摘要:
Exemplary embodiments provide for methods and systems that enable frame generation by fields taken from various queues. Protocol control can also or alternatively be distributed so that one or more header fields can be generated separately from other portions of a frame, e.g., the payload. The one or more header fields can be entered into queues from which they are taken to generate frames.
摘要:
Systems and methods according to these exemplary embodiments provide for methods and systems improving the protocol efficiency in passive optical networks. Additionally, methods and systems for calculating and transmitting an equalization delay change message are described.
摘要:
The invention relates to a method and circuit for aligning a serial bit stream with a parallel output. The method comprises latching Q bits from the serial bit stream into a register, locating a position P of a first bit of a start of frame delimiter (SFD) in the register and discarding P-1 bits from the serial bit stream, before the position of the first bit of the SFD, thereby aligning the serial bit stream with the parallel output. The circuit comprises a latch, a fault tolerant analysis logic (FTAL) for locating a position P of a first bit of a start of frame delimiter (SFD) in the register and a shift register for discarding P-1 bits from the serial bit stream, before the position of the first bit of the SFD, thereby aligning the serial bit stream with the parallel output.
摘要:
Methods and communication nodes for assigning unique identifiers to a plurality of nodes. A plurality of data values are maintained in memory, each being associated to one of the nodes. A bit mask value is obtained that, when applied to the plurality of data values, produces a plurality of unique identifiers. The bit mask value is made available to the nodes thereby assigning a unique identifier to each of the nodes.
摘要:
Systems and methods according to these exemplary embodiments provide for methods and systems that enable decoupling of medium access control (MAC) functions from other optical transceiver functions to, for example, promote scalability of passive optical networks (PONs). A MAC frame processing unit can communicate MAC frames to optical transceiver modules via an interconnect using an encapsulating frame according to another communications protocol, e.g., XAUI.
摘要:
Exemplary embodiments provide for methods and systems that enable frame generation by fields taken from various queues. Protocol control can also or alternatively be distributed so that one or more header fields can be generated separately from other portions of a frame, e.g., the payload. The one or more header fields can be entered into queues from which they are taken to generate frames.
摘要:
The invention relates to a method and circuit for aligning a serial bit stream with a parallel output. The method comprises latching Q bits from the serial bit stream into a register, locating a position P of a first bit of a start of frame delimiter (SFD) in the register and discarding P-1 bits from the serial bit stream, before the position of the first bit of the SFD, thereby aligning the serial bit stream with the parallel output. The circuit comprises a latch, a fault tolerant analysis logic (FTAL) for locating a position P of a first bit of a start of frame delimiter (SFD) in the register and a shift register for discarding P-1 bits from the serial bit stream, before the position of the first bit of the SFD, thereby aligning the serial bit stream with the parallel output.
摘要:
Systems and methods according to these exemplary embodiments provide for mechanisms and methods that allow for improving the efficiency of a passive optical network (PON). Upstream data transmission can occur by allowing an optical network unit (ONU) cycle to overlap more than one GPON transmission convergence (GTC) frame. Additionally, or alternatively, multiple different bandwidth maps can be transmitted per dynamic bandwidth allocation (DBA) cycle to inform ONUs of their respective, upstream bandwidth allocations.
摘要:
A function-specific network interface module is provided which includes a housing and a connection interface at opposing ends of the housing configured to connect to another function-specific network interface module in a cascaded manner. The function-specific network interface module further includes one or more circuit components operable to provide a dedicated network function so that a plurality of different network functions is provided when the function-specific network interface module is connected to the other function-specific network interface module via the connection interface.
摘要:
A crossbar may be coupled between a plurality of PHY devices configured to provide physical layer functions according to an Open Systems Interconnection, OSI, model and a plurality of MAC devices configured to provide data link layer functions according to the OSI model. First data couplings may be provided through the crossbar between the plurality of PHY devices and the plurality of MAC devices during a first time period. Second data couplings may be provided through the crossbar between the plurality of PHY devices and the plurality of MAC devices during a second time period, with the first and second data couplings being different. Related network elements, interfaces, and networks are also discussed.