The invention provides a link switching method and
system in a
wireless communication network. The method comprises the following steps: scanning base stations with
signal to
noise ratios greater than a first threshold within a preset range; establishing a link connection with the
base station having the largest
signal to
noise ratio according to a scanning result, obtaining standby base stations with
signal to
noise ratios greater than a second threshold according to the scanning result, establishing link connections with obtained one or more standby base stations separately, and using the links of the obtained standby base stations as standby links; and when the
communication quality on a main link becomes worse, selecting a standby link to perform link switch, and after the success of the link switch, obtaining the standby base stations again, and establishing the standby links. The
system comprises a scanning module, a main link module, a standby link module and a link switching module. By adoption of the link switching method and
system provided by the invention, the links in the
wireless communication network are switched quickly and reliably, ping-pong switch between
wireless links is reduced while the stable and quick switch of the wireless links is realized, and the
business data transmission ability of air interfaces is improved.