Information receiving method, information sending method, terminal, apparatus, system and storage medium

Abstract

The present disclosure relates to an information receiving method, an information sending method, a terminal, an apparatus, a system and a storage medium. The method comprises: a terminal receives first information sent by network devices, wherein the first information comprises network access information of the network devices, and the terminal is an Internet of Things terminal that obtains energy from the environment. In the method of the present disclosure, the terminal obtains the network access information of the network devices on the basis of the first information, and when the coverage areas of the plurality of network devices overlap, on the basis of the network access information of the different network devices, a suitable network device is selected for access, thereby keeping good communication quality.

Description

Method, terminal, device, system and storage medium for receiving and sending information Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a method, terminal, device, system, and storage medium for receiving and sending information. Background Art

[0002] The Ambient Internet of Things (Ambient-IoT) is a type of IoT. Compared to cellular-based Narrowband Internet of Things (NB-IoT) terminals, Ambient-IoT terminals are less complex, less expensive, and require less maintenance. Ambient-IoT terminals require energy from the external environment, such as through excitation and power from received electromagnetic signals or by harvesting external heat, kinetic energy, and other methods. Therefore, Ambient-IoT terminals are also called environmentally powered terminals or passive terminals.

[0003] Summary of the Invention

[0004] In an Ambient-IoT communication system, the coverage areas of multiple network devices may overlap.

[0005] Embodiments of the present disclosure provide a method, terminal, device, system, and storage medium for receiving and sending information.

[0006] In a first aspect, an embodiment of the present disclosure provides a method for receiving information, the method comprising:

[0007] The terminal receives first information sent by a network device, where the first information includes network access information of the network device. The terminal is an Internet of Things terminal that obtains energy from the environment.

[0008] In a second aspect, an embodiment of the present disclosure provides a method for sending information, the method comprising:

[0009] The network device sends first information to the terminal, where the first information includes network access information of the network device, and the terminal is an Internet of Things terminal that obtains energy from the environment.

[0010] In a third aspect, an embodiment of the present disclosure provides a terminal, including:

[0011] The transceiver module is used to receive first information sent by a network device, where the first information includes network access information of the network device, and the terminal is an Internet of Things terminal that obtains energy from the environment.

[0012] In a fourth aspect, an embodiment of the present disclosure provides a network device, including:

[0013] The transceiver module is used to send first information to the terminal, where the first information includes network access information of the network device, and the terminal is an Internet of Things terminal that obtains energy from the environment.

[0014] In a fifth aspect, an embodiment of the present disclosure provides a communication device, including:

[0015] one or more processors;

[0016] The communication device is used to execute the method described in the first aspect or the second aspect.

[0017] In a sixth aspect, an embodiment of the present disclosure provides a communication system, including a terminal and a network device, wherein:

[0018] The terminal is configured to implement the method according to the first aspect;

[0019] The network device is configured to implement the method described in the second aspect.

[0020] In a seventh aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, wherein:

[0021] When the instructions are executed on a communication device, the communication device is caused to execute the method according to the first aspect, the second aspect, the third aspect or the fourth aspect.

[0022] In the embodiment of the present disclosure, the terminal obtains the network access information of the network device according to the first information, so that when the coverage areas of multiple network devices overlap, the terminal can select a suitable network device for access according to the network access information of different network devices, thereby maintaining good communication quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0024] FIG1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure;

[0025] 2a to 2c are exemplary interaction diagrams of a method provided according to an embodiment of the present disclosure;

[0026] 3a to 3d are exemplary flowcharts of a method according to an embodiment of the present disclosure;

[0027] 4a to 4d are exemplary flowcharts of a method according to an embodiment of the present disclosure;

[0028] FIG5a is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

[0029] FIG5b is a schematic structural diagram of a node device according to an embodiment of the present disclosure;

[0030] FIG6a is a schematic diagram of a communication device according to an embodiment of the present disclosure;

[0031] FIG6 b is a schematic diagram of a communication device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] Embodiments of the present disclosure provide a method, terminal, device, system, and storage medium for receiving and sending information.

[0033] In a first aspect, an embodiment of the present disclosure provides a method for receiving information, the method comprising:

[0034] A terminal receives first information sent by a network device, where the first information includes network access information of the network device. The terminal is an Ambient-IoT terminal that obtains energy from the environment.

[0035] In the above embodiment, the terminal receives the first information sent by the network device, and thereby obtains the network access information of the network device based on the first information, so that when the coverage areas of multiple network devices overlap, the terminal can select an appropriate network device for access based on the network access information of different network devices. In conjunction with the embodiment of the first aspect, in some embodiments, the network access information includes at least one of the following:

[0036] The load of the network device at the operating frequency of the terminal;

[0037] Whether the network device is configured with a separate continuous electromagnetic wave node CWN at the operating frequency point;

[0038] Whether the network device is configured with an energy source node ESN controlled by the network device at the operating frequency point;

[0039] The bandwidth configuration information of the network device at the working frequency point includes the bandwidth and / or the number of sub-channels allocated based on the bandwidth, wherein the bandwidth is the uplink working bandwidth of the terminal or the downlink working bandwidth of the network device.

[0040] In the above embodiment, the terminal can receive network access information of different network devices, so as to obtain the network access information of each network device and select a suitable network device for access according to the network access information of each network device.

[0041] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0042] The terminal receives second information sent by the network device, where the second information includes a cell identifier of the network device.

[0043] In the above embodiment, when the terminal receives the second information of multiple network devices, the terminal can select a network device that meets the first condition among the multiple network devices for access, thereby ensuring that the terminal can effectively communicate with the network when there is coverage overlap between the multiple network devices.

[0044] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0045] The terminal establishes a connection with the network device, and the network device meets a first condition.

[0046] In combination with the embodiment of the first aspect, in some embodiments, the second information is the first second information received by the terminal in the time domain.

[0047] In conjunction with the embodiments of the first aspect, in some embodiments, the receiving location of the second information is within a monitoring duration, and the monitoring duration satisfies one of the following conditions:

[0048] Greater than or equal to the maximum value of multiple second information sending cycles defined by the protocol;

[0049] Greater than or equal to the second information sending period of at least one network device.

[0050] In the above embodiments, the terminal may select a network device to access in different ways to improve the efficiency or quality of the selection, so that the terminal can select a better network device for access.

[0051] In the above embodiment, the monitoring duration of the terminal in the process of selecting the first network device may be greater than the sending period of the second information, so that the terminal can receive enough second information of network devices and facilitate screening of qualified network devices.

[0052] In conjunction with the embodiments of the first aspect, in some embodiments, the first condition includes at least one of the following:

[0053] The signal reception quality of the second information is higher than a first threshold;

[0054] The load of the network device at the operating frequency of the terminal is lower than a second threshold;

[0055] The network device sets a separate CWN at the operating frequency point;

[0056] The network device sets an ESN controlled by the first network device at the operating frequency point;

[0057] The bandwidth of the network device at the operating frequency point is greater than a third threshold;

[0058] The number of sub-channels of the network device at the operating frequency point is greater than a fourth threshold.

[0059] In the above embodiment, the content of the first condition is illustrated so that the terminal can determine the most suitable network device to ensure the communication effect.

[0060] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0061] The terminal performs network device switching when determining that the second condition is satisfied.

[0062] In the above embodiment, after the terminal establishes a connection with the network device, it can promptly initiate network device reselection and switching when it is determined that the second condition is met, so as to ensure the quality of communication.

[0063] In conjunction with the embodiments of the first aspect, in some embodiments, the second condition includes at least one of the following:

[0064] The load of the network device at the operating frequency of the terminal is higher than a second threshold;

[0065] The load of the network device at the operating frequency of the terminal is higher than the load of the network device to be switched;

[0066] The signal reception quality of the second information is lower than a first threshold;

[0067] The signal reception quality of the second information is lower than the signal reception quality of the second information sent by the network device to be switched;

[0068] The terminal receives third information sent by the network device, where the third information is used to instruct the terminal to reselect the network device.

[0069] In the above embodiment, an example of the second condition is illustrated. The terminal can actively determine whether reselection is required based on the relevant conditions, or can perform reselection under the instruction of the network device to timely adjust the communication connection status.

[0070] In combination with the embodiment of the first aspect, in some embodiments, the third information includes an identifier of at least one network device to be reselected.

[0071] In the above embodiment, when the terminal performs reselection based on the instruction of the network device, the network device may indicate the corresponding network device identifier to facilitate the terminal to selectively perform reselection.

[0072] In combination with the embodiments of the first aspect, in some embodiments, the terminal determines the identifier corresponding to the network device after switching in the at least one identifier to be reselected in descending order of priority of the identifiers.

[0073] In the above embodiment, the terminal can determine whether each related network device meets the second condition in sequence according to the priority of the cell identifier, so as to select the second network device with a higher priority and ensure communication quality.

[0074] In combination with the embodiments of the first aspect, in some embodiments, when it is determined that the terminal has not searched for the at least one network device to be reselected, the terminal searches for a network device to be switched other than the at least one network device to be reselected.

[0075] In the above embodiment, if none of the network devices indicated by the network device are found during the search, the terminal can determine a suitable network device on its own for switching.

[0076] In conjunction with the embodiments of the first aspect, in some embodiments, the terminal receiving the first information sent by the network device includes:

[0077] The terminal receives first information sent by a network device at each of the one or more supported working frequencies.

[0078] In the above embodiment, the terminal can receive the first information of different network devices at the supported working frequency points respectively, so as to facilitate the screening of the first network device or the second network device suitable for the different working frequency points according to the network access of the network device at the different working frequency points, thereby ensuring the communication quality at the working frequency point.

[0079] In combination with the embodiments of the first aspect, in some embodiments, the terminal receives the first information in descending order of working frequency priority.

[0080] In the above embodiment, the terminal may preferentially determine the first network device at the working frequency with a high priority according to the priority order of the working frequencies, thereby ensuring the communication quality at the working frequency with a high priority.

[0081] In a second aspect, an embodiment of the present disclosure provides a method for receiving information, the method comprising:

[0082] The terminal receives first information sent by a relay device, where the first information includes access information of the relay device. The terminal is an Internet of Things terminal that obtains energy from the environment.

[0083] In conjunction with the embodiments of the second aspect, in some embodiments, the access information includes at least one of the following:

[0084] The load of the relay device at the operating frequency of the terminal;

[0085] Whether the relay device is configured with a separate CWN at the operating frequency;

[0086] Whether the relay device sets an ESN on the operating frequency, and the ESN is controlled by the relay device or a network device to which the relay device is connected;

[0087] The bandwidth configuration information of the relay device at the working frequency point includes the bandwidth and / or the number of sub-channels allocated based on the bandwidth, wherein the bandwidth is the working bandwidth of the terminal or the relay device.

[0088] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0089] The terminal receives second information sent by the relay device, where the second information includes a device identifier of the relay device.

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

[0091] The terminal establishes a connection with the relay device, and the relay device meets a first condition.

[0092] In combination with the embodiments of the second aspect, in some embodiments, the second information is the first second information received by the terminal in the time domain.

[0093] In conjunction with the embodiments of the second aspect, in some embodiments, the receiving location of the second information is within a monitoring duration, and the monitoring duration satisfies one of the following conditions:

[0094] Greater than or equal to the maximum value of multiple second information sending cycles defined by the protocol;

[0095] Greater than or equal to the second information sending period of at least one relay device.

[0096] In conjunction with the embodiments of the second aspect, in some embodiments, the first condition includes at least one of the following:

[0097] The signal reception quality of the second information is higher than a first threshold;

[0098] The load of the relay device at the terminal operating frequency is lower than a second threshold;

[0099] The relay device sets a separate CWN at the working frequency point;

[0100] The relay device sets an ESN on the working frequency point, and the ESN is controlled by the relay device or a network device to which the relay device is connected;

[0101] The bandwidth of the relay device at the operating frequency point is greater than a third threshold;

[0102] The number of sub-channels of the relay device at the operating frequency point is greater than a fourth threshold.

[0103] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0104] The terminal performs relay device switching when determining that the second condition is satisfied.

[0105] In conjunction with the embodiments of the second aspect, in some embodiments, the second condition includes at least one of the following:

[0106] The load of the relay device at the operating frequency of the terminal is higher than a second threshold;

[0107] The load of the relay device at the operating frequency of the terminal is higher than the load of the relay device to be switched;

[0108] The signal reception quality of the second information is lower than a first threshold;

[0109] The signal reception quality of the second information is lower than the signal reception quality of the second information sent by the relay device to be switched;

[0110] The terminal receives third information about the relay device, where the third information is used to instruct the terminal to reselect the relay device.

[0111] In combination with the embodiments of the second aspect, in some embodiments, the third information includes an identifier of at least one relay device to be reselected.

[0112] In combination with the embodiments of the second aspect, in some embodiments, the terminal determines the identifier corresponding to the relay device after switching in the at least one identifier to be reselected in descending order of the identifier priority.

[0113] In combination with the embodiments of the second aspect, in some embodiments, when it is determined that the terminal has not searched for the at least one relay device to be reselected, the terminal searches for a relay device to be switched other than the at least one device to be reselected.

[0114] In conjunction with the embodiments of the second aspect, in some embodiments, the terminal receiving the first information sent by the relay device includes:

[0115] The terminal receives first information sent by the relay device at each of the one or more supported working frequencies.

[0116] In combination with the embodiments of the second aspect, in some embodiments, the terminal receives the first information in descending order of working frequency priority.

[0117] In a third aspect, an embodiment of the present disclosure provides a method for sending information, the method comprising:

[0118] The network device sends first information to the terminal, where the first information includes network access information of the network device, and the terminal is an Internet of Things terminal that obtains energy from the environment.

[0119] In the above embodiment, the network device may send the first information to the terminal, so that the terminal can select a suitable network device for access according to the network access information of the network device.

[0120] In conjunction with the embodiments of the third aspect, in some embodiments, the network access information includes at least one of the following:

[0121] The load of the network device at the operating frequency of the terminal;

[0122] Whether the network device is configured with a separate CWN at the operating frequency;

[0123] Whether the network device is set at the operating frequency point with an ESN controlled by the network device;

[0124] The bandwidth configuration information of the network device at the working frequency point includes the bandwidth and / or the number of sub-channels allocated based on the bandwidth, wherein the bandwidth is the uplink working bandwidth of the terminal or the downlink working bandwidth of the network device.

[0125] In conjunction with the embodiments of the third aspect, in some embodiments, the method further includes:

[0126] The network device sends second information to the terminal, where the second information includes a cell identifier of the network device.

[0127] In conjunction with the embodiments of the third aspect, in some embodiments, the method further includes:

[0128] The network device establishes a connection with the terminal, and the network device meets a first condition.

[0129] In conjunction with the embodiments of the third aspect, in some embodiments, the first condition includes at least one of the following:

[0130] The signal reception quality of the second information is higher than a first threshold;

[0131] The load of the network device at the operating frequency of the terminal is lower than a second threshold;

[0132] The network device sets a separate CWN at the operating frequency point;

[0133] The network device sets an ESN controlled by the first network device at the operating frequency point;

[0134] The bandwidth of the network device at the operating frequency point is greater than a third threshold;

[0135] The number of sub-channels of the network device at the operating frequency point is greater than a fourth threshold.

[0136] In conjunction with the embodiments of the third aspect, in some embodiments, the method further includes:

[0137] The network device sends third information to the terminal, where the third information is used to instruct the terminal to reselect a network device.

[0138] In combination with the embodiments of the third aspect, in some embodiments, the third information includes an identifier of at least one network device to be reselected.

[0139] In conjunction with the embodiments of the third aspect, in some embodiments, the network device sending the first information to the terminal includes:

[0140] At each of one or more working frequencies supported by the terminal, the network device sends first information to the terminal.

[0141] In a fourth aspect, an embodiment of the present disclosure provides a method for sending information, the method comprising:

[0142] The relay device sends first information to the terminal, where the first information includes access information of the relay device, and the terminal is an Internet of Things terminal that obtains energy from the environment.

[0143] In conjunction with the embodiments of the fourth aspect, in some embodiments, the access information includes at least one of the following:

[0144] The load of the relay device at the operating frequency of the terminal;

[0145] Whether the relay device is configured with a separate CWN at the operating frequency;

[0146] Whether the relay device sets an ESN on the operating frequency, and the ESN is controlled by the relay device or a network device to which the relay device is connected;

[0147] The bandwidth configuration information of the relay device at the working frequency point includes the bandwidth and / or the number of sub-channels allocated based on the bandwidth, wherein the bandwidth is the working bandwidth of the terminal or the relay device.

[0148] In conjunction with the embodiments of the fourth aspect, in some embodiments, the method further includes:

[0149] The relay device sends second information to the terminal, where the second information includes a device identifier of the relay device.

[0150] In conjunction with the embodiments of the fourth aspect, in some embodiments, the method further includes:

[0151] The relay device establishes a connection with the terminal, and the relay device meets a first condition.

[0152] In conjunction with the embodiments of the fourth aspect, in some embodiments, the first condition includes at least one of the following:

[0153] The signal reception quality of the second information is higher than a first threshold;

[0154] The load of the relay device at the terminal operating frequency is lower than a second threshold;

[0155] The relay device sets a separate CWN at the working frequency point;

[0156] The relay device sets an ESN on the working frequency point, and the ESN is controlled by the first relay device or a network device to which the first relay device is connected;

[0157] The bandwidth of the relay device at the operating frequency point is greater than a third threshold;

[0158] The number of sub-channels of the relay device at the operating frequency point is greater than a fourth threshold.

[0159] In conjunction with the embodiments of the fourth aspect, in some embodiments, the method further includes:

[0160] The relay device sends third information to the terminal, where the third information is used to instruct the terminal to reselect the relay device.

[0161] In combination with the embodiments of the fourth aspect, in some embodiments, the third information includes an identifier of at least one relay device to be reselected.

[0162] In conjunction with the embodiments of the fourth aspect, in some embodiments, the relay device sending the first information to the terminal includes:

[0163] The relay device sends first information to the terminal at each of the one or more working frequencies supported by the terminal.

[0164] In a fifth aspect, an embodiment of the present disclosure provides a terminal, including:

[0165] The transceiver module is used to receive first information sent by a network device, where the first information includes network access information of the network device, and the terminal is an Internet of Things terminal that obtains energy from the environment.

[0166] In a sixth aspect, an embodiment of the present disclosure provides a terminal, including:

[0167] The transceiver module is used to receive first information sent by a relay device, where the first information includes access information of the relay device, and the terminal is an Internet of Things terminal that obtains energy from the environment.

[0168] In a seventh aspect, an embodiment of the present disclosure provides a network device, including:

[0169] The transceiver module is used to send first information to the terminal, where the first information includes network access information of the network device, and the terminal is an Internet of Things terminal that obtains energy from the environment.

[0170] In an eighth aspect, an embodiment of the present disclosure provides a relay device, including:

[0171] The transceiver module is used to send first information to the terminal, where the first information includes access information of the relay device, and the terminal is an Internet of Things terminal that obtains energy from the environment.

[0172] In a ninth aspect, an embodiment of the present disclosure provides a communication device, including:

[0173] one or more processors;

[0174] The communication device is used to execute the method described in the first aspect, the second aspect, the third aspect or the fourth aspect.

[0175] In a tenth aspect, an embodiment of the present disclosure provides a communication system, including a terminal and a network device, wherein:

[0176] The terminal is configured to implement the method according to the first aspect;

[0177] The network device is configured to implement the method described in the third aspect.

[0178] In an eleventh aspect, an embodiment of the present disclosure provides a communication system, including a terminal and a relay device, wherein:

[0179] The terminal is configured to implement the method according to the second aspect;

[0180] The relay device is configured to implement the method described in the fourth aspect.

[0181] In a twelfth aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, wherein:

[0182] When the instructions are executed on a communication device, the communication device is caused to execute the method according to the first aspect, the second aspect, the third aspect or the fourth aspect.

[0183] In a thirteenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation of the first and second aspects.

[0184] In a fourteenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first and second aspects.

[0185] In a fifteenth aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.

[0186] It is understandable that the above-mentioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0191] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0192] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0193] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0194] 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.

[0195] 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.

[0196] 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.

[0197] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0198] 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.

[0199] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0200] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0201] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0202] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0203] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0204] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0205] 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.

[0206] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0207] As shown in FIG1 , the communication system 100 includes at least one of the following: a terminal 101 , a network device 102 , a continuous wave node (CW node or CWN) 103 , an energy source node (ESN) 104 , and an uplink receiver (UR) 105 .

[0208] Among them, terminal 101 can be an Ambient-IoT terminal; network device 102 can be understood as a network node, and network device 102 can be a node (Downlink Signal Node, DSN) that sends downlink information, such as a base station, or a relay device such as a relay UE. CWN103 is used to send electromagnetic waves so that terminal 101 can use electromagnetic waves to send uplink information based on backscattering; ESN104 is used to power terminal 101; UR105 can be other terminals or user equipment (UE) other than terminal 101, and is used to receive uplink information sent by Ambient-IoT terminal 101. For example, it receives uplink information sent by terminal 101 based on backscattering communication.

[0209] As shown in Figure 1, the Ambient-IoT communication system includes four links: Link 1 for transmitting downlink information, Link 2 for receiving uplink information, Link 3 for sending CWs, and Link 4 for sending charging signals. The network devices 102, CWN 103, ESN 104, and UR 105 involved in these four links can be independently configured, or they can be the same node or device, or two, three, or four of them can be configured as a single node or device.

[0210] 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.

[0211] In some embodiments, the power acquisition and storage capabilities of the terminal 101 vary depending on the type and operating mode of the terminal 101. The types of the terminal 101 include:

[0212] Device A: cannot independently generate or amplify signals. For example, Device A uses backscattering transmission, also known as backscatter communications.

[0213] Device B: Has energy storage capabilities but cannot independently generate signals. For example, Device B uses backscattering, where the stored energy is used to amplify reflected signals.

[0214] Device C: has energy storage capabilities and can independently generate signals, such as a radio frequency (RF) module that actively sends signals.

[0215] Among the three types of Ambient-IoT terminals 101 described above, device C has the strongest capabilities and the highest terminal cost. Devices A and B have weaker capabilities and lower terminal costs. Furthermore, since devices A and B can only operate in backscatter mode and cannot actively transmit signals, their supported coverage range is smaller. However, the power consumption of device A or device B in this operating mode is much lower than that of device C.

[0216] In some embodiments, the network device 102 may include at least one of an access network device and a core network device. Alternatively, the network device 102 may also be a relay device, such as a relay UE.

[0217] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0218] 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.

[0219] 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.

[0220] In some embodiments, the core network device can be a device including one or more network elements, or it can be multiple devices or device groups, each including all or part of one or more network elements. The network element can be virtual or physical. The core network includes, for example, at least one of the Evolved Packet Core (EPC), the 5G Core Network (5GCN), and the Next Generation Core (NGC). Alternatively, the core network device refers to a network element with a specific function, such as the Access Management Function (AMF), the Service Management Function (SMF), etc.

[0221] 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.

[0222] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG. 1 , or a part of the main body thereof, but are not limited thereto.

[0223] The entities shown in Figure 1 are examples. The communication system may include all or part of the entities in Figure 1, and may also include other entities outside of Figure 1. The number and form of the entities are arbitrary. The connection relationship between the entities is an example. The entities may be connected or disconnected, and the connection may be in any manner, which may be direct or indirect, and may be wired or wireless.

[0224] 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 processing methods, and next-generation systems based on and extending these. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0225] In the disclosed embodiment, the terminal 101 can communicate based on the backscattering method. Backscatter communication is an extremely low-power modulation and transmission technology that uses the backscattering principle of radio frequency signals, and is a means to achieve the intelligent connection of all things. In backscatter communication, CWN103 sends a radio frequency signal such as an electromagnetic wave, and the terminal 101 receives the electromagnetic wave. The internal circuit of the terminal 101 modulates the information to be transmitted on the basis of the incident electromagnetic wave through load impedance modulation and other methods, and then sends out the modulated electromagnetic wave carrying the information. There are many ways to modulate information, such as amplitude shift keying (ASK), frequency shift keying (FSK) or phase shift keying (PSK).

[0226] In the disclosed embodiments, the Ambient IoT system can be used in application scenarios such as inventory management, sensors, positioning, and command execution. In these application scenarios, the coverage areas of multiple network devices 102 used for ambient IoT may overlap geographically. In such cases, it is necessary to determine how the terminal 101 selects or accesses the network device 102.

[0227] Figure 2a is an interactive diagram of a method for sending and receiving information according to an embodiment of the present disclosure. As shown in Figure 2a, an embodiment of the present disclosure relates to a method for sending and receiving information, the method comprising:

[0228] Step S2101 , the network device 102 sends second information to the terminal 101 .

[0229] In some embodiments, the network device 102 or network node may be a base station or a relay node, such as a relay UE. The terminal 101 is an IoT terminal that obtains energy from the environment, namely an Ambient-IoT terminal, or a device.

[0230] Optionally, when the network device 102 is a base station, reference may also be made to the embodiment shown in FIG. 2 b .

[0231] Optionally, when the network device 102 is a relay device, reference may also be made to the embodiment shown in FIG. 2c .

[0232] Optionally, the second information may be indication information.

[0233] In some embodiments, for a plurality of different network devices 102, each network device 102 may respectively send its own corresponding second information to the terminal 101. The coverage areas of the plurality of network devices 102 may overlap.

[0234] In some embodiments, the second information is used to indicate a node identifier of a corresponding network device 102 , and the corresponding network device 102 is the network device 102 that sends the second information.

[0235] Optionally, the node identifier may be a cell identifier or a device identifier. When the network device 102 is a base station, referring to step S2201 of FIG2b , the second information sent by it may include its own cell identifier (cell ID) or cell identifier. When the network device 102 is a relay UE, referring to step S2301 of FIG2c , the second information sent by it may include its own device identifier. For example, multiple network devices 102 each send the second information to the terminal 101 to respectively send the cell identifier or device identifier of each network device 102 to the terminal 101.

[0236] Optionally, the second information includes a preamble sequence or a reference signal. The second information is used by the terminal 101 to discover the network device 102.

[0237] Optionally, the network device 102 sends the second information in a broadcast manner, and any terminal 101 within its coverage range can receive the second information, that is, the network device 102 does not specify a specific terminal 101 to receive the second information.

[0238] In some embodiments, the terminal 101 receives second information sent by multiple network devices 102. When receiving the second information, the terminal 101 can identify the corresponding network device 102 and can initiate an access process for the corresponding network device 102.

[0239] Optionally, when the network device 102 is a base station, the process in which the terminal 101 monitors and receives the second information of each network device 102, ie, the second information, can be understood as a cell search process.

[0240] In some embodiments, each network device 102 sends corresponding second information on a working frequency band supported by itself, where the working frequency band includes a working frequency point of the terminal 101 .

[0241] Optionally, the operating frequency of the terminal 101 may be a working frequency at which the terminal 101 can receive downlink information, and / or a working frequency at which the terminal 101 can send uplink information.

[0242] In some embodiments, when the terminal 101 supports one or more operating frequencies, different network devices 102 may respectively send the second information at the operating frequencies supported by the terminal 101. Taking multiple network devices 102 or multiple network nodes including node A as an example, if the terminal 101 supports one operating frequency, node A may send the second information at the operating frequency to indicate its own identification; if the terminal 101 supports multiple operating frequencies, node A sends the second information at each of the multiple operating frequencies. The other nodes in the multiple network devices 102 refer to the implementation method of node A.

[0243] Optionally, the network devices that send the second information at different operating frequencies may be partially identical or completely identical.

[0244] Optionally, the terminal 101 receives second information respectively sent by multiple network devices 102 at each supported working frequency point.

[0245] In some embodiments, when terminal 101 supports multiple operating frequencies, the multiple operating frequencies may have different priorities. When the priorities of the multiple operating frequencies are different, terminal 101 receives the second information in descending order of the operating frequency priorities, or in other words, terminal 101 performs a cell search in descending order of the operating frequency priorities.

[0246] For example, terminal 101 supports operating frequencies f1 and f2, and multiple network devices 102 transmit second information corresponding to network device 102 at each operating frequency. If the priority of f1 is higher than the priority of f2, terminal 101 preferentially receives the second information of multiple network devices 102 at f1, and then receives the second information of multiple network devices 102 at f2.

[0247] In some embodiments, when the terminal 101 supports multiple operating frequencies, if a default operating frequency is configured or defined therein, the terminal 101 may preferentially receive the second information at the default operating frequency.

[0248] Step S2102 , the network device 102 sends first information to the terminal 101 .

[0249] Optionally, the name of the first information is for illustration only and is not limiting. For example, the first information may also be called auxiliary information.

[0250] In some embodiments, step S2102 may be performed as an independent embodiment, or step S2102 and step S2101 may be performed synchronously or in an exchanged order.

[0251] Optionally, the network device 102 sends the first information in a broadcast manner, and any terminal 101 within its coverage can receive the first information, that is, the network device 102 does not specify a specific terminal 101 to receive the first information.

[0252] Optionally, for a network device 102, the first information and the second information it sends can be sent through the same message, such as at least one of the above-mentioned contents in the first information is sent through the second information. Alternatively, the first information and the second information of the network device 102 are sent through different messages, such as the first information is sent after the network device 102 sends the second information. A fixed transmission delay can be set between the first information and the second information, or the first information is sent immediately after the second information is sent.

[0253] Optionally, the first information includes network access information of the network device that sends the first information, that is, the first information indicates the network access information of the corresponding network device.

[0254] In some embodiments, the network access information includes at least one of the following:

[0255] The load of the network device 102 at the operating frequency of the terminal 101;

[0256] Whether to set a separate CWN103 at the working frequency;

[0257] Whether to set up an energy source node ESN104, wherein the energy source node is controlled by a corresponding network device;

[0258] Bandwidth configuration information of the network device at the working frequency point, the bandwidth configuration information includes bandwidth and / or the number of sub-channels allocated based on bandwidth, wherein the bandwidth is the uplink working bandwidth of the terminal or the downlink working bandwidth of the network device.

[0259] Optionally, the network device 102 corresponding to the first information is the network device that sends the auxiliary information.

[0260] Optionally, the content of the first information is used to assist the terminal 101 in selecting the network device 102 to access.

[0261] Optionally, different load levels can be defined through a protocol, and each of the multiple network devices 102 can correspond to one of the load levels at different times. The lower the load level of a network device 102 at the operating frequency of the terminal 101, the more suitable the network device is for access by the terminal 101.

[0262] Optionally, network device 102 sets a separate CWN 103 at the operating frequency of terminal 101, indicating that CWN 103 is closer to terminal 101, and the effect of terminal 101 using electromagnetic waves for backscattering will be better. Optionally, CW is generally of constant amplitude, and CWN 103 can be a separate node, or a network device or intermediate node (such as a UE) that communicates with terminal 101. Optionally, the frequency of the electromagnetic wave emitted by terminal 101 can be the same as or offset from the frequency of CWN 103. The offset size is related to the hardware characteristics of terminal 101, for example, it can be one or more fixed values, or a dynamically adjusted value.

[0263] Optionally, the provision of ESN 104 controlled by network device 102 indicates that network device 102 can better coordinate the energy collection or energy acquisition process of terminal 101. When network device 102 is a network device, ESN 104 can be controlled by the network device; when network device 102 is a relay device, ESN 104 can be controlled by the relay device or by a network device connected to the relay device.

[0264] Optionally, the bandwidth configuration information may indicate the channel bandwidth configuration for the operating frequency, such as the bandwidth or bandwidth size used for the operating frequency, the number of sub-channels, etc. Bandwidth may be the downlink operating bandwidth of network device 102 or the uplink operating bandwidth applicable to multiple terminals 101. A larger bandwidth indicates a larger resource pool available for transmission and a greater number of sub-channels that can be divided. For example, a larger uplink operating bandwidth indicates a larger resource pool applicable to uplink transmissions by multiple terminals 101.

[0265] In some embodiments, the terminal 101 receives the first information of each network device 102 and may decide or determine the network device 102 to access based on the auxiliary information.

[0266] In some embodiments, when the terminal 101 supports one or more operating frequencies, the network device 102 may send the first information at each operating frequency at the operating frequency.

[0267] Optionally, the terminal 101 receives the first information sent by one or more network devices 102 at each of the multiple supported operating frequencies.

[0268] Optionally, the multiple operating frequency points may have different priorities. When the priorities of the multiple operating frequency points are different, the terminal 101 receives the auxiliary information in descending order of the priorities of the operating frequency points.

[0269] In step S2103 , the terminal 101 determines the network device 102 that meets the first condition.

[0270] In some embodiments, among the plurality of network devices 102 , there may be one or more network devices 102 that meet the first condition.

[0271] In some embodiments, the first condition includes at least one of the following:

[0272] The signal reception quality of the second information sent by the network device 102 is higher than the first threshold;

[0273] The load of the network device 102 at the terminal operating frequency is lower than a second threshold;

[0274] The network device 102 sets a separate CWN 103 at the working frequency;

[0275] The network device 102 sets an energy source node ESN 104 at the working frequency point, and the ESN 104 is controlled by the corresponding network device 102;

[0276] The bandwidth of the network device 102 at the operating frequency is greater than a third threshold;

[0277] The number of sub-channels of the network device 102 at the working frequency is greater than a fourth threshold.

[0278] Optionally, satisfying the first condition may refer to satisfying one or more, or all, of the first conditions.

[0279] Optionally, after receiving the second information from network device 102, terminal 101 may determine the signal reception quality thereof, such as determining a received signal strength indication (RSSI). For example, if terminal 101 receives the second information sent by network device 102 and the RSSI of the second information is higher than a first threshold, terminal 101 may determine that network device 102 meets the first condition.

[0280] Optionally, the more the following items are met, the more suitable the network device 102 is for access: the higher the signal reception quality, the lower the load of the network device 102 on the terminal operating frequency, a separate CWN 103 is set, and the ESN 104 is controlled by the corresponding network device 102, and the bandwidth is larger or the number of sub-channels is larger.

[0281] In some embodiments, the network device 102 that meets the first condition may include a first network device. Optionally, the first network device may be selected by the terminal 101.

[0282] In some embodiments, the terminal 101 may determine a network device that meets the first condition based on the terminal product implementation. The first condition here may be described in the above embodiment, or may be defined by the terminal 101 itself.

[0283] In some embodiments, multiple network devices 102 send the second information at different time domain locations, and the first network device is:

[0284] The terminal determines, based on the received second information, the first network device that satisfies the first condition in the time domain. If the terminal first receives the second information from node A in the time domain, and node A satisfies the first condition, then node A is the first network device that satisfies the first condition.

[0285] or,

[0286] Any network device that meets the first condition within the monitoring duration or the network device with the best quality among the network devices that meet the first condition, wherein the monitoring duration is the duration for the terminal to receive the second information of some or all network devices.

[0287] Optionally, the standard for optimal quality may be defined by a protocol, or defined by the terminal 101. For example, the one with the highest RSSI, the smallest load, or the one with a single CWN 103 may be considered to have the best quality.

[0288] Optionally, the monitoring duration satisfies:

[0289] Greater than or equal to the maximum value of multiple second information sending cycles defined by the protocol;

[0290] Greater than or equal to the second information sending period of at least one network device.

[0291] In one example, the terminal 101 listens to and receives the second information sent by each network device 102 at the supported working frequency, and determines whether the network device 102 meets the first condition based on the listened second information and the network device 102 corresponding to the second information. The first network device 102 that meets the aforementioned first condition can be determined as the first network device.

[0292] In this example, satisfying the first condition may be satisfying at least one of the above-mentioned first conditions, such as the RSSI of the second information sent by the first network device is greater than the first threshold, the load of the first network device at the operating frequency of the terminal 101 is lower than the second threshold, and the first network device is provided with a separate CW node, etc.

[0293] In another example, the monitoring duration is T1, and the terminal 101 continuously monitors the second information during T1. If the second information of multiple network devices 102 is monitored during T1, the first network device may be any one of the network devices that meets the first condition.

[0294] In this example, the duration of T1 may be defined by a protocol. For example, the duration of T1 may be greater than or equal to the transmission period of the second information. The transmission period of the second information is defined by a protocol. The protocol may define one or more possible transmission period values, and different network devices may be applicable to different periods.

[0295] Optionally, the duration T1 may be greater than or equal to the maximum value of the sending period defined by the protocol, so that the terminal 101 can hear the second information at least once within the duration T1 to ensure successful access to the network device 102 .

[0296] In another example, the monitoring duration is, for example, T2. T2 may begin after the terminal 101 monitors or receives the second information for the first time. If the network device corresponding to the second information monitored for the first time satisfies the first condition, the network device may serve as the first network device. If the network device corresponding to the second information monitored for the first time does not meet the first condition, the terminal 101 continues to monitor for T2 and selects the first network device that meets the first condition within T2 as the first network device. In this case, the actual monitoring duration of the terminal 101 may be less than T2. ​​Alternatively, the terminal 101 selects the network device with the best instructions within T2 as the first network device. In this case, the actual monitoring duration of the terminal 101 is equal to T2.

[0297] In this example, the duration of T2 may be defined by a protocol. For example, the duration of T2 may be greater than or equal to the transmission period of the second information, such as greater than the maximum value of the possible transmission period of the second information.

[0298] In some embodiments, when the terminal 101 supports one or more operating frequencies, the terminal 101 may determine a network device 102 that meets the first condition at each operating frequency.

[0299] Optionally, the multiple operating frequencies may have different priorities. When the priorities of the multiple operating frequencies are different, the terminal 101 determines the network device 102 that meets the first condition at each operating frequency in descending order of the operating frequency priorities, that is, performs cell selection at each operating frequency.

[0300] Step S2104: Terminal 101 establishes a connection with the first network device.

[0301] Optionally, the first network device is a network device that satisfies the first condition and is determined by the terminal 101 from among multiple network devices. The first network device may be determined with reference to the implementation of step S2103 .

[0302] Optionally, when the first network device is a base station, this step and the embodiment of determining the first network device may be a cell selection process.

[0303] Optionally, during the process of establishing a connection between the terminal 101 and the first network device, an access process may be initiated, such as the terminal 101 sending its own device identification to the first network device. When the first network device receives the device identification, it may send a response message to the terminal, indicating that the connection with the terminal 101 is successfully established.

[0304] In some embodiments, after establishing a connection with the first network device, the terminal 101 can receive downlink information sent by the first network device. As shown in Figure 1, the terminal 101 can also receive electromagnetic waves sent by CWN103 and energy sent by ESN104; and based on backscattering, the information to be transmitted in the downlink information is loaded on the electromagnetic wave to form reflected uplink information, and the uplink information is sent to UR105 to complete the information transmission.

[0305] In step S2105 , when the terminal 101 determines that the second condition is met, it switches to connect to the second network device.

[0306] Optionally, the second network device and the first network device may be of different device types, for example, the first network device is a base station and the second network device is a relay UE. Alternatively, the first network device and the second network device may be of the same device type, such as both are base stations or both are relay UEs.

[0307] The second network device may also be referred to as a network device to be switched.

[0308] In some embodiments, when both the first network device and the second network device are base stations, this step may be a cell reselection process, wherein the first network device corresponds to the current cell, which may be a source base station, and the second network device corresponds to a neighboring cell.

[0309] Optionally, the terminal 101 may actively reselect a cell, or reselect a cell based on an instruction from the first network device.

[0310] In some embodiments, the second condition includes at least one of the following:

[0311] The load of the first network device at the terminal operating frequency is higher than a second threshold;

[0312] The load of the second network device at the terminal operating frequency is lower than that of the first network device, that is, the load of the first network device at the terminal operating frequency is higher than the load of the network device to be switched;

[0313] The signal reception quality of the second information sent by the first network device is lower than a first threshold;

[0314] The signal reception quality of the second information sent by the second network device is higher than the signal reception quality of the second information sent by the first network device;

[0315] The signal reception quality of the second information sent by the second network device is higher than a fifth threshold, and the signal reception quality of the second information sent by the first network device is lower than the fifth threshold;

[0316] The third information of the first network device is received, where the third information is used to instruct the terminal to reselect a network device.

[0317] It is understandable that the first to fifth thresholds are only used for name distinction and have no magnitude or order relationship with each other. The above thresholds can be defined by network device configuration or protocol.

[0318] Optionally, the third information may be indication information, such as the second indication information.

[0319] In one example, upon receiving the second information from the second network device, terminal 101 may determine whether the second network device meets a second condition, such as a lower load than the first network device, or a higher RSSI corresponding to the second network device than the first network device. If the conditions are met, terminal 101 may proactively initiate a process of leaving the first network device and connecting to the second network device.

[0320] In this example, the terminal 101 may first initiate the process of joining the second network device, and after the process of joining the second network device is successful, then initiate the process of leaving the first network device; or it may first initiate the process of leaving the first network device, and then initiate the process of joining the second network device.

[0321] In another example, the reselection of terminal 101 is instructed by the first network device. For example, if the first network device can receive a signal sent by terminal 101 but the reception quality is poor, such as a high bit error rate, the first network device can send second instruction information to terminal 101.

[0322] Optionally, the first network device may not indicate the reselected network device information in the third information, and the terminal 101 will perform a cell search on the working frequency point and blindly monitor the second information to reselect the second network device for access.

[0323] Optionally, the third information includes an identifier of at least one network device to be reselected.

[0324] For example, the third information includes the ID of a new cell that the first network device expects the terminal to access. After receiving the third information, the terminal 101 will perform a cell search on the working frequency and blindly monitor the second information.

[0325] If the second information corresponding to the new cell ID is monitored, the terminal 101 chooses to access the new cell.

[0326] If the terminal does not receive the second information sent by the network device indicated by the third information, the second network device is the network device corresponding to the second information received by any terminal. For example, if the terminal does not monitor the second information corresponding to the new cell ID, but receives the second information of another cell, it can access one of the other cells.

[0327] Optionally, the priority of at least one identifier is different, and the terminal determines the second network device identifier among the at least one network device identifier in descending order of the priority of the identifiers.

[0328] Among them, after receiving the third information including the network device identification, the terminal 101 can first search for the new cell ID with high priority on the working frequency point according to the priority order, that is, blindly monitor the second information of the new cell with high priority.

[0329] If multiple new cells indicated by the first network devices are detected, the terminal 101 can select one of them for access, or select a cell with a higher priority for access. If the second information of the new cell indicated in the third information is not detected, one of the other cells whose second information is detected can be selected for access.

[0330] Optionally, the first network device may proactively initiate reselection, and the first network device may also transmit information about the terminal 101 to the second network device, and pre-configure the configuration information of the second network device for the terminal 101 to the terminal 101. The first network device proactively initiates the process of the terminal 101 leaving the current cell.

[0331] In some embodiments, when the terminal 101 supports one or more operating frequencies, the terminal 101 may perform cell reselection at each operating frequency, that is, determine the second network device 102 .

[0332] Optionally, the multiple operating frequency points may have different priorities. When the priorities of the multiple operating frequency points are different, the terminal 101 performs cell reselection on each operating frequency point in descending order of the priority of the operating frequency points.

[0333] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", and "field" can be used interchangeably.

[0334] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0335] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0336] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0337] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0338] In some embodiments, the terms "component carrier (CC)", "cell", "frequency carrier", "carrier frequency" and the like can be used interchangeably.

[0339] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0340] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0341] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.

[0342] The method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2105, for example, the method includes steps S2101 and S2104.

[0343] In some embodiments, at least one of steps S2102, S2103, and S2105 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0344] In some embodiments, steps S2101 and S2102 may be executed synchronously or in an exchanged order.

[0345] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 a .

[0346] Figure 2b is an interactive diagram of a method for sending and receiving information according to an embodiment of the present disclosure. As shown in Figure 2b, an embodiment of the present disclosure relates to a method for sending and receiving information, the method comprising:

[0347] Step S2201: The network device sends second information to the terminal 101.

[0348] Optionally, the implementation of step S2201 can refer to the relevant implementation of step S2101 and will not be repeated here.

[0349] Optionally, the network device is a base station, and the second information includes an identifier of the network device, such as a cell identifier.

[0350] Step S2202: The network device sends first information to the terminal 101.

[0351] Optionally, the implementation of step S2202 may refer to the relevant implementation of step S2102 and will not be repeated here.

[0352] Optionally, the first information includes network access information of the network device.

[0353] Optionally, the network access information includes at least one of the following:

[0354] The load of the network device at the operating frequency of the terminal;

[0355] Whether the network device is configured with a separate continuous electromagnetic wave node CWN at the operating frequency point;

[0356] Whether the network device is configured with an energy source node ESN controlled by the network device at the operating frequency point;

[0357] The bandwidth configuration information of the network device at the working frequency point includes the bandwidth and / or the number of sub-channels allocated based on the bandwidth, wherein the bandwidth is the uplink working bandwidth of the terminal or the downlink working bandwidth of the network device.

[0358] Step S2203: Terminal 101 establishes a connection with a network device, and the network device meets the first condition.

[0359] Optionally, the implementation of step S2203 may refer to the relevant implementations of steps S2103 to S2104, which will not be repeated here.

[0360] Optionally, the second information is the second information first received by the terminal in the time domain.

[0361] Optionally, the receiving position of the second information is within a monitoring duration, and the monitoring duration satisfies one of the following conditions:

[0362] Greater than or equal to the maximum value of multiple second information sending cycles defined by the protocol;

[0363] Greater than or equal to the second information sending period of at least one network device.

[0364] Optionally, the first condition includes at least one of the following:

[0365] The signal reception quality of the second information is higher than a first threshold;

[0366] The load of the network device at the operating frequency of the terminal is lower than a second threshold;

[0367] The network device sets a separate CWN at the operating frequency point;

[0368] The network device sets the ESN controlled by the first network device at the operating frequency point;

[0369] The bandwidth of the network device at the operating frequency point is greater than a third threshold;

[0370] The number of sub-channels of the network device at the operating frequency point is greater than a fourth threshold.

[0371] Step S2204: When the terminal 101 determines that the second condition is satisfied, it performs network device switching.

[0372] Optionally, the implementation of step S2204 may refer to the relevant implementation of step S2105 and will not be repeated here.

[0373] Optionally, the second condition includes at least one of the following:

[0374] The load of the network device at the operating frequency of the terminal is higher than a second threshold;

[0375] The load of the network device at the operating frequency of the terminal is higher than the load of the network device to be switched;

[0376] The signal reception quality of the second information is lower than a first threshold;

[0377] The signal reception quality of the second information is lower than the signal reception quality of the second information sent by the network device to be switched;

[0378] The terminal receives third information sent by the network device, where the third information is used to instruct the terminal to reselect the network device, that is, reselect the cell.

[0379] Optionally, the third information includes an identifier of at least one network device to be reselected.

[0380] Optionally, the terminal determines the identifier corresponding to the network device to be switched (such as the aforementioned second network device) in the at least one identifier to be reselected in descending order of priority of the identifiers.

[0381] Optionally, when it is determined that the terminal has not searched for the at least one network device to be reselected, the terminal searches for a network device to be switched other than the at least one network device to be reselected.

[0382] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 b .

[0383] Figure 2c is an interactive diagram of a method for sending and receiving information according to an embodiment of the present disclosure. As shown in Figure 2c, an embodiment of the present disclosure relates to a method for sending and receiving information, the method comprising:

[0384] Step S2301 : The relay device sends second information to the terminal 101 .

[0385] Optionally, the implementation of step S2301 may refer to the relevant implementation of step S2101 and will not be repeated here.

[0386] Optionally, the second information includes a device identification or identification of the relay device.

[0387] Step S2302 : The relay device sends first information to the terminal 101 .

[0388] Optionally, the implementation of step S2302 may refer to the relevant implementation of step S2102 and will not be repeated here.

[0389] Optionally, the first information includes access information of the relay device, and the terminal is an Ambient-IoT terminal.

[0390] Optionally, the access information includes at least one of the following:

[0391] The load of the relay device at the operating frequency of the terminal;

[0392] Whether the relay device is configured with a separate CWN at the operating frequency;

[0393] Whether the relay device sets an ESN on the operating frequency, and the ESN is controlled by the relay device or a network device to which the relay device is connected;

[0394] The bandwidth configuration information of the relay device at the working frequency point includes the bandwidth and / or the number of sub-channels allocated based on the bandwidth, wherein the bandwidth is the working bandwidth of the terminal or the relay device.

[0395] Step S2303: Terminal 101 establishes a connection with the relay device, and the relay device meets the first condition.

[0396] Optionally, the implementation of step S2303 may refer to the relevant implementations of steps S2103 to S2104, which will not be repeated here.

[0397] Optionally, when the terminal receives the second information of multiple relay devices, it is determined that a first relay device among the multiple relay devices is connected, and the first relay device meets the first condition.

[0398] Optionally, the second information is the first second information received by the terminal in the time domain.

[0399] Optionally, the receiving location of the second information is within a monitoring duration, and the monitoring duration satisfies one of the following conditions:

[0400] Greater than or equal to the maximum value of multiple second information sending cycles defined by the protocol;

[0401] Greater than or equal to the second information sending period of at least one relay device.

[0402] Optionally, the first condition includes at least one of the following:

[0403] The signal reception quality of the second information is higher than a first threshold;

[0404] The load of the relay device at the operating frequency of the terminal is lower than a second threshold;

[0405] The relay device sets a separate CWN at the operating frequency point;

[0406] The relay device sets an ESN on the working frequency point, and the ESN is controlled by the first relay device or a network device connected to the first relay device;

[0407] The bandwidth of the relay device at the operating frequency point is greater than a third threshold;

[0408] The number of sub-channels of the relay device at the operating frequency point is greater than a fourth threshold.

[0409] Step S2304: When the terminal 101 determines that the second condition is satisfied, the terminal 101 performs relay device switching.

[0410] Optionally, the implementation of step S2304 may refer to the relevant implementation of step S2105 and will not be repeated here.

[0411] Optionally, the second relay device is different from the first relay device.

[0412] Optionally, the second condition includes at least one of the following:

[0413] The load of the relay device at the operating frequency of the terminal is higher than a second threshold;

[0414] The load of the relay device at the operating frequency of the terminal is higher than the load of the relay device to be switched;

[0415] The signal reception quality of the second information is lower than a first threshold;

[0416] The signal reception quality of the second information is lower than the signal reception quality of the second information sent by the relay device to be switched;

[0417] The terminal receives third information about the relay device, where the third information is used to instruct the terminal to reselect the relay device.

[0418] Optionally, the third information includes an identifier of at least one relay device to be reselected.

[0419] Optionally, the terminal determines the identifier corresponding to the switching relay device in the at least one identifier to be reselected according to the order of the identifier priorities from high to low.

[0420] Optionally, when it is determined that the terminal has not searched for the at least one relay device to be reselected, the terminal searches for a relay device to be switched other than the at least one relay device to be reselected.

[0421] Optionally, during the switching process, the relay device may switch to the base station, which can be combined with the description of the above embodiment.

[0422] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2c.

[0423] FIG3a is a schematic diagram of a method for receiving information according to an embodiment of the present disclosure. As shown in FIG3a, the embodiment of the present disclosure relates to a method for receiving information, which is executed by terminal 101 and includes:

[0424] Step S3101 , the terminal 101 receives the second information sent by the network device 102 .

[0425] Optionally, the implementation of step S3101 may refer to the optional implementation of step S2101, S2201 or S2301, and will not be repeated here.

[0426] Step S3102: Terminal 101 establishes a connection with network device 102 that meets the first condition.

[0427] Optionally, the implementation of step S3102 may refer to the optional implementation of steps S2103 to S2104, S2203 to S2204 or S2303 to S2304, which will not be repeated here.

[0428] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 3 a .

[0429] FIG3b is a schematic diagram of a method for receiving information according to an embodiment of the present disclosure. As shown in FIG3b, the embodiment of the present disclosure relates to a method for receiving information, which is executed by terminal 101 and includes:

[0430] Step S3201 , the terminal 101 receives the second information sent by the network device 102 .

[0431] Optionally, the implementation of step S3101 may refer to the optional implementation of step S2101, S2201 or S2301, and will not be repeated here.

[0432] Step S3202 , the terminal 101 receives the first information sent by the network device 102 .

[0433] Optionally, the implementation of step S3102 may refer to the optional implementation of step S2102, S2202 or S2302, which will not be repeated here.

[0434] Step S3203: Terminal 101 establishes a connection with a network device that meets the first condition.

[0435] Optionally, the implementation of step S3203 may refer to the optional implementation of steps S2103 to S2104, S2203 to S2204 or S2303 to S2304, which will not be repeated here.

[0436] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 3 b .

[0437] FIG3c is a schematic diagram of a method for receiving information according to an embodiment of the present disclosure. As shown in FIG3c, an embodiment of the present disclosure relates to a method for receiving information, which is executed by terminal 101 and includes:

[0438] Step S3301 , the terminal 101 receives the second information sent by the network device 102 .

[0439] Optionally, the implementation of step S3101 may refer to the optional implementation of step S2101, S2201 or S2301, and will not be repeated here.

[0440] Step S3302: Terminal 101 establishes a connection with network device 102 that meets the first condition.

[0441] Optionally, the implementation of step S3302 may refer to the optional implementation of steps S2103 to S2104, S2203 to S2204 or S2303 to S2304, which will not be repeated here.

[0442] Step S3303: When the terminal 101 determines that the second condition is met, it performs network device switching.

[0443] Optionally, the implementation of step S3303 may refer to the optional implementation of step S2105, S2205 or S2305, which will not be repeated here.

[0444] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 3c.

[0445] FIG3 d is a schematic diagram of a method for receiving information according to an embodiment of the present disclosure. As shown in FIG3 d , an embodiment of the present disclosure relates to a method for receiving auxiliary information, which is performed by terminal 101 and includes:

[0446] Step S3401 , the terminal 101 receives the first information sent by the network device 102 .

[0447] Optionally, the implementation of step S3401 may refer to the optional implementation of step S2102, S2202 or S2302, which will not be repeated here.

[0448] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 3 d .

[0449] FIG4a is a schematic diagram of a method for sending information according to an embodiment of the present disclosure. As shown in FIG4a, an embodiment of the present disclosure relates to a method for sending information, which is performed by a network device 102 and includes:

[0450] Step S4101: The network device 102 sends second information to the terminal 101.

[0451] Optionally, the implementation of step S4101 may refer to the optional implementation of step S2101, S2201 or S2301, and will not be repeated here.

[0452] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 4 a .

[0453] FIG4b is a schematic diagram of a method for sending information according to an embodiment of the present disclosure. As shown in FIG4b, an embodiment of the present disclosure relates to a method for sending information, which is performed by a network device 102 and includes:

[0454] Step S4201: The network device 102 sends second information to the terminal 101.

[0455] Optionally, the implementation of step S4201 may refer to the optional implementation of steps S2101, S2201 or S2301, which will not be repeated here.

[0456] Step S4202: The network device 102 establishes a connection with the terminal, and the network device 102 meets the first condition.

[0457] Optionally, the implementation of step S4102 may refer to the optional implementation of steps S2103 to S2104, S2203 to S2204 or S2303 to S2304, which will not be repeated here.

[0458] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 4 b .

[0459] FIG4c is a schematic diagram of a method for sending information according to an embodiment of the present disclosure. As shown in FIG4c, an embodiment of the present disclosure relates to a method for sending information, which is performed by a network device 102 and includes:

[0460] Step S4301: The network device 102 sends second information to the terminal 101.

[0461] Optionally, the implementation of step S4301 may refer to the optional implementation of step S2101, S2201 or S2301, which will not be repeated here.

[0462] Step S4302 , the network device 102 sends first information to the terminal 101 .

[0463] Optionally, the implementation of step S4302 may refer to the optional implementation of step S2102, S2202 or S2302, which will not be repeated here.

[0464] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 4c.

[0465] FIG4d is a schematic diagram of a method for sending information according to an embodiment of the present disclosure. As shown in FIG4d , the embodiment of the present disclosure relates to a method for sending information, which is performed by the network device 102 and includes:

[0466] Step S4401: The network device 102 sends first information to the terminal 101.

[0467] Optionally, the implementation of step S4401 may refer to the optional implementation of step S2102, S2202 or S2302, which will not be repeated here.

[0468] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 4c.

[0469] The present disclosure provides a method for selecting a cell to access when the coverage areas of multiple ambient IoT network devices overlap geographically in the Ambient IoT network. To facilitate understanding of the present disclosure, some examples are listed below:

[0470] Example 1:

[0471] If a device receives first signals / information from multiple network devices at its operating frequency, the first signals / information are used for the device to access a cell. The device can determine which cell to access based on the RSSI of the received first signals / information.

[0472] Optionally, the first information / signal is sent by the network device on a working frequency band supported by the network device, and may include an ID of the network device, which is used for the device to identify a cell and access the cell accordingly.

[0473] Optionally, the device corresponds to the terminal 101 or the Ambient IOT terminal in the aforementioned embodiment. The first signal / information corresponds to the second information in the aforementioned embodiment.

[0474] Example 2:

[0475] Network devices can provide auxiliary information to help them determine which cell to access. The auxiliary information includes:

[0476] The load on the network device at the operating frequency. The protocol can define load levels, so operating frequencies with lower loads are more suitable for device access.

[0477] Is there a separate CW node at this frequency? A separate CW node means it is closer to the device and has better backscattering effect.

[0478] Are there any energy source nodes controlled by network devices for energy collection? Having energy source nodes controlled by the network means that the network can better coordinate the energy collection process of the device;

[0479] The channel bandwidth configuration applied to the working frequency point (for example, the number of sub-channels, etc., more sub-channels means a larger transmission resource pool).

[0480] Optionally, the auxiliary information may be sent in the first information / signal or in a separate message. For example, the auxiliary information may be sent in a second message following the first signal / message. The second message may have a fixed delay with the first message, or the second message may be sent immediately after the first signal / message ends.

[0481] Optionally, the network device may send auxiliary information alone without sending the second information.

[0482] Optionally, the auxiliary information corresponds to the aforementioned first information.

[0483] Example 3:

[0484] Multiple network devices with overlapping coverage may send the first information / signal at different times. To enable the device to select a better cell for access, the following methods can be used:

[0485] In method 1, the device monitors the first information at the operating frequency. If it detects the first cell that meets the first condition (for example, the RSSI of the cell is greater than the set value, the load of the network device at the operating frequency is lower than a certain threshold, there is a separate CW node, etc., that is, one or a combination of the conditions in the aforementioned embodiments), it chooses to access the cell.

[0486] Method 2: The device continuously monitors the first information / signal within the T1 duration. If the device hears the first information / signal sent by multiple network devices within the T1 duration, the device selects one of the cells to access. The T1 duration can be defined by the protocol. Generally, the T1 duration should be greater than or equal to the possible sending period of the first information / signal. The possible sending period of the first information / signal can be defined by the protocol, including one or more possible period values. Different network devices may use different periods. In order to ensure that the device can hear the first information / signal sent by the surrounding base stations for cell access at least once within the T1 duration, the T1 duration should generally be greater than or equal to the maximum period of the first information / signal defined by the protocol.

[0487] In method 3, after the device first hears the first information / signal, if it meets specific requirements, such as an RSSI greater than a set value and the network device load at the operating frequency being below a certain threshold, the device will directly select the cell to connect to. If the specific threshold is not met, the device continues to monitor for T2. T2 can be defined by the protocol; generally, it should be greater than or equal to the possible transmission period of the first information / signal. The device selects the first cell that meets the specific requirements detected within T2 (in which case, the device's final monitoring duration may be less than T2) or selects the optimal cell within T2 (in which case, the device must monitor for the entire T2 duration). The "optimal" criteria can be defined by the protocol, such as the cell with the highest RSSI, the lowest load, or the cell with a dedicated CW node; it can also be implemented by the device itself and selected.

[0488] Method 4: Complete implementation by the device product.

[0489] Example 4:

[0490] In scenarios with overlapping coverage, the device can also proactively reselect a cell. For example, when the device receives the first information / signal from a neighboring cell, and the first information / signal meets certain requirements, such as the load of the neighboring cell's operating frequency is lower than a certain threshold of the current cell, the RSSI of the first information / signal of the neighboring cell's operating frequency is higher than a certain threshold of the current cell, or the RSSI of the first information / signal of the neighboring cell's operating frequency is higher than a certain threshold, and the RSSI of the first information / signal of the current cell's operating frequency is lower than a certain threshold, the device can initiate the process of leaving the current cell and joining the neighboring cell.

[0491] Optionally, the device may first initiate a process of joining a neighboring cell, and after the process of joining the neighboring cell is successful, initiate a process of leaving the original cell, or may first initiate a process of leaving the original cell, and then initiate a process of joining a neighboring cell.

[0492] Cell reselection can also be initiated by the base station. The base station can instruct the device to reselect a cell. For example, if the base station receives a signal from the device but the reception quality is poor (for example, a high bit error rate), the base station can instruct the device to reselect a cell. This can be done in the following two ways:

[0493] In method 1, the device receives an instruction to reselect a cell, but does not specify which cell to reselect to. The device then performs a cell search (blind monitoring) on ​​the frequency where the first information / signal was sent, and selects a cell to access.

[0494] In method 2, the device receives an indication to reselect a cell, which also includes the ID of the new cell that the base station expects the device to access. The device performs a cell search (blind monitoring) on ​​the frequency where the first information / signal was sent. If the first information / signal with the new cell ID is detected, the device selects the new cell for access. If the first information / signal indicating the new cell is not detected, but the first information / signal of another cell is detected, the device selects a cell from the other detected cells for access.

[0495] In method 3, the device receives an instruction to reselect a cell, which also includes the IDs of multiple cells recommended by the original base station for the device to access. The device can also prioritize these multiple cells and multiple devices. The device performs a cell search on the frequency where the first information / signal was sent, i.e., blind monitoring. If it detects first information / signals sent by multiple recommended cell IDs, it selects a cell for access, or selects the cell with the highest priority. If it does not detect the first information / signal of a new cell recommended by the base station, but detects the first information / signal of other cells, it selects one of the other detected cells for access.

[0496] Optionally, for the process of the device reselecting a cell initiated by the base station, the source base station can also transmit the device information to the target neighboring cell, and pre-configure the device configuration information of the target neighboring cell to the device, and then the source base station actively initiates the process of the device leaving the cell.

[0497] Example 5:

[0498] If the device supports multiple operating frequencies, it can attempt the cell selection process on each frequency. If the operating frequencies supported by the device are prioritized, it can attempt the cell selection process in descending order of priority. Alternatively, if the device supports multiple operating frequencies and has a default operating frequency, it can attempt the cell selection process on the default frequency. If no suitable cell is found, it can then attempt the cell selection process on other operating frequencies.

[0499] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0500] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0501] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0502] Figure 5a is a schematic diagram of the terminal structure proposed in an embodiment of the present disclosure. As shown in Figure 5a, terminal 5100 may include at least one of a transceiver module 5101 and a processing module 5102. In some embodiments, transceiver module 5101 is configured to receive first information sent by a network device, including network access information of the network device. The terminal is an Ambient-IoT terminal.

[0503] Optionally, the transceiver module 5101 is configured to execute at least one of the communication steps of sending and / or receiving performed by the terminal 101 in any of the above methods, which are not described in detail here. Optionally, the processing module 5102 is configured to execute at least one of the other steps performed by the terminal 101 in any of the above methods, which are not described in detail here.

[0504] Alternatively, the transceiver module 5101 is configured to receive first information sent by a relay device, where the first information includes access information of the relay device, and the terminal is an Internet of Things terminal that obtains energy from the environment.

[0505] FIG5 b is a schematic diagram of the structure of a node device according to an embodiment of the present disclosure. As shown in FIG5 b , the node device 5200 may include at least one of a transceiver module 5201 and a processing module 5202 .

[0506] In some embodiments, when the node device 5200 is a network device, the above-mentioned transceiver module 5201 is used to send first information to the terminal, where the first information includes network access information of the network device, and the terminal is an Internet of Things terminal that obtains energy from the environment.

[0507] In some embodiments, when the node device 5200 is a relay device, the transceiver module 5201 is used to send first information to a terminal, where the first information includes access information of the relay device, and the terminal is an Internet of Things terminal that obtains energy from the environment.

[0508] Optionally, the transceiver module 5201 is used to perform at least one of the communication steps such as sending and / or receiving performed by the node device in any of the above methods, which will not be described in detail here. Optionally, the processing module 5202 is used to perform at least one of the other steps performed by the network device 102 in any of the above methods, which will not be described in detail here.

[0509] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0510] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0511] Figure 6a is a schematic diagram of the structure of a communication device 6100 proposed in an embodiment of the present disclosure. Communication device 6100 can be a node device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user device, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 6100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0512] As shown in Figure 6a, the communication device 6100 includes one or more processors 6101. The processor 6101 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 the communication protocol 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. Optionally, the communication device 6100 is used to perform any of the above methods. Optionally, one or more processors 6101 are used to call instructions to enable the communication device 6100 to perform any of the above methods.

[0513] In some embodiments, the communication device 6100 further includes one or more transceivers 6102. When the communication device 6100 includes one or more transceivers 6102, the transceiver 6102 performs at least one of the communication steps, such as sending and / or receiving, in the above-described method, and the processor 6101 performs at least one of the other steps. In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface 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.

[0514] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data. Alternatively, all or part of the memories 6103 may be located outside the communication device 6100. In alternative embodiments, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuits 6104 are connected to the memories 6103 and may be configured to receive data from the memories 6103 or other devices, or to send data to the memories 6103 or other devices. For example, the interface circuits 6104 may read data stored in the memories 6103 and send the data to the processor 6101.

[0515] The communication device 6100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 6100 described in the present disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited by FIG. 6a. 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.

[0516] FIG6b is a schematic diagram of the structure of a chip 6200 according to an embodiment of the present disclosure. If the communication device 6100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 6200 shown in FIG6b , but the present disclosure is not limited thereto.

[0517] The chip 6200 includes one or more processors 6201. The chip 6200 is configured to execute any of the above methods.

[0518] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data. Alternatively, all or part of memory 6203 may be located external to chip 6200. Optionally, interface circuit 6202 is connected to memory 6203 and may be used to receive data from memory 6203 or other devices, or may be used to send data to memory 6203 or other devices. For example, interface circuit 6202 may read data stored in memory 6203 and send the data to processor 6201.

[0519] In some embodiments, the interface circuit 6202 performs at least one of the communication steps, such as sending and / or receiving, in the above-described method. For example, the interface circuit 6202 performing the communication steps, such as sending and / or receiving, in the above-described method means that the interface circuit 6202 performs data exchange between the processor 6201, the chip 6200, the memory 6203, or the transceiver device. In some embodiments, the processor 6201 performs at least one of the other steps.

[0520] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0521] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 6100, the communication device 6100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

[0522] The present disclosure also provides a program product, which, when executed by the communication device 6100, enables the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0523] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods. Industrial Applicability

[0524] The terminal obtains the network access information of the network device according to the first information, so that when the coverage areas of multiple network devices overlap, the terminal can select the appropriate network device for access according to the network access information of different network devices, thereby maintaining good communication quality.

Claims

1. A method for receiving information, the method comprising: A terminal receives first information sent by a network device, the first information including network access information of the network device, and the terminal being an Internet of Things terminal that obtains energy from the environment.

2. The method according to claim 1, wherein, The network access information includes at least one of the following: The load of the network device on the operating frequency point of the terminal; Whether the network device sets a separate Continuous Wave Node (CWN) on the operating frequency point; Whether the network device sets an Energy Source Node (ESN) controlled by the network device on the operating frequency point; The bandwidth configuration information of the network device on the operating frequency point, the bandwidth configuration information including bandwidth and / or the number of sub-channels allocated based on the bandwidth, where the bandwidth is the uplink operating bandwidth of the terminal or the downlink operating bandwidth of the network device.

3. The method according to claim 1 or 2, wherein, The method further comprises: The terminal receives second information sent by the network device, the second information including a cell identifier of the network device.

4. The method according to claim 3, wherein, The method further comprises: The terminal establishes a connection with the network device, and the network device meets a first condition.

5. The method according to claim 4, wherein, The second information is the first second information received by the terminal in the time domain.

6. The method according to claim 4, wherein, The receiving position of the second information is within a listening duration, and the listening duration meets one of the following: Greater than or equal to the maximum value of multiple second information sending periods defined by the protocol; Greater than or equal to the second information sending period of at least one network device.

7. The method according to any one of claims 4 to 6, wherein The first condition includes at least one of the following: The signal reception quality of the second information is higher than a first threshold; The load of the network device on the operating frequency point of the terminal is lower than a second threshold; The network device sets a separate CWN on the operating frequency point; The network device sets an ESN controlled by the network device on the operating frequency point; The bandwidth of the network device on the operating frequency point is greater than a third threshold; The number of sub-channels of the network device on the operating frequency point is greater than a fourth threshold.

8. The method according to claim 4, wherein The method further comprises: The terminal performs network device handover when determining that a second condition is met.

9. The method according to claim 8, wherein The second condition includes at least one of the following: The load of the network device on the operating frequency point of the terminal is higher than the second threshold; The load of the network device on the operating frequency point of the terminal is higher than the load of the network device to be handed over; The signal reception quality of the second information is lower than the first threshold; The signal reception quality of the second information is lower than the signal reception quality of the second information sent by the network device to be handed over; The terminal receives third information sent by the network device, and the third information is used to instruct the terminal to perform network device reselection.

10. The method according to claim 9, wherein, The third information includes identifiers of at least one network device to be reselected.

11. The method according to claim 10, wherein, The terminal determines the identifier corresponding to the network device to be handed over among the identifiers of the at least one network device to be reselected in the order of decreasing priority of the identifiers.

12. The method according to claim 10, wherein, When it is determined that the terminal fails to search for the at least one network device to be reselected, the terminal searches for a network device to be switched outside the at least one network device to be reselected.

13. The method according to any one of claims 1 to 12, wherein, The terminal receives first information sent by a network device, including: On each of one or more operating frequencies supported by the terminal, the terminal receives the first information sent by the network device.

14. The method according to claim 13, wherein, The terminal receives the first information in the order of decreasing priority of the operating frequencies.

15. A method for sending information, the method comprising: A network device sends first information, where the first information includes network access information of the network device.

16. The method according to claim 15, wherein, The network access information includes at least one of the following: The load of the network device on the operating frequency of the terminal; Whether a separate CWN is set on the operating frequency by the network device; Whether an ESN controlled by the network device is set on the operating frequency by the network device; Bandwidth configuration information of the network device on the operating frequency, where the bandwidth configuration information includes bandwidth and / or the number of sub-channels allocated based on the bandwidth, where the bandwidth is the uplink operating bandwidth of the terminal or the downlink operating bandwidth of the network device; the terminal is an Internet of Things terminal that obtains energy from the environment.

17. The method according to claim 15 or 16, wherein The method further comprises: The network device sends second information to the terminal, where the second information includes a cell identifier of the network device.

18. The method according to claim 17, wherein, The method further comprises: The network device establishes a connection with the terminal, and the network device meets a first condition.

19. The method according to claim 18, wherein, The first condition includes at least one of the following: The signal reception quality of the second information is higher than a first threshold; The load of the network device on the operating frequency of the terminal is lower than a second threshold; A separate CWN is set on the operating frequency by the network device; An ESN controlled by the first network device is set on the operating frequency by the network device; The bandwidth of the network device on the operating frequency is greater than a third threshold; The number of sub-channels of the network device on the operating frequency is greater than a fourth threshold.

20. The method according to claim 18, wherein, The method further comprises: The network device sends third information to the terminal, where the third information is used to instruct the terminal to perform network device reselection.

21. The method according to claim 20, wherein, The third information includes identifiers of at least one network device to be reselected.

22. The method according to any one of claims 15 to 21, wherein The network device sends the first information, including: On each of one or more operating frequencies supported by the terminal, the network device sends the first information.

23. A terminal, comprising: A transceiver module, configured to receive first information sent by a network device, where the first information includes network access information of the network device, and the terminal is an Internet of Things terminal that obtains energy from the environment.

24. A network device, comprising: A transceiver module, configured to send first information, where the first information includes network access information of the network device.

25. A communication device, comprising: One or more processors; Wherein, the communication device is configured to execute the method according to any one of claims 1 to 14 or any one of claims 15 to 22.

26. A communication system, comprising a terminal and a network device, wherein, the terminal is configured to implement the method according to any one of claims 1 to 14; the network device is configured to implement the method according to any one of claims 15 to 22.

27. A storage medium storing instructions, wherein, when the instructions run on a communication device, the communication device is caused to execute the method according to any one of claims 1 to 14 or any one of claims 15 to 22.

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