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140 results about "User protection" patented technology

Fairness-based power and channel joint allocation method for cognitive radio system

InactiveCN101626604AHigh QoS support levelImprove fairnessPower managementEnergy efficient ICTQuality of serviceMathematical definition
The invention provides a fairness-based power and channel joint allocation method for a cognitive radio system, belongs to the technical field of wireless communication, and in particular relates to power and channel joint allocation used in the cognitive radio system. The invention relates to the power and channel joint allocation method which can meet the requirements of unauthorized users on quality of service (QoS), ensure the fairness and protect the authorized users at the same time. According to different QoS requirements of the unauthorized users, a mathematical definition on the fairness is given. Simultaneously, in order to reduce arithmetic cost and shorten the allocation period, the method divides the whole allocation process into two stages; the first stage is called as the crude allocation, at the stage, the protection of the authorized users is taken as premises, and the maximum resource which can be utilized by each non-authorized user is obtained according to the QoS requirements of the non-authorized users and the fairness; and the second stage is called as the fine allocation, at the stage, a plurality of non-authorized users independently complete the tasks, which can be serially and simultaneously completed by the authorized users, so that the complexity is reduced, the quick power and frequency spectrum allocation can be conveniently realized so as to adapt to the quick time varying characteristics of available frequency spectrum resources in the cognitive radio system, and all authorized users can independently determine the final utilizable resources.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA

Multi-failure protection method for multiple service levels in WDM network

InactiveCN101262298AAddressing the need for protectionMultiple fault protection satisfiesWavelength-division multiplex systemsFault recovery arrangementsGrade of serviceResource utilization
The invention relates to a protection method with a plurality of service grades for multiple faults in WDM networks, pertaining to the technical field of optical network communication. The method comprises the steps as follows: step one: connections of different grades are established for service requests arrived, that is, working accesses and accesses for protection are established; step two: for service connections conveying data in the networks, when failed links occur, the service grade is judged, different protection methods are executed to services of different grades, and enhanced recovery is executed to the service of the highest grade. The method of the invention meets the requirements for different protections raised by users in case of multilink faults in the WDM optical networks. EDSP takes into consideration of an enhanced recovery mechanism for load balancing, protection of resource sharing and resource recycling, so as to improve resource utilization rate and reduce blocking probability; effective multiple faults protection is also provided, and the requirement for services of diamond grade (highly reliable protection for multiple faults (three faults and more)), platinum grade (single fault being 100 percent protected) and economic grade (no protection) are met.
Owner:NORTHEASTERN UNIV
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