Patent ID: 6163532
Filing Date: 2000-12-19
Classification: H04L,H04W

Abstract:
A method of packet data transmission in a mobile radio data communication system comprising a personal station, a mobile data terminal equipment to be connected to said personal station, a wireless connection equipment for performing a wireless connection with said personal station, an exchange for connecting said personal station and a counterpart thereof through said wireless connection equipment, a LAN, a data terminal equipment on the LAN side connected to said LAN, and a control unit for performing a transmission control of packet data in said LAN and a transmission control of packet data between said exchange and said LAN,characterized in that said mobile data terminal equipment is assigned a packet address to be used in said LAN, and said control unit preliminarily has stored therein a packet address corresponding to said mobile data terminal equipment;when transmitting packet data to said mobile data terminal equipment, said LAN side data terminal equipment transmits packet data including a packet address of said mobile data terminal equipment to said LAN;if the packet address included in the packet data received through said LAN is the packet address of said mobile data terminal equipment, said control unit reserves the packet data and requests said exchange to connect to the mobile data terminal equipment corresponding to the packet address;when requested a connection to the mobile data terminal equipment corresponding to the packet address, said exchange establishes a communication path for said control unit and transmits a signal including the packet address to said personal station through said wireless connection equipment;if the packet address included in said signal is a packet address corresponding to said mobile data terminal equipment, said personal station transmits an acknowledgement signal;when receiving the acknowledgement signal through said wireless connection equipment, said exchange acknowledges the connection to said mobile data terminal equipment corresponding to the packet address to said control unit; andwhen receiving the acknowledgement from said exchange, said control unit transmits the reserved packet data to said mobile data terminal equipment.