Tuesday 9 October 2007

Introduction to trust in CRN

quoted from BWN lab


CRN: Cognitive Radio Network
Cognitive Radio:
1. It knows the current degree of needs and future likelihood of needs of its users.
2. Learns and recognizes usage patterns from users.

Cognitive Radio Capability
1. Reconfigurable
2. Cognitive

CRN
1. Primary system (including licensed band and unlicensed band)
2. Cognitive radio system

The Definition of Trust
1. Trust of a party X to a party Y for a specific services S is the measurable belief of X in that Y behaves dependably for a specified period.
2. Trust can be seen as a directional relationship between trustor and trustee.

Trust Categorization
1. Access trust
2. Data trust
3. Operations trust
4. Communication trust

Some properties of Trust
1. Transitivity
2. Asymmetry
3. Dynamic Changing
4. Multi-level

CRN will consist of multiple service providers, access network operators, and different kinds of terminals.

Thursday 4 October 2007

Firefox and Jajah

The JAJAH extension for Firefox integrates call functionality into your browser. Phone numbers on web pages are automatically detected and highlighted. When clicked, JAJAH initiates a phone call from your phone...
The JAJAH extension for Firefox integrates call functionality into your browser. Phone numbers on web pages are automatically detected and highlighted. When clicked, JAJAH initiates a phone call from your phone
- landline or mobile - to the desired destination. Alternatively, phone numbers can be entered directly in the toolbar, thus effectively combining phone communication with everyday web browsing.

Regardless of your phone company or plan, JAJAH allows long distance and international calls for less than 2 cents a minute - no monthly fee, no registration fee, no need for prepayment. Trial users receive 5 free minutes to experience the outstanding quality and simplicity of the JAJAH service.

For more info please visit www.jajah.com