Patent ID: 7626968
Filing Date: 2009-12-01
Classification: H04B,H04L,H04W

Abstract:
1. A wireless communication system comprising: a first wireless terminal which can perform transmission by a first transmission scheme and reception by a first reception scheme, a second wireless terminal which can perform transmission by the first transmission scheme and reception by the first reception scheme, and a third wireless terminal which has a second reception scheme, the first transmission scheme being capable of receiving and decoding by the first reception scheme, and the second transmission scheme being capable of receiving and decoding by both the first reception scheme and the second reception scheme, wherein while the third wireless terminal defers transmission under virtual carrier sense, the first wireless terminal transmits the first frame by the first transmission scheme, and the second wireless terminal adds information associated with a reception status to a second frame as a response frame to the first frame, and transmits the second frame by the first transmission scheme.