CN101754249B - Link balance detection method and system for sectors in wireless communication system - Google Patents
Link balance detection method and system for sectors in wireless communication system Download PDFInfo
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- CN101754249B CN101754249B CN201010001239.2A CN201010001239A CN101754249B CN 101754249 B CN101754249 B CN 101754249B CN 201010001239 A CN201010001239 A CN 201010001239A CN 101754249 B CN101754249 B CN 101754249B
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Abstract
The invention discloses a link balance detection method for sectors in a wireless communication system, which comprises the following steps: a receiving link set Ur and a transmitting link set Ut of each sector in a wireless network are determined; when the set Ut only contains one transmitting link, the set Ur and the set Ut of the sector are integrated to obtain a set Ua containing links with the quantity of Na; on the basis of the set Ua, the coverage information of the present network of the base station of the sector can be obtained and can be stored as a first detection result; the receiving links of Na minus 1 except the transmitting link is undertaken the transmitting link switching and the obtaining the of the coverage information of the present network to obtain detection results with the quantity of Na - 1; and the link balance of the sector is evaluated according to the Na detection results. The invention also discloses a link balance detection system. Through the link balance detection system, the balance between plurality of receiving links and/or transmitting links can be correctly evaluated.
Description
Technical field
The present invention relates to the wireless telecommunication system field, refer to especially link balance detection method and the system of sector in a kind of wireless telecommunication system.
Background technology
In wireless telecommunication system, diversity technique is widely adopted, and wherein a plurality of receiving device demodulation by antenna are also a kind of diversity techniques commonly used from many multipath technology of same signal source.Wireless telecommunication system antenna reception as shown in Figure 1, transmit diversity schematic diagram, for modal " single-emission and double-receiving ", a sector of base station system is connected to antenna by two feeder lines (two feeder lines that solid line and dotted line refer to), in antenna, corresponding two unit (antenna oscillator) that exist can be searched for the signal that carrys out self terminal, and come the signal of self terminal to send to the inside of base station unit two-way and carry out demodulation and merging; In addition, a transmission channel that can be used as down link in above-mentioned two feeder lines, using dotted line as the transmission channel of down link in Fig. 1, and its antenna oscillator connected is responsible for the signal from base station system is sent to terminal at down link.
Above-mentioned diversity technique background be take the scene of modal " single-emission and double-receiving " and is set forth as example, and remaining " two four receipts ", " single-shot list receipts " etc. are substantially similar, repeat no more.
In actual wireless network is built, a base station, often with a plurality of sectors, when each sector has multilink, just is easy to occur unbalanced phenomenon.As shown in Figure 2, this is a kind of correct connected mode, there are 3 sector A, B and C in this base station, cover respectively the zone of different directions, there are two receive diversities (two receiver) and a transmit diversity (transmitting chain) in each sector, now two of each sector receivers are balances, because they are all towards identical direction, received signal is roughly suitable.
But in the middle of actual engineering construction, be easy to occur such mistake, certain sector link is connected on the antenna of all the other sectors, rather than on own corresponding that antenna.Fig. 3 has just showed wherein a kind of annexation schematic diagram of mistake, and many receivers that so just cause this sector are in unbalanced state, and the quantity of real available receive diversity (receiver) reduces, and affects network performance.
Go to find this annexation mistake but lack at present effective means, if send the engineer to go each base station field review annexation, the efficiency of this mode is very low, and cost is very high, is difficult to bear.Industry also has another method, adds up some characteristic value of many receivers of a sector, if the difference of these receiver statistical values is larger, just think the problem on annexation that exists, but the accuracy of this method is not high, and can only be used for assessing the balance of receiver, can't be used for assessing the balance between transmitting chain, also can't be used for assessing the balance between transmitting chain and receiver.
Summary of the invention
In view of this, main purpose of the present invention is to provide link balance detection method and the system of sector in a kind of wireless telecommunication system, can many receivers of accurate evaluation and/or many transmitting chains between balance.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides the link balance detection method of sector in a kind of wireless telecommunication system, the method comprises:
Determine receiver set Ur and the transmitting chain set Ut of each sector in wireless network;
While in set Ut, only containing a transmitting chain, the described set Ur of current sector and set Ut are integrated, obtained the set Ua that comprises Na bar link;
Based on described set Ua, obtain the existing network coverage information of affiliated base station, current sector, and save as the 1st testing result;
Operation according in described set Ua, the Na-1 bar receiver except transmitting chain carries out the transmitting chain switching and obtains described existing network coverage information successively, obtain Na-1 testing result;
According to a described Na testing result, the link balance of current sector is estimated.
The method further comprises: by inquiring about the layout data of described wireless network, determine receiver set Ur and the transmitting chain set Ut of described each sector.
When described set Ut contains many transmitting chains, the method further comprises: close the extremely only remaining transmitting chain of transmitting chain in described set Ut.
The method further comprises: the set Ut of current sector is equal to set Ur and gathers Ut while only containing a transmitting chain, the link balance of current sector is not estimated.
Further, the coverage information of described existing network comprises: the intensity distributions in the overlay area of current sector and this regional extent.
Further, according to a described Na testing result, the link balance of current sector is estimated, be specially: when the degree of overlapping of described testing result exceeds threshold value, judge corresponding receiver connection error, the link disequilibrium of current sector; Otherwise, judge that corresponding receiver connects correct, the link balance of current sector is good.
The present invention also provides the link balance property detection system of sector in a kind of wireless telecommunication system, and this system comprises:
Processing module, for determining receiver set Ur and the transmitting chain set Ut of each sector of wireless network; Also for, when set only contains a transmitting chain in Ut, by the described set Ur of current sector with gather Ut and integrated, obtain the set Ua that comprises Na bar link;
Detection module, for based on described set Ua, obtain the existing network coverage information of affiliated base station, current sector, and save as the 1st testing result; Also the operation for according to the Na-1 bar receiver of described set Ua except transmitting chain, carrying out the transmitting chain switching and obtain described existing network coverage information successively, obtain Na-1 testing result;
Evaluation module, for according to a described Na testing result, estimated the link balance of current sector.
Described processing module, be further used for by inquiring about the layout data of described wireless network, determines receiver set Ur and the transmitting chain set Ut of described each sector.
Described detection module, when described set Ut contains many transmitting chains, be further used for closing the extremely only remaining transmitting chain of transmitting chain in described set Ut;
Set Ut in current sector is equal to set Ur and set Ut while only containing a transmitting chain, and the link balance that is further used for stopping current sector is estimated.
Evaluation module, according to a described Na testing result, when the degree of overlapping of described testing result exceeds threshold value, be further used for judging corresponding receiver connection error, the link disequilibrium of current sector; Otherwise, judge that corresponding receiver connects correct, the link balance of current sector is good.
Link balance detection method and the system of sector in wireless telecommunication system of the present invention, the link set of the current sector based on after integrating, comprise a transmitting chain and many receivers, successively receiver is carried out the handover operation of transmitting chain, and obtain the existing network coverage information (being called for short the existing network coverage information) of base station under corresponding current sector, obtain a plurality of existing network coverage informations of corresponding receiver, so, these existing network coverage informations are compared, can determine with other existing network coverage informations and differ larger existing network coverage information, thereby can determine corresponding receiver connection error, in addition, for each transmitting chain, all carry out once method flow of the present invention, thereby can determine exactly whether corresponding transmitting chain exists connection error, thus, can be estimated the balance of this sector exactly.
The accompanying drawing explanation
Fig. 1 is wireless telecommunication system antenna reception, transmit diversity schematic diagram;
Fig. 2 be base station while having a plurality of sector the exact connect ion of transmit diversity and receive diversity concern schematic diagram;
Fig. 3 be base station while having a plurality of sector the incorrect link of transmit diversity and receive diversity concern schematic diagram;
The link balance detection method schematic flow sheet that Fig. 4 is sector in wireless telecommunication system of the present invention;
The schematic flow sheet of link balance detection method one embodiment that Fig. 5 is sector of the present invention;
The link balance property detection system structural representation that Fig. 6 is sector in wireless telecommunication system of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the present invention is further elaborated.
The link balance detection method of sector of the present invention as shown in Figure 4, comprises the following steps:
The technical scheme illustrated below by specific embodiment, as shown in Figure 5, comprise the steps:
Layout data by inquiry current wireless network, can obtain the Back ground Information of each sector in this wireless network, mainly comprise the quantity of sector, antenna type that each sector adopts, and the receiver that has of each sector and transmitting chain etc., the receiver of each sector of major concern and transmitting chain in the present invention.Receiver is divided in set Ur, transmitting chain is divided in set Ut.Wherein, set Ur comprises Nr bar receiver, and set Ut comprises Nt bar transmitting chain.
In the present invention, to the relation between Ut and Ur, can be defined as following four kinds of situations:
A, Ut and Ur are equal to fully, are identical set;
B, Ut are the pure subsets of Ur;
Exist and occur simultaneously between c, Ut and Ur;
Uncorrelated between d, Ut and Ur (not having common factor).
Under this sector obtained, the existing network coverage information of base station is as a testing result of this sector link balance, preferably, testing result is saved in a variable i, record the number of the testing result of obtaining with counter, after having obtained the coverage information of existing network in this step, it is kept in variable i, and is i=1 by counter records.
Wherein, the existing network coverage information mainly comprises: the intensity distributions in the overlay area of sector and this regional extent, a complex set of information.Industry has two large class modes can obtain this existing network coverage information usually at present: the one,, for vehicle carries test terminal and GPS equipment or possesses the test terminal of GPS function, on each road in this sector coverage area, travel, and record the coverage information on these roads, after being completed, by analysis software, test data is analyzed, can obtain the result that such ground physics and chemistry shows: so-and-so community is as main Serving cell on which test point; The 2nd, by the functional module of wireless system equipment, a large amount of further call progress information in acquisition system, and roughly determine the position of the corresponding terminal of this process by location algorithm, the final result that also can export ground physics and chemistry demonstration, above-mentioned first kind of way is similar, just the data acquisition modes difference.
After obtaining for the first time the existing network coverage information, base station system starts current sector is carried out the handover operation of transmitting chain, from set Ua, selects other Na-1 bar receivers except transmitting chain successively as transmitting chain, and the signal of base station is sent.As in the situation that above-mentioned set Ua comprises link A, B, C, need to be successively using receiver A and C as transmitting chain; In the situation that above-mentioned set Ua comprises link A, B, C, D, need to be successively using receiver A, B and C as transmitting chain.
Often carry out the switching of a transmitting chain, just obtain the existing network coverage information one time; And then carry out the switching of transmitting chain next time.The current existing network coverage information obtained is the i=i+1 time testing result.
If current i equals Na, illustrate the set Ua in except transmitting chain, (Na-1 bar) receivers all to other have all carried out the handover operation of transmitting chain, perform step 511; Otherwise, also need remaining receiver is carried out the operation of transmitting chain, return to step 508.
Above-mentioned for after in set Ua, other all receivers all carry out the handover operation of transmitting chain, the transmitting chain handover operation of corresponding every receiver has all obtained a testing result, has been the existing network coverage information: testing result 1, testing result 2... testing result Na.
Preferably, the parameter value of existing network coverage information (intensity distributions in the overlay area of sector and this regional extent) can be quantized, then be contrasted Na existing network coverage information, be determined the standard value of a Duplication; Then existing network coverage information and this standard value after each being quantized compare.Certainly, also can adopt additive method, as analyzed by analysis software, manual observation judgement etc.
Can find out, be the detection of carrying out for a certain specific transmitting chain in the said method flow process, and whether the connection that can judge receiver according to above-mentioned result has problems; While carrying out the detection of transmitting chain, can carry out once method flow of the present invention for every transmitting chain, obtain corresponding testing result, like this, these testing results are integrated to analysis, just can determine exactly any bar transmitting chain and have connection error.
Method based on above-mentioned, a concrete application example is:
At first by the requester network layout data, learn that there are 3 sectors certain base station, azimuth is respectively 10,120,280 degree, the antenna that each sector adopts is dual polarized antenna, possess respectively three receivers (A, B, C) and a transmitting chain (B), known transmitting chain and wherein a receiver be multiplexing.
Secondly, get the coverage information of this base station, as, the coverage condition of the alpha sector of base station on a route be basic side north.
Then, the alpha sector of this base station has been carried out " transmitting chain switching " operation, respectively above-mentioned receiver A and C has been sent the signal of base station as transmitting chain, then, situation for transmitting chain A and C, obtain respectively the coverage information of this base station, suppose, for the situation of transmitting chain A, this time the signal of alpha sector mainly is distributed in the southwestward of base station, with the covering before link switching, has compared obvious variation; For the situation of transmitting chain C, this time the signal of alpha sector mainly is distributed in the north of base station, with the covering before link switching, compares roughly the same; Thereby concluding, a certain receiver of the alpha sector of this base station, is A connection error, and the antenna that is connected to the another one sector has got on.
In order to realize said method, the invention provides a kind of detection system, as shown in Figure 6, comprising:
Wherein, processing module 10, be further used for by the layout data of polling of radio network, determines receiver set Ur and the transmitting chain set Ut of each sector.
Set Ut in current sector is equal to set Ur and set Ut while only containing a transmitting chain, and the link balance that is further used for stopping current sector is estimated.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (7)
1. the link balance detection method of sector in a wireless telecommunication system, is characterized in that, the method comprises:
Determine receiver set Ur and the transmitting chain set Ut of each sector in wireless network;
While in set Ut, only containing a transmitting chain, the described set Ur of current sector and set Ut are asked to union, obtain the set Ua that comprises Na bar link;
Based on described set Ua, obtain the existing network coverage information of affiliated base station, current sector, and save as the 1st testing result; Wherein, described existing network coverage information comprises: the intensity distributions in the overlay area of current sector and this regional extent;
Operation according in described set Ua, the Na-1 bar receiver except transmitting chain carries out the transmitting chain switching and obtains described existing network coverage information successively, obtain Na-1 testing result;
The parameter value of Na testing result is quantized, and described Na testing result after quantizing by contrast, determine the standard value of a Duplication; Testing result after each is quantized and the standard value of described Duplication compare, and obtain the degree of overlapping of a described Na testing result;
When the degree of overlapping of Na testing result exceeds threshold value, judge the receiver connection error that described transmitting chain is corresponding, the link disequilibrium of current sector; Otherwise, judge that the receiver that described transmitting chain is corresponding connects correctly, the link balance of current sector is good.
2. the link balance detection method of sector in wireless telecommunication system according to claim 1, it is characterized in that, the method further comprises: by inquiring about the layout data of described wireless network, determine receiver set Ur and the transmitting chain set Ut of described each sector.
3. the link balance detection method of sector in wireless telecommunication system according to claim 1, it is characterized in that, when described set Ut contains many transmitting chains, the method further comprises: close the extremely only remaining transmitting chain of transmitting chain in described set Ut.
4. the link balance detection method of sector in wireless telecommunication system according to claim 1, it is characterized in that, the method further comprises: the set Ut of current sector is equal to set Ur and gathers Ut while only containing a transmitting chain, the link balance of current sector is not estimated.
5. the link balance property detection system of sector in a wireless telecommunication system, is characterized in that, this system comprises:
Processing module, for determining receiver set Ur and the transmitting chain set Ut of each sector of wireless network; Also for, when set only contains a transmitting chain in Ut, by the described set Ur of current sector with gather Ut and ask union, obtain the set Ua that comprises Na bar link;
Detection module, for based on described set Ua, obtain the existing network coverage information of affiliated base station, current sector, and save as the 1st testing result; Also the operation for according to the Na-1 bar receiver of described set Ua except transmitting chain, carrying out the transmitting chain switching and obtain described existing network coverage information successively, obtain Na-1 testing result;
Wherein, described existing network coverage information comprises: the intensity distributions in the overlay area of current sector and this regional extent;
Evaluation module, quantized for the parameter value by Na testing result, and described Na testing result after quantizing by contrast determined the standard value of a Duplication; Testing result after each is quantized and the standard value of described Duplication compare, and obtain the degree of overlapping of a described Na testing result; When the degree of overlapping of Na testing result exceeds threshold value, judge the receiver connection error that described transmitting chain is corresponding, the link disequilibrium of current sector; Otherwise, judge that the receiver that described transmitting chain is corresponding connects correctly, the link balance of current sector is good.
6. the link balance property detection system of sector in wireless telecommunication system according to claim 5, it is characterized in that, described processing module, be further used for by inquiring about the layout data of described wireless network, determines receiver set Ur and the transmitting chain set Ut of described each sector.
7. the link balance property detection system of sector in wireless telecommunication system according to claim 5, it is characterized in that, described detection module, when described set Ut contains many transmitting chains, be further used for closing the extremely only remaining transmitting chain of transmitting chain in described set Ut;
Set Ut in current sector is equal to set Ur and set Ut while only containing a transmitting chain, and the link balance that is further used for stopping current sector is estimated.
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| US5861844A (en) * | 1994-11-29 | 1999-01-19 | Qualcomm Incorporated | Method and apparatus for providing redundant coverage within a cellular communication system |
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| CN1434596A (en) * | 2002-01-24 | 2003-08-06 | 深圳市中兴通讯股份有限公司 | Method for detecting receive link of CDMA base station |
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