METHODS AND APPARATUS FOR RETRANSMISSION BASED ACCESS PRIORITY IN A COMMUNICATIONS SYSTEM

摘要

PURPOSE: A methods and apparatus for retransmission based access priority in a communications system is for providing access priority in a MAC protocol of a communications system such as, for example, with respect to UMTS RACH. CONSTITUTION: A methods and apparatus introduces several access priority methodologies including: (i)random chip delay access priority (RCDAP); (ii) random back off based access priority (RBBAP); (iii) variable logical channel based access priority (VLCAP); (iv) UMTS-specific variable logical channel based access priority (VLCAP'); (v) probability based access priority (PBAP); and (vi) retransmission based access priority (REBAP). Each methodology associates some parameter or parameters to access priority classes in order to influence the likelihood of a remote terminal completing a successful access request to a base station.