CN102088707A - Wireless network construction method for reducing interference between dual-system coexistence systems - Google Patents
Wireless network construction method for reducing interference between dual-system coexistence systems Download PDFInfo
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- CN102088707A CN102088707A CN2010105815829A CN201010581582A CN102088707A CN 102088707 A CN102088707 A CN 102088707A CN 2010105815829 A CN2010105815829 A CN 2010105815829A CN 201010581582 A CN201010581582 A CN 201010581582A CN 102088707 A CN102088707 A CN 102088707A
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Abstract
The invention discloses a wireless network construction method for reducing interference between dual-system coexistence systems, comprising the following steps: firstly adjusting the distance between two system base stations; then, changing an included angle between the directions of the antenna main lobes of two systems; counting the throughout loss of an interfered system under the combinations of different distances between the base stations and different included angles between the directions of the antenna main lobes; and finally, according to the counted throughout loss result, obtaining the combination of the distance between the system base stations and the antenna directions under which the throughout loss is the minimum when two systems coexist, i.e. the optimal networking scheme of the dual-system wireless network. The wireless network construction method for reducing interference between dual-system coexistence systems provided by the invention is realized by the system-level simulation in the situation of coexistence of the dual-system wireless network, and is simple to operate and easy to realize, a variable parameter can be flexibly regulated according to the system performance requirement, a lower system throughout loss requirement can be satisfied, and the interference power of an adjacent channels is smaller, thus improving the system performance.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of wireless network construction method that is used under two kinds of different wireless communication coexistence of systems conditions, reducing inter-system interference.
Background technology
Wireless communication system coexistence interference analysis is mainly used in research when a plurality of wireless networks coexistence, and certain system is subjected to the other system influence and the performance loss that causes.Usually disturb the method that adopts actual test and adjust base station location to carry out analysis optimization for the coexistence of wireless communication system.
At present, along with the development and the further evolution of 3-G (Generation Three mobile communication system) (3G), the situation of a plurality of wireless communication system coexistences will get more and more, and have higher requirement aspect system capacity loss.The method of adjusting base station location by actual measurement reduces the method that the coexistence of dual system wireless network is disturbed, and realizes that not only complexity is not easy to operate, and can not satisfy the requirement of higher system capacitance loss.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of wireless network construction method of disturbing between the dual system symbiotic system of being used to reduce, by to the system-level The Realization of Simulation under the dual system wireless network coexistence situation, simple to operate, be easy to realize, and can require to adjust variable element neatly according to systematic function, can satisfy lower throughput of system loss requirement.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
A kind ofly be used to reduce the wireless network construction method that disturbs between the dual system symbiotic system, comprise the steps:
(1) under the identical situation of dual system base station colocation site fan antenna main lobe direction, statistics interfered with system loss of throughput;
(2) be the center with the interfered with system base station, interfered with system fan antenna main lobe direction is turned over certain angle clockwise or counterclockwise, statistics interfered with system loss of throughput; Repeat the loss of throughput under this step all angular deflection situations of interfered with system in the minimum clamp angular region of having added up between interfered with system fan antenna main lobe direction and the EVAC (Evacuation Network Computer Model) fan antenna main lobe direction;
(3) change the EVAC (Evacuation Network Computer Model) base station location, make its with the interfered with system base station between produce certain offset, add up the interfered with system loss of throughput, repeating step (2);
(4) repeating step (3), the loss of throughput of the interfered with system under all the angular deflection situations in having added up all minimum range scopes;
(5) according to the loss of throughput of interfered with system under all offsets and angular deflection situation of statistics, analyze simulation result, draw and reduce the optimal wireless network organizing scheme disturbed between the dual system symbiotic system.
Dual system base station colocation site is meant that two minimum ranges (being offset_min) between the system base-station are 0 in the described step (1).
In the described step (2), the rotation direction unanimity of interfered with system fan antenna main lobe direction, promptly when adding up the interfered with system loss of throughput, interfered with system fan antenna main lobe direction clockwise rotates in turn, perhaps rotates counterclockwise in turn; Each angular dimension that rotates can freely be set, and for making statistics conveniently, comprehensively, each angle of rotating should be less and consistent, such as the smaller value of about 5 ° of each rotations.
Minimum angle in the described step (2) between interfered with system fan antenna main lobe direction and the EVAC (Evacuation Network Computer Model) fan antenna main lobe direction (is that θ _ min) scope is at least 0 °～60 °, this mainly is the characteristic according to three fan antennas, is the repetition of adding up comprehensively and avoiding adding up.
EVAC (Evacuation Network Computer Model) base station location and interfered with system base station location minimum range (being offset_min) scope are in the described step (4)
This mainly is the characteristics according to three sector cells, is the repetition of adding up comprehensively and avoiding adding up; Wherein R is the hexagonal cell radius.
The optimal wireless network organizing scheme that reduces in the described step (5) to disturb between the dual system symbiotic system is under the identical systems performance requirement, the networking plan that adjacent-channel interference power ratio (hereinafter to be referred as ACIR) is minimum.
Beneficial effect: a kind of wireless network construction method of disturbing between the dual system symbiotic system of being used to reduce provided by the invention, by to the system-level The Realization of Simulation under the dual system wireless network coexistence situation, simple to operate, be easy to realize, and can require to adjust neatly variable element according to systematic function, can satisfy lower throughput of system loss requirement, the adjacent-channel interference power ratio is less, has improved the performance of system.
Description of drawings
Fig. 1 is the implementing procedure figure of the inventive method;
Fig. 2 is the example schematic of networking plan structure of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further explanation.
Figure 1 shows that a kind of implementing procedure figure that is used to reduce the wireless network construction method that disturbs between the dual system symbiotic system, this method is adjusted EVAC (Evacuation Network Computer Model) base station location and interfered with system base station location minimum range (offset_min) earlier, minimum angle between interfered with system fan antenna main lobe direction and the EVAC (Evacuation Network Computer Model) fan antenna main lobe direction between Ergodic Theory (is θ _ min), specifically comprise the steps: then
Step (1): base station drift amount offset_min=0 is set, angle theta _ min=0 between antenna direction;
Step (2): statistics interfered with system loss of throughput;
Step (3): judge the maximum that whether minimum angle theta _ min is able to change between EVAC (Evacuation Network Computer Model) and interfered with system antenna direction, i.e. Max_ θ, and Max_ θ=60 °, if judged result is for being, execution in step (5) then;
Step (4): if the judged result in the step (3) is for denying, then change the interfered with system antenna direction, make that the minimum angle between EVAC (Evacuation Network Computer Model) antenna and the interfered with system antenna is θ _ min=θ _ min+ θ _ Δ, execution in step (2), wherein θ _ Δ is the change step of θ;
Step (5): judge the maximum that whether minimum range offset_min is able to change between EVAC (Evacuation Network Computer Model) and the interfered with system base station, i.e. Max_offset,
Wherein R is the hexagonal cell radius, if judged result is for being then to finish simulation flow;
Step (6): if the judged result in the step (5) is for denying, then change the EVAC (Evacuation Network Computer Model) base station location, make that the minimum range of position is offset_min=offset_min+offset_step between EVAC (Evacuation Network Computer Model) base station and the interfered with system base station, change the interfered with system antenna direction simultaneously, make EVAC (Evacuation Network Computer Model) antenna and to be subjected to the minimum angle between the potato masher antenna be θ _ min=0, execution in step (2)～step (4), wherein offset_step is the change step of offset;
Step (7): according to the loss of throughput of interfered with system under all offsets and angular deflection situation of statistics, analyze simulation result, draw and reduce the optimal wireless network organizing scheme disturbed between the dual system symbiotic system.
The networking plan schematic diagram of the interference that the LTE system when flow process of utilizing method shown in Figure 1 reduces FDD-LTE up link and CDMA20001xEVDO coexistence of systems of Figure 2 shows that causes the EVDO system, detailed process is as follows:
Step (1): LTE system and EVDO system base-station colocation site are set, antenna main lobe direction unanimity, and the loss of statistics EVDO throughput of system;
Step (2): is that the center turns over 5 ° clockwise with the EVDO system antenna with the EVDO system base-station, and the loss of statistics EVDO throughput of system is till repeating this step and being 60 ° to EVDO system antenna main lobe direction and LTE system antenna main lobe direction minimum angle;
Step (3): change LTE system base-station position, make that minimum range is between itself and the EVDO system base-station
Change EVDO system antenna main lobe direction and make it consistent, the loss of statistics EVDO throughput of system with LTE system antenna direction;
Step (4): is that the center turns over 5 ° clockwise with the EVDO system antenna with the EVDO system base-station, and the loss of statistics EVDO throughput of system is till repeating this step and being 60 ° to EVDO system antenna main lobe direction and LTE system antenna main lobe direction minimum angle;
Step (5): change LTE system base-station position, make that minimum range is between itself and the EVDO system base-station
Change EVDO system antenna main lobe direction and make it consistent, the loss of statistics EVDO throughput of system with LTE system antenna direction;
Step (6): is that the center turns over 5 ° clockwise with the EVDO system antenna with the EVDO system base-station, the loss of statistics EVDO throughput of system, till repeating this step and being 60 ° to the minimum angle of EVDO system antenna main lobe direction and LTE system antenna main lobe direction, simulation flow finishes;
Step (7): analyze the emulation statistics, the network-building method of the interference that the LTE system when reducing the LTE up link and coexisting with the EVDO reverse link of drawing causes the EVDO system.
The above only is a preferred implementation of the present invention; be noted that for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. one kind is used to reduce the wireless network construction method that disturbs between the dual system symbiotic system, and it is characterized in that: described method comprises the steps:
(1) under the identical situation of dual system base station colocation site fan antenna main lobe direction, statistics interfered with system loss of throughput;
(2) be the center with the interfered with system base station, interfered with system fan antenna main lobe direction is turned over certain angle clockwise or counterclockwise, statistics interfered with system loss of throughput; Repeat the loss of throughput under this step all angular deflection situations of interfered with system in the minimum clamp angular region of having added up between interfered with system fan antenna main lobe direction and the EVAC (Evacuation Network Computer Model) fan antenna main lobe direction;
(3) change the EVAC (Evacuation Network Computer Model) base station location, make its with the interfered with system base station between produce certain offset, add up the interfered with system loss of throughput, repeating step (2);
(4) repeating step (3), the loss of throughput of the interfered with system under all the angular deflection situations in having added up all minimum range scopes;
(5) according to the loss of throughput of interfered with system under all offsets and angular deflection situation of statistics, analyze simulation result, draw and reduce the optimal wireless network organizing scheme disturbed between the dual system symbiotic system.
2. according to claim 1ly be used to reduce the wireless network construction method that disturbs between the dual system symbiotic system, it is characterized in that: in the described step (2), the rotation direction unanimity of interfered with system fan antenna main lobe direction.
3. according to claim 1ly be used to reduce the wireless network construction method that disturbs between the dual system symbiotic system, it is characterized in that: the minimum clamp angular region in the described step (2) between interfered with system fan antenna main lobe direction and the EVAC (Evacuation Network Computer Model) fan antenna main lobe direction is 0 °～60 °.
4. according to claim 1ly be used to reduce the wireless network construction method that disturbs between the dual system symbiotic system, it is characterized in that: in the described step (4) the minimum range scope be 0～
, wherein R is the hexagonal cell radius.
5. according to claim 1ly be used to reduce the wireless network construction method that disturbs between the dual system symbiotic system, it is characterized in that: the optimal wireless network organizing scheme that reduces in the described step (5) to disturb between the dual system symbiotic system is under the identical systems performance requirement, the networking plan of adjacent-channel interference power ratio minimum.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594469A (en) * | 2012-03-03 | 2012-07-18 | 天津理工大学 | Rapid test method for anti-interference performance of mobile communication system |
| CN117278105B (en) * | 2023-09-27 | 2024-04-26 | 中国人民解放军31007部队 | Low-orbit satellite-borne communication downlink interference resisting method based on avoidance angle |
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| CN1599469A (en) * | 2003-09-18 | 2005-03-23 | 西门子（中国）有限公司 | Method for suppressing interference |
| US6999795B2 (en) * | 2001-11-29 | 2006-02-14 | Interdigital Technology Corporation | System and method utilizing dynamic beam forming for wireless communication signals |
| CN101137183A (en) * | 2006-08-31 | 2008-03-05 | 中兴通讯股份有限公司 | Multisystem coexisted base station site-selecting method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6999795B2 (en) * | 2001-11-29 | 2006-02-14 | Interdigital Technology Corporation | System and method utilizing dynamic beam forming for wireless communication signals |
| CN1599469A (en) * | 2003-09-18 | 2005-03-23 | 西门子（中国）有限公司 | Method for suppressing interference |
| CN101137183A (en) * | 2006-08-31 | 2008-03-05 | 中兴通讯股份有限公司 | Multisystem coexisted base station site-selecting method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594469A (en) * | 2012-03-03 | 2012-07-18 | 天津理工大学 | Rapid test method for anti-interference performance of mobile communication system |
| CN102594469B (en) * | 2012-03-03 | 2014-03-19 | 天津理工大学 | Rapid test method for anti-interference performance of mobile communication system |
| CN117278105B (en) * | 2023-09-27 | 2024-04-26 | 中国人民解放军31007部队 | Low-orbit satellite-borne communication downlink interference resisting method based on avoidance angle |
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Application publication date: 20110608 |