WO2018141189A1

WO2018141189A1 - Method and device for self-adaptively adjusting uplink power parameters

Info

Publication number: WO2018141189A1
Application number: PCT/CN2017/119980
Authority: WO
Inventors: 王阿妮; 池柏祥; 袁泉; 池海祥
Original assignee: 中兴通讯股份有限公司
Priority date: 2017-02-04
Filing date: 2017-12-29
Publication date: 2018-08-09
Also published as: CN108401282A

Abstract

The present invention discloses a method and a device for self-adaptively adjusting uplink power parameters. The method comprises: counting a noise interference (NI) level on a cell bandwidth within a preset period; identifying an interference scene change condition of the cell according to the NI level; adjusting uplink power parameters of a base station according to the interference scene change condition.

Description

Method and device for adaptively adjusting uplink power parameters

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method and apparatus for adaptively adjusting an uplink power parameter.

Background technique

In the LTE system, the uplink channel includes a physical random access channel (Physical Random Access Channel, PRACH), a physical uplink control channel (PUCCH), and a physical uplink shared channel (Physical Uplink Share Channel, PUSCH). . LTE uplink power control has different power control strategies and parameter configuration strategies for these three channels. In general, the base station needs to configure the maximum transmit power to limit the maximum value of the uplink transmit power of the terminal. This value is recorded as Pmax in the LTE system, and the base station needs to separately configure the initial received power and user terminal of the three channels (User Equipment , UE) level power offset, etc. In addition, for PUSCH, it is also necessary to configure a path loss compensation factor.

Currently, the configuration of the uplink power parameters in the LTE system, including the initial received power, the UE-level power offset, and the path loss compensation factor, are mostly configured by an Operation Management Center (OMC) or by a carrier-customized solution. However, in the actual application process, it is difficult to adapt to all interference scenarios. Especially in some extreme interference scenarios (for example, sudden heterogeneous system interference), it is necessary to manually modify these parameters to meet the needs of customers. However, this method of post-adjustment, on the one hand, for the operator, the interference will cause poor performance of the whole network; on the other hand, for the equipment manufacturer, it is necessary to increase the labor cost and maintain the equipment from time to time.

Therefore, it is very necessary to provide an adaptive adjustment of the uplink power parameters depending on the interference.

Summary of the invention

The present invention provides a method and an apparatus for adaptively adjusting an uplink power parameter, which are used to solve the problem that the uplink power parameter in the LTE system in the prior art needs manual maintenance and is not adjusted in time.

According to an aspect of the present invention, a method for adaptively adjusting an uplink power parameter includes: calculating a noise interference NI level on a cell bandwidth in a preset period; and identifying an interference scene change of the cell according to the NI level. And adjusting the uplink power parameter of the base station according to the change of the interference scenario.

According to an aspect of the present invention, an apparatus for adaptively adjusting an uplink power parameter includes: a statistics module, configured to calculate a noise interference NI level on a cell bandwidth in a preset period; and an identification module, configured to perform, according to the NI Levelly identifying an interference scenario change of the cell; and adjusting, configured to adjust an uplink power parameter of the base station according to the change of the interference scenario.

According to an aspect of the invention, there is provided a computer readable storage medium storing a computer program, which, when executed by a processor of a computer, causes the computer to perform adaptive adjustment of an uplink power parameter provided in accordance with the present invention Methods.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is merely some embodiments of the present invention, and those skilled in the art can obtain other drawings according to the drawings without any inventive labor. In the drawing,

1 is a flow chart of a method for adaptively adjusting an uplink power parameter according to an embodiment of the present invention;

2 is a flow chart of a method for identifying a change in an interference scene according to an embodiment of the present invention;

3 is a flowchart of a method for adaptively adjusting an uplink power parameter according to an embodiment of the present invention;

FIG. 4 is a schematic structural block diagram of an apparatus for adaptively adjusting an uplink power parameter according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

1 is a flow chart of a method for adaptively adjusting an uplink power parameter according to an embodiment of the present invention.

As shown in FIG. 1, a method for adaptively adjusting an uplink power parameter according to an embodiment of the present invention may include steps S101 to S103.

In step S101, a Noise and Interference (NI) level on the cell bandwidth is counted in a preset period.

In this step, the statistical NI level refers to the NI level of each resource block (RB) in the Transmission Time Interval (TTI) on the cell bandwidth. Here, the NI level on the cell bandwidth can be counted according to a preset period. For the preset period, it can be set in hours, days or months, and the user can set according to the actual situation. At the beginning of the cycle, all values need to be initialized.

The NI level for the cell bandwidth can be taken as the average value of the NI per RB in the cell idle time, the average value of the NI per RB when the cell is busy, the NI average value in the entire statistical period, the NI maximum value in the cell busy period, or the entire statistical period. The maximum value of NI inside, etc. In the present invention, the value of the NI level is not specifically limited.

According to an embodiment of the present invention, the value of the NI level can be selected according to a specific usage scenario. For example, when it is necessary to detect whether there is any inter-system interference in the cell, the value of the NI level on the cell bandwidth may be the average value of the NI per RB in the cell idle time; when it is necessary to determine the sea surface coverage or the plain-covered atmospheric waveguide interference, the cell The value of the NI level in the bandwidth can take the NI average value over the entire statistical period, and the preset period setting is shorter to facilitate the tracking of the interference; when the need to track the burst interference, the value of the NI level in the cell bandwidth The statistical value of the NI when the cell is busy can be taken.

In step S102, the interference scene change of the cell is identified according to the NI level.

In this step, the interference scene change situation may include three cases where the interference level does not change, the interference level becomes large, and the interference level becomes small.

When the interference scene change of the cell is identified according to the NI level, the difference between the NI level on the cell bandwidth and the historical NI level may be mainly analyzed, and the difference is determined by the preset first threshold and the preset second threshold. Relationship, as shown in Figure 2.

2 is a flow chart of a method of identifying a change in an interference scene, in accordance with an embodiment of the present invention.

When the difference between the NI level on the cell bandwidth and the historical NI level is within a preset interval between the first threshold and the second threshold, it can be determined that the interference level has not changed.

When the difference between the NI level on the cell bandwidth and the historical NI level is less than the minimum value of the preset interval (ie, the first threshold), it can be judged that the interference level becomes small. In this case, the NI level on the cell bandwidth can be recorded.

When the difference between the NI level on the cell bandwidth and the historical NI level is greater than the maximum value of the preset interval (ie, the second threshold), it can be judged that the interference level becomes large. In this case, the NI level on the cell bandwidth can be recorded.

The minimum value of the preset interval (ie, the first threshold) is the difference between the NI preset threshold and the NI preset threshold hysteresis factor, and the maximum value (ie, the second threshold) is the NI preset threshold and the NI preset threshold. The sum of the hysteresis factors.

The historical NI level can be the NI theoretical value or the last statistical cell bandwidth NI level, and its initialization value is the noise floor. For example, when determining whether there is heterogeneous interference in the cell, the historical NI level can select the NI theoretical value; when determining the sea surface coverage or the plain-covered atmospheric waveguide interference, the historical NI level can select the last statistical cell bandwidth NI level, or NI theoretical value; when it is necessary to track burst interference, the historical NI level can select the last measured cell bandwidth NI level.

In step S103, the uplink power parameter of the base station is adjusted according to the change of the interference scenario.

In this step, when the interference level does not change, no adjustment is needed; when the interference level becomes larger or the interference level becomes smaller and the number of consecutive smaller times is greater than a preset threshold, the preset step value may be used or The uplink power parameters are adjusted according to the NI level. The step of obtaining the uplink power parameter to be adjusted and the currently configured uplink power parameter of the base station; calculating the difference between the uplink power parameter to be adjusted and the currently configured uplink power parameter of the base station; and when the difference is greater than a preset threshold At the time, the uplink power parameters of the base station are adjusted.

3 is a flow chart of a method for adaptively adjusting an uplink power parameter in accordance with an embodiment of the present invention.

As shown in FIG. 3, the method for adaptively adjusting an uplink power parameter according to an embodiment of the present invention may include steps S301 to S305.

In step S301, it is determined whether the interference level becomes small. When the interference level becomes small, step S302 is performed; otherwise, step S303 is performed.

In step S302, the number of times the interference is continuously reduced is incremented by one, and it is determined whether the number of times the interference is continuously reduced is greater than a preset threshold. If the threshold is greater than the preset threshold, step S303 is performed; otherwise, the method flow is exited.

In this step, during the period in which it is judged whether or not the NI level is continuously decreased, the history NI level is not updated, and the history NI level is updated only when the number of consecutively smaller times is greater than the preset threshold.

In step S303, the number of times the interference is reduced is cleared, and the value of the uplink power parameter to be adjusted is determined.

In step S304, it is determined whether the difference between the current power parameter to be adjusted and the current configuration of the base station (that is, the amplitude to be adjusted) is greater than a preset threshold (for example, 2 dB), and if it is greater than the preset value, step S305 is performed; otherwise, step S305 is performed; otherwise , the uplink power parameters are not adjusted, and the method flow is exited.

In step S305, the broadcast modification process is started to notify the base station that the uplink power parameters of the other system have been modified and the specific modified values are performed, and the user is notified by the air interface message.

In the embodiment of the present invention, the uplink power parameter mainly refers to the initial received power of the base station on the uplink channel. When the uplink power parameter adjustment is performed, a fixed step size may be adopted, or an adaptive calculation method according to the power control target value may be adopted. For a fixed step size, when the interference becomes large, the initial received power of the base station on the uplink channel can be increased according to the preset step value; when the interference becomes small, the base station can be reduced according to the preset step value. The initial received power of the channel.

According to the embodiment of the present invention, the uplink power parameter of the base station can be adjusted according to the NI level.

The initial configuration of the cell power parameter is required in advance, and the initial configuration can be used for the first adjustment judgment of the uplink power parameter.

Initial configuration of the uplink power parameters of the PRACH generally includes initial reception power and the like. Initial configuration of the uplink power parameters of the PUCCH generally includes initial reception power and terminal power offset. The initial configuration of the uplink power parameter of the PUSCH generally includes an initial received power, a terminal power offset, and a path loss compensation factor of the PUSCH.

According to an embodiment of the present invention, the uplink power parameter in the PUSCH may be adjusted according to the NI level. In this embodiment, the PUSCH power control target value (ie, the number of resource blocks) is N, and the Modulation and Coding Scheme (MCS)=X, for example, MCS2.

The formula (1) for calculating the path loss PL of the terminal to the base station based on the power control target value N and the cell bandwidth NI level is as follows:

PL = Pcmax-10log10 (N) -NIStaVal + 10log10 (AntNum) -DelAntNum- (Sinr MCSX + delta) (1)

Pcmax is the maximum uplink transmit power of the terminal (for example, the default is 23dBm), N is the number of power control target resource blocks, NIStaVal is the cell bandwidth NI level, AntNum is the number of uplink receive antennas, and DelAntNum is the antenna gain conservative amount ( For example, the default is 2dB. The Sinr _MCSX is the target demodulated signal and the signal to interference plus noise ratio (SINR) corresponding to the MCSX used by the LTE system, and the margin of the target demodulated SINR corresponding to the MCSX. (For example, the default is 3dB by default).

Then, the initial received power formula (2) is calculated according to the path loss PL of the terminal to the base station as follows:

P0_NominalPUSCH=Pcmax–alpha*PL-10log10(N)-deltaTPC-P0_UE_PUSCH (2)

Wherein, P0_NominalPUSCH is the calculated initial received power, alpha is the path loss compensation factor configured by the cell; deltaTPC is the compensation amount of the Msg3 power control result (for example, usually defaults to -6dB), and the Msg3 refers to the terminal sending the finger Radio Resource Control (RRC) establishes a request or reestablishment request.

After the initial received power calculation is completed, the initial received power to be adjusted of the base station needs to be determined according to the calculated initial received power P0_Nominal PUSCH and the initial received power specified by the channel transmission protocol.

When the calculated initial received power P0_NominalPUSCH is smaller than the minimum value of the initial received power specified by the channel transmission protocol, the initial received power to be adjusted may be the minimum value specified by the channel transmission protocol. When the calculated initial received power P0_NominalPUSCH is greater than the maximum value of the initial received power specified by the channel transmission protocol, the initial received power to be adjusted may be the maximum value specified by the channel transmission protocol. When the calculated initial received power P0_NominalPUSCH is greater than the minimum value and less than the maximum value, the initial received power to be adjusted may be the calculated initial received power P0_NominalPUSCH.

According to an embodiment of the invention, the uplink power parameter in the PUCCH can be adjusted according to the NI level. In this embodiment, the initial received power of the PUCCH is adaptively adjusted according to the power control target value, as shown in the following formula (3):

_{P0_NominalPUCCH = SINR PUCCH + NIStaVal-P0_UE_PUCCH} -deltaTPC-10log10 (AntNum) + DelAntNum (3)

The P0_NominalPUCCH is the calculated initial received power, the SINR _PUCCH is the target demodulated SINR of the PUCCH, the NIStaVal is the cell bandwidth NI level, the P0_UE_PUCCH is the terminal power offset, and the deltaTPC is the compensation amount of the Msg3 power control result (for example, the default is usually -6dB), AntNum is the number of uplink receiving antennas, and DelAntNum is the antenna gain conservative amount (for example, usually defaults to 2dB).

The initial received power to be adjusted of the base station is determined according to the calculated initial received power P0_NominalPUCCH and the initial received power specified by the channel transmission protocol, and the manner of determining is substantially the same as the manner described in the reference PUSCH, and details are not described herein.

According to an embodiment of the invention, the uplink power parameter in the PRACH can be adjusted according to the NI level. For the power parameter of the PRACH, if the wireless connection rate of the cell is considered, no modification may be made. If the access delay is considered (that is, the calculation is started from the first PRACH), the modification strategy may adopt a fixed step size. It is also possible to adopt an adaptive calculation scheme based on the power control target value. Specifically, the formula (4) for adjusting the initial received power using the power control target value is as follows:

preambleInitialReceivedTargetPower=SINR _PRACH +NIStaVal-10log10(AntNum)+DelAntNum (4)

The preambleInitialReceivedTargetPower is the calculated initial received power, the SINR _PRACH is the detection threshold of the PRACH, the NIStaVal is the cell bandwidth NI level, the AntNum is the uplink receive antenna number, and the DelAntNum is the antenna gain conservative amount (for example, the default is 2 dB by default).

The initial received power to be adjusted of the base station is determined according to the calculated initial received power preambleInitialReceivedTargetPowe and the initial received power specified by the channel transmission protocol, and the manner of determining is substantially the same as the manner described in the reference PUSCH, and details are not described herein.

Whether the PUSCH, the PUCCH, or the PRACH, after determining the initial received power of the channel to be adjusted according to the foregoing method, the initial received power to be adjusted and the initially configured initial received power of the base station (the first time may be the initial configuration value) Comparing, calculating the difference between the initial received power to be adjusted and the currently configured initial received power, and comparing the difference with a preset threshold (eg, 2 dB). When the difference is greater than a preset threshold, the initial received power of the base station needs to be adjusted. If the calculated initial received power is equal to the currently configured initial power or the difference is less than a preset threshold, no reconfiguration of the initial received power is performed.

When the initial receiving power of the base station is adjusted, the broadcast modification process may be started to notify the base station that the uplink power parameters of the other system have been modified and the specific modified values are performed, and the user is notified by the air interface message.

As shown in FIG. 4, the adaptive adjustment uplink power parameter device according to an embodiment of the present invention may include a statistics module 41, an identification module 42, and an adjustment module 43.

The statistics module 41 is configured to count the noise interference NI level on the cell bandwidth in a preset period.

The identification module 42 is configured to identify the interference scene change of the cell according to the NI level.

The adjusting module 43 is configured to adjust an uplink power parameter of the base station according to the change of the interference scenario.

According to an embodiment of the present invention, the NI level counted by the statistic module 41 may be any one of the following: an average value of the RN per cell RB, an average value of the RB per cell RB, and an average value of the NI in a statistical period. The maximum value of the NI when the cell is busy and the maximum value of the NI within a statistical period.

According to an embodiment of the invention, the identification module 42 may be configured to obtain a difference between the NI level and the historical NI level. When the difference is within the preset interval, the identification module 42 may determine that the interference level has not changed. When the difference is less than the minimum value of the preset interval, the identification module 42 may determine that the interference level becomes smaller, and when the difference is greater than the preset When the maximum value of the interval is reached, the identification module 42 can determine that the interference level becomes large.

According to the embodiment of the present invention, when the interference level becomes larger or the interference level becomes smaller and the number of consecutive smaller times is greater than the preset threshold, the adjustment module 43 may adjust the uplink power parameter according to the preset step value or according to the NI level. .

According to an embodiment of the present invention, the adjustment module 43 may be configured to obtain an uplink power parameter to be adjusted and an uplink power parameter currently configured by the base station; and calculate a difference between the uplink power parameter to be adjusted and the currently configured uplink power parameter; When the value is greater than the preset threshold, the adjustment module 43 adjusts the uplink power parameter of the base station according to the uplink power parameter to be adjusted.

According to an embodiment of the invention, the adjustment module 43 may comprise a calculation unit and a determination unit.

The calculation unit is configured to calculate the initial received power of the base station on the uplink channel according to the NI level.

The determining unit is configured to determine an initial received power of the base station to be adjusted according to the calculated initial received power and the initial received power specified by the channel transmission protocol. The initial received power to be adjusted is the uplink power parameter to be adjusted.

According to the embodiment of the present invention, when the calculated initial received power is smaller than the minimum value of the initial received power specified by the channel transmission protocol, the determining unit may set the initial received power to be adjusted to a minimum value of the initial received power specified by the channel transmission protocol; When the calculated initial received power is greater than the maximum value of the initial received power specified by the channel transmission protocol, the determining unit may set the initial received power to be adjusted to the maximum value of the initial received power specified by the channel transmission protocol; and when the calculated initial received power When the value is greater than the minimum value and smaller than the maximum value, the determining unit may set the initial received power to be adjusted to the calculated initial received power.

According to an embodiment of the present invention, when the uplink channel is the PUSCH, the calculating unit may calculate the initial received power P0_NominalPUSCH by using the above formula (1) and formula (2).

According to an embodiment of the present invention, when the uplink channel is a PUCCH, the calculating unit may calculate the initial received power P0_NominalPUCCH by using the above formula (3).

According to an embodiment of the present invention, when the uplink channel is a PRACH, the calculating unit may calculate the initial received power preambleInitialReceivedTargetPower by using the above formula (4).

The method and device for adaptively adjusting an uplink power parameter provided by the present invention can adaptively adjust parameters related to uplink power control when a cell interference scenario changes, and keep the overall uplink performance of the cell from being affected by the interference scene change. Improve user experience under varying interference scenarios. Due to the adaptive adjustment mechanism, the parameters can be adjusted in time when the interference is abrupt, and the entire adjustment process does not require manual operation, which effectively saves the overhead of traditional manual maintenance and reduces the maintenance cost of the enterprise.

The various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments can be referred to each other. For the system embodiment, since it is basically similar to the method embodiment, the relevant parts of the method embodiment can be referred to. Also, the term "comprises", "comprising", or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements but also Other elements not explicitly listed, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

In addition, those skilled in the art can understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned above may be a read only memory, a magnetic disk or an optical disk or the like.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

A method for adaptively adjusting an uplink power parameter includes:

Counting noise on the cell bandwidth to interfere with the NI level during a preset period;

Identifying an interference scenario change of the cell according to the NI level;

Adjusting the uplink power parameter of the base station according to the change of the interference scenario.
The method of claim 1, wherein the NI level is any one of: an average of a cell idle time NI per resource block RB, an average of a cell busy time NI per RB, and a statistical period The NI average, the cell's busy hour NI maximum, and the NI maximum in a statistical period.
The method of claim 1, wherein the step of identifying an interference scene change of the cell according to the NI level comprises:

Obtaining the difference between the NI level and the historical NI level, wherein

When the difference is within a preset interval, it is determined that the interference level has not changed,

When the difference is smaller than a minimum value of the preset interval, it is determined that the interference level becomes small, and

When the difference is greater than the maximum value of the preset interval, it is determined that the interference level becomes large.
The method of claim 3, wherein the step of adjusting an uplink power parameter of the base station according to the change of the interference scenario comprises:

When the interference level becomes larger or the interference level becomes smaller and the number of consecutive smaller times is greater than a preset threshold, the uplink power parameter is adjusted according to a preset step value or according to the NI level.
The method of claim 4, wherein the step of adjusting the uplink power parameter according to a preset step value or according to the NI level comprises:

Obtaining an uplink power parameter to be adjusted;

Obtaining an uplink power parameter of a current configuration of the base station;

Calculating a difference between the uplink power parameter to be adjusted and the currently configured uplink power parameter;

When the difference is greater than the preset threshold, the uplink power parameter of the base station is adjusted according to the uplink power parameter to be adjusted.
The method of claim 5, wherein the step of obtaining an uplink power parameter to be adjusted comprises:

Calculating an initial received power of the base station on the uplink channel according to the NI level;

The initial received power to be adjusted of the base station is determined according to the calculated initial received power and the initial received power specified by the channel transmission protocol, where the initial received power to be adjusted is the uplink power parameter to be adjusted.
The method according to claim 6, wherein the step of determining the initial received power of the base station to be adjusted according to the calculated initial received power and the magnitude of the initial received power specified by the channel transmission protocol comprises:

When the calculated initial received power is less than the minimum value of the initial received power specified by the channel transmission protocol, the initial received power to be adjusted is the minimum value of the initial received power specified by the channel transmission protocol;

When the calculated initial received power is greater than a maximum value of the initial received power specified by the channel transmission protocol, the initial received power to be adjusted is the maximum value of the initial received power specified by the channel transmission protocol;

When the calculated initial received power is greater than the minimum value and less than the maximum value, the initial received power to be adjusted is the calculated initial received power.
The method of claim 6 wherein the step of calculating the initial received power of the base station on the uplink channel based on the NI level comprises:

When the uplink channel is a physical uplink shared channel PUSCH, the formula for calculating the initial received power is:

P0_NominalPUSCH=Pcmax–alpha*PL-10log10(N)-deltaTPC-P0_UE_PUSCH

among them,

PL=Pcmax–10log10(N)–NIStaVal+10log10(AntNum)–DelAntNum–(Sinr MCSX +delta)

Where P0_NominalPUSCH is the calculated initial received power, Pcmax is the terminal uplink maximum transmit power, N is the number of power control target resource blocks, NIStaVal is the cell bandwidth NI level, AntNum is the number of uplink receive antennas, and DelAntNum is the antenna gain conservative amount. Sinr MCSX is the modulation and coding strategy MCSX used in the LTE system. The target demodulated signal and the interference and noise ratio SINR, the delta is the target demodulation SINR margin corresponding to the MCSX, the alpha is the channel loss compensation factor configured by the cell, and the deltaTPC is The compensation amount of the Msg3 power control result, and P0_UE_PUSCH is the terminal power offset.
The method of claim 6 wherein the step of calculating the initial received power of the base station on the uplink channel based on the NI level comprises:

When the uplink channel is a physical uplink control channel PUCCH, the formula for calculating the initial received power is:

P0_NominalPUCCH=SINR PUCCH +NIStaVal-P0_UE_PUCCH-deltaTPC-10log10(AntNum)+DelAntNum

The P0_NominalPUCCH is the calculated initial received power, the SINR PUCCH is the target demodulated signal of the PUCCH and the interference and noise ratio SINR, the NIStaVal is the cell bandwidth NI level, the P0_UE_PUCCH is the terminal power offset, and the deltaTPC is the compensation amount of the Msg3 power control result. AntNum is the number of uplink receiving antennas, and DelAntNum is the antenna gain conservative amount.
The method of claim 6 wherein the step of calculating the initial received power of the base station on the uplink channel based on the NI level comprises:

When the uplink channel is a physical random access channel (PRACH), the formula for calculating the initial received power is:

preambleInitialReceivedTargetPower=SINR PRACH +NIStaVal-10log10(AntNum)+DelAntNum

The preambleInitialReceivedTargetPower is the calculated initial received power, the SINR PRACH is the detection threshold of the PRACH, the NIStaVal is the cell bandwidth NI level, the AntNum is the number of uplink receiving antennas, and the DelAntNum is the antenna gain conservative amount.
A device for adaptively adjusting an uplink power parameter includes:

a statistics module, configured to calculate a noise interference NI level on a cell bandwidth in a preset period;

An identification module, configured to identify, according to the NI level, an interference scenario change of the cell;

The adjusting module is configured to adjust an uplink power parameter of the base station according to the change of the interference scenario.
The apparatus according to claim 11, wherein the statistical level of the statistical module is any one of the following: an average value of the resource idle time NI per resource block RB, an average value of the NI per RB when the cell is busy, and one The NI average over the statistical period, the cell's busy hour NI maximum, and the NI maximum in one statistical period.
The apparatus of claim 11 wherein said identification module is configured to:

Obtaining the difference between the NI level and the historical NI level, wherein

When the difference is within a preset interval, the identification module determines that the interference level has not changed,

When the difference is less than a minimum value of the preset interval, the identification module determines that the interference level becomes smaller, and

When the difference is greater than a maximum value of the preset interval, the identification module determines that the interference level becomes large.
The apparatus of claim 13 wherein said adjustment module is configured to:

When the interference level becomes larger or the interference level becomes smaller and the number of consecutive smaller times is greater than a preset threshold, the adjustment module compares the uplink power parameter according to a preset step value or according to the NI level. Make adjustments.
The apparatus of claim 13 wherein said adjustment module is configured to:

Obtaining an uplink power parameter to be adjusted and an uplink power parameter currently configured by the base station;

Calculating a difference between the uplink power parameter to be adjusted and the currently configured uplink power parameter;

When the difference is greater than the preset threshold, the adjusting module adjusts the uplink power parameter of the base station according to the uplink power parameter to be adjusted.
The apparatus of claim 15 wherein said adjustment module comprises:

a calculating unit, configured to calculate, according to the NI level, an initial received power of the base station on the uplink channel;

a determining unit, configured to determine an initial received power to be adjusted of the base station according to the calculated initial received power and a size of the initial received power specified by the channel transmission protocol, where the initial received power to be adjusted is the uplink power parameter to be adjusted .
The apparatus of claim 16 wherein said determining unit is configured to:

When the calculated initial received power is less than the minimum value of the initial received power specified by the channel transmission protocol, the determining unit sets the initial received power to be adjusted to the minimum value of the initial received power specified by the channel transmission protocol,

When the calculated initial received power is greater than the maximum value of the initial received power specified by the channel transmission protocol, the determining unit sets the initial received power to be adjusted to the maximum value of the initial received power specified by the channel transmission protocol,

When the calculated initial received power is greater than the minimum value and less than the maximum value, the determining unit sets an initial received power to be adjusted to the calculated initial received power.
The apparatus of claim 16 wherein said computing unit is configured to:

When the uplink channel is a physical uplink shared channel PUSCH, the calculating unit calculates the initial received power by using the following formula:

P0_NominalPUSCH=Pcmax–alpha*PL-10log10(N)-deltaTPC-P0_UE_PUSCH

among them,

PL=Pcmax–10log10(N)–NIStaVal+10log10(AntNum)–DelAntNum–(Sinr MCSX +delta)

Where P0_NominalPUSCH is the calculated initial received power, Pcmax is the terminal uplink maximum transmit power, N is the number of power control target resource blocks, NIStaVal is the cell bandwidth NI level, AntNum is the number of uplink receive antennas, and DelAntNum is the antenna gain conservative amount. Sinr MCSX is the modulation and coding strategy MCSX used in the LTE system. The target demodulated signal and the interference and noise ratio SINR, the delta is the target demodulation SINR margin corresponding to the MCSX, the alpha is the channel loss compensation factor configured by the cell, and the deltaTPC is The compensation amount of the Msg3 power control result, and P0_UE_PUSCH is the terminal power offset.
The apparatus of claim 16 wherein said computing unit is configured to:

When the uplink channel is a physical uplink control channel PUCCH, the calculating unit calculates the initial received power by using the following formula:

P0_NominalPUCCH=SINR PUCCH +NIStaVal-P0_UE_PUCCH-deltaTPC-10log10(AntNum)+DelAntNum

Wherein the amount of compensation, P0_NominalPUCCH initial reception power calculation, SINR PUCCH demodulation target signal to interference and noise ratio PUCCH SINR, NIStaVal NI level of cell bandwidth, P0_UE_PUCCH terminal power offset, deltaTPC power control results for the Msg3 AntNum is the number of uplink receiving antennas, and DelAntNum is the antenna gain conservative amount.
The apparatus of claim 16 wherein said computing unit is configured to:

When the uplink channel is a physical random access channel (PRACH), the calculating unit calculates the initial received power by using the following formula:

preambleInitialReceivedTargetPower=SINR PRACH +NIStaVal-10log10(AntNum)+DelAntNum

Wherein, preambleInitialReceivedTargetPower initial reception power calculation, the SINR PRACH detection threshold of the PRACH, NIStaVal NI level of cell bandwidth, AntNum uplink receiving antennas, and the antenna gain DelAntNum conserved quantity.