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This paper considers joint congestion control and multiuser scheduling in a hybrid wireline and wireless network, where the air interface of wireless links is based on Orthogonal Frequency Division Multiplexing (OFDM). For static channels, the paper formulates this cross-layer design as a Network Utility Maximization (NUM) problem with both wireline and wireless link constraints. The convexity of the problem enables a well-established dual-based approach to decompose it into two subproblems, the transport layer source rate adaptation and the Medium Access Control (MAC) layer multiuser OFDM scheduling, which are connected and coordinated by link prices.

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Format:PDFSize:450 KB
Date:Dec 2006
Pages:9

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