CN103702091A - Wireless portable video monitoring system and networking method thereof - Google Patents
Wireless portable video monitoring system and networking method thereof Download PDFInfo
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- CN103702091A CN103702091A CN201410005738.7A CN201410005738A CN103702091A CN 103702091 A CN103702091 A CN 103702091A CN 201410005738 A CN201410005738 A CN 201410005738A CN 103702091 A CN103702091 A CN 103702091A
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- 230000006855 networking Effects 0.000 title claims abstract description 13
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Abstract
The invention discloses a wireless portable video monitoring system and a networking method thereof. Ad-hoc network relay base stations in an ad-hoc network relay base station group are wirelessly connected with one another, so that the relaying capability of data transmission is improved, and the data transmission distance is extended; each ad-hoc network relay base station can be wirelessly accessed by a video front end and can also be accessed by a monitoring client-side in a wired way, so that flexible networking among the video front end, the ad-hoc network relay base stations and the monitoring client-side can be realized, and the data transmission distance and the access capacity of the video front end are improved; during networking, the video front end is connected with each ad-hoc network relay base station through a receiving working frequency point set in the ad-hoc network relay base station, and ad-hoc network relay base stations are connected through a sending working frequency point, so that multi-frequency transmission is realized, and in addition, the ad-hoc network relay base stations can realize asymmetrical network transmission and dynamic bandwidth allocation by adjusting the receiving working frequency points, so that the network utilization is improved to the greatest extent.
Description
Technical field
The present invention relates to field of video monitoring, relate in particular to a kind of portable wireless video monitoring system and network-building method thereof.
Background technology
Portable wireless video monitoring mainly adopts 3G wireless supervisory control system or wireless individual supervisory control system at present.
3G wireless video monitoring system of the prior art consists of front-end collection encoding device, monitoring management platform and monitor client; Data interaction between monitoring management platform and front-end collection encoding device and monitor client is transmitted by 3G wireless network; But because 3G wireless transmission is to pass through common signal channel, the total bandwidth of transfer of data is not enough, in existing 3G wireless network standards, upstream rate is 1.8Mbps to the maximum, the maximum 3.1Mbps of downstream rate, and the code stream of the clear compressed video of a road sign is at 256K-512Kbps, more than the high definition compressed video bit stream of one road 720P needs 2Mbps, so utilize 3G wireless network to carry out video data transmitting, picture quality is not high, time delay is larger, and image continuity cannot guarantee, cannot meet the needs that rely on live video monitoring to command; Moreover, utilize 3G wireless network transmissions not only need to place server at operator place, also need to hand over extra campus network, and the vehicle-mounted or individual soldier's mode of the many employings of front-end collection encoding device, therefore, can only work in 3G signal and cover good region.
Wireless individual supervisory control system of the prior art comprises front end IMAQ encoding device, base station and monitor client; Wherein, front end IMAQ encoding device in wireless individual supervisory control system adopts COFDM(coded orthogonal frequency division multiplexing conventionally, Coded Orthogonal Frequency Division Multiplexing (COFDM)) modulation system is carried out modulating-coding to video data, utilizes the base station that is operated in 336-344M common frequency band to monitor client, to carry out the transmission of video data; Adopt COFDM wireless individual supervisory control system, can realize the maximum image that simultaneously transmits 1 to 2 road D1 form of realizing in the frequency range of 8M; Because front end IMAQ encoding device adopts backpack mobile device more, therefore the base station in this system generally adopts great Qu coverage mode, and antenna for base station is overhead, the high-power transmitting of wireless front end, rely on the good diffracting power of 340MHz radio wave, realize the radio in larger region is covered.But adopt COFDM wireless individual supervisory control system, its transmission bandwidth is generally 2M at present, the video capacity that can transmit is limited, and due to frequency limited, cannot carry out dilatation, quantity to front end IMAQ encoding device has obvious restriction, is only suitable for front end IMAQ encoding device quantity few and to the less demanding occasion of video quality.
Summary of the invention
The invention provides a kind of portable wireless video monitoring system and network-building method thereof, can realize asymmetric transmission and quickly networking and best Routing identification, guaranteeing provides stable bandwidth and healthy and strong network environment for HD video transmission.
The technological means that the present invention adopts is as follows: portable wireless video monitoring system, comprises video front, MANET relay base station group and monitor client; Described MANET relay base station group comprise at least two can by described video front wireless access, and can be by the MANET relay base station of described monitor client access in radio, and, between MANET relay base station by wireless connections; One of them in described at least two MANET relay base station of described video front wireless access; One of them in described at least two MANET relay base station of described monitor client access in radio.
Further, between the MANET relay base station in described MANET relay base station group, adopt multi-stage cascade to connect.
The present invention also provides a kind of network-building method based on portable wireless video monitoring system, and described portable wireless video monitoring system comprises video front, MANET relay base station group and monitor client; Described MANET relay base station group comprise at least two can by described video front wireless access, and can be by the MANET relay base station of described monitor client access in radio, and, between MANET relay base station by wireless connections; One of them in described at least two MANET relay base station of described video front wireless access; One of them in described at least two MANET relay base station of described monitor client access in radio; Described network-building method comprises:
MANET relay base station initialization step: near the signal strength signal intensity size each frequency of MANET relay base station scanning radio band, select the frequency of signal strength signal intensity minimum as receiving working frequency points;
The initialization information of MANET relay base station broadcast MANET relay base station, described initialization information comprises reception working frequency points and the configuration information of this MANET relay base station;
Video front and MANET relay base station Connection Step: video front is obtained from the initialization information of networking relay base station broadcast, and according to the configuration information in initialization information, select the MANET relay base station that matches with the setting of video front to be connected by the reception working frequency points of this MANET relay base station;
Connection Step between MANET relay base station: MANET relay base station is obtained from the initialization information of other MANET relay base station broadcast in networking relay base station group, according to configuration information in initialization information, select the MANET relay base station of mating with local MANET relay base station configuration information, the reception working frequency points of this MANET relay base station of usining is connected with this MANET relay base station as the transmission working frequency points of local MANET relay base station.
Further, in described video front and MANET relay base station Connection Step, when the configuration information in a plurality of MANET relay base station initialization informations and the setting of video front match, video front selects the highest MANET relay base station of initialization information signal strength signal intensity to carry out wireless connections.
Further, when local MANET relay base station is during respectively with video front and other MANET relay base station wireless connections, local MANET relay base station inquire about itself and video front wireless connections reception working frequency points and with the transmission working frequency points of other MANET relay base station wireless connections, when the reception working frequency points of local MANET relay base station with send working frequency points when identical, local MANET relay base station is revised it and is received working frequency points, and amended reception working frequency points information is sent to the video front being connected with local MANET relay base station, video front is connected by amended reception working frequency points with local MANET relay base station,
When local MANET relay base station is during only with other MANET relay base station wireless connections, local MANET relay base station is inquired about it and is received working frequency points and send working frequency points, when its reception working frequency points is identical with transmission working frequency points, local MANET relay base station is revised it and is received working frequency points, and amended reception working frequency points information is sent to other MANET relay base station that are connected by receiving before working frequency points with local MANET relay base station, and other MANET relay base station that connect to receive before working frequency points by the wireless connections of amended reception working frequency points.
Further, local MANET is preset with and receives frequency connection number threshold value, when local MANET relay base station is connected number threshold value by receiving the number of frequency wireless connections over described reception frequency with video front respectively, local MANET relay base station arranges the second reception working frequency points, and specified portions video front is connected with local MANET relay base station by described the second reception working frequency points.
Adopt portable wireless video monitoring system provided by the present invention and network-building method thereof, the mutual wireless connections of MANET relay base station due in MANET relay base station group, have improved the ability of the relaying relay of transfer of data, have expanded the transmission range of data; And because each MANET relay base station all can be by video front wireless access, also can monitored client access in radio, therefore can realize the flexible networking between video front, MANET relay base station and monitor client, improve the access capacity of transmission range and the video front of data; When networking, video front is connected with the reception working frequency points that MANET relay base station is set by this MANET relay base station, thereby by sending working frequency points connection, realized multifrequency transmission between MANET relay base station, and MANET relay base station can receive working frequency points by adjusting and realize asymmetrical network and transmit, Dynamic Bandwidth Allocation, increases network utilization to greatest extent.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of portable wireless video monitoring system of the present invention;
Fig. 2 is the network-building method flow chart that the present invention is based on portable wireless video monitoring system.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
A portable wireless video monitoring system, as shown in Figure 1, comprises video front, MANET relay base station group and monitor client;
Wherein, MANET relay base station group comprise at least two can be by video front wireless access, and MANET relay base station that can monitored client access in radio, and, between MANET relay base station by wireless connections;
One of them at least two MANET relay base station of video front wireless access;
One of them at least two MANET relay base station of described monitor client access in radio.
Wherein, between MANET relay base station, preferably adopt the connected mode of multi-stage cascade.
Based on above-mentioned portable wireless video monitoring system, the present invention also provides a kind of network-building method, as shown in Figure 2, comprising:
MANET relay base station initialization step: near the signal strength signal intensity size each frequency of MANET relay base station scanning radio band, select the frequency of signal strength signal intensity minimum as receiving working frequency points; The frequency of selecting signal strength signal intensity minimum can ensure that as receiving working frequency points MANET relay base station avoids co-channel interference as far as possible;
The initialization information of MANET relay base station broadcast MANET relay base station, described initialization information comprises reception working frequency points and the configuration information of this MANET relay base station;
Video front and MANET relay base station Connection Step: video front is obtained from the initialization information of networking relay base station broadcast, and according to the configuration information in initialization information, select the MANET relay base station that matches with the setting of video front to be connected by the reception working frequency points of this MANET relay base station; Preferably, when the configuration information in a plurality of MANET relay base station initialization informations and the setting of video front match, video front selects the highest MANET relay base station of initialization information signal strength signal intensity to carry out wireless connections, to ensure the transmission quality of video data;
Connection Step between MANET relay base station: MANET relay base station is obtained from the initialization information of other MANET relay base station broadcast in networking relay base station group, according to configuration information in initialization information, select the MANET relay base station of mating with local MANET relay base station configuration information, the reception working frequency points of this MANET relay base station of usining is connected with this MANET relay base station as the transmission working frequency points of local MANET relay base station.
Consider for a MANET relay base station, the work that it need to complete receiving video data and send video data, do not considering two-way procotol expense, based on fixed transmission bandwidth, receiving and sending is to share fixed transmission bandwidth, therefore, equipment of every access (video front or MANET relay base station) in MANET relay base station, bandwidth will occupied this device bandwidth twice, to meet the needs of receiving video data and transmission video data, therefore, in network-building method provided by the invention, preferably adopt the mode of multifrequency transmission, MANET relay base station is differed from for sending the transmission working frequency points of video data for the reception working frequency points of receiving video data, receiving video data and receiving video data are completed at different frequencies, avoid the reception of video data and send using same bandwidth, and then can increase the access amount of video data.
Concrete, can, after MANET completes, increase following steps:
For a kind of situation, be local MANET relay base station respectively with video front and other MANET relay base station wireless connections, now, local MANET relay base station inquire about itself and video front wireless connections reception working frequency points and with the transmission working frequency points of other MANET relay base station wireless connections, when the reception working frequency points of local MANET relay base station with send working frequency points when identical, local MANET relay base station is revised it and is received working frequency points, and amended reception working frequency points information is sent to the video front being connected with local MANET relay base station, video front is connected by amended reception working frequency points with local MANET relay base station,
For another kind of situation, be local MANET relay base station only with other MANET relay base station wireless connections, now, local MANET relay base station is inquired about it and is received working frequency points and send working frequency points, when its reception working frequency points is identical with transmission working frequency points, local MANET relay base station is revised it and is received working frequency points, and amended reception working frequency points information is sent to other MANET relay base station that are connected by receiving before working frequency points with local MANET relay base station, and other MANET relay base station that connect to receive before working frequency points by the wireless connections of amended reception working frequency points.
By above-mentioned setting, can make the frequency of local MANET relay base station receiving video data and the frequency that sends video data distinguish, the two does not take common frequency bandwidth, can avoid the co-channel interference in local MANET relay base station yet.
Further, based on above-mentioned portable wireless video monitoring system, video front only connects in a MANET relay base station, and a MANET relay base station that connects video front can connect a plurality of video front, therefore, the video front number of connection that may occur being operated in same reception working frequency points is too many, the problem that causes video data transmitting to block up, for this problem, the present invention further can, after MANET completes, increase following steps:
Local MANET is preset with and receives frequency connection number threshold value, when local MANET relay base station is connected number threshold value by receiving the number of frequency wireless connections over described reception frequency with video front respectively, local MANET relay base station arranges the second reception working frequency points, and specified portions video front is connected with local MANET relay base station by described the second reception working frequency points.So, can make a plurality of video front that are connected to same MANET relay base station utilize different reception working frequency points uploaded videos data, avoided receiving the band-limited problem of working frequency points due to one, and then can adjust flexibly according to actual conditions, increase network utilization to greatest extent.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (6)
1. a portable wireless video monitoring system, is characterized in that, comprises video front, MANET relay base station group and monitor client; Described MANET relay base station group comprise at least two can by described video front wireless access, and can be by the MANET relay base station of described monitor client access in radio, and, between MANET relay base station by wireless connections; One of them in described at least two MANET relay base station of described video front wireless access; One of them in described at least two MANET relay base station of described monitor client access in radio.
2. the wireless video monitoring according to claim 1 system of deploying troops on garrison duty fast, is characterized in that, adopts multi-stage cascade to connect between the MANET relay base station in described MANET relay base station group.
3. the network-building method based on portable wireless video monitoring system, is characterized in that, described portable wireless video monitoring system comprises video front, MANET relay base station group and monitor client; Described MANET relay base station group comprise at least two can by described video front wireless access, and can be by the MANET relay base station of described monitor client access in radio, and, between MANET relay base station by wireless connections; One of them in described at least two MANET relay base station of described video front wireless access; One of them in described at least two MANET relay base station of described monitor client access in radio; Described network-building method comprises:
MANET relay base station initialization step: near the signal strength signal intensity size each frequency of MANET relay base station scanning radio band, select the frequency of signal strength signal intensity minimum as receiving working frequency points;
The initialization information of MANET relay base station broadcast MANET relay base station, described initialization information comprises reception working frequency points and the configuration information of this MANET relay base station;
Video front and MANET relay base station Connection Step: video front is obtained from the initialization information of networking relay base station broadcast, and according to the configuration information in initialization information, select the MANET relay base station that matches with the setting of video front to be connected by the reception working frequency points of this MANET relay base station;
Connection Step between MANET relay base station: MANET relay base station is obtained from the initialization information of other MANET relay base station broadcast in networking relay base station group, according to configuration information in initialization information, select the MANET relay base station of mating with local MANET relay base station configuration information, the reception working frequency points of this MANET relay base station of usining is connected with this MANET relay base station as the transmission working frequency points of local MANET relay base station.
4. method according to claim 3, it is characterized in that, in described video front and MANET relay base station Connection Step, when the configuration information in a plurality of MANET relay base station initialization informations and the setting of video front match, video front selects the highest MANET relay base station of initialization information signal strength signal intensity to carry out wireless connections.
5. method according to claim 4, it is characterized in that, when local MANET relay base station is during respectively with video front and other MANET relay base station wireless connections, local MANET relay base station inquire about itself and video front wireless connections reception working frequency points and with the transmission working frequency points of other MANET relay base station wireless connections, when the reception working frequency points of local MANET relay base station with send working frequency points when identical, local MANET relay base station is revised it and is received working frequency points, and amended reception working frequency points information is sent to the video front being connected with local MANET relay base station, video front is connected by amended reception working frequency points with local MANET relay base station,
When local MANET relay base station is during only with other MANET relay base station wireless connections, local MANET relay base station is inquired about it and is received working frequency points and send working frequency points, when its reception working frequency points is identical with transmission working frequency points, local MANET relay base station is revised it and is received working frequency points, and amended reception working frequency points information is sent to other MANET relay base station that are connected by receiving before working frequency points with local MANET relay base station, and other MANET relay base station that connect to receive before working frequency points by the wireless connections of amended reception working frequency points.
6. method according to claim 5, it is characterized in that, local MANET is preset with and receives frequency connection number threshold value, when local MANET relay base station is connected number threshold value by receiving the number of frequency wireless connections over described reception frequency with video front respectively, local MANET relay base station arranges the second reception working frequency points, and specified portions video front is connected with local MANET relay base station by described the second reception working frequency points.
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| CN201410005738.7A CN103702091B (en) | 2014-01-07 | 2014-01-07 | A kind of network-building method of wireless portable video monitoring system |
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| CN201410005738.7A CN103702091B (en) | 2014-01-07 | 2014-01-07 | A kind of network-building method of wireless portable video monitoring system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104378766A (en) * | 2014-10-27 | 2015-02-25 | 北京有恒斯康通信技术有限公司 | Method and device for base station ad-hoc network |
| CN106454265A (en) * | 2016-11-10 | 2017-02-22 | 江苏中利电子信息科技有限公司 | Portable ad-hoc network monitoring system |
| CN107514287A (en) * | 2017-08-15 | 2017-12-26 | 黑龙江科技大学 | Emergency management and rescue route reconnaissance system after the calamity of colliery |
| CN107872811A (en) * | 2016-09-28 | 2018-04-03 | 联芯科技有限公司 | It is determined that the method and apparatus for frequency of arranging net |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4531683B2 (en) * | 2005-11-16 | 2010-08-25 | パナソニック株式会社 | Wireless communication apparatus and ad hoc route information acquisition method |
| CN101232420B (en) * | 2008-02-27 | 2012-09-05 | 南京新联电子股份有限公司 | Wireless networking method of electric power data acquisition system |
| CN101707795B (en) * | 2009-07-31 | 2012-05-23 | 重庆重邮信科通信技术有限公司 | Method for eliminating interference between self-organized network base station nodes |
| CN203466918U (en) * | 2013-09-17 | 2014-03-05 | 北京蛙视通信技术有限责任公司 | Rapid defence organization system for wireless video monitoring |
-
2014
- 2014-01-07 CN CN201410005738.7A patent/CN103702091B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104378766A (en) * | 2014-10-27 | 2015-02-25 | 北京有恒斯康通信技术有限公司 | Method and device for base station ad-hoc network |
| CN107872811A (en) * | 2016-09-28 | 2018-04-03 | 联芯科技有限公司 | It is determined that the method and apparatus for frequency of arranging net |
| CN107872811B (en) * | 2016-09-28 | 2021-05-28 | 联芯科技有限公司 | Method and device for determining network distribution frequency point |
| CN106454265A (en) * | 2016-11-10 | 2017-02-22 | 江苏中利电子信息科技有限公司 | Portable ad-hoc network monitoring system |
| CN107514287A (en) * | 2017-08-15 | 2017-12-26 | 黑龙江科技大学 | Emergency management and rescue route reconnaissance system after the calamity of colliery |
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