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287 results about "Collaborative network" patented technology

A collaborative network is a network consisting of a variety of entities (e.g. organizations and people) that are largely autonomous, geographically distributed, and heterogeneous in terms of their operating environment, culture, social capital and goals, but that collaborate to better achieve common or compatible goals, and whose interactions are supported by computer networks. The discipline of collaborative networks focuses on the structure, behavior, and evolving dynamics of networks of autonomous entities that collaborate to better achieve common or compatible goals. There are several manifestations of collaborative networks, e.g....

Relay selection method based on load balancing in cooperation relay network

The invention discloses a relay selection method based on load balancing in a cooperation relay network. The relay selection method based on load balancing adopts distributed two-stage relay selection, wherein mobile users select service relay nodes on the basis of a constructed relay selection function; and the relay nodes are used for scheduling the optimal mobile user reversely and realizing the relay section based on load balancing according to matching selection, thereby achieving the compromise between throughput and user fairness. A weight value omega k and a resource scheduling factor alpha m can be selected in real time in the selection process. According to the invention, a computational process is simplified, and the relay nodes can be fairly selected by the users in a cell. According to the method, channel situations on a physical layer and user situations on an MAC (Medium Access Control) layer are taken into overall consideration, the load in each cell is distributed reasonably, so that the transfer efficiency is improved, the system throughput is strengthened, and the overall performance of the network is improved. The balance between resources and the load can be realized among a plurality of nodes through the relay selection to perform performance optimization on the wireless cooperation network, and thus limited wireless resources can be efficiently utilized. Therefore, the relay selection method is practical.
Owner:XIAN UNIV OF POSTS & TELECOMM

Method for selecting safe relay for multiple targets in mobile collaborative network

The invention relates to the technical field of mobile communications and provides a method for selecting a safe relay for multiple targets in a mobile collaborative network. In the method provided by the invention, a channel fading threshold as well as and the various states and the state transition probability of candidate relay nodes are determined through periodically transmitting a training sequence and feedback information; when the fading speed of some channel is greater than the threshold, dynamic relay selection is carried out, or else, semi-static relay selection is carried out; and during the process of relay selection, the optimal safe relay is selected to collaborate data transmission according to the total compensation determined by a plurality of target values, such as system safety capacity, and the like. With the adoption of the method provided by the invention, the characteristics of wireless channels in the mobile collaborative network can be accurately and timely described, and the dynamic selection of the optimal safe relay for the multiple targets is realized through lower complexity, so that the method has strong flexibility and expandability; and the transmission efficiency is further increased through carrying out different relay selections according to channel states.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Method for selecting optimal distributed type interference source in mobile collaborative network

The invention relates to the technical field of mobile communications and provides a method for selecting an optimal distributed type interference source in a mobile collaborative network. In the method, the possible states and the state transition probability of candidate collaborative nodes are obtained through periodically transmitting a training sequence and feedback information; whether a channel source node can be in direct communication with a destination node is judged, if the direct communication is available, the selection of the optimal interference node is carried out, or else, the selection of an optimal relay-interference pair is carried out; and a corresponding priority symbol value of each possible state of the collaborative nodes is calculated, and a suitable node is selected to collaborate data transmission. With the adoption of the method provided by the invention, the optimal interference source can be selected according the specific states of a channel, so as to respond to the interception of illegal nodes in the mobile collaborative network, the power consumption and the transmission error rate of the collaborative nodes are sufficiently considered at the same time that the secure communication is guaranteed, and the quality of communication is ensured.
Owner:BEIJING UNIV OF POSTS & TELECOMM
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