CN201528424U - Vehicle-mounted emergency communication system - Google Patents
Vehicle-mounted emergency communication system Download PDFInfo
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- CN201528424U CN201528424U CN200920217565XU CN200920217565U CN201528424U CN 201528424 U CN201528424 U CN 201528424U CN 200920217565X U CN200920217565X U CN 200920217565XU CN 200920217565 U CN200920217565 U CN 200920217565U CN 201528424 U CN201528424 U CN 201528424U
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- communication system
- emergency communication
- switch device
- mounted emergency
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Abstract
The utility model provides a vehicle-mounted emergency communication system comprising a service server, a switch device and a wireless network bridge, wherein the service server is connected with the switch device and used for receiving service data and sending the service data to the switch device; the switch device is connected with the wireless network bridge and used for collecting the service data and sending the service data to the wireless network bridge; and the wireless network bridge is connected with a base station device and used for sending the service data to the base station device through the wireless mode. The vehicle-mounted emergency communication system fully utilizes the existing wireless communication network, thereby reducing the cost of data transmission and improving the speed and quality of the data transmission.
Description
Technical field
The utility model relates to communications industry transmission and IP technical field, relates in particular to vehicle-mounted emergency communication system.
Background technology
Emergency communication vehicle is different from the standard that the public network mobile communication is used, business such as the wireless video that is provided, wireless speech, colony dispatching all are carried on the special-purpose terminal, and the target market is applied as natural calamity, accident, communication network interruption, the radio communication when needing the personal communication system scene take place.
Fig. 1 is the schematic diagram of the vehicle-mounted emergency communication system operation principle of prior art.As shown in Figure 1, the operation system that is associated with vehicle-mounted emergency communication system comprises ground command center, satellite communication, McWiLL radio communication, multi-service job-oriented terminal, hand-held dispatch terminal etc.The function that vehicle-mounted emergency communication system mainly realizes is as follows: ground command center communicates by letter with on-the-spot voice scheduling with Emergency communication vehicle secondary distributed scheduling commander, live video passback, Vehicular video monitoring, command centre, Evaluation in Field Communication Systems, emergent multimedia conferencing function, remote data communication function, cluster intercommunication, multi-service job-oriented terminal.The equipment such as power-supply system, voice gateways, video server, on-the-spot PSTN interface, GSM/CDMA radio network gateway that are provided with in the Emergency communication vehicle are to receive multi-service data.
In realizing process of the present utility model, the inventor finds that there is following defective in present vehicle-mounted emergency communication system: mainly be to rely on the satellite communication passage to carry out the transmission of data, cost is too high, and bandwidth is low, makes multiple services transmission quality and transmission speed all be affected.
The utility model content
The purpose of this utility model is only to rely on satellite communication channel to carry out the defective of transfer of data at vehicle-mounted emergency communication system in the prior art, provides a kind of existing wireless communications network that utilizes, as the vehicle-mounted emergency communication system of GSM network, 3G network.
For achieving the above object, according to an aspect of the present invention, a kind of vehicle-mounted emergency communication system is provided, comprise: service server, switch device, wireless bridge, wherein: service server, link to each other with switch device, be used to receive business datum, and business datum is sent to switch device; Switch device links to each other with wireless bridge, is used for the convergence service data, and business datum is forwarded to wireless bridge; Wireless bridge links to each other with base station equipment, is used for business datum is sent to base station equipment by wireless mode.
Preferably, in the technical program, service server comprises: video traffic server, speech business server, private network service server and/or WLAN (wireless local area network) service server.
Preferably, in the technical program, switch device links to each other with service server by vlan port.
Preferably, in the technical program, the QOS strategy that switch device is different to different traffic assignments; Different QOS strategies comprise: be different traffic assignments corresponding bandwidth; And/or be the different different COS values of traffic assignments.
Preferably, in the technical program, but wireless bridge is a diffraction non line of sight wireless bridge.
Preferably, in the technical program, in switch device first line of a couplet TRUNK mouth configuration traffic shaping function.
Preferably, in the technical program, wireless mode is a microwave mode.
The utility model provides a kind of vehicle-mounted emergency communication system, comprises equipment such as switch device, wireless bridge, thereby has made full use of existing cordless communication network, has reduced the cost of transfer of data, has improved the speed and the quality of transfer of data.
Other features and advantages of the utility model will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the utility model.The purpose of this utility model and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is the schematic diagram of the vehicle-mounted emergency communication system operation principle of prior art;
Fig. 2 is the structural representation of the embodiment of the invention one vehicle-mounted emergency communication system;
Fig. 3 is the networking schematic diagram of the embodiment of the invention one vehicle-mounted emergency communication system;
Fig. 4 is the networking schematic diagram of the embodiment of the invention two vehicle-mounted emergency communication systems.
Embodiment
Further specify embodiment of the present utility model below in conjunction with accompanying drawing.
Embodiment one
Fig. 2 is the structural representation of the embodiment of the invention one vehicle-mounted emergency communication system.As shown in Figure 2, vehicle-mounted emergency communication system comprises: service server, switch device, wireless bridge, wherein: service server, link to each other with described switch device, be used to receive business datum, and described business datum is sent to switch device; Switch device links to each other with described wireless bridge, is used to converge described business datum, and described business datum is forwarded to wireless bridge; Wireless bridge links to each other with base station equipment, is used for described business datum is sent to base station equipment by wireless mode.
In the present embodiment, service server comprises: video traffic server, speech business server, private network service server and/or WLAN (wireless local area network) service server.Switch device links to each other with described service server by vlan port, mainly carries out converging and data forwarding of miscellaneous service packet.Wireless bridge, but diffraction high bandwidth wireless bridge adopted, its area coverage is 60 degree sector regions, its effect is the transmission of carrying out data by microwave mode.Wireless bridge is to use in pairs, promptly in vehicle-mounted emergency communication system one end is installed, and in base station side one end is installed.In addition, in the present embodiment, wireless mode is a microwave mode.
The video traffic server mainly refers to the video monitoring terminal, the first-class equipment of making a video recording.The speech business server comprises the equipment that speech business is provided, for example mobile phone terminal.The private network service server is the equipment that service is provided at the dedicated network business specially, dedicated network such as railway system's private network, public security system private network, flood control private network, military private network etc.WLAN (wireless local area network) service server (Wireless Local Area Network, be called for short WLAN server) indication be exactly AP equipment, its function is for to cover the demand place with data-signal by the wireless signal mode.
Fig. 3 is the networking schematic diagram of the embodiment of the invention one vehicle-mounted emergency communication system.As shown in Figure 3, between vehicle-mounted emergency communication system and the base station by high bandwidth (25M) but the diffraction wireless bridge comes transmit traffic data.Base station and core engine room as SDH, the Internet, video server, voice network etc., utilize the MSTP mode to finish business data transmission by transmission network; The different vlan ports of the switch device of installing in the core machine room link to each other with video server, the Internet, voice gateways and internal server respectively to distinguish the business of video, WLAN, voice and private network.
In the utility model, according to having the high upstream bandwidth that transmission network provides now, transmission equipments such as switch device and wireless bridge in vehicle-mounted emergency communication system, have been disposed, except that can the applied satellite channel, can also use existing transmission network communicates, thereby make integrated data communication become very easy, reduced the transmission cost of integrated data, improved transmission speed and quality.
Embodiment two
Fig. 4 is the networking schematic diagram of the embodiment of the invention two vehicle-mounted emergency communication systems.As shown in Figure 4, in the present embodiment, vehicle-mounted emergency communication system adopts 5.8GHz high bandwidth (can utilize bandwidth 25M) but diffraction non line of sight wireless bridge.By the login wireless bridge device, can inquire about data link link between the wireless bridge of base station and vehicle-mounted emergency communication system and build whether success, reach link bandwidth situation at that time.In addition, above-mentioned bridge equipment has mechanism such as intelligent frequency adjustment and intelligent orthogonal frequency modulation, can solve the interference problem in the transmission course.
The processing of the business datum of vehicle-mounted emergency communication system is adopted H.264 compression standard as video compression, video compression bit rate output 64Kbps.By WLAN, voice, video, four kinds of required technical requirements of business of private network are analyzed, the required bandwidth requirement of WLAN is higher, requires general to time-delay, jitter conditions; Speech business is had relatively high expectations to time-delay, shake, and is not high to bandwidth requirement; Video is had relatively high expectations to the packet loss of network, and it is little to delay time; Private network specification requirement and WLAN require similar.According to the technical characterstic of above analysis,, arrange different qos policys in the switch device corresponding ports.
By above-mentioned analysis, can be divided into two kinds to the priority treatment QoS design of the data of business, a kind of is to be different traffic assignments corresponding bandwidth, ensured that by bandwidth Design in data the congested various data of situation taking place carries out data forwarding according to the bandwidth of design, has ensured the basic rate of every kind of data.Second kind of design is exactly to be the different different COS values of traffic assignments, by the high priority treatment of design COS value guarantee to the data of delay-sensitive.
In conjunction with present embodiment, be that 25M is an example with the microwave wireless bandwidth of wireless bridge, concrete bandwidth is set to: the WLAN data bandwidth is set to 10M; The video data bandwidth is set to 10M; The speech data bandwidth is set to 2M; Private network is set to 3M; By on vehicle-mounted switch device and core switch equipment, disposing the reference bandwidth of Various types of data by modes such as CBWFQ.In addition, how many concrete divisions can also be adjusted according to each professional terminal access amount of reality at scene.
In conjunction with present embodiment, the COS value of different business is designed: speech data bandwidth COS value is 6; Private network data bandwidth COS is 6; Video data bandwidth COS value is 5; WLAN data bandwidth COS value is 4.In conjunction with Fig. 4, as can be seen, after business datum arrives core-network side from vehicle-mounted emergency communication system, need pass through three layers of routing forwarding from core network switches equipment to all kinds of servers, so need on core network switches equipment, dispose the mapping of Cos → Dscp, ensure the QoS of data in passing through IP routing forwarding process, specifically, mapping is designed to: Cos:4 → dscp 26; Cos:5 → dscp38; Cos:6 → dscp 48.
Because the interconnected access bandwidth that is lower than gigabit that adopted of vehicle-mounted switch device and directed bridge, in order to make full use of wireless bandwidth, avoid because the existence of burst flow causes the serious situation of data packet loss, by carrying out " traffic shaping " functional configuration at vehicle-mounted switch device first line of a couplet Trunk mouth, the data behind the traffic shaping are carried out to directed bridge transmission with the highest level and smooth 25M flow.
Present embodiment to the processing of the annexation of each business datum receiving equipment in the vehicle-mounted emergency communication system, business datum, and the service quality guarantee mechanism of the business data transmission set according to business characteristic be described in detail, whole beneficial effects with embodiment one, and exploitativeness is stronger.
It should be noted that at last: above embodiment only in order to the explanation the utility model and and the described technical scheme of unrestricted the utility model; Therefore, although this specification has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technical scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the claim scope of the present utility model.
Claims (7)
1. a vehicle-mounted emergency communication system is characterized in that, comprising: service server, switch device, wireless bridge, wherein: service server, link to each other with described switch device, be used to receive business datum, and described business datum is sent to switch device; Switch device links to each other with described wireless bridge, is used to converge described business datum, and described business datum is forwarded to wireless bridge; Wireless bridge links to each other with base station equipment, is used for described business datum is sent to base station equipment by wireless mode.
2. vehicle-mounted emergency communication system according to claim 1 is characterized in that, described service server comprises: video traffic server, speech business server, private network service server and/or WLAN (wireless local area network) service server.
3. vehicle-mounted emergency communication system according to claim 2 is characterized in that, described switch device links to each other with described service server by vlan port.
4. vehicle-mounted emergency communication system according to claim 2 is characterized in that, the QOS strategy that described switch device is different to different traffic assignments; Described different QOS strategy comprises: be different traffic assignments corresponding bandwidth; And/or be the different different COS values of traffic assignments.
5. according to each described vehicle-mounted emergency communication system among the claim 1-4, it is characterized in that, but described wireless bridge is a diffraction non line of sight wireless bridge.
6. according to each described vehicle-mounted emergency communication system among the claim 1-4, it is characterized in that, in described switch device first line of a couplet TRUNK mouth configuration traffic shaping function.
7. according to each described vehicle-mounted emergency communication system among the claim 1-4, it is characterized in that described wireless mode is a microwave mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920217565XU CN201528424U (en) | 2009-09-27 | 2009-09-27 | Vehicle-mounted emergency communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920217565XU CN201528424U (en) | 2009-09-27 | 2009-09-27 | Vehicle-mounted emergency communication system |
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| Publication Number | Publication Date |
|---|---|
| CN201528424U true CN201528424U (en) | 2010-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920217565XU Expired - Lifetime CN201528424U (en) | 2009-09-27 | 2009-09-27 | Vehicle-mounted emergency communication system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102724481A (en) * | 2012-06-12 | 2012-10-10 | 浙江大学 | Video monitoring system for city water supply reservoir |
-
2009
- 2009-09-27 CN CN200920217565XU patent/CN201528424U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102724481A (en) * | 2012-06-12 | 2012-10-10 | 浙江大学 | Video monitoring system for city water supply reservoir |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100714 |