Motorola Solutions, Inc.

Yuechun Chu

Shyamal Ramachandran

Avinash Joshi

John M Belcea

Keith J Goldberg

A method is provided to determine optimal data rate and packet length in mobile networks. The method directly determines the optimal packet length (L) and data rate (D), which allows fast convergence in the mobile channel. The method automatically identifies and quantifies channel conditions, as well as adjusts parameters according to changes of channel conditions. A variable (Channel condition Index (CCI)) is abstracted from simulations and then used to describe and quantify the impact of three components of channel conditions: signal-to-noise ratio (SNR), multipath environment and velocity. Based on packet completion rate (PCR) status, the channel condition is identified in terms of CCI value. Once CCI is identified, the model of effective throughput G is directly optimized to locate the best packet length (L) and data rate (D).

Method for determining data rate and packet length in mobile wireless networks

A device () and method for frequency scanning uses two radios. The device () includes a processor (), a scan radio () including a receiver () coupled to the processor (), and a data radio () including a transmitter () that is also coupled to the processor (). The processor () determines a transmission schedule for the transmitter () of the data radio () in response to a capability to receive a frequency scanning signal at the receiver () of the scan radio ().

Device and method for frequency scanning using two radios

A method is provided for enabling periodic scanning in a mesh network. The method includes transmitting from a first access point an announcement that it will be temporarily unavailable, wherein the announcement includes: a first information element for quieting a station associated with the access point during a time period; and a second information element for instructing a neighboring access point to temporarily suspend transmissions to the access point during the time period that the stations are quieted.

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Winter Springs, FL, United States of America

Yuechun Chu