Method and apparatus for interleaving sequence elements of an ofdma syncrhonization channel

An orthogonal frequency domain multiple access (OFDMA) base station comprising:

• a synchronization channel generator configured to generate a synchronization channel signal by the synchronization channel generator, the synchronization channel signal comprising a plurality of synchronization channel signal sequence elements including a first set of synchronization channel signal sequence elements and a second set of synchronization channel signal sequence elements, wherein the first set of synchronization channel signal sequence elements is based on a general chirp like (GCL) sequence with a sequence index defined in response to first partial cell identification information associated with the base station, and wherein the second set of synchronization channel signal sequence elements is based on a second sequence other than a GCL sequence, which has properties that enable sequence index detection;
• and
• transmitter circuitry configured to transmit an OFDMA signal, the OFDMA signal comprising the synchronization channel signal.

A method for use in an orthogonal frequency domain multiple access (OFDMA) base station in a wireless communication system including a synchronization channel generator and transmitter circuitry, the method comprising the steps of:

• generating a synchronization channel signal by the synchronization channel generator, the synchronization channel signal comprising a plurality of synchronization channel signal sequence elements including a first set of synchronization channel signal sequence elements and a second set of synchronization channel signal sequence elements, wherein the first set of synchronization channel signal sequence elements is based on a general chirp like (GCL) sequence with a sequence index defined in response to first partial cell identification information associated with the base station, and wherein the second set of synchronization channel signal sequence elements is based on a cyclically shifted maximal length binary sequence with a cyclic shift of the maximal length binary sequence defined in response to second partial cell identification information associated with the base station;
• and
• transmitting an OFDMA signal by the transmitter circuitry, the OFDMA signal including the synchronization channel signal.

An orthogonal frequency domain multiple access (OFDMA) base station comprising:

• a synchronization channel generator generating a synchronization channel signal comprising a plurality of synchronization channel signal sequence elements including a first set of synchronization channel signal sequence elements and a second set of synchronization channel signal sequence elements, wherein the first set of synchronization channel signal sequence elements is based on a general chirp like (GCL) sequence with a sequence index defined in response to first partial cell identification information associated with the base station, and wherein the second set of synchronization channel signal sequence elements is based on a cyclically shifted maximal length binary sequence with a cyclic shift of the maximal length binary sequence defined in response to second partial cell identification information associated with the base station;
• and
• transmitter circuitry transmitting an OFDMA signal, the OFDMA signal comprising the synchronization channel signal.

A method for use in an orthogonal frequency domain multiple access (OFDMA) base station in a wireless communication system including a synchronization channel generator and transmitter circuitry, the method comprising the steps of:

• generating a synchronization channel signal by the synchronization channel generator, the synchronization channel signal comprising a plurality of synchronization channel signal sequence elements including a first set of synchronization channel signal sequence elements, wherein the first set of synchronization channel signal sequence elements is based on a cyclically shifted maximal length binary sequence with a cyclic shift of the maximal length binary sequence defined in response to cell identification information associated with the base station;
• and
• transmitting an OFDMA signal by the transmitter circuitry, the OFDMA signal including the synchronization channel signal.

An orthogonal frequency domain multiple access (OFDMA) base station comprising:

• a synchronization channel generator configured to generate a synchronization channel signal by the synchronization channel generator, the synchronization channel signal comprising a plurality of synchronization channel signal sequence elements including a first set of synchronization channel signal sequence elements, wherein the first set of synchronization channel signal sequence elements is based on a cyclically shifted maximal length binary sequence with a cyclic shift of the maximal length binary sequence defined in response to cell identification information associated with the base station;
• and
• transmitter circuitry transmitting an OFDMA signal, the OFDMA signal comprising the synchronization channel signal.