Adaptive power control method for cellular systems

• US 7,239,886 B2
• Filed: 08/27/2004
• Issued: 07/03/2007
• Est. Priority Date: 08/27/2004
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Tayloe, Daniel R., Harris, John M., Hogberg, Shawn W., Gross, Jonathan H.
• Primary Examiner(s): Anderson; Matthew D.
• Assistant Examiner(s): SHARMA, SUJATHA R
• Application Number:
  US10/928,789
• Publication Number:
  US 20060046735A1
• Time in Patent Office: 1,040 Days
• Field of Search: 455/452.1, 455/453, 455/414.1, 455/522, 455/67.11, 455/436, 455/437, 370/329, 370/437, 370/468, 370/341, 370/342, 370/332, 370/431, 370/441, 370/335, 370/320
• US Class Current: 455/522
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 52/343 taking into account loading or congestion level

Abstract

A method for adaptive power control in a mobile communication system (100) determines (120) whether an RF loading factor (110) is greater than a threshold value. If the RF loading factor is above the threshold value, the method reduces call quality (140). Next, a determination is made whether the RF loading factor is below a second threshold value (150). If the RF loading factor is below the second threshold value, the call quality of the mobile communication system is increased (160).

Claims

1. In a mobile communication system, an adaptive power control method comprising the steps of:

determining by a network unit of the mobile communication system whether an RF loading factor is greater than a threshold value, wherein the network unit includes at least one of a base station and a base station controller;

measuring by the network unit the RF loading factor;

determining whether network resources are available for handling increased call loading; and

if network resources are available, dynamically reducing a call quality to increase call loading, wherein the step of dynamically reducing call quality includes steps of;

increasing by the network unit a frame erasure rate (FER); and

increasing power gain for signaling messages by the network unit.

2. In a mobile communication system, an adaptive power control method comprising the steps of:

determining by a network unit of the mobile communication system whether an RF loading factor is greater than a threshold value, wherein the network unit includes at least one of a base station and a base station controller;

measuring by the network unit the RF loading factor;

determining whether network resources are available for handling increased call loading; and

if network resources are available, dynamically reducing a call quality to increase call loading, wherein the step of dynamically reducing the call quality includes a step of decreasing by a network unit a power control sub-channel gain to a mobile station.

3. In a mobile communication system, an adaptive power control method comprising the steps of:

determining by a network unit of the mobile communication system whether an RF loading factor is less than or equal to a first threshold value, wherein the network unit includes at least one of a base station and a base station controller;

measuring by the network unit the RF loading factor;

if the RF loading factor is less than or equal to the first threshold value, determining by the network unit whether the RF loading factor is less than a second threshold value; and

if the RF loading factor is less than the second threshold value, dynamically increasing a call quality, wherein the step of dynamically increasing the call quality includes a step of increasing by a network unit a power control sub-channel gain to a mobile station.