1
Chih Lin I, Sarath Kumar, Sanjiv Nanda: Code division multiple access system providing load and interference based demand assignment service to users. Lucent Technologies, July 11, 2000: US06088335 (187 worldwide citation)

A code division multiple access system provides a way of allocating an increased data rate to a requesting mobile station. A mobile station requesting a data rate in excess of the basic data rate sends received pilot strength data for its base station and base stations in adjacent cells. The receive ...


2
Richard Paul Ejzak, Subhasis Laha, Sarath Kumar, Douglas Knisely, Sanjiv Nanda, Chih Lin I: Code division multiple access system providing enhanced load and interference based demand assignment service to users. Lucent Technologies, May 30, 2000: US06069883 (145 worldwide citation)

A code division multiple access system method and apparatus provides for allocation of increased bandwidth to a requesting mobile station. An access controller receives a data burst request (from either a requesting mobile station or from an external network already in connection with the mobile sta ...


3
Sarath Kumar, Sanjiv Nanda, Stanislav Vitebskiy: Burst-level resource allocation in cellular systems. Lucent Technologies, Mendelsohn & Associates PC, July 9, 2002: US06418148 (141 worldwide citation)

Bursts of additional bandwidth (e.g., one or more supplemental channels or a channel having variable bandwidth) is assigned to users (e.g., high-speed data users) in a cellular telecommunication system. A request for assignment of additional bandwidth may be an initial request, a continuation reques ...


4
Sarath Kumar, Quinn Li, Xiao C Wu: Using decoupled power control sub-channel to control reverse-link channel power. Lucent Technologies, Mendelsohn & Associates PC, August 13, 2002: US06434367 (99 worldwide citation)

In a wireless communications system, a base station transmits power control signals (e.g., the power control bits of a power control sub-channel) to a mobile using a forward-link channel that is decoupled from all other signals transmitted from that base station to that mobile. For example, the deco ...


5
Sarath Kumar, Sanjiv Nanda, Harvey Rubin, Stanislav Vitebskiy: Low back haul reactivation delay for high-speed packet data services in CDMA systems. Lucent Technologies, June 29, 2004: US06757270 (75 worldwide citation)

A back haul architecture effectively reduces the reactivation times for both forward-link and reverse-link data transmissions over CDMA wireless communications systems, by relying on packet-mode transmissions over the back haul between a frame selection/distribution (FSD) function and the appropriat ...


6
Sarath Kumar, Wen Yi Kuo, Kiran M Rege: Robust CDMA soft handoff. Lucent Technologies, June 6, 2000: US06073021 (61 worldwide citation)

A method for increasing the success rate for soft handoffs, particularly under rapidly fluctuating fading conditions, using traffic channels of active set base stations. In one embodiment of the present invention, increased success rate for soft handoffs is achieved using a candidate base station, i ...


7
Sarath Kumar, Sanjiv Nanda, Harvey Rubin, Stanislav Vitebskiy: Primary transfer for simplex mode forward-link high-speed packet data services in CDMA systems. Lucent Technologies, Mendelsohn & Associates PC, January 14, 2003: US06507572 (50 worldwide citation)

A back haul architecture enables efficient primary transfer (i.e., transfer of the designation of primary base station from one base station to another). A frame selection/distribution (FSD) function queues packets of forward-link data—to which sequence numbers have been assigned—for packet-mode tra ...


8
Sarath Kumar, Pantelis Monogioudis, Kiran M Rege, Ashwin Sampath: Enhanced metric for bit detection on fading channels with unknown statistics. Lucent Technologies, October 4, 2005: US06952561 (30 worldwide citation)

A universal mobile telecommunications system (UMTS) receiver uses Pilot Symbol Assisted Modulation (PSAM) in demodulating a received Binary Phase Shift Keying (BPSK) signal. The UMTS receiver uses a ratio of the transmitted energy per pilot symbol to the transmitted energy per data symbol as an inde ...


9
Sarath Kumar, Sanjiv Nanda, Lei Song: Method and apparatus for controlling the power radiated by a wireless terminal in a telecommunications system based on a variable step size. Lucent Technologies, Jason Paul DeMont, Wayne S Breyer, DeMont & Breyer, April 3, 2001: US06212399 (28 worldwide citation)

A technique for controlling the power with which a wireless terminal transmits is disclosed. One embodiment of the present invention comprises: transmitting a first signal at a first power level; receiving a series of n power control signals, b


10
Sarath Kumar, Wen Yi Kuo, Kiran M Rege: Method for performing a soft handoff. Lucent Technologies, August 1, 2000: US06097954 (26 worldwide citation)

The present invention increases the success rate of soft handoffs by enhancing the ability of a mobile-telephone to receive a handoff direction message that identifies the traffic channel being assigned to enable a candidate base station to communicate with the mobile-telephone. Specifically, the af ...