Blackberry Corporation

Ericsson Gmbh

Steven Mark Morelen

Matthew Russell Greene

Keith Ronald Manssen

Carsten Hoirup

John Spears

Simon Andrew Hughes

Victor Galperin

Arun Naidu

A system that incorporates teachings of the subject disclosure may include, for example, a process that assigns a respective priority level to each of a number of tuning algorithms controlling different tunable elements of a communication device. A first tuning algorithm is executed according to a first priority level assigned to the first tuning algorithm. A remaining number of the tuning algorithms are executed to determine whether the first tuning algorithm has affected a tuning state of any of the remainder of tuning algorithms. A second of the number of tuning algorithms is executed in response to a stability condition of the first tuning algorithm and according to a second priority level assigned to the second tuning algorithm. Other embodiments are disclosed.

Methods and apparatus for tuning circuit components of a communication device

A system that incorporates teachings of the subject disclosure may include, for example, a method for detecting a plurality of use cases of a communication device, determining an initial tuning state for each of a plurality of tuning algorithms according to the plurality of use cases, configuring each of the plurality of tuning algorithms according to their respective initial tuning state, executing a first tuning algorithm of the plurality of tuning algorithms according to an order of execution of the plurality of tuning algorithms, detecting a stability condition of the first tuning algorithm, and executing a second tuning algorithm of the plurality of tuning algorithms responsive to the detected stability condition of the first tuning algorithm. Each tuning algorithms can control one of a tunable reactive element, a control interface, or both of one of a plurality of circuit components of a radio frequency circuit. Other embodiments are disclosed.

A system and method are provided for controlling the gain of signals transported over transmission media in a distributed antenna network. The system includes a plurality of remote antenna units where each remote antenna unit includes a signal level comparator for comparing the level of the signals received by the respective antenna unit with a predetermined reference level, and a gain controller for reducing the gain of the remote antenna unit when the signal level comparator determines that the level of the received signal exceeds said predetermined reference level. The system may accommodate TDMA systems when a gain controller is used that is fast enough to respond within the time slots of the received signals. As a result, the signal levels output from the remote antenna units are prevented from exceeding a maximum signal level.

System and method for controlling the level of signals output to transmission media in a distributed antenna network

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Cary, NC, United States of America

Steven Mark Morelen