Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Spatial reuse"”.
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Spatial reuse in TDMA wireless networks
In this thesis we investigate the performance of spatial reuse in wireless networks. More specifically, we investigate the performance of location-based spatial reuse built upon the identification of links in the network that form Collision-Free Sets (CFSs). We develop algorithms that efficiently …
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Enabling dense spatial reuse in millimeter-wave networks
… provides us with a new opportunity to exploit spatial reuse in order to scale network throughput. Exploiting such spatial reuse, however, requires aligning the beams of all nodes in a network. Aligning the beams is a difficult process which is complicated by indoor multipath, which can create …
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Congestion control in resilient packet ring networks
… same time for different flows; as a result, the spatial reuse feature is achieved. Enabling the spatial reuse feature introduces the challenge of guaranteeing fairness among the nodes sharing the same link. The RPR fairness algorithm is comparatively simple, but it poses some critical …
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Trading structure for randomness in wireless opportunistic routing
… of the 802.11 MAC. In particular, it prevents spatial reuse and thus may underutilize the wireless medium. This thesis presents MORE, a MAC-independent opportunistic routing protocol. MORE randomly mixes packets before forwarding them. This randomness ensures that routers that hear the same …
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Learning-Based Interference Mitigation for Wireless Networks
… avoidance, (2) channel rate adaptation, and (3) spatial reuse.
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A new localized approach to distributed fair scheduling in multihop wireless networks
… consideration of location-dependent contention, spatial reuse of channels, and desire to achieve fully distributed scheduling in the wireless communication systems. This thesis presents a localized and fully distributed algorithm with fair scheduling in multihop wireless networks. The proposed …
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Capactiy of single-hop communication links in wireless ad hoc networks
… parameter NP is defined in order to characterize spatial reuse in the network, and optimal network parameter is determined for maximizing link capacity in the process of dividing the network single frequency channel into equally sized subchannels.
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Utilizing Beamforming Antennas for Wireless Multihop Networks
… energy in desired directions can lead to higher spatial reuse of the channel. Also, the higher communication range of beamforming antennas can be exploited to achieve stronger network connectivity, and to obtain fewer hop routes. However, existing protocols considered suitable for omnidirectional …
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In defense of wireless carrier sense
… a balance between interference protection and spatial reuse. Criticized widely in the literature, carrier sense has been subject to many replacement attempts with sophisticated and complex alternatives, yet it remains extremely popular. Is the search for a superior alternative justified? In …
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Multi-Transceiver Free-Space-Optical Structures for Mobile Ad-Hoc Networks
… and receiver (transceiver) pairs that exploit spatial reuse of the shared medium and are capable of handling extremely high data rates using optical modulation techniques. However, because of the highly directional nature of FSO transceivers, nodes face a serious issue to communicate reliably: …
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Novel algorithms for fair bandwidth sharing on counter rotating rings
… new buffer insertion techniques, such as Spatial Reuse Protocol (SRP), were introduced in early 2000s. As a result, a new standard known as IEEE 802.17 Resilient Packet Ring was defined in 2004 by the IEEE Resilient Packet Ring (RPR) Working Group. Since then two addenda have been …
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Cross-layer optimizations in multi-hop ad hoc networks
… Clustering structures may facilitate the spatial reuse of resources by increasing the system capacity: at the same time, the clustering hierarchy may be used to coordinate transmissions events inside the network and to support intra-cluster routing schemes. Again, MAC and clustering …
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Predictable Real-Time Wireless Networking For Sensing And Control
… coordination, PRKS achieves a channel spatial reuse very close to what is enabled by the state-of-the-art centralized scheduler while ensuring the required link reliability. Ensuring the required link reliability in PRKS also reduces communication delay and improves network …