摘要:
Provided is a method for classifying packets in a cable modem termination system (CMTS) supporting a channel bonding mode. The method includes the steps of: extracting a destination Media Access Control (MAC) address of a received data packet; acquiring a MAC address of a cable modem receiving the data packet, and memory address information of a cable modem Classifier Identifier (CLID) corresponding to the MAC address of the cable modem, from a first classification table corresponding to the destination address; extracting the CLID information present in the memory address; extracting a classifier pattern corresponding to the extracted cable modem CLID information; bonding the MAC address of the cable modem and the classifier pattern to generate a result pattern; extracting a memory address including downstream service flow information from a second classification table corresponding to the result pattern; extracting the downstream service flow information corresponding to the memory address; and generating an output packet corresponding to the downstream service flow information and the data packet.
摘要:
A method and apparatus of classifying downstream service flows for a cable modem is provided. A method of classifying downstream service flows, the method including: classifying a service flow based on a Quality of Service (QoS) using a destination address of an inputted packet; composing an internal header including corresponding service flow information based on the classifying of the service flow; and adding the internal header to the inputted packet.
摘要:
The processing of a multicast service flow for a headend cable modem by classifying an inputted multicast packet by a session composing an internal header including multicast service flow information allocated to the classified session and then outputting an internal multicast packet including the internal header.
摘要:
A method and apparatus of processing a multicast service flow for a headend cable modem is provided.The method of processing the multicast service flow includes: classifying an inputted multicast packet by a session; composing an internal header including multicast service flow information allocated to the classified session; and outputting an internal multicast packet including the internal header.
摘要:
Provided is a method by which a cable modem reports a downstream packet resequencing status to a cable modem termination system, and more particularly, a method of effectively reporting detailed information on a packet resequencing status by further defining a packet resequencing-related event and event-related information in a message reporting the packet resequencing status. The method by which a cable modem reports a resequencing status of the resequenced packets includes the steps of: when a packet resequencing-related event occurs, generating a resequencing status message (CM-STATUS) including packet sequence numbers of packets causing the event; transmitting a band allocation request message for requesting a cable modem termination system to allocate an upstream band for transmission of the resequencing status message; and transmitting the resequencing status message to the cable modem termination system over the upstream band allocated by the band allocation request message. More detailed resequencing status information, such as the remaining capacity of the receive buffer and the resequenced packet map, for more packet resequencing-related events compared to the conventional downstream packet resequencing status reporting method, is transmitted to the CMTS, such that the CMTS copes more flexibly with situations that may occur upon packet resequencing.
摘要:
Disclosed is a downloadable conditional access system (DCAS) including a key request unit to transmit a key request message to an authentication server, an authentication request unit to request authentication from the authentication server based on a key response message received from the authentication server in response to the key request message, and a session establishment unit to establish a session with the authentication server, based on an authentication response message received in response to the authentication request.
摘要:
Provided is a method and apparatus for controlling an event of a cable modem and reporting a status of the cable modem, the method including: determining whether to periodically allocate a transmission bandwidth of a CM-STATUS message with respect to an event occurrence of the cable modem; setting an event control encoding that includes information regarding whether to periodically allocate the transmission bandwidth; and generating a MAC Domain Descriptor (MDD) message containing the event control encoding to transmit the generated MDD message.
摘要:
A packet transmission device of a physical layer receives a plurality of packets from a media access control layer that is an upper layer of the physical layer, and detects a packet including a sync message from the packets. The packet transmission device receives first time information for synchronization from the media access control layer, inserts first time information into the sync message, and transmits packets at a predetermined data rate.
摘要:
A method of effectively setting and changing a Receive Channel Set (RCS) of a cable modem (CM) is provided.The method includes: receiving, by a Cable Modem Termination System (CMTS), a Receive Channel Profile (RCP) with respect to a downstream physical layer of a CM; composing, by the CMTS, a plurality of channel configuration information required for setting the RCS of the CM with reference to the RCP; encoding, by the CMTS, the plurality of channel configuration information, and transmitting the encoded plurality of channel configuration information to the CM; transmitting, by the CM, an RCP with respect to a downstream physical layer to a CMTS; receiving, by the CM, a plurality of channel configuration information being composed with reference to the RCP and being required for setting the RCS; and setting, by the CM, the RCS using the plurality of channel configuration information.
摘要:
Disclosed are a system and method for monitoring a headend cable modem on a digital cable network, which may monitor a headend cable modem using a configuration management message capable of controlling the headend cable modem. The system includes a message header unit for monitoring the headend cable modem by exchanging a configuration management message including configuration information for controlling channel boding of the headend cable modem and state information of the configuration information with the headend cable modem; and a message varying unit including the configuration information corresponding to the message type information and the state information.