US 7885243

The USPTO database indicates that US Patent 7885243 is titled "High performance wireless networks using distributed control".

Here is a summary of US Patent 7885243:

• Title: High performance wireless networks using distributed control
• Assignee: Dynamic Mesh Networks Inc. (current assignee)
• Inventors: Francis da Costa, Sriram Dayanandan
• Filing Date: May 19, 2008
• Issue Date: February 8, 2011
• Abstract: The patent describes the design and proof of concept for a new type of Wireless Local Area Network (WLAN). Each Access Point (AP) Node is implemented as a self-contained embedded operating system unit with all algorithms resident within it. The AP node's daily operations are based entirely on these resident control algorithms, with upgrades possible through a simple, secure communications interface supported by the OS kernel. The wireless network offers several benefits, including out-of-the-box installation, self-configuration, redundancy through mesh network formalism (ensuring multiple paths), load balancing, no single point of failure, decentralized execution, central control through system-level tuning parameters, network application awareness, automatic channel allocation to manage RF interference, maximization of non-interference bandwidth, and seamless roaming between adjoining wireless sub-networks (BSS), including supporting wireless equivalent switching for seamless roaming.

Plain-Language Overview of Independent Claims:

The patent contains multiple independent claims across various categories, including methods, systems, and computer-readable media. Here's a plain-language overview of the representative independent claims:

Independent Method Claims (e.g., Claim 1, 28):

• Claim 1: Describes a method for managing a wireless network with multiple wireless communication nodes and an access server. Each node runs algorithms to select a "parent" node for data transmission to the network's root. The access server sets network characteristics, and the nodes then adjust their parent relationships to meet these characteristics. This includes managing latency, throughput, and congestion by adjusting a "cost of connectivity," and dynamically allocating channels.
• Claim 28: Focuses on a method for managing connectivity in a wireless network where each node determines available alternative paths to a root node based on routing information received from nearby nodes. It classifies these alternative paths and monitors potential connectivity for other nodes. If the number of alternative paths reduces to one for a node, a warning is sent to a network management system.

Independent System Claims (e.g., Claim 23, 29):

• Claim 23: Describes a wireless network system that includes a root node connected to an Ethernet and multiple wireless communication devices (AP nodes). Each AP node has at least two radios: one for communicating with local clients and other AP nodes (children), and another for communicating with its parent node. Each AP node runs algorithms to select a parent based on network characteristics set by an access server, facilitating features like load balancing and alternate routing.
• Claim 29: Describes a wireless communication node with an operating system storing algorithms. These algorithms enable the node to generate a public and private key (e.g., RSA) based on a unique identifier, and communicate its public key to an access server. The node also uses a common private key (received encrypted from the access server) for secure data encryption and decryption, with the access server able to periodically generate and transmit new private keys. This describes a secure key distribution method.

Independent Computer-Readable Medium Claims (e.g., Claim 26, 30):

• Claim 26: Describes a computer-readable medium containing instructions that, when executed by a processor in a wireless communication node, cause the node to implement the method of managing network connectivity as described in Claim 1 (e.g., selecting parents based on access server parameters, managing latency, throughput, and congestion).
• Claim 30: Describes a computer-readable medium with instructions that, when executed by a processor in a wireless communication node, cause the node to implement the secure key distribution method of Claim 29 (e.g., generating keys, transmitting public key, using received private key for secure communication).

CAFC 2026 Dockets Search:

A search for US patent 7885243 in CAFC 2026 dockets did not return specific cases directly listing this patent number. The search results show recent CAFC activity in 2026, including a decision vacating a PTAB obviousness determination for a Federal Express patent (U.S. Patent No. 8,766,797) and a precedential opinion affirming the dismissal of patent infringement claims due to patent-ineligibility for US Pat. No. 7,679,637. However, none of these directly relate to US7885243.