Patent
Method and apparatus for reducing the average transmit power of a base station
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TLDR
In this paper, a plurality of methods for achieving the soft or softer handoff process such that the performance of a system is improved are presented. But the authors do not consider the impact of the transmission power of the sector having the weakest signal strength.Abstract:
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.read more
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References
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Patent
System and method for generating signal waveforms in a CDMA cellular telephone system
Klein S. Gilhousen,Irwin M. Jacobs,Roberto Padovani,Lindsay A. Weaver,Wheatley Charles E,Andrew J. Viterbi +5 more
TL;DR: In this paper, a system and method for communicating information signals using spread spectrum communication techniques is presented, where PN sequences are constructed that provide orthogonality between the users so that mutual interference will be reduced, allowing higher capacity and better link performance.
Patent
Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system
TL;DR: A power control system for a cellular mobile telephone system in which system users communicate information signals between one another via at least one cell-site using code division multiple access spread spectrum communication signals is described in this paper.
Patent
Mobile station assisted soft handoff in a CDMA cellular communications system
TL;DR: In this article, a mobile station monitors the signal strength of pilots and reports the measured signal strength to a system controller via the base station through which it is communicating and terminates communication through the corresponding base station while communications through the other base station or base stations continue.
Patent
Method and system for providing a soft handoff in communications in a cdma cellular telephone system
TL;DR: In this article, the authors propose a system for directing communications between a mobile user and cell-sites as the mobile user changes cell-site service areas, which includes circuitry responsive to the indication for coupling communications between the mobile users and the other system users via the new cell site while the user remains in communication with the first cell site.
Patent
Diversity receiver in a cdma cellular telephone system
TL;DR: In this paper, a spread spectrum receiver subsystem for utilization in a CDMA cellular telephone having a searcher receiver (44) for scanning the time domain so as to use the PN processing gain and time discrimination properties of spread spectrum coding to determine the location and received signal strength of multiple receptions of a pilot signal traveling upon one or more physical propagation paths to reception.