| Patent Number |
Title Of Patent |
Date Issued |
| 6470189 |
Method and apparatus in a wireless transceiver for seeking and transferring information availabl |
October 22, 2002 |
| A first transceiver (122) detects (402) a need for desired information available from a network server (108). In response to detecting the need and before contacting the network server, the first transceiver attempts (412) to obtain the desired information from another transceiver of a |
| 6459894 |
Method and apparatus for assisting a user to find a communication resource of sufficient capacit |
October 1, 2002 |
| A wireless communication system measures (602) a traffic load of ones of a plurality of fixed communication stations (102, 202) and transmits (606) from at least one of the stations information describing a location of the at least one of the stations and locations of nearby other statio |
| 6434391 |
Method and apparatus for channel pattern based managing inbound traffic in a two-way wireless me |
August 13, 2002 |
| A controller (112) defines (402) a channel pattern specifying a network destination for inbound channel traffic, a subscriber unit address group to which the channel pattern applies, and a predetermined time interval during which the channel pattern is to be active. The controller transm |
| 6389287 |
Method for prioritizing a communication in a wireless communication system |
May 14, 2002 |
| A wireless communication system receives (402) a communication specifying a portable subscriber unit (122) for which the communication is intended, and further indicating an originator location at which an originator of the communication is positioned. The system determines (404) a recip |
| 6298233 |
Method and apparatus in a two-way wireless communication system for detection and deferred repor |
October 2, 2001 |
| A portable subscriber unit (122) provides (402) communications for a user, and monitors (404) a parameter indicative of communication quality during the communications. The portable subscriber unit compares (406) the parameter with a predetermined threshold; and when the communication |
| 6298054 |
Method and apparatus in a wireless messaging unit for acquiring transmitter or receiver synchron |
October 2, 2001 |
| A wireless messaging unit (122) determines (704) that a first channel (402), which utilizes a first plurality of time slots for transmission, does not have a signal suitable for acquiring synchronization; and, in response, attempts (706) to acquire an initial synchronization with a s |
| 6263209 |
Method and apparatus in a wireless communication system for creating a learning function |
July 17, 2001 |
| A wireless communication system conducts (402) communications between a fixed portion (102) of the wireless communication system and a portable subscriber unit (122) carried by a user; and records (404) a relevant aspect of the communications, thereby producing recorded information. The |
| 6198931 |
Method for prioritizing a communication in a wireless communication system |
March 6, 2001 |
| A wireless communication system receives (402) a communication specifying a portable subscriber unit (122) for which the communication is intended, and further indicating an originator location at which an originator of the communication is positioned. The system determines (404) a recip |
| 6175740 |
Method and apparatus in a wireless communication system for adaptively selecting a resolution fo |
January 16, 2001 |
| A portable subscriber unit (122) and a controller (112) cooperate to maintain (402) a table (226, 326) identifying operations that utilize location information, and corresponding resolutions preferred for the location information when performing ones of the operations. When a request |
| 6169903 |
Method and apparatus in a wireless communication system for determining a location at which a su |
January 2, 2001 |
| Sub-areas (506) within a coverage area of a wireless communication system are defined (702), and transmitters (502, 504) are positioned within the sub-areas. A memory (212, 314), in at least one of a subscriber unit (122) and a controller (112) of the system, is programmed (706) with uni |
| 6167268 |
Method and apparatus for controlling scanning of a subscriber unit |
December 26, 2000 |
| A location is determined (402) at which a subscriber unit (122, 300) communicating with a first wireless system is positioned. A distance between the location and a second wireless system preferred by the subscriber unit is calculated (404), and, based upon the distance, it is decide |
| 6141543 |
Method and apparatus for simulcast space diversity transmission of a message in a radio messagin |
October 31, 2000 |
| At least two subsets (204, 208) of simulcast transmitters are defined (802) that produce differing simulcast distortion characteristics at a receiver (210), and a message is sent (806) in a simulcast transmission from one of the at least two subsets. The message is then repeated (808, 81 |
| 6091959 |
Method and apparatus in a two-way wireless communication system for location-based message trans |
July 18, 2000 |
| A table (328) is created (402) for mapping, for ones of a plurality of portable subscriber units (122), a plurality of message types to a corresponding plurality of locations. A message matching one of the plurality of message types is then received (404) by a controller (112), the m |
| 6084886 |
Method and apparatus for facilitating establishment of communications in a messaging system |
July 4, 2000 |
| A digital sync signal (502) is transmitted (702) from K transmitters (206) of a cluster (402), followed by K fine tuning signals (506) during K time slots (510), each time slot assigned to a transmitter. Each fine tuning signal comprises a pair of tones (512) separated in frequency by a |
| 6078801 |
Method and apparatus for optimized post detection filtering for simulcast receivers |
June 20, 2000 |
| A selective call receiver unit (100) having a post detection filtering system optimized for both simulcast delay spread and receiver sensitivity includes a receiver (20), a detector (30) for detecting a message and providing a detected signal, a first post detection filter (40) for f |
| 5926501 |
Method and apparatus for dynamic channel configuration |
July 20, 1999 |
| A controller (112) that dynamically configures a number of channels within a communication system (100) having a predetermined bandwidth comprises a processor (710) and memory (714), wherein the processor is programmed to receive a channel request (50) from a subscriber unit (122) for an |
| 5905945 |
Method and apparatus for improving the reliability of communicating a message from a portable su |
May 18, 1999 |
| A portable subscriber unit (104) monitors (602) a signal fading rate in an outbound channel from a base station (102), and transmits a message. The portable subscriber unit transmits (606) the message once on an inbound channel in response to the signal fading rate in the outbound channe |
| 5878352 |
Apparatus and method for selecting a transmitter for directed message delivery |
March 2, 1999 |
| A method and the corresponding messaging system of selecting a transmitter for directed message delivery set is a messaging system including a plurality of transmitters arranged and constructed to operate in a simulcast or non-simulcast mode, the method including directing a first an |
| 5852638 |
Method and apparatus for demodulating a symbol using symbol fragmentation, correlation and fouri |
December 22, 1998 |
| A method and apparatus receives a symbol and subdivides (720) the symbol into a plurality of fragments. The method and apparatus perform (704) for the plurality of fragments a plurality of correlations with at least one possible symbol value, thereby producing a plurality of complex valu |
| 5850605 |
Method and apparatus for dynamically grouping transmitters for message transmission in a communi |
December 15, 1998 |
| A communication system (100) for dynamically selecting transmitters (115) for message transmission includes the transmitters (115) for sending transmission signals and a portable messaging unit (105) for receiving the transmission signals, calculating signal strengths of the transmission |
| 5825811 |
Method and apparatus for facilitating inbound channel access |
October 20, 1998 |
| Inbound channel access is facilitated in a two-way messaging system (FIG. 1) utilizing a frequency-hopped spread-spectrum modulation technique on a set of hopping frequencies. First and second subsets of the set of hopping frequencies are defined (504), the first and second subsets being |
| 5809059 |
Method and apparatus for spread spectrum channel assignment |
September 15, 1998 |
| A controller (152) in a frequency hopped spread spectrum system (100) operating to assign a best available frequency hopping sequence among a plurality of sequences to at least one of a plurality of subscriber units (156) having predefined transmission intervals (12) and predefined t |
| 5805978 |
Method and apparatus for overlaying an inbound channel on an outbound system |
September 8, 1998 |
| A selective call two-way communication system having a plurality of selective call transceiver units (170) using an inbound channel overlay on an outbound selective call system, the selective call transceiver units comprising a receiver (173) for receiving a message having an address |
| 5671247 |
Method and apparatus for interference suppression in spread spectrum signals |
September 23, 1997 |
| Interference removal in spread spectrum signals, comprises the steps at a spread spectrum transmitter (10) of spreading information across a predetermined spectrum by phase modulating a repeating noise sequence (18), providing a spread spectrum signal and transmitting the spread spec |
