The invention relates to methods for transmission of signalling data in cellular telecommunication networks. According to the invention, multiple radio bearers can be allocated for transferring signalling traffic, but all higher layer signalling is in any case taken through the RRC protocol. In the inventive...http://www.google.com.tw/patents/US6751227?utm_source=gb-gplus-share專利 US6751227 - Signalling method
