The Application Of WLAN Technology In Dezhou Postal Communication Network

WLAN is a product of the combination of computer network and correspondence technique. From the professional perspective, WLAN makes use of an effective way of Wireless Multiaddress Channel to support communications between computers, and makes it possible for the mobility and personality of communication, and also for the Multimedia Applications. To put it in simple terms, Wireless local-area network provides Ethernet or Token Network functions without using traditional cable at the same time .More and more enterprises come to apply and concern WLAN technology because it is flexible, easy to install, easy to maintain and easy to expand. The standard of WLAN is mainly the serial standard of IEEE 802.11, among which 802.11a, 802.11b and 802.11g are more influential. There are two kinds of WLAN network topology: PEER TO PEER and HUB-BASED. And there are three forms in outdoor transmission: point-to-point, point-to-multi-point and hybrid.Dezhou Post Office network has transmitted data through leased lines from Communications Company for a long time, which has many disadvantages. Besides, it is not economical as well. In this case, the idea of building up their own wireless networks was come up. Their recent goal is to achieve wireless data transmission among each of the county branch and between each county branch and the Central Bureau.The article takes the representative Ling County wireless network as example to explain the postal construction of a wireless network in a county. The construction of wireless network in Ling County adopted the point-to-multi-point network topology. We employed the DSSS products which were fast, capable of anti-interference and long distance transmission, and had the advantage in price. By comparing the parameters of two products, we chose the RB-DS.11 series products of Alvarion. After the construction, its transmission performance, stability, response time had been put into strict tests. The network has worked well, and can fully meet the needs of postal operations. Besides, it is of much economy. So it can be a network of high quality. The construction of wireless network has brought considerable social and economic benefits to Dezhou postal enterprises.