CN107079408B

CN107079408B - Power adjustment method and device

Info

Publication number: CN107079408B
Application number: CN201580004496.2A
Authority: CN
Inventors: 徐文颖; 张鹏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-08-21
Filing date: 2015-08-21
Publication date: 2020-02-14
Anticipated expiration: 2035-08-21
Also published as: WO2017031641A1; CN107079408A

Abstract

The invention provides a power adjusting method and a device, wherein the power adjusting method comprises the following steps: receiving Transmission Power Control (TPC) commands from at least two links, wherein the TPC commands on at least one link adopt a second power control algorithm; screening TPC commands on each link in an adjusting period to obtain power adjusting commands; and adjusting the transmission power according to the power adjustment command. In the invention, the UE screens the TPC commands on each link in an adjusting period, when the TPC commands on each link received by the UE comprise the TPC commands of the second control algorithm, only one power adjusting command is determined corresponding to one adjusting period, and power adjustment is carried out at most once in one adjusting period, thereby solving the problem of too frequent power adjustment when the TPC commands on each link of the UE comprise the TPC commands of the second control algorithm.

Description

Power adjustment method and device

Technical Field

The present invention relates to mobile communications technologies, and in particular, to a power adjustment method and apparatus.

Background

UMTS (Universal Mobile Telecommunications System), is one of the global 3G standards set by the international organization for standardization 3GPP (3rd Generation Partnership Project). WCDMA (Wideband Code Division Multiple Access) is one of the mainstream technologies of the third generation mobile communication system, and is applied in the early version of UMTS, and in the later version, an HSDPA (High Speed Downlink Packet Access) technology is introduced to improve the Downlink data transmission rate, and an HSUPA (High Speed Uplink Packet Access) technology is introduced to improve the Uplink data transmission rate, and reduce the user data transmission delay, so as to make the user have better experience in the UMTS network.

In UMTS, a power control method is used to maintain stable reception quality of a received signal against the influence of channel fading. In the Power Control method, in order to implement Power Control on an uplink channel, a TPC (Transmission Power Control) command is used to regulate and Control uplink Transmission Power of the UE, wherein the TPC command is transmitted on the downlink channel, when the UE receives the TPC command, the TPC command is analyzed, and a Power Control algorithm used based on the TPC command indicates to increase the uplink Transmission Power or decrease the uplink Transmission Power.

TPC commands in different radio links may use different power control algorithms, for example, the power control algorithms used on the radio links may include:

the first power control algorithm: and receiving the TPC command in each time slot of a period, carrying out hard judgment on the TPC command, and determining a power regulation and control result according to the hard judgment result of a plurality of TPC commands in the period.

The second power control algorithm: and receiving a TPC command in a specific time slot of each period, and regulating and controlling power according to the indication of the TPC command after receiving the TPC command.

The third power control algorithm: and receiving the TPC commands in each time slot of a period, wherein the TPC commands in the same period are all the same, combining the TPC commands received in the period, and determining a power regulation and control result.

For a UE, when it has only one radio link established, it can directly perform power control according to the power control algorithm adopted by the TPC command. When a UE establishes multiple radio links, especially when at least one radio link employs the second power control algorithm, the power adjustment may be performed after receiving the TPC command in the second power control algorithm, which may cause a problem of too frequent power adjustment.

Disclosure of Invention

The embodiment of the invention provides a power adjustment method and a power adjustment device, which are used for screening TPC commands on a plurality of links of UE (user equipment), determining power adjustment commands and reducing the frequency of power adjustment of the UE.

In a first aspect, an embodiment of the present invention provides a power adjustment method, including:

receiving Transmission Power Control (TPC) commands from at least two links, wherein the TPC command on at least one link adopts a second power control algorithm, and the link adopting the second power control algorithm sends and executes one TPC command per cycle;

screening TPC commands on each link in an adjusting period to obtain power adjusting commands;

and adjusting the transmission power according to the power adjustment command.

Optionally, the screening the TPC commands on each link in one adjustment period to obtain the power adjustment command includes:

determining whether a power down TPC command is received during an adjustment period;

and if the power down TPC command is received, determining that the power adjustment command is a power down adjustment command.

Optionally, the determining whether the power down TPC command is received within an adjustment period includes:

determining whether a power down TPC command is received or not within a preset time period of an adjustment cycle, wherein the preset time period is a fixed sending time period of the TPC command of the second power control algorithm, the time length of the preset time period is an integral multiple of the length of one time slot, and if the power down TPC command is received, determining that the power adjustment command is a power down adjustment command;

if the received TPC commands are all power-up TPC commands in the preset time period, determining that the power adjustment commands are power-up adjustment commands, or determining whether power-down TPC command judgment results exist in TPC command judgment results of other power control algorithms except the second power control algorithm when the adjustment period is determined to be finished, and if so, determining that the power adjustment commands are power-down adjustment commands;

if the judgment results of the TPC commands on the links adopting other power control algorithms are all power-up TPC commands, determining the power adjustment command as a power-up adjustment command;

if the judgment results of the TPC commands on the links adopting other power control algorithms at least comprise one judgment result of the power keeping TPC command, determining the power adjustment command as a power rising adjustment command or determining the power adjustment command as a power keeping command according to the number of the power keeping TPC commands on all the links and the number of the power rising TPC commands.

Optionally, the adjusting the transmission power according to the power adjustment command includes:

if the power adjustment command is determined in the preset time period, adjusting the transmission power according to the power adjustment command in a preset time slot after the preset time period is finished or in a preset time slot after the adjustment period;

and determining the power adjustment command when the adjustment period is finished, and adjusting the transmission power according to the power adjustment command in a preset time slot after the adjustment period is finished.

determining whether a power down TPC command of the second power control algorithm is received or not in each time period in an adjusting period in sequence, wherein the time periods are not overlapped, and the sum of the lengths of the time periods is the same as the adjusting period; upon receipt, determining that the power adjustment command is a power down adjustment command;

if the received TPC commands of the second power control algorithm are all power-up TPC commands, determining whether a power-down TPC command judgment result exists in TPC command judgment results on links adopting other power control algorithms except the second power control algorithm when the adjustment period is finished; if the power adjustment command exists, determining that the power adjustment command is a power reduction adjustment command;

if a power down TPC command is received in a time period in the adjusting period, adjusting the sending power according to the power down adjusting command in a preset time slot after the time period of the power down TPC command is finished; or, in a preset time slot after the adjustment period, adjusting the transmission power according to the power down adjustment command;

if the power adjustment command is determined at the end of the adjustment period, adjusting the transmission power according to the power down adjustment command at a preset time slot after the adjustment period.

when one adjusting period is finished, determining whether a TPC command of a second power control algorithm and a TPC command judgment result adopting other power control algorithms have a power reduction TPC command, and if so, determining the power adjusting command as a power reduction adjusting command;

if the judgment results of the TPC command adopting the second power control algorithm and the TPC commands on the links adopting other power control algorithms are power-up TPC commands, determining the power adjustment command as a power-up adjustment command;

if the TPC commands adopting the second power control algorithm are all power-up TPC commands, and the judgment results of the TPC commands on the links adopting other power control algorithms at least comprise one judgment result of the power-up TPC command, determining the power adjustment command as a power-up adjustment command or determining the power adjustment command as a power-up maintenance command according to the number of the power-up TPC commands and the number of the power-up TPC commands on all the links.

and adjusting the transmission power according to the power adjustment command in a preset time slot after the adjustment period.

In a second aspect, an embodiment of the present invention provides a power adjustment apparatus, including:

a receiver, configured to receive TPC commands from at least two links, where the TPC commands on at least one link use a second power control algorithm, and the link using the second power control algorithm transmits and executes one TPC command per cycle;

the processor is used for screening the TPC commands on each link in an adjusting period to obtain power adjusting commands; and adjusting the transmission power according to the power adjustment command.

Optionally, the processor is specifically configured to determine whether a power down TPC command is received within an adjustment period; and if the power down TPC command is received, determining that the power adjustment command is a power down adjustment command.

Optionally, the processor is specifically configured to determine whether a power down TPC command is received in a preset time period of an adjustment cycle, where the preset time period is a fixed transmission time period of the TPC command in the second power control algorithm, a time length of the preset time period is an integer multiple of a time slot length, and if the preset time period is received, the power adjustment command is determined to be a power down adjustment command; if the received TPC commands are all power-up TPC commands in the preset time period, determining that the power adjustment commands are power-up adjustment commands, or determining whether power-down TPC command judgment results exist in TPC command judgment results of other power control algorithms except the second power control algorithm when the adjustment period is determined to be finished, and if so, determining that the power adjustment commands are power-down adjustment commands; if the judgment results of the TPC commands on the links adopting other power control algorithms are all power-up TPC commands, determining the power adjustment command as a power-up adjustment command; if the judgment results of the TPC commands on the links adopting other power control algorithms at least comprise one judgment result of the power keeping TPC command, determining the power adjustment command as a power rising adjustment command or determining the power adjustment command as a power keeping command according to the number of the power keeping TPC commands on all the links and the number of the power rising TPC commands.

Optionally, the processor is specifically configured to, if the power adjustment command is determined in the preset time period, adjust the transmission power according to the power adjustment command in a preset time slot after the preset time period is ended, or in a preset time slot after the adjustment period; and determining the power adjustment command when the adjustment period is finished, and adjusting the transmission power according to the power adjustment command in a preset time slot after the adjustment period is finished.

Optionally, the processor is specifically configured to determine whether a power down TPC command of the second power control algorithm is received in each time period in an adjustment cycle in sequence, where the time periods are not overlapped, and a sum of lengths of the time periods is the same as the adjustment cycle; upon receipt, determining that the power adjustment command is a power down adjustment command; if the received TPC commands of the second power control algorithm are all power-up TPC commands, determining whether a power-down TPC command judgment result exists in TPC command judgment results on links adopting other power control algorithms except the second power control algorithm when the adjustment period is finished; if the power adjustment command exists, determining that the power adjustment command is a power reduction adjustment command; if the judgment results of the TPC commands on the links adopting other power control algorithms are all power-up TPC commands, determining the power adjustment command as a power-up adjustment command; if the judgment results of the TPC commands on the links adopting other power control algorithms at least comprise one judgment result of the power keeping TPC command, determining the power adjustment command as a power rising adjustment command or determining the power adjustment command as a power keeping command according to the number of the power keeping TPC commands on all the links and the number of the power rising TPC commands.

Optionally, the processor is specifically configured to, if a power down TPC command is received in a time period within the adjustment period, adjust the transmission power according to the power down adjustment command in a preset time slot after the time period in which the power down TPC command is located is completed; or, in a preset time slot after the adjustment period, adjusting the transmission power according to the power down adjustment command; if the power adjustment command is determined at the end of the adjustment period, adjusting the transmission power according to the power down adjustment command at a preset time slot after the adjustment period.

Optionally, the processor is specifically configured to determine, when an adjustment period is completed, whether a TPC command of the second power control algorithm and a TPC command decision result of another power control algorithm have a power down TPC command, and if so, determine that the power adjustment command is a power down adjustment command; if the judgment results of the TPC command adopting the second power control algorithm and the TPC commands on the links adopting other power control algorithms are power-up TPC commands, determining the power adjustment command as a power-up adjustment command; if the TPC commands adopting the second power control algorithm are all power-up TPC commands, and the judgment results of the TPC commands on the links adopting other power control algorithms at least comprise one judgment result of the power-up TPC command, determining the power adjustment command as a power-up adjustment command or determining the power adjustment command as a power-up maintenance command according to the number of the power-up TPC commands and the number of the power-up TPC commands on all the links.

Optionally, the processor is specifically configured to adjust the transmission power according to the power adjustment command in a preset time slot after the adjustment period.

In the power adjustment method and device of the embodiment of the invention, the UE screens the TPC commands on each link in an adjustment period, when the TPC commands on each link received by the UE comprise the TPC commands of the second control algorithm, only one power adjustment command is determined corresponding to one adjustment period, and power adjustment is performed at most once in one adjustment period, so that the problem of too frequent power adjustment when the TPC commands on each link of the UE comprise the TPC commands of the second control algorithm is solved.

Drawings

FIG. 1 is a flow chart of a power adjustment method according to a first embodiment of the present invention;

FIG. 2 is a flowchart illustrating a second embodiment of a power adjustment method according to the present invention;

FIG. 3 is a flowchart illustrating a third embodiment of a power adjustment method according to the present invention;

FIG. 4 is a flowchart illustrating a fourth embodiment of a power adjustment method according to the present invention;

FIG. 5 is a flow chart of a fifth embodiment of a power adjustment method of the present invention;

FIG. 6 is a schematic structural diagram of a power adjustment apparatus according to a first embodiment of the present invention;

fig. 7 is a schematic structural diagram of a ue according to a first embodiment of the present invention.

Detailed Description

In a mobile communication network, a power control method is used to maintain stable reception quality of a received signal against the influence of channel fading.

The power control is divided into inner loop power control and outer loop power control, wherein the inner loop power control measures the reception quality of the channel, such as obtaining the reception SIR (Signal to Interference Rate)/SNR (Signal to Noise ratio)/SINR (Signal to Interference and Noise ratio) of the channel, and compares the measured reception quality of the channel with a set target value, generates a TPC command according to the comparison result, and instructs "raise transmission power" or "lower transmission power" through the TPC command, thereby making the reception quality of the channel reach the target value.

And the outer loop power control adjusts the target value according to the block error rate/bit error rate/symbol error rate of the channel, so that the block error rate/bit error rate/symbol error rate of the channel reaches a desired value.

A channel used by the UE to transmit data to the base station is called an uplink channel, and a channel used by the UE to receive data transmitted by the base station is called a downlink channel. According to the difference of the power control channels, the inner loop power control can be further divided into uplink inner loop power control and downlink inner loop power control, wherein the inner loop power control performed on the uplink channel is called uplink inner loop power control.

A TPC command used in the uplink inner loop power control is called uplink TPC, and the TPC command is generated according to the quality measurement of the uplink channel and transmitted on the downlink channel, and is used to instruct the UE to "raise the uplink transmission power" or "lower the uplink transmission power" or "maintain the uplink transmission power".

The uplink inner loop power control process generally includes: the base station measures the reception quality of the uplink DPCCH (Dedicated physical control Channel), and compares the measured value with a set target value to generate an uplink TPC command. The uplink TPC command is sent through a downlink DPCCH or a downlink F-DPCH (Fractional dedicated physical Channel) to instruct the UE to raise or lower the uplink DPCCH transmit power.

The uplink DPCCH comprises a pilot frequency domain, a TPC domain and other parts, wherein the pilot frequency in the pilot frequency domain is used for uplink channel estimation and measurement, and the TPC command in the TPC domain is downlink TPC. The downlink DPCCH comprises a pilot frequency domain, a TPC domain and other parts, wherein the pilot frequency in the pilot frequency domain is used for downlink channel estimation and measurement, and the TPC in the TPC domain is uplink TPC. The downlink F-DPCH only has a TPC domain, and TPC in the TPC domain is uplink TPC and is equivalent to a simplified channel of the downlink DPCCH.

The power control algorithm used in the uplink inner loop power control can be divided into a fast power control algorithm and a slow power control algorithm, wherein several slow power control algorithms which are commonly used include:

the first power control algorithm: and the base station sends an uplink TPC command in each time slot, and the UE receives the TPC command and performs hard judgment in each time slot. In a period (for example, in a time period with a length of M time slots), if the hard judgment results of the TPC commands continuously received by the UE are the same, the judgment result according to the uplink TPC command takes effect, for example, the judgment results of the TPC commands received by the UE in a period are both raising power, the transmission power of the UE is raised, and for example, the judgment results of the TPC commands received by the UE in an adjustment period are both lowering power, the transmission power of the UE is lowered; in one period, if the hard judgment results of a plurality of TPC commands continuously received by the UE are different, keeping the DPCCH transmission power unchanged.

The second power control algorithm: the base station sends an uplink TPC command in a period (for example, the time with the length of M time slots), namely, the uplink TPC command is sent only in one time slot in one period, the TPC commands are not sent in other time slots, the UE carries out hard judgment after receiving the uplink TPC and adjusts the power according to the result of the hard judgment, wherein the adjusted time can be within a preset time after the time slot receiving the TPC is finished or can be executed within the preset time after the current period is finished. In this way, the UE adjusts the uplink DPCCH transmit power every M slots.

The third power control algorithm: the base station sends TPC commands in each time slot of a period, wherein the TPC commands in the same period are all the same, the UE combines the TPC commands received in the period and carries out hard judgment, and the UE adjusts the sending power according to the result of the hard judgment.

The inner-loop power control algorithms are all directed to a single radio link, and when the UE is in the coverage area of multiple cells, multiple radio links may be simultaneously established with the multiple cells, for example, the UE maintains communication links with both the original cell and the new cell during soft handover, and only after stable communication is established in the new cell, the UE disconnects the connection with the original cell.

When the UE establishes multiple radio links simultaneously, the UE receives TPC commands sent on multiple links in one period, and if the UE adjusts power according to the TPC commands on each link, the following situations may occur: (1) the power adjustment results generated by a plurality of links are different, and as TPC commands for raising power and reducing power exist simultaneously, the UE has power adjustment contradiction; (2) the TPC commands using the first and third power control algorithms may be adjusted at least at the end of the current period, so that the UE may need to perform multiple power adjustments in one period, and particularly, when the TPC commands using the second power control algorithm are all using the second power control algorithm, the TPC commands using the second power control algorithm may fall in each slot in the same period, which may cause the UE to frequently adjust power and affect normal communication of the UE.

Therefore, when the UE establishes multiple links, how to reasonably process the TPC command on each link becomes a difficult problem in adjusting the UE power.

In order to solve the problem of processing the TPC command on each link of the UE, the embodiment of the present invention provides a method for screening and combining the TPC command on each link.

Considering that the first power control algorithm and the third power control algorithm both determine the adjustment result of the power in the last time slot of a cycle, and perform power adjustment within a preset time after the current cycle ends, therefore, when the TPC command on each link of the UE adopts the first power control algorithm and the third power control algorithm, or both the first power control algorithm and the third power control algorithm, the following method may be adopted to perform screening processing on the TPC command on each link, specifically:

(1) in the last time slot of a period, the UE respectively carries out hard judgment on the TPC command on each link according to the algorithm adopted by the TPC command on each link to obtain the intermediate quantity TPC _ temp of N uplink TPC commands, and then carries out the following processing on the N TPC _ temp:

a. when one power down TPC command exists in the N TPC _ temp, determining the command as power down;

b. and when the number of the power-up TPC commands in the _ N TPC _ temp is larger than that of the power-maintaining TPC commands, determining the power-up TPC commands as power-up, otherwise, determining the power-maintaining TPC commands as power-up. The specific calculation can be performed by adopting the following formula:

wherein when

When the temperature of the water is higher than the set temperature,

the power is determined to be up power, otherwise, the power is determined to be down power.

Since the effective time of the uplink TPC command of the first power control algorithm and the third power control algorithm is after the last slot of the current period when the UE is in the soft handover region, the UE can process the uplink TPC command in the above manner regardless of the configuration of the first power control algorithm or the third power control algorithm when the UE is in the soft handover region.

However, when the TPC command of at least one link in each link of the UE employs the second power control algorithm, since the TPC command of the second power control algorithm may take effect in the time slot after receiving the TPC command without waiting until the current cycle is completed, it can be seen that the effective time of the TPC command of the second power control algorithm is different from the first power control algorithm and the third power control algorithm, when the TPC command of at least one link in each link of the UE employs the second power control algorithm, the UE cannot process the TPC command on each link in the above manner, if the TPC command of the second power control algorithm is decided and executed separately on the basis of the above processing manner, since the TPC command employing the second power control algorithm may exist in each time slot of the current cycle, the UE may need to frequently adjust the transmission power in a plurality of time slots, not only increases the power consumption of the UE, but also may affect the normal communication traffic of the UE.

The embodiment of the invention provides a power adjustment method, when at least one TPC command on each link of UE adopts a second power control algorithm, the UE screens the TPC commands on each link, and the UE adjusts the power at most once in one period, thereby solving the problem that the UE may need to frequently adjust the transmission power when each link comprises the TPC command adopting the second power control algorithm.

Fig. 1 is a flowchart illustrating a power adjustment method according to a first embodiment of the present invention, where an execution main body of the method is a UE, and main processing steps include:

step S11: transmit power control, TPC, commands are received from at least two links, wherein the TPC commands on at least one link employ a second power control algorithm.

The UE receives TPC commands from each link, where the TPC command on at least one link uses a second power control algorithm, and the specific cases may be as follows:

(1) algorithm 2+ algorithm 2: a second power control algorithm is used for the TPC commands on each link of the UE.

(2) Algorithm 1+ algorithm 2: the power control algorithms employed by the TPC commands on each link of the UE include a first power control algorithm and a second power control algorithm.

(3) Algorithm 2+ algorithm 3: the power control algorithms employed by the TPC commands on each link of the UE include a second power control algorithm and a third power control algorithm.

(4) Algorithm 1+ algorithm 2+ algorithm 3: the power control algorithms employed by the TPC commands on each link of the UE include a first power control algorithm, a second power control algorithm, and a third power control algorithm.

(5) Algorithm 2 and a fourth power control algorithm, where the fourth power control algorithm may be a fast power control algorithm, for example, the base station sends an uplink TPC command in each time slot, the UE receives the TPC command and performs a hard decision in each time slot, and the UE adjusts the sending power according to the result of the hard decision in each time slot.

Step S12: and screening the TPC commands on each link in an adjusting period to obtain power adjusting commands.

No matter what combination of (1), (2), (3), (4) and (5) in step S11 is adopted by the TPC command on each link of the UE, the UE performs a screening process on the TPC command on each link within one adjustment period, and determines the power adjustment command corresponding to the current adjustment period.

The manner in which the UE filters the TPC commands on each link in one adjustment period may be determined according to actual requirements, for example, it may be determined whether a power down TPC command is received in one adjustment period, and if the power down TPC command is received, the power down TPC command may be determined without considering other TPC commands.

Step S13: and adjusting the transmission power according to the power adjustment command.

The UE adjusts the transmit power according to the determined power adjustment command, where the specific execution time may be determined according to a time slot in which the power adjustment command is located, for example, in a next time slot in which the power adjustment command is determined, or in a set time slot after the current adjustment period is finished.

In this embodiment, when the TPC command on each link received by the UE includes the TPC command of the second control algorithm, the UE performs screening processing on the TPC command on each link in one adjustment period, determines one power adjustment command corresponding to one adjustment period, and performs power adjustment at most once in one adjustment period, thereby solving the problem that power adjustment is too frequent when the TPC command on each link of the UE includes the TPC command of the second control algorithm.

Fig. 2 is a flowchart illustrating a second embodiment of a power adjustment method according to the present invention, wherein an execution subject of the method is a UE.

In this embodiment, a Radio Network Controller (RNC) presets transmission time of a TPC command of a second power control algorithm on each link of the UE, so that the UE can receive all TPC commands using the second power control algorithm within a preset time period of an adjustment period. The UE performs screening processing on the TPC commands on each link according to the TPC command of the second power control algorithm received in the preset time period and in combination with TPC commands of other algorithms, where the TPC commands of other algorithms include, but are not limited to, the first, second, third, and fourth power control algorithms, and the following will describe in detail specific processing steps of this embodiment, including:

step S21: and receiving TPC commands from at least two links, wherein the TPC commands on at least one link adopt a second power control algorithm.

In each link of the UE, at least one TPC command on one link employs the second power control algorithm, and the possible situation of the algorithm employed on each link of the UE is the same as that in the first embodiment, which is not described again in this step.

Step S22: determining whether a power down TPC command is received or not within a preset time period in an adjusting period, wherein the preset time period is a fixed sending time period of the TPC command of the second power control algorithm, and the time length of the preset time period is an integral multiple of the length of one time slot; if the step S23 is received, otherwise, the step S24 is executed.

The RNC presets a transmission period of the TPC command for each second power control algorithm. The UE determines a sending time period of the TPC command of the second power control algorithm in advance through the configuration information of each link, and receives each TPC command adopting the second power control algorithm in the preset time period. Wherein, the UE receives the TPC command adopting other power control algorithms at the same time of the TPC command of the second power control algorithm.

The specific preset time period may be the length of one time slot, or may be the length of multiple (e.g., two or three) time slots, which is not described herein.

The UE determines from the received TPC commands whether a down power TPC command is received, wherein the determining may include:

(1) and after the preset time period is finished, the UE judges whether each TPC command received from the preset time period is a power down TPC command one by one.

(2) And the UE judges whether the TPC command is a power down TPC command once every time the TPC command is received in the preset time period, and if the power down TPC command is received, the judgment on the TPC command received later is not carried out.

(3) In the above judging manner (1) or (2), the UE firstly judges whether the TPC command of the second power control algorithm is a down power TPC command, and if the TPC commands of the second power control algorithm are all up power, performs this judgment on the TPC commands using other power control algorithms.

Step S23: and receiving a power down TPC command in a preset time period in an adjusting period, and determining the power adjusting command as a power down adjusting command.

Step S24: in a preset time period, the received TPC commands are all power-up TPC commands, and the power adjustment command is determined to be a power-up adjustment command;

step S25: and adjusting the transmission power according to the power adjustment command.

In this step, the UE adjusts the transmission power according to the power adjustment command determined in step S23 or step S24.

Specifically, when the UE adjusts the transmission power, the adjusted time may be determined according to actual needs, for example, the time for power adjustment is determined with reference to a preset time period, specifically, the transmission power may be adjusted according to a power adjustment command in a preset time slot after the preset time period is ended, for example, the transmission power is adjusted in a next time slot after 512 chips are received after the preset time period is ended, where a result of the adjustment may be maintained until a next power adjustment command is executed.

In addition to setting the power adjustment time with reference to the preset time period, the UE may also adjust the period to determine the time for power adjustment with reference to the preset time slot, specifically, the UE may adjust the transmission power according to the power adjustment command at the preset time slot after the adjustment period, for example, adjust the transmission power at the start position of the next adjustment period after 512 chips are received after the adjustment period is completed, where the result of the adjustment may be maintained until the next power adjustment command is executed.

In this embodiment, the TPC commands each using the second power control algorithm are received within a preset time period, and the power adjustment command is determined by using all the TPC commands received within the preset time period, and it is not necessary to process the TPC commands in other time slots of the current period, so that the implementation manner is simple and convenient, and power adjustment is performed at most once within one adjustment period, which can effectively solve the problem of too frequent power adjustment when the TPC commands on each link of the UE include the TPC commands of the second control algorithm.

Fig. 3 is a flowchart illustrating a third embodiment of a power adjustment method according to the present invention, where an execution subject of the method is a UE.

In this embodiment, the RNC sets the transmission time of the TPC command of each second power control algorithm of the UE, so that the UE receives all the TPC commands using the second power control algorithm in the preset time period in the adjustment period, and thus the UE can process the TPC command on each link according to the TPC command of the second power control algorithm received in the time period and in combination with the TPC commands of other algorithms, and the specific processing steps of the embodiment will be described in detail below, including:

step S31: transmit power control, TPC, commands are received from at least two links, wherein the TPC commands on at least one link employ a second power control algorithm.

Step S32: and determining whether a power down TPC command is received within a preset time period in an adjustment cycle, wherein the preset time period is a fixed transmission time period of the TPC command of the second power control algorithm, and the time length of the preset time period is an integral multiple of a slot length, if yes, executing step S33, otherwise, executing step S34.

Step S33: receiving a power down TPC command for a preset time period within an adjustment period, determining that the power adjustment command is a power down adjustment command, and performing step S40.

In this step, the TPC commands received by the UE include not only TPC commands using the second power control algorithm but also TPC commands using other power control algorithms, such as the first, second, third, or fourth power control algorithms described above.

When the UE determines that the TPC command is received within the preset time period, the determining method is as described in embodiment two and is not described again.

Step S34: and in a preset time period, if the received TPC commands are all power-up TPC commands, determining whether a power-down TPC command judgment result exists in TPC command judgment results on links adopting other power control algorithms when the regulation period is finished, if so, executing step S35, otherwise, respectively executing step S36 or step S37 according to whether the TPC command judgment results include power-keeping TPC commands.

In this step, when the TPC commands received in the preset time period are all up-power TPC commands, it is not directly determined that the power adjustment command is up-power adjustment command, but when the adjustment period is finished, it is determined whether there is a down-power TPC command determination result in the TPC command determination results on the links using other power control algorithms.

Step S35: when the adjustment period is finished, judging results of the TPC commands on the links adopting other power control algorithms have judgment results of power reduction TPC commands, and determining the power adjustment command as a power reduction adjustment command.

For example, at the end of the adjustment period, if the result of the determination of the TPC command on one link using the first power control algorithm is power down, the power adjustment command is determined to be a power down adjustment command.

Step S36: when the adjusting period is finished, the judgment results of the TPC commands on the links adopting other power control algorithms are all power-up TPC commands, and the power adjusting commands are determined to be power-up adjusting commands.

Step S37: when the adjustment period is over, the TPC command decision results on the links adopting other power control algorithms at least include a power keeping TPC command decision result, and then it is determined whether the number of power up TPC commands in the TPC commands on all the links is greater than the number of power keeping TPC commands, if so, step S38 is executed, otherwise, step S39 is executed.

And finishing the adjustment period, and when the judgment result of the TPC command adopting other power control algorithms does not have the judgment result of the power down TPC command, not directly determining the power adjustment command as the power up adjustment command, but further determining whether the judgment result of the TPC command adopting other power control algorithms has the judgment result of the power maintenance TPC command.

When the TPC command decision results on the link adopting other power control algorithms include at least one power maintaining TPC command decision result, determining whether to raise the power or to maintain the power according to the number of full link raised power TPC commands and the number of maintaining power TPC commands, wherein the specific method for determining can be set according to actual requirements, for example, when the number of raising the power TPC commands is more than twice the number of maintaining power TPC commands, determining the power adjustment command as a raising power adjustment command, otherwise, determining the power adjustment command as a maintaining power adjustment command.

In this embodiment, it is specifically described that whether the number of up power TPC commands is greater than the number of held power TPC commands is taken as an example.

Step S38: and determining the power adjustment command as a power increase adjustment command when the number of the power increase TPC commands in the TPC commands on all the links is larger than that of the power keeping TPC commands.

Step S39: and determining the power adjustment command as a power keeping command if the number of the power increasing TPC commands in all the TPC commands on all the links is not more than the number of the power keeping TPC commands.

Specifically, when determining whether the number of TPC commands with increased power in the TPC commands on all links is greater than the number of TPC commands with maintained power, the following formula may be used to calculate:

judgment formula

Whether or not the above-mentioned conditions are satisfied,

and if so, the UE raises the transmission power, otherwise, the UE keeps the transmission power.

Alternatively, the first and second electrodes may be,

judgment of

Whether or not the above-mentioned conditions are satisfied,

In the above formula, N is the number of links of the UE, X is the number of links using the second control algorithm, and N-X is the number of links using the first control algorithm.

Step S40: and adjusting the transmission power according to the power adjustment command.

In this step, when the power down TPC command is received within the preset time period and the power adjustment command is determined to be the power down adjustment command, the manner of executing the power down adjustment command may include: in a preset time slot after the preset time period is over, reducing the transmission power according to the power down adjustment command, for example, adjusting the transmission power in the next time slot after 512 chips are received after the preset time period is over, wherein the adjustment result can be kept until the next time power adjustment command is executed; alternatively, the transmission power may be decreased according to the power down adjustment command at a predetermined time slot after the adjustment period, for example, the transmission power may be adjusted at the start position of the next adjustment period after 512 chips are received after the adjustment period is completed, wherein the adjustment result may be maintained until the next power adjustment command is executed.

In addition, the power adjustment command determined after the adjustment period is completed may be executed after a preset time period after the adjustment period.

In the power adjustment method of this embodiment, when the UE determines that the power adjustment command is the power down adjustment command within the preset time period, the UE may not determine the TPC command on another time slot any more, and only when all the TPC commands within the preset time period are not the power down commands, the UE determines the power adjustment command according to the TPC command determination result using another power control algorithm.

Fig. 4 is a flowchart illustrating a fourth embodiment of the power adjustment method according to the present invention, where the method does not limit the transmission time of the TPC command of the second power control algorithm, so that the TPC command on the link of the UE using the second power control algorithm can be randomly transmitted in each slot of the adjustment period, in this way, the method for adjusting power includes:

step S41: transmit power control, TPC, commands are received from at least two links, wherein the TPC commands on at least one link employ a second power control algorithm.

Step S42: determining whether a power down TPC command of a second power control algorithm is received or not in each time period in an adjusting period in sequence, wherein the time periods are not overlapped, the sum of the lengths of the time periods is the same as the adjusting period, and preferably, the length of each time period can be the length of one time slot; upon receipt, step S43 is executed, and step S44 is executed, with no receipt for each time period within the adjustment period.

Due to the randomness of the TPC command transmission of the second power control algorithm, the UE determines whether the power down TPC command of the second power control algorithm is received at each time period within the adjustment period.

Step S43: a power down TPC command of the second power control algorithm is received within a certain period of the adjustment period, the power adjustment command is determined to be a power down adjustment command, and step S50 is performed.

Once the UE receives the power down TPC command of the second power control algorithm within a certain time period of the adjustment period, it determines that the power adjustment command is a power down adjustment command, and does not need to decide the TPC command received later in the period.

Step S44: and if so, executing a step S45, otherwise, respectively executing steps S46 and S47 according to whether a power keeping TPC command judgment result exists in the TPC command judgment result.

Step S45: when the adjusting period is finished, a power down TPC command exists in a TPC command judgment result on a link adopting other power control algorithms, and the power adjusting command is determined to be a power down adjusting command.

Step S46: when the adjusting period is finished, the judgment results of the TPC commands on the links adopting other power control algorithms are all power-up TPC commands, and the power adjusting commands are determined to be power-up adjusting commands.

Step S47: when the adjustment period is over, the TPC command decision results on the links adopting other power control algorithms at least include a power keeping TPC command decision result, and it is determined whether the number of power up TPC commands in the TPC commands on all the links is greater than the number of power keeping TPC commands, if yes, step S48 is executed, otherwise, step S49 is executed.

In this embodiment, at the end of the adjustment period, if the TPC command decision result of other power algorithms does not have the power down TPC command decision result, and the remaining power TPC command decision result exists among the TPC command decision results of the other power algorithms, according to the number of the decision results of the TPC command with held power and the number of the decision results of the TPC command with raised power, it is determined whether the power adjustment command is a TPC command with raised power or a TPC command with lowered power, and the specific determination method can be as shown in this embodiment to determine whether the number of TPC command with raised power is greater than the number of TPC command with held power, and besides, according to whether the ratio of the number of TPC command with raised power to the number of TPC command with held power is greater than a set threshold, if so, the power adjustment command is determined to be an up power adjustment command, otherwise the power adjustment command is determined to be a down power adjustment command.

Step S48: and determining the power adjustment command as a power increase adjustment command when the number of the power increase TPC commands in the TPC commands on all the links is larger than that of the power keeping TPC commands.

Step S49: and determining the power adjustment command as a power keeping command when the number of the power increasing TPC commands in all the TPC commands on all the links is larger than that of the power keeping TPC commands.

Step S50: and adjusting the transmission power according to the power adjustment command.

In this step, when the power down TPC command of the second power control algorithm is received within a certain time period of the adjustment cycle, and the power adjustment command is determined to be the power down adjustment command, the manner of executing the power down adjustment command may include: reducing the transmission power according to the power down adjustment command in a preset time slot after the time slot is finished; or, in a preset time slot after the adjustment period, the transmission power is reduced according to the power down adjustment command.

In addition, the power adjustment command determined after the adjustment period is completed may be executed in a preset time slot after the adjustment period.

In the power adjustment method of this embodiment, the UE determines whether a power down TPC command of the second power control algorithm is received in each time period of the adjustment period, and when the power down TPC command of the second power control algorithm is received in a certain time period, the power adjustment command can be directly determined to be the power down adjustment command, and no judgment processing needs to be performed on other TPC commands.

Fig. 5 is a schematic flow chart of a fifth embodiment of the power adjustment method of the present invention, where the method receives only a TPC command in each time slot of an adjustment period, and performs a screening process on the received TPC command at the end of the adjustment period, and the method specifically includes:

step S51: receiving Transmission Power Control (TPC) commands from at least two links, wherein the TPC commands on at least one link adopt a second power control algorithm;

step S52: at the end of an adjustment period, determining whether a TPC command of the second power control algorithm and a TPC command decision result using another power control algorithm have a power down TPC command, if so, performing step S53, otherwise, determining to perform step S54 or S55, respectively, according to whether a TPC command exists.

Step S53: and determining that the power adjustment command is a power reduction adjustment command by adopting the TPC command of the second power control algorithm and the TPC command judgment result on the link adopting other power control algorithms.

Step S54: and judging results of the TPC command adopting the second power control algorithm and the TPC commands on the links adopting other power control algorithms are power-up TPC commands, and determining the power adjustment command as a power-up adjustment command.

Step S55: the TPC commands adopting the second power control algorithm are all power-up TPC commands, the judgment results of the TPC commands on the links adopting other power control algorithms at least comprise a power-maintaining TPC command judgment result, whether the number of the power-up TPC commands in the TPC commands on all the links is larger than the number of the power-maintaining TPC commands is determined, if yes, the step S56 is executed, otherwise, the step S57 is executed;

step S56: the power adjustment command is determined to be a power up adjustment command.

Step S57: the power adjustment command is determined to be a power hold command.

Step S58: and adjusting the transmission power according to the power adjustment command in a preset time slot after the adjustment period.

For example, the transmit power is adjusted at the beginning of the next adjustment period 512 chips after the adjustment period ends, where the result of the adjustment may be maintained until the next power adjustment command is executed.

Fig. 6 is a schematic structural diagram illustrating a first power adjustment apparatus according to an embodiment of the present invention, where the apparatus is disposed in a UE device, and specifically includes: a receiver 61 and a processor 62, wherein the receiver 61 is configured to receive TPC commands from at least two links, and the TPC commands on at least one link use a second power control algorithm; a processor 62, configured to perform screening processing on the TPC commands on each link in an adjustment period to obtain power adjustment commands; and adjusting the transmission power according to the power adjustment command.

In the above embodiment, the processor 62 is specifically configured to determine whether a power down TPC command is received within an adjustment period; if a power down TPC command is received, the power adjustment command is determined to be a power down adjustment command.

In the foregoing embodiment, the processor 62 is specifically configured to determine whether a power down TPC command is received in a preset time period of an adjustment cycle, where the preset time period is a fixed transmission time period of the TPC command in the second power control algorithm, and a time length of the preset time period is an integer multiple of a time slot length, and if the preset time period is received, the power down TPC command is determined; if the received TPC commands are all power-up TPC commands in a preset time period, determining that the power adjustment commands are power-up adjustment commands, or determining whether power-down TPC command judgment results exist in TPC command judgment results of other power control algorithms except the second power control algorithm when determining that the adjustment period is finished, and if so, determining that the power adjustment commands are power-down adjustment commands; if the judgment results of the TPC commands on the links adopting other power control algorithms are all power-up TPC commands, determining the power adjustment command as a power-up adjustment command; if the judgment results of the TPC commands on the links adopting other power control algorithms at least comprise one judgment result of the power keeping TPC command, determining the power adjustment command as a power rising adjustment command or determining the power adjustment command as the power keeping command according to the number of the power keeping TPC commands on all the links and the number of the power rising TPC commands.

In the above embodiment, the processor 62 is specifically configured to, if the power adjustment command is determined in the preset time period, adjust the transmission power in the preset time slot after the preset time period is ended, or in the preset time slot after the adjustment period, according to the power adjustment command; and determining a power adjustment command at the end of the adjustment period, and adjusting the transmission power according to the power adjustment command at a preset time slot after the end of the adjustment period.

In the foregoing embodiment, the processor 62 is specifically configured to determine whether a power down TPC command of the second power control algorithm is received in each time period in an adjustment cycle in sequence, where the time periods are not overlapped, and a sum of lengths of the time periods is the same as the adjustment cycle; upon receipt, determining the power adjustment command to be a power down adjustment command; if the received TPC commands of the second power control algorithm are all power-up TPC commands, determining whether a judgment result of a power-down TPC command exists in the judgment results of the TPC commands on the links adopting other power control algorithms except the second power control algorithm when the regulation period is finished; if the power adjustment command exists, determining the power adjustment command as a power reduction adjustment command; if the judgment results of the TPC commands on the links adopting other power control algorithms are all power-up TPC commands, determining the power adjustment command as a power-up adjustment command; if the judgment results of the TPC commands on the links adopting other power control algorithms at least comprise one judgment result of the power keeping TPC command, determining the power adjustment command as a power rising adjustment command or determining the power adjustment command as the power keeping command according to the number of the power keeping TPC commands on all the links and the number of the power rising TPC commands.

In the above embodiment, the processor 62 is specifically configured to, if the power down TPC command is received in a time period within the adjustment period, adjust the transmission power according to the power down adjustment command in a preset time slot after the time period in which the power down TPC command is located is ended; or, in a preset time slot after the adjustment period, adjusting the transmission power according to the power down adjustment command; if the power adjustment command is determined at the end of the adjustment period, the transmission power is adjusted according to the power down adjustment command at a preset time slot after the adjustment period.

In the foregoing embodiment, the processor 62 is specifically configured to determine, when one adjustment cycle is completed, whether a TPC command of the second power control algorithm and a TPC command decision result of another power control algorithm have a power down TPC command, and if so, determine that the power adjustment command is a power down adjustment command; if the judgment results of the TPC command adopting the second power control algorithm and the TPC commands on the links adopting other power control algorithms are power-up TPC commands, determining the power adjustment command as a power-up adjustment command; if the TPC commands adopting the second power control algorithm are all power-up TPC commands, and the judgment results of the TPC commands on the links adopting other power control algorithms at least comprise one judgment result of the power-maintaining TPC command, determining the power adjustment command as a power-up adjustment command or determining the power adjustment command as a power-maintaining command according to the number of the power-maintaining TPC commands on all the links and the number of the power-up TPC commands.

The processor 62 is specifically configured to adjust the transmission power according to the power adjustment command in a preset time slot after the adjustment period.

Fig. 7 is a schematic structural diagram of a first embodiment of the user equipment of the present invention, where the user equipment 1400 includes a communication interface 1401, a memory 1403, and a processor 1402, where the communication interface 1401, the processor 1402, and the memory 1403 are connected to each other through a bus 1404; the bus 1404 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 7, but this is not intended to represent only one bus or type of bus.

The communication interface 1401 is used for communication with a transmitting end. A memory 1403 for storing the program. In particular, the program may include program code including computer operating instructions. The memory 1403 may include a Random Access Memory (RAM) and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

The processor 1402 executes the program stored in the memory 1403 to implement the method of the foregoing method embodiment of the present invention:

the method comprises the following steps:

receiving Transmission Power Control (TPC) commands from at least two links, wherein the TPC commands on at least one link adopt a second power control algorithm;

and adjusting the transmission power according to the power adjustment command.

The Processor 1402 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components.

The power adjustment device and the method implemented by the user equipment in the embodiments of the present invention have the same functions as the power adjustment method described above, and are not described again.

In the UE of this embodiment, when the TPC command received by the UE on each link includes a TPC command using the second control algorithm, the UE performs screening processing on the TPC command on each link in an adjustment period, determines a power adjustment command corresponding to the adjustment period, and performs power adjustment at most once in the adjustment period, thereby solving the problem that power adjustment is too frequent when the TPC command on each link of the UE includes the TPC command using the second control algorithm.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method of power adjustment, comprising:

receiving Transmission Power Control (TPC) commands from at least two links, wherein the TPC commands on at least one link adopt a second power control algorithm, the TPC commands on at least one link adopt another power control algorithm, the second power control algorithm is different from the another power control algorithm, only one TPC command is transmitted and executed in one time slot in each period of the link adopting the second power control algorithm, and the TPC commands are not transmitted in other time slots;

adjusting the transmission power according to the power adjustment command;

the screening processing of the TPC commands on each link in one adjustment period to obtain the power adjustment command includes:

2. The method of claim 1, wherein determining whether a power down TPC command is received within an adjustment period comprises:

3. The method of claim 2, wherein the adjusting the transmit power according to the power adjustment command comprises:

4. The method of claim 1, wherein determining whether a power down TPC command is received within an adjustment period comprises:

5. The method of claim 4, wherein the adjusting the transmission power according to the power adjustment command comprises:

6. The method of claim 1, wherein determining whether a power down TPC command is received within an adjustment period comprises:

7. The method of claim 6, wherein the adjusting the transmission power according to the power adjustment command comprises:

8. A power regulation device, comprising:

a receiver, configured to receive TPC commands from at least two links, where the TPC commands on at least one link use a second power control algorithm, and the TPC commands on at least one link use another power control algorithm, where the second power control algorithm is different from the another power control algorithm, and where the link using the second power control algorithm only transmits and executes one TPC command in one slot per cycle, and other slots do not transmit TPC commands;

the processor is used for screening the TPC commands on each link in an adjusting period to obtain power adjusting commands; adjusting the transmission power according to the power adjustment command;

the processor is specifically configured to determine whether a power down TPC command is received within an adjustment period; and if the power down TPC command is received, determining that the power adjustment command is a power down adjustment command.

9. The apparatus of claim 8, wherein the processor is specifically configured to determine whether a power down TPC command is received within a preset time period of an adjustment cycle, wherein the preset time period is a fixed transmission time period of the TPC command of the second power control algorithm, and a time length of the preset time period is an integer multiple of a time slot length, and if received, determine that the power adjustment command is a power down adjustment command; if the received TPC commands are all power-up TPC commands in the preset time period, determining that the power adjustment commands are power-up adjustment commands, or determining whether power-down TPC command judgment results exist in TPC command judgment results of other power control algorithms except the second power control algorithm when the adjustment period is determined to be finished, and if so, determining that the power adjustment commands are power-down adjustment commands; if the judgment results of the TPC commands on the links adopting other power control algorithms are all power-up TPC commands, determining the power adjustment command as a power-up adjustment command; if the judgment results of the TPC commands on the links adopting other power control algorithms at least comprise one judgment result of the power keeping TPC command, determining the power adjustment command as a power rising adjustment command or determining the power adjustment command as a power keeping command according to the number of the power keeping TPC commands on all the links and the number of the power rising TPC commands.

10. The apparatus of claim 9, wherein the processor is specifically configured to adjust the transmission power according to the power adjustment command at a preset time slot after the preset time period ends or at a preset time slot after the adjustment period if the power adjustment command is determined at the preset time period; and determining the power adjustment command when the adjustment period is finished, and adjusting the transmission power according to the power adjustment command in a preset time slot after the adjustment period is finished.

11. The apparatus of claim 8, wherein the processor is specifically configured to determine whether the TPC command for power down of the second power control algorithm is received sequentially at each time slot within an adjustment period, wherein the time slots do not overlap each other, and a sum of lengths of the time slots is the same as the adjustment period; upon receipt, determining that the power adjustment command is a power down adjustment command; if the received TPC commands of the second power control algorithm are all power-up TPC commands, determining whether a power-down TPC command judgment result exists in TPC command judgment results on links adopting other power control algorithms except the second power control algorithm when the adjustment period is finished; if the power adjustment command exists, determining that the power adjustment command is a power reduction adjustment command; if the judgment results of the TPC commands on the links adopting other power control algorithms are all power-up TPC commands, determining the power adjustment command as a power-up adjustment command; if the judgment results of the TPC commands on the links adopting other power control algorithms at least comprise one judgment result of the power keeping TPC command, determining the power adjustment command as a power rising adjustment command or determining the power adjustment command as a power keeping command according to the number of the power keeping TPC commands on all the links and the number of the power rising TPC commands.

12. The apparatus of claim 11, wherein the processor is specifically configured to, if a power down TPC command is received within a time period of the adjustment period, adjust the transmit power according to the power down adjustment command at a preset time slot after the time period of the power down TPC command is over; or, in a preset time slot after the adjustment period, adjusting the transmission power according to the power down adjustment command; if the power adjustment command is determined at the end of the adjustment period, adjusting the transmission power according to the power down adjustment command at a preset time slot after the adjustment period.

13. The apparatus of claim 8, wherein the processor is specifically configured to determine, at the end of an adjustment period, whether a power down TPC command exists in the TPC command of the second power control algorithm and the TPC command decision result of the other power control algorithm, and if so, determine that the power adjustment command is a power down adjustment command; if the judgment results of the TPC command adopting the second power control algorithm and the TPC commands on the links adopting other power control algorithms are power-up TPC commands, determining the power adjustment command as a power-up adjustment command; if the TPC commands adopting the second power control algorithm are all power-up TPC commands, and the judgment results of the TPC commands on the links adopting other power control algorithms at least comprise one judgment result of the power-up TPC command, determining the power adjustment command as a power-up adjustment command or determining the power adjustment command as a power-up maintenance command according to the number of the power-up TPC commands and the number of the power-up TPC commands on all the links.

14. The apparatus of claim 13, wherein the processor is configured to adjust the transmit power according to the power adjustment command at a predetermined time slot after the adjustment period.