摘要:
Transmission of electronic packets of varying priorities is provided for while accounting for transmission delays to minimize the transmission delay for higher priority electronic packets such as real-time services packets including voice or video. One manner of accounting for transmission delays involves applying rules regarding whether certain conditions are met to determine whether to pre-empt transmission of a lower priority packet with transmission of a higher priority packet to minimize delay of transmission of the higher priority packets while minimizing the transmission delay burden imposed on the lower priority packets. Another manner of accounting for transmission delays involves limiting the number of real-time service packet streams that pass through a given link in a transport network based on a determination of how many real-time service packet streams may be concurrently carried by the link while maintaining the transmission delay below a pre-determined amount to thereby minimize the transmission delays through the transport network.
摘要:
An efficient system and method for zooming the light from a flashlight is disclosed. Multiple refractive lenses are translated in unison to allow zooming of the light while reducing the size and weight of the required lenses. In another aspect, a meniscus lens is used to reduce the amount of light lost from a light-emitting diode (LED). One method includes providing a light source in a housing and translating a lens arrangement substantially along a light path of a light beam generated by the light source. The lens arrangement includes at least two refractive lenses separated by a gap, a size of the gap being maintained during translation of the lens arrangement.
摘要:
A video processing method and system for generating a foveated video display with sections having different resolutions uses a network channel for communicating video images having video sections of different resolutions, and includes a video transmission system for processing and transmitting the received video images over the network channel. The system assigns a larger portion of the network channel's bandwidth to a video section with higher resolution. Further, the system includes a video receiving system for receiving and seamlessly combining the first and second video sections of different resolutions to form an output video image on a display device, and a control unit for sending one or more video control parameters to the video transmission system to control capturing, transmitting and processing of the video images.
摘要:
These exemplary embodiments utilize Sessions Initiation Protocol (SIP) for admission control. The use of the SIP allows a SIP server itself to perform the admission control function. The use of RSVP linkages is reduced. The use of SIP for admission control allows an application to communicate, or “talk,” to a network and to request that resources within the network be reserved. Any communications device that uses sessions may utilize the SIP protocol for admission control. The SIP protocol may be used for unicast and multicast media sessions including video-on-demand and/or multicast video access control.
摘要:
Methods and systems provide an asymmetric Ethernet service. An Ethernet network transports Ethernet frames over an asymmetric connection to a point of service for a subscriber located remotely from the Ethernet network, and the Ethernet connection is asymmetric in that the effective data transfer rates for uploading and downloading of data over the Ethernet connection are different. The subscriber may then have Ethernet capable network devices such as routers and computers linked to the point of service so that data transfer between the network devices of the subscriber and the Ethernet network occurs over the asymmetric Ethernet connection. The Ethernet network allows for communication between the network devices of the subscriber and any desired Ethernet network resources, such as network resources located on the Ethernet network or resources of downstream networks such as the global Internet that are available through the Ethernet network.
摘要:
Methods and systems provide network access service for a subscriber by utilizing multiple asymmetric DSL modems per service point such that the available bandwidth is the aggregation of the multiple asymmetric DSL modems. One asymmetric DSL modem of a service point has a faster upload speed than download speed while another asymmetric DSL modem of the service point has a faster download speed than upload speed. The two asymmetric DSL modems are aggregated together at the service endpoint so that the service endpoint benefits from the upload and download bandwidth available from both asymmetric DSL modems. The two asymmetric DSL modems at one service point communicate with two asymmetric DSL modems aggregated at another service point to complete the exchange of data. The network access service using DSL connectivity may be made symmetric by providing one of the asymmetric DSL modems with an upload speed that is substantially the same as the download speed of the other asymmetric DSL modem, while the download speed of the one is substantially the same as the upload of the other.
摘要:
A Regional/Access Network (RAN) receives an application flow control request from a Network Service Provider (NSP) and/or an Application Service Provider (ASP). The application flow control request includes a request to determine bandwidth and/or QoS associated with a subscriber ID. The bandwidth and/or QoS associated with the subscriber ID is determined, and is sent from the RAN to the NSP and/or the ASP.
摘要:
Methods, systems and/or computer program products are provided for managing Quality of Service (QoS) and/or bandwidth allocation in a Regional/Access Network (RAN) having a broadband access server (BRAS) that facilitates differentiated end-to-end data transport between a Network Service Provider (NSP) and/or an Application Service Provider (ASP), and a Customer Premises Network (CPN) that includes a Routing Gateway (RG). In particular embodiments of the present invention, a modify QoS and/or bandwidth allocation message including updated QoS and/or bandwidth information from the NSP and/or ASP is received at the RAN. The BRAS is updated with the QoS and/or bandwidth information and the RG is also updated with the QoS and/or bandwidth information.
摘要:
Example methods disclosed herein to monitor wireless system operation include processing a plurality of session records describing characteristics of wireless sessions in a coverage area of a wireless system to determine a first time interval for a first wireless device to propagate from a first access point in the coverage area to a second access point in the coverage area, determining a coverage area traversal rate for the first wireless device based on the first time interval, the coverage area traversal rate corresponding to a rate at which the first wireless device is traversing the coverage area, and providing a wireless service advisory for the coverage area to a second wireless device based on the coverage area traversal rate for the first wireless device.
摘要:
Methods and systems respectively provide for receiving a wireless signal coverage map request from a wireless device. A map is generated in accordance with the request and provided to the wireless device. The map includes symbology keyed to wireless signal services within a particular geographic area. Such symbology can be indicative of recommended areas and travel routes having particular types of wireless signal coverage, regions of poor or non-existent wireless signal service, areas presently experiencing heavy wireless signal usage, and so on. In this way, a wireless device user can seek to access specific wireless services and/or avoid suspect trouble regions within a geographic area.