Motorola Corporation

Richard J Corrigan

Timothy M Burke

Kurt W Steinbrenner

Frank C Pennypacker

Alan Lee Grau

Michael Russell Mannette

Hang Kiu Chan

Camille Louise Dozier

Jonas Butvila

Vladimir Dvorkin

Eva Labowicz

James A Fisher

Naveen Grover

Rachel Baumann

Srinivasan Anand

Scott Chu

David Ingham

A system (,) and method for packet telephony power management of a cable distribution network (,), i.e., a hybrid fiber coax (HFC) communication system, for internet protocol (IP) packet telephony information between multiple cable modem subscriber units (,) communicated over a public switch telephone network (PSTN) (,) with at least one router (,), e.g., a cable modem termination system (CMTS) on a communication network backbone. Power management is provided to minimize power consumption on the IP telephony distribution system (,) supporting line-powered cable-modem subscriber units (,). The power saving techniques are supported using a virtual broadcast channel (VBC) (,) provided in the packet telephony system using an alert queue (,). The alert queue (,) is established and segmented into a plurality of phases for selective activation, each phase having memory buffers for buffering packet telephony information communicated via the CMTSs (,). The multiple cable modem subscriber units (,) are divided into a plurality of alert phase groups, each alert phase group being associated with one of the plurality of phases of the alert queue. The VBC (,) may then be provided between the CMTS (,) and the subscriber units (,) for transmitting control information.

Packet telephony power management

A method for assigning communication resources includes assigning communication resources (,) in the nature of bandwidth according to various selection schemes based upon the type of communication service being provided, and based upon the nature of the service area (,) and subscriber premises (,).

Method for assigning communication resources in a communication system

A cable communication system (,) where a control unit (,) sends operation parameters to subscriber units (,) and the subscriber units (,) respond by modifying the method of communication. Also, the subscriber units (,) send messages which include information on the subscriber unit (,) and the capabilities of the subscriber unit (,). Furthermore, the control unit (,) efficiently manages the system,by monitoring the capabilities and instructing the subscriber units (,) on-how to communicate on the system (,). Such management allows for the migration of subscriber units (,) from one service area (,) to another (,) without the disruption of service. In addition, initialization of subscriber units (,) may be accomplished over the cable and does not require an operator at the subscriber location.

Cable communication system and method for management

A method and apparatus in a communication system (100) for allocating and controlling data transmissions to and from communications unit (134) in communications system (100). The communication systems (100) includes a cable distribution network (106) with a base communications unit (102) and a number of downstream communications units (134) all connected to the cable distribution network (106). A plurality of channels are used to transmit data transmissions between the base communications unit (100) and the downstream communications unit (134). Uplink and downlink channels are monitored to determine channel quality for each of the channels in communications system (100). The determined channel quality is used to both initiate transfers of communications links to other frequencies and for assigning channels to various communications units (134).

Channel quality management in a cable telephony system

A method for detecting fraudulent use of a communication system (10) includes the steps of determining a system parameter associated with a subscriber unit (32). The system then compares the system parameter to a previous system parameter for the subscriber unit (32). An alarm is set when the system parameter differs more than a predetermined amount from the previous system parameter.

Method for detecting fraudulent use of a communication system

A method of updating a software code in a cable communication system (10) involves the steps of receiving a notification (100) by a cable access unit (30). Next, the cable access unit (30) receives (110) the software code. After receiving (110) the software code the CAU (30) resets (114) and reboots using the software code.

Method for updating a software code in a communication system

A data link control method including receiving a message (30) for transmission over a cable communications system. The method determines a number of octets in the message (30). When the number of octets is less than or equal to a predetermined number of octets, the method sets a frame length (44) equal to the number of octets and transmits a frame (180) containing the message (30). When the number of octets is greater than the predetermined number, the messages (30) is segmented (32-42), each segment being identified in order with respect to the other segments. The method thereby provides for graceful communications resumption when the transmission of a message is interrupted before completion.

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Schaumburg, IL, United States of America

Richard J Corrigan