Abstract:
PROBLEM TO BE SOLVED: To provide a method for controlling a traffic stream between mesh points in a mesh network. SOLUTION: Data arriving from the mesh point are aggregated in packet queues (814). The packet queues segregate arriving data by the Quality of Service (QoS) requirement of the data. An appropriate communication channel is selected. The communication channel is accessed through a contention access schema (808). An M-Request-To-Send (MRTS) message is sent to a potential receiving mesh point, and a receiving mesh point responds with an M-Clear-to-Send (MCTS) message (812). Data from the packet queues are transmitted to the next mesh point (814). A mesh point power save mode makes a battery-operated mesh point sleep, thus preserving power. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To control a traffic stream in a mesh network.SOLUTION: A method of controlling a traffic stream in a mesh network comprises: receiving at a second node a traffic stream admission request to admit a traffic stream from a first node; determining a traffic load for the second node; and determining whether to admit or deny the traffic stream from the first node using the traffic load.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for selecting a channel at a mesh point in a mesh network. SOLUTION: Data arriving from the mesh point are aggregated in packet queues (806). The packet queues segregate arriving data by the Quality of Service (QoS) requirement of the data. A channel is selected from among a plurality of channels on the basis of the signal strength of a reception signal. An M-Request-To-Send (MRTS) message is sent to a potential receiving mesh points and a receiving mesh point responds to an M-Clear-to-Send (MCTS) message (812). Data from the packet queues are transmitted to the next mesh point (814). A mesh point power save mode makes a battery-operated mesh point sleep, thus preserving power. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
Techniques for controlling transmissions in wireless communication networks are described. In one aspect, transmission control for a mesh network may be achieved by ranking mesh points or stations in the mesh network. In one design, the rank of a first station in the mesh network may be determined. At least one station of lower rank than the first station in the mesh network may be identified. At least one transmission parameter for the at least one station of lower rank may be set by the first station. In another aspect, stations may be assigned different transmission parameter values to achieve the data requirements of each station. At least one transmission parameter value may be selected for each station based on the rank, QoS requirements, amount of traffic, and/or achievable data rate for that station and may be sent (e.g., via a probe response message) to the station.
Abstract:
Techniques for controlling transmissions in wireless communication networks are described. In one aspect, transmission control for a mesh network may be achieved by ranking mesh points or stations in the mesh network. In one design, the rank of a first station in the mesh network may be determined. At least one station of lower rank than the first station in the mesh network may be identified. At least one transmission parameter for the at least one station of lower rank may be set by the first station. In another aspect, stations may be assigned different transmission parameter values to achieve the data requirements of each station. At least one transmission parameter value may be selected for each station based on the rank, QoS requirements, amount of traffic, and/or achievable data rate for that station and may be sent (e.g., via a probe response message) to the station.
Abstract:
Flows admitted to a mesh node may be controlled through contention access parameters. The admitting node may determine a desired transmission opportunity duration, and a transmission opportunity frequency. Furthermore, the node may achieve the flow rate and delay bound requirements of the admitted flow based at least in part upon the desired transmission opportunity duration, and the transmission opportunity frequency. The data rate and the access frequency of the admitted node may be monitored at the physical access level. The flow rate requirement may be accomplished based at least in part upon an adjustment to the transmission opportunity duration. The delay bound requirement may be accomplished at least in part upon manipulation of the contention access parameters. The transmission opportunity duration and the access parameters may be determined by the upstream admitting nodes, which may reduce congestion near mesh portals, and accomplish increased data transfer.
Abstract:
Un método para controlar un flujo de tráfico en una red de malla, comprendiendo: recibir en un segundo nodo una solicitud de admisión de flujo de tráfico para admitir un flujo de tráfico de un primer nodo; determinar un volumen de tráfico para el segundo nodo; y determinar si admitir o denegar el flujo de tráfico del primer nodo utilizando el volumen de tráfico.
Abstract:
Mechanism to mitigate signal interference in ultra wide band (UWB) networks based on spatial reuse of the signal spectrum. Efficient media access control (MAC) in wireless networks is challenging because wireless devices may be affected by signal interference during spatial multiplexing. Wireless ad-hop (multi-hop) networks exploit the limited system bandwidth available via spatial reuse to enhance aggregate throughput. Spatial reuse allows concurrent data exchanges, resulting in higher throughputs.