CN108882355B

CN108882355B - Uplink power synchronization method, access network equipment and terminal

Info

Publication number: CN108882355B
Application number: CN201810363372.9A
Authority: CN
Inventors: 胡文权; 焦淑蓉; 花梦
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-12-17
Filing date: 2014-05-09
Publication date: 2021-06-01
Anticipated expiration: 2034-05-09
Also published as: CN108882355A; CN104717738A; CN104717738B

Abstract

The embodiment of the invention discloses an uplink power synchronization method, access network equipment and a terminal, which are used for feeding back power control adjustment information more accurately, shortening power control adjustment convergence time and saving transmission time resources. The method provided by the embodiment of the invention comprises the following steps: the access network equipment determines a preset value and a measured value of a signal sent by the terminal on the current uplink carrier, acquires a power adjustment parameter according to the preset value and the measured value, and the power adjustment parameter can adjust the transmitting power in a variable step length and feed back the power adjustment parameter to the terminal.

Description

Uplink power synchronization method, access network equipment and terminal

Technical Field

The embodiment of the invention relates to the field of data communication, in particular to an uplink power synchronization method, access network equipment and a terminal.

Background

The HSUPA high speed up link packet access technology is an up high speed packet service access technology based on WCDMA wideband code division multiple access technology. In the research of 3GPP R12 release, it is proposed to change an uplink secondary carrier to an uplink secondary carrier dedicated to support high-rate transmission based on an uplink dual-carrier configuration, and in order to reduce the delay and signaling overhead of secondary carrier activation, the secondary carrier needs to be kept in an activated state all the time. Meanwhile, in order to reduce the interference between UE user equipment, a TDM time division multiplexing scheduling mode is adopted for uplink, only one UE or a small number of UEs are allowed to carry out uplink transmission in one TTI transmission time interval, the UE which is not scheduled for uplink data transmission does not send a physical control channel special for a control channel DPCCH, and DPCCH information is sent only when E-DCH enhanced dedicated channel data is sent on an uplink auxiliary carrier, so that the mutual interference between the UEs is reduced. This creates a problem to be solved: when a certain UE is scheduled to transmit uplink data, because a pre/post amble/postamble of a DPCCH channel is not transmitted, a quick power synchronization method is needed to ensure that the UE obtains uplink power synchronization in a short time and meet the requirement of receiving the signal-to-interference-and-noise ratio of an uplink receiving signal.

At present, generally, when UE does not send E-DCH data, the DPCCH channel is not sent, when UE sends data, the sending power of the initial DPCCH is adjusted according to the interval time between two times of dispatching of the UE, and the access network equipment feeds back a sending power adjustment command to enable the UE to add an interval offset with a fixed step length on the basis of the sending power of the previous DPCCH for adjustment.

However, in practical applications, the feedback Transmit Power adjustment command of the access network device causes the UE to use the Transmit Power of the DPCCH channel scheduled at the previous time plus a bias of a fixed step size, which cannot accurately estimate the required Transmit Power, but only roughly perform initial Power estimation and cannot feed back to the UE accurate Power Control adjustment information, and the UE still needs to perform adjustment by receiving TPC (Transmit Power Control) information fed back by the Node B (3G mobile base station), so that the UE needs to reach the expected received signal to interference plus noise ratio (sinr) after a long Power Control adjustment convergence time.

Disclosure of Invention

The embodiment of the invention provides an uplink power synchronization method, access network equipment and a terminal, which are used for feeding back power control adjustment information more accurately, shortening power control adjustment convergence time and saving transmission time resources.

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

the terminal determines the last transmission power, the last transmission power adjustment command, the current transmission power adjustment command and the last transmission power adjustment step length, wherein the last transmission power is the transmission power of a last signal transmitted on an uplink carrier, the last transmission power adjustment command is used for indicating the transmission power adjustment increase and decrease instruction of the last signal transmitted, the current transmission power adjustment command is used for indicating the transmission power adjustment increase and decrease instruction of the current signal transmitted, and the last transmission power adjustment step length is used for indicating the step length for adjusting the transmission power of the last signal transmitted;

the terminal judges whether the current sending power adjustment command is the same as the last sending power adjustment command;

if not, the terminal obtains the current transmission power adjustment step length according to the last transmission power adjustment step length;

and the terminal updates the last sending power according to the obtained current sending power adjustment step length so as to obtain the current sending power.

In a first possible implementation manner of the first aspect, the initial transmission power adjustment step size is preset by the terminal.

In a second possible implementation manner of the first aspect, the initial transmission power adjustment step size is obtained by the terminal according to a parameter issued by an access network device.

In a third possible implementation manner of the first aspect, the method includes:

and taking the (N + 1) th step value in a preset adjustment step sequence as the current transmission power adjustment step, wherein the nth step value in the adjustment step sequence is the last transmission power adjustment step, and the (N + 1) th step value is less than or equal to the nth step value.

In a fourth possible implementation manner of the first aspect, the method includes:

and taking the transmission power adjustment step value corresponding to half of the last transmission power adjustment step as the current transmission power adjustment step.

In a fifth possible implementation manner of the first aspect, the method includes:

and taking the corresponding transmission power adjustment step value obtained by subtracting a preset difference value from the last transmission power adjustment step as the current transmission power adjustment step.

In a sixth possible implementation form of the first aspect,

the method further comprises the following steps:

and if the current sending power adjustment command is the same as the sending power adjustment command of the last sending signal, the terminal determines the last sending power adjustment step length as the current sending power adjustment step length.

In a seventh possible implementation manner of the first aspect, the method further includes:

and if the current transmission power adjustment step length is smaller than or equal to a preset value, the terminal determines that the current transmission power adjustment step length is a fixed adjustment step length.

In an eighth possible implementation manner of the first aspect, the method further includes:

and if the terminal judges that the duration length of the signal transmitted on the current uplink carrier reaches a preset threshold, the terminal determines that the current transmission power adjustment step length is a fixed adjustment step length.

In a second aspect, an embodiment of the present invention provides a terminal, including:

a determining module, configured to determine a last transmission power, a last transmission power adjustment command, a current transmission power adjustment command, and a last transmission power adjustment step size, where the last transmission power is a transmission power of a last signal transmitted on an uplink carrier, the last transmission power adjustment command is used to indicate a transmission power adjustment increase/decrease instruction of a last signal transmitted, the current transmission power adjustment command is used to indicate a transmission power adjustment increase/decrease instruction of a current signal transmitted, and the last transmission power adjustment step size is used to indicate a step size for adjusting the transmission power of the last signal transmitted;

a first judging module, configured to judge whether the current transmit power adjustment command determined by the determining module is the same as the last transmit power adjustment command;

the first step length determining module is used for acquiring the current transmission power adjustment step length according to the last transmission power adjustment step length when the first judging module judges that the current transmission power adjustment command is different from the transmission power adjustment command of the last transmission signal;

and the updating module is used for updating the last sending power determined by the determining module according to the current sending power adjustment step length determined by the first step length determining module so as to obtain the current sending power.

In a first possible implementation manner of the second aspect, the terminal further includes:

a second judging module, configured to judge whether the current transmit power adjustment command determined by the determining module is a first transmit power adjustment command received by the terminal in the period;

a second step length determining module, configured to determine, when the second determining module determines that the current transmit power adjustment command is the first transmit power adjustment command received by the terminal in the current period, that the current transmit power adjustment step length is preset by the terminal or obtained according to a network-side issued parameter;

a negative triggering module, configured to trigger the first determining module when the second determining module determines that the current transmit power adjustment command is not the first transmit power adjustment command received by the terminal in the current period;

and a third step length determining module, configured to determine the last transmission power adjustment step length as the current transmission power adjustment step length when the first determining module determines that the current transmission power adjustment command is the same as the transmission power adjustment command of the last transmission signal.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner, the terminal further includes:

a fixed step length determining module, configured to determine that the current transmit power adjustment step length is a fixed adjustment step length when the current transmit power adjustment step length determined by the first step length determining module is smaller than or equal to a preset value;

a fixed updating module, configured to update the current transmission power according to the fixed adjustment step determined by the fixed step determining module; or

A fixed step length determining module, configured to determine that a current transmit power adjustment step length is a fixed adjustment step length when a duration of transmitting a signal on a current uplink carrier reaches a preset number;

and the fixed updating module is used for updating the current sending power according to the fixed adjustment step length determined by the fixed step length determining module.

According to the technical scheme, the embodiment of the invention has the following advantages: in the embodiment of the invention, the access network equipment acquires the power adjustment parameter indicating the change of the adjustment step length according to the measured value and the preset value of the signal sent by the terminal on the current uplink carrier wave, and the adjustment step length for updating the sending power is adjusted in real time according to the current sending power and the preset value, so that the access network equipment can more accurately calculate the power deviation between the sending power of the terminal and the receiving power of the access network equipment and more accurately feed back the power control adjustment information to the terminal, thereby enabling the terminal to more quickly converge to the target sending power, shortening the convergence time of power control adjustment and saving the transmission time resource.

Drawings

Fig. 1 is a flowchart illustrating an uplink power synchronization method according to an embodiment of the present invention;

fig. 2 is another flowchart illustrating an uplink power synchronization method according to an embodiment of the present invention;

fig. 3 is another flowchart illustrating an uplink power synchronization method according to an embodiment of the present invention;

fig. 4 is another flowchart illustrating an uplink power synchronization method according to an embodiment of the present invention;

fig. 5 is another flowchart illustrating an uplink power synchronization method according to an embodiment of the present invention;

fig. 6 is another flowchart illustrating an uplink power synchronization method according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of an access network device in an embodiment of the present invention;

fig. 8 is a schematic structural diagram of an access network device in the embodiment of the present invention;

fig. 9 is a schematic structural diagram of an access network device in the embodiment of the present invention;

fig. 10 is a schematic structural diagram of an access network device in an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 14 is another schematic structural diagram of a terminal according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The adjustment step length for updating the transmission power of the transmission signal in the uplink power synchronization method is a variable step length that can be adjusted in real time according to actual requirements, and can be processed on the side of the access network device or the side of the terminal.

Firstly, processing is carried out at the access network equipment side.

Referring to fig. 1, an embodiment of an uplink power synchronization method according to the embodiment of the present invention includes:

101. the access network equipment determines a preset value and a measured value of a signal sent by a terminal on a current uplink carrier;

after the access network equipment receives a sending signal sent by the terminal, the access network equipment determines a preset value and a measured value of the sending signal of the terminal on the current uplink carrier.

102. The access network equipment acquires power adjustment parameters according to the measured values and preset values;

after the access network equipment determines the preset value and the measured value, the access network equipment acquires a power adjustment parameter according to the measured value and the preset value, wherein the power adjustment parameter is used for indicating the change of an adjustment step length, and the user terminal with the adjustment step length updates the transmission power of the transmission signal.

103. And the access network equipment feeds back the power adjustment parameter to the terminal.

After the access network device obtains the power adjustment parameter, the power adjustment parameter is fed back to the terminal, and the terminal can update the sending power of the sending signal according to the power adjustment parameter.

In the embodiment of the invention, the access network equipment acquires the power adjustment parameter indicating the change of the adjustment step length according to the measured value and the preset value of the signal sent by the terminal on the current uplink carrier wave, and the adjustment step length for updating the sending power is adjusted in real time according to the current sending power and the preset value, so that the access network equipment can more accurately calculate the power deviation between the sending power of the terminal and the receiving power of the access network equipment and more accurately feed back the power control adjustment information to the terminal, thereby enabling the terminal to more quickly converge to the target sending power, shortening the convergence time of power control adjustment and saving the transmission time resource.

In the above embodiment, the access network device obtains the power adjustment parameter according to the measured value and the preset value, and in practical application, the access network device may determine a difference between a dB of the predicted value and a dB of the measured value as the power adjustment parameter, and the uplink power synchronization method in the embodiment of the present invention is described below with reference to fig. 2, where another embodiment of the uplink power synchronization method in the embodiment of the present invention includes:

201. the access network equipment determines a preset value and a measured value of a signal sent by a terminal on a current uplink carrier;

If the preset value is the target SINR sent by the radio network controller RNC to the access network device, the measured value may be the signal to interference plus noise ratio SINR of the sent signal received by the access network device; if the preset value is a target received signal power value set by the access network device, the measured value may be a received signal power of a transmitted signal received by the access network device.

202. The access network equipment determines the difference value of dB of a preset value and dB of a measured value as a power adjustment parameter;

after the access network equipment determines the preset value and the measured value, the difference value between the dB of the preset value and the dB of the measured value is determined as a power adjustment parameter, the power adjustment parameter is used for representing the change of an adjustment step length, and the user terminal of the adjustment step length updates the transmission power of the transmission signal.

The access network device may also add the loss value to the difference between the dB of the preset value and the dB of the measured value as a power adjustment parameter, and may further perform another calculation on the preset value and the measured value to obtain the power adjustment parameter, which is not limited herein.

203. And the access network equipment feeds back the power adjustment parameter to the terminal.

In the embodiment of the invention, the access network equipment determines the difference value between the dB of the preset value and the dB of the measured value as the power adjustment parameter, so that the power adjustment parameter can more accurately represent the adjustment quantity required by the transmitting power, and the transmitting power can more quickly converge to the target transmitting power.

The steps 201 to 203 may be performed in a loop, or the loop may be stopped after a preset condition is met, which is not limited herein.

In the above embodiment, the access network device feeds back the power adjustment parameter to the terminal, in practical application, the access network device may feed back the power adjustment parameter to the terminal according to a first frame format capable of carrying the power adjustment parameter, and when a preset condition is satisfied, may stop feeding back the power adjustment parameter to the terminal according to the first frame format, and may feed back the power adjustment command to the terminal according to a second frame format, where the uplink power synchronization method in the embodiment of the present invention is described in detail below, with reference to fig. 3, another embodiment of the uplink power synchronization method in the embodiment of the present invention includes:

301. the access network equipment determines a preset value and a measured value of a signal sent by a terminal on a current uplink carrier;

302. The access network equipment determines the difference value of dB of a preset value and dB of a measured value as a power adjustment parameter;

303. The access network equipment feeds back the power adjustment parameter to the terminal according to the first frame format;

after the access network equipment acquires the power adjustment parameter, feeding back the power adjustment parameter to the terminal according to a first frame format, wherein the first frame format can be used for bearing the power adjustment parameter;

it should be noted that, the access network device feeds back the power adjustment parameter to the terminal according to the first frame format, and may generally convert the power adjustment parameter into a quantization bit indication value in the first frame format and feed back the quantization bit indication value to the terminal.

The first frame format may be an E-F-DPCH frame format obtained by modifying an existing F-DPCH channel frame format, for example, by extending the F-DPCH frame format to achieve an effect of one TPC command indicating to adjust multiple step sizes, where data of the existing F-DPCH frame format is as shown in table 1 below:

TABLE 1

If the TPC bit field is extended to carry 5-bit TPC information, the data in frame format is as shown in table 2 below:

TABLE 2

In this way, each slot of the enhanced E-F-DPCH channel frame format may indicate 32 quantization step sizes, or the first frame format capable of carrying the power adjustment parameter may be redesigned, which is not limited herein.

304. The access network equipment judges whether preset conditions are met, if the preset conditions are met, the step 305 is executed, and if the preset conditions are not met, the step 301 is executed;

after the access network equipment feeds back the power adjustment parameter to the terminal according to the first frame format, whether the preset condition is met can be judged.

If the preset condition is satisfied, executing step 305;

if the preset condition is not satisfied, step 301 is executed.

In practical application, there are various ways to determine whether the preset condition is met, and the access network device may determine whether the number of frames in the first frame format fed back reaches a preset number, and if the preset number is reached, determine that the preset condition is met, or the access network device may determine whether the duration length of the signal sent by the terminal on the current uplink carrier reaches a preset threshold, and if the duration length reaches the preset threshold, determine that the preset condition is met, or the access network device may also determine whether the power adjustment parameter is smaller than a preset value, and if the duration length is smaller than the preset value, determine that the preset condition is met, where no limitation is made here.

305. The access network equipment stops feeding back the power adjustment parameter to the terminal according to the first frame format;

and when the access network equipment judges that the preset condition is met, stopping feeding back the power adjustment parameter to the terminal according to the first frame format.

It can be understood that, if the value of the current power adjustment parameter is greater than the maximum value that can be fed back by the first frame format, the access network device feeds back the maximum value.

306. And the access network equipment feeds back the transmission power adjustment command of the transmission signal to the terminal by using the second frame format.

And after the access network equipment stops feeding back the power adjustment parameters to the terminal according to the first frame format, feeding back a transmission power adjustment command of the transmission signal to the terminal by using the second frame format.

The second frame format may be a frame format that can feed back a transmission power adjustment command that exists at present, or may be reset, and is not limited herein.

In the embodiment of the invention, the access network equipment feeds back the power adjustment parameter according to the first frame format which can bear the power adjustment parameter, when the preset condition is met, the power adjustment parameter feeding back according to the first frame format is stopped, and the power adjustment command is fed back to the terminal according to the second frame format, so that the transmission rate of the power adjustment parameter can be enhanced, the power synchronization process is accelerated, and the power adjustment command is fed back according to the second frame format after the preset condition is met, thereby saving system resources.

For convenience of understanding, the uplink power synchronization method in the embodiment of the present invention is specifically described in a specific application scenario as follows:

after receiving a sending signal sent by a terminal on a current uplink carrier wave, an access network device determines that a set dB value of a target receiving signal power value is 30 and a dB value of a receiving signal power of the sending signal is 2;

the access network equipment determines the difference value +28 between the dB value 30 of the target received signal power value and the dB value 2 of the received signal power as a power adjustment parameter;

the access network equipment feeds the power adjustment parameter back to the terminal according to the frame format of the E-F-DPCH, if the frame format of the current E-F-DPCH can be adjusted by 16dB at most in one slot, the access network equipment takes the +16 as the power adjustment parameter, converts the power adjustment parameter into a quantization bit indicated value and feeds the quantization bit indicated value back to the terminal;

the access network equipment judges that the current power adjustment parameter 16 is more than 2;

after receiving a sending signal sent by a terminal on a current uplink carrier wave, the access network equipment determines that the set dB value of the target receiving signal power value is 30 and the dB value of the receiving signal power of the sending signal is 18;

the access network equipment determines the difference value +12 between the dB value 30 of the target received signal power value and the dB value 18 of the received signal power as a power adjustment parameter;

the access network equipment feeds the power adjustment parameter back to the terminal according to the E-F-DPCH frame format, the maximum adjustment of the current E-F-DPCH frame format within a slot is that 16dB is larger than +12, the access network equipment takes the +12 as the power adjustment parameter, converts the power adjustment parameter into a quantization bit indicated value and feeds the quantization bit indicated value back to the terminal;

after receiving a sending signal sent by a terminal on a current uplink carrier, an access network device determines that a set dB value of a target receiving signal power value is 30 and a dB value of a receiving signal power of the sending signal is 30;

the access network equipment determines the difference value 0 between the dB value 30 of the target received signal power value and the dB value 18 of the received signal power as a power adjustment parameter;

the access network equipment feeds the power adjustment parameter back to the terminal according to the frame format of the E-F-DPCH, the maximum adjustment of the current frame format of the E-F-DPCH within one slot is that 16dB is greater than 0, and the access network equipment feeds the power adjustment parameter back to the terminal by taking 0 as the power adjustment parameter;

the access network equipment judges that the current power adjustment parameter 0 is less than 2 and meets the condition;

the access network equipment stops feeding back power adjustment parameters to the terminal according to the E-F-DPCH;

and the access network equipment feeds back a transmission power adjustment command of the power transmission signal to the terminal according to the existing F-DPCH frame format.

And secondly, processing is carried out on the terminal side.

Referring to fig. 4, another embodiment of the uplink power synchronization method according to the embodiment of the present invention includes:

401. the terminal determines the last transmission power, the last transmission power adjustment command, the current transmission power adjustment command and the last transmission power adjustment step length, wherein the last transmission power is the transmission power of the last signal transmitted on the uplink carrier, the last transmission power adjustment command is used for indicating the transmission power adjustment increase and decrease instruction of the last signal transmitted, the current transmission power adjustment command is used for indicating the transmission power adjustment increase and decrease instruction of the current signal transmitted, and the last transmission power adjustment step length is used for indicating the step length for adjusting the transmission power of the last signal transmitted.

It should be noted that, in this embodiment, when the last transmission power adjustment step length is the initial transmission power adjustment step length, the initial transmission power adjustment step length may be preset by the terminal, or the initial transmission power adjustment step length may also be obtained by the terminal according to a parameter issued by the access network device.

402. The terminal judges whether the current sending power adjustment command is the same as the last sending power adjustment command;

after determining the current transmit power adjustment command, the terminal determines whether the current transmit power adjustment command is the same as the last transmit power adjustment command, and it can be understood that the last transmit power adjustment command has already been determined before the last transmit signal is transmitted.

403. And if not, the terminal acquires the current transmission power adjustment step length according to the last transmission power adjustment step length.

And if the terminal judges that the current transmission power adjustment command is different from the last transmission power adjustment command, the terminal determines the current transmission power adjustment step length on the basis of the last transmission power adjustment step length.

In specific implementation, the terminal may use an N +1 th step value in a preset adjustment step sequence as the current transmission power adjustment step, where the nth step value in the adjustment step sequence is the last transmission power adjustment step, and the N +1 th step value is less than or equal to the nth step value, for example: the preset adjustment step length sequence comprises the following steps: 8. 7, 5, 2, assuming that the last transmission power adjustment step is 8, when the current transmission power adjustment command is different from the last transmission power adjustment command, selecting the next step 7 as the current transmission power adjustment step, where the preset sequence may be an arithmetic sequence, an equal ratio sequence, or other sequences; or, the terminal may further use a transmission power adjustment step value corresponding to half of the last transmission power adjustment step as the current transmission power adjustment step; or, the terminal may further use a transmission power adjustment step value corresponding to the last transmission power adjustment step minus the preset difference as the current transmission power adjustment step, for example: if the last transmission power adjustment step size is 8 and the preset difference is 2, then 6 may be used as the current transmission power adjustment step size, which is equivalent to selecting the next step value in a decreasing sequence of equal differences as the current transmission power adjustment step size.

404. And the terminal updates the last sending power according to the obtained current sending power adjustment step length so as to obtain the current sending power.

And after determining the current transmission power adjustment step length, the terminal updates the last transmission power according to the current transmission power adjustment step length to obtain the current transmission power, and transmits a signal by using the current transmission power.

In the embodiment of the invention, if the current sending power adjustment command is different from the sending power adjustment command of the last sending signal, the terminal obtains the current sending power adjustment step length according to the last sending power adjustment step length, updates the last sending power to obtain the current sending power, so that the sending power adjustment can be realized only by feeding back fewer times, and the expense of control information is saved.

In the above embodiment, the terminal determines whether the current transmit power adjustment command is the same as the last transmit power adjustment command, and in practical application, the terminal may first determine whether the current transmit power adjustment command is the first transmit power adjustment command received by the terminal in the current period and then perform subsequent processing, where the uplink power synchronization method in the embodiment of the present invention is described in detail below, with reference to fig. 5, another embodiment of the uplink power synchronization method in the embodiment of the present invention includes:

501. the terminal determines the last sending power, the last sending power adjustment command, the current sending power adjustment command and the last sending power adjustment step length;

the previous transmission power is the transmission power of the last signal transmitted on the uplink carrier, the current transmission power adjustment command is used for indicating the transmission power adjustment increase/decrease instruction of the current transmission signal, and the previous transmission power adjustment step is used for adjusting the transmission power of the last signal transmitted.

In practical applications, the terminal may determine the current transmission power and then transmit the signal according to the current transmission power, or may transmit the signal according to a preset power and then determine the current transmission power, which is not limited herein.

502. The terminal judges whether the current sending power adjustment command is the first sending power adjustment command received by the terminal in the period, if so, the step 503 is executed, and if not, the step 504 is executed;

after the terminal determines the current sending power, the current sending power adjustment command and the last sending power adjustment step length, whether the current sending power adjustment command is the first sending power adjustment command received by the terminal in the period is judged;

if the terminal receives the first transmit power adjustment command in the present period, go to step 503;

if not, step 504 is executed.

503. The terminal determines the current transmission power adjustment step length as a preset adjustment step length;

and after the terminal determines that the received current power adjustment command is the first transmission power adjustment command received in the period, the terminal determines that the current transmission power adjustment step size is the preset adjustment step size.

The preset adjustment step length may be sent to the terminal by the access network device, or may be set by the terminal in a user-defined manner, which is not limited herein. It should be understood by those skilled in the art that, for the last transmission power adjustment command, similar to step 503, that is, if the last power adjustment command is the first transmission power adjustment command received in the last period, the last transmission power adjustment step size may be regarded as an initial transmission power adjustment step size, or referred to as a preset adjustment step size, where the initial transmission power adjustment step size is preset by the terminal, and specifically, may be calculated by an algorithm according to a related adjustment step size, or the initial transmission power adjustment step size may also be obtained by the terminal according to a parameter issued by the access network device, that is, the access network device directly indicates how much the initial adjustment step size is by the parameter.

504. The terminal judges whether the current sending power adjustment command is the same as the last sending power adjustment command, if so, the step 505 is executed, and if not, the step 506 is executed;

after determining that the received current power adjustment command is not the first transmission power adjustment command received in the period, the terminal determines whether the current transmission power adjustment command is the same as the transmission power adjustment command of the previous transmission signal.

If the current transmit power adjustment command is the same as the transmit power adjustment command of the last transmit signal, go to step 505;

if the current transmit power adjustment command is not the same as the transmit power adjustment command of the last transmitted signal, step 506 is performed.

505. The terminal determines the last transmission power adjustment step length as the current transmission power adjustment step length;

506. The terminal obtains the current transmission power adjustment step length according to the last transmission power adjustment step length;

if the terminal determines that the current transmit power adjustment command is different from the last transmit power adjustment command, the terminal obtains the current transmit power adjustment step length according to the last transmit power adjustment step length, and how to obtain the current transmit power adjustment step length according to the last transmit power adjustment step length may refer to the description after step 403, which is not described herein again.

507. And the terminal updates the last sending power according to the current sending power adjustment step length to obtain the current sending power.

And after the terminal determines the current transmission power adjustment step length, updating the last transmission power according to the current transmission power adjustment step length to obtain the current transmission power.

After the terminal updates the current transmission power, the steps 501 to 507 may be performed in a loop until the current transmission power is synchronized with the received power of the access network device, or reaches a preset range, which is not limited herein.

In the embodiment of the invention, the terminal judges whether the current sending power adjustment command is the first sending power adjustment command received by the terminal in the period, and if not, the terminal judges whether the current sending power adjustment command is the same as the sending power adjustment command of the last sending signal, thus avoiding the situation that the terminal cannot find out the last sending power adjustment command when judging whether the current sending power adjustment command is the same as the sending power adjustment command of the last sending signal, and ensuring that the terminal operates more stably.

In the above embodiment, after the terminal updates the current transmission power according to the current transmission power adjustment step size, if the current transmission power adjustment step size meets the preset condition, the terminal may further perform subsequent operations, and the uplink power synchronization method in the embodiment of the present invention is specifically described below, referring to fig. 6, where another embodiment of the uplink power synchronization method in the embodiment of the present invention includes:

601. the terminal determines the last sending power, the last sending power adjustment command, the current sending power adjustment command and the last sending power adjustment step length

The terminal determines the last transmission power and the current transmission power adjustment command, wherein the last transmission power is the transmission power of the signal transmitted on the last uplink carrier, the last transmission power adjustment command is used for indicating the transmission power adjustment increase and decrease instruction of the last signal transmitted, and the last transmission power adjustment step is used for adjusting the transmission power of the last signal transmitted.

602. The terminal determines whether the current transmit power adjustment command is the same as the transmit power adjustment command of the last transmit signal, if so, performs step 603, and if not, performs step 604.

603. The terminal determines the last transmission power adjustment step length as the current transmission power adjustment step length;

604. The terminal obtains the current transmission power adjustment step length according to the last transmission power adjustment step length;

if the terminal judges that the current sending power adjustment command is different from the sending power adjustment command of the last sending signal, the terminal can take the (N + 1) th step value in a preset adjustment step sequence as the current sending power adjustment step, wherein the Nth step value in the adjustment step sequence is the last sending power adjustment step, and the (N + 1) th step value is smaller than or equal to the Nth step value; or, the terminal may further use a transmission power adjustment step value corresponding to half of the last transmission power adjustment step as the current transmission power adjustment step; or, the terminal may further use a corresponding transmission power adjustment step value obtained by subtracting the preset difference from the last transmission power adjustment step as the current transmission power adjustment step.

605. And the terminal updates the last sending power according to the obtained current sending power adjustment step length so as to obtain the current sending power.

And after the terminal determines the current transmission power adjustment step length, updating the last transmission power according to the current transmission power adjustment step length.

After the terminal updates the last transmission power, the steps 601 to 605 may be performed in a loop until the current transmission power and the received power of the access network device are synchronized, or a preset synchronization range is reached, which is not limited herein.

606. If the current transmission power adjustment step length is smaller than or equal to the preset value, the terminal determines that the current transmission power adjustment step length is a fixed adjustment step length;

and if the current transmission power adjustment step length is smaller than or equal to the preset value, the terminal determines that the current transmission power adjustment step length is a fixed adjustment step length. It can be understood that after the terminal determines the fixed adjustment step size, the steps 601 to 605 are not performed in a loop, and the current transmission power may be updated according to the loop step size until the current transmission power is synchronized with the received power of the access network device or the current transmission power reaches the preset synchronization range. The preset value may be set by the terminal or the access network device according to actual situations, and is not limited herein.

607. And if the terminal judges that the duration length of the signal transmitted on the current uplink carrier reaches a preset threshold, the terminal determines that the current transmission power adjustment step length is a fixed adjustment step length.

608. And the terminal updates the last sending power according to the fixed adjustment step length.

And after the terminal determines that the current transmission power adjustment step length is a fixed adjustment step length, updating the last transmission power according to the fixed adjustment step length to obtain the current transmission power.

In the embodiment of the invention, when the current transmission power adjustment step length is less than or equal to the preset value, the terminal determines the current transmission power adjustment step length as the fixed adjustment step length, updates the last transmission power according to the fixed adjustment step length to obtain the current transmission power, reduces the operation of the terminal after the operation of the terminal reaches a certain degree, and saves the expenditure of terminal resources.

the terminal determines that the current transmission power is 17dB, the current transmission power adjustment command is up, and the last transmission power adjustment step length is 12;

the terminal judges that the current sending power adjusting command is not the first sending power adjusting command received in the period;

the terminal judges that the current sending power adjustment command 'up' is the same as the sending power adjustment command 'up' of the last sending signal, and the terminal determines the last sending power adjustment step length 12 as the current sending power adjustment step length 12;

the terminal updates the current transmission power to 29dB according to the current transmission power adjustment step length 12;

the terminal determines that the current transmission power is 29dB, the current transmission power adjustment command is down, and the last transmission power adjustment step length is 12;

the terminal judges that the current sending power adjustment command 'down' is different from the sending power adjustment command 'up' of the last sending signal, and the terminal determines 1/2 of the last sending power adjustment step length as the current sending power adjustment step length 6;

the terminal updates the current transmission power to 23dB according to the current transmission power adjustment step length 6;

the terminal determines that the current transmission power is 23dB, the current transmission power adjustment command is up, and the last transmission power adjustment step length is 6;

the terminal judges that the current sending power adjustment command 'up' is different from the sending power adjustment command 'down' of the last sending signal, and the terminal determines 1/2 of the last sending power adjustment step length as the current sending power adjustment step length 3;

the terminal updates the current transmission power to 26dB according to the current transmission power adjustment step length 3;

the terminal determines that the current transmission power is 26dB, the current transmission power adjustment command is up, and the last transmission power adjustment step length is 6;

the transmission power adjustment step length 3 is smaller than a preset value 4, and the terminal determines that the current transmission power adjustment step length is a fixed adjustment step length 3;

and the terminal updates the current transmission power to 26dB according to the fixed power adjustment step size 3.

Referring to fig. 7, an access network device in an embodiment of the present invention is described below, where an embodiment of an access network device in an embodiment of the present invention includes:

a determining module 701, configured to determine a preset value and a measured value of a signal sent by a terminal on a current uplink carrier;

an obtaining module 702, configured to obtain a power adjustment parameter according to the measurement value and the preset value determined by the determining module 701, where the power adjustment parameter is used to indicate a change of an adjustment step length, and the adjustment step length is used for the terminal to update the transmission power of the transmission signal;

a first feedback module 703, configured to feed back the power adjustment parameter obtained by the obtaining module 702 to the terminal.

In the embodiment of the present invention, the obtaining module 702 obtains the power adjustment parameter indicating the change of the adjustment step according to the measured value and the preset value of the signal sent by the terminal on the current uplink carrier wave determined by the determining module 701, and since the adjustment step for updating the sending power is adjusted in real time according to the current sending power and the preset value, the access network device can more accurately calculate the power deviation between the sending power of the terminal and the receiving power of the access network device, and more accurately feed back the power control adjustment information to the terminal, so that the terminal can more quickly converge to the target sending power, the power control adjustment convergence time is shortened, and the transmission time resource is saved.

In the above embodiment, the first feedback module 703 feeds back the power adjustment parameter acquired by the acquisition module 702 to the terminal, in practical application, the terminal may first determine whether a preset condition is met, and when the preset condition is met, stop the operation performed by the first feedback module 703, and may feed back a company power adjustment command to the terminal according to another frame format, where access network equipment in the embodiment of the present invention is described in detail below, with reference to fig. 8, another embodiment of the access network equipment in the embodiment of the present invention includes:

a determining module 801, configured to determine a preset value and a measured value of a signal sent by a terminal on a current uplink carrier;

an obtaining module 802, configured to obtain a power adjustment parameter according to the measurement value and the preset value determined by the determining module 801, where the power adjustment parameter is used to indicate a change of an adjustment step length, and the adjustment step length is used for the terminal to update the transmission power of the transmission signal;

a first feedback module 803, configured to feed back the power adjustment parameter obtained by the obtaining module 802 to the terminal.

In this embodiment, the obtaining module 802 is specifically configured to determine a difference between a preset dB and a measured dB determined by the determining module 801 as a power adjustment parameter, where the power adjustment parameter is used to indicate a change of an adjustment step length, and the adjustment step length is used for updating, by a terminal, a transmission power of a transmission signal;

the first feedback module 803 is specifically configured to feed back the power adjustment parameter obtained by the obtaining module 802 to the terminal according to a first frame format, where the first frame format can be used to carry the power adjustment parameter;

the access network device further includes:

a judging module 804, configured to judge whether a preset condition is met;

a stopping module 805, configured to stop, when the determining module 804 determines that the preset condition is met, the first feedback module 803 from feeding back the power adjustment parameter to the terminal according to the first frame format;

a second feedback module 806, configured to, when the stopping module 805 stops feeding back the power adjustment parameter according to the first frame format, feed back a transmission power adjustment command of the transmission signal to the terminal using the second frame format.

In the embodiment of the present invention, the determining module 804 determines whether the preset condition is met, when the preset condition is met, the stopping module 805 stops the operation of the first feedback module 803, and the second feedback module 806 feeds back the transmission power adjustment command of the transmission signal to the terminal according to the second frame format, so that unnecessary operation of the access network device after the access network device meets the requirement can be avoided, and system resources are saved.

In the above embodiment, the determining module 804 determines whether the preset condition is met, and in practical applications, the determining module 804 may determine whether the number of frames in the first frame format reaches the preset number or whether the power adjustment parameter is smaller than the preset value, and the access network device in the embodiment of the present invention is described in detail below, referring to fig. 9, where another embodiment of the access network device in the embodiment of the present invention includes:

a determining module 901, configured to determine a preset value and a measured value of a signal sent by a terminal on a current uplink carrier;

an obtaining module 902, configured to obtain a power adjustment parameter according to the measured value and the preset value determined by the determining module 901, where the power adjustment parameter is used to indicate a change of an adjustment step length, and the adjustment step length is used for the terminal to update the transmission power of the transmission signal;

a first feedback module 903, configured to feed back the power adjustment parameter obtained by the obtaining module 902 to the terminal.

The obtaining module 902 is specifically configured to determine a difference between a dB of the preset value and a dB of the measured value determined by the determining module 901 as a power adjustment parameter, where the power adjustment parameter is used to indicate a change of an adjustment step length, and the adjustment step length is used for updating the transmission power of the transmission signal by the terminal;

the first feedback module 903 is specifically configured to feed back the power adjustment parameter acquired by the acquisition module 902 to the terminal according to a first frame format, where the first frame format can be used to carry the power adjustment parameter;

the access network device further includes:

a judging module 904, configured to judge whether a preset condition is met;

a stopping module 905, configured to stop, when the determining module 904 determines that the preset condition is met, the first feedback module 803 feeding back the power adjustment parameter to the terminal according to the first frame format;

a second feedback module 906, configured to feed back a sending power adjustment command of the sending signal to the terminal by using the second frame format when the stopping module 905 stops feeding back the power adjustment parameter according to the first frame format;

in this embodiment, the determining module 904 specifically includes:

a first judging unit 9041, configured to judge whether the number of frames in the first frame format fed back by the first feedback module 903 reaches a preset number, and if the number of frames reaches the preset number, determine that a preset condition is met;

a second determining unit 9042, configured to determine whether the power adjustment parameter acquired by the acquiring module 902 is smaller than a preset value, and if the power adjustment parameter is smaller than the preset value, determine that a preset condition is met;

a third determining unit 9043, configured to determine whether a duration of a signal sent by the terminal on the current uplink carrier reaches a preset threshold, and if the duration reaches the preset threshold, determine that a preset condition is met.

In the embodiment of the present invention, the first determining unit 9041 and the second determining unit 9042 determine whether the preset condition is satisfied, so that the determination of the determining module 904 is more accurate.

For the convenience of understanding the above embodiments, the following describes an interaction process of each unit of the access network device in a specific application scenario:

after the access network device receives a transmission signal sent by the terminal on a current uplink carrier, the determining module 901 determines that the set target received signal power value is 30dB and the received signal power of the transmission signal is 2 dB;

the obtaining module 902 determines a difference value +28 between the dB value 30 of the target received signal power value and the dB value 2 of the received signal power as a power adjustment parameter;

the first feedback module 903 feeds back the power adjustment parameter to the terminal according to the E-F-DPCH frame format, and if the current E-F-DPCH frame format can be adjusted by 16dB at maximum in one slot, the first feedback module 903 feeds back +16 as the power adjustment parameter to the terminal;

the second judgment unit 9042 judges that the current power adjustment parameter 16 is greater than 2;

after the access network device receives a transmission signal sent by the terminal on a current uplink carrier, the determining module 901 determines that the set target received signal power value is 30dB and the received signal power of the transmission signal is 18 dB;

the obtaining module 902 determines the difference +12 between the dB value 30 of the target received signal power value and the dB value 18 of the received signal power as a power adjustment parameter;

the first feedback module 903 feeds back the power adjustment parameter to the terminal according to the frame format of the E-F-DPCH, and if the current frame format of the E-F-DPCH can be adjusted by 16dB to the maximum within one slot to be greater than +12, the first feedback module 903 feeds back +12 as the power adjustment parameter to the terminal;

after the access network device receives a transmission signal sent by the terminal on a current uplink carrier, the determining module 901 determines that the set target received signal power value is 30dB and the received signal power of the transmission signal is 30 dB;

the obtaining module 902 determines a difference value 0 between the dB value 30 of the target received signal power value and the dB value 18 of the received signal power as a power adjustment parameter;

the first feedback module 903 feeds back the power adjustment parameter to the terminal according to the frame format of the E-F-DPCH, and if the current frame format of the E-F-DPCH can be adjusted by 16dB to the maximum within one slot to be greater than 0, the first feedback module 903 feeds back 0 as the power adjustment parameter to the terminal;

the second judgment unit 9042 judges that the current power adjustment parameter 0 is smaller than 2, and meets the condition;

the stopping module 905 stops the first feedback module 903 from feeding back the power adjustment parameter to the terminal according to the E-F-DPCH;

the second feedback module 906 feeds back a transmission power adjustment command of the power transmission signal to the terminal according to the existing F-DPCH frame format.

In the above, the access network device in the embodiment of the present invention is described from the perspective of the unitized functional entity, and in the following, the access network device in the embodiment of the present invention is described from the perspective of hardware processing, referring to fig. 10, another embodiment of the access network device 1000 in the embodiment of the present invention includes:

an input device 1001, an output device 1002, a processor 1003 and a memory 1004 (wherein the number of the processors 1003 in the access network apparatus 1000 may be one or more, and one processor 1003 is taken as an example in fig. 10). In some embodiments of the present invention, the input device 1001, the output device 1002, the processor 1003, and the memory 1004 may be connected by a bus or other means, wherein the connection by the bus is exemplified in fig. 10.

Wherein, by calling the operation instruction stored in the memory 1004, the processor 1003 is configured to execute the following steps:

determining a preset value and a measured value of a signal sent by a terminal on a current uplink carrier;

acquiring a power adjustment parameter according to the measured value and the preset value, wherein the power adjustment parameter is used for representing the change of an adjustment step length, and the adjustment step length is used for updating the transmission power of the transmission signal by the terminal;

feeding back the power adjustment parameter to the terminal;

in some embodiments of the present invention, the processor 1003 specifically executes the following steps:

determining the difference value between the dB of the preset value and the dB of the measured value as a power adjustment parameter;

feeding back the power adjustment parameter to the terminal according to a first frame format, wherein the first frame format can be used for bearing the power adjustment parameter;

in some embodiments of the present invention, the processor 1003 further performs the following steps:

judging whether preset conditions are met;

if the preset condition is met, stopping feeding back the power adjustment parameter to the terminal according to the first frame format;

when the access network equipment stops feeding back the power adjustment parameter according to the first frame format, feeding back a transmission power adjustment command of the transmission signal to the terminal by using a second frame format;

judging whether the number of the fed back frames in the first frame format reaches a preset number, and if so, determining that a preset condition is met;

and/or the presence of a gas in the gas,

and judging whether the power adjustment parameter is smaller than a preset value, and if so, determining that a preset condition is met.

Referring to fig. 11, a terminal in an embodiment of the present invention is described below, where an embodiment of the terminal in the embodiment of the present invention includes:

a determining module 1101, configured to determine a last transmission power, a last transmission power adjustment command, a current transmission power adjustment command, and a last transmission power adjustment step size, where the last transmission power is a transmission power of a last signal transmitted on an uplink carrier, the current transmission power adjustment command is used to indicate a transmission power adjustment increase/decrease instruction of a current transmission signal, and the last transmission power adjustment step size is used to indicate a step size for adjusting the transmission power of the last signal transmitted;

a first judging module 1102, configured to judge whether the current transmit power adjustment command determined by the determining module 1101 is the same as the previous transmit power adjustment command;

a first step size determining module 1103, configured to, when the first determining module 1103 determines that the current transmit power adjustment command is different from the transmit power adjustment command of the previous transmit signal, obtain a current transmit power adjustment step size according to the last transmit power adjustment step size determined by the determining module 1101;

an updating module 1104, configured to update the last transmit power determined by the determining module 1101 according to the current transmit power adjustment step determined by the first step determining module 1103, so as to obtain the current transmit power.

In this embodiment of the present invention, in the embodiment of the present invention, if the first determining module 1102 determines that the current transmit power adjustment command is different from the transmit power adjustment command of the previous transmit signal, the current transmit power adjustment step length is obtained according to the last transmit power adjustment step length determined by the first step determining module 1103, and the last transmit power is updated according to the obtained current transmit power adjustment step length, so that the transmit power adjustment by the halving method can be achieved only by feeding back fewer times, and the overhead of control information is saved.

In the above embodiment, before the first determining module 1002 determines whether the current transmit power adjustment command is the same as the transmit power adjustment command of the previous transmit signal, the terminal may further determine whether the current transmit power adjustment command is the first transmit power adjustment command received by the terminal in the present period, referring to fig. 12, in an embodiment of the present invention, another embodiment of the terminal includes:

a determining module 1201, configured to determine a current transmission power, a current transmission power adjustment command, and a last transmission power adjustment step, where the current transmission power is a transmission power of a transmission signal on a current uplink carrier, the current transmission power adjustment command is used to indicate a transmission power adjustment increase/decrease instruction of a current transmission signal, and the last transmission power adjustment step is used to adjust a transmission power of a last transmission signal;

a first judging module 1202, configured to judge whether the current transmit power adjustment command determined by the determining module 1201 is the same as the transmit power adjustment command of the previous transmit signal;

a first step size determining module 1203, configured to, when the first determining module 1203 determines that the current sending power adjustment command is different from the sending power adjustment command of the previous sending signal, obtain a current sending power adjustment step size according to the last sending power adjustment step size determined by the determining module 1201. The method specifically comprises the following steps: taking the (N + 1) th step value in a preset adjustment step sequence as the current transmission power adjustment step, wherein the nth step value in the adjustment step sequence is the last transmission power adjustment step, and the (N + 1) th step value is less than or equal to the nth step value; or, taking the transmission power adjustment step value corresponding to half of the last transmission power adjustment step as the current transmission power adjustment step; or, the corresponding transmission power adjustment step value after subtracting a preset difference value from the last transmission power adjustment step is taken as the current transmission power adjustment step;

an updating module 1204, configured to update the last transmission power determined by the determining module 1201 according to the current transmission power adjustment step determined by the first step determining module 1203, so as to obtain the current transmission power;

in this embodiment, the terminal further includes:

a second determining module 1205, configured to determine whether the current transmit power adjustment command determined by the determining module 1201 is a first transmit power adjustment command received by the terminal in the current period;

a second step size determining module 1206, configured to determine that the current transmission power adjustment step size is a preset adjustment step size when the second determining module 1205 determines that the current transmission power adjustment command is the first transmission power adjustment command received by the terminal in the current period;

a negative triggering module 1207, configured to trigger the first determining module 1202 when the second determining module 1205 determines that the current transmit power adjustment command is not the first transmit power adjustment command received by the terminal in the present period;

a third step length determining module 1208, configured to determine the last step length of the transmit power adjustment as the current step length of the transmit power adjustment when the first determining module 1202 determines that the current transmit power adjustment command is the same as the transmit power adjustment command of the last transmit signal.

In this embodiment of the present invention, the second determining module 1205 determines first whether the current transmit power adjustment command is the first transmit power adjustment command received by the terminal in the period, and if not, the first determining module 1202 determines second whether the current transmit power adjustment command is the same as the transmit power adjustment command of the previous transmit signal, so as to avoid that the first determining module 1202 cannot find out the previous transmit power adjustment command when determining that the current transmit power adjustment command is the same as the transmit power adjustment command of the previous transmit signal, so that the operation of the terminal is more stable.

In the above embodiment, the updating module 1204 updates the current transmission power determined by the determining module 1201 according to the current transmission power adjustment step length determined by the first step length determining module 1203, in practical applications, when the current transmission power adjustment step length reaches a preset value, the terminal may determine that the current transmission power adjustment step length is a fixed adjustment step length, and update the current transmission power according to the fixed step length, please refer to fig. 13, where another embodiment of the terminal in the embodiment of the present invention includes:

a determining module 1301, configured to determine a current transmission power, a current transmission power adjustment command, and a last transmission power adjustment step, where the current transmission power is a transmission power of a transmission signal on a current uplink carrier, the current transmission power adjustment command is used to indicate a transmission power adjustment increase/decrease instruction of a current transmission signal, and the last transmission power adjustment step is used to adjust a transmission power of a last transmission signal;

a first judging module 1302, configured to judge whether the current transmit power adjustment command determined by the determining module 1301 is the same as the transmit power adjustment command of the previous transmit signal;

a first step length determining module 1303, configured to determine 1/2 of the last transmit power adjustment step length determined by the determining module 1301 as the current transmit power adjustment step length when the first determining module 1303 determines that the current transmit power adjustment command is different from the transmit power adjustment command of the last transmit signal;

an updating module 1304, configured to update the current transmission power determined by the determining module 1301 according to the current transmission power adjustment step determined by the first step determining module 1303;

the terminal further includes:

a second determining module 1305, configured to determine whether the current transmit power adjustment command determined by the determining module 1301 is the first transmit power adjustment command received by the terminal in the present period;

a second step size determining module 1306, configured to determine, when the second determining module 1305 determines that the current transmit power adjustment command is the first transmit power adjustment command received by the terminal in the current period, that the current transmit power adjustment step size is a preset adjustment step size;

a negative triggering module 1307, configured to trigger the first determining module 1302 when the second determining module 1305 determines that the current transmission power adjustment command is not the first transmission power adjustment command received by the terminal in the current period;

a third step length determining module 1308, configured to determine, when the current transmit power adjustment command determined by the determining module 1301 is the same as the transmit power adjustment command of the previous transmit signal, the last transmit power adjustment step length as the current transmit power adjustment step length;

in this embodiment, the terminal further includes:

a fixed step length determining module 1309, configured to determine, when the current transmit power adjustment step length determined by the first step length determining module 1303 is less than or equal to a preset value, that the current transmit power adjustment step length is a fixed adjustment step length;

a fixed updating module 1310, configured to update the current transmission power according to the fixed adjustment step determined by the fixed step determining module 1309.

In yet another implementation manner of this embodiment, the fixed step determining module 1309 may be configured to determine that the current transmission power adjustment step is a fixed adjustment step when the duration of sending a signal on the current uplink carrier reaches a preset number;

a fixed updating module 1310, configured to update the current transmission power according to the fixed adjustment step determined by the fixed step determining module 1309. In the embodiment of the present invention, when the current transmission power adjustment step is less than or equal to the preset value, the fixed step determining module 1309 determines that the current transmission power adjustment step is the fixed adjustment step, and the fixed updating module 1310 updates the current transmission power according to the fixed adjustment step.

In order to facilitate understanding of the above embodiments, the following describes an interaction process of each unit of the above terminal in a specific application scenario:

the determining module 1301 determines that the current transmission power is 17dB, the current transmission power adjustment command is "up", and the last transmission power adjustment step size is 12;

the second determining module 1305 determines that the current transmit power adjustment command is not the first transmit power adjustment command received in the period;

the first determining module 1302 determines that the current transmit power adjustment command "up" is the same as the transmit power adjustment command "up" of the previous transmit signal, and the third step determining module 1308 determines the last transmit power adjustment step size 12 as the current transmit power adjustment step size 12;

the updating module 1304 updates the current transmission power to 29dB according to the current transmission power adjustment step size 12;

the determining module 1301 determines that the current transmission power is 29dB, the current transmission power adjustment command is "down", and the last transmission power adjustment step size is 12;

the first judging module 1302 judges that the current transmission power adjustment command "down" is different from the transmission power adjustment command "up" of the last transmission signal, and the first step length determining module 1303 determines 1/2 of the last transmission power adjustment step length as the current transmission power adjustment step length 6;

the updating module 1304 updates the current transmission power to 23dB according to the current transmission power adjustment step size 6;

the determining module 1301 determines that the current transmission power is 23dB, the current transmission power adjustment command is "up", and the last transmission power adjustment step size is 6;

the first judging module 1302 judges that the current transmission power adjustment command "up" is different from the transmission power adjustment command "down" of the last transmission signal, and the first step length determining module 1303 determines 1/2 of the last transmission power adjustment step length as the current transmission power adjustment step length 3;

the transmission power adjustment step length 3 is smaller than the preset value 4, and the fixed step length determining module 1309 determines that the current transmission power adjustment step length is the fixed adjustment step length 3;

the fixed update module 1310 updates the current transmit power to 26dB by a fixed power adjustment step size of 3.

In the above, the terminal in the embodiment of the present invention is described from the perspective of the unitized functional entity, and in the following, the terminal in the embodiment of the present invention is described from the perspective of hardware processing, please refer to fig. 14, and another embodiment of the terminal 1400 in the embodiment of the present invention includes:

input means 1401, output means 1402, a processor 1403 and a memory 1404 (wherein the number of processors 1403 in the terminal 1400 may be one or more, one processor 1403 is taken as an example in fig. 14). In some embodiments of the present invention, the input device 1401, the output device 1402, the processor 1403, and the memory 1404 may be connected by a bus or other means, wherein the connection by a bus is exemplified in fig. 14.

Wherein, by calling the operation instruction stored in the memory 1404, the processor 1403 is configured to perform the following steps:

determining current transmission power, a current transmission power adjustment command and a last transmission power adjustment step size, wherein the current transmission power is the transmission power of a transmission signal on a current uplink carrier, the current transmission power adjustment command is used for expressing a transmission power adjustment increase and decrease instruction of the current transmission signal, and the last transmission power adjustment step size is used for adjusting the transmission power of the last transmission signal;

judging whether the current sending power adjustment command is the same as the sending power adjustment command of the last sending signal;

if not, determining 1/2 of the last sending power adjustment step length as the current sending power adjustment step length;

updating the current transmission power according to the current transmission power adjustment step length;

in some embodiments of the present invention, the processor 1403 further performs the following steps:

when the current sending power adjustment command is the same as the sending power adjustment command of the last sending signal, determining the last sending power adjustment step length as the current sending power adjustment step length;

judging whether the current sending power adjustment command is the first sending power adjustment command received by the terminal in the period;

if yes, determining the current transmission power adjustment step length as a preset adjustment step length;

if not, executing the step that the terminal judges whether the current sending power adjustment command is the same as the sending power adjustment command of the last sending signal;

when the current transmission power adjustment step length is smaller than or equal to a preset value, determining the current transmission power adjustment step length as a fixed adjustment step length;

and updating the current transmission power according to the fixed adjustment step length.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some 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. An uplink power synchronization method, comprising:

the terminal judges whether the current sending power adjustment command is the same as the last sending power adjustment command; if not, the terminal obtains the current transmission power adjustment step length according to the last transmission power adjustment step length;

the terminal updates the last sending power according to the obtained current sending power adjustment step length to obtain the current sending power;

if not, the terminal obtains the current transmission power adjustment step length according to the last transmission power adjustment step length, and the method comprises the following steps:

taking the (N + 1) th step value in a preset adjustment step sequence as the current transmission power adjustment step, wherein the nth step value in the adjustment step sequence is the last transmission power adjustment step, and the (N + 1) th step value is less than or equal to the nth step value, or

Taking the transmission power adjustment step value corresponding to half of the last transmission power adjustment step as the current transmission power adjustment step, or

2. The method of claim 1, wherein the initial transmission power adjustment step size is preset by the terminal when the last transmission power adjustment step size is the initial transmission power adjustment step size.

3. The method of claim 1, wherein when the last transmission power adjustment step size is an initial transmission power adjustment step size, the initial transmission power adjustment step size is obtained by the terminal according to a parameter issued by an access network device.

4. The method of claim 1,

the method further comprises the following steps:

5. The method of claim 1, further comprising:

6. The method of claim 1, further comprising:

7. An uplink power synchronization method, comprising:

wherein the method further comprises:

8. An uplink power synchronization method, comprising:

wherein the method further comprises:

9. An uplink power synchronization method, comprising:

wherein the method further comprises:

10. A terminal, comprising:

an updating module, configured to update the last transmission power determined by the determining module according to the current transmission power adjustment step determined by the first step determining module, so as to obtain a current transmission power;

wherein, the terminal further includes:

11. The terminal of claim 10, further comprising:

12. A terminal, comprising:

wherein,

13. A storage medium, characterized in that it stores a computer program which, when executed by hardware, is able to implement the method of any one of claims 1 to 10.

14. A terminal comprising a processor and a memory;

the memory stores a computer program; the processor, when executing the computer program, is capable of implementing the method of any one of claims 1 to 10.