CN108811128B

CN108811128B - Power control method and terminal equipment

Info

Publication number: CN108811128B
Application number: CN201710314125.5A
Authority: CN
Inventors: 酉春华; 刘星; 郭英昊; 王亚飞; 黄曲芳
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-05-05
Filing date: 2017-05-05
Publication date: 2021-02-05
Anticipated expiration: 2037-05-05
Also published as: WO2018201777A1; CN108811128A

Abstract

The invention discloses a power control method and terminal equipment, which solve the problem that some service requirements cannot be met due to the fact that a specific power regulation mechanism does not exist for the same channel in the prior art. The method comprises the steps that terminal equipment determines at least two resources, wherein the at least two resources have a first overlapping area in a time domain, and each resource corresponds to a first power in the first overlapping area; if at least two parts of resources correspond to the same physical channel and the sum of first powers corresponding to the at least two parts of resources in a first overlapping area is greater than the maximum power, determining a power factor of each part of resources according to the priority of each part of the at least two parts of resources; the sum of the powers of the resources in the overlapping area after the first power of each resource is adjusted based on the power factor is less than or equal to the maximum power, and the power factor of the resource with high priority is large and the power factor of the resource with low priority is small.

Description

Power control method and terminal equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a power control method and a terminal device.

Background

The power control is to change the transmission power of a User Equipment (UE) or an eNodeB in a wireless manner within a certain range, so as to compensate for the path loss and the shadow fading of a channel and suppress inter-cell interference.

The specific implementation manner of power allocation of the Long Term Evolution system (LTE) may be:

after receiving the uplink resource allocated by the base station, the terminal device calculates the power for transmitting data by using the uplink resource.

If the sum of the powers on the resources of the active serving cell over a certain time region is greater than the maximum output power of the UE, then a power adjustment is needed at this time. That is, the power corresponding to the resource of some channels is adjusted by the power factor of the channel, so as to ensure that the power in a certain time region is not greater than the maximum output power of the UE. The specific power adjustment rule is as follows: different power factors are set for different channels to adjust the power of the resources, but for the resources in the channels, a specific power adjustment mechanism does not exist, so that service power distribution with different requirements of the same channel is unreasonable, some service requirements cannot be met, and the delay of data transmission by using the resources is increased, and the reliability is reduced.

In addition, with the continuous development of the long term evolution system and even the continuous research of the fifth generation mobile communication, at least two resources for data transmission of the terminal device may exist, and the terminal device calculates the power corresponding to each resource at the overlapping time as the transmission power.

Disclosure of Invention

The invention provides a power control method and terminal equipment, and the method and the device provided by the invention solve the problem that in the prior art, no specific power regulation mechanism exists for the same channel, so that service power distribution of different requirements of the same channel is unreasonable, and some service requirements cannot be met.

In a first aspect, a power control method is provided, which includes:

the method comprises the steps that terminal equipment determines at least two resources, wherein the at least two resources have a first overlapping area in a time domain, and each of the at least two resources corresponds to a first power in the first overlapping area;

if the at least two resources correspond to the same physical channel and the sum of first powers corresponding to the at least two resources in the first overlapping area is greater than the maximum power, the terminal device determines a power factor of each of the at least two resources according to the priority of each of the at least two resources; the sum of the adjusted power of the first power of each of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the power factor of the resource with the higher priority is greater and the power factor of the resource with the lower priority is smaller.

In the method provided in this embodiment of the present application, if a situation that a sum of first powers corresponding to at least two resources in the first overlapping area is greater than a maximum power occurs, power factors corresponding to different resources may be determined according to priorities corresponding to the at least two resources, and powers corresponding to the at least two resources may be adjusted based on the determined power factors. Therefore, targeted power regulation can be achieved, and time delay and reliability of different resources during data transmission are guaranteed.

In a possible implementation, the method further includes:

the terminal equipment respectively adjusts the power of each resource by using the power factor of each resource of the at least two resources;

and the terminal equipment sends data to the wireless access equipment according to the power adjusted by each resource.

In one possible implementation, the method includes:

the shorter the transmission time interval TTI length of the at least two resources is, the higher the priority is; and/or

The narrower the subcarrier spacing of the at least two resources, the higher the priority.

In a possible implementation manner, the at least two resources correspond to different cells, and according to a preset cell priority, the higher the priority of the cell corresponding to the resource in the at least two resources is, the higher the priority of the corresponding resource is.

In a possible implementation manner, the different cells belong to different cell groups, and according to a preset priority of the cell group, the higher the priority of the cell group corresponding to the resource in the at least two resources is, the higher the priority of the corresponding resource is.

In one possible implementation manner, the cells include a low-frequency authorized cell, a low-frequency unlicensed cell, a high-frequency authorized cell, and a high-frequency unlicensed cell, and the priorities of the cells include:

the priority of the low-frequency authorized cell is greater than that of the high-frequency authorized cell;

the priority of the low-frequency authorized cell is greater than that of the high-frequency unauthorized cell;

the priority of the low-frequency authorized cell is greater than that of the low-frequency unauthorized cell;

the priority of the low-frequency unauthorized cell is greater than that of the high-frequency unauthorized cell;

the priority of the high-frequency authorized cell is greater than that of the high-frequency unauthorized cell.

In a possible implementation, the method further includes:

and the terminal equipment informs the priority of the at least two resources to a physical layer of the terminal equipment through a Media Access Control (MAC) layer.

In a possible implementation manner, the priority of the resource used by the data with the higher logical channel priority in the at least two resources is higher than the priority of the resource used by the data with the lower logical channel priority.

The resource priorities provided in the multiple implementation modes can be combined for use, so that multi-dimensional self-priority determination can be achieved, and the efficiency of data transmitted by different resources can be accurately ensured.

In a possible implementation manner, the determining, by the terminal device, the power factor of each of the at least two resources according to the priority of each of the at least two resources includes:

the terminal equipment determines the basic power of the cell group corresponding to the at least two resources;

the terminal equipment determines a power factor of each of the at least two resources according to the priority of each of the at least two resources and the basic power; and the sum of the adjusted power of the first power of each of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the sum of the power corresponding to each cell group is not less than the basic power corresponding to each base station.

In this embodiment, different basic powers are set for different cell groups, and on the premise of ensuring smooth transmission of resources of a high-priority cell, the situation that some cells do not have available resources is avoided.

In a possible implementation manner, a second overlapping area exists in the at least two resources, and a sum of second powers of each of the at least two resources in the second overlapping area is greater than a maximum power;

and on the second overlapping area, the terminal equipment transmits data to the wireless access equipment by using the adjusted power of the resource which does not transmit data on the first overlapping area for the resource which does not transmit data in the at least two resources.

In one possible implementation, the method includes:

if the at least two resources correspond to at least two physical channels and the sum of first powers corresponding to the at least two resources in the first overlapping area is greater than the maximum power, the terminal device determines a power factor of each of the at least two resources according to the priority of each of the at least two resources, and/or determines a power factor of each of the at least two resources according to the priority of the physical channel corresponding to each of the at least two resources; the sum of the adjusted power of the first power of each of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the power factor of the resource with the higher priority is greater and the power factor of the resource with the lower priority is smaller.

Because at least two resources can also correspond to different physical channels, in the implementation manner, the implementation dimension of the priority can be increased based on the combination of the priority of the physical channel and the priority of the resource, thereby improving the flexibility of the resource priority.

In a possible implementation manner, the priority of the physical channel corresponding to each of the at least two resources includes: priority of random access channel > priority of control channel > priority of data channel.

In a second aspect, a power control method is provided, including:

if the sum of the first powers corresponding to the at least two resources in the first overlapping area is greater than the maximum power, the terminal device determines a power factor of each of the at least two resources according to the priority of the at least two resources notified by the MAC layer; the sum of the adjusted power of the first power of each of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the power factor of the resource with the higher priority is greater and the power factor of the resource with the lower priority is smaller.

In a third aspect, a terminal device is provided, including:

a processor; and

a storage device storing instructions, coupled to the processor, that when loaded and executed by the processor, perform the steps of:

determining at least two resources, wherein the at least two resources have a first overlapping region in a time domain, and each of the at least two resources corresponds to a first power in the first overlapping region;

if the sum of the first powers corresponding to the at least two resources in the first overlapping area is greater than the maximum power, determining a power factor of each of the at least two resources according to the priority of the at least two resources notified by the MAC layer; the sum of the adjusted power of the first power of each of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the power factor of the resource with the higher priority is greater and the power factor of the resource with the lower priority is smaller.

In a possible implementation manner, the terminal device further includes:

a transceiver for performing power adjustment on each resource by using the power factor of each resource of the at least two resources; and transmitting data to the wireless access equipment according to the adjusted power of each resource.

In a possible implementation manner, the shorter the TTI length of the at least two resources is, the higher the priority is; and/or

In a possible implementation manner, the processor is further configured to notify a physical layer of the terminal device of the priority of the at least two resources through the MAC layer.

In one possible implementation, the processor is further configured to:

determining the basic power of the cell groups corresponding to the at least two resources;

determining a power factor of each of the at least two resources according to the priority of each of the at least two resources and the basic power; wherein the sum of the adjusted power of the first power of each of the at least two resources in the overlapping region based on the power factor is less than or equal to the maximum power, and the sum of the power corresponding to each cell group is not less than the basic power corresponding to each cell group.

In a possible implementation manner, in a time domain, a second overlapping area exists in the at least two resources, and a sum of second powers of each of the at least two resources in the second overlapping area is greater than a maximum power; the processor is further configured to:

and on the second overlapping area, transmitting data to the wireless access equipment by using the adjusted power of the resources which do not finish data transmission on the first overlapping area for the resources which do not finish data transmission in the at least two resources.

In one possible implementation, the processor is further configured to:

if the at least two resources correspond to at least two physical channels and the sum of first powers corresponding to the at least two resources in the first overlapping area is greater than the maximum power, determining a power factor of each of the at least two resources according to the priority of each of the at least two resources and/or determining a power factor of each of the at least two resources according to the priority of a physical channel corresponding to each of the at least two resources; the sum of the adjusted power of the first power of each of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the power factor of the resource with the higher priority is greater and the power factor of the resource with the lower priority is smaller.

In a fourth aspect, a terminal device is provided, including:

a processor; and

In a fifth aspect, there is provided a computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of the first and second aspects.

In a sixth aspect, a power control method is provided, in which a terminal device communicates data with at least two base stations, the method including:

the terminal equipment receives cell indexes of serving cells of the at least two base stations; wherein the cell indexes of the serving cells of the at least two base stations are determined by the at least two base stations through signaling interaction negotiation;

and the terminal equipment carries out power headroom report according to the cell index.

In one implementation manner, the at least two base stations include a main base station and a secondary base station, the main base station and the secondary base station negotiate a cell index of the terminal device through signaling interaction, and send part or all of the negotiated cell index to the terminal device through the main base station and/or the secondary base station.

In an implementation manner, the terminal device receives a cell activation and deactivation command sent by a main base station or a secondary base station, and determines, according to the cell activation and deactivation command including a cell index, that cells of the main base station and/or the secondary base station in cells corresponding to the received cell index are activated or deactivated.

The cell index of the serving cell of the primary base station and the cell index of the serving cell of the secondary base station are determined according to different fields predefined by the protocol.

In the solution provided in the embodiment of the present application, first, for at least two resources of the same physical channel, when power adjustment is performed in an overlapping area, transmission power allocation may be performed according to a transmitted service or resource, so as to meet a service requirement of a specific service, and improve reliability of data transmission.

Aiming at least two resources of various different physical channels, the priority of the channel and the priority of the resource can be reasonably combined, so that the data sending power is determined, and the timeliness and the reliability of different physical channels and different services can be effectively ensured.

Drawings

Fig. 1 is a schematic flowchart of a power control method according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of an overlapping area in an embodiment of the present application;

fig. 3 is a schematic diagram of power changes before and after power adjustment is performed on an overlapping area by using the method provided in the embodiment of the present application;

fig. 4 is a schematic flowchart of a power control method according to a second embodiment of the present application;

FIG. 4A is a diagram illustrating a second embodiment of the present invention after at least two resources are sorted by the method provided in the second embodiment;

fig. 5 is a schematic flowchart of a power control method according to a third embodiment of the present application;

fig. 6 is a schematic structural diagram of a terminal device according to a fifth embodiment of the present application;

fig. 7 is a schematic structural diagram of a terminal device according to a sixth embodiment of the present application.

Detailed Description

In order to more clearly and specifically describe the specific implementation process of the scheme provided by the present invention, the following method is further described in detail with reference to specific examples:

the method provided by the application realizes the power adjustment based on resources, and can realize the power adjustment of a single physical channel (or signal) and multiple physical channels (or signals). The physical channel may include: a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), and a Physical Random Access Channel (PRACH); because the solution provided by the present application is to allocate power for different service requirements, the physical channel mentioned in the embodiment of the present application can also be interpreted as a physical signal based on the principle, where the physical signal may be: sounding Reference Signal (SRS).

In order to more clearly and specifically describe the method provided by the present application, the following further describes the scheme of the present application by taking a single physical channel or multiple physical channels as an example.

Example one

For a single physical channel or signal, as shown in fig. 1, an embodiment of the present application provides a power control method, which may specifically include the following implementation steps:

step 101, a terminal device determines at least two resources, wherein the at least two resources have a first overlapping area in a time domain, and each of the at least two resources corresponds to a first power in the first overlapping area;

in this embodiment of the present application, the manner of determining at least two resources may be:

a1, the terminal equipment receives at least one indication of the network equipment;

the manner in which the terminal device receives the indication may be: the indication is received through Radio Resource Control (RRC) and/or received through Downlink Control Information (DCI).

A2, the at least one indication is used for allocating at least two resources, and the at least two resources are used for carrying out uplink transmission of at least two data.

In this embodiment, the at least two resources are resources of at least one cell, and the at least two resources may include at least one of the following types of resources: time domain resources, time Frequency resources, beam (beam) based time Frequency resources, air interface format based time Frequency resources, radio resources for terminal to terminal (D2D) communication and radio resources for terminal to network device communication, radio resources for Orthogonal Frequency Division Multiplexing (OFDM), radio resources for Single-carrier Frequency-Division Multiple Access (SC-FDMA), contention-based time Frequency resources. The air interface format is a parameter set of subcarrier spacing and cyclic prefix, such as set by a numerology (numerology) parameter.

Optionally, as shown in fig. 2, in this embodiment, the first overlapping area refers to a portion corresponding to the first time domain corresponding to the overlapping area in fig. 2, and if it is determined that the value of the first time domain is greater than a set threshold, it may be determined that the area corresponding to the first time domain is the overlapping area. The terminal equipment determines a first power in a first time domain of a cell 1; determining another first power in the first time domain of the cell 2; if the sum of the first powers corresponding to the cell1 and the cell2 in the first time domain is greater than the maximum power, that is, the power control scenario addressed in the embodiment of the present application.

Step 102, if the at least two resources correspond to the same physical channel, and a sum of first powers corresponding to the at least two resources in the first overlapping area is greater than a maximum power (the maximum power may be a maximum output power of a terminal device in an overlapping area), the terminal device determines a power factor of each of the at least two resources according to a priority of each of the at least two resources; the sum of the adjusted power of the first power of each of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the power factor of the resource with the higher priority is greater and the power factor of the resource with the lower priority is smaller.

When the sum of the powers in the first overlapping area is greater than the maximum power, power adjustment (or called power adjustment) is required, and the specific adjustment manner may be to expand, reduce, or keep the first power unchanged. If the total transmit power does not exceed the maximum power, the transmit power corresponding to other resources may be adjusted to remain unchanged, and the specific other resources may include other resources for activating the serving cell for uplink transmission of the terminal device, or resources for uplink transmission of the terminal device for other TTI lengths of the cell. The maximum power can also be understood as the maximum output power, such as the linear value of the UE total configured maximum output power.

Optionally, the range of the power factor may be greater than or equal to 0, and after the first power is adjusted, the terminal device may perform data transmission based on the adjusted power, and the specific implementation may be:

103, the terminal equipment respectively adjusts the power of each resource by using the power factor of each resource of the at least two resources; and transmitting data to the wireless access equipment according to the adjusted power of each resource.

Optionally, in this embodiment of the present application, the priority of at least two resources may be predefined by a protocol, or may be preconfigured by a network device. In addition, the priority provided by this embodiment may be determined by parameters of multiple dimensions, which may specifically include:

in type 1, the priority of the resource is determined based on a Transmission Time Interval (TTI) and/or a subcarrier Interval of the resource, which may specifically be:

the shorter the TTI length (TTI length can also be understood as the duration of the time domain resource of the resource) of the at least two resources, the higher the priority; and/or

In this embodiment, when the priority of the TTI length and the priority of the subcarrier spacing are used in combination, the priority of the TTI length may be determined first, and then the priority of the subcarrier spacing may be determined, or vice versa. Specifically, in the at least two resources, for the same TTI length, the resource with narrow subcarrier spacing has a high priority, and the resource with wide subcarrier spacing has a low priority; or in the at least two resources, for the same subcarrier interval, the resource with short TTI length has high priority, and the resource with long TTI length has low priority.

In a specific application environment, if priority based on TTI length is used, as shown in fig. 2, for Cell 1(Cell1) and Cell 2(Cell2), the base station allocates uplink resources in both cells, where the TTI length of the uplink resource of Cell1 is 1ms, and the TTI length of the uplink resource of Cell2 is 0.5 ms. In the overlapping area of the two uplink resources, the sum of the first powers determined by the terminal device for the two uplink transmissions is greater than the maximum output power, and at this time, power adjustment is required to ensure the requirement of the transmission power. Since the TTI of the Cell2 is short, and the Quality of Service (QoS) requirement of data carried on a resource with a short TTI is generally high, the terminal device preferentially guarantees data transmission of the Cell 2. If there is remaining power, then the remaining power is allocated to the Cell1 for data transmission. As shown in fig. 3.

The specific implementation may be that the transmission power of the Cell1 at the beginning of the terminal device is P1, where P1 is less than the maximum output power Pcmax, and power is insufficient due to uplink transmission of the Cell2, that is, P1+ P2 is greater than Pcmax, so that power adjustment is performed, the transmission power of the Cell1 is reduced from P1 to P1', and the transmission power of the Cell2 is P2, where P2+ P1 ═ Pcmax.

Optionally, for a physical channel being a control channel, the control channel may be used for transmitting Channel State Information (CSI)/Scheduling Request (SR)/Hybrid Automatic Repeat Request (HARQ) feedback. In order to meet the traffic demand of delay-sensitive and insensitive downlink data, the PUCCH may be divided into a short PUCCH and a long PUCCH according to the TTI length corresponding to the PUCCH, for HARQ feedback, the short PUCCH only needs to occupy one or several OFDM or SC-FDMA symbols, the long PUCCH is longer than the short PUCCH in resource duration, for example, the number of occupied OFDM or SC-FDMA symbols in the same numerology scenario is large, and the long PUCCH and the short PUCCH may be used for transmitting CSI/SR/HARQ feedback (delay-insensitive downlink data), if the long PUCCH and the short PUCCH are transmitted simultaneously, the power allocation of the short PUCCH is prioritized, and if there is remaining power, the remaining power may be used for data transmission of the long PUCCH. The following list of possibilities, at least one of which is satisfied:

1. HARQ feedback for short PUCCH > HARQ feedback for long PUCCH

2. CSI for short PUCCH > CSI for long PUCCH

3. SR of short PUCCH > SR of long PUCCH

4. HARQ feedback for short PUCCH > CSI for long PUCCH

5. HARQ feedback for short PUCCH > SR for long PUCCH

6. CSI for SR > long PUCCH for short PUCCH

Wherein the CSI channel state information includes at least one of: the CQI channel quality information is used for the base station to select a modulation coding scheme so as to better utilize wireless resources; PMI precoding matrix indication for multi-antenna transmission. RI rank (layer) indication is used in multi-antenna transmission. PTI precoding type indication used in multi-antenna transmission. The HARQ feedback is used to notify the network device whether the downlink data is successfully decoded by the terminal device.

And 2, determining the priority of the resource according to the priority of the cell corresponding to the resource. The specific implementation can be as follows:

and if the at least two resources correspond to different cells, according to a preset cell priority, the higher the priority of the cell corresponding to the resource in the at least two resources is, the higher the priority of the corresponding resource is.

Optionally, if the cell is divided into:

high-frequency cell: the working frequency band is greater than or equal to 6 GHz;

and a low-frequency cell: the working frequency band is less than 6 GHz;

the unauthorized cell: the spectrum resources are shared, and it can also be understood as spectrum resources that can be shared with wireless guarantees (wifi). It can also be understood that cells requiring idle channel detection, e.g., energy detection, before transmitting data. If the energy detection is lower than the threshold, the system is considered to be idle and can send data; otherwise, the system is considered busy and data transmission is not possible.

The authorized cell: the spectrum resources are dedicated to unlicensed cells.

The dividing principle may be that the priority of the low frequency authorized cell > the priority of the low frequency unauthorized cell > the priority of the high frequency authorized cell > the priority of the high frequency unauthorized cell, and specifically, the priority of the cell during the comparison may be at least one of the following:

1. the priority of the low-frequency authorized cell is greater than that of the high-frequency authorized cell;

2. the priority of the low-frequency authorized cell is greater than that of the high-frequency unauthorized cell;

3. the priority of the low-frequency authorized cell is greater than that of the low-frequency unauthorized cell;

4. the priority of the low-frequency unauthorized cell is greater than that of the high-frequency unauthorized cell;

5. the priority of the low-frequency unauthorized cell is greater than that of the high-frequency unauthorized cell;

6. the priority of the high-frequency authorized cell is greater than that of the high-frequency unauthorized cell;

7. the priority of the low-frequency unauthorized cell is greater than that of the high-frequency authorized cell;

8. the priority of the high-frequency authorized cell is greater than that of the low-frequency unauthorized cell.

Optionally, the priority of the cell in this embodiment may be predefined by a protocol, or may be preconfigured by the network device.

For example, the at least two resources include a first resource and a second resource, and a cell corresponding to the first resource is a low frequency cell; the cell corresponding to the second resource is a high-frequency cell; according to the priority principle of the cell: for at least two resources with the same TTI length, the priority of the low-frequency cell is higher than that of the high-frequency cell, and then the priority of the corresponding first resource is higher than that of the second resource.

In some embodiments, the cells may also belong to different cell groups, and there is a priority for the cell groups, in which case, when determining the priority of the resources, the priority of the cell groups may also be considered, and the specific implementation may be:

and if the different cells belong to different cell groups, the higher the priority of the cell group corresponding to the resource in the at least two resources is, the higher the priority of the corresponding resource is according to the preset priority of the cell group.

Optionally, the priority of the cell group in this embodiment may be predefined by a protocol, or may be preconfigured by the network device.

The priority of the first cell group is higher than that of the second cell group, if the first cell belongs to the first cell group, the second cell belongs to the second cell group, the first resource corresponds to the first cell, and the second resource corresponds to the second cell, when the priority between the first resource and the second resource is determined, one of the priority of the cell group or the priority of the cell can be selected for judgment, or the judgment can be carried out simultaneously, if the priority of the cell group conflicts with the priority of the cell, a judgment criterion can be preset, for example, the priority of the cell is taken as a final result, or the priority of the cell group is taken as a final result. For example, in a scenario of dual connectivity, the first Cell Group is a Master Cell Group (MCG), and the second Cell Group is a Secondary Cell Group (SCG).

For example, the at least two resources include a first resource and a second resource, and a cell group corresponding to the first resource is a master cell group; the cell group corresponding to the second resource is an auxiliary cell group; according to the priority principle of the cell group: for at least two resources with the same TTI length, the priority of the main cell group is higher than that of the auxiliary cell group, and then the priority of the corresponding first resource is higher than that of the second resource.

In type 3, the priority of at least two resources is determined by the priority of a Media Access Control (MAC) packet corresponding to the at least two resources, and the specific implementation may be:

and the terminal equipment informs the priority of the at least two resources to a physical layer of the terminal equipment through an MAC layer, wherein the priority of the at least two resources corresponds to the MAC packet corresponding to the at least two resources.

In this embodiment, the MAC layer may construct a MAC packet based on a mapping relationship between a logical channel and a TTI length, and then, for the constructed MAC packet, the priority of the MAC packet may be determined according to the logical channel corresponding to data transmitted by the MAC packet or the priority of the TTI length, which may be specifically implemented as:

the priority of the resource used by the data with high priority of the logical channel (namely, the MAC packet) in the at least two resources is higher than that used by the data with low priority of the logical channel.

The 4 th step, determining the priority of the resource based on whether the resource transmits data, may specifically be:

in a time domain, a second overlapping area exists in the at least two parts of resources, and the sum of second power of each part of the at least two parts of resources in the second overlapping area is larger than the maximum power;

Optionally, on the second overlapping area, the terminal device performs power adjustment on other resources, including the second overlapping area, of the at least two resources except for the resource for which data is not completely transmitted. That is, in this embodiment, when performing power adjustment on at least two resources, the power adjustment may be performed in units of overlapping areas; if the second overlapping area is power adjusted, power adjustment is performed only for resources including the second overlapping area.

The specific implementation of this embodiment may be: in the second overlapping area, if the sum of the second power of at least two resources is greater than the maximum output power, the power allocation of the resource for data transmission using the allocated power is preferentially guaranteed in the at least two resources, and the power is not allocated when the power adjustment is performed on the data not using the allocated power.

The four resource priorities are only some implementation manners of this embodiment, and the priority division of at least two resources may also be displayed in other manners during specific implementation, which is not described herein again. In addition, the priority descriptions are implemented separately, but the various priority principles can be used in combination when the implementation is specific, for example, the priority of the TTI length is used in combination with the priority of the subcarrier spacing; the priority of the TTI length of at least two resources can be judged firstly, if the priority of the TTI length is the same; then the priority of the subcarrier interval can be judged again; or the priority of the subcarrier intervals of at least two resources can be judged firstly, if the priority of the subcarrier intervals is the same; the priority of the TTI length may be determined again.

Optionally, when performing resource allocation based on the priority, it may occur that the TTI length of the Unlicensed cell/the high frequency cell (HF cell) is very small and/or the subcarrier interval is very large, but the requirement of the transmitted data on delay and reliability is not high, it may not be necessary to preferentially guarantee the transmission power, and the requirement may be equal to a low priority among the preset priorities.

The scheme in this embodiment may be that a basic power corresponding to a cell group is set for different cell groups (that is, each base station corresponds to one basic guaranteed power), and specifically, the determining, by the terminal device, the power factor of each of the at least two resources according to the priority of each of the at least two resources includes:

the terminal equipment determines a power factor of each of the at least two resources according to the priority of each of the at least two resources and the basic power; wherein the sum of the adjusted power of the first power of each of the at least two resources in the overlapping region based on the power factor is less than or equal to the maximum power, and the sum of the power corresponding to each cell group is not less than the basic power corresponding to each cell group.

For example: the UE may perform data communication with at least two base stations, and in order to avoid that a certain base station has no power to transmit, a corresponding basic power may be pre-configured in a cell group of each base station, for example, the first basic power is the basic guaranteed power of a cell group of a master base station, and the second basic power is the basic guaranteed power of a cell group of a secondary base station. The terminal equipment preferentially meets the first basic power and the second basic power when performing power distribution in the overlapping area. For the remaining power, the power allocation is performed according to the aforementioned various priority principles.

Example two

For at least two physical channels, as shown in fig. 4, an embodiment of the present application provides a power control method, which may specifically include the following implementation steps:

step 401, a terminal device determines at least two resources, where the at least two resources have a first overlapping area in a time domain, and each of the at least two resources corresponds to a first power in the first overlapping area;

step 402, if the at least two resources correspond to at least two physical channels and the sum of the first powers corresponding to the at least two resources in the first overlapping area is greater than the maximum power, the terminal device determines the power factor of each of the at least two resources according to the priority of each of the at least two resources, and/or determines the power factor of each of the at least two resources according to the priority of the physical channel corresponding to each of the at least two resources; the sum of the adjusted power of the first power of each of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the power factor of the resource with the higher priority is greater and the power factor of the resource with the lower priority is smaller.

In this embodiment, the at least two physical channels may be PUSCH and PUCCH. And if the priority of the physical channel is associated with the priority of at least two resources, the at least two resources comprise a first resource and a second resource, the first resource corresponds to a PUCCH resource, the second resource corresponds to a PUSCH resource, and the sum of the power factors of each resource of the first resource is not less than the sum of the power factors of each resource of the second resource. The power factor corresponding to the same channel can be determined according to the method of the first embodiment.

Because the resources in the method of this embodiment may correspond to different physical channels, the priority of the physical channel may also be referred to when determining the priority of the resources, where the priority of the physical channel corresponding to each of the at least two resources includes: priority of random access channel > priority of control channel > priority of data channel.

Step 403, the terminal device uses the power factor of each of the at least two resources to respectively perform power adjustment on each resource; and transmitting data to the wireless access equipment according to the adjusted power of each resource.

In this embodiment, the priority of the physical channel and the priority of the resource may be used alone or in combination, and when used in combination, the priority of the channel may be determined in advance, and then the priority of the resource may be determined; and vice versa.

Taking the PUCCH and PUSCH as examples, each channel has two TTI lengths, and when the priority of the physical channel is used in combination with the priority of the resource, the method provided in this embodiment can implement prioritization of at least two resources by the following two ways, including:

in the first mode, the priority of the resources is that at least two resources are sorted according to the TTI length (the shorter the TTI length, the higher the priority is), and for the resources with the same TTI length, the resources are sorted again according to the channel priority (for example, the priority of the preset physical channel is: PUCCH > PUSCH) (the sorted result is shown in the first mode in fig. 4A);

in the second mode, the principle of priority of the physical channels is to sort according to the priority of the physical channels (for example, the preset priority of the physical channels is PUCCH > PUSCH), and if multiple resources correspond to the same physical channel, to sort again according to the TTI length (the shorter the TTI length, the higher the priority is) (the result after sorting is shown in the second mode in fig. 4A).

EXAMPLE III

As shown in fig. 5, both of the first and second embodiments determine the priority of each resource at the physical layer, and the embodiment may also determine the priority of at least two resources at the MAC layer, and specifically, the power control method provided by the embodiment includes:

step 501, a terminal device determines at least two resources, where the at least two resources have a first overlapping area in a time domain, and each of the at least two resources corresponds to a first power in the first overlapping area;

step 502, if the sum of the first powers corresponding to the at least two resources in the first overlapping area is greater than the maximum power, the terminal device determines a power factor of each of the at least two resources according to the priority of the at least two resources notified by the MAC layer; the sum of the adjusted power of the first power of each of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the power factor of the resource with the higher priority is greater and the power factor of the resource with the lower priority is smaller.

Step 503, the terminal device uses the power factor of each of the at least two resources to respectively perform power adjustment on each resource; and transmitting data to the wireless access equipment according to the adjusted power of each resource

In this embodiment, the manner for the terminal device to determine the resource priority at the MAC layer may be:

b1, the terminal device multiplexes data and assembles the at least one MAC packet according to the mapping relation between the pre-configured logical channel and the TTI length;

for example, logical channel 1 has 200bytes of data and can be transmitted over TTI length 1, and logical channel 2 has 300bytes of data and can be transmitted over TTI lengths 1 and 2. Logical channel 1 has a higher priority than logical channel 2. The base station allocates 400bytes of radio resources of TTI length 1, which is TTI length 1. The MAC layer of the terminal device performs resource allocation according to the logical channel of the radio resource and the priority of the TTI length, and the allocation results are as follows: logical channel 1 transfers 200bytes of data, logical channel 2 transfers 200bytes of data, and the remaining 100bytes of data may be left until the next time the base station allocates a new radio resource before data transmission. In addition, the base station allocates 100bytes uplink resources of TTI length 2, the MAC layer of the terminal device allocates resources according to the wireless resources and the logical channels and the priority of TTI length, and the allocation result is as follows: logical channel 2 transports 100bytes of data. If there is an overlapping region in the time domain for the radio resources of TTI length 1 and TTI length 2, in the overlapping region, the terminal device allocates the power of the resource of TTI length 1 preferentially since the priority of the logical channel of the data transmitted by the resource of TTI length 1 is higher, and allocates the power of the resource of TTI length 2 if there is remaining power.

B2, determining the power priority of the at least one MAC packet according to the data of the logical channel included in the at least one MAC packet.

And the physical layer of the terminal equipment receives the priority determined by the terminal equipment through the MAC layer and carries out power adjustment operation according to the priority.

Example four

In the prior art, if the terminal device performs data communication with at least two base stations, the main base station configures cells 1 and 2 for the UE, and the auxiliary base station configures cells 2 and 3 for the UE. However, when reporting the power headroom report, the UE needs to report the power headroom of all cells. Since the primary base station and the secondary base station simultaneously configure the cell No. 2 for the UE, but the reporting format of the existing power headroom report cannot distinguish the two cells, the cell No. 2 is confused when reporting, and the present application further provides a power control method based on the prior art, in which the terminal device performs data communication with at least two base stations, the method includes:

c1, the terminal equipment receives the cell indexes of the service cells of the at least two base stations; wherein the cell indexes of the serving cells of the at least two base stations are determined by the at least two base stations through signaling interaction negotiation;

in this embodiment, the at least two base stations may include a primary base station and a secondary base station, where the primary base station and the secondary base station may negotiate a cell index of the terminal device through signaling interaction, and send part or all of the negotiated cell index to the terminal device through the primary base station and/or the secondary base station;

and C2, the terminal equipment reports the power headroom according to the cell index.

Optionally, for the cell corresponding to the terminal device, the terminal device may further receive a cell activation and deactivation command sent by the primary base station or the secondary base station, and determine, according to the cell activation and deactivation command including the cell index, that the cells of the primary base station and/or the secondary base station in the cell corresponding to the received cell index are activated or deactivated.

In this embodiment, different fields for the power headroom report or the activation and deactivation commands may be predefined by a protocol for indicating the cell index of the serving cell of the primary base station and the cell index of the serving cell of the secondary base station. And the terminal equipment predefines different fields based on the protocol to carry out power headroom reporting.

EXAMPLE five

As shown in fig. 6, based on the foregoing method, an embodiment of the present application further provides a terminal device, including:

a processor 601; and

a storage device 602 storing instructions, coupled to the processor, that when loaded and executed by the processor, perform the steps of:

Optionally, the terminal device further includes:

Optionally, the shorter the TTI length of the at least two resources, the higher the priority; and/or the narrower the subcarrier spacing of the at least two resources, the higher the priority.

Optionally, the at least two resources correspond to different cells, and according to a preset cell priority, the higher the priority of the cell corresponding to the resource in the at least two resources is, the higher the priority of the corresponding resource is.

Optionally, if the different cells belong to different cell groups, according to a preset priority of the cell group, the higher the priority of the cell group corresponding to the resource in the at least two resources is, the higher the priority of the corresponding resource is.

Optionally, the cells include a low-frequency authorized cell, a low-frequency unauthorized cell, a high-frequency authorized cell, and a high-frequency unauthorized cell, and the priority of the cell includes: the priority of the low-frequency authorized cell > the priority of the low-frequency unauthorized cell > the priority of the high-frequency authorized cell > the priority of the high-frequency unauthorized cell.

Optionally, the processor is further configured to notify a physical layer of the terminal device of the priorities of the at least two resources through the MAC layer.

Optionally, the priority of the resource used by the data with high logical channel priority in the at least two resources is higher than the priority of the resource used by the data with low logical channel priority.

Optionally, the processor is further configured to:

Optionally, in a time domain, a second overlapping area exists in the at least two resources, and a sum of second powers of each of the at least two resources in the second overlapping area is greater than a maximum power; the processor is further configured to:

Optionally, the processor is further configured to:

Optionally, the priority of the physical channel corresponding to each of the at least two resources includes: priority of random access channel > priority of control channel > priority of data channel.

EXAMPLE six

As shown in fig. 7, based on the foregoing method, an embodiment of the present application further provides another terminal device, including:

a processor 701; and

a storage device 702 storing instructions, coupled to the processor, that when loaded and executed by the processor, perform the steps of:

EXAMPLE seven

Based on the methods provided by the first and second embodiments, the embodiments of the present application further provide another terminal device, where the terminal device includes:

a determining unit, configured to determine at least two resources, where the at least two resources have a first overlapping area in a time domain, and each of the at least two resources corresponds to a first power in the first overlapping area;

an adjusting unit, configured to determine a power factor of each of the at least two resources according to a priority of each of the at least two resources if the at least two resources correspond to the same physical channel and a sum of first powers of the at least two resources corresponding to the first overlapping area is greater than a maximum power; the sum of the adjusted power of the first power of each of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the power factor of the resource with the higher priority is greater and the power factor of the resource with the lower priority is smaller.

The determining unit and the adjusting unit may implement all the contents provided in the first and second embodiments, and the specific implementation manner is the same according to the first embodiment, and is not described herein again.

EXAMPLE seven

Based on the method provided by the third embodiment, the embodiment of the present application further provides another terminal device, where the terminal device includes:

an adjusting unit, configured to determine, if a sum of first powers corresponding to the at least two resources in the first overlapping area is greater than a maximum power, a power factor of each of the at least two resources according to a priority of the at least two resources notified by an MAC layer; the sum of the adjusted power of the first power of each of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the power factor of the resource with the higher priority is greater and the power factor of the resource with the lower priority is smaller.

Because the solution provided by the foregoing embodiment can be implemented by physical hardware and can also be implemented by a software program, when the solution of the foregoing embodiment is implemented by a software program, all the instructions corresponding to the foregoing implementation scheme can be stored in a computer-readable storage medium, the embodiment also provides a computer-readable storage medium, which includes instructions that, when run on a computer, cause the computer to execute the method described in the first to third embodiments.

The method of the present invention is not limited to the examples described in the specific embodiments, and those skilled in the art can derive other embodiments according to the technical solutions of the present invention, and also fall into the technical innovation scope of the present invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method of power control, the method comprising:

if the at least two resources correspond to the same physical channel and the sum of first powers corresponding to the at least two resources in the first overlapping area is greater than the maximum power, the terminal device determines a power factor of each of the at least two resources according to the priority of each of the at least two resources; the sum of the adjusted power of the first power of each of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the power factor of the resource with the higher priority in the at least two resources is greater, and the power factor of the resource with the lower priority is smaller;

wherein, the shorter the transmission time interval TTI length of the at least two resources is, the higher the priority is; and/or

2. The method of claim 1, wherein the method further comprises:

3. The method of claim 1 or 2, wherein the at least two resources correspond to different cells, and according to a preset cell priority, the higher the priority of the cell corresponding to the resource in the at least two resources is, the higher the priority of the corresponding resource is.

4. The method of claim 3, wherein the different cells belong to different cell groups, and the higher the priority of the cell group corresponding to the resource in the at least two resources is, the higher the priority of the corresponding resource is, according to a preset priority of the cell group.

5. The method of claim 3, wherein the cells comprise a low frequency licensed cell, a low frequency unlicensed cell, a high frequency licensed cell, a high frequency unlicensed cell, and wherein the priorities of the cells comprise:

6. The method of claim 1 or 2, wherein the method further comprises:

7. The method according to claim 1 or 2, wherein the resource used by the data with the higher logical channel priority in the at least two resources has a higher priority than the resource used by the data with the lower logical channel priority.

8. The method of claim 1 or 2, wherein the terminal device determining the power factor for each of the at least two resources according to the priority of each of the at least two resources comprises:

the terminal equipment determines a power factor of each of the at least two resources according to the priority of each of the at least two resources and the basic power; and the sum of the powers of the at least two resources after the adjustment of the first power of each resource in the overlapping area is less than or equal to the maximum power based on the power factor, and the sum of the powers corresponding to each cell group is not less than the basic power corresponding to each base station.

9. The method of claim 1 or 2, wherein in a time domain, a second overlapping region exists in the at least two resources, and a sum of second powers of each of the at least two resources in the second overlapping region is greater than a maximum power;

10. The method of claim 1 or 2, comprising:

11. The method of claim 10, wherein the priority of the physical channel corresponding to each of the at least two resources comprises: priority of random access channel > priority of control channel > priority of data channel.

12. A method of power control, comprising:

if the sum of the first powers corresponding to the at least two resources in the first overlapping area is greater than the maximum power, the terminal device determines the priority of the at least two resources on an MAC layer, and determines the power factor of each of the at least two resources according to the priority of the at least two resources notified by the MAC layer; the sum of the adjusted power of the first power of each of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the power factor of the resource with the higher priority in the at least two resources is greater, and the power factor of the resource with the lower priority is smaller;

wherein, the terminal device determines the priority of the at least two resources at the MAC layer, including:

the terminal equipment multiplexes and assembles data according to a mapping relation between a pre-configured logical channel and the Transmission Time Interval (TTI) length of the at least two resources to obtain at least one MAC packet corresponding to the at least two resources;

and the terminal equipment determines the priority of the at least two resources according to the priority of the at least one MAC packet.

13. A terminal device, comprising:

a processor; and

if the at least two resources correspond to the same physical channel and the sum of first powers corresponding to the at least two resources in the first overlapping area is greater than the maximum power, determining a power factor of each of the at least two resources according to the priority of each of the at least two resources; the sum of the adjusted power of the first power of each of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the power factor of the resource with the higher priority in the at least two resources is greater, and the power factor of the resource with the lower priority is smaller;

14. The terminal device of claim 13, wherein the terminal device further comprises:

15. The terminal device according to claim 13 or 14, wherein the at least two resources correspond to different cells, and according to a preset cell priority, the higher the priority of the cell corresponding to the resource in the at least two resources is, the higher the priority of the corresponding resource is.

16. The terminal apparatus of claim 15, wherein the different cells belong to different cell groups, and according to a preset priority of the cell groups, the higher the priority of the cell group corresponding to the resource in the at least two resources is, the higher the priority of the corresponding resource is.

17. The terminal device of claim 15, wherein the cells include a low frequency licensed cell, a low frequency unlicensed cell, a high frequency licensed cell, a high frequency unlicensed cell, and wherein the priorities of the cells include:

18. The terminal device of claim 13 or 14, wherein the processor is further configured to inform a physical layer of the terminal device of the priority of the at least two resources through a MAC layer.

19. The terminal apparatus according to claim 13 or 14, wherein the resource used by the data with the higher logical channel priority in the at least two resources has a higher priority than the resource used by the data with the lower logical channel priority.

20. The terminal device of claim 13 or 14, wherein the processor is further configured to:

21. The terminal device of claim 13 or 14, wherein in a time domain, a second overlapping region exists in the at least two resources, and a sum of second powers of each of the at least two resources in the second overlapping region is greater than a maximum power; the processor is further configured to:

22. The terminal device of claim 13 or 14, wherein the processor is further configured to:

23. The terminal device of claim 22, wherein the priority of the physical channel corresponding to each of the at least two resources comprises: priority of random access channel > priority of control channel > priority of data channel.

24. A terminal device, comprising:

a processor; and

if the sum of first powers corresponding to the at least two resources in the first overlapping area is larger than the maximum power, determining the priority of the at least two resources at an MAC layer, and determining the power factor of each of the at least two resources according to the priority of the at least two resources notified by the MAC layer; the sum of the adjusted power of the first power of each of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the power factor of the resource with the higher priority in the at least two resources is greater, and the power factor of the resource with the lower priority is smaller;

the processor is specifically configured to perform data multiplexing and assembling according to a mapping relationship between a preconfigured logical channel and the TTI lengths of the transmission time intervals of the at least two resources to obtain at least one MAC packet corresponding to the at least two resources; and determining the priority of the at least two resources according to the priority of the at least one MAC packet.

25. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1-12.