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US 9,313,655 B2Granted
Location privacy in communication networks
AssigneeNokia Corporation
InventorsPhilip Ginzboorg, Lars Eggert, Mika Kasslin
Life of this patent
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Abstract
A method including changing an access address of a network interface of a wireless network node, changing a frame sequence number of a network interface of the wireless network node in an unpredictable manner, and performing the changing of the access address and changing of the frame sequence number in a coordinated manner.
Claims15
A method comprising:
- changing an access address of a network interface of a wireless network node,
- changing a frame sequence number of the network interface of the wireless network node in an unpredicted manner,
- performing said changing of the access address and changing of the frame sequence number substantially at the same time;
- and thereafter
- transmitting a frame to or from the wireless network node having a header comprising the changed access address and the changed frame sequence number;
- the method further comprising avoiding changing of said access address and frame sequence number during sending of a fragmented data packet.
3 more elements
An apparatus comprising:
- at least one processor;
- and
- at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processor, cause the apparatus at least to perform:
- changing an access address of a network interface of the apparatus,
- changing a frame sequence number used by the network interface of the apparatus in an unpredicted manner,
- performing said changing of the access address and changing of the frame sequence number substantially at the same time;
- and thereafter
- transmitting a frame having a header comprising the changed access address and the changed frame sequence number;
- the at least one memory and the computer program code configured with the at least one processor to cause the apparatus further to avoid changing of said access address and frame sequence number during sending of a fragmented data packet.
6 more elements
A non-transitory computer readable memory storing computer executable program code which, when executed by at least one processor of an apparatus, causes the apparatus to:
- change an access address of a network interface of the apparatus,
- change a frame sequence number used by the network interface of the apparatus in an unpredicted manner,
- perform said changing of the access address and changing of the frame sequence number substantially at the same time;
- and thereafter
- transmitting a frame to or from the wireless network node having a header comprising the changed access address and the changed frame sequence number;
- the method further comprising avoiding changing of said access address and frame sequence number during sending of a fragmented data packet.
3 more elements
Dependencies are inferred from the claim text.