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57 results about "Collaborative group" patented technology

Methods and apparatus for scalable, distributed management of virtual private networks

A groupware management system for collaborative groups is disclosed that is scalable to support large, dynamic, multiple, and other virtual VPNs. The system may introduce a graph (or hierarchical) structure to the VPN, providing multiple master nodes controlling membership in subsets of the collaborative group. Use of multiple master nodes in a graph-structured (or hierarchical) network topology often relaxes the need for a single, centralized, globally consistent view of VPN group membership, and enables distribution of the management burden among multiple master nodes. Membership in the VPN may be changed dynamically by the second master node for the member nodes of the second subset, without requiring the first master node to dynamically update its group membership records to reflect the change and in many cases without even having to notify the first master node (and vice versa), for example. In further embodiments, the use of multiple master nodes may increase the reliability and efficiency of VPNs, such as by enabling load balancing of master node tasks. Fail-over mechanisms may also be used to transparently re-route management tasks to an alternate master node especially in the case of failure of the current master node serving a given member node.
Owner:NAVY SEC OF THE UNITED STATES +1

A cause and effect concurrent detection method for large-scale cooperative environment

The utility model belongs to the technical field of real-time collaborative group editing, in particular to a consequence concurrent checking method under the environment of extensive collaboration, which is characterized in comprising: a logic time stamp is defined and the logic time stamp belongs to the technical field of real-time collaborative group editing as the direct consequence ordering vector time stamp; the utility model discloses the method to solve the consequence concurrent checking problem during editing the real-time group based on the time stamp. The method comprises the following three steps: estimate whether a remote operation is consequently ready; find the historical operations concurrent with the current remote operation; and estimate the consequence concurrent relationship between two random historical operations. The utility model can be used for editing the real-time group with an arbitrary scale; the performance has no relation to the activity of the collaborative participator, the collaborative environment scale and the total number of the collaborative participators; so the utility model is particularly suitable for being used for editing the real-time group under the extensive collaborative environment with low concurrent level.
Owner:FUDAN UNIV

Collaborative downloading task scheduling method and system for mobile intelligent terminals

The invention provides a collaborative downloading task scheduling method for mobile intelligent terminals. The collaborative downloading task scheduling method includes that: the current downloading task quantity of all the mobile intelligent terminals is determined according to the historical downloading quantity of all the mobile intelligent terminals which perform downloading collaboratively so as to lead the total quantity of the current expected tasks of all the mobile intelligent terminals to tend to be balanced, wherein the total quantity of the current expected tasks of all the mobile intelligent terminals is the sum of the historical downloading quantity and the current task quantity of all the mobile intelligent terminals; (2) all the collaborative downloading mobile intelligent terminals download corresponding resources through a cellular network link according to the current downloading task quantity determined in the step (1) and share the downloaded resources through the local wireless network. The collaborative downloading task scheduling method and system can support the terminals to dynamically join a collaborative group and avoid too large difference of the cellular network flows consumed by all the terminals.
Owner:INST OF COMPUTING TECH CHINESE ACAD OF SCI
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