Weblink Wireless, Inc.

Selwyn E Hill

Allan D Angus

Graham K Jones

John A Davis

Chi-Ming Chang

There is disclosed an improved base station for communicating with communication units in a wireless messaging system. According to an advantageous embodiment, the base station comprises: 1) a transmitter that is capable of transmitting messages to the communication units in a forward-channel having a first frequency range; 2) a receiver that is capable of receiving messages from the communication units in a reverse-channel having a second frequency range; and 3) an antenna that is capable of transmitting the forward-channel messages at a first angle of electrical downtilt below the horizon and receiving the reverse-channel messages at a second angle of electrical downtilt, wherein the second angle of electrical downtilt is less than the first angle of electrical downtilt.

Antenna system for narrowband communications systems and method of operation

There is disclosed a launch delay controller, for use in a wireless messaging system having a defined coverage area. The launch delay controller controls the transmission of paging messages from a plurality of transmitters in the wireless messaging system. The launch delay controller comprises: 1) a memory capable of storing a) a delay spread associated with a selected point in the coverage area between a first signal transmitted by a first of the plurality of transmitters and a second signal transmitted by a second of the plurality of transmitters, and b) distances between the selected point and the first and second transmitters; and 2) a processor capable of determining from the delay spread and the distances an offset delay, wherein the offset delay is used by the first transmitter to delay a transmission of the first signal with respect to a transmission of the second signal, the delayed transmission of the first signal thereby reducing the delay spread.

System and method for modeling simulcast delay spread and optimizing launch delays

A communications controller is disclosed for use in a wireless communication system having a plurality of antennas capable of simulcasting forward-channel messages at a first downtilt angle below horizon and receiving reverse-channel messages at a second downtilt angle, wherein the second downtilt angle is less than the first downtilt angle. The communications controller, which is associated with the plurality of antennas, is capable of (i) scheduling transmission of ones of the reverse-channel messages at a same frequency in a same time slot, and (ii) receiving reverse-channel messages of two communication units proximate a local antenna at separate more remote antennas in response to the second downtilt angle of the separate more remote antennas.

System for scheduling reverse-channel messages in narrowband communications systems and method of operation

Antenna system for narrowband communications systems and method of

System and method for modeling simulcast delay spread and optimizing

System for scheduling reverse-channel messages in narrowband

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Dallas, TX, United States of America

Selwyn E Hill