CN1700663B - Wireless network optimization subtest method - Google Patents
Wireless network optimization subtest method Download PDFInfo
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- CN1700663B CN1700663B CN 200410044307 CN200410044307A CN1700663B CN 1700663 B CN1700663 B CN 1700663B CN 200410044307 CN200410044307 CN 200410044307 CN 200410044307 A CN200410044307 A CN 200410044307A CN 1700663 B CN1700663 B CN 1700663B
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Abstract
This invention relates to wireless network test technique and discloses one wireless optimization assistant testing method, which comprises the following steps: a, the user device in network reports the self position according to RNC needs; b, the RNC accordingly judges whether the user device meet the demands, if they do, then starts the user device for positioning measurement and area information measurement; c, the user device reports the measurement information to the RNC.
Description
Technical field
The present invention relates to the wireless network test technology, particularly obtain the technology of network of relation information by test for radio network optimization.
Background technology
Mobile communication rapid development in recent years, the network size quantity that constantly extends one's service rises rapidly, the user also improves constantly the requirement of network performance quality, and the operator is also changed quantitative management to network performance index into from the qualitative requirement that signal is covered to Network Management.
The dynamic change of mobile wireless network operation conditions is bigger, is subjected to the external objective environment influencing factor more.The user market constantly enlarges, and network does not stop dilatation, the continuous increase of network service item, and making rapid progress of urban and rural buildings makes the telephone traffic distribution dynamic change.Therefore, the network optimization is an important component part in the mobile communications network operation maintenance work, and its purpose improves network communication quality exactly, improves service image, fully excavates Internet resources, makes investment obtain that repayment should be arranged.
Development along with new technology, code division multiple access (Code Division Multiple Access, be called for short " CDMA ")/global system for mobile communications (Global System for mobile Communication, abbreviation " GSM ") class of business of opening on the network is more and more, not only comprise voice service, also will open value-added service projects such as wireless data, image, develop to the multimedia direction.Like this, the maintenance quality of network requires also just more and more higher, and the task of the network optimization is more and more heavier.The network optimization is under the prerequisite of abundant awareness network running status, by various technological means, irrational part in the network is carried out necessary adjustment, makes network reach the process of optimized operation state.
Mobile communications network is a dynamic multidimentional system, after coming into operation, can change aspect following four: the first, and terminal use's variation, for example user's geographical distribution, signaling call model etc.; The second, the variation of networking operational environment, for example new building, road, vegetation; The 3rd, the variation of network configuration comprises the variation of base station distribution, the variation of power system capacity etc.; The 4th, the variation of application technology.
These change the variation all can have influence on network index, therefore all can not accomplish in one move, once the work that just can finish along with networks development gradually carrying out in proper order to the relevant monitoring of network and network optimization work.In order to make full use of average service quality that prior network device, resource and capacity improve network to greatest extent, to increase the benefit and constantly to carry out network optimization work.
Network optimization work is exactly in every technical data of continuous monitoring network, problem according to finding by the adjustment to equipment, parameter, makes the performance index of network reach optimum state, bring into play network capabilities to greatest extent, improve the average service quality of network.
The content of network optimization work comprises following several respects: equipment row barrier; Improve network operation index: wireless interface passband, traffic call drop ratio, cutting off rate, the worst sub-district, handover success rate, blocking rate etc.; Improve speech quality; Equalizing traffic volume: between interior each sub-district of net; Network equilibrium: signaling traffic load equilibrium, machine utilization equilibrium, link load equilibrium etc.; Rationally adjust Internet resources: improve utilization rate of equipment and installations, improve the availability of frequency spectrum, every channel telephone traffic etc.; Set up and safeguard long-term network optimization workbench, set up and maintaining network optimization archives.
The enforcement of radio network optimization is exactly that the network that puts into operation is carried out parameter acquisition, data analysis, tests, finds out the reason that influences network quality, makes network reach the process of optimal operational condition by technological means (hardware) or parameter adjustment.Mobile radio communication is a network that constantly changes, and network configuration, wireless environment, user distribution and usage behavior all are constantly to change, so need continuously network to be adjusted to adapt to various variations.
The network planning before networking because the trial-and-error method labor intensive material resources of actual measurement so all be to adopt the method for utilizing model prediction usually, are applied mechanically existing model earlier, replenishes test then, according to test data model is revised again.Because what apply mechanically is existing GSM network model, and Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, abbreviation " WCDMA ") characteristic of network has a great difference, and the wireless network initial model that the network initial plan is obtained is accurate inadequately.In order can constantly to revise to the wireless network propagation model, follow the tracks of the variation of wireless propagation environment simultaneously, need constantly to collect test data.
The method of a collection network planning desired data commonly used is to utilize the method for employed drive test of network planning initial stage, carry special testing equipment and test while advancing according to the route that plans sth. ahead, testing equipment comprises location receiver, test receiver, rangefinder and testing software etc.
In actual applications, there is following problem in such scheme: measuring equipment that needs are special and survey crew, waste time and energy, and the cost height, and measurement data has limitation.
Cause the main cause of this situation to be, the scope that wireless network covers is bigger, and in order to obtain than more comprehensive data, while need the professional according to the route of the appointment test data of advancing, route is generally very long, the expensive time of needs.Because take professional and technical personnel's plenty of time, and need to buy special-purpose testing hardware and testing software, so the cost height.Because the data that this test obtains are only corresponding to some places in some moment, and the data in each place all might change along with the variation of time, so test data has bigger limitation.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of radio network optimization auxiliary test methods, make that after network builds up system can utilize the positioning function of subscriber equipment and measurement function to come collection network to optimize required data, auxiliary network optimal design as required.
For achieving the above object, the invention provides a kind of network optimization auxiliary test methods, comprise following steps:
Described user device in network of A and network equipment are set up information interaction, and described subscriber equipment reports the self poisoning ability according to the requirement of described network equipment;
The described network equipment of B judges according to the stationkeeping ability of described user equipment to report whether described subscriber equipment meets the requirement of test, described subscriber equipment positions measurement and cell information is measured if then start, otherwise does not use described subscriber equipment to participate in test;
The described subscriber equipment of C periodically reports described network equipment with measurement result.
Wherein, described method also further comprises following steps:
The described network equipment of D sends the described measurement result receive and collects the time to background devices, and described background devices is preserved described measurement result and collected the time.
Described network equipment is a radio network controller.
Described steps A also further comprises following substep:
A1 receives when setting up request message from the Radio Resource control connection of described subscriber equipment when described radio network controller, described radio network controller is replied the Radio Resource control connection to described subscriber equipment and is set up message, wherein requires its stationkeeping ability of described user equipment to report;
The described subscriber equipment of A2 sends the foundation of Radio Resource control connection to described radio network controller and finishes message, wherein comprises the stationkeeping ability information of described subscriber equipment.
Described stationkeeping ability information comprises described subscriber equipment and whether has the information of stationkeeping ability and the high position precision of described subscriber equipment.
Described step B also further comprises following substep:
Described network equipment is selected the locate mode of described subscriber equipment according to the priority of positioning accuracy.
Described locate mode can be based on the location technology of cell identification or the global positioning system location technology of observed time difference location technology or network assistance.
The computational methods of the reporting period that described measurement result periodically reports are as follows:
The reporting period=sub-district resolution/plot planning speed.
Described measurement result comprises the ratio of the indication of universal mobile telecommunications system terrestrial wireless access carrier received field strength, the every modulation bit power of Common Pilot Channel and the noise spectrum density of the positional information of described subscriber equipment, described subscriber equipment position.
By relatively can finding, technical scheme difference with the prior art of the present invention is, utilizing existingly has the subscriber equipment of stationkeeping ability to come the collecting test data and send to network side, can come collection network to optimize required test data as required.
Difference on this technical scheme has brought comparatively significantly beneficial effect, promptly because do not need specialized apparatus and technical staff, so the cost of test has been saved greatly.Because subscriber equipment in use always, therefore can start test at any time, and if in operation, test, the test data of acquisition is actual operation data.Because be that many subscriber equipmenies are measured simultaneously, therefore the reflection wireless network that the data of test more can be truly in time with the space on distribution character.
Description of drawings
Fig. 1 is a kind of method flow diagram that utilizes the subscriber equipment positioning function to carry out network optimization subtest.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Below with reference to Fig. 1, describe the method for utilizing user device function to carry out network optimization subtest according to an embodiment of the invention in detail.
At first, in step 100, radio network controller (Radio Network Controller is called for short " RNC ") and subscriber equipment (User Equipment is called for short " UE ") connect and set up information interaction, and UE reports stationkeeping ability by the RNC requirement.Specifically, UE is to universal mobile telecommunications system grounding wireless access network (UMTS Terrestrial Radio Access Network, be called for short " UTRAN ") transmission Radio Resource control (Radio Resource Control, abbreviation " RRC ") request is set up in connection, UTRAN receives after the request of UE, send the RRC connection and set up message, wherein require UE to report its stationkeeping ability.RNC receives the RRC connection setup complete message of UE, wherein comprises UE stationkeeping ability information.UE stationkeeping ability information spinner will be meant whether UE has stationkeeping ability, and how many its high position precisions is.
Then enter step 110, RNC judges whether the positioning accuracy of UE meets the requirement that collection network is optimized data.If meet, enter step 120, otherwise enter step 130.The technical staff who is familiar with this field knows that the test data that is used for the optimization of wireless network propagation model comprises longitude and latitude and incoming level information.Wherein latitude and longitude information is to measure by global positioning system (Global PositionSystem is called for short " GPS ") in special testing equipment.And, support positioning function if the UE ability shows for general commercial UE, then can support multiple positioning functions such as observed time difference (Observed Time Difference OfArrival is called for short " OTDOA "), GPS assist.Three kinds of location technologies have been defined in the WCDMA R99 standard: based on the GPS location technology of location technology, OTDOA location technology and the network assistance of cell identification (CELL ID).And the locate mode of OTDOA, its precision can reach 50 meters, if adopt GPS, positioning accuracy is higher.Therefore can satisfy required precision.The positional information of UE is given RNC by UE location survey report reporting, and the locating information that GPS position and the UE of RNC by the NodeB base station reports is through calculating the latitude and longitude information that just can obtain UE.
In step 120, because according to the judgement in 110, this UE possesses the stationkeeping ability that meets required precision.So in this step, RNC selects the UE locate mode by the priority of precision, starts UE location survey and cell information and measures, and by UE metrical information is periodically reported RNC.
Three kinds of location technologies have been defined in the WCDMA R99 standard: based on the GPS location technology of location technology, OTDOA location technology and the network assistance of cell identification (CELL ID).Wherein CELL ID positioning principle is: the position and the sub-district of the serving BS that network based travelling carriage is current cover positioning mobile station.If the sub-district is an omni cell, then the position of travelling carriage is to be the center with the serving BS, and radius is in the circle of coverage radius of cell; If the sector is divided in the sub-district, can determine further that then travelling carriage is in the scope of certain sector covering.Obviously, the precision of this localization method depends on the size of travelling carriage sub-district of living in fully, kilometer does not wait from hundreds of rice to tens.The basic principle of OTDOA localization method is: the down-bound pilot frequency signal of moving table measuring different base station, obtain the due in (Timeof Arrival, be called for short " TOA ") of different base station descending pilot frequency, and promptly so-called pilot phase is measured.According to this measurement result and in conjunction with the coordinate of base station, adopt suitable location-estimation algorithm, just can calculate the position of travelling carriage.The positioning accuracy of OTDOA is compared CELL ID method and is wanted high, but its precision is subjected to the influence of environment, can be with mobile position estimation in 10-20 rice scope in suburb and rural area; Because high-lager building is more, and radio propagation environment is bad, signal is difficult to directly arrive from the base station travelling carriage in the city, generally will be through superrefraction or reflection, error has also just appearred in the TOA of down-bound pilot frequency signal, so positioning accuracy can be affected, and orientation range is about 100-200 rice.The ordinary circumstance OTDOA location response time is about 3～6s.The GPS location of network assistance (Assisted Global Positioning Systems is called for short " A-GPS ") method needs network and travelling carriage can both receive GPS information.Its basic principle is: network provides assistant GPS information to travelling carriage, (for example GPS catches supplementary to comprise the supplementary of GPS pseudo range measurement, the GPS positioning auxiliary information, GPS sensitivity supplementary, gps satellite working condition information etc.) and the supplementary calculated of location of mobile station (GPS almanac and revise data for example, the GPS ephemeris, gps navigation message etc.), utilize these information, travelling carriage can be very fast catch satellite, and receive metrical information, then metrical information is sent to the positioning service center in the network, calculate travelling carriage present located position by it.Because position calculation is finished at network, the GPS of travelling carriage receives implementation complexity to be reduced greatly, and can reduce power consumption.In open environment, as outskirts of a town or rural area, multipath and to block be negligible, the positioning accuracy of A-GPS can reach about 10m even be more excellent; If travelling carriage is in urban area circumstance, do not have block and multipath not serious, positioning accuracy will be about 30～70m; If travelling carriage is in zone indoor or other multipaths and serious shielding, this moment travelling carriage enough satellite-signals that defies capture, A-GPS can't finish the location, this is its major limitation.What more than introduce is three kinds of basic fixed position technology stipulating among the R99, and they can use under different situations, can use when positioning accuracy request is low based on the localization method of CELLID; The OTDOA method can be at positioning accuracy request higher and terminal and network use when not having the GPS receiving system; Then suitable positioning accuracy request height of network assistance GPS localization method and terminal and network use when the GPS receiving system is arranged.In addition, this several method can mix use simultaneously, to remedy deficiency each other.For example use CELL-ID and OTDOA technology simultaneously, just can obtain better positioning effect more in rural area and dense city.Use the initial stage the WCDMA network provider, most terminals do not have GPS equipment, and positioning service (Location Services, abbreviation " LCS ") class of business is not abundant, and network will mainly utilize preceding two kinds of methods that positioning service is provided; Along with networks development and maturation, the application of the GPS location technology of network assistance will increase to some extent, and network will use multiple location technology to provide LCS service for different application with different users simultaneously under different situations.
RNC chooses according to the UE ability information that obtains after the locate mode, sends starting command to UE, starts location survey function and the cell information measurement function of UE.RNC requires UE to measure according to the demand of the network optimization, start sub-district universal mobile telecommunications system terrestrial wireless herein and insert (UMTS Terrestrial Radio Access, abbreviation " UTRA ") signal strength signal intensity indication (the Received Signal Strength Indication of carrier wave (carrier) reception, be called for short " RSSI "), and Common Pilot Channel (Common Pilot Channel, abbreviation " CPICH ") ratio of every modulation bit power and noise spectrum density (Ratio of energy per modulating bit to the noise spectraldensity is called for short " Ec/No ") is measured.According to agreement, UE must support the measurement of RSSI and Ec/N0.Like this, when UE calling access is in connection status, when being cell forward access channel (CELL_FACH) and cell private channel (CELL_DCH), the UE ability that RNC reports by UE, after knowing that UE supports positioning function, and NodeB supports accurate positioning function, if the test data that the system requirements collection network is optimized, just send location survey control, UTRAcarrier RSSI and Ec/N0 and measure control messages, require UE reporting orientation information, RSSI and Ec/N0 value to UE.
Bao Gao cycle is determined according to the characteristic of sub-district herein.Wherein, plot planning speed can be divided into walking sub-district, low speed, middling speed and high speed.Cell type can be divided into compact district, city center, urban district, suburb and rural area etc. again.Cell type difference, desired position resolution are also different.Be 50 meters generally speaking, require 12.5 meters, require 5 meters in compact district, city center minimum in the urban district.Can calculate the reporting period of UE with following formula:
The reporting period=sub-district resolution/plot planning speed
Mate downwards with the agreement setting reporting period that calculates again, the value that the fetch cycle is little.
In step 130, because according to the judgement in 110, this UE does not satisfy the requirement of network planning subsidiary, so test without it.Because if the stationkeeping ability precision of UE is not enough, then measured data just do not have any value to the network optimization.
Enter step 140 from step 120, RNC collects or calculates the UE positional information, and the network optimization information needed in conjunction with collecting reports the backstage.In this step, if UE can directly calculate the position, reporting position information then, otherwise, by RNC according to UE position measurement report information in conjunction with existing self-position information, calculate the UE position.RNC reports to the backstage according to the form of time, position and RSSI, Ec/N0 value combining structure.And information such as the longitude and latitude of base station location, antenna height had been measured when the initial network planning.All these information just can be used as the measurement data of assisting a ruler in governing a country of network ruleization together and further optimize use for network.
Then enter step 150, the data of receiving are preserved on the backstage, further optimize use for network.The information that collect on the backstage can comprise the network information of different time sections and different location.These information can show the time response and the place characteristic of network comparatively fully.
Though by reference some preferred embodiment of the present invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that, can do various changes to it in the form and details, and the spirit and scope of the present invention that do not depart from appended claims and limited.
Claims (9)
1. a network optimization auxiliary test methods is characterized in that, comprises following steps:
In the described network of A subscriber equipment and network equipment set up information interaction, described subscriber equipment reports the self poisoning ability according to the requirement of described network equipment;
The described network equipment of B judges according to the stationkeeping ability of described user equipment to report whether described subscriber equipment meets the requirement of test, described subscriber equipment positions measurement and cell information is measured if then start, otherwise does not use described subscriber equipment to participate in test;
The described subscriber equipment of C periodically reports described network equipment with measurement result.
2. network optimization auxiliary test methods according to claim 1 is characterized in that, described method also further comprises following steps:
The described network equipment of D sends the described measurement result receive and collects the time to background devices, and described background devices is preserved described measurement result and collected the time.
3. network optimization auxiliary test methods according to claim 1 is characterized in that described network equipment is a radio network controller.
4. network optimization auxiliary test methods according to claim 3 is characterized in that, described steps A also further comprises following substep:
A1 receives when setting up request message from the Radio Resource control connection of described subscriber equipment when described radio network controller, described radio network controller is replied the Radio Resource control connection to described subscriber equipment and is set up message, wherein requires its stationkeeping ability of described user equipment to report;
The described subscriber equipment of A2 sends the foundation of Radio Resource control connection to described radio network controller and finishes message, wherein comprises the stationkeeping ability information of described subscriber equipment.
5. network optimization auxiliary test methods according to claim 4 is characterized in that, described stationkeeping ability information comprises described subscriber equipment and whether has the information of stationkeeping ability and the high position precision of described subscriber equipment.
6. network optimization auxiliary test methods according to claim 1 is characterized in that, described step B also further comprises following substep:
Described network equipment is selected the locate mode of described subscriber equipment according to the priority of positioning accuracy.
7. network optimization auxiliary test methods according to claim 6 is characterized in that, described locate mode can be based on the location technology of cell identification or the global positioning system location technology of observed time difference location technology or network assistance.
8. network optimization auxiliary test methods according to claim 1 is characterized in that, the computational methods of the reporting period that described measurement result periodically reports are as follows:
The reporting period=sub-district resolution/plot planning speed.
9. according to any described network optimization auxiliary test methods in the claim 1 to 8, it is characterized in that described measurement result comprises the ratio of the indication of universal mobile telecommunications system terrestrial wireless access carrier received field strength, the every modulation bit power of Common Pilot Channel and the noise spectrum density of the positional information of described subscriber equipment, described subscriber equipment position.
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| CN 200410044307 CN1700663B (en) | 2004-05-21 | 2004-05-21 | Wireless network optimization subtest method |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101330732B (en) * | 2007-06-22 | 2013-08-21 | 中兴通讯股份有限公司 | Optimization processing method for period position positioning |
| CN101822089B (en) * | 2007-10-11 | 2013-07-24 | 日本电气株式会社 | Wireless communication system and method |
| CN101835258B (en) * | 2010-04-21 | 2013-03-20 | 上海魔睿信息科技有限公司 | Mobile terminal positioning method and system independent of base station positioning information |
| CN103298000A (en) * | 2012-02-29 | 2013-09-11 | 中兴通讯股份有限公司 | Method and system for searching map information in wireless environment |
| CN103517312B (en) * | 2012-06-18 | 2017-12-01 | ***通信集团公司 | Minimize implementation method, system and the device of drive test |
| CN105577739B (en) * | 2014-11-06 | 2018-12-18 | ***通信集团公司 | A kind of switching road network information generation method and server |
| EP3413595B1 (en) * | 2016-03-01 | 2020-02-12 | Huawei Technologies Co., Ltd. | Processing method, device and system for service optimization |
| CN108541011B (en) * | 2017-03-03 | 2021-11-23 | ***通信集团福建有限公司 | Method and device for analyzing strength of wireless network signal coverage area |
| CN109392085A (en) * | 2017-08-08 | 2019-02-26 | 电信科学技术研究院 | A kind of localization method and device of 5G system |
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| CN1237869A (en) * | 1998-03-28 | 1999-12-08 | 三星电子株式会社 | Method for optimising forward link coverage in CDMA network |
| CN1287758A (en) * | 1998-10-29 | 2001-03-14 | 诺基亚网络有限公司 | Method and apparatus for implementing network planning |
| CN1442970A (en) * | 2002-03-05 | 2003-09-17 | 华为技术有限公司 | Method of optimizing soft cut over between radio network controllers |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237869A (en) * | 1998-03-28 | 1999-12-08 | 三星电子株式会社 | Method for optimising forward link coverage in CDMA network |
| CN1287758A (en) * | 1998-10-29 | 2001-03-14 | 诺基亚网络有限公司 | Method and apparatus for implementing network planning |
| CN1442970A (en) * | 2002-03-05 | 2003-09-17 | 华为技术有限公司 | Method of optimizing soft cut over between radio network controllers |
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