Patent ID: 7177298

Claim:
A communications system having multiple access channels, access mode control and a channel allocator for a communication network, said communications system further comprising, a dynamic allocation unit for controlling allocation of channels to communication units to enable communications units to share channels, said dynamic allocation unit having, means for specifying a reservation set for reserving channel assignments, means for specifying an allocation set for receiving said channel assignments, means for controlling the reservation set and the allocation set based upon system parameters, wherein said communications network operates with PDCH channels formed of radio blocks wherein, said reservation set is one or more radio downlink blocks of a PDCH channel, said allocation set is one or more radio blocks of an uplink PDCH channel, and wherein said PDCH channels have multiframes of sequential radio blocks denominated B 0 , B 1 , B 2 , B 3 , B 4 , B 5 , B 6 , B 7 , B 8 , B 9 , B 10 , B 11 wherein said reservation set is a downlink B 0 block and said allocation set includes uplink blocks B 1 , B 2 , B 3 , B 4 , B 5 , B 6 , B 7 , B 8 , B 9 , B 10 , B 11 of a current multiframe and uplink block B 0 of a next multiframe.