Granted Patent B1

US 8,891,544 · App. 13/335,735 · Granted Nov 18, 2014

Abstract

Claims (20)

1. A Broadband Cable Network (BCN) modem having a transmitter capable of transmitting packets to a plurality of nodes in a broadband cable network, the transmitter comprising:

a MAC subsystem capable of providing packets for transmission within the broadband cable network;

a Modem subsystem in signal communication with the MAC subsystem, the Modem subsystem capable of receiving the packets from the MAC subsystem and appending information to the packets; and

a RF subsystem in signal communication with the Modem subsystem capable of receiving the packets from the Modem subsystem and upconverting the packets received from the Modem subsystem;

wherein at least one of the packets is a beacon packet that has a channel number field, change field, sequence number field, network coordinator ID field, next beacon index field, admission frame length field, admission window, asynchronous MAP length field and a beacon Cyclic Redundancy Checking (CRC) field.

2. A Broadband Cable Network (BCN) modem having a receiver capable of receiving packets from a plurality of nodes in a broadband cable network, the receiver comprising:

a RF subsystem in signal communication with the Modem subsystem, capable of receiving the packets and downconverting the packets;

a Modem subsystem in signal communication with the RF subsystem, the Modem subsystem capable of receiving the packets and removing control information from the packets; and

a MAC subsystem capable of receiving packets within the broadband cable network and retrieving data for use by the BCN modem;

wherein at least one of the packets is a beacon packet that has a channel number field, change field, sequence number field, network coordinator ID field, next beacon index field, admission frame length field, admission window, asynchronous MAP length field and a beacon Cyclic Redundancy Checking (CRC) field.

3. A method for transmitting packets from a Broadband Cable Network (BCN) modem to a plurality of nodes in a broadband cable network, the method comprising:

formatting packets in a MAC subsystem capable of transmitting the packets within the broadband cable network;

receiving packets from the MAC subsystem at a Modem subsystem that is in signal communication with the MAC subsystem, and appends information to the packets; and

upconverting the packets with information for transmission via the broadband cable network at a RF subsystem that is in signal communication with the Modem subsystem;

wherein at least one of the packets is a beacon packet that has a channel number field, change field, sequence number field, network coordinator ID field, next beacon index field, admission frame length field, admission window, asynchronous MAP length field and a beacon Cyclic Redundancy Checking (CRC) field.

4. A method for receiving packets at a receiver in a Broadband Cable Network (BCN) modem from at least one node in a broadband cable network, the method comprising:

receiving packets and downconverting the packets at a RF subsystem that is in signal communication with the Modem subsystem;

removing control information from the packets in a Modem subsystem; and

retrieving data for use by the BCN modem at a MAC subsystem that is in signal communication with the Modem subsystem and in receipt of the packet with control information removed;

wherein at least one of the packets is a beacon packet that has a channel number field, change field, sequence number field, network coordinator ID field, next beacon index field, admission frame length field, admission window, asynchronous MAP length field and a beacon Cyclic Redundancy Checking (CRC) field.

Assignments (8)