Patent ID: 8406282
Filing Date: 2013-03-26
Classification: H04L

Abstract:
1. A communications method, comprising: generating a strip Orthogonal Frequency Division Multiplexing (OFDM) symbol; generating non-strip OFDM symbols using a first tone hopping sequence, tone hopping in said non-strip OFDM symbols being independent of said generation of said strip OFDM symbol; generating a downlink transmission unit of a first type, said downlink transmission unit of a first type including a sequence of OFDM symbols including said strip OFDM symbol and a plurality of non-strip OFDM symbols, said step of generating a downlink transmission unit of the first type including: transmitting the downlink transmission unit; and generating additional strip OFDM symbols, generating said strip OFDM symbol and said additional strip OFDM symbols including performing tone hopping in accordance with a second tone hopping sequence, said first and second tone hopping sequences being different and being applied independently during generation of said non-strip OFDM symbols and strip OFDM symbols, respectively, said strip OFDM symbols including said strip OFDM symbol and said additional strip OFDM symbols.