Patent ID: 6181683
Filing Date: 2001-01-30
Classification: H04J,H04L,H04W

Abstract:
Method for the wireless transmission of data packets in a code division multiple access communication system wherein one of the code division multiple access channels (PRCH) is used in a time-shared fashion for the transmission of the data packets from several transmitting stations (MSy, MSz) to a receiving station (BS), comprising the following steps:sending a request from a transmitting station (MSy) to the corresponding receiving station (BS) of said communication system indicating the destination address to which said data packet(s) are to be routed,registering said transmitting station (MSy) and assigning an unique virtual connection identifier (VCIy) to it,attaching said transmitting station (MSy) to said code division multiple access channel (PRCH) used for the transmission of data packets,listening to the downlink of said code division multiple access channel (PRCH) used for the transmission of data packets until the corresponding receiving station (BS) broadcasts that it will be ""idle"" such that a random access to said code division multiple access channel (PRCH) used for the transmission of data packets is allowed in the next frame,ramping up the transmission power of said transmitting station (MSy) during said next frame until a certain power level is reached,transmitting said data packet(s) and said virtual connection identifier (VCIy) over the uplink of said code division multiple access channel (PRCH) used for the transmission of data packets to said receiving station (BS), androuting said data packet(s) to said destination address, the access to said code division multiple access channel (PRCH) used for the transmission of data packets being controlled by a multiple access protocol based on carrier sensing and collision detection (CSMA/CD).