초록 ▼

A digital radio network having a first single random access for packet data is enhanced by providing a second access which includes a second random access channel for controlled short data messages and a polled data channel for larger data messages. All mobiles operating within the system can access

A digital radio network having a first single random access for packet data is enhanced by providing a second access which includes a second random access channel for controlled short data messages and a polled data channel for larger data messages. All mobiles operating within the system can access the first channel but only dual-mode mobiles can connect to the second access.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method for providing packet data access in a digital cellular communications network which includes:providing a broadcast control channel (BCCH) over which the network broadcasts system control information to mobile stations in the network;providing a first random acc

[ What is claimed is:] [1.]1. A method for providing packet data access in a digital cellular communications network which includes:providing a broadcast control channel (BCCH) over which the network broadcasts system control information to mobile stations in the network;providing a first random access scheme within said network in which packet data access for low traffic areas is provided over a data channel and mobile stations seeking packet data access compete with one another for use of the channel based upon channel availability messages broadcast to all mobile stations;providing a second access scheme comprising at least a polling data channel (PDCH), within said system in which packet data access for high traffic areas is provided for sending larger quantities of data between a mobile station and the network;broadcasting messages over said control channel (BCCH) which indicate the presence and operative parameters of the channels utilizing said second access scheme to all mobile stations; andallowing access to the channels utilizing said second access scheme to only mobile stations which are capable of communicating over both the channels utilizing said first and second access schemes, said mobile stations that are capable of communicating over both channels send a registration signal on a random access channel (ACH) so that said network can allocate at least one polling data channel (PDCH).