CN101310452A - Method and apparatus for enhancing power utilization of multi-carrier system - Google Patents
Method and apparatus for enhancing power utilization of multi-carrier system Download PDFInfo
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- CN101310452A CN101310452A CNA2007800001712A CN200780000171A CN101310452A CN 101310452 A CN101310452 A CN 101310452A CN A2007800001712 A CNA2007800001712 A CN A2007800001712A CN 200780000171 A CN200780000171 A CN 200780000171A CN 101310452 A CN101310452 A CN 101310452A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2614—Peak power aspects
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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Abstract
A method for improving the power utilization rate of multi-carrier system, which includes the following steps: allocating emission power for the multiple carriers according to the pre-allocated individual power room for every carrier within the system and pre-allocated share power room for apart or all of carriers within the system; each carrier use the allocated emission power to perform emission. A device for improving power utilization rate of multi-carrier system is also disclosed by the present invention. The present invention can increase system capacity, decrease power waste, and improve power utilization rate of multi-carrier system.
Description
A kind of method and device for improving multicarrier system power utilization
This application claims Patent Office of the People's Republic of China, Application No. 200610062770.4, a kind of priority of the Chinese patent application of entitled " method for improving multicarrier system power utilization " is submitted on September 22nd, 2006, entire contents are hereby incorporated by reference in the application.
Technical field
The present invention relates to wireless communication field, more particularly, to a kind of method and device for improving multicarrier system power utilization.
Background technology
In mobile communication system, down transmitting power is related to the covering quality of system and the capacity of system, if the transmission power needed for business can not be satisfied, quality of service will decline, or even call drop.And covering quality can be improved using larger down transmitting power, it is also beneficial to increase power system capacity.In order to meet certain transmission power, currently used method is usually increase power amplifier（Power Amplifier, PA) transmission power, but the subject matter so brought is the increase of system power dissipation, all unfavorable to radiating and cutting operating costs.
If in addition, using general high power amplifier, spectral re-growth effect is produced due to the influence of crosstalk, disturbing adjacent channel.Therefore, must carry out linearization process to it on the basis of high power amplifier, it can preferably solve the problems, such as the spectral re-growth of signal.With the development of power amplifier linearization technology, power amplifier in communication system is progressively developed from single carrier power amplifier to multi-carrier power amplifier, multiple-carrier linear power amplifier is a high-performance power amplifier technology, including GSM (Global System for Mobile Communications, global system for mobile communications）, WCDMA (Wideband Code Division Multiple Access, WCDMA）The high-power combiner of costliness can be saved in second and third generation mobile communication system base station inside using this technology, so as to reach the purpose for saving base station cost.
By taking two carrier waves as an example, Fig. 1 gives the method for salary distribution of each carrier wave available peak power in power amplifier in the system of current multiple-carrier linear power amplifier, in figure, Multi-Carrier Power Amplifier MCPA (Multi-Carrier Power Amplifier) peak power output is Pmax, carrier wave 1, the maximum allowable power output of carrier wave 2 is respectively Pmaxl, Pmax2, because communication system is usually present Power Control, therefore actual transmission power is not a fixed value, but be actually needed according to system, by being worth formed by power control process, this value is not usually different in the same time, it is located at certain moment ta, carrier wave 1, 2 real output is Pla, P2a, certain moment tb, carrier wave 1, 2 real output is Plb,
P2b.In traditional design, Plmax and P2max are fixed values, and Plmax+P2max≤Pmax, and power control process always ensures the real output Pl≤Plmax, P2 at the moment<P2max, to avoid power amplifier from overloading, in Fig. 1, at the ta moment, P1 and P2 are both less than their upper limit, so that, whole power amplifier also has certain power headroom, the value of surplus is Pmax-Pl-P2, and the tb moment, and P1 has reached its upper limit Pmaxl, and P2 is small limits thereon, whole power amplifier still has certain power headroom, is Pmax-Plmax-P2, such situation now occurs：Carrier wave 1 is transmitted according to its peak power Plmax, but still can not meet power needs, although now power amplifier power also has surplus, but this surplus can not be utilized by carrier wave 1.
During the present invention is realized, at least there is following defect in what inventor had found above-mentioned prior art：For each carrier wave, the available peak power in power amplifier sets the fixed upper limit to the power control strategy of multicarrier linear system power amplifier, so that power amplification system general power can not be fully used, it is unfavorable for reducing system power dissipation, is also unfavorable for improving the capacity of system descending.
The content of the invention
In view of this, the present invention provides a kind of method and device for improving multicarrier system power utilization, further to improve power system capacity.
Therefore, the method for the raising multicarrier system power utilization that the present invention is provided, including：According to be in advance in the system each carrier wave distribute exclusively enjoy power interval and be that the shared power interval that the part or all of carrier wave in the system is distributed distributes the transmission power of each carrier wave；The transmission power that each carrier wave is utilized as its distribution is launched.
Present invention also offers a kind of device for improving multicarrier system power utilization, including：Power distributing unit, for according to being that each carrier wave distribution exclusively enjoys power interval and is that the shared power interval of part or all of carrier wave distribution in the system distributes the transmission power of each carrier wave in the system in advance；
Transmitter unit, is each carrier transmission signal, and the transmission power that each carrier wave is utilized as its distribution is launched.
Present invention utilizes the characteristics of multicarrier system power distribution, when the power of system power amplifier also has residue, by way of intercarrier power is shared, remaining power distribution is needed into the carrier wave of power, the power resource of system power amplifier is efficiently utilized, is conducive to improving covering quality, increases power system capacity, power consumption is reduced, multicarrier system power utilization is improved.
Brief description of the drawings
Fig. 1 is the peak power method of salary distribution schematic diagram of each carrier wave of prior art；
Fig. 2 is the schematic diagram of the method for one of embodiment of the invention；
Fig. 3 is the structured flowchart of the device of the raising multicarrier system power utilization of the embodiment of the present invention.Embodiment
The present invention is in multi-carrier systems, the performance number of each carrier wave is often what is be independently distributed, seldom there is each carrier wave while reaching the situation of full power, this feature that can be thus distributed using carrier power, system power amplifier power also have it is remaining in the case of, remaining power distribution can not be met into the carrier wave of needs to power is exclusively enjoyed in system.
To have a better understanding of the present invention, developed simultaneously embodiment below in conjunction with accompanying drawing, method of the present invention is described in detail.
By taking two carrier waves as an example, embodiment of the invention mainly includes：
In the range of Multi-Carrier Power Amplifier MCPA general power Pmax, distribution interval Pa exclusively enjoys power interval for carrier wave 1, distribution interval Pb exclusively enjoys power interval for carrier wave 2, it is carrier wave 1 and the shared power interval of carrier wave 2 to distribute interval Ps, and power distribution is carried out to each carrier wave in above-mentioned interval range：Each carrier wave is exclusively enjoyed in power interval at it first to be launched by required transmission power, when required transmission power beyond exclusively enjoy power bracket when, launched beyond part using the shared power of system currently.
It is worth noting that, in the technical scheme that the present invention is provided, described shared power interval is according to actual needs, both can be a shared power interval between partial carrier wave, such as in 5 carrier systems, carrier wave 1 and carrier wave 2 except it is respective exclusively enjoy power interval in addition to, also distribute therebetween and share a power interval, carrier wave 3,5 distribution of carrier wave 4 and carrier wave exclusively enjoy power interval；
Can also be that partial carrier wave shares multiple power intervals, partial carrier wave exclusively enjoys power interval, as in above-mentioned 5 carrier system, carrier wave 1 and 2 except it is respective exclusively enjoy power interval in addition to, distribute a shared power interval, carrier wave 3 and 4 except it is respective exclusively enjoy power interval in addition to also distribute a shared power interval, carrier wave 5 distributes one and exclusively enjoys power interval；
In above-mentioned combination, also it is not limited to the combination between two carrier waves, it can also be that the multicarrier more than both combines the shared power interval of distribution, as in above-mentioned 5 carrier system, carrier wave 1,2,3 except it is respective exclusively enjoy power interval in addition to, a shared power interval is distributed, carrier wave 4 and the distribution of carrier wave 5 exclusively enjoy power interval；It can also be that all carrier waves are shared in a total power interval, such as above-mentioned 5 carrier system in system,
Carrier wave 1,2,3,4,5 shares a power interval.
In addition, in order to avoid system power amplifier overloads, when exclusively enjoying power interval with shared power interval described in distribution, will can also respectively exclusively enjoy power interval and be limited in shared power interval sum in the range of system power amplifier general power.
The present embodiment is directed to the situation that two carrier waves distribute a shared power interval, is further described below in conjunction with the accompanying drawings：
With reference to Fig. 2, at the ta moment, the actual power demand of carrier wave 2 is smaller, it is exclusively enjoyed the need for power can meet transmission power, and power is shared without the system of borrow, and carrier wave 1 needs larger transmission power, its own exclusively enjoys power P a and can not meet needs, borrow system is needed to share power P s to meet the need for the fractional transmission power, and now still unappropriated system shares power very little, namely mean total power dissipation very little；
Conversely, at the tb moment, the actual power demand of carrier wave 1 is smaller, it is exclusively enjoyed the need for power P a can meet transmission power, and carrier wave 2 itself exclusively enjoys power P b and can not meet actual transmitting needs, borrow system is needed to share power P s to meet the transmission power needs that its exceeds part, now still unappropriated system shares power very little, total power dissipation also very little；
At the tc moment, the transmission power that carrier wave 1 and carrier wave 2 are actually needed respective exclusively enjoys power interval beyond its, it is required to borrow system power Ps come the need for meeting the transmission power that it exceeds part, now system spare shares power interval Ps=0, actual emission power reaches maximum, and system power resource utilization also reaches highest.
In the specific implementation, can be by each carrier wave peak power output sum control in system in the aggregate power range of system power amplifier, so that the general power sum of each carrier wave of any instant meets Pa+Pb+Ps without departing from the peak power scope that system power amplifier can be provided<Pmax.
In addition, the maximum allowable power output of carrier wave 1 can also be controlled to meet Plmax=Pa+Ps, the maximum allowable power output of carrier wave 2 meets P2max=Pb+Ps so that the real-time power output of each carrier wave of any instant exclusively enjoys power and the shared power sum of system no more than it.
Wherein, in the maximum allowable power output of each carrier wave of control, the power of each carrier wave can be measured in baseband portion, the real-time output power of each carrier wave is exclusively enjoyed in the range of power and system share power sum at it by NodeB (node B) Fast Congestion algorithm, it can also be controlled by technologies such as automated power controls (ALC, Automatic Level Control)；Each carrier wave output work in the controls
During rate sum, the technology that can be taken also has a lot, such as method by reducing radio-frequency channel gain, or the method deleted by business or by automated power control ALC etc., does not influence the realization of the present invention.
What deserves to be explained is, application of the present invention is also not necessarily limited to two carrier waves, is equally applicable for the multicarrier system for having two or more carrier wave, and the process of implementing is referred to two carrier systems, repeats no more here.
The embodiment of the present invention additionally provides a kind of device for improving multicarrier system power utilization, and as shown in Fig. 3, the device includes：Power distributing unit 301 and transmitter unit 302, in addition to this it is possible to including the first power control unit 303 and the second power control unit 304.
Wherein, power distributing unit 301 is used for according to being that each carrier wave distribution exclusively enjoys power interval and is that the shared power interval of part or all of carrier wave distribution in system distributes the transmission power of each carrier wave in system in advance, when carrying out power distribution, each carrier wave is exclusively enjoyed in power interval at it first and is allocated by required transmission power, when required transmission power, which exceeds, exclusively enjoys power bracket, it is allocated beyond part using shared power.Transmitter unit 302 is each carrier transmission signal, and the transmission power that each carrier wave is utilized as its distribution is launched.First power control unit 303 is used to control each carrier wave peak power output in the range of it exclusively enjoys power interval and the shared power interval sum of system.Second power control unit 304 is used to control each carrier wave peak power output sum in the aggregate power range of system power amplifier.
The process for carrying out power distribution to each carrier wave in multicarrier system using the device is consistent with the description in the method for the above embodiment of the present invention, will not be repeated here.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection.
Claims (1)
- Claim1st, a kind of method for improving multicarrier system power utilization, it is characterised in that including：According to be in advance in the system each carrier wave distribute exclusively enjoy power interval and be that the shared power interval that the part or all of carrier wave in the system is distributed distributes the transmission power of each carrier wave；The transmission power that each carrier wave is utilized as its distribution is launched.2nd, the method as described in claim 1, it is characterised in that methods described also includes：One or more shared power intervals are distributed for the partial carrier wave in the system.3rd, the method as described in claim 1, it is characterised in that the shared power interval is with the power interval summation that exclusively enjoys less than or equal to system power amplifier general power.4th, the method as described in claim 1, it is characterised in that the basis exclusively enjoy power interval and shared power interval each carrier wave transmission power is allocated including：Each carrier wave is exclusively enjoyed in power interval at it first and is allocated by transmission power needed for respective, when required transmission power exclusively enjoys power bracket beyond it, is allocated beyond part using power is shared.5th, the method as described in any one of Claims 1-4, it is characterised in that the basis, which exclusively enjoys power interval and shared power interval and is allocated to each carrier wave transmission power, to be further comprised：Each carrier wave peak power output is controlled in the range of it exclusively enjoys power interval and shared power interval sum.6th, method as claimed in claim 5, it is characterised in that controlled each carrier wave peak power output in the range of it exclusively enjoys power interval and the shared power interval sum of system by Fast Congestion algorithm.7th, method as claimed in claim 5, it is characterised in that controlled each carrier wave peak power output in the range of it exclusively enjoys power interval and the shared power interval sum of system by automated power control.8th, the method as described in any one of Claims 1-4, it is characterised in that the basis, which exclusively enjoys power interval and shared power interval and is allocated to each carrier wave transmission power, to be further comprised：Each carrier wave peak power output sum is controlled in the aggregate power range of system power amplifier.9th, method as claimed in claim 8, it is characterised in that the method deleted by reducing radio-frequency channel gain or automated power control or business controls each carrier wave peak power output sum in the aggregate power range of system power amplifier.10th, a kind of device for improving multicarrier system power utilization, it is characterised in that including：Power distributing unit, for according to being that each carrier wave distribution exclusively enjoys power interval and is that the shared power interval of part or all of carrier wave distribution in the system distributes the transmitting of each carrier wave in the system in advance Power；Transmitter unit, is each carrier transmission signal, and the transmission power that each carrier wave is utilized as its distribution is launched.11st, device as claimed in claim 10, it is characterized in that, the power distributing unit is exclusively enjoyed in power interval at it and is allocated by required transmission power first to each carrier wave, when required transmission power beyond exclusively enjoy power bracket when, be allocated beyond part using shared power.12nd, device as claimed in claim 10, it is characterised in that described device also includes：First power control unit, for controlling each carrier wave peak power output in the range of it exclusively enjoys power interval and the shared power interval sum of system.13rd, device as claimed in claim 10, it is characterised in that described device also includes：Second power control unit, for controlling each carrier wave peak power output sum in the aggregate power range of system power amplifier.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100627704A CN1964208A (en) | 2006-09-22 | 2006-09-22 | A method to improve power utilization rate of multicarrier system |
| CN200610062770.4 | 2006-09-22 | ||
| PCT/CN2007/070701 WO2008040229A1 (en) | 2006-09-22 | 2007-09-17 | A method and device for improving the power utilization rate of multi-carrier system |
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| Publication Number | Publication Date |
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| CN101310452A true CN101310452A (en) | 2008-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100627704A Pending CN1964208A (en) | 2006-09-22 | 2006-09-22 | A method to improve power utilization rate of multicarrier system |
| CNA2007800001712A Pending CN101310452A (en) | 2006-09-22 | 2007-09-17 | Method and apparatus for enhancing power utilization of multi-carrier system |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2006100627704A Pending CN1964208A (en) | 2006-09-22 | 2006-09-22 | A method to improve power utilization rate of multicarrier system |
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| CN (2) | CN1964208A (en) |
| WO (1) | WO2008040229A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112425214A (en) * | 2018-07-27 | 2021-02-26 | 华为技术有限公司 | Method and apparatus for power sharing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101677250B (en) * | 2008-09-16 | 2013-06-05 | 鼎桥通信技术有限公司 | Power sharing method for multimedia broadcast multicast service (MBMS) |
| CN101742522B (en) * | 2008-11-04 | 2013-05-08 | 鼎桥通信技术有限公司 | Carrier power sharing method in multi-carrier cell |
| CN101860943B (en) * | 2009-04-10 | 2013-01-23 | 电信科学技术研究院 | Method and system for using terminal power headrooms in configuration |
| CN101969688B (en) | 2009-07-28 | 2014-04-16 | 华为技术有限公司 | Carrier processing method, communication device and communication system |
| CN101707799B (en) * | 2009-11-11 | 2012-12-19 | 中兴通讯股份有限公司 | Method and device for managing resources |
| CN102111768B (en) * | 2009-12-29 | 2014-07-16 | 中兴通讯股份有限公司 | Multi-frequency band common networking method and device |
| CN101808396B (en) * | 2010-03-24 | 2014-04-16 | 华为技术有限公司 | Power sharing method and base station |
| BR112013033362B1 (en) | 2011-07-04 | 2021-10-26 | Huawei Technologies Co., Ltd | RADIO FREQUENCY MODULE THAT SUPPORTS MULTIPLE CARRIERS, BASE STATION AND CARRIER DISTRIBUTION METHOD |
| CN110972315A (en) | 2018-09-28 | 2020-04-07 | 索尼公司 | Electronic device and method for wireless communication, computer-readable storage medium |
| CN113347696B (en) * | 2020-03-02 | 2023-04-11 | 华为技术服务有限公司 | Power distribution method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3574446B2 (en) * | 2002-09-19 | 2004-10-06 | 松下電器産業株式会社 | Transmission power control method and base station apparatus |
| GB2402580B (en) * | 2003-06-06 | 2005-07-27 | Motorola Inc | Communication system,communication unit and methods of scheduling transmissions therein |
| CN100372429C (en) * | 2004-07-02 | 2008-02-27 | 华为技术有限公司 | Method for distributing downward physics channel power in HSDPA system |
| CN100369388C (en) * | 2004-12-29 | 2008-02-13 | 中兴通讯股份有限公司 | Method for variable distributing power of down going time slot and distributing load |
-
2006
- 2006-09-22 CN CNA2006100627704A patent/CN1964208A/en active Pending
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2007
- 2007-09-17 CN CNA2007800001712A patent/CN101310452A/en active Pending
- 2007-09-17 WO PCT/CN2007/070701 patent/WO2008040229A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112425214A (en) * | 2018-07-27 | 2021-02-26 | 华为技术有限公司 | Method and apparatus for power sharing |
| CN112425214B (en) * | 2018-07-27 | 2022-03-29 | 华为技术有限公司 | Method and apparatus for power sharing |
| US11452049B2 (en) | 2018-07-27 | 2022-09-20 | Huawei Technologies Co., Ltd. | Power sharing method and apparatus |
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| Publication number | Publication date |
|---|---|
| WO2008040229A1 (en) | 2008-04-10 |
| CN1964208A (en) | 2007-05-16 |
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