| US 7,567,543 B2 | ||
| Method and apparatus for cross layer resource allocation for wireless backhaul networks | ||
| Min Cao, Urbana, Ill. (US); Xiaodong Wang, New York, N.Y. (US); Seung-Jun Kim, Plainsboro, N.J. (US); and Mohammad Madihian, Plainsboro, N.J. (US) | ||
| Assigned to NEC Laboratories America, Inc., Princeton, N.J. (US) | ||
| Filed on May 24, 2006, as Appl. No. 11/420,137. | ||
| Claims priority of provisional application 60/729775, filed on Oct. 24, 2005. | ||
| Prior Publication US 2007/0111757 A1, May 17, 2007 | ||
| Int. Cl. H04W 4/00 (2009.01); H04M 1/00 (2006.01) | ||
| U.S. Cl. 370—338 [370/328; 455/561] | 34 Claims |
| 1. A method for use in a distributed wireless communication network, comprising:
receiving an indication of a set of nodes in said network to transmit over a corresponding set of links in said network;
determining for each node in said set of nodes an optimal rate of transmission;
determining for each link in said set of links an optimal rate of traffic flow;
calculating a target signal to noise ratio over each of said links;
calculating beamformer weights and transmit powers for each node as a function of said target signal to noise ratio, and
wherein said optimal rate of transmission from each node is based on the equation:
 where sn*(k) is the optimal value for the rate of transmission from node n at iteration k;
T is the period of the transmission schedule; O(n) is the set of links emanating from node n; I(n) is the set of links entering
node n; and vn(k) and λl(k) are Lagrangian dual variables at iteration k.
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