CN102573035B - Method for setting power for terminal, and base station - Google Patents

Abstract

The invention provides a method for setting power for a terminal and a base station. Involved in the field of communication technology. Solved the problem that due to the rapid change of RTWP, the RTWP used in the calculation of the open-loop transmission power is no longer the RTWP at the current moment, resulting in low calculation accuracy of the open-loop transmission power. The specific steps include: calculating the total broadband receiving power at the current moment, so that the change range value of the total broadband receiving power at the current moment relative to the total broadband receiving power calculated at the previous moment of calculating the total broadband receiving power is less than the broadband receiving total power of the current time period The change range value of the average value of the total power relative to the total broadband received power at the previous moment; the total broadband received power at the current moment is sent to the terminal through the broadcast channel, so that the terminal can calculate the open-loop transmit power based on the total broadband received power at the current moment. It can be applied to open-loop transmit power calculations.

Description

Method for setting power for terminal and base station

technical field

The present invention relates to the field of communication technology, in particular to a method for setting power for a terminal and a base station.

Background technique

In the communication system, when the terminal establishes communication with the base station, the terminal initiates access to the base station through RACH (Random Access Channel) and uses open-loop transmission power, that is, registers with the base station.

The terminal calculates the open-loop transmit power according to the following formula: Preamble_Initial_Power=PrimaryCPICH TX power-CPICH_RSCP+UL interference+Constant Value.

Among them, Preamble_Initial_Power is the open-loop transmission power; Primary CPICH TX power-CPICH_RSCP is the downlink path loss of CPICH (Common Pilot Channel, common pilot channel), the default uplink path loss and downlink path loss are the same; UL interference is the CPICH uplink interference intensity, That is, RTWP (Received Total Wideband Power, total broadband receiving power); ConstantValue is the constant value of BCH (Broadcast Channel, broadcast channel).

In the prior art, the terminal obtains the SIB7 message sent by the base station using the BCH, and the SIB7 message carries the calculated RTWP at the current moment. Since the RTWP changes frequently and quickly, the RTWP used by the terminal to calculate the open-loop transmit power can be the average value of all RTWPs before the current time period including the current moment, and the average value of the RTWP is calculated by the base station.

It can be seen from the above formula that the size of the RTWP affects the size of the open-loop transmit power. When the terminal uses the open-loop transmit power to initiate access to the base station, the size of the RTWP is affected by the open-loop transmit power.

In the process of realizing the above-mentioned power setting for the terminal, the inventor found that there are at least the following problems in the prior art: in practical applications, due to the rapid change frequency and large change range of RTWP, the terminal calculates the open-loop transmission power according to the RTWP received at this moment , and use the open-loop transmit power to initiate access to the base station, the RTWP may have changed, resulting in the open-loop transmit power is no longer the open-loop transmit power required at the moment, making the calculation of the open-loop The size of the ring transmit power also affects the size of the RTWP value, which leads to inaccurate RTWP values.

Contents of the invention

Embodiments of the present invention provide a method and a base station for setting power for a terminal, which solves the problem that the RTWP used when calculating the open-loop transmission power is no longer the current RTWP due to the rapid change of the RTWP, which leads to the accuracy of the calculation of the open-loop transmission power lower question.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

A method of setting power for a terminal, comprising:

Calculating the total broadband receiving power at the current moment, so that the change range value of the total broadband receiving power at the current moment relative to the total broadband receiving power calculated at the previous moment of calculating the total broadband receiving power is smaller than the broadband receiving total power in the current time period The change range value of the total power average value relative to the total broadband received power at the previous moment, the time period is the time period between adjacent times when the total broadband received power is calculated, and the current time period includes the current A time period of time, the current time being the end time of the current time period;

Sending the total broadband receiving power at the current moment to the terminal through the broadcast channel, so that the terminal calculates the open-loop transmitting power according to the total broadband receiving power at the current moment.

A base station, comprising:

A computing unit, configured to calculate the total broadband receiving power at the current moment, so that the change range value of the total broadband receiving power at the current moment relative to the total broadband receiving power calculated at the previous moment of calculating the total broadband receiving power is less than The average value of the broadband received total power in the current time period relative to the variation value of the broadband received total power at the previous moment, the time period is the time period between adjacent moments when the broadband received total power is calculated, and the current time period The time period is a time period including the current moment, and the current moment is the end moment of the current time period;

The sending unit is configured to send the total broadband receiving power calculated by the calculating unit to the terminal through the broadcast channel, so that the terminal calculates the open-loop transmitting power according to the total broadband receiving power at the current moment.

A wireless network controller, comprising:

The third modifying unit is used to modify the value of the specified parameter so as to modify the period of the broadcast channel, the size of the specified parameter affects the period size of the broadcast channel, the value of the specified parameter increases, and the period of the broadcast channel increases , the value of the specified parameter decreases, and the period of the broadcast channel decreases;

The shorter the period of the broadcast channel, the smaller the time interval for the broadcast channel to transmit the total broadband receiving power at the current moment to the terminal; the larger the period of the broadcast channel, the shorter the broadcast channel transmits the total broadband receiving power at the current moment to the terminal The longer the time interval is; the shorter the time interval for the terminal to receive the total broadband receiving power at the current moment.

The method and base station for setting power for the terminal provided by the embodiment of the present invention, after adopting the above scheme, the calculated RTWP at the current moment is not affected by the peak value of RTWP in the current time period, so that the RTWP at the current moment is relatively The change range value of RTWP calculated at the time is smaller than the change range value of the average RTWP value in the current time period relative to the RTWP value at the previous time period, so that the RTWP received by the terminal at the current time can better reflect the RTWP at the current time, and the terminal can improve the efficiency of receiving The accuracy of the open-loop transmit power calculated by the RTWP at the current moment.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a schematic diagram of a method for setting power for a terminal provided in this embodiment;

FIG. 2 is a schematic diagram of another method for setting power for a terminal provided in this embodiment;

FIG. 3 is a schematic diagram of a method for jointly setting power for a terminal by a radio network controller and a base station provided in this embodiment;

Fig. 4 adopts the RTWP waveform before and after the method described in Fig. 2 that the present embodiment provides;

FIG. 5 is a structural diagram of a terminal provided in this embodiment;

FIG. 6 is a structural diagram of another terminal provided in this embodiment;

FIG. 7 is a structural diagram of a wireless network controller provided in this embodiment.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

An embodiment of the present invention provides a method for setting power for a terminal, as shown in FIG. 1 , including the following steps:

101. Calculate the RTWP at the current moment, so that the change range value of the RTWP at the current moment relative to the RTWP calculated at the previous calculation time of the RTWP is smaller than the change range value of the RTWP average value in the current time period relative to the RTWP at the previous moment.

RTWP is easily affected by the outside world, which may lead to greater frequency and degree of RTWP changes.

For example, at a certain moment, the number of terminals communicating with the base station increases greatly, resulting in a relatively large increase in the RTWP at this moment.

Therefore, the base station calculates the RTWP at the current moment, so that the calculated RTWP at the current moment can reflect the change trend and value of the RTWP within the time period. Before the next calculation of the RTWP, the RTWP remains unchanged, which is the last calculated RTWP.

In an implementation of the embodiment of the present invention, the provided time period may be the time period between adjacent times for calculating RTWP, the current time period is the time period including the current time period, and the current time period is the end time of the current time period .

102. Send the RTWP at the current moment to the terminal through the broadcast channel, so that the terminal calculates the open-loop transmit power according to the RTWP at the current moment.

In order for the terminal to calculate the open-loop transmission power according to the received RTWP at the current moment, the base station sends the RTWP at the current moment to the terminal through the BCH and according to the set period.

After adopting the above scheme, the calculated RTWP at the current moment will not be affected by the peak value of RTWP in the current time period, so that the change range of the RTWP at the current moment relative to the RTWP calculated at the previous moment is smaller than the average RTWP in the current time period The change range value of the value relative to the RTWP at the previous moment makes the RTWP received by the terminal at the current moment more reflect the RTWP at the current moment, and improves the accuracy of the open-loop transmit power calculated by the terminal based on the received RTWP at the current moment.

In an implementation manner of an embodiment of the present invention, another method for setting power of a terminal is provided, including the following steps:

The first step is to calculate the RTWP at the current moment, so that the change range value of the RTWP at the current moment relative to the RTWP calculated at the previous RTWP calculation time is smaller than the change range value of the RTWP average value in the current period relative to the RTWP at the previous time period .

RTWP is easily affected by the outside world, which may lead to greater frequency and degree of RTWP changes.

For example, at a certain moment, the number of terminals communicating with the base station increases greatly, resulting in a relatively large increase in the RTWP at this moment.

Therefore, the base station calculates the RTWP at the current moment, so that the calculated RTWP at the current moment can reflect the change trend and value of the RTWP within the time period. Before the next calculation of the RTWP, the RTWP remains unchanged and is the last calculated RTWP.

In an implementation manner of the embodiments of the present invention, the base station calculates the RTWP at the current moment through filtering processing every preset time.

In one implementation of the embodiment of the present invention, if the RTWP at the current moment is increased relative to the RTWP calculated at the previous moment, the first filter factor is used for calculation; if the RTWP at the current moment is reduced relative to the RTWP calculated at the previous moment , the second filter factor is used for calculation; so that the RTWP increase rate calculated by the first filter factor is less than the RTWP decrease rate calculated by the second filter factor, and the first filter factor is smaller than the second filter factor. factor, and the rate of increase is less than the rate of decrease.

In an implementation of the embodiment of the present invention, the time period provided in this embodiment may be the time period between adjacent times when the RTWP is calculated, the current time period is the time period including the current time period, and the current time period is the current time period the end moment.

In an implementation manner of an embodiment of the present invention, the preset time may be: 90 milliseconds, 100 milliseconds, and so on.

In this embodiment, the preset time is not limited, and may be set according to actual needs, and details are not described here.

In one implementation of the embodiment of the present invention, before the base station calculates the RTWP at the current moment, the preset time is firstly modified, so that the modified preset time is shorter than the pre-modified preset time, so that the period for the base station to calculate the RTWP becomes shorter , the calculation frequency becomes larger, and the calculated RTWP can better reflect the RTWP of the corresponding time period, which increases the accuracy of the terminal to calculate the open-loop transmit power according to the RTWP.

Specifically, as shown in Figure 2, the step of calculating the RTWP at the current moment by filtering at preset times may include:

201. Estimate whether the RTWP at the current moment is greater than the RTWP at the previous moment according to a preset method.

Because RTWP is easily affected by external factors, the frequency and degree of RTWP changes are relatively large, and there may be peaks in RTWP, which have a great impact on the calculation of RTWP, which may cause the calculated RTWP to be too large.

In order to reduce the influence of the calculated RTWP by the peak value and enable the terminal to obtain an accurate RTWP at the current moment, before calculating the RTWP at the current moment, the base station first estimates whether the RTWP at the current moment is greater than the previous RTWP according to the preset method. Moments of RTWP.

In one implementation of the embodiment of the present invention, the step of estimating whether the RTWP at the current moment is greater than the RTWP at the previous moment according to a preset method may include: obtaining the minimum value of RTWP in the current time period; judging whether the minimum value is greater than the previous moment RTWP.

The preset method may also be: obtaining any value between the average value and the minimum value of the current time period; judging whether the obtained value is greater than the RTWP at the previous moment.

This embodiment does not limit the preset manner, which can be set according to actual needs, and will not be repeated here.

If the minimum value is greater than the RTWP at the previous moment, it means that all RTWPs in the current time period are greater than the RTWP at the previous moment, that is, the RTWP at the current moment is greater than the RTWP at the previous moment; if the minimum value is not greater than the RTWP at the previous moment , it means that the RTWP in the current time period may be greater than or less than the RTWP in the previous moment, but even if the RTWP in the current time period is greater than the RTWP in the previous moment, the difference between them is small, so if the minimum is not greater than the RTWP at the previous moment, then this situation is counted as the RTWP at the current moment is not greater than the RTWP at the previous moment.

Specifically, if the RTWP at the current moment is greater than the RTWP at the previous moment, perform step 202; if the RTWP at the current moment is not greater than the RTWP at the previous moment, perform step 203.

202. The RTWP at the current moment is the RTWP at the previous moment plus a first preset value.

The value range of the first preset value may be greater than 0 and less than the difference between the average value of RTWP in the current time period minus the RTWP at the previous moment.

In one implementation of the embodiment of the present invention, if the minimum RTWP value in the current time period is greater than the RTWP at the previous moment, it means that all RTWPs in the current time period are greater than the RTWP at the previous moment, and the RTWP at the current moment is relative to The RTWP at the previous moment increased, and the increase was relatively large.

In an implementation manner of the embodiments of the present invention, if the power of the RTWP at the current moment is increased relative to the power of the RTWP calculated at the previous moment, the first filter factor is used for calculation.

In an implementation of the embodiment of the present invention, as a preferred implementation of this embodiment, in order to reduce the magnitude of the increase of the RTWP at the current moment relative to the RTWP at the previous moment, the first preset value can be: the minimum value minus One thirty-second of the difference of the RTWP at the previous moment, wherein one thirty-second is the first filter factor.

In this embodiment, the first filter factor is not limited, and may be set according to actual needs, and details are not described herein again.

In this embodiment, the first preset value is not limited, and it can be set according to actual needs, which will not be repeated here.

203. The RTWP at the current moment is the RTWP at the previous moment minus a second preset value.

The value range of the second preset value may be greater than 0 and less than the difference between the RTWP at the previous moment minus the average value of the RTWP in the current time period.

In one implementation of the embodiment of the present invention, if the minimum RTWP value in the current time period is not greater than the RTWP at the previous moment, it means that all RTWPs in the current time period are not greater than the RTWP at the previous moment, and the RTWP at the current moment Compared with the RTWP at the previous moment, it may increase or decrease, but the increase is small.

If the RTWP is too large, the open-loop transmit power calculated by the terminal using the RTWP is also too large. Since the size of the open-loop transmit power also affects the size of the RTWP, if the open-loop transmit power is too large, the RTWP at the next moment will be too large. Continue to increase, the RTWP is too large to affect the communication performance in the network.

In an implementation manner of an embodiment of the present invention, if the power of the RTWP at the current moment is lower than that of the RTWP calculated at the previous moment, the second filter factor is used for calculation.

In order to make the RTWP at the current moment less or not increase compared to the RTWP at the previous time, the RTWP at the current moment is the RTWP at the previous time minus the second preset value.

In an implementation manner of the embodiment of the present invention, as a preferred implementation manner of this embodiment, the second preset value may be: 1/4 of the difference between the RTWP minus the minimum value at the previous moment, wherein 1/4 One is the second filter factor.

In one implementation of the embodiment of the present invention, the first filter factor is smaller than the second filter factor, and the RTWP increase speed calculated by using the first filter factor is smaller than the RTWP decrease calculated by using the second filter factor speed.

In this embodiment, the second filter factor is not limited, and may be set according to actual needs, and details are not described herein again.

In this embodiment, the second preset value is not limited, and it can be set according to actual needs, and details are not repeated here.

In the second step, the RTWP at the current moment is sent to the terminal through the broadcast channel, so that the terminal calculates the open-loop transmission power according to the RTWP at the current moment.

In order for the terminal to calculate the open-loop transmission power according to the received RTWP at the current moment, the base station sends the RTWP at the current moment to the terminal through the BCH and according to the set period.

After adopting the above scheme, the calculated RTWP at the current moment will not be affected by the peak value of RTWP in the current time period, so that the change range of the RTWP at the current moment relative to the RTWP calculated at the previous moment is smaller than the average RTWP in the current time period The change range value of the value relative to the RTWP at the previous moment makes the RTWP received by the terminal at the current moment more reflect the RTWP at the current moment, and improves the accuracy of the open-loop transmit power calculated by the terminal based on the received RTWP at the current moment.

In an implementation of the embodiment of the present invention, another method for setting the power of the terminal is provided. This method uses a different method from the above method embodiment to obtain the RTWP at the current moment, as shown in FIG. 3 , including the following steps:

301. Determine whether the RTWP at the current moment is greater than a preset value.

The larger the RTWP, the lower the accuracy of the open-loop transmit power calculated according to the RTWP. Determine whether the RTWP at the current moment is too large by setting a preset value.

In order to pave the way for the next steps, it is judged whether the RTWP at the current moment is greater than the preset value.

Specifically, if the RTWP at the current moment is greater than the preset value, execute step 302; if the RTWP at the current moment is not greater than the preset value, execute step 303.

302. Decrease the period of the broadcast channel.

BCH transmits the RTWP at the current moment to the terminal according to the channel period set by itself. The smaller the channel period of BCH, the shorter the time interval for BCH to transmit RTWP to the terminal; the larger the period, the greater the time interval for BCH to transmit RTWP to the terminal ; The shorter the time interval for the terminal to receive the RTWP, the more the last RTWP received by the terminal can reflect the current RTWP.

In an implementation of the embodiment of the present invention, in order to make the RTWP received by the terminal reflect the RTWP at the current moment, the BCH cycle is reduced by modifying the value of the specified parameter in the protocol, wherein the specified parameter affects the size of the BCH cycle .

In an implementation manner of an embodiment of the present invention, the BCH channel period may be: 90 milliseconds, 100 milliseconds, and so on.

This embodiment does not limit the period of the BCH channel, which can be set according to actual needs, and details will not be described here.

The designated parameters of the radio network controller affect the size of the BCH channel period. When the designated parameters of the radio network controller decrease, the BCH channel period decreases; when the designated parameters of the radio network controller increase, the BCH channel period increases.

In one implementation of the embodiment of the present invention, the period for BCH to send the current RTWP to the terminal is reduced by modifying the value of the designated parameter of the radio network controller to be smaller than the value before the modification of the designated parameter.

In order to reduce the BCH channel period, the value of the designated parameter of the radio network controller is modified to be smaller than the value before the modification of the designated parameter.

In this embodiment, the method for reducing the BCH channel period is not limited, and it may be any method known to those skilled in the art, which will not be repeated here.

Execute step 304 .

303. Increase the period of the broadcast channel.

In one implementation of the embodiment of the present invention, in order to make the RTWP received by the terminal reflect the RTWP at the current moment, the BCH cycle is increased by modifying the value of the specified parameter in the protocol.

In one implementation of the embodiments of the present invention, the period for BCH to send the current RTWP to the terminal is increased by modifying the value of the designated parameter of the radio network controller to be greater than the value before the modification of the designated parameter.

In order to increase the BCH channel period, the value of the designated parameter of the radio network controller is modified to be greater than the value before the modification of the designated parameter.

In this embodiment, the specified parameter is not limited, and may be any specified parameter known to those skilled in the art, which will not be repeated here.

In this embodiment, the method for increasing the BCH channel period is not limited, and it may be any method known to those skilled in the art, which will not be repeated here.

304. Calculate the RTWP at the current moment every preset time.

RTWP is easily affected by the outside world, which may lead to greater frequency and degree of RTWP changes.

For example, at a certain moment, the number of terminals communicating with the base station increases greatly, resulting in a relatively large increase in the RTWP at this moment.

Therefore, the base station calculates the RTWP at the current moment every preset time, so that the calculated RTWP at the current moment can reflect the RTWP change trend and value within this time period. Before the next RTWP calculation, the RTWP remains unchanged, which is the last calculation out of RTWP.

In an implementation of the embodiment of the present invention, the time period provided in this embodiment may be the time period between adjacent times when the RTWP is calculated, the current time period may be a time period including the current time, and the current time is the current time The end moment of the segment.

In an implementation manner of an embodiment of the present invention, the base station may use the average value of all RTWPs before the current time including the current time, and use the average value as the RTWP at the current time.

The method for calculating the RTWP at the current moment provided in this embodiment is not limited, and may be any method known to those skilled in the art, and will not be repeated here.

305. Send the current RTWP to the terminal through the broadcast channel, so that the terminal calculates the open-loop transmit power according to the current RTWP.

In one implementation of the embodiment of the present invention, the base station sends the current RTWP to the terminal according to the period of the BCH through the BCH, so that the terminal can calculate the open-loop transmission power according to the current RTWP.

In order for the terminal to calculate the open-loop transmission power according to the received RTWP at the current moment, the base station sends the RTWP at the current moment to the terminal through the BCH and according to the BCH period after the protocol modification.

After adopting the above scheme, by modifying the value of the specified parameter in the protocol, if the RTWP is greater than the preset value, the cycle of BCH channel sending RTWP to the terminal is reduced, and the frequency of sending RTWP is increased; if the RTWP is smaller than the preset value, the BCH channel sends The cycle of sending RTWP by the terminal increases, and the frequency of sending RTWP decreases; so that the RTWP value received by the terminal can better reflect the RTWP value at the current moment, and improve the accuracy of the open-loop transmission power calculated by the terminal based on the received RTWP value at the current moment .

In order to better illustrate the inventive purpose that this solution can achieve, some data and waveform diagrams after adopting this solution are provided below.

In Fig. 4, the dotted line represents the average value of RTWP within a time period of 1 second, and the realization represents the RTWP within this time period after rate wave processing is adopted, that is, the RTWP at the current moment.

As shown in FIG. 4 , the RTWP after filter processing changes slowly, and the range of change is also reduced, so that the RTWP obtained in a certain period of time less than 1 second can reflect the RTWP in this period of time.

In order to better understand the above embodiments, the following provides decoration embodiments corresponding to the above method embodiments.

This embodiment provides a base station, as shown in FIG. 5 , including: a calculation unit 51 and a sending unit 52 .

Wherein, the calculation unit 51 is used for the calculation unit for calculating the RTWP at the current moment, so that the RTWP at the current moment is less than the current time period RTWP average value relative to the RTWP calculated at the previous calculation of the RTWP. The change range value of the RTWP at the previous moment, the time period is the time period between adjacent times when the RTWP is calculated, the current time period is the time period including the current time period, and the current time period is the end time of the current time period.

The sending unit 52 is configured to send the RTWP at the current moment calculated by the calculation unit to the terminal through the broadcast channel, so that the terminal calculates the open-loop transmission power according to the RTWP at the current moment.

After adopting the above scheme, the RTWP at the current moment calculated by the calculation unit is not affected by the peak value of RTWP in the current time period, so that the change range of the RTWP at the current moment relative to the RTWP calculated at the previous moment is smaller than the current time period The change range of the average RTWP value relative to the RTWP at the previous moment makes the RTWP received by the terminal at the current moment better reflect the RTWP at the current moment, and improves the accuracy of the open-loop transmit power calculated by the terminal based on the received RTWP at the current moment sex.

In an implementation of the embodiment of the present invention, another base station is provided, as shown in FIG.

Specifically, the calculation unit 63 includes: an estimation module 631 , a first calculation module 632 , a second calculation module 633 , and a third calculation module 634 .

The estimation module 631 includes: an acquisition submodule 6311 and a judgment submodule 6312 .

The judging unit 61 is configured to judge whether the RTWP is greater than a preset value.

The larger the RTWP, the lower the accuracy of the open-loop transmit power calculated according to the RTWP. By setting the preset data to judge whether the RTWP at the current moment is too large.

In order to pave the way for subsequent steps, the judging unit judges whether the RTWP at the current moment is greater than a preset value.

The first modifying unit 62 is used to decrease the broadcast channel cycle if the judging unit judges that the RTWP at the current moment is greater than the preset value; if the judging unit judges that the RTWP at the current moment is smaller than the preset value, then increase the broadcast channel cycle big.

BCH transmits the RTWP at the current moment to the terminal according to the channel period set by itself. The smaller the channel period of BCH, the shorter the time interval for BCH to transmit RTWP to the terminal; the larger the period, the greater the time interval for BCH to transmit RTWP to the terminal ; The shorter the time interval for the terminal to receive the RTWP, the more the last RTWP received by the terminal can reflect the current RTWP.

In an implementation of the embodiment of the present invention, in order to make the RTWP received by the terminal reflect the RTWP at the current moment, therefore, the first modification unit modifies the value of the specified parameter in the protocol, so that if the RTWP is greater than the preset value, the BCH Decrease the cycle; if RTWP is less than the preset value, then increase the BCH cycle, where the specified parameters affect the size of the BCH cycle.

In an implementation manner of the embodiment of the present invention, the first modifying unit reduces the broadcast channel cycle as follows: the first modifying unit reduces the broadcast channel cycle by reducing the value of the specified parameter of the radio network controller; the first modification The unit increases the period of the broadcast channel as follows: the first modifying unit increases the period of the broadcast channel by increasing the value of the specified parameter of the radio network controller; the value of the specified parameter affects the period of the broadcast channel.

The calculation unit 63 is used to calculate the RTWP at the current moment, so that the RTWP at the current moment is less than the change of the RTWP at the current time period relative to the RTWP at the previous moment. Amplitude value.

In an implementation manner of the embodiments of the present invention, the calculating unit calculates the RTWP at the current moment as: the RTWP at the current moment calculated by the calculating unit through filtering processing every preset time.

RTWP is easily affected by the outside world, which may lead to greater frequency and degree of RTWP changes.

For example, at a certain moment, the number of terminals communicating with the base station increases greatly, resulting in a relatively large increase in the RTWP at this moment.

Therefore, the calculation unit calculates the RTWP at the current moment by filtering every preset time, so that the calculated RTWP at the current moment can reflect the RTWP change trend and value within this time period, and the RTWP remains unchanged until the next calculation of the RTWP , which is the last calculated RTWP.

In an implementation of the embodiment of the present invention, the time period provided in this embodiment may be the time period between adjacent times when the RTWP is calculated, the current time period is the time period including the current time period, and the current time period is the current time period the end moment.

Specifically, the estimation module 631 is configured to estimate whether the RTWP at the current moment is greater than the RTWP at the previous moment according to a preset method.

In one implementation of the embodiments of the present invention, the estimation module acquires the minimum value of the RTWP in the current time period, and judges whether the minimum value is greater than the RTWP at the previous moment.

If the minimum value is greater than the RTWP at the previous moment, it means that the RTWP at the current moment is greater than the RTWP at the previous moment; if the minimum value is not greater than the RTWP at the previous moment, it means that the RTWP at the current moment may be greater or smaller RTWP at the moment, but even if the RTWP at the current moment is greater than the RTWP at the previous moment, the difference between them is small, so if the minimum value is not greater than the RTWP at the previous moment, this situation is counted as the RTWP at the current moment RTWP is not greater than the RTWP at the previous moment.

Specifically, the obtaining submodule 6311 is used to obtain the minimum value of RTWP in the current time period.

The judging submodule 6312 is used to estimate whether the RTWP at the current moment is greater than the RTWP at the previous moment according to whether the minimum value acquired by the acquiring submodule is greater than the RTWP at the previous moment.

If the minimum value is greater than the RTWP at the previous moment, the RTWP at the current moment is greater than the RTWP at the previous moment.

If the minimum value is not greater than the RTWP at the previous moment, then the RTWP at the current moment is not greater than the RTWP at the previous moment.

The first calculation module 632 is used for calculating if the RTWP at the current moment increases relative to the RTWP calculated at the previous moment; if the RTWP at the current moment decreases relative to the RTWP calculated at the previous moment, then use The second filter factor is calculated; the speed of RTWP increase calculated by using the first filter factor is less than the rate of decrease of RTWP calculated by the second filter factor, and the first filter factor is smaller than the second filter factor.

In this embodiment, the first preset factor and the second preset factor are not limited, and may be set according to actual needs, and details are not described here.

The second calculation module 633 is used for if the estimation module estimates that the RTWP at the current moment is greater than the RTWP at the previous moment, then the RTWP at the current moment is the RTWP at the previous moment plus the first preset value, and the value range of the first preset value It is greater than 0 and less than the difference between the average value of RTWP in the current period minus the RTWP at the previous moment.

In one implementation of the embodiment of the present invention, if the minimum value is greater than the RTWP at the previous moment, the first preset value used by the first calculation module to calculate the RTWP at the current moment every preset time may be: the minimum value minus the previous One thirty-second of the difference of RTWP at one time, wherein one thirty-second is the first filter factor.

The third calculation module 634 is used for if the estimation module estimates that the RTWP at the current moment is not greater than the RTWP at the previous moment, then the RTWP at the current moment is the RTWP at the previous moment minus the second preset value, and the value of the second preset value The range is greater than 0 and less than the difference between the RTWP at the previous moment minus the average value of the RTWP in the current period.

In one implementation of the embodiment of the present invention, if the minimum value is not greater than the RTWP at the previous moment, the second preset value used by the first calculation module to calculate the RTWP at the current moment every preset time may be: the previous moment 1/4 of the difference between the RTWP minus the minimum value, where 1/4 is the second filter factor.

The sending unit 64 is configured to send the current RTWP calculated by the calculation unit to the terminal through the broadcast channel, so that the terminal calculates the open-loop transmission power according to the current RTWP.

In order for the terminal to calculate the open-loop transmission power according to the received RTWP at the current moment, the sending unit sends the RTWP at the current moment to the terminal according to the set period through the BCH.

In one embodiment of the embodiment of the present invention, the sending unit sends the current RTWP to the terminal through the BCH and according to the period of the BCH, so that the terminal performs corresponding operations according to the RTWP.

The second modifying unit 65 is configured to modify the preset time, so that the modified preset time is shorter than the pre-modified preset time.

Before calculating the RTWP at the current moment, the second modifying unit first modifies the preset time for calculating the RTWP, so that the modified preset time is shorter than the pre-modified preset time, so that the base station calculates the RTWP more frequently, and the calculated RTWP The RTWP at the corresponding time can be reflected more, and the accuracy of the open-loop transmission power calculated by the terminal according to the RTWP is increased.

After the above scheme is adopted, the value of the specified parameter or other parameter values in the protocol is modified by the first modification unit, so that if the RTWP is greater than the preset value, the cycle of sending RTWP to the terminal by the BCH channel is reduced, and the frequency of sending RTWP is increased. If the RTWP If it is less than the preset value, the cycle of BCH channel sending RTWP to the terminal increases, and the frequency of sending RTWP decreases; so that the RTWP value received by the terminal can better reflect the RTWP value at the current moment, and the terminal can calculate the open loop based on the received RTWP value Accuracy of transmitted power.

This embodiment provides a radio network controller mentioned in the above base station embodiment, as shown in FIG. 7 , including: a modifying unit 71 .

The third modifying unit 71 is used to modify the numerical value of the specified parameter, so as to modify the period of the broadcast channel, the size of the specified parameter affects the periodic size of the broadcast channel, the numerical value of the specified parameter increases, the period of the broadcast channel increases, and the numerical value of the specified parameter decreases , the period of the broadcast channel decreases.

The smaller the broadcast channel period, the smaller the time interval for the broadcast channel to transmit the current RTWP to the terminal; the larger the broadcast channel period, the greater the time interval for the broadcast channel to transmit the current RTWP to the terminal; the time for the terminal to receive the current RTWP The shorter the interval.

After adopting the above solution, the third modifying unit modifies the value of the specified parameter of the radio network controller, so that the cycle of the broadcast channel is also modified accordingly, so that the broadcast channel uses the modified channel cycle to send the RTWP update at the current moment to the terminal. The RTWP at the current moment can be reflected, and the accuracy of the open-loop transmission power calculated by the terminal according to the received RTWP at the current moment is improved.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be realized by means of software plus necessary general-purpose hardware, and of course also by hardware, but in many cases the former is a better embodiment . Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, such as a floppy disk of a computer , a hard disk or an optical disk, etc., including several instructions for enabling a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments of the present invention.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (15)

1. A method for setting power for a terminal, characterized in that, Calculating the total broadband receiving power at the current moment, so that the change range value of the total broadband receiving power at the current moment relative to the total broadband receiving power calculated at the previous moment of calculating the total broadband receiving power is smaller than the broadband receiving total power in the current time period The change range value of the total power average value relative to the total broadband received power at the previous moment, the time period is the time period between adjacent times when the total broadband received power is calculated, and the current time period includes the current A time period of time, the current time being the end time of the current time period; Sending the total broadband receiving power at the current moment to the terminal through the broadcast channel, so that the terminal calculates the open-loop transmitting power according to the total broadband receiving power at the current moment. 2. The method for setting power for a terminal according to claim 1, wherein the calculation of the total broadband receiving power at the current moment is: The total broadband received power at the current moment is calculated by means of filtering at preset intervals. 3. The method for setting power for a terminal according to claim 2, wherein the calculation of the total broadband receiving power at the current moment by filtering every preset time comprises: If the total broadband received power at the current moment is increased relative to the total broadband received power calculated at the previous moment, the first filter factor is used for calculation; if the total broadband received power at the current moment is compared to the broadband received at the previous moment When the total received power decreases, the second filter factor is used for calculation; so that the increase speed of the broadband received total power calculated by using the first filter factor is smaller than the wideband calculated by the second filter factor. The speed at which the total received power decreases, the first filter factor is smaller than the second filter factor. 4. The method for setting power for a terminal according to claim 2, wherein the total power of broadband reception at the current moment is sent to the terminal through the broadcast channel, so that the terminal receives the power according to the broadband reception at the current moment. Before calculating the open-loop transmission power of the total power, the method further includes: judging whether the total broadband receiving power at the current moment is greater than a preset value; If the total broadband receiving power is greater than the preset value, then decrease the broadcast channel period; if the broadband total receiving power is less than the preset value, then increase the broadcast channel period; The shorter the period of the broadcast channel, the smaller the time interval for the broadcast channel to transmit the total broadband receiving power at the current moment to the terminal; the larger the period of the broadcast channel, the shorter the broadcast channel transmits the total broadband receiving power at the current moment to the terminal The greater the time interval; the shorter the time interval for the terminal to receive the total broadband receiving power at the current moment; The sending the total broadband receiving power at the current moment to the terminal through the broadcast channel is: sending the total broadband receiving power at the current moment to the terminal through the broadcast channel according to the cycle of the broadcast channel, so that the terminal can transmit the total broadband receiving power at the current moment according to the broadcast channel. Calculate the open-loop transmit power based on the total broadband receive power at the current moment. 5. The method for setting power for a terminal according to claim 2 or 3, wherein the calculation of the total broadband receiving power at the current moment by means of filtering every preset time further comprises: Estimating whether the total broadband receiving power at the current moment is greater than the total broadband receiving power at the previous moment according to a preset method; If the total broadband receiving power at the current moment is greater than the total broadband receiving power at the previous moment, then the total broadband receiving power at the current moment is the total broadband receiving power at the previous moment plus a first preset value, the The value range of the first preset value is greater than 0 and less than the difference between the average value of the total broadband received power in the current period minus the total broadband received power at the previous moment; If the total broadband receiving power at the current moment is not greater than the total broadband receiving power at the previous moment, then the total broadband receiving power at the current moment is the total broadband receiving power at the previous moment minus a second preset value, so The value range of the second preset value is greater than 0 and less than the difference between the total broadband received power at the previous moment minus the average value of the total broadband received power in the current time period. 6. The method for setting power for a terminal according to claim 5, wherein said estimating whether the total broadband receiving power at the current moment is greater than the total broadband receiving power at the previous moment according to a preset method comprises: Obtain the minimum value of the total broadband receiving power in the current time period; According to whether the minimum value is greater than the total broadband received power at the previous moment, estimate whether the total broadband received power at the current moment is greater than the total broadband received power at the previous moment; If the minimum value is greater than the total broadband received power at the previous moment, the total broadband received power at the current moment is greater than the total broadband received power at the previous moment; If the minimum value is not greater than the total broadband received power at the previous moment, then the total broadband received power at the current moment is not greater than the total broadband received power at the previous moment. 7. The method for setting power for a terminal according to claim 6, characterized in that, before the calculation of the total broadband receiving power at the current moment, the method further comprises: The preset time is modified so that the modified preset time is shorter than the pre-modified preset time. 8. A base station, characterized in that, comprising: A computing unit, configured to calculate the total broadband receiving power at the current moment, so that the change range value of the total broadband receiving power at the current moment relative to the total broadband receiving power calculated at the previous moment of calculating the total broadband receiving power is less than The average value of the broadband received total power in the current time period relative to the variation value of the broadband received total power at the previous moment, the time period is the time period between adjacent moments when the broadband received total power is calculated, and the current time period The time period is a time period including the current moment, and the current moment is the end moment of the current time period; The sending unit is configured to send the total broadband receiving power calculated by the calculating unit to the terminal through a broadcast channel, so that the terminal calculates the open-loop transmitting power according to the total broadband receiving power at the current moment. 9. The base station according to claim 8, wherein the calculation unit calculates the total broadband receiving power at the current moment as: the current moment calculated by the calculation unit through filtering processing every preset time Total broadband receive power. 10. The base station according to claim 9, wherein the calculation unit comprises: The first calculation module is used to calculate by using the first filter factor if the total broadband received power at the current moment is increased relative to the total broadband received power calculated at the previous moment; if the total broadband received power at the current moment is relatively When the total broadband received power calculated at the previous moment decreases, the second filter factor is used for calculation; so that the speed of increase of the total broadband received power calculated by using the first filter factor is less than that obtained by using the second filter factor The speed at which the total broadband received power decreases is obtained by calculating the first filter factor, and the first filter factor is smaller than the second filter factor. 11. The base station according to claim 9, further comprising: A judging unit, configured to judge whether the total broadband receiving power is greater than a preset value; The first modifying unit is configured to reduce the broadcast channel period if the judging unit judges that the total broadband receiving power at the current moment is greater than the preset value; if the judging unit judges that the current If the total broadband receiving power at any moment is less than the preset value, then increase the broadcast channel period; The shorter the period of the broadcast channel, the smaller the time interval for the broadcast channel to transmit the total broadband receiving power at the current moment to the terminal; the larger the period of the broadcast channel, the shorter the broadcast channel transmits the total broadband receiving power at the current moment to the terminal The greater the time interval; the shorter the time interval for the terminal to receive the total broadband receiving power at the current moment; The sending unit is configured to send the total broadband receiving power at the current moment to the terminal through the broadcast channel according to the period of the broadcast channel, so that the terminal calculates the open-loop transmitting power according to the total broadband receiving power at the current moment . 12. The base station according to claim 9 or 10, wherein the calculation unit comprises: An estimation module, configured to estimate whether the total broadband received power at the current moment is greater than the total broadband received power at the previous moment according to a preset method; The second calculation module is used for if the estimation module estimates that the total broadband received power at the current moment is greater than the total broadband received power at the previous moment, then the total broadband received power at the current moment is the broadband received power at the previous moment The total received power plus a first preset value, the value range of the first preset value is greater than 0 and less than the difference between the average value of the broadband received total power in the current time period minus the broadband received total power at the previous moment; The third calculation module is used for if the estimation module estimates that the total broadband received power at the current moment is not greater than the total broadband received power at the previous moment, then the total broadband received power at the current moment is equal to the total broadband received power at the previous moment The total broadband receiving power minus the second preset value, the value range of the second preset value is greater than 0 and less than the difference between the total broadband receiving power at the previous moment and the average value of the total broadband receiving power in the current time period . 13. The base station according to claim 12, wherein the estimation module comprises: An acquisition sub-module, configured to acquire the minimum value of the total broadband received power in the current time period; The judging submodule is used to estimate whether the total broadband receiving power at the current moment is greater than the total broadband receiving power at the previous moment according to whether the minimum value acquired by the acquiring submodule is greater than the total broadband receiving power at the previous moment; If the minimum value is greater than the total broadband received power at the previous moment, the total broadband received power at the current moment is greater than the total broadband received power at the previous moment; If the minimum value is not greater than the total broadband received power at the previous moment, then the total broadband received power at the current moment is not greater than the total broadband received power at the previous moment. 14. The base station according to claim 13, further comprising: The second modifying unit is configured to modify the preset time, so that the modified preset time is shorter than the pre-modified preset time. 15. The base station according to claim 11, wherein the first modifying unit reduces the broadcast channel cycle to: the first modifying unit reduces the value of a specified parameter of the radio network controller Decrease the broadcast channel period; the first modification unit increases the broadcast channel period to: the first modification unit increases the broadcast channel period by increasing the value of the specified parameter of the radio network controller increase; The value of the specified parameter affects the size of the broadcast channel period.