Method executed by user equipment and user equipment

Abstract

The present invention provides a method executed by a user equipment and the user equipment. The method executed by the user equipment is a method for a UE configured with dual connectivity or multi-connection to reactivate a deactivated SCG during communication with an MCG and an SCG, comprising the following steps: the UE receives an SCG activation command, and when the UE receives the command to activate the SCG, performs at least one of the following operations: resuming the transmission of SRBs and DRBs in the SCG; starting a random access process on the PSCell of the SCG, or starting random access in the PSCell; if timer T310 is running, then stop timer T310; if timer T312 is running, then stop timer T312; resume or start measurement or measurement configuration associated with the SCG; release measurement configuration associated with the SCG in a deactivated state; activate the SCell of the SCG; activate the PSCell of the SCG; start the SCG activation timer; if the SCG deactivation timer is running, then stop the deactivation timer.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and more particularly, to a method executed by a user equipment and corresponding user equipment. Background Art

[0002] With the rapid growth of mobile communications and tremendous technological advances, the world is moving towards a fully interconnected network society, where anyone and anything can access information and share data at any time and anywhere. To meet the demands of mobile broadband services and the communication needs of massive IoT devices, the next-generation communication technology (5G) will research user enhancements for dual connectivity and even multi-connectivity (RP-181469 New WID on DC and CA enhancements).

[0003] Dual connectivity or multi-connectivity refers to the physical establishment of wireless paths between a UE working in a connected state and more than one network node to achieve data transmission. This includes a master control node (MN) and a secondary control node (SN). The MN is executed by a Gnb / Enb / ng-eNB, and the service 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 service cell group controlled by the SN is called the secondary cell group (SCG).

[0004] A UE configured with dual connectivity or multi-connectivity can achieve a higher data rate by communicating with the MCG and the SCG. However, correspondingly, in order to maintain communication between the two network nodes, the power consumption of the UE also increases exponentially. In order to save the power consumption of the UE, the SCG can be deactivated under appropriate circumstances, such as when the communication traffic of the UE is small. The network side can also reactivate a deactivated SCG as needed. How to effectively activate the SCG so that data transmission can be restored is a problem that needs to be solved. Summary of the Invention

[0005] The present invention proposes a solution to the following problem, that is, a solution to the problem that needs to be solved, that is, how to effectively activate the SCG so that data transmission can be restored.

[0006] According to one aspect of the present invention, a method performed by a user equipment is provided, wherein the method is for a user equipment UE configured with dual connectivity or multi-connectivity to reactivate a deactivated SCG during communication with a primary cell group (MCG) and a secondary cell group (SCG), comprising the following steps:

[0007] The UE receives the SCG activation command. When the UE receives the SCG activation command, it performs at least one of the following operations:

[0008] Resume the transmission of signaling bearer SRB and data bearer DRB in SCG;

[0009] Initiate a random access procedure on the primary serving cell (PSCell) of the SCG, or initiate random access on the PSCell;

[0010] If timer T310 is running, stop timer T310, where T310 is a timer started when the UE receives N consecutive out-of-sync indications on the PSCell;

[0011] If timer T312 is running, stop timer T312, where T312 is the measurement ID configured with the timer, and the timer is started when its measurement report is triggered;

[0012] Resume or start the measurement or measurement configuration associated with the SCG;

[0013] Release the measurement configuration associated with the SCG in the deactivated state;

[0014] Activate the secondary serving cell SCell of the SCG;

[0015] Activate the PSCell of the SCG;

[0016] Start the SCG activation timer;

[0017] If the SCG deactivation timer is running, then stop the deactivation timer, where the deactivation timer is a timer that is started when the SCG enters the deactivated state or receives a deactivation command.

[0018] In the above method performed by the user equipment, preferably,

[0019] The operation of activating the serving cell, including the above-mentioned activation of the SCell of the SCG and the above-mentioned activation of the PSCell of the SCG, includes at least the following operations:

[0020] Activate any active bandwidth fragments (BWPs) associated with the serving cell.

[0021] In the above method performed by the user equipment, preferably,

[0022] When a serving cell is activated,

[0023] Transmitting a sounding reference signal SRS on the serving cell;

[0024] Perform channel state information (CSI) reporting for the serving cell;

[0025] If the serving cell is configured with an uplink channel, the transmission is performed on the uplink channel of the serving cell;

[0026] If the serving cell is configured with a random access channel, the transmission is performed on the random access channel of the serving cell;

[0027] Monitoring a physical downlink control channel (PDCCH) on the serving cell;

[0028] Monitor the PDCCH related to the serving cell; or

[0029] If the serving cell is configured with a physical uplink control channel PUCCH, the PUCCH is transmitted on the serving cell.

[0030] In the above method performed by the user equipment, preferably,

[0031] The above-mentioned activation of the PSCell of the SCG is to switch the BWP of the PSCell, and switch the currently dormant BWP to a working or active BWP.

[0032] In the above method performed by the user equipment, preferably,

[0033] The above-mentioned SCG activation command is a radio resource control layer RRC reconfiguration message, which carries information indicating activation of the SCG;

[0034] The SCG activation command is a media access control layer control element MAC CE, which carries information indicating activation of the SCG; or

[0035] The above-mentioned SCG activation command is carried in the downlink control information DCI, and the DCI carries information indicating the activation of the SCG.

[0036] In the above method performed by the user equipment, preferably,

[0037] The RRC reconfiguration message carries an information element indicating information for activating the SCG.

[0038] The above MAC CE is an SCG activation MAC CE, which carries an indication that instructs the UE to activate the currently configured SCG;

[0039] The above MAC CE is a serving cell activation MAC CE. When the PSCell of the SCG is activated, the UE considers that it has received a command to activate the SCG.

[0040] The DCI is in a DCI format, and the DCI format carries a field, where the field or the field value indicates the PSCell of the activated SCG; or

[0041] When the UE receives the PDCCH carrying the DCI format, it activates the PSCell and considers that a command to activate the SCG has been received.

[0042] In the above method performed by the user equipment, preferably,

[0043] When the UE receives the SCG activation command, it sends a confirmation message or a response message to the network side / base station, indicating that the SCG activation command has been received, including:

[0044] After receiving the RRC reconfiguration message carrying the SCG activation command or indicating SCG activation, the UE generates an RRC reconfiguration complete message and submits it to the lower layer for transmission;

[0045] When the UE receives an SCG activation MAC CE carrying an SCG activation command or indicating SCG activation, it triggers an SCG activation confirmation, and in the case of a triggered SCG activation confirmation, when the UE obtains available uplink resources for new transmission, it instructs the multiplexing and assembly entity to generate an SCG activation confirmation MAC CE for transmission; or

[0046] When the UE receives the DCI carrying the SCG activation command or indicating SCG activation, it sends confirmation information on the pre-configured PUCCH resources.

[0047] In the above method performed by the user equipment, preferably,

[0048] When the UE receives the SCG activation command, it sends a confirmation message or a response message to the network side / base station:

[0049] Sent upon receipt of an SCG activation command; or

[0050] Sent when the UE successfully activates the SCG.

[0051] In the above method performed by the user equipment, preferably,

[0052] The timing for resuming transmission in the SCG when the UE receives the SCG activation command is:

[0053] Executed when or after the UE receives the SCG activation command; or

[0054] Executed when or after the UE successfully activates the SCG.

[0055] According to another aspect of the present invention, there is provided a user equipment, including:

[0056] processor; and

[0057] Memory, which stores instructions,

[0058] When the instructions are executed by the processor, the instructions enable the user equipment to perform the method described above.

[0059] According to the method performed by the user equipment and the corresponding user equipment involved in the present disclosure, the SCG can be effectively activated so that data transmission can be restored. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 This is a flowchart illustrating a method executed by a user equipment according to an embodiment of the present invention.

[0061] Figure 2 This is a brief structural block diagram of the user equipment involved in the present invention. DETAILED DESCRIPTION

[0062] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the present invention is not limited to the specific embodiments described below. In addition, for the sake of simplicity, detailed descriptions of known technologies that are not directly related to the present invention are omitted to prevent confusion in understanding the present invention.

[0063] Before the detailed description, the following explanations are given for several terms mentioned in the present invention. Unless otherwise specified, the terms involved in the present invention have the following meanings.

[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 E-UTRAN user plane and control plane protocol stack to the UE and connects to the base station node of the EPC core network

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

[0073] SRB signaling radio bear

[0074] DRB Data radio bear data bearer

[0075] Split SRB Split signaling bearer

[0076] RLC Radio Link Control Radio Link Control Layer

[0077] PDCP Packet Data Convergence Protocol Packet Data Convergence Protocol Layer

[0078] MAC Media Access Control Media Access Control Layer

[0079] MAC CE MAC Control Element MAC control unit

[0080] SRS Sounding Reference Signal

[0081] CSI Channel State Information Channel State Information

[0082] PDCCH Physical Downlink Control Channel Physical Downlink Control Channel

[0083] PUCCH Physical Uplink Control Channel Physical Uplink Control Channel

[0084] RRC Radio Resource Control Radio Resource Control Layer

[0085] DCI Downlink Control Information Downlink Control Information

[0086] Dual connectivity or multi-connectivity refers to a UE operating in a connected state establishing physical wireless paths with more than one network node to achieve data transmission, including a Master Node (MN) and a Secondary Node (SN).

[0087] MN is executed by a base station, which can be a Gnb supporting 5G technology, an Enb supporting 4G technology, or an ng-eNB supporting connection to the next generation core network (5G core network). The service cell group controlled by the MN is called the Master Cell Group (MCG). There is at least one main service cell, called PCell (Primary Cell), and the UE performs radio link monitoring (RLM) on the PCell. If other cells are included in the MCG, they can be collectively referred to as secondary service cells SCell. The SRB established between the MN and the UE is usually called SRB1, which is mainly used to transmit RRC messages between the MN and the UE.

[0088] SN is executed by a base station, which can be a Gnb supporting 5G technology, an Enb supporting 4G technology, or an ng-eNB supporting connection to the next generation core network (5G core network). The service cell group controlled by the SN is called the Secondary Cell Group (SCG). The SCG contains at least one main service cell, called PSCell (Primary Second Cell). The UE performs wireless link monitoring on the PSCell. If the SCG also includes other cells, they can be collectively referred to as secondary service cells SCell. An SRB can be established between the SN and the UE, usually called SRB3, which is mainly used to transmit RRC messages between the SN and the UE, such as SCG-associated measurement reports.

[0089] Hereinafter, specific embodiments of the present invention will be described in detail. As mentioned above, the embodiments of the present invention are provided for easy understanding of the present invention and are not intended to limit the present invention.

[0090] [Example 1]

[0091] This embodiment provides a method for reactivating a deactivated SCG during the communication between a UE configured with dual connectivity or multi-connectivity and an MCG and an SCG. Figure 1Shown, including:

[0092] Step S101: The UE receives an SCG activation command. When the UE receives the SCG activation command, the UE performs at least one or more of the following operations:

[0093] - Resume the transmission of SRBs and DRBs in the SCG. Preferably, the transmission of all SRBs and all DRBs in the SCG may be resumed.

[0094] - Initiate a random access procedure on the PSCell of the SCG, or initiate random access on the PSCell;

[0095] - If timer T310 is running, stop timer T310, where T310 is the timer started when the UE receives N consecutive out-of-sync indications on the PSCell;

[0096] - If timer T312 is running, stop timer T312, where T312 refers to the measurement identity configured with the timer, and the timer is started when its measurement report is triggered;

[0097] - Resume or start measurements associated with the SCG (measuement associated with the SCG) or measurement configuration (measConfig associated with the SCG), where measurement refers to measurement operations performed according to a measurement configuration; such a measurement configuration may be included in the RRCReconfiguration message received by the UE from SRB3, or included in the RRCReconfiguration message embedded in the RRCReconfiguration message received by the UE from SRB1;

[0098] - Release the measurement configuration associated with the SCG in the deactivated state;

[0099] - Activate the SCells of the SCG, preferably, all SCells belonging to the SCG may be activated; or the state of the SCells belonging to the SCG is indicated in the SCG activation command, and the SCells whose state is set to active are activated;

[0100] -Activate the PSCell of the SCG;

[0101] -Start the SCG activation timer. The duration of the timer is pre-configured by the network side / base station. When the timer times out or is stopped, the SCG can be considered to enter a deactivated state, or the SCG is considered to be deactivated;

[0102] -If the SCG deactivation timer is running, then stop the deactivation timer. The deactivation timer is the timer that is started when the SCG enters the deactivated state or receives a deactivation command.

[0103] [Example 2]

[0104] The "activation of the SCell of the SCG" and "activation of the PSCell of the SCG" mentioned in Example 1 can both be referred to as activation of the serving cell. Activation of the serving cell includes at least the following operations:

[0105] - Activate any active BWP (Bandwidth Partition) associated with the serving cell.

[0106] When a serving cell is activated, its characteristics are as follows:

[0107] -SRS can be transmitted on the serving cell (transmit SRS on the SCell);

[0108] - Report CSI for the SCell;

[0109] - If the serving cell is configured with an uplink channel, transmission can be performed on the uplink channel of the serving cell (transmit on UL-SCH on the SCell);

[0110] - If the serving cell is configured with a random access channel, transmission can be performed on the random access channel on the serving cell (transmit on RACH on the SCell);

[0111] -Monitor the PDCCH on the SCell;

[0112] -Monitor the PDCCH for the SCell;

[0113] -If the serving cell is configured with PUCCH, then PUCCH can be transmitted on the serving cell (transmit PUCCH on the SCell).

[0114] It can be considered that the serving cell with the above characteristics can be called an activated cell or a cell in an activated state.

[0115] Embodiment 2 may be performed based on the operation of activating the SCell or activating the PSCell in Embodiment 1.

[0116] [Example 3]

[0117] Another method for implementing the "activation of the PSCell of the SCG" mentioned in Example 1 may be to switch the BWP of the PSCell, switching the currently dormant BWP (Dormant BWP) to a working or active BWP (Active BWP).

[0118] For example, on the PSCell, before receiving the SCG activation command, the BWP used by the UE is a dormant BWP with a BWP ID of BWP-1. When the SCG activation command is received, the BWP used by the UE on the PSCell is switched to a BWP with a BWP ID of BWP-2. This BWP-2 is either an active BWP or a non-dormant BWP.

[0119] The term "dormant BWP" refers to a BWP configuration that does not include a PDCCH configuration, or does not include a valid PDCCH configuration, i.e., the PDCCH configuration is absent. Since these PDCCH configurations are used for PDCCH monitoring, when a dormant BWP does not include a PDCCH configuration, the UE does not need to monitor the corresponding PDCCH on the dormant BWP. Correspondingly, an active BWP refers to a BWP configuration that includes a PDCCH configuration, or a valid PDCCH configuration, and is used for PDCCH monitoring.

[0120] Preferably, the BWP-2 is a pre-configured, default BWP. When the UE receives an SCG activation command, the UE always switches the BWP from the dormant BWP to the default BWP on the PSCell of the SCG.

[0121] Example 3 can be performed based on the operation of activating the PSCell in Example 1.

[0122] [Example 4]

[0123] The SCG activation command mentioned in Examples 1-3 can be implemented in the following three ways:

[0124] Method 1

[0125] The SCG activation command is an RRC reconfiguration message that carries information indicating the activation of the SCG. For example, the reconfiguration message carries an information element that indicates the activation of the SCG. For example, an SCG status information element is set. When the value of the information element is true or 1, the UE is instructed to activate the SCG corresponding to the information element.

[0126] A combination of measures may also be employed, for example, by setting an SCG status information element in the RRC reconfiguration message. When the value of the SCG status information element in the RRC reconfiguration message is true or 1, and when the same RRC reconfiguration message also carries other information elements, such as an IE for performing synchronous reconfiguration (reconfiguration with sync), when both information elements appear simultaneously, it indicates that the UE is instructed to activate the corresponding SCG.

[0127] When the UE receives the RRC reconfiguration message with the above characteristics, it performs the activation operation described in the above embodiments 1-3.

[0128] Method 2

[0129] The SCG activation command may also be a MAC CE that carries information indicating SCG activation, such as an SCG activation MAC CE. Upon receiving this MAC CE, the UE indicates to upper layers, such as the RRC layer, that the SCG is activated, or that the PSCell belonging to the SCG is activated. Based on this indication, the RRC layer performs the activation operations described in Embodiments 1-3 above. Optionally, this MAC CE carries information about the PSCell or the SCell belonging to the SCG.

[0130] For example, in the MAC CE, a bitmap is set, with each bit corresponding to a PSCell or SCell. When the value of the bit corresponding to the PSCell is 1, it indicates that the PSCell or SCG is activated; when the value of the bit corresponding to the SCell is 1, it indicates that the SCell is activated.

[0131] In particular, the PSCell can be re-indicated in the MAC CE. For example, if the cell number / cell ID of the PSCell is X when it is deactivated, then the MAC CE can indicate a cell with a cell number / cell ID of Y as the PSCell. When the SCG is activated, the PSCell is no longer the previous cell X, but cell Y.

[0132] Such an SCG activation MAC CE may be to activate the SCG explicitly or implicitly.

[0133] Activate explicitly

[0134] An SCG activation MAC CE can be designed to carry an indication in the MAC CE, which instructs the UE to activate the currently configured SCG. In particular, if multiple SCGs are configured, the MAC CE also needs to carry the sequence number of the SCG.

[0135] When the UE receives the SCG activation MAC CE, it needs to indicate to the upper layer that the SCG is activated. The upper layer here mainly refers to the RRC layer.

[0136] Based on the indication, the RRC layer performs any operation in the above embodiments 1-3 for the activated SCG.

[0137] Implicit activation

[0138] A serving cell activation MAC CE can be designed. When the activation of the SCG's PSCell is indicated in the MAC CE, the UE can be considered to have received the SCG activation command. Here, the activation of the SCG is implicitly indicated by activating the SCG's PSCell.

[0139] When the UE receives a serving cell activation MAC CE, and the MAC CE indicates the activation of the SCG PSCell, it needs to indicate to the upper layer that the SCG is activated, or that the SCG PSCell is activated. The upper layer here mainly refers to the RRC layer.

[0140] Based on the indication, the RRC layer performs any operation in the above embodiments 1-3 for the activated SCG.

[0141] Method 3

[0142] The SCG activation command may also be carried in downlink control information (DCI), which carries information indicating the activation of the SCG. For example, the DCI carries a field, such as the SCG status field. When the field appears, or when the value of the field is set to a specific value, such as 1, it indicates that the SCG is activated.

[0143] Similarly, such DCI may activate the SCG explicitly or implicitly.

[0144] A DCI format may be designed to carry a field, where the field or the field value indicates the PSCell of the activated SCG.

[0145] When the UE receives a PDCCH carrying this DCI format, it can activate the PSCell and consider that it has received a command to activate 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 is activated, or that the SCG PSCell is activated.

[0146] Based on the indication, the upper layer performs any operation in the above embodiments 1-3 for the activated SCG.

[0147] [Example 5]

[0148] On the basis of Example 4, when the UE receives the SCG activation command, it needs to send confirmation information or response information to the network side / base station to indicate that the SCG activation command has been received.

[0149] Corresponding to the three implementation methods in Example 4, the response information can also be in three forms:

[0150] Method 1

[0151] After receiving an RRC reconfiguration message carrying an SCG activation command or indicating SCG activation, the UE generates an RRC reconfiguration complete message and submits it to the lower layer for transmission. This message is sent to the base station as a response message to the activation command, indicating that the SCG activation command has been received.

[0152] Method 2

[0153] When the UE receives an SCG Activation MAC CE carrying an SCG Activation Command or indicating SCG Activation, it triggers an SCG Activation Confirmation. Furthermore, if a triggered SCG Activation Confirmation exists, and the UE obtains available uplink resources for a new transmission, it instructs the Multiplexing and Assembly procedure to generate an SCG Activation Confirmation MAC CE for transmission. After generating the SCG Activation Confirmation MAC CE, the activated SCG Activation Confirmation may be canceled.

[0154] Method 3

[0155] When the UE receives the DCI carrying the SCG activation command or indicating the SCG activation, it sends confirmation information, such as positive acknowledgement, or ACK, on ​​the pre-configured PUCCH resources.

[0156] [Example 6]

[0157] In Example 5, it is mentioned that when the UE receives the SCG activation command, it needs to send a confirmation message or a response message to the network side / base station. The timing of sending this response message can be when the SCG activation command is received, or when the UE successfully activates the SCG.

[0158] For example, when the UE receives the SCG activation command, it may initiate a random access process in the PSCell. When the random access process is successfully completed, it may be considered that the SCG is successfully activated, and the UE may send the above response message after the random access is successfully completed.

[0159] [Example 7]

[0160] In Embodiment 1-6, it is mentioned that the UE can resume transmission in the SCG when it receives the SCG activation command. This resumption operation can be performed when (after) the UE receives the SCG activation command, or when (after) the UE successfully activates the SCG.

[0161] For example, when the UE receives the SCG activation command, it may initiate a random access procedure in the PSCell. When the random access procedure is successfully completed, the SCG is considered to be successfully activated, and the UE may resume transmission in the SCG.

[0162] [Example 8]

[0163] In one case, when SCG activation fails, the UE may initiate the SCG FAILURE REPORT procedure, during which it sends an SCG Failure Information message to the network. The message may carry the cause of the failure, indicating that the SCG activation failed.

[0164] Here are some ways to determine whether SCG activation is successful or failed:

[0165] Method 1: As previously described, upon receiving the SCG activation command, the UE can initiate a random access procedure on the PSCell. If the random access procedure is successfully completed, the SCG is considered to have been successfully activated. If the random access procedure is not successfully completed, the SCG activation is considered to have failed. For example, if the UE receives an RAproblem, and the RA is triggered by activating the SCG / PSCell, then the SCG activation is considered to have failed.

[0166] Method 2: When the UE receives the SCG activation command, it can start an SCG activation timer. When the timer times out, it can be considered that the SCG activation has failed. When the SCG activation is successful, for example, the random access procedure is successfully completed, the timer can be stopped. In this case, the SCG Failure Information message can indicate that the cause of the failure is the timer timeout. Since the timer is started when the SCG activation is performed, the network side can determine that the SCG activation has failed.

[0167] Figure 2 This is a brief structural block diagram of the user equipment involved in this invention. Figure 2 As shown, the user equipment UE200 includes a processor 201 and a memory 202. The processor 201 may include, for example, a microprocessor, a microcontroller, an embedded processor, etc. The memory 202 may include, for example, a volatile memory (such as a random access memory (RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memory. The memory 202 stores program instructions. When executed by the processor 201, the instructions may execute the above-described method performed by the user equipment as described in detail in the present invention.

[0168] The program running on the device according to the present invention can be a program that controls the central processing unit (CPU) to enable the computer to implement the functions of the embodiments of the present invention. The program or the information processed by the program can be temporarily stored in a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memory systems.

[0169] The program for realizing each embodiment of the present invention function can be recorded on a computer-readable recording medium. Can realize corresponding function by making a computer system read the program recorded on the recording medium and executing these programs. So-called "computer system" herein can be the computer system embedded in the device, can include operating system or hardware (such as peripheral device). "Computer-readable recording medium" can be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a short-term dynamic storage program recording medium or any other recording medium that is computer-readable.

[0170] The various features or functional modules of the devices used in the above embodiments can be implemented or executed by circuits (e.g., single-chip or multi-chip integrated circuits). The circuits designed to perform the functions described in this specification may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), 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 above circuits may be digital circuits or analog circuits. In the event that new integrated circuit technologies have emerged to replace existing integrated circuits due to advances in semiconductor technology, one or more embodiments of the present invention may also be implemented using these new integrated circuit technologies.

[0171] Furthermore, the present invention is not limited to the above-described embodiments. 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.

[0172] 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-described embodiments, and the present invention also includes any design changes that do not deviate from the main purpose of the present invention. In addition, 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 in the technical scope of the present invention. In addition, components with the same effect described in the above embodiments can be replaced with each other.

Claims

1. A user equipment, comprising: processor; as well as a memory in electronic communication with the processor, wherein instructions stored in the memory are executable to: In a case where a deactivated secondary cell group (SCG) is configured, receiving a radio resource control (RRC) reconfiguration message to perform SCG activation; as well as Upon receiving the RRC reconfiguration message: Initiate a random access procedure for SCG activation; as well as Application features include: monitoring a physical downlink control channel PDCCH on a primary SCG cell PSCell of the SCG, and transmitting a physical uplink control channel PUCCH on the PSCell.

2. A communication method for a user equipment, comprising: In a case where a deactivated secondary cell group (SCG) is configured, receiving a radio resource control (RRC) reconfiguration message to perform SCG activation; as well as Upon receiving the RRC reconfiguration message: Initiate a random access procedure for SCG activation; as well as Application features include: monitoring a physical downlink control channel PDCCH on a primary SCG cell PSCell of the SCG, and transmitting a physical uplink control channel PUCCH on the PSCell.

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