Power control method, apparatus, terminal and network node

Abstract

The application discloses a power control method and device, a terminal and a network node, and belongs to the technical field of communication. The power control method of the application embodiment comprises the following steps: a terminal adjusts an uplink power control parameter according to the state of a serving cell group; wherein the serving cell group comprises a master cell group (MCG) and / or at least one secondary cell group (SCG) of the terminal; and the uplink power control parameter is used for controlling the uplink transmission power of the terminal in a dual connectivity (DC) mode and / or a multi-connectivity (MC) mode.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of communication, and particularly relates to a power control method and device, a terminal and a network node. BACKGROUND

[0002] In 3GPP Rel-18, a terminal can be preconfigured with multiple secondary cell groups (SCGs), and the terminal is controlled to switch between the multiple SCGs. The switching between the multiple SCGs can be transparent to a master node (MN). On the one hand, the switching between the multiple SCGs does not cause excessive inter-network element signaling interaction due to frequent SCG switching. On the other hand, the MN and a secondary node (SN) are independent network elements, and can be independently upgraded. Therefore, the SN can support the feature of multiple SCGs, while the MN is a legacy MN that does not support the feature or mechanism of multiple SCGs.

[0003] When the UE switches from a first SCG to a second SCG, the uplink power control of the terminal in some uplink power control modes can have problems due to the fact that the MN is unaware of the switching. For example, in a dynamic mode, the value of a time offset (T-offset) used in the uplink power control mechanism of the UE can change due to the difference in SCG configuration before and after the switching, thereby adversely affecting the communication performance of the UE. If the value becomes smaller, the UE listens to the scheduling of the MN in a time period in which the MN does not attempt to schedule the UE, resulting in a loss in power consumption. If the value becomes larger, the UE does not listen to the scheduling of the MN in a time period in which the MN attempts to schedule the UE, thereby missing the scheduling of the MN. For another example, the semi-static mode 2 is also affected, because the time division duplex (TDD) pattern of the SCG changes before and after the switching. SUMMARY

[0004] Embodiments of the present application provide a power control method, device, terminal and network node, which can solve the problem that the existing implementation affects the uplink power performance of the UE and the communication reliability in the case where the terminal performs access cell group change.

[0005] In a first aspect, a power control method is provided, comprising:

[0006] The terminal adjusts an uplink power control parameter according to the state of a serving cell group.

[0007] The service cell group comprises a master cell group (MCG) of the terminal and / or at least one secondary cell group (SCG); and the uplink power control parameter is used to control uplink transmission power of the terminal in a dual connectivity (DC) mode and / or a multi-connectivity (MC) mode.

[0008] In a second aspect, a power control apparatus is provided, comprising:

[0009] an adjusting module configured to adjust the uplink power control parameter according to a state of the service cell group.

[0010] The service cell group comprises a master cell group (MCG) of the terminal and / or at least one secondary cell group (SCG); and the uplink power control parameter is used to control uplink transmission power of the terminal in a dual connectivity (DC) mode and / or a multi-connectivity (MC) mode.

[0011] In a third aspect, a power control method is provided, comprising:

[0012] The master node (MN) sends first information to a secondary node (SN).

[0013] The first information comprises at least one of the following:

[0014] In a case where the terminal is configured in a multi-connectivity mode and an uplink power control mode is configured in a dynamic mode, a maximum time domain offset that needs to be met when the SN configures or schedules SCG transmission.

[0015] The first request is used to indicate at least one of the following: the SN configures a same time division duplex (TDD) pattern common configuration for multiple SCGs, and the SN configures a TDD pattern configuration with an associated pattern for the multiple SCGs.

[0016] In a fourth aspect, a power control apparatus is provided, comprising:

[0017] a first sending module configured to send first information to a secondary node (SN).

[0018] The first information comprises at least one of the following:

[0019] In a case where the terminal is configured in a multi-connectivity mode and an uplink power control mode is configured in a dynamic mode, a maximum time domain offset that needs to be met when the SN configures or schedules SCG transmission.

[0020] The first request is used to indicate at least one of the following: the SN configures a same time division duplex (TDD) pattern common configuration for multiple SCGs, and the SN configures a TDD pattern configuration with an associated pattern for the multiple SCGs.

[0021] In a fifth aspect, a power control method is provided, comprising:

[0022] In a case where the terminal performs a secondary cell group (SCG) change and an uplink power control mode of the terminal is a dynamic mode, the secondary node (SN) sends a time offset used by the terminal on a current SCG to a master node (MN).

[0023] In a sixth aspect, a power control apparatus is provided, comprising:

[0024] In a case where the terminal performs a secondary cell group (SCG) change and an uplink power control mode of the terminal is a dynamic mode, the secondary node (SN) sends a time offset used by the terminal on a current SCG to a master node (MN).

[0025] In a seventh aspect, a terminal is provided, comprising a processor, a memory, and a program or instructions stored in the memory and executable on the processor, and the program or instructions, when executed by the processor, implement the steps of the method of the first aspect.

[0026] In an eighth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the processor is configured to adjust an uplink power control parameter according to a state of a serving cell group.

[0027] The serving cell group comprises a master cell group (MCG) and / or at least one secondary cell group (SCG) of the terminal, and the uplink power control parameter is used to control uplink transmission power of the terminal in a dual connectivity (DC) mode and / or a multi-connectivity (MC) mode.

[0028] In a ninth aspect, a network node is provided, which is a master node (MN), comprising a processor, a memory, and a program or instructions stored in the memory and executable on the processor, and the program or instructions, when executed by the processor, implement the steps of the method of the third aspect.

[0029] In a tenth aspect, a network node is provided, which is a master node (MN), comprising a processor and a communication interface, wherein the communication interface is configured to send first information to a secondary node (SN).

[0030] The first information comprises at least one of the following:

[0031] In a case where the terminal is configured in a multi-connectivity mode and an uplink power control mode is configured in a dynamic mode, a maximum time domain offset that needs to be met when the SN configures or schedules SCG transmission;

[0032] The first request is used to indicate at least one of the following: the SN configures a same time division duplex (TDD) pattern common configuration for multiple SCGs, and the SN configures a TDD pattern configuration for multiple SCGs with an associated pattern.

[0033] In a eleventh aspect, a network node is provided, the network node being a secondary node SN, comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method according to the fifth aspect.

[0034] In a twelfth aspect, a network node is provided, the network node being a secondary node SN, comprising a processor and a communication interface, wherein the communication interface is configured to send, to a master node MN, a time offset currently used by a terminal on a secondary cell group SCG, in a case that the terminal performs a SCG change and an uplink power control mode of the terminal is a dynamic mode.

[0035] In a thirteenth aspect, a readable storage medium is provided, the readable storage medium storing a program or instructions, the program or instructions, when executed by a processor, implementing the steps of the method according to the first aspect, the third aspect, or the fifth aspect.

[0036] In a fourteenth aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being configured to execute a program or instructions, implementing the steps of the method according to the first aspect, the third aspect, or the fifth aspect.

[0037] In a fifteenth aspect, a computer program / program product is provided, the computer program / program product being stored in a non-transitory storage medium, the program / program product being executed by at least one processor to implement the steps of the method according to the first aspect, the third aspect, or the fifth aspect.

[0038] In the embodiments of the present application, the uplink power control parameter is adjusted according to the state of the service cell group, so as to ensure the UE uplink power performance and communication reliability. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0040] Figure 2 is one of flow diagrams of a power control method according to the embodiments of the present application;

[0041] Figure 3 is one of module diagrams of a power control device according to the embodiments of the present application;

[0042] Figure 4 is a structural block diagram of a terminal according to the embodiments of the present application;

[0043] Figure 5 is another flow diagram of a power control method according to the embodiments of the present application;

[0044] Figure 6 Figure 2 is a module schematic diagram of the power control device according to an embodiment of the present application;

[0045] Figure 7 Figure 3 is a structure block diagram of the network node according to an embodiment of the present application;

[0046] Figure 8 Figure 4 is a flow schematic diagram of the power control method according to an embodiment of the present application;

[0047] Figure 9 Figure 5 is a module schematic diagram of the power control device according to an embodiment of the present application;

[0048] Figure 10 Figure 6 is a structure block diagram of the communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0050] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" are generally of a kind, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally represents a "or" relationship between the front and rear associated objects.

[0051] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably in the embodiments of the present application, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for the purpose of example, and NR terminology is used in most of the following description, but these technologies can also be applied outside the NR system application, such as in a 6th Generation (6G) communication system.

[0052] Figure 1A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a terminal-side device such as a mobile phone, a Tablet Personal Computer, a Laptop Computer, a Personal Digital Assistant (PDA), a palmtop computer, a netbook, an ultra-mobile personal computer (UMPC), a Mobile Internet Device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (a home device with a wireless communication function such as a refrigerator, a television, a washing machine, or furniture), and the like. The wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart anklet, a smart necklace, and the like), a smart wristband, smart clothing, a game machine, and the like. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can be a base station or a core network. The base station can be referred to as a Node B, an evolved Node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a Node B, an evolved Node B (eNB), a home Node B, a home evolved Node B, a WLAN access point, a WiFi node, a transmitting receiving point (TRP), or some other appropriate terminology in the art, as long as the same technical effects are achieved. The base station is not limited to a specific technical term, and it should be noted that only a base station in an NR system is taken as an example in the embodiments of the present application, but the specific type of the base station is not limited.

[0053] The prior art related to the present application is described as follows.

[0054] 1. Basic concepts of DC / CA

[0055] Dual Connectivity (DC), i.e. providing UE with resources of two network nodes, one of which is called Master node (MN) and the other is called Secondary node (SN). In each network node, carrier aggregation technology (CA) can also be used, i.e. configuring UE with a series of serving cells controlled by the node, which form a cell group. The cell group controlled by the MN is the Master Cell Group (MCG), and the cell group controlled by the SN is the Secondary Cell Group (SCG). Each cell group contains a special cell (Special Cell, SpCell) and a series of secondary cells (Secondary Cell, SCell). The special cell in the MCG is called the Primary Cell (PCell), and the special cell in the SCG is called the Primary Secondary Cell (PSCell).

[0056] 2. Dynamic power sharing mechanism on Rel-16 NR-DC

[0057] Uplink power sharing of NR-DC, also known as uplink power control, means that the serving cells in the MCG and the SCG working in the same frequency range (frequency range, FR) can share the total maximum transmit power of the UE for joint power allocation, where FR includes FR1 and FR2. Assuming that the maximum total transmission power (Ptotal) of the UE is fixed, when uplink transmission of the MCG and uplink transmission of the SCG occur at the same time (specifically, uplink transmission of any serving cell in the MCG and uplink transmission of any serving cell in the SCG occur at the same time), the UE needs to adjust the uplink transmission power of the MCG or the SCG to ensure that the sum of the two does not exceed the maximum uplink total transmission power of the UE.

[0058] Uplink power control / uplink power sharing of NR-DC includes three modes:

[0059] Semi-static power control mode 1 (also known as semi-static mode 1): MCG and SCG perform power control according to the maximum transmit power of their respective cell groups respectively;

[0060] Semi-static power control mode 2 (also known as semi-static mode 2): when determining the uplink power, the MCG considers the uplink-downlink frame structure time division duplex pattern (TDD pattern) configuration information of the SCG; the SCG does the same.

[0061] Dynamic power control mode: When SCG determines the uplink power at time T0, if the UE receives the scheduling from MCG before time T0-T_offset, the UE limits the SCG transmission power according to the actual transmission power of MCG, the maximum uplink total transmission power of UE, and the maximum transmission power of SCG, and the UE does not expect to receive the scheduling of MCG during [T0-T_offset~T0]. The specific scheme is as follows: assuming that the UE will start SCG uplink transmission at time T0, the SCG uplink transmission power is denoted as pwr_SCG. The UE calculates the SCG uplink transmission power pwr_SCG at time T0 according to the following manner:

[0062] Before time T0-T_offset, the UE monitors the physical downlink control channel (PDCCH) of MCG:

[0063] If the PDCCH triggers / indicates the UE to perform MCG uplink transmission that overlaps with the SCG uplink transmission at time T0, the SCG uplink transmission power of the UE should satisfy pwr_SCG<=min{P SCG ,P total -MCG tx power}, where P total is the maximum uplink total transmission power of the UE, P SCG is the maximum uplink transmission power of SCG, and MCG tx power is the uplink transmission power of MCG.

[0064] Otherwise, pwr_SCG<=P total .

[0065] After T0-T_offset, the UE does not expect the PDCCH of MCG to schedule the UE to perform MCG uplink transmission that overlaps with the SCG uplink transmission at time T0.

[0066] Wherein, T_offset is the time offset used by the UE when the uplink control mode is dynamic mode, and the value of T_offset is introduced as follows:

[0067] The value of T_offset is Wherein is the maximum preparation time of the UE in MCG, is the maximum preparation time of the UE in SCG. When “look-ahead” is used, the value of T proc,2 ,T proc,CSI , and / or is the maximum value; when “without look-ahead” is used, the maximum value in T proc,2 , proc,CSI , and / or

[0068] Explanation of the above parameters:

[0069] T proc,2 is the terminal's physical uplink shared channel (PUSCH) processing time on the MCG or SCG;

[0070] Note that the processing time can be understood as preparation time, processing time, preparation delay, or processing delay, etc.

[0071] T proc,CSI is the terminal's channel state information (CSI) preparation time on the MCG or SCG;

[0072] is the terminal's SPS PDSCH release preparation time when the PUSCH or PUCCH for sending the SPS PDSCH release on the MCG or SCG is multiplexed with other PUCCH and / or PUSCH;

[0073] is the terminal's PUSCH preparation time when the PUSCH on the MCG or SCG is multiplexed with PUCCH and / or other PUSCH;

[0074] is the terminal's CSI preparation time when the PUSCH or PUCCH for sending the CSI on the MCG or SCG is multiplexed with other PUCCH or PUSCH.

[0075] 3. Rel-17 SCG activation / deactivation mechanism

[0076] ​Rel-17 introduces an SCG activation / deactivation mechanism. When there is no data to be transmitted on the SCG, or the UE is overheating, or for power-saving purposes, the network and UE sides can initiate an SCG deactivation procedure. When these conditions change, the network and UE sides can re-initiate the SCG activation procedure. During SCG deactivation, the UE does not listen to the PDCCH on the SCG, nor does it perform Physical Uplink Shared Channel (PUSCH) or SRS transmissions, allowing the terminal to operate in a more power-efficient manner. Furthermore, during this period, the UE may also perform SCG Radio Resource Management (RRM) and Radio Link Management (RLM) measurements to ensure that the SCG is of good quality when activated.

[0077] 4. Multi-connection MC

[0078] Subsequent versions of 3GPP may introduce multiple SCGs, meaning the network side will configure the terminal with an MCG and more than one SCG, using aggregation or SCG conversion technologies to improve the UE's throughput, mobility, link stability, and other performance aspects.

[0079] The power control method, device, terminal, and network node provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0080] like Figure 2 As shown, this application provides a power control method, including:

[0081] Step 201: The terminal adjusts the uplink power control parameters according to the status of the serving cell group;

[0082] The serving cell group includes: the primary cell group (MCG) and / or at least one secondary cell group (SCG) of the terminal; the uplink power control parameters are used to control the uplink transmission power of the terminal in dual-connectivity DC mode and / or multi-connectivity MC mode.

[0083] It should be noted that the uplink power control parameters (i.e., uplink power control parameters) in the embodiments of this application mainly include at least one of the following: uplink power control mode (i.e., uplink power control mode), maximum uplink transmit power configuration of the UE, maximum uplink transmit power configuration of the UE in the corresponding cell group, terminal capabilities related to uplink power control, and time offset (T_offset) used by the UE in dynamic mode.

[0084] The uplink power control parameters are used to control the uplink transmission power of the terminal in dual-connection DC mode, where DC mode can be NR-DC, EN-DC, NGEN-DC, NE-DC, etc.

[0085] The uplink power control parameter can be configured by the network side in a dual-connection mode, and the uplink power control parameter can also be applied to the multi-connection mode based on a protocol agreement or an indication of the network side when the terminal enters the multi-connection mode.

[0086] Another embodiment is that, when the terminal works in the multi-connection mode, the network side can configure the terminal with an uplink power control parameter dedicated for the multi-connection mode. For example, the network side can configure the uplink power control mode in the multi-connection mode as performing power control independently for each cell group. For another example, when the MCG and the two SCGs of the terminal are both in the active state, the terminal performs independent uplink power control for each cell group based on the maximum uplink transmission power of the UE, the maximum uplink transmission power of the MCG, and the maximum uplink transmission power of the two SCGs respectively configured by the network side.

[0087] It should be noted that the uplink power control mode in the embodiments of the present application includes the three modes in the uplink power sharing and the independent power control of each cell group (which can also be referred to as the independent power control mode).

[0088] The specific implementation of the present application is described as follows.

[0089] Case 1: The terminal sends an indication to the master node (MN) based on the first configuration.

[0090] Optionally, in this case, the implementation of step 201 is as follows:

[0091] In the case that the terminal requests the first configuration from the network side or receives the first configuration, the first indication information is sent to the master node MN.

[0092] It should be noted that the network side mentioned here can refer to the MN or the secondary node (SN), that is, the terminal can request the first configuration from the MN or the SN; optionally, the terminal can receive the first configuration from the MN or the SN.

[0093] Optionally, the first configuration is used to indicate one of the following:

[0094] A11, configure the terminal as a multi-connection mode;

[0095] In this case, at least one SCG is configured for the terminal, so that the terminal is in the multi-connection mode.

[0096] A12, configure the terminal with multiple SCGs;

[0097] It should be noted that the first configuration in this case can be used to configure multiple SCGs for the terminal at a time; or the first configuration is used to additionally configure other SCGs for the terminal in the case that the terminal has been configured with one SCG.

[0098] In this application, the description of the terminal being configured in multiple connection mode and being configured with multiple SCGs can be interchangeable when describing specific methods.

[0099] Optionally, the first indication information is used to indicate one of the following:

[0100] A21, the uplink power control mode supported by the terminal is semi-static mode one (i.e. semi-static mode 1);

[0101] A22, the terminal only supports independent power control for each serving cell group;

[0102] It should be noted that the semi-static mode one mentioned in the embodiments of the present application can also be understood as performing independent power control on each cell group.

[0103] One implementation is that before reporting the first indication information, the terminal has reported the supported uplink power control mode, and then reporting the first indication information means that the terminal re-reports its own uplink power control mode (replaces the previously reported one), or the terminal disables a part of the uplink power control mode and only enables the uplink power control mode currently indicated in the first indication information.

[0104] A23, requesting to configure the uplink power control mode as semi-static mode one;

[0105] A24, requesting to configure independent power control for each serving cell group.

[0106] It should be noted that A21 and A22 above can be regarded as the reporting of terminal capability, i.e. the terminal can directly send its capability on uplink power control to the MN in the case of requesting the first configuration from the network side or receiving the first configuration, and the MN configures the uplink power control mode based on the terminal's capability; and A23 and A24 above can be regarded as the terminal actively requesting to configure the uplink power control mode, i.e. the terminal can directly request the MN to update the uplink power control mode in the case of requesting the first configuration from the network side or receiving the first configuration, and the MN judges whether to reconfigure the uplink power control mode for the terminal based on the terminal's request.

[0107] It should be noted that the terminal can send the first indication information to the MN directly in the case of requesting the first configuration from the network side or receiving the first configuration. Optionally, in order to further reduce the sending frequency of the first indication information, in the case of requesting the first configuration from the network side or receiving the first configuration, the terminal can further determine whether the first condition is met, and only in the case of meeting the first condition, the terminal sends the first indication information to the MN.

[0108] Optionally, the first condition comprises at least one of the following:

[0109] A31, the first configuration is generated by the SN;

[0110] A32, the first configuration is sent to the terminal by the SN;

[0111] A33, the first configuration is invisible to the MN;

[0112] It should be noted that in the three cases of A31 to A33, because the first configuration is determined by the SN, the MN does not know what configuration the SN has performed, and the first indication information needs to be sent to the MN to ensure that the MN and the terminal are consistent in understanding.

[0113] A34, the current uplink power control mode of the terminal is semi-static mode two;

[0114] Specifically, semi-static mode two (i.e., semi-static mode 2) is that when the UE determines the uplink power on the MCG, the uplink and downlink frame structure (for example, the configuration of the time division duplex pattern (TDD pattern)) of the SCG needs to be considered.

[0115] Optionally, in this case, the first condition further comprises at least one of the following:

[0116] A341, the TDD patterns of the multiple SCGs meet a second condition, and the second condition comprises that the TDD patterns of the multiple SCGs are different, or the difference between the TDD patterns of the multiple SCGs is greater than or equal to a first threshold;

[0117] For example, the TDD patterns of the multiple SCGs being different can be at least one of the TDD pattern common configuration and the dedicated configuration being different;

[0118] The difference between the TDD patterns of the multiple SCGs can be that the difference between at least one of the TDD pattern common configuration and the dedicated configuration is greater than or equal to the first threshold.

[0119] The first threshold can be a number or a proportion of different uplink-downlink transmission directions in the TDD pattern of the multiple SCGs on corresponding subframes or slots or Orthogonal Frequency Division Multiplexing (OFDM) symbols.

[0120] A342, the maximum transmission powers of the multiple SCGs satisfy a third condition, and the third condition comprises that the maximum transmission powers of the multiple SCGs are different or a difference between the maximum transmission powers of the multiple SCGs is greater than or equal to a second threshold.

[0121] It should be noted that the manner in A342 can also be applicable to the maximum transmission power of the MCG and / or the maximum transmission power of the UE.

[0122] A35, the current uplink power control mode of the terminal is a dynamic mode.

[0123] Optionally, in this case, the first condition further comprises at least one of the following:

[0124] A351, the time domain offsets corresponding to the multiple SCGs satisfy a fourth condition, and the fourth condition comprises that the time domain offsets corresponding to the multiple SCGs are different or a difference between the time domain offsets corresponding to the multiple SCGs is greater than or equal to a third threshold.

[0125] It should be noted that the time domain offset mentioned here refers to a time offset (T_offset) used by the terminal when the uplink power control mode is a dynamic mode. Since it can be considered that the MCG configuration does not change with SCG switching, i.e., only the SCG configuration changes due to SCG switching, the time domain offset corresponding to the SCG can be understood as, under a certain SCG configuration, the terminal calculates the time domain offset T-offset value based on the SCG configuration, the MCG configuration and the formula

[0126] A352, the maximum transmission powers of the multiple SCGs satisfy a fifth condition, and the fifth condition comprises that the maximum transmission powers of the multiple SCGs are different or a difference between the maximum transmission powers of the multiple SCGs is greater than or equal to a fourth threshold.

[0127] It should be noted that the manner in A352 can also be applicable to the maximum transmission power of the MCG and / or the maximum transmission power of the UE.

[0128] It should be noted that the first threshold, the second threshold, the third threshold and the fourth threshold mentioned above can be a protocol agreement, or can be configured or preconfigured by the network side. ​

[0129] Optionally, the embodiment of the present application further provides a mode for updating uplink power control mode according to terminal service cell group state, and specifically, the second indication information is sent to the MN when the terminal receives the first release indication.

[0130] It should be noted that the second indication information satisfies one of the following:

[0131] A41, for updating the uplink power control mode supported by the terminal;

[0132] It should be noted that this case is that the terminal automatically triggers the update, and as long as the first release indication is received, the terminal automatically updates the supported uplink power control mode, and informs the MN of the capability of the terminal (i.e. the capability of supporting which uplink power control mode).

[0133] A42, for requesting the MN to reconfigure the uplink power control mode;

[0134] It should be noted that this case is that the terminal requests the MN to reconfigure the uplink power control mode, i.e. as long as the first release indication is received, the terminal sends the second indication information to the MN to request the MN to reconfigure the uplink power control mode for it.

[0135] The first release indication is used to indicate at least one of the following:

[0136] A51, release the multi-connection mode configuration;

[0137] A52, release the configuration of at least one of the SCGs.

[0138] The following is an example of the use of this case in actual application.

[0139] Example one, once the UE is configured with the second SCG or the multi-connection mode by the SN, the UE reports its uplink power control capability to the MN as semi-static mode 1

[0140] The specific process in this use case includes:

[0141] Step S101, the UE is configured with the MCG and the first SCG, and works in the dual-connection mode. The dual-connection uplink power control mode is configured as the dynamic mode or the semi-static mode 2.

[0142] Step S102, the UE receives the configuration of the second SCG or is configured as the multi-connection mode.

[0143] Step S103, when the condition A is met, the UE indicates to the network side that it only supports the semi-static mode 1:

[0144] The condition A includes one of the following:

[0145] A1, the second SCG configuration or multi-connection configuration is SN configured, and invisible to the MN;

[0146] A2, the UE current power control mode is semi-static mode 2, and the TDD patterns (common configuration) of the first SCG and the second SCG are different or the difference exceeds a certain preset value;

[0147] A3, the UE current power control mode is dynamic mode, and the T_Offset of the first SCG and the second SCG is different or the difference exceeds a certain preset range;

[0148] Step S104, the UE receives the reconfiguration message, and the dual-connection uplink power control mode is configured as semi-static mode 1.

[0149] Optionally, after step S104, the uplink power control mode is always semi-static mode 1 when the UE switches between the first SCG and the second SCG. If the UE receives the second SCG release indication or the multi-connection release indication from the network side, the UE can update the related capability of the uplink power control mode to the network side.

[0150] Case two: related operations performed by the terminal in the case of SCG switching

[0151] Optionally, in this case, the implementation of step 201 is as follows:

[0152] In the case that the terminal performs SCG switching, the terminal performs a first operation;

[0153] The first operation includes at least one of the following:

[0154] B11, if the uplink power control mode before the switching is dynamic mode, and the terminal keeps the uplink power control mode unchanged after the switching, the terminal determines the time offset used after the switching by a first manner;

[0155] Optionally, the first manner includes at least one of the following:

[0156] B111, the first time offset is determined as the time offset used after the switching, the first time offset is the minimum or maximum value of the time offset before the switching and the time offset calculated according to the SCG after the switching;

[0157] B112, if the difference between the time offset before the switching and the time offset calculated according to the SCG after the switching is greater than or equal to a fifth threshold value, the time offset used after the switching is determined as a default value;

[0158] For example, if the difference (the difference is positive) between the time offset with larger time offset and the time offset with smaller time offset is greater than or equal to the fifth threshold value after the time offset with larger time offset is subtracted from the time offset with smaller time offset, it indicates that the difference between the time offset before the conversion and the time offset after the conversion is large, and at this time, the time offset before the conversion or the time offset after the conversion cannot be used any more, but a pre-set default value is used. For another example, if the difference (positive or negative) between the time offset before the conversion and the time offset calculated according to the SCG after the conversion is greater than or equal to the fifth threshold value after the time offset before the conversion is subtracted from the time offset calculated according to the SCG after the conversion, it indicates that the difference between the time offset before the conversion and the time offset after the conversion is large, and at this time, the time offset before the conversion or the time offset after the conversion cannot be used any more, but a pre-set default value is used.

[0159] B113, if the difference between the time offset before the conversion and the time offset calculated according to the SCG after the conversion is less than or equal to the sixth threshold value, determining that the time offset used after the conversion is a default value.

[0160] For example, if the difference (the difference is negative) between the time offset with smaller time offset and the time offset with larger time offset is less than or equal to the sixth threshold value after the time offset with smaller time offset is subtracted from the time offset with larger time offset, it indicates that the difference between the time offset before the conversion and the time offset after the conversion is large, and at this time, the time offset before the conversion or the time offset after the conversion cannot be used any more, but a pre-set default value is used. For another example, if the difference (negative or positive) between the time offset before the conversion and the time offset calculated according to the SCG after the conversion is less than or equal to the sixth threshold value after the time offset before the conversion is subtracted from the time offset calculated according to the SCG after the conversion, it indicates that the difference between the time offset before the conversion and the time offset after the conversion is large, and at this time, the time offset before the conversion or the time offset after the conversion cannot be used any more, but a pre-set default value is used.

[0161] It should be noted that B112 and B113 can be understood as: if the absolute value of the difference between the time offset before the conversion and the time offset calculated according to the SCG after the conversion is greater than or equal to a pre-set value, it is determined that the time offset used after the conversion is a default value.

[0162] The use of this case in actual application is illustrated as follows.

[0163] Example two, in the dynamic power control mode, the UE always uses the minimum value of T_Offset before and after the SCG Switch or a default value in the SCG Switch process

[0164] The specific process in this use case includes:

[0165] Step S201, the UE is configured with an MCG, a first SCG and a second SCG;

[0166] The dual connectivity uplink power control mode is configured as a dynamic mode, and the time offset calculated according to the first SCG and the second SCG is T_offset1 and T_offset2;

[0167] In step S202, if the terminal performs SCG switching, for example, from the first SCG to the second SCG, the terminal determines the T_offset used after the switching by way B;

[0168] Way B includes one of the following:

[0169] B1, selecting the minimum value of T_offset before and after the switching as the currently selected T_offset value;

[0170] For example, T_offset1 is the minimum, and the time offset used after the switching is determined as T_offset1.

[0171] B2, if the T_offset value before and after the switching changes by more than a certain preset threshold, the UE configures the current time offset as a default value.

[0172] B12, determining the uplink power control mode according to the relationship between the frequency range of the activated SCG after the switching and the frequency range of the MCG;

[0173] It should be noted that the further implementation of this case is:

[0174] B121, if the frequency range of the activated SCG after the switching is different from the frequency range of the MCG, the terminal determines that the uplink power control mode used after the switching is the independent power control mode or the semi-static mode 1.

[0175] The following is an example of the use of this case in actual application.

[0176] Example three, uplink power control mode change triggered by SCG switching, from the same FR to different FR

[0177] In step S301, the UE is configured with MCG (FR1), first SCG (FR1), and second SCG (FR2). The dual connectivity uplink power control mode is configured as a dynamic mode.

[0178] In step S302, the terminal works in the MCG and the first SCG, and uses the dynamic mode for uplink power control.

[0179] Step S303, if the UE performs SCG Switching, from the first SCG Switch to the second SCG, since the MCG and the second SCG are different FRs, the UE performs independent power control for each cell group or uses semi-static mode 1 for uplink power control.

[0180] B122, if the frequency range of the converted activated SCG is the same as the frequency range of the MCG, the terminal performs a second operation;

[0181] Specifically, the second operation includes one of the following:

[0182] B1221, determining that the converted used uplink power control mode is a preconfigured uplink power control mode;

[0183] It should be noted that the terminal can be configured in a preconfigured uplink power control mode under dual connectivity when performing dual connectivity configuration. The uplink power control mode used before conversion is inconsistent with the preconfigured uplink power control mode. In this case, since the frequency range of the converted activated SCG is the same as the frequency range of the MCG, the terminal can use the previously configured uplink power control mode.

[0184] B1222, the terminal ignores the preconfigured uplink power control mode, and determines that the converted used uplink power control mode is an independent power control mode or a semi-static mode 1;

[0185] It should be noted that in this case, the terminal does not consider the configured uplink power control mode and directly performs independent power control after conversion.

[0186] The following is an example of the use of this case in actual application.

[0187] Example four, uplink power control mode change triggered by SCG Switch, from different FR to same FR

[0188] Step S401, the UE is configured with MCG (FR2), first SCG (FR1), and second SCG (FR2). The dual connectivity uplink power control mode is preconfigured as dynamic mode;

[0189] Step S402, the terminal works in MCG and first SCG, and the UE performs independent power control;

[0190] Step S403, if the UE performs SCG Switching, from the first SCG Switch to the second SCG, since the MCG and the second SCG are the same FR, the UE performs dynamic mode according to the preconfigured uplink power control mode, or the UE ignores the preconfigured uplink power control mode and continues to perform independent power control.

[0191] B13. sending time offset change information to the MN;

[0192] Optionally, the time offset change information comprises at least one of:

[0193] SCG switching indication, changed time offset, or change amount of time offset, SCG identifier before switching, and SCG identifier after switching.

[0194] The following is an example of the use of this case in practical application.

[0195] Example Five, UE initiates T_offset update negotiation process after SCG switching

[0196] Step S501, the UE is configured with MCG, first SCG, and second SCG. The uplink power control mode in dual connectivity is configured as dynamic mode.

[0197] Step S502, once the UE performs SCG switching, from the first SCG to the second SCG, the UE reports time offset change information carrying SCG switching indication to the MN, to inform the MN that the UE has performed SCG switching.

[0198] Case Three, terminal determines uplink power control mode based on transmission state

[0199] Optionally, in this case, the implementation of step 201 is:

[0200] In the case that the first transmission of the terminal is in the first state, the uplink power control mode is determined as dynamic mode;

[0201] Wherein, the first transmission is MCG transmission or SCG transmission;

[0202] The first state comprises at least one of:

[0203] Suspended, abnormal, failed, deactivated.

[0204] Optionally, in the case that the first transmission of the terminal is restored, the uplink power control mode is determined as the uplink power control mode used before the first transmission is in the first state or as the configured uplink power control mode.

[0205] The following is an example of the use of this case in practical application.

[0206] Example Six, uplink power control in fast MCG recovery process

[0207] Step S601, the UE is configured with MCG and SCG, and the uplink power control mode is configured as semi-static mode 1;

[0208] Step S602, radio link failure occurs in the MCG;

[0209] Step S603, the UE initiates the MCG failure information procedure (i.e., reports MCG failure through the SCG). Once the procedure is initiated, the UE suspends transmission of the MCG and sends the MCG failure information message through the SCG;

[0210] Step S604, once the UE suspends transmission of the MCG, the UE considers that the uplink power control mode of the UE is dynamic mode.

[0211] Step S605, once the UE receives the MCG synchronization reconfiguration message or once the MCG transmission is resumed, the UE considers that the uplink power control mode of the UE is restored to semi-static mode 1.

[0212] Example Seven, UE uplink power control after SCG deactivation

[0213] Step S701, the UE is configured with MCG and SCG, and the uplink power control mode is configured as semi-static mode 1 (i.e., power hard split);

[0214] Step S702, once the SCG is deactivated, the UE considers that the uplink power control mode of the UE is dynamic mode.

[0215] Step S703, once the SCG is activated or the UE initiates the SCG activation procedure, the UE considers that the uplink power control mode of the UE is restored to semi-static mode 1.

[0216] Case Four, the terminal re-requests configuration of at least one SCG

[0217] Optionally, in this case, the implementation manner of step 201 includes at least one of the following:

[0218] C11, request the network side to configure or reconfigure at least one SCG, so that the maximum preparation time of the multiple SCGs of the terminal does not exceed the maximum preparation time of the MCG;

[0219] It should be noted that the maximum preparation time of the SCG refers to the maximum preparation time of the UE in the SCG The maximum preparation time of the MCG refers to the maximum preparation time of the UE in the MCG If the maximum preparation time of the multiple SCGs of the terminal is less than or equal to the maximum preparation time of the MCG, the time offset is determined by the maximum preparation time of the MCG, and thus the SCG switching operation does not change the time offset.

[0220] C12, requesting the network side to configure or reconfigure at least one SCG, so that the maximum preparation time of multiple SCGs of the terminal does not exceed a seventh threshold value;

[0221] It should be noted that the seventh threshold value can be a protocol agreement, or can be configured or preconfigured by the network side.

[0222] C13, requesting the network side to configure or reconfigure at least one SCG, so that the time division duplex pattern of multiple SCGs of the terminal is configured to be the same or have an associated pattern.

[0223] It should be noted that the network side mentioned in this case can refer to MN or SN, that is, the terminal can request the MN to configure or reconfigure at least one SCG, or request the SN to configure or reconfigure at least one SCG.

[0224] It should be noted that the terminal requests the network side to configure or reconfigure at least one SCG, so that the terminal has the same understanding of T_Offset determined by the terminal and the MN according to at least one SCG configured by the network side.

[0225] It should be noted that in the dual connectivity or multi-connectivity mode, the terminal can more flexibly apply a reasonable uplink power control mode according to the actual situation (for example, SCG switching occurs, or MCG radio link failure occurs, or SCG is deactivated), thereby improving the uplink transmission performance of the UE.

[0226] It should be noted that the power control method provided by the embodiments of the present application can be executed by a power control device, or a control module in the power control device for executing the power control method. In the embodiments of the present application, the power control device executing the power control method is taken as an example to illustrate the power control device provided by the embodiments of the present application.

[0227] As shown in Figure 3 The power control device 300 provided by the embodiments of the present application comprises:

[0228] An adjustment module 301, configured to adjust an uplink power control parameter according to a state of a serving cell group;

[0229] The serving cell group comprises a master cell group MCG and / or at least one secondary cell group SCG of the terminal, and the uplink power control parameter is used to control the uplink transmission power of the terminal in a dual connectivity DC mode and / or a multi-connectivity MC mode.

[0230] Optionally, the adjustment module 301 comprises:

[0231] The first sending unit is configured to send first indication information to the master node (MN) in a case where a first configuration is requested from a network side or the first configuration is received.

[0232] The first indication information is used to indicate one of the following:

[0233] The uplink power control mode supported by the terminal is a semi-static mode one;

[0234] The terminal only supports independent power control for each serving cell group;

[0235] The uplink power control mode is requested to be configured as the semi-static mode one;

[0236] Independent power control for each serving cell group is requested to be configured;

[0237] The first configuration is used to configure the terminal as a multi-connection mode or configure multiple SCGs for the terminal.

[0238] Optionally, the first sending unit is configured to:

[0239] Send the first indication information to the MN in a case where a first condition is met;

[0240] The first condition includes at least one of the following:

[0241] The first configuration is generated by a secondary node (SN);

[0242] The first configuration is sent to the terminal by the SN;

[0243] The first configuration is invisible to the MN;

[0244] The current uplink power control mode of the terminal is a semi-static mode two;

[0245] The current uplink power control mode of the terminal is a dynamic mode.

[0246] Optionally, in a case where the first condition includes that the current uplink power control mode of the terminal is the semi-static mode two, the first condition further includes at least one of the following:

[0247] Time division duplex (TDD) patterns of the multiple SCGs meet a second condition, the second condition including that the TDD patterns of the multiple SCGs are different or a difference between the TDD patterns of the multiple SCGs is greater than or equal to a first threshold;

[0248] Maximum transmission powers of the multiple SCGs meet a third condition, the third condition including that the maximum transmission powers of the multiple SCGs are different or a difference between the maximum transmission powers of the multiple SCGs is greater than or equal to a second threshold.

[0249] Optionally, in a case where the first condition comprises that a current uplink power control mode of the terminal is a dynamic mode, the first condition further comprises at least one of:

[0250] The time domain offsets corresponding to the multiple SCGs satisfy a fourth condition, and the fourth condition comprises that the time domain offsets corresponding to the multiple SCGs are different, or a difference between the time domain offsets corresponding to the multiple SCGs is greater than or equal to a third threshold value.

[0251] The maximum transmission powers of the SCGs corresponding to the multiple SCGs satisfy a fifth condition, and the fifth condition comprises that the maximum transmission powers of the SCGs corresponding to the multiple SCGs are different, or a difference between the maximum transmission powers of the SCGs corresponding to the multiple SCGs is greater than or equal to a fourth threshold value.

[0252] Optionally, the apparatus further comprises:

[0253] The third sending module is configured to, in a case where the first release indication is received, send second indication information to the MN, the second indication information being used for updating an uplink power control mode supported by the terminal or for requesting the MN to reconfigure the uplink power control mode.

[0254] The first release indication is used to indicate at least one of:

[0255] Release the multi-connection mode configuration.

[0256] Release the configuration of at least one of the SCGs.

[0257] Optionally, the adjusting module 301 comprises:

[0258] The execution unit is configured to, in a case where the SCG conversion is performed, perform a first operation.

[0259] The first operation comprises at least one of:

[0260] If the uplink power control mode before the conversion is a dynamic mode and the terminal keeps the uplink power control mode unchanged after the conversion, the terminal determines a time offset used after the conversion by a first manner.

[0261] Determine the uplink power control mode according to a relationship between a frequency range of the activated SCG after the conversion and a frequency range of the MCG.

[0262] Send time offset change information to the MN.

[0263] The first manner comprises at least one of:

[0264] The first time offset is determined as the time offset used after the conversion, which is the minimum or maximum of the time offset before the conversion and the time offset calculated according to the converted SCG;

[0265] If the difference between the time offset before the conversion and the time offset calculated according to the converted SCG is greater than or equal to the fifth threshold value, the time offset used after the conversion is determined as a default value;

[0266] If the difference between the time offset before the conversion and the time offset calculated according to the converted SCG is less than or equal to the sixth threshold value, the time offset used after the conversion is determined as a default value.

[0267] Optionally, the relationship between the frequency range of the activated SCG after the conversion and the frequency range of the MCG is used to determine the implementation of the uplink power control mode, including one of the following:

[0268] If the frequency range of the activated SCG after the conversion is different from the frequency range of the MCG, the terminal determines the uplink power control mode used after the conversion as the independent power control mode or the semi-static mode one;

[0269] If the frequency range of the activated SCG after the conversion is the same as the frequency range of the MCG, the terminal performs a second operation;

[0270] The second operation includes one of the following:

[0271] The uplink power control mode used after the conversion is determined as the preconfigured uplink power control mode;

[0272] The terminal ignores the preconfigured uplink power control mode, and determines the uplink power control mode used after the conversion as the independent power control mode or the semi-static mode one.

[0273] Optionally, the time offset change information includes at least one of the following:

[0274] The SCG conversion indication, the changed time offset, the change amount of the time offset, the SCG identifier before the conversion, and the SCG identifier after the conversion.

[0275] Optionally, the adjustment module 301 includes:

[0276] The determination unit is configured to determine the uplink power control mode as the dynamic mode when the first transmission of the terminal is in a first state;

[0277] The first transmission is the MCG transmission or the SCG transmission;

[0278] The first state includes at least one of the following:

[0279] suspended, abnormal, failed, deactivated.

[0280] Optionally, the apparatus further comprises:

[0281] The determining module is configured to determine, in the case of the first transmission resuming, the uplink power control mode as an uplink power control mode used before the first transmission is in the first state or as a configured uplink power control mode.

[0282] Optionally, the adjusting module 301 comprises at least one of the following:

[0283] The first requesting unit is configured to request the network side to configure or reconfigure at least one SCG, so that the maximum preparation time of the multiple SCGs of the terminal does not exceed the maximum preparation time of the MCG.

[0284] The second requesting unit is configured to request the network side to configure or reconfigure at least one SCG, so that the maximum preparation time of the multiple SCGs of the terminal does not exceed the seventh threshold value.

[0285] The third requesting unit is configured to request the network side to configure or reconfigure at least one SCG, so that the time division duplex pattern of the multiple SCGs of the terminal is configured to be the same or have an associated pattern.

[0286] It should be noted that the apparatus embodiment corresponds to the method described above, and all implementation manners in the method embodiment are applicable to the apparatus embodiment, and the same technical effects can also be achieved, and thus will not be described herein.

[0287] The power control apparatus in the embodiment of the application can be an apparatus, an apparatus with an operating system, or an electronic device, and can also be a component in a terminal, an integrated circuit, or a chip. The apparatus or the electronic device can be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal can include, but is not limited to, the types of the terminal 11 listed above, and the non-mobile terminal can be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, and the like, and the embodiment of the application is not limited in this regard.

[0288] The power control apparatus provided in the embodiment of the application can implement each process of the method embodiment Figure 2 and achieve the same technical effects. To avoid repetition, details will not be described herein.

[0289] The embodiment of the application further provides a terminal, including a processor and a communication interface, the processor is used for adjusting uplink power control parameters according to the state of the serving cell group.

[0290] The service cell group comprises a master cell group (MCG) and / or at least one secondary cell group (SCG) of the terminal, and the uplink power control parameter is used to control uplink transmission power of the terminal in a dual connectivity (DC) mode and / or a multi-connectivity (MC) mode.

[0291] The terminal embodiment corresponds to the terminal-side method embodiment described above, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment and achieve the same technical effects. Specifically, Figure 4 A hardware structure diagram of a terminal according to an embodiment of the present application.

[0292] The terminal 400 includes, but is not limited to, at least some of a radio frequency unit 401, a network module 402, an audio output unit 403, an input unit 404, a sensor 405, a display unit 406, a user input unit 407, an interface unit 408, a memory 409, and a processor 410.

[0293] Those skilled in the art can understand that the terminal 400 can further include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 410 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. Figure 4 The terminal structure shown in the figure does not constitute a limitation on the terminal, and the terminal can include more or fewer components than the figure, or combine certain components, or different component arrangements, which are not described here.

[0294] It should be understood that in the embodiments of the present application, the input unit 404 can include a graphics processing unit (GPU) 4041 and a microphone 4042. The graphics processing unit 4041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 406 can include a display panel 4061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 407 includes a touch panel 4071 and other input devices 4072. The touch panel 4071 is also called a touch screen. The touch panel 4071 can include a touch detection device and a touch controller. The other input devices 4072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), trackballs, mice, joysticks, etc., which are not described here.

[0295] In the embodiments of the present application, the radio frequency unit 401 receives the downlink data from the network side device, and then sends the data to the processor 410 for processing. In addition, the radio frequency unit 401 sends the uplink data to the network side device. Generally, the radio frequency unit 401 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0296] The memory 409 can be used to store software programs or instructions and various data. The memory 409 can mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), etc. In addition, the memory 409 can include a high-speed random access memory, and can also include a non-volatile memory, which can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable ROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. For example, at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state memory device.

[0297] The processor 410 can include one or more processing units; optionally, the processor 410 can integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and application programs or instructions, etc., and the modem processor mainly processes wireless communication, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 410.

[0298] The processor 410 is configured to implement the following steps:

[0299] According to the state of the serving cell group, the uplink power control parameter is adjusted.

[0300] The serving cell group includes a master cell group (MCG) and / or at least one secondary cell group (SCG) of the terminal; and the uplink power control parameter is used to control the uplink transmission power of the terminal in a dual connectivity (DC) mode and / or a multi-connectivity (MC) mode.

[0301] The terminal of the embodiments of the present application adjusts the uplink power control parameter according to the state of the serving cell group, so as to ensure the UE uplink power performance and communication reliability.

[0302] Optionally, the radio frequency unit 401 is configured to implement the following steps:

[0303] In a case that the first configuration is requested from the network side or the first configuration is received, the first indication information is sent to the master node MN;

[0304] The first indication information is used to indicate one of the following:

[0305] The uplink power control mode supported by the terminal is semi-static mode one;

[0306] The terminal only supports independent power control of each serving cell group;

[0307] The uplink power control mode is requested to be configured as semi-static mode one;

[0308] Independent power control of each serving cell group is requested to be configured;

[0309] The first configuration is used to configure the terminal as a multi-connection mode or configure multiple SCGs for the terminal.

[0310] Optionally, the radio frequency unit 401 is further used to implement:

[0311] In a case that the first condition is met, the first indication information is sent to the MN;

[0312] The first condition includes at least one of the following:

[0313] The first configuration is generated for a secondary node SN;

[0314] The first configuration is sent to the terminal by the SN;

[0315] The first configuration is invisible to the MN;

[0316] The current uplink power control mode of the terminal is semi-static mode two;

[0317] The current uplink power control mode of the terminal is a dynamic mode.

[0318] Optionally, in a case that the first condition includes that the current uplink power control mode of the terminal is semi-static mode two, the first condition further includes at least one of the following:

[0319] Time division duplex TDD patterns of the multiple SCGs meet a second condition, the second condition includes that the TDD patterns of the multiple SCGs are different or a difference between the TDD patterns of the multiple SCGs is greater than or equal to a first threshold;

[0320] Maximum transmission powers corresponding to the multiple SCGs meet a third condition, the third condition includes that the maximum transmission powers corresponding to the multiple SCGs are different or a difference between the maximum transmission powers corresponding to the multiple SCGs is greater than or equal to a second threshold.

[0321] Optionally, in a case where the first condition comprises that a current uplink power control mode of the terminal is a dynamic mode, the first condition further comprises at least one of the following:

[0322] The time domain offsets corresponding to the multiple SCGs satisfy a fourth condition, and the fourth condition comprises that the time domain offsets corresponding to the multiple SCGs are different, or a difference between the time domain offsets corresponding to the multiple SCGs is greater than or equal to a third threshold value;

[0323] The maximum transmission powers of SCGs corresponding to the multiple SCGs satisfy a fifth condition, and the fifth condition comprises that the maximum transmission powers of SCGs corresponding to the multiple SCGs are different, or a difference between the maximum transmission powers of SCGs corresponding to the multiple SCGs is greater than or equal to a fourth threshold value.

[0324] Optionally, the radio frequency unit 401 is further configured to implement:

[0325] In a case where the first release indication is received, second indication information is sent to the MN, and the second indication information is used to update an uplink power control mode supported by the terminal or to request the MN to reconfigure the uplink power control mode;

[0326] The first release indication is used to indicate at least one of the following:

[0327] Release the multi-connection mode configuration;

[0328] Release the configuration of at least one of the SCGs.

[0329] Optionally, the processor 410 is configured to implement:

[0330] In a case where the terminal performs SCG conversion, a first operation is performed;

[0331] The first operation comprises at least one of the following:

[0332] If the uplink power control mode before conversion is a dynamic mode, and the uplink power control mode of the terminal remains unchanged after conversion, the terminal determines a time offset used after conversion by a first manner;

[0333] The uplink power control mode is determined according to a relationship between a frequency range of the activated SCG after conversion and a frequency range of the MCG;

[0334] Time offset change information is sent to the MN;

[0335] The first manner comprises at least one of the following:

[0336] The first time offset is determined as the time offset used after the conversion, which is one of the minimum value or the maximum value between the time offset before the conversion and the time offset calculated according to the SCG after the conversion;

[0337] If the difference between the time offset before the conversion and the time offset calculated according to the SCG after the conversion is greater than or equal to the fifth threshold value, the time offset used after the conversion is determined as a default value;

[0338] If the difference between the time offset before the conversion and the time offset calculated according to the SCG after the conversion is less than or equal to the sixth threshold value, the time offset used after the conversion is determined as a default value.

[0339] Optionally, the processor 410 is configured to implement one of the following:

[0340] If the frequency range of the activated SCG after the conversion is different from the frequency range of the MCG, the terminal determines the uplink power control mode used after the conversion as the independent power control mode or the semi-static mode one;

[0341] If the frequency range of the activated SCG after the conversion is the same as the frequency range of the MCG, the terminal performs a second operation;

[0342] The second operation includes one of the following:

[0343] The uplink power control mode used after the conversion is determined as the preconfigured uplink power control mode;

[0344] The terminal ignores the preconfigured uplink power control mode, and determines the uplink power control mode used after the conversion as the independent power control mode or the semi-static mode one.

[0345] Optionally, the time offset change information includes at least one of the following:

[0346] The SCG conversion indication, the changed time offset, the change amount of the time offset, the SCG identifier before the conversion, and the SCG identifier after the conversion.

[0347] Optionally, the processor 410 is configured to implement:

[0348] In the case that the first transmission of the terminal is in a first state, the uplink power control mode is determined as the dynamic mode;

[0349] The first transmission is the MCG transmission or the SCG transmission;

[0350] The first state includes at least one of the following:

[0351] Suspended, abnormal, failed, deactivated.

[0352] Optionally, the processor 410 is further configured to implement the following:

[0353] In the case of the first transmission recovery of the terminal, the uplink power control mode is determined as the uplink power control mode used before the first transmission is in the first state or as the configured uplink power control mode.

[0354] Optionally, the radio frequency unit 401 is further configured to implement at least one of the following:

[0355] Requesting the network side to configure or reconfigure at least one SCG so that the maximum preparation time of multiple SCGs of the terminal does not exceed the maximum preparation time of the MCG;

[0356] Requesting the network side to configure or reconfigure at least one SCG so that the maximum preparation time of multiple SCGs of the terminal does not exceed the seventh threshold value;

[0357] Requesting the network side to configure or reconfigure at least one SCG so that the time division duplex pattern general configuration of multiple SCGs of the terminal is the same or has an associated pattern.

[0358] Preferably, the embodiments of the application further provide a terminal, which comprises a processor, a memory, a program or instructions stored in the memory and executable on the processor, the program or instructions being executed by the processor to implement various processes of the power control method embodiments and achieve the same technical effects. To avoid repetition, details are not described here.

[0359] The embodiments of the application further provide a readable storage medium, which stores a program or instructions, the program or instructions being executed by a processor to implement various processes of the power control method embodiments and achieve the same technical effects. To avoid repetition, details are not described here. The computer readable storage medium includes a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0360] As shown in Figure 5 The embodiments of the application further provide a power control method, which comprises:

[0361] Step 501, the master node MN sends first information to the secondary node SN;

[0362] The first information includes at least one of the following:

[0363] D11, in the case of the terminal being configured in a multi-connection mode and the uplink power control mode being configured in a dynamic mode, the maximum time domain offset that needs to be met when the SN configures or schedules SCG transmission;

[0364] It should be noted that the maximum time domain offset refers to the maximum preparation time of the UE in the SCG Controlled by MN The terminal is consistent with the T_Offset calculated by the MN, which can ensure the scheduling accuracy of the MN to the terminal.

[0365] D12, the first request, the first request is used to indicate at least one of the following: SN configures multiple SCG with the same time division duplex TDD pattern common configuration, SN configures multiple SCG with TDD pattern configuration with associated patterns;

[0366] It should be noted that by controlling the SCG configuration of the SN by the MN, the MN can clearly know how the SN configures the SCG, avoiding the situation that the SCG configuration is invisible to the MN, and thus the scheduling accuracy of the MN to the terminal can be ensured.

[0367] The following is an example of the use of this in practical application.

[0368] Example eight, network side sends configuration to ensure that the configuration parameters meet the requirements

[0369] In dynamic power control mode, the parameter T_offset value is The two are determined by MCG configuration and SCG configuration respectively. The MN can indicate to the SN The maximum value, used by the SN to determine the appropriate SCG configuration, that is, the Should not exceed the limit given by the MN. After configuring the SCG, the SN will send the actual To the MN, and the MN knows So the MN can calculate T_offset. Based on this, the network side can use the following method to solve:

[0370] If the MN configures the UE's uplink power control mode as dynamic mode, and the UE is configured with multiple SCG by the MN, the MN can control the T_offset value to be unchanged in the above Xn interface interaction signaling process, for example, the MN indicates to the SN The maximum value of Is less than or equal to a certain value of

[0371] Similarly, if the MN configures the UE's uplink power control mode as semi-static mode 2, and the UE is configured with multiple SCG by the MN, the MN requests the SN to configure multiple SCG TDD pattern common configuration to be the same or have associated patterns.

[0372] It should be noted that the second SCG can also be SN configured, which can not be visible to the MN, and the SN should ensure that the configuration meets the above requirements.

[0373] It should be noted that the embodiment of the application avoids the situation that the MN scheduling is affected due to the SCG configuration not being visible to the MN by controlling the SCG configuration of the SN by the MN, and the embodiment of the application can ensure the accuracy of the MN scheduling of the terminal.

[0374] As Figure 6 shown, the embodiment of the application also provides a power control device 600, comprising:

[0375] The first sending module is configured to send first information to the secondary node SN.

[0376] The first information includes at least one of the following:

[0377] In the case that the terminal is configured in a multi-connection mode and the uplink power control mode is configured in a dynamic mode, the maximum time domain offset that needs to be met when the SN configures or schedules SCG transmission;

[0378] The first request is used to indicate at least one of the following: the SN configures the same time division duplex (TDD) pattern for multiple SCGs, and the SN configures the TDD pattern for multiple SCGs with associated patterns.

[0379] The device embodiment corresponds to the above method, and all implementation manners in the method embodiment are applicable to the device embodiment and can achieve the same technical effects, and thus will not be described here.

[0380] Preferably, the embodiment of the application also provides a network node, which is a master node (MN), comprising a processor, a memory, a program or instructions stored on the memory and executable on the processor, which implement various processes of the power control method embodiment applied to the MN side when executed by the processor, and can achieve the same technical effects. To avoid repetition, this will not be described here.

[0381] The embodiment of the application also provides a readable storage medium, and the computer readable storage medium stores a program or instructions, which implement various processes of the power control method embodiment applied to the MN side when executed by the processor, and can achieve the same technical effects. To avoid repetition, this will not be described here.

[0382] The computer readable storage medium, such as read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, etc.

[0383] The embodiment of the application further provides a network node, which is a master node MN, comprising a processor and a communication interface, the communication interface being used for sending first information to a secondary node SN;

[0384] The first information comprises at least one of the following:

[0385] The maximum time domain offset that needs to be met when the terminal is configured in a multi-connection mode and the uplink power control mode is configured in a dynamic mode during SCG transmission configured or scheduled by the SN;

[0386] The first request is used for indicating at least one of the following: the SN configures the same time division duplex TDD pattern common configuration for multiple SCGs, and the TDD pattern configuration configured by the SN for the multiple SCGs has an associated pattern.

[0387] The network node embodiment corresponds to the above-mentioned MN side method embodiment, and each implementation process and implementation manner of the above-mentioned method embodiment can be applied to the network node embodiment and achieve the same technical effects.

[0388] Specifically, the embodiment of the application further provides a network node, which is a master node MN. As shown in the figure, Figure 7 The network node 700 comprises an antenna 701, a radio frequency device 702 and a baseband device 703. The antenna 701 is connected with the radio frequency device 702. In the uplink direction, the radio frequency device 702 receives information through the antenna 701 and sends the received information to the baseband device 703 for processing. In the downlink direction, the baseband device 703 processes the information to be sent and sends it to the radio frequency device 702, and the radio frequency device 702 processes the received information and sends it out through the antenna 701.

[0389] The above-mentioned frequency band processing device can be located in the baseband device 703, and the method executed by the network device in the above embodiment can be implemented in the baseband device 703, which comprises a processor 704 and a memory 705.

[0390] The baseband device 703 may, for example, comprise at least one baseband board, and a plurality of chips are arranged on the baseband board, as shown in the figure, Figure 7 One of the chips is, for example, a processor 704 connected with the memory 705 to call the program in the memory 705 and execute the network device operation shown in the above method embodiment.

[0391] The baseband device 703 may, for example, comprise at least one baseband board, and a plurality of chips are arranged on the baseband board, as shown in the figure,

[0392] Specifically, the network device of the embodiment of the present application further comprises instructions or programs stored on the memory 705 and executable on the processor 704, and the processor 704 invokes the instructions or programs in the memory 705 to execute the method shown in the above embodiments and achieve the same technical effects. To avoid repetition, details are not described herein. Figure 6 Specifically, the network device of the embodiment of the present application further comprises instructions or programs stored on the memory 705 and executable on the processor 704, and the processor 704 invokes the instructions or programs in the memory 705 to execute the method shown in the above embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0393] As Figure 8 shown, the embodiment of the present application further provides a power control method, comprising:

[0394] Step 801, in the case that the terminal performs secondary cell group (SCG) switching and the uplink power control mode of the terminal is a dynamic mode, a secondary node (SN) sends a time offset used by the terminal on a current SCG to a master node (MN).

[0395] The following is an example of the use of this case in actual application.

[0396] Example 9, after SCG switching, the SN initiates the T_offset update negotiation process

[0397] Step 1: the UE is configured with MCG, first SCG, and second SCG. The uplink power control mode in dual connectivity is configured as a dynamic mode.

[0398] Step 2: once the UE performs SCG switching, from the first SCG to the second SCG, the SN informs the MN of its current T-offset value.

[0399] It should be noted that, in the case of SCG switching of the terminal, the embodiment of the present application informs the MN of the time offset used by the terminal on the switched SCG, avoids the case that the MN is affected by the SCG configuration which is invisible to the MN, and ensures the accuracy of the scheduling of the MN to the terminal.

[0400] As Figure 9 shown, the embodiment of the present application further provides a power control device 900 applied to a secondary node (SN), comprising:

[0401] The second sending module is configured to, in the case that the terminal performs secondary cell group (SCG) switching and the uplink power control mode of the terminal is a dynamic mode, send a time offset used by the terminal on a current SCG to a master node (MN).

[0402] It should be noted that the device embodiment corresponds to the above method, and all implementation manners in the above method embodiment are applicable to the device embodiment and can achieve the same technical effects, which are not described herein.

[0403] Preferably, the embodiment of the application further provides a network node, the network node being a secondary node SN, comprising a processor, a memory, a program or instructions stored in the memory and executable on the processor, which, when executed by the processor, implements each process of the power control method embodiment applied to the SN side and achieves the same technical effects. To avoid repetition, details are not described here.

[0404] The embodiment of the application further provides a readable storage medium, the computer readable storage medium storing a program or instructions, which, when executed by a processor, implements each process of the power control method embodiment applied to the SN side and achieves the same technical effects. To avoid repetition, details are not described here.

[0405] The computer readable storage medium is, for example, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

[0406] The embodiment of the application further provides a network node, the network node being a secondary node SN, comprising a processor and a communication interface, the communication interface being configured to send, to a master node MN, a time offset currently used by a terminal on a secondary cell group SCG in a case that the terminal performs SCG switching and an uplink power control mode of the terminal is a dynamic mode.

[0407] The network node embodiment corresponds to the SN side method embodiment described above, and each implementation process and implementation manner of the method embodiment can be applied to the network node embodiment and achieve the same technical effects.

[0408] Specifically, the embodiment of the application further provides a network node, the network node being a secondary node SN, specifically, the structure of the SN can refer to the structure of the network node in Figure 7 , and details are not described here.

[0409] Optionally, as shown in Figure 10 , the embodiment of the application further provides a communication device 1000, comprising a processor 1001, a memory 1002, a program or instructions stored in the memory 1002 and executable on the processor 1001. For example, when the communication device 1000 is a terminal, the program or instructions, when executed by the processor 1001, implement each process of the power control method embodiment described above and achieve the same technical effects. When the communication device 1000 is a network node, the program or instructions, when executed by the processor 1001, implement each process of the power control method embodiment described above and achieve the same technical effects. To avoid repetition, details are not described here.

[0410] The terminal device can be a device that provides voice and / or data connectivity to a user, a hand-held device having a wireless connection function, or other processing devices connected to a wireless modem, etc. In different systems, the name of the terminal device can also be different, for example, in the 5G system, the terminal device can be called user equipment (User Equipment, UE). The wireless terminal device can communicate with one or more core networks (Core Network, CN) through a radio access network (Radio Access Network, RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (also known as a "cellular" phone) and a computer with a mobile terminal device, for example, it can be a portable, pocket, handheld, computer built-in or vehicle-mounted mobile device, which exchanges language and / or data with the radio access network. For example, personal communication service (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDA) and other devices. The wireless terminal device can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, which is not limited in the embodiments of the present application.

[0411] The network node related by the embodiments of the present application can be a base station (BTS) in a Global System of Mobile communication (GSM) or a Code Division Multiple Access (CDMA), can be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA), can be an evolved base station (eNB or eNodeB) in an LTE, or can be a relay station or an access point, or can be a base station in a future 5G network, and the like, and is not limited herein.

[0412] The network node and the terminal can each use one or more antennas for Multi Input Multi Output (MIMO) transmission, and the MIMO transmission can be Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). According to the shape and number of the antenna combination, the MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or can be diversity transmission or precoding transmission or beamforming transmission, and the like.

[0413] The embodiments of the present application further provide a chip, which comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running programs or instructions to realize various processes of the power control method embodiments and achieve the same technical effects, and details are not repeated here to avoid repetition.

[0414] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system-level chip, a system chip, a chip system or a system-on-chip, and the like.

[0415] It should be noted that, in the present document, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element. Furthermore, it is to be understood that the method and apparatus of the present application can be carried out by more than one process, method, article, or apparatus either simultaneously, concurrently, or with intervening action that are carried out at the same time, either in a simultaneous fashion or in a fashion that is interleaved in time. For example, the described methods can be performed in a different order from that described, and / or various steps can be combined or omitted, and / or additional steps can be added, without departing from the scope of the present application. Also, features described with respect to certain examples can be combined in other examples.

[0416] From the above description of the embodiments, it is apparent that the above-described method of the embodiments can be realized by means of software and general-purpose hardware platforms, and of course, can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such an understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk) and includes a number of instructions for causing a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the methods described in the various embodiments of the present application.

[0417] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are merely illustrative, rather than limiting, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims.

Claims

1. A power control method, characterized by, Comprise: The terminal adjusts the uplink power control parameter according to the state of the serving cell group; Wherein, the serving cell group comprises: the master cell group MCG and / or at least one secondary cell group SCG of the terminal; the uplink power control parameter is used to control the uplink transmission power of the terminal in the dual connectivity DC mode and / or the multi-connectivity MC mode; Wherein, the terminal adjusts the uplink power control parameter according to the state of the serving cell group, comprising: In the case that the terminal performs SCG conversion, the terminal performs a first operation; Wherein, the first operation comprises at least one of the following: If the uplink power control mode before conversion is dynamic mode, and the terminal keeps the uplink power control mode unchanged after conversion, the terminal determines the time offset used after conversion by a first method; According to the relationship between the frequency range of the activated SCG after conversion and the frequency range of the MCG, the uplink power control mode is determined; Send time offset change information to the MN; The first method comprises at least one of the following: Determine the first time offset as the time offset used after conversion, wherein the first time offset is the minimum or maximum value of the time offset before conversion and the time offset calculated according to the SCG after conversion; If the difference between the time offset before conversion and the time offset calculated according to the SCG after conversion is greater than or equal to the fifth threshold value, determine the time offset used after conversion as a default value; If the difference between the time offset before conversion and the time offset calculated according to the SCG after conversion is less than or equal to the sixth threshold value, determine the time offset used after conversion as a default value; Or The terminal adjusts the uplink power control parameter according to the state of the serving cell group, comprising: In the case that the first transmission of the terminal is in a first state, determine the uplink power control mode as dynamic mode; Wherein, the first transmission is MCG transmission or SCG transmission; The first state comprises at least one of the following: Suspended, abnormal, failed, deactivated; Or The terminal adjusts the uplink power control parameter according to the state of the serving cell group, comprising at least one of the following: Request the network side to configure or reconfigure at least one SCG, so that the maximum preparation time of multiple SCGs of the terminal does not exceed the maximum preparation time of the MCG; Request the network side to configure or reconfigure at least one SCG, so that the maximum preparation time of multiple SCGs of the terminal does not exceed the seventh threshold value; Request the network side to configure or reconfigure at least one SCG, so that the time division duplex pattern of multiple SCGs of the terminal is configured to be the same or have associated patterns.

2. The method of claim 1, wherein, The terminal adjusts the uplink power control parameter according to the state of the serving cell group, comprising: In the case that the terminal requests a first configuration from the network side or receives the first configuration, send first indication information to the master node MN; Wherein, the first indication information is used to indicate one of the following: The uplink power control mode supported by the terminal is semi-static mode one; The terminal only supports independent power control of each serving cell group; Request to configure the uplink power control mode as semi-static mode one; Request configuration of independent power control for each serving cell group; The first configuration is used to: configure the terminal in a multi-connection mode, or configure multiple SCGs for the terminal.

3. The method of claim 2, wherein, Sending the first indication information to the master node MN includes: If the first condition is met, send the first instruction information to MN; The first condition includes at least one of the following: The first configuration is for generating the secondary node SN; The first configuration is that the SN is sent to the terminal; The first configuration is not visible to the MN; The terminal's current uplink power control mode is semi-static mode two; The terminal's current uplink power control mode is dynamic mode.

4. The method of claim 3, wherein, If the first condition includes the terminal's current uplink power control mode being semi-static mode two, the first condition also includes at least one of the following: The time-division duplex (TDD) patterns of multiple SCGs satisfy the second condition, which includes: the TDD patterns of the multiple SCGs are different, or the difference between the TDD patterns of the multiple SCGs is greater than or equal to the first threshold. The maximum transmit power of the SCGs corresponding to the multiple SCGs satisfies the third condition, which includes: the maximum transmit power of the multiple SCGs is different, or the difference in the maximum transmit power of the multiple SCGs is greater than or equal to the second threshold.

5. The method of claim 3, wherein, If the first condition includes the terminal's current uplink power control mode being dynamic mode, the first condition also includes at least one of the following: The time-domain offsets corresponding to multiple SCGs satisfy the fourth condition, which includes: the time-domain offsets corresponding to multiple SCGs are different, or the difference between the time-domain offsets corresponding to multiple SCGs is greater than or equal to the third threshold. The maximum transmit power of multiple SCGs meets the fifth condition, which includes: the maximum transmit power of multiple SCGs is different, or the difference between the maximum transmit power of multiple SCGs is greater than or equal to the fourth threshold.

6. The method according to claim 2 or 3, characterized in that, Also includes: When the terminal receives the first release instruction, it sends a second instruction information to the MN. The second instruction information is used to update the uplink power control mode supported by the terminal, or to request the MN to reconfigure the uplink power control mode. Wherein, the first release indication is used to indicate at least one of the following: Release multi-connection mode configuration; Release the configuration of at least one of the SCGs.

7. The method of claim 1, wherein, The determination of the uplink power control mode based on the relationship between the frequency range of the converted activated SCG and the frequency range of the MCG includes the following: If the frequency range of the activated SCG after conversion is different from the frequency range of the MCG, the terminal determines that the uplink power control mode used after conversion is either independent power control mode or semi-static mode 1. If the frequency range of the activated SCG after conversion is the same as the frequency range of the MCG, the terminal performs the second operation; The second operation includes one of the following: It is confirmed that the uplink power control mode used after the conversion is the pre-configured uplink power control mode; The terminal ignores the pre-configured uplink power control mode and determines that the uplink power control mode used after conversion is either independent power control mode or semi-static mode one.

8. The method of claim 1, wherein, The time offset change information includes at least one of the following: The SCG conversion indication, the changed time offset, the change of the time offset, the SCG identifier before the conversion, and the SCG identifier after the conversion.

9. The method of claim 1, wherein, In a case where the first transmission of the terminal is in a first state, in a case where the uplink power control mode is determined as a dynamic mode, the method further comprises: In a case where the first transmission of the terminal is resumed, the uplink power control mode is determined as an uplink power control mode used before the first transmission is in the first state or as a configured uplink power control mode.

10. A power control device, applied to a terminal, characterized in that, Comprise: An adjusting module, configured to adjust an uplink power control parameter according to a state of a serving cell group; The serving cell group comprises a master cell group (MCG) and / or at least one secondary cell group (SCG) of the terminal, and the uplink power control parameter is used to control uplink transmission power of the terminal in a dual connectivity (DC) mode and / or a multi-connectivity (MC) mode. The adjusting module comprises: An execution unit, configured to perform a first operation in a case where SCG conversion is performed. The first operation comprises at least one of the following: If the uplink power control mode before the conversion is a dynamic mode, and the uplink power control mode of the terminal remains unchanged after the conversion, the terminal determines a time offset used after the conversion by a first manner; According to a relationship between a frequency range of an activated SCG after the conversion and a frequency range of the MCG, the uplink power control mode is determined; Time offset change information is sent to the MN; The first manner comprises at least one of the following: A first time offset is determined as the time offset used after the conversion, the first time offset being one of a time offset before the conversion and a time offset calculated according to the SCG after the conversion, which has a minimum value or a maximum value; If a difference between the time offset before the conversion and the time offset calculated according to the SCG after the conversion is greater than or equal to a fifth threshold value, the time offset used after the conversion is determined as a default value; If the difference between the time offset before the conversion and the time offset calculated according to the SCG after the conversion is less than or equal to a sixth threshold value, the time offset used after the conversion is determined as the default value; Or The adjusting module comprises: A determination unit, configured to determine the uplink power control mode as a dynamic mode in a case where the first transmission of the terminal is in a first state. The first transmission is MCG transmission or SCG transmission. The first state comprises at least one of the following: Suspended, abnormal, failed, deactivated, or the like. Or The adjusting module comprises at least one of the following: A first request unit, configured to request a network side to configure or reconfigure at least one SCG, so that a maximum preparation time of multiple SCGs of the terminal does not exceed a maximum preparation time of the MCG; A second request unit, configured to request the network side to configure or reconfigure at least one SCG, so that the maximum preparation time of the multiple SCGs of the terminal does not exceed a seventh threshold value; A third request unit, configured to request the network side to configure or reconfigure at least one SCG, so that time division duplex pattern configurations of the multiple SCGs of the terminal are the same or have associated patterns.

11. The apparatus of claim 10, wherein, The adjusting module comprises: The first sending unit is configured to send first indication information to the master node (MN) in a case where a first configuration is requested from a network side or the first configuration is received. The first indication information is used to indicate one of the following: The uplink power control mode supported by the terminal is a semi-static mode 1; The terminal only supports independent power control for each serving cell group; The uplink power control mode is requested to be configured as the semi-static mode 1; Independent power control for each serving cell group is requested to be configured; The first configuration is used to configure the terminal as a multi-connection mode or configure the terminal with multiple SCGs.

12. The apparatus of claim 11, wherein, The first sending unit is configured to: Send the first indication information to the MN in a case where a first condition is met. The first condition includes at least one of the following: The first configuration is generated for a secondary node (SN); The first configuration is sent to the terminal by the SN; The first configuration is invisible to the MN; The current uplink power control mode of the terminal is a semi-static mode 2; The current uplink power control mode of the terminal is a dynamic mode.

13. The apparatus of claim 11 or 12, wherein, Further comprising: A third sending module configured to send second indication information to the MN in a case where a first release indication is received, the second indication information being used to update the uplink power control mode supported by the terminal or to request the MN to reconfigure the uplink power control mode. The first release indication is used to indicate at least one of the following: Release the configuration of the multi-connection mode; Release the configuration of at least one of the SCGs.

14. A terminal, characterized by A processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions being executed by the processor to implement the steps of the power control method according to any one of claims 1 to 9.

15. A readable storage medium, characterized by, A readable storage medium storing a program or instructions, the program or instructions being executed by a processor to implement the steps of the power control method according to any one of claims 1 to 9.

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