Cascaded links with adaptive coding and modulation
First Claim
Patent Images
1. A communication system, comprising:
- a first communication unit, which is arranged to communicate with a remote communication system over a first communication link having a first, variable data rate; and
a second communication unit, which is arranged to exchange data with the remote communication system by communicating with the first communication unit over a second communication link having a second data rate,wherein the first and second communication units are arranged to modify the second data rate responsively to variations in the first data rate, so as to match the second data rate to the first data rate, wherein the first communication link uses Adaptive Coding and Modulation (ACM) in order to vary the first data rate, and wherein the first and second communication units are arranged to exchange with one another indications of ACM settings to be used by the first communication link,wherein the second communication unit is arranged to format the data in a first sequence of data frames, to encapsulate the first sequence of data frames in a second sequence of cable frames and to transmit the second sequence of cable frames over the second communication link, wherein the first communication unit is arranged to de-capsulate the second sequence of cable frames received over the second communication link so as to extract the first sequence of data frames, and to transmit the first sequence of data frames over the first communication link,wherein the first and second communication units comprise respective first and second controllers, which are arranged to exchange management data with one another by inserting the management data into the cable frames, andwherein the management data comprises the indications of the ACM settings to be used by the first communication link.
5 Assignments
0 Petitions
Accused Products
Abstract
A communication system includes a first communication unit, which is arranged to communicate with a remote communication system over a first communication link having a first, variable data rate. A second communication unit is arranged to exchange data with the remote communication system by communicating with the first communication unit over a second communication link having a second data rate. The first and second communication units are arranged to modify the second data rate responsively to variations in the first data rate, so as to match the second data rate to the first data rate.
-
Citations
39 Claims
-
1. A communication system, comprising:
-
a first communication unit, which is arranged to communicate with a remote communication system over a first communication link having a first, variable data rate; and a second communication unit, which is arranged to exchange data with the remote communication system by communicating with the first communication unit over a second communication link having a second data rate, wherein the first and second communication units are arranged to modify the second data rate responsively to variations in the first data rate, so as to match the second data rate to the first data rate, wherein the first communication link uses Adaptive Coding and Modulation (ACM) in order to vary the first data rate, and wherein the first and second communication units are arranged to exchange with one another indications of ACM settings to be used by the first communication link, wherein the second communication unit is arranged to format the data in a first sequence of data frames, to encapsulate the first sequence of data frames in a second sequence of cable frames and to transmit the second sequence of cable frames over the second communication link, wherein the first communication unit is arranged to de-capsulate the second sequence of cable frames received over the second communication link so as to extract the first sequence of data frames, and to transmit the first sequence of data frames over the first communication link, wherein the first and second communication units comprise respective first and second controllers, which are arranged to exchange management data with one another by inserting the management data into the cable frames, and wherein the management data comprises the indications of the ACM settings to be used by the first communication link. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A method for communication, comprising:
-
communicating between first and second communication systems over a cascaded connection of a first communication link having a first, variable data rate, and a second communication link having a second data rate; and modifying the second data rate responsively to variations in the first data rate, so as to match the second data rate to the first data rate, wherein the first communication link uses Adaptive Coding and Modulation (ACM) in order to vary the first data rate, and wherein communicating over the cascaded connection comprises exchanging over the second communication link indications of ACM settings to be used by the first communication link, wherein communicating over the cascaded connection comprises formatting data in a first sequence of data frames, encapsulating the first sequence of data frames in a second sequence of cable frames, transmitting the second sequence of cable frames over the second communication link, de-capsulating the second sequence of cable frames received over the second communication link so as to extract the first sequence of data frames, and transmitting the first sequence of data frames over the first communication link, wherein encapsulating the first sequence in the second sequence comprises exchanging management data over the second communication link by inserting the management data into the cable frames, and wherein the management data comprises the indications of the ACM settings to be used by the first communication link. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
-
-
37. A communication network, comprising:
-
a first communication system, comprising; a first communication unit, which is arranged to communicate over a first communication link having a first, variable data rate; and a second communication unit, which is arranged to communicate with the first communication unit over a second communication link having a second data rate; and a second communication system, comprising; a third communication unit, which is arranged to communicate with the first communication unit over the first communication link; and a fourth communication unit, which is arranged to send data to the second communication unit via the first and second communication links by communicating with the third communication unit over a third communication link having a third data rate, wherein the first, second, third and fourth communication units are arranged to modify at least one of the second and third data rates responsively to variations in the first data rate, so as to match the at least one of the second and third data rates to the first data rate, wherein the first communication unit is arranged to indicate the variations to the fourth communication unit via the second communication unit, wherein the first communication unit is arranged to indicate the variations in the first data rate to the fourth communication unit, and wherein the fourth communication unit is arranged to initiate a modification of the first data rate and the at least one of the second and third data rates based on the indicated variations. - View Dependent Claims (38, 39)
-
Specification