| 摘要 |
A method and a system for TDD(Time Division Duplex) switching in a portable Internet system are provided to increase the accuracy of ranging between a RAS(Radio Access Subsystem) and a PSS(Personal Subscriber Station) as the RAS activates a reverse path and receives an initial ranging signal if a downlink with the PSS is completed. A system for TDD switching in a portable Internet system comprises a PSS(110), a RAS(122), an ACR(Access Control Router)(124), a contents server(140), and an IP network(130). If a downlink is received when a call connection is attempted, the PSS transmits an uplink including a control signal. The RAS transmits the downlink to the PSS according to a call connection request from the PSS, activates a reverse path immediately when the downlink is completed, and receives the uplink from the PSS. The ACR, a packet access router to connect a packet service network with the RAS, executes a handover function, a packet routing function, and an Internet access function. The contents server provides a data service to the PSS. The IP network receives packet data from the contents server and delivers the received data to the ACR. |
