Patent ID: 7298721
Filing Date: 2007-11-20
Classification: H04B,H04J,H04L,H04W

Abstract:
1. A single carrier/DS-CDMA packet transmission method that expands a bandwidth of information symbols by a sequence of spreading codes, and transmits packets by use of spreading signals having an expanded bandwidth, comprising: assigning a predetermined fixed time slot in a data frame for dedicated use for transmission of a reservation demand packet, the reservation demand packet being a request for an allocation of a spreading code and/or a time slot; assigning, in said data frame, slots other than the predetermined fixed time slot for a transmission of data packets; code-multiplexing said data frame with one of the spreading codes so as to code-multiplex information in the predetermined fixed time slot and information in the slots other than the predetermined fixed time slot; and transmitting the code-multiplexed data frame containing the reservation demand packet and data packets.