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| Number | Title | Issue Date |
| 6546248 | Method and apparatus for generating pilot strength measurement messages A method and apparatus for generating an autonomous Pilot Strength Measurement Message (PSMM) by a mobile station traveling in a multi-carrier wireless communication system. In a multi-carrier system, the mobile station receives the pilot channel of a bas... | 04/08/2003 |
| 6546243 | Method and system for over-the-air (OTA) service programming A communications network and method for over the air service programming a mobile station (2), where the mobile station transmits a service programming request to a communications network, which results in the mobile station (2) being connected to a custo... | 04/08/2003 |
| 6490357 | Method and apparatus for generating encryption stream ciphers A method and an apparatus for generating encryption stream ciphers are based on a recurrence relation designed to operate over finite fields larger than GF(2). A non-linear output can be obtained by using one or a combination of non-linear processes to fo... | 12/03/2002 |
| 6487179 | Methods for preventing and detecting message collisions in a half-duplex communication system In a half-duplex communication system in which additional delays in the communication channel may cause a message collision between a message and a response, a collision detector is utilized to prevent and detect message collisions. The collision detector... | 11/26/2002 |
| 6484138 | Method and apparatus for performing speech frame encoding mode selection in a variable rate encoding system It is an objective of the present invention to provide an optimized method of selection of the encoding mode that provides rate efficient coding of the input speech. It is a second objective of the present invention to identify and provide a means for gen... | 11/19/2002 |
| 6456964 | Encoding of periodic speech using prototype waveforms A method and apparatus for coding a quasi-periodic speech signal. The speech signal is represented by a residual signal generated by filtering the speech signal with a Linear Predictive Coding (LPC) analysis filter. The residual signal is encoded by extra... | 09/24/2002 |
| 6212659 | Method and apparatus for providing error protection for over the air file transfer In a communication system which conforms to the IS-99 standard, a concatenated code is used to provide for error free file transfer over the air. The concatenated code comprises Reed-Solomon coding, CRC block coding, and convolutional coding. The file is ... | 04/03/2001 |
| 6205339 | Method and apparatus for establishing TDD/TTY service over vocoded channels A method and apparatus to facilitate service negotiation by a digital telecommunications system that allows a low activity communication to be transmitted by the system over vocoded channels. In one embodiment, once the telecommunication system is noticed... | 03/20/2001 |
