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The energy limited connectionless networking architecture. The considered Cross-Layer structure. Cross-Layer informations. Cross-Layer informations. Transmitter. Destination Client. Faded Wireless Channel. Throughput analysis. Nakagami-m fast- fading and lognormal slow-fading.
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The considered Cross-Layer structure Cross-Layer informations Cross-Layer informations Transmitter Destination Client Faded Wireless Channel
Throughput analysis • Nakagami-mfast- fading and lognormal slow-fading • The sending rate implemented at the Transport layers • Constants depends on mechanisms implemented at the Transport, DL and PHY layers • b=1 or 2 is the number of segment that are simultaneously acknowledged • MSS (byte) is the maximum segment size • A,B,C are real and nonnegative constants depending on the implemented FECs • Connection-state Averaged segment round-trip-time D.Shuman, M. Liu, “Energy-Efficient Transmission Scheduling for Wireless Media Streaming with Strict Underflow Constraints” WiOPT 2008, pp.354-359, April 2008
Streaming end-to-end model Transmitter • Server-Client system model • Time is slotted • Transmitter: • IUs to be sent by the media encoder • Playin buffer of limited capacity • Destination Client: • Playout buffer of limited capacity VBR media Encoder VBR media Decoder Destination Client
Streaming end-to-end model Transmitter • Server-Client system model • Time is slotted • Transmitter: • IUs to be sent by the media encoder • Playin buffer of limited capacity • Destination Client: • Playout buffer of limited capacity VBR media Encoder VBR media Decoder Destination Client • Maximization of the average sending rate • Minimization of the playout jitter
Maximization of the Average throughput under hard QoS constraints
Maximization of the Average throughput under hard QoS constraints
Maximization of the Average throughput under hard QoS constraints
Maximization of the Average throughput under hard QoS constraints
Maximization of the Average throughput under hard QoS constraints
Maximization of the Average throughput under hard QoS constraints