Qualcomm Incorporated

Other

M/a-com Government Systems, Inc.

Cable/home Communication Corp.

M/a-com Linkabit, Inc.

Brian K. Butler

S. Katherine Lam

Chong U. Lee

Ming-chang Tsai

Paul E. Jacobs

Roberto Padovani

Charles E., Iii Wheatley

Klein S Gilhousen

Lindsay A Weaver, Jr

Charles E Wheatley, Iii

Irwin M Jacobs

Brian K Butler

Andrew J Viterbi

Franklin Peter Antonio

Lindsay A Weaver

Charles Edward Wheatley

Edward George Tiedemann, Jr

Chong U Lee

Paul Eric Jacobs

Jeffrey Alexander Levin

Ephraim Zehavi

William Robert Gardner

Ming-Chang Tsai

Robert D Blakeney, Ii

S Katherine Lam

Ramin Rezaiifar

Matthew Stuart Grob

Rashid Ahmed Attar

Gadi Karmi

Gwain Bayley

William G Ames

Richard Finch Dean

Roy F Quick

Henry David Pfister

Jerrold A Heller

Edward G Tiedemann

Avneesh Agrawal

Samir Salib Soliman

Paul E Bender

Joseph P Odenwalder

Noam A Ziv

Alejandro Raul Holcman

Jack K Wolf

Karl E Moerder

Stephen S Carter

Michael V Harding

Charles F Newby

Timothy I Rueth

David B Munsinger

Charles F Newby, Jr

Michael Van Harding

Charles E Wheatly, Iii

Robert D Blakeney

Iii Wheatley Charles E

A novel and improved method and system for paging a cellular telephone or other wireless terminal using two paging channels that reduces standby mode power consumption described. In one embodiment of the invention, a minimally encoded quick paging channel is established over which short, quick page messages are transmitted during one of a set of quick paging slots. The quick page message indicates that a communications request has been received, and that the receiving communication terminals should process a highly encoded full paging channel over which more detailed, full page messages are transmitted during the next full paging slot. A terminal monitors full paging channel only after a quick page message has been received on the quick paging channel.

Dual event slotted paging

In a multiple-access network, network access terminals conduct peer-to-peer communications on reverse link channels of the network.

Peer-to-peer communications

A system and method for communicating information signals using spread spectrum communication techniques. PN sequences are constructed that provide orthogonality between the users so that mutual interference will be reduced, allowing higher capacity and better link performance. With orthogonal PN codes, the cross-correlation is zero over a predetermined time interval, resulting in no interference between the orthogonal codes, provided only that the code time frames are time aligned with each other. In an exemplary embodiment, signals are communicated between a cell-site and mobile units using direct sequence spread spectrum communication signals. In the exemplary embodiment, transmit power of mobile unit signals is controlled based on signal power received by the mobile unit and power adjustment commands sent to the mobile unit.

System and method for generating signal waveforms in a CDMA cellular telephone system

A system and method for communicating information signals using spread spectrum communication techniques. PN sequences are constructed that provide orthogonality between the users so that mutual interference will be reduced, allowing higher capacity and better link performance. With orthogonal PN codes, the cross-correlation is zero over a predetermined time interval, resulting in no interference between the orthogonal codes, provided only that the code time frames are time aligned with each other. In an exemplary embodiment, signals are communicated between a cell-site and mobile units using direct sequence spread spectrum communication signals. In the cell-to-mobile link, pilot, sync, paging and voice channels are defined. Information communicated on the cell-to-mobile link channels are, in general, encoded, interleaved, bi-phase shift key (BPSK) modulated with orthogonal covering of each BPSK symbol along with quadrature phase shift key (QPSK) spreading of the covered symbols. In the mobile-to-cell link, access and voice channels are defined. Information communicated on the mobile-to-cell link channels are, in general, encoded, interleaved, orthogonal signaling along with QPSK spreading.

A system and method for reducing the interference experienced by sensitive electronic devices, such as hearing aids, operative in the vicinity of CDMA user communication devices. A transmitter of the communications device is configured to transmit signal power substantially continuously at a full rate power level irrespective of the variable data rate at which the transmitter would otherwise be operative. In a first embodiment, a variable rate vocoder within the transmitter is directed to perform full-rate vocoding, irrespective of an instantaneous level of user speech. In a second embodiment, a microprocessor builds full-rate frames using repeated versions of code symbols generated by the vocoder. In a third embodiment, the microprocessor builds full rate frames by generating signaling bits of a predetermined pattern to pad otherwise non-full frames.

System and method for reducing interference generated by a CDMA communications device

A system and method for communicating information signals using spread spectrum communication techniques. PN sequences are constructed that provide orthogonality between the users so that mutual interference will be reduced, allowing higher capacity and better link performance. With orthogonal PN codes, the cross-correlation is zero over a predetermined time interval, resulting in no interference between the orthogonal codes, provided only that the code time frames are time aligned; with each other. In an exemplary embodiment, signals are communicated between a cell-site and mobile units using direct sequence spread spectrum communication signals. In the cell-to-mobile link, pilot, sync, paging and voice channels are defined. Information communicated on the cell-to-mobile link channels are, in general, encoded, interleaved, bi-phase shift key (BPSK) modulated with orthogonal covering of each BPSK symbol along with quadrature phase shift key (QPSK) spreading of the covered symbols. In the mobile-to-cell link, access and voice channels are defined. Information communicated on the mobile-to-cell link channels are, in general, encoded, interleaved, orthogonal signaling along with QPSK spreading.

A plurality of methods for achieving the soft or softer handoff process such that the performance of a system is improved. A first method is based on delaying the softer handoff process. A second method is based on reducing the power of transmissions from the sector having the weakest signal strength. A third method is based on eliminating transmissions from the sector having the weakest signal strength. A fourth method adds a new base station or sector only when the mobile unit is in need of additional power to operate properly. In all four methods, reverse link demodulation in each sector may continue with or without the transmission of the forward link. In all four methods the operation could be based on the signal strength of the reverse link signal or the forward link. It is also possible to combine two or more of these methods to create a hybrid method.

Method and apparatus for reducing the average transmit power of a base station

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Bozeman, MT, United States of America

Klein S Gilhousen