US 8,543,065 B2Granted

Methods for using effective radiated transmit power of a base station at a wireless communication device to determine uplink transmission range and/or to adjust transmit power

AssigneeMotorola Solutions, Inc.

InventorsSanjaykumar S. Karpoor, Thomas B. Bohn, Dipendra M Chowdhary, Kevin G. Doberstein, Bradley M. Hiben, Bob LoGalbo

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Abstract

Methods, systems and apparatus are disclosed for using effective radiated transmit power of a base station at a wireless communication device to determine whether the wireless communication device is within uplink transmission range of the base station. The wireless communication device can also use the effective radiated transmit power to adjust transmit power at the wireless communication device and save battery resources. In one implementation, the disclosed embodiments can be applied in a two-way wireless communication system.

Claims7

Dependent claims

A method for determining whether a wireless communication device is within uplink transmission range of a base station, comprising:

determining, at the base station comprising a transmit antenna and a receive antenna, an effective radiated transmit power of the base station based on:
an actual transmit power of the base station, a gain ratio of the transmit and receive antennas of the base station, a base station transmit feeder gain, and a base station receive feeder gain;
transmitting, from the base station, a beacon that includes the effective radiated transmit power for that base station;
receiving a radio frequency signal including the beacon at the wireless communication device;
and
computing, at the wireless communication device, a value of an estimated uplink received signal strength for the base station based on the effective radiated transmit power.

3 more elements

A wireless communication device, comprising:

a receiver configured to receive a beacon from a base station that includes a transmit antenna and a receive antenna, the beacon includes an effective radiated transmit power for that base station, wherein the base station is operable to compute the effective radiated transmit power of the base station based on:
an actual transmit power of the base station, a gain ratio of the transmit and receive antennas of the base station, a base station transmit feeder gain, and a base station receive feeder gain;
and
a processor configured to compute a value of an estimated uplink received signal strength for the base station based on the effective radiated transmit power, wherein the estimated uplink received signal strength value for the base station allows the base station to determine whether the wireless communication device is within uplink transmission range of the base station.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 12/956,967Filed 30 Nov 2010
Published: US 2012/0135777 A131 May 2012
Granted: 24 Sep 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

H04W 52/146
Separate analysis of uplink or downlink: uplink power control
H04W 52/40
TPC being performed in particular situations: during macro-diversity or soft handoff
H04W 52/10
TPC algorithms: open loop power control
H04W
Wireless communication networks

Family

US 2012/0135777 A1Pre-grant publication · published 31 May 2012
US 8,543,065 B2This patent

From the US filing history. Foreign family members aren’t listed.

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