Scheduling mechanisms in full duplex cable network environments
First Claim
Patent Images
1. A method comprising:
- categorizing a plurality of cable modems in a cable network into interference groups;
scheduling, by a cable modem termination system (CMTS) in the cable network, upstream transmissions and downstream receptions for cable modems in each interference group, such that no cable modem of any one interference group transmits upstream in a frequency range simultaneously as another cable modem in the same interference group receives downstream in the frequency range, wherein downstream transmission frequency is interleaved across a downstream symbol spanning a frequency range of an orthogonal frequency division multiplex block, wherein upstream transmission frequency is interleaved across an upstream symbol, wherein the upstream symbol is aligned with the downstream symbol;
generating scheduling information of the scheduling; and
transmitting the scheduling information to the cable modems.
1 Assignment
0 Petitions
Accused Products
Abstract
An example method for scheduling in full duplex cable network environments is provided and includes categorizing a plurality of cable modems in a cable network into interference groups, scheduling upstream transmissions and downstream receptions for cable modems in each interference group, such that no cable modem of any one interference group transmits upstream in a frequency range simultaneously as another cable modem in the same interference group receives downstream in the frequency range, generating scheduling information of the scheduling, and transmitting the scheduling information to the cable modems.
-
Citations
19 Claims
-
1. A method comprising:
-
categorizing a plurality of cable modems in a cable network into interference groups; scheduling, by a cable modem termination system (CMTS) in the cable network, upstream transmissions and downstream receptions for cable modems in each interference group, such that no cable modem of any one interference group transmits upstream in a frequency range simultaneously as another cable modem in the same interference group receives downstream in the frequency range, wherein downstream transmission frequency is interleaved across a downstream symbol spanning a frequency range of an orthogonal frequency division multiplex block, wherein upstream transmission frequency is interleaved across an upstream symbol, wherein the upstream symbol is aligned with the downstream symbol; generating scheduling information of the scheduling; and transmitting the scheduling information to the cable modems. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. Non-transitory tangible computer-readable media that includes instructions for execution, which when executed by a processor, is operable to perform operations comprising:
-
categorizing, by the processor disposed in a cable modem termination system (CMTS) in the cable network, a plurality of cable modems in a cable network into interference groups; scheduling upstream transmissions and downstream receptions for cable modems in each interference group, such that no cable modem of any one interference group transmits upstream in a frequency range simultaneously as another cable modem in the same interference group receives downstream in the frequency range, wherein the interference groups are sorted into interference blocks, wherein each interference block comprises a plurality of symbols including a symbol for guard time, wherein interleaving is implemented using the interference blocks; generating scheduling information of the scheduling; and transmitting the scheduling information to the cable modems. - View Dependent Claims (12, 13, 14, 15)
-
-
16. An apparatus disposed in a cable modem termination system (CMTS) in a cable network, comprising:
-
a memory for storing data; and a processor operable to execute instructions associated with the data, wherein the processor and the memory cooperate, such that the apparatus is configured for; categorizing a plurality of cable modems in the cable network into interference groups; scheduling upstream transmissions and downstream receptions for cable modems in each interference group, such that no cable modem of any one interference group transmits upstream in a frequency range simultaneously as another cable modem in the same interference group receives downstream in the frequency range, wherein frequency interleaving is added to time interleaving, wherein symbols at each symbol time are rearranged according to a storage access scheme without introducing delay; generating scheduling information of the scheduling; and transmitting the scheduling information to the cable modems. - View Dependent Claims (17, 18, 19)
-
Specification