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

Abstract

Provided in the embodiments of the present disclosure are a communication method and apparatus, and a communication device, a communication system and a storage medium. The communication method comprises: a first base station receiving first information sent by a terminal, wherein the first information is related to a first task, and the first task is used for the terminal to send a first signal to a first device; and the terminal receiving the first information from the first device, wherein the first information is returned to the terminal by the first device on the basis of the first signal.

Description

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

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

[0002] Internet of Things (IoT) devices are generally low-power devices, so they can maintain long-term operation based on their own batteries. However, battery life is limited. Once the battery life is exhausted, the IoT device will stop working, affecting users.

[0003] Summary of the Invention

[0004] With the development of technology, a backscatter communication mechanism has been proposed to reduce the problem caused by the limited battery life of IoT devices.

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

[0006] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, wherein a first base station receives first information sent by a terminal; wherein the first information is related to a first task; the first task is used by the terminal to send a first signal to a first device, and the terminal receives first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

[0007] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, comprising:

[0008] The second base station sends configuration information related to the first task to the first base station; wherein the configuration information related to the first task is used to instruct the first base station to send the first information;

[0009] The first information is related to a first task; the first task is for the terminal to send a first signal to a first device, and the terminal to receive first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

[0010] According to a third aspect of an embodiment of the present disclosure, a communication method is provided, the method comprising:

[0011] The terminal sends second information to the first base station, wherein the second information is used to indicate that the first device has the first task; the first task is used for the terminal to send a first signal to the first device, and the terminal receives first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

[0012] According to a fourth aspect of an embodiment of the present disclosure, a first base station is provided, including:

[0013] The task is used for the terminal to send a first signal to a first device, and the terminal receives first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

[0014] According to a fifth aspect of an embodiment of the present disclosure, a second base station is provided, comprising:

[0015] A transceiver module is configured to send configuration information related to a first task to a first base station; wherein the configuration information related to the first task is used to instruct the first base station to send first information; the first information is related to the first task; the first task is used for the terminal to send a first signal to a first device, and the terminal receives first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

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

[0017] The transceiver module is configured to send second information from the terminal to the first base station, wherein the second information is used to indicate that the first device has the first task; the first task is used for the terminal to send a first signal to the first device, and the terminal receives first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

[0018] According to a seventh aspect of an embodiment of the present disclosure, a communication method is provided, comprising:

[0019] The first base station executes the communication method provided by any technical solution of the first aspect;

[0020] The second base station executes the communication method provided by any technical solution of the second aspect;

[0021] The terminal executes the communication method provided by any technical solution of the third aspect.

[0022] According to the eighth aspect of an embodiment of the present disclosure, a communication system is provided, wherein the communication system includes a terminal, a first base station and a second base station; the first base station is configured to provide a communication method according to any technical aspect of the first aspect, the second base station is configured to implement the communication method described in any technical solution of the second aspect, and the terminal is configured to implement the communication method described in any technical solution of the third aspect.

[0023] According to a ninth aspect of an embodiment of the present disclosure, a communication device is provided, wherein the communication device includes:

[0024] one or more processors;

[0025] The processor is used to call instructions to enable the communication device to execute the communication method provided by the first aspect, the second aspect or the third aspect.

[0026] According to the tenth 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 technical solution provided by the embodiment of the present disclosure enables the first information to be successfully sent to the network device in a mobile state when the terminal serves as a reader of the first device.

[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 of the present disclosure and, together with the description, serve to explain the principles of the embodiments of the present disclosure.

[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 wireless communication based on a backscatter transmission mechanism according to an exemplary embodiment;

[0032] FIG1C is a schematic topology diagram illustrating wireless communication using a backscatter transmission mechanism according to an exemplary embodiment;

[0033] FIG1D is a schematic diagram showing wireless communication based on a backscatter transmission mechanism according to an exemplary embodiment;

[0034] FIG1E is a schematic topology diagram illustrating wireless communication using a backscatter transmission mechanism according to an exemplary embodiment;

[0035] FIG1F is a schematic diagram of a device that performs wireless communication using three backscatter transmission mechanisms according to an exemplary embodiment;

[0036] FIG2A is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0037] FIG2B is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0038] FIG3A is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0039] FIG3B is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0040] FIG4A is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0041] FIG4B is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0042] FIG5 is a flow chart showing a communication method according to an exemplary embodiment;

[0043] FIG6A is a schematic structural diagram of a first base station according to an exemplary embodiment;

[0044] FIG6B is a schematic structural diagram of a second base station according to an exemplary embodiment;

[0045] FIG6C is a schematic structural diagram of a terminal according to an exemplary embodiment;

[0046] FIG7A is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0047] FIG7B is a schematic flow chart showing a communication method according to an exemplary embodiment;

[0048] FIG8A is a schematic structural diagram of a terminal according to an exemplary embodiment;

[0049] Fig. 8B is a schematic structural diagram of a communication device according to an exemplary embodiment. DETAILED DESCRIPTION

[0050] Embodiments of the present disclosure provide a communication method and apparatus, communication equipment, a communication system, and a storage medium.

[0051] In a first aspect, an embodiment of the present disclosure provides a communication method, wherein the method includes: a first base station receives first information sent by a terminal; wherein the first information is related to a first task; the first task is used for the terminal to send a first signal to a first device, and the terminal receives the first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

[0052] In some embodiments, the first task is assigned to the terminal by the second base station. For example, the second base station distributes the task information of the first task to the terminal to implement the allocation of the first task. Based on the above embodiment, after the terminal's serving base station is about to or switches to the first base station, the first information obtained by executing the distribution (or allocation) of the first task by the second base station can be sent to the first base station, thereby realizing the function of the terminal acting as a reader of the first device in a mobile state and conveniently sending the first information to the network side.

[0053] In conjunction with some embodiments of the first aspect, the method includes:

[0054] Second information sent by the terminal is received, wherein the second information is used to indicate that the first device has a first task. For example, the second information may be Task 1 indicating that the first device is configured with the first task.

[0055] A first message is sent to the second base station, where the first message is used to request the second base station to send configuration information related to the first task.

[0056] Based on the above embodiment, the terminal also sends second information to the first base station. By sending the second information, the first base station promptly requests configuration information related to the first task from the second base station. In this way, the first base station, through interaction with the second base station, can learn how to send the first information to the second device, thereby ensuring that the transmission of the first information complies with the configuration of the core network device and / or the second device.

[0057] In conjunction with some embodiments of the first aspect, the method further includes:

[0058] A message related to cell handover is received from the second base station.

[0059] In some embodiments, the cell switching-related message includes: configuration information related to the first task.

[0060] The configuration information related to the first task is used to instruct the first base station to send the first information.

[0061] In combination with some embodiments of the first aspect, the configuration information related to the first task includes: its task configuration information, used to instruct the first base station to send the first information to the core network device or the second device; or, connection configuration information, used to instruct the first base station to send the first information to the second base station.

[0062] Based on the above solution, the first base station or the second base station can flexibly choose whether to continue to send the first information by the second base station, and send it to the second device through or without the core network device, thereby having the characteristic of high flexibility. In conjunction with some embodiments of the first aspect, the task configuration information includes:

[0063] First configuration information is used to indicate a first channel, where the first channel is used by the first base station to send the first information to the second device;

[0064] or,

[0065] The second configuration information is used to indicate a second channel, wherein the second channel is used for the first base station to send the first information to the core network device.

[0066] Based on the above solution, the information content of the task configuration information is clearly defined. The first channel and the second channel can be tunnels or pre-established various types of connections.

[0067] In conjunction with some embodiments of the first aspect, the connection configuration information includes:

[0068] Tunnel information, indicating a tunnel between the first base station and the second base station;

[0069] or,

[0070] The connection information indicates the air interface connection between the first base station and the second base station.

[0071] Based on the above solution, the information content of the connection configuration information is clearly defined, and the first base station and the second base station can realize the transmission and reception of the first information through a tunnel or an air interface, thereby facilitating the first base station and the second base station to flexibly select a transmission method for the first information.

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

[0073] Radio Resource Control (RRC) setup request message for idle state;

[0074] RRC recovery request message for inactive state;

[0075] RRC connection establishment completion message for idle state;

[0076] RRC connection recovery complete message for inactive state.

[0077] Based on the above solution, the above second message can be a message for a non-connected terminal to enter a connected state and carry the second information, thereby realizing multiplexing of the second message and reducing signaling overhead.

[0078] In conjunction with some embodiments of the first aspect, the second information includes at least one of the following:

[0079] a base station identifier of the second base station;

[0080] a cell identifier associated with the second base station;

[0081] The task identifier of the first task;

[0082] The terminal serves as a device identifier of the reader, and the reader is configured to send a first signal to the first device and receive first information sent by the first device based on the first signal;

[0083] The device identifier of the first device.

[0084] Based on the above solution, the second information may explicitly or implicitly indicate that the terminal is assigned the first task by the second base station, thereby realizing information multiplexing.

[0085] In conjunction with some embodiments of the first aspect, the device identification of the reader includes at least: a first part;

[0086] The first part includes at least one of the following:

[0087] A base station identifier, indicating the base station that issues the first task;

[0088] The cell identifier indicates the cell where the first task is issued.

[0089] In combination with some embodiments of the first aspect, the device identification of the reader further includes: a second part.

[0090] In conjunction with some embodiments of the first aspect, the second part includes at least one of the following:

[0091] A sequence code indicating the order of the terminal as a reader;

[0092] Random numbers;

[0093] Terminal type code;

[0094] The task identifier of the first task;

[0095] The business code of the first task.

[0096] Based on the above solution, the design of the device identification of the reader, the second information includes the device identification of the reader, which, on the one hand, enables the first base station to know that the terminal has the first task, and on the other hand, it can know which terminal has the first task, realizing the indication of multiple information of one second information, thereby saving signaling overhead.

[0097] In a second aspect, an embodiment of the present disclosure provides a communication method, comprising:

[0098] The second base station sends configuration information related to the first task to the first base station; the configuration information related to the first task is used to instruct the first base station to send the first information; the first information is related to the first task; the first task is used for the terminal to send a first signal to the first device, and the terminal receives the first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

[0099] Based on the above scheme, the second base station assigns the first task to the terminal. Even if the first terminal changes the serving base station to the first base station due to its own mobility, through information interaction with the first base station, the first information collected by the terminal can be successfully sent to the second device through or without passing through the core network device according to the task configuration of the first task.

[0100] In conjunction with some embodiments of the second aspect, the information related to the first task includes: task configuration information or connection configuration information;

[0101] The task configuration information is used by the first base station to send the first information to the core network device or the second device; the first information transmitted to the core network device is used by the core network device to send to the second device;

[0102] The connection configuration information is used by the first base station to send the first information to the second base station.

[0103] Based on the above solution, there are two types of configuration information related to the first task, which makes it convenient for the first base station and / or the second base station to flexibly choose a method for sending the first information to the second device according to their current load rate and other conditions.

[0104] In conjunction with some embodiments of the second aspect, the method further includes:

[0105] A first message sent by the second base station is received, wherein the first message is used to request the second base station to send configuration information related to the first task.

[0106] Based on the above solution, the second base station can send configuration information related to the first task to the first base station based on the first message of the first base station, thereby reducing unnecessary transmission and saving signaling overhead.

[0107] In combination with some embodiments of the second aspect

[0108] The task configuration information includes: first configuration information or second configuration information; wherein the first configuration information indicates a first channel, wherein the first channel is used for the first base station to send the first information to the second device; or the second configuration information indicates a second channel, wherein the second channel is used for the first base station to send the first information to the core network device;

[0109] or,

[0110] The connection configuration information includes: tunnel information or connection information; the tunnel information indicates the tunnel between the first base station and the second base station; the connection information indicates the air interface connection between the first base station and the second base station.

[0111] In combination with some embodiments of the second aspect, the method further includes:

[0112] receiving first information from the first base station according to the connection configuration information;

[0113] According to the task configuration information, the first information is sent to the core network device or the second device; wherein the first information sent to the core network device is used to be sent by the core network device to the second device.

[0114] Based on the above solution, when the second base station sends connection configuration information to the first base station, the second base station will receive the first information from the first base station and send it directly or indirectly to the second device through the first channel or the second channel, thereby realizing information transmission as a reader of the first device when the terminal is in a mobile state.

[0115] In a third aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

[0116] The terminal sends second information to the first base station, wherein the second information is used to indicate that the first device has a first task; the first task is used for the terminal to send a first signal to the first device, and the terminal receives first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

[0117] In conjunction with some embodiments of the third aspect, the second information includes at least one of the following:

[0118] a base station identifier of the second base station;

[0119] a base station identifier of the second base station;

[0120] The task identifier of the first task;

[0121] The terminal serves as a device identifier of the reader, and the reader is configured to send a first signal to the first device and receive first information sent by the first device based on the first signal;

[0122] The device identifier of the first device.

[0123] In conjunction with some embodiments of the third aspect, the second message carrying the second information includes at least one of the following:

[0124] Radio Resource Control (RRC) setup request message for idle state;

[0125] RRC recovery request message for inactive state;

[0126] RRC connection establishment completion message for idle state;

[0127] RRC connection recovery complete message for inactive state.

[0128] In conjunction with some embodiments of the third aspect, the method includes:

[0129] Establishing an RRC connection with the first base station;

[0130] First information is sent to the first base station based on the RRC connection.

[0131] In conjunction with some embodiments of the third aspect, sending the second message to the first base station includes:

[0132] A preset event is detected, and a second message is sent to the first base station.

[0133] In conjunction with some embodiments of the third aspect, the preset event includes at least one of the following:

[0134] The terminal completes the first task of collecting the first information;

[0135] The cache amount of the first information reaches a first threshold;

[0136] The current time reaches the reporting time configured for the first information;

[0137] The cache duration of the first information reaches a first duration;

[0138] The remaining cache space of the terminal is less than the preset value;

[0139] The terminal receives delay-sensitive first information;

[0140] The terminal has business data to send;

[0141] The terminal detects that an updated system message is to be received.

[0142] In conjunction with some embodiments of the third aspect, the method further includes:

[0143] Establish an RRC connection with the access network device;

[0144] The first information is sent based on the RRC connection.

[0145] In conjunction with some embodiments of the third aspect, establishing an RRC connection with an access network device includes:

[0146] Establish an RRC signaling connection with the access device;

[0147] In the case of establishing an RRC signaling connection, a signaling radio bearer SRB1 is established with the terminal.

[0148] In combination with some embodiments of the third aspect, an SRB, SRB2 and / or data radio bearer DRB is established with the terminal.

[0149] In a fourth aspect, a first base station is provided, including:

[0150] The transceiver module is configured to receive first information sent by the terminal; wherein the first information is related to a first task; the first task is used for the terminal to send a first signal to the first device, and the terminal to receive the first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

[0151] In some embodiments in conjunction with the fourth aspect, the transceiver module is further configured to receive second information sent by the terminal, wherein the second information is used to indicate that the first device has the first task;

[0152] A first message is sent to the second base station, where the first message is used to request the second base station to send configuration information related to the first task.

[0153] In some embodiments of the fourth aspect, the transceiver module is also configured to receive messages related to cell switching from the second base station, wherein the messages related to cell switching include: configuration information related to the first task; configuration information related to the first task is used for the first base station to send the first information.

[0154] In some embodiments in conjunction with the fourth aspect, the configuration information related to the first task includes: task configuration information or connection configuration information;

[0155] The task configuration information is used by the first base station to send the first information to the core network device or the second device; the first information transmitted to the core network device is used by the core network device to send to the second device;

[0156] The connection configuration information is used by the first base station to send the first information to the second base station.

[0157] In some embodiments of the fourth aspect, the task configuration information includes:

[0158] First configuration information indicates a first channel, wherein the first channel is used by the first base station to send the first information to the second device;

[0159] or,

[0160] The second configuration information indicates a second channel, wherein the second channel is used by the first base station to send the first information to the core network device.

[0161] In some embodiments of the fourth aspect, the connection configuration information includes:

[0162] Tunnel information, indicating a tunnel between the first base station and the second base station;

[0163] or,

[0164] The connection information indicates the air interface connection between the first base station and the second base station.

[0165] In some embodiments with reference to the fourth aspect, the second message carrying the first information includes at least one of the following:

[0166] Radio Resource Control (RRC) setup request message for idle state;

[0167] RRC recovery request message for inactive state;

[0168] RRC connection establishment completion message for idle state;

[0169] RRC connection recovery complete message for inactive state.

[0170] In some embodiments of the fourth aspect, the second information includes at least one of the following:

[0171] a base station identifier of the second base station;

[0172] a cell identifier associated with the second base station;

[0173] The task identifier of the first task;

[0174] The terminal serves as a device identifier of the reader, and the reader is configured to send a first signal to the first device and receive first information sent by the first device based on the first signal;

[0175] The device identifier of the first device.

[0176] In some embodiments in conjunction with the fourth aspect, the device identification of the reader includes at least: a first part and a second part;

[0177] The first part includes at least one of the following:

[0178] A base station identifier, indicating the base station that issues the first task;

[0179] A cell identifier, indicating the cell where the first task is issued;

[0180] and / or,

[0181] The second part includes:

[0182] A sequence code indicating the order of the terminal as a reader;

[0183] Random numbers;

[0184] Terminal type code;

[0185] The task identifier of the first task;

[0186] The business code of the first task.

[0187] In a fifth aspect, a second base station is provided, comprising:

[0188] A transceiver module is configured to send configuration information related to a first task to a first base station; wherein the configuration information related to the first task is used for the first base station to send the first information; the first information is related to the first task; the first task is used for the terminal to send a first signal to the first device, and the terminal to receive the first information from the first device; the first information is returned to the terminal by the first device based on the first signal. In conjunction with some embodiments of the fifth aspect, the transceiver module is configured to send configuration information related to the first task to the first base station; wherein the configuration information related to the first task is used to instruct the first base station to send the first information;

[0189] The first information is transmitted from the terminal to the first device based on the first task, by sending a first signal, and is triggered by the first signal and transmitted from the first device to the terminal.

[0190] In conjunction with some embodiments of the fifth aspect, the information related to the first task includes: task configuration information or connection configuration information;

[0191] The task configuration information is used by the first base station to send the first information to the core network device or the second device; the first information transmitted to the core network device is used by the core network device to send to the second device;

[0192] The connection configuration information is used by the first base station to send the first information to the second base station.

[0193] In combination with some embodiments of the fifth aspect, the transceiver module is configured to receive a first message sent by the second base station, wherein the first message is used to request the second base station to send configuration information related to the first task.

[0194] In conjunction with some embodiments of the fifth aspect, the task configuration information includes: first configuration information or second configuration information; wherein the first configuration information indicates a first channel, wherein the first channel is used for the first base station to send the first information to the second device; or, the second configuration information indicates a second channel, wherein the second channel is used for the first base station to send the first information to the core network device;

[0195] or,

[0196] The connection configuration information includes: tunnel information or connection information; the tunnel information indicates the tunnel between the first base station and the second base station; the connection information indicates the air interface connection between the first base station and the second base station.

[0197] In combination with some embodiments of the fifth aspect, the transceiver module is configured to receive first information from the first base station according to the connection configuration information; and send the first information to the core network device or the second device according to the task configuration information; wherein the first information sent to the core network device is used to be sent by the core network device to the second device.

[0198] In a sixth aspect, a terminal is provided, the terminal including:

[0199] The transceiver module is configured to cause the terminal to send second information to the first base station, wherein the second information is used to indicate that the first device has a first task; the first task is used for the terminal to send a first signal to the first device, and the terminal to receive the first information from the first device; and the first information is returned to the terminal by the first device based on the first signal. In conjunction with some embodiments of the sixth aspect, the second information includes at least one of the following:

[0200] a base station identifier of the second base station;

[0201] a base station identifier of the second base station;

[0202] The task identifier of the first task;

[0203] The terminal serves as a device identifier of the reader, and the reader is configured to send a first signal to the first device and receive first information sent by the first device based on the first signal;

[0204] The device identifier of the first device.

[0205] In conjunction with some embodiments of the sixth aspect, the second message carrying the second information includes at least one of the following:

[0206] Radio Resource Control (RRC) setup request message for idle state;

[0207] RRC recovery request message for inactive state;

[0208] RRC connection establishment completion message for idle state;

[0209] RRC connection recovery complete message for inactive state.

[0210] In combination with some embodiments of the sixth aspect, the transceiver module is configured to establish an RRC connection with the first base station; and send first information to the first base station based on the RRC connection.

[0211] In combination with some embodiments of the sixth aspect, the transceiver module is configured to detect a preset event and send a second message to the first base station.

[0212] In conjunction with some embodiments of the fifth aspect, the preset event includes at least one of the following:

[0213] The terminal completes the first task of collecting the first information;

[0214] The cache amount of the first information reaches a first threshold;

[0215] The current time reaches the reporting time configured for the first information;

[0216] The cache duration of the first information reaches a first duration;

[0217] The remaining cache space of the terminal is less than the preset value;

[0218] The terminal receives delay-sensitive first information;

[0219] The terminal has business data to send;

[0220] The terminal detects that an updated system message is to be received.

[0221] In combination with some embodiments of the sixth aspect, the transceiver module is further configured to establish an RRC connection with the access network device; and send the first information based on the RRC connection.

[0222] In conjunction with some embodiments of the sixth aspect, the transceiver module establishes an RRC signaling-only connection with the access device;

[0223] In the case of establishing an RRC signaling connection, a signaling radio bearer SRB1 is established with the terminal.

[0224] In combination with some embodiments of the sixth aspect, the terminal is established with SRB, SRB2 and / or data radio bearer DRB.

[0225] A seventh aspect provides a communication method, comprising:

[0226] The first base station executes the communication method provided by any technical solution of the first aspect.

[0227] The second base station executes the communication method provided by any technical solution of the second aspect.

[0228] The terminal executes the communication method provided by any technical solution of the third aspect.

[0229] In an eighth aspect, an embodiment of the present disclosure provides a communication device, the communication device including:

[0230] one or more processors;

[0231] The processor is used to call instructions to enable the communication device to execute the communication method described in the optional implementation manner of the first aspect, the second aspect or the third aspect.

[0232] In a ninth aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, which, when the instructions are executed on a communication device, enable the communication device to execute the communication method described in the optional implementation of the first aspect, the second aspect, or the third aspect.

[0233] In an eleventh aspect, an embodiment of the present disclosure provides a program product. When the program product is executed by a communication device, the communication device executes the communication method described in the optional implementation manner of the first aspect, the second aspect, or the third aspect.

[0234] In a twelfth aspect, an embodiment of the present disclosure provides a computer program, which, when executed on a computer, enables the computer to execute the communication method described in the optional implementation manner of the first aspect, the second aspect, or the third aspect.

[0235] It is understandable that the first base station, the second base station, the terminal, the first device, the second device, the communication device, the communication system, the storage medium, the program product, and the computer program are all used to perform the method provided 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.

[0236] The present disclosure provides a communication method and apparatus, a communication device, a communication system, and a storage medium. In some embodiments, the terms "communication method" and "information processing method" are interchangeable; the terms "information indicating device" and "information processing device" are interchangeable; and the terms "communication system" and "information processing system" are interchangeable.

[0237] 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.

[0238] 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.

[0239] 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.

[0240] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when articles such as "a", "an", "the" in English are used in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0241] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0242] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0243] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "in one case A, in another case B," or "in one case A, in 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 same applies when there are more branches such as A, B, and C.

[0244] 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.

[0245] 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.

[0246] 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.

[0247] In some embodiments, terms such as "...", "determine...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0248] 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.

[0249] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0250] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0251] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "base station (cell)", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving base station", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0252] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0253] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0254] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0255] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0256] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0257] 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.

[0258] FIG1A is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0259] As shown in FIG1A , a communication system 100 includes a terminal 101 , an access network device 102 , and a core network device 103 .

[0260] In some embodiments, the terminal 101 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.

[0261] In some embodiments, the access network device 102 can be, for example, a node or device that accesses the terminal to the 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.

[0262] 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.

[0263] 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.

[0264] In some embodiments, the core network device 103 may be a single device including the first network element 1031, or may be multiple devices or a group of devices, each including the first network element 1031. A 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).

[0265] In some embodiments, the first network element 1031 is, for example, an access and mobility management function (AMF).

[0266] In some embodiments, the first network element 1031 is, for example, a Mobility Management Entity (MME).

[0267] In some embodiments, the first network element 1031 is used for access and mobility management, such as registration management, connection management, and mobility management, etc., but the name is not limited thereto.

[0268] In some embodiments, the first network element 1031 may be a network element independent of the core network device.

[0269] In some embodiments, the core network may further include a second network element, etc. The second network element may include: User Data Management (UDM), etc.

[0270] 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.

[0271] 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 part of the entities shown in FIG1A , or may include other entities outside of 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.

[0272] 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).

[0273] In some cases, IoT devices are often powered by traditional batteries with limited lifespans, negatively impacting the user experience. The expected astronomical growth in the number of IoT network devices, coupled with the massive number of IoT devices, has pushed maintenance expenses, including labor and battery costs, to a whole new level. Billions of traditional batteries are discarded each year, with only a small fraction effectively recycled, negatively impacting the Earth's ecosystem. Maintaining IoT network operations and replacing batteries can be extremely challenging in extreme environmental conditions. Battery-free IoT communications have been proposed to improve network performance and sustainability, expanding their application scenarios. Furthermore, battery-free communications are more environmentally friendly and safer for children and the elderly. By eliminating traditional batteries, device size and cost can be significantly reduced, paving the way for a variety of new applications.

[0274] In some embodiments, various low power wide area (LPWA) technologies, such as machine type communication (MTC), narrowband Internet of Things (NB-IoT), reduced capability (RedCap), etc., have been developed to meet the growing needs of vertical fields. These LPWA technologies achieve low cost, low power consumption and large-scale connectivity, which can meet the requirements of many applications. However, there are still many use cases and applications that cannot be solved in the following situations. First, battery-powered devices are not applicable, such as in extreme environmental conditions (such as high voltage, extremely high / low temperature, humid environment). Second, maintenance-free equipment is required (for example, traditional batteries that do not need to be replaced in the device). Finally, ultra-low complexity, very small device size / form factor (such as mm thickness), longer life cycle, etc. are required.

[0275] Ambient-powered IoT is a promising technology that can address the aforementioned unmet needs. An ambient-powered IoT device is an IoT device powered by energy harvesting, either without a battery or with limited energy storage capabilities (e.g., using capacitors), by harvesting radio waves, light, motion, heat, or any other suitable power source.

[0276] Energy obtained from the environment can drive data transmission and wireless communication of sensing nodes. The current mainstream low-power IoT communication chips (such as BLE, LoRa, NB-IoT) have a transmit and receive power consumption of tens or even hundreds of milliwatts, while the energy obtained by environmental energy harvesting is only at the microwatt level, which is unable to drive these types of nodes to work. Therefore, a new wireless communication technology is needed to reduce communication energy consumption to tens of microwatts or even less than ten microwatts. The current mainstream method uses backscatter communication technology. Backscatter Communications 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 Everything". The methods that can be used include backscatter transmission (Backscatter Communications) technology.

[0277] As shown in Figure 1B, backscatter transmission can utilize the principle of RF signal backscattering to design extremely low-power modulation and transmission technologies. A reader sends a physical layer signal to an ambient IoT device. This physical layer signal can be a pulse signal or other AC signal. In some embodiments, this physical layer signal is used to provide energy for the ambient IoT device to transmit the signal. Therefore, this physical layer signal can be referred to as an excitation signal or trigger signal. For example, since a portion of the excitation signal is reflected when it reaches the ambient IoT device, the ambient IoT device can adjust the matching between the receiving antenna and the impedance according to the intended information to enhance the reflection of the incident excitation signal and modulate the acquired sensor data onto the reflected signal to complete the data transmission. This process is similar to a reflector. Compared to other communication technologies, backscatter transmission does not require complex RF structures, reducing the use of components such as power amplifiers, high-precision crystal oscillators, duplexers, and high-precision filters. It also does not require complex baseband processing. Therefore, it can simplify the design of ambient IoT devices and significantly reduce the cost of ambient IoT device nodes. Ambient IoT devices are IoT devices that use ambient energy to operate. This ambient energy can include the aforementioned wireless signal energy, as well as other environmental capabilities such as geothermal energy and / or light energy.

[0278] Here, the device that sends a physical layer signal to the ambient IoT device and triggers the ambient IoT device to return a reflected signal can be called an anchor point of the ambient IoT device reader.

[0279] It is worth noting that an ambient IoT device is a device that uses the backscatter transmission mechanism for wireless communication. In specific implementations, other devices can also use the backscatter transmission mechanism for wireless communication.

[0280] The anchor point or reader of the ambient IoT device may be a network node of a wireless communication network, such as an access network device, a relay node (or intermediate node), or a terminal.

[0281] Backscatter transmission network topologies can include one of the following:

[0282] Topology 1: As shown in Figure 1C, uplink (UL) and downlink (DL) data transmission is carried out directly between ambient IoT devices and access network devices.

[0283] Topology 2: As shown in Figure 1D, DL and UL data transmission occurs indirectly between ambient IoT devices and access network equipment. Intermediate nodes (also called auxiliary nodes) provide forwarding services. These intermediate nodes can include relays, integrated access backhaul (IAB), user equipment (UE), and repeaters (RP).

[0284] Topology 3: As shown in Figure 1E, ambient IoT devices and access network devices directly transmit or receive data in the DL or UL. Auxiliary nodes are located on the UL or DL, responsible for receiving or sending UL or DL ​​data. Examples of auxiliary nodes include relays, integrated access backhaul (IAB) nodes, terminals, and network-controlled repeaters (NCRs).

[0285] Topology 4: As shown in Figure 1E, ambient IoT devices and UEs directly receive and transmit data on the downlink and uplink. The UE collects data and forwards it to the network.

[0286] As shown in Figure 1F, devices that use the backscatter transmission mechanism for wireless communication can be divided into three types:

[0287] Device A: has no energy storage, cannot generate or amplify signals independently, and can only perform backscatter transmission.

[0288] Device B: Has energy storage, cannot generate signals independently, and can only perform backscatter transmission. The use of stored energy can include amplification of the backscattered signal.

[0289] Device C: has energy storage and can independently generate signals, that is, it has active radio frequency (RF) components for transmission.

[0290] In the embodiment of the present disclosure, considering the large number of terminals, and therefore considering the coverage range, the terminal may also be selected as an anchor point or reader for a device that communicates using the backscatter principle.

[0291] 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 use in a communication system 100, the method comprising:

[0292] S2101: Send the second information.

[0293] In some embodiments, the communication system 100 includes: a first base station, a second base station, a terminal, a first device, and a second device.

[0294] In some embodiments, the second information indicates that the first device has the first task. For example, the second information may indicate that the first device is configured with the first task. For another example, the second information may directly or indirectly indicate that the first device has the first task.

[0295] In some embodiments, the task information of the first task may be distributed to the terminal by the second base station.

[0296] In some embodiments, the first task is a task distributed (ie, assigned) by the second base station to the terminal.

[0297] The first task may be a task in which the terminal acts as a reader to read information from the first device. The first task may be referred to as a collection task, etc.

[0298] In some embodiments, the first task may be a task for the terminal to collect arbitrary information of the first device.

[0299] In some embodiments, the first base station and the second base station are different base stations.

[0300] In some embodiments, the first base station and the second base station are adjacent base stations or spaced base stations.

[0301] In some embodiments, the first base station is a target base station, and the target base station is configured with a target cell of the terminal.

[0302] In some embodiments, the first base station is a current serving base station of the terminal, and the second base station may be one or more previous serving base stations of the terminal.

[0303] In some embodiments, the second base station is a source base station. The source base station is configured with a source base station of the terminal.

[0304] The terminal switches from the source base station to the target base station through a cell reselection process or a cell handover process. The terminal switches from the source base station to the target base station through a cell reselection process and / or a cell handover process.

[0305] In one embodiment, the second information may be carried in the second message.

[0306] In some embodiments, the terminal sends a second message to the second base station.

[0307] In some embodiments, the terminal sends the second message within a cell of the second base station.

[0308] In some embodiments, the second message may be a message related to cell reselection.

[0309] In some embodiments, the second message may be a message related to cell handover.

[0310] In some embodiments, the second message may be any message sent after the terminal is switched to the target base station.

[0311] The terminal can perform cell reselection in a non-connected state, which includes an idle state and / or an inactive state.

[0312] Cell switching when the terminal is in connected state.

[0313] For a terminal in a non-connected state, the second message carrying the first information includes at least one of the following:

[0314] Radio Resource Control (RRC) setup request message for idle state;

[0315] RRC recovery request message for inactive state;

[0316] RRC connection establishment completion message for idle state;

[0317] RRC connection recovery complete message for inactive state.

[0318] Here, the RRC setup request message, RRC recovery request message, RRC connection setup complete message, and RRC connection recovery complete message may all be messages related to cell reselection. In some embodiments, the second message may also include: an RRC reconfiguration message after the terminal enters a connected state from a non-connected state.

[0319] In some embodiments, the second message may be any access stratum (AS) message.

[0320] Exemplarily, the second message may be an RRC message, a MAC layer message, or uplink control information (UCI).

[0321] In some embodiments, the second information includes one or more bits explicitly indicating that the first device is configured with the first task.

[0322] In some other embodiments, the second information includes one or more bits that implicitly indicate that the first device is configured with the first task. The bits that implicitly indicate the first task are also multiplexed to indicate other information contents.

[0323] In some embodiments, a base station identifier of the second base station;

[0324] The cell identifier associated with the second base station may include but is not limited to the cell identifiers of one or more cells configured by the second base station.

[0325] The task identifier of the first task;

[0326] The terminal serves as a device identifier of the reader, and the reader is configured to send a first signal to the first device and receive first information sent by the first device based on the first signal;

[0327] The device identifier of the first device.

[0328] The first device here may be the aforementioned device that performs wireless communication using the backscatter transmission mechanism. For example, the first device may be any of the communication devices shown in FIG. 1F .

[0329] In some embodiments, the base station identifier included in the second information is the identifier of the second base station, that is, the base station identifier indicated by the second information is the second base station, not the first base station, which means that the terminal currently has the first task distributed by the second base station.

[0330] The cell identifier carried in the second information is the cell identifier of the second base station, that is, the second information indicates the cell of the second base station, not the cell of the first base station. The second information implicitly indicates that the terminal currently has the first task distributed by the second base station.

[0331] The second information carries the task identifier of the first task. The first base station can determine whether the first task is assigned by itself or by the second base station based on the task identifier. The assignment here can also be understood as distribution.

[0332] Exemplarily, the task identifier may be generated based on the base station that distributes the first task, and the task identifier may include a base station identifier and / or a cell identifier. The base station identifier included in the task identifier indicates the base station that distributes the first task. The cell identifier included in the task identifier indicates the base station that distributes the first task.

[0333] As another example, the task identifier of the first task can be determined by the core network device or the second device. In this case, different tasks have different task identifiers. If the first base station distributes the task itself, the first base station will locally store the task identifier of the corresponding task. If the task identifier does not match the task identifier locally stored by the first base station, it indicates that the terminal has been configured with the first task by the second base station.

[0334] The terminal serves as a device identifier of the reader. The device identifier may be determined by the first base station, the core network device, and / or the second device.

[0335] The device identification of the reader may also include: an identification of a base station that distributes the first task or an identification of a cell that distributes the first task.

[0336] If the reader includes a base station identifier and / or a cell identifier, then after receiving the device identifier of the reader, the first base station can determine whether the terminal has the first task distributed by the second base station.

[0337] In other embodiments, the reader may not include a base station identifier and / or a cell identifier, and the reader identifier may be a randomly generated number, or a serial number of the reader as the first device, etc. In this way, after the first base station receives the device identifier of the terminal as a reader, it can be matched with the device identifier of the reader associated with its own distribution task stored by the first base station. If the match fails, it means that the terminal has a first task distributed by other base stations (i.e., the second base station).

[0338] In some embodiments, the device identification of the first device may correspond to the task identification of the first task, the device identification of the reader of the first device, etc. Thus, after receiving the device identification of the first device, the first base station can also determine whether the terminal has a first task assigned by another base station.

[0339] The task identifier of the first task, the device identifier of the first device, and the identifier of the reader may also be allocated by the core network device and / or the second device.

[0340] The core network device may include: AMF and / or UDM, etc. The second device may include but is not limited to a device for receiving the first information and / or a device for issuing the first task.

[0341] In some embodiments, the device identification of the reader includes at least: a first part and / or a second part.

[0342] The first part includes at least one of the following:

[0343] A base station identifier, indicating the base station that issues the first task;

[0344] The cell identifier indicates the cell where the first task is issued.

[0345] The second part includes:

[0346] A sequence code indicating the order of the terminal as a reader;

[0347] Random numbers;

[0348] Terminal type code;

[0349] The task identifier of the first task;

[0350] The business code of the first task.

[0351] In some embodiments, the terminal can know whether it has currently changed its service base station based on its own mobility. If the service base station has been changed and the terminal has been configured with a first task by one or more previous service base stations, the terminal can use the indication information in the second information to indicate that it has a first task configured by other base stations.

[0352] In some embodiments, the first task is for the terminal to send a first signal to a first device, and the terminal to receive first information from the first device. The first information is sent to the terminal by the first device based on a trigger (or stimulus) of the first signal.

[0353] In some embodiments, the task information of the first task is distributed to the terminal by the second base station.

[0354] The first task may be related to the terminal transmitting a first signal and collecting first information. The first task may be a task of collecting first information. In other embodiments, the second information may indicate that the terminal has collected first information from a first device. The first device may be any device that uses a backscatter transmission mechanism for wireless communication.

[0355] In some other embodiments, the second information indicates the first information to be sent by the terminal to the network side. The first information may be any information transmitted to the terminal by a device that uses a backscatter transmission mechanism for wireless communication.

[0356] In some embodiments, the task information may include at least one of the following:

[0357] Task identification;

[0358] Task description;

[0359] a device identifier of the first device;

[0360] The terminal acts as a device identifier of the reader;

[0361] Business code of the first task;

[0362] a device type of the first device involved in the first task;

[0363] Resource information, wherein the resource information indicates resources used by the terminal to send the first information to the base station. The task identifier may be a uniquely identifiable coding sequence and / or character string allocated by the second device.

[0364] A task identifier indicates a task to be performed by the first device, and the task may be related to the first information reporting of the first device.

[0365] The task description may indicate the service type, service identifier, data type and / or data volume of the first information to be uploaded by the first device, etc. involved in the task to be performed;

[0366] Wireless configuration: configuring the terminal to wirelessly send the first information.

[0367] In some embodiments, the task description may also include:

[0368] The area information of the task to be performed may include but is not limited to a cell identifier, a base station identifier and / or a tracking area (TA) identifier.

[0369] In other embodiments, the task information may further include:

[0370] Device information, which identifies the first device that executes the task to be executed. For example, the device information may indicate the type of device and the functions supported by the device.

[0371] Wireless configuration may indicate configuration for wirelessly sending a first signal and receiving the first information. For example, the configuration information may involve configuration of wireless resources, power configuration, and / or transmission mode configuration;

[0372] Delay-sensitive information indicates whether the first information sent by the first device is delay-sensitive. If the first information is delay-sensitive, the target terminal and / or network device must promptly send the first information to the second device after receiving it from the first device. If the first information is not delay-sensitive, the target terminal and / or network device may temporarily cache the first data and wait until an appropriate time to send it to the second device.

[0373] In one embodiment, the task information may be generated by the second device and / or the core network device and sent to the second base station, and distributed to the terminal by the second base station.

[0374] In some embodiments, the first signal at least triggers the first device to send the first information. That is, in some cases, the first signal can serve as a trigger signal for the first device to send the first information.

[0375] In some embodiments, the first signal is an excitation signal for the first device, and the first signal excites the first device to send the first information.

[0376] In some embodiments, the first signal provides energy for the first device to send the first information. Exemplarily, the first device receives the first signal and sends the first information based on the signal energy of the first signal.

[0377] In some embodiments, the first information may include data and / or signaling. For example, the first information may include pre-configured data on the first device and data and / or signaling written to the first device by a third device. For example, the third device may be various sensors. The pre-configured data herein may be any data written to the first device before the first device is put into use.

[0378] Exemplarily, the preset data of the first device includes but is not limited to one of the following:

[0379] a device identifier of the first device;

[0380] device type information of the first device;

[0381] The identification and / or target information of the target carrying the first device. For example, the target carrying the first device may include an object such as a courier. The pre-set data on the first device may include the identification of the target and / or information about the type of courier, the origin and destination of the courier, and / or security information.

[0382] In some embodiments, although the first device does not have its own power supply or only has a power supply module for temporary energy storage or a power supply module with limited power supply capacity, the first device has storage space and serves as an external storage device for a third device, allowing the third device to write data and / or signaling. In this way, even if the first device does not have pre-configured data, the first information in the first device is dynamically updated.

[0383] The first information may be information returned to the terminal based on a reflection-scattering transmission mechanism.

[0384] The first information may be carried by the reflected signal shown in FIG. 1B .

[0385] In some embodiments, the terminal is in a non-connected state, and when the terminal moves in the non-connected state, it switches to the first base station through a cell reselection process.

[0386] Exemplarily, the non-connected state may include: an idle state and / or an inactive state. The idle state may be an RRC idle state. The inactive state may be an abbreviation of the RRC inactive state.

[0387] In some embodiments, the terminal is in a connected state, and when the terminal moves in the connected state, it switches to the first base station through a cell switching process.

[0388] In some embodiments, the terminal may be any communication terminal that includes a power supply module. For example, the terminal may be any type of communication terminal that includes a battery. For example, the communication terminal may include, but is not limited to, a mobile phone, a tablet computer, an in-vehicle device, a wearable device, a smart home device, and / or a smart office device.

[0389] In some embodiments, the terminal may be a communication device having its own battery.

[0390] For example, the terminal has a relatively large battery capacity, which may include various rechargeable and rechargeable batteries.

[0391] The terminal may be a reader of the first device.

[0392] In some embodiments, the first device may be a wireless device that does not have a power supply module, a wireless device whose power supply capability of its power supply module is extremely weak, a wireless device that has a power supply module but the power supply module has lost its power supply capability, or any wireless device that supports backscatter communication.

[0393] In some embodiments, the first device may be any passive device, an ambient energy device, or an ambient IoT device.

[0394] The first device may be device A, device B and / or device C shown in FIG. 1F .

[0395] S2102: Send a first message to the second base station.

[0396] When the first task is sent to the terminal by the second base station, the terminal may lack various task information related to the first task. For example, the first base station may lack some configuration information required to send the first information to the second device. Therefore, in some embodiments, the first message is used to request the second base station to send configuration information related to the first task. This configuration information related to the first task may include task configuration information or connection configuration information.

[0397] After receiving the second information indicating that the first device is configured with the first task, one or more messages are sent to the second base station. These messages can be referred to as first messages.

[0398] In some embodiments, the second message may or may not include the second information received from the terminal.

[0399] In some embodiments, the second message may carry the task identifier of the first task indicated by the second information, the device identifier of the terminal as a reader, and / or the device identifier of the first device, etc. If the second message carries these contents, it is convenient for the second base station to know the configuration information of which task is currently requested by the first base station.

[0400] In some embodiments, the first message may be a first message sent between base stations through various transmission methods such as an air interface, a tunnel and / or a backhaul link through a core network.

[0401] In some embodiments, the first message may be used by a first base station to request a second base station for a transmission configuration of the first information. The transmission configuration may include the aforementioned task configuration information and / or connection configuration information.

[0402] In some embodiments, the first message may be used by the first base station to request task configuration information and / or connection configuration information from the second base station.

[0403] In some embodiments, the task configuration information is used by the first base station to send the first information to the core network device or the second device.

[0404] After the first base station receives the task configuration information from the second base station, the first base station can send the first information received from the terminal from the first device directly or indirectly to the second device according to the task configuration information without passing through the second base station.

[0405] After the first base station receives the connection configuration information from the second base station, the first base station may send the first information to the second base station according to the connection configuration information, and the second base station may send the first information to the second device.

[0406] In some embodiments, the task configuration information is configuration information of the first task, and the configuration information can be used for transmitting the first information of the first device.

[0407] Exemplarily, the first device may be device A, device B and / or device C shown in FIG. 1F .

[0408] The second device may be any endpoint that receives the first information.

[0409] The second device may include but is not limited to a server or an application function (AF).

[0410] Exemplarily, the first device is an IoT device, and the second device may be an IoT server.

[0411] In some embodiments, the second device may be any network device located within the trust domain of the mobile communication network.

[0412] In some embodiments, the second device may be any network device located in the trust domain of the mobile communication network. Such a second device may be connected to the mobile communication network through a network open function or the like.

[0413] S2103: The second base station sends configuration information related to the first task to the first base station.

[0414] In some embodiments, the second base station sends task configuration information to the first base station.

[0415] In some other embodiments, the second base station sends connection configuration information to the first base station.

[0416] The task configuration information and the connection configuration information here may both be configuration information related to the first task.

[0417] The configuration information related to the first task can be used to instruct the first base station to send the first information.

[0418] In some embodiments, the second base station sends configuration information related to the first task to the first base station through a message related to terminal cell switching.

[0419] In some embodiments, the second base station sends configuration information related to the first task to the first base station through an X2 or Xn message.

[0420] In some embodiments, the second base station sends configuration information related to the first task to the first base station through a GTP tunnel or the like.

[0421] In some other embodiments, the second base station sends configuration information related to the first task to the first base station through the Xn interface or the Xn interface.

[0422] In some embodiments, the task configuration information may be routing information for routing the first information directly from the first base station through the core network device. The routing information may include one or more network nodes for routing the first information, and the network nodes in this case do not include the second base station.

[0423] In some embodiments, the task configuration information includes:

[0424] First configuration information is used to indicate a first channel, where the first channel is used by the first base station to send the first information to the second device;

[0425] or,

[0426] The second configuration information is used to indicate a second channel, wherein the second channel is used for the first base station to send the first information to the core network device.

[0427] In response to the task configuration information including the first configuration information, the first base station sends the first information through the first channel.

[0428] In response to the task configuration information including the second configuration information, the first base station sends the first information through the second channel.

[0429] Exemplarily, the first configuration information may include: a channel identifier and / or a connection identifier of the first channel. For example, the channel identifier may include a tunnel identifier. The connection identifier may include an identifier of an air interface resource corresponding to an X2 or Xn interface.

[0430] In some embodiments, the first configuration information may further include: a destination address of the first channel, where the destination address may be an Internet Protocol (IP) address of the second device.

[0431] In some embodiments, the connection configuration information includes:

[0432] Tunnel information, used to indicate a tunnel between the first base station and the second base station;

[0433] or,

[0434] The connection information is used to indicate the air interface connection between the first base station and the second base station.

[0435] Exemplarily, the tunnel between the first base station and the second base station may be a GTP tunnel.

[0436] The connection information may indicate information of the Xn and / or X2 interfaces.

[0437] Of course, the above are merely examples of task configuration information and / or connection configuration information, and the specific implementation is not limited to the above examples.

[0438] S2104: The terminal sends the first information.

[0439] In some embodiments, the terminal sends first information to the first base station.

[0440] In some embodiments, the terminal sends the first information within a cell of the first base station.

[0441] In some embodiments, the first information is related to the first task.

[0442] In the first embodiment, the first information is information received from the first device when the terminal performs the first task.

[0443] In some embodiments, the first base station receives a message including first information and related to cell switching.

[0444] In some embodiments, the first base station receives a message including first information and related to cell reselection.

[0445] In some embodiments, the first base station receives any message containing the first information and sent by the terminal after switching or reselecting to the target cell.

[0446] In other embodiments, the first message may be an RRC message, a MAC layer message, or uplink control information (UCI).

[0447] In some embodiments, the first information and the second information may be sent to the first base station by the terminal through different messages, or may be sent to the first base station through the same message.

[0448] If the first information and the second information are sent to the first base station by the same message of the terminal, steps S2101 and 2104 may be combined into one step.

[0449] If different messages of the first information terminal and the second information terminal are sent to the first base station, steps S2101 and S2104 are different steps.

[0450] In some embodiments, the terminal sends the collected first information to the first base station in a timely manner (eg, in real time).

[0451] In other embodiments, the terminal may cache the first information of the first device and send the first information to the first base station when no preset event is detected. In this way, when the first base station serves as the serving base station of the terminal, the terminal does not send the first information to the first base station.

[0452] The preset event includes but is not limited to at least one of the following:

[0453] The terminal completes the first task of collecting the first information association;

[0454] The cache amount of the first information reaches a first threshold;

[0455] The current time reaches the reporting time configured for the first information;

[0456] The cache duration of the first information reaches a first duration;

[0457] The remaining cache space of the terminal is less than the preset value;

[0458] The terminal receives delay-sensitive first information.

[0459] The cache amount of the first information here may be the total amount of data of the first information of one or more second devices.

[0460] When the cache amount of the first information reaches a first threshold, the terminal exits the non-connected state and enters the connected state, and reports the cached first information to the network device.

[0461] In some cases, the periodic or irregular reporting of the cached first information is configured. If the reporting time is reached and the terminal has cached first information that has not been reported in the flying connection state, it can be considered that a preset event is detected.

[0462] In some implementations, the cache time of the first information is relatively long. In order to report it as quickly as possible, even when the cache time is relatively long and the data volume is relatively small, the connection state is entered to report the first information to the network device side in a timely manner.

[0463] In some cases, the terminal caches the first information of one or more first devices. For example, when caching the first information of multiple first devices, the multiple first devices may be devices of the same type, or devices that need to report data of the same type.

[0464] If the amount of data currently cached by the terminal is large, the cache space in the terminal will be occupied. When the remaining cache space of the terminal gradually decreases to a certain extent, for example, when it decreases to less than a preset value, it can be considered that a preset event is detected.

[0465] In some embodiments, when the terminal receives the first information sent by the second device but finds that the first information is delay-sensitive information and needs to be reported in a timely manner, it can also be considered that a preset event is detected.

[0466] In other embodiments, if the terminal itself has business data to be reported, or, by monitoring the system message update, the terminal needs to enter the connected state, and the terminal happens to have the first information to be sent at this time, then the first information can also be sent in the first message triggered by the terminal's own business data reporting and / or system message update, thereby informing the network device that the current terminal has cached the first information.

[0467] When the terminal sends the first information, the first base station will receive the first information sent by the terminal.

[0468] S2105: The first base station sends first information.

[0469] In some embodiments, the first base station sends the first information according to the task configuration information.

[0470] In some embodiments, according to the task configuration information, the first information is sent to the second device through a first channel between the first base station and the second device.

[0471] In other embodiments, according to the task configuration information, the first information is sent to the core network device through the second channel between the first base station and the core network device, and the first information is sent to the second device by the core network device through a third channel.

[0472] In some implementations, the first channel may be a tunnel between the first base station and the second device, and the tunnel may include but is not limited to an Internet Protocol (IP) tunnel.

[0473] In some embodiments, the second channel may include a tunnel between the core network device and the access network device. The tunnel may include, but is not limited to, a General Packet Radio Service (GPRS) Tunneling Protocol (GTP) tunnel. GPRS stands for General Packet Radio Service. The second channel may also be a Next Generation Interface (NGAP) protocol connection.

[0474] In some embodiments, the first base station sends the first information according to the connection configuration information.

[0475] In some embodiments, the first base station transmits the first information to the second base station using a GTP tunnel, an Xn interface, or an X2 interface between the first base station and the second base station based on the connection configuration information. For example, an XnAP message containing the first information is transmitted to the second base station over the Xn interface. Xn application protocol is an abbreviation for XnAP, which can be translated into "Xn Application Protocol" in Chinese.

[0476] The first information sent to the second base station can be sent by the second base station to the second device. For example, the second base station sends the first information to the second device via an IP tunnel between the second base station and the second device. In another example, the second base station sends the first information to the second device via a channel between the second base station and a core network device, and the core network device then sends the first information to the second device.

[0477] The core network device receiving the first information here includes but is not limited to: a user plane function (UPF).

[0478] In some embodiments, the method further comprises:

[0479] The second base station selects a terminal to perform the first task according to the third information.

[0480] In some embodiments, the third information includes one of the following:

[0481] Capability information, indicating whether the terminal supports the reader as the first device;

[0482] Indication information indicating whether the terminal agrees or desires to serve as the reader of the first device.

[0483] In some embodiments, the third information further includes at least one of the following:

[0484] Proposed spatiotemporal information, indicating the time information and / or spatial information that the terminal agrees with or expects to be the reader of the first device;

[0485] Bandwidth information, indicating the radio frequency information used when the terminal acts as a reader.

[0486] Of course, the above is just an example of the third information, and the specific implementation is not limited to the above example.

[0487] The second base station receives the third information from the terminal and / or receives the third information from the core network device. For example, the UDM and / or UDR of the core network device stores part of the third information and obtains the entire information. The second base station may obtain the third information from the UDM or UDR based on forwarding or transparent transmission of the AMF.

[0488] According to the third information, a terminal that supports and agrees (or desires or is willing) to serve as a reader is selected.

[0489] In some embodiments, the third information may further include one of the following:

[0490] Time information, indicating the time at which the target terminal agrees or expects to act as a reader;

[0491] Spatial information, indicating the location area in which the target terminal agrees or expects to act as a reader;

[0492] Status information indicates whether the target terminal agrees or expects to act as a reader. This terminal status may be related to the terminal's load rate, whether the terminal has service data to send, the terminal's remaining battery power, and / or the terminal's temperature.

[0493] For example, the time information may indicate that the target terminal may act as a reader when its own traffic volume is generally relatively low.

[0494] For another example, the time information may indicate that the target terminal has free traffic or is in a low-rate area and can act as a reader.

[0495] For another example, the status information may indicate that the terminal itself can act as a reader when it has no service data to send.

[0496] For example, the status information may indicate that the terminal can act as a reader when the remaining power of the terminal itself is greater than a power threshold.

[0497] For another example, the status information may indicate that the terminal can act as a reader when its own temperature is lower than a temperature threshold.

[0498] By sending the third information, the communication interference of the target terminal itself when the target terminal acts as the first device reader is reduced, thereby ensuring the communication quality of the target terminal itself.

[0499] In other embodiments, the third information is reported to the core network device, and the terminal serving as the reader of the first device can be selected by the core network device. In still other embodiments, the third information can be sent to the second device, and the terminal serving as the reader of the first device can be selected by the second device.

[0500] After the core network device and / or the second device is selected as the reader of the first device, the device information of the reader of the first device is sent to the second base station.

[0501] In summary, in the embodiments of the present disclosure, when the terminal that collects the first information of the first device enters from one cell to another cell and changes from connecting to one base station to connecting to another base station due to its own mobility, how to send the first information to the second device.

[0502] FIG2B is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2B , the present disclosure embodiment relates to a communication method for use in a communication system 100, the method comprising:

[0503] S2201: The second base station sends a message related to cell switching, where the message related to cell switching includes configuration information related to the first task.

[0504] In some embodiments, the communication system 100 includes: a first base station, a second base station, and a terminal.

[0505] In some embodiments, the communication system 100 further includes: a first base station, a second base station, a terminal, a first device, and a second device.

[0506] In some embodiments, the second base station serves as a source base station for the terminal and sends a message related to cell switching to the first base station serves as a target base station.

[0507] Exemplarily, the message related to cell switching may include: a cell switching request message.

[0508] In the embodiment of the present disclosure, the message related to the cell handover reliably includes configuration information related to the first task. The configuration information related to the first task can be used by the first base station to send the first information.

[0509] For the relevant description of the first task here, please refer to the relevant description of the embodiment shown in FIG2A .

[0510] For the description of the configuration information related to the first task here, reference can also be made to the relevant description of the embodiment shown in FIG. 2A .

[0511] S2202: The first information sent by the terminal.

[0512] In some embodiments, the first information is related to the first task.

[0513] Exemplarily, the first information may be a partial or complete execution result of the first task.

[0514] As another example, the first information may be information collected from the first device when the terminal performs the first task.

[0515] For the relevant description of the first device here, reference can be made to the relevant description of the embodiment shown in FIG2A .

[0516] In some embodiments, the terminal performing the first task may include:

[0517] The terminal sends a first signal to the first device; after receiving the first signal, the first device sends the first information under the stimulation of the first signal;

[0518] The terminal receives first information from the first device;

[0519] The task information of the first task is distributed to the terminal by the second base station, that is, the terminal receives the task information of the first task from the second base station.

[0520] For the description of the task information, the first signal and / or the first information, please refer to the embodiment shown in FIG2A .

[0521] S2203: The first base station sends first information.

[0522] In some embodiments, the first base station sends the first information according to configuration information related to the first task.

[0523] The specific step of the first base station sending the first information here can be found in step S2105 shown in FIG2A .

[0524] FIG3A is an intentional diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a communication method for a first base station, the method comprising:

[0525] S3101: Receive the second information.

[0526] In some embodiments, second information sent by the receiving terminal.

[0527] In some embodiments, the second information may be carried in the second information.

[0528] In some embodiments, the second information is used to indicate that the terminal or the first device has the first task, that is, the second information may directly or indirectly indicate that the first device is configured with the first task.

[0529] The task information of the first task may be distributed to the terminal by the second base station.

[0530] The first base station may be a target base station of the terminal. The first base station is different from the second base station.

[0531] The first base station may be a base station after the terminal cell reselects or switches cells.

[0532] The first base station may be a current serving base station of the terminal.

[0533] In short, for the relevant description of the first base station, please refer to the embodiment shown in FIG2A .

[0534] For the description of step S3101 here, please refer to S2101 shown in Figure 2A.

[0535] S3102: Send the first message.

[0536] In some embodiments, the first base station sends the first message to the second base station.

[0537] In some embodiments, the first message is used to request configuration information related to the first task.

[0538] The configuration information related to the first task may include: task configuration information or connection configuration information.

[0539] In some embodiments, the second base station sends task configuration information or connection configuration information.

[0540] The sending method, message content, message format and other related contents of the first message here can be referred to the embodiment shown in Figure 2A, and are not limited to the implementation method corresponding to the embodiment of Figure 2A.

[0541] In one embodiment, after receiving the second information, the first base station sends a first message to the second base station.

[0542] The first message may be an air interface message, or may be any message forwarded to the second base station via other network nodes.

[0543] S3103: Receive the first information.

[0544] In some embodiments, the first base station receives the first information sent by the terminal.

[0545] In some embodiments, the first information is related to the first task.

[0546] In some embodiments, the first information may be an execution result of the first task.

[0547] In other embodiments, the first information may be any information of the first device collected during the execution of the first task.

[0548] In some embodiments, the first task includes:

[0549] The terminal sends a first signal to the first device;

[0550] The terminal receives first information from the first device.

[0551] The first information is information sent by the first device under the triggering or stimulation of the first signal.

[0552] That is, when the terminal executes the first task, it needs to send a first signal to the first device, and needs to receive the following information sent by the first device under the stimulation or triggering of the first signal.

[0553] The task information of the first task is distributed to the terminal by the second base station.

[0554] S3104: Receive configuration information related to the first task.

[0555] In some embodiments, the configuration information related to the first task may include: task configuration information and / or connection configuration information.

[0556] In some embodiments, the configuration information related to the first task is received from the second base station, that is, the configuration information related to the first task comes from the second base station.

[0557] In some embodiments, the description of the information content of the task configuration information and / or the connection configuration information can be found in the embodiment corresponding to FIG. 2A , which will not be repeated here.

[0558] S3105: Send first information according to configuration information related to the first task.

[0559] In some embodiments, the first information is sent to the second device through a first channel between the second device and the task configuration information.

[0560] In some embodiments, according to the task configuration information, the first information is sent to the core network device through the second channel between the core network device and the core network device, wherein after the first information reaches the core network device, it can be forwarded to the second device by the core network device.

[0561] In other embodiments, the first information is sent to the second base station based on the connection configuration information. After receiving the first information, the second base station sends the first information to the second device via a channel between the second base station and the second device. Alternatively, after receiving the first information, the second base station sends the first information to the core network device via a channel between the second base station and the core network device, and the core network device ultimately sends the second information to the second device.

[0562] For details on how S3105 sends the first information, please refer to S2105.

[0563] In some embodiments, the first information and the second information from the terminal may be carried in the same or different messages sent by the terminal.

[0564] In response to the first information and the second information being carried in different messages sent by the terminal, steps S3101 and S3104 are executed separately.

[0565] In response to the first information and the second information being carried in the same message sent by the terminal, steps S3101 and S3104 are performed together.

[0566] The message carrying the first information and the second information may be any AS message sent by the terminal.

[0567] It is worth noting that there is no fixed order for the steps shown in FIG3A , and not all steps are mandatory.

[0568] In some embodiments, the first base station may execute S3101 , S3102 , S3103 , S3104 , and S3105 sequentially.

[0569] In other embodiments, the first base station may execute S3101, S3104, S3102, S3103, and S3105 sequentially.

[0570] In other embodiments, the first base station may execute S3101, S3102, S3104, S3103, and S3105 sequentially.

[0571] In some embodiments, the first base station may execute S3101, S3102, and 3103 sequentially, that is, steps S3104 and S3105 are optional steps. For example, after the service base station of the terminal is changed to the second base station, the terminal may send the first information received from the first device to the first base station in real time. At this time, S3104 and S3105 may be steps that need to be executed. However, the terminal may cache the first information of the first device and send the first information to the first base station when no preset event is detected. In this way, when the first base station serves as the service base station of the terminal, the terminal does not send the first information to the first base station. The description of the preset event can be found in the embodiment shown in Figure 2A and will not be repeated here.

[0572] In other embodiments, the first base station may execute S3101, S3104, S3102, S3103, and S3105 sequentially.

[0573] In other embodiments, the first base station may execute S3101, S3102, S3104, S3103, and S3105 sequentially.

[0574] In other embodiments, the first base station may sequentially execute S3104 and S3105, meaning that steps S3101, S3102, and S3103 are optional. After receiving the first information, the first base station may directly forward the first information to the core network device, which then routes the first information to the second device based on the first information, the device identification of the first terminal as a reader, and / or the device identification of the first device. Alternatively, the first base station may obtain configuration information related to the first task from the core network device, eliminating the need to obtain configuration information related to the first task from the second base station. In some embodiments, S3102 may be optional, meaning that steps S3103, S3101, and S3105 may be executed directly. For example, if a terminal switches to the first base station through cell handover, the second base station may proactively send configuration information related to the first task to the first base station when performing the terminal's cell handover. In this way, even though the first base station is not currently serving as the terminal's serving base station, but merely serving as the terminal's target base station, it has already obtained configuration information related to the first task. Subsequently, when the first information and / or the second information is received, the first base station queries the pre-acquired configuration information related to the first task and sends the first information.

[0575] In the embodiment of the present disclosure, the first base station can assist the terminal in processing the first task assigned to the terminal by the second base station, thereby achieving smooth execution of the first task.

[0576] FIG3B is a schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a communication method for a first base station, the method comprising:

[0577] S3201: Receive configuration information related to the first task.

[0578] In some embodiments, the first base station receives configuration information related to the first task.

[0579] In one embodiment, the first base station, as a target base station for cell handover of a terminal, may receive a message related to cell handover, where the message may include configuration information related to the first task.

[0580] For the execution of S3201 , reference may be made to step S2201 in the corresponding embodiment of FIG. 2B .

[0581] For the configuration information related to the first task, please refer to the relevant parts of the corresponding embodiments of FIG. 2A and / or FIG. 2B .

[0582] S3202: Receive first information.

[0583] In some embodiments, the first base station receives first information sent by the terminal.

[0584] In some embodiments, the first base station receives an RRC message, a MAC layer message, or UCI, etc., sent by the terminal and containing the first message.

[0585] For a related description of the first information, please refer to any one of the embodiments shown in FIG. 2A and / or FIG. 2B .

[0586] S3203: Send the first message.

[0587] In some embodiments, the first base station sends the first information to the second base station, the core network device and / or the second device.

[0588] In some embodiments, the first base station sends the first information according to configuration information related to the first task.

[0589] The specific implementation of S3203 may refer to S2203 of the embodiment corresponding to FIG2B , or refer to S2105 of the embodiment shown in FIG2A .

[0590] It is worth noting that there is no fixed order for the steps shown in FIG3B , and not all steps are mandatory.

[0591] In some embodiments, the first base station may execute S3201, S3202 and S3103 sequentially.

[0592] In other embodiments, the first base station may perform S3201 alone, that is, steps S3202 and S3203 are not mandatory steps.

[0593] For example, after the terminal's serving base station is changed to a second base station, the terminal can send the first information received from the first device to the first base station in real time. In this case, S3201 may be a required step. However, the terminal can cache the first information from the first device and send the first information to the first base station when no preset event is detected. In this way, when the first base station serves as the terminal's serving base station, the terminal does not send the first information to the first base station.

[0594] In some other embodiments, the first base station performs steps S3202 and S3103. For example, after receiving the first information, the first base station directly sends the first information to the core network device. The core network device stores the task information of the first task. In this case, after receiving the first information, the core network sends it to the second device based on the task information. For example, when the first task is configured by the core network device, the core network device will store the task information of the first task. For another example, if the first task is configured by the second device, the first task configured by the second device will be published to the core network device. In this case, the core network device will also store the task information of the first task.

[0595] In some cases, the task information of the first task may be stored as the context of the terminal in the core network device. In this way, the first base station may not obtain the configuration information related to the first task from the second base station, but instead request the context containing the configuration information related to the first task from the core network device.

[0596] FIG4A is a schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG4A , the embodiment of the present disclosure relates to a communication method for a second base station, the method comprising:

[0597] S4101: Receive a first message, where the first message is used to request a second base station to send configuration information related to a first task.

[0598] In some embodiments, a first message sent by a second base station is received.

[0599] In some embodiments, the second base station is a base station that distributes (assigns) the first task to the terminal.

[0600] In some embodiments, the second base station may be one or more previous serving base stations of the terminal performing the first task.

[0601] In other embodiments, the second base station may be a terminal source base station.

[0602] The execution of S4101 may refer to S2102 of the embodiment shown in FIG. 2A .

[0603] The configuration information related to the first task here may include the task configuration information and / or connection configuration information provided by any one of the aforementioned embodiments.

[0604] S4102: Send configuration information related to the first task.

[0605] In some embodiments, configuration information related to the first task is sent to the first base station.

[0606] In some embodiments, the configuration information related to the first task is used by the first base station to send the first information;

[0607] In some embodiments, after receiving the first message, the second base station may send configuration information related to the first task to the first base station.

[0608] Exemplarily, according to the first task, the first device, or the terminal indicated by the second message, configuration information related to the first task to be sent to the first base station is determined, and the determined configuration information related to the first task is sent to the first base station.

[0609] For the specific implementation of this step, please refer to S2103 of the embodiment shown in FIG. 2A .

[0610] S4103: Receive the first information.

[0611] In some embodiments, in response to the configuration information related to the first task being connection configuration information, first information is received from the first base station. Exemplarily, the first information sent by the first base station is received using a GTP tunnel, an Xn interface, or an X2 interface between the first base station and the second base station. For example, an XnAP message containing the first information is received from the first base station over the Xn interface. Xn application protocol is an abbreviation for XnAP, which can be translated into "Xn Application Protocol" in Chinese.

[0612] S4104: Send the first message.

[0613] In some embodiments, the second base station directly sends the first information to the second device through a direct connection channel between the second base station and the second device.

[0614] In other embodiments, the second base station may send the first information to the core network device through a channel between the second base station and the core network device, and the first information is then forwarded to the second device by the core network device.

[0615] For details on how the second base station sends the first information, please refer to the relevant content of step 2105 shown in Figure 2A.

[0616] It is worth noting that there is no fixed order for the steps shown in FIG4A , and not all steps are mandatory.

[0617] In some embodiments, the second base station may execute S4101, S4102, S4103 and S4104 sequentially.

[0618] In other embodiments, the second base station may independently perform S4102, i.e., S4102, S4103, and S4104 are not mandatory steps. For example, if the second base station proactively sends configuration information related to the first task to the first base station, step S4101 may be omitted. Furthermore, even after the configuration information related to the first task is sent to the first base station, the first base station may not necessarily receive the first information reported by the terminal, so S4103 and S4104 may also be optional steps.

[0619] In some other embodiments, the second base station may execute S4102 and S4101 sequentially, that is, S4103 and S4104 are optional steps.

[0620] In some other embodiments, the second base station may sequentially perform S4103 and S4104, i.e., S4101 and S4102 are optional steps. For example, the first base station may obtain task information related to the first task from other devices such as the core network device or the second device, and the first base station may send the first information to the first base station according to the connection configuration information upon receiving the first information.

[0621] For example, after the terminal's serving base station is changed to a second base station, the terminal can send the first information received from the first device to the first base station in real time. However, the terminal can cache the first information from the first device and send the first information to the first base station when no preset event is detected. In this way, when the first base station is the terminal's serving base station, the terminal does not send the first information to the first base station. As a result, the second base station cannot receive the information sent by the first base station.

[0622] In some embodiments, before the second base station distributes the task information of the first task to the terminal, the second base station may obtain third information. The third information may be used by the second base station to select a terminal as a reader of the first device.

[0623] For relevant content of the third information, please refer to the embodiments shown in Figures 2A and / or 2B. The second base station can select a terminal that supports and / or agrees to serve as a reader for the first device to perform the first task. In some embodiments, the second base station can also select a terminal to serve as a reader for the first device based on the terminal's current load status, power level, temperature, and / or its own wireless task.

[0624] FIG4B is a schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG4B , the embodiment of the present disclosure relates to a communication method for a second base station, the method comprising:

[0625] S4202: Send configuration information related to the first task.

[0626] In some embodiments, configuration information related to the first task is sent to the first base station.

[0627] In some embodiments, a message related to cell handover is sent to the first base station, the message related to cell handover may include but is not limited to a cell handover request message, and the message related to cell handover includes the aforementioned configuration information related to the first task.

[0628] In some embodiments, the configuration information related to the first task is used by the first base station to send the first information;

[0629] In some embodiments, after receiving the first message, the second base station may send configuration information related to the first task to the first base station.

[0630] Exemplarily, according to the first task, the first device, or the terminal indicated by the second message, configuration information related to the first task to be sent to the first base station is determined, and the determined configuration information related to the first task is sent to the first base station.

[0631] For the specific implementation of this step, please refer to S2103 of the embodiment shown in FIG. 2A .

[0632] S4202: Receive first information.

[0633] In some embodiments, in response to the configuration information related to the first task being connection configuration information, first information is received from the first base station. Exemplarily, the first information sent by the first base station is received using a GTP tunnel, an Xn interface, or an X2 interface between the first base station and the second base station. For example, an XnAP message containing the first information is received from the first base station over the Xn interface. Xn application protocol is an abbreviation for XnAP, which can be translated into "Xn Application Protocol" in Chinese.

[0634] S4203: Send the first message.

[0635] In some embodiments, the second base station directly sends the first information to the second device through a direct connection channel between the second base station and the second device.

[0636] In other embodiments, the second base station may send the first information to the core network device through a channel between the second base station and the core network device, and the first information is then forwarded to the second device by the core network device.

[0637] For details on how the second base station sends the first information, please refer to the relevant content of step 2105 shown in Figure 2A.

[0638] It is worth noting that there is no fixed order for the steps shown in FIG4B , and not all steps are mandatory.

[0639] In some embodiments, the second base station may execute S4201, S4202 and S4103 sequentially.

[0640] In other embodiments, the second base station may independently perform S4101, meaning that S4202 and S4103 are not mandatory. For example, if the second base station proactively sends configuration information related to the first task to the first base station, step S4201 may be omitted. Furthermore, even after sending the configuration information related to the first task to the first base station, the first base station may not necessarily receive the first information reported by the terminal, so steps S4202 and S4103 may also be optional.

[0641] FIG5 is a schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG5 , the embodiment of the present disclosure relates to a communication method for a terminal in a non-connected state, the method comprising:

[0642] S5101: Send the first signal.

[0643] The unconnected state may include an idle state and / or an inactive state.

[0644] In some embodiments, the terminal in the non-connected state sends a first signal to the first device.

[0645] The first device may be any device that uses a backscatter transmission mechanism for wireless communication, such as the aforementioned environmental IoT device.

[0646] In some embodiments, the terminal in the non-connected state receives task information of the first task from the second base station and transmits a first signal according to the task information. The description of the first signal can be found in the embodiment corresponding to FIG2A and will not be repeated here.

[0647] S5102: Receive first information.

[0648] In some embodiments, a reflected signal is received by the first device based on signal energy of the first signal, where the reflected signal carries the first information.

[0649] The reception of the first information here can refer to the relevant description of the embodiment corresponding to Figure 2A, and no examples are given here.

[0650] S5103: Send the second information.

[0651] The terminal sends second information to the first base station.

[0652] In some embodiments, the terminal in the non-connected state sends the second information to the first base station when a preset event is detected.

[0653] In some embodiments, after receiving the first information, the non-connected terminal determines that no preset event is detected, and may cache the first information first, and then send the second information to the first base station after detecting the preset event.

[0654] In some embodiments, after the terminal cell in the non-connected state reselects to the first base station, the second information is sent through a message related to cell reselection, or after the terminal cell in the non-connected state reselects to the first base station, it enters the connected state and sends an RRC message, MAC layer message or UCI carrying the second information in the terminal connected state.

[0655] In some embodiments, the aforementioned second information may be carried in any one of Messages 1 to 5, which may be sent by the terminal to switch from a non-connected state to a connected state. That is, the first message may be any one of Messages 1, 3, and 5. Message 1 may include a random access preamble sent by the terminal. Message 2 may be a random access response sent by the base station. Message 4 may be an RRC connection establishment message.

[0656] Exemplarily, the message carrying the first information may be Msg3 and / or Msg5.

[0657] In some embodiments, the terminal is in an idle state, and the terminal sends the second information through an RRC Setup Request message or an RRC Setup Complete message for the idle state.

[0658] In some embodiments, the terminal is in an inactive state, and the terminal may send the second information via an RRC resume request (RRC Resume Request) message for the inactive state or an RRC resume complete (RRC Resume Complete) message for the inactive state.

[0659] The RRC establishment request message and the RRC recovery request message here can both be the aforementioned message three.

[0660] The RRC connection establishment complete message and the RRC connection recovery complete message here can both be the aforementioned message five.

[0661] S5104: Send the first message.

[0662] In some embodiments, the first information and the second information may be sent in the same message or in different messages.

[0663] If the first information and the second information are sent in the same message, the first information and the second information can be sent to the first base station via the aforementioned message 3 or message 5. For example, when the data volume of the first information is less than a specified threshold, the first information and the second information can be sent to the first base station using the same message.

[0664] If the first information and the second information are sent in different messages, the terminal may send the first information in an RRC message or a MAC layer message or UCI when entering the connected state.

[0665] In some embodiments, in response to the terminal exiting the non-connected state and then entering the connected state to send the first information, the terminal may request to enter the connected state.

[0666] When requesting to enter the connected state, the second information may further include at least one of the following information:

[0667] A first reason, indicating that the terminal requests the second information to be sent;

[0668] The second reason indicates that the terminal requests to establish an RRC signaling connection only;

[0669] The third reason indicates that the terminal moves and initiates data;

[0670] A first identifier, indicating that the terminal serves as an identifier of a first device reader;

[0671] A task identifier, indicating a collection task for obtaining the second information of the first device;

[0672] The second identifier indicates the first device.

[0673] The second information may be carried in message three (Msg3).

[0674] In some embodiments, the first reason may be equivalent to an explicit indication that the second information is to be sent. For example, the first reason may include a reason code, and a value of "1" in the bit corresponding to the reason code indicates that the terminal has requested the second information to be sent. If the second information does not include the reason code, or the value of the bit corresponding to the reason code is "0," the terminal may not have requested the second information to be sent.

[0675] In some embodiments, the terminal may default to sending the second cause because the second information triggers a preset event. The second cause indicates that the terminal requests to establish an RRC signaling-only connection.

[0676] In some embodiments, if the terminal desires to enter the connected state due to reasons such as the second information, other service data of the terminal itself, or the terminal receiving a system message update notification, a third reason is sent via the first information. The third reason may be used to request the establishment of an RRC connection, which may include but is not limited to a conventional RRC connection.

[0677] In some embodiments, the first identifier may include one or more parts. For example, the first identifier may include at least: a first part and a second part.

[0678] The first part may include but is not limited to one of the following:

[0679] cell identification;

[0680] Base station identification;

[0681] Cell group ID;

[0682] Tracking area identifier.

[0683] The second part may be the reader's serial number (SN) assigned by the network device.

[0684] In some embodiments, the first identifier may further include a third part. The third part may be determined according to a type and / or service type lower than the first device type agreed to or signed by the user of the terminal.

[0685] For example, the third part may include but is not limited to at least one of the following:

[0686] The first device may include a device type code;

[0687] The terminal can support the service code forwarded by the first device, etc.

[0688] The task identifier indicates the first task. Thus, the first information includes the task identifier. The network device can know from the task identifier that the reason for entering the connected state this time is to report the first information sent by the first device.

[0689] The second identifier may be the second identifier of the first device. The identifier of the first device may include one or more parts. For example, the second identifier of the first device may include a task identifier, an identifier of a cell that distributes the first task, and / or an identifier of a base station that distributes the first task.

[0690] After receiving the second information, the first base station may establish an RRC connection with the terminal through the interaction of message 4 and message 5. The RRC connection established here may include but is not limited to: a regular RRC connection or an RRC signaling only connection.

[0691] The RRC connection establishment includes: establishing a signaling bearer and / or a data bearer between the terminal and the first base station.

[0692] The establishment of a signaling bearer may include, but is not limited to, allocating a signaling radio bearer (SRB) to the terminal. The SRB may include SRB1 and / or SRB2. The SRB may be used for signaling transmission on the control plane. SRBs may also include SRB0. The SRB0 does not need to be established and can be used for signaling transmission on the Common Control Channel (CCCH). The signaling transmitted by the CCCH may include, but is not limited to, an RRC connection request message, an RRC connection rejection message, an RRC connection establishment message, an RRC connection reestablishment message, and / or an RRC connection reestablishment rejection message.

[0693] SRB1 can be used to transmit various RRC messages, including all RRC messages except CCCH transmission RRC signaling.

[0694] SRB2 can be used to establish reconfiguration messages. The priority of SRB2 is lower than that of SRB1. For example, SRB2 can be used to transmit Non-Access Stratum (NAS) messages.

[0695] Exemplarily, SRB0 may be used for signaling of various CCCH transmissions.

[0696] The establishment of a data bearer may include but is not limited to: allocating a Data Radio Bearer (DRB) to the terminal. The DRB may be used for data transmission on the data plane.

[0697] During the process of establishing an RRC connection, SRB1, SRB2 and / or DRB are configured for the terminal.

[0698] In some embodiments, the second information is sent based on a radio bearer allocated for the RRC connection during the RRC connection establishment process by the first base station.

[0699] The radio bearer includes but is not limited to a signaling radio bearer (SRB) and / or a data radio bearer (DRB).

[0700] In some embodiments, an RRC connection may include a regular RRC connection and an RRC signaling-only connection. The establishment of an RRC signaling-only connection involves only the establishment of SRB1 and AS security activation, without establishing SRB2 or DRBs. This means that an RRC signaling-only connection is a simplified RRC connection.

[0701] In some embodiments, if a conventional RRC connection is established between the terminal and the first base station, the RRC connection may need to establish not only an SRB but also a DRB. Therefore, in this case, the terminal may be configured with SRB1, SRB2 and / or DRB.

[0702] In some embodiments, if the second information cached in the terminal causes a preset event to be triggered, a request may be made to establish an RRC signaling connection only. In this case, the second information may include but is not limited to at least one of the following:

[0703] A first reason, indicating that the terminal requests the second information to be sent;

[0704] The second reason indicates that the terminal requests to establish an RRC signaling connection only;

[0705] A first identifier, indicating that the terminal serves as an identifier of a first device reader;

[0706] A task identifier, indicating a collection task for obtaining the second information of the first device;

[0707] The second identifier indicates the first device.

[0708] In other embodiments, when a preset event is triggered by the terminal's own service and / or system message update, the terminal may request to establish a regular RRC connection. In this case, the second information may include but is not limited to at least one of the following:

[0709] The third reason indicates that the terminal moves and initiates data;

[0710] The fourth reason indicates a request to obtain updated system information;

[0711] The fifth reason indicates a response to a paging message from a network device.

[0712] Of course, the above is merely an example of determining the type of RRC connection to be established based on the information content of the first information, and the specific implementation is not limited to this example.

[0713] In some embodiments, only an RRC signaling connection is established between the terminal and the access network device, and the terminal may be configured with SRB1.

[0714] In some embodiments, a conventional RRC connection is established between the terminal and the access network device. In this case, the terminal is configured with SRB1 and may also be configured with at least one of SRB2 and DRB.

[0715] In some embodiments, the second information sent based on the RRC connection carries a task identifier added by the first device; or, the second information sent based on the RRC connection carries a task identifier added by the terminal.

[0716] After establishing the RRC connection, the terminal sends the first information to the first base station through SRB1 connected only by RRC signaling; or, the terminal sends the first information through SRB1, SRB2 and / or DRB of a regular RRC connection.

[0717] It is worth noting that there is no fixed order for the steps shown in FIG5 , and not all steps are mandatory.

[0718] In some embodiments, the terminal may execute S5101, S5102, S5103 and S5104 sequentially.

[0719] In other embodiments, the terminal may perform S5103 independently, i.e., S5101, S5102, and S5103 are not mandatory steps. For example, the terminal may send second information to the first base station to inform the terminal that it has been configured with the first task. If the terminal has been configured with the first task but the time period for executing the first task has not yet arrived or the triggering condition for executing the first task has not yet been met, steps S5101, S5102, and S5104 may not be performed.

[0720] In some other embodiments, the terminal may execute S5101, S5102, and S5103. That is, S5104 is an optional step. For example, if the terminal has cached the first information but the preset event for reporting the first information has not yet been reached, the terminal does not need to execute S5104.

[0721] In order to quickly deploy the passive Internet of Things (IoT) at a low cost, a passive IoT data collection method using the base terminal (UE) as an anchor point is proposed. As a reader, the UE does not necessarily need to collect and report data in real time. Data can be cached on the UE side and then uniformly reported and routed after the UE enters the connected state. The UE does not need to maintain an RRC connection state for a small data packet, which can achieve the purpose of UE power saving. Therefore, the UE can act as a UE reader in either the RRC_IDLE / INACTIVE state or the RRC_CONNECTED state. The UE is mobile, and how to support ambient IoT service continuity during the UE reader's movement is a problem that needs to be solved.

[0722] Referring to FIG. 7A , solution 1: service continuity of RRC_IDLE / INACTIVE UE reader—task configuration information is not redirected (relocation).

[0723] When the RRC_IDLE / INACTIVE UE reader performs cell reselection from the base station that issued the task to another base station.

[0724] When the amount of data collected and / or stored by the RRC_IDLE / INACTIVE UE as a reader exceeds a certain threshold, such as m bytes, or when the task collected by the RRC_IDLE / INACTIVE UE as a reader has been completed, the RRC_IDLE / INACTIVE UE reader initiates the RRC connection establishment process. If the current serving base station is not the base station that obtained the task configuration information, the UE indicates to the target base station the ID of the base station that issued the task configuration information, and / or the task ID, and / or the UE reader ID, for example, in Msg5.

[0725] The target eNB receives the UE's indication message, addresses the source eNB, and notifies the target eNB of the following information, such as the task ID and / or UE reader ID. Optionally, it also carries an indication message instructing the source eNB to forward the task configuration information. The UE reader ID is the reader identifier assigned when a task is assigned or when a UE is configured as a reader. It uniquely identifies a UE as a reader and consists of two parts: information identifying the gNB and information identifying the UE. The task ID is the task identifier assigned when the UE is assigned an IoT task.

[0726] The target base station decides to forward the task configuration information, or the source base station decides to forward the task configuration information. It is assumed here that the task configuration information is not forwarded.

[0727] After receiving the request information of the forwarding task configuration information from the target base station, the source base station sends a response message, which carries a GTP tunnel ID or an XnAP ID. The GTP tunnel ID or the XnAP ID is associated with a task ID.

[0728] The target base station forwards the collected data reported by the UE to the source base station through the above tunnel. The source base station identifies the routing and forwarding information of the collected data on the access network side based on the task ID, that is, the GTP tunnel, or XnAP connection information, or NGAP connection information, or IP address, etc.

[0729] As shown in FIG7B , solution 2: service continuity of RRC_IDLE / INACTIVE UE reader—relocation of task configuration information.

[0730] When an inactive (RRC_IDLE / INACTIVE) UE reader performs cell reselection from the base station that issued the task to another base station, when the data collected and / or stored by the RRC_IDLE / INACTIVE UE as a reader exceeds a certain threshold, such as m bytes, or when the task collected by the RRC_IDLE / INACTIVE UE as a reader has been completed, the RRC_IDLE / INACTIVE UE reader initiates the RRC connection establishment process. If the current serving base station is not the base station that obtained the task configuration information, the UE indicates the target base station the identifier of the base station that issued the task configuration information, and / or the task ID, and / or the UE reader ID, for example, in Msg5.

[0731] The target eNB receives the UE's indication message, addresses the source eNB, and notifies the target eNB of the following information, such as the task ID and / or UE reader ID. Optionally, it also carries an indication message instructing the source eNB to forward the task configuration information. The UE reader ID is the reader identifier assigned when a task is assigned or when a UE is configured as a reader. It uniquely identifies a UE as a reader and consists of two parts: information identifying the gNB and information identifying the UE. The task ID is the task identifier assigned when the UE is assigned an IoT task.

[0732] The target base station determines the forwarding task configuration information, or the source base station determines the forwarding task configuration information. Here, it is assumed that the forwarding task configuration information.

[0733] The configuration information of the ambient IoT task can include, but is not limited to, at least one of the following:

[0734] Task ID of the ambient IoT task;

[0735] Ambient IoT task start time and / or end time;

[0736] The target ambient IoT identification information of the ambient IoT task;

[0737] Indication that ambient IoT tasks can be executed in RRC_IDLE / INACTIVE.

[0738] Data reporting corresponding to ambient IoT tasks, delay-insensitive indication information, etc.

[0739] The ambient IoT task sends corresponding cell information, such as cell ID information, frequency information or spectrum range information, channel information, sub-channel configuration information, etc.

[0740] After receiving the request information of the forwarding task configuration information from the target base station, the source base station sends a response message, which carries the configuration information related to the task.

[0741] After the target base station receives the task configuration information, it identifies the routing and forwarding information of the collected data on the access network side according to the task ID, that is, the GTP tunnel, or XnAP connection information, or NGAP connection information, or IP address, etc., and routes and forwards the collected data reported by the UE to the upstream node.

[0742] Solution 3: Service continuity for RRC_CONNECTED UE reader:

[0743] Option 1: Before receiving the handover command, the source eNB notifies the target eNB of the task configuration information, such as in the HANDOVER REQUEST message. After receiving the collected data reported by the UE, the target eNB routes and forwards the collected data to the upstream node based on the task configuration information, such as the GTP tunnel, XnAP connection information, NGAP connection information, or IP address.

[0744] Option 2: RC_CONNECTED: Before receiving the handover command, the source eNB decides not to forward the task configuration information. Instead, the source eNB notifies the target eNB of the tunnel identifier (GTP tunnel ID or XnAP connection identifier) ​​for routing UE-reported data from the target eNB, for example, in the HANDOVER REQUEST message. Upon receiving the collected data reported by the UE, the target eNB forwards the collected data to the source eNB according to the routing configuration provided by the source eNB.

[0745] The disclosed embodiments propose how to ensure service continuity during the mobility of an RRC_IDLE / INCTIVE / CONNECTED UE as a UE reader, thereby enabling rapid and low-cost deployment of a passive Internet of Things while achieving UE power saving.

[0746] The embodiments of the present disclosure also 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 or a core network device) in any of the above methods.

[0747] It should be understood that the division of the various units or modules in the above devices 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 devices, 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 a 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 implemented in the form of software called by the processor, or in the form of hardware circuits, or in part by software called by the processor, and the rest by hardware circuits.

[0748] In the embodiments of the present disclosure, a 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 a 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 to implement 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.

[0749] Figure 6A is a schematic diagram of the structure of a first base station provided in an embodiment of the present disclosure. As shown in Figure 6A, the first base station provided in an embodiment of the present disclosure includes: a transceiver module 601 configured to receive first information sent by a terminal; wherein the first information is related to a first task; the first task is for the terminal to send a first signal to a first device, and the terminal to receive first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

[0750] Optionally, the receiving module 601 may be configured to execute the steps related to information reception performed by the terminal in any of the above communication methods, which are not described in detail here. The above sending module is configured to execute the steps related to sending performed by the terminal in any of the above communication methods performed by the first base station, which are not described in detail here.

[0751] In some embodiments, the first base station further includes one or more processing modules, which can be used to perform information processing.

[0752] FIG6B is a schematic diagram of the structure of the second base station provided in an embodiment of the present disclosure. As shown in FIG6B , the second base station provided in an embodiment of the present disclosure includes:

[0753] The transceiver module 602 is configured to send configuration information related to the first task to the first base station; wherein the configuration information related to the first task is used to instruct the first base station to send the first information; the first information is related to the first task; the first task is used for the terminal to send a first signal to the first device, and the terminal receives the first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

[0754] Optionally, the receiving module 602 is configured to execute the steps related to information reception performed by the terminal in any of the above communication methods of the second base station, which will not be described in detail here.

[0755] In some embodiments, the second base station further includes one or more processing modules, which can be used to perform information processing.

[0756] Figure 6C is a schematic diagram of the structure of a terminal provided by an embodiment of the present disclosure. As shown in Figure 6C, the terminal provided by an embodiment of the present disclosure includes: a transceiver module 603 configured to send second information to a first base station, wherein the second information is used to indicate that the first device has the first task; the first task is used for the terminal to send a first signal to the first device, and the terminal to receive first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

[0757] The sending module 603 is used to execute the steps related to information sending performed by the terminal in any of the above communication methods, which will not be repeated here.

[0758] Figure 8A is a schematic diagram of the structure of a communication device 8100 provided in an embodiment of the present disclosure. The communication device 8100 can be a terminal and a network device (e.g., an access network device or a core network device), or a terminal (e.g., a user equipment (UE)), or a chip, chip system, or processor that supports a network device to implement any of the above methods, or a chip, chip system, or processor that supports a terminal to implement any of the above communication methods. The communication device 8100 can be used to implement the communication method described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0759] As shown in Figure 8A, 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, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The processor 8101 is used to call instructions to enable the communication device 8100 to perform any of the above communication methods.

[0760] 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.

[0761] 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 communication steps such as sending and receiving in the above method are performed by the transceiver 8103, and the other steps are performed by the processor 8101.

[0762] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0763] Optionally, the communication device 8100 further includes one or more interface circuits 8104, which are connected to the memory 8102. The interface circuits 8104 can be used to receive signals from the memory 8102 or other devices, and can be used to send signals to the memory 8102 or other devices. For example, the interface circuits 8104 can read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0764] 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. 8A. 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.

[0765] FIG8B is a schematic diagram of the structure of a chip 8200 provided 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 FIG8B , but the present disclosure is not limited thereto.

[0766] The chip 8200 includes one or more processors 8201 , and the processor 8201 is used to call instructions so that the chip 8200 executes any of the above communication methods.

[0767] In some embodiments, chip 8200 further includes one or more interface circuits 8202, which are connected to memory 8203. Interface circuit 8202 can be used to receive signals from memory 8203 or other devices, and can be used to send signals to memory 8203 or other devices. For example, interface circuit 8202 can read instructions stored in memory 8203 and send the instructions to processor 8201. Optionally, the terms interface circuit, interface, transceiver pin, and transceiver are interchangeable.

[0768] 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.

[0769] The present disclosure also provides 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 may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but may also be a transient storage medium.

[0770] The present disclosure further provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above communication methods. Optionally, the program product is a computer program product.

[0771] The present disclosure also provides a computer program, which, when executed on a computer, enables the computer to execute any one of the above communication methods.

[0772] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered as exemplary only, with the true scope and spirit of the present invention being indicated by the following claims.

[0773] It should be understood that the embodiments of the present disclosure are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the embodiments of the present disclosure is limited only by the appended claims.

Claims

1. A communication method, wherein: The method comprises: The first base station receives first information sent by the terminal; wherein the first information is related to a first task; the first task is used for the terminal to send a first signal to a first device, and the terminal receives first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

2. The method according to claim 1, wherein: The method comprises: receiving second information sent by the terminal, wherein the second information is used to indicate that the first device has the first task; A first message is sent to a second base station, wherein the first message is used to request the second base station to send configuration information related to the first task.

3. The method according to claim 1 or 2, wherein: The method further includes: receiving a message related to cell switching from the second base station; The cell switching-related message includes configuration information related to the first task; the configuration information related to the first task is used to instruct the first base station to send the first information.

4. The method according to claim 2 or 3, wherein: The configuration information related to the first task includes: Task configuration information, used to instruct the first base station to send the first information to a core network device or a second device; or, The connection configuration information is used to instruct the first base station to send the first information to the second base station.

5. The method according to claim 4, wherein: The task configuration information includes: first configuration information, used to indicate a first channel, wherein the first channel is used by the first base station to send the first information to the second device; or, The second configuration information is used to indicate a second channel, wherein the second channel is used by the first base station to send the first information to the core network device.

6. The method according to claim 4 or 5, wherein: The connection configuration information includes: Tunnel information, used to indicate a tunnel between the first base station and the second base station; or, The connection information is used to indicate the air interface connection between the first base station and the second base station.

7. The method according to any one of claims 1 to 6, wherein: The second message carrying the first information includes at least one of the following: A request message for establishing a radio resource control (RRC) in an idle state; RRC recovery request message for inactive state; RRC connection establishment completion message for idle state; RRC connection recovery complete message for inactive state.

8. The method according to claim 2, wherein: The second information includes at least one of the following: a base station identifier of the second base station; a cell identifier associated with the second base station; a task identifier of the first task; The terminal serves as a device identification of a reader, and the reader is used to send the first signal to the first device and receive the first information triggered by the first device to be sent based on the first signal; A device identifier of the first device.

9. The method according to claim 8, wherein: The device identification of the reader includes a first part, and the first part includes at least one of the following: A base station identifier, indicating the base station that issues the first task; A cell identifier, indicating the cell where the first task is issued; 10. The method according to claim 9, wherein the device identification of the reader further comprises a second part, wherein the second part comprises at least one of the following: a sequence code indicating the order of the terminal as the reader; Random numbers; The type code of the terminal; a task identifier of the first task; The business code of the first task.

11. A communication method, wherein: include: The second base station sends configuration information related to the first task to the first base station; wherein the configuration information related to the first task is used to instruct the first base station to send the first information; The first information is related to a first task; the first task is used for the terminal to send a first signal to a first device, and the terminal receives first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

12. The method according to claim 11, wherein: The information related to the first task includes: Task configuration information, used to instruct the first base station to send the first information to a core network device or a second device; or, The connection configuration information is used to instruct the first base station to send the first information to the second base station.

13. The method according to claim 11 or 12, wherein: The method further comprises: A first message sent by the second base station is received, wherein the first message is used to request the second base station to send configuration information related to the first task.

14. The method according to claim 12, wherein: The task configuration information includes: first configuration information, used to indicate a first channel, wherein the first channel is used by the first base station to send the first information to the second device; or, The second configuration information is used to indicate a second channel, wherein the second channel is used by the first base station to send the first information to the core network device.

15. The method according to claim 12, wherein: The connection configuration information includes: Tunnel information, used to indicate a tunnel between the first base station and the second base station; or, The connection information is used to indicate the air interface connection between the first base station and the second base station.

16. The method according to any one of claims 11 to 15, wherein: The method further includes: receiving the first information from the first base station according to the connection configuration information; According to the task configuration information, the first information is sent to the core network device or the second device.

17. A communication method, the method comprising: The terminal sends second information to the first base station, wherein the second information is used to indicate that the first device has a first task; the first task is used for the terminal to send a first signal to the first device, and the terminal receives first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

18. The method according to claim 17, wherein: The second information includes at least one of the following: A base station identifier of the second base station; a cell identifier of the second base station; a task identifier of the first task; The terminal serves as a device identification of a reader, and the reader is used to send the first signal to the first device and receive the first information triggered by the first device to be sent based on the first signal; A device identifier of the first device.

19. The method according to claim 17, wherein: The second message carrying the second information includes at least one of the following: A request message for establishing a radio resource control (RRC) in an idle state; RRC recovery request message for inactive state; RRC connection establishment completion message for idle state; RRC connection recovery complete message for inactive state.

20. The method according to any one of claims 17 to 19, wherein: The method comprises: Establishing an RRC connection with the first base station; The first information is sent to the first base station based on the RRC connection.

21. The method according to any one of claims 20, wherein: The sending the second message to the first base station includes: A preset event is detected, and a second message is sent to the first base station.

22. The method according to claim 21, wherein: The preset event includes at least one of the following: The terminal completes a first task of collecting first information; The cache amount of the first information reaches a first threshold; The current time reaches the reporting time configured for the first information; The cache duration of the first information reaches a first duration; The remaining cache space of the terminal is less than a preset value; The terminal receives the first delay-sensitive information; The terminal has service data to be sent; The terminal detects that an updated system message is to be received.

23. The method according to any one of claims 17 to 22, wherein: The method further comprises: Establish an RRC connection with the access network device; The first information is sent based on the RRC connection.

24. The method according to claim 23, wherein: The establishing of an RRC connection with the access network device comprises: Establishing an RRC signaling connection with the access device; Wherein, when the RRC signaling connection is established, a signaling radio bearer SRB1 is established with the terminal.

25. The method according to claim 24, wherein: The terminal is established with SRB, SRB2 and / or data radio bearer DRB.

26. A first base station, comprising: A transceiver module is configured to receive first information sent by a terminal; wherein the first information is related to a first task; the first task is used for the terminal to send a first signal to a first device, and the terminal receives first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

27. A second base station, wherein: include: A transceiver module is configured to send configuration information related to a first task to a first base station; wherein the configuration information related to the first task is used to instruct the first base station to send first information; the first information is related to the first task; the first task is used for the terminal to send a first signal to a first device, and the terminal receives first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

28. A terminal, comprising: The transceiver module is configured for the terminal to send second information to the first base station, wherein the second information is used to indicate that the first device has a first task; the first task is used for the terminal to send a first signal to the first device, and the terminal receives first information from the first device; the first information is returned to the terminal by the first device based on the first signal.

29. A communication system, wherein: The communication system includes a terminal, a first base station and a second base station; The first base station is configured to implement the communication method according to any one of claims 1 to 10, The second base station is configured to implement the communication method according to any one of claims 11 to 16, The terminal is configured to implement the communication method according to any one of claims 17 to 25.

30. A communication device, wherein: The communication device comprises: one or more processors; The processor is used to call instructions so that the communication device executes the communication method according to any one of claims 1 to 10, claims 11 to 16, and claims 17 to 25.

31. 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 10, claims 11 to 16, and claims 17 to 25.

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