System and method to provide fairness and service differentation in ad-hoc networks
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United States of America Patent
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Jul 11, 2006
Grant Date -
Jan 6, 2005
app pub date -
Jun 7, 2004
filing date -
Jun 6, 2003
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Abstract
A system and method for a media access control (MAC) scheduling algorithm having a distributed, self-coordinating approach to provide use fairness and service differentiation in an ad hoc network by using control RTS/CTS messages carrying node status information. A local scheduling algorithm uses the overheard RTS/CTS information with attributes specifying nodes' status to maximize the awareness of the neighborhood status for a multi-channel system where data and ACK messages are transmitted through different data channels. If the system uses a single channel, the corresponding information may be carried by using DATA or ACK messages. The algorithm measures the offered load, carried load, and backlogged load in the neighborhood to adjust the channel access timer to provide use fairness among different nodes, different links, and different streams. The algorithm can further both calculate the priority level based on the node queue status, and calculate the priority level based on the neighbor status, to break the contention tiers and enable the service differentiation.
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Patent Owner | Address | |
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RUCKUS IP HOLDINGS LLC | 3642 E US HIGHWAY 70 CLAREMONT NC 28610 |
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Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Barker, Jr Charles R | Orlando, FL | 14 | 507 |
Ozer, Sebnem Z | Altamonte Springs, FL | 12 | 554 |
Zeng, Surong | Altamonte Springs, FL | 34 | 1670 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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