Transmission control for a wireless local area network station
First Claim
1. A local area network station for receiving and transmitting data on a single wireless transmission channel comprising:
- a receiver means for receiving data on said transmission channel;
a transmitter means for transmitting data on said transmission channel;
said receiver means comprising;
receive level determination means to provide a receive signal level representing a signal level received over said transmission channel;
threshold level circuit means to provide a level indicator signal in dependence upon a relative value of said receive signal level and a threshold level value; and
dynamic transmitter control means to control the operation of said transmitter means to transmit said data on said transmission channel when said level indicator signal indicates that the value of said receive level signal is below said threshold level value.
6 Assignments
0 Petitions
Accused Products
Abstract
In a local area network station (12) for a wireless LAN, a threshold level circuit (62) includes a register (134) which stores a threshold value. The station receiver (42) monitors the transmission channel and provides a receive level signal indicative of the signal level received. Transmission of a data frame by the station transmitter (46) is permitted or deferred according as the receive level signal value is below or above the threshold level, regardless of whether or not the received signal derives from a transmission by a station in the receiving station'"'"'s own LAN. The threshold is dynamically updated whenever the station (12) receives a data frame from its own LAN. An improved utilization of the wireless transmission channel is achieved.
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Citations
11 Claims
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1. A local area network station for receiving and transmitting data on a single wireless transmission channel comprising:
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a receiver means for receiving data on said transmission channel; a transmitter means for transmitting data on said transmission channel; said receiver means comprising; receive level determination means to provide a receive signal level representing a signal level received over said transmission channel; threshold level circuit means to provide a level indicator signal in dependence upon a relative value of said receive signal level and a threshold level value; and dynamic transmitter control means to control the operation of said transmitter means to transmit said data on said transmission channel when said level indicator signal indicates that the value of said receive level signal is below said threshold level value.
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2. A local area network station for receiving signals on a wireless transmission channel comprising:
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a receiver means for receiving signals; a transmitter means for transmitting signals; said receiver means comprising; receive level determination means to provide a receive signal level representing a signal level received over said transmission channel; threshold level circuit means to provide a level indicator signal in dependence upon a relative value of said receive signal level and a threshold level value; and transmitter control means to control the operation of said transmitter means in dependence upon said level indicator signal; said local area network station further comprising; user logic means to generate a request-to-send signal if it is desired to send a data frame; said transmitter control means being effective to provide a transmission enabling signal if said frequent-to-send signal is generated and said level indicator signal indicates that the value of said receive level signal is below said threshold level value. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9)
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10. A method of operating a local area network station on a single wireless transmission channel, wherein said station includes receiver means and transmitter means, including,, the steps of:
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(a) determining a receive signal level representing the signal level received by said receiver means over said transmission channel; (b) determining the relative value of said receive signal level and threshold level; and (c) controlling the operation of said transmitter means in dependence on said relative value; said controlling step being effected by inhibiting the operation of said transmitter means when said receive signal level is above said threshold level. - View Dependent Claims (11)
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Specification