Mediatek Corporation

Chin-Fa Hsu

Chun-Sheng Lee

Wei-Sheng Yin

Chung-Shine Huang

Hung-Shiun Fu

Chung-Cheng Yu

Dung-Yun Chen

An apparatus for coordinating radio activities in different radio access technologies (RATs) is provided. A first RAT module performs a first channel activity, related to a first RAT, for transmitting or receiving information to or from a first cellular network by using an antenna, and requests that a measurement activity, related to the first RAT, is to be performed for measuring signal power of a serving cell and/or at least one neighbor cell in the first cellular network by using the antenna. A second RAT module requests that a second channel activity, related to a second RAT, is to be performed for transmitting or receiving information to or from a second cellular network by using the antenna. An arbiter schedules performance of the measurement activity between the first and second channel activities.

Methods for coordinating radio activities in different radio access technologies and apparatuses utilizing the same

An electronic device capable of performing automatic frequency control (AFC) to maintain frequency and timing without good received bursts, in which an oscillation unit and a baseband processing unit are provided. Wherein, the baseband processing unit computes a compensation adjustment according to a prediction model and stored information regarding a previous digital value adjustment when detecting that the baseband processing unit is incapable of controlling the oscillation unit according to received bursts from the remote communication unit, and adjusts the oscillation unit according to the determined compensation adjustment.

Radio frequency control for communication systems

An communications apparatus with multiple radio access technologies (RATs) is provided. A first RAT module transceives radio frequency (RF) signals in a first cellular network through the antenna. A second RAT module transceives RF signals in a second cellular network through the antenna. An arbiter receives a first and a second request from the first and second RAT module requesting permission to use the antenna for a first and a second channel activity, obtains a priority configuration for the first channel activity versus the second channel activity when the second channel activity collides with the first channel activity, and responds to one of the first and second RAT modules with an acknowledgement message and to the other of the first and second RAT modules with a rejection message based on the obtained priority configuration.

Methods for scheduling channel activities for multiple radio access technologies in a communications apparatus and communications apparatuses utilizing the same

An apparatus for coordinating radio activities of different radio access technologies (RATs) includes a first RAT module, a second RAT module and an arbiter. The first RAT module receives and transmits radio frequency (RF) signals from and to a first cellular network through an antenna, and synchronizes transceiving timings with the first cellular network using a first clock. The second RAT module receives and transmits RF signals from and to a second cellular network through the antenna, and synchronizes transceiving timings with the second cellular network using a second clock. The arbiter coordinates a first radio activity requested by the first RAT module and a second radio activity requested by the second RAT module to avoid radio activity collision by using a third clock.

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Zhubei, Taiwan

Chin-Fa Hsu