Page 35 - Trust in ICT 2017
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Trust in ICT                                                1


            5.2.6.3    Analysis

            Trusted data collection and aggregation
            Social  relationship  information:  This  trust  property  represents  whether  or  not  the  trustee  is  socially
            cooperative with the trustor. The social friendship relationship among device owners to characterize the
            cooperativeness is used.
            CoI information: This trust property represents whether or not the trustor and trustee are in the same social
            CoI (e.g. co-location, co-work, or parental object relationship).
            Ownership: This trust property represents whether or not the objects (smartphones) used by the device
            owner.
            5.2.7   Multi-hop device-to-device network path selection

            5.2.7.1    Description

            In the case of Figure 7, Alice wants to exchange information with another peer in multi-hop Device-to-Device D2D
            environment. Alice's smartphone requests the social information of Node 1~3 and its CoI value. Then, it calculates
            subjective trust values (Ta,n1, Ta,n2, Ta,n3) of other nodes in the view of Alice by using given information. If Ta,n1
            is the highest value, Alice's smartphone judges Node 1 has enough authorization to send information and select
            the path with Node 1. The social IoT trust also can be used in the path selection process for the reliable exchange
            of information. To complement the objective trust, the subjective trust is required in addition.

            5.2.7.2    Actor list
            User: A user who takes the ownership of the things (e.g. smartphone, laptop, etc.) and wants to exchange
            information with another peer via other users
            Device (Smartphone): A device which is an intermediate entity and is available to send its owner’s social
            relationship information and its CoI information to other devices.

            5.2.7.3    Analysis
            Trusted data collection and aggregation
            Social  relationship  information:  This  trust  property  represents  whether  or  not  the  trustee  is  socially
            cooperative with the trustor. The social friendship relationship among device owners to characterize the
            cooperativeness is used.
            CoI information: This trust property represents whether or not the trustor and trustee are in the same social
            CoI (e.g. co-location, co-work, or parental object relationship).
            Ownership: This trust property represents whether or not the objects (smartphones) used by the device
            owner.



























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