Communication method and device, communication equipment, communication system and storage medium

Abstract

The present disclosure proposes a communication method, apparatus and device, and a storage medium, the method comprising: receiving first information sent by a network device, the first information being used for indicating a first communication mode, the first communication mode comprising: a sending frequency adopted when a terminal performs backscatter communication, and / or a sending frequency adopted when the terminal performs backscatter communication; the first communication mode is determined by the network device based on at least one sending frequency supported by the terminal and / or at least one sending mode supported by the terminal, wherein the sending mode is adopted when the terminal performs backscatter communication, and the first communication mode is determined by the network device based on the at least one sending frequency supported by the terminal and / or the at least one sending mode supported by the terminal; and carrying out backscatter communication by adopting the first communication mode. According to the method, the accuracy and reliability of communication can be ensured, and the communication quality is ensured.

Description

Communication method and device, communication equipment, communication system, and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to communication methods and devices, communication equipment, communication systems, and storage media. Background Art

[0002] In communication systems, backscattering communication has been widely used due to its low cost, power consumption and equipment size. However, how to improve the communication reliability and performance of backscattering communication is a technical problem that needs to be solved urgently.

[0003] Summary of the Invention

[0004] The present disclosure provides a communication method and apparatus, a communication device, a communication system, and a storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, which is performed by a terminal, wherein the terminal is configured to implement backscattering communication. The method includes:

[0006] receiving first information sent by a network device, where the first information is used to indicate a first communication mode, where the first communication mode includes: a transmission frequency used by the terminal when performing backscatter communication, and / or a transmission form used by the terminal when performing backscatter communication; the first communication mode is determined by the network device based on at least one transmission frequency supported by the terminal and / or at least one transmission form supported by the terminal;

[0007] The first communication mode is used for backscatter communication.

[0008] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, which is executed by a network device and includes:

[0009] Determine a first indication and / or a second indication; wherein the first indication is used to indicate at least one transmission frequency supported by the terminal, and the second indication is used to indicate a transmission form supported by the terminal; the terminal is used to implement backscatter communication;

[0010] First information is sent to the terminal, where the first information is used to indicate a first communication mode, where the first communication mode includes: a sending frequency adopted by the terminal for backscatter communication, and / or a sending form adopted by the terminal for backscatter communication.

[0011] According to a third aspect of an embodiment of the present disclosure, a communication method is provided for use in a communication system, the communication system including a terminal and a network device, the method including at least one of the following:

[0012] The network device determines a first indication and / or a second indication; wherein the first indication is used to indicate at least one transmission frequency supported by the terminal, and the second indication is used to indicate a transmission form supported by the terminal; the terminal is used to implement backscatter communication;

[0013] The network device sends first information to the terminal, where the first information is used to indicate a first communication mode, where the first communication mode includes: a transmission frequency used by the terminal for backscatter communication, and / or a transmission form used by the terminal for backscatter communication;

[0014] The terminal receives the first information sent by the network device;

[0015] The terminal performs backscatter communication using the first communication mode.

[0016] According to a fourth aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0017] a transceiver module, configured to receive first information sent by a network device, where the first information is used to indicate a first communication mode, where the first communication mode includes: a transmission frequency used by the terminal when performing backscatter communication, and / or a transmission form used by the terminal when performing backscatter communication, where the first communication mode is determined by the network device based on at least one transmission frequency and / or at least one transmission form supported by the terminal;

[0018] The transceiver module is used to perform backscatter communication using the first communication mode.

[0019] According to a fifth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0020] a processing module, configured to determine a first indication and / or a second indication; wherein the first indication is used to indicate at least one transmission frequency supported by the terminal, and the second indication is used to indicate a transmission form supported by the terminal; and the terminal is configured to implement backscatter communication;

[0021] The transceiver module is used to send first information to the terminal, where the first information is used to indicate a first communication mode. The first communication mode includes: a sending frequency used by the terminal for backscatter communication, and / or a sending form used by the terminal for backscatter communication.

[0022] According to a sixth aspect of an embodiment of the present disclosure, a communication device is provided, including:

[0023] one or more processors;

[0024] The processor is used to call instructions to enable the communication device to execute the communication method described in the first aspect or the second aspect.

[0025] According to the seventh aspect of an embodiment of the present disclosure, a communication system is proposed, characterized in that it includes a terminal and a network device, wherein the terminal is configured to implement the communication method described in the first aspect, and the network device is configured to implement the communication method described in the second aspect.

[0026] According to an eighth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions, and is characterized in that when the instructions are executed on a communication device, the communication device executes the communication method described in the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0028] FIG1 is a schematic diagram of the architecture of some communication systems provided by embodiments of the present disclosure;

[0029] 2A-2P are interactive diagrams of a communication method provided by one embodiment of the present disclosure;

[0030] 3-5 are flowcharts of a communication method provided in yet another embodiment of the present disclosure;

[0031] FIG6A is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure;

[0032] FIG6B is a schematic diagram of the structure of a network device provided by an embodiment of the present disclosure;

[0033] FIG7A is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0034] FIG7B is a schematic structural diagram of a chip provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0035] The embodiments of the present disclosure provide a communication method and apparatus, a communication device, a communication system, and a storage medium.

[0036] In a first aspect, an embodiment of the present disclosure provides a communication method, performed by a terminal, the terminal being configured to implement backscattering communication, the method comprising:

[0037] receiving first information sent by a network device, where the first information is used to indicate a first communication mode, where the first communication mode includes: a transmission frequency used by the terminal when performing backscatter communication, and / or a transmission form used by the terminal when performing backscatter communication; the first communication mode is determined by the network device based on at least one transmission frequency supported by the terminal and / or at least one transmission form supported by the terminal;

[0038] The first communication mode is used for backscatter communication.

[0039] In the above embodiment, the network device will determine the first communication mode based on at least one transmission frequency supported by the terminal and / or at least one transmission form supported by the terminal. The first communication mode is the communication mode adopted by the terminal for backscatter communication. The first communication mode includes: the transmission frequency adopted by the terminal for backscatter communication, and / or the transmission form adopted by the terminal for backscatter communication. Afterwards, the terminal will perform backscatter communication based on the first communication mode. It can be seen from this that the present disclosure provides a method for backscatter communication, and in the backscatter communication of the present disclosure, the communication mode of the terminal during backscatter communication is determined by the network device based on at least one transmission frequency supported by the terminal and / or at least one transmission form supported by the terminal, wherein, when the terminal supports multiple transmission frequencies, the first communication mode indicated by the network device to the terminal can be: backscattering on multiple transmission frequencies, wherein backscattering on multiple transmission frequencies means: for the same information, backscattering is performed on multiple transmission frequencies respectively, that is, the same information can be sent multiple times, thereby improving the reliability and performance of the backscatter communication, so that even when long-distance backscattering is performed, the accuracy and reliability of the communication can still be ensured, thereby ensuring the communication quality.

[0040] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0041] Reporting a first indication and / or a second indication to the network device; wherein the first indication is used to indicate at least one sending frequency supported by the terminal, and the second indication is used to indicate a sending form supported by the terminal.

[0042] In the above embodiment, the terminal reports at least one transmission frequency and / or supported transmission form supported by the terminal to the network device, so that the network device can determine a first communication mode based on the terminal's report and instruct the terminal to perform backscatter communication based on the first communication mode. Specifically, when the terminal supports multiple transmission frequencies, the first communication mode indicated by the network device to the terminal may be backscattering at multiple transmission frequencies, thereby improving the reliability and performance of backscatter communication. Even when performing long-distance backscattering, communication accuracy and reliability can still be ensured, thereby guaranteeing communication quality.

[0043] In conjunction with some embodiments of the first aspect, in some embodiments, the terminal is configured to implement backscatter communication, including:

[0044] The terminal receives electromagnetic waves and sends information by reflecting the electromagnetic waves; wherein, the sending frequency used by the terminal when reflecting the electromagnetic waves is the same as the receiving frequency used by the terminal when receiving the electromagnetic waves, and / or, the sending frequency used by the terminal when reflecting the electromagnetic waves is offset from the receiving frequency used by the terminal when receiving the electromagnetic waves.

[0045] In the above embodiment, the specific sending method of the terminal during backscatter communication is defined, thereby limiting the applicable objects of the method, making it easier to determine which terminals implement backscatter communication, so as to control the terminal to use the method disclosed in this disclosure to improve the reliability and performance of backscatter communication and ensure communication quality.

[0046] In conjunction with some embodiments of the first aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one offset value supported by the terminal, the offset value being an offset between a transmission frequency supported by the terminal for simultaneous transmission and a reception frequency used by the terminal when receiving electromagnetic waves;

[0047] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0048] In conjunction with some embodiments of the first aspect, in some embodiments, the first communication mode includes: a transmitting frequency used by the terminal when performing backscatter communication is: a first transmitting frequency; a transmitting mode used by the terminal when performing backscatter communication is: simultaneously transmitting information at different transmitting frequencies; wherein the first transmitting frequency is a transmitting frequency supported by the terminal for simultaneous transmission, and the first transmitting frequency is determined based on an offset value supported by the terminal and the receiving frequency;

[0049] The adopting the first communication mode to perform backscatter communication includes:

[0050] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one first transmission frequency to simultaneously transmit information.

[0051] In conjunction with some embodiments of the first aspect, in some embodiments, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously on different sending frequencies;

[0052] The adopting the first communication mode to perform backscatter communication includes:

[0053] Determining at least one transmission frequency supported by the terminal for simultaneous transmission based on at least one offset value supported by the terminal;

[0054] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one transmission frequency supporting simultaneous transmission to simultaneously transmit information.

[0055] In conjunction with some embodiments of the first aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency supported by the terminal for simultaneous transmission;

[0056] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0057] In conjunction with some embodiments of the first aspect, in some embodiments, the first communication mode includes: the sending frequency used by the terminal when performing backscatter communication is: the at least one sending frequency that supports simultaneous sending; the sending form used by the terminal when performing backscatter communication is: sending information simultaneously on different sending frequencies;

[0058] The adopting the first communication mode to perform backscatter communication includes:

[0059] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one transmission frequency supporting simultaneous transmission to simultaneously transmit information.

[0060] In conjunction with some embodiments of the first aspect, in some embodiments, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously on different sending frequencies;

[0061] The adopting the first communication mode to perform backscatter communication includes:

[0062] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one transmission frequency supporting simultaneous transmission to simultaneously transmit information.

[0063] In conjunction with some embodiments of the first aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one offset value group supported by the terminal, the offset value group including multiple offset values, and the multiple transmission frequencies determined by the multiple offset values ​​in the offset value group support simultaneous transmission;

[0064] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0065] In conjunction with some embodiments of the first aspect, in some embodiments, the first communication mode includes: a transmitting frequency used by the terminal when performing backscatter communication is: a second transmitting frequency; and a transmitting mode used by the terminal when performing backscatter communication is: simultaneously transmitting information at different transmitting frequencies; wherein the second transmitting frequency is a transmitting frequency supported by the terminal for simultaneous transmission, the second transmitting frequency is determined based on an offset value in a first offset value group and a receiving frequency used by the terminal when receiving electromagnetic waves, and the first offset value group is determined by the network device from at least one offset value group supported by the terminal;

[0066] The adopting the first communication mode to perform backscatter communication includes:

[0067] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one second transmission frequency to simultaneously transmit information.

[0068] In conjunction with some embodiments of the first aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency group supported by the terminal, the transmission frequency group including multiple transmission frequencies supported by the terminal for simultaneous transmission;

[0069] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0070] In conjunction with some embodiments of the first aspect, in some embodiments, the first communication mode includes: a transmission frequency used by the terminal when performing backscatter communication is: a transmission frequency in a first frequency group; a transmission form used by the terminal when performing backscatter communication is: simultaneously sending information on different transmission frequencies; wherein the first frequency group is determined by the network device from at least one transmission frequency group supported by the terminal;

[0071] The adopting the first communication mode to perform backscatter communication includes:

[0072] The electromagnetic waves received by the terminals are simultaneously reflected on the transmission frequencies in the first frequency group to simultaneously transmit information.

[0073] In conjunction with some embodiments of the first aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one offset value supported by the terminal, the offset value being an offset between a transmission frequency supported by the terminal for frequency hopping transmission and a receiving frequency used by the terminal when receiving electromagnetic waves;

[0074] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0075] In conjunction with some embodiments of the first aspect, in some embodiments, the first communication mode includes: a transmitting frequency used by the terminal when performing backscatter communication is: a first transmitting frequency; and a transmitting mode used by the terminal when performing backscatter communication is: frequency hopping to transmit information on different transmitting frequencies; wherein the first transmitting frequency is the transmitting frequency that supports frequency hopping transmission, and the first transmitting frequency is determined based on an offset value supported by the terminal and a receiving frequency used by the terminal when receiving electromagnetic waves;

[0076] The adopting the first communication mode to perform backscatter communication includes:

[0077] The electromagnetic waves received by the terminal are reflected by frequency hopping on at least one first transmission frequency to transmit information by frequency hopping.

[0078] In conjunction with some embodiments of the first aspect, in some embodiments, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information on different sending frequencies;

[0079] The adopting the first communication mode to perform backscatter communication includes:

[0080] Determining at least one transmission frequency supported by the terminal for frequency hopping transmission based on at least one offset value supported by the terminal;

[0081] The electromagnetic waves received by the terminal are reflected by frequency hopping on at least one transmission frequency supporting frequency hopping transmission to transmit information by frequency hopping.

[0082] In conjunction with some embodiments of the first aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency supported by the terminal for frequency hopping transmission;

[0083] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0084] In conjunction with some embodiments of the first aspect, in some embodiments, the first communication mode includes: the sending frequency used by the terminal when performing backscatter communication is: the at least one sending frequency supporting frequency hopping transmission; the sending form used by the terminal when performing backscatter communication is: frequency hopping to send information on different sending frequencies;

[0085] The adopting the first communication mode to perform backscatter communication includes:

[0086] The electromagnetic waves received by the terminal are reflected by frequency hopping on at least one transmission frequency supporting frequency hopping transmission to transmit information by frequency hopping.

[0087] In conjunction with some embodiments of the first aspect, in some embodiments, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information on different sending frequencies;

[0088] The adopting the first communication mode to perform backscatter communication includes:

[0089] The electromagnetic waves received by the terminal are reflected by frequency hopping on at least one transmission frequency supporting frequency hopping transmission to transmit information by frequency hopping.

[0090] In conjunction with some embodiments of the first aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one offset value group supported by the terminal, the offset value group including multiple offset values, and the multiple transmission frequencies determined by the multiple offset values ​​in the offset value group supporting frequency hopping transmission;

[0091] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0092] In conjunction with some embodiments of the first aspect, in some embodiments, the first communication mode includes: a transmitting frequency used by the terminal when performing backscatter communication is: a second transmitting frequency; and a transmitting mode used by the terminal when performing backscatter communication is: frequency hopping to transmit information on different transmitting frequencies; wherein the second transmitting frequency is a transmitting frequency supported by the terminal for frequency hopping transmission, and the second transmitting frequency is determined based on an offset value in a first offset value group and a receiving frequency used by the terminal when receiving electromagnetic waves, and the first offset value group is determined by the network device from at least one offset value group supported by the terminal;

[0093] The adopting the first communication mode to perform backscatter communication includes:

[0094] The electromagnetic waves received by the terminal are reflected by frequency hopping on at least one second transmission frequency to transmit information by frequency hopping.

[0095] In conjunction with some embodiments of the first aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency group supported by the terminal, the transmission frequency group including multiple transmission frequencies supported by the terminal for frequency hopping transmission;

[0096] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0097] In conjunction with some embodiments of the first aspect, in some embodiments, the first communication mode includes: a transmission frequency used by the terminal when performing backscatter communication is: a transmission frequency in a first frequency group; a transmission form used by the terminal when performing backscatter communication is: frequency hopping to transmit information on different transmission frequencies; wherein the first frequency group is determined by the network device from at least one transmission frequency group supported by the terminal;

[0098] The adopting the first communication mode to perform backscatter communication includes:

[0099] The electromagnetic waves received by the terminal are reflected by frequency hopping on the transmission frequencies in the first frequency group to transmit information by frequency hopping.

[0100] In conjunction with some embodiments of the first aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one third transmission frequency supported by the terminal for simultaneous transmission and at least one fourth transmission frequency supported by the terminal for frequency hopping transmission;

[0101] The transmission forms supported by the terminal include: the terminal supports simultaneous information transmission, and the terminal supports frequency hopping information transmission.

[0102] In combination with some embodiments of the first aspect, in some embodiments, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: a third sending frequency; the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously at different sending frequencies; or, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously at different sending frequencies.

[0103] In conjunction with some embodiments of the first aspect, in some embodiments, performing backscatter communication using the first communication mode includes:

[0104] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one third transmission frequency to simultaneously transmit information.

[0105] In combination with some embodiments of the first aspect, in some embodiments, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: the fourth sending frequency; the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information at different sending frequencies; or, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information at different sending frequencies.

[0106] In conjunction with some embodiments of the first aspect, in some embodiments, performing backscatter communication using the first communication mode includes:

[0107] The electromagnetic waves received by the terminal are reflected by frequency hopping on the at least one fourth transmission frequency to transmit information by frequency hopping.

[0108] In the above embodiment, a method is provided for a terminal to perform simultaneous backscatter transmission on at least one transmission frequency, so that the terminal can perform simultaneous backscatter transmission on at least one transmission frequency. Furthermore, a method is provided for a terminal to perform frequency-hopping backscatter transmission on at least one transmission frequency, so that the terminal can perform frequency-hopping backscatter transmission on at least one transmission frequency. Simultaneous backscatter transmission on at least one transmission frequency means that the same information is simultaneously backscattered on multiple transmission frequencies, i.e., the same information can be simultaneously transmitted multiple times. Frequency-hopping backscatter transmission on at least one transmission frequency means that the same information is frequency-hopped backscattered on multiple transmission frequencies, i.e., the same information can be transmitted multiple times. Therefore, whether simultaneous transmission on at least one transmission frequency or frequency-hopping transmission on at least one transmission frequency is used, the same information is transmitted multiple times, thereby improving the reliability and performance of backscatter communication. Therefore, even when backscattering over long distances, communication accuracy and reliability can be ensured, guaranteeing communication quality.

[0109] In conjunction with some embodiments of the first aspect, in some embodiments, the frequency hopping information transmission includes:

[0110] Information is transmitted by frequency hopping based on a frequency hopping pattern.

[0111] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes at least one of the following:

[0112] Determining the frequency hopping pattern based on protocol agreement;

[0113] receiving the frequency hopping pattern indicated by the network device;

[0114] Report at least one candidate frequency hopping pattern supported by the terminal to the network device, and receive the frequency hopping pattern indicated by the network device based on the at least one candidate frequency hopping pattern.

[0115] In the above embodiment, a method for frequency hopping transmission of a terminal is provided, so that the terminal can perform frequency hopping transmission of backscatter on at least one transmission frequency, thereby improving the reliability and performance of backscatter communication and ensuring communication quality.

[0116] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0117] Determine a receiving frequency used by the terminal when receiving electromagnetic waves.

[0118] In the above embodiment, the terminal determines the receiving frequency used when it receives electromagnetic waves, so that the terminal can determine at least one transmitting frequency supported by the terminal based on the receiving frequency used when the terminal receives electromagnetic waves and the offset value supported by the terminal. The terminal can then perform backscattering on at least one transmitting frequency supported by the terminal, thereby improving the reliability and performance of backscattering communication and ensuring communication quality.

[0119] In conjunction with some embodiments of the first aspect, in some embodiments, the sending form includes at least one of the following:

[0120] The same uplink transmission can be performed on multiple transmission frequencies;

[0121] The same uplink transmission can be carried out simultaneously on multiple transmission frequencies;

[0122] The same uplink transmission can be performed by frequency hopping on multiple transmission frequencies.

[0123] In a second aspect, an embodiment of the present disclosure provides a communication method, which is performed by a network device. The method includes:

[0124] Determine a first indication and / or a second indication; wherein the first indication is used to indicate at least one transmission frequency supported by the terminal, and the second indication is used to indicate a transmission form supported by the terminal; the terminal is used to implement backscatter communication;

[0125] First information is sent to the terminal, where the first information is used to indicate a first communication mode, where the first communication mode includes: a sending frequency adopted by the terminal for backscatter communication, and / or a sending form adopted by the terminal for backscatter communication.

[0126] In the above embodiment, the network device will determine the first communication mode based on at least one transmission frequency supported by the terminal and / or at least one transmission form supported by the terminal. The first communication mode is the communication mode adopted by the terminal for backscatter communication. The first communication mode includes: the transmission frequency adopted by the terminal for backscatter communication, and / or the transmission form adopted by the terminal for backscatter communication. Afterwards, the terminal will perform backscatter communication based on the first communication mode. It can be seen from this that the present disclosure provides a method for backscatter communication, and in the backscatter communication of the present disclosure, the communication mode of the terminal during backscatter communication is determined by the network device based on at least one transmission frequency supported by the terminal and / or at least one transmission form supported by the terminal, wherein, when the terminal supports multiple transmission frequencies, the first communication mode indicated by the network device to the terminal can be: backscattering on multiple transmission frequencies, wherein backscattering on multiple transmission frequencies means: for the same information, backscattering is performed on multiple transmission frequencies respectively, that is, the same information can be sent multiple times, thereby improving the reliability and performance of the backscatter communication, so that even when long-distance backscattering is performed, the accuracy and reliability of the communication can still be ensured, thereby ensuring the communication quality.

[0127] In conjunction with some embodiments of the second aspect, in some embodiments, determining the first indication and / or the second indication includes at least one of the following:

[0128] receiving the first indication and / or the second indication reported by the terminal;

[0129] The first indication and / or the second indication is determined from a core network based on the terminal identification of the terminal.

[0130] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes at least one of the following:

[0131] indicating a frequency hopping pattern to the terminal;

[0132] receiving at least one candidate frequency hopping pattern supported by the terminal and reported by the terminal, and indicating a frequency hopping pattern to the terminal based on the at least one candidate frequency hopping pattern.

[0133] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0134] Determine a receiving frequency used by the terminal when receiving electromagnetic waves.

[0135] In a third aspect, an embodiment of the present disclosure provides a communication method for a communication system, wherein the communication system includes a terminal and a network device, and the method includes at least one of the following:

[0136] The network device determines a first indication and / or a second indication; wherein the first indication is used to indicate at least one transmission frequency supported by the terminal, and the second indication is used to indicate a transmission form supported by the terminal; the terminal is used to implement backscatter communication;

[0137] The network device sends first information to the terminal, where the first information is used to indicate a first communication mode, where the first communication mode includes: a transmission frequency used by the terminal for backscatter communication, and / or a transmission form used by the terminal for backscatter communication;

[0138] The terminal receives the first information sent by the network device;

[0139] The terminal performs backscatter communication using the first communication mode.

[0140] In a fourth aspect, an embodiment of the present disclosure provides a terminal, including:

[0141] a transceiver module, configured to receive first information sent by a network device, where the first information is used to indicate a first communication mode, where the first communication mode includes: a transmission frequency used by the terminal when performing backscatter communication, and / or a transmission form used by the terminal when performing backscatter communication, where the first communication mode is determined by the network device based on at least one transmission frequency and / or at least one transmission form supported by the terminal;

[0142] The transceiver module is used to perform backscatter communication using the first communication mode.

[0143] In conjunction with some embodiments of the fourth aspect, in some embodiments, the device is further used to:

[0144] Reporting a first indication and / or a second indication to the network device; wherein the first indication is used to indicate at least one sending frequency supported by the terminal, and the second indication is used to indicate a sending form supported by the terminal.

[0145] In conjunction with some embodiments of the fourth aspect, in some embodiments, the terminal is configured to implement backscatter communication, including:

[0146] The terminal receives electromagnetic waves and sends information by reflecting the electromagnetic waves; wherein, the sending frequency used by the terminal when reflecting the electromagnetic waves is the same as the receiving frequency used by the terminal when receiving the electromagnetic waves, and / or, the sending frequency used by the terminal when reflecting the electromagnetic waves is offset from the receiving frequency used by the terminal when receiving the electromagnetic waves.

[0147] In conjunction with some embodiments of the fourth aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one offset value supported by the terminal, the offset value being an offset between a transmission frequency supported by the terminal for simultaneous transmission and a reception frequency used by the terminal when receiving electromagnetic waves;

[0148] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0149] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first communication mode includes: a transmitting frequency used by the terminal when performing backscatter communication is: a first transmitting frequency; a transmitting form used by the terminal when performing backscatter communication is: simultaneously transmitting information at different transmitting frequencies; wherein the first transmitting frequency is a transmitting frequency supported by the terminal for simultaneous transmission, and the first transmitting frequency is determined based on an offset value supported by the terminal and the receiving frequency;

[0150] The adopting the first communication mode to perform backscatter communication includes:

[0151] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one first transmission frequency to simultaneously transmit information.

[0152] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously on different sending frequencies;

[0153] The adopting the first communication mode to perform backscatter communication includes:

[0154] Determining at least one transmission frequency supported by the terminal for simultaneous transmission based on at least one offset value supported by the terminal;

[0155] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one transmission frequency supporting simultaneous transmission to simultaneously transmit information.

[0156] In conjunction with some embodiments of the fourth aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency supported by the terminal for simultaneous transmission;

[0157] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0158] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first communication mode includes: the sending frequency used by the terminal when performing backscatter communication is: the at least one sending frequency that supports simultaneous sending; the sending form used by the terminal when performing backscatter communication is: sending information simultaneously on different sending frequencies;

[0159] The adopting the first communication mode to perform backscatter communication includes:

[0160] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one transmission frequency supporting simultaneous transmission to simultaneously transmit information.

[0161] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously on different sending frequencies;

[0162] The adopting the first communication mode to perform backscatter communication includes:

[0163] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one transmission frequency supporting simultaneous transmission to simultaneously transmit information.

[0164] In conjunction with some embodiments of the fourth aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one offset value group supported by the terminal, the offset value group including multiple offset values, and the multiple transmission frequencies determined by the multiple offset values ​​in the offset value group support simultaneous transmission;

[0165] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0166] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first communication mode includes: a transmitting frequency used by the terminal when performing backscatter communication is: a second transmitting frequency; and a transmitting form used by the terminal when performing backscatter communication is: simultaneously transmitting information at different transmitting frequencies; wherein the second transmitting frequency is a transmitting frequency supported by the terminal for simultaneous transmission, and the second transmitting frequency is determined based on an offset value in a first offset value group and a receiving frequency used by the terminal when receiving electromagnetic waves, and the first offset value group is determined by the network device from at least one offset value group supported by the terminal;

[0167] The adopting the first communication mode to perform backscatter communication includes:

[0168] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one second transmission frequency to simultaneously transmit information.

[0169] In conjunction with some embodiments of the fourth aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency group supported by the terminal, the transmission frequency group including multiple transmission frequencies supported by the terminal for simultaneous transmission;

[0170] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0171] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first communication mode includes: a transmission frequency used by the terminal when performing backscatter communication is: a transmission frequency in a first frequency group; a transmission form used by the terminal when performing backscatter communication is: simultaneously sending information on different transmission frequencies; wherein the first frequency group is determined by the network device from at least one transmission frequency group supported by the terminal;

[0172] The adopting the first communication mode to perform backscatter communication includes:

[0173] The electromagnetic waves received by the terminals are simultaneously reflected on the transmission frequencies in the first frequency group to simultaneously transmit information.

[0174] In conjunction with some embodiments of the fourth aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one offset value supported by the terminal, the offset value being an offset between a transmission frequency supported by the terminal for frequency hopping transmission and a receiving frequency used by the terminal when receiving electromagnetic waves;

[0175] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0176] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first communication mode includes: a transmitting frequency used by the terminal when performing backscatter communication is: a first transmitting frequency; and a transmitting mode used by the terminal when performing backscatter communication is: frequency hopping to transmit information on different transmitting frequencies; wherein the first transmitting frequency is the transmitting frequency supporting frequency hopping transmission, and the first transmitting frequency is determined based on an offset value supported by the terminal and a receiving frequency used by the terminal when receiving electromagnetic waves;

[0177] The adopting the first communication mode to perform backscatter communication includes:

[0178] The electromagnetic waves received by the terminal are reflected by frequency hopping on at least one first transmission frequency to transmit information by frequency hopping.

[0179] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information on different sending frequencies;

[0180] The adopting the first communication mode to perform backscatter communication includes:

[0181] Determining at least one transmission frequency supported by the terminal for frequency hopping transmission based on at least one offset value supported by the terminal;

[0182] The electromagnetic waves received by the terminal are reflected by frequency hopping on at least one transmission frequency supporting frequency hopping transmission to transmit information by frequency hopping.

[0183] In conjunction with some embodiments of the fourth aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency supported by the terminal for frequency hopping transmission;

[0184] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0185] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first communication mode includes: the sending frequency used by the terminal when performing backscatter communication is: the at least one sending frequency supporting frequency hopping transmission; the sending form used by the terminal when performing backscatter communication is: frequency hopping to send information on different sending frequencies;

[0186] The adopting the first communication mode to perform backscatter communication includes:

[0187] The electromagnetic waves received by the terminal are reflected by frequency hopping on at least one transmission frequency supporting frequency hopping transmission to transmit information by frequency hopping.

[0188] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information on different sending frequencies;

[0189] The adopting the first communication mode to perform backscatter communication includes:

[0190] The electromagnetic waves received by the terminal are reflected by frequency hopping on at least one transmission frequency supporting frequency hopping transmission to transmit information by frequency hopping.

[0191] In conjunction with some embodiments of the fourth aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one offset value group supported by the terminal, the offset value group including multiple offset values, and the multiple transmission frequencies determined by the multiple offset values ​​in the offset value group supporting frequency hopping transmission;

[0192] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0193] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first communication mode includes: a transmitting frequency used by the terminal when performing backscatter communication is: a second transmitting frequency; and a transmitting mode used by the terminal when performing backscatter communication is: frequency hopping to transmit information on different transmitting frequencies; wherein the second transmitting frequency is a transmitting frequency supported by the terminal for frequency hopping transmission, and the second transmitting frequency is determined based on an offset value in a first offset value group and a receiving frequency used by the terminal when receiving electromagnetic waves, and the first offset value group is determined by the network device from at least one offset value group supported by the terminal;

[0194] The adopting the first communication mode to perform backscatter communication includes:

[0195] The electromagnetic waves received by the terminal are reflected by frequency hopping on at least one second transmission frequency to transmit information by frequency hopping.

[0196] In conjunction with some embodiments of the fourth aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency group supported by the terminal, the transmission frequency group including multiple transmission frequencies supported by the terminal for frequency hopping transmission;

[0197] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0198] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first communication mode includes: a transmission frequency used by the terminal when performing backscatter communication is: a transmission frequency in a first frequency group; a transmission form used by the terminal when performing backscatter communication is: frequency hopping to send information on different transmission frequencies; wherein the first frequency group is determined by the network device from at least one transmission frequency group supported by the terminal;

[0199] The adopting the first communication mode to perform backscatter communication includes:

[0200] The electromagnetic waves received by the terminal are reflected by frequency hopping on the transmission frequencies in the first frequency group to transmit information by frequency hopping.

[0201] In conjunction with some embodiments of the fourth aspect, in some embodiments, the at least one transmission frequency supported by the terminal includes: at least one third transmission frequency supported by the terminal for simultaneous transmission and at least one fourth transmission frequency supported by the terminal for frequency hopping transmission;

[0202] The transmission forms supported by the terminal include: the terminal supports simultaneous information transmission, and the terminal supports frequency hopping information transmission.

[0203] In combination with some embodiments of the fourth aspect, in some embodiments, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: the third sending frequency; the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously at different sending frequencies; or, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously at different sending frequencies.

[0204] With reference to some embodiments of the fourth aspect, in some embodiments, the adopting the first communication mode to perform backscatter communication includes:

[0205] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one third transmission frequency to simultaneously transmit information.

[0206] In combination with some embodiments of the fourth aspect, in some embodiments, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: the fourth sending frequency; the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information at different sending frequencies; or, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information at different sending frequencies.

[0207] With reference to some embodiments of the fourth aspect, in some embodiments, the adopting the first communication mode to perform backscatter communication includes:

[0208] The electromagnetic waves received by the terminal are reflected by frequency hopping on the at least one fourth transmission frequency to transmit information by frequency hopping.

[0209] In conjunction with some embodiments of the fourth aspect, in some embodiments, the frequency hopping information transmission includes:

[0210] Information is transmitted by frequency hopping based on a frequency hopping pattern.

[0211] In conjunction with some embodiments of the fourth aspect, in some embodiments, the terminal is further used for at least one of the following:

[0212] Determining the frequency hopping pattern based on protocol agreement;

[0213] receiving the frequency hopping pattern indicated by the network device;

[0214] Report at least one candidate frequency hopping pattern supported by the terminal to the network device, and receive the frequency hopping pattern indicated by the network device based on the at least one candidate frequency hopping pattern.

[0215] In conjunction with some embodiments of the fourth aspect, in some embodiments, the terminal is further configured to:

[0216] Determine a receiving frequency used by the terminal when receiving electromagnetic waves.

[0217] In a fifth aspect, an embodiment of the present disclosure provides a network device, including:

[0218] a processing module, configured to determine a first indication and / or a second indication; wherein the first indication is used to indicate at least one transmission frequency supported by the terminal, and the second indication is used to indicate a transmission form supported by the terminal; and the terminal is configured to implement backscatter communication;

[0219] The transceiver module is used to send first information to the terminal, where the first information is used to indicate a first communication mode. The first communication mode includes: a sending frequency used by the terminal for backscatter communication, and / or a sending form used by the terminal for backscatter communication.

[0220] In conjunction with some embodiments of the fifth aspect, in some embodiments, the processing module is further used for at least one of the following:

[0221] receiving the first indication and / or the second indication reported by the terminal;

[0222] The first indication and / or the second indication is determined from a core network based on the terminal identification of the terminal.

[0223] In conjunction with some embodiments of the fifth aspect, in some embodiments, the network device is further used for at least one of the following:

[0224] indicating a frequency hopping pattern to the terminal;

[0225] receiving at least one candidate frequency hopping pattern supported by the terminal and reported by the terminal, and indicating a frequency hopping pattern to the terminal based on the at least one candidate frequency hopping pattern.

[0226] In conjunction with some embodiments of the fifth aspect, in some embodiments, the network device is further configured to:

[0227] Determine a receiving frequency used by the terminal when receiving electromagnetic waves.

[0228] In a sixth aspect, an embodiment of the present disclosure proposes a communication device, which includes: one or more processors; one or more memories for storing instructions; wherein the processor is used to call the instructions so that the communication device executes the communication method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0229] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, which includes: a terminal and a network device; wherein the terminal is configured to execute the method described in the first aspect and the optional implementation of the first aspect, and the network device is configured to execute the method described in the second aspect and the optional implementation of the second aspect.

[0230] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the communication method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0231] In the ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the communication method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0232] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the communication method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0233] It is understandable that the above-mentioned terminals, network devices, communication devices, communication systems, storage media, program products, and computer programs are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0234] The present disclosure provides invention titles. In some embodiments, the terms "communication method" and "information processing method," "information sending method," and "information receiving method" are interchangeable; the terms "communication device" and "information processing device," "information sending device," and "information receiving device" are interchangeable; and the terms "information processing system," "communication system," "information sending system," and "information receiving system" are interchangeable.

[0235] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0236] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0237] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0238] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0239] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0240] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple", etc. can be used interchangeably.

[0241] In the embodiments of the present disclosure, descriptions such as “at least one of A, B, C…”, “A and / or B and / or C…”, etc. include the situation where any one of A, B, C… exists alone, and also include any combination of any multiple of A, B, C…, and each situation can exist alone; for example, “at least one of A, B, C” includes the situation where A exists alone, B exists alone, C exists alone, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C; for example, A and / or B includes the situation where A exists alone, B exists alone, and the combination of A and B.

[0242] In some embodiments, descriptions such as "in one case A, in another case B," or "in response to one case A, in response to another case B," may include the following technical solutions depending on the situation: executing A independently of B (in some embodiments, A); executing B independently of A (in some embodiments, B); selectively executing A and B (in some embodiments, selecting between A and B); and executing both A and B (in some embodiments, A and B). The same applies when there are more branches, such as A, B, and C.

[0243] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0244] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0245] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0246] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0247] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0248] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0249] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0250] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0251] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, it can also be called device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, language such as "uplink" and "downlink" can also be replaced by language corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0252] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0253] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0254] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0255] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0256] The correspondences shown in the tables of the present disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values, which are not limited by the present disclosure. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, in the tables of the present disclosure, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also adopt other names that can be understood by the communication device, and the values ​​or representations of the parameters may also adopt other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures may also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

[0257] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0258] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1, the communication system 100 may include a terminal and a network device. Optionally, the network device may include at least one of an access network device and a core network device.

[0259] In some embodiments, the terminal includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0260] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0261] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0262] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0263] In some embodiments, the core network device may be a device including one or more network elements, or may be multiple devices or a group of devices, each including all or part of one or more network elements. The network element may be virtual or physical. The core network, for example, includes at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC). Alternatively, the core network device may also be a location management function network element. Exemplarily, the location management function network element includes a location server (location server), which may be implemented as any one of the following: Location Management Function (LMF), Enhanced Serving Mobile Location Centre (E-SMLC), Secure User Plane Location (SUPL), and Secure User Plane Location Platform (SUPLLP).

[0264] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0265] The following embodiments of the present disclosure may be applied to the communication system 100 shown in Figure 1, or a portion thereof, but are not limited thereto. The entities shown in Figure 1 are illustrative only. The communication system may include all or part of the entities shown in Figure 1, or may include other entities outside of Figure 1. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0266] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0267] Optionally, in a communication system, when backscattering communication is performed, it is usually necessary to provide an energy source (continuous wave node, CW node), which can be used to emit electromagnetic waves (continuous wave, CW), and for the terminal (or device) of backscattering communication, it will receive the electromagnetic waves emitted by the energy source and reflect the electromagnetic waves. When reflecting the electromagnetic waves, the terminal can superimpose the information to be sent on the reflected electromagnetic waves by changing the frequency, phase and amplitude of the reflected electromagnetic waves to achieve the purpose of sending information, thereby realizing backscattering communication.

[0268] Optionally, the energy source may be a separate node, or a base station communicating with the terminal, or an intermediate node communicating with the terminal (such as another terminal). Optionally, the frequency of the electromagnetic wave emitted by the energy source may be a constant amplitude, and the transmitting frequency used when the terminal reflects the electromagnetic wave may be the same as the receiving frequency used when the terminal receives the electromagnetic wave (i.e., the frequency of the electromagnetic wave emitted by the energy source), or the transmitting frequency used when the terminal reflects the electromagnetic wave may be offset from the receiving frequency used when the terminal receives the electromagnetic wave, wherein the magnitude of the offset value is related to the hardware characteristics of the terminal. Optionally, the offset value may be a fixed value, or the offset value may be dynamically adjusted.

[0269] Optionally, in some embodiments, the terminal generally needs to use a spectrum to send information, wherein the available spectrum is generally divided into multiple sub-channels, different sub-channels correspond to different transmission frequencies, and the above-mentioned backscatter communication terminal (or device) can use at least one transmission frequency to reflect electromagnetic waves, wherein which transmission frequencies the terminal can use to reflect electromagnetic waves depends on the receiving frequency used by the terminal when receiving electromagnetic waves and the offset value supported by the terminal, wherein the sum or difference of the receiving frequency of the terminal and the offset value supported by the terminal is the frequency of the electromagnetic wave that the terminal can reflect.

[0270] Optionally, current backscattering is used for short-range communication, and the terminal will only use one transmission frequency to reflect electromagnetic waves (that is, only send information through one transmission frequency). However, long-distance communication has been introduced for backscattering. When performing long-distance backscattering communication, if the terminal still only uses one transmission frequency to reflect electromagnetic waves, the reliability and communication performance of long-distance communication will be greatly reduced. Therefore, how to improve the communication reliability and communication performance during long-distance backscattering communication is a technical problem that needs to be solved urgently. An optional method is that when the terminal supports multiple offset values, the terminal can determine the transmission frequency supported by the terminal for reflecting electromagnetic waves based on the multiple offset values, and then the terminal can reflect electromagnetic waves on the multiple transmission frequencies (that is, send information through multiple transmission frequencies). However, how this method is specifically implemented has not yet been clarified.

[0271] FIG2A is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2A , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0272] Step 2101: The terminal reports a first indication and / or a second indication, where the first indication is used to indicate at least one offset value supported by the terminal, and the second indication is used to indicate that the terminal supports simultaneous information transmission on different transmission frequencies.

[0273] Optionally, the terminal may be a terminal for implementing backscatter communication. Optionally, "implementing backscatter communication" may include: the terminal receiving electromagnetic waves (i.e., receiving electromagnetic waves emitted by the aforementioned energy source) and transmitting information by reflecting the electromagnetic waves. For a detailed introduction to this part, please refer to the description of the embodiment in FIG. 2A.

[0274] Optionally, in some embodiments, the transmitting frequency used by the terminal when reflecting electromagnetic waves is the same as the receiving frequency used by the terminal when receiving electromagnetic waves, and / or the transmitting frequency used by the terminal when reflecting electromagnetic waves is offset from the receiving frequency used by the terminal when receiving electromagnetic waves. Optionally, the receiving frequency used by the terminal when receiving electromagnetic waves may be the frequency of the electromagnetic waves emitted by the energy source, and the transmitting frequency used by the terminal when reflecting electromagnetic waves may be the frequency of the electromagnetic waves obtained after the terminal reflects the received electromagnetic waves.

[0275] Optionally, in some embodiments, the above-mentioned offset value can be the offset between the sending frequency supported by the terminal for simultaneous transmission and the receiving frequency used by the terminal when receiving electromagnetic waves. For example, the offset value can be the difference between the sending frequency supported by the terminal for simultaneous transmission and the receiving frequency of the terminal, or the offset value can be the difference between the receiving frequency of the terminal and the sending frequency supported by the terminal for simultaneous transmission.

[0276] Optionally, the aforementioned "transmitting frequencies supporting simultaneous transmission" can be understood as meaning that the terminal can simultaneously perform backscattering on the transmit frequencies supporting simultaneous transmission to transmit information. For example, if the transmit frequencies supporting simultaneous transmission include frequency #1 and frequency #2, then upon receiving electromagnetic waves, the terminal can simultaneously perform backscattering on the received electromagnetic waves at frequency #1 and frequency #2 to simultaneously transmit information. Optionally, the time domain resources corresponding to the different transmit frequencies supporting simultaneous transmission are the same.

[0277] Optionally, the terminal may report the first indication and / or the second indication to the network device, and the network device may receive the first indication and / or the second indication.

[0278] It should be noted that in some embodiments, step 2101 may be optional and may or may not be performed. Alternatively, if the terminal has configured in the core network during the operator card activation process which transmission frequencies the terminal supports simultaneous transmission, and if the terminal supports simultaneous transmission of information on different transmission frequencies, then the terminal does not need to perform step 2101.

[0279] Step 2102: The network device determines a first indication and / or a second indication, where the first indication is used to indicate at least one offset value supported by the terminal, and the second indication is used to indicate that the terminal supports simultaneous transmission of information on different transmission frequencies.

[0280] Optionally, in some embodiments, the network device may receive the first indication and / or the second indication reported by the terminal.

[0281] Optionally, in other embodiments, if the terminal has set in the core network during the operator's card activation process which transmission frequencies the terminal supports simultaneous transmission, and the terminal supports simultaneous information transmission on different transmission frequencies, the network device can also determine the first indication and / or the second indication directly from the core network based on the terminal identification of the terminal. Optionally, the terminal identification can be reported by the terminal to the network device.

[0282] Step 2103: The network device determines at least one first sending frequency.

[0283] Optionally, the first sending frequency may be a sending frequency supported by the terminal for simultaneous sending. For a detailed description of “the sending frequency supported for simultaneous sending”, reference may be made to the description of the above embodiment.

[0284] Optionally, the first transmission frequency may be determined based on an offset value supported by the terminal and a receiving frequency used by the terminal when receiving electromagnetic waves. Specifically, the network device may first determine the receiving frequency used by the terminal when receiving electromagnetic waves. The receiving frequency used by the terminal when receiving electromagnetic waves may be reported by the terminal to the network device or may be predefined based on a protocol. The network device then determines at least one first transmission frequency based on the receiving frequency of the terminal and at least one offset value reported by the terminal. Optionally, in some embodiments, the method for a network device to determine at least one first transmitting frequency based on the receiving frequency of the terminal and at least one offset value reported by the terminal may include: when the terminal does not adopt a double-sideband modulation method for the frequency domain offset of the electromagnetic wave, the network device may determine the sum or difference of the receiving frequency of the terminal and the offset value as the first transmitting frequency, and at this time, one offset value may determine a first transmitting frequency; when the terminal adopts a double-sideband modulation method for the frequency domain offset of the electromagnetic wave, the network device may determine the sum and difference of the receiving frequency of the terminal and the offset value as the first transmitting frequency, respectively, and at this time, one offset value may determine two first transmitting frequencies, and the two first transmitting frequencies determined based on the same offset value are symmetrical with each other with the receiving frequency of the terminal as the center.

[0285] Step 2104: The network device sends first information, which is used to indicate a first communication mode. The first communication mode includes: the sending frequency used by the terminal when performing backscatter communication is: the first sending frequency; the sending form used by the terminal when performing backscatter communication is: sending information simultaneously on different sending frequencies.

[0286] Optionally, the network device may send the first information to the terminal, and the terminal may receive the first information.

[0287] Optionally, in some embodiments, when determining the aforementioned "transmission frequency used by the terminal for backscatter communication," the network device may select the frequency from at least one transmission frequency supported by the terminal. Optionally, the "transmission frequency used by the terminal for backscatter communication" indicated by the network device may be part or all of the at least one transmission frequency supported by the terminal (e.g., transmission frequencies that support simultaneous transmission). Furthermore, when determining the aforementioned "transmission form used by the terminal for backscatter communication," the network device may select the frequency from at least one transmission form supported by the terminal. Optionally, the "transmission form used by the terminal for backscatter communication" indicated by the network device may be any one of the at least one transmission form supported by the terminal.

[0288] Optionally, the "transmission frequency used by the terminal when performing backscatter communication" and the "transmission mode used by the terminal when performing backscatter communication" indicated by the network device should correspond to each other. For example, when the transmission frequency used by the terminal when performing backscatter communication as instructed by the network device is a transmission frequency that supports simultaneous transmission, the transmission mode used by the terminal when performing backscatter communication as instructed by the network device should be simultaneous transmission; when the transmission frequency used by the terminal when performing backscatter communication as instructed by the network device is a transmission frequency that supports frequency hopping transmission, the transmission mode used by the terminal when performing backscatter communication as instructed by the network device should be frequency hopping transmission. For an introduction to "frequency hopping transmission," please refer to the subsequent embodiment of FIG. 2G.

[0289] Step 2105: The terminal simultaneously reflects the electromagnetic waves received by the terminal at at least one first transmission frequency to simultaneously send information.

[0290] Optionally, the method in which the terminal simultaneously reflects electromagnetic waves received by the terminal on at least one first transmitting frequency to simultaneously send information may include: assuming that the information that the terminal needs to send is information #1, and the information #1 contains N bits, the terminal can simultaneously reflect electromagnetic waves on at least one first transmitting frequency, and the information carried by the electromagnetic waves reflected on each first transmitting frequency is N bits of the information #1. Alternatively, optionally, the N bits of the information #1 can be divided into F sub-bits in sequence, where F is a positive integer and F is less than or equal to the number of first transmitting frequencies. After that, the terminal can simultaneously send the sub-bits of the information #1 separately on different first transmitting frequencies by backscattering. For example, assuming that two first transmitting frequencies are determined, namely the first transmitting frequency #1 and the first transmitting frequency #2, the information #1 can be divided into two sub-bits, such as the first N / 2 bits of the information #1 can be divided into sub-bit #1, and the last N / 2 bits of the information #1 can be divided into sub-bit #2, and electromagnetic waves can be reflected on the first transmitting frequency #1 and the first transmitting frequency #2 at the same time, so that the information carried by the electromagnetic wave reflected on the first transmitting frequency #1 is: sub-bit #1, and the information carried by the electromagnetic wave reflected on the first transmitting frequency #2 is: sub-bit #2.

[0291] The following is an example of the embodiment of FIG2A:

[0292] Assume that the first indication reported by the terminal to the network device is used to indicate that at least one offset value supported by the terminal is: delta1 ,f delta2 , and the second indication reported by the terminal to the network device is used to indicate that the terminal supports sending information simultaneously on different transmission frequencies. And, assuming that the receiving frequency used by the terminal to receive electromagnetic waves is fc, then based on the offset value f delta1 ,f delta2Two first transmission frequencies can be determined, and the two first transmission frequencies are: fc+f delta1 ,fc+f delta2 At this time, the first communication mode indicated by the first information sent by the network device to the terminal may include: the sending frequency used by the terminal for backscatter communication is: fc+f delta1 ,fc+f delta2 ; The transmission form adopted by the terminal for backscatter communication is to send information at different transmission frequencies simultaneously. Then the terminal can delta1 ,fc+f delta2 Backscattering is performed simultaneously on the CMOS to send information simultaneously.

[0293] In the above embodiment, a method is provided for a terminal to perform simultaneous backscatter transmission on at least one transmission frequency, so that the terminal can perform simultaneous backscatter transmission on at least one transmission frequency. Simultaneous backscatter transmission on at least one transmission frequency means that the same information is simultaneously backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times simultaneously. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing backscattering over long distances, thereby guaranteeing communication quality.

[0294] The communication method according to the embodiments of the present disclosure may include at least one of steps 2101 to 2105. For example, step 2101 may be implemented as an independent embodiment, step 2102 may be implemented as an independent embodiment, step 2103 may be implemented as an independent embodiment, and step 2101+step 2102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0295] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0296] FIG2B is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2B , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0297] Step 2201: The terminal reports a first indication and / or a second indication, where the first indication is used to indicate at least one offset value supported by the terminal, and the second indication is used to indicate that the terminal supports simultaneous transmission of information on different transmission frequencies.

[0298] Step 2202: The network device determines a first indication and / or a second indication, where the first indication is used to indicate at least one offset value supported by the terminal, and the second indication is used to indicate that the terminal supports simultaneous transmission of information on different transmission frequencies.

[0299] For detailed description of steps 2201 - 2202 , please refer to the above embodiment.

[0300] Step 2203: The network device sends first information, where the first information is used to indicate a first communication mode. The first communication mode includes: a sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously at different sending frequencies.

[0301] Optionally, the network device may send the first information to the terminal, and the terminal may receive the first information.

[0302] Step 2204: The terminal determines at least one transmission frequency supported by the terminal for simultaneous transmission based on at least one offset value supported by the terminal.

[0303] Optionally, when the terminal does not adopt double-sideband modulation for the frequency domain offset of the electromagnetic wave, the terminal can determine the sum or difference of the receiving frequency used by the terminal when receiving the electromagnetic wave and the offset value as the transmitting frequency supported by the terminal for simultaneous transmission. At this time, one offset value can determine one transmitting frequency; when the terminal adopts double-sideband modulation for the frequency domain offset of the electromagnetic wave, the network device can determine the sum and difference of the receiving frequency used by the terminal when receiving the electromagnetic wave and the offset value as the transmitting frequency supported by the terminal for simultaneous transmission. At this time, one offset value can determine two transmitting frequencies, and the two transmitting frequencies determined based on the same offset value are symmetrical with each other with the receiving frequency of the terminal as the center.

[0304] Step 2205: The terminal simultaneously reflects the electromagnetic waves received by the terminal on at least one transmission frequency that supports simultaneous transmission to simultaneously send information.

[0305] For the relevant introduction about “simultaneous transmission”, please refer to the description of the aforementioned embodiment.

[0306] The following is an example of the embodiment of FIG2B:

[0307] Assume that the first indication reported by the terminal to the network device is used to indicate that at least one offset value supported by the terminal is: delta1 ,f delta2 , and the second indication reported by the terminal to the network device is used to indicate that the terminal supports sending information simultaneously on different transmission frequencies. And, assuming that the receiving frequency used by the terminal to receive electromagnetic waves is fc, then based on the offset value f delta1 ,f delta2It can be determined that the terminal supports two transmission frequencies for simultaneous transmission, and the two transmission frequencies are: fc+f delta1 ,fc+f delta2 At this time, the first communication mode indicated by the first information sent by the network device to the terminal may include: the sending form adopted by the terminal when performing backscatter communication is: sending information at different sending frequencies at the same time, then the terminal can delta1 ,fc+f delta2 Backscattering is performed simultaneously on the CMOS to send information simultaneously.

[0308] In the above embodiment, a method is provided for a terminal to perform simultaneous backscatter transmission on at least one transmission frequency, so that the terminal can perform simultaneous backscatter transmission on at least one transmission frequency. Simultaneous backscatter transmission on at least one transmission frequency means that the same information is simultaneously backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times simultaneously. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing backscattering over long distances, thereby guaranteeing communication quality.

[0309] The communication method according to the embodiments of the present disclosure may include at least one of steps 2201 to 2205. For example, step 2201 may be implemented as an independent embodiment, step 2202 may be implemented as an independent embodiment, step 2203 may be implemented as an independent embodiment, and step 2201+S2202 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0310] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0311] FIG2C is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2C , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0312] Step 2301: The terminal reports a first indication and / or a second indication, where the first indication is used to indicate that the terminal supports at least one transmission frequency for simultaneous transmission, and the second indication is used to indicate that the terminal supports simultaneous transmission of information on different transmission frequencies.

[0313] Step 2302: The network device determines a first indication and / or a second indication, where the first indication is used to indicate that the terminal supports at least one transmission frequency for simultaneous transmission, and the second indication is used to indicate that the terminal supports simultaneous transmission of information on different transmission frequencies.

[0314] For detailed description of steps 2301 - 2302 , please refer to the above embodiment.

[0315] Step 2303: The network device sends first information, which is used to indicate a first communication mode. The first communication mode includes: the sending frequency used by the terminal when performing backscatter communication is: at least one sending frequency that supports simultaneous sending; the sending form used by the terminal when performing backscatter communication is: sending information simultaneously on different sending frequencies.

[0316] Optionally, the network device may send the first information to the terminal, and the terminal may receive the first information.

[0317] Step 2304: The terminal simultaneously reflects the electromagnetic waves received by the terminal on at least one transmission frequency that supports simultaneous transmission to simultaneously send information.

[0318] For detailed description of this part, please refer to the above embodiments.

[0319] The following is an example of the embodiment of FIG2C:

[0320] Assume that a first indication reported by a terminal to a network device indicates that the terminal supports at least one simultaneous transmission frequency of f1 and f2, and that a second indication reported by the terminal to the network device indicates that the terminal supports simultaneous information transmission at different transmission frequencies. In this case, the first communication mode indicated by the first information sent by the network device to the terminal may include: the transmission frequencies used by the terminal for backscatter communication are f1 and f2; and the transmission mode used by the terminal for backscatter communication is: simultaneous information transmission at different transmission frequencies. In this case, the terminal may perform backscattering on both f1 and f2 to simultaneously transmit information.

[0321] In the above embodiment, a method is provided for a terminal to perform simultaneous backscatter transmission on at least one transmission frequency, so that the terminal can perform simultaneous backscatter transmission on at least one transmission frequency. Simultaneous backscatter transmission on at least one transmission frequency means that the same information is simultaneously backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times simultaneously. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing backscattering over long distances, thereby guaranteeing communication quality.

[0322] The communication method according to the embodiments of the present disclosure may include at least one of steps 2301 to 2305. For example, step 2301 may be implemented as an independent embodiment, step 2302 may be implemented as an independent embodiment, step 2303 may be implemented as an independent embodiment, and step 2301+step 2302 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0323] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0324] FIG2D is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2D , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0325] Step 2401: The terminal reports a first indication and / or a second indication, where the first indication is used to indicate that the terminal supports at least one transmission frequency for simultaneous transmission, and the second indication is used to indicate that the terminal supports simultaneous transmission of information on different transmission frequencies.

[0326] Step 2402: The network device determines a first indication and / or a second indication, where the first indication is used to indicate that the terminal supports at least one transmission frequency for simultaneous transmission, and the second indication is used to indicate that the terminal supports simultaneous transmission of information on different transmission frequencies.

[0327] Step 2403: The network device sends first information, where the first information is used to indicate a first communication mode. The first communication mode includes: a sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously at different sending frequencies.

[0328] Step 2404: The terminal simultaneously reflects the electromagnetic waves received by the terminal on at least one transmission frequency that supports simultaneous transmission to simultaneously send information.

[0329] For detailed description of steps 2401 - 2404 , please refer to the above embodiment.

[0330] The following is an example of the embodiment of FIG2C:

[0331] Assume that a first indication reported by a terminal to a network device indicates that the terminal supports at least one transmission frequency f1 and f2 for simultaneous transmission, and that a second indication reported by the terminal to the network device indicates that the terminal supports simultaneous information transmission at different transmission frequencies. In this case, the first communication mode indicated by the first information sent by the network device to the terminal may include: the transmission mode adopted by the terminal during backscatter communication is: simultaneous information transmission at different transmission frequencies. In this case, the terminal may perform backscattering on both f1 and f2 to simultaneously transmit information.

[0332] In the above embodiment, a method is provided for a terminal to perform simultaneous backscatter transmission on at least one transmission frequency, so that the terminal can perform simultaneous backscatter transmission on at least one transmission frequency. Simultaneous backscatter transmission on at least one transmission frequency means that the same information is simultaneously backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times simultaneously. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing backscattering over long distances, thereby guaranteeing communication quality.

[0333] The communication method involved in the embodiments of the present disclosure may include at least one of steps 2401 to 2405. For example, step 2401 may be implemented as an independent embodiment, step 2402 may be implemented as an independent embodiment, step 2403 may be implemented as an independent embodiment, and step 2401+S2402 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0334] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0335] FIG2E is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2E , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0336] Step 2501: The terminal reports a first indication and / or a second indication, where the first indication is used to indicate at least one offset value group supported by the terminal, and the second indication is used to indicate that the terminal supports simultaneous transmission of information on different transmission frequencies.

[0337] Optionally, the offset value group may include multiple offset values, and the multiple offset values ​​may be used to determine multiple transmission frequencies. For a specific method of determining the transmission frequency based on the offset value, reference may be made to the description of the aforementioned embodiment.

[0338] Optionally, in some embodiments, multiple transmission frequencies determined by multiple offset values ​​in the same offset value group support simultaneous transmission.

[0339] Step 2502: The network device determines a first indication and / or a second indication, where the first indication is used to indicate at least one offset value group supported by the terminal, and the second indication is used to indicate that the terminal supports simultaneous transmission of information on different transmission frequencies.

[0340] For further detailed description of steps 2501 - 2502 , please refer to the above embodiment.

[0341] Step 2503: The network device determines a first offset value group from at least one offset value group supported by the terminal and determines at least one second transmission frequency based on the first offset value group.

[0342] Optionally, the first offset value group may be any one of at least one offset value group supported by the terminal.

[0343] For example, it is assumed that the first indication in the above step 2501 is used to indicate that the terminal supports four offset value groups, and the four offset value groups are: Offset value group #1: (f delta1 ,f delta2 ), offset value group #2: (f delta3 ,f delta4 ), offset value group #3: (f delta1 ,f delta4 ), offset value group #4: (f delta2 ,f delta3 ). The network device can determine the first offset value group from the four offset value groups. For example, the first offset value group can be: offset value group #3: (f delta1 ,f delta4 ).

[0344] Optionally, the second transmission frequency is essentially a transmission frequency supported by the terminal for simultaneous transmission. The second transmission frequency can be determined based on the offset values ​​in the first offset value group and the receiving frequency used by the terminal when receiving electromagnetic waves. For example, the second transmission frequency can be the sum or difference of the offset values ​​in the first offset value group and the receiving frequency of the terminal. The method for determining the second transmission frequency based on the offset value is the same as the method for determining the first transmission frequency based on the offset value in the aforementioned embodiment and is not further described here.

[0345] For example, assume that the first offset value group is: Offset value group #3: (f delta1 ,f delta4 ), then two second transmission frequencies can be determined based on the first offset value group, and the two second transmission frequencies can be respectively: delta1 ,fc+f delta4, where fc is the receiving frequency used by the terminal to receive electromagnetic waves.

[0346] Step 2504: The network device sends first information, which is used to indicate a first communication mode. The first communication mode includes: the sending frequency used by the terminal when performing backscatter communication is: the second sending frequency; the sending form used by the terminal when performing backscatter communication is: sending information simultaneously on different sending frequencies.

[0347] Step 2505: The terminal simultaneously reflects the electromagnetic waves received by the terminal on at least one second transmission frequency to simultaneously send information.

[0348] For a detailed description of step 2505 , please refer to the above embodiment.

[0349] The following is an example of the embodiment of FIG2E:

[0350] Assume that the first indication reported by the terminal to the network device is used to indicate at least one offset value group supported by the terminal: Offset value group #1: (f delta1 ,f delta2 ), offset value group #2: (f delta3 ,f delta4 ), offset value group #3: (f delta1 ,f delta4 ), offset value group #4: (f delta2 ,f delta3 ), and the second indication reported by the terminal to the network device is used to indicate that the terminal supports simultaneous transmission of information on different transmission frequencies. In addition, the first offset value group determined by the network device is: Offset value group #3: (f delta1 ,f delta4 ), then based on offset value group #3: (f delta1 ,f delta4 ) can determine two second transmission frequencies, the two second transmission frequencies are: fc+f delta1 , fc+f delta4 , where fc is the receiving frequency used by the terminal when receiving electromagnetic waves. At this time, if the first communication mode indicated by the network device includes: the sending frequency used by the terminal when performing backscatter communication is: fc+f delta1 , fc+f delta4 ; The transmission form adopted by the terminal for backscatter communication is to send information at different transmission frequencies simultaneously. Then the terminal can delta1 and fc+f delta4 Backscattering is performed simultaneously on the CMOS to send information simultaneously.

[0351] It should be noted that in some embodiments, the first communication mode indicated by the network device in step 2504 may also include: the terminal using a transmission frequency determined by the offset values ​​in the first offset value group when performing backscatter communication; and the terminal using a transmission mode of simultaneously transmitting information at different transmission frequencies when performing backscatter communication. In this case, the terminal may determine at least one second transmission frequency based on the offset values ​​in the first offset value group and simultaneously transmit information at the at least one second transmission frequency. In this case, the network device does not need to perform the step of "determining at least one second transmission frequency based on the first offset value group", and instead the terminal performs the step of "determining at least one second transmission frequency based on the first offset value group".

[0352] In the above embodiment, a method is provided for a terminal to perform simultaneous backscatter transmission on at least one transmission frequency, so that the terminal can perform simultaneous backscatter transmission on at least one transmission frequency. Simultaneous backscatter transmission on at least one transmission frequency means that the same information is simultaneously backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times simultaneously. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing backscattering over long distances, thereby guaranteeing communication quality.

[0353] The communication method involved in the embodiments of the present disclosure may include at least one of steps 2501 to 2505. For example, step 2501 may be implemented as an independent embodiment, step 2502 may be implemented as an independent embodiment, step 2503 may be implemented as an independent embodiment, and step 2501+S2502 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0354] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0355] FIG2F is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2F , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0356] Step 2601: The terminal reports a first indication and / or a second indication, where the first indication is used to indicate at least one transmission frequency group supported by the terminal, and the second indication is used to indicate that the terminal supports simultaneous information transmission on different transmission frequencies.

[0357] Optionally, the frequency group may include multiple transmission frequencies supported by the terminal for simultaneous transmission, wherein the relevant introduction to “transmission frequencies supported by the terminal for simultaneous transmission” may refer to the description of the aforementioned embodiment.

[0358] Step 2602: The network device determines a first indication and / or a second indication, where the first indication is used to indicate at least one transmission frequency group supported by the terminal, and the second indication is used to indicate that the terminal supports simultaneous transmission of information on different transmission frequencies.

[0359] For further detailed description of steps 2601 - 2602 , please refer to the above embodiment.

[0360] Step 2603: The network device determines a first frequency group from at least one transmission frequency group supported by the terminal.

[0361] Optionally, the first frequency group may be any one of at least one transmission frequency group supported by the terminal.

[0362] For example, assuming that the first indication in step 2601 is used to indicate that the terminal supports four frequency groups, the four frequency groups are: frequency group #1: (f1, f2), frequency group #2: (f3, f4), frequency group #3: (f1, f4), and frequency group #4: (f2, f3). The network device can then determine a first frequency group from the four frequency groups. For example, the first frequency group can be: frequency group #1: (f1, f2).

[0363] Step 2604: The network device sends first information, which is used to indicate a first communication mode. The first communication mode includes: the sending frequency used by the terminal when performing backscatter communication is: the sending frequency in the first frequency group; the sending form used by the terminal when performing backscatter communication is: sending information simultaneously on different sending frequencies.

[0364] Step 2605: The terminal simultaneously reflects the electromagnetic waves received by the terminal at the transmission frequencies in the first frequency group to simultaneously send information.

[0365] For a detailed description of step 2605 , please refer to the above embodiment.

[0366] The following is an example of the embodiment of FIG2F:

[0367] Assume that the first indication reported by the terminal to the network device is used to indicate that the at least one transmission frequency group supported by the terminal is: frequency group #1: (f1, f2), frequency group #2: (f3, f4), frequency group #3: (f1, f4), frequency group #4: (f2, f3), and the second indication reported by the terminal to the network device is used to indicate that the terminal supports simultaneous information transmission on different transmission frequencies. In addition, the first frequency group determined by the network device is: frequency group #1: (f1, f2). At this time, if the first communication method indicated by the network device includes: the transmission frequency used by the terminal when performing backscatter communication is: the transmission frequency in frequency group #1; the transmission form used by the terminal when performing backscatter communication is: simultaneous information transmission on different transmission frequencies. Then the terminal can perform backscattering on f1 and f2 simultaneously to send information simultaneously.

[0368] In the above embodiment, a method is provided for a terminal to perform simultaneous backscatter transmission on at least one transmission frequency, so that the terminal can perform simultaneous backscatter transmission on at least one transmission frequency. Simultaneous backscatter transmission on at least one transmission frequency means that the same information is simultaneously backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times simultaneously. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing backscattering over long distances, thereby guaranteeing communication quality.

[0369] The communication method involved in the embodiments of the present disclosure may include at least one of steps 2601 to 2605. For example, step 2601 may be implemented as an independent embodiment, step 2602 may be implemented as an independent embodiment, step 2603 may be implemented as an independent embodiment, and step 2601+S2602 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0370] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0371] FIG2G is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2G , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0372] Step 2701: The terminal reports a first indication and / or a second indication, where the first indication is used to indicate at least one offset value supported by the terminal, and the second indication is used to indicate that the terminal supports frequency hopping to send information on different transmission frequencies.

[0373] Optionally, in some embodiments, the above-mentioned offset value can be the offset between the sending frequency supported by the terminal for frequency hopping transmission and the receiving frequency used when the terminal receives electromagnetic waves. For example, the offset value can be the difference between the sending frequency supported by the terminal for frequency hopping transmission and the receiving frequency of the terminal, or the offset value can be the difference between the receiving frequency of the terminal and the sending frequency supported by the terminal for frequency hopping transmission.

[0374] Optionally, the above-mentioned "frequency hopping transmission" may refer to: using different frequency domain resources on different time domain resources (such as continuous time domain resources) to send information. That is, the above-mentioned "transmission frequency supporting frequency hopping transmission" can be understood as: the terminal can perform backscattering separately (that is, not at the same time) on the transmission frequency supporting frequency hopping transmission to send information. For example, if the terminal supports the transmission frequency of frequency hopping transmission including frequency #1 and frequency #2, the time domain resources corresponding to frequency #1 and frequency #2 are different, wherein the time domain resource corresponding to frequency #1 is time domain resource #1, and the time domain resource corresponding to frequency #2 is time domain resource #2, then after the terminal receives the electromagnetic wave, it can backscatter the received electromagnetic wave on time domain resource #1 according to frequency #1, and backscatter the received electromagnetic wave on time domain resource #2 according to frequency #2. Optionally, the time domain resources corresponding to different transmission frequencies supporting frequency hopping transmission are different.

[0375] It should be noted that some materials understand "frequency hopping transmission" as: transmission through discontinuous frequency domain resources. In this regard, it should be known that the understanding of "frequency hopping transmission" in this disclosure is not "transmission through discontinuous frequency domain resources", but "using different frequency domain resources to send information on different time domain resources."

[0376] Step 2702: The network device determines a first indication and / or a second indication, where the first indication is used to indicate at least one offset value supported by the terminal, and the second indication is used to indicate that the terminal supports frequency hopping to send information on different transmission frequencies.

[0377] For other detailed descriptions of steps 2701-2702, please refer to the above embodiments.

[0378] Step 2703: The network device determines at least one first sending frequency.

[0379] Optionally, the first sending frequency may be a sending frequency supported by the terminal for frequency hopping transmission.

[0380] Optionally, the first transmission frequency may be determined based on an offset value supported by the terminal and a receiving frequency used by the terminal when receiving electromagnetic waves. Specifically, the network device may first determine the receiving frequency used by the terminal when receiving electromagnetic waves. The receiving frequency used by the terminal when receiving electromagnetic waves may be reported by the terminal to the network device or may be predefined based on a protocol. The network device may then determine at least one first transmission frequency based on the receiving frequency of the terminal and at least one offset value reported by the terminal. Optionally, in some embodiments, the method for a network device to determine at least one first transmitting frequency based on the receiving frequency of the terminal and at least one offset value reported by the terminal may include: when the terminal does not adopt a double-sideband modulation method for the frequency domain offset of the electromagnetic wave, the network device may determine the sum or difference of the receiving frequency of the terminal and the offset value as the first transmitting frequency, and at this time, one offset value may determine a first transmitting frequency; when the terminal adopts a double-sideband modulation method for the frequency domain offset of the electromagnetic wave, the network device may determine the sum and difference of the receiving frequency of the terminal and the offset value as the first transmitting frequency, respectively, and at this time, one offset value may determine two first transmitting frequencies, and the two first transmitting frequencies determined based on the same offset value are symmetrical with each other with the receiving frequency of the terminal as the center.

[0381] Step 2704: The network device sends first information, which is used to indicate a first communication mode. The first communication mode includes: the sending frequency used by the terminal when performing backscatter communication is: the first sending frequency; the sending form used by the terminal when performing backscatter communication is: frequency hopping to send information on different sending frequencies.

[0382] Optionally, in some embodiments, when determining the aforementioned "transmission frequency used by the terminal for backscatter communication," the network device may select from at least one transmission frequency supported by the terminal. Optionally, the "transmission frequency used by the terminal for backscatter communication" indicated by the network device may be part or all of the at least one transmission frequency supported by the terminal (e.g., a transmission frequency supporting frequency hopping transmission). Furthermore, when determining the aforementioned "transmission form used by the terminal for backscatter communication," the network device may select from at least one transmission form supported by the terminal. Optionally, the "transmission form used by the terminal for backscatter communication" indicated by the network device may be any one of the at least one transmission form supported by the terminal.

[0383] Optionally, the "transmitting frequency used by the terminal when performing backscatter communication" and the "transmitting form used by the terminal when performing backscatter communication" indicated by the network device should correspond to each other. For example, when the transmitting frequency used by the terminal indicated by the network device for backscatter communication is: a transmitting frequency that supports frequency hopping transmission, the transmitting form used by the terminal indicated by the network device for backscatter communication should be: frequency hopping transmission; when the transmitting frequency used by the terminal indicated by the network device for backscatter communication is: a transmitting frequency that supports simultaneous transmission, the transmitting form used by the terminal indicated by the network device for backscatter communication should be: simultaneous transmission.

[0384] Step 2705: The terminal determines the frequency hopping pattern.

[0385] Optionally, the frequency hopping pattern may be a transmission pattern adopted by the terminal when frequency hopping is used to transmit information. For example, the frequency hopping pattern may indicate the positions of frequency domain units occupied by the terminal when frequency hopping is used to transmit information.

[0386] Optionally, the frequency hopping pattern may be determined by the terminal based on a protocol agreement, or the frequency hopping pattern may be indicated to the terminal by a network device, or the terminal may first report at least one alternative frequency hopping pattern supported by the terminal to the network device, and then the network device determines the frequency hopping pattern adopted by the terminal during frequency hopping transmission based on the at least one alternative frequency hopping pattern and indicates it to the terminal, wherein the frequency hopping pattern determined by the network device may be any one of the at least one alternative frequency hopping pattern supported by the terminal, or may not be an alternative frequency hopping pattern supported by the terminal.

[0387] Step 2706: The terminal frequency-hops and reflects the electromagnetic waves received by the terminal on at least one first transmission frequency based on the frequency-hopping pattern to transmit information in a frequency-hopping manner.

[0388] Optionally, the method of sending information by frequency hopping by the terminal on at least one first transmitting frequency to reflect the electromagnetic waves received by the terminal may include: assuming that the information that the terminal needs to send is information #1, and the information #1 contains N bits, the terminal can frequency hop and reflect the electromagnetic waves on at least one first transmitting frequency, and the information carried by the electromagnetic waves reflected on each first transmitting frequency is N bits of the information #1. Alternatively, optionally, the N bits of the information #1 can be divided into F sub-bits in sequence, where F is a positive integer and F is less than or equal to the number of first transmitting frequencies. Afterwards, the terminal can send each sub-bit of the information #1 by frequency hopping on different first transmitting frequencies through backscattering. For example, assuming that two first transmitting frequencies are determined, namely the first transmitting frequency #1 and the first transmitting frequency #2, where the time domain resources corresponding to the first transmitting frequency #1 and the first transmitting frequency #2 are different, the information #1 can be divided into two sub-bits, such as the first N / 2 bits of the information #1 can be divided into sub-bit #1, and the last N / 2 bits of the information #1 can be divided into sub-bit #2, and electromagnetic waves can be reflected on the first transmitting frequency #1 and the first transmitting frequency #2, respectively, so that the information carried by the electromagnetic wave reflected on the first transmitting frequency is: sub-bit #1, and the information carried by the electromagnetic wave reflected on the first transmitting frequency is: sub-bit #2.

[0389] The following is an example of the embodiment of FIG2G :

[0390] Assume that the first indication reported by the terminal to the network device is used to indicate that at least one offset value supported by the terminal is: delta1 ,f delta2 , and the second indication reported by the terminal to the network device is used to indicate that the terminal supports frequency hopping to send information on different transmission frequencies. And, assuming that the receiving frequency used by the terminal to receive electromagnetic waves is fc, then based on the offset value f delta1 ,f delta2 Two first transmission frequencies can be determined, and the two first transmission frequencies are: fc+f delta1 ,fc+f delta2 At this time, the first communication mode indicated by the first information sent by the network device to the terminal may include: the sending frequency used by the terminal for backscatter communication is: fc+f delta1 ,fc+f delta2 The terminal performs backscatter communication in the form of frequency hopping to send information at different transmission frequencies. The terminal can delta1 ,fc+f delta2 The up-frequency hopping is performed for backscattering to send information by frequency hopping.

[0391] In the above embodiment, a method is provided for a terminal to perform frequency-hopping backscatter transmission on at least one transmission frequency, so that the terminal can perform frequency-hopping backscatter transmission on at least one transmission frequency. Frequency-hopping backscatter transmission on at least one transmission frequency means that the same information can be frequency-hopped and backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times through frequency hopping. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing long-distance backscattering, thereby guaranteeing communication quality.

[0392] The communication method according to the embodiments of the present disclosure may include at least one of steps 2701 to 2706. For example, step 2701 may be implemented as an independent embodiment, step 2702 may be implemented as an independent embodiment, step 2703 may be implemented as an independent embodiment, and step 2701+S2702 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0393] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0394] FIG2H is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2H , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0395] Step 2801: The terminal reports a first indication and / or a second indication, where the first indication is used to indicate at least one offset value supported by the terminal, and the second indication is used to indicate that the terminal supports frequency hopping to send information on different transmission frequencies.

[0396] Step 2802: The network device determines a first indication and / or a second indication, where the first indication is used to indicate at least one offset value supported by the terminal, and the second indication is used to indicate that the terminal supports frequency hopping to send information on different transmission frequencies.

[0397] Step 2803: The network device sends first information, where the first information is used to indicate a first communication mode. The first communication mode includes: a transmission mode adopted by the terminal when performing backscatter communication: frequency hopping transmission of information on different transmission frequencies.

[0398] Step 2804: The terminal determines at least one transmission frequency supported by the terminal for frequency hopping transmission based on at least one offset value supported by the terminal.

[0399] Step 2805: The terminal determines the frequency hopping pattern.

[0400] Step 2806: The terminal frequency-hops on at least one transmission frequency that supports frequency-hopping transmission based on the frequency-hopping pattern to reflect the electromagnetic waves received by the terminal and transmit information by frequency-hopping.

[0401] For further detailed description of steps 2801 - 2806 , please refer to the above embodiment.

[0402] The following is an example of the embodiment of FIG2H:

[0403] Assume that the first indication reported by the terminal to the network device is used to indicate that at least one offset value supported by the terminal is: delta1 ,f delta2 , and the second indication reported by the terminal to the network device is used to indicate that the terminal supports frequency hopping to send information on different transmission frequencies. And, assuming that the receiving frequency used by the terminal to receive electromagnetic waves is fc, then based on the offset value f delta1 ,f delta2 Two first transmission frequencies can be determined, and the two first transmission frequencies are: fc+f delta1 ,fc+f delta2 At this time, the first communication mode indicated by the first information sent by the network device to the terminal may include: the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information at different sending frequencies, then the terminal can delta1 ,fc+f delta2 The up-frequency hopping is performed for backscattering to send information by frequency hopping.

[0404] In the above embodiment, a method is provided for a terminal to perform frequency-hopping backscatter transmission on at least one transmission frequency, so that the terminal can perform frequency-hopping backscatter transmission on at least one transmission frequency. Frequency-hopping backscatter transmission on at least one transmission frequency means that the same information can be frequency-hopped and backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times through frequency hopping. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing long-distance backscattering, thereby guaranteeing communication quality.

[0405] The communication method involved in the embodiments of the present disclosure may include at least one of steps 2801 to 2806. For example, step 2801 may be implemented as an independent embodiment, step 2802 may be implemented as an independent embodiment, step 2803 may be implemented as an independent embodiment, and step 2801+S2802 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0406] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0407] FIG2I is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2I , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0408] Step 2901: The terminal reports a first indication and / or a second indication, where the first indication is used to indicate that the terminal supports at least one transmission frequency for frequency hopping transmission, and the second indication is used to indicate that the terminal supports frequency hopping transmission of information on different transmission frequencies.

[0409] Step 2902: The network device determines a first indication and / or a second indication, where the first indication is used to indicate that the terminal supports at least one transmission frequency for frequency hopping transmission, and the second indication is used to indicate that the terminal supports frequency hopping transmission of information on different transmission frequencies.

[0410] Step 2903: The network device sends first information, which is used to indicate a first communication mode. The first communication mode includes: the sending frequency used by the terminal when performing backscatter communication is: at least one sending frequency that supports frequency hopping transmission; the sending form used by the terminal when performing backscatter communication is: frequency hopping to send information on different sending frequencies.

[0411] Step 2904: The terminal determines a frequency hopping pattern.

[0412] Step 2905: The terminal frequency-hops on at least one transmission frequency that supports frequency-hopping transmission based on the frequency-hopping pattern to reflect the electromagnetic waves received by the terminal and transmit information by frequency-hopping.

[0413] For other detailed descriptions of steps 2901 - 2905 , please refer to the above embodiments.

[0414] The following is an example of the embodiment of FIG2I:

[0415] Assume that a first indication reported by a terminal to a network device indicates that the terminal supports at least one transmission frequency of frequency hopping transmission: f1, f2, and a second indication reported by the terminal to the network device indicates that the terminal supports frequency hopping information transmission at different transmission frequencies. Furthermore, the first communication mode indicated by the first information sent by the network device to the terminal may include: the transmission frequencies used by the terminal for backscatter communication: f1, f2; and the transmission mode used by the terminal for backscatter communication: frequency hopping information transmission at different transmission frequencies. In this case, the terminal may perform backscattering on f1 and f2 to transmit information by frequency hopping.

[0416] In the above embodiment, a method is provided for a terminal to perform frequency-hopping backscatter transmission on at least one transmission frequency, so that the terminal can perform frequency-hopping backscatter transmission on at least one transmission frequency. Frequency-hopping backscatter transmission on at least one transmission frequency means that the same information can be frequency-hopped and backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times through frequency hopping. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing long-distance backscattering, thereby guaranteeing communication quality.

[0417] The communication method involved in the embodiments of the present disclosure may include at least one of steps 2901 to 2905. For example, step 2901 may be implemented as an independent embodiment, step 2902 may be implemented as an independent embodiment, step 2903 may be implemented as an independent embodiment, and step 2901+S2902 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0418] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0419] FIG2J is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2J , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0420] Step 21001: The terminal reports a first indication and / or a second indication, where the first indication is used to indicate that the terminal supports at least one transmission frequency for frequency hopping transmission, and the second indication is used to indicate that the terminal supports frequency hopping transmission of information on different transmission frequencies.

[0421] Step 21002: The network device determines a first indication and / or a second indication, where the first indication is used to indicate that the terminal supports at least one transmission frequency for frequency hopping transmission, and the second indication is used to indicate that the terminal supports frequency hopping transmission of information on different transmission frequencies.

[0422] Step 21003: The network device sends first information, where the first information is used to indicate a first communication mode. The first communication mode includes: a sending mode adopted by the terminal when performing backscatter communication: frequency hopping to send information at different sending frequencies.

[0423] Step 21004: The terminal determines the frequency hopping pattern.

[0424] Step 21005: The terminal frequency-hops on at least one transmission frequency that supports frequency-hopping transmission based on the frequency-hopping pattern to reflect the electromagnetic waves received by the terminal and transmit information by frequency-hopping.

[0425] For other detailed descriptions of steps 21001-21005, please refer to the above embodiments.

[0426] The following is an example of the embodiment of FIG2J:

[0427] Assume that a first indication reported by a terminal to a network device indicates that the terminal supports at least one transmission frequency of frequency hopping transmission: f1 and f2, and that a second indication reported by the terminal to the network device indicates that the terminal supports frequency hopping information transmission at different transmission frequencies. In this case, the first communication mode indicated by the first information sent by the network device to the terminal may include: the transmission mode adopted by the terminal when performing backscatter communication is frequency hopping information transmission at different transmission frequencies. In this case, the terminal may perform backscattering on f1 and f2 to transmit information by frequency hopping.

[0428] In the above embodiment, a method is provided for a terminal to perform frequency-hopping backscatter transmission on at least one transmission frequency, so that the terminal can perform frequency-hopping backscatter transmission on at least one transmission frequency. Frequency-hopping backscatter transmission on at least one transmission frequency means that the same information can be frequency-hopped and backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times through frequency hopping. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing long-distance backscattering, thereby guaranteeing communication quality.

[0429] The communication method according to the embodiments of the present disclosure may include at least one of steps 3001 to 3005. For example, step 3001 may be implemented as an independent embodiment, step 3002 may be implemented as an independent embodiment, step 3003 may be implemented as an independent embodiment, and step 3001+step 3002 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0430] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0431] FIG2K is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2K , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0432] Step 21101: The terminal reports a first indication and / or a second indication, where the first indication is used to indicate at least one offset value group supported by the terminal, and the second indication is used to indicate that the terminal supports frequency hopping to send information on different transmission frequencies.

[0433] Optionally, the offset value group may include multiple offset values, and the multiple offset values ​​may be used to determine multiple transmission frequencies. For a specific method of determining the transmission frequency based on the offset value, reference may be made to the description of the aforementioned embodiment.

[0434] Optionally, in some embodiments, multiple transmission frequencies determined by multiple offset values ​​in the same offset value group support frequency hopping transmission.

[0435] Step 21102: The network device determines a first indication and / or a second indication, where the first indication is used to indicate at least one offset value group supported by the terminal, and the second indication is used to indicate that the terminal supports frequency hopping to send information on different transmission frequencies.

[0436] For other detailed descriptions of steps 21101-21102, please refer to the above embodiments.

[0437] Step 21103: The network device determines a first offset value group from at least one offset value group supported by the terminal and determines at least one second sending frequency based on the first offset value group.

[0438] Optionally, the first offset value group may be any one of at least one offset value group supported by the terminal.

[0439] For example, it is assumed that the first indication in step 21101 is used to indicate that the terminal supports four offset value groups, and the four offset value groups are: Offset value group #1: (f delta1 ,f delta2 ), offset value group #2: (f delta3 ,f delta4 ), offset value group #3: (f delta1 ,f delta4 ), offset value group #4: (f delta2 ,f delta3 ). The network device can determine the first offset value group from the four offset value groups. For example, the first offset value group can be: offset value group #3: (f delta1 ,f delta4 ).

[0440] Optionally, the second transmission frequency is essentially a transmission frequency supported by the terminal for frequency hopping transmission. The second transmission frequency can be determined based on the offset values ​​in the first offset value group and the receiving frequency used by the terminal when receiving electromagnetic waves. For example, the second transmission frequency can be the sum or difference of the offset values ​​in the first offset value group and the receiving frequency of the terminal. The method for determining the second transmission frequency based on the offset value is the same as the method for determining the first transmission frequency based on the offset value in the aforementioned embodiment and is not further described here.

[0441] For example, assume that the first offset value group is: Offset value group #3: (fdelta1 ,f delta4 ), then two second transmission frequencies can be determined based on the first offset value group, and the two second transmission frequencies can be respectively: delta1 ,fc+f delta4 , where fc is the receiving frequency used by the terminal to receive electromagnetic waves.

[0442] Step 21104: The network device sends first information, which is used to indicate a first communication mode. The first communication mode includes: the sending frequency used by the terminal for backscatter communication is: the second sending frequency; the sending form used by the terminal for backscatter communication is: frequency hopping to send information on different sending frequencies.

[0443] Step 21105: The terminal determines the frequency hopping pattern.

[0444] Step 21106: The terminal frequency-hops on at least one second transmission frequency based on the frequency-hopping pattern to reflect the electromagnetic waves received by the terminal and transmit information by frequency-hopping.

[0445] For detailed description of steps 21104 to 21106, please refer to the above embodiment.

[0446] The following is an example of the embodiment of FIG2K:

[0447] Assume that the first indication reported by the terminal to the network device is used to indicate at least one offset value group supported by the terminal: Offset value group #1: (f delta1 ,f delta2 ), offset value group #2: (f delta3 ,f delta4 ), offset value group #3: (f delta1 ,f delta4 ), offset value group #4: (f delta2 ,f delta3 ), and the second indication reported by the terminal to the network device is used to indicate that the terminal supports frequency hopping to send information on different transmission frequencies. And the first offset value group determined by the network device is: Offset value group #3: (f delta1 ,f delta4 ), then based on offset value group #3: (f delta1 ,f delta4 ) can determine two second transmission frequencies, the two second transmission frequencies are: fc+f delta1 , fc+f delta4 , where fc is the receiving frequency used by the terminal when receiving electromagnetic waves. At this time, if the first communication mode indicated by the network device includes: the sending frequency used by the terminal when performing backscatter communication is: fc+f delta1 , fc+f delta4The terminal performs backscatter communication in the form of frequency hopping to send information at different transmission frequencies. The terminal can delta1 and fc+f delta4 The up-frequency hopping is performed for backscattering to send information by frequency hopping.

[0448] It should be noted that in some embodiments, the first communication mode indicated by the network device in step 21104 may also include: the terminal using a transmission frequency determined by the offset values ​​in the first offset value group when performing backscatter communication; and the terminal using a transmission mode of frequency hopping to transmit information across different transmission frequencies when performing backscatter communication. In this case, the terminal may determine at least one second transmission frequency based on the offset values ​​in the first offset value group, and perform backscattering on the at least one second transmission frequency to transmit information by frequency hopping. In this case, the network device does not need to perform the step of "determining at least one second transmission frequency based on the first offset value group," and instead the terminal performs the step of "determining at least one second transmission frequency based on the first offset value group."

[0449] In the above embodiment, a method is provided for a terminal to perform frequency-hopping backscatter transmission on at least one transmission frequency, so that the terminal can perform frequency-hopping backscatter transmission on at least one transmission frequency. Frequency-hopping backscatter transmission on at least one transmission frequency means that the same information can be frequency-hopped and backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times through frequency hopping. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing long-distance backscattering, thereby guaranteeing communication quality.

[0450] The communication method involved in the embodiments of the present disclosure may include at least one of steps 21101 to 21106. For example, step 21101 may be implemented as an independent embodiment, step 21102 may be implemented as an independent embodiment, step 21103 may be implemented as an independent embodiment, and step 21101+S21102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0451] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0452] FIG2L is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2L , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0453] Step 21201: The terminal reports a first indication and / or a second indication, where the first indication is used to indicate at least one transmission frequency group supported by the terminal, and the second indication is used to indicate that the terminal supports frequency hopping to send information on different transmission frequencies.

[0454] Optionally, the frequency group may include multiple transmission frequencies supported by the terminal for frequency hopping transmission, wherein the relevant introduction to “the transmission frequencies supported by the terminal for frequency hopping transmission” may refer to the description of the aforementioned embodiment.

[0455] Step 21202: The network device determines a first indication and / or a second indication, where the first indication is used to indicate at least one transmission frequency group supported by the terminal, and the second indication is used to indicate that the terminal supports frequency hopping to send information on different transmission frequencies.

[0456] For further detailed description of steps 21201-21202, please refer to the above embodiments.

[0457] Step 21203: The network device determines a first frequency group from at least one transmission frequency group supported by the terminal.

[0458] Optionally, the first frequency group may be any one of at least one transmission frequency group supported by the terminal.

[0459] For example, assuming that the first indication in step 21201 is used to indicate that the terminal supports four frequency groups, the four frequency groups are: frequency group #1: (f1, f2), frequency group #2: (f3, f4), frequency group #3: (f1, f4), and frequency group #4: (f2, f3). The network device can then determine a first frequency group from the four frequency groups. For example, the first frequency group can be: frequency group #1: (f1, f2).

[0460] Step 21204: The network device sends first information, which is used to indicate a first communication mode. The first communication mode includes: the sending frequency used by the terminal when performing backscatter communication is: the sending frequency in the first frequency group; the sending form used by the terminal when performing backscatter communication is: frequency hopping to send information on different sending frequencies.

[0461] Step 21205: The terminal determines the frequency hopping pattern.

[0462] Step 21206: The terminal frequency-hops on the transmission frequency in the first frequency group based on the frequency-hopping pattern to reflect the electromagnetic waves received by the terminal and transmit information in a frequency-hopping manner.

[0463] For detailed description of steps 21204 to 21206, please refer to the above embodiment.

[0464] The following is an example of the embodiment of FIG2L:

[0465] Assume that the first indication reported by the terminal to the network device is used to indicate that the at least one transmission frequency group supported by the terminal is: frequency group #1: (f1, f2), frequency group #2: (f3, f4), frequency group #3: (f1, f4), frequency group #4: (f2, f3), and the second indication reported by the terminal to the network device is used to indicate that the terminal supports frequency hopping to send information on different transmission frequencies. And, the first frequency group determined by the network device is: frequency group #1: (f1, f2). At this time, if the first communication method indicated by the network device includes: the transmission frequency used by the terminal when performing backscatter communication is: the transmission frequency of frequency group #1; the transmission form used by the terminal when performing backscatter communication is: frequency hopping to send information on different transmission frequencies, then the terminal can perform backscattering on f1 and f2 to frequency hop to send information.

[0466] In the above embodiment, a method is provided for a terminal to perform frequency-hopping backscatter transmission on at least one transmission frequency, so that the terminal can perform frequency-hopping backscatter transmission on at least one transmission frequency. Frequency-hopping backscatter transmission on at least one transmission frequency means that the same information can be frequency-hopped and backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times through frequency hopping. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing long-distance backscattering, thereby guaranteeing communication quality.

[0467] The communication method according to the embodiments of the present disclosure may include at least one of steps 21201 to 21205. For example, step 21201 may be implemented as an independent embodiment, step 21202 may be implemented as an independent embodiment, step 21203 may be implemented as an independent embodiment, and step 21201+S21202 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0468] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0469] FIG2M is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2M , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0470] Step 21301. The terminal reports a first indication and / or a second indication, where the first indication is used to indicate that the terminal supports at least one third transmitting frequency for simultaneous transmission and the terminal supports at least one fourth transmitting frequency for frequency hopping transmission, and the second indication is used to indicate that the terminal supports simultaneous information transmission and the terminal supports frequency hopping information transmission.

[0471] Optionally, in some embodiments, the manner in which the first indication is used to indicate the at least one third transmission frequency may include at least one of the following:

[0472] The first type: the first indication directly indicates the at least one third transmitting frequency;

[0473] The second type: the first indication may indicate the offset value corresponding to the third transmitting frequency, and the offset value may be the offset between the third transmitting frequency and the receiving frequency used when the terminal receives electromagnetic waves. For example, the offset value may be the difference between the third transmitting frequency and the receiving frequency used when the terminal receives electromagnetic waves, or the offset value may be the difference between the receiving frequency used when the terminal receives electromagnetic waves and the third transmitting frequency.

[0474] The third type: the first indication may indicate multiple offset value groups, where each offset value group includes multiple offset values, and the offset values ​​in the same offset value group may be used to determine multiple third transmission frequencies supported by the terminal for simultaneous transmission;

[0475] Fourth type: the first indication may indicate multiple frequency groups, wherein each frequency group includes multiple third transmission frequencies supported by the terminal for simultaneous transmission.

[0476] Optionally, in some embodiments, the manner in which the first indication is used to indicate the at least one fourth transmitting frequency may include at least one of the following:

[0477] The first type: the first indication directly indicates the at least one fourth transmitting frequency;

[0478] The second type: the first indication may indicate the offset value corresponding to the fourth transmitting frequency, and the offset value may be the offset between the fourth transmitting frequency and the receiving frequency used when the terminal receives electromagnetic waves. For example, the offset value may be the difference between the fourth transmitting frequency and the receiving frequency used when the terminal receives electromagnetic waves, or the offset value may be the difference between the receiving frequency used when the terminal receives electromagnetic waves and the fourth transmitting frequency.

[0479] The third type: the first indication may indicate multiple offset value groups, where each offset value group includes multiple offset values, and the offset values ​​in the same offset value group may be used to determine multiple fourth transmission frequencies supported by the terminal for simultaneous transmission;

[0480] Fourth type: the first indication may indicate multiple frequency groups, wherein each frequency group includes multiple fourth transmission frequencies supported by the terminal for simultaneous transmission.

[0481] Step 21302: The network device determines a first indication and / or a second indication, wherein the first indication is used to indicate that the terminal supports at least one third transmitting frequency for simultaneous transmission and the terminal supports at least one fourth transmitting frequency for frequency hopping transmission, and the second indication is used to indicate that the terminal supports simultaneous transmission of information and the terminal supports frequency hopping transmission of information.

[0482] Step 21303: The network device sends first information, which is used to indicate a first communication mode. The first communication mode includes: the sending frequency used by the terminal for backscatter communication is: the third sending frequency; the sending form used by the terminal for backscatter communication is: sending information simultaneously on different sending frequencies.

[0483] Optionally, in some embodiments, when the first instruction in steps 21301 and 21302 directly indicates the third transmission frequency, the network device may directly instruct the terminal to simultaneously transmit information on at least one third transmission frequency.

[0484] Optionally, in other embodiments, when the first indication in the above steps 21301 and 21302 indicates the offset value corresponding to the third transmitting frequency, the network device can first determine the corresponding third transmitting frequency based on the offset value indicated by the first indication, and then instruct the terminal to send information simultaneously on at least one third transmitting frequency.

[0485] Optionally, in some further embodiments, when the first indication in the above steps 21301 and 21302 indicates an offset value group, the network device can first determine the first offset value group from the offset value group indicated by the first indication, and determine the corresponding third sending frequency based on the offset value in the first offset value group, and then instruct the terminal to send information simultaneously on at least one third sending frequency.

[0486] Optionally, in some further embodiments, when the first indication in the above steps 21301 and 21302 indicates a frequency group, the network device may first determine the first frequency group from the frequency group indicated by the first indication, and determine the transmitting frequency in the first frequency group as the third transmitting frequency, and then instruct the terminal to send information simultaneously on at least one third transmitting frequency.

[0487] Optionally, in some embodiments, when determining the aforementioned "transmission frequency used by the terminal for backscatter communication," the network device may select from at least one transmission frequency supported by the terminal. Optionally, the "transmission frequency used by the terminal for backscatter communication" indicated by the network device may be part or all of the at least one transmission frequency supported by the terminal (e.g., at least one third transmission frequency and at least one fourth transmission frequency). Furthermore, when determining the aforementioned "transmission form used by the terminal for backscatter communication," the network device may select from at least one transmission form supported by the terminal. Optionally, the "transmission form used by the terminal for backscatter communication" indicated by the network device may be any one of the at least one transmission form supported by the terminal.

[0488] Optionally, the "transmitting frequency used by the terminal when performing backscatter communication" and the "transmitting form used by the terminal when performing backscatter communication" indicated by the network device should correspond to each other. For example, when the transmitting frequency used by the terminal indicated by the network device when performing backscatter communication is: a transmitting frequency that supports frequency hopping transmission (such as the fourth transmitting frequency), the transmitting form used by the terminal indicated by the network device when performing backscatter communication should be: frequency hopping transmission; when the transmitting frequency used by the terminal indicated by the network device when performing backscatter communication is: a transmitting frequency that supports simultaneous transmission (such as the third transmitting frequency), the transmitting form used by the terminal indicated by the network device when performing backscatter communication should be: simultaneous transmission.

[0489] Step 21304: The terminal simultaneously reflects the electromagnetic waves received by the terminal on at least one third transmission frequency to simultaneously send information.

[0490] For a detailed description of steps 21301-21304, please refer to the above embodiment.

[0491] In the above embodiment, a method is provided for a terminal to perform simultaneous backscatter transmission on at least one transmission frequency, so that the terminal can perform simultaneous backscatter transmission on at least one transmission frequency. Simultaneous backscatter transmission on at least one transmission frequency means that the same information is simultaneously backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times simultaneously. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing backscattering over long distances, thereby guaranteeing communication quality.

[0492] The communication method involved in the embodiments of the present disclosure may include at least one of steps 21301 to 21304. For example, step 21301 may be implemented as an independent embodiment, step 21302 may be implemented as an independent embodiment, step 21303 may be implemented as an independent embodiment, and step 21301+S21302 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0493] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0494] FIG2N is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2N , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0495] Step 21401. The terminal reports a first indication and / or a second indication, where the first indication is used to indicate that the terminal supports at least one third transmitting frequency for simultaneous transmission and the terminal supports at least one fourth transmitting frequency for frequency hopping transmission, and the second indication is used to indicate that the terminal supports simultaneous information transmission and the terminal supports frequency hopping information transmission.

[0496] Step 21402: The network device determines a first indication and / or a second indication, wherein the first indication is used to indicate that the terminal supports at least one third transmitting frequency for simultaneous transmission and the terminal supports at least one fourth transmitting frequency for frequency hopping transmission, and the second indication is used to indicate that the terminal supports simultaneous information transmission and the terminal supports frequency hopping information transmission.

[0497] Step 21403: The network device sends first information, where the first information is used to indicate a first communication mode. The first communication mode includes: a sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously at different sending frequencies.

[0498] Step 21404: The terminal simultaneously reflects the electromagnetic waves received by the terminal on at least one third transmission frequency to simultaneously send information.

[0499] For a detailed introduction to steps 21401 to 21404, please refer to the above embodiment.

[0500] In the above embodiment, a method is provided for a terminal to perform simultaneous backscatter transmission on at least one transmission frequency, so that the terminal can perform simultaneous backscatter transmission on at least one transmission frequency. Simultaneous backscatter transmission on at least one transmission frequency means that the same information is simultaneously backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times simultaneously. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing backscattering over long distances, thereby guaranteeing communication quality.

[0501] The communication method involved in the embodiments of the present disclosure may include at least one of steps 21401 to 21404. For example, step 21401 may be implemented as an independent embodiment, step 21402 may be implemented as an independent embodiment, step 21403 may be implemented as an independent embodiment, and step 21401+S21402 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0502] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0503] FIG2O is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2O , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0504] Step 21501. The terminal reports a first indication and / or a second indication, wherein the first indication is used to indicate that the terminal supports at least one third transmitting frequency for simultaneous transmission and the terminal supports at least one fourth transmitting frequency for frequency hopping transmission, and the second indication is used to indicate that the terminal supports simultaneous transmission of information and the terminal supports frequency hopping transmission of information.

[0505] Step 21502: The network device determines a first indication and / or a second indication, wherein the first indication is used to indicate that the terminal supports at least one third transmitting frequency for simultaneous transmission and the terminal supports at least one fourth transmitting frequency for frequency hopping transmission, and the second indication is used to indicate that the terminal supports simultaneous information transmission and the terminal supports frequency hopping information transmission.

[0506] For a detailed introduction to steps 21501 to 21502, please refer to the above embodiment.

[0507] Step 21503: The network device sends first information, where the first information is used to indicate a first communication mode. The first communication mode includes: a sending frequency used by the terminal for backscatter communication is: a fourth sending frequency; and a sending form used by the terminal for backscatter communication is: frequency hopping to send information on different sending frequencies.

[0508] Optionally, in some embodiments, when the first instruction in steps 21501 and 21502 directly indicates the fourth transmission frequency, the network device may directly instruct the terminal to frequency hop and transmit information on at least one fourth transmission frequency.

[0509] Optionally, in other embodiments, when the first indication in the above steps 21501 and 21502 indicates the offset value corresponding to the fourth transmitting frequency, the network device can first determine the corresponding fourth transmitting frequency based on the offset value indicated by the first indication, and then instruct the terminal to frequency hop and send information on at least one fourth transmitting frequency.

[0510] Optionally, in some further embodiments, when the first indication in the above steps 21501 and 21502 indicates an offset value group, the network device can first determine the first offset value group from the offset value group indicated by the first indication, and determine the corresponding fourth sending frequency based on the offset value in the first offset value group, and then instruct the terminal to send information by frequency hopping on at least one fourth sending frequency.

[0511] Optionally, in some further embodiments, when the first indication in the above steps 21501 and 21502 indicates a frequency group, the network device may first determine the first frequency group from the frequency group indicated by the first indication, and determine the transmitting frequency in the first frequency group as the fourth transmitting frequency, and then instruct the terminal to send information by frequency hopping on at least one fourth transmitting frequency.

[0512] Step 21504: The terminal determines the frequency hopping pattern.

[0513] Step 21505: The terminal frequency-hops on at least one fourth transmission frequency based on the frequency-hopping pattern to reflect the electromagnetic waves received by the terminal and transmit information by frequency-hopping.

[0514] For a detailed introduction to steps 21501 to 21505, please refer to the above embodiment.

[0515] In the above embodiment, a method is provided for a terminal to perform frequency-hopping backscatter transmission on at least one transmission frequency, so that the terminal can perform frequency-hopping backscatter transmission on at least one transmission frequency. Frequency-hopping backscatter transmission on at least one transmission frequency means that the same information can be frequency-hopped and backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times through frequency hopping. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing long-distance backscattering, thereby guaranteeing communication quality.

[0516] The communication method according to the embodiments of the present disclosure may include at least one of steps 21501 to 21505. For example, step 21501 may be implemented as an independent embodiment, step 21502 may be implemented as an independent embodiment, step 21503 may be implemented as an independent embodiment, and step 21501+step 21502 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0517] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0518] FIG2P is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2P , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, the method comprising:

[0519] Step 21601. The terminal reports a first indication and / or a second indication, where the first indication is used to indicate that the terminal supports at least one third transmitting frequency for simultaneous transmission and the terminal supports at least one fourth transmitting frequency for frequency hopping transmission, and the second indication is used to indicate that the terminal supports simultaneous transmission of information and the terminal supports frequency hopping transmission of information.

[0520] Step 21602: The network device determines a first indication and / or a second indication, wherein the first indication is used to indicate that the terminal supports at least one third transmitting frequency for simultaneous transmission and the terminal supports at least one fourth transmitting frequency for frequency hopping transmission, and the second indication is used to indicate that the terminal supports simultaneous transmission of information and the terminal supports frequency hopping transmission of information.

[0521] Step 21603: The network device sends first information, where the first information is used to indicate a first communication mode. The first communication mode includes: a sending mode adopted by the terminal when performing backscatter communication is: frequency hopping to send information on different sending frequencies.

[0522] Step 21604: The terminal determines the frequency hopping pattern.

[0523] Step 21605: The terminal frequency-hops on at least one fourth transmission frequency based on the frequency-hopping pattern to reflect the electromagnetic waves received by the terminal and transmit information by frequency-hopping.

[0524] For a detailed introduction to steps 21601 to 21605, please refer to the above embodiment.

[0525] In the above embodiment, a method is provided for a terminal to perform frequency-hopping backscatter transmission on at least one transmission frequency, so that the terminal can perform frequency-hopping backscatter transmission on at least one transmission frequency. Frequency-hopping backscatter transmission on at least one transmission frequency means that the same information can be frequency-hopped and backscattered on multiple transmission frequencies. In other words, the same information can be transmitted multiple times through frequency hopping. This improves the reliability and performance of backscatter communication, ensuring communication accuracy and reliability even when performing long-distance backscattering, thereby guaranteeing communication quality.

[0526] The communication method according to the embodiments of the present disclosure may include at least one of steps 21601 to 21605. For example, step 21601 may be implemented as an independent embodiment, step 21602 may be implemented as an independent embodiment, step 21603 may be implemented as an independent embodiment, and step 21601+S21602 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0527] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0528] Figure 3 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 3, the embodiment of the present disclosure relates to a communication method for a terminal, the method comprising:

[0529] Step 3101: Receive first information sent by a network device.

[0530] Optionally, the first information is used to indicate a first communication mode, where the first communication mode is a communication mode adopted by the terminal during backscatter communication; the first communication mode includes: a transmission frequency adopted by the terminal during backscatter communication, and / or a transmission form adopted by the terminal during backscatter communication; the first communication mode is determined by the network device based on at least one transmission frequency supported by the terminal and / or at least one transmission form supported by the terminal;

[0531] Optionally, the sending form may include, for example, at least one of the following:

[0532] The same uplink transmission can be performed on multiple transmission frequencies;

[0533] The same uplink transmission can be carried out simultaneously on multiple transmission frequencies;

[0534] The same uplink transmission can be performed by frequency hopping on multiple transmission frequencies.

[0535] Optionally, in some embodiments, when the terminal supports the transmission form of: supporting the same uplink transmission on multiple transmission frequencies, the first communication method indicated by the first information sent by the network device may include: backscatter communication on multiple transmission frequencies.

[0536] Step 3102: Use the first communication mode to perform backscatter communication.

[0537] Optionally, the method further includes:

[0538] Reporting a first indication and / or a second indication to the network device; wherein the first indication is used to indicate at least one sending frequency supported by the terminal, and the second indication is used to indicate a sending form supported by the terminal.

[0539] Optionally, the terminal is used to implement backscatter communication, including:

[0540] The terminal receives electromagnetic waves and sends information by reflecting the electromagnetic waves; wherein, the sending frequency used by the terminal when reflecting the electromagnetic waves is the same as the receiving frequency used by the terminal when receiving the electromagnetic waves, and / or, the sending frequency used by the terminal when reflecting the electromagnetic waves is offset from the receiving frequency used by the terminal when receiving the electromagnetic waves.

[0541] Optionally, the at least one transmitting frequency supported by the terminal includes: at least one offset value supported by the terminal, the offset value being an offset between a transmitting frequency supported by the terminal for simultaneous transmission and a receiving frequency adopted by the terminal when receiving electromagnetic waves;

[0542] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0543] Optionally, the first communication mode includes: a transmitting frequency adopted by the terminal when performing backscatter communication is: a first transmitting frequency; a transmitting mode adopted by the terminal when performing backscatter communication is: simultaneously transmitting information at different transmitting frequencies; wherein the first transmitting frequency is a transmitting frequency supported by the terminal for simultaneous transmission, and the first transmitting frequency is determined based on an offset value supported by the terminal and the receiving frequency;

[0544] The adopting the first communication mode to perform backscatter communication includes:

[0545] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one first transmission frequency to simultaneously transmit information.

[0546] Optionally, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously on different sending frequencies;

[0547] The adopting the first communication mode to perform backscatter communication includes:

[0548] Determining at least one transmission frequency supported by the terminal for simultaneous transmission based on at least one offset value supported by the terminal;

[0549] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one transmission frequency supporting simultaneous transmission to simultaneously transmit information.

[0550] Optionally, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency supported by the terminal for simultaneous transmission;

[0551] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0552] Optionally, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: the at least one sending frequency supporting simultaneous sending; the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously on different sending frequencies;

[0553] The adopting the first communication mode to perform backscatter communication includes:

[0554] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one transmission frequency supporting simultaneous transmission to simultaneously transmit information.

[0555] Optionally, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously on different sending frequencies;

[0556] The adopting the first communication mode to perform backscatter communication includes:

[0557] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one transmission frequency supporting simultaneous transmission to simultaneously transmit information.

[0558] Optionally, the at least one transmission frequency supported by the terminal includes: at least one offset value group supported by the terminal, the offset value group including multiple offset values, and multiple transmission frequencies determined by the multiple offset values ​​in the offset value group supporting simultaneous transmission;

[0559] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0560] Optionally, the first communication mode includes: a transmitting frequency adopted by the terminal when performing backscatter communication is: a second transmitting frequency; a transmitting mode adopted by the terminal when performing backscatter communication is: simultaneously transmitting information at different transmitting frequencies; wherein the second transmitting frequency is a transmitting frequency supported by the terminal for simultaneous transmission, the second transmitting frequency being determined based on an offset value in a first offset value group and a receiving frequency adopted by the terminal when receiving electromagnetic waves, the first offset value group being determined by the network device from at least one offset value group supported by the terminal;

[0561] The adopting the first communication mode to perform backscatter communication includes:

[0562] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one second transmission frequency to simultaneously transmit information.

[0563] Optionally, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency group supported by the terminal, the transmission frequency group including multiple transmission frequencies supported by the terminal for simultaneous transmission;

[0564] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0565] Optionally, the first communication mode includes: a transmission frequency used by the terminal when performing backscatter communication is a transmission frequency in a first frequency group; a transmission mode used by the terminal when performing backscatter communication is: simultaneously transmitting information on different transmission frequencies; wherein the first frequency group is determined by the network device from at least one transmission frequency group supported by the terminal;

[0566] The adopting the first communication mode to perform backscatter communication includes:

[0567] The electromagnetic waves received by the terminals are simultaneously reflected on the transmission frequencies in the first frequency group to simultaneously transmit information.

[0568] Optionally, the at least one transmitting frequency supported by the terminal includes: at least one offset value supported by the terminal, the offset value being an offset between a transmitting frequency supported by the terminal for frequency hopping transmission and a receiving frequency adopted by the terminal when receiving electromagnetic waves;

[0569] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0570] Optionally, the first communication mode includes: a transmitting frequency adopted by the terminal when performing backscatter communication is: a first transmitting frequency; a transmitting mode adopted by the terminal when performing backscatter communication is: transmitting information by frequency hopping at different transmitting frequencies; wherein the first transmitting frequency is the transmitting frequency supporting frequency hopping transmission, and the first transmitting frequency is determined based on an offset value supported by the terminal and a receiving frequency adopted by the terminal when receiving electromagnetic waves;

[0571] The adopting the first communication mode to perform backscatter communication includes:

[0572] The electromagnetic waves received by the terminal are reflected by frequency hopping on at least one first transmission frequency to transmit information by frequency hopping.

[0573] Optionally, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: sending information by frequency hopping on different sending frequencies;

[0574] The adopting the first communication mode to perform backscatter communication includes:

[0575] Determining at least one transmission frequency supported by the terminal for frequency hopping transmission based on at least one offset value supported by the terminal;

[0576] The electromagnetic waves received by the terminal are reflected by frequency hopping on at least one transmission frequency supporting frequency hopping transmission to transmit information by frequency hopping.

[0577] Optionally, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency supported by the terminal for frequency hopping transmission;

[0578] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0579] Optionally, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: the at least one sending frequency supporting frequency hopping transmission; the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information on different sending frequencies;

[0580] The adopting the first communication mode to perform backscatter communication includes:

[0581] The electromagnetic waves received by the terminal are reflected by frequency hopping on at least one transmission frequency supporting frequency hopping transmission to transmit information by frequency hopping.

[0582] Optionally, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: sending information by frequency hopping on different sending frequencies;

[0583] The adopting the first communication mode to perform backscatter communication includes:

[0584] The electromagnetic waves received by the terminal are reflected by frequency hopping on at least one transmission frequency supporting frequency hopping transmission to transmit information by frequency hopping.

[0585] Optionally, the at least one transmission frequency supported by the terminal includes: at least one offset value group supported by the terminal, the offset value group including multiple offset values, and the multiple transmission frequencies determined by the multiple offset values ​​in the offset value group supporting frequency hopping transmission;

[0586] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0587] Optionally, the first communication mode includes: a transmitting frequency adopted by the terminal when performing backscatter communication is: a second transmitting frequency; and a transmitting mode adopted by the terminal when performing backscatter communication is: frequency hopping to transmit information on different transmitting frequencies; wherein the second transmitting frequency is a transmitting frequency supported by the terminal for frequency hopping transmission, and the second transmitting frequency is determined based on an offset value in a first offset value group and a receiving frequency adopted by the terminal when receiving electromagnetic waves, and the first offset value group is determined by the network device from at least one offset value group supported by the terminal;

[0588] The adopting the first communication mode to perform backscatter communication includes:

[0589] The electromagnetic waves received by the terminal are reflected by frequency hopping on at least one second transmission frequency to transmit information by frequency hopping.

[0590] Optionally, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency group supported by the terminal, the transmission frequency group including multiple transmission frequencies supported by the terminal for frequency hopping transmission;

[0591] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0592] Optionally, the first communication mode includes: a transmission frequency adopted by the terminal when performing backscatter communication is: a transmission frequency in a first frequency group; a transmission mode adopted by the terminal when performing backscatter communication is: frequency hopping to transmit information on different transmission frequencies; wherein the first frequency group is determined by the network device from at least one transmission frequency group supported by the terminal;

[0593] The adopting the first communication mode to perform backscatter communication includes:

[0594] The electromagnetic waves received by the terminal are reflected by frequency hopping on the transmission frequencies in the first frequency group to transmit information by frequency hopping.

[0595] Optionally, the at least one transmission frequency supported by the terminal includes: at least one third transmission frequency supported by the terminal for simultaneous transmission and at least one fourth transmission frequency supported by the terminal for frequency hopping transmission;

[0596] The transmission forms supported by the terminal include: the terminal supports simultaneous information transmission, and the terminal supports frequency hopping information transmission.

[0597] Optionally, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: a third sending frequency; the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously at different sending frequencies; or, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously at different sending frequencies.

[0598] Optionally, the adopting the first communication mode to perform backscatter communication includes:

[0599] The electromagnetic waves received by the terminal are simultaneously reflected on the at least one third transmission frequency to simultaneously transmit information.

[0600] Optionally, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: the fourth sending frequency; the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information at different sending frequencies; or, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information at different sending frequencies.

[0601] Optionally, the adopting the first communication mode to perform backscatter communication includes:

[0602] The electromagnetic waves received by the terminal are reflected by frequency hopping on the at least one fourth transmission frequency to transmit information by frequency hopping.

[0603] Optionally, the frequency hopping sending information includes:

[0604] Information is transmitted by frequency hopping based on a frequency hopping pattern.

[0605] Optionally, the method further includes at least one of the following:

[0606] Determining the frequency hopping pattern based on protocol agreement;

[0607] receiving the frequency hopping pattern indicated by the network device;

[0608] Report at least one candidate frequency hopping pattern supported by the terminal to the network device, and receive the frequency hopping pattern indicated by the network device based on the at least one candidate frequency hopping pattern.

[0609] Optionally, the method further includes:

[0610] Determine a receiving frequency used by the terminal when receiving electromagnetic waves.

[0611] For a detailed description of steps 3101 - 3102 , please refer to the above embodiment description.

[0612] The communication method involved in the embodiments of the present disclosure may include at least one of steps 3101 to 3102. For example, step 3101 may be implemented as an independent embodiment, step 3102 may be implemented as an independent embodiment, and step 3101+S3102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0613] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0614] Figure 4 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 4, the embodiment of the present disclosure relates to a communication method for a network device, the method comprising:

[0615] Step 4101: Determine the first indication and / or the second indication.

[0616] Optionally, the first indication is used to indicate at least one transmission frequency supported by the terminal, and the second indication is used to indicate a transmission form supported by the terminal; the terminal is used to implement backscatter communication; the terminal is used to implement backscatter communication;

[0617] Step 4102: Send first information to the terminal.

[0618] Optionally, the first information is used to indicate a first communication mode, which is the communication mode adopted by the terminal for backscatter communication. The first communication mode includes: the sending frequency adopted by the terminal for backscatter communication, and / or the sending form adopted by the terminal for backscatter communication.

[0619] Optionally, determining the first indication and / or the second indication includes at least one of the following:

[0620] receiving the first indication and / or the second indication reported by the terminal;

[0621] The first indication and / or the second indication is determined from a core network based on the terminal identification of the terminal.

[0622] Optionally, the method further includes at least one of the following:

[0623] indicating a frequency hopping pattern to the terminal;

[0624] receiving at least one candidate frequency hopping pattern supported by the terminal and reported by the terminal, and indicating a frequency hopping pattern to the terminal based on the at least one candidate frequency hopping pattern.

[0625] Optionally, the method further includes:

[0626] Determine a receiving frequency used by the terminal when receiving electromagnetic waves.

[0627] Optionally, the terminal is used to implement backscatter communication, including:

[0628] The terminal receives electromagnetic waves and sends information by reflecting the electromagnetic waves; wherein, the sending frequency used by the terminal when reflecting the electromagnetic waves is the same as the receiving frequency used by the terminal when receiving the electromagnetic waves, and / or, the sending frequency used by the terminal when reflecting the electromagnetic waves is offset from the receiving frequency used by the terminal when receiving the electromagnetic waves.

[0629] Optionally, the at least one transmitting frequency supported by the terminal includes: at least one offset value supported by the terminal, the offset value being an offset between a transmitting frequency supported by the terminal for simultaneous transmission and a receiving frequency adopted by the terminal when receiving electromagnetic waves;

[0630] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0631] Optionally, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: a first sending frequency; the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously at different sending frequencies; wherein, the first sending frequency is a sending frequency supported by the terminal for simultaneous sending, and the first sending frequency is determined based on the offset value supported by the terminal and the receiving frequency.

[0632] Optionally, the first communication mode includes: a sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously at different sending frequencies.

[0633] Optionally, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency supported by the terminal for simultaneous transmission;

[0634] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0635] Optionally, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: the at least one sending frequency that supports simultaneous sending; the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously on different sending frequencies.

[0636] Optionally, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: sending information at different sending frequencies simultaneously.

[0637] Optionally, the at least one transmission frequency supported by the terminal includes: at least one offset value group supported by the terminal, the offset value group including multiple offset values, and multiple transmission frequencies determined by the multiple offset values ​​in the offset value group supporting simultaneous transmission;

[0638] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0639] Optionally, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: the second sending frequency; the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously at different sending frequencies; wherein, the second sending frequency is the sending frequency supported by the terminal for simultaneous sending, the second sending frequency is determined based on the offset value in the first offset value group and the receiving frequency adopted by the terminal when receiving electromagnetic waves, and the first offset value group is determined by the network device from at least one offset value group supported by the terminal.

[0640] Optionally, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency group supported by the terminal, the transmission frequency group including multiple transmission frequencies supported by the terminal for simultaneous transmission;

[0641] The transmission forms supported by the terminal include: the terminal supports simultaneous transmission of information at different transmission frequencies.

[0642] Optionally, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: the sending frequency in the first frequency group; the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously at different sending frequencies; wherein, the first frequency group is determined by the network device from at least one sending frequency group supported by the terminal.

[0643] Optionally, the at least one transmitting frequency supported by the terminal includes: at least one offset value supported by the terminal, the offset value being an offset between a transmitting frequency supported by the terminal for frequency hopping transmission and a receiving frequency adopted by the terminal when receiving electromagnetic waves;

[0644] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0645] Optionally, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: a first sending frequency; the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information at different sending frequencies; wherein, the first sending frequency is the sending frequency that supports frequency hopping transmission, and the first sending frequency is determined based on the offset value supported by the terminal and the receiving frequency adopted by the terminal when receiving electromagnetic waves.

[0646] Optionally, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information at different sending frequencies.

[0647] Optionally, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency supported by the terminal for frequency hopping transmission;

[0648] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0649] Optionally, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: at least one sending frequency that supports frequency hopping transmission; the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information on different sending frequencies.

[0650] Optionally, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information at different sending frequencies.

[0651] Optionally, the at least one transmission frequency supported by the terminal includes: at least one offset value group supported by the terminal, the offset value group including multiple offset values, and the multiple transmission frequencies determined by the multiple offset values ​​in the offset value group supporting frequency hopping transmission;

[0652] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0653] Optionally, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: the second sending frequency; the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information on different sending frequencies; wherein, the second sending frequency is the sending frequency supported by the terminal for frequency hopping sending, the second sending frequency is determined based on the offset value in the first offset value group and the receiving frequency adopted by the terminal when receiving electromagnetic waves, and the first offset value group is determined by the network device from at least one offset value group supported by the terminal.

[0654] Optionally, the at least one transmission frequency supported by the terminal includes: at least one transmission frequency group supported by the terminal, the transmission frequency group including multiple transmission frequencies supported by the terminal for frequency hopping transmission;

[0655] The transmission forms supported by the terminal include: the terminal supports frequency hopping transmission of information at different transmission frequencies.

[0656] Optionally, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: the sending frequency in the first frequency group; the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information on different sending frequencies; wherein, the first frequency group is determined by the network device from at least one sending frequency group supported by the terminal.

[0657] Optionally, the at least one transmission frequency supported by the terminal includes: at least one third transmission frequency supported by the terminal for simultaneous transmission and at least one fourth transmission frequency supported by the terminal for frequency hopping transmission;

[0658] The transmission forms supported by the terminal include: the terminal supports simultaneous information transmission, and the terminal supports frequency hopping information transmission.

[0659] Optionally, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: a third sending frequency; the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously at different sending frequencies; or, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: sending information simultaneously at different sending frequencies.

[0660] Optionally, the first communication mode includes: the sending frequency adopted by the terminal when performing backscatter communication is: the fourth sending frequency; the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information at different sending frequencies; or, the first communication mode includes: the sending form adopted by the terminal when performing backscatter communication is: frequency hopping to send information at different sending frequencies.

[0661] For a detailed description of steps 4101-4102, please refer to the above embodiment.

[0662] The communication method involved in the embodiment of the present disclosure may include at least one of steps 4101 to 4102. For example, step 4101 may be implemented as an independent embodiment, and step 4102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0663] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0664] Figure 5 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 5, the embodiment of the present disclosure relates to a communication method for a communication system including a terminal and a network device. The method includes at least one of the following:

[0665] Step 5101: The network device determines a first indication and / or a second indication;

[0666] Step 5102: The network device sends first information to the terminal;

[0667] Step 5103: The terminal receives the first information sent by the network device;

[0668] Step 5104: The terminal performs backscatter communication using the first communication mode.

[0669] Optional implementations of steps 5101 to 5104 can be found in the above embodiments.

[0670] In some embodiments, the above method may include the method described in the above embodiments of the communication system side, terminal side, network device side, etc., which will not be repeated here.

[0671] The communication method involved in the embodiment of the present disclosure may include at least one of steps 5101 to 5104. For example, step 5101 may be implemented as an independent embodiment, and step 5102 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0672] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0673] The following is an exemplary introduction to the above method.

[0674] An optional example:

[0675] For devices using backscattering, while transmitting data, they require a continuous wave (CW) energy source (CW node) to provide the waves for reflection. CW waves typically have a constant amplitude. The frequency of the electromagnetic wave reflected by the device can be exactly the same as the CW frequency, or there can be an offset. The offset depends on the device's hardware characteristics and can be fixed or dynamically adjustable. The CW node can be a separate node or a base station or intermediate node (such as a user equipment terminal) that communicates with the device.

[0676] An optional example:

[0677] In ambient IoT, one possible approach to frequency resource utilization is to divide the available spectrum into multiple subchannels. Each subchannel occupies a fixed bandwidth, and the subchannels are orthogonal in the frequency domain. Devices can be instructed by the network to use one or more of these subchannels for data transmission, or they can select one or more subchannels using an algorithm.

[0678] Devices using backscattering have antennas with a wide operating bandwidth, such as tens of MHz. If a CW node transmits a CW on multiple subchannels, the device will receive the CW on these subchannels and backscatter all of them. This means the device cannot reflect only the CW from a specific subchannel.

[0679] In this sense, which uplink sub-channel a device can use actually depends on the CW frequency and offset capabilities.

[0680] Optionally, if the device supports multiple offsets, the device can send uplink channels at multiple frequency points to enhance uplink reception performance.

[0681] Optional example:

[0682] 1. The device reports to the network whether it supports the capability of sending on multiple frequency points in a single uplink transmission. If the device supports the capability of sending on multiple frequency points in a single uplink transmission, the network equipment can instruct the device to send uplink information on multiple frequency points for backscatter transmission.

[0683] 2. Based on 1, the device further reports whether it supports simultaneous transmission on multiple frequencies in a single uplink transmission (i.e., the information sent on multiple frequencies is repeated and simultaneous). The device can also report information about the multiple frequencies it supports for simultaneous transmission in the same uplink transmission. When scheduling the device, the network node can instruct the device to send uplink information on multiple frequencies simultaneously.

[0684] 3. Based on 1, the device further reports whether it supports frequency hopping across multiple frequencies in a single uplink transmission (i.e., a single uplink transmission hops across different frequencies, but not simultaneously). The device can also report the frequency hopping patterns it supports. When scheduling the device, the network node can instruct it to frequency hop across multiple frequencies to transmit uplink information.

[0685] Example case 1 (simultaneous transmission of multiple frequency points):

[0686] 1. The device reports to the network the frequency offsets it supports (i.e., the offset between the frequency of the signal reflected by the device backscattering and the CW frequency in Background 1 above) as f delta1 ,f delta2 The device reports to the network that it supports uplink transmission on multiple frequency points simultaneously (no need to indicate which frequency points can be sent simultaneously, it is assumed that it can be sent simultaneously on all offsets supported by the device). When the network node schedules the device, it instructs the device to send uplink information on multiple frequency points simultaneously, then the device will send uplink information on fc+f delta1 ,fc+f delta2 Where fc is the frequency of CW.

[0687] 2. The device reports to the network that it supports transmission on frequencies f1 and f2. The device reports to the network that it supports simultaneous uplink transmission on multiple frequencies (without specifying which frequencies can be simultaneously transmitted; it defaults to all frequencies supported by the device). When scheduling the device, the network node instructs the device to send uplink information simultaneously on multiple frequencies. The device will then send uplink transmissions simultaneously on f1 and f2. (This embodiment actually implies that the CW frequency is at a fixed frequency point, because the frequency of the signal reflected by the device can also be fixed at one or more frequencies.)

[0688] 3. The device reports to the network the multiple frequency offsets it supports as f delta1 ,f delta2 ,f delta3 ,f delta4 The device reports to the network that it supports uplink transmission on multiple frequency points at the same time, and reports the combination of multiple frequency points supported. That is, the device can support simultaneous transmission on multiple frequencies included in a frequency point combination. For example, the frequency combination can be (f delta1 ,f delta2 ), (f delta3 ,f delta4 ), (f delta1 ,f delta4 ), (f delta2 ,f delta3 ). When scheduling the device, the network node instructs the device to (f delta1 ,f delta4 ) at the same time, then the device will send information at fc+f delta1 ,fc+f delta4 Where fc is the frequency of CW.

[0689] 4. The device reports to the network the multiple frequencies f1, f2, f3, and f4 it supports. The device reports to the network that it supports simultaneous uplink transmissions on multiple frequencies, and also reports the supported frequency combinations, such as (f1, f2), (f3, f4), (f1, f4), and (f2, f3). When scheduling the device, the network node instructs it to send information simultaneously on (f1, f2). The device then sends uplink transmissions simultaneously on f1 and f2.

[0690] Example case 2 (multi-frequency hopping transmission)

[0691] The frequency hopping pattern sent by the device during frequency hopping can be defined by the protocol, instructed by the network, or instructed by the network after the device reports its supported frequency hopping pattern.

[0692] 5. The device reports to the network the multiple frequency offsets it supports as f delta1 ,f delta2The device reports to the network that it supports frequency hopping on multiple frequency points for uplink transmission (no need to indicate which frequency points can be frequency hopped, and the default is that the device can hop on all offsets supported by the device). When the network node schedules the device, it instructs the device to frequency hop on multiple frequency points to send uplink information. Then the device will delta1 ,fc+f delta2 The uplink transmission is sent by frequency hopping, where fc is the frequency of the CW.

[0693] 6. The device reports to the network that it supports multiple frequencies, f1 and f2. The device reports to the network that it supports frequency hopping on multiple frequencies for uplink transmissions (it does not need to specify which frequencies are supported; it assumes that all frequencies supported by the device are supported). When scheduling the device, the network node instructs it to frequency hop on multiple frequencies for uplink transmission. The device then frequency hops on f1 and f2 for uplink transmissions.

[0694] 7. The device reports to the network the multiple frequency offsets it supports as f delta1 ,f delta2 ,f delta3 ,f delta4 The device reports to the network that it supports frequency hopping for uplink transmission at multiple frequency points, and reports the combination of multiple frequency points supported, for example (f delta1 ,f delta2 ), (f delta3 ,f delta4 ), (f delta1 ,f delta4 ), (f delta2 ,f delta3 ). When scheduling the device, the network node instructs the device to (f delta1 ,f delta4 ) to send information on frequency hopping, then the device will be at fc+f delta1 ,fc+f delta4 The uplink transmission is sent by frequency hopping, where fc is the frequency of the CW.

[0695] 8. The device reports to the network the multiple frequencies f1, f2, f3, and f4 it supports. The device reports to the network that it supports frequency hopping for uplink transmissions across multiple frequencies, and also reports the supported frequency combinations, such as (f1, f2), (f3, f4), (f1, f4), and (f2, f3). When scheduling the device, the network node instructs it to frequency hop on (f1, f2). The device then frequency hops on f1 and f2 for uplink transmissions.

[0696] The frequency f1 and frequency fc+f in the above embodiment are delta1 The same can be equivalently described as frequency domain subchannels. If the device uses double-sideband modulation for the CW frequency domain offset, a frequency domain subchannel can correspond to two frequency points in the frequency domain, which are symmetrical about the CW frequency point.

[0697] A device reports its supported frequency information to the network. This can be done by reporting this information to the core network during network registration. The base station then obtains this information from the core network and indicates the appropriate scheduling method for the device when scheduling it. Alternatively, a device can directly report this information to the base station, which then indicates the appropriate scheduling method for the device.

[0698] Whether a device can support simultaneous transmission on multiple frequencies and frequency hopping depends on the device's software and hardware capabilities. The benefit of simultaneous transmission on multiple frequencies and frequency hopping is that they increase transmission reliability by utilizing frequency diversity.

[0699] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0700] It should be understood that the division of the various units or modules in the above device is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. In addition, the units or modules in the device can be implemented in the form of a processor calling software: For example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0701] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0702] FIG6A is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure. As shown in FIG6A , it includes:

[0703] a transceiver module, configured to receive first information sent by a network device, where the first information is used to indicate a first communication mode, where the first communication mode includes: a transmission frequency used by the terminal when performing backscatter communication, and / or a transmission form used by the terminal when performing backscatter communication, where the first communication mode is determined by the network device based on at least one transmission frequency and / or at least one transmission form supported by the terminal;

[0704] The transceiver module is used to perform backscatter communication using the first communication mode.

[0705] Optionally, the transceiver module is configured to execute the steps related to "transmitting and receiving" executed by the terminal in any of the above methods, and the terminal further includes at least one of the processing modules, which is configured to execute the steps related to "processing" executed by the terminal in any of the above methods. Details will not be repeated here.

[0706] FIG6B is a schematic diagram of the structure of the network device proposed in an embodiment of the present disclosure. As shown in FIG6B , it includes:

[0707] a processing module, configured to determine a first indication and / or a second indication; wherein the first indication is used to indicate at least one transmission frequency supported by the terminal, and the second indication is used to indicate a transmission form supported by the terminal; and the terminal is configured to implement backscatter communication;

[0708] The transceiver module is used to send first information to the terminal, where the first information is used to indicate a first communication mode. The first communication mode includes: a sending frequency used by the terminal for backscatter communication, and / or a sending form used by the terminal for backscatter communication.

[0709] Optionally, the above-mentioned transceiver module is used to execute the steps related to "transmitting and receiving" performed by the network device in any of the above methods, and the above-mentioned processing module is used to execute the steps related to "processing" performed by the network device in any of the above methods.

[0710] Figure 7A is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. Communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0711] As shown in Figure 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The processor 7101 is used to call instructions to enable the communication device 7100 to perform any of the above methods.

[0712] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memories 7102 may be located outside the communication device 7100.

[0713] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the communication steps such as sending and receiving in the above method are performed by the transceiver 7103, and the other steps are performed by the processor 7101.

[0714] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0715] Optionally, the communication device 7100 further includes one or more interface circuits 7104, which are connected to the memory 7102. The interface circuits 7104 may be configured to receive signals from the memory 7102 or other devices, and may be configured to send signals to the memory 7102 or other devices. For example, the interface circuits 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0716] The communication device 7100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0717] 7B is a schematic diagram of the structure of a chip 7200 proposed in an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 7200 shown in FIG7B , but the present disclosure is not limited thereto.

[0718] The chip 7200 includes one or more processors 7201 , and the processor 7201 is used to call instructions so that the chip 7200 executes any of the above methods.

[0719] In some embodiments, chip 7200 further includes one or more interface circuits 7202, which are connected to memory 7203. Interface circuit 7202 can be used to receive signals from memory 7203 or other devices, and can be used to send signals to memory 7203 or other devices. For example, interface circuit 7202 can read instructions stored in memory 7203 and send the instructions to processor 7201. Optionally, the terms interface circuit, interface, transceiver pin, and transceiver are interchangeable.

[0720] In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Alternatively, all or part of the memories 7203 may be located outside the chip 7200.

[0721] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0722] The present disclosure also provides a program product, which, when executed by the communication device 7100, enables the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0723] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0724] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0725] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0726] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0727] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that, executed by a terminal, where the terminal is used to implement backscattering communication, and the method includes: receiving first information sent by a network device, where the first information is used to indicate a first communication mode, and the first communication mode includes: a transmission frequency adopted by the terminal when performing backscattering communication, and / or, a transmission form adopted by the terminal when performing backscattering communication; the first communication mode is determined by the network device based on at least one transmission frequency supported by the terminal and / or at least one transmission form supported by the terminal; performing backscattering communication using the first communication mode.

2. The method according to claim 1, characterized in that, the method further includes: reporting a first indication and / or a second indication to the network device; wherein, the first indication is used to indicate at least one transmission frequency supported by the terminal, and the second indication is used to indicate a transmission form supported by the terminal.

3. The method according to claim 1 or 2, characterized in that, the terminal used to implement backscattering communication includes: the terminal receives electromagnetic waves and sends information by reflecting the electromagnetic waves; wherein, a transmission frequency adopted by the terminal when reflecting electromagnetic waves is the same as a reception frequency adopted by the terminal when receiving electromagnetic waves, or, a transmission frequency adopted by the terminal when reflecting electromagnetic waves has an offset from a reception frequency adopted by the terminal when receiving electromagnetic waves.

4. The method according to any one of claims 1-3, characterized in that, at least one transmission frequency supported by the terminal includes: at least one offset value supported by the terminal, and the offset value is an offset between a transmission frequency that the terminal supports to simultaneously transmit and a reception frequency adopted by the terminal when receiving electromagnetic waves; a transmission form supported by the terminal includes: the terminal supports simultaneously sending information at different transmission frequencies.

5. The method according to claim 4, characterized in that, the first communication mode includes: a transmission frequency adopted by the terminal when performing backscattering communication is: a first transmission frequency; a transmission form adopted by the terminal when performing backscattering communication is: simultaneously sending information at different transmission frequencies; wherein, the first transmission frequency is a transmission frequency that the terminal supports to simultaneously transmit, and the first transmission frequency is determined based on the offset value supported by the terminal and the reception frequency; performing backscattering communication using the first communication mode includes: simultaneously reflecting the electromagnetic waves received by the terminal at the at least one first transmission frequency to simultaneously send information.

6. The method according to claim 4, characterized in that, the first communication mode includes: a transmission form adopted by the terminal when performing backscattering communication is: simultaneously sending information at different transmission frequencies; performing backscattering communication using the first communication mode includes: determining at least one transmission frequency that the terminal supports to simultaneously transmit based on at least one offset value supported by the terminal; simultaneously reflecting the electromagnetic waves received by the terminal at the at least one transmission frequency that the terminal supports to simultaneously transmit to simultaneously send information.

7. The method according to any one of claims 1-6, characterized in that, at least one transmission frequency supported by the terminal includes: at least one transmission frequency supported by the terminal for simultaneous transmission; the transmission form supported by the terminal includes: the terminal supports simultaneous transmission of information at different transmission frequencies.

8. The method according to claim 7, characterized in that, the first communication method includes: the transmission frequency adopted by the terminal during backscatter communication is: at least one transmission frequency supported for simultaneous transmission; the transmission form adopted by the terminal during backscatter communication is: simultaneous transmission of information at different transmission frequencies; performing backscatter communication using the first communication method includes: simultaneously reflecting the electromagnetic waves received by the terminal at at least one transmission frequency supported for simultaneous transmission to simultaneously transmit information.

9. The method according to claim 7, characterized in that, the first communication method includes: the transmission form adopted by the terminal during backscatter communication is: simultaneous transmission of information at different transmission frequencies; performing backscatter communication using the first communication method includes: simultaneously reflecting the electromagnetic waves received by the terminal at at least one transmission frequency supported for simultaneous transmission to simultaneously transmit information.

10. The method according to any one of claims 1-9, characterized in that, at least one transmission frequency supported by the terminal includes: at least one offset value group supported by the terminal, the offset value group includes a plurality of offset values, and the plurality of transmission frequencies determined by the plurality of offset values in the offset value group support simultaneous transmission; the transmission form supported by the terminal includes: the terminal supports simultaneous transmission of information at different transmission frequencies.

11. The method according to claim 10, characterized in that, the first communication method includes: the transmission frequency adopted by the terminal during backscatter communication is: a second transmission frequency; the transmission form adopted by the terminal during backscatter communication is: simultaneous transmission of information at different transmission frequencies; wherein, the second transmission frequency is the transmission frequency supported by the terminal for simultaneous transmission, and the second transmission frequency is determined based on the offset values in the first offset value group and the reception frequency adopted by the terminal when receiving electromagnetic waves, and the first offset value group is determined by the network device from at least one offset value group supported by the terminal; performing backscatter communication using the first communication method includes: simultaneously reflecting the electromagnetic waves received by the terminal at at least one second transmission frequency to simultaneously transmit information.

12. The method according to any one of claims 1-11, characterized in that, at least one transmission frequency supported by the terminal includes: at least one transmission frequency group supported by the terminal, and the transmission frequency group includes a plurality of transmission frequencies supported by the terminal for simultaneous transmission; the transmission form supported by the terminal includes: the terminal supports simultaneous transmission of information at different transmission frequencies.

13. The method according to claim 12, characterized in that, The first communication method includes: when the terminal performs backscatter communication, the transmission frequency used is: the transmission frequency in the first frequency group; the transmission form used by the terminal when performing backscatter communication is: simultaneously transmitting information at different transmission frequencies; wherein, the first frequency group is determined by the network device from at least one transmission frequency group supported by the terminal; Performing backscatter communication using the first communication method includes: Simultaneously reflecting the electromagnetic wave received by the terminal at the transmission frequencies in the first frequency group to simultaneously transmit information.

14. The method according to any one of claims 1-3, characterized in that, At least one transmission frequency supported by the terminal includes: at least one offset value supported by the terminal, where the offset value is the offset between the transmission frequency at which the terminal supports frequency hopping transmission and the reception frequency used by the terminal when receiving the electromagnetic wave; The transmission form supported by the terminal includes: the terminal supports frequency hopping transmission of information at different transmission frequencies.

15. The method according to claim 14, characterized in that, The first communication method includes: when the terminal performs backscatter communication, the transmission frequency used is: the first transmission frequency; the transmission form used by the terminal when performing backscatter communication is: frequency hopping transmission of information at different transmission frequencies; wherein, the first transmission frequency is the transmission frequency supporting frequency hopping transmission, and the first transmission frequency is determined based on the offset value supported by the terminal and the reception frequency used by the terminal when receiving the electromagnetic wave; Performing backscatter communication using the first communication method includes: Frequency hopping and reflecting the electromagnetic wave received by the terminal at at least one first transmission frequency to frequency hop and transmit information.

16. The method according to claim 14, characterized in that, The first communication method includes: the transmission form used by the terminal when performing backscatter communication is: frequency hopping transmission of information at different transmission frequencies; Performing backscatter communication using the first communication method includes: Determining at least one transmission frequency at which the terminal supports frequency hopping transmission based on at least one offset value supported by the terminal; Frequency hopping and reflecting the electromagnetic wave received by the terminal at at least one transmission frequency supporting frequency hopping transmission to frequency hop and transmit information.

17. The method according to any one of claims 1-3, 14-16, characterized in that, At least one transmission frequency supported by the terminal includes: at least one transmission frequency at which the terminal supports frequency hopping transmission; The transmission form supported by the terminal includes: the terminal supports frequency hopping transmission of information at different transmission frequencies.

18. The method according to claim 17, characterized in that, The first communication method includes: when the terminal performs backscatter communication, the transmission frequency used is: at least one transmission frequency at which the terminal supports frequency hopping transmission; the transmission form used by the terminal when performing backscatter communication is: frequency hopping transmission of information at different transmission frequencies; Performing backscatter communication using the first communication method includes: Frequency-hop reflect the electromagnetic wave received by the terminal at at least one transmission frequency that supports frequency-hop transmission to transmit information by frequency-hopping.

19. The method according to claim 17 or 18, wherein, the first communication method includes: the transmission form adopted by the terminal when performing backscatter communication is: transmitting information by frequency-hopping at different transmission frequencies; performing backscatter communication using the first communication method includes: Frequency-hop reflect the electromagnetic wave received by the terminal at at least one transmission frequency that supports frequency-hop transmission to transmit information by frequency-hopping.

20. The method according to any one of claims 1-3, 14-19, wherein, at least one transmission frequency supported by the terminal includes: at least one offset value group supported by the terminal, the offset value group includes a plurality of offset values, and the plurality of transmission frequencies determined by the plurality of offset values in the offset value group support frequency-hop transmission; the transmission form supported by the terminal includes: the terminal supports transmitting information by frequency-hopping at different transmission frequencies.

21. The method according to claim 20, wherein, the first communication method includes: the transmission frequency adopted by the terminal when performing backscatter communication is: a second transmission frequency; the transmission form adopted by the terminal when performing backscatter communication is: transmitting information by frequency-hopping at different transmission frequencies; wherein, the second transmission frequency is a transmission frequency supported by the terminal for frequency-hop transmission, and the second transmission frequency is determined based on the offset value in the first offset value group and the reception frequency adopted by the terminal when receiving the electromagnetic wave, and the first offset value group is determined by the network device from at least one offset value group supported by the terminal; performing backscatter communication using the first communication method includes: Frequency-hop reflect the electromagnetic wave received by the terminal at at least one second transmission frequency to transmit information by frequency-hopping.

22. The method according to any one of claims 1-3, 14-21, wherein, at least one transmission frequency supported by the terminal includes: at least one transmission frequency group supported by the terminal, and the transmission frequency group includes a plurality of transmission frequencies supported by the terminal for frequency-hop transmission; the transmission form supported by the terminal includes: the terminal supports transmitting information by frequency-hopping at different transmission frequencies.

23. The method according to claim 22, wherein, the first communication method includes: the transmission frequency adopted by the terminal when performing backscatter communication is: the transmission frequency in the first frequency group; the transmission form adopted by the terminal when performing backscatter communication is: transmitting information by frequency-hopping at different transmission frequencies; wherein, the first frequency group is determined by the network device from at least one transmission frequency group supported by the terminal; performing backscatter communication using the first communication method includes: Frequency-hop reflect the electromagnetic wave received by the terminal at the transmission frequencies in the first frequency group to transmit information by frequency-hopping.

24. The method according to any one of claims 1-23, wherein, At least one transmission frequency supported by the terminal includes: at least one third transmission frequency supported by the terminal for simultaneous transmission and at least one fourth transmission frequency supported by the terminal for frequency-hopping transmission; The transmission forms supported by the terminal include: the terminal supports simultaneous information transmission, and the terminal supports frequency-hopping information transmission.

25. The method according to claim 24, wherein, The first communication method includes: when the terminal performs backscatter communication, the transmission frequency used is: the third transmission frequency; the transmission form used by the terminal when performing backscatter communication is: simultaneous information transmission at different transmission frequencies; or, the first communication method includes: the transmission form used by the terminal when performing backscatter communication is: simultaneous information transmission at different transmission frequencies.

26. The method according to claim 25, wherein, Performing backscatter communication using the first communication method includes: Simultaneously reflecting the electromagnetic waves received by the terminal at the at least one third transmission frequency to simultaneously transmit information.

27. The method according to claim 24, wherein, The first communication method includes: when the terminal performs backscatter communication, the transmission frequency used is: the fourth transmission frequency; the transmission form used by the terminal when performing backscatter communication is: frequency-hopping information transmission at different transmission frequencies; or, the first communication method includes: the transmission form used by the terminal when performing backscatter communication is: frequency-hopping information transmission at different transmission frequencies.

28. The method according to claim 27, wherein, Performing backscatter communication using the first communication method includes: Frequency-hopping and reflecting the electromagnetic waves received by the terminal at the at least one fourth transmission frequency to frequency-hop and transmit information.

29. The method according to any one of claims 14-28, wherein, The frequency-hopping information transmission includes: Frequency-hopping information transmission based on a frequency-hopping pattern.

30. The method according to claim 29, wherein, The method further includes at least one of the following: Determining the frequency-hopping pattern based on protocol agreement; Receiving the frequency-hopping pattern indicated by the network device; Reporting at least one alternative frequency-hopping pattern supported by the terminal to the network device and receiving the frequency-hopping pattern indicated by the network device based on the at least one alternative frequency-hopping pattern.

31. The method according to any one of claims 1-30, wherein, The method further includes: Determining the reception frequency used by the terminal when receiving electromagnetic waves.

32. A communication method, wherein, Executed by a network device, the method includes at least one of the following: Determining a first indication and / or a second indication; wherein, the first indication is used to indicate at least one transmission frequency supported by the terminal, and the second indication is used to indicate the transmission form supported by the terminal; the terminal is used to implement backscatter communication; Send a first piece of information to the terminal, where the first piece of information is used to indicate a first communication method, and the first communication method includes: the transmission frequency used by the terminal for backscatter communication, and / or, the transmission form used by the terminal for backscatter communication.

33. The method according to claim 32, wherein, the determining the first indication and / or the second indication includes at least one of the following: receiving the first indication and / or the second indication reported by the terminal; determining the first indication and / or the second indication from the core network based on the terminal identifier of the terminal.

34. The method according to claim 32 or 33, wherein, the method further includes at least one of the following: indicating a frequency hopping pattern to the terminal; receiving at least one alternative frequency hopping pattern supported by the terminal reported by the terminal, and indicating a frequency hopping pattern to the terminal based on the at least one alternative frequency hopping pattern.

35. The method according to any one of claims 32-34, wherein, the method further includes: determining the reception frequency used by the terminal to receive electromagnetic waves.

36. A communication method for a communication system, the communication system including a terminal and a network device, the method includes at least one of the following: The network device determines a first indication and / or a second indication; wherein, the first indication is used to indicate at least one transmission frequency supported by the terminal, and the second indication is used to indicate the transmission form supported by the terminal; the terminal is used to implement backscatter communication; The network device sends a first piece of information to the terminal, where the first piece of information is used to indicate a first communication method, and the first communication method includes: the transmission frequency used by the terminal for backscatter communication, and / or, the transmission form used by the terminal for backscatter communication; The terminal receives the first piece of information sent by the network device; The terminal performs backscatter communication using the first communication method.

37. A terminal, wherein, including: a transceiver module, configured to receive a first piece of information sent by a network device, where the first piece of information is used to indicate a first communication method, and the first communication method includes: the transmission frequency used by the terminal for backscatter communication, and / or, the transmission form used by the terminal for backscatter communication, and the first communication method is determined by the network device based on at least one transmission frequency supported by the terminal and / or at least one transmission form supported by the terminal; the transceiver module is configured to perform backscatter communication using the first communication method.

38. A network device, wherein, including: a processing module, configured to determine a first indication and / or a second indication; wherein, the first indication is used to indicate at least one transmission frequency, and the second indication is used to indicate the transmission form supported by the terminal; the terminal is used to implement backscatter communication; a transceiver module, configured to send a first piece of information to the terminal, where the first piece of information is used to indicate a first communication method, and the first communication method includes: the transmission frequency used by the terminal for backscatter communication, and / or, the transmission form used by the terminal for backscatter communication.

39. A communication device, characterized in that, comprising: one or more processors; a memory coupled to the processor, and instructions are stored on the memory, and when the instructions are executed by the processor, the communication device is caused to execute the method according to any one of claims 1 to 31.

40. A communication device, characterized in that, comprising: one or more processors; a memory coupled to the processor, and instructions are stored on the memory, and when the instructions are executed by the processor, the communication device is caused to execute the method according to any one of claims 32 to 35.

41. A communication system, characterized in that, comprising a terminal and a network device, wherein the terminal is configured to implement the method according to any one of claims 1 to 31, and the network device is configured to implement the method according to any one of claims 32 to 35.

42. A storage medium storing instructions, characterized in that, when the instructions are run on a communication device, the communication device is caused to execute the method according to any one of claims 1 to 31.

43. A storage medium storing instructions, characterized in that, when the instructions are run on a communication device, the communication device is caused to execute the method according to any one of claims 32 to 35.

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