Wireless in-building telecommunications system for voice and data communications
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United States of America Patent
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Dec 12, 1995
Issued Date -
N/A
app pub date -
Jan 31, 1994
filing date -
Sep 29, 1989
priority date (Note) -
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Abstract
An improved network interface architecture for a packet switch provides a mechanism for handling voice and data packets. Bandwidth allocation can be changed because control and data memories are synchronized to one another. A hierarchical addressing technique is employed to enhance flexibility in handling packet information. This method permits packet message data and certain packet control data to be stored in memory locations without having to be duplicated at a different memory location prior to transmission of the packet. In an exemplary wireless TDMA packet network a control module (CM) sends a time stamp relative to the beginning of its frame in a synchronization packet allowing each of a plurality of user modules (UM) to maintain synchronization relative to the CM. The CM uses a plurality of directional antennas and transmits the synchronization packets over each antenna over a predetermined number of frames. The UMs use a receive time stamp to identify the beginning of a received synchronization packet. The difference between the time stamps combined with a delay constant is used by the UMs to adjust time synchronization to the CM frame. Packets are communicated between the controller and the peripherals at the UM and CM over a bus using a communication protocol which increases the efficiencies of packet communications by allowing additional direct command lines between the communications controller and peripherals.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- MOTOROLA MOBILITY LLC
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Bedlek, Gregory J | 510A Woodview Rd., Barrington, IL 60010 | 1 | 40 |
Berken, James J | 337 W. Greenfield Ave., Lombard, IL 60148 | 3 | 79 |
Freeburg, Thomas A | 416 N. Belmont Ave., Arlington Heights, IL 60004 | 59 | 3800 |
Mitzlaff, James E | 1727 N. Chestnut Ave., Arlington Heights, IL 60004 | 28 | 1190 |
Ogasawara, Roy T | 4430 N. Major Ave., Chicago, IL 60630 | 1 | 40 |
White, Richard E | 2591 College Hill Cir., Schaumburg, IL 60193 | 30 | 1286 |
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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