Abstract: This application discloses a method for automatically activating an NFC application and a terminal, and relates to the terminal field. When a terminal has a plurality of SEs, an NFC application accessed by a transaction instruction is automatically activated. The terminal may include an NFC controller and at least two SEs, and each of the at least two SEs carries at least one NFC application. A specific solution is as follows: The NFC controller receives a transaction instruction, determines a target SE from the at least two SEs according to the transaction instruction, and sends the transaction instruction to the target SE; the target SE receives the transaction instruction, and determines, according to the transaction instruction, a target NFC application from an NFC application carried in the target SE; and the target SE runs the target NFC application, and executes the transaction instruction.

Abstract: A method for distributing file data includes: obtaining a first request message of a first client for downloading a first file, and determining an autonomous system (AS) where the first client is located; searching the AS for edge servers that support peer to peer (ES-Ps), and returning the address of at least one ES-P storing the first file to the first client; and sending the first file stored in the ES-P to the first client according to the client information returned by the ES-P. Related devices and systems are also provided. The present invention may speed up the file data distribution, reduce the restriction of the file data distribution due to fixed bandwidth of the ES, and enable P2P data streams to be converged into an AS, thus reducing the impact on backbone networks.

Abstract: A method for constructing a network topology is applied in a streaming delivery system. The streaming delivery system includes: a center server (CS-P), an edge server (ES-P), a request scheduling server (RRS-P), and a client. The disclosed embodiments utilizes the upload capabilities of the client to transmit a part of streaming data, thus consuming fewer center server resources. By constructing the network topology, the disclosed embodiments enable the client to obtain a part of streaming data from other clients, reduces the load capability requirements for the server, and ensures that a streaming delivery network may provide streaming live services with higher bandwidths and better quality.

Abstract: The present invention relates to a P2P network system. The P2P network system includes: multiple local overlay networks, each comprising multiple proxy service peers; a global overlay network composed of the proxy service peers of all local overlay networks. The proxy service peer is adapted to respond to the request of the requesting peer, query the local overlay network or global overlay network, and return the address information of the requested peer or the requested proxy service peer to the requesting peer. The present invention also relates to a proxy service peer applicable to the foregoing network system, and a method of peer interworking between P2P overlay networks based on the foregoing system. The present invention relieves the load of the proxy service peer, avoids blindness of the requesting peer in selecting the proxy service peer, and achieves load balance between proxy service peers.

Abstract: The present invention relates to a P2P network system. The P2P network system includes: multiple local overlay networks, each comprising multiple proxy service peers; a global overlay network composed of the proxy service peers of all local overlay networks. The proxy service peer is adapted to respond to the request of the requesting peer, query the local overlay network or global overlay network, and return the address information of the requested peer or the requested proxy service peer to the requesting peer. The present invention also relates to a proxy service peer applicable to the foregoing network system, and a method of peer interworking between P2P overlay networks based on the foregoing system. The present invention relieves the load of the proxy service peer, avoids blindness of the requesting peer in selecting the proxy service peer, and achieves load balance between proxy service peers.

Abstract: A method for constructing a network topology is applied in a streaming delivery system. The streaming delivery system includes: a center server (CS-P), an edge server (ES-P), a request scheduling server (RRS-P), and a client. The disclosed embodiments utilizes the upload capabilities of the client to transmit a part of streaming data, thus consuming fewer center server resources. By constructing the network topology, the disclosed embodiments enable the client to obtain a part of streaming data from other clients, reduces the load capability requirements for the server, and ensures that a streaming delivery network may provide streaming live services with higher bandwidths and better quality.

Abstract: A method for distributing file data includes: obtaining a first request message of a first client for downloading a first file, and determining an autonomous system (AS) where the first client is located; searching the AS for edge servers that support peer to peer (ES-Ps), and returning the address of at least one ES-P storing the first file to the first client; and sending the first file stored in the ES-P to the first client according to the client information returned by the ES-P. Related devices and systems are also provided. The present invention may speed up the file data distribution, reduce the restriction of the file data distribution due to fixed bandwidth of the ES, and enable P2P data streams to be converged into an AS, thus reducing the impact on backbone networks.

Abstract: A media delivery system includes a media manager (MM) a central server that supports peer to peer (P2P) technology (CS-P), a request routing system that supports P2P technology (RRS-P), and an edge server that supports P2P technology (ES-P) and multiple P2P clients. A method for playing streaming media based on the above media delivery system includes: the MM publishes a live channel notification to the CS-P, RRS-P, and ES-P; the CS-P obtains streaming data packets from a live source and parses and slices the packets to generate slice data; the ES-P obtains the slice data from the CS-P and/or other ES-Ps that are able to provide slice data and caches the slice data; and the P2P client obtains the slice data from the ES-P or other P2P clients and delivers the data, or the data is played by a local player after an assembly operation by the P2P client. With the P2P technology, the present invention improves the prior media delivery network and realizes the playing of streaming media to a large number of clients.