Communication method, terminal, node device, and communication system

Abstract

The present disclosure relates to a communication method, a terminal, a network device, and a communication system. The communication method comprises: when a first condition is satisfied, the terminal sends first information, wherein the first information is used for searching for a node device in communication with the terminal, and the node device comprises one or more node devices. The coverage of the network device can be improved, and the communication distance between the network device and the terminal can be increased.

Description

Communication method, terminal, node device and communication system Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a communication method, a terminal, a node device, and a communication system. Background Art

[0002] Ambient Internet of Things (A-IoT) is a new IoT technology.

[0003] Compared with Narrow Band Internet of Things (NB-IoT) terminal devices, A-IoT terminal devices have a simpler structure and lower hardware and maintenance costs.

[0004] Summary of the Invention

[0005] The technical problem of how to improve the coverage of network equipment and increase the communication distance between network equipment and terminals needs to be solved.

[0006] The embodiments of the present disclosure provide a communication method, a terminal, a node device, and a communication system.

[0007] According to a first aspect of an embodiment of the present disclosure, a communication method is proposed, which includes: when a first condition is met, a terminal sends first information, wherein the first information is used to find a node device communicating with the terminal.

[0008] According to a second aspect of an embodiment of the present disclosure, a communication method is proposed. The communication method includes: a node device receives first information, where the first information is information sent by a terminal when a first condition is met.

[0009] According to a third aspect of an embodiment of the present disclosure, a communication method is proposed, which includes: when a first condition is met, a terminal sends first information, wherein the first information is used to request a node device to communicate with the terminal.

[0010] According to a fourth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: a transceiver module, configured to send first information when a first condition is met, wherein the first information is used to request a requesting node device to communicate with the terminal.

[0011] According to a fifth aspect of an embodiment of the present disclosure, a node device is proposed, including: a transceiver module, configured to receive first information, where the first information is information sent by a terminal when a first condition is met.

[0012] According to a sixth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: one or more processors; wherein the terminal is configured to execute the first aspect and any one of the communication methods in the first aspect.

[0013] According to a seventh aspect of an embodiment of the present disclosure, a node device is proposed, comprising: one or more processors; wherein the network device is used to execute the second aspect and any one of the communication methods in the second aspect.

[0014] According to the eighth aspect of an embodiment of the present disclosure, a communication system is proposed, comprising a terminal and a node device, wherein the terminal is configured to implement the first aspect and any one of the communication methods in the first aspect, and the node device is configured to implement the second aspect and any one of the communication methods in the second aspect.

[0015] According to the ninth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes a communication method such as the first aspect and any one of the first aspects or the second aspect and any one of the second aspects.

[0016] Through the embodiments of the present disclosure, the coverage of network devices can be improved, and the communication distance between network devices and terminals can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] FIG1A is a schematic diagram showing a communication system architecture according to an embodiment of the present disclosure.

[0019] FIG1B is a schematic diagram of a networking mode architecture according to an embodiment of the present disclosure.

[0020] FIG1C is a schematic diagram of a networking mode architecture according to an embodiment of the present disclosure.

[0021] FIG2 is a schematic diagram showing an interaction of a communication method according to an embodiment of the present disclosure.

[0022] FIG3A is a flow chart illustrating a communication method according to an embodiment of the present disclosure.

[0023] FIG3B is a flow chart illustrating a communication method according to an embodiment of the present disclosure.

[0024] FIG4A is a flow chart showing a communication method according to an embodiment of the present disclosure.

[0025] FIG4B is a flow chart illustrating a communication method according to an embodiment of the present disclosure.

[0026] FIG5 is an interactive schematic diagram illustrating a task processing method according to an embodiment of the present disclosure.

[0027] FIG6A is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure.

[0028] FIG6B is a schematic diagram of the structure of a node device proposed in an embodiment of the present disclosure.

[0029] FIG7A is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure.

[0030] FIG7B is a schematic diagram of the structure of the chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] The embodiments of the present disclosure provide a communication method, a terminal, a node device, and a communication system.

[0032] In a first aspect, an embodiment of the present disclosure proposes a communication method, which includes: when a first condition is met, a terminal sends first information.

[0033] In the above embodiment, by sending the first information when the first condition is met and determining the network device that can communicate with the terminal based on the first information, it can be made clear that when the first condition is met, the terminal can discover the network device with which it communicates, and then determine it as a central node or auxiliary node, thereby improving the coverage of the network device.

[0034] In combination with some embodiments of the first aspect, in some embodiments, the terminal receives a first signal and determines that the quality parameter value of the first signal is less than or equal to a first threshold, and the first signal is a signal sent by a network device; the terminal does not receive feedback information from the network device for the second information within a valid time, and the second information is sent by the terminal to the network device.

[0035] In the above embodiment, by defining the situation corresponding to the first condition being met, the triggering condition for sending the first information is clarified. That is, when the communication quality between the terminal and the current network device does not meet the requirements, the network device that can communicate with the terminal can be determined based on the first information.

[0036] In combination with some embodiments of the first aspect, in some embodiments, satisfying the first condition includes that the quality parameter value of the first signal determined by the terminal is less than or equal to a first threshold; different quality parameter values ​​correspond to different first thresholds.

[0037] In combination with some embodiments of the first aspect, in some embodiments, satisfying the first condition further includes: the terminal receiving a first signal, and determining that the quality parameter value of the first signal is greater than or equal to a second threshold; wherein the first threshold is greater than the second threshold.

[0038] In the above embodiment, by limiting the quality parameter value of the first signal to be greater than or equal to the second threshold, it can be clearly determined whether the first condition is met when the type of device is working, thereby determining whether to send the first information.

[0039] In combination with some embodiments of the first aspect, in some embodiments, the first information includes request information, or the first information includes request information and identification information of the terminal; the request information is used to determine the node device communicating with the terminal.

[0040] In the above embodiment, the request information is used by the terminal to request communication from the node device that receives the request information. The node device provides feedback based on the request information, so that the terminal determines the node device that can communicate based on the feedback information.

[0041] In combination with some embodiments of the first aspect, in some embodiments, the first information is carried based on at least one of the following: physical layer control signaling; high-layer control signaling; reference signal.

[0042] In combination with some embodiments of the first aspect, in some embodiments, the first information includes request information and identification information of the terminal, and is carried based on the reference signal; the reference signal carries the identification information of the terminal based on at least one of the following: cyclic shift, different cyclic shifts carry identification information of different terminals; time-frequency domain resources, different time-frequency domain resources carry identification information of different terminals.

[0043] In combination with some embodiments of the first aspect, in some embodiments, the method also includes: the terminal receives a second signal and determines a quality parameter value of the second signal, the second signal carries feedback information, and the feedback information is feedback information sent to the terminal by one or more node devices that have received the first information; the terminal selects the first node device corresponding to the signal with the maximum quality parameter value in the second signal as the node device for communicating with the terminal.

[0044] In the above embodiment, the terminal measures the second signal carrying feedback information to determine the signal quality of the second signals sent by different node devices, and then selects a node device for communication with the terminal based on the quality of the second signal. Selecting the first node device corresponding to the signal with the maximum quality parameter value as the node device for communication with the terminal ensures that subsequent communication quality between the terminal and the first node device meets requirements.

[0045] In combination with some embodiments of the first aspect, in some embodiments, the method also includes: receiving a third signal from the first node device, determining a quality parameter value of the third signal; or, in response to the quality parameter value of the third signal being less than or equal to a third threshold, reselecting a node device for communicating with the terminal; in response to the quality parameter value of the third signal being greater than a third threshold, maintaining communication between the terminal and the first node device.

[0046] In the above embodiment, after the first node device establishes a communication connection with the terminal, if the quality parameters of the communication link between the two do not meet the expected requirements, the terminal reselects the node device for communication, thereby ensuring the communication quality of the terminal.

[0047] In combination with some embodiments of the first aspect, in some embodiments, the reselection of the node device for communicating with the terminal includes: resending the first information; the terminal re-receiving the second signal, determining the quality parameter value of the re-received second signal, the re-received second signal carrying feedback information, and the feedback information is feedback information sent to the terminal by one or more node devices that have received the re-sent first information; the terminal selects the second node device corresponding to the signal with the maximum quality parameter value in the re-received second signal as the node device for communicating with the terminal.

[0048] In the above embodiment, it is clarified that in the case of reselection, the action determined based on the first information is re-executed on the communication node device, and reselection is performed in this way, thereby ensuring that the communication quality between the reselected node device and the terminal meets the requirements.

[0049] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: saving the quality parameter value of the second signal received when the first information is sent for the first time, wherein the saved quality parameter value of the second signal is greater than a third threshold; the reselection of the node device for communicating with the terminal includes: the terminal selecting, based on the saved quality parameter value of the second signal, the second node device corresponding to the signal with the second largest quality parameter value in the second signal, as the node device for communicating with the terminal.

[0050] In the above embodiment, by re-determining the node device based on the saved quality parameter value of the second signal received when the first information was sent for the first time, compared with resending the first information and determining the node device for communicating with the terminal based on the resent first information, the resending of the first information can be reduced, resulting in additional resource overhead.

[0051] In combination with some embodiments of the first aspect, in some embodiments, the resources used by the terminal to send the first information are determined based on at least one of the following resources: pre-configured resources; a resource pool dedicated to the first information; and resources in a public resource pool for sending the first information.

[0052] In combination with some embodiments of the first aspect, in some embodiments, the quality parameter includes at least one of the following: received signal strength indication RSSI; reference signal received power RSRP; reference signal received quality RSRQ.

[0053] In combination with some embodiments of the first aspect, in some embodiments, the feedback information includes: confirmation response information, and / or identification information of the node device.

[0054] In a second aspect, a communication method is provided, the method comprising: a node device receives first information, where the first information is information sent by a terminal when a first condition is met.

[0055] In the above embodiment, by sending the first information when the first condition is met and determining the network device that can communicate with the terminal based on the first information, it can be made clear that when the first condition is met, the terminal can discover the network device with which it communicates, and then determine it as a central node or auxiliary node, thereby improving the coverage of the network device.

[0056] In combination with some embodiments of the second aspect, in some embodiments, satisfying the first condition includes at least one of the following: the quality parameter value of the first signal is less than or equal to the first threshold, the first signal is a signal sent by the network device, and the quality parameter value of the first signal is determined based on the terminal measuring the first signal; the network device does not send feedback information on the second information to the terminal within the effective time, and the second information is information received by the network device from the terminal.

[0057] In combination with some embodiments of the second aspect, in some embodiments, satisfying the first condition includes: a quality parameter value of the first signal is less than or equal to a first threshold, and different quality parameter values ​​correspond to different first thresholds.

[0058] In combination with some embodiments of the second aspect, in some embodiments, satisfying the first condition further includes: the quality parameter value of the first signal is greater than or equal to a second threshold, wherein the first signal is sent by a network device and the first threshold is greater than the second threshold.

[0059] In combination with some embodiments of the second aspect, in some embodiments, the first information includes request information, or the first information includes request information and identification information of the terminal; the request information is used to determine the node device communicating with the terminal.

[0060] In combination with some embodiments of the second aspect, in some embodiments, the first information is carried based on at least one of the following: physical layer control signaling; high-layer control signaling; reference signal.

[0061] In combination with some embodiments of the second aspect, in some embodiments, the first information includes request information and identification information of the terminal, and is carried based on the reference signal; the reference signal carries the identification information of the terminal based on at least one of the following: cyclic shift, different cyclic shifts carry identification information of different terminals; time-frequency domain resources, different time-frequency domain resources carry identification information of different terminals.

[0062] In combination with some embodiments of the second aspect, in some embodiments, the method further includes: the node device sending a second signal, wherein the second signal carries feedback information of the first information.

[0063] In combination with some embodiments of the second aspect, in some embodiments, the method also includes: the node device sends a third signal, and when the quality parameter value of the third signal is less than or equal to a third threshold, terminates communication with the terminal; when the quality parameter value of the third signal is greater than the third threshold, maintains communication with the terminal.

[0064] In combination with some embodiments of the second aspect, in some embodiments, the resources for sending the first information are determined based on at least one of the following resources: pre-configured resources; a resource pool dedicated to the first information; and resources in a public resource pool for sending the first information.

[0065] In combination with some embodiments of the second aspect, in some embodiments, the quality parameter includes at least one of the following: received signal strength indication RSSI; reference signal received power RSRP; reference signal received quality RSRQ.

[0066] In combination with some embodiments of the second aspect, in some embodiments, the feedback information includes: confirmation response information, and / or identification information of the node device.

[0067] In a third aspect, an embodiment of the present disclosure proposes a communication method, which includes: when a first condition is met, the terminal sends first information.

[0068] In a fourth aspect, a terminal is provided, including: a transceiver module, configured to receive first information, where the first information is information sent by the terminal when a first condition is met.

[0069] In some embodiments, satisfying the first condition includes at least one of the following: the terminal receives a first signal, determines that the quality parameter value of the first signal is less than or equal to a first threshold, the first signal is a signal sent by the network device, and the quality parameter value of the first signal is determined by the terminal measuring the first signal; the terminal does not receive feedback information from the network device regarding the second information within the effective time, and the second information is sent by the terminal to the network device.

[0070] In some embodiments, satisfying the first condition includes that a quality parameter value of the first signal determined by the terminal is less than or equal to a first threshold; different quality parameter values ​​correspond to different first thresholds.

[0071] In some embodiments, satisfying the first condition further includes: the terminal receiving a first signal, and determining that a quality parameter value of the first signal is greater than or equal to a second threshold; wherein the first threshold is greater than the second threshold.

[0072] In some embodiments, the first information includes request information, or the first information includes request information and identification information of the terminal; the request information is used to determine a node device communicating with the terminal.

[0073] In some embodiments, the first information is carried based on at least one of the following: physical layer control signaling; higher layer control signaling; reference signal.

[0074] In some embodiments, the first information includes request information and identification information of the terminal, and is carried based on a reference signal; the reference signal carries the identification information of the terminal based on at least one of the following: cyclic shift, different cyclic shifts carry identification information of different terminals; time-frequency domain resources, different time-frequency domain resources carry identification information of different terminals.

[0075] In some embodiments, the transceiver module is further used to: receive a second signal, the second signal carries feedback information, and the feedback information is feedback information sent to the terminal by one or more node devices that receive the first information.

[0076] In some embodiments, the terminal further includes a processing module configured to determine a quality parameter value of the second signal; and select a first node device corresponding to a signal with a maximum quality parameter value among the second signals as a node device for communicating with the terminal.

[0077] In some embodiments, the transceiver module is further configured to: receive a third signal from the first node device, and determine a quality parameter value of the third signal.

[0078] In some embodiments, when the quality parameter value of the third signal is less than or equal to the third threshold, the processing module 6102 reselects a node device for communicating with the terminal.

[0079] In some embodiments, when the quality parameter value of the third signal is greater than a third threshold, the processing module 6102 maintains communication between the terminal and the first node device.

[0080] In some embodiments, the processing module is further configured to save a quality parameter value of the second signal received when the first information is sent for the first time, wherein the saved quality parameter value of the second signal is greater than a third threshold;

[0081] While saving the quality parameter value of the second signal received when the first information is sent for the first time, the processing module 6102 reselects the node device for communicating with the terminal in the following manner: based on the saved quality parameter value of the second signal, the second node device corresponding to the signal with the second largest quality parameter value in the second signal is selected as the node device for communicating with the terminal.

[0082] In some embodiments, the resources for sending the first information are determined based on at least one of the following resources: pre-configured resources; a resource pool dedicated to the first information; and resources in a public resource pool for sending the first information.

[0083] In some embodiments, the quality parameter includes at least one of the following: RSSI, RSRP, RSRQ.

[0084] In some embodiments, the feedback information includes: confirmation response information, and / or identification information of the node device.

[0085] In a fifth aspect, a node device is provided, including: a transceiver module, configured to receive first information, where the first information is information sent by a terminal when a first condition is met.

[0086] In some embodiments, the first condition is met, including at least one of the following: the quality parameter value of the first signal is less than or equal to the first threshold, the first signal is a signal sent by the network device, and the quality parameter value of the first signal is determined based on the terminal measuring the first signal; the network device does not send feedback information on the second information to the terminal within the effective time, and the second information is information sent by the network device to the terminal.

[0087] In some embodiments, satisfying the first condition includes: a quality parameter value of the first signal is less than or equal to a first threshold, and different quality parameter values ​​correspond to different first thresholds.

[0088] In some embodiments, satisfying the first condition further includes: a quality parameter value of the first signal is greater than or equal to a second threshold, wherein the first signal is sent by a network device, and the first threshold is greater than the second threshold.

[0089] In some embodiments, the first information includes request information, or the first information includes request information and identification information of the terminal; the request information is used to determine a node device communicating with the terminal.

[0090] In some embodiments, the first information is carried based on at least one of the following: physical layer control signaling; higher layer control signaling; reference signal.

[0091] In some embodiments, the first information includes request information and identification information of the terminal, and is carried based on a reference signal; the reference signal carries the identification information of the terminal based on at least one of the following: cyclic shift, different cyclic shifts carry identification information of different terminals; time-frequency domain resources, different time-frequency domain resources carry identification information of different terminals.

[0092] In some embodiments, the transceiver module is further configured to enable the node device to send a second signal, wherein the second signal carries feedback information of the first information.

[0093] In some embodiments, the transceiver module is further configured to: the node device sends a third signal, terminate communication with the terminal when a quality parameter value of the third signal is less than or equal to a third threshold, and maintain communication with the terminal when the quality parameter value of the third signal is greater than the third threshold.

[0094] In some embodiments, the resources for sending the first information are determined based on at least one of the following resources: pre-configured resources; a resource pool dedicated to the first information; and resources in a public resource pool for sending the first information.

[0095] In some embodiments, the quality parameter includes at least one of the following: RSSI, RSRP, RSRQ.

[0096] In some embodiments, confirmation response information, and / or identification information of the node device.

[0097] In a sixth aspect, a terminal is provided, comprising: one or more processors; wherein the terminal is used to execute the first aspect and any one of the communication methods in the first aspect.

[0098] In a seventh aspect, a node device is provided, comprising: one or more processors; wherein the node device is used to execute the second aspect and any one of the communication methods in the second aspect.

[0099] In an eighth aspect, a communication system is provided, comprising a terminal and a node device, wherein the terminal is configured to implement the first aspect and any one of the communication methods in the first aspect, and the node device is configured to implement the second aspect and any one of the communication methods in the second aspect.

[0100] In the ninth aspect, a storage medium is provided, which stores instructions. When the instructions are executed on a communication device, the communication device executes a communication method such as the first aspect and any one of the first aspect or the second aspect and any one of the second aspect.

[0101] In a tenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation manner of the first aspect or the second aspect.

[0102] In an eleventh aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first or second aspect.

[0103] In a twelfth aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first or second aspect.

[0104] It is understandable that the terminal, access network device, first network element, other network elements, core network device, communication system, storage medium, program product, computer program, chip, or chip system involved in each embodiment of the present disclosure are all used to perform the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding method and will not be repeated here.

[0105] The present disclosure provides communication methods, devices, equipment, and storage media. In some embodiments, the terms "communication method," "information processing method," and "communication method" are interchangeable; the terms "communication device," "information processing device," and "communication device" are interchangeable; and the terms "information processing system," "communication system," and "communication system" are interchangeable.

[0106] 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.

[0107] In each embodiment of the present disclosure, unless otherwise specified or provided for, the terms and / or descriptions between the embodiments are consistent and may be referenced by each other. The technical environments in different embodiments may be combined to form new embodiments based on their inherent logical relationships.

[0108] 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.

[0109] 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.

[0110] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0111] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0112] 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.

[0113] 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.

[0114] 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 example, if the description object is "information", then the "first information" and "the performance of each AI model" can be the same information or different information, and their contents can be the same or different.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0120] 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.

[0121] 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.

[0122] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0123] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0124] 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.

[0125] FIG1A is a schematic diagram showing a communication system architecture according to an embodiment of the present disclosure.

[0126] As shown in FIG. 1A , a communication system 100 includes a terminal 101 , a network device 102 , and a node device 103 .

[0127] 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.

[0128] 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 Wi-Fi system, but is not limited thereto.

[0129] 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.

[0130] 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.

[0131] In some embodiments, a core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0132] In some embodiments, the node device 103 may include at least one of a terminal, a node, or a network device.

[0133] In some embodiments, the node may include, for example, at least one of an intermediate node, or an auxiliary node.

[0134] The intermediate node includes, for example, at least one of the following: a relay device, an integrated access and backhaul node (IAB Node), a UE, or a repeater, and other devices with A-IoT capabilities.

[0135] The auxiliary node includes, for example, at least one of the following: a relay, an IAB Node, a UE, a repeater, or other devices with A-IoT capabilities.

[0136] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0137] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1A , or a portion thereof, but are not limited thereto. The entities shown in FIG1A are illustrative only. The communication system may include all or part of the entities shown in FIG1A , or may include other entities other than those shown in FIG1A . The number and form of the entities may be arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0138] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0139] The Ambient Internet of Things (A-IoT) is a new IoT technology. Compared to traditional IoT technologies, the number of terminals used in A-IoT systems (hereinafter referred to as A-IoT terminals) is much larger.

[0140] Exemplarily, an A-IoT terminal includes, for example, an A-IoT user equipment (UE), an A-IoT device, and a device with an A-IoT function represented by an A-IoT tag.

[0141] In some embodiments, A-IoT is used to inventory a large number of items. This means that when certain trigger conditions are met, corresponding data can be reported, including, for example, the following scenarios:

[0142] A-IoT devices report Evolved Packet Core Network (EPC) codes or sensing scenarios to access network devices (e.g., base stations);

[0143] A-IoT devices report EPC codes to intermediate nodes or perform sensing with intermediate nodes;

[0144] A-IoT devices report EPC codes to terminals or perform sensing with intermediate nodes.

[0145] In some embodiments, A-IoT devices have a simpler structure and lower hardware and maintenance costs than Narrow Band Internet of Things (NB-IoT) devices.

[0146] In some embodiments, an A-IoT terminal may or may not include a power supply device.

[0147] In some embodiments, A-IoT terminals can be divided into the following three types: -A), -B), and -C):

[0148] Type A devices operate based on backscatter and do not support energy storage. Understandably, since these devices do not support energy storage, they must receive wireless (Cue Wireless, CW) signals to charge the device and activate the internal receiving and processing modules to encode and modulate the signaling and / or data that the A-IoT device needs to upload.

[0149] Type B devices use the backscatter mechanism and support energy storage, but their storage capacity is limited. While their structural complexity and power consumption are higher than those of type A devices, they remain relatively low.

[0150] Type C devices support energy storage and do not need to receive CW signals to charge the device. They use their own stored energy for active transmission and do not work based on the backscatter mechanism. Type C devices can also amplify the transmitted information.

[0151] It should be noted that the backscatter mechanism means that the A-IoT device reflects the received CW and loads the signaling and / or data to be transmitted onto the reflected wave and sends it out. The reflected wave and the CW have the same frequency or a certain frequency offset.

[0152] In some embodiments, radio frequency identification (RFID) technology uses direct communication between readers and tags, with a maximum read / write distance (also known as communication range or coverage), typically 10 meters. However, the current maximum read / write distance does not meet the communication distance requirements of A-IoT devices.

[0153] In some embodiments, coverage of A-IoT devices can be measured based on communication distance. Typically, the maximum indoor communication distance between an A-IoT device and other communication devices is 10 to 50 meters, and the maximum outdoor communication distance between an A-IoT device and other communication devices is 50 to 500 meters. Communication between an A-IoT device and other communication network devices includes at least one of the following:

[0154] Communication between A-IoT devices and access network equipment (e.g., base stations);

[0155] Communication between A-IoT devices and nodes (e.g., intermediate nodes or auxiliary nodes);

[0156] Communication between A-IoT devices and terminals.

[0157] In some embodiments, in order to increase the communication distance between the A-IoT device and the access network device (e.g., a base station), the networking mode shown in FIG. 1B and / or FIG. 1C is generally adopted for communication.

[0158] For example, FIG1B is a schematic diagram of a networking mode architecture according to an embodiment of the present disclosure. As shown in FIG1B , a base station (BS) is connected to an intermediate node, and the two communicate uplink or downlink. The intermediate node is connected to an A-IoT device, and the two communicate uplink or downlink. The base station and the A-IoT device do not directly communicate uplink or downlink.

[0159] Optionally, the intermediate node includes: a relay device, an integrated access and backhaul node (IAB Node), a UE or a repeater, and other devices with A-IoT capabilities.

[0160] 1C is a schematic diagram of a networking mode architecture according to an embodiment of the present disclosure. As shown in FIG1C , a base station (BS) is connected to an A-IoT device through an assisting node, and the two devices perform uplink communication.

[0161] Optionally, the auxiliary node includes: a device with A-IoT capability, such as a relay, an IAB Node, a UE or a repeater.

[0162] As can be seen, in all of the above networking modes, communication between A-IoT devices and base stations requires nodes (intermediate nodes or auxiliary nodes). However, how to select and determine the nodes is a problem that needs to be solved.

[0163] It should be noted that the node device 103 may include at least one of a network device, a terminal, or a node. A node may be, for example, a relay, IAB node, UE, or repeater, or other A-IoT-capable device. Therefore, in some embodiments, the terms "assistant node device," "node device," "node," and "intermediate node device" may be used interchangeably to represent one or more A-IoT-capable devices.

[0164] FIG2 is a schematic diagram illustrating an interaction of a communication method according to an embodiment of the present disclosure. As shown in FIG2 , the present disclosure embodiment relates to a communication method for use in a communication system 100, the method comprising:

[0165] In step S2101 , the terminal 101 communicates and interacts with the network device 102 .

[0166] In some embodiments, the terminal 101 communicates with the network device 102 , for example, the network device 102 sends a first signal to the terminal 101 .

[0167] In some embodiments, the terminal 101 communicates and interacts with the network device. For example, the terminal sends second information to the network device 102 , and the network device sends feedback information of the second information to the terminal 101 based on the second information.

[0168] In some embodiments, the device that communicates and interacts with the terminal 101 in step S2101 is not limited to the network device 102, but can also be other node devices, that is, the terminal can communicate with the network device through the node device.

[0169] In some embodiments, step S2101 may be omitted.

[0170] Step S2102: When the first condition is met, the terminal 101 sends the first information to the node device 103.

[0171] In some embodiments, the node device 103 may include one or more node devices.

[0172] In some embodiments, the node device 103 receives the first information sent by the terminal 101 when the first condition is met.

[0173] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0174] 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.

[0175] In some embodiments, the terminal 101 is a device having A-IOT capability and having a communication association with the node device 103, for example including: an A-IoT device.

[0176] In some embodiments, "terminal" and "A-IOT device" can be interchangeable.

[0177] Optionally, when the first condition is met, the terminal 101 sends first information, where the first information is used to discover (or find) a node device that communicates with the A-IOT device.

[0178] Optionally, when the first condition is met, the terminal 101 sends first information to the node device 103, where the first information is used to search for a node that can communicate with the terminal 101 in one or more node devices.

[0179] It is understandable that the process of searching for (or discovering) a node device is initiated when the signal quality of the communication interaction between the terminal 101 and the network device 102 is poor. In step S2101, when the signal quality of the communication interaction between the terminal 101 and other node devices is poor, the process of searching for (or discovering) a node device may also be initiated.

[0180] For ease of understanding, the following embodiments will introduce the process of initiating a node device search through a scenario of communication and interaction between the terminal 101 and the network device 102.

[0181] In some embodiments, the words "discover," "find," "determine," or "request" may be used interchangeably.

[0182] In some embodiments, terms such as "first information", "discovery information", "request information", "auxiliary request information" and the like can be used interchangeably.

[0183] Exemplarily, the first information may be referred to as discovery information or assistance request information. When the first condition is met, the terminal 101 triggers a discovery process of the node device.

[0184] In some embodiments, the first information includes request information, or request information and identification information of the terminal 101 , wherein the request information is used to request the node to communicate with the terminal 101 .

[0185] Exemplarily, the request information is used to request one or more node devices to communicate with the terminal 101.

[0186] It is understandable that by requesting communication from one or more node devices, it is possible to determine which node devices can be selected as the first node device by the terminal 101. For example, the terminal 101 uses the first information to find N node devices (where N is an integer greater than 1 and less than or equal to M) with which to communicate among M node devices (where M is an integer greater than 1). Further, the terminal can determine the first node device among the N node devices based on a preset rule (for example, selecting the node device with the best signal quality as the first node device).

[0187] In some embodiments, the first information is carried on at least one of the following bearers: physical layer control signaling, higher layer control signaling, and a reference signal.

[0188] For example, physical layer control signaling is used to carry the request information. Physical layer control signaling is used to carry the request information and the identification information of the terminal 101.

[0189] In some embodiments, when the first information includes request information and identification information of terminal 101 and is carried based on a reference signal, the reference signal carries the identification information of terminal 101 based on at least one of the following: cyclic shift, and / or time-frequency domain resources.

[0190] Optionally, the identification information of the terminal 101 is carried based on the cyclic shift, including: different cyclic shifts carry identification information of different terminals 101.

[0191] Optionally, carrying identification information of the terminal 101 based on time-frequency domain resources includes: different time-frequency domain resources carry identification information of different terminals 101.

[0192] In some embodiments, the resources used by the terminal 101 to send the first information are determined based on at least one of the following resources: pre-configured resources; a resource pool dedicated to the first information; and resources in a public resource pool used to send the first information.

[0193] It is understandable that the above resources may be pre-configured based on network devices, and the network devices that perform resource configuration may be one or more network devices in the node device 103 , or may be other network devices except the node device 103 .

[0194] In some embodiments, the first condition is satisfied, including at least one of the following -a) or -b):

[0195] a) A quality parameter value of a first signal received by the terminal 101 is less than or equal to a first threshold, where the first signal is a signal sent by a network device currently communicating with the terminal 101.

[0196] -b) Terminal 101 does not receive feedback information from the network device regarding the second information within the valid time, and the second information is sent by terminal 101 to the network device currently communicating with terminal 101. It can be understood that satisfying the first condition can be considered as, in the scenario where terminal 101 and network device 102 are communicating with each other, the communication quality of the communication link between terminal 101 and network device 102 satisfies a certain trigger condition.

[0197] For example, for -a):

[0198] It can be understood that, for case -a), it can be understood that, in the scenario where the terminal 101 communicates with the network device 102, when the quality parameter of the first signal sent by the network device 102 received by the terminal 101 is less than or equal to the first threshold (for example, the quality parameter of the first signal measured by the terminal 101 is less than or equal to the first threshold), in some embodiments, it can be understood that the quality of the communication link between the terminal 101 and the network device (network device 102) with which it has a communication association does not meet the preset requirements. That is, when the quality of the above-mentioned communication link does not meet the preset requirements, the first condition is met. Therefore, when the first condition is met, the terminal 101 determines a node device that can be used for communication in the node device 103 as a node (intermediate node or auxiliary node), thereby communicating.

[0199] In some embodiments, the quality parameter includes: Received Signal Strength Indication (RSSI), Reference Signal Received Power (RSRP), or Reference Signal Received Quality (RSRQ).

[0200] It is understandable that the quality parameter value may also be understood as: an RSSI value, an RSRP value, or an RSRQ value, etc.

[0201] In some embodiments, different quality parameter values ​​correspond to different first thresholds.

[0202] For example, the RSRP value corresponds to the first RSRP threshold, the RSSI value corresponds to the first RSSI threshold, and the RSRQ value corresponds to the first RSRQ threshold. The first RSRP threshold, the first RSSI threshold, and the first RSRQ threshold can be understood as different first thresholds corresponding to different quality parameter values, and the first RSRP threshold, the first RSSI threshold, and the first RSRQ threshold each correspond to a different numerical range.

[0203] In some embodiments, terminal 101 may determine the quality of the first signal by measuring a value of a quality parameter of the first signal.

[0204] In some embodiments, the terminal 101 may determine the quality of the first signal by measuring a value of a quality parameter among multiple quality parameters of the first signal.

[0205] For example, the terminal 101 measures the RSSI value of the first signal and determines the quality of the first signal based on the relationship between the RSSI value of the first signal and the first RSSI threshold (for example, if the RSSI value of the first signal is less than the first RSSI threshold, it is determined that the quality of the first signal does not meet the requirements, etc.).

[0206] In some embodiments, terminal 101 may determine the quality of the first signal by measuring values ​​of multiple quality parameters among the quality parameters of the first signal.

[0207] For example, the terminal 101 measures the RSSI value and the RSRP value of the first signal and determines the quality of the first signal based on a preset rule.

[0208] The preset rule stipulates that when the RSSI value of the first signal is greater than the first RSSI threshold and the RSRP value is greater than the first RSRP threshold, it is determined that the quality of the first signal meets the requirement. For another example, the terminal 101 measures the RSSI value, RSRP value, and RSRQ value of the first signal and determines the quality of the first signal based on the preset rule.

[0209] Among them, the preset rule may stipulate that: the values ​​of some quality parameters of the multiple quality parameters in the first signal are greater than or equal to the corresponding first threshold values, and the quality of the first signal is determined to meet the requirements. For example, the preset rule stipulates that, for the RSSI value, RSRP value, and RSRQ value of the first signal, the RSSI value of the first signal is greater than or equal to the first RSSI threshold value, and the RSRP value of the first signal is greater than or equal to the first RSRP threshold value, and the quality of the first signal is determined to meet the requirements. Or the preset rule stipulates that, for the RSSI value, RSRP value, and RSRQ value of the first signal, the RSSI of the first signal is greater than or equal to the first RSSI threshold value, and the quality of the first signal is determined to meet the requirements.

[0210] The preset rule may further provide that: if all the values ​​of the multiple quality parameters in the first signal are greater than or equal to their respective first thresholds, the quality of the first signal is determined to meet the requirements. For example, the preset rule provides that, with respect to the RSSI value, RSRP value, and RSRQ value of the first signal, the quality of the first signal is determined to meet the requirements only if the RSSI value of the first signal is greater than or equal to the first RSSI threshold, the RSRP value of the first signal is greater than or equal to the first RSRP threshold, and the RSRQ value of the first signal is greater than or equal to the first RSRQ threshold.

[0211] For another example, the terminal 101 measures the RSSI value and the RSRQ value of the first signal and determines the quality of the first signal based on a preset rule.

[0212] For another example, the terminal 101 measures the RSRQ value and the RSRP value of the first signal and determines the quality of the first signal based on a preset rule.

[0213] In some embodiments, the first threshold is determined in at least one of the following ways: based on pre-configuration information sent by the network device, the pre-configuration information is used to configure the first threshold; based on predefined regulations; based on third information sent by the network device, the third information is used to indicate the first threshold (for example, the third information is indication information).

[0214] It should be noted that the network device that sends the pre-configuration information may generally refer to a network device that can send pre-configuration information, including the network device referred to in the network device 102 in the embodiment of Figure 2, and / or network devices other than the network device referred to by the network device 102.

[0215] In some embodiments, satisfying the first condition further includes: a quality parameter value of the first signal received by the terminal 101 is greater than or equal to a second threshold.

[0216] Exemplarily, taking terminal 101 as a passive A-IOT device, the first condition is met, which includes, in addition to the quality parameter value of the first signal received being less than or equal to the first threshold, also including: the quality parameter value of the first signal received by terminal 101 is greater than or equal to the second threshold.

[0217] Optionally, a passive A-IOT device can be understood as the above-mentioned -A) type device, or -B) type device.

[0218] That is, when the terminal 101 is a type -A) device or a type -B) device, satisfying the first condition further includes: the quality parameter value of the first signal received by the terminal 101 is greater than or equal to the second threshold.

[0219] It is understandable that since the passive A-IOT device charges the device based on CW, the passive A-IOT device is activated to work. Therefore, only when the energy obtained by the passive A-IOT device based on CW exceeds a certain threshold can the internal module be activated to work. Based on this, the second threshold is set, which can be understood as the minimum energy threshold for the passive A-IOT to work.

[0220] It can be understood that the second threshold corresponding to the -A) type device and the second threshold corresponding to the -B) type device may be the same or different.

[0221] For another example, regarding -b):

[0222] It is understood that for situation -b), it can be understood that, in a scenario where terminal 101 and network device 102 are communicating and interacting, terminal 101 sends second information to a communication-associated network device, and does not receive feedback information from the network device regarding the second information within the valid time. In some embodiments, it can be understood that the communication between terminal 101 and the network device is interrupted or the delay exceeds the preset requirements. That is, when the communication between terminal 101 and the network device is interrupted or the delay exceeds the preset requirements, the first condition is triggered.

[0223] In some embodiments, for case -b), before sending the first information, the terminal 101 further includes: the terminal 101 sends the second information to the network device with which it has a communication association.

[0224] Optionally, the second information includes, for example, at least one of data, control information or a random number.

[0225] 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", "field", "symbol", "symbol", "code element", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0226] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0227] 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.

[0228] Step S2103 : The node device 103 sends a second signal to the terminal 101 .

[0229] In some embodiments, the node device 103 that receives the first information sends a second signal to the terminal 101 .

[0230] In some embodiments, the second signal carries feedback information, and the feedback information is feedback information sent to the terminal 101 by the node device 103 that receives the first information.

[0231] It is understood that in step S2101, node device 103 is one or more A-IoT-capable devices. Terminal 101 sending a first signal to node device 103 is understood as terminal 101 sending first information to the one or more A-IoT-capable devices. The device among the one or more A-IoT-capable devices that receives the first information can be understood as the node device among node device 103 that receives the first information.

[0232] Optionally, the feedback information includes: confirmation information (ACK), and / or identification information of the node device.

[0233] In some embodiments, the terminal 101 receives feedback information sent by the node device 103 .

[0234] In some embodiments, the node device 103 sends feedback information to the A-IOT device.

[0235] In some embodiments, the A-IOT device receives feedback information sent by the node device 103 .

[0236] Optionally, the node device 103 sends feedback information to the terminal 101 based on the received first information.

[0237] It can be understood that the node device 103 sends feedback information to the terminal based on the first information sent by the terminal 101, so that the terminal 101 can determine the first node device among the node devices that have sent feedback information.

[0238] Step S2104: Terminal 101 determines the first node device.

[0239] In some embodiments, when the feedback information is carried by the second signal, after the terminal 101 receives the feedback information, the terminal 101 determines the quality parameter value of the second signal (for example, the terminal 101 measures the second signal to obtain the quality parameter value of the second signal), and determines the first node device based on the quality parameter of the second signal.

[0240] In some embodiments, the feedback information is, for example, positive confirmation information (Acknowledgement, ACK).

[0241] In some embodiments, terminal 101 may determine the quality of the second signal by measuring a value of a certain quality parameter among the quality parameters of the second signal.

[0242] For example, the terminal 101 measures the RSSI value of the first signal and determines the quality of the first signal based on the relationship between the RSSI value of the second signal and the third RSSI threshold (for example, if the RSSI value of the second signal is less than the third RSSI threshold, it is determined that the quality of the second signal does not meet the requirements, etc.).

[0243] In some embodiments, terminal 101 may determine the quality of the first signal by measuring values ​​of multiple quality parameters among the quality parameters of the second signal.

[0244] For example, the terminal 101 measures the RSSI value and the RSRP value of the second signal and determines the quality of the second signal based on preset rules (for example, the preset rules stipulate that when the RSSI value of the second signal is greater than a third RSSI threshold and the RSRP value is greater than a third RSRP threshold, it is determined that the quality of the first signal meets the requirements, etc.).

[0245] For another example, the terminal 101 measures the RSSI value, the RSRP value, and the RSRQ value of the second signal and determines the quality of the second signal based on a preset rule.

[0246] For another example, the terminal 101 measures the RSSI value and the RSRQ value of the second signal and determines the quality of the second signal based on a preset rule.

[0247] For another example, the terminal 101 measures the RSRQ value and the RSRP value of the second signal and determines the quality of the first signal based on a preset rule.

[0248] Optionally, determining the first node device based on the second signal quality parameter includes, for example, selecting a node device with a maximum second signal quality parameter value as the node device communicating with the terminal 101 (ie, the first node device).

[0249] It is understandable that the node device with the largest quality parameter value of the second signal is selected as the first node device. That is, the terminal 101 selects the node device with the best signal quality from the node devices (one or more node devices) that send the second signal in the node device 103 as the first node device.

[0250] Optionally, in a case where the maximum second signal quality parameter value corresponds to multiple node devices, the terminal 101 selects one of the node devices as the first node device based on its own implementation.

[0251] In some embodiments, when determining the first node device, the terminal 101 also retains information of other node devices, where the other node devices are node devices that meet the requirement that the quality parameter value of the second signal is greater than a third threshold.

[0252] It is understood that by screening the quality parameter values ​​of the second signal of multiple node devices, other node devices whose second signal quality meets the preset requirements can be screened out as candidate devices for the first node device. In this way, in some embodiments, when it is necessary to switch the first node device, a new first node device can be determined from the other node devices based on the retained information of the other node devices.

[0253] In some embodiments, after determining the first node device, the terminal 101 may further reselect the first node device.

[0254] It is understood that after determining the first node device, the terminal 101 may determine whether to reselect the first node device based on the current communication quality. For example, after determining the first node device, if the real-time communication quality between the first node device and the terminal 101 no longer meets the requirements, the terminal 101 reselects the first node device.

[0255] Optionally, the terminal 101 receives a third signal from the first node device.

[0256] It can be understood that, in this case, the terminal 101 has determined the first node device from the node device 103 and established a communication connection. The third signal can be understood as a signal for communication between the terminal 101 and the node device.

[0257] Optionally, when the quality parameter value of the third signal is less than or equal to a third threshold, a node device for communicating with the terminal 101 is reselected.

[0258] It can be understood that when the quality parameter value of the third signal is less than or equal to the third threshold, it can be understood that the communication quality between the terminal 101 and the first node device is poor. In this case, the first node device is reselected.

[0259] Optionally, when the quality parameter value of the third signal is greater than a third threshold, the terminal 101 is kept communicating with the first node device.

[0260] It can be understood that when the quality parameter value of the third signal is greater than the third threshold, it can be understood that the communication quality between the terminal 101 and the first node device is good. In this case, the first node device is not reselected.

[0261] In some embodiments, the terminal 101 may reselect the first node device by the following two methods: 1) or 2)

[0262] 1) The first information is not resent, and the reselected second node device is determined as the node device for communicating with the terminal 101 based on the pre-stored node device information.

[0263] 2) Resending the first information, and determining the reselected second node device as the node device for communicating with the terminal 101.

[0264] Regarding 1):

[0265] In some embodiments, a quality parameter value of the second signal received when the first information is sent for the first time is saved, wherein the saved quality parameter value of the second signal is greater than a third threshold.

[0266] It is understandable that the third threshold is a threshold set for the quality parameter of the second signal. The quality parameter value can also be understood as: RSSI value, RSRP value or RSRQ value, etc.

[0267] In some embodiments, different quality parameter values ​​correspond to different third thresholds.

[0268] Exemplarily, the third RSRP value corresponds to a third RSRP threshold, the RSSI value corresponds to a third RSSI threshold, and the RSRQ value corresponds to a third RSRQ threshold. The third RSRP threshold, the third RSSI threshold, and the third RSRQ threshold can be understood as different third thresholds corresponding to different quality parameter values. Based on this, the communication link quality between each node device and the terminal 101 obtained when the first information is sent for the first time can be obtained, and then the first node device after reselection can be determined based on the communication link quality.

[0269] Exemplarily, reselecting a node device for communicating with terminal 101 includes: terminal 101 selecting a node device corresponding to a signal with the second largest quality parameter value in the second signal as the node device for communicating with terminal 101 based on the saved quality parameter value of the second signal.

[0270] It can be understood that based on the stored information, the node device with the second best communication link quality between each node device and the terminal 101 obtained when the first information is sent for the first time is determined and used as the first node device of the terminal 101.

[0271] Regarding 2):

[0272] It can be understood that 2) is to reselect the first node device based on the first information.

[0273] In some embodiments, the terminal 101 may repeat the relevant embodiments of steps S2102 to S2103 to reselect the first node device.

[0274] Exemplarily, in case 2), the re-received first node device is determined in the following manner: the terminal 101 resends the first information; the terminal 101 re-receives the second signal, determines the quality parameter value of the re-received second signal, and the terminal 101 selects the second node device corresponding to the signal with the maximum quality parameter value in the re-received second signal as the first node device.

[0275] Optionally, the second signal re-received by the terminal 101 carries feedback information, and the feedback information is feedback information re-sent by the received node device 103 .

[0276] 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.

[0277] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2104. For example, step S2101 may be implemented as an independent embodiment, step S2102 may be implemented as an independent embodiment, step S2101 + step S2102 may be implemented as an independent embodiment, and step S2101 + step S2102 + step S2103 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0278] In some embodiments, step S2101, step S2102, and step S2103 may be executed in an interchangeable order or simultaneously.

[0279] In some embodiments, step S2101, step S2102, and step S2103 may be executed in an interchangeable order or simultaneously.

[0280] In some embodiments, step S2101, step S2102, and step S2104 may be executed in an interchangeable order or simultaneously.

[0281] In some embodiments, step S2101, step S2103, and step S2104 may be executed in an interchanged order or simultaneously.

[0282] In some embodiments, step S2102, step S2103, and step S2104 may be executed in an interchanged order or simultaneously.

[0283] FIG3A is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a communication method, which includes:

[0284] Step S3101: Send the first information when the first condition is met.

[0285] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0286] Step S3102, receiving a second signal.

[0287] The optional implementation of step S3102 can refer to the optional implementation of step S2102 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0288] Step S3103: Determine the first node device.

[0289] The optional implementation of step S3103 can refer to the optional implementation of step S2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0290] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3103. For example, step S3101 may be implemented as an independent embodiment, step S3102 may be implemented as an independent embodiment, step S3101 + step S3102 may be implemented as an independent embodiment, and step S3101 + step S3102 + step S3103 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0291] In some embodiments, step S3101 and step S3102 may be executed in an interchanged order or simultaneously.

[0292] In some embodiments, step S3102 and step S3103 may be executed in an interchanged order or simultaneously.

[0293] In some embodiments, step S3101 and step S3103 may be executed in an interchanged order or simultaneously.

[0294] In some embodiments, step S3101 and step S3102 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0295] In some embodiments, step S3101 and step S3103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0296] In some embodiments, step S3102 and step S3103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0297] FIG3B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to a communication method, and the method includes:

[0298] Step S3201: Send the first information when the first condition is met.

[0299] The optional implementation of step S3201 can be found in the optional implementation of step S2101, step S2102 and step S2103 in Figure 2, the optional implementation of step S3101, step S3102 and step S3103 in Figure 3A, and other related parts of the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0300] In some embodiments, the first information is used to find a node device communicating with the terminal, and the node device includes one or more node devices.

[0301] In some embodiments, the terminal receives a first signal and determines that the quality parameter value of the first signal is less than or equal to a first threshold, and the first signal is a signal sent by the network device; the terminal does not receive feedback information from the network device regarding the second information within the effective time, and the second information is sent by the terminal to the network device.

[0302] In some embodiments, satisfying the first condition includes that a quality parameter value of the first signal determined by the terminal is less than or equal to a first threshold; different quality parameter values ​​correspond to different first thresholds.

[0303] In some embodiments, the first threshold is determined in at least one of the following ways: based on pre-configuration information sent by the node device, the pre-configuration information is used to configure the first threshold; based on predefined regulations; based on third information sent by the node device, the third information is used to indicate the first threshold.

[0304] In some embodiments, satisfying the first condition further includes: the terminal receiving a first signal, and determining that a quality parameter value of the first signal is greater than or equal to a second threshold; wherein the first threshold is greater than the second threshold.

[0305] In some embodiments, the first information includes request information, or the first information includes request information and identification information of the terminal; the request information is used to determine a node device communicating with the terminal.

[0306] In some embodiments, the first information is carried based on at least one of the following: physical layer control signaling; higher layer control signaling; reference signal.

[0307] In some embodiments, the first information includes request information and identification information of the terminal, and is carried based on a reference signal; the reference signal carries the identification information of the terminal based on at least one of the following: cyclic shift, different cyclic shifts carry identification information of different terminals; time-frequency domain resources, different time-frequency domain resources carry identification information of different terminals.

[0308] In some embodiments, the method also includes: the terminal receives a second signal and determines a quality parameter value of the second signal, the second signal carries feedback information, and the feedback information is feedback information sent to the terminal by one or more node devices that receive the first information. The terminal selects the first node device corresponding to the signal with the maximum quality parameter value in the second signal as the node device for communicating with the terminal.

[0309] In some embodiments, the method further includes: receiving a third signal from the first node device, determining a quality parameter value of the third signal; in response to the quality parameter value of the third signal being less than or equal to a third threshold, reselecting a node device for communicating with the terminal; or, in response to the quality parameter value of the third signal being greater than the third threshold, maintaining communication between the terminal and the first node device.

[0310] In some embodiments, reselecting a node device for communicating with a terminal includes: resending a first message; the terminal re-receiving a second signal, determining a quality parameter value of the re-received second signal, the re-received second signal carrying feedback information, the feedback information being feedback information sent to the terminal by one or more node devices that receive the re-sent first message; the terminal selects a second node device corresponding to a signal with the maximum quality parameter value in the re-received second signal as the node device for communicating with the terminal.

[0311] In some embodiments, the method also includes: saving the quality parameter value of the second signal received when the first information is sent for the first time, wherein the saved quality parameter value of the second signal is greater than a third threshold; reselecting a node device for communicating with the terminal, including: the terminal selects the second node device corresponding to the signal with the second largest quality parameter value in the second signal based on the saved quality parameter value of the second signal, as the node device for communicating with the terminal.

[0312] In some embodiments, resources used by the terminal to send the first information are determined based on at least one of the following resources: pre-configured resources; a resource pool dedicated to the first information; and resources in a public resource pool used to send the first information.

[0313] In some embodiments, the quality parameter includes at least one of the following: received signal strength indication RSSI; reference signal received power RSRP; reference signal received quality RSRQ.

[0314] In some embodiments, the feedback information includes: confirmation response information, and / or identification information of the node device.

[0315] FIG4A is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4A , the embodiment of the present disclosure relates to a communication method, and the method includes:

[0316] Step S4101, receiving first information.

[0317] In some embodiments, the first information is information sent by the terminal when a first condition is met, wherein the first information is used to determine a network device communicating with the terminal, and the network device is a network device communicating with the terminal based on the first information.

[0318] The optional implementation of step S4101 can refer to the optional implementation of step S2101 in Figure 2, the optional implementation of step S3101 in Figure 3A and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0319] Step S4102: Send a second signal.

[0320] The optional implementation of step S4102 can refer to the optional implementation of step S2102 in Figure 2, the optional implementation of step S3102 in Figure 3A and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.

[0321] The communication method involved in the embodiments of the present disclosure may include at least one of steps S4101 and S4102. For example, step S4101 may be implemented as an independent embodiment, step S4102 may be implemented as an independent embodiment, and step S4101 + step S4102 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0322] In some embodiments, step S4101 and step S4102 may be executed in an interchanged order or simultaneously.

[0323] In some embodiments, step S4101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0324] In some embodiments, step S4102 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0325] FIG4B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4B , the embodiment of the present disclosure relates to a communication method, and the method includes:

[0326] Step S4201, receiving first information.

[0327] In some embodiments, the first information is used to find a node device communicating with the terminal, and the node device includes one or more node devices.

[0328] The optional implementation of step S4101 can be found in the optional implementation of step S2101 in Figure 2, step S3101 in Figure 3A, the optional implementation of step S4101 in Figure 4A and other related parts in the embodiments involved in Figures 2, 3A and 4A, which will not be repeated here.

[0329] In some embodiments, the first condition is met, including at least one of the following: the quality parameter value of the first signal is less than or equal to the first threshold, the first signal is a signal sent by the network device, and the quality parameter value of the first signal is determined based on the terminal measuring the first signal; the network device does not send feedback information on the second information to the terminal within the effective time, and the second information is information sent by the network device to the terminal.

[0330] In some embodiments, satisfying the first condition includes: a quality parameter value of the first signal is less than or equal to a first threshold, and different quality parameter values ​​correspond to different first thresholds.

[0331] In some embodiments, satisfying the first condition further includes: a quality parameter value of the first signal is greater than or equal to a second threshold, wherein the first signal is sent by a node device, and the first threshold is greater than the second threshold.

[0332] In some embodiments, the first information includes request information, or the first information includes request information and identification information of the terminal; the request information is used to determine a node device communicating with the terminal.

[0333] In some embodiments, the first information is carried based on at least one of the following: physical layer control signaling; higher layer control signaling; reference signal.

[0334] In some embodiments, the first information includes request information and identification information of the terminal, and is carried based on a reference signal; the reference signal carries the identification information of the terminal based on at least one of the following: cyclic shift, different cyclic shifts carry identification information of different terminals; time-frequency domain resources, different time-frequency domain resources carry identification information of different terminals.

[0335] In some embodiments, the method further includes: the node device sending a second signal, wherein the second signal carries feedback information of the first information.

[0336] In some embodiments, the node device sends a third signal, and when the quality parameter value of the third signal is less than or equal to a third threshold, terminates communication with the terminal; when the quality parameter value of the third signal is greater than the third threshold, maintains communication with the terminal.

[0337] In some embodiments, the resources for sending the first information are determined based on at least one of the following resources: pre-configured resources; a resource pool dedicated to the first information; and resources in a public resource pool for sending the first information.

[0338] In some embodiments, the quality parameter includes at least one of the following: RSSI; RSRP; RSRQ.

[0339] In some embodiments, the feedback information includes: confirmation response information, and / or identification information of the node device.

[0340] FIG5 is an interactive diagram of a task processing method according to an embodiment of the present disclosure. As shown in FIG5 , the present disclosure embodiment relates to a communication method, the method including:

[0341] Step S5101: Send the first information when the first condition is met.

[0342] In some embodiments, the first information is used to determine a network device communicating with the terminal.

[0343] The optional implementation of step S5101 can refer to the optional implementation of step S2101, step S2102, step S2103 and step S2104 in Figure 2, and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0344] In some embodiments, the above method may include the method described in the above embodiments of the communication system side, terminal side, network device side, etc., which will not be repeated here.

[0345] In some embodiments, the embodiments of the present disclosure also propose a communication method for improving the coverage of network devices and increasing the communication distance between network devices and A-IOT devices.

[0346] In some embodiments, the first network device is discovered in the following manner, and the A-IOT device communicates with the first network device, thereby improving the communication distance between the network device and the A-IOT device.

[0347] Optionally, the first network device may be at least one of an access network device, an intermediate node, or an auxiliary node.

[0348] In some embodiments, the first network device is an A-IOT device determined from one or more network devices.

[0349] In some embodiments, the A-IOT device is triggered to discover (or determine) the first network device based on one or more of the following conditions:

[0350] 1) When the coverage between the network device and the A-IOT device is limited, the A-IOT device triggers the discovery process of the first network device.

[0351] 2) When the A-IOT device sends information to the network device, but does not receive any feedback from the network device within the valid time.

[0352] Regarding 1):

[0353] In some embodiments, when the A-IOT device measures the RSSI value or RSRP value of the received signal, and the measured value is less than threshold 1 and higher than threshold 2, the A-IOT device triggers a discovery process for the first network device.

[0354] Optionally, the threshold 1 is preconfigured or predefined by the network device or is dynamically indicated by control information.

[0355] Optionally, threshold 2 is determined based on the implementation of the A-IOT device itself.

[0356] Optionally, threshold 2 is preconfigured or predefined by the network device or dynamically indicated by control information.

[0357] It can be understood that threshold 2 is introduced for -A) type devices and -B) type devices. Threshold 2 is the minimum energy threshold for charging the A-IOT device and making the A-IOT device work, and for -A) type devices and -B) type devices, the value of threshold 2 can be the same or different. -C) type devices do not require threshold 2.

[0358] Optionally, threshold 1 and threshold 2 are different for measuring RSSI or measuring RSRP value.

[0359] In some embodiments, when the A-IOT device measures the RSSI value or RSRP value of the received signal and the measured value is less than a threshold value 1, the A-IOT device triggers a discovery process of the first network device.

[0360] Optionally, the threshold 1 is preconfigured or predefined by the network device or is dynamically indicated by control information.

[0361] Optionally, threshold 1 and threshold 2 are different for measuring RSSI or measuring RSRP value.

[0362] Regarding 2):

[0363] In some embodiments, when the A-IOT device sends data or control information or a random number to the network device, but does not receive feedback information (such as confirmation information ACK) from the network device within the effective time T, the A-IOT device triggers the discovery process of the first network device.

[0364] In some embodiments, the target node is determined based on:

[0365] When one or more of the above conditions are met, the A-IOT device triggers a discovery process of the first network device, and the A-IOT device sends a discovery message (or an assistance request message), or the A-IOT device sends a discovery message and identification (ID) information of the A-IOT device;

[0366] After receiving a discovery message (or assistance request message), the A-IOT-capable device feeds back an acknowledgment message (such as ACK) and / or an ID message;

[0367] The A-IOT device measures the RSSI or RSRP value of the received signal, selects the network devices corresponding to the signals whose RSSI measurement value or RSRP measurement value is greater than or equal to a pre-configured threshold value of 3 as candidate first network devices, and sorts the RSSI measurement value or RSRP measurement value from large to small, or from small to large, and the RSSI measurement value or RSRP measurement value corresponds to the device ID (such as destination ID) information, to determine a candidate list of available first network devices;

[0368] The device with the largest RSSI or RSRP measurement value is selected to establish a connection and used as the first network device. If there are multiple devices with the largest RSSI or RSRP measurement value, the A-IOT device selects one device as the first network device based on its own implementation.

[0369] Optionally, the discovery message (or assistance request message) is carried based on at least one of the following:

[0370] Use physical layer control signaling to carry discovery messages (assistance request messages), or to carry discovery messages (assistance request messages) and ID information of A-IOT devices;

[0371] Use high-layer signaling to carry discovery messages (assistance request messages), or to carry discovery messages (assistance request messages) and ID information of A-IOT devices;

[0372] The reference signal is used to carry the discovery message (assistance request message), or the reference signal is used to carry the discovery message (assistance request message) and the ID information of the A-IOT device at the same time.

[0373] Optionally, the reference signal is a sequence, the cyclic shift of the sequence carries the ID information of the A-IOT device, and different cyclic shift values ​​correspond to different ID information of the A-IOT device.

[0374] Optionally, the reference signal is a sequence, and the time-frequency domain resources where the reference signal is located carry the ID information of the A-IOT device, and different time-frequency domain resources correspond to different ID information of the A-IOT device.

[0375] Optionally, the feedback information is carried based on at least one of the following:

[0376] Physical layer control signaling carries confirmation messages (such as ACK) and or ID (such as destination ID) information;

[0377] Use high-layer signaling to carry confirmation messages (such as ACK) and or ID information (such as destination ID);

[0378] The confirmation message is a reference signal and does not need to be carried by higher-layer signaling or control signaling.

[0379] In some embodiments, when the measured value is greater than or equal to the pre-configured threshold 3, the connection with the current first network device is maintained, and the first network device is not reselected.

[0380] In some embodiments, when the measured value is less than or equal to the pre-configured threshold 3, the first network device is reselected. In some embodiments, the reselection of the first network device includes at least one of the following:

[0381] 1) Based on the above-mentioned first network device discovery process, select the network device corresponding to the largest RSSI measurement value or RSRP measurement value to establish a connection, and use it as the first network device after reselection.

[0382] 2) During the first triggered discovery process (requesting assistance), in the candidate list of the determined first network device, a node corresponding to the second largest RSSI measurement value or RSRP measurement value is selected to establish a connection and is used as the first network device.

[0383] In some embodiments, the resource to which the A-IOT device sends the discovery message includes at least one of the following:

[0384] The network pre-configures resources for the discovery process for the A-IOT device, i.e., for sending assistance request messages, discovery messages, or resource identification (source ID) information of the A-IOT device;

[0385] The network configures a dedicated resource pool for A-IOT devices. This resource pool is used to send assistance request messages, discovery messages, or source ID information of A-IOT devices and is only used to perform the discovery process.

[0386] The network configures additional resources for the discovery process in the resource pool configured for A-IOT device data and signaling (i.e., the shared resource pool). These resources are excluded from the resource pool and cannot be used for the transmission of A-IOT device data and signaling.

[0387] 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.

[0388] 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.

[0389] 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.

[0390] Figure 6A is a schematic diagram of the structure of the terminal proposed in an embodiment of the present disclosure. As shown in Figure 6A, the terminal 6100 may include: a transceiver module 6101 and a processing module 6102. In some embodiments, the above-mentioned transceiver module 6101 is used to send the first information when the first condition is met, wherein the node device used to find a node device for communicating with the terminal includes one or more node devices. Optionally, the above-mentioned transceiver module 6101 is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal 101 in any of the above methods (for example, step S2101, step S2102 but not limited thereto), which will not be repeated here.

[0391] In some embodiments, the processing module 6102 is used to determine the first network device. Optionally, the processing module 6102 is used to execute at least one of the processing steps of the terminal 101 in any of the above methods (such as step S2103, but not limited thereto), which will not be repeated here.

[0392] In some embodiments, satisfying the first condition includes at least one of the following: the terminal receives a first signal, determines that the quality parameter value of the first signal is less than or equal to a first threshold, and the first signal is a signal sent by the network device; the terminal does not receive feedback information from the network device regarding the second information within the effective time, and the second information is sent by the terminal to the network device.

[0393] In some embodiments, satisfying the first condition includes that a quality parameter value of the first signal determined by the terminal is less than or equal to a first threshold; the quality parameter value includes multiple quality parameter values, and different quality parameter values ​​correspond to different first thresholds.

[0394] In some embodiments, satisfying the first condition further includes: the terminal receiving a first signal, and determining that a quality parameter value of the first signal is greater than or equal to a second threshold; wherein the first threshold is greater than the second threshold.

[0395] In some embodiments, the first information includes request information, or the first information includes request information and identification information of the terminal; the request information is used to determine a node device communicating with the terminal.

[0396] In some embodiments, the first information is carried based on at least one of the following: physical layer control signaling; higher layer control signaling; reference signal.

[0397] In some embodiments, the first information includes request information and identification information of the terminal, and is carried based on a reference signal; the reference signal carries the identification information of the terminal based on at least one of the following: cyclic shift, different cyclic shifts carry identification information of different terminals; time-frequency domain resources, different time-frequency domain resources carry identification information of different terminals.

[0398] In some embodiments, the transceiver module 6101 is further used to: receive a second signal, where the second signal carries feedback information, and the feedback information is feedback information sent to the terminal by one or more node devices that receive the first information.

[0399] In some embodiments, the processing module 6102 is further configured to determine a quality parameter value of the second signal; and select a first node device corresponding to a signal with a maximum quality parameter value among the second signals as the node device for communicating with the terminal.

[0400] In some embodiments, the transceiver module 6101 is further configured to: receive a third signal from the first node device, and determine a quality parameter value of the third signal.

[0401] In some embodiments, when the quality parameter value of the third signal is less than or equal to the third threshold, the processing module 6102 reselects a node device for communicating with the terminal.

[0402] In some embodiments, when the quality parameter value of the third signal is greater than a third threshold, the processing module 6102 maintains communication between the terminal and the first node device.

[0403] In some embodiments, the processing module 6102 is further configured to save a quality parameter value of the second signal received when the first information is sent for the first time, wherein the saved quality parameter value of the second signal is greater than a third threshold;

[0404] While saving the quality parameter value of the second signal received when the first information is sent for the first time, the processing module 6102 reselects the node device for communicating with the terminal in the following manner: based on the saved quality parameter value of the second signal, the second node device corresponding to the signal with the second largest quality parameter value in the second signal is selected as the node device for communicating with the terminal.

[0405] In some embodiments, the resources for sending the first information are determined based on at least one of the following resources: pre-configured resources; a resource pool dedicated to the first information; and resources in a public resource pool for sending the first information.

[0406] In some embodiments, the quality parameter includes at least one of the following: RSSI, RSRP, RSRQ.

[0407] In some embodiments, the feedback information includes: confirmation response information, and / or identification information of the node device.

[0408] 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.

[0409] 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.

[0410] Figure 6B is a schematic diagram of the structure of the node device proposed in an embodiment of the present disclosure. As shown in Figure 6B, the node device 6200 may include: a transceiver module 6201. In some embodiments, the above-mentioned transceiver module 6201 is used to receive first information, and the first information is information sent by the terminal when the first condition is met, wherein the first information is used to find a node device for communicating with the terminal, and the node device includes one or more node devices. Optionally, the above-mentioned transceiver module 6201 is used to execute at least one of the communication steps such as sending and / or receiving (for example, step S2101, step S2102 but not limited thereto) performed by the network device 102 in any of the above methods, which will not be repeated here.

[0411] In some embodiments, the first condition is met, including at least one of the following: the quality parameter value of the first signal is less than or equal to the first threshold, the first signal is a signal sent by the network device, and the quality parameter value of the first signal is determined based on the terminal measuring the first signal; the network device does not send feedback information on the second information to the terminal within the effective time, and the second information is information sent by the network device to the terminal.

[0412] In some embodiments, satisfying the first condition includes: a quality parameter value of the first signal is less than or equal to a first threshold, and the quality parameter value includes multiple quality parameter values, and different quality parameter values ​​correspond to different first thresholds.

[0413] In some embodiments, satisfying the first condition further includes: a quality parameter value of the first signal is greater than or equal to a second threshold, wherein the first signal is sent by a network device, and the first threshold is greater than the second threshold.

[0414] In some embodiments, the first information includes request information, or the first information includes request information and identification information of the terminal; the request information is used to determine a node device communicating with the terminal.

[0415] In some embodiments, the first information is carried based on at least one of the following: physical layer control signaling; higher layer control signaling; reference signal.

[0416] In some embodiments, the first information includes request information and identification information of the terminal, and is carried based on a reference signal; the reference signal carries the identification information of the terminal based on at least one of the following: cyclic shift, different cyclic shifts carry identification information of different terminals; time-frequency domain resources, different time-frequency domain resources carry identification information of different terminals.

[0417] In some embodiments, the transceiver module 6201 is further configured to enable the node device to send a second signal, wherein the second signal carries feedback information of the first information.

[0418] In some embodiments, the transceiver module 6201 is further configured to: the node device sends a third signal, terminate communication with the terminal when the quality parameter value of the third signal is less than or equal to a third threshold, and maintain communication with the terminal when the quality parameter value of the third signal is greater than the third threshold.

[0419] In some embodiments, the resources for sending the first information are determined based on at least one of the following resources: pre-configured resources; a resource pool dedicated to the first information; and resources in a public resource pool for sending the first information.

[0420] In some embodiments, the quality parameter includes at least one of the following: RSSI, RSRP, RSRQ.

[0421] In some embodiments, confirmation response information, and / or identification information of the node device.

[0422] 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.

[0423] Figure 7A is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. Communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0424] As shown in Figure 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process 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 7100 is used to perform any of the above methods. Optionally, one or more processors 7101 are used to call instructions to enable the communication device 7100 to perform any of the above methods.

[0425] In some embodiments, the communication device 7100 further includes one or more transceivers 7102. When the communication device 7100 includes one or more transceivers 7102, the transceiver 7102 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, step S2102 but not limited thereto), and the processor 7101 performs at least one of the other steps (for example, step S2103 but not limited thereto). 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 interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0426] In some embodiments, the communication device 7100 further includes one or more memories 7103 for storing data. Alternatively, all or part of the memories 7103 may be located outside the communication device 7100. In alternative embodiments, the communication device 7100 may include one or more interface circuits 7104. Optionally, the interface circuits 7104 are connected to the memories 7103 and may be configured to receive data from the memories 7103 or other devices, or to send data to the memories 7103 or other devices. For example, the interface circuits 7104 may read data stored in the memories 7103 and send the data to the processor 7101.

[0427] The communication device 7100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0428] 7B is a schematic diagram of the structure of a chip 7200 proposed in an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 7200 shown in FIG7B , but the present disclosure is not limited thereto.

[0429] The chip 7200 includes one or more processors 7201. The chip 7200 is configured to execute any of the above methods.

[0430] In some embodiments, chip 7200 further includes one or more interface circuits 7202. Alternatively, terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 7200 further includes one or more memories 7203 for storing data. Alternatively, all or part of memory 7203 may be located external to chip 7200. Optionally, interface circuit 7202 is connected to memory 7203 and may be used to receive data from memory 7203 or other devices, or may be used to send data to memory 7203 or other devices. For example, interface circuit 7202 may read data stored in memory 7203 and send the data to processor 7201.

[0431] In some embodiments, the interface circuit 7202 performs at least one of the communication steps (e.g., but not limited to, step S2101) in the above method, such as sending and / or receiving. For example, the interface circuit 7202 performing the communication steps (e.g., sending and / or receiving) in the above method means that the interface circuit 7202 performs data exchange between the processor 7201, the chip 7200, the memory 7203, or the transceiver device. In some embodiments, the processor 7201 performs at least one of the other steps (e.g., but not limited to, step S2103).

[0432] 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.

[0433] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0434] The present disclosure also provides a program product, which, when executed by the communication device 7100, enables the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0435] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A communication method, characterized in that, The method includes: When a first condition is satisfied, the terminal sends first information, where the first information is used to find a node device that communicates with the terminal.

2. The method according to claim 1, wherein The satisfaction of the first condition includes at least one of the following: The terminal receives a first signal, determines that a quality parameter value of the first signal is less than or equal to a first threshold, and the first signal is a signal sent by a network device; The terminal does not receive feedback information on second information from the network device within an effective time, and the second information is sent by the terminal to the network device.

3. The method according to claim 2, characterized in that, The satisfaction of the first condition includes that a quality parameter value of a first signal determined by the terminal is less than or equal to a first threshold; Different quality parameter values correspond to different first thresholds.

4. The method according to claim 2 or 3, characterized in that, The satisfaction of the first condition further includes: The terminal receives a first signal, determines that a quality parameter value of the first signal is greater than or equal to a second threshold; Wherein, the first threshold is greater than the second threshold.

5. The method according to any one of claims 1 to 4, characterized in that, The first information includes a request message, or the first information includes a request message and identification information of the terminal; The request message is used to find a node device that communicates with the terminal.

6. The method according to claim 5, wherein The first information is carried based on at least one of the following: Physical layer control signaling; Higher layer control signaling; Reference signal.

7. The method according to claim 6, wherein The first information includes a request message and identification information of the terminal, and is carried based on the reference signal; The reference signal carries the identification information of the terminal based on at least one of the following: Cyclic shift, and different cyclic shifts carry identification information of different terminals; Time-frequency domain resources, and different time-frequency domain resources carry identification information of different terminals.

8. The method according to any one of claims 1 to 7, characterized in that, The method further includes: The terminal receives a second signal and determines a quality parameter value of the second signal, where the second signal carries feedback information, and the feedback information is feedback information sent by one or more node devices that receive the first information to the terminal; The terminal selects a first node device corresponding to the signal with the maximum quality parameter value in the second signal as the node device that communicates with the terminal.

9. The method according to claim 8, characterized in that, The method further includes: Receiving a third signal from the first node device and determining a quality parameter value of the third signal; In response to the quality parameter value of the third signal being less than or equal to a third threshold, reselecting a node device that communicates with the terminal; or, In response to the quality parameter value of the third signal being greater than the third threshold, maintaining communication between the terminal and the first node device.

10. The method according to claim 9, wherein The reselecting a node device that communicates with the terminal includes: Resending the first information; the terminal re-receives the second signal and determines a quality parameter value of the re-received second signal, where the re-received second signal carries feedback information, and the feedback information is feedback information sent by one or more node devices that receive the re-sent first information to the terminal; The terminal selects a second node device corresponding to the signal with the maximum quality parameter value in the re-received second signal as the node device that communicates with the terminal.

11. The method according to claim 9, wherein The method further includes: saving the quality parameter value of the second signal received when the first information is sent for the first time, where the saved quality parameter value of the second signal is greater than the third threshold; The reselecting the node device for communicating with the terminal includes: Based on the saved quality parameter value of the second signal, the terminal selects, as the node device for communicating with the terminal, the second node device corresponding to the signal with the second largest quality parameter value in the second signals.

12. The method according to any one of claims 1 to 11, characterized in that, The resource for the terminal to send the first information is determined based on at least one of the following resources: Pre-configured resources; A resource pool dedicated to the first information; Resources in the common resource pool for sending the first information.

13. The method according to any one of claims 1 to 11, characterized in that, The quality parameter includes at least one of the following: Received Signal Strength Indicator (RSSI); Reference Signal Received Power (RSRP); Reference Signal Received Quality (RSRQ).

14. The method according to claim 8, wherein The feedback information includes: acknowledgement response information, and / or the identification information of the node device.

15. A communication method, characterized in that, The method includes: The node device receives the first information, where the first information is information sent by the terminal when a first condition is met, and the first information is used to find a node device for communicating with the terminal.

16. The method according to claim 15, wherein The first information includes a request message, or the first information includes a request message and the identification information of the terminal; The request message is used to determine the node device for communicating with the terminal.

17. The method according to claim 15, characterized in that, The first information is carried based on at least one of the following: Physical layer control signaling; Higher layer control signaling; Reference signals.

18. The method according to claim 16, wherein The first information includes a request message and the identification information of the terminal, and is carried based on a reference signal; The reference signal carries the identification information of the terminal based on at least one of the following: Cyclic shift, where different cyclic shifts carry the identification information of different terminals; Time-frequency domain resources, where different time-frequency domain resources carry the identification information of different terminals.

19. The method according to claim 15, wherein The method further includes: The node device sends a second signal, where the second signal carries the feedback information of the first information.

20. The method according to claim 16, wherein The method further includes: The node device sends a third signal, and terminates communication with the terminal when the quality parameter value of the third signal is less than or equal to a third threshold; and maintains communication with the terminal when the quality parameter value of the third signal is greater than the third threshold.

21. The method according to any one of claims 15 to 17, characterized in that, The transmission resource of the first information is determined based on at least one of the following resources: Pre-configured resources; A resource pool dedicated to the first information; Resources in the common resource pool for sending the first information.

22. The method according to any one of claims 15 to 20, characterized in that, The quality parameter includes at least one of the following: Received Signal Strength Indicator (RSSI); Reference Signal Received Power (RSRP); Reference Signal Received Quality (RSRQ).

23. The method according to claim 19, wherein The feedback information includes: acknowledgement response information, and / or the identification information of the node device.

24. A communication method, characterized in that, The method includes: When a first condition is met, the terminal sends the first information, where the first information is used to request the node device to communicate with the terminal; The node device receives the first information.

25. A terminal, characterized in that, Includes: A transceiver module, configured to send the first information when a first condition is met, where the first information is used to request The node device communicates with the terminal.

26. A node device, characterized in that, It includes: A transceiver module, configured to receive first information, where the first information is information sent by the terminal when a first condition is met, and the first information is used to request the node device to communicate with the terminal.

27. A terminal, characterized in that, It includes: One or more processors; Wherein, the processor is configured to execute the communication method described in any one of claims 1 to 14.

28. A node device, characterized in that, It includes: One or more processors; Wherein, the processor is configured to execute the communication method described in any one of claims 15 to 23.

29. A communication system, characterized in that, It includes: A terminal and a node device, wherein the terminal is configured to implement the communication method described in any one of claims 1 to 14, and the node device is configured to implement the communication method described in any one of claims 15 to 23.

30. A storage medium, the storage medium stores instructions, characterized in that, When the instruction runs on the communication device, the communication device is caused to execute the communication method described in any one of claims 1 to 14, 15 to 23.

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