Wi-lan Inc.

Texas Instruments Corporation

Kirupairaj Asirvatham

Yair Bourlas

John R Rosenlof

Srikanth Gummadi

Peter Graumann

Siavash Sheikh Zeinoddin

Peifang Zhang

Methods and apparatus for communicating and utilizing persistent allocation of resources are described herein. A base station may allocate persistent resources to a client station, and may associate the client station or persistent resource allocation with a particular shared NACK channel. The base station may monitor the NACK channel for a NACK indicating a map error. The base station may monitor the resource allocation to implicitly determine a map error. The base station may resend one or more persistent resource allocation information elements in response to the NACK or implicit error determination. A client station having a persistent resource allocation may monitor persistent resource allocation information elements in map messages and/or may indicate failure to receive a persistent resource allocation information element in a NACK message on a shared NACK channel.

Base station configured for operation based on persistent resource allocation information

Client station configured for operation based on persistent resource allocation information

Base station configured for persistent resource allocation

Error correction for a persistent resource allocation

Methods and apparatus for communicating and utilizing persistent allocation of resources are described herein. A base station can allocate persistent resources to a client station, and can associate the client station or persistent resource allocation with a particular shared NACK channel. The base station can monitor the NACK channel for a NACK indicating a map error. The base station can also monitor the resource allocation to implicitly determine a map error. The base station can resend one or more persistent resource allocation information elements in response to the NACK or implicit error determination. A client station having a persistent resource allocation can monitor persistent resource allocation information elements in map messages and can indicate failure to receive a persistent resource allocation information element in a NACK message on a preassigned share NACK channel.

The subject matter disclosed herein provides methods and systems for converting fixed-point soft bit values, provided by a demapper, into floating-point soft bits values. In one aspect, there is provided a method. The method may include receiving, from a demapper, soft bits formatted as a fixed-point value. Moreover, the soft bits may be converted from the fixed-point value to a floating-point value. The floating-point value is punctured to remove a bit. The converted soft bits are provided to a buffer to enable decoding of the buffered soft bits. Related systems, apparatus, methods, and/or articles are also described.

Demapper using floating-point representation of soft bits

A communications receiver is provided that includes a first and second compensators a pilot tracker and a demodulator. The first compensator is operable to adjust an input signal based on both a coarse frequency offset and a fine frequency offset to produce an adjusted input signal. The pilot tracker determines an estimated residual frequency offset based on at least a portion of the adjusted input signal. The demodulator determines at least a first symbol sequence and a second symbol sequence based on the adjusted input signal. The second compensator is operable to adjust the first symbol sequence and the second symbol sequence based on the estimate residual frequency offset.

Phase advance compensation for MIMO time-switch preamble modes

A method and apparatus permit a wireless communication device to be calibrated during manufacturing and subsequently re-calibrated while in use to correct for the effects of temperature changes on transmit power.

Growing community of inventors

San Diego, CA, United States of America

Kirupairaj Asirvatham