Route maintenance and update based on connection identifier in multi-hop relay systems
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United States of America Patent
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Jan 31, 2012
Grant Date -
Jun 5, 2008
app pub date -
Aug 8, 2007
filing date -
Aug 9, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Connection ID (CID) assignment in multi-hop relay system can be used to perform routing. Using CID assignment as routing information in a multi-hop wireless relay system to maintain the routing structure is disclosed. In a CID cache scheme, a base station builds a CID cache based on the upstream packet and broadcasts the CID cache to a relay station. The CID cache comprises CIDs along with routing information. Based on CID cache the spanning tree of the routing can be reconstructed. A hierarchical CID assignment is disclosed wherein a base station assigns a range of CIDs to a relay station. A relay station can recognize its data packets and forward them to corresponding mobile stations. Maintaining routing automatically along with CID assignment is also disclosed.
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