Patent ID: 6385456
Filing Date: 2002-05-07
Classification: H04B,H04W

Abstract:
A method of transmitting data in a cellular radio system between a base station in a cell, which is one of a plurality of base stations in a corresponding plurality of cells, and a mobile station wherein the transmission occurs in a plurality of time slots of a time division multiplex frame pursuant to a time division multiplex method, the method comprising the steps of:determining a first data rate time period; transmitting data at a first data rate over a first number of allocated time slots for the duration of the first data rate time period; radio-monitoring base stations in adjacent cells during the transmission of data at the first data rate over a first number of non-allocated time slots for the duration of the first data rate time period; determining a second data rate time period; transmitting data at a second data rate over a second number of allocated time slots upon expiration of the first data rate time period and for the duration of the second data rate time period, the second number of allocated time slots being less than the first number of allocated time slots; radio-monitoring the base stations in adjacent cells during the transmission of data at the second rate over a second number of non-allocated time slots for the duration of the second data rate time period, the second number of non-allocated time slots being greater than the first number of non-allocated time slots; and transmitting data at the first data rate upon expiration of the second data rate time period.