Performance of a Wireless Communication System
First Claim
1. A device to be used in a wireless communication system with CSMA-based MAC, comprising:
- means 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, wherein said second RTS message is transmitted after said first RTS message and before said transmission of said first data packet is finished, wherein said at least first and second data packet are transmitted on said transmission medium at least partially in parallel, and wherein said device is adapted to use said spatially selective antenna to direct a transmission null towards a first station for the transmission of said second RTS message, to direct a transmission peak towards said first station for the transmission of said first data packet, and to direct a transmission peak towards a second station for the transmission of said second 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 means 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 said device uses a distributed antenna that combines the antenna elements of several devices and that said device observers the transmissions of other devices, analyzes the observed transmissions for transmission patterns and adapts its own transmissions to said detected transmission patterns. The invention further relates to a system, a method and a computer program to be used in a wireless communication system.
122 Citations
16 Claims
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1. A device to be used in a wireless communication system with CSMA-based MAC, comprising:
- means 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, wherein said second RTS message is transmitted after said first RTS message and before said transmission of said first data packet is finished, wherein said at least first and second data packet are transmitted on said transmission medium at least partially in parallel, and wherein said device is adapted to use said spatially selective antenna to direct a transmission null towards a first station for the transmission of said second RTS message, to direct a transmission peak towards said first station for the transmission of said first data packet, and to direct a transmission peak towards a second station for the transmission of said second data packet.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A device to be used in a wireless communication system with CSMA-based MAC, comprising:
- means for transmitting one RTS message and at least a first and a second data packet on a transmission medium, and 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 device is adapted to use 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, and wherein said transmission of said first data packet takes place at least partially in parallel to the transmission of said second data packet.
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16. A method to be used in a wireless communication system with CSMA-based MAC, comprising the steps of:
- transmitting at least a first and a second RTS message and at least a first and a second data packet on a transmission medium, wherein said second RTS message is transmitted after said first RTS message and before said transmission of said first data packet is finished, wherein said at least first and second data packet are transmitted on said transmission medium at least partially in parallel, and wherein a spatially selective antenna is used to direct a transmission null towards a first station for the transmission of said second RTS message, to direct a transmission peak towards said first station for the transmission of said first data packet, and to direct a transmission peak towards a second station for the transmission of said second data packet.
Specification