Devices systems and methods for improving performance of a wireless communication system
First Claim
1. A wireless communication device comprising:
- a transmitter for;
(1) transmitting a first Request-to-Send (RTS) message and a first data packet to first station through a spatially selective antenna;
(2) at least partially concurrently transmitting a second RTS message or a second data packet to a second station through said spatially selective antenna; and
wherein said spatially selective antenna;
(1) during transmission of an RTS to a given station, directs a null towards another station; and
(2) during transmission of a given data packet, directs a transmission peak towards a station intended to receive the given data packet.
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Accused Products
Abstract
The invention relates to a device to be used in a wireless communication system with CSMA-based MAC, comprising transmitting circuitry for transmitting at least a first and a second RTS message and at least a first and a second data packet on a transmission medium, and a spatially selective antenna. It is further proposed that the device uses a distributed antenna that combines the antenna elements of several devices and that the device observes the transmissions of other devices, analyzes the observed transmissions for transmission patterns and adapts its own transmissions to the detected transmission patterns. The invention further relates to a system, a method and a computer program to be used in a wireless communication system.
61 Citations
16 Claims
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1. A wireless communication device comprising:
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a transmitter for;
(1) transmitting a first Request-to-Send (RTS) message and a first data packet to first station through a spatially selective antenna;
(2) at least partially concurrently transmitting a second RTS message or a second data packet to a second station through said spatially selective antenna; andwherein said spatially selective antenna;
(1) during transmission of an RTS to a given station, directs a null towards another station; and
(2) during transmission of a given data packet, directs a transmission peak towards a station intended to receive the given data packet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A wireless communication device comprising:
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a transmitter for transmitting one Request-to-Send (RTS) message and at least a first and second data packets on a transmission medium; a spatially selective antenna; wherein said one RTS message contains information on at least a first and a second station to which said at least first and second data packet are to be transmitted, respectively; wherein said transmission of said first data packet takes place at least partially in parallel to the transmission of said second data packet; and wherein said device uses said spatially selective antenna to direct a transmission peak towards said first station for the transmission of said first data packet and a transmission peak towards said second station for the transmission of said second data packet.
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16. A wireless communication device comprising:
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a transmitter for transmitting a first Request-to-Send (RTS) message and a data packet on a transmission medium and for transmitting a NULL message, which indicates that said transmission medium is idle; a spatially selective antenna; wherein said NULL message is transmitted after the transmission of said first RTS message and before the transmission of said data packet is finished; and wherein said device uses said spatially selective antenna to direct a transmission null towards a first station for said transmission of said NULL message and to direct a transmission peak towards said first station for said transmission of said data packet.
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Specification