CN101977430A - Method and system for regulating transmitting power of Femtocell - Google Patents
Method and system for regulating transmitting power of Femtocell Download PDFInfo
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- CN101977430A CN101977430A CN2010105300451A CN201010530045A CN101977430A CN 101977430 A CN101977430 A CN 101977430A CN 2010105300451 A CN2010105300451 A CN 2010105300451A CN 201010530045 A CN201010530045 A CN 201010530045A CN 101977430 A CN101977430 A CN 101977430A
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Abstract
The invention provides a method and a system for regulating a transmitting power of a Femtocell. The method comprises the steps of: accessing a Femto base station into a Femtocell convergence gateway through a network, reporting collected wireless data at the Femto base station to the Femtocell convergence gateway; reporting the wireless data to a power control server by the Femtocell convergence gateway; calculating a wireless signal transmitting power regulating value by the power control server, sending the wireless signal transmitting power regulating value to the Femtocell convergence gateway; and the regulating the transmitting power of the Femto base station by the Femtocell convergence gateway through remote control. The invention can reduce the interference and can meet the real covering requirement of a user.
Description
Technical field
The present invention relates in the 3G communication network,, realize the method and system that the transmitting power of Femtocell is adjusted based on intellectual analysis and calculating.
Background technology
Continuous development along with modern communication technology, daily life more and more be unable to do without mobile communication, in order to make the wireless network environment of gapless, develop at present the low-power femto base station that indoor wireless signals such as being used for family, office building covers in the industry, well solved the problem that grand net covers jitter and signal covering blind spot.
Usually the transmitting power of Femtocell is generally realized by automatic network planning (ANP).Femtocell equipment needs the power of homogenous frequency signal in the testing environment when powering on, if the intensity of homogenous frequency signal is stronger in the environment, then Femtocell need select more weak relatively transmitting power to avoid interference; If in the environment intensity of homogenous frequency signal a little less than, then Femtocell can select relatively stronger transmitting power to satisfy wider covering requirement.But such mode has just reduced interference to greatest extent, does not satisfy user's actual covering requirement fully.With domestic consumer is example, otherwise signal too a little less than, the signal in indivedual rooms still too a little less than; Signal is too strong, and next-door neighbor family has been subjected to unnecessary interference.
Summary of the invention
The present invention proposes the method and system that the transmitting power of Femtocell is adjusted.User's actual covering requirement can be satisfied, interference can also be reduced.
According to an aspect of the present invention, the method that proposition is adjusted the transmitting power of Femtocell, may further comprise the steps: the Femto base station to the Femtocell aggregation gateway, reports Femtocell aggregation gateway with the wireless data of the Femto base station side collected by network insertion; The Femtocell aggregation gateway reports the power Control Server with wireless data; The power Control Server calculates the wireless signal transmission power adjustment, and the wireless signal transmission power adjustment is sent to the Femtocell aggregation gateway; The Femtocell aggregation gateway is adjusted the transmitting power of Femto base station by Long-distance Control.
According to an aspect of the present invention, the system that proposition is adjusted the transmitting power of Femtocell, comprise: the Femto base station to the Femtocell aggregation gateway, reports Femtocell aggregation gateway with the wireless data of the Femto base station side collected by network insertion; Long-distance Control according to the Femtocell aggregation gateway is adjusted transmitting power; The Femtocell aggregation gateway, the wireless data that the Femto base station is reported reports the power Control Server; The wireless signal transmission power adjustment that the received power Control Server sends is adjusted the transmitting power of Femto base station by Long-distance Control; The power Control Server, the wireless data that reports according to the Femtocell aggregation gateway calculates the wireless signal transmission power adjustment, and the wireless signal transmission power adjustment is sent to the Femtocell aggregation gateway.
According to an aspect of the present invention, the power Control Server that proposition is adjusted the transmitting power of Femtocell comprises: receiver module, and the wireless data of the Femto base station side that reception Femtocell aggregation gateway reports sends to computing module with wireless data; Computing module obtains wireless data from receiver module, calculates the wireless signal transmission power adjustment according to wireless data, and the wireless signal transmission power adjustment is transmitted to sending module; Sending module obtains the wireless signal transmission power adjustment from computing module, and the wireless signal transmission power adjustment is sent to the Femtocell aggregation gateway.
Compared with prior art, the present invention can satisfy user's actual covering requirement, can also reduce interference.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes a part of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, does not constitute improper qualification of the present invention.In the accompanying drawings:
The system group network figure that Fig. 1 controls the transmitting power of Femtocell for the present invention.
The method flow diagram that Fig. 2 adjusts the transmitting power of Femtocell for the present invention.
Fig. 3 is the structure chart of power Control Server of the present invention.
Fig. 4 is the actual coverage effect contrast schematic diagram before and after the Femtocell emissive power control system uses in the embodiment of the invention.
Fig. 5 is the actual coverage effect contrast schematic diagram before and after the Femtocell emissive power control system uses in another embodiment of the present invention.
Embodiment
What Fig. 1 described is Femtocell emissive power control system networking diagram.As can be seen, mobile phone terminal, Femto base station, Femtocell aggregation gateway are the conventional network element of existing network from use description figure, and the present invention has increased the power Control Server in network.Further, can also increase power Control Server webmaster and realize correlation function, such as, to the work that daily records such as the daily operation of power Control Server, fault are obtained, gathered and upload, the network equipment of carrier-class all needs to support network management function.
The power control flow that power control system is carried out describes below, as shown in Figure 2, can comprise the steps:
In step 201, the Femtocell aggregation gateway is arrived by network insertion in the Femto base station, the wireless data of the Femto base station side collected is reported the Femtocell aggregation gateway in real time or regularly, and wireless data can comprise quantity, barrier material information of house type, area, the required barrier that penetrates etc.
In step 202, the Femtocell aggregation gateway reports the power Control Server in real time or regularly with wireless data.Certainly, the power Control Server also can regularly obtain the wireless data of Femto base station side from the Femtocell aggregation gateway.
In step 203, the power Control Server can calculate the wireless signal transmission power adjustment according to quantity, the barrier material information of house type, area, the required barrier that penetrates.
Wireless signal transmission power adjustment=Femtocell base station signal covers the Femtocell base station transmitting power that transmitting power-automatic network planning calculates of the required transmitting power of maximum path+required increase.The Femtocell base station transmitting power that automatic network planning calculates is identical with the computational methods of prior art.
Calculate the wireless signal transmission power adjustment and need take all factors into consideration multinomial factor, for equal area but the different dwelling house of house type, its final coverage effect also has a great difference.So at first the air line distance of coverage distal-most end to Femto AP is determined in the position of placing according to user's house type, area and Femto AP, draws an initial power, i.e. the required transmitting power of Femtocell base station signal covering maximum path.Calculate the transmitting power of required increase then, initial generation power is adjusted, the quantity of the required barrier that penetrates (as wall, door etc.) and to penetrate the signal attenuation value that barrier produces relevant on the transmitting power of required increase and the overlay path farthest.The signal attenuation value that penetrates the barrier generation is relevant with the barrier material information, such as, brick wall 10dB mixes earth 16dB.
On this basis, also need to carry out final adjustment according to actual environments such as house types, house type as certain user is a sleeve configuration, so only consider effective covering of major axis, the situation that wireless signal overflows in a large number may appear at the minor axis place, cause interference to periphery, therefore need reduce transmitting power accordingly, between assurance most of zone covering and control interference, find a balance point.
In step 204, the power Control Server sends to the Femtocell aggregation gateway with the wireless signal transmission power adjustment that calculates.
In step 205, the Femtocell aggregation gateway is adjusted the transmitting power of Femto base station by Long-distance Control.
The present invention can satisfy user's actual covering requirement, can also reduce interference.Major advantage of the present invention has: realize quick, reliable and stable, safety is easy-to-use, be specially adapted to numerous domestic consumers, enterprise customer and special place etc.Because of application ease for use that the present invention brought with easily popularized type is strong especially, can bring considerable social benefit and economic benefit.
Below the system that among the present invention the transmitting power of Femtocell is adjusted will be described, this system comprises: Femto base station, Femtocell aggregation gateway, power Control Server.
The Femto base station to the Femtocell aggregation gateway, reports Femtocell aggregation gateway with the wireless data of the Femto base station side collected by network insertion; Long-distance Control according to the Femtocell aggregation gateway is adjusted transmitting power;
The Femtocell aggregation gateway, the wireless data that the Femto base station is reported reports the power Control Server; The wireless signal transmission power adjustment that the received power Control Server sends is adjusted the transmitting power of Femto base station by Long-distance Control;
The power Control Server, the wireless data that reports according to the Femtocell aggregation gateway calculates the wireless signal transmission power adjustment, and the wireless signal transmission power adjustment is sent to the Femtocell aggregation gateway.
The structure chart of power Control Server as shown in Figure 3.The power Control Server can be according to wireless data, promptly according to the parameters such as quantity, barrier material information and network data of house type, area, the required barrier that penetrates, carry out intellectual analysis and calculate the transmitting power of Femtocell under specific environment, adjust the transmitting power of Femto base station by Long-distance Control automatically.The power Control Server comprises receiver module, computing module, sending module.Wherein:
Receiver module, the wireless data of the Femto base station side that reception Femtocell aggregation gateway reports sends to computing module with wireless data.
Computing module obtains wireless data from receiver module, calculates the wireless signal transmission power adjustment according to wireless data, and the wireless signal transmission power adjustment is transmitted to sending module.
Wherein, computing module calculates being operating as of wireless signal transmission power adjustment: wireless signal transmission power adjustment=Femtocell base station signal covers the Femtocell base station transmitting power that transmitting power-automatic network planning calculates of the required transmitting power of maximum path+required increase.
Sending module obtains the wireless signal transmission power adjustment from computing module, and the wireless signal transmission power adjustment is sent to the Femtocell aggregation gateway.
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail.
With actual scene among Fig. 4 is example, before Femtocell does not use emissive power control system, only carries out automatic network planning (ANP) according to the power of grand net signal emission on every side.Because left side macro base station signal is stronger, the maximum transmission power of Femtocell base station be-10dBm, and signal cover is the Femto signal cover a-quadrant shown in the figure, and most of zone of master bedroom and toilet is not under the covering of Femtocell base station signal.
After enabling the Femtocell emissive power control system, system can carry out following calculating according to the house type, area, the quantity of the required barrier that penetrates, the barrier material information that pre-set:
The Femtocell base station signal covers the required transmitting power of maximum path :-8dBm.DBm is the unit of an expression power absolute value;
The transmitting power of required increase and the signal attenuation value that penetrates different barriers and farthest on the overlay path barrier number relevant, wherein, the signal attenuation value that signal penetrates common brick wall is 10～15dB (brick wall 10dB mixes earth 16dB), and the brick wall number is 2 on the overlay path farthest.
The Femtocell base station transmitting power that automatic network planning calculates :-10dBm;
So, wireless signal transmission power adjustment=Femtocell base station signal cover the Femtocell base station transmitting power that transmitting power-automatic network planning calculates of the required transmitting power of maximum path+required increase=-8dBm+1dBm-(10dBm)=3dBm.
According to result of calculation, the Femtocell base station is improved 3dBm with transmitting power on original basis, for-7dBm, signal cover is the Femto signal cover B zone shown in the figure, the target coverage zone is substantially all under the Femtocell base station signal covers.
Different barriers is because of its different at structure and aspects such as position, and the signal attenuation value of generation is different, here just choose a scope for example by universal phenomenon.In addition, in the actual calculation process, the result often is not an integer, but the transmitting power adjustment of FAP has least unit, such as, the transmitting power adjustment least unit that general FAP is supported is respectively 1dB or 0.5dB according to the difference of equipment, so general adjustment power can be got the integer the most approaching with result of calculation.
Be example with actual scene among Fig. 5 more in addition, Femtocell only do not use before the emissive power control system according to around grand net signal emission is strong and weak carries out general automatic network planning (ANP), since around the macro base station signal a little less than, the maximum transmission power of Femtocell base station is-8dBm, signal cover is the Femto signal cover a-quadrant shown in the figure, the area that covered considerably beyond actual needs of this signal cover as can be seen, the Femto signal leaks in a large number like this, can cause unnecessary interference to neighbours and peripheral user;
After enabling the Femtocell emissive power control system, system can carry out following calculating according to the house type, area, the quantity of the required barrier that penetrates, the barrier material information that pre-set:
The Femtocell base station signal covers the required transmitting power of maximum path :-12dBm;
Biggest obstacle thing number is relevant on the transmitting power of required increase and signal attenuation value that penetrates different barriers and the overlay path, wherein, the signal attenuation value that signal penetrates common brick wall is 10～15dB (brick wall 10dB mixes earth 16dB), and the brick wall number is 1 on the overlay path farthest;
The Femtocell base station transmitting power that automatic network planning calculates :-8dBm;
The Femtocell base station transmitting power that transmitting power-automatic network planning calculates of the transmitting power adjusted value=required transmitting power of Femtocell base station signal covering maximum path+required increase=-12dBm+1dBm-(8dBm)=-3dBm.
According to result of calculation, the Femtocell base station reduces 3dBm with transmitting power on original basis, for-11dBm, signal cover is the Femto signal cover B zone shown in the figure, the target coverage zone is substantially all under the Femtocell base station signal covers.
The present invention can satisfy user's actual covering requirement, can also reduce interference.Transformation requires lowly to the existing network network equipment in the present invention, can dispose fast, is specially adapted to numerous domestic consumers, enterprise customer and special place etc.
Will be understood that in one embodiment, the method step of being discussed is to be carried out by (one or more) suitable processor that execution is stored in processing (the being computer) system of the instruction (code segment) in the storage device.Also will understand, the present invention is not limited to any specific implementation or programming technique, and the present invention can realize that the technology of function as described herein realizes with any suitable being used to.The present invention is not limited to any specific programming language or operating system.Thereby as what one skilled in the art will appreciate that, embodiments of the invention can be implemented as method, such as the such device of isolated plant, such as the such device of data handling system, perhaps bearing medium, for example computer program.The bearing medium carrying is used for one or more computer-readable code sections of control processing system implementation method.Therefore, aspect of the present invention can be taked method, pure hardware embodiment, pure software embodiment or combine the form of the embodiment of software and hardware aspect.In addition, the present invention can take to carry the form of the bearing medium (for example computer program on the computer-readable recording medium) of the computer readable program code section that is included in the medium.Can use any suitable computer-readable medium, comprising such as disk or the such magnetic storage apparatus of hard disk, perhaps such as the such optical storage media of CD-ROM.
As conclusion, should notice that those skilled in the art will be apparent to make many variations and modification to preferred embodiment, and not break away from principle of the present invention in fact describing in detail.This variation and modification are included within the described scope of the present invention of appended claims.
Claims (9)
1. the method that the transmitting power of Femtocell is adjusted may further comprise the steps:
The Femto base station to the Femtocell aggregation gateway, reports Femtocell aggregation gateway with the wireless data of the Femto base station side collected by network insertion;
The Femtocell aggregation gateway reports the power Control Server with wireless data;
The power Control Server calculates the wireless signal transmission power adjustment, and the wireless signal transmission power adjustment is sent to the Femtocell aggregation gateway;
The Femtocell aggregation gateway is adjusted the transmitting power of Femto base station by Long-distance Control.
2. according to the described method that the transmitting power of Femtocell is adjusted of claim 1, the power Control Server calculates the operation of wireless signal transmission power adjustment, may further comprise the steps:
Wireless signal transmission power adjustment=Femtocell base station signal covers the Femtocell base station transmitting power that transmitting power-automatic network planning calculates of the required transmitting power of maximum path+required increase.
3. according to the described method that the transmitting power of Femtocell is adjusted of claim 2, the power Control Server calculates the operation of wireless signal transmission power adjustment, may further comprise the steps:
Wireless data comprises quantity, the barrier material information of house type, area, the required barrier that penetrates, the air line distance of coverage distal-most end to FAP is determined in the position that the power Control Server is placed according to house type, area and Femto AP, calculates the Femtocell base station signal and covers the required transmitting power of maximum path;
The quantity of the required barrier that penetrates and to penetrate the signal attenuation value that barrier produces relevant on the transmitting power of required increase and the overlay path farthest;
The wireless signal transmission power adjustment has minimum unit of adjustment, will with the most approaching integer of result of calculation as the wireless signal transmission power adjustment.
4. the system that the transmitting power of Femtocell is adjusted comprises:
The Femto base station to the Femtocell aggregation gateway, reports Femtocell aggregation gateway with the wireless data of the Femto base station side collected by network insertion; Long-distance Control according to the Femtocell aggregation gateway is adjusted transmitting power;
The Femtocell aggregation gateway, the wireless data that the Femto base station is reported reports the power Control Server; The wireless signal transmission power adjustment that the received power Control Server sends is adjusted the transmitting power of Femto base station by Long-distance Control;
The power Control Server, the wireless data that reports according to the Femtocell aggregation gateway calculates the wireless signal transmission power adjustment, and the wireless signal transmission power adjustment is sent to the Femtocell aggregation gateway.
5. according to the described system that the transmitting power of Femtocell is adjusted of claim 4, wherein, the power Control Server calculates the Femtocell base station transmitting power that transmitting power-automatic network planning calculates that wireless signal transmission power adjustment=Femtocell base station signal covers the required transmitting power of maximum path+required increase.
6. according to the described system that the transmitting power of Femtocell is adjusted of claim 5, wherein, the air line distance of coverage distal-most end to Femto AP is determined in the position that the power Control Server is placed according to house type, area and Femto AP, calculates the Femtocell base station signal and covers the required transmitting power of maximum path; Consider the quantity of the required barrier that penetrates on the overlay path farthest when calculating the transmitting power of required increase and penetrate the signal attenuation value that barrier produces; Will with the most approaching integer of result of calculation as the wireless signal transmission power adjustment.
7. the power Control Server that the transmitting power of Femtocell is adjusted comprises:
Receiver module, the wireless data of the Femto base station side that reception Femtocell aggregation gateway reports sends to computing module with wireless data;
Computing module obtains wireless data from receiver module, calculates the wireless signal transmission power adjustment according to wireless data, and the wireless signal transmission power adjustment is transmitted to sending module;
Sending module obtains the wireless signal transmission power adjustment from computing module, and the wireless signal transmission power adjustment is sent to the Femtocell aggregation gateway.
8. according to the described power Control Server that the transmitting power of Femtocell is adjusted of claim 7, wherein, computing module calculates the Femtocell base station transmitting power that transmitting power-automatic network planning calculates that wireless signal transmission power adjustment=Femtocell base station signal covers the required transmitting power of maximum path+required increase.
9. the described according to Claim 8 power Control Server that the transmitting power of Femtocell is adjusted, wherein, the air line distance of coverage distal-most end to Femto AP is determined in the position that computing module is placed according to house type, area and Femto AP, calculates the Femtocell base station signal and covers the required transmitting power of maximum path; Consider the quantity of the required barrier that penetrates on the overlay path farthest when calculating the transmitting power of required increase and penetrate the signal attenuation value that barrier produces; Will with the most approaching integer of result of calculation as the wireless signal transmission power adjustment.
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