Replies to post #327 on IDCC Premium Board (IDCC)

[Gamco]

United States Patent 7,616,677
Koo , et al. November 10, 2009

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Downlink power control with limit to dynamic range using detection of downlink transmit power


Abstract
An apparatus and method is provided for dynamic range power control of a wireless downlink communication signal, such that target signal quality adjustments are held temporarily when it is apparent that transmit power control commands will not produce the desired response at the transmitting station. Comparisons of measured received signals to thresholds are performed to determine whether the transmitting station has either reached the maximum or minimum transmit power, in which case the target signal quality adjustment is controlled accordingly. When normal transmit power is detected, the target signal quality adjustments are allowed to resume as usual.


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Inventors: Koo; Chang-Soo (Melville, NY), Cuffaro; Angelo (Laval, CA), Shin; Sung-Hyuk (Northvale, NJ)
Assignee: InterDigital Technology Corporation (Wilmington, DE)

Appl. No.: 10/901,795
Filed: July 29, 2004

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Related U.S. Patent Documents

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Application Number Filing Date Patent Number Issue Date
60491187 Jul., 2003


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Current U.S. Class: 375/141 ; 370/252; 370/318; 375/146; 375/147; 455/127.1; 455/13.4; 455/522
Current International Class: H04L 27/30 (20060101)
Field of Search: 375/140,141,146,147 370/252,318,320,342,441 455/13.4,522,127.1

[revlis]

An MIH patent.

United States Patent 7,616,956
Olvera-Hernandez , et al. November 10, 2009

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Measurement request report extensions for media independent handover

SUMMARY

The present invention is a method and system for use in connection with the IEEE 802.21 standard to request measurements, in the form of events, in conjunction with existing Measurement Request and Measurement Report messages applicable to 802.11-based and 802.16-based networks. The invention takes advantage of the existing measurement mechanism that provides similar information, but does not generate triggers.

The invention provides a method to configure MIH triggers, using existing 802.11k and 802.16 procedures. The triggers are generated toward a higher layer in conjunction with generating measurement reports towards a peer. The triggers can also be generated independently of the peer-to-peer measurement reports, but uses the measuring capabilities from the underlying layers.

A method for generating a MIH trigger in a WLAN begins by sending a measurement report request message to a measurement entity in the network. The measurement entity takes the measurements and sends a measurement report response message to a MAC function. The MAC function evaluates the measurements and determines whether a handover condition exists, based on the measurements. The MAC function generates a MIH trigger if the handover condition exists.

A method for generating a MIH trigger in a WLAN includes the steps of determining whether a handover condition exists and generating the MIH trigger by a MAC function if the handover condition exists.

An apparatus for generating a MIH trigger in a WLAN includes a measurement device, a MAC device, and a MIH device. The measurement device is configured to take measurements in the WLAN. The MAC device is in communication with the measurement device, and is configured to generate a MIH trigger based on measurements taken by the measurement device. The MIH device is in communication with the MAC device and is configured to perform a handover upon receipt of the MIH trigger from the MAC device.

A communication frame for providing MIH information in a WLAN includes a MIH information field and a MIH measurement mode field.