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Enhanced security for direct link communications

A link and security technology, applied in the direction of security devices, wireless communication, security communication devices, etc.

Inactive Publication Date: 2011-11-23
INTERDIGITAL PATENT HLDG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current methods do not allow the WTRU to choose how the through link is protected

Method used

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  • Enhanced security for direct link communications
  • Enhanced security for direct link communications
  • Enhanced security for direct link communications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0056] CLAIMS 1. A method for secure through-link communication, the method comprising communicating a first nonce to at least one wireless transmit / receive unit (WTRU).

[0057] 2. The method of embodiment 1 further comprising receiving a nonce associated with at least one WTRU.

[0058] 3. The method as in any one of the preceding embodiments, further comprising generating a public nonce, wherein the public nonce is a secure combination of a first nonce and an associated nonce.

[0059] 4. The method as in any one of the preceding embodiments, further comprising transmitting a Group Identification Information Element (GIIE) to the authentication server, wherein the GIIE includes at least a public nonce.

[0060] 5. The method as in any preceding embodiment, further comprising receiving a Group Direct Link Master Key (GDLMK) from the authentication server, wherein the GDLMK uses GIIE to match the WTRU as a key agreement packet part.

[0061] 6. The method according to any o...

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Abstract

Provided is a method for secure direct link communications between multiple wireless transmit / receive units (WTRUs). The WTRUs exchange random numbers that are used for generating a common random number. A group identification information element (GIIE) is generated from at least the common random number and is forwarded to an authentication server. The authentication server generates a group direct link master key (GDLMK) from the GIIE to match WTRUs as part of a key agreement group. Group key encryption key (GKEK) and a group key confirmation key (GKCK) are also generated based on the common random number and are used to encrypt and sign the GDLMK so that base stations do not have access to the GDLMK. Also disclosed is a method for selecting a key management suite (KMS) to generate temporal keys. A KMS index (KMSI) may be set according to a selected KMS, transmitted to another WTRU and used to establish a direct link.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 138,320, filed December 17, 2008, which is incorporated herein by reference. technical field [0003] This application relates to wireless communications. Background technique [0004] In conventional infrastructure-based wireless systems, wireless transmit / receive units (WTRUs) that may wish to communicate with each other must do so through a base station, even though they could theoretically communicate directly with each other. The result of this approach is an inefficient use of OTA resources because data that would have been sent once (from source to destination) over the wireless medium is sent twice (from source to base station, then from base station to destination). Network resources cannot be effectively utilized, including, for example, base station bandwidth, power, bandwidth of network backhaul links, and other related resources. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/04H04L29/06
CPCH04L2209/80H04W12/08H04W76/023H04L63/162H04L9/321H04W12/04H04L9/0822H04L9/0841H04W76/14H04W12/0433H04W12/0431H04W12/041H04L9/083H04B7/24H04W92/18
Inventor A·列兹尼克Y·C·沙阿
Owner INTERDIGITAL PATENT HLDG INC