Support of physical layer security in wireless local area networks
First Claim
1. A wireless transmit/receive unit (WTRU) device comprising:
- a processor;
a computer-readable storage medium comprising computer executable instructions which, when executed by the processor, implement at least one of a physical layer, a medium access control (MAC) layer, and a security manager;
the physical layer configured to receive a burst, perform measurements continuously, and report the measurements to the MAC layer to enable physical layer security;
the MAC layer configured to process the measurements received from the physical layer, detect a potential attack based on the measurements, and send a security alert to the security manager upon detection of the potential attack; and
the security manager configured to implement a counter-measure to the potential attack upon receipt of the security alert from the MAC layer to establish the physical layer security,wherein the measurement includes a channel impulse response (CIR), and the WTRU device further comprising;
a database configured to associate a source MAC address of a received packet and the CIR measured on the burst carrying the packet, wherein the MAC layer is configured to check consistency of the source MAC address-CIR pair and detect the potential attack on a condition that the source MAC address-CIR pair is not consistent.
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Accused Products
Abstract
A method and an apparatus for performing physical layer security operation are disclosed. A physical layer performs measurements continuously, and reports the measurements to a medium access control (MAC) layer. The MAC layer processes the measurements, and sends a security alert to a security manager upon detection of an abnormal condition based on the measurements. The security manager implements a counter-measure upon receipt of the security alert. The measurements include channel impulse response (CIR), physical medium power measurement, automatic gain control (AGC) value and status, automatic frequency control (AFC) gain and status, analog-to-digital converter (ADC) gain, Doppler spread estimate, and/or short preamble matched filter output. The security manager may switch a channel, switch a channel hopping policy, change a back-off protocol, or change a beamforming vector upon reception of the security alert.
30 Citations
24 Claims
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1. A wireless transmit/receive unit (WTRU) device comprising:
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a processor; a computer-readable storage medium comprising computer executable instructions which, when executed by the processor, implement at least one of a physical layer, a medium access control (MAC) layer, and a security manager; the physical layer configured to receive a burst, perform measurements continuously, and report the measurements to the MAC layer to enable physical layer security; the MAC layer configured to process the measurements received from the physical layer, detect a potential attack based on the measurements, and send a security alert to the security manager upon detection of the potential attack; and the security manager configured to implement a counter-measure to the potential attack upon receipt of the security alert from the MAC layer to establish the physical layer security, wherein the measurement includes a channel impulse response (CIR), and the WTRU device further comprising;
a database configured to associate a source MAC address of a received packet and the CIR measured on the burst carrying the packet, wherein the MAC layer is configured to check consistency of the source MAC address-CIR pair and detect the potential attack on a condition that the source MAC address-CIR pair is not consistent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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a physical layer performing physical layer measurements continuously; the physical layer reporting the measurements to a medium access control (MAC) layer to enable physical layer security; the MAC layer processing the measurements; the MAC layer sending a security alert to a security manager upon detection of a potential attack based on the measurements; and the security manager implementing a counter-measure to the potential attack upon receipt of the security alert from the MAC layer to establish the physical layer security, wherein the measurement includes a channel impulse response (CIR), and the method further comprising;
storing the CIR in a database, the CIR being associated with a source MAC address of a received packet; and
checking consistency of a source MAC address-CIR pair, wherein the potential attack is detected on a condition that the source MAC address-CIR pair is not consistent. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A wireless transmit/receive unit (WTRU) device comprising:
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a processor; a computer-readable storage medium comprising computer executable instructions which, when executed by the processor, implement at least one of a physical layer, a medium access control (MAC) layer, and a security manager; the physical layer configured to receive a burst, perform measurements continuously, and report the measurements to the layer to enable physical layer security; the MAC layer configured to process the measurements received from the physical layer, detect a potential attack based on the measurements, and produce a security-related quantity; and the security manager configured to use the security-related quantity or provide the security-related quantity to another entity to implement a counter-measure to the potential attack and establish the physical layer security, wherein the measurement includes a channel impulse response (CIR), and the WTRU device further comprising;
a database configured to associate a source MAC address of a received packet and the CIR measured on the burst carrying the packet, wherein the MAC layer is configured to check consistency of the source MAC address-CIR pair and detect the potential attack on a condition that the source MAC address-CIR pair is not consistent. - View Dependent Claims (18, 19, 20)
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21. A method comprising:
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a physical layer performing physical layer measurements continuously; the physical layer reporting the measurements to a medium access control (MAC) layer to enable physical layer security; the MAC layer processing the measurements received from the physical layer; the MAC layer detecting a potential attack based on the measurements and producing a security-related quantity; and a security manager using the security-related quantity or providing the security-related quantity to another entity to implement a counter-measure to the potential attack and establish the physical layer security, wherein the measurement includes a channel impulse response (CIR), and the WTRU device further comprising;
a database configured to associate a source MAC address of a received packet and the CIR measured on the burst carrying the packet, wherein the MAC layer is configured to check consistency of the source MAC address-CIR pair and detect the potential attack on a condition that the source MAC address-CIR pair is not consistent. - View Dependent Claims (22, 23, 24)
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Specification