CN100596034C - Method for carrying out power control on user device - Google Patents
Method for carrying out power control on user device Download PDFInfo
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- CN100596034C CN100596034C CN200610058245A CN200610058245A CN100596034C CN 100596034 C CN100596034 C CN 100596034C CN 200610058245 A CN200610058245 A CN 200610058245A CN 200610058245 A CN200610058245 A CN 200610058245A CN 100596034 C CN100596034 C CN 100596034C
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- dpcch
- control channel
- emission
- down control
- transmitting power
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Abstract
The invention discloses a power control method of user facility, which comprises the following steps: recoverying and carrying out ascending DPCCH (private physics control channel) launching; checkingdescending control channel of base station; adjusting the ascending DPCCH sending power according to the result of descending control channel. The invention can control UE sending power when the DPCCH recovers, which improves the system capacitance.
Description
Technical field
The present invention relates to communication field, relate in particular to a kind of method of subscriber equipment being carried out power control.
Background technology
In 29 meetings of 3GPP RAN (third generation partnership project Radio Access Network), the job of one permanent online (Continuous connectivity for packet data users) has been set up in approval, and the main target of this job is: the number that improves the online user in the Packet Service.
In Radio Access Network, some professional traffic models is that data intermittently send, and in business procedure, the interrupted number of times of data can be very many.Such as, in the web page browsing business, generally be that download webpage (transfer of data is arranged) and browsing page (free of data transmission) hocket.The for a long time fragmentary transfer of data of some service needed also.
In above-mentioned business, if when having or not transfer of data, all keep same state, also Resources allocation when number does not pass will cause the waste of resource; If connect the time in number beginning of spreading, pass to discharge when finishing at number and connect, will cause the frequent foundation and the release that connect, with the load of increase system control, increase data transmission delay, increase connection setup time.
Permanent online job wishes to adopt certain technology, makes UE (subscriber equipment) constantly idle what do not have data to send, can keep CELL_DCH (at connected state) state for a long time, few again simultaneously resource of eating dishes without rice or wine that consumes.In existing WCDMA (Wideband Code Division Multiple Access (WCDMA)) agreement, when UE is in the CELL_DCH state, up DPCCH (Dedicated Physical Control Channel) is bound to send, and will bring uplink interference to other users like this, makes the number of users that is in the CELL_DCH state be restricted.
In the prior art, the method for UE being carried out power control is: when the two secondary data transmission of UE was longer at interval, this UE entered idle condition, stopped to carry out up DPCCH emission.When this UE has new data to send, recover to carry out up DPCCH emission again.Transmission power level can adopt UE to close the transmitting power of emission last use before, also can be the value of calculating according to the path loss meter.
The above-mentioned shortcoming that UE is carried out the method for power control is: permanent online scheme is at the smaller user's of data volume.The interval that this user sends between the data for twice is often long.For this user, because the time dependent characteristic of channel, the transmitting power of using when last data send and this emission power demand have bigger difference; And also can only be a kind of "ball-park" estimate according to the power that the path loss meter is calculated.Therefore, can demodulate transmitting of UE in order to guarantee the base station, in the method, UE need add a bigger bias when recovering the DPCCH emission.Thereby the transmitting power when causing recovering the DPCCH emission under a lot of situations has produced unnecessary interference and power dissipation greater than the needs of reality.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide and a kind of UE is carried out the method for power control, thereby can be controlled at the transmitting power of DPCCH UE when recovering effectively.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method that subscriber equipment is carried out power control comprises step:
A, user equipment (UE) after recovering to carry out special physical controlling channel of upward DPCCH emission, the down control channel of base stations detected;
B, described UE are according to the testing result of described down control channel, transmitting power to its up DPCCH is adjusted, specifically comprise: in the duration that described UE is setting, captured the emission of the down control channel of described base station, and the launch mass of this down control channel is greater than a decision value of setting, and then described UE adjusts its up DPCCH transmitting power according to the power control commands of carrying on this down control channel.
Described steps A specifically comprises:
When being in data and sending UE at interval and have data to send, this UE carries out up DPCCH emission according to the performance number P0 that sets, and begins to detect the down control channel of base station of the sub-district at UE place.
The performance number P of described setting
0=EcNo
T arg et+ L+P
Total+ Δ, wherein EcNo
T arg etBe the signal to noise ratio that the base station side demodulation needs, L is the measured value of UE to path loss, P
TotalBe the reception gross power of the sub-district of UE, Δ is pre-configured constant.
The performance number P of described setting
0Enter the transmitting power of using at last before the transmission interval for UE.
Described steps A also comprises:
If the base station of the sub-district at UE place captures the up DPCCH emission of described UE, whether the quality of up DPCCH emission of then judging this UE is greater than a decision value of setting, if the emission of down control channel is carried out in then described base station; Otherwise described base station is the emission of down control channel not.
Described steps A also comprises:
If the signal-to-interference ratio SIR of the up DPCCH of described UE is greater than a threshold value of setting, emission of downlink control channel is carried out in then described base station; Otherwise emission of downlink control channel is not carried out in described base station.
The described data transmission UE at interval that is in is in connected state CELL_DCH state, does not carry out up DPCCH emission.
The launch mass of described down control channel is greater than a decision value of setting, and then described UE adjusts its up DPCCH transmitting power according to the power control commands of carrying on this down control channel, specifically comprises:
When the SIR of the down control channel of described base station greater than a threshold value of setting, then described UE adjusts its up DPCCH transmitting power according to the power control commands of carrying on this down control channel.
Described UE adjusts the transmitting power of its up DPCCH according to the testing result of described down control channel, specifically also comprises:
In the duration that described UE is setting, do not capture the emission of the down control channel of described base station; Perhaps, the quality of the down control channel of the described base station that captures is not more than a decision value of setting, then UE judges whether the number of attempt of up DPCCH emission reaches predefined maximum attempts, if described number of attempt does not reach maximum attempts, then UE increases the performance number of setting with its up DPCCH transmitting power, whether the transmitting power of judging the up DPCCH after increasing has reached predefined maximum transmission power, if reach, then also carry out up DPCCH emission according to the transmitting power before increasing; If do not reach, then carry out up DPCCH emission according to the transmitting power after increasing;
If described number of attempt has reached maximum attempts, then UE finishes this DPCCH convalescence process.
Described UE adjusts the transmitting power of its up DPCCH according to the testing result of described down control channel, specifically also comprises:
When described UE judged that its up DPCCH transmitting power has reached predefined maximum transmission power, then described UE no longer increased its up DPCCH transmitting power.
Described UE adjusts the transmitting power of its up DPCCH according to the testing result of described down control channel, specifically also comprises:
Described UE judges whether its up DPCCH emitting times reaches predefined maximum attempts, if then described UE stops to carry out up DPCCH emission, sends a notification message to high level; Otherwise described UE continues to judge whether the DPCCH transmitting power after increasing has reached predefined maximum transmission power after its up DPCCH transmitting power is increased the performance number of setting.
Described method is applicable to permanent online job.
As seen from the above technical solution provided by the invention, the present invention is by the testing result of UE according to down control channel, and the mode of employing stepping progressively improves the transmitting power of its up DPCCH.Thereby the transmitting power of UE in the time of can being controlled at the DPCCH recovery effectively.When can be implemented in the quick restore data of UE and send, reduce as much as possible and disturb, improve power system capacity.
Description of drawings
The process chart of the embodiment of Fig. 1 the method for the invention;
Fig. 2 is the principle schematic of the embodiment of the method for the invention.
Embodiment
The invention provides a kind of method that subscriber equipment is carried out power control, core of the present invention is: UE is according to the testing result of the down control channel of base station, and the mode of employing stepping progressively improves the transmitting power of up DPCCH.
Describe the present invention in detail below in conjunction with accompanying drawing, the handling process of the embodiment of the method for the invention comprises the steps: as shown in Figure 1
Step 1-1:UE keeps the CELL_DCH state, when UE has new data to send, recovers to carry out the DPCCH emission according to the power of setting.
Constantly idle what do not have data to send as UE, UE also keeps the CELL_DCH state always, but does not carry out up DPCCH emission.
When the UE that is in the CELL_DCH state had new data to send, UE just began to carry out the convalescent power control process of DPCCH.UE at first sets a number of attempt, and then, UE is according to the initial power P that sets
0Carry out the DPCCH emission.This initial power P
0Calculate according to following formula, or be made as the transmitting power that UE carries out the idle moment last use before:
P
0＝EcNo
T?arg?et+L+P
Total+Δ
EcNo wherein
T arg etSignal to noise ratio for the base station side demodulation needs is system's preconfigured values.L is the measured value of UE to path loss, and UE can use the PCPICH of sub-district to measure P
TotalBe the reception gross power of sub-district, by broadcasting on common signal channel behind the base station measurement, UE can obtain this value on common signal channel.Δ is a pre-configured constant.
Step 1-2: the up DPCCH emission of UE is caught in the base station, carries out emission of downlink control channel according to the quality of the up DPCCH emission of UE.
When UE was in the CELL-DCH state, no matter whether UE carries out up DPCCH emission, the up DPCCH of UE was all being detected in the base station of the sub-district at UE place always.
Capture the up DPCCH emission of above-mentioned UE when described base station after, whether the quality of up DPCCH emission of just judging this UE is greater than a decision value of setting, such as, whether the SIR (signal-to-interference ratio) that judges the up DPCCH of this UE is greater than a threshold value of setting, if then the base station begins to carry out the emission of down control channel; Otherwise the base station is the emission of down control channel not.This down control channel can be descending DPCCH, also can be descending F-DPCH (part DPCH).
Step 1-3, UE detect down control channel, according to testing result its up DPCCH transmitting power are adjusted.
UE is with above-mentioned power P
0After carrying out the DPCCH emission, just begin to detect down control channel, if UE is in the duration T of setting, captured the emission of the down control channel of above-mentioned base station, and the quality of this emission of downlink control channel is greater than a decision value of setting, such as, the SIR of this down control channel is greater than a threshold value of setting, then UE adjusts its up DPCCH transmitting power according to the power control commands of carrying on this down control channel, finishes the convalescent power control process of DPCCH, begins normal power control process.
If UE is in the duration T of setting, do not capture the emission of the down control channel of above-mentioned base station, perhaps, the quality of the down control channel of the described base station that captures is not more than a decision value of setting, and then UE judges whether above-mentioned number of attempt reaches predefined maximum attempts N.If do not reach maximum attempts N, then its up DPCCH transmitting power is increased the performance number Δ of setting
P, judge whether the transmitting power of the up DPCCH after increasing has reached predefined maximum transmission power, if reach, then also carry out up DPCCH emission according to the transmitting power before increasing; If do not reach, then carry out up DPCCH emission, execution in step 1-2 according to the transmitting power after increasing; Otherwise UE finishes this DPCCH convalescence process, and high-rise this DPCCH of UE notice recovers failure.The UE high level can be by the Radio Link of deletion of common signaling process or reconstruction UE.
The principle schematic of the embodiment of the described method of the invention described above as shown in Figure 2.The method of the invention is applicable to permanent online job.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (12)
1, a kind of method that subscriber equipment is carried out power control is characterized in that, comprises step:
A, user equipment (UE) after recovering to carry out special physical controlling channel of upward DPCCH emission, the down control channel of base stations detected;
B, described UE are according to the testing result of described down control channel, transmitting power to its up DPCCH is adjusted, specifically comprise: in the duration that described UE is setting, captured the emission of the down control channel of described base station, and the launch mass of this down control channel is greater than a decision value of setting, and then described UE adjusts its up DPCCH transmitting power according to the power control commands of carrying on this down control channel.
2, method according to claim 1 is characterized in that, described steps A specifically comprises:
When the UE that is in data transmission interval had data to send, this UE was according to the performance number P that sets
0Carry out up DPCCH emission, and begin to detect the down control channel of base station of the sub-district at UE place.
3, method according to claim 2 is characterized in that, the performance number P of described setting
0=EcNo
T arget+ L+P
Total+ Δ, wherein EcNo
TargetBe the signal to noise ratio that the base station side demodulation needs, L is the measured value of UE to path loss, P
TotalBe the reception gross power of the sub-district of UE, Δ is pre-configured constant.
4, method according to claim 2 is characterized in that, the performance number P of described setting
0Enter the transmitting power of using at last before the transmission interval for UE.
5, method according to claim 2 is characterized in that, described steps A also comprises:
If the base station of the sub-district at UE place captures the up DPCCH emission of described UE, whether the quality of up DPCCH emission of then judging this UE is greater than a decision value of setting, if the emission of down control channel is carried out in then described base station; Otherwise described base station is the emission of down control channel not.
6, method according to claim 5 is characterized in that, described steps A also comprises:
If the signal-to-interference ratio SIR of the up DPCCH of described UE is greater than a threshold value of setting, emission of downlink control channel is carried out in then described base station; Otherwise emission of downlink control channel is not carried out in described base station.
7, method according to claim 2 is characterized in that, the described data transmission UE at interval that is in is in connected state CELL_DCH state, does not carry out up DPCCH emission.
8, according to claim 1,2,3,4,5,6 or 7 described methods, it is characterized in that, the launch mass of described down control channel is greater than a decision value of setting, and then described UE adjusts its up DPCCH transmitting power according to the power control commands of carrying on this down control channel, specifically comprises:
When the SIR of the down control channel of described base station greater than a threshold value of setting, then described UE adjusts its up DPCCH transmitting power according to the power control commands of carrying on this down control channel.
According to claim 1,2,3,4,5,6 or 7 described methods, it is characterized in that 9, described UE adjusts the transmitting power of its up DPCCH according to the testing result of described down control channel, specifically also comprises:
In the duration that described UE is setting, do not capture the emission of the down control channel of described base station; Perhaps, the quality of the down control channel of the described base station that captures is not more than a decision value of setting, then UE judges whether the number of attempt of up DPCCH emission reaches predefined maximum attempts, if described number of attempt does not reach maximum attempts, then UE increases the performance number of setting with its up DPCCH transmitting power, whether the transmitting power of judging the up DPCCH after increasing has reached predefined maximum transmission power, if reach, then also carry out up DPCCH emission according to the transmitting power before increasing; If do not reach, then carry out up DPCCH emission according to the transmitting power after increasing;
If described number of attempt has reached maximum attempts, then UE finishes this DPCCH convalescence process.
10, method according to claim 9 is characterized in that, described UE adjusts the transmitting power of its up DPCCH according to the testing result of described down control channel, specifically also comprises:
When described UE judged that its up DPCCH transmitting power has reached predefined maximum transmission power, then described UE no longer increased its up DPCCH transmitting power.
11, method according to claim 9 is characterized in that, described UE adjusts the transmitting power of its up DPCCH according to the testing result of described down control channel, specifically also comprises:
Described UE judges whether its up DPCCH emitting times reaches predefined maximum attempts, if then described UE stops to carry out up DPCCH emission, sends a notification message to high level; Otherwise described UE continues to judge whether the DPCCH transmitting power after increasing has reached predefined maximum transmission power after its up DPCCH transmitting power is increased the performance number of setting.
12, method according to claim 1 is characterized in that, described method is applicable to water online job for a long time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610058245A CN100596034C (en) | 2006-02-28 | 2006-02-28 | Method for carrying out power control on user device |
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|---|---|---|---|
| CN200610058245A CN100596034C (en) | 2006-02-28 | 2006-02-28 | Method for carrying out power control on user device |
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| CN1866779A CN1866779A (en) | 2006-11-22 |
| CN100596034C true CN100596034C (en) | 2010-03-24 |
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| CN101282145B (en) * | 2007-04-06 | 2013-02-13 | 鼎桥通信技术有限公司 | Method and apparatus for controlling transmission power and synchronization in TD-SCDMA system |
| CN101729465B (en) * | 2008-10-15 | 2014-02-26 | 电信科学技术研究院 | Method and device for measuring signal to noise ratio and application thereof |
| CN104641697A (en) * | 2013-07-30 | 2015-05-20 | 华为技术有限公司 | Method and device for obtaining downlink quality information |
| US10757667B2 (en) * | 2017-07-21 | 2020-08-25 | Samsung Electronics Co., Ltd. | Method and user equipment for managing synchronization with network |
| WO2019204961A1 (en) * | 2018-04-23 | 2019-10-31 | Qualcomm Incorporated | Network-aided-power-savings techniques for communication systems |
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Effective date of registration: 20211222 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: Super fusion Digital Technology Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |
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