Abstract: The present invention provides a system and method for instantly providing a packet-switched connection, e.g., GPRS, to a portable computer of an existing mobile station. According to exemplary embodiments of the present invention, a GPRS identifier is added to a modem's standard AT dial command in order to indicate that GPRS is requested. The modification to the modem's dial command is made in such a way so as to be compliant with the well known syntax rules set forth for that command. By modifying the modem's AT command set accordingly, an existing mobile station's portable computer will be capable of instantly supporting GPRS irrespective of the off-the-shelf operating system in use in the portable computer.

Abstract: An adaptive reception and transmission technique according to one embodiment of the invention offers the advantages of adaptive reception transmission using feedback without the associated mobile radio complexity increase and information capacity penalty. The technique has been developed to exploit structured variation which occurs in the multipath fading present in the wireless antenna array channel. Thus, multipath propagation effects are explicitly accounted for in the problem approach. The technique is blind in that the antenna beam is formed in the absence of explicit knowledge of the array geometry, and without the necessity of array calibration or mobile feedback. The basic approach is to estimate the optimum receive and transmit antenna beam pattern based on certain statistical properties of the received antenna array signals. The optimum receive and transmit beam pattern is found by solving an optimization equation.

Abstract: An intelligent mobile radio unit is served by one of a network of macrocells and microcells.

Abstract: A radio communication system (100) has radio receivers (106) assigned to a predetermined one of a plurality of time periods (FRAME 0-127). The radio communication system (100) comprises a transmitter (104) that transmits information during the predetermined time period (FRAME 0-127) assigned to at least one radio receiver (106). A receiver (202, 206) receives information directed to said at least one radio receivers (106), the radio receivers (106) being individually assigned to receive information during at least one of a plurality of predetermined time periods (FRAME 0-127). A monitoring device (1702) monitors a level of traffic associated with each of the predetermined time periods (FRAME 0-127) and a measuring device (1704) measures a level of traffic associated with the at least one radio receiver (106) over the assigned predetermined time period (FRAME 0-127).