Patent ID: 7899393
Filing Date: 2011-03-01
Classification: H04W

Abstract:
1. A communication device adapted to communicate with at least one second communication device in a half-duplex near-field communication scheme, further adapted to: receive a first request message from the second communication device which is supposed to be answered within a first response waiting time span, and which contains an amount of request data, ascertain a value of a requested second response waiting time span for providing a first response message in reply to the first request message in such a way that said value of the requested second response waiting time span generally increases with the amount of request data, and send within the first response waiting time span a second request message to the second communication device, the second request message representing a request for a second response waiting time span; and ascertain the second response waiting time span according to the formula wherein m is the number of request data bytes contained in the first request message, M is a predetermined maximum number of request data bytes, and bRWT is a basic response waiting time span according to the formula in which fc is a frequency of the operating field used for near field communication by the communication device and WT is a value of a predetermined waiting time span.