摘要:
A mobile wireless terminal, upon transitioning from a wireless telephony network to a wireless Local Area Network (LAN), seeks identification by sending the same identity information used for identification in the wireless telephony network. Upon receipt of the identity information, a wireless LAN Access Server in the wireless telephony network identifies a Serving General Packet Radio Service Serving Node (SGSN) that had last served the wireless terminal in the wireless telephony network prior to transition. The wireless LAN Access Server forwards the identity information to the SGSN, which, in turn, provides an identification response for validating the terminal.
摘要:
A method and a system for allowing a user device that has already been authenticated by a first communications network to gain access to a second communications network without undergoing authentication by the second communications network. The first communications network and the second communications network have a pre-established trust relationship there between. A packet is received from the user device that includes a user device public key, by the second network via the first network. A session key is sent from the second network to the user device, via the first network, when a source Internet Protocol (IP) address associated with the packet falls into a range allocated to the first network. The session key is encrypted with the user device public key. The user device decrypts the session key using a private key and uses the session key thereafter to access the second network. Further a mapping is generated to correlate the identity of the user device with the session key such that usage data relate to user device is generated by the second communications network and transmitted to the first communications network, which generates accounting information indicative of user device access of the second communications network.
摘要:
Disclosed is a system and method for providing a transparent proxy for Internet communications. A filtering and redirection module receives IP requests from at least one client, reads and saves the destination of the IP requests, and rewrites the destination of the IP request to the destination of a proxy module. Upon being unable to read, or otherwise determine, a destination for an IP request, the proxy module accesses destination information about the IP request from the filtering and redirection module. The proxy module then transmits the IP request to a web server at the original destination.
摘要:
A method and system for caching data such as audio, video and/or other data uses information including future access request information for improved caching performance. According to an exemplary embodiment, a cache system includes a cache operative to cache a plurality of data items. A processor is operative to enable at least one of the data items in the cache to be replaced using future access request information for the at least one data item.
摘要:
A method for mapping from an MPEG-2 transport stream to an IP-based RTP/UDP/IP stack for broadcasting service in a WLAN. All the mapping functions may be performed in a receiver transcoder (FIG. 2). Mobile devices such as laptop computers, cell phones and PDAs have limited battery power, CPU processing and memory resources. To reduce CPU processing power and consumption battery power in these devices certain data processing functions are achieved in the communicating systems, such as the de-multiplexer function that typically prepares an MPEG-2 for retransmission at the local level. When a transcoder, capable of de-multiplexing and MPEG-2 transport stream receives a program it de-multiplexes the stream based on PIDs assigned to each transport packet. This de-multiplexing function extracts several components from a transport stream: video and audio PES/ES associated with programs and PSI (PAT and PMTs).
摘要:
A technique for scheduling distribution of a content file within a content delivery network and a content delivery network adapted to perform the same are disclosed. The technique comprise scheduling distribution of the content file based on delivery location, service time of content requests, and cache server hierarchy. Preferably, a multicasting tree for delivering each content file is dynamically established in the content delivery network based on location and service time considerations.
摘要:
There is provided a system for resolving a proxy server name for a web browser request issued by a user device in a network. The user device has a browser configured with the proxy server name. The system includes a Domain Name System (DNS) server and a web server. The DNS server generates a private Internet Protocol (IP) address associated with the user device in response to a non-resolvable DNS query from the user device that specifies the proxy server name, and creates a one-to-one mapping that relates the private IP address to the proxy server name. The web server receives a web browser request from the user device. The web browser request has been redirected to the web server and has an original destination IP address equal to the private IP address. The web server identifies the proxy server name from the private IP address using the one-to-one mapping.
摘要:
A remote site downloading system is disclosed in which a local computer establishes a session with a content server, and a content file and geographic destination drive are selected. The local computer is typically on a first access network and the user wishes to have the file downloaded to a geographic drive, i.e., a remote site computer whose location and other properties are mapped in a mapping file on the local computer. The geographic drive is usually on a different access network in a dynamic location such as a hotspot or a fixed location such as broadband cable or DSL. The local computer is specially programmed to allow selection of the geographic target drive, pack information comprising cookies and a URL, and sends it to the remote geographic drive computer, where it may act as a proxy to cause downloading from the content server to the geographic drive on the remote site computer.
摘要:
Disclosed is a method of dynamical frequency selecting for a basic service set established by a main wireless device in a wireless local area network. The method comprises steps of a determining step for determining whether a new channel to be used by said BSS is needed; a scanning step conducted by said main wireless device for scanning all channels based on a random priority to detect whether other adjacent BSSs are existing and performing DFS concurrently; a measuring step conducted by said main wireless device based on the scanning result for exisitn operational BSSs for measuring channel quality of a plurality of channels; selecting one channel based on the channel quality parameters. The present invention advantageously provides a dynamic frequency selection method without any modification for the IEEE 802.11 standard, or any requirement for the implementation of the wireless stations.
摘要:
The Quality of Service (QoS) level/service level within a wired network associated with a wireless Local Area Network (LAN) is controlled by assigning to each incoming information frame a Virtual Local Area Network (VLAN) number in accordance with the QoS level/service level determined for that frame. The frame is then routed in the network in accordance with the VLAN number to assure that the path(s) carrying the frame have the requisite characteristics, such as bandwidth, to satisfy the determined QoS level/service level.