Communication method, terminal, network device and storage medium

Abstract

The invention relates to a communication method, a terminal, network equipment and a storage medium. The method comprises the following steps: receiving first information sent by network equipment, wherein the first information is used for triggering an on-demand request synchronization signal block (OD SSB) of a secondary cell (SCell); and receiving an SSB sent by the network device after a first time, the first time being a time when the terminal receives the first information, and the SSB being at least used for activating the SCell. In the method disclosed by the invention, in the NES scene of the OD SSB, the terminal can receive the SSB in a proper time range according to the time for triggering the first information of the OD SSB, so as to ensure that relevant operations such as SCell activation can still be normally carried out in the NES scene.

Description

Communication method, terminal, network device and storage medium TECHNICAL FIELD

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

[0002] To realize network energy saving (NES), the network side can not send or send some signals on demand, for example, implement NES by on demand synchronization signal block (OD SSB) through a secondary cell (SCell). In an SCell activation process, NES can affect the operation or behavior of a terminal in the activation process.

[0003] SUMMARY

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

[0005] In a first aspect, embodiments of the present disclosure provide a communication method, executed by a terminal, and the method comprises:

[0006] receiving first information sent by a network device, the first information being used for triggering on demand synchronization signal block (OD SSB) of a secondary cell (SCell);

[0007] receiving SSB sent by the network device after a first time, wherein the first time is a time at which the terminal receives the first information, and the SSB is at least used for activating the SCell.

[0008] In a second aspect, embodiments of the present disclosure provide a communication method, executed by a network device, and the method comprises:

[0009] sending first information to a terminal, the first information being used for triggering on demand synchronization signal block (OD SSB) of a secondary cell (SCell);

[0010] sending SSB to the terminal after a first time, wherein the first time is a time at which the first information is sent, and the SSB is at least used for activating the SCell.

[0011] In a third aspect, embodiments of the present disclosure provide a terminal, comprising:

[0012] a transceiver, configured to receive first information sent by a network device, the first information being used for triggering on demand synchronization signal block (OD SSB) of a secondary cell (SCell);

[0013] The transceiver module is further configured to receive an SSB sent by the network device after a first time, wherein the first time is a time when the terminal receives the first information, and the SSB is at least used for activating the SCell.

[0014] In a fourth aspect, an embodiment of the present disclosure provides a network device, comprising:

[0015] a transceiver module configured to send first information to a terminal, wherein the first information is used for triggering an on-demand synchronization signal block (OD SSB) of a secondary cell (SCell).

[0016] The transceiver module is further configured to send an SSB to the terminal after a first time, wherein the first time is a time when the first information is sent, and the SSB is at least used for activating the SCell.

[0017] In a fifth aspect, an embodiment of the present disclosure provides a communication device, comprising:

[0018] one or more processors;

[0019] The communication device is configured to implement the method in the first aspect or the second aspect.

[0020] In a sixth aspect, an embodiment of the present disclosure provides a communication system, comprising a terminal and a network device, wherein:

[0021] The terminal is configured to implement the method in the first aspect;

[0022] The network device is configured to implement the method in the second aspect.

[0023] In a seventh aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, and when the instructions are run on a communication device, the communication device executes the method in the first aspect or the second aspect.

[0024] The instructions, when run on the communication device, cause the communication device to execute the method in the first aspect or the second aspect.

[0025] In an eighth aspect, an embodiment of the present disclosure provides a program product, wherein the program product stores instructions, and when the program product is executed by a communication device, the communication device executes the method in the first aspect or the second aspect.

[0026] The program product, when executed by the communication device, causes the communication device to execute the method in the first aspect or the second aspect.

[0027] In an embodiment of the present disclosure, in the NES scenario of the OD SSB, the terminal can receive the SSB within a suitable time range according to the time when the first information triggering the OD SSB is received, so as to ensure that the related operation such as the SCell activation can still be normally performed in the NES scenario. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following describes the drawings required for the embodiments, and the following drawings are only some embodiments of the present disclosure, and do not specifically limit the protection scope of the present disclosure.

[0029] FIG. 1a is an exemplary schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure;

[0030] FIG. 1b is a schematic diagram of Scell activation according to an embodiment of the present disclosure;

[0031] FIGS. 2a-2b are an exemplary interactive schematic diagram of a method according to an embodiment of the present disclosure;

[0032] FIGS. 2c-2d are a schematic diagram of Scell activation according to an embodiment of the present disclosure;

[0033] FIGS. 3a-3d are an exemplary flowchart of a method according to an embodiment of the present disclosure;

[0034] FIG. 4 is an exemplary flowchart of a method according to an embodiment of the present disclosure;

[0035] FIG. 5a is a structural schematic diagram of a device according to an embodiment of the present disclosure;

[0036] FIG. 5b is a structural schematic diagram of a device according to an embodiment of the present disclosure;

[0037] FIG. 6a is a schematic diagram of a communication device according to an embodiment of the present disclosure;

[0038] FIG. 6b is a schematic diagram of a communication device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0039] The embodiments of the present disclosure provide a communication method, a terminal, a network device and a storage medium.

[0040] In a first aspect, the embodiments of the present disclosure provide a communication method, executed by a terminal, comprising:

[0041] receiving first information sent by a network device, the first information being used to trigger an on-demand request of a synchronization signal block (OD SSB) of a secondary cell (SCell);

[0042] receiving an SSB sent by the network device after a first time, wherein the first time is a time when the terminal receives the first information, and the SSB is at least used to activate the SCell.

[0043] In the above embodiments, in the NES scenario of the ODS SB, the terminal can receive the SSB within a suitable time range according to the time of triggering the first information of the ODS SB, so as to ensure that the related operation such as SCell activation can still be normally performed in the NES scenario.

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

[0045] receiving second information sent by the network device, the second information being used to indicate activation of the SCell;

[0046] sending an acknowledgement (ACK) to the network device.

[0047] In combination with the embodiments of the first aspect, in some embodiments, the SCell is a timing information known secondary cell.

[0048] In combination with the embodiments of the first aspect, in some embodiments, the first SSB is located before the second time after the first time.

[0049] In combination with the embodiments of the first aspect, in some embodiments, the time window [the first time, the second time] includes a plurality of SSBs, and the SSB sent by the network device after the first time is received, including:

[0050] receiving an SSB sent by the network device at a third time, wherein the third time is within the time window and has the minimum interval from the second time.

[0051] In combination with the embodiments of the first aspect, in some embodiments, the second time is determined according to a protocol definition or a parameter configured by the network device.

[0052] In combination with the embodiments of the first aspect, in some embodiments, the second time t2 is:

[0053] t2 = n + T1 + margin, wherein n is the time at which the network device sends the second information, T1 is determined based on a plurality of constants, margin is a parameter depending on the implementation of the network device, and margin is defined by the protocol or configured by the network device.

[0054] In combination with the embodiments of the first aspect, in some embodiments, the method further includes:

[0055] performing an operation of activating the SCell before the activation delay time, wherein the activation delay time t3 satisfies:

[0056] t3 = n + T1, or

[0057] wherein T activation_time determined according to a constant T3, or Tactivation_time The value is determined by a*Trs, where a is greater than or equal to 1; Trs is the SMTC period, and NR slot length is the time slot length of NR.

[0058] In conjunction with the embodiments of the first aspect, in some embodiments, SCell is a secondary cell whose timing information is known or unknown.

[0059] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0060] Receive third information sent by the network device. The third information is used to instruct the terminal to receive the time information of the SSB.

[0061] In conjunction with the embodiments of the first aspect, in some embodiments, the time information includes: the time interval k between the SSB reception time and the second information transmission time n.

[0062] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0063] Based on the third piece of information, determine the SSB reception time.

[0064] In conjunction with the embodiments of the first aspect, in some embodiments, the method further includes:

[0065] The operation to activate the SCell is performed before the activation delay time t3, where the activation delay time t3 satisfies:

[0066] t3=n+k+T HARQ +T4; or,

[0067] Among them, T HARQ T4 is the time for the terminal to send the ACK, which is determined based on the time domain information of the reference signal configured by the network device, and T5 is determined based on the time domain information of the reference signal configured by the network device and / or the result reported.

[0068] Secondly, embodiments of this disclosure provide a communication method executed by a network device, the method comprising:

[0069] Send first information to the terminal, the first information being used to trigger the on-demand request synchronization signal block OD SSB of the secondary cell SCell;

[0070] The SSB sent to the terminal after the first time, where the first time is the time when the first information is sent, is used at least to activate the SCell.

[0071] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0072] transmitting second information to the terminal, the second information being used to indicate activating the SCell;

[0073] receiving an acknowledgement feedback ACK transmitted by the terminal.

[0074] In combination with the embodiments of the second aspect, in some embodiments, the SCell is a timing information known secondary cell.

[0075] In combination with the embodiments of the second aspect, in some embodiments, the first SSB is located after the first time and before the second time.

[0076] In combination with the embodiments of the second aspect, in some embodiments, the multiple SSBs within the time window [the first time, the second time] include:

[0077] transmitting the SSB to the terminal at a third time, wherein the third time is within the time window and has the minimum distance to the second time.

[0078] In combination with the embodiments of the second aspect, in some embodiments, the second time is determined according to a protocol definition or a network device configured parameter.

[0079] In a third aspect, the embodiments of the present disclosure provide a terminal, comprising:

[0080] a transceiver, configured to receive first information transmitted by a network device, the first information being used to trigger an on-demand request synchronization signal block (OD SSB) of a secondary cell (SCell);

[0081] The transceiver is further configured to receive an SSB transmitted by the network device after a first time, wherein the first time is a time when the terminal receives the first information, and the SSB is at least used to activate the SCell.

[0082] In a fourth aspect, the embodiments of the present disclosure provide a network device, comprising:

[0083] a transceiver, configured to transmit first information to a terminal, the first information being used to trigger an on-demand request synchronization signal block (OD SSB) of a secondary cell (SCell);

[0084] The transceiver is further configured to transmit an SSB to the terminal after a first time, wherein the first time is a time when the first information is transmitted, and the SSB is at least used to activate the SCell.

[0085] In a fifth aspect, the embodiments of the present disclosure provide a communication device, comprising:

[0086] one or more processors;

[0087] The communication device is configured to implement the method of the first aspect or the second aspect.

[0088] In a sixth aspect, the embodiments of the present disclosure provide a communication system, comprising a terminal and a network device, wherein,

[0089] The terminal is configured to implement the method of the first aspect;

[0090] The network device is configured to implement the method of the second aspect.

[0091] In a seventh aspect, the embodiments of the present disclosure provide a storage medium, wherein the storage medium stores instructions.

[0092] When the instructions run on the communication device, the communication device executes the method of the first aspect or the second aspect.

[0093] In an eighth aspect, the embodiments of the present disclosure provide a program product, wherein

[0094] When the program product is executed by the communication device, the communication device executes the method of the first aspect or the second aspect.

[0095] In a ninth aspect, the embodiments of the present disclosure provide a computer program, which, when running on a computer, causes the computer to execute the method described in the optional implementation manners of the first aspect and the second aspect.

[0096] In a tenth aspect, the embodiments of the present disclosure provide a chip or a chip system. The chip or the chip system comprises processing circuitry configured to execute the method described in the above first aspect and the second aspect and the optional implementation manners thereof.

[0097] It can be understood that the above terminal, storage medium, program product, computer program, chip or chip system are all used to execute the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved thereby can refer to the beneficial effects in the corresponding method, which will not be described here again.

[0098] The embodiments of the present disclosure are not exhaustive, but only illustrate some embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing some steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation manners in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, the steps of different embodiments or all steps of different embodiments can be combined arbitrarily, an embodiment can be combined with the optional implementation manners of other embodiments.

[0099] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0100] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0101] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0102] In the embodiments disclosed herein, "multiple" refers to two or more.

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

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

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

[0106] The prefix words of "first", "second" and the like in the embodiments of the present disclosure are merely used to distinguish different description objects, and do not constitute limitation on the position, order, priority, quantity or content of the description objects. The description objects are described in the claims or embodiments in the context of the description, and should not be construed as redundant limitation because of the use of the prefix words. For example, the description object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or order between "fields", and "first" and "second" do not limit whether the "fields" modified thereby are in the same message or not, nor limit the order of "first field" and "second field". For another example, the description object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description object is not limited by the ordinal words, and can be one or more. For example, "first device", wherein the quantity of "device" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the description object is "device", and "first device" and "second device" can be the same device or different devices, and the types thereof can be the same or different; for another example, the description object is "information", and "first information" and "second information" can be the same information or different information, and the contents thereof can be the same or different.

[0107] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0108] In some embodiments, the terms of "in response to", "in response to determining", "in the case of", "when", "when", "if", "if" and the like can be replaced with each other.

[0109] In some embodiments, the terms of "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", "above" and the like can be replaced with each other, and the terms of "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", "below" and the like can be replaced with each other.

[0110] In some embodiments, the apparatuses and devices can be interpreted as entities, and also as virtual, whose names are not limited to the names described in the embodiments, and in some cases can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", and the like.

[0111] In some embodiments, "network" can be interpreted as an apparatus contained in the network, for example, an access network device, a core network device, and the like.

[0112] In some embodiments, "access network device (AN device)" can also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments can also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", and the like.

[0113] In some embodiments, a "terminal" or "terminal device" can be referred to as a "user equipment" (UE), a "user terminal," a "mobile station" (MS), a "mobile terminal" (MT), a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, and / or the like.

[0114] In some embodiments, data, information and / or the like can be obtained in compliance with laws and regulations of a country where the data, information and / or the like is obtained.

[0115] In some embodiments, data, information and / or the like can be obtained after consent of a user is obtained.

[0116] In addition, each element, each row, or each column in a table of embodiments of the present disclosure can be implemented as an independent embodiment, and a combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0117] FIG. 1a is an architecture diagram of a communication system, according to embodiments of the present disclosure.

[0118] As shown in FIG. 1a, a communication system 100 includes a terminal 101 and a network device 102.

[0119] In some embodiments, the terminal 101 includes at least one of a mobile phone, a wearable device, an Internet of Things device, a communication-capable automobile, a smart automobile, a tablet (Pad), a wireless transceiver-equipped computer, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, and the like, but is not limited thereto.

[0120] In some embodiments, the network device 102 can include at least one of an access network device and a core network device.

[0121] In some embodiments, the access network device is at least one of a node or a device that accesses a terminal to a wireless network, for example, and can include at least one of an evolved NodeB (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an Open RAN, a Cloud RAN, a base station in other communication systems, an access node in a wireless fidelity (WiFi) system, and the like, but is not limited thereto.

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

[0123] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), where the CU can also be referred to as a control unit. The CU-DU structure can split the protocol layers of the access network device, with part of the protocol layer functions being controlled by the CU, and the remaining part or all of the protocol layer functions being distributed in the DU and controlled by the CU. However, the present disclosure is not limited thereto.

[0124] In some embodiments, the core network device can be one device including one or more network elements, or can be multiple devices or device groups including all or part of one or more network elements. The network element can be virtual or physical. The core network includes at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next-generation core (NGC), for example. Alternatively, the core network device refers to a network element with specific functions, such as an access management function (AMF) and a service management function (SMF).

[0125] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. Those skilled in the art can know that, as the system architecture evolves and new business scenarios appear, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0126] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1a or part of the subject, but are not limited thereto.

[0127] The subjects shown in FIG. 1a are examples. The communication system can include all or part of the subjects in FIG. 1a, or other subjects other than those in FIG. 1a. The number and form of each subject is arbitrary. The connection relationship between each subject is an example. Each subject can be connected or not connected. The connection can be in any manner, can be direct connection or indirect connection, and can be wired connection or wireless connection.

[0128] Embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), system using other communication processing methods, next-generation system expanded based on them, and the like. In addition, a plurality of systems can be applied in combination (for example, combination of LTE or LTE-A and 5G, and the like).

[0129] In Release 19 (R19), in order to achieve network energy saving (NES), a user equipment (UE) in a connected mode can be configured to support on-demand request of signals in a carrier aggregation (CA) scenario, such as an OD-SSB SCell operation. In the OD-SSB, the UE can request the network side when SSB is needed, and the network side sends SSB according to the request of the UE, so as to reduce the sending of SSB by the network device, thereby achieving network energy saving.

[0130] The SSB of the OD SSB SCell is not always sent, and in the SCell activation procedure, the SSB can be not available. In combination with FIG. 1b, an example of SCell activation with unknown frequency range (Frequency Range 1, FR1) timing information is shown. After the UE receives the SCell activation command at slot n, the SCell activation procedure is started. If the SSB of the SCell has not been sent after the UE receives the activation command, the activation procedure of the UE will be affected, and the total SCell activation delay will be prolonged.

[0131] Under the premise of achieving NES to save network energy in the OD SSB scenario, the behavior of the UE needs to be determined.

[0132] FIG. 2a is an interaction schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 2a, the present disclosure relates to a communication method, and the method comprises:

[0133] In step S2101, the network device 102 sends first information to the terminal 101.

[0134] In some embodiments, the first information is used to trigger an on-demand request of a synchronization signal block (OD SSB) of a secondary cell (SCell), such as an OD SSB trigger command.

[0135] In some embodiments, for the OD SSB of NES, there is no always-on SSB on the cell.

[0136] In some embodiments, the network device 102 can send the first information at a first time. The terminal 101 receives the first information at the first time. The first time can be an absolute time, a slot, a symbol, etc. The embodiments of the present disclosure take the slot as an example. As shown in FIG. 2c, the network device 102 sends the first information at slot t0, and the terminal 101 receives the first information at slot t0.

[0137] In some embodiments, the terminal 101 receives the first information. Based on the trigger, the terminal 101 can perform the ODS SB-related operation, such as requesting the SSB of the SCell.

[0138] Step S2102, the network device 102 sends the second information to the terminal 101.

[0139] In some embodiments, the second information is used to indicate the activation of the SCell, such as the second information being an activation command (SCell activation command).

[0140] In some embodiments, the network device 102 can send the SCell activation command through a media access control layer control unit (MAC CE).

[0141] In some embodiments, as shown in FIG. 2c, the network device 102 can send the second information, i.e., the SCell activation command, at slot n. The terminal 101 can receive the SCell activation command at slot n.

[0142] In some embodiments, after the terminal 101 receives the SCell activation command at slot n, the terminal 101 can process the SCell activation command, such as decoding the SCell activation command (Dec MAC CE). Exemplarily, the time for the terminal 101 to process the SCell activation command can be 3 milliseconds (ms).

[0143] Step S2103, the terminal 101 sends an acknowledgement feedback ACK to the network device 102.

[0144] In some embodiments, after receiving the SCell activation command, the terminal 101 can feed back to the network device 102.

[0145] In some embodiments, as shown in FIG. 2c, the terminal 101 can send the ACK at slot n+T HARQ

[0146] ​In some embodiments, after receiving the SCell activation command or after sending the ACK, the terminal 101 can start the SCell activation procedure.

[0147] In step S2104, the terminal 101 determines the reception time of the SSB.

[0148] In some embodiments, for the activation of known or unknown secondary cells, the terminal 101 can receive the SSB or determine the activation delay by different methods.

[0149] In some embodiments, in the SCell activation procedure, if the SCell in FR1 meets the following conditions, the SCell is known:

[0150] Before receiving the SCell activation command, during max(5*measCycleSCell, 5*DRX cycle) of FR1:

[0151] The UE has sent a valid measurement report for the activated SCell, and

[0152] Based on the protocol-defined cell identification condition, the measured SSB is still detectable.

[0153] Otherwise, the SCell in FR1 is unknown.

[0154] Wherein, measCycleSCell is the SCell measurement cycle, and DRX cycle is the cycle of discontinuous reception (DRX) configured by the network.

[0155] In some embodiments, the embodiments of the present disclosure take the secondary cell whose timing information is known as an example for description.

[0156] In some embodiments, for the scenario of OD SSB, the terminal 101 needs to determine the reception time of the valid SSB, and then perform relevant operations based on the received SSB, such as performing the SCell activation procedure.

[0157] In some embodiments, the terminal 101 determines the time of receiving the SSB according to the first time and the second time.

[0158] In some embodiments, the first SSB is located before the second time after the first time.

[0159] In this embodiment, the first time is the time when the network device 102 sends the first information or the terminal 101 receives the first information. Referring to the example in Figure 2c, the first time can be slot t0 or denoted as t0.

[0160] In this embodiment, the second time is determined based on parameters defined by the protocol or configured by the network device.

[0161] In one example, the second time t2 is:

[0162] t2 = n + T1 + margin, where n is the time when the network device sends the second information, T1 is determined based on multiple constants, and margin is a parameter that depends on the implementation of the network device. Margin is defined by the protocol or configured by the network device.

[0163] Among them, T1 can satisfy: T1 = T HARQ +5ms+T firstSSB Then t2 = n + T HARQ +5ms+T firstSSB +margin. Referring to Figure 2c, T FirstSSB It is n+T indicated by the SSB Measurement Timing Configuration (SMTC). HARQ The time of the first SSB after +3ms.

[0164] Terminal 101 can perform SCell activation based on the requirements defined by the relevant protocol when the first SSB for SCell activation is prior to the second time.

[0165] In some embodiments, a plurality of SSBs are included within a time window [a first time, a second time], and terminal 101 can determine to receive an SSB for secondary cell activation at a third time.

[0166] In this embodiment, the first time is the time when the network device 102 sends the first information or the terminal 101 receives the first information. Referring to the example in Figure 2c, the first time can be slot t0 or denoted as t0.

[0167] In this embodiment, the second time is determined based on parameters defined by the protocol or configured by the network device.

[0168] In one example, the second time t2 is: t2 = n + T1 + margin, where the parameters can be found in the description of the previous example, for example, t2 = n + T HARQ +5ms+T firstSSB +margin.

[0169] If within the time window [t0, n+T]HARQ + 5ms + T firstSSB + margin], the network device 102 can only send the SSB at the third time. Thus, the terminal 101 can receive the SSB at the third time in step S2105.

[0170] Wherein, the third time is within the time window, and the distance to the second time is minimum. Namely, the network device 102 can only send the SSB of the Scell closer to the end of the time window, to save power consumption more.

[0171] Step S2105, the network device 102 sends the SSB to the terminal 101 after the first time.

[0172] In some embodiments, the SSB sent by the network device 102 is at least used for activating the SCell.

[0173] In some embodiments, the terminal 101 can receive the SSB sent by the network device 102.

[0174] In some embodiments, in combination with the description of step S2104, there is only one SSB before the second time, the terminal 101 receives the first valid SSB before the second time based on the second time, for SCell activation.

[0175] Or, in the time window between the first time and the second time, there are multiple SSBs, and the terminal 101 can receive the SSB at the third time closest to the second time, for SCell activation.

[0176] Step S2106, the terminal 101 performs the operation of activating the SCell before the activation delay time (Scell activation delay) t3.

[0177] In some embodiments, in combination with the description of FIG. 2c, for the known SCell activation, the operation of the terminal 101 in the activation process can include: radio frequency chain (RF chain) warm-up, channel state information (CSI) reporting, etc. Wherein, the RF chain warm-up can require 2ms, the CSI reporting can report the channel quality indicator (CQI), and the SCell offloading can be performed after the SCell activation is completed.

[0178] In some embodiments, the activation delay time t3 satisfies:

[0179] t3 = n + T1, or,

[0180] wherein T activation_time According to the constant T3, or T activation_time According to a*Trs, a is greater than or equal to 1; Trs is the SMTC period, and NR slot length is the slot length of NR.

[0181] wherein T1 = T HARQ + 5ms + T firstSSB t3 can satisfy: t3 = n + T HARQ + 5ms + T firstSSB .

[0182] In this embodiment, T2 can satisfy: T2 = T HARQ + T CSI_Reporting , T3 = T firstSSB + 5ms, t3 can satisfy:

[0183] wherein if the SCell is known and belongs to FR1, T activation_time may be:

[0184] T FirstSSB + 5ms, if the measurement period of the activated SCell is equal to or less than 2400 milliseconds;

[0185] T FirstSSB_MAX + T rs + 5ms, if the measurement period of the activated SCell is greater than 2400 milliseconds.

[0186] Or, in the case of OD SSB, if there is more than one SSB within the time window [t0, n + T HARQ + 5ms + T firstSSB + margin], the requirement for T activation_time may be at least 1 Trs longer.

[0187] In some embodiments, the names of information and the like are not limited to the names described in the embodiments, and the terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", and the like can be replaced with each other.

[0188] In some embodiments, "acquire", "obtain", "get", "receive", "transmit", "bidirectionally transmit", "send and / or receive" can be replaced with each other, which can be interpreted as receiving from other subjects, acquiring from protocols, acquiring from higher layers, obtaining by self-processing, implementing autonomously, and the like.

[0189] In some embodiments, the terms "send", "transmit", "report", "issue", "transmit", "bidirectionally transmit", "send and / or receive", and the like can be replaced with each other.

[0190] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based", and the like can be replaced with each other.

[0191] In some embodiments, the terms "time", "time point", "time point", "time position", and the like can be replaced with each other, and the terms "time length", "time period", "time window", "window", "time", and the like can be replaced with each other.

[0192] In some embodiments, the terms "component carrier (CC)", "cell", "frequency carrier", "carrier frequency", and the like can be replaced with each other.

[0193] In some embodiments, the terms "certain", "preset", "pre-set", "set", "indicated", "certain", "arbitrary", "first", and the like can be replaced with each other, and "certain A", "preset A", "pre-set A", "set A", "indicated A", "certain A", "arbitrary A", "first A" can be interpreted as A specified in advance in protocols and the like, or A obtained by setting, configuring, or indicating, or A specified as certain A, certain A, arbitrary A, or first A, but not limited thereto.

[0194] In some embodiments, determination or judgment can be made 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 not limited thereto.

[0195] In some embodiments, "not expecting to receive" can be interpreted as not receiving on the time domain resource and / or the frequency domain resource, or can be interpreted as, after receiving the data, etc., not performing subsequent processing on the data, etc.; "not expecting to send" can be interpreted as not sending, or can be interpreted as sending but not expecting the receiving party to respond to the content of the sending.

[0196] The method related to the embodiments of the present disclosure can include at least one of steps S2101-S2106.

[0197] In some embodiments, step S2102 is optional and can be replaced by one or more steps in different embodiments.

[0198] In some embodiments, step S2103 is optional and can be replaced by one or more steps in different embodiments.

[0199] In some embodiments, step S2104 is optional and can be replaced by one or more steps in different embodiments.

[0200] In some embodiments, step S2106 is optional and can be replaced by one or more steps in different embodiments.

[0201] In some embodiments, other optional implementations described before or after the description corresponding to FIG. 2a can be referred to.

[0202] In the embodiments of the present disclosure, in the OD SSB scenario, for the activation of the known SCell, after the OD SSC is triggered, the terminal 101 can receive the SSB for activating the SCell within a suitable time range based on the first time and the second time, so that the secondary cell activation process can be completed in time on the basis of network energy saving, and the influence of OD SSB on the activation delay is minimized.

[0203] FIG. 2b is an interaction schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 2b, the embodiment of the present disclosure relates to a communication method, and the above method includes:

[0204] In step S2201, the network device 102 sends first information to the terminal 101.

[0205] In some embodiments, the implementation of step S2201 can refer to the implementation of step S2101 in FIG. 2a, and details are not repeated here.

[0206] In step S2202, the network device 102 sends second information to the terminal 101.

[0207] In some embodiments, the implementation of step S2202 can refer to the implementation of step S2102 in FIG. 2a, and details are not repeated here.

[0208] Step S2203, the terminal 101 sends the acknowledgement feedback ACK to the network device 102.

[0209] In some embodiments, the implementation of step S2203 can refer to the implementation of step S2103 in FIG. 2a, which will not be described here.

[0210] Step S2204, the network device 102 sends the third information to the terminal 101.

[0211] In some embodiments, the third information is used to indicate the time information of receiving the SSB by the terminal 101.

[0212] In some embodiments, in combination with FIG. 2d, the time information includes: the time interval k between the receiving time of the SSB and the sending time n of the second information. Wherein, k can be a time slot or a time length.

[0213] In some embodiments, the terminal 101 receives the third information, and can perform step S2205.

[0214] Step S2205, the terminal 101 determines the receiving time of the SSB according to the third information.

[0215] In some embodiments, the operation of the terminal 101 in the process of activating the SCell is different for the known or unknown secondary cell.

[0216] Wherein, whether the SCell is known can refer to the implementation of step S2104 in FIG. 2a, which will not be described here.

[0217] In some embodiments, the embodiments of the present disclosure can be applied to the secondary cell whose SCell is known or unknown timing information. FIG. 2c corresponds to an example described by taking the unknown secondary cell as an example.

[0218] Optionally, if the indication information indicates k, the terminal 101 can receive the SSB for activating the SCell at the position interval k after slot n on the basis of slot n.

[0219] Step S2206, the network device 102 sends the SSB to the terminal 101 after the first time.

[0220] In some embodiments, the terminal 101 can receive the SSB sent by the network device 102 at a suitable position after the first time based on the indication information, for the SCell activation process.

[0221] Step S2207, the terminal 101 performs the operation of activating the SCell before the activation delay time t3.

[0222] In some embodiments, taking the unknown SCell activation as an example in combination with FIG. 2d, the operation of the terminal 101 in the activation process can include RF chain preheating, primary synchronization signal (PSS) or secondary synchronization signal (SSS) timing synchronization, automatic gain control (AGC), CSI reporting, and the like. Among them, the RF chain preheating can require 2ms, the cell search can require 1 SMTC period (T SMTC ), the AGC can require 2T SMTC , and 1T SMTC is also required.

[0223] In some embodiments, the activation delay time t3 satisfies:

[0224] t3 = n + k + T HARQ + T4; or,

[0225] Wherein, T HARQ is the time for the terminal to send ACK, T4 is determined according to the time domain information of the reference signal configured by the network device, and T5 is determined according to the time domain information of the reference signal and / or result reporting configured by the network device.

[0226] In this embodiment, T4 can satisfy: T4 = T FirstSSB_MAX + T SMTC_MAX + 2*T rs + 5ms; and t3 can satisfy:

[0227] t3 = n + k + T HARQ + T FirstSSB_MAX + T SMTC_MAX + 2*T rs + 5ms, that is, the terminal 101 can complete the SCell activation process before "n + k + T HARQ + T FirstSSB_MAX + T SMTC_MAX + 2*T rs + 5ms".

[0228] In this embodiment, T5 can satisfy: T5 = T activation_time + T CSI_Reporting ; and t3 can satisfy:

[0229] That is, the terminal 101 can complete the SCell activation procedure before the t3.

[0230] wherein, if the SCell is known and belongs to FR1, T activation_time is:

[0231] T FirstSSB + 5ms, if the measurement period of the activated SCell is equal to or smaller than 2400 ms;

[0232] T FirstSSB_MAX + T rs + 5ms, if the measurement period of the activated SCell is larger than 2400 ms.

[0233] If the SCell is unknown and belongs to FR1, and one of the following conditions is met:

[0234] “ssb-PositionInBurst” indicates that actually only one ssb is being transmitted, or

[0235] “ssb-PositionInBurst” indicates multiple ssbs, and the TCI indication is provided in the same MAC PDU as the SCell activation command;

[0236] Assuming that the side condition signal-to-noise ratio T activation_time is:

[0237] T FirstSSB_MAX + T SMTC_MAX + T rs + 5ms, if the following conditions are met:

[0238] the SCell is contiguous to an activated serving cell in the same band, and

[0239] its ssb-PositionInBurst is the same as the SSB-positioninburst of the contiguous FR1 activated serving cell, and

[0240] its SMTC offset is the same as the offset of the contiguous FR1 activated serving cell, and

[0241] its RTD to the contiguous FR1 activated serving cell is less than or equal to 260 ns with respect to the SSB numerology of the SCell to be activated, and its received power difference to the contiguous FR1 activated serving cell is less than or equal to 6 dB.

[0242] Otherwise, T activation_time is: T FirstSSB_MAX + T SMTC_MAX + 2*T rs + 5ms.

[0243] The method related to the embodiments of the present disclosure can include at least one of steps S2201-S2207.

[0244] In some embodiments, at least one of steps S2205-S2207 is optional, and in different embodiments, can be replaced by one or more steps.

[0245] In some embodiments, step S2202 is optional, and in different embodiments, can be replaced by one or more steps.

[0246] In some embodiments, step S2203 is optional, and in different embodiments, can be replaced by one or more steps.

[0247] In some embodiments, other optional implementations described before or after the corresponding description of FIG. 2b can be referred to.

[0248] In the embodiments of the present disclosure, in the OD SSB scenario, for the activation of the known or located SCell, after the OD SSC is triggered, the terminal 101 can receive the SSB for activating the SCell at the appropriate time based on the indication of the network device, so that the secondary cell activation process can be completed in time on the basis of network energy saving, and the influence of OD SSB on activation delay is minimized.

[0249] FIG. 3a is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 3a, the present disclosure relates to a communication method, which is performed by a terminal 101, and the above method comprises:

[0250] Step S3101, receiving first information.

[0251] In some embodiments, the implementation of step S3101 can refer to the implementation of step S2101 in FIG. 2a, which will not be repeated here.

[0252] Step S3102, receiving second information.

[0253] In some embodiments, the implementation of step S3102 can refer to the implementation of step S2102 in FIG. 2a, which will not be repeated here.

[0254] Step S3103, sending an acknowledgement feedback ACK.

[0255] In some embodiments, the implementation of step S3103 can refer to the implementation of step S2103 in FIG. 2a, and details are not described herein again.

[0256] Step S3104, receiving third information.

[0257] In some embodiments, the implementation of step S3104 can refer to the implementation of step S2204 in FIG. 2b, and details are not described herein again.

[0258] Step S3105, receiving SSB after the first time.

[0259] In some embodiments, the implementation of step S3105 can refer to the implementation of steps S2104-S2105 in FIG. 2a, and details are not described herein again.

[0260] In some embodiments, the implementation of step S3105 can refer to the implementation of steps S2205-S2206 in FIG. 2b, and details are not described herein again.

[0261] Step S3106, performing an operation of activating the SCell before the activation delay time t3.

[0262] In some embodiments, the implementation of step S3106 can refer to the implementation of step S2106 in FIG. 2a, and details are not described herein again.

[0263] In some embodiments, the implementation of step S3106 can refer to the implementation of step S2207 in FIG. 2b, and details are not described herein again.

[0264] The method related to the embodiments of the present disclosure can include at least one of steps S3101-S3107.

[0265] In some embodiments, other optional implementations can be described before or after the corresponding description of FIG. 3a.

[0266] FIG. 3b is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3b, the embodiment of the present disclosure relates to a communication method, which is performed by a terminal 101, and the above method includes:

[0267] Step S3201, receiving first information.

[0268] In some embodiments, the implementation of step S3201 can refer to the implementation of step S2101 in FIG. 2a, and details are not described herein again.

[0269] Step S3202, receiving second information.

[0270] In some embodiments, the implementation of step S3202 can refer to the implementation of step S2102 in FIG. 2a, and details are not described herein again.

[0271] Step S3203, receiving the SSB after the first time.

[0272] In some embodiments, the implementation of step S3203 can refer to the implementation of steps S2104-S2105 in FIG. 2a, and details are not described herein again.

[0273] In some embodiments, the implementation of step S3203 can refer to the implementation of steps S2205-S2206 in FIG. 2b, and details are not described herein again.

[0274] In some embodiments, other optional implementations can be referred to the description before or after the description corresponding to FIG. 3b.

[0275] FIG. 3c is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3c, the embodiment of the present disclosure relates to a communication method, which is performed by the terminal 101, and the above method comprises:

[0276] Step S3301, receiving the first information.

[0277] In some embodiments, the implementation of step S3301 can refer to the implementation of step S2101 in FIG. 2a, and details are not described herein again.

[0278] Step S3302, performing the operation of activating the SCell before the activation delay time t3.

[0279] In some embodiments, the implementation of step S3302 can refer to the implementation of step S2106 in FIG. 2a, and details are not described herein again.

[0280] In some embodiments, the implementation of step S3302 can refer to the implementation of step S2207 in FIG. 2b, and details are not described herein again.

[0281] In some embodiments, other optional implementations can be referred to the description before or after the description corresponding to FIG. 3c.

[0282] FIG. 3d is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3c, the embodiment of the present disclosure relates to a communication method, which is performed by the terminal 101, and the above method comprises:

[0283] Step S3401, receiving the first information.

[0284] In some embodiments, the implementation of step S3401 can refer to the implementation of step S2101 in FIG. 2a, which will not be repeated here.

[0285] Step S3402, receiving the SSB after the first time.

[0286] In some embodiments, the implementation of step S3402 can refer to the implementation of steps S2104-S2105 in FIG. 2a, which will not be repeated here.

[0287] In some embodiments, the implementation of step S3402 can refer to the implementation of steps S2205-S2206 in FIG. 2b, which will not be repeated here.

[0288] In some embodiments, other optional implementations can be referred to the description before or after the corresponding description of FIG. 3d.

[0289] FIG. 4 is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4, the embodiment of the present disclosure relates to a communication method, which is performed by the network device 102, and the above method comprises:

[0290] Step S4101, transmitting first information.

[0291] In some embodiments, the implementation of step S4101 can refer to the implementation of step S2101 in FIG. 2a, which will not be repeated here.

[0292] Step S4102, transmitting second information.

[0293] In some embodiments, the implementation of step S4102 can refer to the implementation of step S2102 in FIG. 2a, which will not be repeated here.

[0294] Step S4103, receiving an acknowledgement feedback ACK.

[0295] In some embodiments, the implementation of step S4103 can refer to the implementation of step S2103 in FIG. 2a, which will not be repeated here.

[0296] Step S4104, transmitting third information.

[0297] In some embodiments, the implementation of step S4104 can refer to the implementation of step S2204 in FIG. 2b, which will not be repeated here.

[0298] Step S4105, transmitting the SSB after the first time.

[0299] In some embodiments, the implementation of step S4105 can refer to the implementation of steps S2104-S2105 in FIG. 2a, which will not be repeated here.

[0300] In some embodiments, the implementation of step S4105 can refer to the implementation of steps S2205-S2206 in FIG. 2b, which will not be repeated here.

[0301] The method related to the embodiments of the present disclosure can include at least one of steps S4101-S4105.

[0302] In some embodiments, reference can be made to other optional implementations described before or after the corresponding description of FIG. 4, such as the embodiments with reference to FIG. 2a or FIG. 2b.

[0303] The embodiments of the present disclosure provide the behavior of UE activating SCell in ODS SB scenario, so as to minimize the SCell activation delay on the premise of saving network power. In NES, two scenarios can be included, denoted as:

[0304] Scenario 2: UE is configured with SCell before receiving SCell activation command;

[0305] Scenario 3: UE receives SCell activation command after.

[0306] There are two cases for SSB:

[0307] Case 1: There is no always-on or always-transmitted SSB on the cell;

[0308] Case 2: There is always-on SSB periodically transmitted on the cell.

[0309] Based on scenario 2, the embodiments of the present disclosure provide the following two embodiments:

[0310] Embodiment 1:

[0311] This embodiment 1 is based on scenario 2+case 1, and is for known Scell.

[0312] In the SCell activation process, if the SCell in FR1 meets the following conditions, the SCell is known:

[0313] Before receiving the SCell activation command, during max(5*measCycleSCell, 5*DRX cycle) in FR1:

[0314] The UE has sent a valid measurement report for the activated SCell, and

[0315] The measured SSB is still detectable based on the protocol defined cell identification condition.

[0316] Otherwise, the SCell in FR1 is unknown.

[0317] In this embodiment 1, in combination with Figure 2c, the following two observations can be referred to:

[0318] (1) For the case of known SCell activation, if the first SSB sent after the OD SSB trigger command can be located before the time “n+T HARQ +5ms+T firstSSB +margin”, the UE can follow the current behavior for SCell activation.

[0319] (2) If there are more than one SSB within the time window [t0, n+T HARQ +5ms+T firstSSB +margin], in order to save more power, the gNB only needs to forward the SSB of the SCell closer to the end of the window, which can depend on the network (NW) implementation.

[0320] Based on (1) or (2), for SCell Activation and Deactivation Delay:

[0321] Introduction:

[0322] Within a defined delay, the UE shall be able to activate an Evolved Universal Terrestrial Radio Access Network and New Radio Dual Connectivity (E-UTRAN New Radio Dual Connectivity, EN-DC), in standalone NR carrier aggregation, New Radio and 4G Radio Access Network Dual Connectivity (NR eNB Dual Connection, NE-DC), or NR Dual Connectivity (DC) deactivated SCell.

[0323] SCell Activation Delay Requirement for Deactivated SCell:

[0324] This requirement applies to UEs configured with one downlink SCell in EN-DC, in standalone NR carrier aggregation, NE-DC, or NR-DC, and in case one SCell is activated.

[0325] The delay for the UE to be able to activate a deactivated SCell depends on specified conditions.

[0326] When receiving the SCell activation command in slot n, the UE shall be able to send a valid CSI report and apply the operation related to the activation command for the activated SCell no later than in the following slots:

[0327] Where:

[0328] T HARQ (ms) is the time between downlink data (DL data) transmission and acknowledgement feedback.

[0329] T activation_time is the SCell activation delay (ms);

[0330] If the SCell is known and belongs to FR1, T activation_time is:

[0331] T FirstSSB + 5 ms, if the measurement period of the activated SCell is equal to or smaller than 2400 milliseconds;

[0332] T FirstSSB_MAX + T rs+ 5ms if the measurement period of the activated SCell is greater than 2400 ms.

[0333] Note 1: In case of OD SSB, the first SSB sent after the OD SSB trigger command can be located at time “n + T HARQ + 5ms + T firstSSB + margin” before.

[0334] Note 2: In case of OD SSB, if there is more than one SSB within the time window [t0, n + T HARQ + 5ms + T firstSSB + margin], the requirement on T activation_time can be at least 1 Trs longer.

[0335] Where T FirstSSB is the time of the first SSB indicated by SMTC after n + T HARQ + 3ms, and Margin depends on NW implementation.

[0336] Embodiment 2:

[0337] This embodiment 2 is based on scenario 2+ case 1, and is for Scell with known or unknown timing information.

[0338] In this embodiment 2, taking the unknown SCell activation as an example in combination with Fig. 2d, for the unknown Scell activation case: if the first SSB sent after the OD SSB trigger command is located at time “n + T HARQ + 5ms + T firstSSB + margin” after, the UE cannot follow the Scell activation behavior defined by the relevant protocol. The UE has the following possible impacts: in this case, even if the gNB does not send any SSB at this point in time, the UE will follow the relevant behavior (legacy behavior) to detect the SSB, thereby increasing the UE power consumption.

[0339] In this embodiment, the NW can indicate the valid SSB occasion to the UE after the OD SSB trigger. Thus the UE can perform the necessary SSB detection at the time indicated by the NW. From the perspective of RAN4 requirements, the Scell activation delay can be defined by the time of the OD SSB triggered jointly.

[0340] For SCell activation and deactivation delay:

[0341] Brief introduction:

[0342] Within the defined delay, the UE shall be able to activate the deactivated SCell in EN-DC, standalone NR carrier aggregation, NE-DC or NR DC.

[0343] The activation delay requirement for the deactivated SCell:

[0344] This requirement applies to the UE configured with one downlink SCell in EN-DC, standalone NR carrier aggregation, NE-DC or NR-DC, and the case where one SCell is activated.

[0345] The delay for the UE to be able to activate the deactivated SCell depends on specified conditions.

[0346] Upon receiving the SCell activation command in slot n, the UE shall be able to send a valid CSI report and apply the operation related to the activation command for the activated SCell no later than in the following slot:

[0347] Where:

[0348] T HARQ (ms) is the time between downlink data (DL data) transmission and acknowledgement feedback.

[0349] T activation_time (ms) is the SCell activation delay;

[0350] If the SCell is known and belongs to FR1, T activation_time is:

[0351] T FirstSSB + 5 ms if the measurement period of the activated SCell is equal to or smaller than 2400 ms;

[0352] T FirstSSB_MAX + T rs + 5 ms if the measurement period of the activated SCell is larger than 2400 ms.

[0353] If the SCell is unknown and belongs to FR1, and one of the following conditions is met:

[0354] “ssb-PositionInBurst” indicates that actually only one ssb is being transmitted, or

[0355] “ssb-PositionInBurst” indicates multiple ssb and the TCI indication is provided in the same MAC PDU as the SCell activation command;

[0356] Assuming the side condition signal-to-noise ratio is satisfied T activation_time is:

[0357] T FirstSSB_MAX + T SMTC_MAX + T rs + 5 ms, if the following conditions are satisfied:

[0358] The SCell is contiguous to an active serving cell in the same band, and

[0359] its ssb-PositionInBurst is the same as the SSB-positioninburst of the contiguous FR1 active serving cell, and

[0360] its SMTC offset is the same as the offset of the contiguous FR1 active serving cell, and

[0361] its RTD to the contiguous FR1 active serving cell is less than or equal to 260 ns with respect to the SSB numerology of the SCell to be activated, and its received power difference to the contiguous FR1 active serving cell is less than or equal to 6 dB;

[0362] Otherwise, T activation_time is: FirstSSB_MAX + T SMTC_MAX + 2 * T rs + 5 ms.

[0363] Note 1: In the case of OD SSB, the SCell is activated no later than “k” is indicated by the network to determine the first SSB sent after the OD SSB trigger.

[0364] where T FirstSSB_MAX is the time to the end of the first complete SSB burst indicated by SMTC, or within 5 ms after if SMTC is not configured;

[0365] T SMTC_MAX :

[0366] In FR1, for intra-band contiguous SCell activation, or for intra-band non-contiguous SCell activation, T SMTC_MAXis the longer SMTC period among the activated serving cell and the activated SCell, assuming cell-specific reference signals from the activated serving cell and the activated or released SCell are available in the same time slot; for a UE with [intraBandNRCA-NonCollocated-r18] capability, in case of intra-band non-contiguous SCell activation, or in case of inter-band SCell activation, T SMTC_MAX is the SMTC period of the activated SCell.

[0367] In FR2, in case of intra-band SCell activation, assuming only FR2 intra-band CA is supported in R15, T SMTC_MAX is the longer SMTC period among the activated serving cell and the activated SCell; in case of FR2 inter-band SCell activation, T SMTC_MAX is the SMTC period of the activated SCell.

[0368] T SMTC_MAX The minimum value of T is 10 ms.

[0369] In combination with Embodiment 1 and Embodiment 2, this embodiment combines UE SCell activation with network energy saving, wherein the UE supports OD SSB operation.

[0370] In Embodiment 1, for known SCell activation, the first SSB sent after the OD SSB trigger command should be located before the time “n + T HARQ + 5 ms + T firstSSB + margin”, wherein the parameter meanings can be referred to the description of the aforementioned embodiments. In this embodiment 1, the UE can be allowed to complete the SCell activation procedure before “n + T HARQ + 5 ms + T firstSSB ”.

[0371] In Embodiment 2, as for unknown SCell activation, the occasion “k” of the first SSB sent after the OD SSB trigger command will be indicated by the NW to the UE. In this embodiment 2, the UE can be allowed to complete the SCell activation procedure before “n + k + T HARQ + T FirstSSB_MAX + T SMTC_MAX + 2 * T rs + 5 ms”, wherein the parameter meanings can be referred to the description of the aforementioned embodiments.

[0372] The embodiments of the present disclosure further provide a device for implementing any of the above methods, for example, a device comprising units or modules for implementing the steps performed by the terminal in any of the above methods. For another example, another device is provided, comprising units or modules for implementing the steps performed by the network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0373] It should be understood that the division of each unit or module in the above device is only a logical function division, and all or part of the units or modules can be integrated into one physical entity or physically separated in actual implementation. In addition, the units or modules in the device can be implemented in the form of processor invoking software: for example, the device comprises a processor connected with a memory, the memory stores instructions, and the processor invokes the instructions stored in the memory to implement any of the above methods or to implement the functions of each unit or module of the device, wherein the processor is a general processor such as a central processing unit (CPU) or a microprocessor, and the memory is a memory in the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be implemented by the design of the hardware circuit, and the hardware circuit can be understood as one or more processors; for example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are implemented by the design of the logical relationship between the elements in the circuit; for another example, in another implementation, the hardware circuit is a programmable logic device (PLD), and 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 a configuration file, so as to implement the functions of part or all of the units or modules. All units or modules of the above device can be implemented in the form of processor invoking software, or all units or modules can be implemented in the form of hardware circuit, or part of the units or modules are implemented in the form of processor invoking software, and the remaining part is implemented in the form of hardware circuit.

[0374] In embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), or the like. In another implementation, the processor can implement certain functions through a logical relationship of hardware circuits, and the logical relationship of the hardware circuits 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 processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of part or all of the units or modules described above. 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), or the like.

[0375] FIG. 5a is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG. 5a, the terminal 5100 can include at least one of a transceiver module 5101, a processing module 5102, and the like. In some embodiments, the transceiver module 5101 is configured to receive first information sent by a network device, the first information being used to trigger an on-demand request synchronization signal block (OD SSB) of a secondary cell (SCell). The transceiver module 5101 is further configured to receive an SSB sent by the network device after a first time, wherein the first time is a time when the terminal receives the first information, and the SSB is at least used to activate the SCell.

[0376] Optionally, the transceiver module 5101 is configured to perform at least one of the communication steps, such as receiving and / or sending, performed by the terminal 101 in any of the above methods, which will not be described herein. Optionally, the processing module 5102 is configured to perform at least one of the other steps performed by the terminal 101 in any of the above methods, which will not be described herein.

[0377] FIG. 5b is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG. 5b, the network device 5200 can include at least one of a transceiver module 5201, a processing module 5202, and the like. In some embodiments, the transceiver module 5201 is configured to send first information to a terminal, the first information being used to trigger an on-demand request synchronization signal block (OD SSB) of a secondary cell (SCell); and the transceiver module 5201 is further configured to send an SSB to the terminal after a first time, wherein the first time is a time of sending the first information, and the SSB is used to at least activate the SCell.

[0378] In some embodiments, the transceiver module can include a sending module and / or a receiving module, which can be separate or integrated together. Optionally, the transceiver module can be mutually replaced with a transceiver.

[0379] In some embodiments, the processing module can be one module, or can include multiple sub-modules. Optionally, the multiple sub-modules perform all or part of the steps required to be performed by the processing module. Optionally, the processing module can be mutually replaced with a processor.

[0380] FIG. 6a is a structural schematic diagram of a communication device 6100 according to an embodiment of the present disclosure. The communication device 6100 can be a network device (for example, an access network device, a core network device, and the like), a terminal (for example, a user equipment, and the like), a chip, a chip system, or a processor supporting the network device to implement any of the above methods, or a chip, a chip system, or a processor supporting the terminal to implement any of the above methods. The communication device 6100 can be used to implement the methods described in the above method embodiments, and details can be referred to the descriptions in the above method embodiments.

[0381] As shown in FIG. 6a, the communication device 6100 includes one or more processors 6101. The processor 6101 can be a general-purpose processor or a special-purpose processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control a communication device (for example, a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, and the like), execute a program, and process data of the program. Optionally, the communication device 6100 is configured to implement any of the above methods. Optionally, the one or more processors 6101 are configured to invoke instructions to cause the communication device 6100 to implement any of the above methods.

[0382] In some embodiments, the communication device 6100 further includes one or more transceivers 6102. When the communication device 6100 includes one or more transceivers 6102, the transceiver 6102 performs at least one of the communication steps of sending and / or receiving in the above-described methods, and the processor 6101 performs at least one of the other steps. In alternative embodiments, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Alternatively, the terms transceiver, transceiving unit, transceiver, transceiving circuit, interface circuit, interface, etc. can be replaced by each other, the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced by each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. can be replaced by each other.

[0383] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data. Alternatively, all or part of the memory 6103 can also be outside the communication device 6100. In alternative embodiments, the communication device 6100 can include one or more interface circuits 6104. Alternatively, the interface circuit 6104 is connected with the memory 6103, and the interface circuit 6104 can be used to receive data from the memory 6103 or other devices, and can be used to send data to the memory 6103 or other devices. For example, the interface circuit 6104 can read the data stored in the memory 6103 and send the data to the processor 6101.

[0384] The communication device 6100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 6100 described in the present disclosure is not limited thereto, and the structure of the communication device 6100 can not be limited by Figure 6a. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: 1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally include storage components for storing data, programs; (3) an ASIC, such as a Modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0385] Figure 6b is a structural schematic diagram of a chip 6200 according to an embodiment of the present disclosure. For the case where the communication device 6100 is a chip or a chip system, the structural schematic diagram of the chip 6200 shown in Figure 6b can be referred to, but is not limited thereto.

[0386] The chip 6200 includes one or more processors 6201. The chip 6200 is configured to perform any of the above methods.

[0387] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Optionally, the terms interface circuit, interface, transceiver pin, and the like can be substituted for one another. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data. Optionally, all or part of memory 6203 can be external to chip 6200. Optionally, interface circuit 6202 is connected to memory 6203, and interface circuit 6202 can be used to receive data from memory 6203 or other devices, and interface circuit 6202 can be used to send data to memory 6203 or other devices. For example, interface circuit 6202 can read data stored in memory 6203 and send the data to processor 6201.

[0388] In some embodiments, interface circuit 6202 performs at least one of the communication steps of sending and / or receiving in the above-described methods. The interface circuit 6202 performing the communication steps of sending and / or receiving in the above-described methods, for example, means that interface circuit 6202 performs data interaction between processor 6201, chip 6200, memory 6203, or transceiver devices. In some embodiments, processor 6201 performs at least one of the other steps.

[0389] The modules and / or devices described in each of the embodiments of virtual devices, physical devices, chips, and the like can be combined or separated as appropriate. Optionally, part or all of the steps can also be performed by multiple modules and / or devices in cooperation, which is not limited here.

[0390] The disclosure also proposes a storage medium, and the above-mentioned storage medium stores instructions, when the above-mentioned instructions run on communication device 6100, the communication device 6100 executes any one of the above methods. Optionally, the above-mentioned storage medium is an electronic storage medium. Optionally, the above-mentioned storage medium is a computer readable storage medium, but is not limited to this, it can also be a storage medium readable by other devices. Optionally, the above-mentioned storage medium can be a non-transitory storage medium, but is not limited to this, it can also be a transitory storage medium.

[0391] The disclosure also proposes a program product, and the above-mentioned program product is executed by communication device 6100, so that communication device 6100 executes any one of the above methods. Optionally, the above-mentioned program product is a computer program product.

[0392] The disclosure also proposes a computer program, when it runs on a computer, it makes the computer execute any one of the above methods. Industrial applicability

[0393] In the NES scenario of ODS SB, the terminal can receive SSB within a suitable time range according to the time of triggering the first information of ODS SB, so as to ensure that the related operation such as SCell activation can still be normally carried out in the NES scenario.

Claims

1. A method of communication performed by a terminal, the method comprising: receiving first information transmitted by a network device, the first information being used to trigger on-demand requested synchronization signal block (OD SSB) of a secondary cell (SCell) ; receiving SSB transmitted by the network device after a first time, wherein the first time is a time at which the terminal receives the first information, and the SSB is used to at least activate the SCell.

2. The method of claim 1, wherein, The method further comprises: receiving second information transmitted by the network device, the second information being used to indicate to activate the SCell; transmitting acknowledgement feedback (ACK) to the network device. 3.The method of claim 1 or 2, wherein the SCell is a timing information known SCell. 4.The method of claim 3, wherein the first SSB is located before a second time after the first time. 5.The method of claim 3, wherein a plurality of SSBs are included in a time window [first time, second time], and the receiving SSB transmitted by the network device after the first time comprises: receiving the SSB transmitted by the network device at a third time, wherein the third time is within the time window and has a minimum distance from the second time. 6.The method of claim 4 or 5, wherein the second time is determined according to a protocol definition or a network device configured parameter.

7. The method of claim 6, wherein, The second time t2 is: t2=n+T1+margin, wherein n is a time at which the network device transmits the second information, T1 is determined based on a plurality of constants, margin is a parameter depending on network device implementation, and margin is defined by a protocol or configured by the network device.

8. The method of any one of claims 3 to 7, wherein, The method further comprises: performing an operation of activating the SCell before an activation delay time, wherein the activation delay time t3 satisfies: t3 = n + T1, or wherein T2 is determined based on a plurality of constants, T activation_time determined according to a constant T3, or T activation_time determined according to a*Trs, a being greater than or equal to 1; Trs being a SMTC period, and NR slot length being a slot length of NR. 9.The method of claim 1 or 2, wherein the SCell is a timing information known or unknown SCell.

10. The method of claim 9, wherein, The method further comprises: receiving third information transmitted by the network device, the third information being used to indicate time information of receiving the SSB by the terminal. 11.The method of claim 10, wherein the time information includes a time interval k of a receiving time of the SSB and a transmission time n of the second information.

12. The method of claim 11, wherein, The method further comprises: determining the receiving time of the SSB according to the third information.

13. The method of claim 12, wherein, The method further comprises: performing an operation of activating the SCell before an activation delay time, wherein the activation delay time t3 satisfies: t3 = n + k + T HARQ + T4; or, Wherein, T HARQ is the time for the terminal to send ACK, T4 is determined according to the time domain information of the reference signal configured by the network device, and T5 is determined according to the time domain information of the reference signal and / or the result reported by the network device. 14.A method of communication performed by a network device, the method comprising: transmitting first information to a terminal, the first information being used to trigger on-demand requested synchronization signal block (OD SSB) of a secondary cell (SCell) ; transmitting SSB to the terminal after a first time, wherein the first time is a time at which the first information is transmitted, and the SSB is used to at least activate the SCell.

15. The method of claim 14, wherein, The method further comprises: transmitting second information to the terminal, the second information being used to indicate to activate the SCell; receive an acknowledgement feedback ACK sent by the terminal. 16.The method of claim 14 or 15, wherein, the SCell is a timing information known secondary cell. 17.The method of claim 16, wherein, the first SSB is located after the first time and before the second time. 18.The method of claim 16, wherein, a plurality of SSBs are included in a time window [the first time, the second time], the SSB sent to the terminal after the first time includes: a third time is used to send the SSB to the terminal, wherein the third time is within the time window, and the distance from the second time is minimum. 19.The method of claim 17 or 18, wherein, the second time is determined according to a protocol definition or a network device configured parameter. 20.A terminal, comprising: a transceiver configured to receive first information sent by a network device, the first information is used to trigger an on-demand request synchronization signal block (OD SSB) of a secondary cell (SCell) ; the transceiver is further configured to receive an SSB sent by the network device after a first time, wherein the first time is the time when the terminal receives the first information, and the SSB is at least used to activate the SCell. 21.A network device, comprising: a transceiver configured to send first information to a terminal, the first information is used to trigger an on-demand request synchronization signal block (OD SSB) of a secondary cell (SCell) ; the transceiver is further configured to send an SSB to the terminal after a first time, wherein the first time is the time when the first information is sent, and the SSB is at least used to activate the SCell. 22.A communication device, comprising: one or more processors; wherein the communication device is configured to implement the method of any of claims 1-13, or claims 14-19. 23.A communication system, comprising a terminal and a network device, wherein, the terminal is configured to implement the method of any of claims 1-13; the network device is configured to implement the method of any of claims 14-19. 24.A storage medium, the storage medium stores instructions, wherein, when the instructions run on a communication device, the communication device executes the method of any of claims 1-13, or claims 14-19. 25.A program product, wherein, when the program product is executed by a communication device, the communication device executes the method of any of claims 1-13, or claims 14-19.

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