DocumentCode :
634628
Title :
Poster abstract: PRK-based scheduling for predictable link reliability in wireless networked sensing and control
Author :
Honawei Zhang ; Xiaohui Liu ; Chuan Li ; Yu Chen ; Xin Che ; Feng Lin ; Le Yi Wang ; Yin, George
Author_Institution :
CS Dept., Wayne State Univ., Detroit, MI, USA
fYear :
2013
fDate :
8-11 April 2013
Firstpage :
255
Lastpage :
255
Abstract :
Summary form only given. Despite decades of research on interference-oriented channel access scheduling, most existing literature are either based on the physical interference model or the protocol interference model, neither of which is a good foundation for distributed interference control in the presence of uncertainties [2]. To address the issue, Che et al. [2] have identified the physical-ratio-K (PRK) interference model that integrates the protocol model´s locality with the physical model´s high-fidelity. To enable distributed scheduling with predictable performance, we design the PRK-based scheduling protocol PRKS. In PRKS, we model the problem of identifying the PRK model parameter KS,R,T(S,R) as a minimum-variance regulation control problem, and we design distributed controllers that allow each link to adapt its PRK model parameter for ensuring the desired link reliability through purely local coordination. For ensuring that nodes interfering with one another do not transmit concurrently, we propose the concept of local signal map that allows nodes close-by to maintain the wireless path loss among themselves; together with the PRK model and transmission power control in protocol signaling, local signal maps enable nodes to precisely identify the interference relations among themselves despite anisotropic, asymmetric wireless communication and large interference range. To address the inherent delay in protocol signaling and to avoid interference between protocol signaling and data transmissions, PRKS uses a control channel for protocol signaling and a separate data channel for data transmissions in a TDMA fashion. With the above mechanisms, PRKS precisely identifies and then avoids interfering concurrent transmissions in scheduling; accordingly, PRKS eliminates the hidden terminal issue which has been a basic challenge in interference-oriented channel access control since 1975.
Keywords :
protocols; radio links; radiofrequency interference; scheduling; telecommunication control; telecommunication network reliability; wireless channels; wireless sensor networks; PRK based scheduling; PRK interference model; PRK-based scheduling protocol; concurrent transmitter; distributed interference control; interference oriented channel access scheduling; physical interference model; physical-ratio-K; predictable link reliability; protocol interference model; protocol model; wireless networked control; wireless networked sensing; Adaptation models; Interference; Protocols; Reliability engineering; Transmitters; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Cyber-Physical Systems (ICCPS), 2013 ACM/IEEE International Conference on
Conference_Location :
Philadelphia, PA
Type :
conf
Filename :
6604033
Link To Document :
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