Wireless communications receiver employing a unique combination of quick paging channel symbols to facilitate detection of a primary paging channel

A system for selectively demodulating a primary paging channel in a wireless communications system based on a quick paging channel comprising:

• first means for extracting pilot signal and a quick paging signal from a received signal, said quick paging signal having a slot with a first quick paging symbol and a second quick paging symbol;
• second means for estimating pilot signal strengths associated with said first quick paging symbol and said second quick paging symbol;
• third means for computing page energies and pilot energies associated with said first and second quick paging symbols;
• fourth means receiving and demodulating a forthcoming primary paging signal;
• and
• fifth means for selectively activating said fourth means, based on said pilot signal strengths, said page energies, said pilot energies, said pilot signal, and said paging signal.

A dual paging channel receiver comprising:

• a receiver for receiving a radio frequency signal and providing a digital baseband signal in response thereto;
• a received energy estimator for calculating a first energy associated with said digital baseband signal;
• a pilot computation circuit for extracting an estimate of a pilot signal from said digital baseband signal and computing an energy estimate of said pilot signal;
• a despreader circuit for extracting a quick paging channel signal component from said digital baseband signal;
• a demodulator and combiner for selectively combining said quick paging channel signal component and said pilot signal to yield a decision metric;
• a detector for providing an indication of the presence or absence of an immediately forthcoming page on a primary page on a primary paging channel of said received signal based on said decision metric.

A wireless communications device comprising:

• first means for receiving a radio frequency signal and providing a digital baseband signal in response thereto and for transmitting radio frequency signals;
• second means for calculating a first energy associated with said digital baseband signal provided by said first means;
• third means for extracting an estimate of a pilot signal from said digital baseband signal provided by said first means and computing an energy estimate of said pilot signal;
• fourth means for extracting a quick paging channel component from said digital baseband signal;
• fifth means for selectively combining said quick paging channel signal component and said pilot signal to yield a decision metric;
• sixth means providing an indication of the presence or absence of an immediately forthcoming page on a primary paging channel of said radio frequency signal received via said first means;
• and
• seventh means for selectively employing said first means, said fourth means, and fifth means to process a subsequent page of a primary paging channel in response to said indication and establishing a traffic channel in response to the processing of said subsequent page.

A system for interpreting a quick paging channel signal in a wireless communications system comprising:

• first means for analyzing a received signal and a signal environment associated with said quick paging channel to determine if one or more symbols of said received signal are valid and providing a first indication in response thereto, wherein said one or more symbols include a first symbol and a second symbol, and wherein said first means includes means for analyzing said signal environment and providing a parameter indicative of said signal environment via a pilot signal included in said received signal;
• second means for providing a value indicative of a message included in said quick paging channel based on said first indication and said one or more symbols;
• and
• third means for indicating that said first symbol and said second symbol are unreliable based on said parameter and selectively disabling said second means in response thereto.

A system for interpreting a quick paging channel signal in a wireless communications system comprising:

• a receiver circuit having an antenna and a receive chain, wherein said receiver circuit further includes:
• a sample random access memory (RAM) connected at an output of said receive chain,
• an interpolator connected at an output of said sample random access memory, wherein said sample RAM and said interpolator are included in a digital baseband processor, and
• a despreading circuit including a demodulator;
• a pilot estimation circuit in communication with said receiver, wherein said pilot estimation circuit includes a pilot estimator in communication with a pilot energy computation circuit;
• a total received energy computation circuit in communication with said receiver;
• a quick paging channel symbol combiner in communication with said pilot estimation circuit, said total received energy computation circuit, and receiver;
• and
• a page detector in communication with said quick paging channel symbol combiner.