摘要:
There is provided a frame converter that writes input data included in an input frame to a buffer to accumulate the input data and outputs data read from the buffer as output data included in an output frame, the frame converter includes a setting unit configured to set a time interval from start of resizing of data rate of the input data to start of resizing of data rate of the output data when resizing of an accumulation amount in the buffer is performed in which data rates of the input data and the output data vary, and an adjustment unit configured to adjust to approximate the data rate of the output data to the data rate of the input data after the time interval has elapsed since the start of resizing of data rate of the input data.
摘要:
A line switching device includes multiple input ports to which signals are input and that include first input ports and second input ports different from the first input ports; multiple output ports that include given output ports; a branch unit that branches first signals input from the first input ports; and a switch that selectively outputs, among second signals input from the second input ports and branched signals branched from the first signals by the branch unit, signals that are to be switched to an output port among the given ports.
摘要:
A line switching device includes multiple input ports to which signals are input and that include first input ports and second input ports different from the first input ports; multiple output ports that include given output ports; a branch unit that branches first signals input from the first input ports; and a switch that selectively outputs, among second signals input from the second input ports and branched signals branched from the first signals by the branch unit, signals that are to be switched to an output port among the given ports.
摘要:
A semi-persistent scheduling method and apparatus based on statistically multiplexing in time and frequency resources, the method comprises steps of: allocating each initial transmission to use fixed time and frequency resources reserved for initial transmission by using a persistent grant, and allocating each retransmission to use time resource reserved for retransmission by using a persistent grant and dynamically allocating each retransmission to use frequency resource reserved for retransmission by using a dynamic grant or a default grant, wherein the initial transmission and the retransmission share the frequency resources within the same time slot.
摘要:
A persistent scheduling method and apparatus based on semi-grouping and statistically multiplexing, wherein a predetermined number of user equipments are grouped into a user equipment group to share allowable maximum transmission times of retransmission processes in different time slots each having a predetermined size, according to a predetermined set of criteria on communication conditions; and each user equipment within one user equipment group is allocated to use a corresponding time slot in a time division multiplexing mode.
摘要:
A new architecture capable of utilizing the existing twisted pair interface between customer premises equipment and an associated serving local switching office is used to provide a vast array of new services to customers. Using an intelligent services director (ISD) at the customer services equipment as an interface for the equipment to an existing twisted cable pair and a facilities management platform (FMP) at the serving local switching office as an interface to various networks and service opportunities, new services such as simultaneous, multiple calls (voice analog or digital), facsimile, Internet traffic and other data can be transmitted and received over the twisted cable pair by using digital subscriber loop transmission schemes. The new services include but are not limited to videophone, utility meter reading and monitoring, broadcasting and multicasting. The architecture provides for fault-tolerant, transparent interaction of components and services and supports a variety of standards for each level of the open systems interconnection layers and layers of TCP/IP. The FMP connects electronically or optically to the public switched telephone network, Internet backbone, a private Intranet as well as other possible network connections.
摘要:
A method and apparatus are provided for reducing current demand variations in large fanout trees. The fanout tree is split into at least 2 sub-groups, each preferably with substantially equal parasitic capacitance. Data is then scrambled according to a scrambling sequence function to provide scrambled data having a constant number of bits that are toggled with respect to time, such as when observed in pairs of sub-groups. Functionally, an apparatus according to an embodiment of the present invention includes 3 blocks: a scrambler, egress logic, and a de-scrambler. The egress logic is simply a block of storage that can reorder the bytes received from the scrambler. The de-scrambler de-scrambles the retransmitted data based on the scrambling sequence function. Embodiments of the present invention can be applied to any system where data must fanout from a single source to many destinations, such as switches.
摘要:
In a Synchronous Digital Hierarchy (SDH) based communications network comprising a plurality of Intermediate Systems (IS), the IS being divided between at least one IS—IS Area and at least one non-IS—IS Area, an IS—IS Area being an area within which a routeing protocol forming part of the Network Layer (Layer 3) of the Open Systems Interconnection including routeing (OSI), is provided for routeing messages between areas, a method is provided wherein static routes (Manual Adjacencies (MA) are created at IS within the IS—IS Area to point to routes to a group of one or more Network Equipments (NEs) within the non-IS—IS Area and where a failure occurs in a link to or within a group and messages from the IS—IS Area to the non-IS—IS Area are looped to the originating IS—IS Area, identification of the NEs from which messages have been looped are removed from the respective MAs allowing routeing of messages via alternative MAs.
摘要:
A new architecture capable of utilizing the existing twisted pair interface between customer premises equipment and an associated serving local switching office is used to provide a vast array of new services to customers. Using an intelligent services director (ISD) at the customer services equipment as an interface for the equipment to an existing twisted cable pair and a facilities management platform (FMP) at the serving local switching office as an interface to various networks and service opportunities, new services such as simultaneous, multiple calls (voice analog or digital), facsimile, Internet traffic and other data can be transmitted and received over the twisted cable pair by using digital subscriber loop transmission schemes. The new services include but are not limited to videophone, utility meter reading and monitoring, broadcasting and multicasting. The architecture provides for fault-tolerant, transparent interaction of components and services and supports a variety of standards for each level of the open systems interconnection layers and layers of TCP/IP. The FMP connects electronically or optically to the public switched telephone network, Internet backbone, a private Intranet as well as other possible network connections.
摘要:
A method and device are used for realizing primary-backup protective of low order cross apparatus of SDH low order virtual container deploy based on switching network. The method includes distributing multicast ID as the destination address of code flow of high order virtual container, wherein the high order virtual container includes SDH low order virtual container to be deployed and the multicast ID is directed respectively to the port connected to the two or more than two low order cross apparatuses in switching network; closing the connected channel between the switching network and said backup low order cross apparatus; and opening the connected channel between the switching network and one of the backup low order cross apparatus when the primary low order cross apparatus fails. The method can efficiently perform primary-backup rearrangement when SDH low order virtual container is deployed based on switching network.