Patent ID: 6097717
Filing Date: 2000-08-01
Classification: H04W

Abstract:
In a radio communication system which is arranged for packet data transmission via at least one time-divided channel between a base station and mobile stations, according to a message-synchronized ALOHA protocol with reservation, the mobile stations being arranged to send access requests to the base station, which is arranged to receive and comply with access requests from at least a first mobile station by sending thereto a channel reservation message comprising a channel reservation, whereby time slots are reserved for packet data transmission between the first mobile station and the base station, and to receive access requests from a first group of mobile stations for which channel reservation momentarily cannot be carried out, a method comprising the steps of:confirming the reception of access requests from the first group of mobile stations in the form of an access confirmation from the base station to each of the mobile stations included in the first group;including the access confirmations in the channel reservation message with the channel reservation to the first mobile station;arranging the first group in the radio communication system associated with the access confirmations in a queue, a queue position being allocated to each of the mobile stations in this group; andcarrying out channel reservation for the mobile stations according to their queue positions.