Communication methods, devices and storage medium

Abstract

The present disclosure relates to communication methods, devices and a storage medium. A method comprises: receiving configuration information sent by a network device; on the basis of the configuration information, performing a plurality of measurements on a first candidate cell to obtain a plurality of measurement results of the first candidate cell; and, on the basis of changes of the plurality of measurement results of the first candidate cell, determining whether the first candidate cell is a target cell. In other words, the terminal device may determine, on the basis of the changes of the measurement results obtained by performing the plurality of measurements on the first candidate cell, whether the first candidate cell is a target cell. Thus, the terminal device will not perform cell handover simply on the basis of one measurement result, thereby reducing the frequency of the terminal device performing cell handover, and further improving system performance.

Description

Communication method, device, and storage medium TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a communication method, device and storage medium. BACKGROUND

[0002] In a satellite communication network, due to the fact that the signal strength of a non-terrestrial network (NTN) cell center and a cell edge does not change significantly, a location-based cell handover is introduced. A terminal device triggers a handover request by judging the distance to a serving satellite and a target satellite.

[0003] SUMMARY

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

[0005] According to a first aspect of the present disclosure, a communication method is provided, which is performed by a terminal device, and the method comprises:

[0006] receiving configuration information sent by a network device;

[0007] performing multiple measurements on a first candidate cell according to the configuration information to obtain multiple measurement results of the first candidate cell;

[0008] determining whether the first candidate cell is a target cell according to the change of the multiple measurement results of the first candidate cell.

[0009] According to a second aspect of the present disclosure, a communication method is provided, which is performed by a network device, and the method comprises:

[0010] sending configuration information to a terminal device, the configuration information being used for the terminal device to perform multiple measurements on a first candidate cell to obtain multiple measurement results of the first candidate cell, and to determine whether the first candidate cell is a target cell according to the change of the multiple measurement results of the first candidate cell.

[0011] According to a third aspect of the present disclosure, a terminal device is provided, which comprises:

[0012] a transceiver module configured to receive configuration information sent by a network device;

[0013] a processing module configured to perform multiple measurements on a first candidate cell according to the configuration information to obtain multiple measurement results of the first candidate cell;

[0014] The processing module is further configured to determine whether the first candidate cell is a target cell according to a change of the multiple measurement results of the first candidate cell.

[0015] According to a fourth aspect of the embodiments of the present disclosure, a network device is provided, comprising:

[0016] The transceiver is configured to send configuration information to the terminal device, the configuration information being used for the terminal device to perform multiple measurements on a first candidate cell to obtain multiple measurement results of the first candidate cell, and to determine whether the first candidate cell is a target cell according to a change of the multiple measurement results of the first candidate cell.

[0017] According to a fifth aspect of the embodiments of the present disclosure, a communication device is provided, comprising one or more processors; wherein the communication device can be used to perform the optional implementation manners of the first aspect or the second aspect.

[0018] According to a sixth aspect of the embodiments of the present disclosure, a communication system is provided, comprising a terminal device and a network device, wherein the terminal device is configured to perform the method described in the optional implementation manners of the first aspect, and the network device is configured to perform the method described in the optional implementation manners of the second aspect.

[0019] According to a seventh aspect of the embodiments of the present disclosure, a storage medium is provided, which stores instructions, when the instructions are run on a communication device, causing the communication device to perform the method described in the optional implementation manners of the first aspect or the second aspect.

[0020] According to an eighth aspect of the embodiments of the present disclosure, a computer program product is provided, comprising a computer program, which is executed by a communication device to implement the method described in the optional implementation manners of the first aspect or the second aspect.

[0021] The technical solutions provided by the embodiments of the present disclosure can produce the following beneficial effects: receiving configuration information sent by a network device; performing multiple measurements on a first candidate cell according to the configuration information to obtain multiple measurement results of the first candidate cell; and determining whether the first candidate cell is a target cell according to a change of the multiple measurement results of the first candidate cell. That is, a terminal device can determine whether a first candidate cell is a target cell according to a change of measurement results of multiple measurements on the first candidate cell, so that the terminal device does not perform cell switching according to a measurement result, reduces the frequency of cell switching of the terminal device, and thus improves system performance.

[0022] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0024] Figure 1A is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0025] Figure 1B is a flowchart illustrating a CHO according to an embodiment of the present disclosure.

[0026] Figure 2A is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.

[0027] Figure 2B is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.

[0028] Figure 3A is a flowchart illustrating a communication method according to an embodiment of the present disclosure.

[0029] Figure 3B is a flowchart illustrating a communication method according to an embodiment of the present disclosure.

[0030] Figure 3C is a flowchart illustrating a communication method according to an embodiment of the present disclosure.

[0031] Figure 4 is a flowchart illustrating a communication method according to an embodiment of the present disclosure.

[0032] Figure 5 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.

[0033] Figure 6A is a schematic diagram of the structure of a terminal device proposed in an embodiment of this disclosure.

[0034] Figure 6B is a schematic diagram of the structure of a network device proposed in an embodiment of this disclosure.

[0035] Figure 7A is a schematic diagram of the structure of the communication device proposed in an embodiment of this disclosure.

[0036] Figure 7B is a schematic diagram of the chip structure proposed in an embodiment of this disclosure. Detailed Implementation

[0037] This disclosure provides a communication method, device, and storage medium.

[0038] In a first aspect, embodiments of this disclosure provide a communication method executed by a terminal device, the method comprising:

[0039] Receive configuration information sent by network devices;

[0040] measure the first candidate cell according to the configuration information to obtain a plurality of measurement results of the first candidate cell;

[0041] determine whether the first candidate cell is a target cell according to a change of the plurality of measurement results of the first candidate cell.

[0042] In the above embodiment, the terminal device can determine whether the first candidate cell is a target cell according to a change of the measurement results of the plurality of measurements on the first candidate cell. In this way, the terminal device does not perform cell switching according to a measurement result, and the frequency of cell switching of the terminal device is reduced, thereby improving system performance.

[0043] In combination with some embodiments of the first aspect, in some embodiments, the configuration information includes a plurality of reference positions configured by the network device for the first candidate cell.

[0044] The measurement of the first candidate cell according to the configuration information to obtain a plurality of measurement results of the first candidate cell includes:

[0045] measuring a distance value between the terminal device and each reference position of the first candidate cell to obtain a plurality of distance values corresponding to the first candidate cell, different reference positions corresponding to different first measurement times.

[0046] In the above embodiment, the terminal device can measure the distance to the reference position of the first candidate cell at different measurement times to obtain a plurality of distance values. In this way, the terminal device can determine whether the first candidate cell is a target cell according to a change of the distance value to the reference position of the first candidate cell.

[0047] In combination with some embodiments of the first aspect, in some embodiments, the configuration information includes ephemeris information configured by the network device for the first candidate cell; and the measurement of the first candidate cell according to the configuration information to obtain a plurality of measurement results of the first candidate cell includes:

[0048] determining a distance value between the terminal device and the reference position of the first candidate cell at a plurality of first measurement times according to the ephemeris information of the first candidate cell to obtain a plurality of distance values corresponding to the first candidate cell.

[0049] In the above embodiment, the terminal device can determine the distance value corresponding to the first candidate cell at a plurality of first measurement times according to the ephemeris information of the first candidate cell. In this way, the terminal device can determine whether the first candidate cell is a target cell according to a change of the distance value to the reference position of the first candidate cell.

[0050] In some embodiments of the first aspect, determining whether the first candidate cell is the target cell according to the changes of the measurement results of the first candidate cell comprises:

[0051] determining that a distance value corresponding to the first candidate cell measured at a second measurement time is greater than a distance value corresponding to the first candidate cell measured at a third measurement time, the second measurement time and the third measurement time being included in the plurality of first measurement times, and the second measurement time being before the third measurement time;

[0052] determining that the first candidate cell is the target cell.

[0053] In the above embodiments, if the terminal device is closer and closer to the first candidate cell, the first candidate cell can be selected as the target cell.

[0054] In some embodiments of the first aspect, the method further comprises:

[0055] determining that a distance value between the terminal device and a reference location of a serving cell is greater than a first threshold value;

[0056] determining that a distance value between the terminal device and a reference location of each second candidate cell in a plurality of second candidate cells is less than a second threshold value, the first candidate cell being included in the plurality of second candidate cells, and the second threshold value being less than the first threshold value.

[0057] In the above embodiments, in a case where the distance value between the terminal device and the reference location of each second candidate cell in the plurality of second candidate cells is less than the second threshold value, i.e., the plurality of second candidate cells satisfy the access condition, a second candidate cell that is closer and closer to the terminal device, i.e., the first candidate cell, can be selected from the plurality of second candidate cells as the target cell.

[0058] In some embodiments of the first aspect, the configuration information further comprises a first measurement time corresponding to each reference location.

[0059] In the above embodiments, the network device can configure a corresponding measurement time for each reference location.

[0060] In some embodiments of the first aspect, the configuration information comprises a plurality of reference signals of the first candidate cell, and the measurement result comprises at least one of:

[0061] a reference signal received power (RSRP);

[0062] a reference signal received quality (RSRQ);

[0063] Signal to noise and interference ratio, SINR

[0064] The measuring the first candidate cell according to the configuration information comprises:

[0065] The measuring the reference signal of the first candidate cell at a plurality of first measurement times to obtain a plurality of measurement results of the first candidate cell, wherein different reference signals correspond to different first measurement times.

[0066] In the above embodiment, the terminal device can measure the reference signal of the first candidate cell and determine the measurement results of the first candidate cell at a plurality of first measurement times. In this way, the terminal device can determine whether the first candidate cell is the target cell according to the change of the signal quality of the first candidate cell.

[0067] In combination with some embodiments of the first aspect, in some embodiments, the determining whether the first candidate cell is the target cell according to the change of the plurality of measurement results of the first candidate cell comprises:

[0068] determining that the measurement result of the first candidate cell measured at a second measurement time is less than the measurement result of the first candidate cell measured at a third measurement time, wherein the second measurement time and the third measurement time are both included in the plurality of first measurement times, and the second measurement time is before the third measurement time;

[0069] determining that the first candidate cell is the target cell.

[0070] In the above embodiment, if the signal quality of the first candidate cell is getting better and better, the first candidate cell can be taken as the target cell.

[0071] In combination with some embodiments of the first aspect, in some embodiments, the method further comprises:

[0072] determining that the measurement result of the reference signal of the serving cell of the terminal device is less than a third threshold value;

[0073] determining that the measurement result of each second candidate cell in a plurality of second candidate cells is greater than a fourth threshold value, wherein the first candidate cell is included in the plurality of second candidate cells, and the fourth threshold value is greater than the third threshold value.

[0074] In the above embodiment, in the case that the measurement result of each second candidate cell in the plurality of second candidate cells is greater than the fourth threshold value, i.e., the plurality of second candidate cells satisfy the access condition, the second candidate cell with the signal quality getting better and better, i.e., the first candidate cell, can be selected from the plurality of second candidate cells as the target cell.

[0075] In some embodiments of the first aspect, in some embodiments, the method further comprises:

[0076] determining that the first candidate cell is the target cell, and accessing the target cell.

[0077] In a second aspect, the embodiments of the present disclosure provide a communication method, performed by a network device, the method comprising:

[0078] sending, by the network device, configuration information to a terminal device, the configuration information being used by the terminal device to perform multiple measurements on a first candidate cell to obtain multiple measurement results of the first candidate cell, and to determine whether the first candidate cell is a target cell according to a change in the multiple measurement results of the first candidate cell.

[0079] In some embodiments of the second aspect, in some embodiments, the configuration information comprises multiple reference positions configured by the network device for the first candidate cell, different reference positions corresponding to different first measurement times, the reference positions being used by the terminal device to perform measurements on the first candidate cell to obtain measurement results of the first candidate cell.

[0080] In some embodiments of the second aspect, in some embodiments, the configuration information further comprises a first measurement time corresponding to each of the reference positions.

[0081] In some embodiments of the second aspect, in some embodiments, the configuration information comprises ephemeris information configured by the network device for the first candidate cell.

[0082] In some embodiments of the second aspect, in some embodiments, the configuration information comprises multiple reference signals of the first candidate cell, the reference signals being used by the terminal device to perform measurements on the first candidate cell to obtain measurement results of the first candidate cell.

[0083] In some embodiments of the second aspect, in some embodiments, the measurement results comprise at least one of:

[0084] reference signal received power (RSRP);

[0085] reference signal received quality (RSRQ);

[0086] signal to noise and interference ratio (SINR).

[0087] In a third aspect, the embodiments of the present disclosure provide a communication method, the method comprising:

[0088] sending, by a network device, configuration information to a terminal device;

[0089] The terminal device performs multiple measurements on the first candidate cell according to the configuration information, and obtains multiple measurement results of the first candidate cell.

[0090] The terminal device determines whether the first candidate cell is a target cell according to a change of the multiple measurement results of the first candidate cell.

[0091] In a fourth aspect, an embodiment of the present disclosure provides a terminal device, which can include at least one of a transceiver module and a processing module; wherein the terminal device can be configured to perform the optional implementation manners of the first aspect.

[0092] In a fifth aspect, an embodiment of the present disclosure provides a network device, which can include at least one of a transceiver module and a processing module; wherein the network device can be configured to perform the optional implementation manners of the second aspect.

[0093] In a sixth aspect, an embodiment of the present disclosure provides a terminal device, which can include one or more processors; wherein the terminal device can be configured to perform the optional implementation manners of the first aspect.

[0094] In a seventh aspect, an embodiment of the present disclosure provides a network device, which can include one or more processors; wherein the network device can be configured to perform the optional implementation manners of the second aspect.

[0095] In an eighth aspect, an embodiment of the present disclosure provides a communication system, which can include a terminal device and a network device; wherein the terminal device is configured to perform the method described in the optional implementation manners of the first aspect, and the network device is configured to perform the method described in the optional implementation manners of the second aspect.

[0096] In a ninth aspect, an embodiment of the present disclosure provides a storage medium, which stores instructions, when the instructions are run on a communication device, the communication device is caused to perform the method described in the optional implementation manners of the first aspect or the second aspect.

[0097] In a tenth aspect, an embodiment of the present disclosure provides a program product, which is executed by a communication device, and causes the communication device to perform the method described in the optional implementation manners of the first aspect or the second aspect.

[0098] In an eleventh aspect, an embodiment of the present disclosure provides a computer program, when it is run on a computer, causes the computer to perform the method described in the optional implementation manners of the first aspect or the second aspect.

[0099] In a twelfth aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described in optional implementations of the first or second aspect.

[0100] It is understood that the aforementioned terminal devices, network devices, communication devices, communication systems, storage media, program products, computer programs, chips, or chip systems can all be used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0101] This disclosure provides a communication method, device, and storage medium. In some embodiments, the terms "information transmission method" and "information processing method," "communication method," etc., can be used interchangeably; the terms "information transmission device" and "information processing device," "communication device," "communication equipment," etc., can be used interchangeably; and the terms "information processing system," "communication system," etc., can be used interchangeably.

[0102] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular 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 particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0103] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0104] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0105] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0106] In some embodiments, “plurality” can refer to two or more.

[0107] In some embodiments, the terms “at least one of,” “one or more of,” “a plurality of,” “multiple,” and the like can be interchangeable.

[0108] In some embodiments, the recitations “at least one of A, B,” “A and / or B,” “in one case A, in another case B,” “in response to a case A, in response to a case B,” and the like, can include the following technical solutions according to the case: in some embodiments A (A is executed regardless of B); in some embodiments B (B is executed regardless of A); in some embodiments, A and B are selectively executed (A and B are selectively executed); in some embodiments, A and B (A and B are executed). When there are more branches such as A, B, C, and the like, it is similar to the above.

[0109] In some embodiments, the recitations “A or B” and the like can include the following technical solutions according to the case: in some embodiments A (A is executed regardless of B); in some embodiments B (B is executed regardless of A); in some embodiments, A and B are selectively executed (A and B are selectively executed). When there are more branches such as A, B, C, and the like, it is similar to the above.

[0110] The prefix words of "first", "second" and the like in the embodiments of the present disclosure are merely used to distinguish different description objects, and do not constitute limitation on the position, order, priority, quantity or content of the description objects. The description objects are described in the claims or embodiments, and should not be construed as redundant limitation because of the use of the prefix words. For example, the description object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or order between "fields", and "first" and "second" do not limit whether the "fields" modified thereby are in the same message or not, nor limit the order of "first field" and "second field". For another example, the description object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description object is not limited by the ordinal words, and can be one or more. For example, "first device", wherein the quantity of "device" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the description object is "device", and "first device" and "second device" can be the same device or different devices, and the types thereof can be the same or different. For another example, the description object is "information", and "first information" and "second information" can be the same information or different information, and the contents thereof can be the same or different.

[0111] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0112] In some embodiments, the terms of "in response to", "in response to determining", "in the case of", "when", "when", "if", "if" and the like can be replaced with each other.

[0113] In some embodiments, the terms of "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 lower than", "above" and the like can be replaced with each other, and the terms of "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", "below" and the like can be replaced with each other.

[0114] In some embodiments, an apparatus or the like can be interpreted as an entity, and can also be interpreted as virtual, and the name thereof is not limited to the name described in the embodiments. The terms "apparatus", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject" and the like can be replaced with each other.

[0115] In some embodiments, a "network" can be interpreted as an apparatus (for example, an access network device, a core network device, and the like) included in the network.

[0116] In some embodiments, the terms "Access Network Device (AN Device)", "Radio Access Network Device (RAN Device)", "Base Station (BS)", "Radio Base Station", "Fixed Station", "Node", "Access Point", "Transmission Point (TP)", "Reception Point (RP)", "Transmission / Reception Point (TRP)", "Panel", "Antenna Panel", "Antenna Array", "Cell", "Macro Cell", "Small Cell", "Femto Cell", "Pico Cell", "Sector", "Cell Group", "Serving Cell", "Carrier", "Component Carrier", "Bandwidth Part (BWP)" and the like can be replaced with each other.

[0117] In some embodiments, the terms "terminal," "terminal device," "user equipment" (UE), "user terminal," "mobile station" (MS), "mobile terminal" (MT), subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, and the like can be used interchangeably.

[0118] In some embodiments, an access network device, a core network device, or a network device can be replaced with a terminal. For example, the embodiments of the present disclosure can also be applied to a structure in which communication between an access network device, a core network device, or a network device and a terminal is replaced with communication between a plurality of terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), or the like). In this case, the terminal can also be configured to have all or part of the functions of the access network device. In addition, the terms "uplink," "downlink," and the like can also be replaced with terms corresponding to the inter-terminal communication (e.g., "side"). For example, an uplink channel, a downlink channel, and the like can be replaced with a side channel or a direct connection channel, and an uplink, a downlink, and the like can be replaced with a side link or a direct connection link.

[0119] In some embodiments, a terminal can be replaced with an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device can also be configured to have all or part of the functions of the terminal.

[0120] In some embodiments, obtaining data, information, etc. can comply with laws and regulations of the country where the location is.

[0121] In some embodiments, data, information, etc. can be obtained after obtaining user consent.

[0122] In addition, each element, each row, or each column in the table of the embodiments of the present disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0123] FIG. 1A is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG. 1A, the communication system 100 can include a terminal device 101 and a network device 102.

[0124] In some embodiments, the terminal device 101 can include at least one of a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a Pad, 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 smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, etc., but is not limited thereto.

[0125] In some embodiments, the network device 102 can include at least one of an access network device and a core network device.

[0126] In some embodiments, the access network device can be at least one of a node or a device that accesses a terminal device to a wireless network, and the access network device can include at least one of an evolved node B (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (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, an access node in a Wi-Fi system, but is not limited thereto.

[0127] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, at which time the interfaces between or within the access network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0128] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), wherein the CU can also be referred to as a control unit (Control Unit). The CU-DU structure can split the protocol layers of the access network device, and some of the protocol layers can be controlled by the CU, and the remaining or all of the protocol layers can be distributed in the DU and controlled by the CU, but is not limited thereto.

[0129] In some embodiments, the core network device can be one device, or a plurality of devices or device groups. The core network can include at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next generation core (NGC).

[0130] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed by the embodiments of the present disclosure. Those skilled in the art can know that, with the evolution of system architecture and the appearance of new business scenarios, the technical solutions proposed by the embodiments of the present disclosure are also applicable to similar technical problems.

[0131] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1A or part of the subject, but are not limited thereto. The subjects shown in FIG. 1A are examples, and the communication system can include all or part of the subjects in FIG. 1A, or other subjects other than FIG. 1A. The number and form of each subject is arbitrary, each subject can be real or virtual, the connection relationship between each subject is an example, each subject can not be connected or can be connected, the connection can be in any way, can be direct connection or indirect connection, can be wired connection or wireless connection.

[0132] 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 (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), system using other communication methods, next-generation system expanded based on them, and the like. In addition, a plurality of systems can be combined (for example, combination of LTE or LTE-A and 5G, and the like).

[0133] In some embodiments of the present disclosure, FIG. 1B is a flowchart of a CHO according to an embodiment of the present disclosure. As shown in FIG. 1B, if the UE determines that the distance from the current serving satellite (base station) is > a, and the distance from the target satellite is < b, the UE initiates a handover request to switch from the serving satellite (serving cell) to the target satellite (target cell).

[0134] In some embodiments, similar to the problems faced by the triggering event in conditional handover (CHO), due to the fact that the near-far effect is not obvious in NTN, the existing signal strength-based measurement event cannot meet the measurement reporting requirements in NTN.

[0135] In some embodiments, a location-based measurement reporting event is introduced in NTN, which triggers the UE to perform handover based on the distance between the UE and the cell reference location.

[0136] In some embodiments, for Event D1 and Event D2, a parameter TTT (timer to trigger) can be configured, and the UE reports the measurement results or performs CHO when the conditions of the events are met within the TTT time.

[0137] The following describes Event D1 and Event D2.

[0138] Event D1:

[0139] In some embodiments, the distance between the UE and the reference location 1 (referenceLocation1) is greater than the threshold 1, and the distance between the UE and the reference location 2 (referenceLocation2) is less than the threshold 2.

[0140] In some embodiments, when conditions D1-1 and D1-2 are both met, the entering condition of the event Event D1 is met.

[0141] In some embodiments, when conditions D1-3 or D1-4 are met, i.e., at least one of them is met, the leaving condition of the event Event D1 is met.

[0142] Condition D1-1: Ml1-Hys>Thresh1;

[0143] Condition D1-2: Ml2+Hys<Thresh2;

[0144] Condition D1-3: Ml1+Hys<Thresh1;

[0145] Condition D1-4: Ml2-Hys>Thresh2;

[0146] Where Ml1 is the distance between the UE and one reference location of Event D1 (i.e., referenceLocation1 defined in Event D1's reportConfigNR), without considering any offset; Ml2 is the distance between the UE and another reference location of Event D1 (i.e., referenceLocation2 defined in Event D1's reportConfigNR), without considering any offset; Hys is the hysteresis parameter of Event D1 (i.e., hysteresisLocation defined in Event D1's reportConfigNR); Thresh1 is the distance threshold of Event D1, configured as the parameter distanceThreshFromReference1, and related to the reference location referenceLocation1 configured in Event D1's reportConfigNR; Thresh2 is the distance threshold of Event D1, configured as the parameter distanceThreshFromReference2, and related to the reference location referenceLocation2 configured in Event D1's reportConfigNR. The unit of Ml1 is meters, and the unit of Ml2 is the same as M... l1 Similarly, the units of Hys and Thresh1 are the same as those of Ml1, Thresh1 and Thresh2 are the same as those of Ml1.

[0147] It should be noted that the definition of Event D1 also applies to CondEvent D1.

[0148] Event D2:

[0149] In some embodiments, the distance between the UE and the mobile reference location of the serving cell is greater than threshold 1, and the distance between the UE and a mobile reference location is less than threshold 2.

[0150] In some embodiments, the entry condition of Event D2 is satisfied when both condition D2-1 and condition D2-2 are satisfied.

[0151] In some embodiments, the exit condition of Event D2 is satisfied when either condition D2-3 or condition D2-4 is satisfied, i.e., at least one of them is satisfied.

[0152] Condition D2-1: Ml1-Hys>Thresh1;

[0153] Condition D2-2: Ml2+Hys <Thresh2;

[0154] Condition D2-3: Ml1 + Hys < Thresh1;

[0155] Condition D2-4: Ml2 - Hys > Thresh2;

[0156] wherein, Ml1 is the distance between the UE and the moving reference location of Event D2, without considering any offset, the moving reference location is determined based on the movingReferenceLocation of the serving cell broadcast in SIB19, the corresponding epoch time and the satellite ephemeris; Ml2 is the distance between the UE and another moving reference location of Event D2, without considering any offset, the moving reference location is determined based on the referenceLocation2 defined in the reportConfigNR of Event D2, the corresponding epoch time and the satellite ephemeris of the candidate cell; Hys is the hysteresis parameter of Event D2 (i.e. the hysteresisLocation defined in the reportConfigNR of Event D2); Thresh1 is the distance threshold of Event D2, configured as the distanceThreshFromReference1 parameter in the reportConfigNR, calculated from the moving reference location derived from the movingReferenceLocation parameter in SIB19; Thresh2 is the distance threshold of Event D2, configured as the distanceThreshFromReference2 parameter, calculated from the moving reference location derived from the referenceLocation2 parameter in the reportConfigNR of Event D2. The unit of Ml1 is meter, the unit of Ml2 is the same as Ml1, the unit of Hys is the same as Ml1, the unit of Thresh1 is the same as Ml1, the unit of Thresh2 is the same as Ml1. l1

[0157] It should be noted that the definition of Event D2 is also applicable to CondEvent D2.

[0158] In some embodiments, in the existing NTN standard, two location-based conditional handover mechanisms of Event D1 and Event D2 are defined, that is, through ephemeris information and UE location information, the UE can determine the appropriate timing of initiating a handover cell.

[0159] ​In some embodiments, the distances between target satellite #1, target satellite #2 and the UE are similar, but target satellite #1 is gradually moving away from the UE, and target satellite #2 is gradually moving closer to the UE. When the conditions of Event D1 / D2 are met, the satellite associated with the candidate cell may be gradually moving closer to the UE or gradually moving away from the UE, at this time, the UE may choose to switch to target satellite #1 which is gradually moving away from the UE, and after the UE accesses target satellite #1, the UE needs to switch again in a relatively short time. If the UE chooses to switch to target satellite #2 which is gradually moving closer to the UE, the UE stays in target satellite #2 for a longer time than in target satellite #1. Therefore, after the UE accesses target satellite #1, it will cause more frequent switching.

[0160] In some embodiments, the embodiments of the present disclosure provide a method for enhancing switching in an NTN. When performing cell reselection, the UE not only considers the instantaneous distance or the average distance at multiple time points, but also considers the trend of the change in position to select a satellite with a gradually decreasing distance. If the cell reselection is performed according to the measurement RSRP result, the average RSRP or the instantaneous RSRP cannot be referred to, but the RSRP trend needs to be referred to.

[0161] FIG. 2A is an interaction schematic diagram of a communication method according to an embodiment of the present disclosure. The method can be performed by the communication system described above. As shown in FIG. 2A, the method can include:

[0162] In step S2101, the network device sends configuration information to the terminal device.

[0163] In some embodiments, the terminal device can receive the configuration information. For example, the terminal device can receive the configuration information sent by the network device. For another example, the terminal device can also receive the configuration information sent by other entities.

[0164] In some embodiments, the configuration information can include a plurality of reference positions configured by the network device for a first candidate cell.

[0165] For example, the reference positions configured by the network device for the first candidate cell include reference position #1 and reference position #2.

[0166] In some embodiments, different reference positions correspond to different first measurement times.

[0167] In some embodiments, the network device can configure a plurality of candidate cells for the terminal device, and the configuration information can include a plurality of reference positions of each candidate cell.

[0168] In some embodiments, the configuration information can include ephemeris information configured by the network device for the first candidate cell.

[0169] In some embodiments, the network device can configure a plurality of candidate cells for the terminal device, and the configuration information can include ephemeris information of each candidate cell.

[0170] It should be understood that the first candidate cell is included in the plurality of candidate cells configured by the network device.

[0171] In step S2102, the terminal device measures a distance value from each reference position of the first candidate cell, and obtains a plurality of distance values corresponding to the first candidate cell.

[0172] In some embodiments, the measurement result is a distance value between the terminal device and the reference position.

[0173] In some embodiments, the first candidate cell can be any candidate cell in the plurality of candidate cells configured by the network device.

[0174] In some embodiments, the network device can configure a plurality of first measurement times, i.e., configure a corresponding first measurement time for each reference position.

[0175] In some embodiments, the configuration information can further include a first measurement time corresponding to each reference position.

[0176] For example, the network device configures a first measurement time T1 for reference position #1 of the first candidate cell, and configures a first measurement time T2 for reference position #2 of the first candidate cell.

[0177] In some embodiments, the terminal device can also autonomously determine a plurality of first measurement times.

[0178] In some embodiments, each first measurement time can also not be limited, and the terminal device can only determine a time sequence corresponding to the plurality of reference positions.

[0179] In some embodiments, the terminal device measures a distance from each reference position of the first candidate cell, and obtains a plurality of distance values corresponding to the first candidate cell.

[0180] For example, if the network device configures the first candidate cell with reference positions including reference position #1 and reference position #2, the first measurement time corresponding to the reference position #1 is T1, and the first measurement time corresponding to the reference position #2 is T2, the terminal device can measure the distance value from the reference position #1 at T1 and the distance value from the reference position #2 at T2 to obtain two distance values corresponding to the first candidate cell. For another example, if the network device configures the first candidate cell with reference positions including reference position #1 and reference position #2, the reference position #1 is before the reference position #2, the terminal device can first measure the distance value from the reference position #1 and then measure the distance value from the reference position #2 to obtain two distance values corresponding to the first candidate cell.

[0181] It should be noted that the terminal device can determine the distance value from the reference position of the first candidate cell according to the method of the existing protocol, and details are not described herein.

[0182] In some embodiments, at each first measurement time, the terminal device can measure the distance value from the reference position of each candidate cell configured by the network device. For example, if the network device configures multiple candidate cells including candidate cell #1, candidate cell #2, and candidate cell #3, each candidate cell is configured with reference positions including reference position #1 and reference position #2, the first measurement time corresponding to the reference position #1 is T1, and the first measurement time corresponding to the reference position #1 is T2, the terminal device can measure the distance value from the reference position #1 of each candidate cell at T1 and the distance value from the reference position #2 of each candidate cell at T2.

[0183] In some embodiments, the terminal device can determine the distance value from the reference position of the first candidate cell at multiple first measurement times according to the ephemeris information of the first candidate cell to obtain multiple distance values corresponding to the first candidate cell.

[0184] For example, at T1, the terminal device can determine the distance value from the reference position of the first candidate cell according to the ephemeris information of the first candidate cell; at T2, the terminal device can determine the distance value from the reference position of the first candidate cell according to the ephemeris information of the first candidate cell.

[0185] In some embodiments, at each first measurement time, the terminal device can also measure the distance value from the reference position of the serving cell.

[0186] In some embodiments, after one measurement is completed, if it is determined that the distance value between the terminal device and the reference position of the serving cell is greater than the first threshold value, and it is determined that the distance value between the terminal device and the reference position of each of the plurality of second candidate cells is less than the second threshold value, it indicates that the plurality of candidate cells all satisfy the access condition. The terminal device can further select one second candidate cell from the plurality of second candidate cells as a target cell.

[0187] In some embodiments, the terminal device can select any one of the plurality of second candidate cells as a first candidate cell, obtain the distance value between the terminal device and the reference position of the first candidate cell at a second measurement time, and the distance value between the terminal device and the reference position of the first candidate cell at a third measurement time, and determine whether the first candidate cell is a target cell according to the distance value corresponding to the first candidate cell measured at the second measurement time and the distance value corresponding to the first candidate cell measured at the third measurement time.

[0188] In some embodiments, the third measurement time can be the last first measurement time before the current time (including the current time) among the plurality of first measurement times, and the second measurement time can be any first measurement time before the third measurement time among the plurality of first measurement times. For example, if the first measurement time includes T1, T2, T3, and T4, the third measurement time is T3, and the second measurement time is T1 or T2.

[0189] For example, after measuring the distance value between the terminal device and the reference position #1 of each candidate cell and the distance value between the terminal device and the reference position of the serving cell at T3, if it is determined that the distance between the terminal device and the reference position of the serving cell at T3 is greater than the first threshold value, and the distance value between the terminal device and the reference position #3 of the candidate cell #1 and the distance value between the terminal device and the reference position #3 of the candidate cell #2 at T3 are both less than the second threshold value, the candidate cell #1 can be selected as a first candidate cell, and the distance value between the terminal device and the reference position #1 of the candidate cell #1 measured at T1 is obtained.

[0190] In some embodiments, the second measurement time can be the last first measurement time before the current time (including the current time) among the plurality of first measurement times, and the third measurement time can be any first measurement time after the second measurement time among the plurality of first measurement times. For example, if the first measurement time includes T1, T2, T3, and T4, the second measurement time is T2, and the third measurement time is T3 or T4.

[0191] For example, after measuring the distance value between the terminal device and the reference position #1 of each candidate cell and the distance value between the terminal device and the reference position of the serving cell at the T2 moment, if it is determined that the distance value between the terminal device and the reference position of the serving cell at the T2 moment is greater than the first threshold value, and the distance value between the terminal device and the reference position #2 of the candidate cell #1 and the distance value between the terminal device and the reference position #2 of the candidate cell #2 at the T2 moment are both less than the second threshold value, the candidate cell #1 can be selected as the first candidate cell, and the distance value between the terminal device and the reference position #3 of the candidate cell #1 is measured at the T3 moment.

[0192] In some embodiments, the first threshold value can be configured by the network device. For example, the first threshold value can be the measurement result when the serving cell satisfies the leaving condition.

[0193] In some embodiments, the definition of the first threshold value can refer to the definition of Thresh1 in EventD1 or EventD2 of the existing protocol, which will not be described herein.

[0194] It should be noted that the disclosure embodiments can determine the distance between the terminal device and the reference position of the serving cell according to the method of the existing protocol, which will not be described herein.

[0195] In some embodiments, if it is determined that the distance between the terminal device and the reference position of the serving cell is greater than the first threshold value, it indicates that the terminal device needs to perform cell switching.

[0196] In some embodiments, the second threshold value is less than the first threshold value.

[0197] In some embodiments, the second threshold value can be configured by the network device. For example, the second threshold value can be the measurement result when the candidate cell satisfies the entering condition.

[0198] In some embodiments, the definition of the second threshold value can refer to the definition of Thresh2 in EventD1 or EventD2 of the existing protocol, which will not be described herein.

[0199] In some embodiments, step S2102 can be performed within TTT, or can not be performed within TTT, and the disclosure embodiments do not limit this.

[0200] In step S2103, the terminal device determines that the distance value corresponding to the first candidate cell measured at the second measurement time is greater than the distance value corresponding to the first candidate cell measured at the third measurement time, and determines that the first candidate cell is the target cell.

[0201] It should be understood that the terminal device can select the second candidate cell with the distance value becoming smaller and smaller, i.e., the second candidate cell getting closer and closer to the terminal device, as the target cell.

[0202] Continuing with the example of step S2102, if the distance value between the terminal device and the reference position #3 of the candidate cell #1 measured at T3 is less than the distance value between the terminal device and the reference position #2 of the candidate cell #1 measured at T2, the candidate cell #1 is determined as the target cell.

[0203] It should be understood that if the distance value between the terminal device and the reference position #3 of the candidate cell #1 measured at T3 is greater than the distance value between the terminal device and the reference position #2 of the candidate cell #1 measured at T2, step S2102 can be continued to determine a new first candidate cell from the plurality of second candidate cells, for example, the candidate cell #2 is selected as the new first candidate cell, and it is determined whether the candidate cell #2 is the target cell.

[0204] It should be noted that for each second candidate cell, the second candidate cell can be determined as a first candidate cell to determine whether the first candidate cell can be the target cell. If it is determined that a plurality of second candidate cells can be the target cell, a second candidate cell can be selected as the target cell.

[0205] In some embodiments, step S2103 can be completed within TTT.

[0206] Step S2104, the terminal device accesses the target cell.

[0207] It should be noted that the terminal device can access the target cell by referring to the method of the existing protocol, which will not be described here.

[0208] By using the above method, the terminal device can select a candidate cell that is closer and closer to the terminal device from a plurality of candidate cells as the target cell, which reduces the frequency of cell switching of the terminal device, thereby improving the system performance.

[0209] The method related to the embodiments of the present disclosure can include at least one of the above steps S2101 to step S2104. For example, step S2101 can be implemented as an independent embodiment, step S2103 can be implemented as an independent embodiment, step S2101+step S2102 can be implemented as an independent embodiment, step S2102+step S2103 can be implemented as an independent embodiment, step S2103+step S2104 can be implemented as an independent embodiment, but is not limited thereto.

[0210] In some embodiments, any two steps among steps S2101 to step S2104 can be exchanged in order or executed simultaneously.

[0211] In some embodiments, steps S2101-S2104 are optional, and one or more of these steps can be omitted or replaced in different embodiments. For example, step S2104 can be omitted.

[0212] In some embodiments, other optional implementations can be found in the description before or after the description of FIG. 2A.

[0213] FIG. 2B is an interaction diagram of a communication method according to an embodiment of the present disclosure. The method can be performed by the communication system described above. As shown in FIG. 2B, the method can include:

[0214] Step S2201: The network device sends configuration information to the terminal device.

[0215] In some embodiments, the configuration information can include a reference signal of the first candidate cell.

[0216] In some embodiments, the network device can send a corresponding reference signal to the terminal device at each first measurement time.

[0217] In some embodiments, the network device can configure multiple candidate cells for the terminal device, and the configuration information can include multiple reference signals of each candidate cell.

[0218] It should be understood that the first candidate cell is included in the multiple candidate cells configured by the network device.

[0219] Step S2202: The terminal device measures the reference signal of the first candidate cell at multiple first measurement times to obtain multiple measurement results of the first candidate cell.

[0220] In some embodiments, the reference signal of the first candidate cell is measured at each first measurement time to obtain a measurement result of the first candidate cell at the first measurement time.

[0221] The measurement result can include at least one of the following: Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), and Signal to Interference plus Noise Ratio (SINR).

[0222] In some embodiments, the first measurement time can include T1, T2, T3, and T4.

[0223] For example, the terminal device measures the received reference signal at T1 to obtain a measurement result of the first candidate cell at T1; and measures the received reference signal at T2 to obtain a measurement result of the first candidate cell at T2.

[0224] In some embodiments, after completing a measurement, if it is determined that the measurement result of the reference signal of the serving cell is less than the third threshold value, and it is determined that the measurement result of the reference signal of each of the plurality of second candidate cells is greater than the fourth threshold value, it indicates that the plurality of candidate cells all satisfy the access condition. The terminal device can further select one second candidate cell from the plurality of second candidate cells as a target cell.

[0225] In some embodiments, the terminal device can select any one of the plurality of second candidate cells as the first candidate cell, obtain a measurement result of the first candidate cell at a second measurement time, and a measurement result of the first candidate cell at a third measurement time, and determine whether the first candidate cell is a target cell according to the measurement result of the first candidate cell at the second measurement time and the measurement result of the first candidate cell at the third measurement time.

[0226] In some embodiments, the third measurement time can be the last first measurement time before the current time (including the current time) among the plurality of first measurement times, and the second measurement time can be any first measurement time before the third measurement time among the plurality of first measurement times. For example, if the first measurement times include T1, T2, T3, and T4, the third measurement time is T3, and the second measurement time is T1 or T2.

[0227] For example, at T3, the reference signals of each candidate cell and the reference signal of the serving cell are measured, if it is determined that the measurement result of the serving cell at T3 is less than the third threshold value, and the measurement result of candidate cell #1 and the measurement result of candidate cell #2 at T3 are both greater than the fourth threshold value, candidate cell #1 can be selected as the first candidate cell, and the measurement result of candidate cell #1 at T1 is obtained.

[0228] In some embodiments, the second measurement time can be the last first measurement time before the current time (including the current time) among the plurality of first measurement times, and the third measurement time can be any first measurement time after the second measurement time among the plurality of first measurement times. For example, if the first measurement times include T1, T2, T3, and T4, the second measurement time is T2, and the third measurement time is T3 or T4.

[0229] For example, after measuring the measurement results of each candidate cell and the measurement result of the serving cell at T2, if it is determined that the measurement result of the serving cell at T2 is less than the third threshold value, and the measurement results of the candidate cell #1 and the candidate cell #2 at T2 are both greater than the second threshold value, the candidate cell #1 can be selected as the first candidate cell, and the reference signal of the candidate cell #1 is measured at T3.

[0230] In some embodiments, the third threshold value and the fourth threshold value can be configured by the network device. For example, the third threshold value can be the measurement result when the serving cell satisfies the leaving condition, and the fourth threshold value can be the measurement result when the candidate cell satisfies the entering condition.

[0231] It should be noted that the reference signals of the serving cell and the candidate cell can be measured according to the method of the existing protocol in the embodiments of the present disclosure, which will not be described here.

[0232] In some embodiments, if the measurement result of the reference signal of the serving cell is less than the third threshold value, it indicates that the terminal device needs to perform cell switching.

[0233] In some embodiments, the fourth threshold value is greater than the third threshold value.

[0234] In some embodiments, step S2202 can be performed within TTT, and step S2202 can also not be performed within TTT, which is not limited in the embodiments of the present disclosure.

[0235] In step S2203, the terminal device determines that the measurement result of the first candidate cell measured at the second measurement time is less than the measurement result of the first candidate cell measured at the third measurement time, and determines that the first candidate cell is the target cell.

[0236] It should be understood that the terminal device can select the second candidate cell with the measurement result that is getting larger and the signal quality that is getting better as the target cell.

[0237] Continuing to take the example of step S2202, if the measurement result of the candidate cell #1 measured at T3 is greater than the measurement result of the candidate cell #1 measured at T2, it is determined that the candidate cell #1 is the target cell.

[0238] It should be understood that if the measurement result of the candidate cell #1 measured at T3 is less than the measurement result of the candidate cell #1 measured at T2, step S2202 can be continued to determine a new first candidate cell from the plurality of second candidate cells, for example, the candidate cell #2 is selected as the new first candidate cell, and it is determined whether the candidate cell #2 is the target cell.

[0239] It should be noted that for each second candidate cell, the second candidate cell can be taken as a first candidate cell, and it is determined whether the first candidate cell can be taken as a target cell. If it is determined that multiple second candidate cells can be taken as target cells, one second candidate cell can be selected as a target cell.

[0240] In some embodiments, step S2203 can be completed within TTT.

[0241] Step S2204: The terminal device accesses the target cell.

[0242] It should be noted that the terminal device can access the target cell by referring to the method of the existing protocol, which will not be described here.

[0243] By using the above method, the terminal device can select a candidate cell with better and better signal quality from multiple candidate cells as a target cell, thereby reducing the frequency of cell switching of the terminal device, and improving the system performance.

[0244] The method related to the embodiments of the present disclosure can include at least one of the above steps S2201-S2204. For example, step S2201 can be implemented as an independent embodiment, step S2203 can be implemented as an independent embodiment, step S2201+step S2202 can be implemented as an independent embodiment, step S2202+step S2203 can be implemented as an independent embodiment, step S2203+step S2204 can be implemented as an independent embodiment, but is not limited thereto.

[0245] In some embodiments, the order of any two steps among steps S2201-S2204 can be exchanged or executed simultaneously.

[0246] In some embodiments, steps S2201-S2204 are optional, and one or more of these steps can be omitted or replaced in different embodiments. For example, step S2204 can be omitted.

[0247] In some embodiments, the names of information and the like 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", "codebook", "codeword", "codepoint", "bit", "data", "program", "chip", and the like can be replaced with each other.

[0248] In some embodiments, "acquire", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive", and the like can be replaced with each other, and can be interpreted as receiving from other subjects, acquiring from protocols, acquiring from higher layers, obtaining by self-processing, autonomously implementing, and the like.

[0249] In some embodiments, the terms "send", "transmit", "report", "issue", "transmit", "bidirectional transmission", "send and / or receive", and the like can be replaced with each other.

[0250] In some embodiments, the terms "certain", "preset", "pre-set", "set", "indicated", "certain", "arbitrary", "first", and the like can be replaced with each other, and "certain A", "preset A", "pre-set A", "set A", "indicated A", "certain A", "arbitrary A", "first A" can be interpreted as A specified in advance in protocols and the like, A obtained by setting, configuration, or indication, and the like, A specific, certain, arbitrary, or first A, and the like, but are not limited thereto.

[0251] FIG. 3A is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 3A, the present disclosure relates to a communication method, which can be performed by a terminal device. The method can include:

[0252] Step S3101, receiving configuration information.

[0253] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in FIG. 2A and other associated parts in the embodiments involved in FIG. 2A, which will not be described here.

[0254] Step S3102, measure the distance value of the terminal device from each reference position of the first candidate cell, to obtain a plurality of distance values corresponding to the first candidate cell.

[0255] The optional implementation of step S3102 can refer to the optional implementation of step S2102 in FIG. 2A and other associated parts in the embodiments involved in FIG. 2A, which will not be repeated here.

[0256] Step S3103, determine that the distance value corresponding to the first candidate cell measured at the second measurement time is greater than the distance value corresponding to the first candidate cell measured at the third measurement time, and determine that the first candidate cell is the target cell.

[0257] The optional implementation of step S3103 can refer to the optional implementation of step S2103 in FIG. 2A and other associated parts in the embodiments involved in FIG. 2A, which will not be repeated here.

[0258] Step S3104, access the target cell.

[0259] The optional implementation of step S3104 can refer to the optional implementation of step S2104 in FIG. 2A and other associated parts in the embodiments involved in FIG. 2A, which will not be repeated here.

[0260] The method involved in the disclosed embodiments can include at least one of steps S3101-S3104. For example, step S3101 can be implemented as an independent embodiment, step S3103 can be implemented as an independent embodiment, step S3101+step S3102 can be implemented as an independent embodiment, step S3102+step S3103 can be implemented as an independent embodiment, step S3103+step S3104 can be implemented as an independent embodiment, but is not limited thereto.

[0261] In some embodiments, any two steps among steps S3101-S3104 can be exchanged in order or executed simultaneously.

[0262] In some embodiments, steps S3101-S3104 are optional, and one or more of these steps can be omitted or replaced in different embodiments. For example, step S3104 can be omitted.

[0263] FIG. 3B is a flow diagram illustrating a communication method according to embodiments of the present disclosure. As shown in FIG. 3B, the embodiments of the present disclosure involve a communication method, which can be executed by a terminal device. The method can include:

[0264] Step S3201, receive configuration information.

[0265] The optional implementation of step S3201 can refer to the optional implementation of step S2201 in FIG. 2B and other associated parts in the embodiments related to FIG. 2B, which will not be repeated here.

[0266] Step S3202: measuring the reference signal of the first candidate cell at multiple first measurement times to obtain multiple measurement results of the first candidate cell.

[0267] The optional implementation of step S3202 can refer to the optional implementation of step S2202 in FIG. 2B and other associated parts in the embodiments related to FIG. 2B, which will not be repeated here.

[0268] Step S3203: determining that the measurement result of the first candidate cell measured at the second measurement time is less than the measurement result of the first candidate cell measured at the third measurement time, and determining that the first candidate cell is the target cell.

[0269] The optional implementation of step S3203 can refer to the optional implementation of step S2203 in FIG. 2B and other associated parts in the embodiments related to FIG. 2B, which will not be repeated here.

[0270] Step S3204: accessing the target cell.

[0271] The optional implementation of step S3204 can refer to the optional implementation of step S2204 in FIG. 2B and other associated parts in the embodiments related to FIG. 2B, which will not be repeated here.

[0272] The method related to the embodiments of the present disclosure can include at least one of the above steps S3201-S3204. For example, step S3201 can be implemented as an independent embodiment, step S3203 can be implemented as an independent embodiment, step S3201+step S3202 can be implemented as an independent embodiment, step S3202+step S3203 can be implemented as an independent embodiment, step S3203+step S3204 can be implemented as an independent embodiment, but is not limited thereto.

[0273] In some embodiments, the order between any two steps of steps S3201-S3204 can be exchanged or executed simultaneously.

[0274] In some embodiments, steps S3201-S3204 are optional, and one or more of these steps can be omitted or replaced in different embodiments. For example, step S3204 can be omitted.

[0275] FIG. 3C is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 3C, the embodiments of the present disclosure relate to a communication method, which can be performed by a terminal device. The method can include the following steps.

[0276] In step S3301, configuration information is received.

[0277] The optional implementation of step S3301 can refer to the optional implementation of step S2101 in FIG. 2A, step S2201 in FIG. 2B, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B, which will not be described here.

[0278] In step S3302, multiple measurements are performed on the first candidate cell according to the configuration information, to obtain multiple measurement results of the first candidate cell.

[0279] The optional implementation of step S3302 can refer to the optional implementation of step S2102 in FIG. 2A, step S2202 in FIG. 2B, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B, which will not be described here.

[0280] In step S3303, it is determined whether the first candidate cell is a target cell according to the change of the multiple measurement results of the first candidate cell.

[0281] The optional implementation of step S3303 can refer to the optional implementation of step S2103 in FIG. 2A, step S2203 in FIG. 2B, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B, which will not be described here.

[0282] In some embodiments, the configuration information includes multiple reference positions configured by the network device for the first candidate cell.

[0283] The multiple measurements performed on the first candidate cell according to the configuration information to obtain the multiple measurement results of the first candidate cell include:

[0284] The distance value between the terminal device and each reference position of the first candidate cell is measured to obtain multiple distance values corresponding to the first candidate cell, and different reference positions correspond to different first measurement times.

[0285] In some embodiments, the configuration information includes ephemeris information configured by the network device for the first candidate cell; and the multiple measurements performed on the first candidate cell according to the configuration information to obtain the multiple measurement results of the first candidate cell include:

[0286] According to ephemeris information of the first candidate cell, distance values between the terminal device and reference positions of the first candidate cell are determined at a plurality of first measurement times, to obtain a plurality of distance values corresponding to the first candidate cell.

[0287] In some embodiments, the determining whether the first candidate cell is the target cell according to the changes of the plurality of measurement results of the first candidate cell comprises:

[0288] It is determined that a distance value corresponding to the first candidate cell measured at a second measurement time is greater than a distance value corresponding to the first candidate cell measured at a third measurement time, the second measurement time and the third measurement time are both included in the plurality of first measurement times, and the second measurement time is before the third measurement time.

[0289] It is determined that the first candidate cell is the target cell.

[0290] In some embodiments, the method further comprises:

[0291] It is determined that a distance value between the terminal device and a reference position of a serving cell is greater than a first threshold value.

[0292] It is determined that a distance value between the terminal device and a reference position of each second candidate cell in a plurality of second candidate cells is less than a second threshold value, the first candidate cell is included in the plurality of second candidate cells, and the second threshold value is less than the first threshold value.

[0293] In some embodiments, the configuration information further comprises a first measurement time corresponding to each reference position.

[0294] In some embodiments, the configuration information comprises a plurality of reference signals of the first candidate cell, and the measurement result comprises at least one of the following:

[0295] Reference signal received power (RSRP);

[0296] Reference signal received quality (RSRQ);

[0297] Signal to noise and interference ratio (SINR);

[0298] The plurality of measurement results of the first candidate cell are obtained by measuring the first candidate cell according to the configuration information, and the plurality of measurement results of the first candidate cell comprise:

[0299] The plurality of measurement results of the first candidate cell are obtained by measuring reference signals of the first candidate cell at a plurality of first measurement times, and different reference signals correspond to different first measurement times.

[0300] In some embodiments, the determining whether the first candidate cell is the target cell according to the change of the measurement results of the first candidate cell comprises:

[0301] determining that the measurement result of the first candidate cell measured at a second measurement time is less than the measurement result of the first candidate cell measured at a third measurement time, the second measurement time and the third measurement time are both included in the plurality of first measurement times, and the second measurement time is before the third measurement time;

[0302] determining that the first candidate cell is the target cell.

[0303] In some embodiments, the method further comprises:

[0304] determining that the measurement result of the serving cell of the terminal device is less than a third threshold value;

[0305] determining that the measurement result of each second candidate cell in a plurality of second candidate cells is greater than a fourth threshold value, the first candidate cell is included in the plurality of second candidate cells, and the fourth threshold value is greater than the third threshold value.

[0306] In some embodiments, the method further comprises:

[0307] determining that the first candidate cell is the target cell, and accessing the target cell.

[0308] FIG. 4 is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 4, the embodiments of the present disclosure relate to a communication method, which can be performed by a network device. The method can comprise:

[0309] S4101: transmitting configuration information.

[0310] The optional implementation of step S4101 can refer to the optional implementation of step S2101 in FIG. 2A, step S2201 in FIG. 2B, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B, which will not be described here.

[0311] In some embodiments, the configuration information comprises a plurality of reference positions configured by the network device for the first candidate cell, different reference positions correspond to different first measurement times, and the reference positions are used by the terminal device to measure the first candidate cell to obtain the measurement result of the first candidate cell.

[0312] In some embodiments, the configuration information further comprises the first measurement time corresponding to each reference position.

[0313] In some embodiments, the configuration information comprises ephemeris information configured by the network device for the first candidate cell.

[0314] In some embodiments, the configuration information comprises a plurality of reference signals of the first candidate cell, the reference signals being used for the terminal device to measure the first candidate cell to obtain a measurement result of the first candidate cell.

[0315] The measurement result comprises at least one of:

[0316] Reference Signal Received Power (RSRP);

[0317] Reference Signal Received Quality (RSRQ);

[0318] Signal to Noise and Interference Ratio (SINR).

[0319] FIG. 5 is an interaction diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 5, the embodiment of the present disclosure relates to a communication method, which can be performed by a communication system. The method can comprise:

[0320] In step S5101, the network device sends configuration information to the terminal device.

[0321] The optional implementation of step S5101 can refer to the optional implementation of step S2101 in FIG. 2A, step S2201 in FIG. 2B, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B, which will not be described here.

[0322] In step S5102, the terminal device performs multiple measurements on the first candidate cell according to the configuration information to obtain a plurality of measurement results of the first candidate cell.

[0323] The optional implementation of step S5102 can refer to the optional implementation of step S2102 in FIG. 2A, step S2202 in FIG. 2B, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B, which will not be described here.

[0324] In step S5103, the terminal device determines whether the first candidate cell is a target cell according to the change of the plurality of measurement results of the first candidate cell.

[0325] The optional implementation of step S5103 can refer to the optional implementation of step S2103 in FIG. 2A, step S2203 in FIG. 2B, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B, which will not be described here.

[0326] In some embodiments, the above method can comprise the method described in the embodiments of the above communication system, terminal device, network device, etc., which will not be described here.

[0327] In some embodiments, the location-based Event D1 and Event D2 are enhanced.

[0328] In some embodiments, when CHO condition (e.g. Condevent D1, Condevent D2) is met, the UE selects and the distance between the UE and the candidate cell is getting closer / smaller.

[0329] In some embodiments, if multiple candidate cells are getting closer / smaller to the UE, the UE implements selection of one candidate cell as target cell based on the distance between the UE and the candidate cell.

[0330] In some embodiments, for Event D1, in order to calculate the Ml of the candidate target cell at different time, the base station needs to configure the UE with the reference location of the same candidate target cell at multiple different time.

[0331] Optionally, from the perspective of base station configuration, the original configuration of one reference location for one candidate target cell is changed to multiple reference locations for one candidate target cell.

[0332] Optionally, time information can also be configured for the reference location, or the order of the default reference location is the time order.

[0333] Optionally, from the perspective of UE behavior, the UE needs to calculate the distance between different reference locations respectively, and evaluate whether the distance is getting smaller over time.

[0334] In some embodiments, for Event D2, in order to calculate the Ml of the candidate target cell at different time, the UE can determine it through the ephemeris information of the candidate target cell configured in the reportConfigNR for the event. That is, based on the ephemeris information, the satellite position / reference location at different time can be determined.

[0335] Optionally, from the perspective of base station configuration, the configuration content remains unchanged.

[0336] Optionally, from UE behavior perspective, UE needs to calculate satellite position / reference location at different time respectively, and calculate the distance between UE and satellite position / reference location at different time, and evaluate whether the distance is getting smaller and smaller over time.

[0337] Embodiment 1, UE shall select cell#1 to initiate access:

[0338] Base station configures reference location#1 and reference location#2 for candidate target cell, the time corresponding to reference location#1 is earlier than the time corresponding to reference location#2, UE needs to satisfy Inequality D3-1, Inequality D3-2 and Inequality D3-3 at the same time, in order to determine target cell.

[0339] Inequality D3-1 (entry condition 1): Ml1-Hys>Thresh1;

[0340] Inequality D3-2 (entry condition 2): Ml21+Hys<Thresh2;

[0341] Inequality D3-2 (entry condition 2): Ml31+Hys<Thresh2;

[0342] Wherein, Ml1 is the distance between UE and reference location of serving cell; Ml21 is the distance between UE and reference location#1 of candidate target cell#1; Ml31 is the distance between UE and reference location#1 of candidate target cell#2.

[0343] Optionally, Ml21 can also be replaced by Ml22, and Ml31 can also be replaced by Ml32.

[0344] Inequality D3-3: Ml22-Ml21<0;

[0345] Inequality D3-3: Ml32-Ml31>0;

[0346] Wherein, Ml22 is the distance between the UE and the reference location#2 of the candidate target cell#1; Ml32 is the distance between the UE and the reference location#2 of the candidate target cell#2.

[0347] In some embodiments, the above condition needs to be completed within the TTT (time to trigger), the time corresponding to the reference location#1 and the time corresponding to the reference location#2 can be within the TTT or not within the TTT, and the embodiments of the present disclosure do not limit this. The UE does not need to know the exact time point, but only needs to know the sequence of the corresponding time.

[0348] Embodiment 2, the UE should select cell#1 to initiate access:

[0349] The base station configures the ephemeris information of the candidate target cell, and the UE needs to simultaneously satisfy Inequality D3-1, Inequality D3-2 and Inequality D3-3 to determine the target cell.

[0350] At T1 moment:

[0351] Inequality D3-1 (entry condition 1): Ml1-Hys> Thresh1;

[0352] Inequality D3-2 (entry condition 2): Ml2 T1 +Hys<Thresh2;

[0353] Inequality D3-2 (entry condition 2): Ml3 T1 +Hys<Thresh2;

[0354] Wherein, Ml2 T1 is the distance between the UE and the reference location#2 of the candidate target cell#1; Ml32 is the distance between the UE and the reference location#2 of the candidate target cell#2. T1 is the distance between the UE and the reference location#2 of the candidate target cell#1; Ml32 is the distance between the UE and the reference location#2 of the candidate target cell#2.

[0355] Optionally, here Ml2 T1 may also be replaced by Ml2 T2 , Ml3 T1 may also be replaced by Ml3 T2 .

[0356] At T2 (T2 is later than T1):

[0357] Inequality D3-2: Ml2 T2 -Ml2 T1 <0;

[0358] Inequality D3-2: Ml3 T2 -Ml3 T1 >0;

[0359] wherein, Ml2 T2 is the distance between the UE and the reference location determined by the UE based on the ephemeris information at T2, and similarly, Ml3 T2 is the distance between the UE and the reference location determined by the UE based on the ephemeris information at T2.

[0360] In some embodiments, one determination of T1 and T2 is that T1 and T2 are any time within TTT, and T2 is later than T1.

[0361] In some embodiments of the present disclosure, a communication system is provided, which can include a terminal device and a network device, wherein the terminal device can perform the communication method performed by the terminal device in the foregoing embodiments of the present disclosure; and the network device can perform the communication method performed by the network device in the foregoing embodiments of the present disclosure.

[0362] The embodiments of the present disclosure also propose an apparatus for implementing any of the above methods, for example, an apparatus including units or modules for implementing the steps performed by the terminal in any of the above methods. For another example, another apparatus is also proposed, which includes units or modules for implementing the steps performed by the network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0363] It should be understood that the division of each unit or module in the above apparatus is only a logical function division, and all or part of them can be integrated into a physical entity or physically separated in actual implementation. In addition, the units or modules in the apparatus can be implemented in the form of processor calling software: for example, the apparatus includes a processor, the processor is connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to realize any of the above methods or realize the functions of each unit or module of the above apparatus, wherein the processor is a general processor such as a central processing unit (CPU) or a microprocessor, and the memory is a memory in the apparatus or a memory outside the apparatus. Alternatively, the units or modules in the apparatus can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be realized by the design of hardware circuit. The above hardware circuit can be understood as one or more processors; for example, in one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are realized by the design of the logical relationship of elements in the circuit; for another example, in another implementation, the above hardware circuit is a programmable logic device (PLD), and a field programmable gate array (FPGA) is taken as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to realize the functions of part or all of the above units or modules. All units or modules of the above apparatus can be all implemented in the form of processor calling software, or all implemented in the form of hardware circuit, or part implemented in the form of processor calling software and the remaining part implemented in the form of hardware circuit.

[0364] In embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), or the like. In another implementation, the processor can implement certain functions through a logical relationship of hardware circuit, and the logical relationship of the 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 the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of some or all of the units or modules described above. In addition, the hardware circuit can also be 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), or the like.

[0365] FIG. 6A is a structural schematic diagram of a terminal device according to an embodiment of the present disclosure. As shown in FIG. 6A, the terminal device 101 can include at least one of a transceiver module 6101, a processing module 6102, and the like. In some embodiments, the transceiver module 6101 is configured to receive configuration information sent by a network device; the processing module 6102 is configured to perform multiple measurements on a first candidate cell according to the configuration information to obtain multiple measurement results of the first candidate cell; and the processing module 6102 is further configured to determine whether the first candidate cell is a target cell according to a change of the multiple measurement results of the first candidate cell. Optionally, the transceiver module 6101 can be configured to perform at least one of the communication steps (for example, step S2101, but not limited thereto) of the receiving and / or sending performed by the terminal device 101 in any of the methods described above. Details are not described herein again. Optionally, the processing module 6102 can be configured to perform at least one of the other steps (for example, step S2102, step S2103, and step S2104, but not limited thereto) performed by the terminal device 101 in any of the methods described above. Details are not described herein again.

[0366] In some embodiments, the transceiver module can include a transmitting module and / or a receiving module, which can be separate or integrated together. Optionally, the transceiver module can be mutually replaced with a transceiver.

[0367] In some embodiments, the processing module can be one module or include multiple sub-modules. Optionally, the multiple sub-modules perform all or part of the steps required to be performed by the processing module. Optionally, the processing module can be mutually replaced with a processor.

[0368] FIG. 6B is a structural schematic diagram of a network device according to an embodiment of the present disclosure. As shown in FIG. 6B, the network device 102 can include at least one of a transceiver module 6201, a processing module 6202, and the like. In some embodiments, the transceiver module 6201 is configured to send configuration information to a terminal device, where the configuration information is used by the terminal device to perform multiple measurements on a first candidate cell, to obtain multiple measurement results of the first candidate cell, and to determine whether the first candidate cell is a target cell according to a change in the multiple measurement results of the first candidate cell. Optionally, the transceiver module 6201 can be used to perform at least one of the communication steps (for example, step S2101, but not limited to this) of the sending and / or receiving performed by the network device 102 in any of the above methods, and details are not described herein again. Optionally, the processing module 6202 can be used to perform at least one of the other steps performed by the network device 102 in any of the above methods, and details are not described herein again.

[0369] In some embodiments, the transceiver module can include a transmitting module and / or a receiving module, which can be separate or integrated together. Optionally, the transceiver module can be mutually replaced with a transceiver.

[0370] In some embodiments, the processing module can be one module or include multiple sub-modules. Optionally, the multiple sub-modules perform all or part of the steps required to be performed by the processing module. Optionally, the processing module can be mutually replaced with a processor.

[0371] FIG. 7A is a structural schematic diagram of a communication device 7100 according to an embodiment of the present disclosure. The communication device 7100 can be a network device (for example, an access network device, a core network device, and the like), a terminal (for example, a user equipment, and the like), a chip, a chip system, or a processor supporting the first device to implement any of the above methods, or a chip, a chip system, or a processor supporting the terminal to implement any of the above methods. The communication device 7100 can be used to implement the methods described in the above method embodiments, and details can be referred to the descriptions in the above method embodiments.

[0372] As shown in FIG. 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general processor or a special-purpose processor, etc., for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, the central processing unit can be used to control the communication device (e.g., a base station, a baseband chip, an Internet of Things device, an Internet of Things device chip, a DU or a CU, etc.), execute programs, and process data of the programs. The communication device 7100 is configured to perform any of the above methods.

[0373] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memory 7102 can also be outside the communication device 7100.

[0374] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the transceiver 7103 performs at least one of the communication steps (e.g., step S2101, but not limited to) in the above methods, and the processor 7101 performs at least one of the other steps (e.g., step S2102, but not limited to).

[0375] In some embodiments, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Optionally, the terms transceiver, transceiving unit, transceiver, transceiving circuit, etc. can be replaced by each other, the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced by each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. can be replaced by each other.

[0376] In some embodiments, the communication device 7100 can include one or more interface circuits. Optionally, the interface circuit is connected to the memory 7102, and the interface circuit can be used to receive signals from the memory 7102 or other devices, and can be used to send signals to the memory 7102 or other devices. For example, the interface circuit can read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0377] The communication device 7100 described in the above embodiments can be the first device or the IoT device, 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 can not be limited by FIG. 7A. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: 1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally also include storage components for storing data, programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, an IoT device, a smart IoT device, a cellular phone, a wireless device, a handset, a mobile unit, a car device, a first device, a cloud device, an artificial intelligence device, and the like; (6) other devices, and the like.

[0378] FIG. 7B is a structural diagram of a chip 7200 according to an embodiment of the present disclosure. For the case where the communication device 7100 is a chip or a chip system, the structural diagram of the chip 7200 shown in FIG. 7B can be referred to, but is not limited thereto.

[0379] The chip 7200 includes one or more processors 7201, and the chip 7200 is configured to execute any of the above methods.

[0380] In some embodiments, the chip 7200 further includes one or more interface circuits 7203. The interface circuit 7203 can be connected to the memory 7202, and the interface circuit 7203 can be configured to receive signals from the memory 7202 or other devices, and the interface circuit 7203 can be configured to send signals to the memory 7202 or other devices. For example, the interface circuit 7203 can read instructions stored in the memory 7202 and send the instructions to the processor 7201.

[0381] In some embodiments, the interface circuit 7203 performs at least one of the communication steps (for example, step S2101, but not limited thereto) of the above-described methods, and the processor 7201 performs at least one of the other steps (for example, step S2102, but not limited thereto).

[0382] In some embodiments, the terms interface circuit, interface, transceiver pin, and transceiver can be replaced with each other.

[0383] In some embodiments, the chip 7200 further includes one or more memories 7202 for storing instructions. Optionally, all or part of the memory 7202 can be outside the chip 7200.

[0384] The embodiments of the present disclosure further provide a storage medium having stored instructions, which, when executed on the communication device 7100, cause the communication device 7100 to perform any of the above methods. Alternatively, the storage medium is an electronic storage medium. Alternatively, the storage medium is a computer-readable storage medium, but is not limited to this, and can also be a storage medium readable by other devices. Alternatively, the storage medium can be a non-transitory storage medium, but is not limited to this, and can also be a transitory storage medium.

[0385] The embodiments of the present disclosure further provide a program product, which, when executed by the communication device 7100, causes the communication device 7100 to perform any of the above methods. Alternatively, the program product can be a computer program product.

[0386] The embodiments of the present disclosure further provide a computer program, which, when executed on a computer, causes the computer to perform any of the above methods.

Claims

1. A communication method characterized by comprising: The method is performed by a terminal device, and the method comprises: receiving configuration information sent by a network device; performing multiple measurements on a first candidate cell according to the configuration information to obtain multiple measurement results of the first candidate cell; determining whether the first candidate cell is a target cell according to a change of the multiple measurement results of the first candidate cell.

2. The method of claim 1, wherein, The configuration information comprises multiple reference positions configured by the network device for the first candidate cell. The performing multiple measurements on the first candidate cell according to the configuration information to obtain multiple measurement results of the first candidate cell comprises: measuring a distance value between the terminal device and each reference position of the first candidate cell to obtain multiple distance values corresponding to the first candidate cell, different reference positions corresponding to different first measurement times.

3. The method of claim 1, wherein, The configuration information comprises ephemeris information configured by the network device for the first candidate cell; and the performing multiple measurements on the first candidate cell according to the configuration information to obtain multiple measurement results of the first candidate cell comprises: determining a distance value between the terminal device and a reference position of the first candidate cell at multiple first measurement times according to the ephemeris information of the first candidate cell to obtain multiple distance values corresponding to the first candidate cell.

4. The method according to claim 2 or 3, characterized in that, The determining whether the first candidate cell is the target cell according to the change of the multiple measurement results of the first candidate cell comprises: determining that a distance value corresponding to the first candidate cell measured at a second measurement time is greater than a distance value corresponding to the first candidate cell measured at a third measurement time, the second measurement time and the third measurement time being included in the multiple first measurement times, the second measurement time being before the third measurement time; determining that the first candidate cell is the target cell.

5. The method according to any one of claims 2-4, characterized in that, The method further comprises: determining that a distance value between the terminal device and a reference position of a serving cell is greater than a first threshold value; determining that a distance value between the terminal device and a reference position of each second candidate cell in multiple second candidate cells is less than a second threshold value, the first candidate cell being included in the multiple second candidate cells, the second threshold value being less than the first threshold value.

6. The method of claim 2, wherein, The configuration information further comprises a first measurement time corresponding to each reference position.

7. The method of claim 1, wherein, The configuration information comprises multiple reference signals of the first candidate cell, and the measurement result comprises at least one of the following: reference signal received power (RSRP); reference signal received quality (RSRQ); signal to noise and interference ratio (SINR); The performing multiple measurements on the first candidate cell according to the configuration information to obtain multiple measurement results of the first candidate cell comprises: performing measurements on reference signals of the first candidate cell at multiple first measurement times to obtain multiple measurement results of the first candidate cell, different reference signals corresponding to different first measurement times.

8. The method of claim 7, wherein, The determining whether the first candidate cell is the target cell according to the change of the multiple measurement results of the first candidate cell comprises: determining that a measurement result of the first candidate cell measured at a second measurement time is less than a measurement result of the first candidate cell measured at a third measurement time, the second measurement time and the third measurement time are both included in the plurality of first measurement times, and the second measurement time is before the third measurement time; determining that the first candidate cell is the target cell.

9. The method of claim 8, wherein, The method further includes: determining that a measurement result of a serving cell of the terminal device is less than a third threshold value; determining that a measurement result of each of a plurality of second candidate cells is greater than a fourth threshold value, the first candidate cell is included in the plurality of second candidate cells, and the fourth threshold value is greater than the third threshold value.

10. The method according to any one of claims 1 to 9, characterized in that, The method further includes: determining that the first candidate cell is the target cell, and accessing the target cell.

11. A communication method, comprising: The method is performed by a network device, and includes: sending, by a network device, configuration information to a terminal device, the configuration information being used for the terminal device to perform multiple measurements on a first candidate cell to obtain a plurality of measurement results of the first candidate cell, and determining whether the first candidate cell is a target cell according to a change of the plurality of measurement results of the first candidate cell.

12. The method of claim 11, wherein, The configuration information includes a plurality of reference positions configured by the network device for the first candidate cell, different reference positions correspond to different first measurement times, and the reference positions are used for the terminal device to perform measurements on the first candidate cell to obtain measurement results of the first candidate cell.

13. The method of claim 12, wherein, The configuration information further includes a first measurement time corresponding to each reference position.

14. The method of claim 11, wherein, The configuration information includes ephemeris information configured by the network device for the first candidate cell.

15. The method of claim 11, wherein, The configuration information includes a plurality of reference signals of the first candidate cell, and the reference signals are used for the terminal device to perform measurements on the first candidate cell to obtain measurement results of the first candidate cell. The measurement results include at least one of the following: reference signal received power (RSRP); reference signal received quality (RSRQ); signal to noise and interference ratio (SINR).

16. A terminal device, comprising: The method includes: a transceiver module configured to receive configuration information sent by a network device; a processing module configured to perform multiple measurements on a first candidate cell according to the configuration information to obtain a plurality of measurement results of the first candidate cell; the processing module is further configured to determine whether the first candidate cell is a target cell according to a change of the plurality of measurement results of the first candidate cell.

17. A network device, comprising: The method includes: a transceiver module configured to send configuration information to a terminal device, the configuration information being used for the terminal device to perform multiple measurements on a first candidate cell to obtain a plurality of measurement results of the first candidate cell, and determining whether the first candidate cell is a target cell according to a change of the plurality of measurement results of the first candidate cell.

18. A communication device, characterized by characterized in that it comprises: one or more processors; The communication device is configured to perform the communication method of any one of claims 1 to 10 or claims 11 to 15.

19. A storage medium, the storage medium storing instructions, wherein, When the instructions are executed on the communication device, the communication device is caused to perform the communication method according to any one of claims 1-10 or claims 11-15.

20. A communication system, characterized by The communication system comprises a terminal device configured to implement the communication method according to any one of claims 1-10 and a network device configured to implement the communication method according to any one of claims 11-15.

21. A computer program product comprising a computer program, characterized in that, The computer program, when executed by a communication device, implements the communication method according to any one of claims 1-10 or claims 11-15.

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