Patent ID: 7233581

Claim:
A digital radio communication system for multi-applications comprising: a base station; and a plurality of mobile stations, wherein the mobile stations send the base station signal data of a radio channel assignment request including a code representing an application to be offered over a radio communication channel; wherein the base station comprises: means for distinguishing priority of the application based on the code representing the application included in said signal data of the radio channel assignment request sent from the mobile stations, and means for assigning one radio communication channel or a plurality of radio communication channels to the mobile stations, based on said priority, according to said signal data of the radio channel assignment request sent from the mobile stations, wherein at least either said base station or each mobile station comprises a function of measuring radio communication quality of the radio communication channel therebetween; wherein the base station further comprises: means for implementing, if a predetermined radio communication quality is not attained in a radio communication channel being used for a higher priority application, reassignment of a new radio communication channel to the mobile station using that channel so that same contents will be transmitted over a plurality of radio communication channels including a pre-assigned radio communication channel and the new radio communication channel in a regular period, wherein the system further comprises means for implementing in a specific application service area, including two or more contiguous cells, different settings of radio channel assignment priority of the application in the cells, according to a cell position along a direction in which mobile stations normally move.