Cisco Technology, Inc.

Arnold M Bilstad

Bretton Lee Douglas

Wenfeng Huang

David Sheldon Stephenson

Timothy S Olson

Sheausong Yang

Huizhao Wang

David E Halasz

Xiaode Xu

Daryl Arnold Kaiser

Richard D Rebo

Jonathan S Leary

Metin Ismail Taskin

Tania Sung-Yi Chen

Glade L Gauger

John Z Deng

Rajneesh Kumar

Prasad Prabhakar Jogalekar

Jay Wu Hong

Jason Kim

Daryl A Kaiser

In one embodiment, different physical layer standards are segregated into different frequency channels. In one implementation, 802.11b traffic and 802.11g traffic are segregated into different frequency channels. A network management tool allows the user to specify channels to either, e.g., 802.11b-only, 802.11g-only, 802.11b preferred and 802.11g discouraged, or 802.11g preferred and 802.11b discouraged. Access points are given the capability of preventing or discouraging client traffic of either given type.

Performance optimization for wireless networks with mixed modulation types

In one embodiment, a network device receives a request from a client in association with a connection, where the request indicates an amount of one or more resources that is requested to support the connection. The network device determines whether the amount of the resources is available. The network device may then allocate a level of the resources to the connection according to whether the amount of the resources is available.

Policy-based resource management

Methods, apparatuses and systems directed to facilitating WLAN diagnostics and management using traffic stream metrics. In a data collection stage, according to one implementation of the present invention, localized uplink measurements are taken at a wireless client associated with a wireless access point. During periodic intervals (e.g., every 5 seconds), the wireless client, in one implementation, transmits uplink measurement information to the wireless access point. The wireless access point may also take downlink measurements, which may also include one or more of the following metrics: observed latency, queuing delay, packet loss rate, and packet count information. The wireless access point, in one implementation, may aggregate and report the uplink and downlink metric information to a network management system. In a diagnostic stage, according to one implementation, a wireless network management module performs diagnostics of the WLAN based on the uplink and/or downlink metrics received from the wireless access-point.

WLAN diagnostics using traffic stream metrics

Significant improvements in throughput of networks employing disparate physical layer standards are provided. Different physical layer standards are segregated into different frequency channels. In one implementation, 802.11b traffic and 802.11g traffic are segregated into different frequency channels. A network management tool allows the user to specify channels to either, e.g., 802.11b-only, 802.11g-only, 802.11b preferred and 802.11g discouraged, or 802.11g preferred and 802.11b discouraged. Access points are given the capability of preventing or discouraging client traffic of either given type.

An apparatus and method for switching a mobile processing device from communicating over a wireless connection with a first base unit to a second base unit based upon latency. In accordance with this invention, the mobile processing device determines latency information for packets being transmitted over the wireless connection to and from a base unit. The latency information is compared to a threshold value. If the latency information is greater than the threshold value, the mobile processing device adjusts parameters of the wireless connection between the mobile processing device and the network.

Method and apparatus for optimizing cell operation toward better speech quality in wireless packet-switching networks

Methods for suppressing ring tones in cellular telephones and for informing a cellular telephone with configuration data are described. The method for informing a cellular telephone includes detecting a cellular telephone that enters a space time zone associated with the network. A property of the telephone is determined. Information is sent to the telephone that relates to the telephone property and a characteristic of the network space time zone.

Methods for ring tone supression informing and for informing a cellular telephone with configuration data

A method, an apparatus, and code in a carrier medium to operate in a first access point of a wireless network in communication with at least one associated client station. The method includes wirelessly broadcasting a management frame including an indication that the first access point will stop being active, such that each associated client station can wirelessly roam to a second access point prior to the first access point ceasing being active. One embodiment further includes reducing the transmit power of wireless communication used to wirelessly transmit information to the associated client stations, such that each associated client station can eventually wirelessly roam to the second access point.

Maintaining uninterrupted service in a wireless access point and client stations thereof

Determining the location of a radio tag or client station of a wireless network, and the location of coverage holes by receiving from a plurality of wireless stations of the wireless network path loss information of the path loss of one or more location frames received at the respective wireless stations. The location frames transmitted by the radio tag or client station having a pre-defined frame structure. The radio tags and client stations use a common infrastructure for transmitting a location frame configured for radiolocation by path loss measurement. The common infrastructure includes a pre-defined protocol common for both radio tags and client stations for transmitting information for reception by the plurality of stations of the wireless network for radiolocation. The pre-defined protocol includes using the location frame having the pre-defined frame structure.

Tag location, client location, and coverage hole location in a wireless network

Disclosed are methods and apparatus for automatically installing and/or aligning antennas of wireless bridges in computer networks. In general terms, when a particular bridge is installed or aligned, an installation mode is triggered which automatically displays an indication of one or more signal strength levels of signals received into the particular bridge. In the automatic installation mode, the particular bridge automatically searches for a remote bridge with which it can associate. After a remote bridge is associated with the particular bridge, the signal strength received by the particular bridge from the found bridge is then displayed on one or more indicators, such as light emitting diodes. Thus, one can then adjust the antenna of the bridge until an optimum power level is achieved without using any specialized equipment, such as a voltmeter or laptop for interfacing with the bridge to obtain the signal strength indication.

Growing community of inventors

Redwood, CA, United States of America

Arnold M Bilstad