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In a wireless body area networks (WBAN) with integrated sensor hubs, the proposed MAC protocol is a TDMA-based schedule used in active superframe interleaving and beacon shifting defined by the IEEE 802.15.6 standard. It considers the human dynamics and traffic information to meet the different QoS requirements of each sensor, improve bandwidth utilization and reduces packet collisions within networks...
In safety-related industrial systems, stringent timelines and a high degree of reliability in communications are required. Networking protocols have to be certified using a mathematical framework that ascertains the end-to-end communication delay of flows is upper bounded. The recently created IETF 6TiSCH networking stack is a promising candidate to offer realtime communication services as communications...
To increase the number of successful accesses for machine-to-machine (M2M) communication, we propose a new random access (RA) procedure. The proposed RA procedure allows evolved NodeB (eNB) to know the preamble collisions in the first step by attaching user equipment (UE) identity information in physical random access channel (PRACH). This improvement prevents eNB from scheduling physical uplink shared...
Coordinated scheduling/beamforming (CS/CB) is regarded as a promising technique with non-ideal backhaul (NIB). However, due to the high latency of the NIB, the channel state information (CSI) and coordinated scheduling decisions will be severely delayed or even lost, resulting in serious system performance deterioration. To address this issue, an adaptive CS/CB scheme consisting of a semi-static coordinated...
In this paper, we study the delay performance of wireless network considering different resource allocation schemes with single-hop traffic. Existing works studying the delay performance only consider a given resource allocation scheme, either multi-channel system (sharing bandwidth) or time slotted system (sharing time). The fundamental question ignored is which type of resource allocation scheme...
With K-hop interference model, especially when K ≥ 2, the throughput-optimal centralized scheduler needs to solve a NP-Hard problem. It leads to the desire of a distributed, low-complexity but throughput-optimal scheduling algorithm. We generalize a randomized scheduling framework for a K-hop interference model and develop two randomized distributed scheduling algorithms which can be integrated into...
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