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Recently many communication systems based on three dimensional spaces have been proposed. In those systems, in order to support many users in the same space, the QoS control function based on the distance between avatars has mainly been applied. For this reason, computing and network resources in the communication systems are wasted. We suggest a new QOS control to take account of a user's interest and status information in addition to the distance between avatars. Using this method, unnecessary communication and resources can be reduced and more useful communication can be attained with higher priority in the large communication space.