Communication method and device

Abstract

The embodiment of the invention discloses a communication method and device. The method comprises the following steps: a terminal determines that a first secondary cell SCell is a cell of an on-demand request synchronization signal block SSB; and the terminal requests the network equipment to send the SSB in the first SCell. By implementing the embodiments of the present disclosure, the problem of when and how to request a cell requesting SSB on demand to send SSB by a terminal in a carrier aggregation scene can be solved, so that the terminal can communicate with the cell requesting SSB on demand.

Description

Communication method and device Technical Field

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

[0002] With the gradual application of large-scale active antenna arrays and the large-scale construction of fifth-generation (5G) mobile networks, the energy consumption of wireless communication networks has increased significantly. The growth rate of energy consumption costs has even exceeded the revenue growth of operators. Therefore, network energy saving has become an important means for operators to reduce the cost of operating 5G systems.

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure provide a communication method and apparatus.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by a terminal. The method includes: determining that a first secondary cell SCell is a cell that requests a synchronization signal block SSB on demand; and requesting the first SCell to send the SSB to a network device.

[0006] According to the second aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by a network device, and the method includes: receiving second indication information sent by a terminal through a second cell, the second indication information being used to instruct the network device to send a synchronization signal block SSB in the first secondary cell SCell; the first SCell is a cell that requests SSB on demand; wherein the second cell and the first SCell are carrier aggregated.

[0007] According to the third aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by a network device, and the method includes: receiving first information sent by a terminal, the first information being information sent by the terminal on a first SCell, and the first information being used to instruct the network device to send a synchronization signal block SSB on the first SCell; the first SCell is a cell that requests SSB on demand.

[0008] According to the fourth aspect of an embodiment of the present disclosure, a terminal is proposed, including: a processing module for determining that a first secondary cell SCell is a cell that requests a synchronization signal block SSB on demand; and a transceiver module for requesting the first SCell to send the SSB to a network device.

[0009] According to the fifth aspect of an embodiment of the present disclosure, a network device is proposed, including: a transceiver module for receiving second indication information sent by a terminal through a second cell, wherein the second indication information is used to instruct the network device to send a synchronization signal block SSB in the first secondary cell SCell; the first SCell is a cell that requests SSB on demand; wherein the second cell and the first SCell are carrier aggregated.

[0010] According to the sixth aspect of an embodiment of the present disclosure, a network device is proposed, including: a transceiver module for receiving first information sent by a terminal, wherein the first information is information sent by the terminal on a first SCell, and the first information is used to instruct the network device to send a synchronization signal block SSB on the first SCell; the first SCell is a cell that requests SSB on demand.

[0011] According to a seventh aspect of an embodiment of the present disclosure, a communication system is provided, including:

[0012] A terminal, configured to execute an optional implementation of the first aspect;

[0013] A network device is configured to execute the optional implementation of the aforementioned second and third aspects.

[0014] According to an eighth aspect of an embodiment of the present disclosure, a communication device is provided, including: one or more processors;

[0015] The processor is used to call instructions to enable the communication device to execute the optional implementation methods of the aforementioned first aspect, second aspect and third aspect.

[0016] According to the ninth aspect of the embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes the optional implementation methods of the aforementioned first aspect, second aspect and third aspect.

[0017] According to the technical solution disclosed in the present invention, the problem of when and how the terminal requests the "on-demand SSBSCell" to send SSB in the carrier aggregation scenario can be solved, so that the terminal can communicate with the on-demand SSB cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0019] FIG1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure;

[0020] FIG2A is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure;

[0021] FIG2B is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure;

[0022] FIG2C is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure;

[0023] FIG2D is an interactive schematic diagram illustrating a communication method according to an embodiment of the present disclosure;

[0024] FIG3A is a flow chart showing a communication method according to an embodiment of the present disclosure;

[0025] FIG3B is a flow chart illustrating a communication method according to an embodiment of the present disclosure;

[0026] FIG3C is a flow chart illustrating a communication method according to an embodiment of the present disclosure;

[0027] FIG3D is a flow chart illustrating a communication method according to an embodiment of the present disclosure;

[0028] FIG3E is a flow chart illustrating a communication method according to an embodiment of the present disclosure;

[0029] FIG4A is a flow chart showing a communication method according to an embodiment of the present disclosure;

[0030] FIG4B is a flow chart showing a communication method according to an embodiment of the present disclosure;

[0031] FIG4C is a flow chart showing a communication method according to an embodiment of the present disclosure;

[0032] FIG4D is a flow chart showing a communication method according to an embodiment of the present disclosure;

[0033] FIG4E is a flow chart showing a communication method according to an embodiment of the present disclosure;

[0034] FIG4F is a flow chart illustrating a communication method according to an embodiment of the present disclosure;

[0035] FIG5A is an interactive diagram of a communication method proposed in an embodiment of the present disclosure;

[0036] FIG5B is an interactive diagram of the communication method proposed in an embodiment of the present disclosure;

[0037] FIG6A is a schematic structural diagram of a terminal proposed in an embodiment of the present disclosure;

[0038] FIG6B is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure;

[0039] FIG7A is a schematic structural diagram of a communication device 7100 proposed in an embodiment of the present disclosure;

[0040] FIG7B is a schematic structural diagram of a chip 7200 according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0041] The embodiments of the present disclosure provide a communication method and a device thereof.

[0042] In a first aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a terminal and includes: determining that a first secondary cell SCell is a cell that requests a synchronization signal block SSB on demand; and requesting the first SCell to send the SSB to a network device.

[0043] In the above embodiment, when the terminal determines that a certain SCell is a cell that requests SSB on demand (on-demand SSBSCell), the terminal requests the network device to send SSB to the SCell, which can solve the problem of when and how the terminal requests the "cell that requests SSB on demand (on-demand SSBSCell)" to send SSB in the carrier aggregation scenario, thereby enabling the terminal to communicate with the cell that requests SSB on demand.

[0044] In combination with some embodiments of the first aspect, in some embodiments, determining that the first secondary cell SCell is a cell that requests a synchronization signal block SSB on demand includes: determining that the first SCell is a cell that requests an SSB on demand based on the terminal implementation.

[0045] In the above embodiment, it is possible to determine based on the terminal implementation that a certain SCell is a cell that requests SSB on demand (on-demand SSBSCell), so that the terminal can request the network device to send SSB from the SCell. This can solve the problem of when and how the terminal requests the "cell that requests SSB on demand (on-demand SSBSCell)" to send SSB in the carrier aggregation scenario, thereby enabling the terminal to communicate with the cell that requests SSB on demand.

[0046] In combination with some embodiments of the first aspect, in some embodiments, the determining that the first SCell is a cell that requests SSB on demand based on the terminal includes: if the SSB of the first SCell cannot be detected at the SSB reception time of the first SCell, then determining that the first SCell is the cell that requests SSB on demand.

[0047] In the above embodiment, if the SSB of the first SCell cannot be detected at the SSB reception moment of the first SCell, it can be considered that the SSB of the first SCell is not sent periodically, but needs to be sent by the terminal on demand, that is, the first SCell can be determined as a cell that requests SSB on demand.

[0048] In combination with some embodiments of the first aspect, in some embodiments, determining that the first secondary cell SCell is a cell that requests a synchronization signal block SSB on demand includes: receiving first indication information sent by the network device, the first indication information being used to indicate whether the first SCell is the cell that requests the SSB on demand; and determining that the first SCell is the cell that requests the SSB on demand based on the first indication information.

[0049] In the above embodiment, the network device can indicate whether a certain SCell is a cell requesting SSB on demand, so that the terminal can determine that the SCell is a cell requesting SSB on demand based on the indication, and thus request the network device to send SSB to the SCell. This can solve the problem of when and how the terminal requests the "cell requesting SSB on demand (on-demand SSBSCell)" to send SSB in the carrier aggregation scenario, so that the terminal can communicate with the cell requesting SSB on demand.

[0050] In combination with some embodiments of the first aspect, in some embodiments, the first indication information is a newly defined information element IE, and the first indication information is carried in one of the following information elements: serving cell common configuration ServingCellConfigCommon; serving cell configuration ServingCellConfig; secondary cell configuration ScellConfig.

[0051] In combination with some embodiments of the first aspect, in some embodiments, the requesting the network device to send a synchronization signal block SSB in the first SCell includes: sending second indication information to the network device through a second cell, and the second indication information is used to instruct the network device to send the SSB in the first SCell; wherein the second cell and the first SCell carrier are aggregated.

[0052] In the above embodiment, the terminal can send the second indication information to the network device through the second cell, so that the network device can send SSB in the first SCell (that is, the cell for requesting SSB on demand determined by the terminal), which can solve the problem of when and how the terminal requests the "cell for requesting SSB on demand (on-demand SSBSCell)" to send SSB in the carrier aggregation scenario, thereby enabling the terminal to communicate with the cell for requesting SSB on demand.

[0053] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: receiving a first radio resource control RRC signaling sent by the network device, the first RRC signaling including at least one SCell; wherein, sending the second indication information to the network device through the second cell includes: the at least one SCell includes the first SCell, and sending the second indication information to the network device through the second cell.

[0054] In combination with some embodiments of the first aspect, in some embodiments, the first RRC signaling is signaling added and / or modified by the SCell.

[0055] In the above embodiment, upon receiving RRC signaling of SCell addition and / or modification, the terminal can indicate to the network device through the second indication information that the SCell (i.e., the cell for on-demand SSB request determined by the terminal) needs to send SSB, which can solve the problem of when and how the terminal requests the "cell for on-demand SSBSCell" to send SSB in the carrier aggregation scenario, thereby enabling the terminal to communicate with the cell for on-demand SSB request.

[0056] In combination with some embodiments of the first aspect, in some embodiments, the second indication information is a second RRC signaling, and the second RRC signaling includes an identifier of one or more SCells among the at least one SCell and / or an SSB request indication of the one or more SCells; the one or more SCells are SCells among the at least one SCell; wherein the one or more SCells include the first SCell.

[0057] In combination with some embodiments of the first aspect, in some embodiments, the second indication information is a media access control-control element MAC-CE; wherein the MAC-CE includes a first bitmap, the first bitmap is used to indicate whether the corresponding SCell is requested to send an SSB, the first bitmap contains one or more first indication bits, the one or more first indication bits are used to indicate whether the corresponding SCell is requested to send an SSB, and the one or more first indication bits correspond one-to-one to the at least one SCell; or, the MAC-CE includes a second bitmap, the second bitmap is used to indicate whether one or more third cells are requested to send an SSB, the second bitmap includes one or more second indication bits, the one or more second indication bits are used to indicate whether the corresponding third cell is requested to send an SSB, the one or more second indication bits correspond one-to-one to the one or more third cells, the one or more third cells are one or more cells among the at least one SCell that request a synchronization signal block SSB on demand, and the one or more third cells include the first SCell.

[0058] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: receiving an SCell activation / deactivation MAC CE sent by the network device, the SCell activation / deactivation MAC CE including an activation / deactivation indication bit of each SCell in at least one SCell; wherein, sending the second indication information to the network device through the second cell includes: the at least one SCell includes the first SCell and the first SCell is an activated SCell, and sending the second indication information to the network device through the second cell.

[0059] In the above embodiment, upon receiving the SCell activation / deactivation MAC CE, the terminal can indicate to the network device through the second indication information that the SCell (i.e., the cell for requesting SSB on demand determined by the terminal) needs to send SSB, which can solve the problem of when and how the terminal requests the "cell for requesting SSB on demand (on-demand SSBSCell)" to send SSB in the carrier aggregation scenario, thereby enabling the terminal to communicate with the cell for requesting SSB on demand.

[0060] In combination with some embodiments of the first aspect, in some embodiments, sending the second indication information to the network device through the second cell includes: determining the need for time and frequency synchronization with the first SCell; and sending the second indication information to the network device through the second cell.

[0061] In the above embodiment, the terminal can synchronize time and frequency with the SCell (i.e., the cell requesting SSB on demand) when needed, and instruct the network device through the second indication information that the SCell needs to send SSB, which can solve the problem of when and how the terminal requests the "cell requesting SSB on demand (on-demand SSBSCell)" to send SSB in the carrier aggregation scenario, thereby enabling the terminal to communicate with the cell requesting SSB on demand.

[0062] In combination with some embodiments of the first aspect, in some embodiments, sending the second indication information to the network device through the second cell includes: determining that layer 1 / layer 3 measurement needs to be performed on the first SCell; and sending the second indication information to the network device through the second cell.

[0063] In the above embodiment, the terminal can perform layer 1 / layer 3 measurement on the SCell (i.e., the cell requesting SSB on demand) when it needs to, and instruct the network device through the second indication information that the SCell needs to send SSB, which can solve the problem of when and how the terminal requests the "cell requesting SSB on demand (on-demand SSBSCell)" to send SSB in the carrier aggregation scenario, thereby enabling the terminal to communicate with the cell requesting SSB on demand.

[0064] In combination with some embodiments of the first aspect, in some embodiments, the requesting the network device to send a synchronization signal block SSB in the first SCell includes: sending first information to the network device on the first SCell, wherein the first information is used to instruct the network device to send the SSB in the first SCell.

[0065] In the above embodiment, the terminal can request the SCell (i.e., the cell for requesting SSB on demand determined by the terminal) to send SSB on the SCell, which can solve the problem of when and how the terminal requests the "cell for requesting SSB on demand (on-demand SSBSCell)" to send SSB in the carrier aggregation scenario, thereby enabling the terminal to communicate with the cell for requesting SSB on demand.

[0066] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: obtaining the configuration of the first information associated with the first SCell from a system information block SIB or dedicated RRC signaling.

[0067] In combination with some embodiments of the first aspect, in some embodiments, sending the first information to the network device includes: sending the first information to the network device based on the configuration of the first information associated with the first SCell.

[0068] In combination with some embodiments of the first aspect, in some embodiments, the configuration of the first information associated with the first SCell includes at least one of the following: the initial transmission power of the first information, or a parameter used to calculate the initial transmission power; the power climbing step of the first information; the maximum number of transmissions of the first information; the preamble code index or sequence reserved for the first information; the configuration information of the random access opportunity RO resources, the RO resources are used to send the first information; the configuration of the timer, the timer is used to indicate the length of time the terminal listens to the SSB sent by the first SCell, and the timer is used by the terminal to determine whether the first information needs to be resent.

[0069] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: receiving a random access response media access control protocol data unit MAC PDU including a header of a random access preamble identifier RAPID of the preamble code index or sequence, and determining that the network device confirms the SSB request for the first SCell.

[0070] In the second aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a network device, and the method includes: receiving second indication information sent by a terminal through a second cell, the second indication information being used to instruct the network device to send a synchronization signal block SSB in the first secondary cell SCell; the first SCell is a cell that requests SSB on demand; wherein the second cell and the first SCell are carrier aggregated.

[0071] In combination with some embodiments of the second aspect, in some embodiments, the method further includes: sending first RRC signaling, the first RRC signaling includes at least one SCell, and the at least one SCell includes the first SCell.

[0072] In combination with some embodiments of the second aspect, in some embodiments, the first RRC signaling is signaling added and / or modified by the SCell.

[0073] In combination with some embodiments of the second aspect, in some embodiments, the second indication information is a second RRC signaling, and the second RRC signaling includes an identifier of one or more SCells among the at least one SCell and / or an SSB request indication of the one or more SCells; the one or more SCells are SCells among the at least one SCell; wherein the one or more SCells include the first SCell.

[0074] In combination with some embodiments of the second aspect, in some embodiments, the first SCell is an added and / or modified SCell, and the second indication information is a media access control-control element MAC-CE; wherein, the MAC-CE includes a first bitmap, the first bitmap is used to indicate whether the corresponding SCell is requested to send SSB, the first bitmap contains one or more first indication bits, the one or more first indication bits are used to indicate whether the corresponding SCell is requested to send SSB, and the one or more first indication bits correspond one-to-one to the at least one SCell; or, the MAC-CE includes a second bitmap, the second bitmap is used to indicate whether one or more third cells are requested to send SSB, the second bitmap includes one or more second indication bits, the one or more second indication bits are used to indicate whether the corresponding third cell is requested to send SSB, the one or more second indication bits correspond one-to-one to the one or more third cells, the one or more third cells are one or more cells among the at least one SCell that request synchronization signal blocks SSB on demand, and the one or more third cells include the first SCell.

[0075] In combination with some embodiments of the second aspect, in some embodiments, the method further includes: sending an SCell activation / deactivation MAC CE, wherein the SCell activation / deactivation MAC CE includes an activation / deactivation indication bit of each SCell in at least one SCell, and the at least one SCell includes the first SCell.

[0076] In combination with some embodiments of the second aspect, in some embodiments, the first SCell associated in the second indication information is an SCell requiring time-frequency synchronization; or, the first SCell associated in the second indication information is an SCell requiring layer 1 / layer 3 measurement.

[0077] In combination with some embodiments of the second aspect, in some embodiments, the method further includes: sending first indication information to the terminal, the first indication information being used to indicate whether the first SCell is the cell for the on-demand SSB request; wherein the first indication information is used by the terminal to determine that the first SCell is the cell for the on-demand SSB request.

[0078] In combination with some embodiments of the second aspect, in some embodiments, the first indication information is a newly defined information element IE, and the first indication information is carried in one of the following information elements: serving cell common configuration ServingCellConfigCommon; serving cell configuration ServingCellConfig; secondary cell configuration ScellConfig.

[0079] In a third aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a network device, and the method includes: receiving first information sent by a terminal, the first information being information sent by the terminal on a first SCell, and the first information being used to instruct the network device to send a synchronization signal block SSB on the first SCell; the first SCell is a cell that requests SSB on demand.

[0080] In combination with some embodiments of the third aspect, in some embodiments, the method further includes: sending a system information block SIB or dedicated radio resource control RRC signaling, wherein the SIB or the dedicated RRC signaling includes the configuration of the first information associated with the first SCell.

[0081] In combination with some embodiments of the third aspect, in some embodiments, the configuration of the first information associated with the first SCell includes at least one of the following: the initial transmission power of the first information, or a parameter used to calculate the initial transmission power; the power climbing step of the first information; the maximum number of transmissions of the first information; the preamble code index or sequence reserved for the first information; the configuration information of the random access opportunity RO resources, the RO resources are used to send the first information; the configuration of the timer, the timer is used to indicate the length of time the terminal listens to the SSB sent by the first SCell, and the timer is used by the terminal to determine whether the first information needs to be resent.

[0082] In combination with some embodiments of the third aspect, in some embodiments, the method further includes: sending a random access response media access control protocol data unit MACPDU to the terminal, the random access response MACPDU including a header of a random access preamble identifier RAPID of the preamble code index or sequence.

[0083] In a fourth aspect, an embodiment of the present disclosure proposes a terminal, comprising at least one of a transceiver module and a processing module; wherein the terminal is used to execute the optional implementation method of the first aspect.

[0084] In a fifth aspect, an embodiment of the present disclosure proposes a network device, comprising at least one of a transceiver module and a processing module; wherein the above-mentioned network device is used to execute the optional implementation method of the second aspect.

[0085] In a sixth aspect, an embodiment of the present disclosure proposes a network device, comprising at least one of a transceiver module and a processing module; wherein the above-mentioned network device is used to execute the optional implementation method of the third aspect.

[0086] In a seventh aspect, an embodiment of the present disclosure provides a communication system, including:

[0087] A terminal configured as an optional implementation of the first aspect;

[0088] A network device is configured to execute the optional implementation of the aforementioned second and third aspects.

[0089] In an eighth aspect, an embodiment of the present disclosure proposes a communication device, comprising: one or more processors; wherein the processor is used to call instructions to enable the communication device to execute the optional implementation method of the aforementioned first aspect.

[0090] In a ninth aspect, an embodiment of the present disclosure proposes a communication device, comprising: one or more processors; wherein the processor is used to call instructions to enable the communication device to execute the optional implementation method of the aforementioned second aspect.

[0091] In the tenth aspect, an embodiment of the present disclosure proposes a communication device, comprising: one or more processors; wherein the processor is used to call instructions to enable the communication device to execute the optional implementation method of the aforementioned third aspect.

[0092] In an eleventh aspect, an embodiment of the present disclosure proposes a storage medium storing instructions, which, when executed on a communication device, enables the communication device to execute optional implementations of the aforementioned first and second aspects.

[0093] In a twelfth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation of the first, second and third aspects.

[0094] In a thirteenth 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, second and third aspects.

[0095] In a fourteenth aspect, an embodiment of the present disclosure provides a chip or a chip system, which includes a processing circuit configured to execute the method described in the optional implementation of the first, second, and third aspects above.

[0096] It is understandable that the above-mentioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0097] The present disclosure provides a communication method and apparatus thereof. In some embodiments, the terms information processing method, communication method, etc. are interchangeable, the terms information processing apparatus, communication apparatus, etc. are interchangeable, and the terms information processing system, communication system, etc. are interchangeable.

[0098] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0099] 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.

[0100] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0101] 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.

[0102] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0103] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0104] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0105] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0106] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0107] 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.

[0108] In some embodiments, terms such as "time / frequency" and "time / frequency domain" refer to the time domain and / or the frequency domain.

[0109] 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.

[0110] 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.

[0111] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0112] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0113] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0114] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0115] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0116] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0117] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. The communication system may include, but is not limited to, one terminal and one network device. The number and configuration of devices shown in Figure 1 are for example purposes only and do not limit the present disclosure. In practical applications, two or more terminals and two or more network devices may be included. The communication system 100 shown in Figure 1 includes, for example, one terminal 101 and one network device 102.

[0118] In some embodiments, the terminal 101 herein may be an entity on the user side for receiving or transmitting signals, such as a mobile phone. It may also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal may be a car with communication capabilities, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver capabilities, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

[0119] In some embodiments, network device 102 may be a network device associated with a first SCell (secondary cell) as described herein. Network device 102's association with the first SCell may mean that network device 102 sends and / or receives information or signals within the first SCell. Network device 102 may also be a network device associated with a second cell as described herein. Network device 102's association with the second cell may mean that network device 102 sends and / or receives information or signals within the second cell.

[0120] In some embodiments, the second cell and the first SCell are carrier aggregated, or in other words, there is a carrier aggregation relationship between the second cell and the first SCell. In some embodiments, the second cell may be the primary cell corresponding to the first SCell, or the second cell and the first SCell may have overlapping coverage or adjacent coverage, that is, the second cell and the first SCell are in a neighboring cell relationship. Exemplarily, the second cell may also be another normal SCell, or the second cell may also be an NES cell for which the terminal has acquired an SSB.

[0121] In some embodiments, the network device 102 may be an access network device. In some embodiments, the access network device is, for example, a node or device that connects a terminal device to a wireless network. The access network device may include at least one of an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a NodeB (NB), a home nodeB (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 RAN, a cloud RAN, a base station in other communication systems, and an access node in a Wi-Fi system, but is not limited thereto.

[0122] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0123] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0124] 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.

[0125] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0126] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0127] It's important to note that with the increasing demand for speed, latency, high-speed mobility, and energy efficiency, coupled with the increasing diversity and complexity of future services, the 3GPP (3rd Generation Partnership Project) international standards organization has begun developing 5G. The main application scenarios for 5G are: enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine-type communications (mMTC). eMBB continues to focus on providing users with multimedia content, services, and data, and demand for it is growing rapidly. However, since eMBB can be deployed in diverse scenarios, such as indoors, in urban areas, and in rural areas, its capabilities and requirements vary significantly, making a generalized approach difficult and requiring detailed analysis based on specific deployment scenarios. Typical applications of URLLC include industrial automation, power automation, remote medical operations (surgery), and traffic safety. mMTC's key features include high connection density, low data volumes, latency-insensitive services, low module costs, and a long service life.

[0128] Since the energy consumption of 5G base stations is four times that of LTE base stations, network energy saving is an important means for operators to reduce the cost of operating 5G systems. In some embodiments, in order to save energy in the RRC connected state (RRC_CONNECTED) terminal, WUS (wake up signal) is introduced. An offset in front of the on duration of UE C-DRX (Connected Discontinuous Reception) defines a duration for sending a WUS signal. During this WUS duration, the WUS signal, i.e., DCI 2-6, is sent and scrambled by PS-RNTI (Power Saving RNTI) to indicate whether the terminal wakes up to monitor PDCCH (Physical Downlink Control Channel) during the next UE C-DRX onduration.

[0129] In some embodiments, a paging WUS (paging wake-up signal) is introduced to save energy in RRC_IDLE / INACTIVE terminals. This WUS, also known as the PEI (paging early indication), is sent sometime before the paging occasion (PO) to indicate whether the terminal is monitoring paging schedule information at that PO. The PEI is DCI 2-7, scrambled by the PEI-RNTI (paging early indication radio network temporary identifier).

[0130] In some embodiments, Network Energy Saving (NES) already supports SSB-less SCells in inter-band CA scenarios. SSB-less SCells do not transmit SSBs. UEs use the SSBs of the primary cell (PCell) to implement time-frequency synchronization, L1 / L3 (Layer 1 / Layer 3) measurements, and SCell activation on the SCell. However, SSB-less in inter-band CA scenarios has many limitations, such as PCell and SCell co-location and operation only in frequency band FR1. Frequency band FR2 and non-co-site scenarios are not supported.

[0131] In some embodiments, R19 NES supports FR2 and non-co-site scenarios, and on-demand SSB can be used as an enhancement to SSB transmission for scenarios not covered by SSB-less operation to achieve network element gain and ensure appropriate / enhanced SCell functions, including time / frequency synchronization, L1 / L3 measurement and SCell activation. If the terminal needs to obtain the SSB of an on-demand SSBSCell (SCell that requests SSB on demand), the UL WUS wake-up signal can be used to request SSB from the on-demand SSBSCell. In other words, the SSB of the SCell is sent based on request, or on-demand request.

[0132] In the carrier aggregation scenario, the on-demand SSB SCell can send SSB based on the terminal's request. However, under what conditions and how the terminal should request the on-demand SSB SCell to send SSB is a question that needs to be clarified.

[0133] Based on this, the embodiments of the present disclosure provide a communication method and device thereof, which can solve the problem of when and how the terminal requests the "cell requesting SSB on demand" to send SSB in the carrier aggregation scenario, thereby enabling the terminal to communicate with the cell requesting SSB on demand.

[0134] Figure 2A is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2A, the communication method according to the embodiment of the present disclosure can be applied to a communication system 100, and the method includes but is not limited to the following steps.

[0135] Step S2101: Terminal 101 determines, based on terminal 101 implementation, that the first SCell is a cell that requests SSB on demand.

[0136] In some embodiments, the terms "NES cell", "NES SCell" and "cell requesting SSB on demand" in this disclosure can be used interchangeably.

[0137] In some embodiments, the terminal 101 may determine whether the first SCell is a cell that requests an SSB on demand based on the implementation of the terminal 101. Exemplarily, the terminal 101 determines whether the first SCell is a cell that requests an SSB on demand, that is, the terminal 101 determines whether the SSB of the first SCell is sent based on a request.

[0138] In one possible implementation, if the terminal 101 fails to detect the SSB of the first SCell at the SSB reception moment of the first SCell, it is determined that the first SCell is a cell that requests SSB on demand. In some embodiments, in the first scenario, the terminal 101 determines whether the SSB of the first SCell can be detected at the SSB reception moment of the first SCell. If the terminal 101 detects the SSB of the first SCell at the SSB reception moment of the first SCell, it can be considered that the first SCell is not a cell that requests SSB on demand. For example, it can be considered that the first SCell is a cell that can periodically send SSB (such as a normal cell), that is, the SSB of the first SCell is not sent based on request, such as the SSB of the first SCell is sent periodically. If the terminal 101 fails to detect the SSB of the first SCell at the SSB reception moment of the first SCell, it can be determined that the first SCell is a cell that requests SSB on demand, or that the SSB of the first SCell is sent based on request. Exemplarily, the SSB reception time of the first SCell may be notified to the terminal by the network device, so that the terminal determines whether the SSB of the first SCell can be detected at the SSB reception time of the first SCell. If the terminal cannot detect the SSB of the first SCell at the SSB reception time of the first SCell, it can be determined that the first SCell is a cell that requests SSB on demand. Optionally, if the terminal detects the SSB of the first SCell at the SSB reception time of the first SCell, it can be determined that the first SCell is not a cell that requests SSB on demand, and the first SCell can be considered to be a normal cell (or a normal secondary cell).

[0139] In some embodiments, the first scenario described above may include, but is not limited to, any of the following: SCell addition / modification; SCell activation; SCell time-frequency synchronization; and SCell measurement. Exemplarily, when adding / modifying an SCell, if the terminal 101 fails to detect the SSB of the first SCell at the SSB reception time of the first SCell, the terminal determines that the first SCell is a cell requesting SSBs on demand. Exemplarily, when activating an SCell, if the terminal 101 fails to detect the SSB of the first SCell at the SSB reception time of the first SCell, the terminal determines that the first SCell is a cell requesting SSBs on demand. Exemplarily, when performing SCell time-frequency synchronization, if the terminal 101 fails to detect the SSB of the first SCell at the SSB reception time of the first SCell, the terminal determines that the first SCell is a cell requesting SSBs on demand. Exemplarily, when performing SCell measurement, if the terminal 101 fails to detect the SSB of the first SCell at the SSB reception time of the first SCell, the terminal determines that the first SCell is a cell requesting SSBs on demand. "SCell time-frequency synchronization" may refer to SCell time domain synchronization and / or frequency domain synchronization. The SCell measurement may include but is not limited to measurement of layer 1 / layer 3 of the SCell.

[0140] In step S2102, the terminal 101 sends second indication information to the network device 102 through the second cell, where the second indication information is used to instruct the network device 102 to send SSB in the first SCell.

[0141] In some embodiments, the second indication information may be sent by the terminal 101. For example, the second indication information may be sent by the terminal 101 to the network device 102, that is, the terminal 101 sends the second indication information to the network device 102, and accordingly, the network device 102 receives the second indication information sent by the terminal 101.

[0142] In some embodiments, the second indication information may be sent by the terminal 101 via the second cell. Exemplarily, the second indication information may be sent by the terminal 101 to the network device 102 via the second cell, i.e., the terminal 101 sends the second indication information to the network device 102 via the second cell, and accordingly, the network device 102 receives the second indication information sent by the terminal 101 via the second cell. Exemplarily, the terminal 101 sending the second indication information via the second cell may mean that the terminal 101 sends the second indication information using a UL grant (uplink grant) configured by the second cell for the terminal 101.

[0143] In an embodiment of the present disclosure, when the terminal 101 determines that the first SCell is a cell that requests SSB on demand, the terminal 101 may send second indication information to the network device 102 through the second cell, and the second indication information is used to instruct the network device 102 to send SSB in the first SCell. Exemplarily, based on the terminal 101 determining that the first SCell is a cell that requests SSB on demand, the terminal 101 may send second indication information to the network device 102 through the second cell, and the second indication information is used to instruct the network device 102 to send SSB in the first SCell. Exemplarily, the terminal 101 may instruct the network device 102 that the first SCell needs to send SSB through the second indication information.

[0144] In some embodiments, the second cell and the first SCell are carrier aggregated. Exemplarily, there is a carrier aggregation relationship between the second cell and the first SCell. The second cell may be a primary cell corresponding to the first SCell, or the second cell is an SCell carrier aggregated with the first SCell. Exemplarily, the second cell may also be another normal SCell, or the second cell may also be an SCell for which the terminal has acquired an SSB.

[0145] It should be noted that, in some embodiments, the first SCell may be an SCell added and / or modified to the terminal 101 by the network device 102, the first SCell may be an SCell that needs to be activated, the first SCell may be an SCell that needs time-frequency synchronization, or the first SCell may be an SCell that needs layer 1 / layer 3 measurement. Exemplarily, the first SCell may be an SCell in any of the following scenarios: SCell addition and / or modification; SCell activation; SCell time-frequency synchronization; SCell measurement, etc. In different scenarios, when the terminal 101 determines that the first SCell is a cell that requests an SSB on demand, the terminal 101 may send a second indication message to the network device 102 via a second cell to instruct the network device 102 to send an SSB in the first SCell. The following examples illustrate implementation methods for the four scenarios of SCell addition and / or modification, SCell activation, SCell time-frequency synchronization, and SCell measurement.

[0146] Scenario 1: SCell addition and / or modification

[0147] In some embodiments, terminal 101 receives first RRC (Radio Resource Control) signaling sent by network device 102, where the first RRC signaling includes at least one SCell. The at least one SCell includes a first SCell. If terminal 101 determines that the first SCell is a cell requesting an SSB on demand, terminal 101 may send the second indication information to network device 102 via a second cell.

[0148] Exemplarily, the first RRC signaling is sent by the network device 102 to the terminal 101, that is, the network device 102 sends the first RRC signaling to the terminal 101, and accordingly, the terminal 101 receives the first RRC signaling sent by the network device 102. The terminal 101 receives the first RRC signaling sent by the network device 102, determines that the at least one SCell included in the first RRC signaling includes the first SCell, and the terminal 101 determines that the first SCell is a cell that requests SSB on demand, then the second indication information can be sent to the network device 102 through the second cell to instruct the network device 102 to send the SSB in the first SCell.

[0149] In some embodiments, the first RRC signaling may be signaling for adding and / or modifying an SCell. Exemplarily, terminal 101 receives first RRC signaling for adding and / or modifying an SCell sent by network device 102, where the first RRC signaling includes at least one SCell (the SCell may be the added and / or modified SCell). The at least one SCell includes a first SCell. If terminal 101 determines that the first SCell is a cell requesting an SSB on demand, terminal 101 may send the second indication information to network device 102 via a second cell.

[0150] Exemplarily, the above-mentioned first RRC signaling is sent by the network device 102 to the terminal 101, that is, the network device 102 sends the first RRC signaling to the terminal 101. Accordingly, the terminal 101 receives the first RRC signaling sent by the network device 102. The at least one SCell included in the first RRC signaling may be an SCell that needs to be added and / or modified to the terminal 101. The terminal 101 receives the first RRC signaling sent by the network device 102, determines that the at least one SCell included in the first RRC signaling includes the first SCell, and the terminal 101 determines that the first SCell is a cell that requests SSB on demand. Then, the second indication information may be sent to the network device 102 through the second cell to instruct the network device 102 to send SSB in the first SCell. That is, the terminal 101 receives the first RRC signaling for adding and / or modifying the SCell, and the terminal 101 indicates to the network device 102 through the second indication information that it needs to request the "added and / or modified SCell" to send SSB. Before sending the second indication information, the terminal 101 first determines whether the "added and / or modified SCell" is a cell that requests SSB on demand, and illustratively, determines whether the "added and / or modified SCell" is sending SSB. If the terminal 101 determines that the "added and / or modified SCell" is not sending SSB when the "added and / or modified SCell" is a cell that requests SSB on demand, the terminal 101 indicates to the network device 102 through the second indication information that it needs to request the "added and / or modified SCell" to send SSB.

[0151] In some embodiments, the second indication information may be a second RRC signaling, which includes identifiers of one or more SCells and / or SSB request indications of the one or more SCells; wherein the one or more SCells are SCells among the at least one SCell; and the one or more SCells include the first SCell. The one or more SCells are cells that request SSBs on demand. The at least one SCell is the at least one SCell included in the first RRC signaling. That is, the second indication information may be an RRC signaling, which may directly carry the identifiers of the one or more SCells (such as SCellindex) and / or the SSB request indications of the one or more SCells to indicate that the network device 102 needs to request the SSB of the SCell associated with the SCellindex. In other words, the identifier of the SCell (such as SCellindex) and / or the SSB request indication carried in the RRC signaling may indicate that the network device 102 needs to send an SSB on the SCell associated with the SCellindex.

[0152] Exemplarily, the terminal 101 receives a first RRC signaling for adding and / or modifying an SCell sent by the network device 102, and the first RRC signaling includes at least one SCell, and the at least one SCell includes a first SCell, and the terminal 101 determines that the first SCell is a cell that requests SSB on demand (or NES SCell), then the terminal 101 can send a second RRC signaling to the network 102 through the second cell, and the second RRC signaling includes the SCellindex of the first SCell and / or the SSB request indication of the first SCell, to indicate that the network device 102 needs to request the SSB of the first SCell associated with the SCellindex, or to indicate that the network device 102 needs to send an SSB in the first SCell associated with the SCellindex. In some embodiments, the above-mentioned second RRC signaling can be a newly defined RRC signaling or a Dedicated SIB Request (dedicated SIB request).

[0153] In some embodiments, the second indication information may be a MAC-CE (Medium Access Control-Control elements); wherein the MAC-CE includes a first bitmap, the first bitmap being used to indicate whether a corresponding SCell is requested to send an SSB, the first bitmap comprising one or more first indication bits, the one or more first indication bits being used to indicate whether a corresponding SCell is requested to send an SSB (or for indicating a request for a network device to send an SSB in a corresponding SCell), the one or more first indication bits corresponding one-to-one to at least one SCell. The at least one SCell is the at least one SCell included in the first RRC signaling. It should be noted that the indication bits in a MAC-CE are typically greater than or equal to 8 bits. For example, taking the indication bits in a MAC-CE as 8 bits, even if five SCells are requested to send an SSB, the indication bits in the MAC-CE are one byte (8 bits), of which five indication bits are used to instruct the network device to send an SSB to the corresponding SCell among the five SCells. The extra indication bits in the 8 bits are designated as reserved.

[0154] Exemplarily, the second indication information sent by the terminal 101 to the network device 102 may be a MAC-CE. Exemplarily, the first RRC signaling includes M SCells, the MAC-CE may include a first bitmap, the first bitmap includes M first indication bits, each indication bit in the first bitmap corresponds to an SCell, and is used to indicate whether to request the network device to send an SSB in the corresponding SCell, and the M first indication bits correspond one-to-one to the M SCells. For example, the first RRC signaling includes three SCells (such as SCell 1, SCell 2, and SCell 3), and the second indication information sent by the terminal 101 to the network device 102 is MAC-CE. The MAC-CE may include a first bitmap, and the first bitmap includes three indication bits. The first indication bit corresponds to SCell 1, which is used to indicate whether the SCell 1 is requested to send SSB, the second indication bit corresponds to SCell 2, which is used to indicate whether the SCell 2 is requested to send SSB, and the third indication bit corresponds to SCell 3, which is used to indicate whether the SCell 3 is requested to send SSB. If the value of the indication bit in the first bitmap is 1, it means that the corresponding SCell needs to be requested to send SSB. If the value of the indication bit in the first bitmap is 0, it means that the corresponding SCell does not need to be requested to send SSB, or the value of the indication bit in the first bitmap can also be other values. This disclosure does not limit this and will not be repeated.

[0155] For example, the terminal 101 receives the first RRC signaling for adding and / or modifying the SCell sent by the network device 102. The first RRC signaling includes three SCells (such as SCell 1, SCell 2 and SCell 3), and the three SCells include the first SCell (such as SCell 2). The terminal 101 determines that the first SCell is a cell for requesting SSB on demand (or NES SCell), and the other SCell 1 and SCell 3 are not cells for requesting SSB on demand. Then the terminal 101 sends the second indication information to the network device 102 to indicate that the network device 102 needs to request to send SSB in the first SCell. The second indication information sent by the terminal 101 to the network device 102 is a MAC-CE, which may include a first bitmap. The first bitmap includes three indication bits, the value of the first indication bit is 0, indicating that it is not necessary to request the corresponding SCell 1 to send an SSB, the value of the second indication bit is 1, indicating that it is necessary to request the corresponding SCell 2 to send an SSB, and the value of the third indication bit is 0, indicating that it is not necessary to request the corresponding SCell 3 to send an SSB. In other words, the MAC-CE sent by the terminal 101 to the network device 102 includes indications associated with all SCells (i.e., all SCells included in the first RRC signaling), wherein the indication bit associated with a cell (or NES SCell) that does not request an SSB on demand in the MAC-CE indicates that the cell does not need to send an SSB, and the indication bit associated with a cell (or NES SCell) that does request an SSB on demand in the MAC-CE indicates whether the cell needs to send an SSB.

[0156] In some embodiments, the second indication information may be a MAC-CE, wherein the MAC-CE includes a second bitmap, the second bitmap being used to indicate whether to request one or more third cells to send an SSB, the second bitmap including one or more second indication bits, the one or more second indication bits being used to indicate whether to request the corresponding third cell to send an SSB, the one or more second indication bits corresponding one-to-one to one or more third cells, the one or more third cells being one or more cells in at least one SCell that request a synchronization signal block SSB on demand, the one or more third cells including the first SCell. The at least one SCell is the at least one SCell included in the first RRC signaling. The third cell is a cell for which a terminal requests an SSB on demand, and may be part or all of the cells in the at least one SCell included in the first RRC signaling.

[0157] Exemplarily, the first RRC signaling includes M SCells, and the terminal determines that N of the M SCells are cells that request SSBs on demand (i.e., the third cell). The second indication information sent by the terminal 101 to the network device 102 may be a MAC-CE, and the MAC-CE may include a second bitmap. The second bitmap includes N second indication bits, and each indication bit in the second bitmap corresponds to an SCell, which is used to indicate whether to request the network device to send an SSB in the corresponding SCell. Exemplarily, the indication bits in the second bitmap correspond one-to-one to the cells that request SSBs on demand (such as the third cell in this application). The indication bits in the second bitmap are used to indicate whether to request the network to send an SSB in the corresponding SCell. The terminal determines which SCell or cells in the cell that needs to request the SSB on demand, and the value of the corresponding indication bit is set to 1. For example, the terminal 101 receives the first RRC signaling sent by the network device 102, and the first RRC signaling includes three SCells (such as SCell 1, SCell 2 and SCell 3). SCell 1 and SCell 2 among the three SCells are cells that request SSB on demand (or NES SCell), and the three SCells include the first SCell (such as SCell 2). The terminal 101 determines that SCell 1 and SCell 2 are cells that request SSB on demand (or NES SCell). The second indication information sent by the terminal 101 to the network device 102 is MAC-CE, and the MAC-CE may include a second bitmap. The second bitmap includes two indication bits. The value of the first indication bit is 1, indicating that the corresponding SCell 1 needs to be requested to send SSB, and the value of the second indication bit is 1, indicating that the corresponding SCell 2 needs to be requested to send SSB. That is, the MAC-CE sent by the terminal 101 to the network device 102 includes an indication of association with the cell (or NES SCell) requesting SSB on demand, to indicate whether the corresponding SCell needs to send SSB.

[0158] Scenario 2: SCell Activation

[0159] In some embodiments, terminal 101 receives an SCell activation / deactivation MAC CE sent by network device 102, where the SCell activation / deactivation MAC CE includes an activation / deactivation indication bit for each SCell in at least one SCell. If the at least one SCell includes a first SCell and the first SCell is an activated SCell, terminal 101 sends the second indication information to network device 102 via a second cell to instruct the network device to send an SSB in the first SCell. The at least one SCell is the at least one SCell included in the first RRC signaling.

[0160] Exemplarily, the SCell activation / deactivation MAC CE may be sent by the network device 102 to the terminal 101, that is, the network device 102 sends the SCell activation / deactivation MAC CE to the terminal 101, and accordingly, the terminal 101 receives the SCell activation / deactivation MAC CE sent by the network device 102. The terminal 101 receives the SCell activation / deactivation MAC CE sent by the network device 102, and the SCell activation / deactivation MAC CE indicates activation of the SCell associated with SCellindexi, and the SCell associated with SCellindexi is included in at least one SCell included in the above-mentioned first RRC signaling, and the SCell associated with SCellindexi includes the first SCell, then the terminal 101 sends the second indication information to the network device 102 through the second cell to indicate that the network device requires the first SCell to send the SSB.

[0161] For example, the terminal 101 receives an SCell activation / deactivation MAC CE sent by the network device 102. The SCell activation / deactivation MAC CE includes three SCells (such as SCell 1, SCell 2 and SCell 3), and the three SCells include the first SCell (such as SCell 2). The terminal 101 determines that the first SCell (such as SCell 2) is a cell (or NES SCell) that requests SSB on demand, and the other SCell 1 and SCell 3 are not cells that request SSB on demand. Then the terminal 101 sends a second indication information to the network device 102 to indicate that the network device 102 needs to request to send SSB in the first SCell (such as SCell 2). The second indication information may be RRC signaling, which includes the SCellindex of the first SCell (such as SCell 2) and / or the SSB request indication of the first SCell (such as SCell 2), to indicate that the network device 102 needs to request the SSB of the first SCell (such as SCell 2) associated with the SCellindex. Alternatively, the second indication information may be a MAC CE, which is a bitmap, which includes 3 indication bits, the value of the first indication bit is 0, indicating that it is not necessary to request the corresponding SCell 1 to send SSB, the value of the second indication bit is 1, indicating that it is necessary to request the corresponding SCell 2 to send SSB, and the value of the third indication bit is 0, indicating that it is not necessary to request the corresponding SCell 3 to send SSB. Alternatively, the second indication information may be a MAC CE, which is a bitmap, which includes 1 indication bit, the value of the indication bit is 1, indicating that it is necessary to request the corresponding SCell 2 to send SSB.

[0162] Scenario 3: SCell Time-Frequency Synchronization

[0163] In some embodiments, if the terminal 101 determines that it needs to synchronize time and frequency with the first SCell, it may send second indication information to the network device 102 through the second cell. For example, if the terminal 101 needs to synchronize time and frequency with the first SCell, and the terminal 101 determines that the first SCell is a cell that requests SSB on demand, the terminal 101 may send the second indication information to the network device 102 through the second cell to instruct the network device 102 to send SSB in the first SCell. In other words, when the terminal 101 needs to synchronize time and frequency with the SCell, the terminal 101 may send the second indication information to the network device 102 through the second cell to instruct the network device 102 to request the SCell that needs time and frequency synchronization to send SSB.

[0164] Scenario 4: SCell Measurement

[0165] In some embodiments, the terminal 101 determines that it is necessary to perform layer 1 / layer 3 measurement on the first SCell, and then sends second indication information to the network device 102 through the second cell. Exemplarily, the terminal 101 needs to perform layer 1 / layer 3 measurement on the first SCell, and the terminal 101 determines that the first SCell is a cell that requests SSB on demand. The terminal 101 may send the above-mentioned second indication information to the network device 102 through the second cell to instruct the network device 102 to send SSB on the first SCell. In other words, the terminal 101 needs to perform layer 1 / layer 3 measurement on the SCell, and the measurement of the deactivated SCell is based on the long cycle configured by the network device 102. When / before the measurement opportunity arrives, the terminal 101 may send the second indication information to the network device 102 through the second cell to instruct the network device 102 to request the SCell that requires layer 1 / layer 3 measurement to send SSB.

[0166] Optionally, in some embodiments, before the terminal 101 sends the above-mentioned second indication information, the method may further include step S2103, namely: the terminal 101 may first detect whether the first SCell is sending SSB (or the terminal 101 may first detect whether the network device 102 is sending the SSB of the first SCell, wherein the network device 102 sending the SSB of the first SCell may refer to the network device 102 sending the SSB in the first SCell). Optionally, in some embodiments, if the terminal 101 detects that the first SCell is sending SSB (such as sending SSB), or detects that the network device 102 is sending the SSB of the first SCell, the terminal 101 may not send the second indication information. Exemplarily, before the terminal 101 is ready to send the above-mentioned second indication information, if the terminal 101 detects that the first SCell is sending SSB, the terminal avoids sending the second indication information. For example, before the terminal 101 is ready to send the above-mentioned second indication information, other terminals request the network device 102 to send the SSB to the first SCell, so that the terminal 101 can detect the SSB sent by the first SCell, and the terminal 101 can avoid sending the second indication information.

[0167] Optionally, in some embodiments, if the terminal 101 cannot detect the SSB of the first SCell, it can be considered that the first SCell is not requested to send the SSB, and the terminal 101 needs to send the second indication information. Exemplarily, before the terminal 101 is ready to send the above-mentioned second indication information, if the terminal 101 cannot detect the SSB of the first SCell, the terminal 101 needs to send the second indication information to the network device 102 through the second cell to instruct the network device 102 to send the SSB in the first SCell.

[0168] In one possible implementation, the terminal 101 detects whether the first SCell is sending an SSB by determining whether the SSB of the first SCell is detected at the SSB reception moment of the first SCell (or the terminal 101 may first detect whether the network device 102 is sending the SSB of the first SCell). Exemplarily, if the terminal 101 detects the SSB of the first SCell at the SSB reception moment of the first SCell, it is considered that the terminal 101 has detected that the first SCell is sending an SSB. Exemplarily, if the terminal 101 does not detect the SSB of the first SCell at the SSB reception moment of the first SCell, it is considered that the terminal 101 cannot detect the SSB of the first SCell.

[0169] Optionally, in some embodiments, the method may further include step S2104, namely: the network device 102 sends an SSB in the first SCell. Exemplarily, the network device 102 sends the SSB in the first SCell, and accordingly, the terminal 101 receives the SSB sent by the network device 102 in the first SCell.

[0170] In an embodiment of the present disclosure, terminal 101 sends the second indication information to network device 102 via the second cell, instructing network device 102 to send an SSB in the first SCell. Network device 102 receives the second indication information and sends an SSB in the first SCell, allowing terminal 101 to receive the SSB of the first SCell. The SSB of the first SCell can be used by terminal 101 to achieve synchronization in the first SCell. Exemplarily, network device 102 sends the SSB to terminal 101 in the first SCell to facilitate cell search and identification by terminal 101.

[0171] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0172] 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.

[0173] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0174] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0175] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "some", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "some 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, some A, any A, or first A, etc., but not limited to this.

[0176] 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.

[0177] The method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2104. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, step S2101 + step S2102 can be implemented as an independent embodiment, step S2102 + step S2103 can be implemented as an independent embodiment, step S2101 + step S2102 + step S2103 can be implemented as an independent embodiment, step S2102 + step S2103 + step S2104 can be implemented as an independent embodiment, step S2101 + step S2102 + step S2104 can be implemented as an independent embodiment, step S2101 + step S2102 + step S2103 + step S2104 can be implemented as an independent embodiment, step S2102 + step S2104 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0178] In some embodiments, steps S2102 to S2104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0179] In some embodiments, step S2101, step S2103, and step S2104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0180] In some embodiments, step S2103 and step S2104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0181] In some embodiments, step S2101 and step S2104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0182] In some embodiments, step S2101 and step S2103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0183] In some embodiments, step S2104 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0184] In some embodiments, step S2101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0185] In some embodiments, step S2103 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0186] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2A .

[0187] Figure 2B is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2B, the communication method according to the embodiment of the present disclosure can be applied to a communication system 100, and the method includes but is not limited to the following steps.

[0188] Step S2201: Terminal 101 determines, based on terminal 101 implementation, that the first SCell is a cell that requests SSB on demand.

[0189] The optional implementation of step S2201 can refer to the optional implementation of step S2101 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0190] In step S2202, the terminal 101 sends first information to the network device 102 on the first SCell, where the first information is used to instruct the network device 102 to send an SSB on the first SCell.

[0191] In some embodiments, if the terminal 101 determines that the first SCell is a cell that requests SSB on demand, the terminal 101 may request the first SCell to send SSB through the first information. Exemplarily, the terminal 101 sends the first information to the network device 102 to instruct the network device 102 to send SSB in the first SCell.

[0192] In some embodiments, the first information may be sent on the first SCell by the terminal 101. Exemplarily, the first information may be sent by the terminal 101 on the first SCell to the network device 102, that is, the terminal 101 sends the first information to the network device 102 on the first SCell, and correspondingly, the network device 102 receives the first information sent by the terminal 101 on the first SCell.

[0193] In some embodiments, the terminal 101 may obtain the configuration of the first information associated with the first SCell from an SIB (System Information Block) or dedicated RRC signaling. Exemplarily, the terminal 101 may send the first information to the network device based on the configuration of the first information associated with the first SCell. For example, the terminal 101 may send the first information to the network device 102 on the first SCell based on the configuration of the first information associated with the first SCell to instruct the network device 102 to send an SSB on the first SCell. Exemplarily, the above-mentioned SIB or dedicated RRC signaling may be sent by other cells that have a carrier aggregation relationship with the first SCell, such as a primary cell or other secondary cells. Exemplarily, the above-mentioned SIB or dedicated RRC signaling can be sent by the network device 102 to the terminal 101. For example, the network device 102 sends the SIB or dedicated RRC signaling on other cells that have a carrier aggregation relationship with the first SCell. Accordingly, the terminal 101 receives the SIB or dedicated RRC signaling sent by the network device 102, so that the terminal 101 obtains the configuration of the first information associated with the first SCell from the SIB or dedicated RRC signaling.

[0194] In some embodiments, the first information may be a WUS signal, and the WUS signal may be a preamble (preamble code) sent. Exemplarily, the preamble may be a preamble reserved by the system, and the sending of the preamble indicates a request for SSB.

[0195] In some embodiments, the configuration of the first information associated with the first SCell may include but is not limited to at least one of the following: the initial transmission power of the first information, or a parameter used to calculate the initial transmission power; the power climbing step of the first information; the maximum number of transmissions of the first information; the preamble code index or sequence reserved for the first information; the configuration information of the random access opportunity RO resource, the RO resource is used to send the first information; the configuration of the timer, the timer is used to indicate the length of time that the terminal 101 listens to the SSB sent by the first SCell, and the timer is used for the terminal 101 to determine whether the first information needs to be resent.

[0196] Exemplarily, the initial transmit power of the first information may refer to the transmit power used when the terminal 101 first transmits the first information. The power ramp-up step size of the first information may refer to the power ramp-up step size used each time the first information is transmitted. Exemplarily, if the terminal 101 determines that the first SCell is a cell that requests an SSB on demand, the terminal 101 may use the initial transmit power to transmit the first information to the network device 102 for the first time. After the terminal 101 sends the first information, it starts the timer and listens to the SSB sent by the first SCell during the timer running. If the SSB sent by the first SCell is not received (or not detected or not listened to) during the timer running, the timer expires, and the terminal 101 continues to increase the power with the above-mentioned power climbing step, and uses the increased power to send the first information to the network device 102 until at least one of the following conditions is met, and the sending of the first information is stopped, where the condition may include but is not limited to: receiving the SSB sent by the first SCell during the timer running; the increased power reaches the maximum uplink transmit power of the terminal 101; the increased power reaches the maximum uplink transmit power allowed by the first SCell; the number of times the first information is sent reaches the maximum number of times the first information is sent.

[0197] It is worth noting that in some embodiments, the above-mentioned first SCell (cell requesting SSB on demand or NES SCell) can be one or more, that is, the configuration of the above-mentioned first information can be configured according to the NES SCell granularity (perNES SCell), that is, each NES SCell has its own associated first information configuration. The terminal 101 can request one or more first SCells to send SSB. The configuration of the first information associated with one or more first SCells can be the same or different. Exemplarily, the one or more first SCells can be associated with different first information configurations. Exemplarily, the one or more first SCells can be associated with the same first information configuration. For example, there are multiple first SCells, and the multiple first SCells can be associated with different first information configurations, that is, each first SCell has an associated first information configuration, such as each first SCell has an associated preamble index or sequence and / or random access opportunity RO resource configuration information, and the preamble is used to request the first SCell to send SSB. Alternatively, the multiple first SCells can be associated with the same first information configuration, that is, the multiple first SCells share a set of first information configurations.

[0198] In some embodiments, the terminal 101 may obtain the configuration of the first SCell from the SIB or dedicated RRC signaling. Exemplarily, the terminal 101 may send first information to the network device based on the configuration of the first SCell and / or the configuration of the first information associated with the first SCell to instruct the network device 102 to send the SSB in the first SCell. Exemplarily, the above-mentioned SIB or dedicated RRC signaling may be sent by other cells that have a carrier aggregation relationship with the first SCell. In some embodiments, the configuration of the above-mentioned first SCell may include but is not limited to at least one of the following: the identifier and / or frequency of the first SCell; the random access channel RACH related configuration of the first SCell; the configuration of the first information associated with the first SCell; the information in the SIB1 of the first SCell.

[0199] Optionally, in some embodiments, the terminal 101 receives a random access response MAC PDU (MAC protocol data unit) including a header of a RAPID (Random Access Preamble identifier) ​​of a preamble index or sequence, and determines that the network device 102 has confirmed the SSB request for the first SCell. Exemplarily, the MAC layer of the terminal 101 receives a MAC PDU including a header of a RAPID of a preamble index or sequence, and notifies the upper layer of the terminal 101 that an SSB request confirmation has been received. The SSB request confirmation can be understood as the network device 101 confirming the SSB request for the first SCell, or in other words, notifying the upper layer of the terminal 101 that the network device has confirmed the SSB request for the first SCell. For example, the MAC layer of the terminal 101 receives a MAC PDU including a header of a RAPID of a preamble index or sequence, and sends a notification to the upper layer of the terminal 101 to inform the network device that the SSB request for the first SCell has been confirmed. Exemplarily, the random access response MAC PDU may be sent by the network device 102 to the terminal 101. For example, the network device 102 sends a random access response MAC PDU to the terminal 101. Accordingly, the terminal 102 receives the random access response MAC PDU sent by the network device 102. The random access response MAC PDU includes a header of a random access preamble identifier RAPID of a preamble index or sequence. Exemplarily, after the terminal 101 sends the first information and receives the header of the RAPID of the preamble index or sequence transmitted by itself, it may be considered that the random access is successfully completed, and the upper layer of the terminal 101 may be notified that the SSB request confirmation has been received.

[0200] Optionally, in some embodiments, before the terminal 101 sends the above-mentioned first information, the method may further include step S2203, namely: the terminal 101 may first detect whether the first SCell is sending SSB (or the terminal 101 may first detect whether the network device 102 is sending the SSB of the first SCell, wherein the network device 102 sending the SSB of the first SCell may refer to the network device 102 sending the SSB in the first SCell). Optionally, in some embodiments, if the terminal 101 detects that the first SCell is sending SSB (such as sending SSB), or detects that the network device 102 is sending the SSB of the first SCell, the terminal 101 may not send the first information. Exemplarily, before the terminal 101 is ready to send the above-mentioned first information, if the terminal 101 detects that the first SCell is sending SSB, the terminal avoids sending the first information. For example, before terminal 101 is ready to send the above-mentioned first information, other terminals request the network device 102 to send SSB from the first SCell, so that terminal 101 can detect the SSB sent by the first SCell, and terminal 101 can avoid sending the first information.

[0201] Optionally, in some embodiments, if the terminal 101 cannot detect the SSB of the first SCell, it can be considered that the first SCell is not requested to send the SSB, and the terminal 101 needs to send the first information. Exemplarily, before the terminal 101 is ready to send the above-mentioned first information, if the terminal 101 cannot detect the SSB of the first SCell, the terminal 101 needs to send the first information to the network device 102 on the first SCell to instruct the network device 102 to send the SSB on the first SCell.

[0202] In one possible implementation, the terminal 101 detects whether the first SCell is sending an SSB by determining whether the SSB of the first SCell is detected at the SSB reception moment of the first SCell (or the terminal 101 may first detect whether the network device 102 is sending the SSB of the first SCell). Exemplarily, if the terminal 101 detects the SSB of the first SCell at the SSB reception moment of the first SCell, it is considered that the terminal 101 has detected that the first SCell is sending an SSB. Exemplarily, if the terminal 101 does not detect the SSB of the first SCell at the SSB reception moment of the first SCell, it is considered that the terminal 101 cannot detect the SSB of the first SCell.

[0203] Optionally, in some embodiments, the method may further include step S2204, namely: the network device 102 sends an SSB in the first SCell. Exemplarily, the network device 102 sends the SSB in the first SCell, and accordingly, the terminal 101 receives the SSB sent by the network device 102 in the first SCell.

[0204] In an embodiment of the present disclosure, terminal 101 sends the first information in the first SCell to network device 102 to instruct network device 102 to send an SSB in the first SCell. Network device 102 receives the first information and sends an SSB in the first SCell, so that terminal 101 can receive the SSB of the first SCell. The SSB of the first SCell can be used by terminal 101 to achieve synchronization or measurement in the first SCell.

[0205] The method involved in the embodiments of the present disclosure may include at least one of steps S2201 to S2204. For example, step S2201 can be implemented as an independent embodiment, step S2202 can be implemented as an independent embodiment, step S2201 + step S2202 can be implemented as an independent embodiment, step S2202 + step S2203 can be implemented as an independent embodiment, step S2201 + step S2202 + step S2203 can be implemented as an independent embodiment, step S2202 + step S2203 + step S2204 can be implemented as an independent embodiment, step S2201 + step S2202 + step S2204 can be implemented as an independent embodiment, step S2201 + step S2202 + step S2203 + step S2204 can be implemented as an independent embodiment, step S2202 + step S2204 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0206] In some embodiments, steps S2202 to S2204 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0207] In some embodiments, step S2201, step S2203, and step S2204 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0208] In some embodiments, step S2203 and step S2204 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0209] In some embodiments, step S2201 and step S2204 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0210] In some embodiments, step S2201 and step S2203 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0211] In some embodiments, step S2204 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0212] In some embodiments, step S2201 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0213] In some embodiments, step S2203 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0214] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2B .

[0215] Figure 2C is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2C, the communication method according to an embodiment of the present disclosure can be applied to a communication system 100, and the method includes but is not limited to the following steps.

[0216] Step S2301: The network device 102 sends first indication information.

[0217] In some embodiments, the first indication information may be sent by the network device 102 to the terminal 101. Exemplarily, the network device 102 sends the first indication information to the terminal 101, and accordingly, the terminal 101 receives the first indication information. Exemplarily, the terminal 101 receives the first indication information sent by the network device 102.

[0218] In some embodiments, the first indication information is used to indicate whether the first SCell is a cell requesting SSB on demand. Exemplarily, the first indication information is used by the terminal 101 to determine whether the first SCell is a cell requesting SSB on demand. Exemplarily, the network device 102 may indicate, through the first indication information, whether the SCell (such as the first SCell) is a cell requesting SSB on demand. Upon receiving the first indication information, the terminal 101 may determine, based on the first indication information, whether the first SCell is a cell requesting SSB on demand.

[0219] In some embodiments, the above-mentioned first indication information may be a newly defined IE (Information Element), which may be carried in one of the following information elements: ServingCellConfigCommon (serving cell common configuration); ServingCellConfig (serving cell configuration); ScellConfig (secondary cell configuration). Exemplarily, the first indication information in the Scell ​​addition RRC signaling indicates whether the Scell ​​is a normal secondary cell (normal SCell) or an on-demand required SSB SCell (a cell requesting SSB on demand, or it may have other names, which are not specifically limited in this disclosure), that is, it is used to indicate whether the Scell ​​is a Scell ​​that sends SSB based on a request. For example, a new IE is defined in ServingCellConfigCommon to indicate whether the Scell ​​is a cell requesting SSB on demand. Alternatively, a new IE is defined in ServingCellConfig to indicate whether the Scell ​​is a cell requesting SSB on demand. Alternatively, a new IE is defined in ScellConfig to indicate whether the Scell ​​is a cell requesting SSB on demand. Alternatively, a new IE is defined in ScellConfig to indicate whether the Scell ​​is a cell requesting SSB on demand. Exemplarily, the name of the first indication information may be SSBstate (or other names, which are not specifically limited in this disclosure), and the value of the SSBstate is required, which indicates that the corresponding Scell ​​is an Scell ​​that requests SSB on demand. It should be noted that the above "required" is only an example of the value of the first indication information, and it can be implemented in other forms, which is not specifically limited in this disclosure.

[0220] In step S2302, the terminal 101 determines, based on the first indication information, that the first SCell is a cell that requests SSB on demand.

[0221] In some embodiments, the terminal 101 receives the first indication information sent by the network device 102, and can determine whether the first SCell is a cell that requests SSB on demand based on the first indication information. Exemplarily, the value of the first indication information is a first value, indicating that the first SCell is a cell that requests SSB on demand, and the value of the first indication information is a second value, indicating that the first SCell is a normal cell (such as a cell that is not requesting SSB on demand). The terminal 101 receives the first indication information sent by the network device 102. If the value of the first indication information is the first value, it can be determined that the first SCell is a cell that requests SSB on demand; if the value of the first indication information is the second value, it can be determined that the first SCell is a normal cell (such as a cell that is not requesting SSB on demand). That is, the network device 102 can indicate whether the SCell (such as the first SCell) is a cell that requests SSB on demand through the first indication information.

[0222] In step S2303, the terminal 101 sends second indication information to the network device 102 through the second cell. The second indication information is used to instruct the network device 102 to send SSB in the first SCell.

[0223] In some embodiments, the second cell and the first SCell are carrier aggregated.

[0224] In some embodiments, the second indication information may be sent by the terminal 101. For example, the second indication information may be sent by the terminal 101 to the network device 102, that is, the terminal 101 sends the second indication information to the network device 102, and accordingly, the network device 102 receives the second indication information sent by the terminal 101.

[0225] In some embodiments, the second indication information may be sent by the terminal 101 via the second cell. Exemplarily, the second indication information may be sent by the terminal 101 to the network device 102 via the second cell, i.e., the terminal 101 sends the second indication information to the network device 102 via the second cell, and accordingly, the network device 102 receives the second indication information sent by the terminal 101 via the second cell. Exemplarily, the terminal 101 sending the second indication information via the second cell may mean that the terminal 101 sends the second indication information using a UL grant (uplink grant) configured by the second cell for the terminal 101.

[0226] The optional implementation of step S2303 can refer to the optional implementation of step S2102 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0227] Optionally, in some embodiments, before the terminal 101 sends the above-mentioned second indication information, the method may further include step S2304, that is, the terminal 101 may first detect whether the first SCell is sending an SSB (or the terminal 101 may first detect whether the network device 102 is sending the SSB of the first SCell, wherein the network device 102 sending the SSB of the first SCell may refer to the network device 102 sending the SSB in the first SCell). The optional implementation of step S2304 can refer to the optional implementation of step S2103 in Figure 2A and other related parts of the embodiment involved in Figure 2A, and will not be repeated here.

[0228] Optionally, in some embodiments, the method may further include step S2305, namely: network device 102 transmits an SSB in the first SCell. Exemplarily, network device 102 transmits the SSB in the first SCell, and accordingly, terminal 101 receives the SSB transmitted by network device 102 in the first SCell. For optional implementations, see the optional implementation of step S2104 in FIG. 2A and other related portions of the embodiments involved in FIG. 2A , which will not be further described here.

[0229] The method involved in the embodiments of the present disclosure may include at least one of steps S2301 to S2305. For example, step S2301 + step S2302 can be implemented as an independent embodiment, step S2303 can be implemented as an independent embodiment, step S2301 + step S2302 + step S2303 can be implemented as an independent embodiment, step S2303 + step S2304 can be implemented as an independent embodiment, step S2303 + step S2304 + step S2305 can be implemented as an independent embodiment, step S2303 + step S2305 can be implemented as an independent embodiment, step S2301 + step S2302 + step S2303 + step S2305 can be implemented as an independent embodiment, and step S2301 + step S2302 + step S2303 + step S2304 + step S2305 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0230] In some embodiments, steps S2303 to S2305 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0231] In some embodiments, step S2301, step S2302, step S2304, and step S2305 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0232] In some embodiments, step S2304 and step S2305 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0233] In some embodiments, step S2301, step S2302, and step S2305 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0234] In some embodiments, step S2301 and step S2302 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0235] In some embodiments, step S2301, step S2302, and step S2304 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0236] In some embodiments, step S2304 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0237] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2C .

[0238] Figure 2D is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2D, the communication method according to the embodiment of the present disclosure can be applied to the communication system 100, and the method includes but is not limited to the following steps.

[0239] Step S2401: The network device 102 sends first indication information.

[0240] In some embodiments, the first indication information may be sent by the network device 102 to the terminal 101. Exemplarily, the network device 102 sends the first indication information to the terminal 101, and accordingly, the terminal 101 receives the first indication information. Exemplarily, the terminal 101 receives the first indication information sent by the network device 102.

[0241] In some embodiments, the first indication information is used to indicate whether the first SCell is a cell requesting an SSB on demand. Exemplarily, the first indication information is used by the terminal 101 to determine whether the first SCell is a cell requesting an SSB on demand.

[0242] The optional implementation of step S2401 can refer to the optional implementation of step S2301 in Figure 2C and other related parts in the embodiment involved in Figure 2C, which will not be repeated here.

[0243] In step S2402, the terminal 101 determines, based on the first indication information, that the first SCell is a cell that requests SSB on demand.

[0244] The optional implementation of step S2402 can refer to the optional implementation of step S2302 in Figure 2C and other related parts in the embodiment involved in Figure 2C, which will not be repeated here.

[0245] Step S2403: The terminal 101 sends first information to the network device 102 on the first SCell, where the first information is used to instruct the network device 102 to send SSB on the first SCell.

[0246] In some embodiments, the first information may be sent on the first SCell by the terminal 101. Exemplarily, the first information may be sent by the terminal 101 on the first SCell to the network device 102, that is, the terminal 101 sends the first information to the network device 102 on the first SCell, and correspondingly, the network device 102 receives the first information sent by the terminal 101 on the first SCell.

[0247] The optional implementation of step S2403 can refer to the optional implementation of step S2202 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0248] Optionally, in some embodiments, before the terminal 101 sends the above-mentioned first information, the method may further include step S2404, that is, the terminal 101 may first detect whether the first SCell is sending an SSB (or the terminal 101 may first detect whether the network device 102 is sending the SSB of the first SCell, wherein the network device 102 sending the SSB of the first SCell may refer to the network device 102 sending the SSB in the first SCell). The optional implementation of step S2404 can refer to the optional implementation of step S2203 in Figure 2B and other related parts of the embodiment involved in Figure 2B, and will not be repeated here.

[0249] Optionally, in some embodiments, the method may further include step S2405, namely: network device 102 transmits an SSB in the first SCell. Exemplarily, network device 102 transmits the SSB in the first SCell, and accordingly, terminal 101 receives the SSB transmitted by network device 102 in the first SCell. For optional implementations, see the optional implementation of step S2204 in FIG. 2B and other related portions of the embodiments involved in FIG. 2B , which will not be further described here.

[0250] The method involved in the embodiments of the present disclosure may include at least one of steps S2401 to S2405. For example, step S2401 + step S2402 can be implemented as an independent embodiment, step S2403 can be implemented as an independent embodiment, step S2401 + step S2402 + step S2403 can be implemented as an independent embodiment, step S2403 + step S2404 can be implemented as an independent embodiment, step S2403 + step S2404 + step S2405 can be implemented as an independent embodiment, step S2403 + step S2405 can be implemented as an independent embodiment, step S2401 + step S2402 + step S2403 + step S2405 can be implemented as an independent embodiment, and step S2401 + step S2402 + step S2403 + step S2404 + step S2405 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0251] In some embodiments, steps S2403 to S2405 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0252] In some embodiments, step S2401, step S2402, step S2404, and step S2405 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0253] In some embodiments, step S2404 and step S2405 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0254] In some embodiments, step S2401, step S2402, and step S2405 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0255] In some embodiments, step S2401 and step S2402 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0256] In some embodiments, step S2401, step S2402, and step S2404 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0257] In some embodiments, step S2404 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0258] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2D .

[0259] FIG3A is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a communication method, which can be executed by terminal 101 and may include but is not limited to the following steps.

[0260] Step S3101: Determine, based on the terminal 101, that the first SCell is a cell that requests SSB on demand.

[0261] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0262] Step S3102, detect whether the first SCell is sending SSB (or detect whether the network device 102 is sending the SSB of the first SCell, where the network device 102 sending the SSB of the first SCell may mean that the network device 102 sends the SSB in the first SCell).

[0263] The optional implementation of step S3102 can refer to the optional implementation of step S2103 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0264] Step S3103: Send second indication information to the network device 102 through the second cell, where the second indication information is used to instruct the network device 102 to send SSB in the first SCell.

[0265] In some embodiments, the second indication information may be sent by the terminal 101. For example, the second indication information may be sent by the terminal 101 to the network device 102, that is, the terminal 101 sends the second indication information to the network device 102, and accordingly, the network device 102 receives the second indication information sent by the terminal 101.

[0266] In some embodiments, the second indication information may be sent by the terminal 101 through the second cell. Exemplarily, the second indication information may be sent by the terminal 101 to the network device 102 through the second cell, that is, the terminal 101 sends the second indication information to the network device 102 through the second cell, and accordingly, the network device 102 receives the second indication information sent by the terminal 101 through the second cell.

[0267] The optional implementation of step S3103 can refer to the optional implementation of step S2102 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0268] Step S3104: Receive the SSB sent by the network device 102 in the first SCell.

[0269] Exemplarily, the network device 102 sends the SSB in the first SCell, and accordingly, the terminal 101 receives the SSB sent by the network device 102 in the first SCell.

[0270] The optional implementation of step S3104 can refer to the optional implementation of step S2104 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0271] The method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3104. For example, step S3101 can be implemented as an independent embodiment, step S3103 can be implemented as an independent embodiment, step S3101 + step S3103 can be implemented as an independent embodiment, step S3102 + step S3103 can be implemented as an independent embodiment, step S3101 + step S3102 + step S3103 can be implemented as an independent embodiment, step S3102 + step S3103 + step S3104 can be implemented as an independent embodiment, step S3101 + step S3103 + step S3104 can be implemented as an independent embodiment, step S3101 + step S3102 + step S3103 + step S3104 can be implemented as an independent embodiment, step S3101 + step S3102 + step S3103 + step S3104 can be implemented as an independent embodiment, and step S3103 + step S3104 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0272] In some embodiments, steps S3102 to S3104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0273] In some embodiments, step S3101, step S3102, and step S3104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0274] In some embodiments, step S3102 and step S3104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0275] In some embodiments, step S3101 and step S3104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0276] In some embodiments, step S3101 and step S3102 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0277] In some embodiments, step S3104 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0278] In some embodiments, step S3101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0279] In some embodiments, step S3102 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0280] FIG3B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to a communication method, which can be executed by terminal 101 and may include but is not limited to the following steps.

[0281] Step S3201: Determine, based on the terminal 101, that the first SCell is a cell that requests SSB on demand.

[0282] The optional implementation of step S3201 can refer to the optional implementation of step S2101 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0283] Step S3202, detect whether the first SCell is sending SSB (or detect whether the network device 102 is sending the SSB of the first SCell, where the network device 102 sending the SSB of the first SCell may mean that the network device 102 sends the SSB in the first SCell).

[0284] The optional implementation of step S3202 can refer to the optional implementation of step S2203 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0285] Step S3203: Send first information to the network device 102 on the first SCell, where the first information is used to instruct the network device 102 to send the SSB on the first SCell.

[0286] The optional implementation of step S3202 can refer to the optional implementation of step S2202 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0287] Step S3204: Receive the SSB sent by the network device 102 in the first SCell.

[0288] Exemplarily, the network device 102 sends the SSB in the first SCell, and accordingly, the terminal 101 receives the SSB sent by the network device 102 in the first SCell.

[0289] The optional implementation of step S3203 can refer to the optional implementation of step S2204 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0290] The method involved in the embodiments of the present disclosure may include at least one of steps S3201 to S3204. For example, step S3201 can be implemented as an independent embodiment, step S3203 can be implemented as an independent embodiment, step S3201 + step S3203 can be implemented as an independent embodiment, step S3202 + step S3203 can be implemented as an independent embodiment, step S3201 + step S3202 + step S3203 can be implemented as an independent embodiment, step S3202 + step S3203 + step S3204 can be implemented as an independent embodiment, step S3201 + step S3203 + step S3204 can be implemented as an independent embodiment, step S3201 + step S3202 + step S3203 + step S3204 can be implemented as an independent embodiment, step S3201 + step S3202 + step S3203 + step S3204 can be implemented as an independent embodiment, and step S3203 + step S3204 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0291] In some embodiments, steps S3202 to S3204 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0292] In some embodiments, step S3201, step S3202, and step S3204 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0293] In some embodiments, step S3202 and step S3204 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0294] In some embodiments, step S3201 and step S3204 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0295] In some embodiments, step S3201 and step S3202 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0296] In some embodiments, step S3204 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0297] In some embodiments, step S3201 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0298] In some embodiments, step S3202 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0299] FIG3C is a flow chart showing a communication method according to an embodiment of the present disclosure. As shown in FIG3C , the embodiment of the present disclosure relates to a communication method, which can be executed by terminal 101 and may include but is not limited to the following steps.

[0300] Step S3301: Receive first indication information.

[0301] In some embodiments, the first indication information may be sent by the network device 102 to the terminal 101. Exemplarily, the network device 102 sends the first indication information to the terminal 101, and accordingly, the terminal 101 receives the first indication information. Exemplarily, the terminal 101 receives the first indication information sent by the network device 102.

[0302] In some embodiments, the first indication information is used to indicate whether the first SCell is a cell requesting an SSB on demand. Exemplarily, the first indication information is used by the terminal 101 to determine whether the first SCell is a cell requesting an SSB on demand.

[0303] The optional implementation of step S3301 can refer to the optional implementation of step S2301 in Figure 2C and other related parts in the embodiment involved in Figure 2C, which will not be repeated here.

[0304] Step S3302: Based on the first indication information, determine that the first SCell is a cell that requests SSB on demand.

[0305] The optional implementation of step S3302 can refer to the optional implementation of step S2302 in Figure 2C and other related parts in the embodiment involved in Figure 2C, which will not be repeated here.

[0306] Step S3303, detect whether the first SCell is sending SSB (or detect whether the network device 102 is sending the SSB of the first SCell, where the network device 102 sending the SSB of the first SCell may mean that the network device 102 sends the SSB in the first SCell).

[0307] The optional implementation of step S3303 can refer to the optional implementation of step S2304 in Figure 2C and other related parts in the embodiment involved in Figure 2C, which will not be repeated here.

[0308] Step S3304: Send second indication information to the network device 102 through the second cell, where the second indication information is used to instruct the network device 102 to send the SSB in the first SCell.

[0309] In some embodiments, the second cell and the first SCell are carrier aggregated.

[0310] In some embodiments, the second indication information may be sent by the terminal 101. For example, the second indication information may be sent by the terminal 101 to the network device 102, that is, the terminal 101 sends the second indication information to the network device 102, and accordingly, the network device 102 receives the second indication information sent by the terminal 101.

[0311] In some embodiments, the second indication information may be sent by the terminal 101 via the second cell. Exemplarily, the second indication information may be sent by the terminal 101 to the network device 102 via the second cell, i.e., the terminal 101 sends the second indication information to the network device 102 via the second cell, and accordingly, the network device 102 receives the second indication information sent by the terminal 101 via the second cell. Exemplarily, the terminal 101 sending the second indication information via the second cell may mean that the terminal 101 sends the second indication information using a UL grant (uplink grant) configured by the second cell for the terminal 101.

[0312] The optional implementation of step S3304 can refer to the optional implementation of step S2303 in Figure 2C and other related parts in the embodiment involved in Figure 2C, which will not be repeated here.

[0313] Step S3305: Receive the SSB sent by the network device 102 in the first SCell.

[0314] Exemplarily, the network device 102 sends the SSB in the first SCell, and accordingly, the terminal 101 receives the SSB sent by the network device 102 in the first SCell.

[0315] The optional implementation of step S3305 can refer to the optional implementation of step S2305 in Figure 2C and other related parts in the embodiment involved in Figure 2C, which will not be repeated here.

[0316] The method involved in the embodiments of the present disclosure may include at least one of steps S3301 to S3305. For example, step S3301 + step S3302 can be implemented as an independent embodiment, step S3304 can be implemented as an independent embodiment, step S3301 + step S3302 + step S3304 can be implemented as an independent embodiment, step S3303 + step S3304 can be implemented as an independent embodiment, step S3303 + step S3304 + step S3305 can be implemented as an independent embodiment, step S3304 + step S3305 can be implemented as an independent embodiment, step S3301 + step S3302 + step S3304 + step S3305 can be implemented as an independent embodiment, and step S3301 + step S3302 + step S3303 + step S3304 + step S3305 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0317] In some embodiments, steps S3303 to S3305 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0318] In some embodiments, step S3301, step S3302, step S3303, and step S3305 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0319] In some embodiments, step S3303 and step S3305 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0320] In some embodiments, step S3301, step S3302, and step S3305 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0321] In some embodiments, step S3301 and step S3302 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0322] In some embodiments, step S3301, step S3302, and step S3303 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0323] In some embodiments, step S3303 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0324] FIG3D is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3D , the embodiment of the present disclosure relates to a communication method, which can be executed by terminal 101 and may include but is not limited to the following steps.

[0325] Step S3401: Receive first indication information.

[0326] In some embodiments, the first indication information may be sent by the network device 102 to the terminal 101. Exemplarily, the network device 102 sends the first indication information to the terminal 101, and accordingly, the terminal 101 receives the first indication information. Exemplarily, the terminal 101 receives the first indication information sent by the network device 102.

[0327] In some embodiments, the first indication information is used to indicate whether the first SCell is a cell requesting an SSB on demand. Exemplarily, the first indication information is used by the terminal 101 to determine whether the first SCell is a cell requesting an SSB on demand.

[0328] The optional implementation of step S3401 can refer to the optional implementation of step S2301 in Figure 2C and other related parts in the embodiment involved in Figure 2C, which will not be repeated here.

[0329] Step S3402: Based on the first indication information, determine that the first SCell is a cell that requests SSB on demand.

[0330] The optional implementation of step S3402 can refer to the optional implementation of step S2302 in Figure 2C and other related parts in the embodiment involved in Figure 2C, which will not be repeated here.

[0331] Step S3403, detect whether the first SCell is sending SSB (or detect whether the network device 102 is sending the SSB of the first SCell, where the network device 102 sending the SSB of the first SCell may mean that the network device 102 sends the SSB in the first SCell).

[0332] The optional implementation of step S3403 can refer to the optional implementation of step S2404 in Figure 2C and other related parts in the embodiment involved in Figure 2C, which will not be repeated here.

[0333] Step S3404: Send first information to the network device 102 on the first SCell, where the first information is used to instruct the network device 102 to send the SSB on the first SCell.

[0334] In some embodiments, the first information may be sent on the first SCell by the terminal 101. Exemplarily, the first information may be sent by the terminal 101 on the first SCell to the network device 102, that is, the terminal 101 sends the first information to the network device 102 on the first SCell, and correspondingly, the network device 102 receives the first information sent by the terminal 101 on the first SCell.

[0335] The optional implementation of step S3404 can refer to the optional implementation of step S2202 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0336] Step S3405: ​​Receive the SSB sent by the network device 102 in the first SCell.

[0337] Exemplarily, the network device 102 sends the SSB in the first SCell, and accordingly, the terminal 101 receives the SSB sent by the network device 102 in the first SCell.

[0338] The optional implementation of step S3405 can refer to the optional implementation of step S2204 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0339] The method involved in the embodiments of the present disclosure may include at least one of steps S3401 to S3405. For example, step S3401 + step S3402 can be implemented as an independent embodiment, step S3404 can be implemented as an independent embodiment, step S3401 + step S3402 + step S3404 can be implemented as an independent embodiment, step S3403 + step S3404 can be implemented as an independent embodiment, step S3403 + step S3404 + step S3405 can be implemented as an independent embodiment, step S3404 + step S3405 can be implemented as an independent embodiment, step S3401 + step S3402 + step S3404 + step S3405 can be implemented as an independent embodiment, and step S3401 + step S3402 + step S3403 + step S3404 + step S3405 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0340] In some embodiments, steps S3403 to S3405 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0341] In some embodiments, step S3401, step S3402, step S3403, and step S3405 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0342] In some embodiments, step S3403 and step S3405 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0343] In some embodiments, step S3401, step S3402, and step S3405 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0344] In some embodiments, step S3401 and step S3402 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0345] In some embodiments, step S3401, step S3402, and step S3403 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0346] In some embodiments, step S3403 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0347] FIG3E is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG3E , the embodiment of the present disclosure relates to a communication method, which can be executed by terminal 101 and may include but is not limited to the following steps.

[0348] Step S3501: Determine that the first secondary cell SCell is a cell that requests SSB on demand.

[0349] In some embodiments, a possible implementation of determining that the first secondary cell SCell is a cell that requests an SSB on demand includes: determining that the first SCell is a cell that requests an SSB on demand based on terminal implementation. In one possible implementation, if the SSB of the first SCell cannot be detected at the SSB reception moment of the first SCell, then the first SCell is determined to be a cell that requests an SSB on demand.

[0350] In some embodiments, possible implementation methods of determining that the first secondary cell SCell is a cell that requests SSB on demand include: receiving first indication information sent by a network device, the first indication information being used to indicate whether the first SCell is a cell that requests SSB on demand; based on the first indication information, determining that the first SCell is a cell that requests SSB on demand.

[0351] In some embodiments, the first indication information is a newly defined information element IE, and the first indication information is carried in one of the following information elements: serving cell common configuration ServingCellConfigCommon; serving cell configuration ServingCellConfig; secondary cell configuration ScellConfig.

[0352] Step S3502: Request the network device 102 to send SSB in the first SCell.

[0353] In some embodiments, a possible implementation of the request to the network device 102 to send an SSB in the first SCell includes: sending second indication information to the network device 102 via the second cell, the second indication information being used to instruct the network device 102 to send the SSB in the first SCell; wherein the second cell and the first SCell are carrier aggregated. Optionally, in some embodiments, before the terminal 101 sends the second indication information, the terminal 101 may first detect whether the first SCell is sending an SSB (or detect whether the network device 102 is sending the SSB of the first SCell, wherein the network device 102 sending the SSB of the first SCell may refer to the network device 102 sending the SSB in the first SCell).

[0354] In some embodiments, terminal 101 receives first radio resource control (RRC) signaling sent by network device 102, where the first RRC signaling includes at least one SCell. Possible implementations of sending the second indication information to network device 102 via the second cell include: the at least one SCell includes the first SCell, and the second indication information is sent to network device 102 via the second cell.

[0355] In some embodiments, the first RRC signaling is signaling of adding and / or modifying the SCell.

[0356] In some embodiments, the second indication information is a second RRC signaling, and the second RRC signaling includes the identifiers of one or more SCells among the above-mentioned at least one SCell and / or the SSB request indication of one or more SCells; wherein the above-mentioned one or more SCells include the first SCell.

[0357] In some embodiments, the second indication information is a MAC-CE; wherein the MAC-CE includes a first bitmap, the first bitmap is used to indicate whether the corresponding SCell is requested to send the SSB, the first bitmap includes one or more first indication bits, the one or more first indication bits are used to indicate whether the corresponding SCell is requested to send the SSB, and the one or more first indication bits have a one-to-one correspondence with the at least one SCell;

[0358] Alternatively, the MAC-CE includes a second bitmap, which is used to indicate whether to request to send SSB in one or more third cells. The second bitmap includes one or more second indication bits, which are used to indicate whether to request to send SSB in the corresponding third cell. The one or more second indication bits correspond one-to-one to the one or more third cells. The one or more third cells are one or more cells among the at least one SCell that request synchronization signal blocks SSB on demand, and the one or more third cells include the first SCell.

[0359] In some embodiments, the terminal 101 receives an SCell activation / deactivation MAC CE sent by the network device 102, and the SCell activation / deactivation MAC CE includes an activation / deactivation indication bit of each SCell in the above-mentioned at least one SCell; wherein, the possible implementation method of sending the second indication information to the network device 102 through the second cell includes: the above-mentioned at least one SCell includes a first SCell and the first SCell is an activated SCell, and the second indication information is sent to the network device 102 through the second cell.

[0360] In some embodiments, possible implementations of sending the second indication information to the network device 102 through the second cell include: determining that time and frequency synchronization with the first SCell is required; and sending the second indication information to the network device 102 through the second cell.

[0361] In some embodiments, possible implementations of sending the second indication information to the network device 102 through the second cell include: determining that layer 1 / layer 3 measurement needs to be performed on the first SCell; and sending the second indication information to the network device 102 through the second cell.

[0362] In some embodiments, a possible implementation of the request to the network device 102 to send the SSB in the first SCell includes: sending first information to the network device 102 on the first SCell, where the first information is used to instruct the network device 102 to send the SSB in the first SCell. Optionally, in some embodiments, before the terminal 101 sends the first information, the terminal 101 may first detect whether the first SCell is sending the SSB (or detect whether the network device 102 is sending the SSB of the first SCell, where the network device 102 sending the SSB of the first SCell may refer to the network device 102 sending the SSB in the first SCell).

[0363] In some embodiments, the terminal 101 obtains the configuration of the first information associated with the first SCell from the SIB or dedicated RRC signaling.

[0364] In some embodiments, the possible implementation of sending the first information to the network device 102 includes: sending the first information to the network device 102 based on the configuration of the first information associated with the first SCell.

[0365] In some embodiments, the configuration of the first information associated with the first SCell includes at least one of the following: the initial transmission power of the first information, or a parameter used to calculate the initial transmission power; the power climbing step of the first information; the maximum number of transmissions of the first information; the preamble code index or sequence reserved for the first information; the configuration information of the random access opportunity RO resources, the RO resources are used to send the first information; the configuration of the timer, the timer is used to indicate the length of time that the terminal 101 listens to the SSB sent by the first SCell, and the timer is used for the terminal 101 to determine whether the first information needs to be resent.

[0366] In some embodiments, the terminal 101 receives a random access response MAC PDU including a RAPID header of the above-mentioned preamble index or sequence, and determines that the network device confirms the SSB request for the first SCell.

[0367] For the implementation of the terminal side method involved in the embodiments of the present disclosure, please refer to the description of the relevant steps of the terminal 101 in Figures 2A to 2D above, which will not be repeated here.

[0368] FIG4A is a flow chart showing a communication method according to an embodiment of the present disclosure. As shown in FIG4A , the embodiment of the present disclosure relates to a communication method, which can be executed by the network device 102 and can include but is not limited to the following steps.

[0369] Step S4101: Receive second indication information.

[0370] In some embodiments, the second indication information may be sent by the terminal 101. For example, the second indication information may be sent by the terminal 101 to the network device 102, that is, the terminal 101 sends the second indication information to the network device 102, and accordingly, the network device 102 receives the second indication information sent by the terminal 101.

[0371] In some embodiments, the second indication information may be sent by the terminal 101 through the second cell. Exemplarily, the second indication information may be sent by the terminal 101 to the network device 102 through the second cell, that is, the terminal 101 sends the second indication information to the network device 102 through the second cell, and accordingly, the network device 102 receives the second indication information sent by the terminal 101 through the second cell.

[0372] In some embodiments, when the terminal 101 determines that the first SCell is a cell that requests SSB on demand, it can send second indication information to the network device 102 through the second cell. The second indication information is used to instruct the network device 102 to send SSB in the first SCell.

[0373] The optional implementation of step S4101 can refer to the optional implementation of step S2102 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0374] Step S4102: Send an SSB in the first SCell. Exemplarily, network device 102 sends an SSB to terminal 101 in the first SCell. Accordingly, terminal 101 receives the SSB sent by network device 102 in the first SCell. Exemplarily, terminal 101 may receive the SSB sent by network device 102 in the first SCell via the second cell.

[0375] The optional implementation of step S4102 can refer to the optional implementation of step S2104 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.

[0376] The method involved in the embodiment of the present disclosure may include at least one of step S4101 and step S4102. For example, step S4101 may be implemented as an independent embodiment, and step S4101 + step S4102 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0377] In some embodiments, step S4102 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0378] FIG4B is a flow chart illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG4B , the embodiment of the present disclosure relates to a communication method, which may be executed by the network device 102 and may include but is not limited to the following steps.

[0379] Step S4201: Receive first information, where the first information is used to instruct the network device 102 to send SSB in the first SCell.

[0380] In some embodiments, the first information may be sent on the first SCell by the terminal 101. Exemplarily, the first information may be sent by the terminal 101 on the first SCell to the network device 102, that is, the terminal 101 sends the first information to the network device 102 on the first SCell, and correspondingly, the network device 102 receives the first information sent by the terminal 101 on the first SCell.

[0381] The optional implementation of step S4201 can refer to the optional implementation of step S2202 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0382] Step S4202: Send an SSB in the first SCell. Exemplarily, the network device 102 sends the SSB in the first SCell, and correspondingly, the terminal 101 receives the SSB sent by the network device 102 in the first SCell.

[0383] The optional implementation of step S4202 can refer to the optional implementation of step S2204 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.

[0384] The method involved in the embodiment of the present disclosure may include at least one of step S4201 and step S4202. For example, step S4201 may be implemented as an independent embodiment, and step S4201 + step S4202 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0385] In some embodiments, step S4202 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0386] Figure 4C is a flow chart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 4C, the present disclosure embodiment relates to a communication method, which can be executed by the network device 102 and may include but is not limited to the following steps.

[0387] Step S4301: Send first indication information.

[0388] In some embodiments, the first indication information may be sent by the network device 102 to the terminal 101. Exemplarily, the network device 102 sends the first indication information to the terminal 101, and accordingly, the terminal 101 receives the first indication information. Exemplarily, the terminal 101 receives the first indication information sent by the network device 102.

[0389] In some embodiments, the first indication information is used to indicate whether the first SCell is a cell requesting an SSB on demand. Exemplarily, the first indication information is used by the terminal 101 to determine whether the first SCell is a cell requesting an SSB on demand.

[0390] The optional implementation of step S4301 can refer to the optional implementation of step S2301 in Figure 2C and other related parts in the embodiment involved in Figure 2C, which will not be repeated here.

[0391] Step S4302: Receive second indication information, where the second indication information is used to instruct the network device 102 to send SSB in the first SCell.

[0392] In some embodiments, the second indication information may be sent by the terminal 101. For example, the second indication information may be sent by the terminal 101 to the network device 102, that is, the terminal 101 sends the second indication information to the network device 102, and accordingly, the network device 102 receives the second indication information sent by the terminal 101.

[0393] In some embodiments, the second indication information may be sent by terminal 101 via the second cell. Exemplarily, the second indication information may be sent by terminal 101 to network device 102 via the second cell, i.e., terminal 101 sends the second indication information to network device 102 via the second cell, and accordingly, network device 102 receives the second indication information sent by terminal 101 via the second cell. In some embodiments, the second cell and the first SCell are carrier aggregated.

[0394] The optional implementation of step S4302 can refer to the optional implementation of step S2303 in Figure 2C and other related parts in the embodiment involved in Figure 2C, which will not be repeated here.

[0395] Step S4303: Send an SSB in the first SCell. Exemplarily, the network device 102 sends the SSB in the first SCell, and correspondingly, the terminal 101 receives the SSB sent by the network device 102 in the first SCell.

[0396] The optional implementation of step S4303 can refer to the optional implementation of step S2305 in Figure 2C and other related parts in the embodiment involved in Figure 2C, which will not be repeated here.

[0397] The method involved in the embodiment of the present disclosure may include at least one of steps S4301 to S4303. For example, step S4301 + step S4302 may be implemented as an independent embodiment, and step S4301 + step S4302 + step S4303 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0398] In some embodiments, step S4303 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0399] FIG4D is a flow chart illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG4D , the present disclosure embodiment relates to a communication method, which may be executed by the network device 102 and may include but is not limited to the following steps.

[0400] Step S4401: Send first indication information.

[0401] In some embodiments, the first indication information may be sent by the network device 102 to the terminal 101. Exemplarily, the network device 102 sends the first indication information to the terminal 101, and accordingly, the terminal 101 receives the first indication information. Exemplarily, the terminal 101 receives the first indication information sent by the network device 102.

[0402] In some embodiments, the first indication information is used to indicate whether the first SCell is a cell requesting an SSB on demand. Exemplarily, the first indication information is used by the terminal 101 to determine whether the first SCell is a cell requesting an SSB on demand.

[0403] The optional implementation of step S4401 can refer to the optional implementation of step S2401 in Figure 2D and other related parts of the embodiment involved in Figure 2D, which will not be repeated here.

[0404] Step S4402: Receive first information, where the first information is used to instruct the network device 102 to send SSB in the first SCell.

[0405] In some embodiments, the first information may be sent on the first SCell by the terminal 101. Exemplarily, the first information may be sent by the terminal 101 on the first SCell to the network device 102, that is, the terminal 101 sends the first information to the network device 102 on the first SCell, and correspondingly, the network device 102 receives the first information sent by the terminal 101 on the first SCell.

[0406] The optional implementation of step S4402 can refer to the optional implementation of step S2403 in Figure 2D and other related parts in the embodiment involved in Figure 2D, which will not be repeated here.

[0407] Step S4403: Send an SSB in the first SCell. Exemplarily, the network device 102 sends the SSB in the first SCell, and correspondingly, the terminal 101 receives the SSB sent by the network device 102 in the first SCell.

[0408] The optional implementation of step S4403 can refer to the optional implementation of step S2405 in Figure 2D and other related parts of the embodiment involved in Figure 2D, which will not be repeated here.

[0409] The method involved in the embodiment of the present disclosure may include at least one of steps S3401 to S3403. For example, step S3401 + step S3402 may be implemented as an independent embodiment, and step S3401 + step S3402 + step S3403 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0410] In some embodiments, step S3403 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0411] Figure 4E is a flow chart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 4E, the embodiment of the present disclosure relates to a communication method, which can be executed by the network device 102 and may include but is not limited to the following steps.

[0412] Step S4501: receiving second indication information sent by the terminal through the second cell, where the second indication information is used to instruct the network device to send SSB in the first SCell; the first SCell is a cell that requests SSB on demand.

[0413] In some embodiments, the second cell and the first SCell are carrier aggregated.

[0414] In some embodiments, first RRC signaling is sent, the first RRC signaling including at least one SCell, including the first SCell. Upon receiving the first RRC signaling, where the at least one SCell included in the first RRC signaling includes the first SCell, and terminal 101 determines that the first SCell is a cell requesting an on-demand SSB, terminal 101 may send the second indication information to network device 102 via the second cell. In some embodiments, the first RRC signaling is signaling for adding and / or modifying an SCell.

[0415] In some embodiments, the second indication information is a second RRC signaling, and the second RRC signaling includes the identifiers of one or more SCells among the at least one SCell and / or the SSB request indication of the one or more SCells; wherein the one or more SCells include the first SCell.

[0416] In some embodiments, the first SCell is an added and / or modified SCell, and the second indication information is a media access control-control element MAC-CE; wherein the MAC-CE includes a first bitmap, the first bitmap is used to indicate whether the corresponding SCell is requested to send SSB, the first bitmap contains one or more first indication bits, the one or more first indication bits are used to indicate whether the corresponding SCell is requested to send SSB, and the one or more first indication bits correspond one-to-one with the at least one SCell; or, the MAC-CE includes a second bitmap, the second bitmap is used to indicate whether one or more third cells are requested to send SSB, the second bitmap includes one or more second indication bits, the one or more second indication bits are used to indicate whether the corresponding third cell is requested to send SSB, the one or more second indication bits correspond one-to-one with the one or more third cells, the one or more third cells are one or more cells among the at least one SCell that request synchronization signal blocks SSB on demand, and the one or more third cells include the first SCell.

[0417] In some embodiments, an SCell activation / deactivation MAC CE is sent, wherein the SCell activation / deactivation MAC CE includes an activation / deactivation indication bit of each SCell in at least one SCell, wherein the at least one SCell includes the first SCell. Exemplarily, the terminal 101 receives the SCell activation / deactivation MAC CE, wherein the SCell activation / deactivation MAC CE indicates activation of the SCell associated with SCellindexi, wherein the SCell associated with SCellindexi is included in the at least one SCell included in the first RRC signaling, wherein the SCell associated with SCellindexi includes the first SCell, then the terminal 101 sends the second indication information to the network device 102 through the second cell to indicate that the network device requires the first SCell to send the SSB.

[0418] In some embodiments, the first SCell associated with the second indication information is an SCell requiring time-frequency synchronization. Exemplarily, if the terminal 101 determines that the first SCell is an SCell requiring time-frequency synchronization, the terminal 101 sends the second indication information to the network device 102 via the second cell to indicate that the network device requires the first SCell to send an SSB.

[0419] In some embodiments, the first SCell associated with the second indication information is an SCell requiring layer 1 / layer 3 measurement. Exemplarily, the terminal 101 determines that the first SCell is an SCell requiring layer 1 / layer 3 measurement, and then the terminal 101 sends the second indication information to the network device 102 through the second cell to indicate that the network device requires the first SCell to send the SSB.

[0420] In some embodiments, a first indication message is sent to the terminal 101, and the first indication message is used to indicate whether the first SCell is the cell for the on-demand SSB request; wherein the first indication message is used by the terminal to determine that the first SCell is the cell for the on-demand SSB request.

[0421] In some embodiments, the first indication information is a newly defined information element IE, and the first indication information is carried in one of the following information elements: serving cell common configuration ServingCellConfigCommon; serving cell configuration ServingCellConfig; secondary cell configuration ScellConfig.

[0422] For the implementation of the method on the network device side involved in the embodiment of the present disclosure, please refer to the description of the relevant steps of the network device 102 in Figures 2A and 2C above, and will not be repeated here.

[0423] Figure 4F is a flow chart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 4F, the embodiment of the present disclosure relates to a communication method, which can be executed by the network device 102 and may include but is not limited to the following steps.

[0424] Step S4601, receiving the first information sent by the terminal 101, the above-mentioned first information is the information sent by the terminal 101 on the first SCell, and the above-mentioned first information is used to instruct the above-mentioned network device to send SSB in the above-mentioned first SCell; the above-mentioned first SCell is a cell that requests SSB on demand.

[0425] In some embodiments, an SIB or dedicated RRC signaling is sent, and the SIB or dedicated RRC signaling includes a configuration of the first information associated with the first SCell. The configuration of the first information associated with the first SCell can be used by the terminal 101 to send the first information to the network device 102 on the first SCell based on the configuration, to instruct the network device 102 to send the SSB on the first SCell.

[0426] In some embodiments, the configuration of the first information associated with the above-mentioned first SCell includes at least one of the following: the initial transmission power of the above-mentioned first information, or a parameter used to calculate the above-mentioned initial transmission power; the power climbing step of the above-mentioned first information; the maximum number of transmissions of the above-mentioned first information; the preamble code index or sequence reserved for the above-mentioned first information; the configuration information of the random access opportunity RO resources, the above-mentioned RO resources are used to send the above-mentioned first information; the configuration of the timer, the above-mentioned timer is used to indicate the duration of the terminal 101 listening to the SSB sent by the above-mentioned first SCell, and the above-mentioned timer is used by the terminal 101 to determine whether the above-mentioned first information needs to be resent.

[0427] In some embodiments, a random access response media access control protocol data unit MACPDU is sent to the terminal 101, and the random access response MACPDU includes a header of a random access preamble identifier RAPID of the preamble code index or sequence.

[0428] For the implementation of the method on the network device side involved in the embodiment of the present disclosure, please refer to the description of the relevant steps of the network device 102 in Figures 2B and 2D above, which will not be repeated here.

[0429] FIG5A is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG5A , the method according to the embodiment of the present disclosure can be applied to a communication system 100 , and the method includes but is not limited to the following steps.

[0430] Step S5101: Terminal 101 determines that the first SCell is a cell that requests SSB on demand.

[0431] The optional implementation of step S5101 can be found in step S2101 of Figure 2A, step S2201 of Figure 2B, step S2301 and step S2302 of Figure 2C, step S2401 and step S2402 of Figure 2D, and other related parts in the embodiments involved in Figures 2A-2D, which will not be repeated here.

[0432] In step S5102, the terminal 101 sends second indication information through the second cell, where the second indication information is used to instruct the network device to send an SSB in the first secondary cell SCell.

[0433] In some embodiments, the second cell and the first SCell are carrier aggregated.

[0434] The optional implementation of step S5102 can refer to the optional implementation of step S2102 in Figure 2A, step S2303 in Figure 2C, and other related parts in the embodiments involved in Figures 2A and 2C, which will not be repeated here.

[0435] Optionally, in some embodiments, before the terminal 101 sends the above-mentioned second indication information, the terminal 101 may first detect whether the first SCell is sending an SSB (or detect whether the network device 102 is sending the SSB of the first SCell, where the network device 102 sending the SSB of the first SCell may refer to the network device 102 sending the SSB in the first SCell). For optional implementation methods, please refer to the optional implementation methods of step S2103 of Figure 2A and other related parts of the embodiments involved in Figure 2A, which will not be repeated here.

[0436] FIG5B is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG5B , the method according to an embodiment of the present disclosure can be applied to a communication system 100 , and the method includes but is not limited to the following steps.

[0437] Step S5201: Terminal 101 determines that the first SCell is a cell that requests SSB on demand.

[0438] The optional implementation of step S5201 can be found in step S2101 of Figure 2A, step S2201 of Figure 2B, step S2301 and step S2302 of Figure 2C, step S2401 and step S2402 of Figure 2D, and other related parts in the embodiments involved in Figures 2A-2D, which will not be repeated here.

[0439] In step S5202, the terminal 101 sends first information to the network device 102 on the first SCell. The first information is used to instruct the network device 102 to send SSB on the first SCell.

[0440] The optional implementation of step S5202 can refer to the optional implementation of step S2202 in Figure 2B, step S2403 in Figure 2D, and other related parts in the embodiments involved in Figures 2B and 2D, which will not be repeated here.

[0441] Optionally, in some embodiments, before the terminal 101 sends the above-mentioned second indication information, the terminal 101 may first detect whether the first SCell is sending an SSB (or detect whether the network device 102 is sending the SSB of the first SCell, where the network device 102 sending the SSB of the first SCell may refer to the network device 102 sending the SSB in the first SCell). Optional implementation methods can be found in the optional implementation methods of step S2203 of Figure 2B and other related parts of the embodiments involved in Figure 2B, which will not be repeated here.

[0442] In some embodiments, the above method may include the method described in the above terminal side, network device side, etc. embodiments, which will not be repeated here.

[0443] The embodiments of the present disclosure propose an SSB request method in a carrier aggregation scenario, which solves the problem of under what conditions and how a terminal should request an on-demand SSB SCell to send an SSB in a carrier aggregation scenario.

[0444] In some embodiments, the terminal indicates to the network device through the second indication information that the SCell needs to send the SSB. Before sending the second indication information, the terminal first detects whether the SCell is sending the SSB.

[0445] Exemplarily, the terminal receives RRC signaling of SCell addition, and the terminal indicates to the network device through the second indication information that it needs to request the "added SCell" to send SSB. Before sending the second indication information, the terminal first detects whether the "added SCell" is sending SSB. The second indication information can be RRC signaling or MAC CE. Exemplarily, MAC CE can be a bitmap, and each bit in the bitmap corresponds to a NES SCell. For example, the i-th bit indicates whether it is necessary to request NES Scell ​​i (SCellindex i) to send SSB, 1 means yes, 0 means no, or 1 means no, 0 means yes. Exemplarily, RRC signaling can directly carry the identifier (SCellindex) of the NES SCell and / or the SSB request indication, indicating that the network device needs to request the SSB of the SCell associated with the SCellindex. The RRC signaling can be a newly defined RRC signaling or DedicatedSIBRequest.

[0446] Exemplarily, the terminal receives an SCell activation / deactivation MAC CE, which indicates the activation of the SCell associated with SCellindex i. The terminal indicates through a second indication message that the network device needs to request the "activated SCell i" to send an SSB. Before sending the second indication message, the terminal first detects whether the "activated SCell i" is sending an SSB.

[0447] For example, the terminal needs to synchronize time and frequency with the SCell. The terminal indicates to the network device through the second indication information that it needs to request the "SCell that needs time and frequency synchronization" to send SSB. Before sending the second indication information, the terminal first detects whether the "SCell that needs time and frequency synchronization" is sending SSB.

[0448] Exemplarily, the terminal needs to perform layer 1 / layer 3 measurement on the SCell. The measurement of the deactivated SCell is based on the long cycle configured by the network device. When / before the measurement opportunity arrives, the terminal indicates the network device through the second indication information that it needs to request the "SCell requiring layer 1 / layer 3 measurement" to send SSB. Before sending the second indication information, the terminal first detects whether the "SCell requiring layer 1 / layer 3 measurement" is sending SSB.

[0449] In some embodiments, the terminal requests the SCell to send an SSB through the first message. Before sending the first message, the terminal first detects whether the SCell is sending an SSB.

[0450] Exemplarily, the first information may be a WUS signal, the WUS signal may be a preamble sent, the preamble may be a preamble reserved by the system, and the sending of the preamble indicates a request for SSB.

[0451] Exemplarily, the terminal obtains the configuration of the WUS through dedicated RRC signaling or SIB, which exemplarily includes but is not limited to the following parameters: the preamble index or sequence reserved for UL WUS, and / or the configuration information of the RO resource of the random access opportunity. The RO resource is used to send the WUS. The parameters used to calculate the initial power for sending the WUS, or directly the initial power for sending the WUS, the power ramp of the WUS, the maximum number of WUS transmissions, the configuration of the timer, etc. In one possible implementation, more than one NES SCell is supported, and the WUS configuration can be per NES SCell (each NES SCell has its own associated WUS configuration including but not limited to the above parameters, each NES SCell has an associated preamble index or sequence and / or configuration information of the RO resource of the random access opportunity, and the preamble is used to request this NES Scell ​​to send an SSB) or multiple NES SCells share a set of configurations.

[0452] For example, after sending the WUS, the terminal detects the SSB sent by the SCell. If no SSB is received, the terminal continues to increase power and send the WUS until the SSB is received or the maximum uplink transmit power of the terminal or the maximum uplink transmit power allowed by the cell or the maximum number of WUS transmissions is reached.

[0453] For example, after the terminal sends the WUS, the terminal receives the RAPID header of the preamble it transmitted, which is considered to be a successful random access. The terminal notifies the upper layer of the receipt of the SSB request confirmation.

[0454] Exemplarily, the SCell may be replaced by an NES cell.

[0455] In some embodiments, the network device indicates, through first indication information, whether the SSB of the SCell is sent based on a request.

[0456] Exemplarily, the SCell addition (scell addition) RRC signaling indicates through the first indication information whether the SCell is a normal SCell or an on-demand required SSB SCell (it may have other names, which are not specifically limited in this disclosure), that is, it is used to indicate whether the SCell is an SCell that sends SSB based on a request. For example, a new IE is defined in ServingCellConfigCommon / ServingCellConfig / SCellConfig to indicate whether the SCell is a normal SCell. Exemplarily, SSBstate is defined, and the value is required, which indicates that the Scell ​​is a SCell that sends SSB based on a request. It should be noted that this is just an example, and there may be other implementation forms, which are not specifically limited in this disclosure.

[0457] As another implementation, the terminal determines whether the SSB of the SCell is sent based on a request. For example, if the terminal cannot detect the SSB sent by the SCell during SCell activation / SCell time-frequency synchronization / SCell measurement, the terminal determines that the SCell is sent based on a request. The terminal continues to perform the above step of instructing the network device to send the SSB of the SCell through the second indication information, or continues to perform the above step of requesting the SCell to send the SSB through the third indication information.

[0458] The present disclosure also provides an apparatus for implementing any of the above methods. For example, a device is provided that includes units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another device is provided that includes units or modules for implementing each step performed by a network device in any of the above methods.

[0459] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0460] In the embodiments of the present disclosure, the processor is a circuit with information processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0461] Figure 6A is a schematic diagram of the structure of a terminal according to an embodiment of the present disclosure. As shown in Figure 6A , terminal 6100 may include at least one of a transceiver module 6101 and a processing module 6102. In some embodiments, processing module 6102 is configured to determine that a first secondary cell (SCell) is a cell requesting an on-demand synchronization signal block (SSB); and transceiver module 6101 is configured to request a network device to transmit the SSB in the first SCell.

[0462] In some embodiments, the processing module 6102 is specifically configured to: determine, based on the terminal implementation, that the first SCell is a cell that requests SSB on demand. In one possible implementation, if the SSB of the first SCell cannot be detected at the SSB reception moment of the first SCell, then determine that the first SCell is a cell that requests SSB on demand.

[0463] In some embodiments, the transceiver module 6101 is further configured to receive first indication information sent by a network device, the first indication information being configured to indicate whether the first SCell is a cell requesting an SSB on demand. The processing module 6102 is specifically configured to determine, based on the first indication information, that the first SCell is a cell requesting an SSB on demand.

[0464] In some embodiments, the first indication information is a newly defined information element IE, and the first indication information is carried in one of the following information elements: serving cell common configuration ServingCellConfigCommon; serving cell configuration ServingCellConfig; secondary cell configuration ScellConfig.

[0465] In some embodiments, the transceiver module 6101 is specifically used to: send second indication information to the network device 102 through the second cell, and the second indication information is used to instruct the network device 102 to send SSB in the first SCell; wherein the second cell and the first SCell are carrier aggregated.

[0466] In some embodiments, the transceiver module 6101 is further configured to receive first radio resource control (RRC) signaling sent by the network device 102, where the first RRC signaling includes at least one SCell. Specifically, the transceiver module 6101 is configured to: wherein the at least one SCell includes the first SCell, and to send second indication information to the network device 102 via the second cell.

[0467] In some embodiments, the first RRC signaling is signaling of adding and / or modifying the SCell.

[0468] In some embodiments, the second indication information is a second RRC signaling, and the second RRC signaling includes the identifiers of one or more SCells among the above-mentioned at least one SCell and / or the SSB request indication of one or more SCells; wherein the above-mentioned one or more SCells include the first SCell.

[0469] In some embodiments, the second indication information is MAC-CE; wherein, MAC-CE includes a first bitmap, the first bitmap is used to indicate whether the corresponding SCell is requested to send SSB, the first bitmap contains one or more first indication bits, the one or more first indication bits are used to indicate whether the corresponding SCell is requested to send SSB, and the one or more first indication bits correspond one-to-one with the at least one SCell; or, MAC-CE includes a second bitmap, the second bitmap is used to indicate whether one or more third cells are requested to send SSB, the second bitmap includes one or more second indication bits, the one or more second indication bits are used to indicate whether the corresponding third cell is requested to send SSB, the one or more second indication bits correspond one-to-one with the one or more third cells, the one or more third cells are one or more cells among the at least one SCell that request synchronization signal blocks SSB on demand, and the one or more third cells include the first SCell.

[0470] In some embodiments, the transceiver module 6101 is further configured to receive an SCell activation / deactivation MAC CE sent by the network device 102, where the SCell activation / deactivation MAC CE includes an activation / deactivation indication bit for each SCell in the at least one SCell. The transceiver module 6101 is specifically configured to send second indication information to the network device 102 via the second cell, when the at least one SCell includes a first SCell and the first SCell is an activated SCell.

[0471] In some embodiments, the processing module 6102 determines that time and frequency synchronization with the first SCell is required; the transceiver module 6101 sends the second indication information to the network device 102 through the second cell.

[0472] In some embodiments, the processing module 6102 determines that layer 1 / layer 3 measurement needs to be performed on the first SCell; the transceiver module 6101 sends second indication information to the network device 102 through the second cell.

[0473] In some embodiments, the transceiver module 6101 sends first information to the network device 102 on the first SCell, where the first information is used to instruct the network device 102 to send the SSB on the first SCell.

[0474] In some embodiments, the transceiver module 6101 obtains the configuration of the first information associated with the first SCell from the SIB or dedicated RRC signaling.

[0475] In some embodiments, the transceiver module 6101 is specifically used to: send the first information to the network device 102 based on the configuration of the first information associated with the first SCell.

[0476] In some embodiments, the configuration of the first information associated with the first SCell includes at least one of the following: the initial transmission power of the first information, or a parameter used to calculate the initial transmission power; the power climbing step of the first information; the maximum number of transmissions of the first information; the preamble code index or sequence reserved for the first information; the configuration information of the random access opportunity RO resources, the RO resources are used to send the first information; the configuration of the timer, the timer is used to indicate the length of time that the terminal 101 listens to the SSB sent by the first SCell, and the timer is used for the terminal 101 to determine whether the first information needs to be resent.

[0477] In some embodiments, the transceiver module 6101 is further used to receive a random access response MAC PDU including a RAPID header of the above-mentioned preamble code index or sequence, and determine that the network device confirms the SSB request for the first SCell.

[0478] Optionally, the transceiver module is used to execute at least one of the communication steps such as sending and / or receiving performed by the terminal 101 in any of the above methods (for example, step S2102, step S2202, step S2303, step S2403, but not limited to this), which are not described in detail here. Optionally, the processing module is used to execute at least one of the other steps (for example, step S2101, step S2103, step S2201, step S2203, step S2302, step S2304, step S2402, step S2404, but not limited to this) performed by the terminal 101 in any of the above methods, which are not described in detail here.

[0479] Figure 6B is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure. As shown in Figure 6B, network device 6200 may include at least one of a transceiver module 6201 and a processing module 6202. In some embodiments, transceiver module 6201 is configured to receive second indication information sent by a terminal via a second cell, where the second indication information instructs the network device to transmit a synchronization signal block (SSB) in a first secondary cell (SCell); the first SCell is a cell that requests SSBs on demand; and the second cell and the first SCell are carrier aggregated.

[0480] In some embodiments, the transceiver module 6201 is further configured to send a first RRC signaling, wherein the first RRC signaling includes at least one SCell, and the at least one SCell includes the first SCell. In some embodiments, the first RRC signaling is signaling for adding and / or modifying an SCell.

[0481] In some embodiments, the second indication information is a second RRC signaling, and the second RRC signaling includes the identifiers of one or more SCells among the at least one SCell and / or the SSB request indication of the one or more SCells; wherein the one or more SCells include the first SCell.

[0482] In some embodiments, the first SCell is an added and / or modified SCell, and the second indication information is a media access control-control element MAC-CE; wherein the MAC-CE includes a first bitmap, the first bitmap is used to indicate whether the corresponding SCell is requested to send SSB, the first bitmap contains one or more first indication bits, the one or more first indication bits are used to indicate whether the corresponding SCell is requested to send SSB, and the one or more first indication bits correspond one-to-one with the at least one SCell; or, the MAC-CE includes a second bitmap, the second bitmap is used to indicate whether one or more third cells are requested to send SSB, the second bitmap includes one or more second indication bits, the one or more second indication bits are used to indicate whether the corresponding third cell is requested to send SSB, the one or more second indication bits correspond one-to-one with the one or more third cells, the one or more third cells are one or more cells among the at least one SCell that request synchronization signal blocks SSB on demand, and the one or more third cells include the first SCell.

[0483] In some embodiments, the transceiver module 6201 is further used to: send SCell activation / deactivation MAC CE, the above SCell activation / deactivation MAC CE includes an activation / deactivation indication bit of each SCell in at least one SCell, and the above at least one SCell includes the above first SCell.

[0484] In some embodiments, the first SCell associated in the second indication information is an SCell requiring time-frequency synchronization.

[0485] In some embodiments, the first SCell associated in the second indication information is an SCell requiring layer 1 / layer 3 measurement.

[0486] In some embodiments, the transceiver module 6201 is also used to send a first indication message to the terminal 101, and the above-mentioned first indication information is used to indicate whether the above-mentioned first SCell is the cell of the above-mentioned on-demand SSB request; wherein, the above-mentioned first indication information is used by the terminal to determine that the above-mentioned first SCell is the cell of the above-mentioned on-demand SSB request.

[0487] In some embodiments, the first indication information is a newly defined information element IE, and the first indication information is carried in one of the following information elements: serving cell common configuration ServingCellConfigCommon; serving cell configuration ServingCellConfig; secondary cell configuration ScellConfig.

[0488] In some embodiments, the transceiver module 6201 is used to receive first information sent by the terminal, where the first information is information sent by the terminal on the first SCell, and the first information is used to instruct the network device to send a synchronization signal block SSB on the first SCell; the first SCell is a cell that requests SSB on demand.

[0489] In some embodiments, the transceiver module 6201 is further configured to send an SIB or dedicated RRC signaling, where the SIB or dedicated RRC signaling includes a configuration of the first information associated with the first SCell. The configuration of the first information associated with the first SCell can be used by the terminal 101 to send the first information to the network device 102 on the first SCell based on the configuration, thereby instructing the network device 102 to send an SSB on the first SCell.

[0490] In some embodiments, the configuration of the first information associated with the above-mentioned first SCell includes at least one of the following: the initial transmission power of the above-mentioned first information, or a parameter used to calculate the above-mentioned initial transmission power; the power climbing step of the above-mentioned first information; the maximum number of transmissions of the above-mentioned first information; the preamble code index or sequence reserved for the above-mentioned first information; the configuration information of the random access opportunity RO resources, the above-mentioned RO resources are used to send the above-mentioned first information; the configuration of the timer, the above-mentioned timer is used to indicate the duration of the terminal 101 listening to the SSB sent by the above-mentioned first SCell, and the above-mentioned timer is used by the terminal 101 to determine whether the above-mentioned first information needs to be resent.

[0491] In some embodiments, the transceiver module 6201 is further used to: send a random access response media access control protocol data unit MACPDU to the terminal 101, where the random access response MACPDU includes a header of the random access preamble identifier RAPID of the preamble code index or sequence.

[0492] Optionally, the transceiver module is configured to execute at least one of the communication steps (e.g., step S2104, step S2204, step S2301, step S2305, step S2401, and step S2405, but not limited thereto) performed by the network device 102 in any of the above methods, which are not described in detail here. Optionally, the processing module is configured to execute at least one of the other steps performed by the network device 102 in any of the above methods, which are not described in detail here.

[0493] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0494] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0495] 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.

[0496] As shown in Figure 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. Optionally, the communication device 7100 is used to perform any of the above methods. Optionally, one or more processors 7101 are used to call instructions to enable the communication device 7100 to perform any of the above methods.

[0497] 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 of sending and / or receiving in the above method (e.g., step S2102, step S2202, step S2303, step S2403, step S2104, step S2204, step S2301, step S2305, step S2401, step S2405, but not limited thereto), and the processor 7101 performs at least one of the other steps (e.g., step S2101, step S2103, step S2201, step S2203, step S2302, step S2304, step S2402, step S2404, 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, terms such as transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface can be replaced with each other, terms such as transmitter, transmitting unit, transmitter, and transmitting circuit can be replaced with each other, and terms such as receiver, receiving unit, receiver, and receiving circuit can be replaced with each other.

[0498] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing data. Alternatively, all or part of the memories 7102 may be located outside the communication device 7100. In alternative embodiments, the communication device 7100 may include one or more interface circuits 7104. Optionally, the interface circuits 7104 are connected to the memories 7102 and may be configured to receive data from the memories 7102 or other devices, or to send data to the memories 7102 or other devices. For example, the interface circuits 7104 may read data stored in the memories 7102 and send the data to the processor 7101.

[0499] The communication device 7100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0500] 7B is a schematic diagram of the structure of a chip 7200 proposed in an embodiment of the present disclosure. If the communication device 7100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 7200 shown in FIG7B , but the present disclosure is not limited thereto.

[0501] The chip 7200 includes one or more processors 7201. The chip 7200 is configured to execute any of the above methods.

[0502] In some embodiments, chip 7200 further includes one or more interface circuits 7202. Alternatively, terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 7200 further includes one or more memories 7203 for storing data. Alternatively, all or part of memory 7203 may be located external to chip 7200. Optionally, interface circuit 7202 is connected to memory 7203 and may be used to receive data from memory 7203 or other devices, or may be used to send data to memory 7203 or other devices. For example, interface circuit 7202 may read data stored in memory 7203 and send the data to processor 7201.

[0503] In some embodiments, the interface circuit 7202 performs at least one of the communication steps of sending and / or receiving in the above method (e.g., step S2102, step S2202, step S2303, step S2403, step S2104, step S2204, step S2301, step S2305, step S2401, and step S2405, but not limited thereto). The interface circuit 7202 performing the communication steps of sending and / or receiving in the above 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., step S2101, step S2103, step S2201, step S2203, step S2302, step S2304, step S2402, and step S2404, but not limited thereto).

[0504] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0505] 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.

[0506] 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.

[0507] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0508] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0509] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0510] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that, The method is executed by a terminal, and the method includes: Determine that a first secondary cell (SCell) is a cell that requests a synchronization signal block (SSB) on demand; Request the network device to send the SSB on the first SCell.

2. The method according to claim 1, wherein The determining that a first secondary cell (SCell) is a cell that requests a synchronization signal block (SSB) on demand includes: Based on the implementation of the terminal, determine that the first SCell is a cell that requests an SSB on demand.

3. The method according to claim 2, wherein The determining that the first SCell is a cell that requests an SSB on demand based on the implementation of the terminal includes: If the SSB of the first SCell cannot be detected at the SSB reception time of the first SCell, determine that the first SCell is the cell that requests the SSB on demand.

4. The method according to claim 1, characterized in that, The determining that a first secondary cell (SCell) is a cell that requests a synchronization signal block (SSB) on demand includes: Receive first indication information sent by the network device, where the first indication information is used to indicate whether the first SCell is the cell that requests the SSB on demand; Based on the first indication information, determine that the first SCell is the cell that requests the SSB on demand.

5. The method according to claim 4, wherein The first indication information is a newly defined information element (IE), and the first indication information is carried in one of the following information elements: ServingCellConfigCommon; ServingCellConfig; ScellConfig.

6. The method according to claim 1, wherein The requesting the network device to send a synchronization signal block (SSB) on the first SCell includes: Send second indication information to the network device through a second cell, where the second indication information is used to indicate the network device to send the SSB on the first SCell; Wherein, the second cell and the first SCell are carrier aggregated.

7. The method according to claim 6, wherein The method further includes: Receive first radio resource control (RRC) signaling sent by the network device, where the first RRC signaling includes at least one SCell; Wherein, the sending the second indication information to the network device through the second cell includes: The at least one SCell includes the first SCell, and send the second indication information to the network device through the second cell.

8. The method according to claim 7, wherein The first RRC signaling is signaling for SCell addition and / or modification.

9. The method according to claim 7 or 8, characterized in that, The second indication information is second RRC signaling, and the second RRC signaling includes the identifiers of one or more SCells and / or the SSB request indication of the one or more SCells; the one or more SCells are the SCells in the at least one SCell; Wherein, the one or more SCells includes the first SCell.

10. The method according to claim 7 or 8, characterized in that, The second indication information is a media access control - control element (MAC-CE); wherein, The MAC-CE includes a first bitmap for indicating whether to request a corresponding SCell to transmit an SSB. The first bitmap includes one or more first indication bits for indicating whether to request a corresponding SCell to transmit an SSB, and the one or more first indication bits correspond one-to-one to the at least one SCell; or, The MAC-CE includes a second bitmap for indicating whether to request one or more third cells to transmit an SSB. The second bitmap includes one or more second indication bits for indicating whether to request a corresponding third cell to transmit an SSB, and the one or more second indication bits correspond one-to-one to the one or more third cells. The one or more third cells are one or more cells among the at least one SCell that request an SSB on demand, and the one or more third cells include the first SCell.

11. The method according to claim 6, wherein The method further includes: Receiving an SCell activation / deactivation MAC CE sent by the network device, where the SCell activation / deactivation MAC CE includes indication bits for activation / deactivation of each SCell among the at least one SCell; Wherein, the sending the second indication information to the network device via the second cell includes: When the at least one SCell includes the first SCell and the first SCell is an active SCell, sending the second indication information to the network device via the second cell.

12. The method according to claim 6, wherein The sending the second indication information to the network device via the second cell includes: Determining that time-frequency synchronization with the first SCell is required; Sending the second indication information to the network device via the second cell.

13. The method according to claim 6, characterized in that, The sending the second indication information to the network device via the second cell includes: Determining that layer 1 / layer 3 measurements need to be performed on the first SCell; Sending the second indication information to the network device via the second cell.

14. The method according to claim 1, characterized in that, The requesting the network device to transmit a synchronization signal block SSB on the first SCell includes: Sending first information to the network device on the first SCell, where the first information is used to indicate to the network device to transmit the SSB on the first SCell.

15. The method according to claim 14, wherein The method further includes: Obtaining the configuration of the first information associated with the first SCell from a system information block SIB or dedicated RRC signaling.

16. The method according to claim 15, wherein The sending the first information to the network device includes: Sending the first information to the network device based on the configuration of the first information associated with the first SCell.

17. The method according to claim 15 or 16, characterized in that, The configuration of the first information associated with the first SCell includes at least one of the following: The initial transmission power of the first information, or a parameter for calculating the initial transmission power; The power ramping step of the first information; The maximum number of transmission times of the first information; A preamble index or sequence reserved for the first information; Configuration information of a random access opportunity RO resource for transmitting the first information; Configuration of a timer, where the timer is used to indicate the duration for which the terminal listens for the SSB sent by the first SCell, and the timer is used by the terminal to determine whether to retransmit the first information.

18. The method according to claim 17, wherein The method further includes: Receiving a random access response media access control protocol data unit (MAC PDU) with a header including the random access preamble identifier (RAPID) of the preamble index or sequence, and determining that the network device has acknowledged the SSB request for the first SCell.

19. A communication method, characterized in that, The method is performed by a network device, and the method includes: Receiving second indication information sent by the terminal through a second cell, where the second indication information is used to indicate that the network device sends a synchronization signal block (SSB) in the first secondary cell (SCell); the first SCell is a cell that requests the SSB on demand. Wherein, the second cell and the first SCell are carrier aggregated.

20. The method according to claim 19, wherein, The method further includes: Sending a first RRC signaling, where the first RRC signaling includes at least one SCell, and the at least one SCell includes the first SCell.

21. The method according to claim 20, characterized in that, The first RRC signaling is a signaling for SCell addition and / or modification.

22. The method according to claim 20 or 21, characterized in that, The second indication information is a second RRC signaling, and the second RRC signaling includes the identifier of one or more SCells and / or the SSB request indication of the one or more SCells; the one or more SCells are the SCells in the at least one SCell. Wherein, the one or more SCells include the first SCell.

23. The method according to claim 20 or 21, characterized in that, The first SCell is an added and / or modified SCell, and the second indication information is a media access control - control element (MAC-CE); wherein, The MAC-CE includes a first bitmap, where the first bitmap is used to indicate whether to request the SSB to be sent in the corresponding SCell, the first bitmap includes one or more first indication bits, the one or more first indication bits are used to indicate whether to request the SSB to be sent in the corresponding SCell, and the one or more first indication bits correspond one-to-one with the at least one SCell; or, The MAC-CE includes a second bitmap, where the second bitmap is used to indicate whether to request the SSB to be sent in one or more third cells, the second bitmap includes one or more second indication bits, the one or more second indication bits are used to indicate whether to request the SSB to be sent in the corresponding third cell, the one or more second indication bits correspond one-to-one with the one or more third cells, the one or more third cells are one or more cells that request the synchronization signal block (SSB) on demand among the at least one SCell, and the one or more third cells include the first SCell.

24. The method according to claim 19, wherein, The method further includes: Sending an SCell activation / deactivation MAC CE, where the SCell activation / deactivation MAC CE includes the activation / deactivation indication bits of each SCell among the at least one SCell, and the at least one SCell includes the first SCell.

25. The method according to claim 19, wherein: the first SCell associated in the second indication information is an SCell that requires time-frequency synchronization; or the first SCell associated in the second indication information is an SCell that requires layer 1 / layer 3 measurement.

26. The method according to any one of claims 19-25, characterized in that, The method further includes: sending first indication information to the terminal, where the first indication information is used to indicate whether the first SCell is the cell for on-demand requested SSB; wherein, the first indication information is used for the terminal to determine that the first SCell is the cell for on-demand requested SSB.

27. The method according to claim 26, wherein The first indication information is a newly defined information element IE, and the first indication information is carried in one of the following information elements: ServingCellConfigCommon; ServingCellConfig; ScellConfig.

28. A communication method, characterized in that, The method is executed by a network device, and the method includes: receiving first information sent by a terminal, where the first information is information sent by the terminal on a first SCell, and the first information is used to indicate the network device to send a synchronization signal block SSB on the first SCell; the first SCell is a cell for on-demand requested SSB.

29. The method according to claim 28, wherein The method further includes: sending a system information block SIB or a dedicated radio resource control RRC signaling, where the SIB or the dedicated RRC signaling includes a configuration of first information associated with the first SCell.

30. The method according to claim 29, wherein The configuration of the first information associated with the first SCell includes at least one of the following: the initial transmission power of the first information, or a parameter for calculating the initial transmission power; the power ramp step of the first information; the maximum number of transmission times of the first information; a preamble index or sequence reserved for the first information; configuration information of a random access opportunity RO resource, where the RO resource is used to send the first information; configuration of a timer, where the timer is used to indicate the duration for which the terminal listens for the SSB sent by the first SCell, and the timer is used for the terminal to determine whether to re-send the first information.

31. The method according to claim 30, wherein The method further includes: sending a random access response media access control protocol data unit MACPDU to the terminal, where the random access response MACPDU includes a header of a random access preamble identifier RAPID of the preamble index or sequence.

32. A terminal, characterized in that, including: a processing module, configured to determine that a first secondary cell SCell is a cell for on-demand requested synchronization signal block SSB; a transceiver module, configured to request the first SCell to send the SSB to a network device.

33. A network device, characterized in that, including: a transceiver module, configured to receive second indication information sent by a terminal through a second cell, where the second indication information is used to indicate the network device to send a synchronization signal block SSB on the first secondary cell SCell; the first SCell is a cell for on-demand requested SSB; wherein, the second cell and the first SCell are carrier aggregated.

34. A network device, characterized in that, including: A transceiver module, configured to receive a first piece of information sent by a terminal, where the first piece of information is the information sent by the terminal on a first SCell, and the first piece of information is used to instruct the network device to send a synchronization signal block (SSB) on the first SCell; the first SCell is a cell that requests an SSB on demand.

35. A communication system, characterized in that, Comprising: A terminal, configured to execute the communication method according to any one of claims 1-18; A network device, configured to execute the communication method according to any one of claims 19-27, 28-31.

36. A communication device, characterized in that, Comprising: One or more processors; Wherein, the communication device is configured to execute the communication method according to any one of claims 1-18.

37. A communication device, characterized in that, Comprising: One or more processors; Wherein, the communication device is configured to execute the communication method according to any one of claims 19-27, 28-31.

38. A storage medium storing instructions, characterized in that, When the instruction runs on the communication device, the communication device is caused to execute the communication method according to any one of claims 1-18, 19-27, 28-31.

Images