CN111436112A

CN111436112A - Communication method and device

Info

Publication number: CN111436112A
Application number: CN201910028790.7A
Authority: CN
Inventors: 刘哲; 肖洁华; 唐浩; 龙毅
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-01-11
Filing date: 2019-01-11
Publication date: 2020-07-21
Anticipated expiration: 2039-01-11
Also published as: WO2020143347A1; CN111436112B

Abstract

The application provides a communication method and device. The method comprises the following steps: if the sum of the first transmit power of the communication device in the first time unit in the first cell group and the first transmit power of the communication device in the second time unit in the second cell group is greater than the maximum transmit power of the communication device, the communication device performs power control to obtain a second transmission power of the communication device in the first cell group in the first time unit and a second transmission power of the communication device in the second cell group in the second time unit, then based on a second transmit power of the communication device within the first time unit and in the first cell group, transmitting channels and/or signals in the first cell group in a first time unit, and depending on a second transmit power of the communication device in the second cell group in a second time unit, and transmitting channels and/or signals in the second cell group in the second time unit, which is helpful for improving the communication efficiency of the communication device.

Description

Communication method and device

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to a communication method and apparatus.

Background

A communication system (e.g., New Radio (NR)) Dual Connectivity (DC) includes a Master Cell Group (MCG) and a Secondary Cell Group (SCG). The MCG may include one or more carriers, and if the MCG includes multiple carriers, Carrier Aggregation (CA) may be performed between the carriers, and the SCG may include one or more carriers, and if the MCG includes multiple carriers, CA may be performed between the carriers.

The main base station in the MCG is responsible for scheduling the MCG, the secondary base station in the SCG is responsible for scheduling the SCG, and since the MCG and the SCG are two independent schedulers for scheduling, the sum of the transmission power of the MCG and the transmission power of the SCG is larger than the maximum transmission power of the terminal due to the fact that the MCG and the SCG are both wanting to use the transmission power of the terminal too much due to the untimely information interaction, and therefore the transmission power of the MCG or the SCG needs to be scaled (i.e. the transmission power of the MCG or the SCG is reduced). For example, the master base station of MCG may need to use the maximum transmission power, and the secondary base station of SCG may need to use the maximum transmission power due to the lack of time for information exchange, so that the uplink channels in MCG and SCG need to be power scaled or channels on some carriers are discarded. If MCG is defined to have high priority, uplink transmit power on all carriers of SCG may be scaled to 0, which affects transmission performance on SCG.

Disclosure of Invention

The application provides a communication method and device for performing power control and improving communication efficiency of communication equipment.

In a first aspect, the present application provides a communication method, including: a communication device determining, from a first transmit power in a first time unit in a first cell group and a first transmit power in a second time unit in a second cell group, a second transmit power in the first time unit in the first cell group and a second transmit power in the second time unit in the second cell group, a sum of the first transmit power in the first time unit in the first cell group and the first transmit power in the second time unit in the second cell group being greater than a maximum transmit power of the communication device; the communication device transmitting channels and/or signals in the first cell group in the first time unit according to a second transmit power in the first cell group in the first time unit and transmitting channels and/or signals in the second cell group in the second time unit according to a second transmit power in the second cell group in the second time unit; wherein the first time unit comprises a time unit within a first time interval corresponding to the first cell group that overlaps with a second time interval corresponding to the second cell group, the second time unit comprising a time unit within the second time interval corresponding to the second cell group that overlaps with the first time interval corresponding to the first cell group; a first transmit power of the communication apparatus within the second time unit in the second cell group is different from a third transmit power of the communication apparatus within a third time unit in the second cell group, the third time unit comprising a time unit within a third time interval corresponding to the second cell group that overlaps the first time interval corresponding to the first cell group; the first cell group and the second cell group are respectively one of a master cell group and a secondary cell group, the master cell group comprises a master cell, and the secondary cell comprises a master and a secondary cell.

Based on the above scheme, if the sum of the first transmission power of the communication device in the first time unit in the first cell group and the first transmission power of the communication device in the second time unit in the second cell group is larger than the maximum transmission power of the communication device, the communication device performs power control to obtain a second transmission power of the communication device in the first cell group in the first time unit and a second transmission power of the communication device in the second cell group in the second time unit, then based on a second transmit power of the communication device within the first time unit and in the first cell group, transmitting channels and/or signals in the first cell group in a first time unit, and depending on a second transmit power of the communication device in the second cell group in a second time unit, and transmitting channels and/or signals in the second cell group in the second time unit, which is helpful for improving the communication efficiency of the communication device.

The communication device determining a second transmission power in the first cell group in the first time unit and a second transmission power in the second cell group in the second time unit may include the following implementation methods:

the first method is realized, when the first transmission power of the communication device in the first cell group is larger than the sum of the remaining power and the guaranteed power of the first cell group in the first time unit and the first transmission power of the communication device in the second cell group in the second time unit is not larger than the guaranteed power of the second cell group, the communication device reduces the transmission power of the communication device in the first cell group in the first time unit; wherein a second transmit power of the communication device in the second cell group in the second time unit is equal to a first transmit power of the communication device in the second time unit in the second cell group, and a sum of the second transmit power of the communication device in the first time unit in the first cell group and the second transmit power of the communication device in the second time unit in the second cell group is less than or equal to a maximum transmit power of the communication device; the sum of the guaranteed power of the first cell group, the guaranteed power of the second cell group and the remaining power is equal to the maximum transmit power of the communication device.

In one possible implementation, the method for reducing the transmit power of the communication device in the first cell group for the first time unit comprises: the communication equipment reduces the transmission power of the communication equipment in the first time unit and in a Physical Random Access Channel (PRACH), a Physical Uplink Control Channel (PUCCH), a Physical Uplink Shared Channel (PUSCH) or a Sounding Reference Signal (SRS) of the first cell group; or the communication device reduces the transmission power of the PUSCH without ACK/NACK/CSI or SRS of the first cell group in the first time unit; or the communication device reduces the transmission power of the communication device in the first time unit, in the PRACH, PUCCH, or PUSCH transmitting ACK/NACK/CSI of the first cell group.

In one possible implementation, the first transmit power of the communications apparatus in the first time unit for the first cell group is different from a fourth transmit power of the communications apparatus in a fourth time unit for the first cell group, the fourth time unit including a time unit within the first time interval corresponding to the first cell group that overlaps with the third time interval corresponding to the second cell group.

Implementing method two, if the first transmission power of the communication device in the first cell group is larger than the sum of the remaining power and the guaranteed power of the first cell group in the first time unit, and the first transmission power of the communication device in the second cell group in the second time unit is smaller than the guaranteed power of the second cell group, the communication device reduces the transmission power of the communication device in the first cell group in the first time unit; wherein a second transmit power of the communication device in the second cell group in the second time unit is equal to a first transmit power of the communication device in the second cell group in the second time unit, the second transmit power of the communication device in the first cell group in the first time unit is not greater than a sum of a remaining power and a guaranteed power of the first cell group; the sum of the guaranteed power of the first cell group, the guaranteed power of the second cell group and the remaining power is equal to the maximum transmit power of the communication device.

If the first transmission power of the communication device in the first time unit is larger than the guaranteed power of the first cell group and the first transmission power of the communication device in the second time unit is larger than the guaranteed power of the second cell group, the communication device performs power control in the residual power according to the channel priority and/or the carrier priority of the first cell group and the second cell group, and determines the second transmission power of the first cell group in the first time unit and the second transmission power of the second cell group in the second time unit; wherein a sum of the guaranteed power of the first cell group, the guaranteed power of the second cell group, and the remaining power is equal to a maximum transmit power of the communication device.

In one possible implementation method, the communication device performing power control in the remaining power according to channel priorities and/or carrier priorities of the first cell group and the second cell group, determining a second transmission power in the first time unit in the first cell group and a second transmission power in the second time unit in the second cell group, includes: the channel priorities of the first cell group and the second cell group are different, the communication device performs power control in the residual power, performs power control on a channel with a lower channel priority in the first cell group and the second cell group, and determines a second transmission power of the first cell group in the first time unit and a second transmission power of the second cell group in the second time unit, wherein the channel priorities are as follows from high to low: the physical uplink control channel comprises a PRACH on a primary cell, a PUCCH or a PUSCH for transmitting ACK/NACK/SR, a PUCCH or a PUSCH for transmitting CSI, a PUSCH without transmitting ACK/NACK/CSI, an SRS or a PRACH on a secondary cell. Or, the channel priority of the first cell group is the same as that of the second cell group, the communication device performs power control on the cell group with lower carrier priority in the first cell group and the second cell group in the residual power, determines a second transmission power in the first cell group in the first time unit and a second transmission power in the second cell group in the second time unit, and the carrier priority is sequentially from high to low: a main cell in the main cell group, a main and auxiliary cell in the auxiliary cell group, and an auxiliary cell in the main cell group or the auxiliary cell group; the first cell group further includes at least one secondary cell, the first cell group further includes at least one secondary cell.

In a second aspect, the present application provides a communication apparatus having a function of a communication device implementing the first aspect or any implementation method of the first aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In one possible design, the communication device includes: a processor, a memory, a bus, and a communication interface; the memory stores computer-executable instructions, the processor is connected with the memory through the bus, and when the communication device runs, the processor executes the computer-executable instructions stored in the memory, so that the communication device executes the communication method in the first aspect or any implementation manner of the first aspect. For example, the communication device may be a terminal, an access network device, or the like.

In another possible design, the communication device includes a processor coupled with a memory, and the memory is used for storing a program, which when executed by the processor causes the communication device to perform the communication method according to the first aspect or any implementation manner of the first aspect.

In another possible design, the communication device may also be a chip, the chip includes a processing unit and optionally a storage unit, and the chip may be configured to perform the communication method in the first aspect or any implementation manner of the first aspect.

In a third aspect, the present application provides a storage medium having stored thereon a computer program or instructions which, when executed, cause a computer to perform the communication method as in the first aspect described above or any implementation manner of the first aspect.

In a fourth aspect, the present application provides a computer program product. The computer program product comprises computer software instructions which are loadable by a processor to carry out the procedures of the communication method of any of the above-mentioned first aspects.

In a fifth aspect, an embodiment of the present application provides a chip system, including: a processor configured to perform the method described in the first aspect above or any implementation manner of the first aspect.

In a sixth aspect, an embodiment of the present application provides a communication system, including: a communications device for performing the method described in the first aspect above, or any implementation form of the first aspect.

Drawings

FIG. 1 is a schematic diagram of a possible network architecture provided herein;

fig. 2 is a schematic flow chart of a communication method provided in the present application;

FIG. 3 is a power division diagram provided herein;

FIG. 4 is an exemplary diagram of time units and time intervals provided herein;

fig. 5(a) is a schematic diagram of a first power control scheme provided in the present application;

FIG. 5(b) is a diagram illustrating a second power control scheme provided herein;

FIG. 6(a) is a schematic diagram of a third power control scheme provided herein;

FIG. 6(b) is a fourth power control schematic provided herein;

FIG. 7(a) is a schematic diagram of a fifth power control scheme provided herein;

fig. 7(b) is a sixth power control schematic diagram provided herein;

FIG. 7(c) is a diagram illustrating a seventh exemplary power control scheme provided herein;

FIG. 7(d) is a diagram illustrating an eighth exemplary power control scheme provided herein;

fig. 8 is a schematic diagram of a communication device provided in the present application;

fig. 9 is a schematic diagram of another communication device provided in the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings. The particular methods of operation in the method embodiments may also be applied to apparatus embodiments or system embodiments. In the description of the present application, the term "plurality" means two or more unless otherwise specified.

The architecture and the service scenario described in the present application are for more clearly illustrating the technical solution of the present application, and do not constitute a limitation to the technical solution provided in the present application, and with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the present application is also applicable to similar technical problems.

It is to be understood that "equal" or "in the present application may mean exactly equal, and may also mean equal after rounding, or floating point removal. For example, two powers in the present application are equal, the values of the two powers may be exactly equal, or the values of the two powers may be equal after being processed according to the same rule (such as rounding, or floating point removing).

It is to be understood that "<" in the present application means "less than", "< ═" means "less than or equal to", ">" "means" greater than "and" > "" means "greater than or equal to".

Fig. 1 is a schematic diagram of a possible network architecture to which the present application is applicable, and includes a terminal 10 and an access network device 20. The terminal 10 communicates with the access network device 20 via a radio interface. The communication device in this application may be the terminal 10 in fig. 1, or may be the access network device 20 in fig. 1.

For example, the communication method of the present application may be implemented when the terminal 10 is transmitting channels and/or data to the access network device 20. As another example, the communication method of the present application may be implemented when the access network device 20 is transmitting channels and/or data to the terminal 10 or other access network devices.

The terminal is a device with a wireless transceiving function, and may be deployed on the land, including indoors or outdoors, in a handheld or vehicle-mounted manner, or may be deployed on the water surface (such as a ship, etc.), or may be deployed in the air (such as an airplane, a balloon, and a satellite, etc.), the terminal may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in an industrial control (industrial control), a wireless terminal in a self driving (driving), a wireless terminal in a remote medical (remote medical), a wireless terminal in a smart grid (smart grid), a wireless terminal in a transport security (transport), a wireless terminal in a smart city (smart city), a wireless terminal in a smart home (PDA), and a wireless terminal in a smart phone (smart phone), a wireless terminal in a smart phone (smart phone) terminal, a wireless terminal in a smart phone (smart phone), a wireless terminal in a wireless terminal (smart phone) station, a wireless terminal in a wireless network (smart phone) or a wireless terminal (wireless terminal) in a wireless network, a wireless terminal in a wireless network, a wireless terminal, a mobile station, a wireless network, a wireless terminal, a mobile station, a mobile terminal, a mobile.

The access network device includes, but is not limited to, a next generation base station (gNB), evolved node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), home base station (e.g., home evolved node B, or home node B), Base Band Unit (BBU), transmission point (TRP), transmission point (transceiver point, TP), mobile switching center, etc. the access network device may also be a cloud access network (cloud access network, RAN) device, which may also be a device that supports wireless communication with a terminal (cn), and may also be a device that supports wireless communication with a network under a future access network (cn), which may also be a device that supports wireless communication with a remote access network (MN), which may also be a device that supports wireless communication with a future access network (MN) and may also be a device that supports wireless communication with a network under a future access network (cn), which may also be a network device that supports wireless communication with a remote access network (MN) network (MN, a remote access network (cn), a network (MN), a device that supports wireless communication with a future access network (MN, a terminal, a network (MN), and a network (MN), which may also be a device that supports a network under a network (node B, a network, a device that supports wireless access network (node B, a future access network, a node B, a network, a node B) and a network (B) that may also may support a network, a terminal, a network that may also may support a network, a.

Some of the communication terms referred to in this application are explained below, and it is understood that the communication terms are also included as part of the inventive content of this application.

One, Master Cell Group (MCG) and auxiliary cell group (SCG)

One primary cell group includes one primary cell (primary cell), and optionally, one primary cell group may further include one or more secondary cells (scells). A secondary Cell group includes a Primary secondary Cell (Primary Scell), and optionally, a secondary Cell group may further include one or more secondary cells (scells).

One cell may correspond to one carrier, and thus, one master cell group may also include one master carrier, and optionally, one master cell group may further include one or more secondary carriers. One secondary cell group includes one primary secondary carrier, and optionally, one secondary cell group may further include one or more secondary carriers.

Two, CA power allocation and scaling

For Sub6G (6GHz carrier and below), the maximum bandwidth of 1 carrier is 100MHz, and the maximum bandwidth of 1 carrier at above6GHz ((6GHz carrier or above)) is 400 MHz. To further improve the throughput of the terminal, the terminal needs to use more bandwidth. The CA technology aggregates and uses a plurality of continuous or discontinuous frequency spectrums, technically solves the requirement of mobile communication on large bandwidth, and simultaneously improves the utilization rate of scattered frequency spectrums in wireless frequency bands.

When a terminal transmits a certain Channel/Signal on a carrier, for example, a Physical Random Access Channel (PRACH), a Physical Uplink Control Channel (PUCCH), a Physical Uplink Shared Channel (PUSCH), and a Sounding Reference Signal (SRS), the terminal needs to transmit with a certain power so that an Access network device can correctly analyze the Channel/Signal. When the terminal needs to perform uplink transmission on a plurality of carriers, the transmission power (expressed by using a logarithmic value) required for respective channel/signal transmission is independently calculated on each carrier, then the transmission power (expressed by using the logarithmic value) of each carrier expressed by using the logarithmic value is converted into a linear value and then added, and if the addition result is greater than the maximum transmission power (Pcmax) (expressed by using the linear value) of the terminal, the terminal needs to perform power scaling on the plurality of carriers of the CA, so that the power transmitted by the terminal is less than or equal to the Pcmax.

Three, synchronous DC, asynchronous DC

The synchronous DC means that the maximum downlink receiving timing deviation of the terminal between the primary cell and the primary and secondary cells is less than or equal to a timing deviation value, which may be 35.21 microseconds (us), for example.

The asynchronous DC means that the maximum downlink receiving timing deviation of the terminal between the primary cell and the primary and secondary cells is greater than a timing deviation value, and is smaller than a half slot length corresponding to a larger subcarrier interval in the primary and secondary cells, and the timing deviation value may be 35.21us, for example.

In order to solve the problems in the background art, the present application provides a communication method, which can control the transmission power of the MCG and the SCG, so that the sum of the transmission power of the MCG and the transmission power of the SCG is not greater than the maximum transmission power of the terminal.

It is understood that the method of the present application is applicable to DC of FR1(sub6GHz) + FR1(sub6GHz), i.e. the frequency of the carrier in both MCG and SCG is lower than 6GHz, and also applicable to DC of FR2(above6GHz) + FR2(above6GHz), i.e. the frequency of the carrier in both MCG and SCG is higher than 6 GHz.

It can be understood that the communication device in the method of the present application may be the terminal in fig. 1, or may be the access network device in fig. 1. For example, the communication device is a terminal, and when the terminal is transmitting channels and/or data to the access network device, the communication method of the present application may be implemented. For another example, the communication device is an access network device, and when the access network device is transmitting channels and/or data to a terminal or other access network devices, the communication method of the present application may be implemented.

Based on the architecture shown in fig. 1, the present application provides a communication method, as shown in fig. 2, the method includes the following steps:

in step 201, the communication device determines a second transmission power in the first cell group in the first time unit and a second transmission power in the second cell group in the second time unit according to the first transmission power in the first cell group in the first time unit and the first transmission power in the second cell group in the second time unit.

The sum of the first transmit power of the communication device in the first time unit in the first cell group and the first transmit power of the communication device in the second time unit in the second cell group is greater than the maximum transmit power of the communication device.

The first cell group is MCG and the second cell group is SCG. Or the first cell group is SCG, and the second cell group is MCG. It is to be understood that the present application is not limited to the number of the first cell group and the number of the second cell group. For convenience of explanation, a first cell group and a second cell group are taken as an example for explanation.

The first time unit comprises a time unit which is overlapped with a second time interval corresponding to the second cell group in a first time interval corresponding to the first cell group, and the second time unit comprises a time unit which is overlapped with the first time interval corresponding to the first cell group in a second time interval corresponding to the second cell group. And the first transmission power of the communication equipment in the second cell group in the second time unit is different from the third transmission power of the communication equipment in the third time unit and the second cell group, and the third time unit is a time unit which is overlapped with the first time interval corresponding to the first cell group in the third time interval corresponding to the second cell group.

In step 202, the communication device transmits channels and/or signals in the first cell group in the first time unit based on the second transmit power in the first cell group in the first time unit, and transmits channels and/or signals in the second cell group in the second time unit based on the second transmit power in the second cell group in the second time unit.

It is understood that the present application divides the maximum power of the communication device into a guaranteed power (configured power) of the first cell group, a guaranteed power (remaining power) of the second cell group, and a remaining power (remaining power). I.e. the sum of the guaranteed power of the first cell group, the guaranteed power of the second cell group and the remaining power is equal to the maximum power of the communication device. Fig. 3 is a schematic diagram of power division. And the guaranteed power of the first cell group meets the first cell group preferentially, and the guaranteed power of the second cell group meets the second cell group preferentially.

Wherein the guaranteed power of the first cell group, the guaranteed power of the second cell group and the remaining power may be pre-configured, such as predefined, or configured to the communication device by other devices. For example, when the communication device is a terminal, the terminal may receive information of the guaranteed power of the first cell group and information of the guaranteed power of the second cell group from the access network device. For example, in one implementation, the access network device configures the guaranteed power of the first cell group and the guaranteed power of the second cell group to the terminal by indicating a percentage of a maximum transmit power (Pcmax) of the terminal through Radio Resource Control (RRC) signaling. For example, the information of the guaranteed power of the first cell group in the RRC signaling may be one of the following percentages: { 0%, 5%, 10%, 15%, 20%, 37%, 44%, 50%, 56%, 63%, 70%, 80%, 90%, 95%, 100% }, the information of the guaranteed power of the second cell group in the RRC signaling may be one of the following percentages: { 0%, 5%, 10%, 15%, 20%, 37%, 44%, 50%, 56%, 63%, 70%, 80%, 90%, 95%, 100% }, so that the terminal can determine the guaranteed power of the first cell group and the guaranteed power of the second cell group according to the percentages.

This is illustrated below with reference to examples. For example, the access network sends to the terminal (i.e., communication device) through RRC signaling: 10%, 20%, the terminal may determine that the guaranteed power of the first cell group is equal to Pcmax 10%, the guaranteed power of the second cell group is equal to Pcmax 20%, and the remaining power is equal to Pcmax 70%. For another example, the access network sends to the terminal (i.e., communication device) through RRC signaling: 100%, 0%, the terminal may determine that the guaranteed power for the first cell group is equal to Pcmax, the guaranteed power for the second cell group is equal to 0, and determine that the remaining power is equal to 0, and so on. It is understood that Pcmax in the present application denotes a linear value of the maximum transmission power of the terminal.

In the above step 201, when the communication device needs to transmit the channel and/or signal in the first cell group in the first time unit and needs to transmit the channel and/or signal in the second cell group in the second time unit, and the sum of the first transmission power of the first cell group and the first transmission power of the communication device in the second time unit and the first transmission power of the second cell group in the first time unit is greater than the maximum transmission power of the communication device, the communication device needs to perform power control, determine that the sum of the second transmission power of the communication device in the first time unit and the first transmission power of the first cell group in the second time unit and the second transmission power of the second cell group in the second time unit is less than or equal to the maximum transmission power of the communication device in the first time unit, i.e. not exceeding the maximum transmit power of the communication device.

For convenience of explanation, the first cell group and the second cell group are referred to as CG1 and CG2, respectively, in the following. The first time interval, the second time interval, and the third time interval are referred to as T1, T2, and T3, respectively, and the first time unit, the second time unit, the third time unit, and the fourth time unit are referred to as E1, E2, E3, and E4, respectively. The guaranteed power of the first cell group, the guaranteed power of the second cell group, and the remaining power are referred to as Pc1, Pc2, and Pr, respectively. The maximum transmit power of the communication device is referred to as Pcmax.

Further, the present application is defined as follows: pijk denotes the k-th transmit power of the communication device in cell group j within time unit i.

Thus, P111 represents a first transmit power of the communication device in the first cell group for the first time unit, and P112 represents a second transmit power of the communication device in the first cell group for the first time unit. P111 may also be referred to as the initial transmit power (or the transmit power before power control) of the communication device in the first cell group in the first time unit, and P112 may also be referred to as the transmit power after power control of the communication device in the first time unit in the first cell group.

P221 represents a first transmit power of the communication device at the second cell group in the second time unit, and P222 represents a second transmit power of the communication device at the second cell group in the second time unit. Wherein, P221 may also be referred to as the initial transmission power (or the transmission power before power control) of the communication device in the second cell group in the second time unit, and P222 may also be referred to as the transmission power of the communication device after power control of the second cell group in the second time unit.

P323 represents a third transmit power of the communication device at the second cell group for a third time unit. It is to be understood that the third transmit power refers to the actual transmit power of the communication device in the second cell group in the third time unit, i.e. the communication device transmits channels and/or signals in the second cell group in the third time unit using the third transmit power of the communication device in the second cell group in the third time unit.

P414 represents a fourth transmit power of the communication device in the first cell group for a fourth time unit. It is to be understood that the fourth transmit power refers to the actual transmit power of the communication device in the first cell group in the fourth time unit, i.e. the communication device transmits channels and/or signals in the first cell group in the fourth time unit using the fourth transmit power of the communication device in the fourth time unit in the first cell group.

The relationship between the time units will be described below. E1 includes a time cell within T1 corresponding to CG1 that overlaps with T2 corresponding to CG2, and E2 includes a time cell within T2 corresponding to CG2 that overlaps with T1 corresponding to CG 1. Thus, the time interval occupied by E1 overlaps with the time occupied by E2. E3 includes time cells within T3 corresponding to CG2 that overlap with T1 corresponding to CG 1. E4 includes time cells within T1 corresponding to CG1 that overlap with T3 corresponding to CG 2. Thus, the time interval occupied by E3 overlaps with the time occupied by E4. It is understood that E1, E3 are time cells within T1, and E2, E4 are time cells within T2 and T3, respectively.

Fig. 4 is a diagram illustrating an example of time units and time intervals provided in the present application. Wherein, the CG1 corresponds to the time interval T1, the CG2 corresponds to the time intervals T2 and T3, and the CG1 is on E1 within T1 and temporally overlaps with the CG2 on E2 within T2. And at the overlapping time, the sum of the first transmit power at CG1 (i.e., the transmit power before power control) and the first transmit power at CG2 (i.e., the transmit power before power control) of the communication device is greater than the maximum transmit power of the communication device, and therefore power control of the communication device is required. Further, the first transmission power of the communication device within E2 at CG2 is different from the third transmission power of the communication device within E3 at CG2, and as can be seen from fig. 4, the transmission power of the two CGs 2 on E2 and E4, respectively, i.e. the transmission power of CG2 may vary in different time units overlapping with T1 of CG 1. Similarly, the emission power of CG1 may or may not be changed at time units (e.g., at E1 and E4) that overlap differently with T2 and T3 of CG2, respectively.

The following explains a specific implementation method of step 201 in the embodiment of fig. 2.

In one implementation, if P111> Pr + Pc1 and P221< ═ Pc2, the communication device reduces the transmission power of the communication device in the first cell group in the first time unit, and maintains the transmission power of the communication device in the second cell group in the second time unit, so that P222 is P221 and P112+ P222< ═ Pcmax.

In this scheme, the CG1 may use power that is not used by the CG2 among the guaranteed power of the CG2, and thus the transmission power of the CG1 is Pc1+ Pr + Pc2 at most. Similarly, the CG2 may use the power that is not used by the CG1 in the guaranteed power of the CG1, and thus the transmission power of the CG2 is at most Pc1+ Pr + Pc 2.

This is illustrated below with reference to examples.

As shown in fig. 5(a), a power control diagram provided by the present application is illustrated, in which an asynchronous DC is taken as an example. It can be seen that P111+ P221> Pcmax and therefore power control is required. Wherein, P111> Pr + Pc1, a possible implementation manner of the first implementation method is: the method includes reducing a transmit power of the communication device in the first cell group for a first time unit and maintaining the transmit power of the communication device in the second cell group for a second time unit. Referring to fig. 5(a), the transmission power of the communication device in the first cell group is reduced from P111 to P112 in the first time unit, and the transmission power of the communication device in the second cell group is maintained unchanged in the second time unit (i.e., P222 — P221). After the power control, P112+ P222< ═ Pcmax. Therefore, after the power control, the sum of the transmission power of the communication device in the first cell group (namely, P112) in the first time unit and the transmission power of the communication device in the second cell group (namely, P222) in the second time unit does not exceed Pcmax, so that the power control is realized, and the correct communication is facilitated.

As shown in fig. 5(b), a power control diagram provided by the present application is illustrated, in which synchronous DC is taken as an example. Its implementation method is similar to that of the power control shown in fig. 5(a), and reference may be made to the description of the foregoing example.

It will be appreciated that, for the example of fig. 5(a) or 5(b) above, the method for reducing the transmit power of the communication device in the first cell group in the first time unit for the communication device may include, but is not limited to, the following three types:

method a, the communication device reducing the transmission power of the communication device in the first cell group in the first time unit, means: the communication device reduces the transmit power of the PRACH, and/or the transmit power of the PUCCH, and/or the transmit power of the PUSCH, and/or the transmit power of the SRS for the first time unit, resulting in P112.

Namely, the transmission power of the PRACH in the first cell group and/or the transmission power of the PUCCH and/or the transmission power of the PUSCH and/or the transmission power of the SRS of the communication device is reduced, so that P112+ P221< ═ Pcmax, then P222 ═ P221.

Method B, the communication device reducing the transmission power of the communication device in the first cell group in the first time unit, means: the communication device reduces the transmission power of the PUSCH without transmitting ACK/NACK/CSI, and/or the transmission power of the SRS for the first cell group for the first time unit, resulting in P112.

That is, the transmission power of the PUSCH and/or the SRS of the first cell group in which the communication apparatus does not transmit ACK/NACK/CSI in the first time unit is preferentially reduced, and if P112+ P221< ═ Pcmax is enabled, P222 is P221. Further, if P112+ P221 is still greater than Pcmax after the communication device reduces the transmission power of the PUSCH and the SRS of the first cell group without transmitting ACK/NACK/CSI to 0 in the first time unit, the transmission power of the communication device in the second cell group in the second time unit may also be reduced, P222< P221, and P112+ P222< ═ Pcmax is satisfied.

Method C, the communication device reducing the transmission power of the communication device in the first cell group in the first time unit, means: the communication device reduces the transmit power of the PRACH of the first cell group and/or the transmit power of the PUCCH and/or the transmit power of the PUSCH transmitting the ACK/NACK/CSI within the first time unit, resulting in P112.

That is, the transmission power of the PRACH in the first cell group and/or the transmission power of the PUCCH and/or the transmission power of the PUSCH for transmitting ACK/NACK/CSI in the first time unit are preferentially reduced, and if P112+ P221 ═ Pcmax is enabled, P222 ═ P221. Further, if P112+ P221 is still greater than Pcmax after the communication device reduces the transmission power of the PRACH, the transmission power of the PUCCH, and the transmission power of the PUSCH for transmitting ACK/NACK/CSI to 0 in the first time unit, the transmission power of the communication device in the second cell group in the second time unit may also be reduced, P222< P221, and P112+ P222< Pcmax is satisfied.

It can be understood that, as an implementation method, after calculating the first transmission power P111_1 of the communication device in the first time interval, the PRACH channel and/or the PUCCH channel of the primary carrier of the first cell group, and/or the PUSCH transmitting ACK/NACK/CSI, if it is determined that P111_1> Pc1+ Pr, the communication device may directly scale (i.e., reduce) the transmission power of the above-mentioned channels of the communication device in the first time interval, for example, may reduce the sum of the transmission powers of the above-mentioned channels of the communication device in the first time interval to Pc1+ Pr or to a smaller value (i.e., a value smaller than Pc1+ Pr); if the communication device determines that the sum of the first transmission power P111 of the first group and the first transmission power P221 of the second group in the first time unit is greater than Pcmax, the terminal may further use the method a, the method B, or the method C, so that P112+ P222< ═ Pcmax; the reason for this implementation is: the terminal does not generate mutation in the PRACH channel and/or PUCCH channel of the main carrier of the first cell group and/or PUSCH channel for transmitting ACK/NACK/CSI in the first time interval, thereby being helpful for ensuring that the base station can correctly demodulate the more important information.

For the method a, the method B, or the method C, the transmit power of the channel with the smaller channel priority may be sequentially reduced according to the following channel priorities until the power control requirement is satisfied:

priority 1: PRACH on the primary cell;

priority 2: a PUCCH for transmitting ACK/NACK/SR; a PUSCH transmitting ACK/NACK;

priority 3: a PUCCH for transmitting CSI; a PUSCH for transmitting CSI;

priority 4: PUSCH without ACK/NACK/CSI transmitted;

priority 5: SRS; PRACH on the secondary cell.

The priority of the channel is, from large to small (or referred to as high to low), as follows: priority 1> priority 2> priority 3> priority 4> priority 5.

Wherein, the priority of PUCCH for transmitting ACK/NACK/SR is the same as that of PUSCH for transmitting ACK/NACK. The SRS is the same priority as the PRACH on the secondary cell. The priority of the PUCCH transmitting the CSI is the same as that of the PUSCH transmitting the CSI.

Implementing method two, if P111> Pr + Pc1 and P221< ═ Pc2, the communication device reduces the transmission power of the communication device in the first cell group in the first time unit, and maintains the transmission power of the communication device in the second cell group in the second time unit, so that P222 is P221 and P112< ═ Pc1+ Pr.

In this scheme, the CG1 does not always preempt the guaranteed power Pc2 of the CG2, i.e. the transmission power of the CG1 is Pc1+ Pr at most.

This is illustrated below with reference to examples.

As shown in fig. 6(a), a power control diagram provided by the present application is illustrated, in which an asynchronous DC is taken as an example. It can be seen that P111+ P221> Pcmax and therefore power control is required. Wherein, P111> Pr + Pc1, the specific implementation method of the second implementation method is: reducing the transmission power of the communication device in the first cell group in the first time unit so that the transmission power of the communication device in the first cell group in the first time unit is not greater than Pr + Pc1, and maintaining the transmission power of the communication device in the second cell group in the second time unit. Referring to fig. 6(a), the transmission power of the communication device in the first cell group is reduced from P111 to P112 in the first time unit, and the transmission power of the communication device in the second cell group is maintained unchanged in the second time unit (i.e., P222 — P221). And, P112< ═ Pc1+ Pr. Therefore, after the power control, the sum of the transmission power of the communication device in the first cell group (namely, P112) in the first time unit and the transmission power of the communication device in the second cell group (namely, P222) in the second time unit does not exceed Pcmax, so that the power control is realized, and the correct communication is facilitated.

As shown in fig. 6(b), a power control diagram provided by the present application is illustrated, in which synchronous DC is taken as an example. Its implementation method is similar to that of the power control shown in fig. 6(a), and reference may be made to the description of the foregoing example.

And if P111> Pc1 and P221> Pc2 are realized, the communication equipment performs power control in Pr according to the channel priority and/or the carrier priority of the first cell group and the second cell group so as to determine P112 and P222.

In this scheme, the CG1 does not always preempt the guaranteed power Pc2 of the CG2, i.e. the transmission power of the CG1 is Pc1+ Pr at most. Likewise, the CG2 does not always preempt the guaranteed power Pc1 of the CG1, i.e. the transmission power of the CG2 is at most Pc2+ Pr.

As a possible implementation method, the communication device performs power control in Pr according to the channel priority and/or carrier priority of the first cell group and the second cell group, and determines P112 and P222, which specifically includes:

if the channel priorities of the first cell group and the second cell group are different, the communication device performs power control in Pr, performs power control on a channel with a lower channel priority in the first cell group and the second cell group, and determines P112 and P222, where the channel priorities may refer to the foregoing description, and are not described herein again.

If the channel priorities of the first cell group and the second cell group are the same, the communication equipment performs power control on the cell group with lower carrier priority in the first cell group and the second cell group in Pr, and determines P112 and P222, wherein the carrier priorities are as follows from high to low: a main cell in the main cell group, a main and an auxiliary cell in the auxiliary cell group, and an auxiliary cell in the main cell group or the auxiliary cell group.

This is illustrated below with reference to examples.

As shown in fig. 7(a), a power control diagram provided by the present application is illustrated, in which an asynchronous DC is taken as an example. It can be seen that P111+ P221> Pcmax and therefore power control is required. Wherein, P111> Pc1 and P221> Pc2, the third implementation method is as follows: and performing power control in Pr. Referring to fig. 7(a), the channel priority of CG1 is higher, so the power in Pr is preferentially allocated to CG1, so P112 after power control is Pc1+ Pr and P222 is Pc 2. Therefore, after the power control, the sum of the transmission power of the communication device in the first cell group (namely, P112) in the first time unit and the transmission power of the communication device in the second cell group (namely, P222) in the second time unit does not exceed Pcmax, so that the power control is realized, and the correct communication is facilitated.

As shown in fig. 7(b), a power control diagram provided by the present application is illustrated, in which an asynchronous DC is taken as an example. It can be seen that P111+ P221> Pcmax and therefore power control is required. Wherein, P111> Pc1 and P221> Pc2, the third implementation method is as follows: power control is performed within Pr. Referring to fig. 7(b), the channel priority of CG2 is higher, so power in Pr is preferentially allocated to CG2, so power-controlled P112 ═ Pc1+ Pr1, P222 ═ P221, and Pr1 ═ Pc2+ Pr-P222. Therefore, after the power control, the sum of the transmission power of the communication device in the first cell group (namely, P112) in the first time unit and the transmission power of the communication device in the second cell group (namely, P222) in the second time unit does not exceed Pcmax, so that the power control is realized, and the correct communication is facilitated.

As shown in fig. 7(c), a power control diagram provided by the present application is illustrated, in which synchronous DC is taken as an example. Its implementation method is similar to that of the power control shown in fig. 7(a), and reference may be made to the description of the foregoing example.

As shown in fig. 7(d), a power control diagram provided by the present application is illustrated, in which synchronous DC is taken as an example. Its implementation method is similar to that of the power control shown in fig. 7(b), and reference may be made to the description of the foregoing example.

Optionally, any of the above embodiments in the present application may be taken as independent embodiments, or may be combined with each other, and in particular, the present application is not limited thereto.

It can be understood that, in the present application, the first implementation method, the second implementation method, and the third implementation method may be classified according to a guaranteed power sharing manner (that may or may not share guaranteed power) and a DC mode (synchronous or asynchronous).

Wherein, the sharing mode of ensuring power refers to: whether the guaranteed power of a cell group (such as CG1 or CG2) can be shared to be used by other cell groups is divided into the sharable guaranteed power and the non-sharable guaranteed power. For example, if the sharing method is to share the guaranteed power, the CG1 may use the guaranteed power of the CG2, and the CG2 may also use the guaranteed power of the CG 1. For another example, if the sharing mode is that the guaranteed power cannot be shared, the CG1 may not use the guaranteed power of the CG2, and the CG2 may not use the guaranteed power of the CG 1.

Method a, guaranteed power can be shared. The method is specifically divided into the following two methods:

method a1, guaranteed power can be shared and asynchronous mode.

In case one, if P111> Pr + Pc1 and P221< ═ Pc2, the communication device reduces the transmission power of the communication device in the first cell group in the first time unit, and maintains the transmission power of the communication device in the second cell group in the second time unit, so that P222 is P221 and P112+ P222< ═ Pcmax.

An example of this situation may refer to fig. 5 (a).

In case two, if P111> Pc1 and P221> Pc2, the communications device performs power control within Pr according to the channel priority and/or carrier priority of the first cell group and the second cell group to determine P112 and P222.

An example of this situation may refer to fig. 7 (a).

Method a2, guaranteed power can be shared and in synchronous mode.

An example of this situation may refer to fig. 5 (b).

An example of this situation may refer to fig. 7 (c).

Method b, guaranteed power may not be shared. The method is specifically divided into the following two methods:

method b1, guaranteed power may not be shared and is in asynchronous mode.

In case one, if P111> Pr + Pc1 and P221< ═ Pc2, the communication device reduces the transmission power of the communication device in the first cell group in the first time unit, and maintains the transmission power of the communication device in the second cell group in the second time unit, so that P222 is P221 and P112< ═ Pc1+ Pr.

An example of this situation may refer to fig. 6 (a).

An example of this situation may refer to fig. 7 (b).

Method b2, guaranteed power may not be shared and is in synchronous mode.

An example of this situation may refer to fig. 6 (b).

An example of this situation may refer to fig. 7 (d).

It is to be understood that, in order to implement the above functions, the above network elements include corresponding hardware structures and/or software modules for executing the functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

As shown in fig. 8, which is a possible exemplary block diagram of a communication device according to the present application, the communication device 800 may be in the form of software or hardware. The communication device 800 may include: a processing unit 802 and a communication unit 803. As an implementation manner, the communication unit 803 may include a receiving unit and a transmitting unit. Processing section 802 is configured to control and manage the operation of communication apparatus 800. The communication unit 803 is used to support communication of the communication apparatus 800 with other network entities. The communication device 800 may further comprise a memory unit 801 for storing program codes and data of the communication device 800.

The processing unit 802 may be a processor or a controller, and may be, for example, a general-purpose Central Processing Unit (CPU), a general-purpose processor, a Digital Signal Processing (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 803 may be a communication interface, a transceiver, a transceiving circuit, or the like, wherein the communication interface is referred to as a generic term, and in a specific implementation, the communication interface may include a plurality of interfaces. The storage unit 801 may be a memory.

The communication device 800 may be the communication device in any of the above embodiments, and may also be a chip for a communication device. For example, when the communication apparatus 800 is a communication device, the processing unit 802 may be a processor, for example, and the communication unit 803 may be a transceiver, for example. Optionally, the transceiver may comprise radio frequency circuitry and the storage unit may be, for example, a memory. For example, when the communication apparatus 800 is a chip for a communication device, the processing unit 802 may be a processor, and the communication unit 803 may be an input/output interface, a pin, a circuit, or the like. The processing unit 802 can execute computer-executable instructions stored in a storage unit, optionally, the storage unit is a storage unit in the chip, such as a register, a cache, and the like, and the storage unit can also be a storage unit located outside the chip in the communication device, such as a read-only memory (ROM) or another type of static storage device that can store static information and instructions, a Random Access Memory (RAM), and the like.

A processing unit 802 configured to determine, according to a first transmit power in a first time unit in a first cell group and a first transmit power in a second time unit in a second cell group, a second transmit power in the first time unit in the first cell group and a second transmit power in the second time unit in the second cell group, a sum of the first transmit power in the first time unit in the first cell group and the first transmit power in the second cell group by the communication apparatus being greater than a maximum transmit power of the communication apparatus. A communication unit 803 for transmitting channels and/or signals in the first cell group in the first time unit according to a second transmission power in the first cell group in the first time unit, and for transmitting channels and/or signals in the second cell group in the second time unit according to a second transmission power in the second cell group in the second time unit; wherein the first time unit comprises a time unit within a first time interval corresponding to the first cell group that overlaps with a second time interval corresponding to the second cell group, the second time unit comprising a time unit within the second time interval corresponding to the second cell group that overlaps with the first time interval corresponding to the first cell group; a first transmit power of the communication apparatus within the second time unit in the second cell group is different from a third transmit power of the communication apparatus within a third time unit in the second cell group, the third time unit comprising a time unit within a third time interval corresponding to the second cell group that overlaps the first time interval corresponding to the first cell group; the first cell group and the second cell group are respectively one of a master cell group and a secondary cell group, the master cell group comprises a master cell, and the secondary cell comprises a master and a secondary cell.

In one possible implementation, the first transmit power of the communication device in the first time unit in the first cell group is greater than a sum of a remaining power and a guaranteed power of the first cell group, and the first transmit power of the communication device in the second time unit in the second cell group is not greater than the guaranteed power of the second cell group; the processing unit 802, specifically configured to reduce the transmit power of the communication device in the first cell group in the first time unit; wherein a second transmit power of the communication device in the second cell group in the second time unit is equal to a first transmit power of the communication device in the second time unit in the second cell group, and a sum of the second transmit power of the communication device in the first time unit in the first cell group and the second transmit power of the communication device in the second time unit in the second cell group is less than or equal to a maximum transmit power of the communication device; the sum of the guaranteed power of the first cell group, the guaranteed power of the second cell group and the remaining power is equal to the maximum transmit power of the communication device.

In a possible implementation method, the processing unit 802 is specifically configured to: reducing the transmission power of the communication device in the first time unit and in a Physical Random Access Channel (PRACH), a Physical Uplink Control Channel (PUCCH), a Physical Uplink Shared Channel (PUSCH) or a Sounding Reference Signal (SRS) of the first cell group; or the communication device reduces the transmission power of the PUSCH without ACK/NACK/CSI or SRS of the first cell group in the first time unit; or the communication device reduces the transmission power of the communication device in the first time unit, in the PRACH, PUCCH, or PUSCH transmitting ACK/NACK/CSI of the first cell group.

In one possible implementation, the first transmit power of the communication device in the first cell group is greater than the sum of the remaining power and the guaranteed power of the first cell group in the first time unit, and the first transmit power of the communication device in the second cell group in the second time unit is less than the guaranteed power of the second cell group; the processing unit 802, specifically configured to reduce the transmit power of the communication device in the first cell group in the first time unit; wherein a second transmit power of the communication device in the second cell group in the second time unit is equal to a first transmit power of the communication device in the second cell group in the second time unit, the second transmit power of the communication device in the first cell group in the first time unit is not greater than a sum of a remaining power and a guaranteed power of the first cell group; the sum of the guaranteed power of the first cell group, the guaranteed power of the second cell group and the remaining power is equal to the maximum transmit power of the communication device.

In one possible implementation, the first transmit power of the communication device in the first time unit in the first cell group is greater than a guaranteed power of the first cell group, and the first transmit power of the communication device in the second cell group in the second time unit is greater than a guaranteed power of the second cell group; the processing unit 802 is specifically configured to perform power control within the remaining power according to the channel priority and/or the carrier priority of the first cell group and the second cell group, and determine a second transmit power in the first time unit in the first cell group and a second transmit power in the second time unit in the second cell group; wherein a sum of the guaranteed power of the first cell group, the guaranteed power of the second cell group, and the remaining power is equal to a maximum transmit power of the communication device.

In a possible implementation method, the channel priorities of the first cell group and the second cell group are different, and the processing unit 802 is specifically configured to perform power control in the remaining power, perform power control on a channel with a lower channel priority in the first cell group and the second cell group, and determine a second transmit power in the first time unit in the first cell group and a second transmit power in the second time unit in the second cell group, where the channel priorities are, in order from high to low: the physical uplink shared channel comprises a PRACH on a main cell, a PUCCH for transmitting ACK/NACK/SR or a PUSCH for transmitting ACK/NACK, a PUCCH or PUSCH for transmitting CSI, a PUSCH without transmitting ACK/NACK/CSI, an SRS or a PRACH on a secondary cell; or, the channel priorities of the first cell group and the second cell group are the same, and the processing unit 802 is specifically configured to perform power control on a cell group with a lower carrier priority in the first cell group and the second cell group within the remaining power, determine a second transmit power in the first cell group in the first time unit and a second transmit power in the second time unit in the second cell group, where the carrier priorities are, in order from high to low: a main cell in the main cell group, a main and auxiliary cell in the auxiliary cell group, and an auxiliary cell in the main cell group or the auxiliary cell group; the first cell group further includes at least one secondary cell, the first cell group further includes at least one secondary cell.

It can be understood that, when the communication apparatus is used in the foregoing communication method, specific implementation procedures and corresponding beneficial effects may refer to the related description in the foregoing method embodiment, and are not described herein again.

Referring to fig. 9, a schematic diagram of a communication device according to the present application is shown, where the communication device may be the communication device. The communication apparatus 900 includes: a processor 902, a communication interface 903, and a memory 901. Optionally, communications device 900 may also include communications link 904. Wherein the communication interface 903, the processor 902, and the memory 901 may be connected to each other through a communication line 904; the communication line 904 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication lines 904 may be divided into address buses, data buses, control buses, and the like. For ease of illustration, only one thick line is shown in FIG. 9, but this does not indicate only one bus or one type of bus.

The processor 902 may be a CPU, microprocessor, ASIC, or one or more integrated circuits configured to control the execution of programs in accordance with the teachings of the present application.

The communication interface 903 may be any device, such as a transceiver, for communicating with other devices or communication networks, such as AN ethernet, a Radio Access Network (RAN), a wireless local area network (W L AN), a wired access network, and the like.

The memory 901 may be, but is not limited to, a ROM or other type of static storage device that can store static information and instructions, a RAM or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a CD-ROM or other optical disk storage, an optical disk storage (including a compact disk, a laser disk, an optical disk, a digital versatile disk, a blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be separate and coupled to the processor via a communication line 904. The memory may also be integral to the processor.

The memory 901 is used for storing computer-executable instructions for executing the scheme of the present application, and is controlled by the processor 902 to execute. The processor 902 is configured to execute computer-executable instructions stored in the memory 901, so as to implement the communication method provided by the above-mentioned embodiment of the present application.

Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

Those of ordinary skill in the art will understand that: the various numbers of the first, second, etc. mentioned in this application are only used for the convenience of description and are not used to limit the scope of the embodiments of this application, but also to indicate the sequence. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one" means one or more. At least two means two or more. "at least one," "any," or similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one (one ) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, e.g., from one website site, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DS L)) or wireless (e.g., infrared, wireless, microwave, etc.) manner to another website site, computer, server, or data center.

The various illustrative logical units and circuits described in this application may be implemented or operated upon by design of a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

The steps of a method or algorithm described in the embodiments herein may be embodied directly in hardware, in a software element executed by a processor, or in a combination of the two. The software cells may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. For example, a storage medium may be coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC, which may be disposed in a terminal. In the alternative, the processor and the storage medium may reside in different components within the terminal.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include such modifications and variations.

Claims

1. A method of communication, comprising:

a communication device determining, from a first transmit power in a first time unit in a first cell group and a first transmit power in a second time unit in a second cell group, a second transmit power in the first time unit in the first cell group and a second transmit power in the second time unit in the second cell group, a sum of the first transmit power in the first time unit in the first cell group and the first transmit power in the second time unit in the second cell group being greater than a maximum transmit power of the communication device;

the communication device transmitting channels and/or signals in the first cell group in the first time unit according to a second transmit power in the first cell group in the first time unit and transmitting channels and/or signals in the second cell group in the second time unit according to a second transmit power in the second cell group in the second time unit;

wherein the first time unit comprises a time unit within a first time interval corresponding to the first cell group that overlaps with a second time interval corresponding to the second cell group, the second time unit comprising a time unit within the second time interval corresponding to the second cell group that overlaps with the first time interval corresponding to the first cell group;

a first transmit power of the communication apparatus within the second time unit in the second cell group is different from a third transmit power of the communication apparatus within a third time unit in the second cell group, the third time unit comprising a time unit within a third time interval corresponding to the second cell group that overlaps the first time interval corresponding to the first cell group;

the first cell group and the second cell group are respectively one of a master cell group and a secondary cell group, the master cell group comprises a master cell, and the secondary cell comprises a master and a secondary cell.

2. The method of claim 1, wherein the first transmit power of the communication device in the first cell group is greater than a sum of a remaining power and a guaranteed power of the first cell group for the first time unit, and the first transmit power of the communication device in the second cell group is not greater than the guaranteed power of the second cell group for the second time unit;

the communication device determining a second transmit power in the first time unit in the first cell group and a second transmit power in the second time unit in the second cell group, comprising:

the communications device reducing a transmit power of the communications device at the first cell group for the first time unit;

wherein a second transmit power of the communication device in the second cell group in the second time unit is equal to a first transmit power of the communication device in the second time unit in the second cell group, and a sum of the second transmit power of the communication device in the first time unit in the first cell group and the second transmit power of the communication device in the second time unit in the second cell group is less than or equal to a maximum transmit power of the communication device;

the sum of the guaranteed power of the first cell group, the guaranteed power of the second cell group and the remaining power is equal to the maximum transmit power of the communication device.

3. The method of claim 2, wherein the communication device reducing the transmission power of the communication device in the first cell group for the first time unit comprises:

the communication equipment reduces the transmission power of the communication equipment in the first time unit and in a Physical Random Access Channel (PRACH), a Physical Uplink Control Channel (PUCCH), a Physical Uplink Shared Channel (PUSCH) or a Sounding Reference Signal (SRS) of the first cell group; alternatively, the first and second electrodes may be,

the communication device reducing a transmit power of a PUSCH of the first cell group for which no ACK/NACK/CSI is transmitted, or an SRS by the communication device for the first time unit; alternatively, the first and second electrodes may be,

the communication device reduces a transmit power of the communication device for the first time unit, for a PRACH, a PUCCH, or a PUSCH transmitting ACK/NACK/CSI in the first cell group.

4. The method of claim 2 or 3, wherein a first transmit power of the communication device in the first time unit for the first group of cells is different from a fourth transmit power of the communication device in a fourth time unit for the first group of cells, the fourth time unit comprising a time unit of the first time interval corresponding to the first group of cells that overlaps the third time interval corresponding to the second group of cells.

5. The method of claim 1, wherein the first transmit power of the communication device in the first cell group is greater than a sum of a remaining power and a guaranteed power of the first cell group for the first time unit, and the first transmit power of the communication device in the second cell group is less than the guaranteed power of the second cell group for the second time unit;

wherein a second transmit power of the communication device in the second cell group in the second time unit is equal to a first transmit power of the communication device in the second cell group in the second time unit, the second transmit power of the communication device in the first cell group in the first time unit is not greater than a sum of a remaining power and a guaranteed power of the first cell group;

6. The method of claim 1, wherein the first transmit power of the communication device in the first time unit at the first cell group is greater than a guaranteed power of the first cell group, and the first transmit power of the communication device in the second cell group is greater than a guaranteed power of the second cell group in the second time unit;

the communication device performs power control in the residual power according to the channel priority and/or the carrier priority of the first cell group and the second cell group, and determines a second transmission power in the first time unit and the second transmission power in the second cell group in the second time unit;

wherein a sum of the guaranteed power of the first cell group, the guaranteed power of the second cell group, and the remaining power is equal to a maximum transmit power of the communication device.

7. The method of claim 6, wherein the communication device performing power control in the remaining power according to channel priority and/or carrier priority of the first cell group and the second cell group, determining a second transmit power in the first time unit in the first cell group and a second transmit power in the second time unit in the second cell group, comprising:

the channel priorities of the first cell group and the second cell group are different, the communication device performs power control in the residual power, performs power control on a channel with a lower channel priority in the first cell group and the second cell group, and determines a second transmission power of the first cell group in the first time unit and a second transmission power of the second cell group in the second time unit, wherein the channel priorities are as follows from high to low: the physical uplink shared channel comprises a PRACH on a main cell, a PUCCH for transmitting ACK/NACK/SR or a PUSCH for transmitting ACK/NACK, a PUCCH or PUSCH for transmitting CSI, a PUSCH without transmitting ACK/NACK/CSI, an SRS or a PRACH on a secondary cell; alternatively, the first and second electrodes may be,

the channel priority of the first cell group is the same as that of the second cell group, the communication device performs power control on the cell group with lower carrier priority in the first cell group and the second cell group in the residual power, and determines a second transmission power of the first cell group in the first time unit and a second transmission power of the second cell group in the second time unit, wherein the carrier priority is sequentially from high to low: a main cell in the main cell group, a main and auxiliary cell in the auxiliary cell group, and an auxiliary cell in the main cell group or the auxiliary cell group; the first cell group further includes at least one secondary cell, the first cell group further includes at least one secondary cell.

8. A communications apparatus, comprising:

a processing unit configured to determine a second transmit power in the first time unit in the first cell group and a second transmit power in the second time unit in the second cell group based on a first transmit power in the first time unit in the first cell group and a first transmit power in the second time unit in the second cell group, a sum of the first transmit power in the first time unit in the first cell group and the first transmit power in the second time unit in the second cell group being greater than a maximum transmit power of the communication apparatus;

a communication unit for transmitting channels and/or signals in the first time unit in the first cell group according to a second transmission power in the first time unit in the first cell group and for transmitting channels and/or signals in the second time unit in the second cell group according to a second transmission power in the second time unit in the second cell group;

a first transmit power of the communication device within the second time unit for the second cell group is different from a third transmit power of the communication device within a third time unit for the second cell group, the third time unit comprising a time unit within a third time interval corresponding to the second cell group that overlaps the first time interval corresponding to the first cell group;

9. The communications apparatus of claim 8, wherein the communications apparatus has a first transmit power at the first cell group that is greater than a sum of a remaining power and a guaranteed power for the first cell group for the first time unit, and has a first transmit power at the second cell group that is not greater than the guaranteed power for the second cell group for the second time unit;

the processing unit is specifically configured to reduce a transmit power of the communication device at the first cell group within the first time unit;

wherein a second transmit power of the communication apparatus in the second time unit at the second cell group is equal to a first transmit power of the communication apparatus in the second time unit at the second cell group, a sum of the second transmit power of the communication apparatus in the first time unit at the first cell group and the second transmit power of the communication apparatus in the second time unit at the second cell group is less than or equal to a maximum transmit power of the communication apparatus;

the sum of the guaranteed power of the first cell group, the guaranteed power of the second cell group, and the remaining power is equal to the maximum transmit power of the communication device.

10. The communications apparatus as claimed in claim 9, wherein the processing unit is specifically configured to:

reducing the transmission power of the communication device in the first time unit and in a Physical Random Access Channel (PRACH), a Physical Uplink Control Channel (PUCCH), a Physical Uplink Shared Channel (PUSCH) or a Sounding Reference Signal (SRS) of the first cell group; alternatively, the first and second electrodes may be,

reducing a transmit power of the communication device for the first time unit, a PUSCH of the first cell group for which ACK/NACK/CSI is not transmitted, or a SRS; alternatively, the first and second electrodes may be,

reducing a transmit power of the communication device for the first time unit, for a PRACH, a PUCCH, or a PUSCH transmitting ACK/NACK/CSI in the first cell group.

11. The communications apparatus of claim 9 or 10, wherein a first transmit power of the communications apparatus in the first time unit for the first cell group is different from a fourth transmit power of the communications apparatus in a fourth time unit for the first cell group, the fourth time unit comprising a time unit of the first time interval corresponding to the first cell group that overlaps with the third time interval corresponding to the second cell group.

12. The communications apparatus of claim 8, wherein the communications apparatus has a first transmit power at the first cell group that is greater than a sum of a remaining power and a guaranteed power for the first cell group for the first time unit, and has a first transmit power at the second cell group that is less than the guaranteed power for the second cell group for the second time unit;

wherein a second transmit power of the communication device in the second cell group for the second time unit is equal to a first transmit power of the communication device in the second cell group for the second time unit, a second transmit power of the communication device in the first cell group for the first time unit is not greater than a sum of a remaining power and a guaranteed power of the first cell group;

13. The communications apparatus of claim 8, wherein the communications apparatus has a first transmit power at the first cell group that is greater than a guaranteed power for the first cell group for the first time unit and a first transmit power at the second cell group that is greater than a guaranteed power for the second cell group for the second time unit;

the processing unit is specifically configured to perform power control within the remaining power according to the channel priority and/or the carrier priority of the first cell group and the second cell group, and determine a second transmit power in the first time unit in the first cell group and a second transmit power in the second time unit in the second cell group;

wherein a sum of the guaranteed power of the first cell group, the guaranteed power of the second cell group, and the remaining power is equal to a maximum transmit power of the communication apparatus.

14. The communications apparatus of claim 13, wherein the first cell group and the second cell group have different channel priorities, and wherein the processing unit is specifically configured to perform power control in the remaining power, perform power control on a channel of the first cell group and the second cell group having a lower channel priority, determine a second transmit power in the first time unit in the first cell group and a second transmit power in the second time unit in the second cell group, and wherein the channel priorities are, in order from high to low: the physical uplink shared channel comprises a PRACH on a main cell, a PUCCH for transmitting ACK/NACK/SR or a PUSCH for transmitting ACK/NACK, a PUCCH or PUSCH for transmitting CSI, a PUSCH without transmitting ACK/NACK/CSI, an SRS or a PRACH on a secondary cell; alternatively, the first and second electrodes may be,

the first cell group and the second cell group have the same channel priority, and the processing unit is specifically configured to perform power control on a cell group with a lower carrier priority in the first cell group and the second cell group within the remaining power, determine a second transmit power in the first time unit in the first cell group and a second transmit power in the second time unit in the second cell group, and sequentially perform, from high to low, the following steps: a main cell in the main cell group, a main and auxiliary cell in the auxiliary cell group, and an auxiliary cell in the main cell group or the auxiliary cell group; the first cell group further includes at least one secondary cell, the first cell group further includes at least one secondary cell.

15. A communications apparatus, comprising: a processor coupled with a memory, the memory for storing a program that, when executed by the processor, causes an apparatus to perform the method of any of claims 1 to 7.

16. A storage medium having stored thereon a computer program or instructions, which when executed cause a computer to perform the method of any of claims 1 to 7.

17. A chip system, comprising: a processor for performing the method of any one of claims 1 to 7.

18. A communication system, comprising: communication device for performing the method of any of claims 1 to 7.