WO2014100995A1

WO2014100995A1 - Power control method for common e-dch and base station

Info

Publication number: WO2014100995A1
Application number: PCT/CN2012/087504
Authority: WO
Inventors: 殷春; 魏宗坤
Original assignee: 华为技术有限公司
Priority date: 2012-12-26
Filing date: 2012-12-26
Publication date: 2014-07-03
Also published as: CN104081835A

Abstract

The present invention relates to the field of communications. Provided are a power control method for a common E-DCH and a base station. The method comprises: a base station calculating a signal interference ratio (SIR) estimated value of a Common E-DCH in a current adjustment period; the base station acquiring an SIR target value of the Common E-DCH in the current adjustment period according to an SIR target value of the Common E-DCH in a previous adjustment period and a decoding performance index of the Common E-DCH in the current adjustment period; the base station comparing the SIR estimated value in the current adjustment period with the SIR target value in the current adjustment period, and setting an inner-loop power control command according to a comparison result; and the base station sending the inner-loop power control command to a user equipment (UE), to instruct the UE to adjust a transmit power. The present invention achieves long-time stability of the Common E-DCH, expands an applicable service range of the Common E-DCH, and reduces a bit error rate of the Common E-DCH, so that the Common E-DCH is more stable, accurate control of the transmit power of the UE is achieved, interference between users and increase of cell load are reduced, and QoS requirements of users of different types can be met; and the SIR target value for inner-loop power control of the Common E-DCH of the user can more accurately reflect the decoding performance of the channel.

Description

Power control method and base station for common E-DCH channel

Technical field

The present invention relates to the field of communications, and in particular, to a power control method and a base station for a common E-DCH channel.

Background technique

WCDMA (Wideband Code Division Multiple) In the Access, Wideband Code Division Multiple Access system, in order to improve the speed and quality of uplink data transmission, the UE (User Equipment) is reduced in data transmission from CELL-FACH ( CELL-Forward Access Channel, cell forward access channel) to CELL-DCH (CELL-Dedicated Channel, cell-specific channel) probability of migration, ie reducing UE usage power, and better supporting the increasing demand for new smartphone services, in 3GPP R8 (3rd generation The CELL-FACH enhancement was introduced in the partnership project-Release-8, Third Generation Partnership Program R8). E-RACH (Enhanced Random Access Channel, enhanced random access channel) is an enhancement of uplink access in CELL-FACH enhanced mode. The basic idea is to reserve a part of E-DCH (Enhanced) which is originally a dedicated channel. Dedicated Channel, which is used as a common channel of a cell to replace the previous message channel. These common E-DCH channels are called Common. E-DCH (Common E-DCH Channel). E-RACH supports uplink CCCH (Common Control Channel)/DCCH (Dedicated) Control Channel, dedicated control channel) / DTCH (Dedicated Transport Channel, dedicated transport channel), using E-DCH channel for transmission. E-DCH channel overcomes RACH (Random Access Channel, random access channel) The short message time and low transmission rate of the message channel in the access mode can support higher uplink data transmission speed and longer access time of data transmission, thus enabling users to use CELL. - The same data transmission quality as the CELL-DCH state is achieved in the -FACH state.

As a self-interference system, the WCDMA system must implement strict power control, otherwise the system cannot operate stably. The WCDMA system only performs inner loop power control on the uplink common channel, and the inner loop power control refers to the SIR (Signal) of the dedicated channel calculated by the NodeB (WCDAM base station) according to each time slot. Interference Ratio, estimated value, and calculated real-time SIR estimate and RNC (Radio Network The SIR target values sent by the Controller and the radio network controller are compared, and the UE is quickly determined whether to raise the transmit power or decrease the transmit power according to the comparison result.

Common in E-RACH mode The E-DCH channel is still logically a common channel. In terms of establishment, Common The E-DCH channel is used as a common channel, which is driven by the NodeB according to the user's access information, and the dedicated E-DCH channel is initiated and deleted by the RNC. Therefore, the RNC does not know the Common in the cell. Information on the presence or absence of the E-DCH channel. Based on this, in the power control, the existing technical solution and the 3GPP protocol still use the conventional power control scheme for the common channel for the Common E-DCH channel, that is, only Common. The E-DCH channel is used for inner loop power control. The approach is: when the cell is configured, all the Commons in the cell are owned by the RNC. The E-DCH channel is uniformly configured with a fixed initial SIR target value. NODEB according to Common The real-time SIR value of the E-DCH channel is compared with the initial SIR target value to quickly determine whether the UE is raising the transmit power or decreasing the transmit power. In Common The SIR target value is not adjusted during the entire period in which the E-DCH exists.

Therefore, the power control method of the prior art Common E-DCH channel has the following disadvantages:

1) Common with only inner loop power control The E-DCH channel is only suitable for short-lived channels, such as tens of milliseconds, which does not reflect the advantages of the Common E-DCH relative message channel, and also limits Common. The service scope of the E-DCH channel.

2) For Common The E-DCH channel can exist for a long time. The channel environment may change randomly. The user may also be in motion. For these slow-fading channel environment changes, if only the inner loop power control is used, the SIR target value is not adjusted. May cause Common The E-DCH has a high bit error rate, which may cause probabilistic channel out of synchronization.

3) Different UEs in Common The data rate transmitted on the E-DCH channel may be different, so setting a uniform SIR target value is not conducive to accurate control of the UE transmit power.

4) Setting a uniform static SIR target value, the initial SIR target value is also difficult to determine, because the initial SIR target value may be unstable if set too low; if the initial SIR target value is set too high, the user is larger than The necessary power to transmit data causes excessive user interference in the cell.

5) Comparing the SIR values cannot and does not actually reflect the demodulation and decoding performance of the channel. For example, if the channel environment is bad, a high SIR value does not necessarily ensure that the channel's bit error rate is low. The inner loop power control of the WCDMA system is to maintain a certain signal to interference ratio when the power of the transmitted signal reaches the receiving end. However, in different multipath environments, even if the average signal-to-interference ratio is kept above a certain threshold, the communication quality requirements may not be met (BER (Bit). Error Ratio, BBER (Block Error Ratio), HARQ (Hybrid Autonomous) Request, hybrid adaptive retransmission) retransmission rate, etc.). Due to the complexity of the wireless channel, power control based only on the SIR value does not really reflect the link quality, such as stationary users, low-speed users, and high-speed users, while guaranteeing the same QoS ( Under Quality of Service, the requirements for SIR are different.

technical problem

The embodiment of the invention provides a power control method for a common E-DCH channel, which aims to solve the limitation of the prior art to Common. The service scope of the E-DCH channel may cause Common The E-DCH has a high bit error rate. In severe cases, it may cause probabilistic channel out-of-synchronization, which is not conducive to accurate control of the UE transmit power. It is difficult to determine the initial SIR target value and the problem that the channel demodulation and decoding performance cannot be actually reflected.

Technical solution

In one aspect, a power control method for a common E-DCH channel is provided, the method comprising:

The base station calculates a signal to interference ratio SIR estimation value of a current adjustment period of the Common E-DCH channel;

The base station according to the SIR target value of the previous adjustment period of the Common E-DCH channel and the Common Decoding performance indicator of a current adjustment period of the E-DCH channel, obtaining an SIR target value of a current adjustment period of the Common E-DCH channel;

The base station compares the SIR estimation value of the current adjustment period with the SIR target value of the current adjustment period, and sets an inner loop power control command according to the comparison result;

The base station sends the inner loop power control command to the user equipment UE to instruct the UE to adjust the transmit power.

The decoding performance indicator is a HARQ retransmission rate; the base station is according to the Common Obtaining the common performance index of the SIR target value of the previous adjustment period of the E-DCH channel and the current adjustment period of the Common E-DCH channel, obtaining the Common The SIR target values of the current adjustment period of the E-DCH channel include:

Counting the common in the current adjustment period The HARQ retransmission rate of the E-DCH channel, obtaining the sum of the HARQ retransmission rates;

When the sum of the HARQ retransmission rates > At the target HARQ retransmission rate, the SIR target value of the current adjustment period is obtained by adjusting the SIR target value of the previous adjustment period upward; or, when the HARQ retransmission rate is <= At the target HARQ retransmission rate, the SIR target value of the current adjustment period is obtained by adjusting the SIR target value of the previous adjustment period downward.

The SIR target value obtained by adjusting the SIR target value of the previous adjustment period to obtain the current adjustment period is specifically:

SIR target value of the current adjustment period = SIR target value of the previous adjustment period + Step value of SIR up adjustment;

If the calculated SIR target value of the current adjustment period is greater than the preset SIR target value upper limit value, the SIR target value of the current adjustment period is adjusted to a preset SIR target value upper limit value.

SIR target value of the current adjustment period = SIR target value of the previous adjustment period - The step value of the SIR downward adjustment;

If the calculated SIR target value of the current adjustment period is less than the preset SIR target value lower limit value, the SIR target value of the current adjustment period is adjusted to a preset SIR target value lower limit value.

In another aspect, a base station is provided, the base station comprising:

a first calculation module for calculating a common enhanced dedicated channel Common a signal to interference ratio SIR estimate of the current adjustment period of the E-DCH channel;

a second calculation module for rooting the Common Obtaining the common data of the E-DCH channel according to the SIR target value of the previous adjustment period and the decoding performance index of the current adjustment period of the Common E-DCH channel The SIR target value of the current adjustment period of the E-DCH channel;

a comparison module, configured to compare an SIR estimation value of the current adjustment period with an SIR target value of the current adjustment period;

a setting module, configured to set an inner loop power control command according to the comparison result;

And a sending module, configured to send the inner loop power control command to the user equipment UE, to instruct the UE to adjust the transmit power.

The decoding performance indicator is a HARQ retransmission rate; the second calculation module specifically includes:

a statistics module, configured to count the common in the current adjustment period The HARQ retransmission rate of the E-DCH channel, obtaining the sum of the HARQ retransmission rates;

An adjustment module for when the sum of the HARQ retransmission rates > At the target HARQ retransmission rate, the SIR target value of the current adjustment period is obtained by adjusting the SIR target value of the previous adjustment period upward; or, when the HARQ retransmission rate is <= At the target HARQ retransmission rate, the SIR target value of the current adjustment period is obtained by adjusting the SIR target value of the previous adjustment period downward.

If the calculated SIR target value of the current adjustment period is greater than a preset SIR target value upper limit value, the SIR target value of the current adjustment period is adjusted to a preset SIR target value upper limit value. .

In a further aspect, a base station is provided, the base station comprising:

a processor for executing a program;

Memory for storing programs; and

a transmitter, configured to send an inner loop power control command to the user equipment UE, to instruct the UE to adjust the transmit power;

When the base station is running, the processor is configured to execute a program stored in the memory such that the base station performs the following method:

Calculate the public enhanced dedicated channel Common a signal to interference ratio SIR estimation value of a current adjustment period of the E-DCH channel; an SIR target value according to a previous adjustment period of the Common E-DCH channel and the Common Decoding performance indicator of a current adjustment period of the E-DCH channel, obtaining an SIR target value of a current adjustment period of the Common E-DCH channel;

Comparing the SIR estimation value of the current adjustment period with the SIR target value of the current adjustment period, and setting the inner loop power control command according to the comparison result.

The decoding performance indicator is a HARQ retransmission rate; the according to the Common Obtaining the common performance index of the SIR target value of the previous adjustment period of the E-DCH channel and the current adjustment period of the Common E-DCH channel, obtaining the Common The SIR target values of the current adjustment period of the E-DCH channel include:

Counting the Common in the current SIR target value adjustment period The HARQ retransmission rate of the E-DCH channel, obtaining the sum of the HARQ retransmission rates;

Beneficial effect

In the embodiment of the present invention, the base station according to the SIR target value of the previous adjustment period and Common The decoding performance indicator of the current adjustment period of the E-DCH channel obtains the SIR target value of the current adjustment period of the Common E-DCH channel, and thus the public provided by the embodiment of the present invention The power control method and base station of the E-DCH channel have the following beneficial effects:

(1) The Common E-DCH channel can be stabilized for a long time, and Common is expanded. The E-DCH channel is applicable to the service range;

(2) due to the Common During the E-DCH channel existence time, even if the user's channel environment changes during this period, the Common E-DCH channel decoding performance index can be adaptively adjusted to dynamically adjust Common. The SIR target value of the E-DCH channel, thereby reducing the Common E-DCH error rate and making the Common E-DCH channel more stable;

(3) due to each Common according to The decoding performance index of the E-DCH channel and the SIR target value of the previous SIR target value adjustment period respectively set an accurate SIR target value for each user, thereby facilitating accurate control of the UE transmit power and reducing inter-user interference. And cell load uplift;

(4) Since the HARQ retransmission rate can more accurately reflect the link quality, it can meet the QoS requirements of different types of users, such as stationary users, low-speed users and high-speed users;

(5) Make the user Common The SIR target value of the inner loop power control of the E-DCH channel more accurately reflects the decoding performance of the channel.

DRAWINGS

FIG. 1 is a flowchart of a power control method of a Common E-DCH channel according to Embodiment 1 of the present invention.

2 is a functional block diagram of a base station according to Embodiment 2 of the present invention.

FIG. 3 is a functional block diagram of a base station according to Embodiment 3 of the present invention.

4 is a flow diagram of a method for a base station to execute a program stored in a memory when the base station is running.

Embodiments of the invention

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Embodiment 1:

Referring to FIG. 1, a power control method for a Common E-DCH channel according to Embodiment 1 of the present invention includes the following steps:

S101. The base station calculates an SIR estimation value of a current adjustment period of the Common E-DCH channel.

Wherein, the base station may be a NodeB, or other includes a Common A base station in the network standard of the E-DCH channel.

S102. The base station according to the SIR target value of the previous adjustment period of the Common E-DCH channel and the Common The decoding performance indicator of the current adjustment period of the E-DCH channel obtains the SIR target value of the current adjustment period of the Common E-DCH channel.

In the first embodiment of the present invention, the base station calculates Common The SIR estimation value of the current adjustment period of the E-DCH channel is specifically: the base station calculates an SIR estimation value of the current adjustment period of the Common E-DCH channel in each time slot.

In the first embodiment of the present invention, the SIR target value of the previous adjustment period is the SIR target value adjacent to the previous adjustment period of the current adjustment period. The SIR target value of the first SIR target value adjustment period is an initial SIR target value, and the initial SIR target value is configured from the RNC to the base station by the physical shared channel reconfiguration signaling when the cell is established, or is directly set in the base station. of.

In the first embodiment of the present invention, the decoding performance indicator is a HARQ retransmission rate, and the base station according to Common The SIR target value of the previous adjustment period of the E-DCH channel and the decoding performance index of the current adjustment period of the Common E-DCH channel are obtained by Common. The SIR target values of the current adjustment period of the E-DCH channel include:

In the current adjustment cycle, statistics Common The HARQ retransmission rate of the E-DCH channel, obtaining the sum of the HARQ retransmission rates;

When the sum of HARQ retransmission rates in the adjustment period > When the target HARQ retransmission rate is obtained, the SIR target value of the current adjustment period is obtained by adjusting the SIR target value of the previous adjustment period upward, specifically:

SIR target value of the current adjustment period = SIR target value of the previous adjustment period + step value of the SIR upward adjustment;

When the HARQ retransmission rate in the adjustment period is <= When the target HARQ retransmission rate is obtained, the SIR target value of the current adjustment period is obtained by adjusting the SIR target value of the previous adjustment period downward, specifically:

S103, the base station will be Common The SIR estimation value of the current adjustment period of the E-DCH channel is compared with the SIR target value of the current adjustment period, and the inner loop power control command is set according to the comparison result.

In the first embodiment of the present invention, if the comparison result is that the SIR estimation value is greater than the SIR target value, the base station will use the inner loop power control command TPC (Transmit Power). Control, Transmit Power Control) is set to "0". If the comparison result is that the SIR estimate is less than or equal to the SIR target value, the base station sets the inner loop power control command TPC to "1".

S104. The base station sends an inner loop power control command to the UE, to instruct the UE to adjust the transmit power.

In the first embodiment of the present invention, step S104 is specifically: the base station passes the downlink DPCCH (Dedicated Physical The Control Channel, the dedicated physical control channel, transmits an inner loop power control command to the UE to indicate whether the UE is raising the transmit power or decreasing the transmit power.

In the first embodiment of the present invention, if the inner loop power control command TPC is “0”, the UE is instructed to drop the transmit power. If the inner loop power control command TPC is “1”, the UE is instructed to raise the transmit power.

Embodiment 1 of the present invention is due to the SIR target value of the base station according to the previous adjustment period and Common. The decoding performance index of the current adjustment period of the E-DCH channel is obtained as the SIR target value of the current adjustment period of the Common E-DCH channel. Therefore, the Common provided by the first embodiment of the present invention is used. The power control method of the E-DCH channel has the following beneficial effects:

Embodiment 2:

Referring to FIG. 2, the base station provided in Embodiment 2 of the present invention includes: a first calculation module 11, a second calculation module 12, a comparison module 13, a setting module 14, and a sending module 15, as follows.

The first calculating module 11 is configured to calculate an SIR estimation value of a current adjustment period of the Common E-DCH channel.

In the second embodiment of the present invention, the first calculating module 11 is specifically configured to calculate Common in each time slot. The SIR estimate of the current adjustment period of the E-DCH channel.

a second calculating module 12, configured to use an SIR target value and Common according to a previous adjustment period of the Common E-DCH channel The decoding performance indicator of the current adjustment period of the E-DCH channel obtains the SIR target value of the current adjustment period of the Common E-DCH channel.

The SIR target value of the previous adjustment period is the SIR target value of the previous adjustment period adjacent to the current adjustment period. The SIR target value of the first SIR target value adjustment period is an initial SIR target value, and the initial SIR target value is configured from the RNC to the base station by the physical shared channel reconfiguration signaling when the cell is established, or is directly set in the base station. of.

The comparison module 13 is configured to compare the SIR estimation value of the current adjustment period calculated by the first calculation module 11 with the SIR target value of the current adjustment period obtained by the second calculation module 12.

The setting module 14 is configured to set an inner loop power control command according to the comparison result of the comparison module 13.

The sending module 15 is configured to send an inner loop power control command set by the setting module 14 to the UE, to instruct the UE to adjust the transmit power.

In the second embodiment of the present invention, the sending module 15 is specifically configured to send an inner loop power control command to the UE by using a downlink DPCCH channel to indicate whether the UE is to raise the transmit power or decrease the transmit power. If the inner loop power control command TPC is “0”, the UE is instructed to drop the transmit power. If the inner loop power control command TPC is “1”, the UE is instructed to raise the transmit power.

In the second embodiment of the present invention, the decoding performance indicator is a HARQ retransmission rate, and the second computing module 12 specifically includes: a statistics module 121 and an adjustment module 122, where

The statistics module 121 is configured to count Common in the current adjustment period. The HARQ retransmission rate of the E-DCH channel, obtaining the sum of the HARQ retransmission rates;

The adjustment module 122 is configured to calculate a sum of HARQ retransmission rates obtained by the module 121. At the target HARQ retransmission rate, the SIR target value of the current adjustment period is obtained by adjusting the SIR target value of the previous adjustment period upward; or, the sum of the HARQ retransmission rates obtained by the statistics module 121 <= At the target HARQ retransmission rate, the SIR target value of the current adjustment period is obtained by adjusting the SIR target value of the previous adjustment period downward.

Optionally, the adjusting module 122 is specifically configured to:

The sum of the HARQ retransmission rates obtained by the statistics module 121 > At the target HARQ retransmission rate, the SIR target value of the current adjustment period = the SIR target value of the previous adjustment period + the step value of the SIR upward adjustment;

Optionally, the adjusting module 122 is specifically configured to:

The sum of the HARQ retransmission rates obtained by the statistics module 121 <= At the target HARQ retransmission rate, the SIR target value of the current adjustment period = the SIR target value of the previous adjustment period - the step value of the SIR downward adjustment;

Optionally, the setting module 14 is specifically configured to:

If the comparison result is that the SIR estimation value is greater than the SIR target value, the inner loop power control command is set to “0”. If the comparison result is that the SIR estimation value is less than or equal to the SIR target value, the inner loop power control command TPC is set to “1”. .

Embodiment 2 of the present invention is due to the SIR target value of the base station according to the previous adjustment period and Common Decoding performance index of the current adjustment period of the E-DCH channel, obtained by Common The SIR target value of the current adjustment period of the E-DCH channel, so the base station provided in Embodiment 2 of the present invention has the following beneficial effects:

Embodiment 3:

Referring to FIG. 3, a base station according to Embodiment 3 of the present invention includes: a processor 21, a memory 22, and a transmitter 23. among them,

The processor 21 is configured to execute a program.

In the third embodiment of the present invention, the program may include program code, and the program code includes computer operation instructions.

The processor 21 may be a central processing unit CPU or a specific integrated circuit ASIC (Application) Specific Integrated Circuit), or one or more integrated circuits configured to implement embodiments of the present invention.

The memory 22 is used to store a program.

Memory 22 may include high speed RAM memory and may also include non-volatile memory (non-volatile memory) Memory).

The transmitter 23 is configured to send an inner loop power control command to the UE to instruct the UE to adjust the transmit power.

In the third embodiment of the present invention, the transmitter 23 is specifically configured to send an inner loop power control command to the UE through the downlink DPCCH channel to indicate whether the UE is to raise the transmit power or decrease the transmit power.

In the third embodiment of the present invention, if the inner loop power control command TPC is “0”, the UE is instructed to drop the transmit power. If the inner loop power control command TPC is “1”, the UE is instructed to raise the transmit power.

Referring to FIG. 4, when the base station is running, the processor 21 is configured to execute a program stored in the memory 22 to cause the base station to perform the following method:

S201. Calculate an SIR estimation value of a current adjustment period of the Common E-DCH channel.

S202. SIR target value according to a previous adjustment period of the Common E-DCH channel and Common The decoding performance indicator of the current adjustment period of the E-DCH channel obtains the SIR target value of the current adjustment period of the Common E-DCH channel.

In the third embodiment of the present invention, Common is calculated. The SIR estimation value of the current adjustment period of the E-DCH channel is specifically: calculating an SIR estimation value of a current adjustment period of the Common E-DCH channel in each time slot;

In the third embodiment of the present invention, the SIR target value of the previous adjustment period is the SIR target value of the previous adjustment period adjacent to the current adjustment period. The SIR target value of the first SIR target value adjustment period is an initial SIR target value, and the initial SIR target value is configured from the RNC to the base station by the physical shared channel reconfiguration signaling when the cell is established, or is directly set in the base station. of.

In the third embodiment of the present invention, the decoding performance indicator is a HARQ retransmission rate, according to Common. The SIR target value of the previous adjustment period of the E-DCH channel and the decoding performance index of the current adjustment period of the Common E-DCH channel are obtained by Common. The SIR target values of the current adjustment period of the E-DCH channel include:

S203. SIR estimation value of the current adjustment period of the Common E-DCH channel and Common The SIR target values of the current adjustment period of the E-DCH channel are compared, and an inner loop power control command is set according to the comparison result.

In the third embodiment of the present invention, step S203 is specifically: if the comparison result is that the SIR estimation value is greater than the SIR target value, the inner loop power control command TPC (Transmit Power) Control, Transmit Power Control) is set to "0". If the comparison result is that the SIR estimate is less than or equal to the SIR target value, the inner loop power control command TPC is set to "1".

In the foregoing device embodiments, the included units are only divided according to functional logic, but are not limited to the above-mentioned divisions, as long as the corresponding functions can be implemented; in addition, the specific names of the functional units are only for mutual convenience. The distinction is not intended to limit the scope of the invention.

A person skilled in the art can understand that all or part of the steps in the method provided by the embodiment of the present invention can be completed by using related hardware of the program instruction. For example, it can be done by running a program on a computer. The program can be stored in a readable storage medium such as a random access memory, a magnetic disk, an optical disk, or the like.

Claims

A power control method for a common enhanced dedicated channel Common E-DCH channel, the method comprising:

The base station calculates a signal to interference ratio SIR estimation value of a current adjustment period of the Common E-DCH channel;

The base station according to the SIR target value of the previous adjustment period of the Common E-DCH channel and the Common Decoding performance indicator of a current adjustment period of the E-DCH channel, obtaining an SIR target value of a current adjustment period of the Common E-DCH channel;

The base station compares the SIR estimation value of the current adjustment period with the SIR target value of the current adjustment period, and sets an inner loop power control command according to the comparison result;

The base station sends the inner loop power control command to the user equipment UE to instruct the UE to adjust the transmit power.
The method according to claim 1, wherein said decoding performance indicator is a hybrid adaptive retransmission HARQ retransmission rate; said base station according to said Common Obtaining the common performance index of the SIR target value of the previous adjustment period of the E-DCH channel and the current adjustment period of the Common E-DCH channel, obtaining the Common The SIR target values of the current adjustment period of the E-DCH channel include:

Counting the common in the current adjustment period The HARQ retransmission rate of the E-DCH channel, obtaining the sum of the HARQ retransmission rates;

When the sum of the HARQ retransmission rates > When the target HARQ retransmission rate is obtained, the SIR target value of the current adjustment period is obtained by adjusting the SIR target value of the previous adjustment period upward; or

When the sum of the HARQ retransmission rates <= At the target HARQ retransmission rate, the SIR target value of the current adjustment period is obtained by adjusting the SIR target value of the previous adjustment period downward.
The method according to claim 2, wherein the SIR target value obtained by adjusting the SIR target value of the previous adjustment period to obtain the current adjustment period is specifically:

The SIR target value of the current adjustment period = the SIR target value of the previous adjustment period + the step value of the SIR upward adjustment;

If the calculated SIR target value of the current adjustment period is greater than the preset SIR target value upper limit value, the SIR target value of the current adjustment period is adjusted to a preset SIR target value upper limit value.
The method according to claim 2, wherein the SIR target value obtained by adjusting the SIR target value of the previous adjustment period to obtain the current adjustment period is specifically:

The SIR target value of the current adjustment period = the SIR target value of the previous adjustment period - the step value of the SIR downward adjustment;

If the calculated SIR target value of the current adjustment period is less than the preset SIR target value lower limit value, the SIR target value of the current adjustment period is adjusted to a preset SIR target value lower limit value.
The method according to any one of claims 1 to 4, wherein the SIR target value of the previous adjustment period is an SIR target value adjacent to the previous adjustment period of the current adjustment period.
The method according to claim 1, wherein the base station sends the inner loop power control command to the user equipment UE to indicate that the UE adjusts the transmission power, specifically:

And transmitting, by the base station, the inner loop power control command to the UE by using a downlink dedicated physical control channel DPCCH channel, to indicate whether the UE is raised transmit power or decreased transmit power.
A base station, the base station includes:

a first calculation module for calculating a common enhanced dedicated channel Common a signal to interference ratio SIR estimate of the current adjustment period of the E-DCH channel;

a second calculating module, configured to use an SIR target value according to a previous adjustment period of the Common E-DCH channel and the Common Decoding performance indicator of a current adjustment period of the E-DCH channel, obtaining an SIR target value of a current adjustment period of the Common E-DCH channel;

a comparison module, configured to compare an SIR estimation value of a current adjustment period calculated by the first calculation module with an SIR target value of a current adjustment period obtained by the second calculation module;

a setting module, configured to set an inner loop power control command according to the comparison result of the comparison module;

And a sending module, configured to send the inner loop power control command set by the setting module to the user equipment UE, to indicate that the UE is to adjust transmit power.
The base station according to claim 7, wherein the decoding performance indicator is a hybrid adaptive retransmission HARQ retransmission rate; and the second computing module comprises:

a statistics module, configured to count the common in the current adjustment period The HARQ retransmission rate of the E-DCH channel, obtaining the sum of the HARQ retransmission rates;

An adjustment module for summing HARQ retransmission rates obtained by the statistical module > At the target HARQ retransmission rate, the SIR target value of the current adjustment period is obtained by adjusting the SIR target value of the previous adjustment period upward; or the sum of the HARQ retransmission rates obtained by the statistic module <= At the target HARQ retransmission rate, the SIR target value of the current adjustment period is obtained by adjusting the SIR target value of the previous adjustment period downward.
The base station according to claim 8, wherein the adjustment module is specifically configured to:

When the sum of the HARQ retransmission rates obtained by the statistics module > the target HARQ retransmission rate, the SIR target value of the current adjustment period = The SIR target value of the previous adjustment period + the step value of the SIR upward adjustment;

If the calculated SIR target value of the current adjustment period is greater than the preset SIR target value upper limit value, the SIR target value of the current adjustment period is adjusted to a preset SIR target value upper limit value.
The base station according to claim 8, wherein the adjustment module is specifically configured to:

When the sum of the HARQ retransmission rates obtained by the statistics module <= the target HARQ retransmission rate, the SIR target value of the current adjustment period = The SIR target value of the previous adjustment period - the step value of the SIR downward adjustment;

If the calculated SIR target value of the current adjustment period is less than the preset SIR target value lower limit value, the SIR target value of the current adjustment period is adjusted to a preset SIR target value lower limit value.
The base station according to any one of claims 7 to 10, wherein the SIR target value of the previous adjustment period is an SIR target value adjacent to the previous adjustment period of the current adjustment period.
The base station according to claim 7, wherein the sending module is configured to send an inner loop power control command set by the setting module to the UE by using a downlink dedicated physical control channel (DPCCH channel) to indicate the Whether the UE raises the transmit power or decreases the transmit power.
A base station, the base station includes:

a processor for executing a program;

Memory for storing programs; and

a transmitter, configured to send an inner loop power control command to the user equipment UE, to instruct the UE to adjust the transmit power;

When the base station is running, the processor is configured to execute a program stored in the memory such that the base station performs the following method:

Calculating a signal to interference ratio SIR estimation value of a current adjustment period of a common enhanced dedicated channel Common E-DCH channel;

An SIR target value according to a previous adjustment period of the Common E-DCH channel and the Common Decoding performance indicator of a current adjustment period of the E-DCH channel, obtaining an SIR target value of a current adjustment period of the Common E-DCH channel;

Comparing the SIR estimation value of the current adjustment period with the SIR target value of the current adjustment period, and setting the inner loop power control command according to the comparison result.
The base station according to claim 13, wherein said decoding performance indicator is a hybrid adaptive retransmission HARQ retransmission rate; said according to said Common Obtaining the common performance index of the SIR target value of the previous adjustment period of the E-DCH channel and the current adjustment period of the Common E-DCH channel, obtaining the Common The SIR target values of the current adjustment period of the E-DCH channel include:

Counting the common in the current adjustment period The HARQ retransmission rate of the E-DCH channel, obtaining the sum of the HARQ retransmission rates;

When the sum of the HARQ retransmission rates > When the target HARQ retransmission rate is obtained, the SIR target value of the current adjustment period is obtained by adjusting the SIR target value of the previous adjustment period upward; or

When the sum of the HARQ retransmission rates <= At the target HARQ retransmission rate, the SIR target value of the current adjustment period is obtained by adjusting the SIR target value of the previous adjustment period downward.
The base station according to claim 14, wherein the SIR target value obtained by adjusting the SIR target value of the previous adjustment period to obtain the current adjustment period is specifically:

The SIR target value of the current adjustment period = the SIR target value of the previous adjustment period + the step value of the SIR upward adjustment;

If the calculated SIR target value of the current adjustment period is greater than the preset SIR target value upper limit value, the SIR target value of the current adjustment period is adjusted to a preset SIR target value upper limit value.
The base station according to claim 14, wherein the SIR target value obtained by adjusting the SIR target value of the previous adjustment period to obtain the current adjustment period is specifically:

The SIR target value of the current adjustment period = the SIR target value of the previous adjustment period - the step value of the SIR downward adjustment;

If the calculated SIR target value of the current adjustment period is less than the preset SIR target value lower limit value, the SIR target value of the current adjustment period is adjusted to a preset SIR target value lower limit value.
The base station according to any one of claims 13 to 16, wherein the SIR target value of the previous adjustment period is an SIR target value adjacent to the previous adjustment period of the current adjustment period.
The base station according to claim 13, wherein the transmitter is specifically configured to send the inner loop power control command to the UE by using a downlink dedicated physical control channel (DPCCH channel) to indicate that the UE is a raised transmission Power is still reduced in transmit power.