Access algorithms for packetized transmission in the presence of co-channel interference

Packetized access has some potential advantages over conventional circuit-switched based access methods because several signal sources can share the same radio channel using statistical multiplexing. We consider radio resource assignment algorithms for packetized access in the presence of co-channel interference. It is found that the advantage of packetized access is significantly limited by frequency reuse. We propose measurement-based adaptive MAC (medium access control) algorithms to improve packet-access efficiency. Computer simulations based on the example of packetized voice have confirmed that the proposed packet access protocols can support at least twice as many active users per radio port as that supported by circuit access under the same interference conditions