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US 9,318,799 B2Granted
Wireless communication apparatus and method for controlling antenna radiation patterns based on fading conditions
AssigneeBroadcom Corporation
InventorsSeppo Olavi Rousu, Marko Autti
Life of this patent
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Abstract
Measures for fading-based control of an antenna radiation pattern. Such measures may comprise reception of at least one radio wave signal via an antenna unit, detection of fading conditions in relation to the received at least one radio wave signal, and control of an antenna radiation pattern of the antenna unit, at least in terms of antenna lobe width, on the basis of the detected fading conditions.
Claims17
A method, implemented by a mobile device, of controlling an antenna radiation pattern, the method comprising:
- receiving at least one radio wave signal via an antenna unit;
- detecting a fading condition in relation to the received at least one radio wave signal, the detecting comprising determining a presence of one of a plurality of predefined fading scenarios;
- and
- controlling an antenna radiation pattern of the antenna unit in terms of antenna lobe width on the basis of the detected fading condition, the controlling comprising adjusting the antenna lobe width in accordance with the determined fading scenario,
- wherein the predefined fading scenarios comprise a line-of-sight (LOS) scenario and at least one scattering (NLOS) scenario, and the method further includes
- performing an initial determination on whether the fading condition belongs to one of the LOS scenario and the NLOS scenario,
- when the fading condition is determined to belong to the LOS scenario, adjusting the antenna lobe width to be a predetermined antenna lobe width corresponding to the LOS scenario without performing further measurements of at least one fading-related reception parameter, and
- when the fading condition is determined to belong to the NLOS scenario, performing further measurements of at least one fading-related reception parameter and adjusting the antenna lobe width to be one of a plurality of antenna lobe widths corresponding to the NLOS scenario.
5 more elements
A mobile device that controls an antenna radiation pattern, the mobile device comprising:
- circuitry configured to
- receive at least one radio wave signal via an antenna unit;
- detect a fading condition in relation to the received at least one radio wave signal, the detecting comprising determining a presence of one of a plurality of predefined fading scenarios;
- and
- control an antenna radiation pattern of the antenna unit in terms of antenna lobe width on the basis of the detected fading condition, the controlling comprising adjusting the antenna lobe width in accordance with the determined fading scenario,
- wherein the predefined fading scenarios comprise a line-of-sight (LOS) scenario and at least one scattering (NLOS) scenario, and
- the circuitry is further configured to
- perform an initial determination on whether the fading condition belongs to one of the LOS scenario and the NLOS scenario,
- when the fading condition is determined to belong to the LOS scenario, the circuitry is configured to adjust the antenna lobe width to be a predetermined antenna lobe width corresponding to the LOS scenario without performing further measurements of at least one fading-related reception parameter, and
- when the fading condition is determined to belong to the NLOS scenario, the circuitry is configured to perform further measurements of at least one fading-related reception parameter and adjust the antenna lobe width to be one of a plurality of antenna lobe widths corresponding to the NLOS scenario.
7 more elements
A non-transitory computer-readable medium including computer readable instructions stored thereon, the computer readable instructions being executable by a mobile device to cause the mobile device to perform a method comprising:
- receiving at least one radio wave signal via an antenna unit of the mobile device;
- detecting a fading condition in relation to the received at least one radio wave signal, the detecting comprising determining a presence of one of a plurality of predefined fading scenarios;
- and
- controlling an antenna radiation pattern of the antenna unit in terms of antenna lobe width on the basis of the detected fading condition, the controlling comprising adjusting the antenna lobe width in accordance with the determined fading scenario,
- wherein the predefined fading scenarios comprise a line-of-sight (LOS) scenario and at least one scattering (NLOS) scenario, and the method further includes
- performing an initial determination on whether the fading condition belongs to one of the LOS scenario and the NLOS scenario,
- when the fading condition is determined to belong to the LOS scenario, adjusting the antenna lobe width to be a predetermined antenna lobe width corresponding to the LOS scenario without performing further measurements of at least one fading-related reception parameter, and
- when the fading condition is determined to belong to the NLOS scenario, performing further measurements of at least one fading-related reception parameter and adjusting the antenna lobe width to be one of a plurality of antenna lobe widths corresponding to the NLOS scenario.
5 more elements
Dependencies are inferred from the claim text.