摘要:
There exists a need to reduce re-transmission delays in real time feeds (such as video) by sending the packet with sufficient repair/recovery information inside the packet container so the relaying stations and/or the receiving devices can fix errors in transmission by perusing the contents of the packet and the repair information, and modify the packet and then relay it. By providing the relaying station the ability to fix the error, retransmission of the packet is avoided along each relay station along the network path from source to destination and also by receiving devices that would otherwise request a re-transmission. This application teaches a method so real time streams (e.g. video) may be more efficiently transported over a CSMA based network.
摘要:
A self-forming VoIP connection capability is described that may be superimposed over wired networks, wireless networks, or combinations thereof. As described herein, a local network cluster forms while isolated from a conventional SIP server, or alternately may exist as a cluster of network nodes and clients that later becomes isolated from a conventional SIP server by a break in the network. Either way, each network node thus enabled with distributed SIP registry functionality according to this invention independently constructs a local SIP registry and SIP server capability within that node. Subsequently, while isolated from a conventional SIP server, VoIP conversations among client devices connected to nodes within an isolated cluster will continue, and nodes and clients may join or leave an isolated cluster with conversations able to be initiated or continued while a node has network connectivity to the cluster.
摘要:
An embodiment of the present invention addresses Beacon Synchronization issues related to multiple Simultaneously operating Pico-Nets that could be potentially interfering with each other's transmissions. Algorithms and support functions are described that determine the optimal staggering of Beacons in the Contention Access Period (CAP) of an IEEE 802.15.X Pico-Net, where 802.15.X denotes both 802.15.3 and 802.15.4 application sets. The objectives of this invention are related to both types of networks. The approach described is stable, scalable and efficient. It is comprehensive, in that it addresses all typical use cases for how Devices and Pico Net Controllers would need to coordinate beacon information to ensure trouble free operation.
摘要:
A system of aggregating messages utilizing at least one device transmitting at least one short communication message wherein said short communication message comprises a terse command or status message; at least one network router comprising a means of receiving the short communication messages; wherein said means receives said short communication message without interrupting other communications; and an uplink from the at least one router to an external ip-based network wherein said router aggregates said short communication messages and forwards the aggregated messages via the uplink to the external ip-based network wherein said external ip-based network comprises a tree-based logical network comprising wireless nodes.
摘要:
A self-forming VoIP connection capability is described that may be superimposed over wired networks, wireless networks, or combinations thereof. As described herein, a local network cluster forms while isolated from a conventional SIP server, or alternately may exist as a cluster of network nodes and clients that later becomes isolated from a conventional SIP server by a break in the network. Either way, each network node thus enabled with distributed SIP registry functionality according to this invention independently constructs a local SIP registry and SIP server capability within that node. Subsequently, while isolated from a conventional SIP server, VoIP conversations among client devices connected to nodes within an isolated cluster will continue, and nodes and clients may join or leave an isolated cluster with conversations able to be initiated or continued while a node has network connectivity to the cluster.
摘要:
A design and proof of concept of a new type of WLAN, complete with simulation and results from the simulation has been described. Each AP Node is implemented as a self-contained embedded OS unit, with all algorithms resident in its Operating system. The normal day-to-day functioning of the AP node is based entirely on resident control algorithms. Upgrades are possible through a simple secure communications interface supported by the OS kernel for each AP node. Benefits provided by a wireless network, as proposed in this invention, are that: it installs out of the box; the network is self-configuring; the network is redundant in that mesh network formalism is supported, ensuring multiple paths; load balancing is supported; there is no single point of failure; allows for decentralized execution; there is a central control; it is network application aware; there is application awareness; there is automatic channel allocation to manage and curtail RF interference, maximize non interference bandwidth and enable seamless roaming between adjoining wireless sub networks (BSS) and it supports the wireless equivalent for switching—for seamless roaming requirements.
摘要:
The functionality of multiple radio backhaul is extended to mobility applications. The multiple radio backhaul uses at least one radio for the uplink and at least one radio for the downlink, both operating in different, non-interfering channels. A mobile mesh node scans and/or samples multiple radio channels to determine the best parent mesh node to connect to. Techniques devised to scan/sample the external Radio Frequency (RF) environment without sacrificing the overall up time performance of the network are described.
摘要:
A structured wireless mesh network is disclosed where a tree-like connection topology is formed. In one embodiment, each node has separate uplink and downlink radios operating on different channels. When a cluster of such nodes becomes isolated as in the case of a mobile mesh application, a node in the cluster according to this invention acts as a root node thus enabling the tree structure to persist, even in isolation. Example methods of joining sub networks are disclosed that guide the joining of mesh networks and channel management. Nodes that may operate in isolation also support a distributed DHCP capability such that IP addresses are assigned to clients even when a connection to a central DHCP server is unavailable.
摘要:
In order to better manage VoIP transmissions between an AP and multiple voice client devices, methods are described that use synchronization techniques combined with packet concatenation to greatly reduce latency and jitter while enabling a much larger number of simultaneous conversations than would otherwise be possible. A TDMA-style methodology is superimposed over the standard CSMA/CA mechanism of 802.11 to provide the benefits of both mechanisms while remaining fully compatible with an industry standard protocol. The synchronization/concatenation mechanism may be optionally used in conjunction with a wireless mesh network to provide enhanced roaming as well as the ability for concatenated VoIP packets to be distributed over a wider area, and in much greater quantity, through the mesh.
摘要:
In order to better manage VoIP transmissions between an AP and multiple voice client devices, methods are described that use synchronization techniques combined with packet concatenation to greatly reduce latency and jitter while enabling a much larger number of simultaneous conversations than would otherwise be possible. A TDMA-style methodology is superimposed over the standard CSMA/CA mechanism of 802.11 to provide the benefits of both mechanisms while remaining fully compatible with an industry standard protocol. The synchronization/concatenation mechanism may be optionally used in conjunction with a wireless mesh network to provide enhanced roaming as well as the ability for concatenated VoIP packets to be distributed over a wider area, and in much greater quantity, through the mesh.