Abstract: A system for providing general packet radio services (GPRS) to a mobile station includes a packet network operable to transport packets of information, a database coupled to the packet network and operable to store profile information associated with the mobile station, and a base station operable to communicate with the mobile station over a wireless interface. The system also includes an access point coupled to the base station and to the packet network. The access point is operable to communicate with the mobile station through the base station. The system further includes a GPRS support node coupled to the packet network and operable to communicate with the access point. The GPRS support node is also operable to monitor a location of the mobile station and to route packets of information for the mobile station to the access point. In addition, the system includes an interworking point coupled to the packet network.

Abstract: The signal received in a CDMA system is sampled at a rate greater than the chip rate of the spreading sequences. In order to assign the propagation delays to the arms of a rake receiver, consecutive delays are tested within a time window by evaluating, for each delay tested, an energy of the correlation between the signal received and a reference spreading sequence to which said tested delay is applied. A selection threshold is determined from the largest of the energies evaluated. A first list is compiled containing delays from the window for which the histogram of the evaluated energies exhibits a local maximum greater than the selection threshold, and a second list is compiled containing delays neighboring the delays of the first list. The delays assigned to the arms of the rake receiver are selected initially from the first list and then, if this is insufficient, from the second list.