subject: Satellite Broadband Communications In Emergency And Disaster Backup Application [print this page] Author: Wen / Zhu double Shiyong New China Dragon Satellite Communicate Group
2008 spring snowstorms and the South occurred in 5.12 Wenchuan earthquake, emergency communications and disaster on our backup communications system poses a severe test. In these two great natural disasters, the disaster area communications network is basically associated with infrastructure (such as Cable , Copper, wireless base stations, switching equipment, engine room) of the damage and the paralysis of power supply interruption. Not only that, due to traffic disruption caused by disasters at the same time, resulting in peacetime to prepare contingency plans also because communication equipment, vehicles and personnel can not enter and difficult to implement. So two in common disaster in the disaster just happened, the outside world most needs to know the disaster, the disaster areas affected most like to report the situation to the higher critical time, communication could not play its due role. This is so, an important reason for this is our lack of disaster backup communications system planning and construction.
1, emergency communications and disaster backup on the similarities and differences between communication
Theory, disaster backup communications should be subordinate to the broader emergency communications, but here, in order to emphasize the importance of disaster backup system, we prefer to separate the two explained.
This paper, emergency communications (narrow) is defined: in the event of major disasters, causing local damage to the existing situation of communication facilities, through a temporary means of communication to restore local communications; or in exceptional circumstances, the Government instruction or in need of no means of communication in the original area to provide temporary means of communication behavior. Following is the proposed "emergency communications" are the narrow conception.
Backup for disaster communications, mainly refers to the design of communication systems in the building and when the main means of communication at the same time by using a means of communication as a mainstream means of communication back and added, when the main means of communication for any disaster is interrupted, be able to use the backup tool to protect the most basic communication needs of the behavior.
Emergency communications and disaster backup communications have in common is that they are the main means of communication in disasters or other reasons for the case of blocking or units for the affected areas to provide temporary means of communication links. Difference is that emergency communications are often interrupted after the original means of communication, and then use other means to restore communications including the restoration of the mainstream of communications network. Therefore, the nature of the emergency communications major is too late; and disaster backup communications in the disaster before the mainstream means of communication disruptions may be prepared to protect the relevant areas or units of the communication by the disaster in, can not be blocked and maintain a minimum of external links. Therefore, the nature of disaster backup communications are more proactive. Emergency communications and disaster communications between backup should be complementary to each other are essential.
2, natural disasters on the main block of communication networks
According to the South occurred in the spring of 2008 and the 5.12 earthquake snowstorm of the actual situation, natural disasters, disruption of the main reasons leading to the following communications 4:00.
(1) disaster led to infrastructure (such as cable, copper, wireless base stations, switching equipment, engine room) of damage to the disaster area communication networks, especially the main communication lines with the outside world were cut off;
(2) disasters cause power outages, leading to paralysis of communication facilities;
(3) disasters also caused traffic disruption, make pre-prepared emergency communications equipment and difficult to enter the site;
(4) disasters in the affected areas fear the people, so even if the local communication network has not been damaged, also due to extensive, far more than the local access network design load of calls and telephone traffic and bring down the network. Makes the information difficult to send the most urgent.
The same time, the two disasters, according to the actual situation, just when disaster occurs, these four events although to different degrees, but often occur simultaneously, not only make the original disaster communications network paralysis, but also makes use of means of emergency communication restoration of disaster emergency communications has become very difficult, the result is disaster for a long time unable to resume normal communication to the outside world.
Satellite Broadband Communications In Emergency And Disaster Backup Application
