Communication method, first device, second device, and storage medium

Abstract

Embodiments of the present invention provide a communication method, a first device, a second device, a communication system, and a storage medium. The method is performed by the first device, and comprises: sending first information to a second device, wherein the first information is at least used for indicating a first capability and / or a second capability of the first device executing backscatter transmission on the basis of a first signal, the first capability is a capability associated with an operating bandwidth of the first device, and the second capability is a capability associated with frequence conversion of the first device. A communication mechanism of the technical solution provided by the embodiments of the present invention can adapt to IoT devices supporting ambient power.

Description

Communication method, first device, second device and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a communication method, a first device, a second device, and a storage medium. Background Art

[0002] In the field of communication technology, an ambient Internet of Things (A-IoT) device is an IoT device powered by energy harvesting. Its main feature is that it has no battery or has limited energy storage capacity (for example, using capacitors) and provides energy by collecting radio waves, light, motion, heat or any other suitable power source.

[0003] Summary of the Invention

[0004] After the introduction of IoT devices that support ambient power, the communication mechanism needs to be adjusted.

[0005] Embodiments of the present disclosure provide a communication method, a first device, a second device, and a storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, where the method is performed by a first device and includes:

[0007] sending the first information to the second device;

[0008] The first information is at least used to indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

[0009] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, where the method is performed by a second device, and the method includes:

[0010] receiving first information sent by a first device;

[0011] The first information is at least used to indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

[0012] According to a third aspect of an embodiment of the present disclosure, a first device is provided, the first device including:

[0013] The transceiver module is configured as follows:

[0014] sending the first information to the second device;

[0015] The first information is at least used to indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

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

[0017] The transceiver module is configured as follows:

[0018] receiving first information sent by a first device;

[0019] The first information is at least used to indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

[0020] According to a fifth aspect of an embodiment of the present disclosure, a first device is provided, the first device including:

[0021] one or more processors;

[0022] The first device is used to execute the communication method described in the first aspect.

[0023] According to a sixth aspect of an embodiment of the present disclosure, a second device is provided, the second device including:

[0024] one or more processors;

[0025] The second device is used to execute the communication method described in the second aspect.

[0026] According to a seventh aspect of an embodiment of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions, and when the instructions are executed on a communication device, the communication device executes the communication method provided by the first aspect, the second aspect or the third aspect.

[0027] The communication mechanism of the technical solution provided by the embodiments of the present disclosure can be adapted to IoT devices that support ambient power.

[0028] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not restrictive of the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the embodiments of the present invention.

[0030] FIG1a is a schematic diagram showing an architecture of a communication system according to an exemplary embodiment;

[0031] FIG1b is a schematic diagram showing a time unit according to an exemplary embodiment;

[0032] FIG1c is a schematic diagram showing a channel scheduling according to an exemplary embodiment;

[0033] FIG2a is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0034] FIG3a is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0035] FIG3 b is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0036] FIG4a is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0037] FIG5a is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0038] FIG6a is a schematic structural diagram of a first device according to an exemplary embodiment;

[0039] FIG6b is a schematic structural diagram of a second device according to an exemplary embodiment;

[0040] FIG7a is a schematic structural diagram of a UE according to an exemplary embodiment;

[0041] Fig. 7b is a schematic structural diagram of a communication device according to an exemplary embodiment. DETAILED DESCRIPTION

[0042] Embodiments of the present disclosure provide a communication method, a first device, a second device, a communication system, and a storage medium.

[0043] In a first aspect, an embodiment of the present disclosure provides a communication method, which is performed by a first device and includes:

[0044] sending the first information to the second device;

[0045] The first information is at least used to indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

[0046] In the above embodiment, since the first device sends first information to the second device to indicate the first capability and / or second capability of the first device to perform backscatter transmission based on the first signal, the second device can perform data scheduling or data transmission based on the first capability and / or the second capability after receiving the first information, making data transmission more reliable.

[0047] In combination with the embodiments of the first aspect, in some embodiments, the first information includes level information; different first capabilities and / or second capabilities are associated with different level information.

[0048] In the above embodiment, different first capabilities and / or second capabilities may be indicated by the level information.

[0049] In conjunction with the embodiments of the first aspect, in some embodiments, sending the first information to the second device includes one of the following:

[0050] During the process of the first device accessing the network, sending the first information to the second device;

[0051] During data interaction after the first device accesses the network, the first information is sent to the second device.

[0052] In the above embodiment, the first information may be sent to the second device during different communication processes. In this way, the timing of sending the first information is more flexible.

[0053] In combination with the embodiments of the first aspect, in some embodiments, the first resource is used to transmit the first signal, and information of the first resource is predefined or determined based on received configuration information.

[0054] In the above embodiment, the information of the first resource for transmitting the first signal may be predefined or determined based on received configuration information.

[0055] In the above embodiment, the method of determining the information of the first resource for performing backscatter transmission is more flexible.

[0056] In combination with the embodiments of the first aspect, in some embodiments, the information of the first resource is statically configured, semi-statically configured, or dynamically configured.

[0057] In the above embodiment, the information of the first resource may be configured in different ways.

[0058] In conjunction with the embodiments of the first aspect, in some embodiments, the first resource includes at least one of the following:

[0059] carrier wave;

[0060] subcarrier;

[0061] Partial bandwidth BWP;

[0062] Resource block RB;

[0063] Resource block group RBG;

[0064] Resource element RE;

[0065] Resource element group REG.

[0066] In conjunction with the embodiments of the first aspect, in some embodiments, the first capability of the first device is limited and does not support the second capability, or the first capability of the first device is limited and supports the second capability, or the first capability of the first device is not limited and supports the second capability, or the first capability of the first device is not limited and does not support the second capability, and the method further includes one of the following:

[0067] determining information of the first resource based on predefined information;

[0068] Receive second information sent by the second device; wherein the second information is used to indicate the first resource.

[0069] In the above embodiment, the information used to determine the first resource can be acquired based on different methods.

[0070] In combination with the embodiments of the first aspect, in some embodiments, the second information includes information on the type of the second device and / or information on the topology type of the second device; there is a mapping relationship between the information on the type of the second device and the first resource; there is a mapping relationship between the information on the topology type of the second device and the first resource.

[0071] In the above embodiment, since there is a mapping relationship between the second information and the first resource, the second information may implicitly indicate the first resource.

[0072] In conjunction with the embodiments of the first aspect, in some embodiments, the information of the first resource includes at least one of the following:

[0073] Frequency information;

[0074] Bandwidth information;

[0075] Resource quantity information included in the first resource.

[0076] In conjunction with the embodiments of the first aspect, in some embodiments, the first capability of the first device is limited and supports the second capability, or the first capability is not limited and supports the second capability, and the method further includes:

[0077] determining whether to perform a first operation based on the backscattered transmission;

[0078] The first operation is an operation that causes a frequency shift.

[0079] In the above-described embodiment, it may be determined whether the first operation of the frequency shift operation in which the frequency is shifted is performed based on backscatter transmission.

[0080] In conjunction with the embodiments of the first aspect, in some embodiments, determining whether to perform the first operation based on the backscattered transmission includes one of the following:

[0081] Determining that the transmission is backscattered transmission, and performing the first operation;

[0082] receiving third information sent by a second device, where the third information is used to indicate whether to perform the first operation; and determining whether to perform the first operation based on the third information;

[0083] Receive second information sent by a second device, where the second information is used to indicate the first resource; and determine whether to perform the first operation based on a resource location of the first resource.

[0084] In the above embodiment, whether to perform the first operation can be flexibly determined in different scenarios, and the implementation method will be more flexible.

[0085] In combination with the embodiments of the first aspect, in some embodiments, the third information includes information about the frequency offset.

[0086] In conjunction with the embodiments of the first aspect, in some embodiments, the first capability of the first device is not restricted and does not support the second capability, and the method further includes one of the following:

[0087] receiving second information sent by a second device, where the second information is used to indicate the first resource; and performing a backscatter operation;

[0088] A first signal is detected within a target frequency range and a backscatter operation is performed.

[0089] In the above embodiments, the backscattering operation may be performed in different ways, and the way of performing the backscattering operation may be more flexible.

[0090] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0091] It is determined that the first capability of the first device does not support backscatter transmission based on the first signal, and the device stops listening for downlink (DL) instructions.

[0092] It is determined that the first capability of the first device supports backscatter transmission based on the first signal, and a listening DL instruction is initiated.

[0093] In the above embodiment, the operation of monitoring DL instructions may be stopped or started in different situations.

[0094] In the above embodiment, in a second aspect, an embodiment of the present disclosure provides a communication method, which is performed by a second device and includes:

[0095] receiving first information sent by a first device;

[0096] The first information is at least used to indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

[0097] In combination with the embodiments of the second aspect, in some embodiments, the first information includes level information; different first capabilities and / or second capabilities are associated with different level information.

[0098] In conjunction with the embodiments of the second aspect, in some embodiments, receiving the first information sent by the first device includes one of the following:

[0099] During the process of the first device accessing the network, receiving first information sent by the first device;

[0100] During a data interaction process after the first device accesses the network, first information sent by the first device is received.

[0101] In combination with the embodiments of the second aspect, in some embodiments, the first resource is used to transmit the first signal, and information of the first resource is predefined or determined based on received configuration information.

[0102] In combination with the embodiments of the second aspect, in some embodiments, the information of the first resource is statically configured, semi-statically configured, or dynamically configured.

[0103] In conjunction with the embodiments of the second aspect, in some embodiments, the first resource includes at least one of the following:

[0104] carrier wave;

[0105] subcarrier;

[0106] Partial bandwidth BWP;

[0107] Resource block RB;

[0108] Resource block group RBG;

[0109] Resource element RE;

[0110] Resource element group REG.

[0111] In conjunction with the embodiments of the second aspect, in some embodiments, the first capability of the first device is limited and does not support the second capability, or the first capability of the first device is limited and supports the second capability, or the first capability of the first device is not limited and supports the second capability, or the first capability of the first device is not limited and does not support the second capability, and the method further includes:

[0112] sending second information to the first device;

[0113] The second information is used to indicate the first resource.

[0114] In combination with the embodiments of the second aspect, in some embodiments, the second information includes information on the type of the second device and / or information on the topology type of the second device; there is a mapping relationship between the information on the type of the second device and the first resource; there is a mapping relationship between the information on the topology type of the second device and the first resource.

[0115] In conjunction with the embodiments of the second aspect, in some embodiments, the information of the first resource includes at least one of the following:

[0116] Frequency information;

[0117] Bandwidth information;

[0118] Resource quantity information included in the first resource.

[0119] In conjunction with the embodiments of the second aspect, in some embodiments, the first capability of the first device is limited and supports the second capability, or the first capability is not limited and supports the second capability, and the method further includes:

[0120] Sending third information to the first device, where the third information is used to indicate whether to perform the first operation;

[0121] The first operation is an operation that causes a frequency shift.

[0122] In combination with the embodiments of the second aspect, in some embodiments, the third information includes information about the frequency offset.

[0123] In a third aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

[0124] The first device sends first information to the second device;

[0125] The first information is at least used to indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

[0126] In a fourth aspect, an embodiment of the present disclosure provides a first device, the first device including:

[0127] The transceiver module is configured as follows:

[0128] sending the first information to the second device;

[0129] The first information is at least used to indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

[0130] In a fifth aspect, an embodiment of the present disclosure provides a second device, the second device including:

[0131] The transceiver module is configured as follows:

[0132] receiving first information sent by a first device;

[0133] The first information is at least used to indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

[0134] In the sixth aspect, an embodiment of the present disclosure provides an information indication system, wherein the communication system includes a first device and a second device, the first device is configured to implement the communication method described in the optional implementation manner of the first aspect, and the second device is configured to implement the communication method described in the optional implementation manner of the second aspect.

[0135] In a seventh aspect, an embodiment of the present disclosure provides a first device, the first device including:

[0136] one or more processors;

[0137] The first device is used to execute the communication method provided by the first aspect.

[0138] In an eighth aspect, an embodiment of the present disclosure provides a second device, the second device including:

[0139] one or more processors;

[0140] The second device is used to execute the communication method provided by the second aspect.

[0141] In a ninth aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, which, when executed on a communication device, enable the communication device to execute the communication method described in the optional implementation of the first and second aspects.

[0142] In a tenth 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 method described in the optional implementation of the first and second aspects.

[0143] In an eleventh aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first and second aspects.

[0144] In a twelfth aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.

[0145] It is understandable that the first device, the second device, the communication system, the storage medium, the program product, the computer program, the chip, or the chip system described above are all used to perform the method 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.

[0146] The present disclosure provides a communication method, a first device, a second device, a communication system, and a storage medium. In some embodiments, the terms communication method, information processing method, information transmission method, etc. are interchangeable, and the terms communication system, information processing system, etc. are interchangeable.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0152] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0153] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0154] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0155] 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.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0160] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0161] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0162] In some embodiments, "terminal" or "terminal device" may be referred to as "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.

[0163] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0164] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0165] 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.

[0166] FIG1a is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0167] As shown in FIG. 1 a , a communication system 100 includes a first device 101 and a second device 102 .

[0168] In some embodiments, the first device 101 may be a terminal, for example, an IoT that supports ambient power, or other devices, which are not limited here.

[0169] In some embodiments, the second device 102 may be a terminal, an access network device, or a core network device, but is not limited thereto.

[0170] 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.

[0171] In some embodiments, the access network device may be, 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 Wi-Fi system, but is not limited thereto.

[0172] 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.

[0173] 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.

[0174] In some embodiments, a core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0175] 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 provided by 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 provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0176] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1a, or a portion thereof, but are not limited thereto. The entities shown in FIG1a are illustrative only. The communication system may include all or a portion of the entities shown in FIG1a, or may include other entities other than those shown in FIG1a. 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.

[0177] 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).

[0178] In some embodiments, the passive Internet of Things is a new type of Internet of Things technology. Compared with traditional Internet of Things technology, a significant feature is that the number of ambient power-supporting Internet of Things (A-IoT) terminals (e.g., A-IoT UE, A-IoT device, or A-IoT tag, etc.) in the network is huge, which can inventory and monitor large-scale items. In different application scenarios, A-IoT terminal devices can also be customized according to different needs, so A-IoT technology also has the characteristics of wide application and strong practicality. Compared with narrowband Internet of Things (NB-IoT) terminals, A-IoT terminals have a simpler structure, lower hardware cost and maintenance cost, and the entire device can have a power supply device or not. Ambient IoT devices can use backscatter communications technology, which is one of the key technologies for building a green, energy-saving, low-cost, and flexibly deployable future Internet of Things, and is an important means to achieve "intelligent connection of all things."

[0179] In some embodiments, backscatter communication utilizes the principles of RF signal backscattering to create an extremely low-power modulation and transmission technology. Backscatter communication occurs when a device receives an RF signal, modulates the incoming electromagnetic wave with the information to be transmitted through internal circuitry, such as load impedance modulation, and then transmits the modulated electromagnetic wave carrying the information.

[0180] In some embodiments, an A-IoT device may be a type 1, type 2a, type 2b, or type 2c device. Type 1 and type 2a devices are passive devices, while type 2b is an active device. Type 1 devices (device 1) operate based on backscatter, have the lowest complexity, and consume very little power. Type 2a devices (device 2a) support energy storage and operate based on backscatter. Their complexity and power consumption are higher than those of type 1 devices, and they have a certain signal amplification function, but they still maintain a relatively low level. Type 2b (device 2b) operates based on active transmission. Type 2b devices have the function of amplifying signals and can actively transmit information. In addition, type 2c devices have the ability to actively transmit information and backscatter at the same time. The above-mentioned devices may have the ability to harvest energy, that is, they can draw energy from the environment to supply normal uplink and downlink transmission. The energy in the environment includes both natural energy such as solar energy, wind energy, and nuclear energy, as well as artificial energy such as electromagnetic waves transmitted by artificial devices.

[0181] In some embodiments, a device using backscattering for uplink transmission requires an energy source (CW node) that provides a continuous electromagnetic wave (also known as a carrier wave (CW), or excitation signal) to provide the electromagnetic wave for reflection. CW waves typically have a constant amplitude. The CW node can be a separate node or a base station or intermediate node (such as a UE) communicating with the device.

[0182] In some embodiments, the frequency of the electromagnetic wave reflected by the device can be exactly the same as the CW frequency, or there can be some offset. The offset size is related to the hardware characteristics of the device. The offset may be a fixed value, or if the device hardware supports it, it may support multiple fixed values, or it may be a dynamically adjustable value.

[0183] In some embodiments, for a terminal based on backscatter transmission, the terminal needs to perform backscattering transmission on a corresponding frequency band based on the excitation of a carrier wave.

[0184] In some embodiments, there are two deployment scenarios for passive IoT:

[0185] Topology 1: See Figure 1b. The base station (BS) directly communicates with the A-IoT device through reader-to-device (R2D) or device-to-reader (D2R) communication.

[0186] Topology 2: See Figure 1c. The BS communicates with the intermediate node, and the device communicates with the intermediate node.

[0187] It should be noted that in the two topologies, CW signals may be transmitted on different frequency bands. For terminal types with relatively weak capabilities, such as device type 1, if the terminal needs to perform backscattering transmission on different frequency bands under the coverage of different topologies, transmission failure may occur.

[0188] FIG2a is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2a, the present disclosure embodiment relates to a communication method for a communication system 100, the method comprising:

[0189] Step S2101: The first device sends first information to the second device.

[0190] In some embodiments, the second device receives the first information sent by the first device.

[0191] In some embodiments, the first information is used to at least indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal.

[0192] In some embodiments, the first capability is a capability associated with an operating bandwidth of the first device.

[0193] In some embodiments, the first capability may also be referred to as radio frequency capability.

[0194] In some embodiments, the second capability is a capability associated with frequency conversion of the first device.

[0195] In some embodiments, the second capability may also be referred to as frequency shifting capability.

[0196] In some embodiments, the reflected signal of the first signal is used for the terminal to send data.

[0197] In some embodiments, the reflected signal may be, but is not limited to, a backscattered signal, and may also be a reflected signal of a signal generated by radio waves, light, motion, heat, or any other suitable power source.

[0198] In some embodiments, the first signal is a signal that is sent periodically.

[0199] In some embodiments, the first signal is an excitation signal in backscatter communication.

[0200] In some embodiments, the first information includes level information.

[0201] In some embodiments, different first capabilities and / or second capabilities are associated with different level information.

[0202] Exemplarily, the level information includes a first level and a second level, the first level indicates that the terminal supports a first bandwidth, and the second level indicates that the terminal supports a second bandwidth.

[0203] In some embodiments, during the process of the first device accessing the network, the first device sends the first information to the second device.

[0204] In some embodiments, during a data interaction process after the first device accesses a network, the first device sends the first information to the second device.

[0205] In some embodiments, the first device may be an A-IoT terminal, for example, an A-IoT UE, an A-IoT device, or an A-IoT Tag.

[0206] In some embodiments, the second device may be a device that acts as a Reader.

[0207] Step S2102: The first device determines information about the first resource.

[0208] In some embodiments, the first resource is used to transmit the first signal.

[0209] In some embodiments, the information of the first resource is predefined.

[0210] In some embodiments, the information of the first resource is determined based on received configuration information.

[0211] In some embodiments, the information of the first resource is statically configured.

[0212] In some embodiments, the information of the first resource is semi-statically configured.

[0213] In some embodiments, the information of the first resource is dynamically configured.

[0214] In some embodiments, the first resource includes at least one of the following:

[0215] carrier wave;

[0216] subcarrier;

[0217] Bandwidth Part (BWP);

[0218] Resource Block (RB);

[0219] Resource Block Group (RBG);

[0220] Resource Element (RE);

[0221] Resource Element Group (REG).

[0222] However, the present invention is not limited thereto, and the first resource may also be a frequency domain resource of other granularities.

[0223] In some embodiments, the first resource is a time domain and / or frequency domain resource.

[0224] In some embodiments, the RB may be a physical resource block (PRB) or a PRB bundle.

[0225] In some embodiments, the first resource may be fixed or configurable.

[0226] In some embodiments, the first capability of the first device is limited and does not support the second capability; the first device determines the information of the first resource based on predefined information.

[0227] In some embodiments, the first capability of the first device is limited and does not support the second capability; the first device receives second information sent by the second device; wherein the second information is used to indicate the first resource.

[0228] In some embodiments, the first capability of the first device is limited and supports a second capability; the first device determines the information of the first resource based on predefined information.

[0229] In some embodiments, the first capability of the first device is limited and supports a second capability; the first device receives second information sent by the second device; wherein the second information is used to indicate the first resource.

[0230] In some embodiments, the first capability of the first device is not limited and supports the second capability; the first device determines the information of the first resource based on predefined information.

[0231] In some embodiments, the first capability of the first device is not limited and supports a second capability; the first device receives second information sent by the second device; wherein the second information is used to indicate the first resource.

[0232] In some embodiments, the first capability of the first device is not limited and does not support the second capability; the first device determines the information of the first resource based on predefined information.

[0233] In some embodiments, the first capability of the first device is not restricted and the second capability is not supported; the first device receives second information sent by the second device; wherein the second information is used to indicate the first resource.

[0234] In some embodiments, there is a mapping relationship between the second information and the first resource.

[0235] In some embodiments, the second information is information indicating a type of the second device or information indicating a topology type of the second device.

[0236] In some embodiments, the second information includes information on the type of the second device and / or information on the topology type of the second device; there is a mapping relationship between the information on the type of the second device and the first resource; there is a mapping relationship between the information on the topology type of the second device and the first resource.

[0237] In some embodiments, the information of the first resource includes at least one of the following:

[0238] Frequency information;

[0239] Bandwidth information;

[0240] Resource quantity information included in the first resource.

[0241] In some embodiments, the second information is configuration information.

[0242] In some embodiments, the second information is downlink control information.

[0243] In some embodiments, the second device is a Reader.

[0244] For example, if a terminal receives downlink control information from a reader and determines that the reader is a base station, the terminal can determine that the CW transmission is on the base station's downlink carrier. If a terminal receives downlink control information from a reader and determines that the reader is a terminal, the terminal can determine that the CW transmission is on the terminal's uplink carrier.

[0245] For example, if the terminal receives downlink control information sent by the reader and determines that the topology type is target topology type 1, then the terminal can determine that the CW transmission is on the downlink carrier of the base station. If the terminal receives downlink control information sent by the reader and determines that the topology type is target topology type 2, then the terminal can determine that the CW transmission is on the uplink carrier of the terminal.

[0246] Step S2103: The first device determines whether to perform a first operation.

[0247] In some embodiments, the first capability of the first device is limited and the second capability is supported; the first device determines whether to perform a first operation based on backscatter transmission; wherein the first operation is an operation that causes frequency shift.

[0248] In some embodiments, the first capability is not limited and supports the second capability; the first device determines whether to perform a first operation based on backscatter transmission; wherein the first operation is an operation that causes a frequency shift, and the first operation can also be called a frequency shift operation.

[0249] In some embodiments, the first device determines that the transmission is a backscattered transmission, and the first device performs the first operation.

[0250] In some embodiments, the first device receives third information sent by the second device, where the third information is used to indicate whether to perform the first operation; and the first device determines whether to perform the first operation based on the third information.

[0251] In some embodiments, the third information includes information about a frequency offset.

[0252] In some embodiments, the first device receives second information sent by the second device, where the second information is used to indicate the first resource; and the first device determines whether to perform the first operation based on a resource location of the first resource.

[0253] Step S2104: The first device performs a backscattering operation.

[0254] In some embodiments, second information sent by a second device is received, where the second information is used to indicate the first resource; and a backscatter operation is performed.

[0255] In some embodiments, a first signal is detected within a target frequency range and a backscatter operation is performed.

[0256] In some embodiments, the target frequency range may be part or all of the frequency range corresponding to the first resource, which is not limited here.

[0257] Step S2105: The first device stops monitoring or starts monitoring a downlink (DL) instruction.

[0258] In some embodiments, the first device determines that the first capability of the first device does not support backscatter transmission based on the first signal, and stops listening for downlink (DL) instructions.

[0259] In some embodiments, the first device determines that the first capability of the first device supports backscatter transmission based on the first signal and initiates a Listen DL instruction.

[0260] Exemplarily, it is determined that CW transmission exceeds the radio frequency capability of the terminal, and the terminal stops monitoring DL commands.

[0261] Exemplarily, the terminal monitors the configuration information, determines that the CW transmission is within the terminal carrier range, and starts monitoring the DL command.

[0262] In some embodiments, the backscattering association embodiment is only for illustrative purposes and does not limit the present solution. The term "backscattering" may be replaced by "reflection".

[0263] In some embodiments, the term "information" can be interchangeable with terms such as "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "field", and "data".

[0264] In some embodiments, the term "send" can be interchanged with terms such as "transmit", "report", and "transmit".

[0265] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2105. For example, step S2102 can be implemented as an independent embodiment, step S2104 can be implemented as an independent embodiment, and step S2105 can be implemented as an independent embodiment. For example, step S2101 combined with step S2102 can be implemented as an independent embodiment, step S2101 combined with steps S2102 and step S2103 can be implemented as an independent embodiment, step S2101 combined with steps S2102, step S2103, and step S2104 can be implemented as an independent embodiment, and step S2101 combined with steps S2102, step S2103, step S2104, and step S2105 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0266] Figure 3a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in Figure 3a, the embodiment of the present disclosure relates to a communication method, which is executed by a first device and includes:

[0267] Step S3101: Send first information to the second device.

[0268] In some embodiments, the optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2a and other related parts of the embodiment involved in Figure 2a, which will not be repeated here.

[0269] Step S3102: Determine the information of the first resource.

[0270] In some embodiments, the optional implementation of step S3102 can refer to the optional implementation of step S2102 in Figure 2a and other related parts of the embodiment involved in Figure 2a, which will not be repeated here.

[0271] Step S3103: Determine whether to execute the first operation.

[0272] The optional implementation of step S3103 can refer to the optional implementation of step S2103 in Figure 2a and other related parts in the embodiment involved in Figure 2a, which will not be repeated here.

[0273] Step S3104: Perform backscattering operation.

[0274] In some embodiments, the optional implementation of step S3104 can refer to the optional implementation of step S2104 in Figure 2a and other related parts of the embodiment involved in Figure 2a, which will not be repeated here.

[0275] Step S3105: Stop monitoring or start monitoring DL instructions.

[0276] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3105. For example, step S3102 can be implemented as an independent embodiment, step S3104 can be implemented as an independent embodiment, and step S3105 can be implemented as an independent embodiment. For example, step S3101 combined with step S3102 can be implemented as an independent embodiment, step S3101 combined with steps S3102 and S3103 can be implemented as an independent embodiment, step S3101 combined with steps S3102, S3103, and S3104 can be implemented as an independent embodiment, and step S3101 combined with steps S3102, S3103, S3104, and S3105 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0277] FIG3b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3b, the embodiment of the present disclosure relates to a communication method, which is executed by a first device and includes:

[0278] Step S3201: Send first information to the second device.

[0279] In some embodiments, the first information is used to at least indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

[0280] In some embodiments, the optional implementation of step S3201 can refer to the optional implementation of step S2101 in Figure 2a and other related parts of the embodiment involved in Figure 2a, which will not be repeated here.

[0281] In some embodiments, the first information includes level information; different first capabilities and / or second capabilities are associated with different level information.

[0282] In some embodiments, sending the first information to the second device includes one of the following:

[0283] During the process of the first device accessing the network, sending the first information to the second device;

[0284] During data interaction after the first device accesses the network, the first information is sent to the second device.

[0285] In some embodiments, a first resource is used to transmit the first signal, and information of the first resource is predefined or determined based on received configuration information.

[0286] In some embodiments, the information of the first resource is statically configured, semi-statically configured, or dynamically configured.

[0287] In some embodiments, the first resource includes at least one of the following:

[0288] carrier wave;

[0289] subcarrier;

[0290] Partial bandwidth BWP;

[0291] Resource block RB;

[0292] Resource block group RBG;

[0293] Resource element RE;

[0294] Resource element group REG.

[0295] In some embodiments, the first capability of the first device is limited and does not support the second capability, or the first capability of the first device is limited and supports the second capability, or the first capability of the first device is not limited and supports the second capability, or the first capability of the first device is not limited and does not support the second capability, the method further includes one of the following:

[0296] determining information of the first resource based on predefined information;

[0297] Receive second information sent by the second device; wherein the second information is used to indicate the first resource.

[0298] In some embodiments, the second information includes information on the type of the second device and / or information on the topology type of the second device; there is a mapping relationship between the information on the type of the second device and the first resource; there is a mapping relationship between the information on the topology type of the second device and the first resource.

[0299] In some embodiments, the information of the first resource includes at least one of the following:

[0300] Frequency information;

[0301] Bandwidth information;

[0302] Resource quantity information included in the first resource.

[0303] In some embodiments, the first capability of the first device is limited and supports the second capability, or the first capability is not limited and supports the second capability, the method further includes:

[0304] determining whether to perform a first operation based on the backscattered transmission;

[0305] The first operation is an operation that causes a frequency shift.

[0306] In some embodiments, the determining whether to perform a first operation based on the backscattered transmission comprises one of the following:

[0307] Determining that the transmission is backscattered transmission, and performing the first operation;

[0308] receiving third information sent by a second device, where the third information is used to indicate whether to perform the first operation; and determining whether to perform the first operation based on the third information;

[0309] Receive second information sent by a second device, where the second information is used to indicate the first resource; and determine whether to perform the first operation based on a resource location of the first resource.

[0310] In some embodiments, the third information includes information about a frequency offset.

[0311] In some embodiments, the first capability of the first device is not limited and does not support the second capability, and the method further includes one of the following:

[0312] receiving second information sent by a second device, where the second information is used to indicate the first resource; and performing a backscatter operation;

[0313] A first signal is detected within a target frequency range and a backscatter operation is performed.

[0314] In some embodiments, the method further comprises:

[0315] It is determined that the first capability of the first device does not support backscatter transmission based on the first signal, and the device stops listening for downlink (DL) instructions.

[0316] It is determined that the first capability of the first device supports backscatter transmission based on the first signal, and a listening DL instruction is initiated.

[0317] Figure 4a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in Figure 4a, the embodiment of the present disclosure relates to a communication method, which is executed by a second device, and the method includes:

[0318] Step S4101: Receive first information sent by a first device.

[0319] In some embodiments, the first information is used to at least indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

[0320] In some embodiments, the optional implementation of step S4101 can refer to the optional implementation of step S2101 in Figure 2a and other related parts of the embodiment involved in Figure 2a, which will not be repeated here.

[0321] In some embodiments, the first information includes level information; different first capabilities and / or second capabilities are associated with different level information.

[0322] In some embodiments, the receiving the first information sent by the first device includes one of the following:

[0323] During the process of the first device accessing the network, receiving first information sent by the first device;

[0324] During a data interaction process after the first device accesses the network, first information sent by the first device is received.

[0325] In some embodiments, a first resource is used to transmit the first signal, and information of the first resource is predefined or determined based on received configuration information.

[0326] In some embodiments, the information of the first resource is statically configured, semi-statically configured, or dynamically configured.

[0327] In some embodiments, the first resource includes at least one of the following:

[0328] carrier wave;

[0329] subcarrier;

[0330] Partial bandwidth BWP;

[0331] Resource block RB;

[0332] Resource block group RBG;

[0333] Resource element RE;

[0334] Resource element group REG.

[0335] In some embodiments, the first capability of the first device is limited and does not support the second capability, or the first capability of the first device is limited and supports the second capability, or the first capability of the first device is not limited and supports the second capability, or the first capability of the first device is not limited and does not support the second capability, the method further includes:

[0336] sending second information to the first device;

[0337] The second information is used to indicate the first resource.

[0338] In some embodiments, the second information includes information on the type of the second device and / or information on the topology type of the second device; there is a mapping relationship between the information on the type of the second device and the first resource; there is a mapping relationship between the information on the topology type of the second device and the first resource.

[0339] In some embodiments, the information of the first resource includes at least one of the following:

[0340] Frequency information;

[0341] Bandwidth information;

[0342] Resource quantity information included in the first resource.

[0343] In some embodiments, the first capability of the first device is limited and supports the second capability, or the first capability is not limited and supports the second capability, the method further includes:

[0344] Sending third information to the first device, where the third information is used to indicate whether to perform the first operation;

[0345] The first operation is an operation that causes a frequency shift.

[0346] In some embodiments, the third information includes information about a frequency offset.

[0347] Figure 5a is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 5a, the embodiment of the present disclosure relates to a communication method, which is used in a communication system 100. The method includes one of the following steps:

[0348] Step S5101: The first device sends first information to the second device.

[0349] In some embodiments, the first information is used to at least indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

[0350] The optional implementation of step S5101 can refer to the optional implementation of step S2101 in Figure 2a and other related parts of the embodiment involved in Figure 2a, which will not be repeated here.

[0351] In some embodiments, the above method may include the methods of the above-mentioned communication system side, terminal side, network device side, etc. embodiments, which will not be repeated here.

[0352] In order to better understand the embodiments of the present disclosure, the technical solutions of the present disclosure are further described below through some exemplary embodiments:

[0353] In some embodiments, the terminal (corresponding to the first device) reports indication information (corresponding to the first information) representing the terminal capability.

[0354] In some embodiments, the terminal capabilities include at least the radio frequency capabilities and frequency shifting capabilities of the terminal.

[0355] In some embodiments, radio frequency capability is used to characterize the operating bandwidth capability of a terminal, and may be characterized at different levels.

[0356] In some embodiments, frequency shift capability is used to characterize the shift capability of a terminal in performing backscattering transmission.

[0357] In some embodiments, the terminal may report the capability indication information during the access process, or report the capability indication information during the data interaction process after the access.

[0358] In some embodiments, the transmission carrier (corresponding to the first resource) of the CW for the target AIoT terminal can be fixed or configurable. It should be noted that the carrier refers to a segment of target frequency resources, which can be called a carrier, or a bandwidth portion, or a PRB, or a PRB bundle, or any other arbitrarily defined frequency domain resource unit.

[0359] In some embodiments, in Scheme 1, the transmission carrier of the CW is fixed.

[0360] In some embodiments, in Solution 1, the transmission carrier of the CW cannot be adjusted dynamically or semi-statically, and the CW is fixedly carried on the D2R or R2D transmission carrier.

[0361] In some embodiments, the terminal has limited radio frequency capabilities and does not have the ability to shift frequencies.

[0362] In some embodiments, the terminal obtains the working carrier information of the CW based on a predefined method or by receiving configuration information (corresponding to the second information).

[0363] In some embodiments, the terminal monitors the downlink control information (corresponding to the second information) sent by the reader to determine the working carrier information of the terminal (corresponding to the information of the first resource).

[0364] In some embodiments, the working carrier information may include at least one of the following information:

[0365] Carrier frequency information;

[0366] Carrier bandwidth information;

[0367] The number of target resources included in the carrier.

[0368] In some embodiments, the terminal monitors the configuration information (corresponding to the second information) and determines the working carrier of the CW, which is bound to the type of the reader. The terminal determines the working carrier information of the CW based on the type indication information carried in the configuration information.

[0369] For example, if the terminal receives control information sent by the reader and determines that the reader type is a base station, the terminal can determine that the CW transmission is on the base station's downlink carrier. If the terminal receives control information sent by the reader and determines that the reader type is a terminal, the terminal can determine that the CW transmission is on the terminal's uplink carrier.

[0370] In some embodiments, the terminal monitors the configuration information and determines the working carrier of the CW, where the working carrier of the CW is bound to the topology of the reader. The terminal determines the working carrier information of the CW based on the topology type indication information carried in the configuration information.

[0371] For example, if the terminal receives control information sent by the reader and determines that the topology type is target topology type 1, then the terminal can determine that the CW transmission is on the downlink carrier of the base station. If the terminal receives control information sent by the reader and determines that the topology type is target topology type 2, then the terminal can determine that the CW transmission is on the uplink carrier of the terminal.

[0372] In some embodiments, if it is determined that the CW transmission exceeds the radio frequency capability of the terminal, the terminal stops listening for DL ​​commands.

[0373] In some embodiments, the terminal monitors the configuration information, determines that the CW transmission is within the terminal carrier range, and starts monitoring the DL command.

[0374] In some embodiments, the terminal has limited radio frequency capabilities and has frequency shifting capabilities.

[0375] In some embodiments, the terminal obtains the working carrier information of the CW based on a predefined method or a received configuration method.

[0376] In some embodiments, the terminal monitors downlink control information sent by the reader to determine the working carrier information of the terminal.

[0377] In some embodiments, the working carrier information may include at least one of the following information:

[0378] Carrier frequency information;

[0379] Carrier bandwidth information;

[0380] The number of target resources included in the carrier.

[0381] In some embodiments, the terminal monitors the configuration information and determines the working carrier of the CW, where the working carrier of the CW is bound to the type of the reader. The terminal determines the working carrier information of the CW based on the type indication information carried in the configuration information.

[0382] For example, if the terminal receives control information sent by the reader and determines that the reader type is a base station, the terminal can determine that the CW transmission is on the base station's downlink carrier. If the terminal receives control information sent by the reader and determines that the reader type is a terminal, the terminal can determine that the CW transmission is on the terminal's uplink carrier.

[0383] In some embodiments, the terminal monitors the configuration information and determines the working carrier of the CW, which is bound to the topology of the reader. The terminal determines the working carrier information of the CW based on the topology type indication information carried in the configuration information.

[0384] For example, if the terminal receives control information sent by the reader and determines that the topology type is target topology type 1, then the terminal can determine that the CW transmission is on the downlink carrier of the base station. If the terminal receives control information sent by the reader and determines that the topology type is target topology type 2, then the terminal can determine that the CW transmission is on the uplink carrier of the terminal.

[0385] In some embodiments, the terminal may determine whether backscattering transmission performs frequency shift based on the working carrier of the CW. The method of determining whether backscattering transmission performs frequency shift may include at least one of the following:

[0386] 1. The terminal always performs frequency shifting for backscattering transmission;

[0387] 2. The terminal receives the downlink control information sent by the reader and determines whether to perform frequency shift and further determines the specific frequency shift amount;

[0388] 3. The terminal determines whether to perform frequency shift based on the operating carrier position of the CW.

[0389] In some embodiments, the terminal has unrestricted radio frequency capabilities (relative to FDD DL or UL separation) and does not have frequency shifting capabilities.

[0390] In some embodiments, a CW working carrier is determined based on an indication of the downlink control information, and a corresponding backscattering operation is performed.

[0391] In some embodiments, the terminal detects the position of the CW within the target frequency range and performs corresponding backscattering operations.

[0392] In some embodiments, the terminal's radio frequency capability is not limited (relative to FDD DL or UL separation) and has frequency shifting capability.

[0393] In some embodiments, the CW operating carrier is determined based on an indication of a DL command, and an indication is given to determine whether to perform frequency shifting of uplink transmission. The method of determining whether to perform frequency shifting of backscattering transmission may include at least one of the following:

[0394] 1. The terminal always performs frequency shifting for backscattering transmission;

[0395] 2. The terminal receives the downlink control information sent by the reader, determines whether to perform frequency shift, and further determines the specific frequency offset information.

[0396] 3. The terminal determines whether to perform frequency shift based on the operating carrier position of the CW.

[0397] In some embodiments, in Scheme 2, the transmission carrier of the CW is configurable.

[0398] In some embodiments, in solution 2, the transmission carrier of the CW can be adjusted dynamically or semi-statically, and the CW can be carried on the D2R or R2D transmission carrier based on the configuration of the reader.

[0399] In some embodiments, the terminal has limited radio frequency capabilities and does not have the ability to shift frequencies.

[0400] In some embodiments, the Reader determines the transmission carrier of the CW based on the capability report of the terminal, and notifies the terminal explicitly or implicitly.

[0401] In some embodiments, the terminal monitors the configuration information and determines the working carrier of the CW, which is bound to the type of the reader. The terminal determines the working carrier information of the CW based on the type indication information carried in the configuration information; the type can be a topology type or a reader type.

[0402] For example, if the terminal receives control information sent by the reader and determines that the reader type is a base station, the terminal can determine that the CW transmission is on the base station's downlink carrier. If the terminal receives control information sent by the reader and determines that the reader type is a terminal, the terminal can determine that the CW transmission is on the terminal's uplink carrier.

[0403] For example, if the terminal receives control information sent by the reader and determines that the topology type is target topology type 1, then the terminal can determine that the CW transmission is on the downlink carrier of the base station. If the terminal receives control information sent by the reader and determines that the topology type is target topology type 2, then the terminal can determine that the CW transmission is on the uplink carrier of the terminal.

[0404] In some embodiments, the carrier information (FDD DL or FDD UL) of the CW is directly carried in the configuration information.

[0405] In some embodiments, the terminal does not expect to be configured with a CW carrier configuration outside its operating range.

[0406] In some embodiments, the terminal has limited radio frequency capabilities and has frequency shifting capabilities.

[0407] In some embodiments, the operation of determining the working carrier of the CW is similar to the above operation, except that the terminal can determine whether to perform frequency shifting for backscattering transmission based on the working carrier of the CW.

[0408] In some embodiments, the terminal determines whether to perform frequency shift based on an instruction of a DL command.

[0409] In some embodiments, the terminal always performs frequency shifting of transmissions.

[0410] In the embodiments of the present disclosure, it is possible to effectively solve the problem that a passive IoT terminal supporting backscattering can receive a CW signal in a timely manner, thereby ensuring the effectiveness of data transmission.

[0411] 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.

[0412] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may 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.

[0413] 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.

[0414] Figure 6a is a schematic diagram of the structure of the first device 6100 proposed in an embodiment of the present disclosure. As shown in Figure 6a, the first device 6100 may include: at least one of a transceiver module 6101, a processing module 6102, etc. In some embodiments, the transceiver module is used to send the first information. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the first device 6101 in any of the above methods, which will not be repeated here. Optionally, the processing module is used to perform at least one of the other steps performed by the first device 6101 in any of the above methods, which will not be repeated here.

[0415] Figure 6b is a structural diagram of the second device 6200 proposed in an embodiment of the present disclosure. As shown in Figure 6b, the second device 6200 may include: at least one of a transceiver module 6201, a processing module 6202, etc. In some embodiments, the above-mentioned transceiver module is used to receive the first information. Optionally, the above-mentioned transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the second device 6200 in any of the above methods, which will not be repeated here. In some embodiments, the transceiver module may include a sending module and / or a receiving module, and the sending module and the receiving module may be separate or integrated together. Optionally, the transceiver module may be interchangeable with the transceiver. Optionally, the above-mentioned processing module is used to perform at least one of the other steps performed by the second device 6200 in any of the above methods, which will not be repeated here.

[0416] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0417] Figure 7a is a schematic diagram of the structure of a communication device 8100 proposed in an embodiment of the present disclosure. Communication device 8100 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 8100 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.

[0418] As shown in Figure 7a, the communication device 8100 includes one or more processors 8101. The processor 8101 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, baseband chip, terminal device, terminal device chip, DU or CU, etc.), execute programs, and process program data. The communication device 8100 is used to perform any of the above methods.

[0419] In some embodiments, the communication device 8100 further includes one or more memories 8102 for storing instructions. Optionally, all or part of the memories 8102 may be located outside the communication device 8100.

[0420] In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the transceiver 8103 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 8101 performs at least one of the other steps.

[0421] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter 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.

[0422] In some embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102. The interface circuit 8104 may be configured to receive signals from the memory 8102 or other devices, and may be configured to send signals to the memory 8102 or other devices. For example, the interface circuit 8104 may read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0423] The communication device 8100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 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.

[0424] FIG7 b is a schematic diagram of the structure of the chip 8200 proposed in an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 8200 shown in FIG7 b , but the present disclosure is not limited thereto.

[0425] The chip 8200 includes one or more processors 8201 , and the chip 8200 is configured to execute any of the above methods.

[0426] In some embodiments, the chip 8200 further includes one or more interface circuits 8202. Optionally, the interface circuit 8202 is connected to the memory 8203. The interface circuit 8202 can be used to receive signals from the memory 8203 or other devices, and can be used to send signals to the memory 8203 or other devices. For example, the interface circuit 8202 can read instructions stored in the memory 8203 and send the instructions to the processor 8201.

[0427] In some embodiments, the interface circuit 8202 executes at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, step S3101, but not limited thereto), and the processor 8201 executes at least one of the other steps.

[0428] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0429] In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Alternatively, all or part of the memories 8203 may be outside the chip 8200.

[0430] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 to execute 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.

[0431] The present disclosure also provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0432] 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.

Claims

1. A communication method, characterized in that: The method is performed by a first device, and includes: sending the first information to the second device; The first information is at least used to indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

2. The method according to claim 1, characterized in that The first information includes level information; different first capabilities and / or second capabilities are associated with different level information.

3. The method according to claim 1, characterized in that The sending the first information to the second device includes one of the following: During the process of the first device accessing the network, sending the first information to the second device; During data interaction after the first device accesses the network, the first information is sent to the second device.

4. The method according to claim 1, wherein The resource used to transmit the first signal is a first resource, and information about the first resource is predefined or determined based on received configuration information.

5. The method according to claim 4, characterized in that The information of the first resource is statically configured, semi-statically configured, or dynamically configured.

6. The method according to claim 4, characterized in that The first resource includes at least one of the following: carrier wave; subcarrier; Partial bandwidth BWP; Resource block RB; Resource block group RBG; Resource element RE; Resource element group REG.

7. The method according to claim 4, characterized in that The first capability of the first device is limited and does not support the second capability, or the first capability of the first device is limited and supports the second capability, or the first capability of the first device is not limited and supports the second capability, or the first capability of the first device is not limited and does not support the second capability, and the method further includes one of the following: determining information of the first resource based on predefined information; Receive second information sent by the second device; wherein the second information is used to indicate the first resource.

8. The method according to claim 7, characterized in that The second information includes information about the type of the second device and / or information about the topology type of the second device; there is a mapping relationship between the information about the type of the second device and the first resource; there is a mapping relationship between the information about the topology type of the second device and the first resource.

9. The method according to any one of claims 4 to 8, characterized in that The information of the first resource includes at least one of the following: Frequency information; Bandwidth information; Resource quantity information included in the first resource.

10. The method according to claim 4, characterized in that The first capability of the first device is limited and supports the second capability, or the first capability is not limited and supports the second capability, the method further includes: determining whether to perform a first operation based on the backscattered transmission; The first operation is an operation that causes a frequency shift.

11. The method according to claim 10, characterized in that The determining whether to perform a first operation based on the backscattered transmission includes one of the following: Determining that the transmission is backscattered transmission, and performing the first operation; receiving third information sent by the second device, where the third information is used to indicate whether to perform the first operation; determining whether to perform the first operation based on the third information; receiving second information sent by a second device, where the second information is used to indicate the first resource; Based on the resource location of the first resource, it is determined whether to perform the first operation.

12. The method according to claim 11, characterized in that The third information includes information about the frequency offset.

13. The method according to claim 4, characterized in that The first capability of the first device is not restricted and the second capability is not supported, and the method further includes one of the following: receiving second information sent by a second device, where the second information is used to indicate the first resource; and performing a backscatter operation; A first signal is detected within a target frequency range and a backscatter operation is performed.

14. The method according to claim 1, wherein The method further comprises one of the following: determining that the first capability of the first device does not support backscatter transmission based on the first signal, and stopping listening for downlink (DL) instructions; It is determined that the first capability of the first device supports backscatter transmission based on the first signal, and a listening DL instruction is initiated.

15. A communication method, characterized in that: The method is performed by a second device, and includes: receiving first information sent by a first device; The first information is at least used to indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

16. The method according to claim 15, characterized in that The first information includes level information; different first capabilities and / or second capabilities are associated with different level information.

17. The method according to claim 15, characterized in that The receiving the first information sent by the first device includes one of the following: During the process of the first device accessing the network, receiving first information sent by the first device; During a data interaction process after the first device accesses the network, first information sent by the first device is received.

18. The method according to claim 15, characterized in that The first resource is used to transmit the first signal, and information about the first resource is predefined or determined based on received configuration information.

19. The method according to claim 18, characterized in that The information of the first resource is statically configured, semi-statically configured, or dynamically configured.

20. The method according to claim 18, wherein The first resource includes at least one of the following: carrier wave; subcarrier; Partial bandwidth BWP; Resource block RB; Resource block group RBG; Resource element RE; Resource element group REG.

21. The method according to claim 18, wherein The first capability of the first device is limited and the first device does not support the second capability, or the first capability of the first device is limited and the first device supports the second capability, or the first capability of the first device is not limited and the first device supports the second capability, or the first capability of the first device is not limited and the first device does not support the second capability, the method further includes: sending second information to the first device; The second information is used to indicate the first resource.

22. The method according to claim 21, characterized in that The second information includes information about the type of the second device and / or information about the topology type of the second device; there is a mapping relationship between the information about the type of the second device and the first resource; there is a mapping relationship between the information about the topology type of the second device and the first resource.

23. The method according to any one of claims 18 to 22, characterized in that The information of the first resource includes at least one of the following: Frequency information; Bandwidth information; Resource quantity information included in the first resource.

24. The method according to claim 18, wherein The first capability of the first device is limited and supports the second capability, or the first capability is not limited and supports the second capability, the method further includes: Sending third information to the first device, where the third information is used to indicate whether to perform the first operation; The first operation is an operation that causes a frequency shift.

25. The method according to claim 24, characterized in that The third information includes information about the frequency offset.

26. A first device, characterized in that: The first device includes: The transceiver module is configured as follows: sending the first information to the second device; The first information is at least used to indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

27. A second device, characterized in that: The second device includes: The transceiver module is configured as follows: receiving first information sent by a first device; The first information is at least used to indicate: a first capability and / or a second capability of the first device to perform backscatter transmission based on the first signal, the first capability being a capability associated with the working bandwidth of the first device, and the second capability being a capability associated with the frequency conversion of the first device.

28. A first device, characterized in that: The first device includes: one or more processors; The first device is configured to execute the communication method according to any one of claims 1 to 14.

29. A second device, wherein: The second device includes: one or more processors; The second device is configured to execute the communication method according to any one of claims 15 to 25.

30. A storage medium, wherein: The storage medium stores instructions, and when the instructions are executed on the communication device, the communication device executes the communication method according to any one of claims 1 to 14 and claims 15 to 25.

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