1
Krishna Balachandran, Sanjiv Nanda, Srinivas R Kadaba, Richard P Ejzak: System and method for measuring channel quality information. Lucent Technologies, Carmen B Patti, Wildman Harrold Allen & Dixon, August 22, 2000: US06108374 (158 worldwide citation)

A system and method to measure channel quality in terms of signal to noise ratio for the transmission of coded signals over fading channels. A Viterbi decoder metric for the Maximum Likelihood path is used as a channel quality measure. This Euclidean distance metric is filtered in order to smooth ou ...


2
Krishna Balachandran, Sanjiv Nanda, Srinivas R Kadaba, Richard P Ejzak: System and method for measuring channel quality information in a communication system. Lucent Technologies, Carmen B Patti, Wildman Harrold Allen & Dixon, April 10, 2001: US06215827 (84 worldwide citation)

A system and method to measure channel quality in terms of signal to interference plus noise ratio for the transmission of coded signals over fading channels in a communication system. A Viterbi decoder metric for the Maximum Likelihood path is used as a channel quality measure for coherent and non- ...


3
Krishna Balachandran, Cristian Demetrescu, Richard Paul Ejzak, Sanjiv Nanda, Hong Xie: System for statistically multiplexing real-time and non-real-time voice and data traffic in a wireless system. Lucent Technologies, November 8, 2005: US06963544 (46 worldwide citation)

A system for providing statistical multiplexing of speech, other real-time data services and non-real-time data services for point to point and point to multipoint communications. The system has fast access and assignment procedures that allow the multiplexing of real-time, delay-critical data servi ...


4
Krishna Balachandran, Richard Paul Ejzak, Sanjiv Nanda: Method for interleaving of half rate channels suitable for half duplex operation and statistical multiplexing. Lucent Technologies, February 28, 2006: US07006477 (45 worldwide citation)

A system and method for providing wireless time division multiplexed communications in which time is divided into a plurality of frames and each frame is divided into N data bursts, which has a first multiplexer defining a channel as a series of bursts that occur periodically every N bursts once per ...


5
Krishna Balachandran, Richard P Ejzak, Sanjiv Nanda: System and method for incremental redundancy transmission in a communication system. Lucent Technologies, August 17, 2004: US06778558 (43 worldwide citation)

A system and method for incremental redundancy transmission in a communication system. A time slot is provided having at least one sub-slot with a fixed size, and a data block sized to fit in the sub-slot, a header having a one data block sequence number in the header for the time slot. A parity blo ...


6
Krishna Balachandran, Kirk K Chang, Richard Paul Ejzak, Wei Luo, Sanjiv Nanda: Method and apparatus for packet size dependent link adaptation for wireless packet. Lucent Technologies, May 20, 2003: US06567375 (42 worldwide citation)

Unlike earlier methods and systems in which Radio Link Control (RLC) performance was characterized in terms of the throughput, and the size of the higher layer Protocol Data Units (PDUs) or packets to be transferred was ignored, a method and apparatus is provided that is based on the delay of a high ...


7
Krishna Balachandran, Richard P Ejzak, Sanjiv Nanda, Shiv M Seth, Stanley Vitebsky, William Waung: System and method for link and media access control layer transaction initiation procedures. Lucent Technologies, September 23, 2003: US06625133 (42 worldwide citation)

A system and method of implementing a radio link protocol and dynamic partial echo management for a transaction oriented packet data communication system. A data backlog is described with a media access control layer controller and transmitting a BEGIN protocol data unit transmitted to a receiver. A ...


8
Krishna Balachandran, Sanjiv Nanda, Konstantinos Samaras: Burst based access and assignment method for providing real-time services. Lucent Technologies, February 7, 2006: US06996083 (40 worldwide citation)

A method and system for reducing delay in wireless communications by use of a burst based access and assignment system. The method for setting up a communication channel uses short burst(s) (essentially a slot of a time frame). Time is saved by keeping the uplink and downlink channels flexible and i ...


9
Victor Alexander Abramsky, Krishna Balachandran, Kirk Kuokuang Chang, Kiran M Rege: Combined RSSI/SNR-driven intermodulation-mitigation scheme for CDMA terminals. Lucent Technologies, Joseph J Opalach, April 18, 2000: US06052566 (38 worldwide citation)

A wireless receiver includes a variable attenuator, a signal-to-noise ratio (SNR estimator), and a received signal strength indicator (RSSI) level detector. The RSSI level of the received signal is used as a primary criterion on setting the attenuator status. Once the attenuator is set based upon th ...


10
Krishna Balachandran, Subrahmanyam Dravida, Richard P Ejzak, Sanjiv Nanda, Shiv M Seth, Stanley Vitebsky: Method and device for MAC layer feedback in a packet communication system. Lucent Technologies, December 13, 2005: US06975611 (36 worldwide citation)

A method and communication device for media access control feedback over a packet channel divided in channel time slots is provided. The channel time slots are divided into sub-channel time slots. A packet channel feedback field associated with each sub-channel time slot is defined. Acknowledgments ...