Abstract: A key separation method and device are provided in the embodiments of the present invention. The key separation method includes: when a User Equipment hands over from a source node to a target node, or when the User Equipment moves from the source node to the target node in idle state, determining whether or not the source node is a Home NodeB; and if the source node is a Home NodeB, triggering an Authentication and Key Agreement procedure according to the operator's policy, to update Ciphering Key and Integrity Key. By performing Authentication and Key Agreement procedure, the method and device of the embodiments seperate key of the source node from the key of the target node.

Abstract: Embodiments of the present invention provide a method, an apparatus, and a system for performing time synchronization on PCIE (PCI Express, peripheral component interconnect express) devices. The method mainly includes: a PCIE device receiving, through a hardware interface, a time synchronization signal sent from a clock source device; parsing, by the PCIE device, the time synchronization signal to obtain clock information carried in the time synchronization signal, and using the clock information as a clock of the PCIE device. The PCIE devices are supported to access a synchronous network, and the PCIE devices are supported to be used as a global clock source.

Abstract: A method for implementing resources reservation in an access configuration mode in an NGN, including: when a subscriber accesses a network, an NAAF sending a resources request message to a resources mediation PDF; after receiving the resources request message, the resources mediation PDF making an admission decision according to network operator policy rules and availability of resources, send an admission installation command to a BGF, setting and keeping the corresponding admission decision parameters information in the BGF. Thus, the BGF performs packet forwarding operations as classifying, marking, shaping, and discarding on the user traffic entering the network according to the admission decision information so as to ensure the QoS class required by the user. Therefore, an applicable solution for implementing resources reservation in the access configuration mode in the NGN is provided.