Progressive modulation for downstream access
AssigneeEntropic Communications, Inc.
InventorsChi-ping Nee, Michail Tsatsanis, David Barr
Life of this patent
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Abstract
A method, system and computer program for transmitting at least two payloads in a downstream traffic phase of a time-division duplex (TDD) cycle with a single preamble from a headend followed by concatenated payloads without intervening preambles, whereby the payloads are ranked by increasing modulation profiles. The preamble, and concatenated and ordered set of payloads are then transmitted to two or more predetermined customer premise equipments (CPEs).
Claims21
1-6. (canceled)
A method of transmitting at least two payloads in a downstream traffic phase of a time-division duplex (TDD) cycle, the method comprising:
- ordering by rank at least a first payload to be transmitted to a first destination node and a second payload to be transmitted to a second destination node, wherein said ordering comprises:
- determining a first modulation profile for the first payload;
- determining a second modulation profile for the second payload;
- and
- ordering the first payload and the second payload in an order of increasing modulation profile;
- and
- transmitting the at least two payloads to at least the first destination node and the second destination node.
A method of transmitting at least two payloads in a downstream traffic phase of a time-division duplex (TDD) cycle, the method comprising:
- assigning a first modulation profile to a first payload of the at least two payloads, where the first payload is to be communicated to a first destination node and not to a second destination node;
- assigning a second modulation profile to a second payload of the at least two payloads, where the second payload is to be communicated to the second destination node and not to the first destination node;
- ordering, based at least in part on the first modulation profile and the second modulation profile, the first payload and the second payload;
- and
- transmitting a preamble followed by the ordered first and second payloads, wherein there is no preamble between the transmitted first and second payloads.
A method of transmitting at least two payloads in a downstream traffic phase of a time-division duplex (TDD) cycle, the method comprising:
- ordering a plurality of payloads by distance, wherein the plurality of payloads comprise:
- a first payload to be transmitted to a first destination node, where the first destination node is characterized by a first distance;
- and
- a second payload to be transmitted to a second destination node, wherein the second destination node is characterized by a second distance;
- transmitting a preamble followed by the ordered plurality of payloads, wherein there is no preamble between the transmitted first and second payloads.
Dependencies are inferred from the claim text.