Method for synchronizing a session timer

Details Method for synchronizing a session timer Method for synchronizing a session timer

1996-09-30

2000-12-12

Pham, Chi H.

Multiplex communications

Communication over free space

Combining or distributing information via time channels

455517, H04J 306, H04B 700

Patent

active

06160805&

ABSTRACT:
In a wireless communication system, session timers are separately maintained by a communication device (101) and a system controller (104). When a portion of outbound data is sent to a base station (102) for transmission to the communication device, the base station creates at least one transmission time stamp which is then sent to the system controller (203). If a session has not been previously established, the system controller uses the at least one transmission time stamp to establish a session and initiate a session timer (204). If a session has been previously established, the system controller uses the at least one transmission time stamp to determine whether to continue the current session timer (709). This applies to inbound data as well. Furthermore, session timers can also be synchronized to paging acknowledgments (305), channel information messages (503) or channel access messages (602). In this manner, session timers are more accurately synchronized.

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patent: 5748620 (1998-05-01), Capurka
patent: 5802465 (1998-09-01), Hamalainen et al.
patent: 5835860 (1998-11-01), Diachina

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