A Case for Time Slotted Channel Hopping for ICN in the IoT

Enabling Listening Suspension in the Time Slotted Channel Hopping Protocol

Time slotted channel hopping provides reliable and deterministic communication in IEEE 802.15.4 mesh networks. Although slotted access is able to lower energy consumption drastically by reducing the duty cycle of the radio module, it usually leads to significant idle listening experienced by receivers, which makes it a sub-optimal solution when ultra low-power wireless is sought for. In this paper a listening suspension mechanism is described, which operates at the MAC layer and is part of a more general approach aimed at cutting down energy consumption by proactively reducing idle listening. …

Contention Based Proportional Fairness (CBPF) Transmission Scheme for Time Slotted Channel Hopping Networks

Time Slotted Channel Hopping (TSCH) is a Medium Access Control (MAC) protocol introduced in IEEE802.15.4e standard, addressing low power requirements of the Internet of Things (IoT) and Low Power Lossy Networks (LLNs). The 6TiSCH Operation sublayer (6top) of IEEE802.15.4e defines the schedule that includes sleep, transmit and receive routines of the nodes. However, the design of schedule is not specified by the standard. In this paper, we propose a contention based proportional fairness (CBPF) transmission scheme for TSCH networks to maximize the system throughput addressing fair allocation of…

Performance Evaluation of Orchestra Scheduling in Time Slotted Channel Hopping Networks

In this paper, we evaluate the performance of networks that use RPL (Routing Protocols for Low Power and Lossy Networks) with TSCH (Time Slotted Channel Hopping) and Orchestra (an autonomous method for building the TSCH schedule). We measure the performance in the transient state when a node dies (i.e., removed from the network) and determine how long it takes for the network to come back to a stable RPL tree and also what the impact is with respect to energy consumption. Our analysis shows that the Orchestra reduces the energy consumption when the RPL is in a transient state, like in the case…

基于IEEE 802.15.4 TSCH网络的自适应信道跳频：一种动态伯努利赌博机方法

Adaptive Channel Hopping for IEEE 802.15.4 TSCH-Based Networks: A Dynamic Bernoulli Bandit Approach

针对IEEE 802.15.4 TSCH网络在非平稳干扰下的信道跳频问题，提出基于动态多臂伯努利赌博机的在线学习算法，提升能效、PDR和延迟性能。

CONSIP: Consistency Protocol for Hopping Function Exchange and Black listing in TSCH

The use of white and black listing techniques in Wireless Sensor Networks (WSN), and in particular those which are based on the Time Slotted Channel Hopping (TSCH) operating mode of IEEE 802.15.4, permits to improve reliability and latency by performing transmissions on the best channels. Techniques that operate on a per-link basis are deemed quite effective, but proper operation requires that the two end points involved in the communication agree on the channels to be used for transmission. On the contrary, communication in the network can be prevented, eventually leading, in the worst cases,…

GT-TSCH：面向低功耗物联网网络的博弈论分布式TSCH调度器

GT-TSCH: Game-Theoretic Distributed TSCH Scheduler for Low-Power IoT Networks

针对低功耗物联网中TSCH调度更新问题，提出基于非合作博弈论的分布式调度器GT-TSCH，通过监控队列长度、DAG位置、链路质量和生成率更新调度，证明纳什均衡存在性，实验显示吞吐量和延迟优于现有方法。