Qualcomm Incorporated

Michael A Kongelf

Leif A Woodahl

Sanjay Kamath

Tingfang Ji

Alexandros Manolakos

Joseph Binamira Soriaga

Krishna Kiran Mukkavilli

Yongbin Wei

Muhammad Sayed Khairy Abdelghaffar

Joseph Patrick Burke

Michael Alexander Howard

Alexander Dorosenco

Carl Hardin

Hanfang Pan

Jay King

James Krysl

The transmission and reception group delay in a front end structure of a mobile device may be determined using closed loop calibration. The closed loop may be a near field radiated closed loop between pairs of antennas in an antenna array of the mobile device. The delay based on time of transmission and time of reception may be measured for a plurality of pairs of antennas, from which the transmit and receive group delay within a single path may be determined. The propagation delay of the signal between antennas may be included in the group delay calibration for increased accuracy. In another implementation, a conducted closed loop, e.g., in the transceiver or in a radio frequency switching network may be used to calibrate the group delay. Pre-characterization of the delay caused by components between the closed loop and antennas may be included in the group delay calibration for increased accuracy.

Calibration of group delay in a mobile device

According to a disclosed embodiment, a flow indication counter is incremented each time a data packet is transmitted from a buffer. When the number of data packets transmitted equals or exceeds a threshold number, a flow indication message comprising the buffer window size is generated and transmitted to the base station controller. Further, flow indication messages can be generated and transmitted every threshold time interval, independently of the number of data packets transmitted to ensure that flow indication messages are sent at least every preset time interval. Moreover, a system for flow control can be constructed comprising a flow indication counter module configured to provide an updated number of data packets transmitted. The system further comprises a window size monitoring module which determines the buffer window size and a message generating module which generates a flow indication message comprising the buffer window size.

Method and system for flow control between a base station controller and a base transceiver station

Systems and methodologies are described that facilitate automatically generating interleaved addresses during turbo decoding. An efficient recursive technique can be employed in which layers of nested loops enable the computation of a polynomial and a modular function given interleaved parameters 'a' and 'b' from a look up table. With the recursive technique, interleaved addresses can be generated, one interleaved address per clock cycle which can maintain turbo decoding performance.

Recursive realization of polynomial permutation interleaving

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San Diego, CA, United States of America

Michael A Kongelf