CN101447812B - Method for adjusting launching power of subscriber station and device thereof - Google Patents
Method for adjusting launching power of subscriber station and device thereof Download PDFInfo
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- CN101447812B CN101447812B CN2008102257556A CN200810225755A CN101447812B CN 101447812 B CN101447812 B CN 101447812B CN 2008102257556 A CN2008102257556 A CN 2008102257556A CN 200810225755 A CN200810225755 A CN 200810225755A CN 101447812 B CN101447812 B CN 101447812B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a method for adjusting launching power of a subscriber station and a device therefor. The method mainly comprises the steps as follows: Sounding signal sent by the subscriber station is received and carrier wave interference noise ratio (CNIR) of the Sounding signal is obtained; CNIR of the Sounding signal is compared with the preset threshold value; and the launching power of the subscriber station is adjusted according to the comparison result. The invention can realize the effective control of the launching power of MS on the basis of the Sounding signal sent by the MS and the preset threshold value, so as to control the Sounding launching power of the MS and meet the requirement of Sounding-based channel estimation method.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of method and apparatus that the transmitting power of subscriber station is adjusted.
Background technology
A kind of development trend of mobile communcations system is to provide transfer of data at a high speed to the mobile subscriber, makes the mobile subscriber can enjoy abundanter multimedia service.No matter the mobile subscriber is in static, at a slow speed or in the state of high-speed motion, mobile communcations system can be by sharing available resource sequence ground or carrying out communication with a plurality of mobile subscribers simultaneously.Above-mentioned mobile communcations system comprises the systems such as code division multiple access, time division multiple access, frequency division multiple access.
In mobile communcations system, the modulated signal that transmitter unit sends can arrive receiver unit by a plurality of propagation paths.Because multifactor such as decline and multipath etc., the feature of above-mentioned propagation path can change along with the time, in order to adapt to this situation, can use many and transmit and receive antenna, be called many antennas (Multiple-input Multiple-output, MIMO) technology.Because the advantage of the aspects such as the performance of the raising mobile communcations system that the MIMO technology has and capacity, it has been included in the multiple wireless communication standard, such as third generation mobile Long Term Evolution standard, global microwave access intercommunication system standard etc.
In the mobile communcations system based on the MIMO technology, in order to improve the coverage of residential quarter, lifting mobile subscriber station (Mobile Station, MS) quality of the reception signal in the residential quarter, reduce professional transmission error rates, adopted beam forming (Beam Forming, BF) technology, the key of this technology need to accurately be estimated channel exactly.
A kind of method based on the channel estimating in the mobile communcations system of MIMO technology of the prior art is: based on the channel estimation methods of Sounding (detection), in the method, the Sounding transmitting power of MS is a key factor that affects channel quality estimation, if the Sounding transmitting power of MS is lower, then channel quality estimation is inaccurate; If the Sounding transmitting power of MS is too high, although channel quality estimation is more accurate, can cause the professional duration of MS shorter.
In the control function of power of global microwave access intercommunication system is realized, when MS is in connection status, namely carry out in the process in business, MS is by cycle Ranging process or by fast power control (Fast Power Control, FPC) carry out power control and adjusting, in this power control and adjustment process, do not consider above-mentioned needs based on the channel quality estimation in the channel estimation methods of Sounding.
In realizing process of the present invention, the inventor finds also not have in the prior art a kind of requirement according to above-mentioned channel estimation methods based on Sounding, the method that the Sounding transmitting power of MS is controlled.
Summary of the invention
Embodiments of the invention provide a kind of method and apparatus that the transmitting power of mobile subscriber station is controlled, and with the requirement based on the channel estimation methods of Sounding, the Sounding transmitting power of MS are controlled.
The purpose of the embodiment of the invention is achieved through the following technical solutions:
A kind of method that the transmitting power of subscriber station is adjusted comprises:
Receive the detection Sounding signal that subscriber station sends, obtain the carrier interference noise ratio of described Sounding signal;
Carrier interference noise ratio and the predefined judging threshold of described Sounding signal are compared, according to comparative result the transmitting power of described subscriber station is adjusted.
A kind of device that the transmitting power of subscriber station is adjusted comprises:
Sounding carrier interference noise ratio acquisition module is used for receiving the detection Sounding signal that subscriber station sends, and obtains the carrier interference noise ratio of described Sounding signal;
The transmitting power adjusting module is used for carrier interference noise ratio and the predefined judging threshold of described Sounding signal are compared, and according to comparative result the transmitting power of described subscriber station is adjusted.
Can be found out by the technical scheme that the embodiment of the invention described above provides, the embodiment of the invention can realize the carrier-in-interference noise ratio (CINR based on the Sounding signal of MS transmission, Carrier-to-interference-and-noise ratio) value and predefined judging threshold, effectively control the transmitting power of MS, and then the Sounding transmitting power of control MS, thereby satisfy requirement based on the channel estimation methods of Sounding.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The process chart of a kind of method that the transmitting power of MS is controlled that Fig. 1 provides for the embodiment of the invention one;
The process chart of a kind of method that the transmitting power of MS is controlled that Fig. 2 provides for the embodiment of the invention two;
Fig. 3 provides a kind of structural representation of the device that the transmitting power of subscriber station is adjusted for the embodiment of the invention.
Embodiment
In embodiments of the present invention, BS receives the detection Sounding signal that subscriber station sends, and obtains the CINR value of described Sounding signal.Then, carrier interference noise ratio and the predefined judging threshold of described Sounding signal compared, according to comparative result the transmitting power of described subscriber station is adjusted.
Further, the power configuration table of subscriber station is set, comprise the parameter information of the transmitting power of subscriber station in this power configuration table, comprise in this parameter information: current transmit power, default transmit power, maximum transmission power, minimum emissive power and power are adjusted step-length information;
The parameter information of the transmitting power of described subscriber station is sent to described subscriber station, described subscriber station is according to the parameter information of this transmitting power, calculate the Sounding transmitting power of described subscriber station by predetermined allocation rule, according to this Sounding transmitting power emission Sounding signal.
Further, the setting-up time section is divided into several time intervals, add up continuously all Sounding signals in each time interval for the every antenna that receives the detection Sounding signal that described subscriber station sends, the carrier interference noise ratio of these all Sounding signals is averaged, obtain the carrier interference noise ratio of the Sounding signal in each time interval;
The carrier interference noise ratio of the Sounding signal in all time intervals is averaged, obtain receiving the carrier interference noise ratio of the Sounding signal of every antenna in described setting-up time section of the detection Sounding signal that described subscriber station sends.
Further, when the carrier interference noise ratio that the Sounding signal of any antenna in described setting-up time section that receives the detection Sounding signal that described subscriber station sends arranged less than predefined channel estimating thresholding, the current transmit power in the transmit power parameter information of the described subscriber station of then network side being safeguarded improves;
When the carrier interference noise ratio of the Sounding signal of each root antenna in described setting-up time section that receives the detection Sounding signal that described subscriber station sends greater than predefined channel estimating thresholding, but add power adjustment biasing sum less than predefined channel estimating thresholding, the current transmit power that then arranges in the transmit power parameter information of the described subscriber station that network side safeguards remains unchanged;
When the carrier interference noise ratio of the Sounding signal of each root antenna in described setting-up time section that receives the detection Sounding signal that described subscriber station sends adds power adjustment biasing sum greater than predefined channel estimating thresholding, the current transmit power in the transmit power parameter information of the described subscriber station of then network side being safeguarded reduces.
Further, after the current transmit power in the transmit power parameter information of the described subscriber station that network side is safeguarded improves or reduces, send the power control messages of the current transmit power of carrying the described subscriber station after the variation to described subscriber station;
After described subscriber station receives above-mentioned power control messages, obtain the transmitting power after the variation, calculate Sounding transmitting power after the variation according to the transmitting power after this variation by predetermined allocation rule again, the Sounding transmitting power emission Sounding signal after changing according to this.
For ease of the understanding to the embodiment of the invention, be further explained explanation below in conjunction with accompanying drawing as an example of several specific embodiments example, and each embodiment does not consist of the restriction to the embodiment of the invention.
Embodiment one
The handling process of a kind of method that the transmitting power of MS is controlled that this embodiment provides comprises following treatment step as shown in Figure 1:
Step 11, the power configuration table of MS is set in BS, the parameter information that comprises the transmitting power of MS in this power configuration table, can comprise in this parameter information: current transmit power, default transmit power, maximum transmission power, minimum emissive power and power are adjusted step-length information, and above-mentioned maximum transmission power, minimum emissive power, default transmit power and power are adjusted the value that step-length information can be the agreement regulation.BS sends to MS with the parameter information of the transmitting power of above-mentioned MS.
MS receives the parameter information of above-mentioned transmitting power, according to the parameter information of this transmitting power, calculates the Sounding transmitting power of MS by predetermined allocation rule, according to this Sounding transmitting power emission Sounding signal.
In BS, also to set in advance channel estimating thresholding and the power adjustment biasing of MS.
If step 13, BS judge above-mentioned CINR value less than above-mentioned channel estimating thresholding, then BS improves the current transmit power of the MS in the power configuration table; Add power adjustment biasing sum if the CINR value is higher than above-mentioned channel estimating thresholding less than the channel estimating thresholding, it is constant that then BS arranges the current transmit power of the MS in the power configuration table; Add power adjustment biasing if the CINR value is higher than the channel estimating thresholding, then BS reduces the current transmit power of the MS in the power configuration table of MS.
If step 14, BS judge the current transmit power of the MS in the above-mentioned power configuration table change has occured, then BS sends the power control messages of the current transmit power of carrying the MS after the variation to MS.
After MS receives above-mentioned power control messages, obtain the parameter information of the current transmit power of the MS after the variation.Calculate again the Sounding transmitting power of the MS after the variation by predetermined allocation rule according to the current transmit power after this variation.If the current transmit power of the MS after changing has improved, then the Sounding transmitting power of MS also will improve accordingly, if the current transmit power of the MS after changing has reduced, then the Sounding transmitting power of MS also will reduce accordingly.Then, the Sounding transmitting power emission Sounding signal after MS changes according to this.
If the current transmit power of the MS in the power configuration table does not change, then BS is not to MS transmission power control message.
Embodiment two
The handling process of a kind of method that the transmitting power of MS is controlled that this embodiment provides comprises following treatment step as shown in Figure 2:
Step 21: the power configuration table that MS is set in BS, comprise the parameter information of the transmitting power of MS in this power configuration table, can comprise in this parameter information: current transmit power, default transmit power, maximum transmission power, minimum emissive power and power are adjusted step-length information.Above-mentioned maximum transmission power, minimum emissive power can be the values of agreement regulation, fix, and above-mentioned default transmit power can be half of maximum transmission power or minimum emissive power and maximum transmission power sum.
BS is by UL MAP (UpLink Map, uplink map) message sends to the parameter information of the transmitting power of above-mentioned MS the MS of appointment, also carries UL SoundingCommand IE (uplink detection command information unit) information in this UL MAP message.
Also will set in advance channel estimating thresholding and the power adjustment biasing of MS in BS, this channel estimating thresholding can be 9dB, and power adjustment biasing can be 3dB.
After step 22:MS receives above-mentioned UL MAP message, obtain and preserve the parameter information of the transmitting power of the MS in this UL MAP message.According to the parameter information of this transmitting power, calculate the Sounding transmitting power of MS by certain allocation rule, according to this Sounding transmitting power emission Sounding signal.Above-mentioned allocation rule can be the allocation rule of the Sounding transmitting power stipulated among the 802.16E.
Step 23:BS receives the Sounding signal of the above-mentioned MS transmission of setting-up time section, and this setting-up time section is to receive 10 times that comprise the frame of Sounding signal.Then, BS obtains the CINR value of this Sounding signal according to certain algorithm for estimating, and this algorithm for estimating can be following specific descriptions:
Above-mentioned setting-up time section is divided into the time interval that several have length equal time.The every antenna that receives the detection Sounding signal that described subscriber station sends is added up all Sounding signals in each time interval continuously, and the Sounding signal independent statistics in each time interval, the CINR value of all the Sounding signals in each time interval is averaged, obtain the CINR value of the Sounding signal in each time interval.Then, the CINR value of the Sounding signal in all time intervals is averaged, obtain receiving the CINR value of the Sounding signal of every antenna in above-mentioned setting-up time section of the detection Sounding signal that described subscriber station sends.
If the CINR value of the Sounding signal of any antenna in above-mentioned setting-up time section of the detection Sounding signal that the described subscriber station of existence reception sends is less than the channel estimating thresholding, the comprehensive relatively CINR value of the Sounding signal of all antennas in above-mentioned setting-up time section of BS then, adjust step-length information according to the power in the above-mentioned power configuration table, BS improves the current transmit power of the MS in the described power configuration table of local maintenance.
If receive that the CINR value of the Sounding signal of each root antenna in above-mentioned setting-up time section of the detection Sounding signal that described subscriber station sends is higher than the channel estimating thresholding but add the power adjustment sum of setovering less than the channel estimating thresholding, then BS current transmit power that the MS in the described power configuration table of local maintenance is set remains unchanged.
If receiving the CINR value of the Sounding signal of each root antenna in above-mentioned setting-up time section of the detection Sounding signal that described subscriber station sends is higher than the channel estimating thresholding and adds the power adjustment sum of setovering, the comprehensive relatively CINR value of the Sounding signal of all antennas in above-mentioned setting-up time section of BS then, adjust step-length information according to the power in the above-mentioned power configuration table, BS is reduced the current transmit power of the MS in the power configuration table of local maintenance.
In actual applications, can also adopt sliding window principle that above-mentioned setting-up time section is divided into each time interval, it is the time interval that the time of satisfying the effective number of statistics Sounding signal namely is set, and the Sounding signal in each time interval is limited difference only.Such as, 1.2.3.4.5.6 totally 6 Sounding signals are arranged, the length of sliding window is 3, then 1.2.3,2.3.4,3.4.5,4.5.6 are respectively a time interval.Equally, every antenna is added up all Sounding signals in each time interval continuously.Sounding signal in the above-mentioned time interval that obtains can also be divided into useful signal and invalid signals, and only add up useful signal.Such as, with the Sounding signal in timing statistics, satisfy mean value near be useful signal in 3 signal variance of fluctuation.
In actual applications, those skilled in the art can also adopt other similar methods to calculate the CINR value of above-mentioned Sounding signal.
Step 24: if change (improve or reduce) has occured the current transmit power of the MS in the described power configuration table of BS local maintenance, then BS is according to the power configuration table after upgrading, send the power control messages of the current transmit power carry the MS after the variation to MS, this power control messages can be RangingResponse (ranging response) message or fast power control (Forward Power Control, FPC) message.If current transmit power and the Sounding transmitting power of the MS in the power configuration table of BS local maintenance do not change, then BS can be to MS transmission power control message.
After MS receives above-mentioned power control messages, obtain the current transmit power of the MS after the variation.Calculate again the Sounding transmitting power of the MS after the variation by certain allocation rule according to the current transmit power after this variation.If the current transmit power of the MS after changing has improved, then the Sounding transmitting power of MS also will improve accordingly, if the current transmit power of the MS after changing has reduced, then the Sounding transmitting power of MS also will reduce accordingly.Then, the Sounding transmitting power emission Sounding signal after MS changes according to this.
If the current transmit power of MS does not change, then flow process finishes, and the power control flow of waiting for next time is performed.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, to come the relevant hardware of instruction to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process such as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
The embodiment of the invention also provides a kind of device that the transmitting power of subscriber station is adjusted, and its specific implementation structure specifically can comprise as shown in Figure 3:
Sounding carrier interference noise ratio acquisition module 32 is used for receiving the detection Sounding signal that subscriber station sends, and obtains the carrier interference noise ratio of described Sounding signal;
Transmitting power adjusting module 33 is used for carrier interference noise ratio and the predefined judging threshold of described Sounding signal are compared, and according to comparative result the transmitting power of described subscriber station is adjusted.
Described device can also comprise:
The power configuration table arranges module 31, be used for arranging the power configuration table of subscriber station, comprise the parameter information of the transmitting power of subscriber station in this power configuration table, can comprise in this parameter information: current transmit power, default transmit power, maximum transmission power, minimum emissive power and power are adjusted step-length information; After the transmitting power of described subscriber station changes, the power configuration table of described subscriber station is upgraded accordingly;
Power control messages sending module 34, be used for after the power configuration table of the power configuration table that described subscriber station is set for the first time or described subscriber station upgrades, sending the power control messages of the parameter information of the transmitting power of carrying described subscriber station to described subscriber station.
Described Sounding carrier interference noise ratio acquisition module 32 specifically can comprise:
Sounding carrier interference noise ratio acquisition module 321 in the time interval, be used for the setting-up time section is divided into several time intervals, add up continuously all Sounding signals in each time interval for the every antenna that receives the detection Sounding signal that described subscriber station sends, the carrier interference noise ratio of these all Sounding signals is averaged, obtain the carrier interference noise ratio of the Sounding signal in each time interval;
Sounding carrier interference noise ratio acquisition module 322 in time period, be used for the carrier interference noise ratio of the Sounding signal in all time intervals is averaged, obtain receiving the carrier interference noise ratio of the Sounding signal of every antenna in described setting-up time section of the detection Sounding signal that described subscriber station sends.
Described transmitting power adjusting module 33 specifically comprises:
Transmitting power improves module 331, be used for working as the carrier interference noise ratio of the Sounding signal of any antenna in described setting-up time section that the detection Sounding signal that receives described subscriber station transmission is arranged less than predefined channel estimating thresholding, the current transmit power in the transmit power parameter information of the described subscriber station of then network side being safeguarded improves;
Transmitting power keeps module 332, be used for carrier interference noise ratio when the Sounding signal of each root antenna in described setting-up time section that receives the detection Sounding signal that described subscriber station sends greater than predefined channel estimating thresholding, but add power adjustment biasing sum less than predefined channel estimating thresholding, the current transmit power that then arranges in the transmit power parameter information of the described subscriber station that network side safeguards remains unchanged;
Transmitting power reduces module 333, when the carrier interference noise ratio of the Sounding signal of each root antenna in described setting-up time section that receives the detection Sounding signal that described subscriber station sends adds power adjustment biasing sum greater than predefined channel estimating thresholding, the current transmit power in the transmit power parameter information of then network side being safeguarded reduces.
In sum, use the embodiment of the invention, can realize Sounding signal and predefined judging threshold based on the MS transmission, effectively control the transmitting power of MS, and then the Sounding transmitting power of control MS, thereby satisfy the requirement based on the channel estimation methods of Sounding, solve the Power Control Problem of channel estimating in the mimo system, improve the BF performance of mimo system.In the improved situation of mimo system performance, the power consumption of more effective control MS.
In the less situation of CINR value fluctuation of the Sounding signal that MS sends, be that scope is when being between channel estimating thresholding and channel estimating thresholding+power adjustment biasing sum, can be without transmission power control message, thus MS and BS signaling interaction times reduced, save system resource.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, 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 (10)
1. the method that the transmitting power of subscriber station is adjusted is characterized in that, comprising:
Receive the detection Sounding signal that subscriber station sends, obtain the carrier interference noise ratio of described Sounding signal;
Carrier interference noise ratio and the predefined judging threshold of described Sounding signal are compared, according to comparative result the transmitting power of described subscriber station is adjusted;
The detection Sounding signal that described reception subscriber station sends obtains the carrier interference noise ratio of described Sounding signal, comprising:
The setting-up time section is divided into several time intervals, every antenna for the detection Sounding signal that receives described subscriber station transmission, add up continuously all the Sounding signals in each time interval, the carrier interference noise ratio of these all Sounding signals is averaged, obtain the carrier interference noise ratio of the Sounding signal in each time interval;
The carrier interference noise ratio of the Sounding signal in all time intervals is averaged, obtain receiving the carrier interference noise ratio of the Sounding signal of every antenna in described setting-up time section of the detection Sounding signal that described subscriber station sends.
2. the method that the transmitting power of subscriber station is adjusted according to claim 1 is characterized in that, before the detection Sounding signal that described reception subscriber station sends, comprising:
The power configuration table of subscriber station is set, comprises subscriber station transmit power parameter information in this power configuration table, comprise in this parameter information: current transmit power, default transmit power, maximum transmission power, minimum emissive power and power are adjusted step-length information;
The parameter information of the transmitting power of described subscriber station is sent to described subscriber station.
3. the method that the transmitting power of subscriber station is adjusted according to claim 1 is characterized in that, described the setting-up time section is divided into several time intervals, comprising:
The setting-up time section is divided into the time interval that several have length equal time,
Perhaps;
Utilize sliding window principle that the setting-up time section is divided into the time interval that several comprise the Sounding signal of same number.
4. according to claim 1 to 3 each described methods that the transmitting power of subscriber station is adjusted, it is characterized in that, described carrier interference noise ratio and predefined judging threshold with described Sounding signal compares, according to comparative result the transmitting power of described subscriber station is adjusted, is specifically comprised:
Carrier interference noise ratio and the predefined judging threshold of described Sounding signal are compared, according to comparative result the current transmit power in the transmit power parameter information of the described subscriber station of network side maintenance are adjusted:
Notify described subscriber station that its current transmit power is adjusted according to the current transmit power in the described transmit power parameter information after adjusting.
5. the method that the transmitting power of subscriber station is adjusted according to claim 4 is characterized in that, the current transmit power in the transmit power parameter information of the described described subscriber station of network side being safeguarded according to comparative result is adjusted, and specifically comprises:
When the carrier interference noise ratio that the Sounding signal of any antenna in described setting-up time section that receives the detection Sounding signal that described subscriber station sends arranged less than predefined channel estimating thresholding, the current transmit power in the transmit power parameter information of the described subscriber station of then network side being safeguarded improves;
When the carrier interference noise ratio of the Sounding signal of each root antenna in described setting-up time section that receives the detection Sounding signal that described subscriber station sends greater than predefined channel estimating thresholding, but add power adjustment biasing sum less than predefined channel estimating thresholding, the current transmit power that then arranges in the transmit power parameter information of the described subscriber station that network side safeguards remains unchanged;
When the carrier interference noise ratio of the Sounding signal of each root antenna in described setting-up time section that receives the detection Sounding signal that described subscriber station sends adds power adjustment biasing sum greater than predefined channel estimating thresholding, the current transmit power in the transmit power parameter information of the described subscriber station of then network side being safeguarded reduces.
6. the method that the transmitting power of subscriber station is adjusted according to claim 5 is characterized in that:
Current transmit power in the transmit power parameter information of the described described subscriber station that network side is safeguarded improves and comprises: the carrier interference noise ratio that considers the Sounding signal of all antennas in described setting-up time section of described subscriber station, adjust step-length information according to the power that arranges, the current transmit power in the transmit power parameter information of the described subscriber station that network side is safeguarded improves corresponding amplitude;
Current transmit power in the transmit power parameter information of the described described subscriber station that network side is safeguarded reduces and comprises: the carrier interference noise ratio that considers the Sounding signal of all antennas in described setting-up time section of described subscriber station, adjust step-length information according to the power that arranges, the described subscriber station that network side is safeguarded transmit power parameter information in current transmit power reduce corresponding amplitude.
7. the method that the transmitting power of subscriber station is adjusted according to claim 4, it is characterized in that, describedly notify described subscriber station that its current transmit power is adjusted according to the current transmit power in the described transmit power parameter information after adjusting, specifically comprise:
After the current transmit power in the transmit power parameter information of the described subscriber station that network side is safeguarded improves or reduces, send the power control messages of the current transmit power in the described transmit power parameter information of carrying after the variation to described subscriber station, current transmit power in the subscriber station transmit power parameter information of the transmitting power that makes described subscriber station after according to described variation is adjusted, and adjusts accordingly the Sounding signal transmission power of subscriber station.
8. the device that the transmitting power of subscriber station is adjusted is characterized in that, comprising:
Sounding carrier interference noise ratio acquisition module is used for receiving the detection Sounding signal that subscriber station sends, and obtains the carrier interference noise ratio of described Sounding signal;
The transmitting power adjusting module is used for carrier interference noise ratio and the predefined judging threshold of described Sounding signal are compared, and according to comparative result the transmitting power of described subscriber station is adjusted;
Described Sounding carrier interference noise ratio acquisition module specifically comprises:
Sounding carrier interference noise ratio acquisition module in the time interval, be used for the setting-up time section is divided into several time intervals, add up continuously all Sounding signals in each time interval for the every antenna that receives the detection Sounding signal that described subscriber station sends, the carrier interference noise ratio of these all Sounding signals is averaged, obtain the carrier interference noise ratio of the Sounding signal in each time interval;
Sounding carrier interference noise ratio acquisition module in time period, be used for the carrier interference noise ratio of the Sounding signal in all time intervals is averaged, obtain the carrier interference noise ratio of the Sounding signal of every antenna in described setting-up time section of the detection Sounding signal that the described subscriber station of described reception sends.
9. the device that the transmitting power of subscriber station is adjusted according to claim 8 is characterized in that, described device also comprises:
The power configuration table arranges module, be used for arranging the power configuration table of subscriber station, comprise the parameter information of the transmitting power of subscriber station in this power configuration table, comprise in this parameter information: current transmit power, default transmit power, maximum transmission power, minimum emissive power and power are adjusted step-length information; After the transmitting power of described subscriber station changes, the power configuration table of described subscriber station is upgraded accordingly;
The power control messages sending module, be used for after the power configuration table of the power configuration table that described subscriber station is set for the first time or described subscriber station upgrades, sending the power control messages of the parameter information of the transmitting power of carrying described subscriber station to described subscriber station.
10. the device that the transmitting power of subscriber station is adjusted according to claim 8 is characterized in that, described transmitting power adjusting module specifically comprises:
Transmitting power improves module, be used for working as the carrier interference noise ratio of the Sounding signal of any antenna in described setting-up time section that the detection Sounding signal that receives described subscriber station transmission is arranged less than predefined channel estimating thresholding, the current transmit power in the transmit power parameter information of the described subscriber station of then network side being safeguarded improves;
Transmitting power keeps module, be used for carrier interference noise ratio when the Sounding signal of each root antenna in described setting-up time section that receives the detection Sounding signal that described subscriber station sends greater than predefined channel estimating thresholding, but add power adjustment biasing sum less than predefined channel estimating thresholding, the current transmit power that then arranges in the transmit power parameter information of the described subscriber station that network side safeguards remains unchanged;
Transmitting power reduces module, the carrier interference noise ratio that is used for working as the Sounding signal of each root antenna in described setting-up time section of the detection Sounding signal that receives described subscriber station transmission adds power adjustment biasing sum greater than predefined channel estimating thresholding, the current transmit power reduction in the transmit power parameter information of the described subscriber station of then network side being safeguarded.
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| CN101572941B (en) * | 2009-06-09 | 2011-09-14 | 华为技术有限公司 | Signal transmission method based on multiple antennae and device |
| US9515757B2 (en) * | 2012-05-11 | 2016-12-06 | Intel Corporation | Systems and methods for enhanced user equipment assistance information in wireless communication systems |
| CN103687002B (en) * | 2013-12-18 | 2017-04-05 | 北京航天测控技术有限公司 | A kind of self-adapting calibration method based on field intensity location technology |
| CN107479112B (en) * | 2017-07-07 | 2020-02-11 | 北京中交华安科技有限公司 | Dense fog prediction method, device and system |
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