METHODS AND APPARATUS FOR RANDOM CHIP DELAY ACCESS PRIORITY IN A COMMUNICATIONS SYSTEM

摘要

The present invention provides methods and apparatus for providing accesspriority in a MAC protocol of a communications system such as, for example,withrespect to UMTS RACH. Particularly, the invention introduces several accessprioritymethodologies including: (i) random chip delay access priority (RCDAP); (ii)randombackoff based access priority (RBBAP); (iii) variable logical channel basedaccesspriority (VLCAP); (iv) UMTS-specific variable logical channel based accesspriority(VLCAP'); (v) probability based access priority (PBAP); and (vi)retransmission basedaccess priority (REBAP). Each methodology associates some parameter orparameter'sto access priority classes in order to influence the likelihood of a remoteterminalcompleting a successful access request to a base station.