US 8,045,982 B2Granted

Methods for site selection in a multi-site communication system

AssigneeMotorola Solutions, Inc.

InventorsHun Weng Khoo, John P. Belmonte, Dipendra M. Chowdhary, Yueh Ching Chung, David G. Wiatrowski

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Abstract

A device detects a first signal on a channel that is one of a plurality of channels arranged in a first order on a list, with each channel being associated with a different site in a multi-site communication system. Upon detecting the first signal, the device attempts to measure and record signal strength of a signal at each channel on the list based on the first order beginning with the detected first signal, and selects as a home site the site associated with the channel having the signal with the highest recorded signal strength. The device rearranges the channels on the list into a second order based on the recorded signal strengths with the home site channel at the top. If necessary, the radio attempts to awaken its repeaters one after another based on the second order until a repeater is found to transmit a signal.

Claims13

Dependent claims

A method for selecting a home site while roaming in a multi-site communication system, the method comprising:

detecting a first signal on a channel in the communication system, wherein the channel is one of a plurality of channels that are arranged in a first order on a list of channels, and wherein each of the channels on the list is associated with a different site in a multi-site communication system;
upon detecting the first signal, attempting during a first time frame to measure and record signal strength of a signal at each of the channels on the list based on the first order and beginning with the detected first signal;
selecting as a current home site, the site associated with the channel on the list having the signal with a highest signal strength recorded during the first time frame;
and rearranging the channels on the list into a second order based on the signal strengths recorded during the first time frame;
attempting during a second time frame subsequent to the first time frame to measure and record signal strength of a signal at each of the channels on the list based on the second order and beginning with the channel associated with the current home site;
determining the channel from the list having the signal with a highest signal strength recorded during the second time frame;
determining whether the signal with the highest signal strength recorded during the second time frame can still be detected at a subsequent time to the second time frame;
if the signal with the highest signal strength recorded during the second time frame can still be detected, then selecting as a new home site, the site associated with the channel having the signal with the highest signal strength recorded during the second time frame, and rearranging the channels on the list into a third order based on the signal strengths recorded during the second time frame.

5 more elements

Dependencies are inferred from the claim text.