Method performed by a user equipment and user equipment

Abstract

This invention provides a method and a user equipment (UE) executed by a user equipment. The method, executed by the UE, is a method for deactivating an SCG during communication with an MCG and an SCG when a UE configured with dual or multiple connections is communicating with an MCG and an SCG. The MCG is a serving cell group controlled by an MN, and the SCG is a serving cell group controlled by an SN. The method includes the following steps: the UE receives a deactivate SCG command; when the UE receives the deactivate SCG command, it performs at least one of the following operations: suspending / pausing the transmission of SRB and DRB in the SCG; stopping timer T310, where T310 is a timer started when the UE continuously receives N out-of-synchronization indications on the PSCell of the SCG; stopping timer T312, where T312 is a timer configured with a measurement ID that is started when its measurement report is triggered; suspending / pausing the measurement configuration associated with the SCG; releasing the measurement configuration associated with the SCG; deactivating the SCell of the SCG; deactivating the PSCell of the SCG; and starting the SCG deactivation timer.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and more specifically, to a method performed by a user equipment and a corresponding user equipment. Background Technology

[0002] With the rapid growth of mobile communications and the tremendous advancements in technology, the world will move towards a fully interconnected network society, where anyone or anything can access information and share data anytime, anywhere. To enhance the communication needs of mobile broadband services and massive IoT terminals, next-generation communication technology (5G) will explore technological enhancements for users in dual-connectivity and multi-connectivity scenarios (RP-181469 New WID on DC and CAenhancements).

[0003] Dual connectivity or multiple connectivity refers to a UE operating in connected mode establishing physical radio pathways with more than one network node and enabling data transmission. This includes a Master Node (MN) and a Secondary Node (SN). The MN is executed by a Gnb / Enb / ng-eNB, and the serving cell group controlled by the MN is called the Master Cell Group (MCG). Correspondingly, the SN is executed by one or more Gnb / Enb / ng-eNBs, and the serving cell group controlled by the SN is called the Secondary Cell Group (SCG).

[0004] UEs configured with dual or multiple connections can achieve high data rates by communicating with both the MCG and SCG. However, the UE's power consumption increases exponentially to maintain communication between the two network nodes. To conserve UE power, the SCG can be deactivated under appropriate circumstances, such as when the UE's communication traffic is low. How to achieve power reduction by deactivating the SCG is a problem that needs to be solved. Summary of the Invention

[0005] This invention proposes solutions to the following problems: a solution for how to reduce power consumption by deactivating the SCG; and a solution for how to report SCG measurement results when the UE is configured with a measurement configuration associated with the SCG and the SCG is deactivated.

[0006] The purpose of this invention is to provide a method and corresponding user equipment that can reduce power consumption by deactivating the SCG and report SCG measurement results when the SCG is deactivated.

[0007] According to one aspect of the present invention, a method performed by a user equipment is provided, which is a method for activating an SCG during communication between a user equipment (UE) configured with dual or multiple connections and a primary cell group (MCG) and a secondary cell group (SCG), wherein the MCG is a serving cell group controlled by a primary control node (MN) and the SCG is a serving cell group controlled by an auxiliary control node (SN), comprising the following steps:

[0008] When the UE receives a deactivation SCG command, it performs at least one of the following operations:

[0009] Suspend / pause the transmission of signaling bearer (SRB) and data bearer (DRB) in the SCG;

[0010] Stop timer T310, where T310 is a timer started when the UE receives N consecutive out-of-sync indications on the primary serving cell PSCell of the SCG;

[0011] Stop timer T312, where T312 is the measurement ID of the timer that is configured to start when its measurement report is triggered;

[0012] Suspend / pause the measurement configuration associated with this SCG;

[0013] Release the measurement configuration associated with this SCG;

[0014] Deactivate the auxiliary service cell (SCell) of the SCG;

[0015] Deactivate the primary serving cell PSCell of this SCG;

[0016] Start SCG to deactivate the timer.

[0017] Of the methods described above that are performed by the user equipment, the preferred method is...

[0018] The operation of deactivating the serving cell, including the SCell and PSCell of the SCG mentioned above, is at least one of the following operations:

[0019] Stop the deactivation timer for the bandwidth segment associated with the serving cell;

[0020] Deactivate any active bandwidth segment (BWP) associated with this serving cell.

[0021] Of the methods described above that are performed by the user equipment, the preferred method is...

[0022] When a serving cell is deactivated

[0023] Do not transmit Sound Reference Signals (SRS) on this serving cell;

[0024] Channel State Information (CSI) reports will not be generated for this serving cell;

[0025] No transmission is performed on the uplink channel of this serving cell;

[0026] No transmission is performed on the random channels of this serving cell;

[0027] Do not listen to the Physical Downlink Control Channel (PDCCH) on this serving cell;

[0028] Do not listen to the PDCCH associated with the serving cell; or

[0029] The Physical Uplink Control Channel (PUCCH) is not transmitted on this serving cell.

[0030] Of the methods described above that are performed by the user equipment, the preferred method is...

[0031] Deactivating the SCG's PSCell involves switching the BWP (Browser WP) of that PSCell, moving the currently active or working BWP to a dormant one.

[0032] Of the methods described above that are performed by the user equipment, the preferred method is...

[0033] When the UE receives the deactivation SCG command, the UE does not perform downlink radio link quality monitoring in PSCell.

[0034] Of the methods described above that are performed by the user equipment, the preferred method is...

[0035] When a UE is configured with a measurement configuration associated with an SCG, and that SCG is deactivated, if the UE needs to report SCG measurement results, then the UE will report the SCG measurement results:

[0036] When the UE's measurement report is associated with the SCG, if the UE is configured with SRB3 and the SCG is in a non-deactivated state, the UE will deliver the measurement report message to the lower layer via SRB3 for transmission. Here, SRB3 is an SRB established between the SN and the UE.

[0037] When the UE's measurement report is associated with the SCG, if the UE is configured with SRB3 and the SCG is in an inactive state at the time of submitting / generating the measurement report message, then the UE will submit the measurement report message to the lower layer via SRB1 for transmission. Here, SRB1 is an SRB established between the MN and the UE.

[0038] When the UE's measurement report is associated with SCG, if the UE is not configured with SRB3, the UE will deliver the measurement report message to the lower layer via SRB1 for transmission.

[0039] Of the methods described above that are performed by the user equipment, the preferred method is...

[0040] When a UE is configured with a measurement configuration associated with an SCG, and that SCG is deactivated, if the UE needs to report SCG measurement results, then the UE will report the SCG measurement results:

[0041] When the UE's measurement report is associated with the SCG, if the UE is configured with SRB3 and the UE has not received a command to activate the SCG before submitting or generating the measurement report message, then the UE will submit the measurement report message to the lower layer via SRB3 for transmission. Here, SRB3 is an SRB established between the SN and the UE.

[0042] When the UE's measurement report is associated with the SCG, if the UE is configured with SRB3 and receives a command to deactivate the SCG before the UE submits the measurement report message, then the UE will submit the measurement report message to the lower layer via SRB1 for transmission. Here, SRB1 is the SRB established between the MN and the UE.

[0043] When the UE's measurement report is associated with SCG, if the UE is not configured with SRB3, the UE will deliver the measurement report message to the lower layer via SRB1 for transmission.

[0044] Of the methods described above that are performed by the user equipment, the preferred method is...

[0045] The Radio Resource Control (RRC) message carries an indication that instructs the UE to deactivate the currently configured SCG.

[0046] The SCG is used to activate the Media Access Control Layer Control Unit (MAC CE), which carries an instruction that instructs the UE to activate the currently configured SCG.

[0047] The UE considers it to have received a command to deactivate the SCG when the PSCell in the serving cell is instructed to deactivate the SCG within that MAC CE; or

[0048] The downlink control information (DCI) format is used, which carries a field, or field value, that indicates the PSCell to activate the SCG.

[0049] According to one aspect of the present invention, another method performed by a user equipment is provided, which is a method for reporting measurement results when an SCG is deactivated during communication between a UE configured with dual or multiple connections and an MCG and an SCG, wherein the MCG is a serving cell group controlled by a primary control node MN and the SCG is a serving cell group controlled by an auxiliary control node SN, comprising the following steps:

[0050] When a UE is configured with a measurement configuration associated with an SCG, and that SCG is deactivated, if the UE needs to report SCG measurement results, then the UE will report the SCG measurement results:

[0051] When the UE's measurement report is associated with the SCG, if the UE is configured with SRB3 and the SCG is in a non-deactivated state, or if the UE has not received a command to activate the SCG before submitting or generating the measurement report message, then the UE will submit the measurement report message to the lower layer via SRB3 for transmission. Here, SRB3 is an SRB established between the SN and the UE.

[0052] When the UE's measurement report is associated with the SCG, if the UE is configured with SRB3 and the SCG is in a deactivated state at the time of submitting / generating the measurement report message, or if the UE receives a command to deactivate the SCG before submitting the measurement report message, then the UE will submit the measurement report message to the lower layer via SRB1 for transmission. Here, SRB1 is an SRB established between the MN and the UE.

[0053] When the UE's measurement report is associated with SCG, if the UE is not configured with SRB3, the UE will deliver the measurement report message to the lower layer via SRB1 for transmission.

[0054] According to another aspect of the present invention, a user equipment is provided, comprising:

[0055] Processor; and

[0056] The memory, on which instructions are stored,

[0057] When the instructions are executed by the processor, they cause the user equipment to perform the method described above.

[0058] According to the method performed by the user equipment involved in this disclosure and the corresponding user equipment, power consumption can be reduced by deactivating the SCG, and SCG measurement results can be reported when the SCG is deactivated. Attached Figure Description

[0059] Figure 1This is a flowchart illustrating a method performed by a user equipment according to an embodiment of the present invention.

[0060] Figure 2 This is a flowchart illustrating a method performed by a user equipment according to another embodiment of the present invention.

[0061] Figure 3 This is a simplified structural block diagram of the user equipment involved in the present invention. Detailed Implementation

[0062] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the present invention should not be limited to the specific embodiments described below. Furthermore, for the sake of simplicity, detailed descriptions of well-known technologies not directly related to the present invention have been omitted to prevent confusion in understanding the present invention.

[0063] Before proceeding with the detailed description, the following explanation is provided for several terms used in this invention. Unless otherwise specified, the terms used in this invention shall have the meanings described below.

[0064] UE User Equipment

[0065] NR New Radio - Next-Generation Wireless Technology

[0066] eLTE Enhanced Long Term Evolution

[0067] E-UTRAN Evolved Universal Terrestrial Radio Access Network

[0068] DC Dual Connectivity

[0069] MC Multi Connectivity

[0070] Gnb provides the NR user plane and control plane protocol stack to the UE and connects to the base station node of the 5G core network.

[0071] Enb provides the UE with the E-UTRAN user plane and control plane protocol stack and connects to the base station node of the EPC core network.

[0072] Ng-enb provides the UE with the E-UTRAN user plane and control plane protocol stack and connects to the base station node of the 5G core network.

[0073] SRB signaling radio bearer

[0074] DRB Data Radio Bearer

[0075] Split SRB signaling bearer

[0076] RLC Radio Link Control (Radio Link Control Layer)

[0077] PDCP (Packet Data Convergence Protocol) layer

[0078] MAC Media Access Control Layer

[0079] Radio Resource Control (RC) layer

[0080] SRS Sounding Reference Signal

[0081] CSI Channel State Information

[0082] PDCCH (Physical Downlink Control Channel)

[0083] PUCCH (Physical Uplink Control Channel)

[0084] DCI Downlink Control Information

[0085] Dual connectivity or multiple connectivity refers to a UE operating in connected mode establishing physical radio pathways with more than one network node and enabling data transmission. This includes a master node (MN) and secondary nodes (SN).

[0086] The MN (Member Network) is executed by a base station, which can be a Gnb (Government Network) supporting 5G technology, an Enb (Engineering Network) supporting 4G technology, or an ng-eNB (Next Generation Network) supporting connection to the 5G core network. The serving cell group controlled by the MN is called the Master Cell Group (MCG). It contains at least one primary serving cell, called the PCell (Primary Cell), on which the UE performs radio link monitoring (RLM). If the MCG contains other cells, they can be collectively referred to as secondary serving cells (SCells). The SRB (Supporting Relay) established between the MN and the UE, usually called SRB1, is mainly used to transmit RRC (Relay Rate Control) messages between the MN and the UE.

[0087] The SN (Serving Network) is executed by a base station, which can be a Gnb (Government Network) supporting 5G technology, an Enb (Engineering Network) supporting 4G technology, or an ng-eNB (Next Generation Network) supporting connection to the 5G core network. The serving cell group controlled by the SN is called the Secondary Cell Group (SCG). Each SCG contains at least one primary serving cell, called the PSCell (Primary Second Cell). The UE performs radio link monitoring on the PSCell. If the SCG contains other cells, they can be collectively referred to as auxiliary serving cells (SCells). An SRB (Supporting Relationship Buffer) can be established between the SN and the UE, usually called SRB3, mainly used to transmit RRC (Reference Rate Controller) messages between the SN and the UE, such as measurement reports associated with the SCG.

[0088] The specific embodiments of the present invention will be described in detail below. Furthermore, as mentioned above, the embodiments in this invention are illustrative examples provided for ease of understanding and are not intended to limit the scope of the invention.

[0089]

Example 1

[0090] This embodiment provides a method for a UE configured with dual or multiple connections to deactivate the SCG during communication with the MCG and SCG, such as... Figure 1 As shown, it includes:

[0091] Step S101: The UE receives a deactivation command for the SCG. When the UE receives the deactivation command for the SCG, the UE performs at least one or more of the following operations:

[0092] -Suspend / pause the transmission of SRBs and DRBs in the SCG, preferably, suspend / pause the transmission of all SRBs and all DRBs in the SCG;

[0093] - Stop timer T310, where T310 is the timer started when the UE receives N out-of-sync indications consecutively on the PSCell;

[0094] -Stop timer T312, where T312 refers to the timer that is configured with the measurement ID and is started when its measurement report is triggered;

[0095] - Suspend / pause the measurement associated with the SCG, where the measurement refers to the measurement operation performed according to the measurement configuration; or suspend / pause the measurement configuration associated with the SCG, such measurement configuration may be contained in the RRCReconfiguration message received by the UE from SRB3, or contained in the RRCReconfiguration message embedded in the RRCReconfiguration message received by the UE from SRB1;

[0096] - Release the measurement configuration associated with the SCG. Such measurement configuration may be contained in the RRCReconfiguration message received by the UE from SRB3, or in the RRCReconfiguration message embedded in the RRCReconfiguration message received by the UE from SRB1.

[0097] - Deactivate the SCell of the SCG, preferably, deactivate all SCells belonging to the SCG;

[0098] -Activate the PSCell of the SCG;

[0099] - Start the SCG deactivation timer. The duration of this timer is pre-configured by the network side / base station. When the timer times out or is stopped, it can be considered that the SCG is no longer in a deactivated state, or that the SCG has been activated.

[0100]

Example 2

[0101] The "deactivation of the SCG's SCell" and "deactivation of the SCG's PSCell" mentioned in Example 1 can both be referred to as deactivating the serving cell. Deactivating the serving cell includes at least the following operations:

[0102] - Stop the deactivation timer bwp-InactivityTimer associated with the bandwidth segment of the serving cell;

[0103] - Deactivate any active BWP (Bandwidth Segment) associated with the serving cell.

[0104] When a serving cell is deactivated, its characteristics include at least one or more of the following:

[0105] - Do not transmit SRS on the serving cell;

[0106] - Do not report CSI for the SCell;

[0107] - No transmission is performed on the uplink channel of the serving cell (not transmit on UL-SCH on the SCell);

[0108] - No transmission is performed on the random channel on the serving cell (RACH on the SCell);

[0109] - Do not monitor the PDCCH on the serving cell;

[0110] - Do not monitor the PDCCH associated with the serving cell (SCell);

[0111] - PUCCH is not transmitted on the serving cell.

[0112] A serving cell that possesses the above characteristics can be considered a deactivated cell or a cell in a deactivated state.

[0113] Example 2 can be executed based on the operation of deactivating SCell or deactivating PSCell performed in Example 1.

[0114]

Example 3

[0115] Another way to implement "deactivate the PSCell of SCG" mentioned in Example 1 is to switch the BWP of the PSCell, switching the currently working or active BWP (ActiveBWP) to the dormant BWP (DormantBWP).

[0116] For example, on this PSCell, before receiving the SCG deactivation command, the BWP ID of the UE's working or active BWP is BWP-1; when the SCG deactivation command is received, the BWP ID of the UE working or active BWP on this PSCell is switched to the BWP ID of BWP-2. This BWP-2 is a dormant BWP.

[0117] The term "dormant BWP" refers to a BWP configuration that does not include PDCCH configuration, or does not include a valid PDCCH configuration, i.e., the PDCCH configuration is default (absent). Since these PDCCH configurations are used for PDCCH listening, when the dormant BWP does not include PDCCH configuration, the UE does not need to listen to the corresponding PDCCH on the dormant BWP, thereby achieving energy saving.

[0118] Preferably, this BWP-2 is a pre-configured, default BWP, belonging to the dormant BWP. When the UE receives an SCG deactivation command, on the PSCell of that SCG, the UE always switches the active BWP to this default BWP.

[0119] Example 3 can be executed based on the operation of deactivating PSCell in Example 1.

[0120]

Example 4

[0121] To further conserve energy, when the UE receives a command to deactivate the SCG, the UE can stop or pause the RLM on the PSCell. A specific implementation method could be...

[0122] When the UE receives a command to deactivate the SCG, the UE does not perform downlink radio link quality monitoring on the PSCell. Conversely, when the UE receives a command to activate the SCG, the UE performs downlink radio link quality monitoring on the PSCell.

[0123] When the UE receives a command to deactivate the SCG, the UE can still continue to execute the RLM on the PSCell. However, to save energy, it can be done in the following way:

[0124] Method 1

[0125] When the SCG is deactivated, the UE performs RLM on a specific BWP.

[0126] This specific BWP can be

[0127] When the UE receives the SCG deactivation command, the BWP (ActiveBWP) that is working or active on the SCG PSCell.

[0128] It can also be the default BWP: When the UE receives the SCG deactivation command, the UE switches to the default BWP and performs RLM on this default BWP. In this case, the default BWP can be deactivated.

[0129] Method 2

[0130] When the SCG is deactivated, the UE performs RLM based on a specific RLM configuration. This RLM configuration can be referred to as RLM configuration-1.

[0131] If the UE does not receive the SCG deactivation command, the UE needs to perform RLM based on RLM configuration-2 on the SCG PSCell.

[0132] Compared to RLM configuration-2, RLM configuration-1 can use a different reference signal for the RLM than RLM configuration-2. Specifically, the period of the reference signal can be different. The period of the reference signal in RLM configuration-1 can be greater than the period of the reference signal in RLM configuration-2.

[0133] Method 3

[0134] The method for determining the RLM indication period when the SCG is deactivated is different from the method for determining the RLM indication period when the SCG is not deactivated.

[0135] The indication period refers to the time interval during which the UE indicates synchronization or synchronization failure information to the upper layer based on the RLM result. For example, if the indication period is X, then at the current time, the UE reports a synchronization (or synchronization failure) indication to the upper layer based on the measurement result, and then at the next time point (X + the current time), the UE reports another synchronization (or synchronization failure) indication to the upper layer based on the measurement result. The interval between these two times is X, which is the indication period.

[0136] When determining the indication period, it can be specifically:

[0137] If the SCG is not deactivated, or no SCG deactivation command is received, the indication period can be selected as the maximum value between the RLM reference signal period -1 and constant 1 (or parameter 1);

[0138] If the UE receives an SCG deactivation command, or if the SCG is deactivated, the indication period can be selected as the maximum value between the RLM reference signal period -2 and constant 2 (or parameter 2).

[0139] Where constant 1 is less than constant 2, or the value of parameter 1 is less than that of parameter 2.

[0140] In addition, Method 1 and Method 2 can be used in combination. For example, when SCG is deactivated, the UE performs RLM on a specific BWP. On that specific BWP, the UE is configured with a specific RLM configuration for performing RLM when SCG is deactivated, namely RLM configuration-1.

[0141] Methods 2 and 3 can also be used in combination, as can methods 1, 2, and 3.

[0142] When a UE is configured with a measurement configuration associated with an SCG, how to report the SCG measurement results is a problem that needs to be solved if the SCG is deactivated.

[0143]

Example 5

[0144] This embodiment provides a method for reporting measurement results when a UE configured with dual or multiple connections has its SCG deactivated during communication with the MCG and SCG. Figure 2 As shown, it includes:

[0145] Step S201: When the UE is configured with a measurement configuration associated with SCG, if the UE needs to report SCG measurement results when the SCG is deactivated, for example, if an SCG measurement reporting operation is triggered, then the UE will report the SCG measurement results. The specific reporting method is as follows:

[0146] In one scenario, when the UE's measurement report is associated with the SCG, if the UE is configured with SRB3 and the SCG is in a non-deactivated state (or in an activated state), then the UE will submit the measurement report message to the lower layer via SRB3 for transmission.

[0147] In another scenario, when the UE's measurement report is associated with the SCG, if the UE is configured with SRB3 and the SCG is in an inactive state at the time of submitting / generating the measurement report message, then the UE will submit the measurement report message to the lower layer via SRB1 for transmission. Preferably, the measurement report is submitted to the lower layer by embedding it in the NR RRC message ULInforamtionTransferMRDC.

[0148] In another scenario, when the UE's measurement report is associated with the SCG, if the UE is not configured with SRB3, the UE will deliver the measurement report message to the lower layer via SRB1 for transmission. Preferably, the measurement report is delivered to the lower layer by embedding it in the NR RRC message ULInforamtionTransferMRDC.

[0149] In the above scenarios, "SCG is in a non-deactivated state" can be replaced by "UE did not receive a command to activate SCG before submitting or generating the measurement report message"; in the above scenarios, "SCG is in a deactivated state at the time of submitting / generating the measurement report message" can be replaced by "UE received a command to deactivate SCG before submitting the measurement report message". Furthermore, since SCG transmission is paused / suspended when SCG is in a deactivated state, in the above scenarios, "SCG is in a deactivated state at the time of submitting / generating the measurement report message" can be replaced by "SCG transmission (or SRB3) is paused / suspended"; correspondingly, in the above scenarios, "SCG is in a non-deactivated state" can be replaced by "SCG transmission (or SRB3) is not paused / suspended".

[0150] Example 5 can be executed in conjunction with Example 1 or independently to address the issue of measurement report transmission during SCG deactivation.

[0151]

Example 6

[0152] The SCG deactivation command received by the UE, as mentioned in Examples 1-5, can be implemented in the following ways:

[0153] Method 1 shows the deactivation

[0154] An RRC message, preferably an RRC reconfiguration message, can be designed to instruct the UE to activate the currently configured SCG. Specifically, if the UE is configured with multiple SCGs, the message should also include the SCG sequence number.

[0155] Based on this instruction, the UE performs any of the operations described in Examples 1-5 above for the deactivated SCG.

[0156] Method 2 shows deactivation

[0157] An SCG can be designed to activate the MAC CE, carrying an instruction instructing the UE to activate the currently configured SCG. Specifically, if multiple SCGs are configured, the MAC CE also needs to carry the SCG's sequence number.

[0158] When the UE receives the SCG deactivation MAC CE, it needs to indicate to the upper layer that the SCG has been deactivated. The upper layer here mainly refers to the RRC layer.

[0159] Based on this instruction, the RRC layer performs any of the operations in Examples 1-5 above for the deactivated SCG.

[0160] Method 3: Implicit Deactivation

[0161] A serving cell deactivation MAC CE can be designed. When a PSCell indicating deactivation of the SCG is displayed in this MAC CE, the UE can assume that it has received a command to deactivate the SCG. Here, the deactivation of the SCG is implicitly indicated through the PSCell indicating deactivation of the SCG.

[0162] When a UE receives a serving cell deactivation MAC CE, and that MAC CE indicates the deactivation of the SCG PSCell, it needs to inform the upper layer that the SCG has been deactivated, or that the SCG PSCell has been deactivated. The upper layer here mainly refers to the RRC layer.

[0163] Based on this instruction, the RRC layer performs any of the operations in Examples 1-5 above for the deactivated SCG.

[0164] Method 4: Implicit Deactivation

[0165] A DCI format can be designed, which carries a field, or field value, that indicates the PSCell to activate.

[0166] When a UE receives a PDCCH carrying this DCI format, it can be considered that it has received a command to deactivate the SCG. Since the reception of the PDCCH is processed at the physical layer, when the PDCCH is received, it needs to indicate to the upper layer that the SCG has been deactivated, or that the SCG PSCell has been deactivated.

[0167] Based on this instruction, the upper layer performs any of the operations in Examples 1-5 above for the deactivated SCG.

[0168] When a UE receives a message / MAC CE / DCI in any of the above methods, it can be considered that the UE has received an SCG deactivation command, or that the SCG is in a deactivated / inactive state.

[0169] If the UE does not receive any of the above methods of message / MAC CE / DCI, it can be assumed that the UE has not received the SCG deactivation command and that the SCG is in an activated state.

[0170] Figure 3 This is a simplified structural block diagram of the user equipment involved in the present invention. Figure 3 As shown, the user equipment UE300 includes a processor 301 and a memory 302. The processor 301 may include, for example, a microprocessor, a microcontroller, an embedded processor, etc. The memory 302 may include, for example, volatile memory (such as random access memory, RAM), a hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory. Program instructions are stored on the memory 302. When executed by the processor 301, these instructions can perform the methods described in detail herein, executed by the user equipment.

[0171] A program running on a device according to the invention can be a program that enables a computer to perform the functions of embodiments of the invention by controlling a central processing unit (CPU). The program, or the information processed by the program, can be temporarily stored in volatile memory (such as random access memory, RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory systems.

[0172] Programs used to implement the functions of the various embodiments of the present invention can be recorded on a computer-readable recording medium. The corresponding functions can be implemented by causing a computer system to read and execute the programs recorded on the recording medium. The term "computer system" here can refer to a computer system embedded in the device, and may include an operating system or hardware (such as peripheral devices). "Computer-readable recording medium" can be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a short-time dynamic storage program recording medium, or any other computer-readable recording medium.

[0173] Various features or functional modules of the devices used in the above embodiments can be implemented or executed by circuits (e.g., monolithic or multi-chip integrated circuits). The circuits designed to perform the functions described in this specification may include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above devices. The general-purpose processor may be a microprocessor, or any existing processor, controller, microcontroller, or state machine. The circuits described above may be digital circuits or analog circuits. In cases where advancements in semiconductor technology have led to new integrated circuit technologies that replace existing integrated circuits, one or more embodiments of the present invention may also be implemented using these new integrated circuit technologies.

[0174] Furthermore, the present invention is not limited to the embodiments described above. Although various examples of the embodiments have been described, the present invention is not limited thereto. Fixed or non-mobile electronic devices installed indoors or outdoors can be used as terminal devices or communication devices, such as AV equipment, kitchen equipment, cleaning equipment, air conditioners, office equipment, vending machines, and other household appliances.

[0175] As described above, embodiments of the present invention have been described in detail with reference to the accompanying drawings. However, the specific structure is not limited to the above embodiments, and the present invention also includes any design modifications that do not depart from the spirit of the invention. Furthermore, various modifications can be made to the present invention within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included within the technical scope of the present invention. In addition, components with the same effects described in the above embodiments can be substituted for each other.

Claims

1. A method executed by a user equipment, comprising: Upon receiving a Radio Resource Control (RRC) reconfiguration message that includes an indication to deactivate the secondary cell group (SCG): Stop radio link monitoring on the main SCG cell PSCell of the SCG; Deactivate all auxiliary cells (SCells) of the SCG; as well as Determine whether signaling bearer 3 is configured and whether the SCG is deactivated, wherein signaling bearer 3 is referred to as SRB3. If SRB3 is configured and SCG is not deactivated, the measurement report message is delivered to the lower layer via SRB3 for transmission. Otherwise, the measurement report message is delivered via signaling bearer 1, which is referred to as SRB1.

2. A user equipment, comprising: processor; as well as A memory, electrically communicating with the processor, wherein instructions stored in the memory can be executed to: Upon receiving a Radio Resource Control (RRC) reconfiguration message that includes an indication to deactivate the secondary cell group (SCG): Stop radio link monitoring on the main SCG cell PSCell of the SCG; Deactivate all secondary cells (SCells) of the SCG; and Determine whether signaling bearer 3 is configured and whether the SCG is deactivated, wherein signaling bearer 3 is referred to as SRB3. If SRB3 is configured and SCG is not deactivated, the measurement report message is delivered to the lower layer via SRB3 for transmission. Otherwise, the measurement report message is delivered via signaling bearer 1, which is referred to as SRB1.

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