Fast Dormancy | Application Software

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fast dormancy feature description for wcdma networks.
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  RadioJockey: Mining Program Execution to Optimize Cellular Radio Usage Pavan Kumar, Ranjita Bhagwan, Saikat Guha, Vishnu Navda, Ramachandran Ramjee, Dushyant Arora, Venkat Padmanabhan, George Varghese Microsoft Research India  Problem Context: Overheads in Cellular Radio Usage IDLE CELL_FACH CELL_DCH Wakeup   Timeout T1 Timeout T2 State transitions based on: (1) traffic volume (2) operator chosen timers Tx/Rx Tx/Rx 2   050100150200250300350 051015202530    A   v   g   C   u   r   r   e   n   t   i   n   m   A Time in Seconds   IDLE Tx/Rx   Ramp-up IDLE T1 Power Consumption Radio Tail (15-20J) T2 Signaling Transition # control messages IDLE   DCH 30 DCH   IDLE 2 Latency Transition Secs IDLE   DCH 2 DCH   IDLE 20  Existing Radio-tail Optimizations 1. Amortize tail overhead by shaping traffic a) TailEnder [IMC 09]  2. Adapt tail using Fast-dormancy a) Based on application hints  –  TOP [ICNP 10] b) Based on client-side idle timers  –  Falaki et al. [IMC 10] time prefetching batching  Existing Radio-tail Optimizations 1. Amortize tail overhead by shaping traffic a) TailEnder [IMC 09]  2. Adapt tail using Fast-dormancy a) Based on application hints  –  TOP [ICNP 10] b) Based on client-side idle timers  –  Falaki et al. [IMC 10] time prefetching batching   Requires app changes Requires app changes + developer awareness Commonly used in many smartphones (3-5 sec timers)
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