CN103327500A - Method and device for suppressing interference - Google Patents
Method and device for suppressing interference Download PDFInfo
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- CN103327500A CN103327500A CN2012100817136A CN201210081713A CN103327500A CN 103327500 A CN103327500 A CN 103327500A CN 2012100817136 A CN2012100817136 A CN 2012100817136A CN 201210081713 A CN201210081713 A CN 201210081713A CN 103327500 A CN103327500 A CN 103327500A
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Abstract
The invention relates to the technical field of cognition wireless, and provides a method and device for suppressing interference. The method for suppressing interference comprises the following steps of receiving configuration information, sent by a database, of a TV launching tower, wherein the configuration information comprises launching power, working frequency points of the TV launching tower, the position of the TV launching tower and the height of the TV launching tower, judging whether a base station is interfered by TV signals according to the configuration information, the position of the base station and the tower height of the base station, and when the base station is interfered by the TV signals, obtaining the direction of arrival from the TV launching tower to the base station according to the configuration information to conduct wave beam forming on the TV signals according to the direction of arrival. By the adoption of the method and device for suppressing interference, the goal of suppressing the interference of the TV signals in the base station is achieved, and the utilization rate of the frequency spectrum of TVWS is maximized.
Description
Technical field
The embodiment of the invention belongs to cognitive radio, and (Cognitive Radio, CR) technical field relate in particular to a kind of disturbance restraining method and device.
Background technology
The CR technology is by the cognitive radio spectrum environment, can dynamically insert vacant frequency range under the prerequisite of interfere with primary users (frequency range of former fixed allocation is used the user) not, and the frequency of the formula that realizes seizing every opportunity is used, thereby improves the availability of frequency spectrum.At present, but ETSI's reprovision radio system standard group and ieee standard association all resolve in (TV White Space, TVWS) to standardization is pushed the CR technology in the field at the white frequency spectrum of TV.TVWS refers to the frequency range of Digital Television work, and for example Zhong Guo TVWS is 470MHz～806MHz.Because the Digital Television launching tower all has geographical multiplexing characteristic, for example be positioned at the TV (Television of Pekinese, TV) launching tower works in 500MHz, the TV launching tower that is positioned at Chengdu then works in other frequencies, therefore, base station equipment can be selected a good opportunity and insert the frequency range that Digital Television does not have utilization by the current radio environment of perception.
In the frequency range of TVWS is used; prior art is not impaired with protection TV receiver to be principle; as shown in Figure 1; its covering radius 13 that makes base station 11 isolate TV launching tower 12 can be reused its TV frequency range at a certain distance (for example at Long Term Evolution (Long Term Evolution; LTE) system; the isolation distance of itself and TV launching tower 12 overlay areas is 15Km); at this moment; base station 11 need be isolated in outside the protection radius 14 of TV launching tower 12, and isolation distance is the poor of protection radius 14 and covering radius 13.Even if yet keep above-mentioned isolation distance, 12 pairs of base stations 11 of TV launching tower still have larger interference, suppress the scheme that the TV signal disturbs but relate in the prior art, need to strengthen the isolation distance of 11 of TV launching tower 12 and base stations thus, thereby reduced the spectrum utilization efficiency of TVWS.
Summary of the invention
The embodiment of the invention provides a kind of disturbance restraining method, and the frequency range operational version that is intended to solve existing TVWS is disturbed the TV signal and suppressed, thereby has reduced the problem of the availability of frequency spectrum of TVWS.
A kind of disturbance restraining method is applied to the base station, comprising:
Receive the configuration information of the TV TV launching tower of database transmission, described configuration information comprises transmitting power, working frequency points, the position of TV launching tower and the tower height of TV launching tower of TV launching tower;
Judge according to the position of described configuration information and described base station and the tower height of described base station whether described base station is subjected to the interference of TV signal;
When described base station is subjected to the interference of TV signal, then obtain described TV launching tower to the Bo Dajiao of described base station according to described configuration information, to reach the angle according to described ripple described TV signal is carried out wave beam forming; Otherwise stop carrying out.
The embodiment of the invention also is to provide a kind of disturbance restraining method, the configuration information of TV launching tower is sent to the base station, so that described base station is when judging the interference that is subjected to the TV signal, obtain described TV launching tower to the Bo Dajiao of described base station according to described configuration information, to reach the angle according to described ripple described TV signal is carried out wave beam forming, described configuration information comprises transmitting power, working frequency points, the position of TV launching tower and the tower height of TV launching tower of described TV launching tower.
The embodiment of the invention also is a kind of interference suppression equipment is provided, and comprising:
Information receiving unit, for the configuration information of the TV TV launching tower that receives the database transmission, described configuration information comprises transmitting power, working frequency points, the position of TV launching tower and the tower height of TV launching tower of TV launching tower;
Disturb judging unit, be used for judging according to the position of described configuration information and described base station and the tower height of described base station whether described base station is subjected to the interference of TV signal;
Ripple reaches the angle acquiring unit, is used for being subjected to when described base station the interference of TV signal, then obtains described TV launching tower to the Bo Dajiao of described base station according to described configuration information;
Disturb and suppress the unit, be used for reaching the angle according to described ripple described TV signal is carried out wave beam forming.
The embodiment of the invention also be to provide a kind of interference suppression equipment, be used for the configuration information of TV launching tower is sent to the base station, so that described base station is when judging the interference that is subjected to the TV signal, obtain described TV launching tower to the Bo Dajiao of described base station according to described configuration information, to reach the angle according to described ripple described TV signal is carried out wave beam forming, described configuration information comprises transmitting power, working frequency points, the position of TV launching tower and the tower height of TV launching tower of described TV launching tower.
The disturbance restraining method that the embodiment of the invention provides is in the frequency range operational version to TVWS, got access to the relevant configuration information of TV launching tower by the base station to calculate the TV launching tower to the Bo Dajiao of base station, and further reach the angle according to the ripple that calculates the TV signal is carried out wave beam forming, suppress the TV signal to the purpose of the interference of base station thereby reach, the availability of frequency spectrum of maximization TVWS.
Description of drawings
Fig. 1 is the scene schematic diagram of TV launching tower and base station coexistence;
Fig. 2 is the system architecture block diagram that disturbance restraining method was suitable for that the embodiment of the invention provides;
Fig. 3 is the realization flow figure of the disturbance restraining method that provides of the embodiment of the invention;
Fig. 4 is the specific implementation flow chart of embodiment of the invention step S302;
Fig. 5 is the inhibition schematic diagram of the disturbance restraining method that provides of the embodiment of the invention;
Fig. 6 is the interaction diagrams of the disturbance restraining method that provides of the embodiment of the invention;
Fig. 7 is the structured flowchart of the interference suppression equipment that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
The disturbance restraining method that the embodiment of the invention provides is in the frequency range operational version to TVWS, got access to the relevant configuration information of TV launching tower by the base station to calculate the TV launching tower to the Bo Dajiao of base station, and further reach the angle according to the ripple that calculates the TV signal is carried out wave beam forming, suppress the TV signal to the purpose of the interference of base station thereby reach, the availability of frequency spectrum of maximization TVWS.
Below in conjunction with specific embodiment realization of the present invention is described in detail:
Fig. 2 shows the system architecture block diagram that disturbance restraining method was suitable for that the embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with present embodiment.
With reference to Fig. 2, this system has comprised at least one TV launching tower 21, database 22 and at least one base station 23, and wherein, database 22 can be positioned at the control data corporation of wireless communication system, is used for the related communication data of record and management of wireless communications system.The TV launching tower 11 of proximity database 22 sends to database 22 to register with its relevant configuration information; wherein configuration information comprises but is not limited to transmitting power, working frequency points, the position of TV launching tower and the tower height of TV launching tower of TV launching tower 21; database 22 can calculate covering radius and the protection radius of TV launching tower 21 by above-mentioned configuration information.And the base station 23 in the wireless communication system is when needs use TVWS; then send the TVWS that has carried essential informations such as its position and device type to database 22 and use request; database 22 is after receiving this request; distance between each TV launching tower 21 that namely can calculate base station 23 and carry out registering; and will this distance compare with the protection radius of each TV launching tower 21; if exist and the distance of the base station 23 TV launching tower 21 greater than himself protection radius; think that then base station 23 can reuse the frequency range of this TV launching tower 21; then working frequency points and the transmitting power with the reusable TV launching tower 21 of frequency range sends to base station 23, so that the frequency range of this TV launching tower 21 can be reused in base station 23.
In embodiments of the present invention, base station 23 is when using TVWS, in order to suppress TV launching tower 21 to the TV signal interference of its generation, in use can disturb the TV signal and suppress to handle, following examples just are described in detail the disturbance restraining method in the use:
Fig. 3 shows the realization flow of the disturbance restraining method that the embodiment of the invention provides, and present embodiment is executive agent with the base station among Fig. 2, and details are as follows:
In step S301, receive the configuration information of the TV TV launching tower of database transmission, described configuration information comprises transmitting power, working frequency points, the position of TV launching tower and the tower height of TV launching tower of TV launching tower.
In the present embodiment, the configuration information of the TV launching tower that database sends to the base station is for having passed through after database adjudicates, think that the base station can reuse the configuration information of the TV launching tower of its frequency range, wherein, configuration information comprises but is not limited to transmitting power, working frequency points, the position of TV launching tower and the tower height of TV launching tower of TV launching tower.
In step S302, judge according to the position of described configuration information and described base station and the tower height of described base station whether described base station is subjected to the interference of TV signal, disturb if be subjected to signal, execution in step S303 then, otherwise stop carrying out.
Behind the configuration information that receives the reusable TV launching tower of frequency range, the specific implementation of step S302 as shown in Figure 4:
In step S401, according to the position of described TV launching tower and tower height and the position of described base station and the tower height of described base station of described TV launching tower, obtain described base station to the distance of described TV launching tower.
In step S402, according to described distance, described transmitting power and described working frequency points, obtain described TV launching tower to the TV signal strength signal intensity of described base station.
In step S403, when described TV signal strength signal intensity greater than predetermined threshold value, judge that then described base station is subjected to the interference of TV signal.
In step S404, when described TV signal strength signal intensity is not more than described predetermined threshold value, judge that then described base station is not subjected to the interference of TV signal.
For example, make an uproar and be-98dBm in the end of general base station, and the TV launching tower that then gets access to during greater than-98dBm, thinks then that this moment, the base station was subjected to the interference of TV signal to the TV signal strength signal intensity of base station.
In step S303, obtain described TV launching tower to the Bo Dajiao of described base station according to described configuration information, to reach the angle according to described ripple the TV signal is carried out wave beam forming.
Wherein, ripple reaches obtaining of angle and above-mentioned base station is prior art to TV launching tower distance and obtaining of signal strength signal intensity, can calculate by relevant signal principle and obtain, and does not give unnecessary details at this.
In the present embodiment, according to the different configuration information of TV launching tower, can adopt diverse ways to get access to the TV launching tower to the Bo Dajiao of base station, below provide two kinds of concrete execution modes:
(1): when configuration information comprised the tower height of the position of TV launching tower and TV launching tower, then the base station got access to the Bo Dajiao that the TV launching tower arrives the base station according to the position of described TV launching tower and the tower height of described TV launching tower and the position of described base station and the tower height of described base station.
(2): when configuration information also comprises the standard of TV launching tower and corresponding pattern and pilot type, then by standard and corresponding pattern thereof and pilot type the TV signal is carried out channel estimating, and get access to the TV launching tower to the Bo Dajiao of base station by the channel that estimates, and reach angle design wave beam forming according to this ripple.
In above-mentioned situation (two), the standard of TV launching tower and corresponding pattern thereof and pilot type also can be obtained when database is initiated registration at the TV launching tower, than situation (one), the Bo Dajiao that method by situation (two) gets access to is more accurate, also therefore can reach better interference suppressioning effect.
As a preferred embodiment of the present invention, in disturbing process of inhibition, wave beam forming can be for zero notch bundle figuration, to reach best interference suppressioning effect.When carrying out zero notch bundle figuration, as an illustration, its inhibition can be as shown in Figure 5, on the Quasi-LOS channel direction in Fig. 5, the shape of antenna beam has been carried out zero limit figuration and has handled, and with the interference that brings at this channel minimizing TV signal, thereby has maximized the availability of frequency spectrum.
The disturbance restraining method that provides by the embodiment of the invention, can suppress the TV signal interference that the TV launching tower produces effectively, improved the availability of frequency spectrum of TVWS, simultaneously, also needn't increase base station and the isolation distance that carries out the TV launching tower that frequency range reuses because of the interference of TV signal, increase the scope of channeling greatly.
As one embodiment of the present of invention, when being executive agent with the database among Fig. 2, database sends to the base station with the configuration information of TV launching tower, so that described base station is when judging the interference that is subjected to the TV signal, obtain described TV launching tower to the Bo Dajiao of described base station according to described configuration information, to reach the angle according to described ripple described TV signal is carried out wave beam forming, described configuration information comprises transmitting power, working frequency points, the position of TV launching tower and the tower height of TV launching tower of described TV launching tower.In the present embodiment, concrete wave beam is composed row and is realized that principle is identical to the described principle of step S302 with step S301, does not give unnecessary details at this.
Fig. 6 shows the interaction diagrams of the disturbance restraining method that the embodiment of the invention provides, and mutual both sides are the database shown in Fig. 2 and base station, and details are as follows:
1, database sends the configuration information of TV launching tower to the base station, and described configuration information comprises transmitting power, working frequency points, the position of TV launching tower and the tower height of TV launching tower of described TV launching tower.
2, the base station judges according to the position of configuration information and base station and the tower height of base station whether the base station is subjected to the interference of TV signal.
3, when the base station judgement is subjected to the interference of TV signal, obtain described TV launching tower to the Bo Dajiao of described base station according to described configuration information.
4, the base station reaches the angle according to described ripple signal is carried out wave beam forming.
Fig. 7 shows the structured flowchart of the interference suppression equipment that the embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with present embodiment.
This device can run in as shown in Figure 2 the base station, for running on the unit of wherein hardware cell, software unit or software and hardware combining, particularly:
With reference to Fig. 7, in the base station, can comprise:
Disturb judging unit 72, judge according to the position of described configuration information and described base station and the tower height of described base station whether described base station is subjected to the interference of TV signal.
Ripple reaches angle acquiring unit 73, when described base station is subjected to the interference of TV signal, then obtains described TV launching tower to the Bo Dajiao of described base station according to described configuration information.
Disturb and suppress unit 74, reach the angle according to described ripple described TV signal is carried out wave beam forming.
Further, disturb judging unit 72 to comprise:
Distance is obtained subelement 721, according to the position of described TV launching tower and tower height and the position of described base station and the tower height of described base station of described TV launching tower, obtains described base station to the distance of described TV launching tower.
Signal strength signal intensity is obtained subelement 722, according to described distance, described transmitting power and described working frequency points, obtains described TV launching tower to the TV signal strength signal intensity of described base station
Ripple reaches angle acquiring unit 73 and comprises:
First obtains subelement 731, according to the position of described TV launching tower and tower height and the position of described base station and the tower height of described base station of described TV launching tower, obtains described TV launching tower to the Bo Dajiao of described base station.
And when configuration information also comprises the standard of described TV launching tower and corresponding pattern and pilot type,
Ripple reaches angle acquiring unit 73 and also comprises:
Second obtains subelement 733, obtains described TV launching tower to the Bo Dajiao of described base station according to the channel that estimates.
And as another embodiment of the present invention, in database, interference suppression equipment is used for the configuration information of TV launching tower is sent to the base station, so that described base station is when judging the interference that is subjected to the TV signal, calculate described TV launching tower to the Bo Dajiao of described base station according to described configuration information, to reach the angle according to described ripple described TV signal is carried out wave beam forming, described configuration information comprises transmitting power, working frequency points, the position of TV launching tower and the tower height of TV launching tower of described TV launching tower.
The disturbance restraining method that the embodiment of the invention provides is in the frequency range operational version to TVWS, got access to the relevant configuration information of TV launching tower by the base station to calculate the TV launching tower to the Bo Dajiao of base station, and further reach the angle according to the ripple that calculates the TV signal is carried out wave beam forming, suppress the TV signal to the purpose of the interference of base station thereby reach, the availability of frequency spectrum of maximization TVWS.
Claims (11)
1. a disturbance restraining method is characterized in that, is applied to the base station, comprising:
Receive the configuration information of TV TV launching tower, described configuration information comprises transmitting power, working frequency points, the position of TV launching tower and the tower height of TV launching tower of TV launching tower;
Judge according to the position of described configuration information and described base station and the tower height of described base station whether described base station is subjected to the interference of TV signal;
When described base station is subjected to the interference of TV signal, then obtain described TV launching tower to the Bo Dajiao of described base station according to described configuration information, to reach the angle according to described ripple described TV signal is carried out wave beam forming; Otherwise stop carrying out.
2. the method for claim 1 is characterized in that, described position and the tower height of described base station according to described configuration information and described base station judges that the interference whether described base station is subjected to the TV signal comprises:
According to the position of described TV launching tower and tower height and the position of described base station and the tower height of described base station of described TV launching tower, obtain described base station to the distance of described TV launching tower;
According to described distance, described transmitting power and described working frequency points, obtain described TV launching tower to the TV signal strength signal intensity of described base station;
When described TV signal strength signal intensity greater than predetermined threshold value, judge that then described base station is subjected to the interference of TV signal;
When described TV signal strength signal intensity is not more than described predetermined threshold value, judge that then described base station is not subjected to the interference of TV signal.
3. the method for claim 1 is characterized in that, describedly obtains described TV launching tower according to described configuration information and comprises to the Bo Dajiao of described base station:
According to the position of described TV launching tower and tower height and the position of described base station and the tower height of described base station of described TV launching tower, obtain described TV launching tower to the Bo Dajiao of described base station.
4. the method for claim 1 is characterized in that, described configuration information also comprises standard and corresponding pattern and the pilot type of described TV launching tower;
Correspondingly, describedly obtain described TV launching tower according to described configuration information and comprise to the Bo Dajiao of described base station:
Carry out channel estimating according to the standard of described TV launching tower and corresponding pattern thereof and pilot type;
Obtain described TV launching tower to the Bo Dajiao of described base station according to the channel that estimates.
5. the method for claim 1 is characterized in that, described wave beam forming is zero notch bundle figuration.
6. disturbance restraining method, it is characterized in that, the configuration information of TV launching tower is sent to the base station, so that described base station is when judging the interference that is subjected to the TV signal, obtain described TV launching tower to the Bo Dajiao of described base station according to described configuration information, to reach the angle according to described ripple described TV signal is carried out wave beam forming, described configuration information comprises transmitting power, working frequency points, the position of TV launching tower and the tower height of TV launching tower of described TV launching tower.
7. an interference suppression equipment is characterized in that, comprising:
Information receiving unit, for the configuration information of the TV TV launching tower that receives the database transmission, described configuration information comprises transmitting power, working frequency points, the position of TV launching tower and the tower height of TV launching tower of TV launching tower;
Disturb judging unit, be used for judging according to the position of described configuration information and described base station and the tower height of described base station whether described base station is subjected to the interference of TV signal;
Ripple reaches the angle acquiring unit, is used for being subjected to when described base station the interference of TV signal, then obtains described TV launching tower to the Bo Dajiao of described base station according to described configuration information;
Disturb and suppress the unit, be used for reaching the angle according to described ripple described TV signal is carried out wave beam forming.
8. device as claimed in claim 7 is characterized in that, described interference judging unit comprises:
Distance is obtained subelement, is used for according to the position of described TV launching tower and tower height and the position of described base station and the tower height of described base station of described TV launching tower, obtains described base station to the distance of described TV launching tower;
Signal strength signal intensity is obtained subelement, is used for according to described distance, described transmitting power and described working frequency points, obtains described TV launching tower to the TV signal strength signal intensity of described base station;
Judgment sub-unit is used for working as described TV signal strength signal intensity greater than predetermined threshold value, judges that then described base station is subjected to the interference of TV signal, when described TV signal strength signal intensity is not more than described predetermined threshold value, judges that then described base station is not subjected to the interference of TV signal.
9. device as claimed in claim 7 is characterized in that, described ripple reaches the angle acquiring unit and comprises:
First obtains subelement, is used for according to the position of described TV launching tower and tower height and the position of described base station and the tower height of described base station of described TV launching tower, obtains described TV launching tower to the Bo Dajiao of described base station.
10. device as claimed in claim 7 is characterized in that, described configuration information also comprises standard and corresponding pattern and the pilot type of described TV launching tower;
Correspondingly, described ripple reaches the angle acquiring unit and also comprises:
The channel estimating subelement is used for carrying out channel estimating according to the standard of described TV launching tower and corresponding pattern thereof and pilot type;
Second obtains subelement, is used for obtaining described TV launching tower to the Bo Dajiao of described base station according to the channel that estimates.
11. interference suppression equipment, it is characterized in that, be used for the configuration information of TV launching tower is sent to the base station, so that described base station is when judging the interference that is subjected to the TV signal, obtain described TV launching tower to the Bo Dajiao of described base station according to described configuration information, to reach the angle according to described ripple described TV signal is carried out wave beam forming, described configuration information comprises transmitting power, working frequency points, the position of TV launching tower and the tower height of TV launching tower of described TV launching tower.
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| WO2019127293A1 (en) * | 2017-12-28 | 2019-07-04 | 海能达通信股份有限公司 | Frequency spectrum resource scheduling method and device |
| WO2020228090A1 (en) * | 2019-05-10 | 2020-11-19 | 苏州全波通信技术股份有限公司 | White space optimization method employing enhanced adjacent frequencies |
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| WO2011043298A1 (en) * | 2009-10-05 | 2011-04-14 | 住友電気工業株式会社 | Base station apparatus and interference suppressing method |
| CN102355671A (en) * | 2011-08-17 | 2012-02-15 | 电信科学技术研究院 | Available frequency spectrum determination method and equipment |
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| US20100309806A1 (en) * | 2009-06-08 | 2010-12-09 | Wi-Lan, Inc. | Peer-To-Peer Control Network For A Wireless Radio Access Network |
| WO2011043298A1 (en) * | 2009-10-05 | 2011-04-14 | 住友電気工業株式会社 | Base station apparatus and interference suppressing method |
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| WO2019127293A1 (en) * | 2017-12-28 | 2019-07-04 | 海能达通信股份有限公司 | Frequency spectrum resource scheduling method and device |
| WO2020228090A1 (en) * | 2019-05-10 | 2020-11-19 | 苏州全波通信技术股份有限公司 | White space optimization method employing enhanced adjacent frequencies |
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Effective date of registration: 20211223 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: Super fusion Digital Technology Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |