Group cooperation system and method based on virtual terminal in mobile environment

Abstract

The invention discloses a group cooperation system and method based on a virtual terminal in a mobile environment. The group cooperation system with individuals as the center and group moving models as the core is built based on the virtual terminal. When Qos demands of a user for a service are not high, a moving prediction task is executed, namely, all kinds of state information of participated terminals are autonomously looked up through the participated terminals by predicting moving conditions of the center node user, and a plurality of terminals capable of providing the optimum service experience for the user are selected in advance through a controller according to factors like service requirements and user preference to constitute dynamically-changed virtual terminal groups; when Qos demands of the user for the service are high, a moving guide task is executed, namely, state information of all terminals in regions close to current spots is collected and is used in cooperation with the target direction of the user to judge the terminal group of which region can best meet service requirements, and the terminal group serves as the moving direction of the user in the next step to ensure that the user can enjoy the optimum service experience in the moving process all the time.

Description

technical field

[0001] The invention belongs to the communication field, relates to a group cooperation system, in particular to a group cooperation system and method based on a virtual terminal in a mobile environment. Background technique

[0002] The existing research on group mobility models at home and abroad is basically derived from Ad hoc networks. The main group mobility models are as follows:

[0003] 1) Reference Velocity Group Movement Model (RPGM)

[0004] In this model, each group has a logical center, and the movement attribute of the logical center defines the movement mode of the group nodes, including position, speed, direction and acceleration; each node in the group is assigned a reference point, the position of the reference point changes with the movement of the group. Nodes are freely distributed around the reference point and move independently within the range of the reference point. The reference point provides configuration parameters for the nod...

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