Abstract: A selective blocker for targeted mobile terminals. A signal monitor determines when a targeted mobile terminal is transmitting a signal to a base station. A signal analyzer identifies characteristics of the terminal signal and a processor produces a blocking response based on one or more characteristics. The blocking response is transmitted to the targeted mobile terminal to block communications between the targeted mobile terminal and the base station using the minimum power needed to effectively block the terminal signal so as to limit interference with non-targeted mobile terminals.

Abstract: An apparatus (and corresponding methodology) for discovering beacon signals in a spread spectrum radio communication system is selectively operable in one of two modes. The first mode employs a local reference timing signal, while the second mode employs a GPS-derived reference timing signal. Preferably, the first mode identifies a baseline beacon signal that satisfies a constraint based upon time delays for detected beacon signals which are indicative of the relative distance of the transmitting base stations, thus providing selection of a baseline beacon signal that originates from a relatively close base station. The index of the baseline beacon signal is recovered and then used together with relative timing derived from the local reference timing signal to assign indices to other detected beacon signals.

Abstract: A method and apparatus for uniquely identifying signal sources in a multisource signal. True levels of signal components transmitted by each of the co-channel base stations in the area under test in a wireless network are measured and associated with the appropriate (originating) base station in presence of co-channel and adjacent-channel interference without interrupting service. The present invention is based on an “area-measurement” approach and relies on relative time-of-arrival (RTOA) measurements of the signal components impervious to the existence of the phase drift between the scanner and base stations.

Abstract: A test scanner located where it does not directly receive GPS signals relies on a second device, a reference transmitter with a GPS receiver, to provide time information. The reference transmitter has an internal GPS synchronized clock and a pilot transmission pattern that serves as a marker. The reference transmitter is positioned within close proximity to the test scanner. The reference transmitter periodically receives GPS signals and sets its reference internal clock accordingly. This reference transmitter transmits its highly recognizable signal with time synchronization information. The test scanner, able to distinguish between the reference pilot and base station pilot signals, receives the marked signal and uses the timing information to set the test scanner's internal clock. The test scanner can then perform a pilot scan of one or more CDMA base station pilot channels.

Abstract: A method and apparatus tests CDMA signal propagation and coverage. A pn scan is first made of the pilot channel to be measured. The signal to total power ratio, Ec/Io is calculated. A frequency scan is made of the reception frequency close in time to the pn scan. The frequency scan results are used to identify and quantify any interference adjacent and coincident with the CDMA channel of interest. The power of the interfering transmissions are weighted, interfering signals with frequencies close or within the CDMA channel of interest are given heavier weights. Removing weighted value of the interfering signals modifies and reduces the value of Io. An adjusted Ec/Io is calculated to reflect the modified Io value, thus resulting in an approximation of the Ec/Io value at the transmission site. The sources of interference can be reported to the CDMA carrier for remedial attention.