Lsi Corporation

Avago Technologies General IP (singapore) Pte. Ltd.

Ze Mian Huang

Tao Wang

Michael Samuel Shaffer

Cheng Gang Duan

Lin Hua

Qian Xu

Lin Sun

Yifan Lin

A base station of a wireless system comprises a local clock source and timing circuitry coupled to the local clock source. The timing circuitry is configured to adjust at least one parameter of the local clock source based at least in part on timing information extracted from designated portions of each of one or more frames of a synchronous transport signal received in the base station. The base station may further comprise a physical layer device, such as a mapper, configured to extract the timing information from the designated portions of each of the one or more frames of the synchronous transport signal. The designated portions of the one or more frames of the synchronous transport signal from which the timing information is extracted may comprise designated overhead bytes of the one or more frames, such as, for example, transport overhead (TOH) bytes.

Base station timing control using synchronous transport signals

A communication device comprises a signal combiner, first storage elements, second storage elements and a controller. The signal combiner is configured to combine overhead information with additional information in forming a frame of a signal. The first storage elements are adapted to receive respective portions of a given block of the overhead information to be applied to the signal combiner, and the second storage elements are coupled between respective ones of the first storage elements and respective inputs of the signal combiner. The controller is operative to monitor a count of portions of the frame as the frame is formed by the signal combiner and to control loading of the portions of the given block of the overhead information into the second storage elements from the first storage elements responsive to the monitored count. The disclosed techniques for guaranteed consistent overhead insertion can be implemented in any type of communication system which utilizes overhead insertion in its framing operations.

Method and apparatus for signal formation with guaranteed consistent overhead insertion

An apparatus for monitoring of received information in a communication device comprises a first buffer having a plurality of storage elements adapted to store respective portions of the received information, a second buffer coupled to the first buffer and having a plurality of storage elements corresponding to respective ones of the storage elements of the first buffer, and controller circuitry coupled to the buffers and operative to detect a message sequence comprising a plurality of the portions of the received information. The second buffer stores a previously-detected message sequence loaded from the first buffer into the second buffer under control of the controller circuitry. The controller circuitry in detecting a current message sequence is configurable in at least first and second different monitoring modes each associated with a different message format. The monitoring mode of the controller circuitry may be adaptively configured based at least in part on a detected message sequence.

Received information monitor adaptive to multiple monitoring modes in a communication device

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Shanghai, China

Ze Mian Huang