Error detection/correction and fault detection/recovery – Pulse or data error handling – Error count or rate
Reexamination Certificate
2007-07-24
2007-07-24
Britt, Cynthia (Department: 2138)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Error count or rate
C714S798000, C455S522000
Reexamination Certificate
active
10914447
ABSTRACT:
Disclosed is a method for reducing power consumption of a user terminal when synchronization between a user terminal and a base station is disrupted in a broadband wireless access communication system. The method comprises the steps of: calculating first error rate (E) based on first channel state information included in a signal transmitted from the base station; comparing the first error rate (E) with a first threshold value; determining that the synchronization is disrupted and maintaining a transmission-off mode for a predetermined period of time if the first error rate (E) is greater than the first threshold value; maintaining a reception-on mode during a period of time set for a reception mode after the transmission-off mode is performed; receiving from the base station second channel state information during the reception-on mode; calculating a second error rate (E1) based on the second channel state information; comparing the second error rate (E1) with a second threshold value; and determining that the synchronization has been reestablished and maintaining the transmission mode in a transmission-on mode if the second error rate (E1) is less than the second threshold value.
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“Downlink power control of dedicated channels in UTRA TDD” by Kurjenniemi et al. The 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Publication Date: Sep. 15-18, 2002 vol. 3, On pp. 1402-1406 vol. 3 ISBN: 0-7803-7589-0 INSPEC Accession No. 7678111.
Britt Cynthia
The Farrell Law Firm
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