored in the memory for performing the method of the second aspect, the third aspect or an implementation manner thereof.

In a sixth aspect, there is provided an apparatus for implementing the method in the first to third aspects 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 to third aspects or implementations thereof described above.

In a seventh aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to perform the methods of the first to third aspects or implementations thereof.

In an eighth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the methods of the first to third aspects or implementations thereof.

A ninth aspect provides a computer program which, when run on a computer, causes the computer to perform the methods of the first to third aspects or implementations thereof described above.

By means of the technical solution provided by the present application, for the above-mentioned passive terminals, even some semi-passive terminals or active terminals, which may not be powered by a battery in some cases, the communication device may send a first signal to such terminal devices, which signal includes: indication information for indicating the slot format so that such terminal devices acquire the slot format.

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. 2 is a schematic diagram of an RFID system provided by 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 a diagram of a TDD uplink and downlink configuration pattern;

fig. 7 is a schematic diagram of another TDD uplink and downlink configuration pattern;

fig. 8 is a flowchart of a wireless communication method according to an embodiment of the present application;

FIG. 9 is a schematic diagram of Manchester encoding of indication information according to an embodiment of the present application;

fig. 10 is a schematic diagram of an indication information indicating a slot format according to an embodiment of the present application;

Fig. 11 is a schematic diagram of an indication information indicating a slot format according to another embodiment of the present application;

fig. 12 is a schematic diagram of a terminal device 1200 according to an embodiment of the present application;

fig. 13 is a schematic diagram of a communication device 1300 according to an embodiment of the present application;

fig. 14 is a schematic diagram of a communication device 1400 according to an embodiment of the present application;

fig. 15 is a schematic block diagram of a communication device 1500 according to an embodiment of the present application;

fig. 16 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.

It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

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, cellular internet of things, cellular passive internet of things or other communication systems, and so forth.

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.

In some implementations, the communication system in the embodiments 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) networking 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 first communication device 110, which first communication device 110 may be a device that communicates with a terminal device 120 (otherwise referred to as a communication terminal, terminal). And the first communication device 110 may power the terminal device 120, alternatively the first communication device 110 may be a network device that may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area. Alternatively, the first communication device 110 may be a terminal device other than the terminal device 120, which the present application is not limited to.

Fig. 1A illustrates a first communication device and a terminal device, and in some implementations, the communication system 100 may include a plurality of communication devices, which may be network devices, and each network device may include other numbers of terminal devices within a coverage area of the network device, which is not limited by embodiments of the present application.

In some implementations, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited in this 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 first communication device 210, a second communication device 220, and a terminal device 230, wherein the first communication device 210, the second communication device 220 may each be in communication with the terminal device 230, and the second communication device 220 may power the terminal device 230, or the second communication device 220 may power the terminal device 230 in an upstream time slot, and the first communication device 210 may power the terminal device 230 in a downstream time slot. The uplink time slot and the downlink time slot may be uplink time slots and downlink time slots configured by the first communication device 210 for the terminal device 230. Alternatively, the first communication device 210 may be a network device that may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area. Alternatively, the first communication device 210 may be a terminal device other than the terminal device 230, to which the present application is not limited. The second communication device 220 may also be a network device that may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area. Alternatively, the second communication device 220 may be a terminal device other than the terminal device 230, to which the present application is not limited.

Fig. 1B illustrates two communication devices and a terminal device, and in some implementations, the communication system 200 may include a plurality of communication devices, which may be network devices, and each network device may include other numbers of terminal devices within a coverage area, which is not limited by embodiments of the present application.

In some implementations, the communication system 200 may further include a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

The embodiments of the present application have been described in connection with a terminal device and a communication device, which as mentioned above may be a network 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.

RFID is a wireless communication technology. Fig. 2 is a schematic diagram of an RFID system provided by the present application, and as shown in fig. 2, the most basic RFID system is composed of two parts, namely an electronic TAG (TAG) and a Reader/Writer. Electronic tag: the electronic tag consists of a coupling component and a chip, and each electronic tag has unique electronic codes and is placed on a measured target so as to achieve the purpose of marking the target object. A reader/writer: the electronic tag can read information on the electronic tag, write information on the electronic tag, and provide energy required by communication for the electronic tag. As shown in fig. 2. After the electronic tag enters the electromagnetic field, the radio frequency signal sent by the reader-writer is received, the passive electronic tag or the passive electronic tag utilizes the energy obtained by the electromagnetic field generated in the space to transmit the information stored by the electronic tag, and the reader-writer reads the information and decodes the information, so that the electronic tag is identified.

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 by the present application, as shown in fig. 3, a zero-power device, i.e. a backscatter tag, receives a carrier signal sent by a backscatter reader, and uses a Radio Frequency (RF) energy acquisition module to acquire energy, i.e. the energy acquisition module, to further power a low-power processing module, i.e. the logic processing module in fig. 3, to modulate the carrier signal, and to perform backscatter.

It will be appreciated that since the carrier signal transmitted by the backscatter reader described above is used to provide energy to the backscatter tag, this carrier signal is also referred to as an energizing signal, and that the energizing signal to which the present application relates is also referred to as a carrier signal in some cases, and the carrier signal is also referred to as an energizing signal in some cases.

It should be appreciated that the backscatter communication principle illustrated in fig. 3 is illustrated by a backscatter tag and a backscatter reader, and that virtually any device having backscatter communication functionality, as well as a device that transmits a carrier signal, for providing energy, 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

Load modulation is a method frequently used by electronic tags to transmit data to a reader-writer. The load modulation is to adjust the electric parameters of the electronic tag oscillation circuit according to the beat of the data stream, so that the impedance and the phase of the electronic tag 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.

Flexible time slots in NR systems

Flexible slot formats are introduced in NR systems, i.e. Downlink (DL) symbols, flexible (Flexible) symbols and Uplink (Uplink) symbols are included in one slot. Wherein the flexible symbol has the following characteristics:

(1) Flexible symbols represent the uncertainty of the direction of the symbol, which can be changed to downlink or uplink symbols by other signaling;

(2) Flexible symbols may also represent symbols reserved for future use for forward compatibility;

(3) The flexible symbol is used for receiving and transmitting conversion of the terminal, and is similar to a Guard Period (GP) symbol in an LTE TDD system, and the terminal completes receiving and transmitting conversion in the symbol;

in the NR system, a plurality of flexible time slot formats are defined, including a full downlink time slot, a full uplink time slot, a full flexible time slot, and time slot formats with different downlink symbols, uplink symbols and flexible symbol numbers, wherein the different time slot formats respectively correspond to one time slot format index.

NR systems support a variety of ways to configure slot formats, including: the time slot format is configured through semi-static uplink and downlink configuration signaling and the time slot format is configured through dynamic uplink and downlink indication signaling, wherein the semi-static uplink and downlink configuration signaling comprises tdd-UL-DL-configuration Common and tdd-UL-DL-configuration decoded, and the dynamic uplink and downlink indication signaling is downlink control signaling (Downlink control information, DCI) with the format of 2-0.

The network device configures a common slot format by transmitting tdd-UL-DL-configuration command signaling, i.e. a slot format applicable to all terminals in the cell, which may configure one or two patterns (patterns), one for each period. In each pattern, the network device may configure the slot format in the pattern, mainly including the following parameters: reference subcarrier spacing (mu) _ref ) Period P, i.e. the period parameter of the pattern, in units of ms, number of downlink time slots (d _slots ) Number of downlink symbols (d _sym ) Number of uplink slots (u) _slots ) Number of uplink symbols (u) _sym )。

The total number S of time slots included in the period can be determined according to the reference subcarrier spacing and the period, the first d in the S time slots _slots The time slots represent the full downlink time slots, and the previous d in the next time slot of the last full downlink time slot _sym The symbols represent downlink symbols; last u of the S time slots _slots The time slots represent all uplink time slots, and the last u in the previous time slot of the first all uplink time slot _sym The symbols represent uplink symbols; the remaining symbols in the period represent flexible symbols. Thus, in one pattern period, the frame structure form configured in the whole appears to be that the downlink time slot or symbol is in front, the uplink time slot or symbol is in back, and the flexible time slot or symbol is in the middle. The terminal can determine the time slot format in one period according to the tdd-UL-DL-configurationCommon, and can determine the time slot formats of all time slots by repeating the period P in the time domain.

Fig. 6 is a schematic diagram of a TDD uplink and downlink configuration pattern, as shown in fig. 6, showing a slot configuration of a pattern with a period p=5 ms, and for a 15kHz subcarrier spacing, the pattern period includes 5 slots, where d _slots ＝1，d _sym ＝2，u _slots ＝1，u _sym =6, meaning that in a period of 5ms, the 1 st slot is a full downlink slot, the first 2 symbols in the 2 nd slot are downlink symbols, the last slot is a full uplink slot, the last 6 symbols in the penultimate slot are uplink symbols, the remaining symbols are flexible symbols, and the pattern is repeated periodically in the time domain at 5 ms.

the tdd-UL-DL-configuration decoded signaling can only change the direction in which the tdd-UL-DL-configuration command is configured as a flexible symbol. If the tdd-UL-DL-configuration command configuration signaling has been configured as a downlink symbol, it cannot be modified to an uplink symbol by the tdd-UL-DL-configuration decoded signaling. If the tdd-UL-DL-configuration command configuration signaling has been configured as an uplink symbol, it cannot be modified to a downlink symbol by the tdd-UL-DL-configuration decoded signaling.

For example, fig. 7 is a schematic diagram of another TDD uplink and downlink configuration pattern, where the network device configures a slot format of one pattern through TDD-UL-DL-configuration command as shown in fig. 7, and on the basis of this, the network device configures a slot format of two slots through TDD-UL-DL-configuration command, as shown in fig. 7, and the two slots are slot 1 and slot 2 in a 5ms period, respectively:

Time slot 1: the number of downlink symbols of the tdd-UL-DL-configured dedicatedly signaling configuration time slot 1 is 2, and the number of uplink symbols is 4;

time slot 2: the number of downlink symbols of the tdd-UL-DL-configured signaling configuration slot 2 is 3, and the number of uplink symbols is 2.

On the basis of configuring the slot format through the semi-static uplink and downlink configuration information, the network equipment can dynamically configure the slot format of each slot through slot format indication information (Slot Format Indicator, SFI), namely DCI with format 2-0, and scrambles with SFI-radio network temporary identifiers (RNTI Radio Network Tempory Identity, RNTI). The SFI can only configure the semi-static uplink and downlink configuration information to be configured as the direction of the flexible symbol, and cannot change the direction of the semi-static configuration information configured as the uplink symbol or the downlink symbol.

The SFI indicates that the slot formats of multiple serving cells can be configured simultaneously, the network device configures a cell index through radio resource control (Radio Resource Control, RRC) signaling, and the position of the start bit of a slot format combination identifier (slotformat combination id) corresponding to the cell index in the DCI of format 2-0. The network device configures a plurality of slot format combinations (slotgformattcomingids), each slot format combination corresponding to one identification information (slotgformattcomingid) and a slot format configuration of a set of slots, each slot format configuration being used to configure a slot format of one slot.

The SFI includes an SFI index (SFI-index) that corresponds to the slotFormat Combination Id from which a set of slot formats can be determined. The SFI indicated slot format is applicable in consecutive slots starting from the slot carrying the SFI signaling and the number of SFI indicated slots is greater than or equal to the monitoring period of the physical downlink control channel (Physical Downlink Control Channel, PDCCH) carrying the SFI. If a slot is signaled by two SFIs to indicate the slot format, the slot format of this slot signaled by two SFIs should be the same.

When the network equipment configures the time slot format of a service cell, it configures a subcarrier interval at the same time, i.e. SFI reference subcarrier interval mu _SFI The subcarrier spacing is smaller than or equal to the subcarrier spacing mu of the serving cell monitoring SFI signaling, i.e. mu is larger than or equal to mu _SFI The slot format of one slot indicated by the SFI is applicable toEach downlink or uplink or flexible symbol of the SFI signaling indication corresponds toSuccessive downlink or uplink symbols or flexible symbols.

For TDD systems, the communication device cannot receive and transmit simultaneously, and therefore NR introduces a flexible slot format as above. For the passive terminal, even some semi-passive terminals or active terminals may not be powered by a battery in some cases, but need to be powered by other communication devices, so how the terminal device obtains the slot format is a technical problem to be solved in the present application in this case.

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

fig. 8 is a flowchart of a wireless communication method according to an embodiment of the present application, which may be performed by a terminal device having a backscatter communication function. The terminal device may be a zero power device, such as a passive terminal, or even a semi-passive terminal, or may be performed by a non-zero power device, i.e. a normal device, but the normal terminal may in some cases perform backscatter communication. As shown in fig. 8, the method includes the steps of:

s810: the terminal device receives a first signal including indication information for indicating a slot format. Wherein the terminal device is powered by the communication device.

It should be understood that the communication device powering the terminal device may be a first communication device which is a communication device where the terminal device performs data transmission according to a slot format. The first communication device may be a network device or a terminal device, but is not limited thereto. Alternatively, the communication device powering the terminal device may be a second communication device being a different communication device than the first communication device. The second communication device may be a network device or a terminal device, but is not limited thereto. Alternatively, the communication device that supplies power to the terminal device may be other communication devices than the first communication device and the second communication device, which is not limited by the present application.

It should be understood that the communication device for generating the first signal may be the same communication device as the communication device for powering the terminal device, or may be a different communication device, which is not limited in this respect by the present application.

In some implementations, the communication device configured to generate the first signal may use the following coding method for the indication information, but is not limited thereto: pulse-gap coding (PIE), inverse non-return to zero coding, manchester (Manchester) coding, unipolar return to zero (unipole RZ) coding, differential Biphase (DBP) coding, miller (Miller) coding, and differential coding. For example, the communication device may employ Manchester (Manchester) encoding of the indication information, as shown in FIG. 9.

It should be understood that the communication device configured to generate the first signal encodes the indication information to form a code sequence corresponding to the indication information, where different code sequences correspond to different indication information, that is, there is a mapping relationship between the code sequence and the indication information.

It will be appreciated that the first signal is a radio frequency carrier signal and the communication device for generating the first signal may be adapted to carry the encoded indication information by modulating the carrier signal. Common modulation schemes include, but are not limited to: amplitude keying (Amplitude Shift Keying, ASK), frequency shift keying (Frequency Shift Keying, FSK), and phase shift keying (Phase Shift Keying, PSK), etc. ASKs such as Double-sideband amplitude shift keying (Double-Sideband Amplitude Shift Keying, DSB-ASK), single-sideband amplitude shift keying (Single-Sideband Amplitude Shift Keying, SSB-ASK), or anti-Phase amplitude shift keying (Phase-Reversal Amplitude Shift Keying, PR-ASK).

In some implementations, the first signal may or may not be an energizing signal, as the application is not limited in this regard.

For example, as in the communication system 100 shown in fig. 1A, the first communication device 110 may generate an energizing signal comprising: indication information for indicating a slot format. It should be understood that, for a TDD system, the communication device cannot receive and transmit simultaneously, and therefore, the first communication device 110 can only receive data transmitted by the terminal device in an uplink slot, but cannot transmit any information, data, signals, or the like to the terminal device. That is, the first communication device 110 can transmit the power supply signal only in the downlink slot, and based on this, the above-mentioned indication information for indicating the slot format can only be transmitted in the downlink slot.

For example, as described above, for the TDD system, the communication device cannot simultaneously receive and transmit, and thus, the first communication device can only receive data transmitted by the terminal device in an uplink slot, but cannot transmit any information, data, signals, or the like to the terminal device. However, in some special cases, if there are a plurality of continuous time slots, if the first communication device needs to send the indication information to the terminal device, the first communication device can only wait until the downlink time slot, which causes a problem that the transmission delay of the indication information is larger. The application may thus incorporate a second communication device which may power the terminal device. As in the communication system 200 shown in fig. 1B, the second communication device 220 may generate an energizing signal comprising: indication information for indicating a slot format.

For example, as described above, for the TDD system, the communication device cannot simultaneously receive and transmit, and thus, the first communication device can only receive data transmitted by the terminal device in an uplink slot, but cannot transmit any information, data, signals, or the like to the terminal device. However, in some special cases, if there are a plurality of continuous time slots, if the first communication device needs to send the indication information to the terminal device, the first communication device can only wait until the downlink time slot, which causes a problem that the transmission delay of the indication information is larger. The application may thus incorporate a second communication device which may power the terminal device in an upstream time slot. And the first communication device may power the terminal device in a downstream time slot. As in the communication system 200 shown in fig. 1B, the second communication device 220 may generate an energizing signal in an upstream time slot to energize the terminal device 230, the energizing signal including: indication information for indicating a slot format. The first communication device 210 may generate an energizing signal in the downlink time slot to energize the terminal device 230, the energizing signal including: indication information for indicating a slot format.

In some implementations, when the second communication device powers the first communication device, the second communication device may generate a power signal under control of the first communication device, such as: the first communication device may control the time, frequency band, etc. at which the second communication device generates the power signal, as the application is not limited in this regard.

In some implementations, when the second communication device powers the first communication device, the second communication device is an indication sent under control of the first communication device, for example: the first communication device may control the time, frequency band, etc. at which the second communication device transmits the indication information, which is not limited by the present application.

In some implementations, the communication device for supplying power to the terminal device may continuously send the power supply signal, or may intermittently send the power supply signal, which is not limited by the present application.

In some implementations, when the communication device intermittently transmits the energizing signals, the time interval between the energizing signals may be predefined or configured, as the application is not limited in this regard.

It will be appreciated that since the communication device may communicate with the terminal device, there may also be signals for data or information transmission. While the energizing signal and the signal for information transmission may be one signal or two independent signals, the present application is not limited in this respect. For example: in cellular passive internet of things, the two signals are two independent signals. In RFID technology, the two signals are one signal.

In some implementations, when the power signal and the signal for information transmission are two independent signals, the two signals may or may not be transmitted in one frequency band.

In summary, in the present application, for the above-mentioned passive terminals, even some semi-passive terminals or active terminals, which may not be battery powered in some cases, the communication device may send a first signal to such terminal devices, which signal includes: indication information for indicating the slot format so that such terminal devices acquire the slot format.

In some implementations, the slot format indicated by the indication information is a periodic slot format. That is, the indication information is used to indicate the slot formats of the plurality of slot sets, that is, the plurality of slot sets are consecutive plurality of slot sets, and the slot formats of the plurality of slot sets are the same. For example: the plurality of time slot sets comprises a plurality of continuous time slot sets, and each time slot set comprises: the 4 time slots, the 1 st time slot is a full downlink time slot, the first 2 symbols in the 2 nd time slot are downlink symbols, the last time slot is a full uplink time slot, the last 6 symbols in the penultimate time slot are uplink symbols, and the rest symbols are flexible symbols.

In some implementations, the indication information carried by the first signal is semi-static indication information and/or dynamic indication information.

It should be understood that, like existing NR systems, the network device needs to provide common configuration information for indicating the slot format of the cell, e.g. the common configuration information is tdd-UL-DL-configuration command, and the direction in which the tdd-UL-DL-configuration command is configured as flexible symbols can be changed by the network configured tdd-UL-DL-configuration command to further configure the slot format for a certain terminal device. Both of these configuration information are semi-static configuration information. In the present application, the indication information carried by the first signal may be similar to the semi-static configuration information in such an NR system. For example, the indication information includes at least one of, but is not limited to: period P, the period parameter of the pattern, is in units of ms, the number of downlink slots (d _slots ) Number of downlink symbols (d _sym ) Number of uplink slots (u) _slots ) Number of uplink symbols (u) _sym ) Symbol length, at least one flexible symbol for a terminal deviceThe direction of the number. Wherein, like in NR system, one slot may have several symbols, and period P may contain several slots.

Furthermore, in the NR system, on the basis of configuring the time slot format through the semi-static uplink and downlink configuration information, the network equipment can dynamically configure the time slot format of each time slot through the SFI, so that the indication information provided by the application can further indicate the time slot format of each time slot. That is, the indication information carried by the first signal includes: semi-static indication information and dynamic indication information. For example, reference may be made to dynamic indication information shown in table 1, each of which may be used to indicate a corresponding slot format.

TABLE 1

It should be understood that U above represents an uplink symbol, D represents a downlink symbol, and F represents a flexible symbol.

It should be understood that the first signal may carry only the semi-static indication information, where the terminal device may determine the slot format based on the semi-static indication information alone, or the first signal may carry only the semi-static indication information, and the dynamic indication information may be carried in other signals, which may or may not be communication devices that generate the first signal, where the terminal device may determine the slot format based on the semi-static indication information and the dynamic indication information. Alternatively, the first signal may carry only the dynamic indication information, and the semi-static indication information may be carried in another signal, which may or may not be a communication device that generates the first signal, and the terminal device may determine the slot format according to the semi-static indication information and the dynamic indication information. Or, the first signal carries semi-static indication information and dynamic indication information, and the terminal device may determine the slot format according to the semi-static indication information and the dynamic indication information.

In some implementations, if the first signal carries both semi-static indication information and dynamic indication information, the semi-static indication information and the dynamic indication information may be an integral unit or two independent indication information, which is not limited in this aspect of the application.

In summary, in the present application, for the above-mentioned passive terminals, even some semi-passive terminals or active terminals, which may not be battery powered in some cases, the communication device may send a first signal to such terminal devices, which signal includes: indication information for indicating the periodic slot format so that such terminal devices acquire the periodic slot format.

It should be appreciated that in the above embodiment, the slot format is a periodic slot format. After the terminal device obtains the periodic time slot format, the format of the subsequent time slot can be determined according to the period. The premise of this approach is that the terminal device can acquire synchronization, determine the corresponding frame, slot, symbol timing, etc. Whereas for the terminal device according to the application the maintenance of its synchronization state depends on the energy provided by the energizing signal. When the energizing signal is interrupted, the synchronization state previously obtained will be lost when such a terminal device enters a non-powered state. Even if such terminal devices always have energy supply signals to supply energy, because the timing precision of the local clocks of such terminal devices is poor, for example, a crystal oscillator device with high precision is not provided, the accurate uplink and downlink timings cannot be determined, so even if a time slot format is obtained, the terminal devices cannot determine the boundaries of the uplink and downlink time slots because the accurate timings cannot be maintained. Therefore, in this embodiment, the indication information carried by the first signal may be used to indicate the slot format of one slot set. Within the range of the set of time slots, the terminal device can maintain accurate timing so that the slot formats in the set of time slots can be determined from the slot formats.

Fig. 10 is a schematic diagram of indicating a slot format by indicating information provided in an embodiment of the present application, and as shown in fig. 10, the slot formats of two consecutive slots are indicated by the indicating information carried in the slot preceding the two slots. Wherein, for example, the indication information 10110010 and 01100101 respectively indicate different slot format combinations.

In summary, in the present application, for the above-mentioned passive terminals, even some semi-passive terminals or active terminals, which may not be battery powered in some cases, the communication device may send a first signal to such terminal devices, which signal includes: indication information for indicating the aperiodic slot format so that such terminal apparatuses acquire the aperiodic slot format. In addition, the indication information may be used for timing adjustment by the terminal device in addition to indicating the slot format, so as to obtain an accurate slot boundary, that is, the terminal device may not need to rely on the timing information, but may obtain the slot format of one slot set through the slot format, and may obtain accurate slot timing.

In some implementations, the indication information is periodic indication information. Fig. 11 is a schematic diagram of indicating a slot format by indicating information according to another embodiment of the present application, where the indicating information is 10110010, and each indicating information may indicate a corresponding slot structure, as shown in fig. 11, and one indicating information may indicate a slot format of a slot set formed by slots 0 to 4, as shown in fig. 11.

In some implementations, the indication information is aperiodic indication information.

It should be understood that aperiodic indicator is generally an indicator that is sent under some event trigger, and thus, the indicator is also referred to as triggerability indicator or event triggerability indicator, which is not a limitation of the present application.

In some implementations, the aperiodic indication information has an association with any one of: uplink transmission, downlink transmission, transition between uplink and downlink time slots. That is, at least one of uplink transmission, downlink transmission, transition between uplink and downlink time slots may trigger aperiodic indication information.

In summary, in the present application, the indication information may be sent periodically or aperiodically, so that the flexibility of sending the indication information may be improved.

Fig. 12 is a schematic diagram of a terminal device 1200 according to an embodiment of the present application, as shown in fig. 12, the terminal device 1200 includes:

a communication unit 1210 for receiving a first signal, the first signal comprising indication information for indicating a slot format. Wherein the terminal device is powered by the communication device.

In some implementations, the slot format is a periodic slot format.

In some implementations, the indication information is used to indicate a slot format of the plurality of slot sets.

In some implementations, the plurality of sets of slots are consecutive ones of the plurality of sets of slots, and the slot formats of the plurality of sets of slots are the same.

In some implementations, the indication information is semi-static indication information and/or dynamic indication information.

In some implementations, the slot format is an aperiodic slot format.

In some implementations, the indication information is used to indicate a slot format of one set of slots.

In some implementations, the indication information is periodic indication information.

In some implementations, the indication information has an association with any one of: uplink transmission, downlink transmission, transition between uplink and downlink time slots.

In some implementations, the communication unit 1210 is further configured to: data is transmitted to the first communication device according to the slot format.

In some implementations, the first signal is an energizing signal generated by the first communication device.

In some implementations, the first signal is an energizing signal generated by the second communication device.

In some implementations, when the current time slot between the first communication device and the terminal device is an uplink time slot, the first signal is an energizing signal generated by the second communication device at the current time slot, and when the current time slot between the first communication device and the terminal device is a downlink time slot, the first signal is an energizing signal generated by the first communication device at the current time slot.

In some implementations, the second communication device is an energizing signal generated under control of the first communication device.

In some implementations, the second communication device is an indication information sent under control of the first communication device.

In some implementations, the first signal carries the indication information after being modulated.

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.

It should be understood that the terminal device 1200 according to the embodiment of the present application may correspond to the terminal device in the above method embodiment, and the above and other operations and/or functions of each unit in the terminal device 1200 are respectively for implementing the corresponding flow of the terminal device in the above method embodiment, which is not described herein for brevity.

Fig. 13 is a schematic diagram of a communication device 1300 according to an embodiment of the present application, where the communication device 1300 may be the first communication device described above, and as shown in fig. 13, the communication device 1300 includes: a processing unit 1310 and a communication unit 1320, wherein the processing unit 1310 is configured to generate a first signal. The communication unit 1320 is configured to transmit a first signal to a terminal device. The first signal includes indication information for indicating a slot format. The terminal device is powered by the first communication device.

In some implementations, the slot format is a periodic slot format.

In some implementations, the slot format is an aperiodic slot format.

In some implementations, the communication unit 1320 is further to: and receiving the data sent by the terminal equipment according to the time slot format.

In some implementations, when the current time slot between the first communication device and the terminal device is a downlink time slot, the first signal is an energizing signal generated by the first communication device at the current time slot.

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 communication device 1300 according to the embodiment of the present application may correspond to the first communication device in the above method embodiment, and the above and other operations and/or functions of each unit in the communication device 1300 are respectively for implementing the corresponding flow of the first communication device in the above method embodiment, which is not repeated herein for brevity.

Fig. 14 is a schematic diagram of a communication device 1400 according to an embodiment of the present application, where the communication device 1400 may be the second communication device described above, and as shown in fig. 14, the communication device 1400 includes: a processing unit 1410 and a communication unit 1420, wherein the processing unit 1410 is configured to generate a first signal. The communication unit 1420 is configured to transmit a first signal to a terminal device. Wherein the first signal comprises indication information for indicating a slot format. The terminal device is powered by the second communication device.

In some implementations, the slot format is a periodic slot format.

In some implementations, the slot format is an aperiodic slot format.

In some implementations, when the current time slot between the first communication device and the terminal device is an uplink time slot, the first signal is an energizing signal generated by the second communication device at the current time slot.

In some implementations, the first communication device is a communication device in which the terminal device performs data transmission according to a slot format.

It should be understood that the communication device 1400 according to the embodiment of the present application may correspond to the second communication device in the above-described method embodiment, and the above-described and other operations and/or functions of each unit in the communication device 1400 are respectively for implementing the corresponding flow of the second communication device in the above-described method embodiment, which are not repeated herein for brevity.

Fig. 15 is a schematic block diagram of a communication device 1500 according to an embodiment of the present application. The communication device 1500 shown in fig. 15 comprises a processor 1510, from which the processor 1510 can call and run a computer program to implement the method in an embodiment of the application.

In some implementations, as shown in fig. 15, the communication device 1500 may also include a memory 1520. Wherein the processor 1510 may invoke and run a computer program from the memory 1520 to implement the method in embodiments of the present application.

Wherein the memory 1520 may be a separate device from the processor 1510 or may be integrated into the processor 1510.

In some implementations, as shown in fig. 15, the communication device 1500 may further include a transceiver 1530, and the processor 1510 may control the transceiver 1530 to communicate with other devices, in particular, may transmit information or data to other devices, or receive information or data transmitted by other devices.

Wherein the transceiver 1530 may include a transmitter and a receiver. The transceiver 1530 may further include an antenna, the number of which may be one or more.

In some realizable implementations, the communication device 1500 may be specifically a first communication device in the embodiments of the present application, and the communication device 1500 may implement corresponding flows implemented by the first communication device in the methods in the embodiments of the present application, which are not described herein for brevity.

In some realizable implementations, the communication device 1500 may be specifically a second communication device in the embodiments of the present application, and the communication device 1500 may implement corresponding flows implemented by the second communication device in the methods in the embodiments of the present application, which are not described herein for brevity.

In some realizable manners, the communication device 1500 may be specifically a terminal device in the embodiments of the present application, and the communication device 1500 may implement corresponding flows implemented by the terminal device in the methods in the embodiments of the present application, which are not described herein for brevity.

Fig. 16 is a schematic structural view of an apparatus of an embodiment of the present application. The apparatus 1600 shown in fig. 16 includes a processor 1610, and the processor 1610 may call and execute a computer program from a memory to implement the method in an embodiment of the application.

In some implementations, as shown in fig. 16, the apparatus 1600 may also include a memory 1620. Wherein the processor 1610 may call and run a computer program from the memory 1620 to implement the method in an embodiment of the present application.

Wherein memory 1620 may be a separate device from processor 1610 or may be integrated within processor 1610.

In some implementations, the apparatus 1600 may also include an input interface 1630. Wherein processor 1610 may control the input interface 1630 to communicate with other devices or chips, and in particular may obtain information or data sent by other devices or chips.

In some implementations, the apparatus 1600 may also include an output interface 1640. Wherein processor 1610 may control the output interface 1640 to communicate with other devices or chips, and in particular may output information or data to other devices or chips.

In some realizable modes, the apparatus may be applied to the first communication device in the embodiment of the present application, and the apparatus may implement a corresponding flow implemented by the first communication device in each method in the embodiment of the present application, which is not described herein for brevity.

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

In some realizable modes, the device may be applied to a terminal device in the embodiment of the present application, and the device may implement corresponding flows implemented by the terminal device in each method in the embodiment of the present application, which are not described herein for brevity.

In some implementations, the device according to the embodiments of the present application may also 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.

In some implementations, the computer readable storage medium may be applied to a mobile terminal/terminal device in an embodiment of the present application, and the computer program causes 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 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.

In some implementations, the computer program product may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments 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.

In some realizable embodiments, the computer program may be applied to a mobile terminal/terminal device in the embodiments 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 embodiments of the present application, which are 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, comprising:

the terminal equipment receives a first signal, wherein the first signal comprises indication information for indicating a time slot format;

wherein the terminal device is powered by the communication device.
The method of claim 1, wherein the slot format is a periodic slot format.
The method of claim 2, wherein the indication information is used to indicate a slot format of a plurality of slot sets.
The method of claim 3, wherein the plurality of sets of time slots are consecutive sets of time slots, and wherein the plurality of sets of time slots have the same slot format.
The method according to any of claims 2-4, wherein the indication information is semi-static indication information and/or dynamic indication information.
The method of claim 1, wherein the slot format is an aperiodic slot format.
The method of claim 6, wherein the indication information is used to indicate a slot format of one slot set.
The method according to any of claims 1-7, wherein the indication information is periodic indication information.
The method of any of claims 1-7, wherein the indication information is aperiodic indication information.
The method of claim 9, wherein the indication information has an association relationship with any one of:

uplink transmission;

downlink transmission;

switching between uplink and downlink time slots.
The method according to any one of claims 1-10, further comprising:

and the terminal equipment transmits data to the first communication equipment according to the time slot format.
The method of claim 11, wherein the first signal is an energizing signal generated by the first communication device.
The method of claim 11, wherein the first signal is an energizing signal generated by a second communication device.
The method of claim 11, wherein the first signal is an energizing signal generated by a second communication device at a current time slot between the first communication device and the terminal device when the current time slot is an upstream time slot, and wherein the first signal is an energizing signal generated by the first communication device at the current time slot when the current time slot between the first communication device and the terminal device is a downstream time slot.
A method according to claim 13 or 14, wherein the second communication device is the energizing signal generated under control of the first communication device.
A method according to claim 13 or 14, wherein the second communication device is the indication information sent under control of the first communication device.
The method according to any of claims 1-16, wherein the first signal is modulated to carry the indication information.
A method of wireless communication, comprising:

the first communication device generating a first signal;

the first communication device sends the first signal to a terminal device;

wherein the first signal includes indication information for indicating a slot format; the terminal device is powered by the first communication device.
The method of claim 18, wherein the slot format is a periodic slot format.
The method of claim 19, wherein the indication information is used to indicate a slot format of a plurality of slot sets.
The method of claim 20, wherein the plurality of sets of time slots are consecutive sets of time slots, and wherein the plurality of sets of time slots are in the same slot format.
The method according to any of claims 19-21, wherein the indication information is semi-static indication information and/or dynamic indication information.
The method of claim 18, wherein the slot format is an aperiodic slot format.
The method of claim 23, wherein the indication information is used to indicate a slot format of a set of slots.
The method according to any of claims 18-24, wherein the indication information is periodic indication information.
The method according to any of claims 18-24, wherein the indication information is aperiodic indication information.
The method of claim 26, wherein the indication information has an association with any one of:

Uplink transmission;

downlink transmission;

switching between uplink and downlink time slots.
The method according to any one of claims 18-27, further comprising:

the first communication device receives data sent by the terminal device according to the time slot format.
The method of any one of claims 18-27, wherein the first signal is an energizing signal generated by the first communication device.
The method according to any of claims 18-27, wherein when a current time slot between the first communication device and the terminal device is a downlink time slot, the first signal is an energizing signal generated by the first communication device at the current time slot.
The method according to any of claims 18-30, wherein the first signal is modulated to carry the indication information.
A method of wireless communication, comprising:

the second communication device generating a first signal;

the second communication device sends the first signal to a terminal device;

wherein the first signal includes indication information for indicating a slot format; the terminal device is powered by the second communication device.
The method of claim 32, wherein the slot format is a periodic slot format.
The method of claim 33, wherein the indication information is used to indicate a slot format of a plurality of slot sets.
The method of claim 34, wherein the plurality of sets of time slots are consecutive sets of time slots, and wherein the plurality of sets of time slots are in the same slot format.
The method according to any of claims 33-35, wherein the indication information is semi-static indication information and/or dynamic indication information.
The method of claim 32, wherein the slot format is an aperiodic slot format.
The method of claim 37, wherein the indication information is used to indicate a slot format of a set of slots.
The method of any of claims 32-38, wherein the indication information is periodic indication information.
The method of any of claims 32-38, wherein the indication information is aperiodic indication information.
The method of claim 40, wherein the indication information has an association with any one of:

Uplink transmission;

downlink transmission;

switching between uplink and downlink time slots.
The method of any one of claims 32-41, wherein the first signal is an energizing signal generated by a second communication device.
The method of any of claims 32-41, wherein when a current time slot between a first communication device and the terminal device is an upstream time slot, the first signal is an energizing signal generated by a second communication device at the current time slot.
The method of claim 42 or 43, wherein the second communication device is the energizing signal generated under control of the first communication device.
The method of claim 42 or 43, wherein the second communication device is the indication information transmitted under control of the first communication device.
The method according to any of claims 43-45, wherein the first communication device is a communication device in which the terminal device performs data transmission according to the slot format.
The method of any of claims 32-46, wherein the first signal is modulated to carry the indication information.
A terminal device, comprising:

a communication unit configured to receive a first signal including indication information for indicating a slot format;

wherein the terminal device is powered by the communication device.
A communication device, wherein the communication device is a first communication device, comprising:

a processing unit for generating a first signal;

a communication unit, configured to send the first signal to a terminal device;

wherein the first signal includes indication information for indicating a slot format; the terminal device is powered by the first communication device.
A communication device, wherein the communication device is a second communication device, comprising:

a processing unit for generating a first signal;

a communication unit, configured to send the first signal to a terminal device;

wherein the first signal includes indication information for indicating a slot format; the terminal device is powered by the second communication device.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method of any of claims 1 to 17.
A communication 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 18 to 47.
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 17.
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 of claims 18 to 47.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 17.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 18 to 47.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 17.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 18 to 47.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 17.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 18 to 47.