Legacy Wireless Communication Device Coexisting Amble Sequence
AssigneeFujitsu Limited
InventorsChenxi Zhu, Wei-Peng Chen, Jonathan Agre
Life of this patent
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Abstract
The embodiments generate a new type of amble sequence for a wireless communication network with mixed nodes, by generating a first amble sequence invisible to a first node based upon an existing amble sequence for the first node and generating a second amble sequence having a low to zero cross-correlation with the first amble sequence, based upon the first amble sequence. The first and second amble sequences can be broadcast in alternating communication link frames.
Claims21
A method of generating an amble sequence in a wireless communication network having a first amble sequence, comprising:
- generating a second amble sequence in a frequency domain having a low cross-correlation with the first amble sequence;
- generating a third amble sequence based upon the second amble sequence which has a substantially low to zero cross-correlation with the second amble sequence;
- transmitting the second and third amble sequences in alternating frames of the wireless communication network.
A method of generating a new type of amble sequence for a wireless communication network with mixed nodes, comprising:
- generating, based upon an existing amble sequence for a first node, a first amble sequence invisible to the first node;
- generating a second amble sequence having a low to zero cross-correlation with the first amble sequence, based upon the first amble sequence;
- and
- broadcasting the first and second amble sequence in alternating communication link frames or other duration necessary for network synchronization.
An apparatus, comprising:
- a computer readable recording medium storing a wireless communication first amble sequence;
- and
- a controller
- generating a second wireless communication amble sequence in a frequency domain having a low correlation with the first wireless communication amble sequence,
- generating a third wireless communication amble sequence based upon the second amble sequence and having a low correlation with the second wireless communication amble sequence, and
- transmitting the second and third wireless amble sequences in alternate frames.
An apparatus wirelessly communicating with other nodes, comprising:
- a controller
- searching for a first wireless communication amble sequence visible to the apparatus and to the other wireless communication nodes;
- and
- searching for a pair of second wireless communication amble sequences invisible to the other wireless communication nodes by searching for a correlation peak of wireless frame signals collected at two frames apart.
Dependencies are inferred from the claim text.