Abstract: A system for coordinating a WLAN including MIMO WAP nodes supporting WLAN communications with an associated set of station nodes on a shared OFDM communication channel. A primary beam coordinator aggregates channel state information (CSI) for communication links and crosslinks between each WAP node and both associated and non-associated station nodes and extrapolates therefrom spatially distinct primary beam pattern setup options for each of the WAP nodes to enable substantially non-interfering concurrent downlink communications between each WAP node and a corresponding subset of its associated station nodes. The WAP nodes select a corresponding one of the primary beam options together with its associated stations as provided by the primary beam coordinator and generate the corresponding selected primary beam option for subsequent downlink communications to the associated subset of station nodes.

Abstract: Time and phase synchronization may enable distributed multiuser multiple-input multiple-output (MIMO) architectures and techniques, such as supported by the IEEE 802.11n standard, where several access points are connected to a central server and operate as a large distributed multi-antenna access point. The phase of all access points can be locked using a common reference (e.g., a synchronization tone) broadcasted over the air in conjunction with a predictive filter (e.g., a Kalman filter) which closely tracks the phase drift for each subcarrier channel.

Abstract: Each wireless access point in a network may transmit pilot bursts; receive pilot bursts; determine the timing, carrier frequency, and/or sampling frequency of each received pilot burst; determine an offset between the timing, carrier frequency, and/or sampling frequency of each received pilot burst and its own transmitted signals; and deliver one or more of these determined offsets to a computer server. The computer server may receive these offsets and, based on them, compute and deliver to each wireless access point a timing, carrier frequency, and/or sampling frequency correction factor. Each wireless access point may adjust its transmitted timing, carrier frequency, and/or sampling frequency in accordance with these correction factors.

Abstract: Systems and methods are described that provide not only time but also phase synchronization, thus enabling distributed multiuser multiple-input multiple-output (MIMO) architectures and techniques, such as supported by the IEEE 802.11n standard, where several access points are connected to a central server and operate as a large distributed multi-antenna access point. The systems and methods can lock the phase of all access points using a common reference (e.g., a synchronization tone) broadcasted over the air in conjunction with a predictive filter (e.g., a Kalman filter) which closely tracks the phase drift for each subcarrier channel.

Abstract: A system and method to create a base file for a document class is described. In one example embodiment, the system comprises a monitor to maintain a list of document components for a document class and an associated frequency of requests for the document components; a selector to select a plurality of document components with a highest frequency of request; and an aggregator to aggregate the plurality of document components to create a base file for the document class.

Abstract: The present application discloses methods and systems for configuring and managing class-based condensation. One aspect thereof includes an automated mechanism to receive a user request for a document, retrieve the document from a content server, and compare the document to a base file of a document class. If a delta-difference between the requested document and the base file is less than a predetermined threshold value, create a condensed document by abbreviating redundancy in the requested document relative to the base file of the associated document class, associate the document with the document class, and transmit the condensed document to the user. The documents within a document class possess similar layouts.

Abstract: In a packet-queue management system, a bandwidth allocation approach fairly addresses each of n flows that share the outgoing link of an otherwise congested router. According to an example embodiment of the invention, a buffer at the outgoing link is a simple FIFO, shared by packets belonging to the n flows. A packet priority-reduction (e.g., packet dropping) process is used to discriminate against the flows that submit more packets/sec than is allowed by their fair share. This packet management process therefore attempts to approximate a fair queuing policy. The embodiment is advantageously easy to implement and can control unresponsive or misbehaving flows with a minimum overhead.

Abstract: The present application discloses methods and systems for configuring and managing class-based condensation. One aspect thereof includes an automated mechanism to receive a user request for a document, retrieve the document from a content server, and compare the document to a base file of a document class. If a delta-difference between the requested document and the base file is less than a predetermined threshold value, create a condensed document by abbreviating redundancy in the requested document relative to the base file of the associated document class, associate the document with the document class, and transmit the condensed document to the user. The documents within a document class possess similar layouts.

Abstract: A system and method to create a base file for a document class is described. In one example embodiment, the system comprises a monitor to maintain a list of document components for a document class and an associated frequency of requests for the document components; a selector to select a plurality of document components with a highest frequency of request; and an aggregator to aggregate the plurality of document components to create a base file for the document class.

Abstract: The present application discloses methods and systems for configuring and managing class-based condensation. One aspect thereof includes an automated mechanism to receive a user request for a document, retrieve the document from a content server, and compare the document to a base file of a document class. If a delta-difference between the requested document and the base file is less than a predetermined threshold value, create a condensed document by abbreviating redundancy in the requested document relative to the base file of the associated document class, associate the document with the document class, and transmit the condensed document to the user. The documents within a document class possess similar layouts.

Abstract: The present application discloses methods and systems for configuring and managing class-based condensation. One aspect thereof includes an automated mechanism for creating classes and grouping requests within the classes. A second aspect includes an automated mechanism for selecting and updating an efficient class base file for each class. A third aspect includes an automated mechanism for maintaining the security of users by excluding private user information from the class base file.