# US 10,771,438 B2 · Context-based protocol stack privacy

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- Number: US 10,771,438 B2
- Document ID: US10771438B2
- Status: Granted
- Kind: B2
- Application number: 15/540,457
- Filed: 2015-12-31
- Published: 2017-12-28
- Granted: 2020-09-08
- Earliest claimed: 2014-12-31
- Assignees: InterDigital Patent Holdings, Inc.
- Applicants: Interdigital Patent Holdings, Inc.
- Inventors: Juan Carlos Zuniga; Carlos Jesus Bernardos
- Web page: https://patentgrep.com/patent/US10771438B2

## CPC

- H04L 61/5014: using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
- H04L 63/0407: {wherein the identity of one or more communicating identities is hidden (cryptographic mechanisms or cryptographic arrangements for anonymous credentials or for identity based cryptographic systems H04L9/00)}
- H04L 63/0421: {Anonymous communication, i.e. the party's identifiers are hidden from the other party or parties, e.g. using an anonymizer}
- H04L 63/102: {Entity profiles}
- H04L 63/16: {Implementing security features at a particular protocol layer}
- H04W 12/03: Protecting confidentiality, e.g. by encryption
- H04W 12/08: Access security
- H04L 2101/622: Layer-2 addresses, e.g. medium access control [MAC] addresses
- H04W 12/02: Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A method for use in a wireless transmit/receive unit (WTRU), the method comprising: selecting a privacy profile, wherein the privacy profile includes privacy and security settings for each layer of a protocol stack of the WTRU, wherein the privacy and security settings include at least one of using anonymous dynamic host configuration protocol (DHCP) signaling parameters, the anonymous DHCP signaling parameters include a hostname, using a random medium access control (MAC) address, or using a random Internet protocol (IP) address; and instructing each layer of the protocol stack of the WTRU with the privacy and security settings based on the selected privacy profile.

## Claims

### Claim 1

A method for use in a wireless transmit/receive unit (WTRU), the method comprising:
selecting a privacy profile, wherein the privacy profile includes privacy and security settings for each layer of a protocol stack of the WTRU, wherein the privacy and security settings include at least one of (1) using anonymous dynamic host configuration protocol (DHCP) signaling parameters, the anonymous DHCP signaling parameters including a hostname, (2) using a non-static medium access control (MAC) address, and (3) using a non-static Internet protocol (IP) address; and
instructing each respective layer of the protocol stack of the WTRU with the privacy and security settings based on the selected privacy profile.

### Claim 2 (depends on 1)

The method of claim 1, wherein the privacy and security settings include using non-static dynamic host configuration protocol (DHCP) signaling parameters.

### Claim 3 (depends on 2)

The method of claim 2, wherein the non-static DHCP signaling parameters include a hostname.

### Claim 4 (depends on 1)

The method of claim 1, wherein the selected privacy profile includes a different configuration at each layer of a protocol stack.

### Claim 5

A wireless transmit/receive unit (WTRU), the WTRU comprising:
a processor configured to select a privacy profile, wherein the privacy profile includes privacy and security settings for each layer of a protocol stack of the WTRU, wherein the privacy and security settings include at least one of (1) using anonymous dynamic host configuration protocol (DHCP) signaling parameters, the anonymous DHCP signaling parameters including a hostname, (2) using a non-static medium access control (MAC) address, and (3) using a non-static Internet protocol (IP) address; and
a transmitter configured to transmit instructions to each respective layer of the protocol stack of the WTRU with the privacy and security settings based on the selected privacy profile.

### Claim 6 (depends on 5)

The WTRU of claim 5, wherein the privacy and security settings include using non-static dynamic host configuration protocol (DHCP) signaling parameters.

### Claim 7 (depends on 6)

The WTRU of claim 6, wherein the non-static DHCP signaling parameters include a hostname.

### Claim 8

A method for use in a wireless transmit/receive unit (WTRU), the method comprising:
selecting a network from a plurality of networks;
adjusting a privacy profile wherein the privacy profile includes privacy and security settings for each layer of a protocol stack of the WTRU, wherein the privacy and security settings include at least one of (1) using anonymous dynamic host configuration protocol (DHCP) signaling parameters, the anonymous DHCP signaling parameters including a hostname, (2) using a non-static medium access control (MAC) address, and (3) using a non-static Internet protocol (IP) address; and
instructing each respective layer of the protocol stack of the WTRU with the privacy and security settings based on the adjusted privacy profile.

### Claim 9 (depends on 8)

The method of claim 8, wherein the privacy and security settings include using non-static dynamic host configuration protocol (DHCP) signaling parameters.