摘要:
Disclosed is a method, apparatus and computer product for ensuring QoS (Quality of Service) of isochronous data in a Residential Ethernet system including a legacy Ethernet device and a first Residential Ethernet switch, in which the first Residential Ethernet switch transmits data packets to the legacy Ethernet device, the method comprising the steps of inserting, by the first Residential Ethernet switch, virtual local area network (VLAN) tags into the data packets in order to allocate priorities to the data packets, and establishing priorities of the VLAN tags such that a highest priority is allocated to isochronous packets from among the data packets.
摘要:
Disclosed is a method for forming a super frame used for transmitting isochronous data and asynchronous data in a residential Ethernet system. The method includes the steps of receiving the isochronous data and the asynchronous data to be transmitted through the residential Ethernet system, forming an isochronous frame using the received isochronous data, forming a cycle start frame used for reporting start of the super frame, and inserting the asynchronous data into an area of an asynchronous frame by employing a remaining area as the area of the asynchronous frame, the remaining area being obtained by excluding an isochronous frame area, which includes the cycle start frame and the isochronous frame, from an area having the predetermined size.
摘要:
A method for generating a super frame of a predetermined size in a a residential Ethernet system for separately transmitting isochronous data and asynchronous data includes the steps of: receiving by the residential Ethernet system the isochronous data and the asynchronous data to be transmitted through the residential Ethernet system; dividing the received isochronous data into a plurality of sub-frames according to synchronous links; inserting an Ethernet header into each of the sub-frames, thereby generating a plurality of isochronous packets; and employing a remaining area, which is obtained by excepting an area of the isochronous packets from the predetermined size, as an asynchronous packet area, and inserting asynchronous packets including the asynchronous data into the asynchronous packet area.
摘要:
A residential Ethernet node device for transmitting synchronous data uses a counter in a residential Ethernet system. The device includes a parser for receiving residential Ethernet data from external other node devices, and parsing the received Ethernet data as synchronous data and asynchronous data. An asynchronous switch switches and transmits the parsed asynchronous data. A synchronous switch switches and transmits the parsed synchronous data. A multiplexer is connected with the asynchronous switch and the synchronous switch, and multiplexes the asynchronous and synchronous data. A synchronous data band assignment unit for, by the count of a counter, indicating synchronous data bandwidth information determined from a synchronous data bandwidth reservation process, and transmitting the indicated bandwidth information to the multiplexer, thereby determining a multiplex position for synchronous data transmission.
摘要:
Disclosed is a method for approval of a time-dependent stream input to a predetermined node in a residential Ethernet system, the method including the steps of receiving a transmission request of the time-dependent stream by the predetermined node, extracting a pacing parameter and a cycle number, which are a delay value of the predetermined node and a transmission period of the time-dependent stream, respectively, from the transmission-requested time-dependent stream, calculating a transmission bandwidth of an entire time-dependent stream to be transmitted through the predetermined node, by taking into consideration the pacing parameter and the cycle number, determining if the transmission bandwidth, which includes the transmission-requested time-dependent stream, satisfies a total transmission bandwidth based on the pacing parameter and the cycle number and determining whether to approve the transmission-requested time-dependent stream.
摘要:
A Residential Ethernet switching apparatus for performing time slot switching includes an input unit for receiving frames as input, and a parser for parsing the received frames into asynchronous Ethernet frames (AsyncE frames) and Residential Ethernet frames (ResE frames). An AsyncE switching processor performs a switching operation for an AsyncE frame parsed by the parser. A ResE switching processor performs, according to positions of time slots included in a ResE frame parsed, a virtual MAC (VMAC) processing for the ResE frame The ResE switching processor also performs a switching operation based on a result of the VMAC processing. A multiplexer multiplexes the AsyncE frame switched by the AsyncE switching processor, and the ResE frame switched by the ResE switching processor, for output.
摘要:
Disclosed is a method, apparatus and computer-readable medium for selecting a root bridge when a spanning tree is configured in an Ethernet network including a plurality of legacy switches and a plurality of synchronous switches. The method comprises the steps of providing in advance identification information in a configuration BPDU message of the synchronous switch, the identification information representing that a corresponding switch is an AV switch, broadcasting configuration BPDU messages by the legacy switches and the synchronous switches; and receiving configuration BPDU messages by the synchronous switch from other switches, confirming bridge priorities according to the synchronous switches through the received configuration BPDU message and the identification information to select a synchronous root bridge, receiving configuration BPDU messages by the legacy switch from other switches, and confirming bridge priorities through the received configuration BPDU messages to select a legacy root bridge.
摘要:
A method for soft switch call control and a soft switch device therefore are provided. The soft switch device acquires an initial address message (IAM) at a calling side, analyzes information of the calling party and the called party based on the acquired initial address message (IAM), and informs the media gateways to create a context and to add TDM semi-permanent physical terminations of time slots corresponding to the calling party and the called party into the context when the calling party and the called party are controlled by the same media gateway. Thus, it can implement a local loop of TDM voice, reduce IP loop of RTP streams and efficiently reduces network resources such as steps for digital signal processing, echo elimination and etc.
摘要:
A method for soft switch call control and a soft switch device therefore are provided. The soft switch device acquires an initial address message (IAM) at a calling side, analyzes information of the calling party and the called party based on the acquired initial address message (IAM), and informs the media gateways to create a context and to add TDM semi-permanent physical terminations of time slots corresponding to the calling party and the called party into the context when the calling party and the called party are controlled by the same media gateway. Thus, it can implement a local loop of TDM voice, reduce IP loop of RTP streams and efficiently reduces network resources such as steps for digital signal processing, echo elimination and etc.