公开(公告)号：US08934503B2

公开(公告)日：2015-01-13

申请号：US13917972

申请日：2013-06-14

Applicant: Broadcom Corporation

Inventor： Lisa Voigt Denney ,  Hooman Moshar ,  John Daniel Horton ,  Shane Patrick Lansing ,  Sean Francis Nazareth ,  Niki Roberta Pantelias

IPC: H04J3/24 ,  H04L29/06 ,  H04L12/28 ,  H04L12/54 ,  H04L12/873 ,  H04L12/863 ,  H04L12/861 ,  H04N7/173

CPC classification number: H04L29/0653 ,  H04L12/2801 ,  H04L47/50 ,  H04L47/52 ,  H04L47/6215 ,  H04L49/9094 ,  H04N7/17309

Abstract: A supervisory communications device, such as a headend device within a communications network, monitors and controls communications with a plurality of remote communications devices throughout a widely distributed network. The supervisory device allocates bandwidth on the upstream channels by sending MAP messages over its downstream channel. A highly integrated media access controller integrated circuit (MAC IC) operates within the headend to provide lower level processing on signals exchanged with the remote devices. The enhanced functionality of the MAC IC relieves the processing burden on the headend CPU and increases packet throughput. The enhanced functionality includes header suppression and expansion. DES encryption and decryption, fragment reassembly, concatenation, and DMA operations.

Abstract translation: 诸如通信网络内的头端设备的监控通信设备在广泛分布的网络中监视和控制与多个远程通信设备的通信。 监控设备通过在其下行信道上发送MAP消息来在上行信道上分配带宽。 高集成度的媒体访问控制器集成电路（MAC IC）在头端内部进行操作，以便与远程设备交换的信号提供较低级别的处理。 MAC IC的增强功能减轻了头端CPU的处理负担，并增加了数据包吞吐量。 增强的功能包括报头抑制和扩展。 DES加密和解密，片段重组，级联和DMA操作。

公开(公告)号：US20130279523A1

公开(公告)日：2013-10-24

申请号：US13917972

申请日：2013-06-14

Applicant: Broadcom Corporation

Inventor： Lisa Voigt Denney ,  Hooman Moshar ,  John Daniel Horton ,  Shane Patrick Lansing ,  Sean Francis Nazareth ,  Niki Roberta Pantelias

IPC: H04L29/06

CPC classification number: H04L29/0653 ,  H04L12/2801 ,  H04L47/50 ,  H04L47/52 ,  H04L47/6215 ,  H04L49/9094 ,  H04N7/17309

Abstract: A supervisory communications device, such as a headend device within a communications network, monitors and controls communications with a plurality of remote communications devices throughout a widely distributed network. The supervisory device allocates bandwidth on the upstream channels by sending MAP messages over its downstream channel. A highly integrated media access controller integrated circuit (MAC IC) operates within the headend to provide lower level processing on signals exchanged with the remote devices. The enhanced functionality of the MAC IC relieves the processing burden on the headend CPU and increases packet throughput.. The enhanced functionality includes header suppression and expansion. DES encryption and decryption, fragment reassembly, concatenation, and DMA operations.

Abstract translation: 诸如通信网络内的头端设备的监控通信设备在广泛分布的网络中监视和控制与多个远程通信设备的通信。 监控设备通过在其下行信道上发送MAP消息来在上行信道上分配带宽。 高集成度的媒体访问控制器集成电路（MAC IC）在头端内部进行操作，以便与远程设备交换的信号提供较低级别的处理。 MAC IC的增强功能减轻了头端CPU的处理负担，并增加了数据包吞吐量。增强的功能包括报头抑制和扩展。 DES加密和解密，片段重组，级联和DMA操作。