Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2008-07-15
2008-07-15
Perez-Gutierrez, Rafael (Department: 2617)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S517000, C455S069000, C455S068000, C455S127100, C455S226100, C370S332000, C370S333000, C370S328000, C370S329000, C370S338000
Reexamination Certificate
active
07400899
ABSTRACT:
Disclosed is a method for controlling a power level based on a packet error rate (PER) in a wireless personal area network (WPAN) system. The method for controlling a power level based on a packet error rate (PER) in a wireless personal area network (WPAN) system, includes the steps of: a) at a receiver, computing a PER of a packet in an initial check duration of PER (DP) wherein a transmission power level of the packet is set by a piconet coordinator (PNC); b) at the receiver, determining whether the computed PER satisfies a target PER, adjusting a target signal-to-interference ratio (SIR) and requesting a transmitter to adjust the initial transmission power level; and c) at the receiver, determining whether the number (N) of successive G is larger than a power control threshold, wherein G denotes DP satisfying the target PER, changing the target SIR based on the determination result whether the number (N) of successive G is larger than the power control threshold, and requesting the transmitter to adjust the possible transmission power level.
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Ashwin Sampath et al., “On Setting Reverse Link Target SIR in a CDMA System”, 0-7803-3659-3/97, copyright 1997 IEEE (pp. 929-933).
Sang-Sung Choi et al., “Power Control and Automatic Frequency Offset Control for UWB Communications”, IEEE 802.15-03/275r0, Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANS), Submission Slide 1-18.
Choi Sangsung
Kim Chang-Joo
Lee Hyung-Soo
Lee Il-Kyoo
Shin Cheol-Ho
Blakely , Sokoloff, Taylor & Zafman LLP
Electronics and Telecommunications Research Institute
Nguyen Khai
Perez-Gutierrez Rafael
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