Communication methods, devices, system and storage medium

Abstract

The embodiments of the present disclosure relate to the technical field of communications. Disclosed are communication methods, apparatuses and a computer-readable storage medium. A communication method comprises: receiving a first handover command, wherein the first handover command comprises a first parameter; on the basis of the first parameter, determining a first time domain of a signal to be measured which is used for synchronization; and on the basis of the first time domain, determining a second time domain for performing scheduling restriction on a current serving cell. In the embodiments of the present disclosure, determining, on the basis of a first time domain of a signal to be measured which is used for synchronization, a second time domain for performing scheduling restriction on a current serving cell can reduce scheduling restrictions, thereby narrowing down the time domain range for scheduling restrictions.

Description

Communication method, device, system and storage medium Technical Field

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

[0002] Non-Terrestrial Networks (NTNs) can support both hard and soft handovers between satellites without changing the Physical Cell ID (PCI). Compared to hard handovers, soft handovers can maintain a connection to the source satellite while performing measurements on the target satellite to achieve downlink synchronization.

[0003] Summary of the Invention

[0004] Embodiments of the present disclosure provide a communication method, device, system, and storage medium.

[0005] According to a first aspect of the present disclosure, a communication method is provided. The method is executed by a terminal, and the method includes:

[0006] receiving a first switching command, wherein the first switching command includes a first parameter;

[0007] Determining a first time domain of a signal to be measured for synchronization based on the first parameter;

[0008] Based on the first time domain, a second time domain for performing scheduling restrictions on the current serving cell is determined.

[0009] A second aspect of the present disclosure provides a communication method, which is performed by a network device and includes:

[0010] A first switching command is sent, where the first switching command includes a first parameter, where the first parameter is used to determine a first time domain of a signal to be measured for synchronization.

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

[0012] A first transceiver module is configured to receive a first switching command, where the first switching command includes a first parameter;

[0013] The first processing module is configured to determine a first time domain of a signal to be measured for synchronization based on the first parameter, and determine a second time domain for performing scheduling restrictions on a current serving cell based on the first time domain.

[0014] A fourth aspect of the embodiments of the present disclosure provides a network device, including:

[0015] The second transceiver module is configured to send a first switching command, where the first switching command includes a first parameter, and the first parameter is used to determine a first time domain of the signal to be measured for synchronization.

[0016] According to a fifth aspect of the present disclosure, a terminal is provided, including:

[0017] one or more processors;

[0018] The terminal is used to execute the optional implementation of the aforementioned first aspect.

[0019] According to a sixth aspect of the present disclosure, a network device is provided, including:

[0020] one or more processors;

[0021] The network device is used to execute the optional implementation method of the aforementioned second aspect.

[0022] In a seventh aspect of an embodiment of the present disclosure, a communication system is proposed, including a terminal and a network device, wherein the terminal is used to implement the method described in the optional implementation manner of the first aspect, and the network device is used to implement the method described in the optional implementation manner of the second aspect.

[0023] According to an eighth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, in which executable instructions are stored. The executable instructions are loaded and executed by the processor to implement the method described in the optional implementation of the first or second aspect above.

[0024] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0026] FIG1a is a schematic structural diagram of a wireless communication system according to an exemplary embodiment;

[0027] FIG1b is a schematic structural diagram of an NTN system according to an exemplary embodiment;

[0028] FIG2a is a flow chart showing a communication method according to an exemplary embodiment;

[0029] FIG2 b is a first schematic diagram of time domain resources corresponding to SSB according to an embodiment of the present disclosure;

[0030] FIG2c is a second schematic diagram of time domain resources corresponding to SSB according to an embodiment of the present disclosure;

[0031] FIG2 d is a third schematic diagram of time domain resources corresponding to SSB according to an embodiment of the present disclosure;

[0032] FIG2e is a fourth schematic diagram of time domain resources corresponding to SSB according to an embodiment of the present disclosure;

[0033] FIG3a is a flow chart of a communication method according to an embodiment of the present disclosure;

[0034] FIG3 b is a flow chart of a communication method according to an embodiment of the present disclosure;

[0035] FIG4a is a flow chart of a communication method according to an embodiment of the present disclosure;

[0036] FIG4 b is a flow chart of a communication method according to an embodiment of the present disclosure;

[0037] FIG5 is a flow chart of a communication method according to an embodiment of the present disclosure;

[0038] FIG6 a is a schematic structural diagram of a terminal proposed in an embodiment of the present disclosure;

[0039] FIG6 b is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure;

[0040] FIG7a is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure;

[0041] FIG7 b is a schematic diagram of the structure of the chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0042] The embodiments of the present disclosure provide a communication method, a device, a communication system, and a storage medium.

[0043] In a first aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

[0044] receiving a first switching command, wherein the first switching command includes a first parameter;

[0045] Determining a first time domain of a signal to be measured for synchronization based on the first parameter;

[0046] Based on the first time domain, a second time domain for performing scheduling restrictions on the current serving cell is determined.

[0047] In the above embodiment, the scheduling restriction can be reduced by determining the second time domain for performing scheduling restriction on the current serving cell based on the first time domain of the signal to be measured for synchronization.

[0048] In conjunction with some embodiments of the first aspect, in some embodiments, determining a first time domain of the signal to be measured for synchronization based on the first parameter includes:

[0049] determining the first time domain based on the first parameter and the second parameter;

[0050] The second parameter represents the propagation delay difference between the service link propagation delay of the current service cell and the service link propagation delay of the adjacent cell.

[0051] In conjunction with some embodiments of the first aspect, in some embodiments, determining, based on the first time domain, a second time domain for performing scheduling restrictions on the current serving cell includes:

[0052] determining whether to execute the first switching command based on the first time domain and the first time window;

[0053] If it is determined to execute the first switching command, the second time domain is determined to be one of the following:

[0054] the first time window;

[0055] at least one time unit before the first time domain within a first time window, and / or at least one time unit after the first time domain within the first time window;

[0056] The first time window is configured by a network device.

[0057] In the above embodiment, based on the first time domain and the first time window of the measured signal for synchronization, when it is determined to execute the first switching command, the second time domain for scheduling restrictions on the current service cell can be determined to be the first time window, or to be at least one time unit before or after the first time domain within the first time window, thereby narrowing the time domain range of the scheduling restriction.

[0058] In conjunction with some embodiments of the first aspect, in some embodiments, determining whether to execute the first handover command based on the first time domain and the first time window includes:

[0059] If the first time domain is within the first time window, determining to execute the first switching command;

[0060] If the first time domain is outside the first time window, it is determined not to execute the first switching command, and to execute the second switching command.

[0061] In the above embodiment, whether to execute the first time window is determined based on the positional relationship between the first time domain of the measured signal to be synchronized and the first time window. If the first time domain is outside the first time window, it is determined not to execute the first switching command but to execute the second switching command, thereby eliminating the need to consider scheduling restrictions.

[0062] In conjunction with some embodiments of the first aspect, in some embodiments, if the terminal has a capability of supporting scheduling restriction enhancement, the method further includes:

[0063] A first message is sent to a network device, where the first message includes the second parameter, and the second parameter is used by the network device to determine the first time domain and the second time domain.

[0064] In the above embodiment, when the terminal has the ability to support enhanced scheduling restrictions, the transmission delay difference can be sent to the network device so that the network device can determine the first time domain of the measured signal for synchronization, and further determine the second time domain for scheduling restrictions on the current service cell, thereby ensuring the consistency of the second time domain determined by the network device and the terminal.

[0065] In conjunction with some embodiments of the first aspect, in some embodiments, determining, based on the first time domain, a second time domain for performing scheduling restrictions on the current serving cell includes at least one of the following:

[0066] determining the second time domain as the first time domain;

[0067] Determining that the second time domain is at least one time unit before the first time domain;

[0068] determining that the second time domain is at least one time unit after the first time domain;

[0069] In the above embodiment, the first time window configured by the network device can be ignored, and the second time domain for scheduling restrictions on the current service cell can be determined directly based on the first time domain of the measured signal used for synchronization, as the first time domain, or as at least one time unit before or after the first time domain, thereby narrowing the time domain range of the scheduling restriction and not being limited to the first time window, which is more flexible.

[0070] In a second aspect, an embodiment of the present disclosure provides a communication method, which is performed by a network device and includes:

[0071] A first switching command is sent, where the first switching command includes a first parameter, where the first parameter is used to determine a first time domain of a signal to be measured for synchronization.

[0072] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0073] receiving a first message sent by a terminal, where the first message includes a second parameter;

[0074] The second parameter represents a propagation delay difference between a service link propagation delay of a current service cell of the terminal and a service link propagation delay of a neighboring cell.

[0075] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0076] determining the first time domain based on the first parameter and the second parameter;

[0077] Based on the first time domain, a second time domain for performing scheduling restrictions on the current serving cell is determined.

[0078] In conjunction with some embodiments of the second aspect, in some embodiments, determining, based on the first time domain, a second time domain for performing scheduling restrictions on the current serving cell includes one of the following:

[0079] Determining the second time domain as a configured first time window;

[0080] The second time domain is determined to be at least one time unit before the first time domain within the first time window, and / or at least one time unit after the first time domain within the first time window.

[0081] In conjunction with some embodiments of the second aspect, in some embodiments, determining, based on the first time domain, a second time domain for performing scheduling restrictions on the current serving cell includes at least one of the following:

[0082] determining the second time domain as the first time domain;

[0083] Determining that the second time domain is at least one time unit before the first time domain;

[0084] The second time domain is determined to be at least one time unit after the first time domain.

[0085] In a third aspect, an embodiment of the present disclosure provides a terminal, including:

[0086] A first transceiver module is configured to receive a first switching command, where the first switching command includes a first parameter;

[0087] The first processing module is configured to determine a first time domain of a signal to be measured for synchronization based on the first parameter, and determine a second time domain for performing scheduling restrictions on a current serving cell based on the first time domain.

[0088] In a fourth aspect, an embodiment of the present disclosure provides a network device, including:

[0089] The second transceiver module is configured to send a first switching command, where the first switching command includes a first parameter, and the first parameter is used to determine a first time domain of the signal to be measured for synchronization.

[0090] In a fifth aspect, an embodiment of the present disclosure provides a terminal, including:

[0091] one or more processors;

[0092] The terminal executes the method described in the optional implementation manner of the first aspect.

[0093] According to a sixth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0094] one or more processors;

[0095] In which, the network device executes the method described in the optional implementation manner of the second aspect.

[0096] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, including a terminal and a network device, wherein the terminal is used to implement the method described in the optional implementation mode of the first aspect, and the network device is used to implement the method described in the optional implementation mode of the second aspect.

[0097] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the optional implementation of the first aspect or the second aspect.

[0098] In a ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation manner of the first aspect or the second aspect.

[0099] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first aspect or the second aspect.

[0100] In an eleventh aspect, an embodiment of the present disclosure proposes a chip or a chip system, which includes a processing circuit for executing the method described in the optional implementation of the first or second aspect above.

[0101] It is understandable that the above-mentioned apparatus for random access, communication equipment, communication system, storage medium, program product, and computer program are all used to perform the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here. Among them, the communication equipment can be a terminal or a network device.

[0102] The embodiments of the present disclosure provide a communication method, an apparatus, a communication device, a communication system, and a storage medium.

[0103] In some embodiments, terms such as communication method, information processing method, and random access can be replaced with each other; terms such as device for random access, information processing device, and communication device can be replaced with each other; and terms such as information processing system and communication system can be replaced with each other.

[0104] The embodiments of the present disclosure are not exhaustive, but are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the embodiments of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0105] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0106] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present disclosure.

[0107] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0108] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0109] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple", etc. can be used interchangeably.

[0110] In the embodiments of the present disclosure, descriptions such as “at least one of A, B, C…”, “A and / or B and / or C…”, etc. include the situation where any one of A, B, C… exists alone, and also include any combination of any multiple of A, B, C…, and each situation can exist alone; for example, “at least one of A, B, C” includes the situation where A exists alone, B exists alone, C exists alone, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C; for example, A and / or B includes the situation where A exists alone, B exists alone, and the combination of A and B.

[0111] In some embodiments, descriptions such as "in one case A, in another case B," or "in response to one case A, in response to another case B," may include the following technical solutions depending on the situation: executing A independently of B (in some embodiments, A); executing B independently of A (in some embodiments, B); selectively executing A and B (in some embodiments, selecting between A and B); and executing both A and B (in some embodiments, A and B). The same applies when there are more branches, such as A, B, and C.

[0112] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different. For another example, if the description object is "information", then the "first configuration" and the "second configuration" can be the same information or different information, and their contents can be the same or different.

[0113] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0114] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0115] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0116] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0117] 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", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0118] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0119] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, which can also be referred to as device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, languages ​​such as "uplink" and "downlink" can also be replaced with languages ​​corresponding to communication between terminals (for example, "side").

[0120] For example, an uplink channel, a downlink channel, etc. may be replaced by a side channel, and an uplink, a downlink, etc. may be replaced by a side link.

[0121] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0122] In some embodiments, the terms "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like may be used interchangeably.

[0123] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" can be used interchangeably.

[0124] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0125] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0126] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0127] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0128] FIG1a is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0129] As shown in FIG. 1 a , a communication system 100 includes a terminal 101 and a network device 102 .

[0130] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0131] In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

[0132] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0133] In some embodiments, the technical solutions of the embodiments of the present disclosure may be applicable to the Open RAN architecture. In this case, the interfaces between or within the network devices involved in the embodiments of the present disclosure may become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces may be implemented through software or programs.

[0134] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0135] In some embodiments, the access network device may be a single device, or may be multiple devices or a group of devices, each including all or part of a first network element, a second network element, etc. The network element may be virtual or physical. The network device may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0136] In some embodiments, a core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0137] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0138] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1a, or a portion thereof, but are not limited thereto. The entities shown in FIG1a are illustrative only. The communication system may include all or a portion of the entities shown in FIG1a, or may include other entities other than those shown in FIG1a. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0139] The embodiments of the present disclosure may be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), other systems utilizing random access, and next-generation systems based on and extending these systems. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0140] Non-Terrestrial Networks (NTNs) can support both hard and soft handoffs between satellites while maintaining the PCI. Compared to hard handoffs, soft handoffs can maintain downlink synchronization by performing measurements on the target satellite while maintaining the source satellite connection.

[0141] Based on current scheduling restrictions, the UE cannot schedule uplink and downlink data because it needs to perform measurements on the target satellite within the entire synchronization signal / physical broadcast channel block measurement timing configuration (SMTC) duration window.

[0142] In some embodiments, when performing soft handover, the UE must measure the target satellite within the entire SMTC duration window, preventing the UE from scheduling uplink and downlink data. Therefore, during soft handover, the UE's scheduling restrictions on the current serving cell are extended (i.e., the entire SMTC duration window) to measure the target cell, impacting handover performance.

[0143] To this end, an embodiment of the present disclosure proposes a scheme for enhancing scheduling restrictions to reduce scheduling restrictions. Optionally, at the second time domain position, that is, the time domain position for transmitting the target SSB, or the time domain position for transmitting the target SSB and at least one time unit before and after the time domain position, no uplink and downlink data is scheduled (no uplink and downlink data transmission is performed), while other time domain positions can schedule uplink and downlink data. Optionally, at the time domain position for transmitting the target SSB within the SMTC duration window, and at least one time unit before and after the time domain position, no uplink and downlink data is scheduled (no uplink and downlink data transmission is performed), while other time domain positions within the SMTC duration window can schedule uplink and downlink data.

[0144] In some embodiments, the network configures the SSB (Synchronization Signal and PBCH block) time offset (ssb-TimeOffset IE) in the soft handover command to indicate the timing error between the UE's source SSB and target SSB. Optionally, ssb-TimeOffset indicates the time offset between the SSBs from the source satellite and the target satellite at the uplink time synchronization reference point. Optionally, ssb-TimeOffset is given in terms of the number of subframes. For example, ssb-TimeOffset is 2 subframes, but is not limited to this.

[0145] In some embodiments, to ensure the correct execution of soft handover from a measurement perspective, it is necessary to ensure that the time when the source SSB and the target SSB arrive at the UE does not overlap and is separated by at least one OFDM (Orthogonal Frequency Division Multiplexing) symbol. Optionally, the time when the source SSB arrives at the UE and the time when the target SSB arrives at the UE are separated by at least one OFDM symbol.

[0146] In some embodiments, from the UE perspective, as shown in FIG1b ,

[0147] S1 (source satellite) downlink (DL) reception time is: ReceiveTimesource = TramsmitT1 + T Lf1 +T LS1 , where TramsmitT1 is the sending time of the source SSB (ie, the SSB corresponding to S1), T Lf1 For source SSB on path L f1 The transmission time on LS1 For source SSB on path L s1 The transmission time on .

[0148] S2 (target satellite) DL reception time is: ReceiveTimetarget = TransmitT2 + T Lf2 +T LS2 , where TramsmitT2 is the sending time of the target SSB (ie, the SSB corresponding to S2), T Lf2 For the target SSB on path L f2 The transmission time on LS2 For the target SSB on path L s2 The transmission time on .

[0149] During soft handover, the UE needs to perform synchronous measurements on the target satellite (Target SAT) while maintaining the source satellite (Source SAT). This requires that ReceiveTimesource ≠ ReceiveTimetarget, otherwise the signals from the two satellites will interfere with each other, affecting the UE's correct reception.

[0150] Then: ReceiveTimesource-ReceiveTimetarget=TramsmitT1+T Lf1 +T LS1 -(TransmitT2+T Lf2 +T LS2 )

[0151] The difference between TramsmitT1 and TramsmitT2 can be controlled by the network equipment. Lf1 -T Lf2 The difference can be determined by the network equipment, T LS1 -T LS2The difference can be reported by the UE to the network device through the IE propagationDelayDifference (propagation delay difference, PDD).

[0152] The PDD indicates the one-way service link propagation delay difference between the serving cell and each neighboring cell included in the neighboring cell information list (neighCellInfoList), defined as the service link propagation delay of the neighboring cell minus the service link propagation delay of the serving cell, in milliseconds. The first entry in propagationDelayDifference corresponds to the first entry in neighCellInfoList, the second entry in propagationdelayDifference corresponds to the second entry in neighCellInfoList, and so on.

[0153] Based on the above wireless communication system, various embodiments of the communication method proposed in the present disclosure are described in detail below.

[0154] FIG2a is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2a , the communication method is used in a communication system 100, and the method includes:

[0155] S201: A network device sends a first switching command to a terminal.

[0156] In some embodiments, the first handover command is used to instruct the terminal to perform soft handover.

[0157] Optionally, in the NTN system, soft handover means: while maintaining connection with a source satellite (source SAT), performing measurement on a target satellite (target SAT) to achieve downlink synchronization.

[0158] In some embodiments, the first handover command includes a first parameter.

[0159] Optionally, the first parameter represents a time offset between SSBs from the source network node and the target network node at an uplink time synchronization reference point (eg, a base station or a source satellite).

[0160] Optionally, in the NTN system, the first parameter is used to indicate a time offset between the SSBs of the terminal from the source satellite and the target satellite, or the first parameter is used to indicate a timing error between the SSBs of the terminal from the source satellite and the target satellite.

[0161] In some embodiments, the network device carries the first parameter via an information element (IE) related to time offset configured in the first handover command. Optionally, the network device indicates the first parameter via an ssb-TimeOffset IE.

[0162] In some embodiments, the first parameter may be denoted as ssb-TimeOffse.

[0163] In some embodiments, the terminal may receive a first switching command sent by the network device.

[0164] S202: The terminal determines a first time domain of a signal to be measured for synchronization based on a first parameter.

[0165] In some embodiments, the terminal receives a first switching command sent by the network device.

[0166] In some embodiments, the terminal obtains a first parameter in the first handover command.

[0167] Optionally, the terminal determines a first time domain of the signal to be measured for synchronization based on the first parameter in the first switching command.

[0168] Optionally, the signal to be measured for synchronization may include an SSB to be measured.

[0169] In some embodiments, the SSB to be measured may also be described as a target SSB. Optionally, the target SSB is the SSB of the target satellite.

[0170] In some embodiments, the terminal determines a first time domain of the target SSB based on a first parameter in the first switching command.

[0171] In some embodiments, the terminal determines the time domain position of the target SSB based on the first parameter in the first switching command.

[0172] In some embodiments, the above step S202 may specifically include: determining the first time domain based on the first parameter and the second parameter.

[0173] In some embodiments, the second parameter represents a propagation delay difference (PDD) between a service link propagation delay of a current serving cell and a service link propagation delay of a neighboring cell. Optionally, the PDD may be determined by the terminal based on the service link propagation delay of the current serving cell and the service link propagation delay of the neighboring cell.

[0174] In some embodiments, the starting position of the first time domain may be: the time domain position of the source SSB is separated from the time domain starting position by the sum of the first parameter and the second parameter.

[0175] In some embodiments, the time domain position of the target SSB is determined based on the first parameter and the second parameter. Optionally, the time domain starting position of the target SSB is the time domain position of the source SSB separated by the sum of the first parameter and the second parameter. Optionally, in an NTN system, the time domain starting position of the target SSB = the time domain starting position of the source SSB + ssb-TimeOffset + PDD.

[0176] In some embodiments, the time domain resources required to transmit one SSB are four OFDM symbols. Optionally, the starting position of the first OFDM symbol corresponding to the target SSB is determined based on the first parameter and the second parameter. Exemplarily, in an NTN system, the starting position of the first OFDM symbol corresponding to the target SSB = the starting position of the first OFDM symbol corresponding to the source SSB + ssb-TimeOffset + PDD.

[0177] S203. The terminal determines a second time domain for performing scheduling restrictions on the current serving cell based on the first time domain.

[0178] In some embodiments, S203 may include:

[0179] S203a: Determine whether to execute the first handover command based on the first time domain and the first time window; if it is determined to execute the first handover command, determine the second time domain as the first time window;

[0180] In some embodiments, the first time window is configured by the network device.

[0181] In some embodiments, the first time window may be an SMTC duration window.

[0182] In some embodiments, the terminal may determine whether to execute the first switching command based on the positional relationship between the first time domain and the first time window. If it is determined to execute the first switching command, scheduling restrictions are imposed on the current serving cell within the first time window.

[0183] Optionally, the terminal can determine whether to perform soft switching based on the position relationship between the time domain position of the target SSB and the first time window. If it is determined to perform soft switching, scheduling restrictions are imposed on the current service cell within the first time window.

[0184] By judging whether the first time domain is within the first time window, it can be determined that scheduling restrictions are imposed on the time domain position within the time window and the target SSB is searched within the first time window only when the first time domain is within the first time window. This can avoid unnecessary scheduling restrictions and waste of time domain resources due to direct scheduling restrictions on the time domain position within the time window without making a judgment when the first time domain is outside the first time window. It can also avoid extra energy consumption caused by the terminal still attempting to search for the target SSB within the first window when the target SSB is outside the first time window.

[0185] In some embodiments, if it is determined to execute the first switching command, the second time domain is determined to be at least one time unit before the first time domain within the first time window.

[0186] In some embodiments, the time unit may be a symbol, a time slot, a subframe, etc., but is not limited thereto.

[0187] In some embodiments, if it is determined to execute the first switching command, the second time domain is determined to be 1 symbol before the first time domain within the first time window.

[0188] It should be noted that the symbols in the embodiments of the present disclosure refer to data symbols, such as OFDM symbols.

[0189] Optionally, the terminal performs scheduling restriction on the current serving cell on one symbol before the first time domain in the first time window.

[0190] In some embodiments, if it is determined to execute the first switching command, the second time domain is determined to be at least one time unit after the first time domain within the first time window.

[0191] In some embodiments, if it is determined to execute the first handover command, the second time domain is determined to be one symbol after the first time domain in the first time window. Optionally, the terminal performs scheduling restriction on the current serving cell on one symbol after the first time domain in the first time window.

[0192] In some embodiments, if it is determined to execute the first handover command, the second time domain is determined to be at least one time unit before the first time domain within the first time window, and at least one time unit after the first time domain. Optionally, the terminal performs scheduling restrictions on the current serving cell on one symbol before the first time domain and one symbol after the first time domain within the first time window.

[0193] In some embodiments, the first time domain is a time domain resource (or time domain location) used for transmitting a target SSB once. The number of first time domains within the first time window may be one or more than one. That is, the first time window may include multiple first time domains for multiple transmissions of the target SSB.

[0194] Optionally, if there are more than one first time domains within the first time window, when determining to execute the first switching command, the second time domain is determined to be at least one time unit before each first time domain within the first time window, and / or at least one time unit after each first time domain.

[0195] In some embodiments, the second time domain is a time domain resource (or time domain location) for not scheduling uplink and downlink data. Optionally, the terminal does not transmit uplink and downlink data in the second time domain.

[0196] In some embodiments, determining whether to execute the first switching command based on the first time domain and the first time window includes:

[0197] If the first time domain is within the first time window, determining to execute the first switching command;

[0198] If the first time domain is outside the first time window, it is determined not to execute the first switching command, and to execute the second switching command.

[0199] In some embodiments, the first handover command instructs the terminal to perform a soft handover, and the second handover command instructs the terminal to perform a hard handover.

[0200] In some embodiments, if the first time domain of the target SSB is within the first time window, a soft handover is determined to be performed. Optionally, as shown in FIG2b , if all four OFDM symbols corresponding to the target SSB are within the SMTC duration window, a soft handover is determined to be performed. Optionally, the positions of the first time domain and the second time domain within the first time window can refer to the content shown in FIG2e . It should be noted that FIG2e is only an example and does not limit this embodiment.

[0201] In some embodiments, if the first time domain of the target SSB is outside the first time window, it is determined that soft handover is not performed and hard handover is performed. Optionally, as shown in FIG2c, if all four OFDM symbols corresponding to the target SSB are outside the SMTC duration window, it is determined that hard handover is not performed and soft handover is performed. Optionally, as shown in FIG2d, if part of the four OFDM symbols corresponding to the target SSB is outside the SMTC duration window, it is determined that hard handover is not performed and soft handover is performed.

[0202] In some embodiments, the terminal can detect a time domain for SSB configured within a first time window, but cannot detect a time domain for SSB configured outside the first time window. Therefore, when the first time domain is within the first time window, a soft handover command can be executed; however, when the first time domain is outside the first time window, the soft handover command cannot be executed and a hard handover command must be executed. Optionally, a hard handover refers to disconnecting from a source satellite and performing measurements on a target satellite.

[0203] It should be noted that the value of the PDD can be positive or negative. The cases shown in Figures 2b, 2c, 2d, and 2e in the above embodiment are all cases where the value of the PDD is positive.

[0204] In some embodiments, the value of PDD may be negative. In this case, the first time domain corresponding to the target SSB may be located before the time domain position corresponding to the source SSB.

[0205] In some embodiments, the terminal can perform measurements in the first time domain within the first time window to achieve synchronization, and not schedule uplink and downlink data in the first time domain within the first time window and / or at least one time unit before and after the first time domain (for example, the time unit can be 1 symbol), but schedule uplink and downlink data at other time domain positions within the first time window, thereby reducing the time domain resources with scheduling restrictions.

[0206] In some embodiments, the above step S203 may also specifically include:

[0207] S203b: Determining, based on the first time domain, a second time domain for performing scheduling restrictions on the current serving cell, including at least one of the following:

[0208] determining the second time domain as the first time domain;

[0209] Determining that the second time domain is at least one time unit before the first time domain;

[0210] The second time domain is determined to be at least one time unit after the first time domain.

[0211] In some embodiments, the terminal may ignore the first time window configured by the network device and determine the second time domain for scheduling restrictions on the current serving cell. In this case, during the soft handover process, the terminal may also ignore the first time window configured by the network device and directly perform measurements on the target satellite based on the target SSB.

[0212] In some embodiments, the UE can detect the time domain for SSB configured within the first time window, and can also detect the time domain for SSB configured outside the first time window. At this time, the first time window configured by the network device can be ignored, and the second time domain for not scheduling uplink and downlink data can be directly determined based on the time domain position of the target SSB.

[0213] In some embodiments, the terminal may determine to perform scheduling restrictions on the current serving cell in the first time domain. Optionally, the second time domain is the first time domain.

[0214] In some embodiments, the terminal may determine to perform scheduling restrictions on the current serving cell at least one time unit before the first time domain. Optionally, the second time domain is at least one time unit before the first time domain.

[0215] In some embodiments, the time unit may be a symbol, a time slot, a subframe, etc., but is not limited thereto.

[0216] In some embodiments, the terminal may determine that the second time domain is one symbol before the first time domain. Optionally, the terminal performs scheduling restriction on the current serving cell one symbol before the first time domain.

[0217] In some embodiments, the terminal may determine to perform scheduling restrictions on the current serving cell in at least one time unit after the first time domain. Optionally, the second time domain is at least one time unit after the first time domain.

[0218] In some embodiments, the terminal may determine that the second time domain is one symbol after the first time domain. Optionally, the terminal performs scheduling restriction on the current serving cell on one symbol after the first time domain.

[0219] In some embodiments, the terminal may determine to perform scheduling restrictions on the current serving cell in the first time domain and / or at least one time unit before and after the first time domain. Optionally, the second time domain is at least one of the first time domain, at least one time unit before the first time domain, and at least one time unit after the first time domain. Exemplarily, the terminal may determine to perform scheduling restrictions on the current serving cell in the first time domain and / or 1 symbol before and after the first time domain (i.e., not scheduling uplink and downlink data in the first time domain and / or 1 symbol before and after the first time domain), thereby reducing the time domain resources subject to scheduling restrictions.

[0220] Either step 203a or step 203b can be performed selectively.

[0221] In some embodiments, if the terminal has a capability of supporting scheduling restriction enhancement, the method may further include:

[0222] S204: Send a first message to the network device.

[0223] In some embodiments, the first message includes a second parameter. Optionally, the second parameter is used by the network device to determine the first time domain and the second time domain. Optionally, the first message can be a message for reporting terminal capabilities, such as a terminal capability reporting message (or a UE capability reporting message), or a message for carrying terminal capabilities, but is not limited thereto.

[0224] In some embodiments, if the terminal has the capability to support scheduling restriction enhancement, it may send a first message including a first parameter to the network device. For example, if the second parameter is a PDD, the network device may determine the first time domain of the target SSB based on the PDD sent by the terminal, and determine the second time domain for the terminal to perform scheduling restrictions on the current serving cell, thereby being consistent with the second time domain determined by the terminal.

[0225] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", and "data" can be used interchangeably.

[0226] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0227] In some embodiments, if the terminal has the capability to support scheduling restriction enhancement, the terminal can discard or skip SSB-based measurements other than the SSB of the target satellite during the soft switching process. At this time, the time domain position of the SSB of the source satellite can be used to schedule uplink and downlink data.

[0228] S205: The network device determines a first time domain based on the first parameter and the second parameter.

[0229] In some embodiments, the network device obtains a second parameter from the received first message and determines a first time domain based on the second parameter and the configured first parameter. Optionally, the first time domain is a time domain resource corresponding to a target or to-be-measured SSB.

[0230] In some embodiments, the first parameter represents a time offset between SSBs from the source network node and the target network node at an uplink time synchronization reference point (eg, base station, or satellite).

[0231] Optionally, in the NTN system, the first parameter is used to indicate a time offset between the SSBs of the terminal from the source satellite and the target satellite, or the first parameter is used to indicate a timing error between the SSBs of the terminal from the source satellite and the target satellite.

[0232] In some embodiments, the network device configures the first parameter via the ssb-TimeOffset IE. Optionally, the first parameter may be recorded as ssb-TimeOffset.

[0233] For the optional implementation of determining the first time domain in step S205 , reference may be made to the relevant description in the above step S202 , which will not be repeated here.

[0234] S206: The network device determines a second time domain for performing scheduling restrictions on the current serving cell based on the first time domain.

[0235] In some embodiments, the network device may determine a second time domain for scheduling restrictions on the current serving cell based on the time domain resources corresponding to the target SSB.

[0236] In some embodiments, the above step S206 may specifically include: determining, based on the first time domain, a second time domain for scheduling restrictions on the current serving cell, including:

[0237] Determine the second time domain as the configured first time window; or,

[0238] The second time domain is determined to be at least one time unit before the first time domain within the first time window, and / or at least one time unit after the first time domain within the first time window.

[0239] In some embodiments, the network device may determine the time domain resource (i.e., the first time domain) corresponding to the target SSB based on the configured first parameter and the second parameter reported by the terminal, and may determine whether the time domain resource is within the configured first time window. If so, the first time window is determined as the second time domain for scheduling restrictions on the current serving cell; or, at least one time unit before the first time domain within the first time window, and / or at least one time unit after the first time domain, is determined as the second time domain for scheduling restrictions on the current serving cell, thereby reducing the duration of the scheduling restriction. Otherwise, a hard handover is performed, and scheduling is not restricted.

[0240] In some embodiments, the above step S206 may further specifically include: determining, based on the first time domain, a second time domain for performing scheduling restrictions on the current serving cell, including at least one of the following:

[0241] determining the second time domain as the first time domain;

[0242] Determining that the second time domain is at least one time unit before the first time domain;

[0243] The second time domain is determined to be at least one time unit after the first time domain.

[0244] In some embodiments, the network device can determine the time domain resources (i.e., the first time domain) corresponding to the target SSB based on the configured first parameter and the second parameter reported by the terminal, and determine the first time domain as the second time domain for scheduling restrictions on the current service cell; or, determine at least one time unit before the first time domain, and / or at least one time unit after the first time domain as the second time domain for scheduling restrictions on the current service cell, thereby reducing the duration of the scheduling restriction.

[0245] In some embodiments, the time unit may be, but is not limited to, a symbol, a time slot, a subframe, etc. Optionally, at least one time unit may be, but is not limited to, one symbol.

[0246] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

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

[0248] The method involved in the embodiments of the present disclosure may include at least one of steps S201 to S206. For example, steps S201, S202, and S203 may be implemented as independent embodiments, steps S201, S202, S203, and S204 may be implemented as independent embodiments, and steps S201, S202, S203, S204, S205, and S206 may be implemented as independent embodiments, but are not limited thereto.

[0249] In some embodiments, step S204 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0250] In some embodiments, steps S205 and S206 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0251] It should be noted that step S204 is executed after step S201 and has no precedence order with steps S202 and S203. Step S204 can be executed sequentially or in parallel with step S202 or step S203. This embodiment does not limit this.

[0252] FIG3a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3a , the communication method can be executed by the terminal 101, and the method includes:

[0253] S301: Obtain a first switching command.

[0254] The optional implementation of step S301 can refer to the optional implementation of step S201 in FIG2a and other related parts in the embodiment involved in FIG2a, which will not be described in detail here.

[0255] In some embodiments, the terminal receives a first switching command sent by a network device. Optionally, the terminal may also receive a first switching command sent by another network node, which is not limited in this embodiment.

[0256] In some embodiments, the first handover command is used to instruct the terminal to perform soft handover.

[0257] In some embodiments, the first handover command includes a first parameter.

[0258] S302: Determine a first time domain of a signal to be measured for synchronization.

[0259] The optional implementation of step S302 can refer to the optional implementation of step S202 in Figure 2a and other related parts in the embodiment involved in Figure 2a, which will not be repeated here.

[0260] In some embodiments, the terminal determines a first time domain of the signal to be measured for synchronization based on the first parameter.

[0261] In some embodiments, the terminal determines the first time domain based on the first parameter and the second parameter.

[0262] Optionally, in the NTN system, the first parameter is used to indicate a time offset between the SSBs of the terminal from the source satellite and the target satellite, or the first parameter is used to indicate a timing error between the SSBs of the terminal from the source satellite and the target satellite.

[0263] Optionally, the second parameter represents a propagation delay difference (PDD) between a service link propagation delay of a current service cell and a service link propagation delay of an adjacent cell.

[0264] S303: Determine a second time domain for performing scheduling restrictions on the current serving cell.

[0265] The optional implementation of step S303 can refer to the optional implementation of step S203 in FIG2a and other related parts in the embodiment involved in FIG2a, which will not be described in detail here.

[0266] In some embodiments, the terminal determines a second time domain for scheduling restrictions on the current serving cell based on the first time domain.

[0267] In some embodiments, the terminal may determine a second time domain for performing scheduling restrictions on the current serving cell based on a relationship between the first time domain and a first time window configured by the network device.

[0268] In some embodiments, the terminal may ignore the first time window configured by the network device, and determine a second time domain for performing scheduling restrictions on the current serving cell based on the first time domain.

[0269] If the terminal has the capability to support enhanced scheduling restrictions, based on the above embodiment, the following may be further included:

[0270] S304: Send a first message.

[0271] The optional implementation of step S304 can refer to the optional implementation of step S204 in FIG2a and other related parts in the embodiment involved in FIG2a, which will not be described in detail here.

[0272] In some embodiments, the first message includes a second parameter. Optionally, the second parameter is used by the network device to determine the first time domain and the second time domain.

[0273] In some embodiments, if the terminal has the capability to support scheduling restriction enhancement, it may send a first message including a first parameter to the network device.

[0274] The method involved in the embodiment of the present disclosure may include at least one of steps S301 to S304. For example, steps S301 to S303 may be implemented as independent embodiments, but are not limited thereto.

[0275] In some embodiments, step S304 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0276] FIG3b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3b , the communication method can be executed by the terminal 101, and the method includes:

[0277] S311: Obtain a first switching command.

[0278] The optional implementation of step S311 can refer to the optional implementation of step S201 in Figure 2a, the optional implementation of step S301 in Figure 3a, and other related parts in the embodiments involved in Figures 2a and 3a, which will not be repeated here.

[0279] In some embodiments, the terminal receives a first switching command sent by a network device. Optionally, the terminal may also receive a first switching command sent by another network node, which is not limited in this embodiment.

[0280] In some embodiments, the first handover command is used to instruct the terminal to perform soft handover.

[0281] In some embodiments, the first handover command includes a first parameter.

[0282] S312: Determine a first time domain of the signal to be measured for synchronization based on the first parameter.

[0283] The optional implementation of step S312 can refer to the optional implementation of step S202 in Figure 2a, the optional implementation of step S302 in Figure 3a, and other related parts in the embodiments involved in Figures 2a and 3a, which will not be repeated here.

[0284] In some embodiments, the above step S312 may specifically include: determining the first time domain based on the first parameter and the second parameter.

[0285] Optionally, the second parameter represents the propagation delay difference between the service link propagation delay of the current service cell and the service link propagation delay of the adjacent cell.

[0286] S313: Determine a second time domain for performing scheduling restrictions on the current serving cell based on the first time domain.

[0287] The optional implementation of step S313 can refer to the optional implementation of step S203 in Figure 2a, the optional implementation of step S303 in Figure 3a, and other related parts in the embodiments involved in Figures 2a and 3a, which will not be repeated here.

[0288] In some embodiments, step S313 may specifically include: determining whether to execute the first handover command based on the first time domain and the first time window; and if it is determined to execute the first handover command, determining that the second time domain is one of the following:

[0289] First time window;

[0290] At least one time unit before the first time domain within a first time window, and / or at least one time unit after the first time domain within the first time window.

[0291] Optionally, the first time window is configured by a network device.

[0292] In some embodiments, determining whether to execute the first handover command based on the first time domain and the first time window includes:

[0293] If the first time domain is within the first time window, determining to execute the first switching command;

[0294] If the first time domain is outside the first time window, it is determined not to execute the first switching command, and to execute the second switching command.

[0295] In some embodiments, step S313 may include at least one of the following:

[0296] determining the second time domain as the first time domain;

[0297] Determining that the second time domain is at least one time unit before the first time domain;

[0298] The second time domain is determined to be at least one time unit after the first time domain.

[0299] In some embodiments, if the terminal has a capability to support scheduling restriction enhancement, the method further includes:

[0300] A first message is sent to a network device, where the first message includes the second parameter, and the second parameter is used by the network device to determine the first time domain and the second time domain.

[0301] The above optional implementation can refer to the optional implementation of step S204 in Figure 2a, the optional implementation of step S304 in Figure 3a, and other related parts in the embodiments involved in Figures 2a and 3a, which will not be repeated here.

[0302] FIG4a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4a , the method according to the embodiment of the present disclosure is executed by the network device 102, and the method includes:

[0303] S401: Send a first switching command.

[0304] In some embodiments, the network device sends a first switching command to the terminal.

[0305] The optional implementation of step S401 can refer to the optional implementation of step S201 in FIG2a and other related parts in the embodiment involved in FIG2a, which will not be described in detail here.

[0306] In some embodiments, the first handover command is used to instruct the terminal to perform soft handover.

[0307] In some embodiments, the first handover command includes a first parameter.

[0308] S402: Receive a first message.

[0309] The optional implementation of step S402 can refer to the optional implementation of step S204 in Figure 2a and other related parts in the embodiment involved in Figure 2a, which will not be repeated here.

[0310] In some embodiments, the network device receives a first message sent by the terminal.

[0311] In some embodiments, the first message includes a second parameter. Optionally, the network device determines the first time domain and the second time domain based on the second parameter.

[0312] In some embodiments, the first blanking is sent to the network device if the terminal has the capability to support scheduling restriction enhancement.

[0313] S403: Determine a first time domain of a signal to be measured for synchronization.

[0314] The optional implementation of step S403 can refer to the optional implementation of step S205 in FIG2a and other related parts in the embodiment involved in FIG2a, which will not be described in detail here.

[0315] In some embodiments, the network device determines a first time domain of a signal to be measured for synchronization based on a configured first parameter.

[0316] In some embodiments, the network device determines the first time domain based on a configured first parameter and a second parameter in the first message.

[0317] Optionally, in the NTN system, the first parameter is used to indicate a time offset between the SSBs of the terminal from the source satellite and the target satellite, or the first parameter is used to indicate a timing error between the SSBs of the terminal from the source satellite and the target satellite.

[0318] Optionally, the second parameter represents a propagation delay difference (PDD) between a service link propagation delay of a current service cell and a service link propagation delay of an adjacent cell.

[0319] S404: Determine a second time domain for performing scheduling restrictions on the current serving cell.

[0320] The optional implementation of step S404 can refer to the optional implementation of step S206 in FIG2a and other related parts in the embodiment involved in FIG2a, which will not be described in detail here.

[0321] In some embodiments, the network device determines a second time domain for performing scheduling restrictions on the current serving cell based on the first time domain.

[0322] In some embodiments, the network device may determine a second time domain for performing scheduling restrictions on the current serving cell based on a relationship between the first time domain and a first time window configured by the network device.

[0323] In some embodiments, the network device may ignore the configured first time window and determine, based on the first time domain, a second time domain for performing scheduling restrictions on the current serving cell.

[0324] The method involved in the embodiment of the present disclosure may include at least one of steps S401 to S404. For example, step S401 may be implemented as an independent embodiment, but is not limited thereto.

[0325] In some embodiments, steps S402 to S404 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0326] FIG4 b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4 b , the method according to the embodiment of the present disclosure is executed by the network device 102, and the method includes:

[0327] S411: Send a first switching command.

[0328] In some embodiments, the network device sends a first switching command to the terminal.

[0329] The optional implementation of step S411 can refer to the optional implementation of step S201 in Figure 2a and other related parts in the embodiment involved in Figure 2a, which will not be repeated here.

[0330] In some embodiments, the first handover command is used to instruct the terminal to perform soft handover.

[0331] In some embodiments, the first handover command includes a first parameter.

[0332] In some embodiments, the above embodiment further includes: receiving a first message sent by a terminal, wherein the first message includes a second parameter;

[0333] Optionally, the second parameter represents a propagation delay difference between a service link propagation delay of a current service cell of the terminal and a service link propagation delay of a neighboring cell.

[0334] For the optional implementation of the above optional embodiment, reference may be made to the optional implementation of step S204 in FIG. 2a , step S304 in FIG. 3a , and other related parts of the embodiments involved in FIG. 2a and FIG. 3a , which will not be described in detail here.

[0335] In some embodiments, the above method may further include:

[0336] determining the first time domain based on the first parameter and the second parameter;

[0337] Based on the first time domain, a second time domain for performing scheduling restrictions on the current serving cell is determined.

[0338] The optional implementation of the above optional embodiment can be found in step S205 of FIG. 2 a and other related parts of the embodiment involved in FIG. 2 a , which will not be described in detail here.

[0339] In some embodiments, determining, based on the first time domain, a second time domain for performing scheduling restrictions on the current serving cell includes one of the following:

[0340] Determining the second time domain as a configured first time window;

[0341] The second time domain is determined to be at least one time unit before the first time domain within the first time window, and / or at least one time unit after the first time domain within the first time window.

[0342] In some embodiments, determining, based on the first time domain, a second time domain for performing scheduling restrictions on the current serving cell includes at least one of the following:

[0343] determining the second time domain as the first time domain;

[0344] Determining that the second time domain is at least one time unit before the first time domain;

[0345] The second time domain is determined to be at least one time unit after the first time domain.

[0346] For the optional implementation of the above optional embodiment, reference may be made to the optional implementation of step S206 in FIG2 a and other related parts of the embodiment involved in FIG2 a , which will not be described in detail here.

[0347] FIG5 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG5 , the method according to the embodiment of the present disclosure is used in a communication system 100, and the method includes:

[0348] S501: A network device sends a first switching command.

[0349] For the optional implementation of step S501, please refer to step S201 in Figure 2a, step S301 in Figure 3a, step S311 in Figure 3b, step S401 in Figure 4a, step S411 in Figure 4b, and other related parts in the embodiments involved in Figure 2a, Figures 3a~3b, and Figures 4a~4b, which will not be repeated here.

[0350] S502: The terminal determines a second time domain for performing scheduling restrictions on the current serving cell.

[0351] The optional implementation of step S502 can refer to the optional implementation of steps S202 and S203 in Figure 2a, steps S302 and S303 in Figure 3a, steps S312 and S313 in Figure 3b, and other related parts in the embodiments involved in Figure 2a and Figures 3a~3b, which will not be repeated here.

[0352] In some embodiments, the above method may include the method described in the above embodiments of the communication system side, terminal side, network equipment side, core network equipment side, etc., which will not be repeated here.

[0353] The present disclosure also provides an optional implementation scheme. After the UE receives a soft handover command (which may correspond to the first handover command mentioned above), it determines the positional relationship between the time domain corresponding to the target SSB (which may correspond to the first time domain mentioned above) and the SMTC duration window (which may correspond to the first time window mentioned above). Optionally, the time domain starting position corresponding to the target SSB (Target SSB position) = the time domain starting position of the source SSB (source SSB) + ssbTimeOffset + PDD. Among them, ssbTimeOffset may correspond to the first parameter mentioned above, included in the soft handover command; PPD may correspond to the second parameter mentioned above, determined by the UE.

[0354] In some embodiments, if the SMTC duration window ≤ the time domain starting position of the source SSB + ssbTimeOffset + PDD, it is determined that the time domain corresponding to the target SSB is outside the SMTC duration window (see Figures 2c and 2d). At this time, the UE does not perform the soft switching process and falls back to hard switching (which can correspond to the switching operation corresponding to the second switching command above). There is no scheduling restriction at this time.

[0355] In some embodiments, if the SMTC duration window is greater than the time domain starting position of the source SSB + ssbTimeOffset + PDD, it is determined that the time domain corresponding to the target SSB is within the SMTC duration window (as shown in Figure 2b). At this time, the UE performs soft switching normally, meets the soft switching performance requirements specified in the protocol, and performs scheduling restrictions on the current service cell within the SMTC duration window (which can correspond to the second time domain mentioned above).

[0356] In another optional implementation, based on the above embodiments and based on UE capabilities, the UE reports PDD during the soft handover process to update timing information on the network side.

[0357] In some embodiments, if the UE has the capability to support scheduling restriction enhancement, it may report the PDD to the network device.

[0358] In some embodiments, the time domain scope of the scheduling restriction on the current serving cell is narrowed to the first X data symbols (which may correspond to at least one time unit above) and / or the last X data symbols of the time domain resources corresponding to each target SSB to be measured (e.g., the symbols corresponding to each target SSB to be measured) within the SMTC duration window. Optionally, X=1.

[0359] In another optional implementation scheme, the UE ignores the SMTC duration window configured by the network device and determines the time domain range of the scheduling restriction on the symbols corresponding to the target SSB to be measured (target SSB symbols to be measured), that is, the position of source SSB symbols to be measured+ssb-TimeOffset+PDD.

[0360] In some embodiments, the UE does not expect to perform uplink and downlink transmission on the symbol corresponding to the SSB to be measured, on one data symbol before each symbol corresponding to the SSB to be measured, and on one data symbol after each symbol corresponding to the SSB to be measured.

[0361] Optionally, uplink transmission may include sending PUCCH (Physical Uplink Control Channel), PUSCH (Physical Uplink Shared Channel), and SRS (Sounding Reference Signal); downlink transmission may include receiving PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), TRS (Track Reference Signal), and CSI-RS (Channel State Information Reference Signal) for CQI (Channel Quality Indication), where the symbol corresponding to the SSB may be determined based on source SSB symbols to be measured+ssb-TimeOffset+PDD.

[0362] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0363] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the above units or modules are realized by designing the logical relationship of the elements in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be implemented by a programmable logic device (PLD), taking a field programmable gate array (FPGA) 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, thereby realizing the functions of some or all of the above units or modules.

[0364] All units or modules of the above devices can be implemented in the form of software called by the processor, or in the form of hardware circuits, or partially implemented in the form of software called by the processor, and the remaining part implemented in the form of hardware circuits. In the embodiment of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above hardware circuit is fixed or reconfigurable, such as a hardware circuit implemented by a processor as an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0365] FIG6 a is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure. As shown in FIG6 a , the terminal may include at least one of: a first transceiver module 611 , a first processing module 612 , and the like.

[0366] In some embodiments, the first transceiver module 611 is configured to receive a first handover command, where the first handover command includes a first parameter;

[0367] The first processing module 612 is configured to determine a first time domain of the signal to be measured for synchronization based on the first parameter, and determine a second time domain for performing scheduling restriction on the current serving cell based on the first time domain.

[0368] In some embodiments, when determining the first time domain of the signal to be measured for synchronization based on the first parameter, the first processing module 612 is specifically configured to: determine the first time domain based on the first parameter and the second parameter;

[0369] The second parameter represents the propagation delay difference between the service link propagation delay of the current service cell and the service link propagation delay of the adjacent cell.

[0370] In some embodiments, when determining, based on the first time domain, a second time domain for scheduling restrictions on the current serving cell, the first processing module 612 is specifically configured to: determine, based on the first time domain and the first time window, whether to execute the first handover command; if it is determined to execute the first handover command, determine that the second time domain is one of the following:

[0371] the first time window;

[0372] at least one time unit before the first time domain within a first time window, and / or at least one time unit after the first time domain within the first time window;

[0373] The first time window is configured by a network device.

[0374] In some embodiments, when determining whether to execute the first handover command based on the first time domain and the first time window, the first processing module 612 is specifically configured to: if the first time domain is within the first time window, determine to execute the first handover command;

[0375] If the first time domain is outside the first time window, it is determined not to execute the first switching command, and to execute the second switching command.

[0376] In some embodiments, when determining the second time domain for performing scheduling restriction on the current serving cell based on the first time domain, the first processing module 612 is specifically configured to perform at least one of the following operations:

[0377] determining the second time domain as the first time domain;

[0378] Determining that the second time domain is at least one time unit before the first time domain;

[0379] The second time domain is determined to be at least one time unit after the first time domain.

[0380] In some embodiments, if the terminal has a capability of supporting scheduling restriction enhancement, the first transceiver module 611 is further configured to:

[0381] A first message is sent to a network device, where the first message includes the second parameter, and the second parameter is used by the network device to determine the first time domain and the second time domain.

[0382] FIG6 b is a schematic diagram of the structure of a network device according to an embodiment of the present disclosure. As shown in FIG6 b , the network device includes at least one of a second transceiver module 621 and a second processing module 622 .

[0383] In some embodiments, the second transceiver module 621 is configured to send a first switching command, where the first switching command includes a first parameter, and the first parameter is used to determine a first time domain of the signal to be measured for synchronization.

[0384] In some embodiments, the second transceiver module 621 is also used to receive a first message sent by the terminal, wherein the first message includes a second parameter; wherein the second parameter represents the propagation delay difference between the service link propagation delay of the current service cell of the terminal and the service link propagation delay of the adjacent cell.

[0385] In some embodiments, the second processing module 622 is configured to determine the first time domain based on the first parameter and the second parameter; and determine a second time domain for performing scheduling restrictions on the current serving cell based on the first time domain.

[0386] In some embodiments, when the first processing module 622 determines the second time domain for performing scheduling restriction on the current serving cell based on the first time domain, it is specifically configured to perform one of the following operations:

[0387] Determining the second time domain as a configured first time window;

[0388] The second time domain is determined to be at least one time unit before the first time domain within the first time window, and / or at least one time unit after the first time domain within the first time window.

[0389] In some embodiments, when the first processing module 622 determines the second time domain for performing scheduling restrictions on the current serving cell based on the first time domain, it is specifically configured to perform at least one of the following operations:

[0390] determining the second time domain as the first time domain;

[0391] Determining that the second time domain is at least one time unit before the first time domain;

[0392] The second time domain is determined to be at least one time unit after the first time domain.

[0393] Figure 7a is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure. Communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 7100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0394] As shown in Figure 7a, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, baseband chip, terminal device, terminal device chip, DU or CU, etc.), execute programs, and process program data. The processor 7101 is used to call instructions to enable the communication device 7100 to perform any of the above methods.

[0395] 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 such as sending and / or receiving in the above method (for example, at least one of steps S203 and S204 shown in FIG2a, but not limited thereto), and the processor 7101 performs at least one of the other steps (for example, at least one of steps S202, S203, S205, and S206 shown in FIG2a, but not limited thereto). In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0396] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memories 7102 may be located outside the communication device 7100.

[0397] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0398] Optionally, the communication device 7100 further includes one or more interface circuits 7104, which are connected to the memory 7102. The interface circuits 7104 may be configured to receive signals from the memory 7102 or other devices, and may be configured to send signals to the memory 7102 or other devices. For example, the interface circuits 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0399] The communication device 7100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 7100 described in the embodiment of the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0400] FIG7 b is a schematic diagram of the structure of a chip 7200 according to an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 7200 shown in FIG7 b , but the present disclosure is not limited thereto.

[0401] The chip 7200 includes one or more processors 7201. The chip 7200 is configured to execute any of the above methods.

[0402] In some embodiments, chip 7200 further includes one or more interface circuits 7202. Optionally, terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 7200 further includes one or more memories 7203 for storing data. Optionally, all or part of memory 7203 may be located outside chip 7200. Optionally, interface circuit 7202 is connected to memory 7203 and may be used to receive data from memory 7203 or other devices, or may be used to send data to memory 7203 or other devices. For example, interface circuit 7202 may read data stored in memory 7203 and send the data to processor 7201.

[0403] In some embodiments, the interface circuit 7202 performs at least one of the communication steps, such as sending and / or receiving, in the above-described method (e.g., at least one of steps S201 and S204 shown in FIG. 2 a , but not limited thereto). The interface circuit 7202 performing the communication steps, such as sending and / or receiving, in the above-described method, for example, means that the interface circuit 7202 performs data exchange between the processor 7201, the chip 7200, the memory 7203, or the transceiver device. In some embodiments, the processor 7201 performs at least one of the other steps (e.g., at least one of steps S202, S203, S205, and S206 shown in FIG. 2 a , but not limited thereto).

[0404] The present disclosure also provides a program product, which, when executed by the communication device 7100, enables the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0405] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0406] The technical solutions described in the embodiments of the present disclosure can be combined arbitrarily unless there is any conflict.

[0407] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow from the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0408] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A communication method, characterized in that: The method is executed by a terminal, and includes: receiving a first switching command, wherein the first switching command includes a first parameter; Determining a first time domain of a signal to be measured for synchronization based on the first parameter; Based on the first time domain, a second time domain for performing scheduling restrictions on the current serving cell is determined.

2. The method according to claim 1, characterized in that The determining, based on the first parameter, a first time domain of the signal to be measured for synchronization includes: determining the first time domain based on the first parameter and the second parameter; The second parameter represents the propagation delay difference between the service link propagation delay of the current service cell and the service link propagation delay of the adjacent cell.

3. The method according to claim 2, characterized in that The determining, based on the first time domain, a second time domain for performing scheduling restriction on the current serving cell includes: determining whether to execute the first switching command based on the first time domain and the first time window; If it is determined to execute the first switching command, the second time domain is determined to be one of the following: the first time window; At least one time unit before the first time domain within a first time window, and / or at least one time unit after the first time domain within the first time window.

4. The method according to claim 3, characterized in that The determining whether to execute the first switching command based on the first time domain and the first time window includes: If the first time domain is within the first time window, determining to execute the first switching command; If the first time domain is outside the first time window, it is determined not to execute the first switching command, and to execute the second switching command.

5. The method according to claim 1 or 2, characterized in that The determining, based on the first time domain, a second time domain for performing scheduling restriction on the current serving cell includes at least one of the following: determining the second time domain as the first time domain; Determining that the second time domain is at least one time unit before the first time domain; The second time domain is determined to be at least one time unit after the first time domain.

6. The method according to any one of claims 2 to 5, characterized in that If the terminal has a capability of supporting scheduling restriction enhancement, the method further includes: Send a first message to a network device, wherein the first message includes the second parameter, and the second parameter is used by the network device The first time domain and the second time domain are determined.

7. A communication method, characterized in that: The method is performed by a network device, and includes: A first switching command is sent, where the first switching command includes a first parameter, where the first parameter is used to determine a first time domain of a signal to be measured for synchronization.

8. The method according to claim 7, characterized in that The method further comprises: receiving a first message sent by a terminal, where the first message includes a second parameter; The second parameter represents a propagation delay difference between a service link propagation delay of a current service cell of the terminal and a service link propagation delay of a neighboring cell.

9. The method according to claim 8, characterized in that The method further comprises: determining the first time domain based on the first parameter and the second parameter; Based on the first time domain, a second time domain for performing scheduling restrictions on the current serving cell is determined.

10. The method according to claim 9, characterized in that The determining, based on the first time domain, a second time domain for performing scheduling restriction on the current serving cell includes one of the following: Determining the second time domain as a configured first time window; The second time domain is determined to be at least one time unit before the first time domain within the first time window, and / or at least one time unit after the first time domain within the first time window.

11. The method according to claim 9, characterized in that The determining, based on the first time domain, a second time domain for performing scheduling restriction on the current serving cell includes at least one of the following: determining the second time domain as the first time domain; Determining that the second time domain is at least one time unit before the first time domain; The second time domain is determined to be at least one time unit after the first time domain.

12. A terminal, characterized in that: include: A first transceiver module is configured to receive a first switching command, where the first switching command includes a first parameter; The first processing module is configured to determine a first time domain of a signal to be measured for synchronization based on the first parameter, and determine a second time domain for performing scheduling restrictions on a current serving cell based on the first time domain.

13. A network device, characterized in that: include: The second transceiver module is configured to send a first switching command, where the first switching command includes a first parameter, and the first parameter is used to determine a first time domain of the signal to be measured for synchronization.

14. A terminal, characterized in that: include: one or more processors; The processor is configured to execute the communication method according to any one of claims 1 to 6.

15. A network device, characterized in that: include: one or more processors; The processor is configured to execute the communication method according to any one of claims 7 to 11.

16. A communication system, characterized in that: include: A terminal and a network device, wherein the terminal is used to implement the method according to any one of claims 1 to 6, and the network device is used to implement the method according to any one of claims 7 to 11.

17. A computer-readable storage medium having a computer program stored thereon, characterized in that: The computer-readable storage medium stores executable instructions, which are loaded and executed by the processor to implement the method according to any one of claims 1 to 6 or claims 7 to 11.

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