Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part
Reexamination Certificate
2000-08-17
2003-12-16
Trost, William (Department: 2683)
Telecommunications
Transmitter and receiver at separate stations
Having measuring, testing, or monitoring of system or part
C455S518000, C455S011100, C455S445000, C455S456500, C340S007200, C340S007210, C340S007240, C340S007270, C370S315000
Reexamination Certificate
active
06665521
ABSTRACT:
FIELD OF THE INVENTION
The present invention is directed to communication networks, and more particularly to separate mobile networks that work cooperatively.
BACKGROUND OF THE INVENTION
In the near future, wireless communication devices (pagers, cell phones, etc.) will begin incorporating secondary wireless protocols (such as Bluetooth, HomeRF, IEEE 802.11, etc.) that operate at lower power and over shorter distances. These secondary protocols generally use unlicensed spectrum and require minimal coordination with the primary communication protocol of the device (e.g., GSM, IS-95, IS-136, ReFLEX, etc.).
Potential applications of these low-power, short-range, secondary protocols are wireless connection of peripherals devices, high-speed data transfers to desktop computers and wireline networks, and establishment of short-range “pico-nets” between similar wireless devices.
Current wireless communication networks are subject to problems including link reliability and coverage holes requiring repeated packet retransmissions. Thus, there is a need for a method and apparatus that combines the short-range pico-net capabilities of a secondary protocol with techniques that would allow a cooperative receive/transmit diversity benefit for the primary wireless protocol.
REFERENCES:
patent: 5771463 (1998-06-01), Lehmusto et al.
patent: 5995500 (1999-11-01), Ma et al.
patent: 6289218 (2001-09-01), Liu
Michael P. Spratt, Message Passing To A Known Location, Jan. 24, 2002, US 2002/00009971 A1.
Gorday Paul Edward
Gorday Robert Mark
Sibecas Salvador
Crilly Daniel C.
Dudley Allison
Dulaney Randi L.
Ferguson Keith
Motorola Inc.
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