CN112399545A

CN112399545A - Signal sending method and device

Info

Publication number: CN112399545A
Application number: CN201910758366.8A
Authority: CN
Inventors: 谢信乾; 郭志恒; 费永强; 毕文平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2021-02-23
Anticipated expiration: 2039-08-16
Also published as: CN112399545B

Abstract

The application provides a signal sending method and device. The method comprises the following steps: the method comprises the following steps: determining a first transmit power for a first signal in a first time cell on a first carrier and a second transmit power for a second signal in a second time cell on a second carrier; and when the second signal is a signal which can occupy the corresponding guaranteed power of other cell groups in the second cell group, determining the transmission power of the first signal as a third transmission power, transmitting the first signal with the third transmission power in a first time unit on the first carrier, and transmitting the second signal with the second transmission power in a second time unit on the second carrier. According to the scheme, when the second signal is a signal which can occupy the guaranteed power corresponding to other cell groups in the second cell group, the second signal is preferentially guaranteed to be sent, the signal which can occupy the guaranteed power corresponding to other cell groups can be preferentially guaranteed to be sent, and therefore the system performance can be improved.

Description

Signal sending method and device

Technical Field

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

Background

In a Long Term Evolution (LTE) system, a terminal device supports simultaneous access to two network devices, where the access manner is called Dual Connectivity (DC), one of the network devices is a main network device, and the other network device is an auxiliary network device, where one or more cells served by the main network device for the terminal device are called Master Cell Group (MCG), and one or more cells served by the auxiliary network device for the terminal device are called auxiliary Cell Group (SCG). In the development and evolution process of a wireless communication system, an operator may simultaneously deploy a New Radio interface (NR) system and a Long Term Evolution (LTE) system of a fifth generation (5G), and in a Dual connection scenario, a terminal device supports simultaneous Access to a network device of LTE and a network device of NR, because LTE is also called Evolved Universal Terrestrial Radio Access (E-UTRA), this Access manner is called Evolved Universal Terrestrial Radio Access (E-UTRA NR Dual Connectivity, EN-DC). In the EN-DC mode, the network device of the LTE is the primary network device, and the network device of the NR is the secondary network device. In another Dual Connectivity scenario, the terminal device may also support a new air interface and evolved universal terrestrial radio access Dual Connectivity (NR E-UTRA Dual Connectivity, NE-DC), that is, the network device of the NR is a primary network device, and the network device of the LTE is a secondary network device. Since terminals of both EN-DC and NE-DC will have access to network devices of two different radio access technologies, these DC modes may also be referred to collectively as Multi-radio access technology Dual Connectivity (MR-DC). In addition, in yet another dual-connection scenario, for a terminal device supporting only NR, it can also access two different NR network devices at the same time, and this type of connection is called NR-NR DC.

For a wireless communication system, the Duplex mode may be mainly divided into a Frequency Division Duplex (FDD) mode and a Time Division Duplex (TDD) mode according to the difference of the Duplex mode, wherein for a wireless communication system operating in the TDD mode, the system usually includes only one operating Frequency band, so the Frequency band is also referred to as an unpaired Frequency band. For a system using unpaired frequency bands, in a certain period of time, in an area covered by the same network equipment, the whole working frequency band is only used for downlink communication or only used for uplink communication; for a wireless communication system operating in FDD mode, the system typically comprises two paired frequency bands for communication, one for downlink communication from network device to terminal device and the other for uplink communication from terminal device to network device.

At present, a typical deployment mode is that NR is deployed in an unpaired frequency band in a TDD mode, such as a frequency band around 3.5 GHz. In this deployment scenario, the cells in both the MCG and SCG of a terminal device operating in NR-NR DC mode are in TDD mode.

In order to increase the rate at which the terminal device sends uplink signals to the network device, the terminal device, which normally operates in the dual connectivity mode, may send uplink signals to the network device on at least two carriers simultaneously within the same time period, but the total power at which the terminal device sends uplink signals on all carriers is often limited, for example, the maximum total power cannot exceed 23dBm, and therefore, if the total power at which the terminal device sends uplink signals on at least two carriers exceeds the maximum sending power, the terminal device needs to actively reduce the sending power on one or more carriers.

At present, the method for adjusting the transmission power by the terminal device is not suitable for some scenes, thereby causing the performance of the system to be reduced.

Disclosure of Invention

The application provides a signal sending method and a signal sending device, which are used for improving system performance.

In a first aspect, the present application provides a signal transmission method, including: determining a first transmission power for a first signal in a first time unit on a first carrier, and determining a second transmission power for a second signal in a second time unit on a second carrier, wherein the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit are completely or partially overlapped in time, the sum of the first transmission power and the second transmission power is greater than the maximum transmission power of the terminal equipment, and the second transmission power is greater than the difference between the maximum transmission power and a first guaranteed power corresponding to the first cell group; when the second signal is a signal which can occupy the guaranteed power corresponding to other cell groups in the second cell group, determining that the transmission power of the first signal is a third transmission power, wherein the sum of the third transmission power and the second transmission power is not greater than the maximum transmission power; and transmitting the first signal at the third transmit power for the first time unit on the first carrier and transmitting the second signal at the second transmit power for the second time unit on the second carrier.

In one possible implementation, the first signal is a signal of the first cell group that can be occupied by other cell group signals with guaranteed power.

In a second aspect, the present application provides a signal transmission method, including: determining a first transmission power for a first signal in a first time unit on a first carrier, and determining a second transmission power for a second signal in a second time unit on a second carrier, wherein the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit are completely or partially overlapped in time, the sum of the first transmission power and the second transmission power is greater than the maximum transmission power of the terminal equipment, and the second transmission power is greater than the difference between the maximum transmission power and a first guaranteed power corresponding to the first cell group; and when the second signal is a signal which can occupy the corresponding guaranteed power of other cell groups in the second cell group and the first signal is a signal which can be occupied by signals of other cell groups in the first cell group and has the guaranteed power, determining the transmission power of the first signal to be a third transmission power, wherein the sum of the third transmission power and the second transmission power is not more than the maximum transmission power; transmitting the first signal at the third transmit power for the first time unit on the first carrier and the second signal at the second transmit power for the second time unit on the second carrier; or, when the second signal is a signal that cannot occupy the guaranteed power corresponding to another cell group in the second cell group, or the first signal is a signal that cannot occupy the guaranteed power by another cell group signal in the first cell group, determining the transmission power of the first signal as a fourth transmission power and the transmission power of the second signal as a fifth transmission power, where the fourth transmission power is less than or equal to the first transmission power, a sum of the fourth transmission power and the fifth transmission power is not greater than the maximum transmission power, and the fifth transmission power is not greater than a difference between the maximum transmission power and the first guaranteed power; transmitting the first signal at the fourth transmit power for the first time unit on the first carrier and transmitting the second signal at the fifth transmit power for the second time unit on the second carrier.

Based on the above-mentioned scheme of the first aspect or the second aspect, when the second signal is a signal that can occupy the guaranteed power corresponding to another cell group in the second cell group, the transmission of the second signal is preferentially guaranteed, that is, the transmission power of the second signal is not reduced, although the transmission of the second signal needs to occupy the first guaranteed power corresponding to the first cell group, the transmission power of the first signal is selected to be reduced, the scheme can achieve the purpose of preferentially guaranteeing the transmission of the signal that can occupy the guaranteed power corresponding to another cell group, and further can improve the system performance.

Based on the first aspect, or possible implementations of the first aspect, or the second aspect:

in a possible implementation method, the signal capable of occupying the guaranteed power corresponding to the other cell group is a signal corresponding to a high priority service, and/or the signal capable of being occupied by the signal of the other cell group to guarantee the power is a signal corresponding to a low priority service.

In one possible implementation method, the high priority service is a URLLC service, and the low priority service is a non-URLLC service.

In a possible implementation method, before determining that the transmission power of the first signal is the third transmission power, the method further includes: receiving first indication information, the first indication information indicating a priority of the second signal; and determining the second signal as a signal capable of occupying the corresponding guaranteed power of other cell groups according to the priority.

In a possible implementation method, the priority of the second signal is the highest priority of at least two classes, and the at least two classes are classes divided by services supported by the terminal device.

In a possible implementation method, the first indication information is received through a physical downlink control channel.

In a possible implementation method, second indication information is received from a first network device associated with the first cell group, where the second indication information is used to indicate that the first signal is a signal in the first cell group that can be occupied by other cell group signals with guaranteed power; and/or receiving third indication information from a second network device associated with the second cell group, where the third indication information is used to indicate that the second signal is a signal that can occupy a guaranteed power corresponding to another cell group in the second cell group.

In a third aspect, the present application provides a signal transmitting apparatus, which may be a terminal device, and may also be a chip for the terminal device. The apparatus has the functionality to implement the first aspect or embodiments of the first aspect described above. 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 a fourth aspect, the present application provides a signal transmission apparatus, which may be a terminal device, and may also be a chip for the terminal device. The apparatus having functionality to implement the second aspect or embodiments of the second aspect described above. 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 a fifth aspect, the present application provides a signal transmitting apparatus, comprising: a processor and a memory; the memory is used to store computer executable instructions that when executed by the processor cause the apparatus to perform the method as described in the preceding aspects. The apparatus may be a terminal device or a chip for a terminal device.

In a sixth aspect, the present application provides a signal transmitting apparatus, comprising: comprising means or units for performing the steps of the above-mentioned aspects. The apparatus may be a terminal device.

In a seventh aspect, the present application provides a signal transmission apparatus, including a processor and an interface circuit, where the processor is configured to implement the method according to the above aspects through the interface circuit. The processor includes one or more. The apparatus may be a chip for a terminal device.

In an eighth aspect, the present application provides a signal transmission apparatus, including a processor, connected to a memory, for calling a program stored in the memory to execute the method of the above aspects. The memory may be located within the device or external to the device. And the processor includes one or more. The apparatus may be a terminal device or a chip for a terminal device.

In a ninth aspect, the present application also provides a computer-readable storage medium having stored therein instructions, which, when run on a computer, cause the processor to perform the method of the above aspects.

In a tenth aspect, the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

In an eleventh aspect, the present application further provides a chip system, including: a processor configured to perform the method of the above aspects.

Drawings

Fig. 1A is a schematic diagram of a dual connection scenario in which a primary network device and a secondary network device are deployed at the same site;

fig. 1B is a schematic diagram of a dual connection scenario in which a primary network device and a secondary network device are deployed at different sites;

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

FIG. 3A is an exemplary graph of an initially determined transmit power;

FIG. 3B is an exemplary diagram of an adjusted transmit power;

FIG. 3C is a diagram of another example of adjusted transmit power;

fig. 4 is a schematic diagram of a signal transmission device provided in the present application;

fig. 5 is a schematic diagram of another signal transmission apparatus 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 application scenario of the application can be a scenario that the terminal device works in dual connection. In a dual connectivity scenario, the terminal device is simultaneously connected to the primary network device and the secondary network device. It should be noted that the primary network device and the secondary network device may be deployed on the same site, or may be deployed on different sites. Moreover, when the primary network device and the secondary network device may be deployed at the same site, the primary network device and the secondary network device may share the same set of hardware device, or may use different hardware devices. As shown in fig. 1A, a dual connectivity scenario is schematically illustrated in which a primary network device and a secondary network device are deployed at the same site. As shown in fig. 1B, a dual connectivity scenario is illustrated in which the primary network device and the secondary network device are deployed at different sites.

In this application, the terminal device may be a wireless terminal device capable of receiving network device scheduling and indication information, and the wireless terminal device may be a device providing voice and/or data connectivity to a user, or a handheld device having a wireless connection function, or other processing device connected to a wireless modem. The terminal devices, which may be mobile terminal devices such as mobile telephones (or "cellular" telephones), computers, and data cards, for example, mobile devices that may be portable, pocket, hand-held, computer-included, or vehicle-mounted, may communicate with one or more core networks or the internet via a radio access network (e.g., a RAN). Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), tablet computers (pads), and computers with wireless transceiving functions. A wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a Mobile Station (MS), a remote station (remote station), an Access Point (AP), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), a Subscriber Station (SS), a user terminal device (CPE), a terminal (terminal), a User Equipment (UE), a Mobile Terminal (MT), etc. Further, the terminal device may also be a vehicle, an in-vehicle device, a wearable device, or the like that is capable of communicating with the network device.

The network devices (including the primary network device and the secondary network device) are one of the entities in the network side for transmitting or receiving signals, and the network devices may be devices for communicating with the mobile device. The network device may be an Access Point (AP) in a Wireless Local Area Network (WLAN), and may be an evolved Node B (eNB) or eNodeB in LTE), or a relay station or an Access Point, or a new generation base station (nodeb) in an NR system, or a network device in a Public Land Mobile Network (PLMN) network that is evolved in the future, and the like.

In this embodiment of the present application, a network device provides a service for a cell, and a terminal device communicates with the network device through a communication resource (for example, a frequency domain resource or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell (small cell), where the small cell may include: urban cells (Metro cells), Micro cells (Micro cells), Pico cells (Pico cells), Femto cells (Femto cells), and the like, and the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission service. Furthermore, the network device may be other means for providing wireless communication functionality for the terminal device, where possible. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices. For convenience of description, in the embodiments of the present application, an apparatus for providing a wireless communication function for a terminal device is referred to as a network device.

In the dual connectivity mode, there are two Cell groups, namely a Master Cell Group (MCG) and a Secondary Cell Group (SCG). The MCG includes a Primary Cell (PCell), optionally, may additionally include one or more Secondary cells (scells), and the SCG includes a Primary Secondary Cell (PSCell), optionally, may additionally include one or more scells. The network device managing the MCG is called a primary network device and the network device managing the SCG is called a secondary network device.

In this embodiment, the primary network device is one of an LTE network device (e.g., eNB), a 5G network device (e.g., gNB), or a network device in a future communication system, and the secondary network device is also one of the LTE network device, the 5G network device, or a network device in the future communication system. The primary network device and the secondary network device may be network devices of the same standard, such as eNB, or network devices of different standards, such as eNB for the primary network device and gNB for the secondary network device. The communication system of the main network device and the auxiliary network device is not limited in the application.

One possible solution to the problem of the prior art that requires adjustment of the transmission power is as follows, but this solution has some problems, which will be described below.

In the prior art, priorities of different signals and channels are predefined in a protocol, and a terminal device may determine the priority of a signal according to the type of an uplink signal transmitted on carriers in an MCG and an SCG in the same time period, and reduce the power of a signal with a low priority (for example, the power of the signal may be reduced to 0), so as to preferentially guarantee the power of a signal with a high priority. This prior art technique determines to adjust the transmission power in consideration of the signal priority and/or the CG priority.

The CG priority specifically is: the priority of the signal on the MCG is higher than the priority of the signal on the SCG. The signal priorities are in the following order from high to low, i.e. the signal priorities in the front are higher:

1) a Physical Uplink Shared CHannel (PUCCH) carrying an Acknowledgement (ACK), a Negative Acknowledgement (NACK), and a Scheduling Request (SR);

2) a Physical Uplink Shared CHannel (PUSCH) carrying ACK and NACK;

3) the PUCCH carries Channel State Information (CSI);

4) PUSCH carrying CSI;

5) PUSCH not carrying ACK, NACK or CSI;

6) and a Sounding Reference Signal (SRS).

Further, in the prior art, the network device may also configure a minimum guaranteed power for each CG of the terminal device, and one CG may preferentially use the minimum guaranteed power configured for it by the network device, and when the minimum guaranteed power is not fully used by the CG, the remaining power may be used by another CG. For example, for a given two CGs, including CG1 and CG2, if the network device configures CG1 with the parameter r1 being 0.2, the terminal device determines that the guaranteed power of CG1 is 20% of the maximum transmission power, and the terminal device will prioritize this power for CG 1; if the CG2 is configured with the parameter r2 equal to 0.3, the guaranteed power of the CG2 is determined to be 30% of the maximum transmission power, and the terminal device prioritizes the power to the CG 2. So that the terminal device can determine the allocation of power according to the above signal priority and/or CG priority with respect to the power (50% of the maximum transmission power) remaining after the removal of the minimum guaranteed power of the CG1 and CG 2.

In the prior art, a plurality of services are supported, such as Ultra-Reliable and Low-Latency Communication (URLLC) service and non-URLLC service, for example, enhanced Mobile Broadband (eMBB) service. Generally URLLC traffic is of higher importance than non-URLLC traffic, whereas the prior art does not consider the priority of different traffic. According to the prior art scheme, when the non-URLLC service of the MCG is concurrent with the URLLC service of the SCG, the non-URLLC service preferentially uses the transmission power of the terminal device, which may not meet the requirement of the URLLC service.

Therefore, the embodiment of the application provides a signal transmission method, which can ensure the preferential transmission of signals capable of occupying the guaranteed power of other cell groups.

For convenience of description, some terms are denoted by symbols in the present application, as follows:

maximum transmission power of terminal device: pmax;

first transmission power of the first signal: PA 1;

second transmission power of the second signal: PA 2;

third transmission power of the first signal: PA 3;

fourth transmission power of the first signal: PA 4;

actual transmission power of the first signal: p1;

fifth transmission power of the second signal: PA 5;

actual transmission power of the second signal: p2;

first guaranteed power corresponding to the first cell group: PB 1;

second guaranteed power corresponding to the second cell group: PB 2;

transmission power shared by the first cell group and the second cell group: PB 3.

Furthermore, it is necessary to satisfy:

1)、P1+P2<＝Pmax；

2)、PB1+PB2+PB3＝Pmax。

the first signal is a signal in a first time unit on a first carrier, or is understood to be a first signal transmitted in a first time unit on a first carrier. The second signal is a signal within a second time unit on a second carrier, or is understood to be a second signal transmitted within a second time unit on a second carrier.

The first time unit and the second time unit are completely or partially overlapped in time. Optionally, the first time unit is one or more symbols, slots, minislots, or subframes, and the second time unit is one or more symbols, slots, minislots, or subframes.

In this application, the master network device may be referred to as a first network device, and the MCG under the master network device may be referred to as a first cell group. Accordingly, the secondary network device is referred to as a second network device, and the SCG under the secondary network device is referred to as a second cell group. Alternatively, the secondary network device may also be referred to as a first network device, and the SCG under the secondary network device may be referred to as a first cell group. Accordingly, the master network device is referred to as the second network device and the MCG under the master network device is referred to as the second cell group.

The first cell group includes one or more carriers, and the first carrier belongs to the first cell group. The second cell group includes one or more carriers, which belong to the second cell group.

Optionally, the maximum transmit power (Pmax) of the terminal device is configured by the network device or determined by the terminal device.

Optionally, the first guaranteed power (PB1) corresponding to the first cell group is configured to the terminal device by the network device associated with the first cell group, and the second guaranteed power (PB2) corresponding to the second cell group is configured to the terminal device by the network device associated with the second cell group.

Optionally, the first signal is a Physical Random Access Channel (PRACH), a PUCCH, a PUSCH, or an SRS, and the second signal is the PRACH, PUCCH, PUSCH, or SRS.

As shown in fig. 2, a schematic flow chart of a signal transmission method provided in the present application is shown, where the method may be executed by a terminal device or a chip for the terminal device.

The method comprises the following steps:

step 201, a first transmit power is determined for the first signal (PA1), and a second transmit power is determined for the second signal (PA 2).

For example, the first and second transmit powers may be determined as follows:

taking the first signal and the second signal as the physical uplink shared channel as an example, referring to the content in section 7.1.1 of technical specification 38.213v15.5.0 of the third generation partnership project (3 GPP), the terminal device may determine the power P for transmitting the physical uplink shared channel according to the following formula_PUSCH,b,f,c(i,j,q_d,l)：

The explanations of the individual parameters can be referred to in the technical specification.

The terminal device can thus determine a first transmission power for the first signal and/or a second transmission power for the second signal according to this method. When the first signal/the second signal is another channel, such as a physical uplink control channel or a sounding reference signal, the terminal device may determine the first transmission power for the first signal and/or determine the second transmission power for the second signal with reference to contents of other sections in the technical specification.

The above PA1 and PA2 satisfy:

1)、PA1+PA2>Pmax；

2)、PA2>Pmax-PB1。

since PA1+ PA2> Pmax, it is not possible to transmit the first signal with PA1 and the second signal with PA2 at the same time, i.e., it is necessary to reduce the transmission power of the first signal, or to reduce the transmission power of the second signal, or to reduce the transmission power of the first signal and the transmission power of the second signal at the same time.

Since PA2> Pmax-PB1, that is, PA2> PB2+ PB3, the second guaranteed power corresponding to the second cell group and the transmission power shared by the first cell group and the second cell group cannot satisfy the transmission power of the second signal, and therefore, if the transmission power of the second signal is not reduced, the transmission of the second signal needs to occupy the first guaranteed power corresponding to the first cell group.

According to the above prior art solution, the second signal is not allowed to occupy the first guaranteed power corresponding to the first cell group, i.e. the transmission power of the second signal must be reduced (from PA2 to a lower value, so that the reduced transmission power is less than or equal to Pmax-PB 1).

And in case one, the second signal is a signal which can occupy the corresponding guaranteed power of other cell groups in the second cell group.

Based on this case one, the following steps 202-203 are performed.

And step 202, when the second signal is a signal which can occupy the corresponding guaranteed power of other cell groups in the second cell group, determining the transmission power of the first signal to be a third transmission power, wherein the sum of the third transmission power (PA3) and the second transmission power (PA2) is not more than the maximum transmission power (Pmax).

I.e., the transmission power of the first signal is reduced, from the first transmission power (PA1) to the third transmission power (PA 3). While the transmission power of the second signal is unchanged and remains at the second transmission power (PA 2). That is, the actual transmission power (P1) of the first signal is equal to PA3, and the actual transmission power (P2) of the second signal is equal to PA 2.

For example, referring to fig. 3A, a diagram is an example of initially determined transmit power. Wherein PA2+ PA1> Pmax, and PA2> PB2+ PB 3. Fig. 3B is an exemplary diagram of the adjusted transmission power, PA2+ PA3< ═ Pmax.

Step 203, the first signal is transmitted with the third transmission power in the first time unit on the first carrier, and the second signal is transmitted with the second transmission power in the second time unit on the second carrier.

It should be noted that, as another implementation manner of the first case, the first case may also be replaced with: the second signal can occupy the corresponding guaranteed power of other cell groups, and the first signal can be occupied by the signals of other cell groups to guarantee the power. Or, it is understood that, when the second signal can occupy the guaranteed power corresponding to the other cell group, and the first signal can be occupied by the guaranteed power of the other cell group signal, the above steps 202 to 203 are performed.

For the first situation, the second signal is a signal that can occupy the guaranteed power corresponding to other cell groups in the second cell group, so that the transmission power of the second signal is preferentially satisfied, and the second signal is allowed to occupy the guaranteed power of the first signal.

And in case two, the second signal is a signal which cannot occupy the corresponding guaranteed power of the other cell groups in the second cell group, or the first signal is a signal which cannot be occupied by the signal of the other cell group in the first cell group.

Based on this case two, the following steps 204-205 are performed.

And 204, when the second signal is a signal which cannot occupy the corresponding guaranteed power of the other cell group in the second cell group or the first signal is a signal which cannot occupy the guaranteed power of the other cell group in the first cell group, determining that the transmission power of the first signal is fourth transmission power (PA4) and the transmission power of the second signal is fifth transmission power (PA5), wherein the sum of the fourth transmission power and the fifth transmission power is not more than maximum transmission power (Pmax), and the fifth transmission power is not more than the difference between the maximum transmission power and the first guaranteed power (PB 1).

I.e. the transmission power of the first signal is reduced, from the first transmission power (PA1) to the fourth transmission power (PA4), and the transmission power of the second signal is reduced, from the second transmission power (PA2) to the fifth transmission power (PA5), and after the transmission power of the second signal is reduced to PA5, the guaranteed power of the first signal is no longer occupied. Note that the transmission power of the first signal may not be reduced, that is, the transmission power of the first signal may be maintained at PA1, that is, PA4 — PA 1.

That is, the actual transmission power (P1) of the first signal is equal to PA4, and the actual transmission power (P2) of the second signal is equal to PA 5.

For example, referring to fig. 3A, an exemplary graph of initially determined transmit power is shown where PA2+ PA1> Pmax, and PA2> PB2+ PB 3. Fig. 3C is an exemplary diagram of the adjusted transmission power, PA4+ PA5< ═ Pmax, and PA5< ═ PB2+ PB3, and PA4< ═ PA 1.

Step 205, the first signal is transmitted with the fourth transmission power in the first time unit on the first carrier, and the second signal is transmitted with the fifth transmission power in the second time unit on the second carrier.

For the second situation, since the second signal is a signal that cannot occupy the guaranteed power corresponding to the other cell group in the second cell group, or the first signal is a signal that cannot be occupied by the signal of the guaranteed power of the other cell group in the first cell group, the transmission power of the second signal is no longer preferentially satisfied, that is, the second signal is not allowed to occupy the guaranteed power of the first signal.

Based on the above scheme, when the second signal is a signal that can occupy the guaranteed power corresponding to other cell groups in the second cell group, the transmission of the second signal is preferentially guaranteed, that is, the transmission power of the second signal is not reduced, although the transmission of the second signal needs to occupy the first guaranteed power corresponding to the first cell group, the transmission power of the first signal is selectively reduced, the scheme can achieve the purpose of preferentially guaranteeing the transmission of the signal that can occupy the guaranteed power corresponding to other cell groups, and further can improve the system performance.

For the above-mentioned first or second case, two different implementation methods of signals capable of occupying the guaranteed power corresponding to other cell groups and signals capable of being occupied by the guaranteed power by other cell group signals are described below.

The first implementation method is that the signal capable of occupying the guaranteed power corresponding to other cell groups is the signal corresponding to the high-priority service, and the signal capable of being occupied by the signal of other cell groups is the signal corresponding to the low-priority service. Here, a signal corresponding to a high priority service may also be referred to as a high priority signal, and a signal corresponding to a low priority service may also be referred to as a low priority signal.

As an implementation manner, the high priority service may be, for example, URLLC service, the low priority service is non-URLLC service, and the non-URLLC service includes, but is not limited to, enhanced Mobile Broadband (eMBB) service, Machine Type Communication (MTC) service.

As another implementation, the high-priority traffic may also be Vehicle-to-event (V2X) traffic, and the low-priority traffic is non-V2X traffic, where the non-V2X traffic includes, but is not limited to, eMBB traffic and MTC traffic.

Aiming at the signals corresponding to the services of the terminal equipment, at least the following two dividing methods are adopted:

in the method 1, the service of the terminal equipment is divided into two grades, wherein the signal corresponding to the service with high grade is a high-priority signal, and the signal corresponding to the service with low grade is a low-priority signal.

Method 2, the service of the terminal device is divided into L levels, where L is an integer greater than 2, and the signal corresponding to the service greater than or equal to the first level in the L levels is a high priority signal, the signal corresponding to the service smaller than the first level is a low priority signal, and the first level is one of the L levels except for the maximum level and the minimum level. Wherein the first level may be protocol predefined or network device configured.

Taking L as an example, the service levels of the terminal device are sequentially divided from low to high into: level 1, level 2, level 3, level 4, level 5, level 6, level 7, level 8, level 9, level 10, and the first level is 6, thus:

the low priority signal includes: a signal corresponding to a level 1 service, a signal corresponding to a level 2 service, a signal corresponding to a level 3 service, a signal corresponding to a level 4 service, and a signal corresponding to a level 5 service;

the high priority signal includes: a signal corresponding to a class 6 service, a signal corresponding to a class 7 service, a signal corresponding to a class 8 service, a signal corresponding to a class 9 service, and a signal corresponding to a class 10 service.

The level 1, the level 2, the level 3, the level 4, and the level 5 may be further divided for non-URLLC services, for example, if the non-URLLC service is an eMBB service, the eMBB service may be further divided into 5 levels, and the level 1, the level 2, the level 3, the level 4, and the level 5 correspond to the eMBB service 1, the eMBB service 2, the eMBB service 3, the eMBB service 4, and the eMBB service 5, respectively.

The level 6, the level 7, the level 8, the level 9, and the level 10 may be further divided for URLLC services, for example, the URLLC services may be further divided into 5 levels, and the level 6, the level 7, the level 8, the level 9, and the level 10 correspond to URLLC service 1, URLLC service 2, URLLC service 3, URLLC service 4, and URLLC service 5, respectively.

And when the difference value between the grade of the service corresponding to the second signal and the grade of the service corresponding to the first signal is greater than or equal to the first threshold, the second signal is a signal capable of occupying the guaranteed power corresponding to other cell groups, and the first signal is a signal capable of being occupied by the signals of other cell groups to guarantee the power. Or, it is understood that the second signal is a signal capable of occupying a guaranteed power corresponding to the first signal, and the first signal is a signal capable of being occupied by the second signal at the guaranteed power.

The first threshold here may be protocol predefined or network device configured.

Take the example in method 2 above to implement method one as an example. For example, the first threshold is 3, the level of the service corresponding to the second signal is level 6, the level of the service corresponding to the first signal is level 2, and 6-2>3, it is determined that the second signal is a signal capable of occupying the guaranteed power corresponding to the other cell group, and the first signal is a signal capable of being occupied by the signal of the other cell group at the guaranteed power.

For another example, the first threshold is 3, the level of the service corresponding to the second signal is level 6, the level of the service corresponding to the first signal is level 4, and 6-4<3, it is determined that the second signal is a signal that cannot occupy the guaranteed power corresponding to another cell group, and the first signal is a signal that cannot be occupied by signals of another cell group at the guaranteed power.

Based on the scheme, when the difference value between the grade of the service corresponding to the second signal and the grade of the service corresponding to the first signal is greater than or equal to the first threshold, the terminal equipment preferentially ensures the transmission of the second signal, that is, the transmission power of the second signal is not reduced, although the transmission of the second signal needs to occupy the first guaranteed power corresponding to the first cell group, the transmission power of the first signal is selectively reduced, the scheme can preferentially ensure the transmission of the signals capable of occupying the guaranteed powers corresponding to other cell groups, and further the system performance can be improved.

For the first implementation method, in an implementation method, before the step 202 or the step 204, an indication information may be further received, where the indication information indicates a priority of the second signal; the type of the second signal may be determined according to the priority of the second signal indicated by the indication information, for example, when the indication information is the first indication information, it is determined that the second signal is a signal capable of occupying the guaranteed power corresponding to the other cell group, and when the indication information is the fourth indication information, it is determined that the second signal is a signal incapable of occupying the guaranteed power corresponding to the other cell group. The indication information may be received through a physical downlink control channel. As a specific example, the indication information may be carried in a first field in a physical downlink control channel, and a value of the first field includes first indication information (also referred to as a first state) and fourth indication information (also referred to as a second state). When the value of the first field is the first indication information, the first field indicates that the priority of the second signal is the high priority, so that the second signal can be determined to be a signal capable of occupying the guaranteed power corresponding to the other cell group, or the second signal is determined to be the high priority signal. When the value of the first field is the fourth indication information, the first field indicates that the priority of the second signal is the low priority, so that the second signal can be determined to be a signal which cannot occupy the guaranteed power corresponding to the other cell group, or the second signal is determined to be the low priority signal. Illustratively, the first field includes 1 bit, and the bit takes a first state when taking a value of 1 and takes a second state when taking a value of 0. For the first implementation method or the second implementation method, in an implementation method, before step 202 or step 204, an indication information may be further received from the first network device associated with the first cell group, where the indication information is used to indicate that the first signal is a signal in the first cell group that can occupy the guaranteed power by signals of other cell groups or indicate that the first signal is a signal in the first cell group that cannot occupy the guaranteed power by signals of other cell groups. As a specific example, the indication information may be carried in a second field in the physical downlink control channel, and a value of the second field includes second indication information (also referred to as a first state) and fifth indication information (also referred to as a second state). And when the value of the second field is the second indication information, the second field indicates that the first signal is a signal which can be occupied by other cell group signals in the first cell group and has a guaranteed power. And when the value of the second field is the fifth indication information, the second field indicates that the first signal is a signal which cannot be occupied by signals of other cell groups in the first cell group to ensure power. Illustratively, the second field includes 1 bit, and the bit is in a first state when taking a value of 1 and in a second state when taking a value of 0.

For the first implementation method or the second implementation method, in an implementation method, before step 202 or step 204, an indication information may be further received from a second network device associated with the second cell group, where the indication information is used to indicate that the second signal is a signal that can occupy the guaranteed power corresponding to the other cell group in the second cell group or indicate that the second signal is a signal that cannot occupy the guaranteed power corresponding to the other cell group in the second cell group. As a specific example, the indication information may be carried in a third field in the physical downlink control channel, and a value of the third field includes third indication information (also referred to as a first state) and sixth indication information (also referred to as a second state). And when the value of the third field is the third indication information, the third field indicates that the second signal is a signal which can occupy the corresponding guaranteed power of other cell groups in the second cell group. And when the value of the third field is the sixth indication information, the third field indicates that the second signal is a signal which cannot occupy the corresponding guaranteed power of other cell groups in the second cell group. Illustratively, the third field includes 1 bit, and the bit takes a first state when taking a value of 1 and takes a second state when taking a value of 0.

As shown in fig. 4, which is a possible exemplary block diagram of a signal transmission apparatus according to the present application, the apparatus 400 may be in the form of software or hardware. The apparatus 400 may include: a processing unit 402 and a communication unit 401. As an implementation, the communication unit 401 may include a receiving unit and a transmitting unit. The processing unit 402 is used for controlling and managing the operation of the apparatus 400. The communication unit 401 is used to support communication of the apparatus 400 with other network entities.

The processing unit 402 may be a processor or a controller, such as a general 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 401 is an interface circuit of the apparatus for receiving signals from other apparatuses. For example, when the device is implemented in the form of a chip, the communication unit 401 is an interface circuit of the chip for receiving a signal from another chip or device, or an interface circuit of the chip for transmitting a signal to another chip or device.

The apparatus 400 may be a terminal device in any of the above embodiments, and may also be a chip for a terminal device. For example, when the apparatus 400 is a terminal device, the processing unit 402 may be a processor, and the communication unit 401 may be a transceiver, for example. Optionally, the transceiver may include radio frequency circuitry. For example, when the apparatus 400 is a chip for a terminal device, the processing unit 402 may be a processor, for example, and the communication unit 401 may be an input/output interface, a pin, a circuit, or the like, for example. The processing unit 402 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 terminal 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.

In a first embodiment, the apparatus 400 is a terminal device, and the processing unit 402 is configured to determine a first transmission power for a first signal in a first time unit on a first carrier, and determine a second transmission power for a second signal in a second time unit on a second carrier, where the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit are completely or partially overlapped in time, a sum of the first transmission power and the second transmission power is greater than a maximum transmission power of the terminal device, and the second transmission power is greater than a difference between the maximum transmission power and a first guaranteed power corresponding to the first cell group; when the second signal is a signal which can occupy the guaranteed power corresponding to other cell groups in the second cell group, determining that the transmission power of the first signal is a third transmission power, wherein the sum of the third transmission power and the second transmission power is not greater than the maximum transmission power; the communication unit 401 is configured to transmit the first signal with the third transmission power in the first time unit on the first carrier, and transmit the second signal with the second transmission power in the second time unit on the second carrier.

In a second embodiment, the apparatus 400 is a terminal device, and the processing unit 402 is configured to determine a first transmission power for a first signal in a first time unit on a first carrier, and determine a second transmission power for a second signal in a second time unit on a second carrier, where the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit are completely or partially overlapped in time, a sum of the first transmission power and the second transmission power is greater than a maximum transmission power of the terminal device, and the second transmission power is greater than a difference between the maximum transmission power and a first guaranteed power corresponding to the first cell group;

the processing unit 402 is further configured to determine, when the second signal is a signal that can occupy a guaranteed power corresponding to another cell group in the second cell group and the first signal is a signal that can be occupied by a guaranteed power by another cell group signal in the first cell group, that the transmission power of the first signal is a third transmission power, where a sum of the third transmission power and the second transmission power is not greater than the maximum transmission power; the communication unit 401 is configured to transmit the first signal with the third transmission power in the first time unit on the first carrier, and transmit the second signal with the second transmission power in the second time unit on the second carrier; or

The processing unit 402 is further configured to determine, when the second signal is a signal that cannot occupy a guaranteed power corresponding to another cell group in the second cell group or the first signal is a signal that cannot occupy a guaranteed power corresponding to another cell group signal in the first cell group, a transmission power of the first signal is a fourth transmission power and a transmission power of the second signal is a fifth transmission power, where the fourth transmission power is smaller than or equal to the first transmission power, a sum of the fourth transmission power and the fifth transmission power is not greater than the maximum transmission power, and the fifth transmission power is not greater than a difference between the maximum transmission power and the first guaranteed power; the communication unit 401 is configured to transmit the first signal with the fourth transmission power in the first time unit on the first carrier, and transmit the second signal with the fifth transmission power in the second time unit on the second carrier.

Based on the first embodiment or the second embodiment:

In a possible implementation method, the communication unit 401 is further configured to receive first indication information before the processing unit 402 determines that the transmission power of the first signal is the third transmission power, where the first indication information indicates a priority of the second signal; the processing unit 402 is further configured to determine, according to the priority, that the second signal is a signal capable of occupying a guaranteed power corresponding to another cell group.

In a possible implementation method, the communication unit 401 is further configured to receive second indication information from a first network device associated with the first cell group, where the second indication information is used to indicate that the first signal is a signal in the first cell group that can be occupied by other cell group signals with guaranteed power; and/or receiving third indication information from a second network device associated with the second cell group, where the third indication information is used to indicate that the second signal is a signal that can occupy a guaranteed power corresponding to another cell group in the second cell group.

It can be understood that, when the apparatus is used for the foregoing signal transmission method, specific implementation procedures and corresponding beneficial effects may refer to relevant descriptions in the foregoing method embodiments, and are not described herein again.

If the device is a terminal device, the terminal device is presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that provides the described functionality. In a simple embodiment, the terminal device may take the form shown in fig. 5, as will be appreciated by those skilled in the art.

For example, the processor 502 in fig. 5 may cause the terminal device to execute the method in the above-described method embodiment by calling a computer stored in the memory 501 to execute the instructions.

In particular, the functions/implementation procedures of the communication unit 401 and the processing unit 402 in fig. 4 may be implemented by the processor 502 in fig. 5 calling a computer executing instruction stored in the memory 501. Alternatively, the function/implementation procedure of the processing unit 402 in fig. 4 may be implemented by the processor 502 in fig. 5 calling a computer executing instruction stored in the memory 501, and the function/implementation procedure of the communication unit 401 in fig. 4 may be implemented by the communication interface 503 in fig. 5.

Alternatively, when the apparatus 400 is a chip or a circuit, the function/implementation process of the communication unit 401 may also be implemented by a pin or a circuit.

Fig. 5 is a schematic diagram of another signal transmission apparatus provided in the present application, which may be a terminal device in the foregoing embodiment. The apparatus 500 comprises: a processor 502, a communication interface 503, and a memory 501. Optionally, the apparatus 500 may also include a communication line 504. Wherein, the communication interface 503, the processor 502 and the memory 501 may be connected to each other through a communication line 504; the communication line 504 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication lines 504 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. 5, but this is not intended to represent only one bus or type of bus.

Processor 502 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 503 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 (WLAN), a wired access network, etc.

The memory 501 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 compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, 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 504. The memory may also be integral to the processor.

The memory 501 is used for storing computer-executable instructions for executing the present application, and is controlled by the processor 502 to execute. The processor 502 is configured to execute computer-executable instructions stored in the memory 501, so as to implement the signal transmission 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. "plurality" means two or more, and other terms are analogous. Furthermore, for elements (elements) that appear in the singular form "a," an, "and" the, "they are not intended to mean" one or only one "unless the context clearly dictates otherwise, but rather" one or more than one. For example, "a device" means for one or more such devices.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device including one or more available media integrated servers, data centers, and the like. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

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.

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 signal transmission method, comprising:

determining a first transmission power for a first signal in a first time unit on a first carrier, and determining a second transmission power for a second signal in a second time unit on a second carrier, wherein the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit are completely or partially overlapped in time, the sum of the first transmission power and the second transmission power is greater than the maximum transmission power of the terminal equipment, and the second transmission power is greater than the difference between the maximum transmission power and a first guaranteed power corresponding to the first cell group;

when the second signal is a signal which can occupy the guaranteed power corresponding to other cell groups in the second cell group, determining that the transmission power of the first signal is a third transmission power, wherein the sum of the third transmission power and the second transmission power is not greater than the maximum transmission power; and

transmitting the first signal at the third transmit power for the first time unit on the first carrier and transmitting the second signal at the second transmit power for the second time unit on the second carrier.

2. The method of claim 1, wherein the first signal is a signal in the first cell group that can be occupied by other cell group signals for a guaranteed power.

3. A signal transmission method, comprising:

determining a first transmission power for a first signal in a first time unit on a first carrier, and determining a second transmission power for a second signal in a second time unit on a second carrier, wherein the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit are completely or partially overlapped in time, the sum of the first transmission power and the second transmission power is greater than the maximum transmission power of the terminal equipment, and the second transmission power is greater than the difference between the maximum transmission power and a first guaranteed power corresponding to the first cell group; and

when the second signal is a signal which can occupy the corresponding guaranteed power of other cell groups in the second cell group, and the first signal is a signal which can be occupied by signals of other cell groups in the first cell group and has guaranteed power, determining the transmission power of the first signal to be a third transmission power, wherein the sum of the third transmission power and the second transmission power is not more than the maximum transmission power; transmitting the first signal at the third transmit power for the first time unit on the first carrier and the second signal at the second transmit power for the second time unit on the second carrier; or

When the second signal is a signal which cannot occupy the corresponding guaranteed power of other cell groups in the second cell group or the first signal is a signal which cannot occupy the guaranteed power of other cell group signals in the first cell group, determining the transmission power of the first signal as fourth transmission power and the transmission power of the second signal as fifth transmission power, wherein the fourth transmission power is smaller than or equal to the first transmission power, the sum of the fourth transmission power and the fifth transmission power is not larger than the maximum transmission power, and the fifth transmission power is not larger than the difference between the maximum transmission power and the first guaranteed power; transmitting the first signal at the fourth transmit power for the first time unit on the first carrier and transmitting the second signal at the fifth transmit power for the second time unit on the second carrier.

4. A method according to any of claims 1-3, characterized in that the signal capable of occupying the guaranteed power corresponding to the other cell group is a signal corresponding to a high priority service and/or the signal capable of being occupied by the other cell group signal with the guaranteed power is a signal corresponding to a low priority service.

5. The method of claim 4, wherein the high priority traffic is very high reliability very low latency communications URLLC traffic and the low priority traffic is non-URLLC traffic.

6. The method of any of claims 1-5, wherein prior to determining the transmit power of the first signal to be the third transmit power, the method further comprises:

receiving first indication information, the first indication information indicating a priority of the second signal; and

and determining the second signal as a signal capable of occupying the corresponding guaranteed power of other cell groups according to the priority.

7. The method of claim 6,

the priority of the second signal is the highest priority of at least two levels, and the at least two levels are levels divided by services supported by the terminal equipment.

8. The method of claim 6 or 7,

the first indication information is received through a physical downlink control channel.

9. The method of any of claims 1-5, wherein the method further comprises:

receiving second indication information from a first network device associated with the first cell group, wherein the second indication information is used for indicating that the first signal is a signal which can be occupied by other cell group signals in the first cell group and has guaranteed power; and/or the presence of a gas in the gas,

and receiving third indication information from a second network device associated with the second cell group, where the third indication information is used to indicate that the second signal is a signal that can occupy guaranteed power corresponding to another cell group in the second cell group.

10. A signal transmission apparatus, comprising a processing unit and a communication unit;

the processing unit is configured to determine a first transmission power for a first signal in a first time unit on a first carrier, and determine a second transmission power for a second signal in a second time unit on a second carrier, where the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit are completely or partially overlapped in time, a sum of the first transmission power and the second transmission power is greater than a maximum transmission power of the terminal device, and the second transmission power is greater than a difference between the maximum transmission power and a first guaranteed power corresponding to the first cell group; when the second signal is a signal which can occupy the guaranteed power corresponding to other cell groups in the second cell group, determining that the transmission power of the first signal is a third transmission power, wherein the sum of the third transmission power and the second transmission power is not greater than the maximum transmission power; and

the communication unit is configured to transmit the first signal with the third transmission power in the first time unit on the first carrier, and transmit the second signal with the second transmission power in the second time unit on the second carrier.

11. The apparatus of claim 10, wherein the first signal is a signal in the first cell group that can be occupied by other cell group signals for a guaranteed power.

12. A signal transmission apparatus, comprising a processing unit and a communication unit;

the processing unit is configured to determine a first transmission power for a first signal in a first time unit on a first carrier, and determine a second transmission power for a second signal in a second time unit on a second carrier, where the first carrier belongs to a first cell group, the second carrier belongs to a second cell group, the first time unit and the second time unit are completely or partially overlapped in time, a sum of the first transmission power and the second transmission power is greater than a maximum transmission power of the terminal device, and the second transmission power is greater than a difference between the maximum transmission power and a first guaranteed power corresponding to the first cell group; and

the processing unit is further configured to determine, when the second signal is a signal capable of occupying a guaranteed power corresponding to another cell group in the second cell group, and the first signal is a signal capable of being occupied by a guaranteed power by another cell group signal in the first cell group, that the transmission power of the first signal is a third transmission power, where a sum of the third transmission power and the second transmission power is not greater than the maximum transmission power; the communication unit is configured to transmit the first signal with the third transmission power in the first time unit on the first carrier, and transmit the second signal with the second transmission power in the second time unit on the second carrier; or

The processing unit is further configured to determine, when the second signal is a signal that cannot occupy a guaranteed power corresponding to another cell group in the second cell group or the first signal is a signal that cannot occupy a guaranteed power corresponding to another cell group signal in the first cell group, a transmission power of the first signal is a fourth transmission power and a transmission power of the second signal is a fifth transmission power, where the fourth transmission power is smaller than or equal to the first transmission power, a sum of the fourth transmission power and the fifth transmission power is not greater than the maximum transmission power, and the fifth transmission power is not greater than a difference between the maximum transmission power and the first guaranteed power; the communication unit is configured to transmit the first signal with the fourth transmission power in the first time unit on the first carrier, and transmit the second signal with the fifth transmission power in the second time unit on the second carrier.

13. An arrangement according to any of claims 10-12, c h a r a c t e r i z e d i n that the signal capable of occupying the guaranteed power corresponding to the other cell group is a signal corresponding to a high priority traffic and/or in that the signal capable of being occupied by the other cell group signal at the guaranteed power is a signal corresponding to a low priority traffic.

14. The apparatus of claim 13, in which the high priority traffic is very high reliability very low latency communications URLLC traffic and the low priority traffic is non-URLLC traffic.

15. The apparatus according to any of claims 10-14, wherein the communication unit is further configured to receive first indication information before the processing unit determines that the transmission power of the first signal is the third transmission power, the first indication information indicating a priority of the second signal;

and the processing unit is further configured to determine, according to the priority, that the second signal is a signal capable of occupying a guaranteed power corresponding to another cell group.

16. The apparatus of claim 15,

17. The apparatus of claim 15 or 16,

18. The apparatus of any of claims 10-14, wherein the communication unit is further configured to:

19. A signal transmission device, comprising: a processor and interface circuitry, the processor to communicate with a network device through the interface circuitry and to perform the method of any of claims 1-9.

20. A signal transmission device comprising a processor coupled to a memory, the processor calling a program stored in the memory to perform the method of any one of claims 1 to 9.

21. A signal transmission apparatus, comprising a processor and a memory, wherein the memory is configured to store computer-executable instructions that, when executed by the processor, cause the apparatus to perform the method of any one of claims 1-9.

22. A terminal device, characterized in that it comprises an arrangement according to any of claims 10-18.

23. A storage medium having stored thereon a computer program or instructions, which, when executed, cause a processor to perform the method of any one of claims 1-9.