Remote wireless unit having reduced power operating mode

Details Remote wireless unit having reduced power operating mode Remote wireless unit having reduced power operating mode

1997-02-19

1999-11-16

Vo, Nguyen

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455343, H04B 138, H04M 100

Patent

active

059873388

ABSTRACT:
A remote unit for a personal wireless area network includes a receiver, an AC power supply, a battery-backup power supply and a controller. The battery-backup becomes operative when the AC power supply fails and supplied power to the receiver. The controller detects when the AC power supply fails and controls the receiver and the battery-backup power supply by invoking a sleep mode of operation. The sleep mode of operation is periodically interrupted by the controller controlling the receiver and the battery-backup power supply to enter a standby mode of operation in which the receiver scans for a CONNECT message from a base station indicating an incoming call. The controller coordinates the sleep mode and the standby mode of operations based on a frame count that is generated from an identification number of the remote unit. A highly bandwidth-efficient communications method is employed in the base station to enable it to coordinate communication with the remote unit when it changes from the sleep mode to the standby mode.

REFERENCES:
patent: 5361397 (1994-11-01), Wright
patent: 5509015 (1996-04-01), Tiedemann, Jr. et al.
patent: 5745860 (1998-04-01), Kallin
patent: 5752202 (1998-05-01), Obright
Vandendorpe, L. et al. "Analysis of Residual Interference after MSE Linear Equalization of Multitone Spread Spectrum Signals," Proceedings of the Conference on Communications, Seattle, Jun.18 -22, 1995; Institute of Electrical and Electronics Engineers, vol. 3, Jun. 8, 1995; XP000535041; pp. 1673-1677.
Vandendorpe, L. et al. "Performance Analysis of Linear Joint Multiple Access Interference Cancellation-Equalization for Asynchronous Multitone CDMA, " IEEE, Sep. 25, 1996; XP000610292; pp. 537-541.

Affiliated with

Also associated with

Rating

Remote wireless unit having reduced power operating mode does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Remote wireless unit having reduced power operating mode, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Remote wireless unit having reduced power operating mode will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1336447