专利名称：Methods to resolve TSF timer ambiguity of
resolve a doi name
IEEE 802.11e schedule element
发明人：Javier Del Prado Pavon,Amjad Soomro,Sai
Shankar Nandagopalan,Stefan
Mangold,Zhun Zhong
申请号：US10572925
申请日：20040920
公开号：US07382694B2
公开日：
20080603
专利内容由知识产权出版社提供
专利附图：
摘要：A plurality of methods, computer program product, and apparatus that use a
lower 32 bit field of a 64-bit 802.11 TSF timer, so as to encode the reference time instant without the ambiguity as to whether there the reference time is referring to a future time or a past time. According to an aspect of the present invention, the fact that the low order 32 bits of the TSF timer wraps over in about 71 minutes is exploited to remove any ambiguity in the reference times contained in the Schedule Element frame. One method employs an algorithm base on distance between two reference points to determine whether the timer has wrapped around a time period, and another method uses a delay interval or a timeout to determine whether or not the TSF timer is wrapped or unwrapped. Another method includes determining whether an absolute value of X−O is less than, or greater than or equal to maximum value M/2.
申请人：Javier Del Prado Pavon,Amjad Soomro,Sai Shankar Nandagopalan,Stefan Mangold,Zhun Zhong
地址：111 S. Highland Ave., Apt. 7 Ossining NY 10562 US,54 Flower Rd. Hopewell Junction NY 12533 US,177 White Plains Rd., Apt. No. 74G Tarrytown NY 10591 US,306 Eagle Bay Dr. Ossining NY 1056
2 US,24 Scenic Cir. Croton-On-Hudson NY 10520 US 国籍：US,US,US,US,US
代理人：Peter Zawilski
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