In a system in which multiple remote units compete for limited communication resources, a remote unit accesses the system by randomly selecting a first sequence from a set of predetermined sequences. The remote unit transmits a data bit stream modulated with the first sequence beginning at one of a set...http://www.google.de/patents/US6542493?utm_source=gb-gplus-sharePatent US6542493 - Method and apparatus for a CDMA random access communication system
