Method and apparatus for reducing preamble length in passive optical network (PON) systems
AssigneeNokia of America Corporation
InventorRoy B. Tebbe
Life of this patent
Estimating the term…
Abstract
A method of handling upstream data transmissions in a passive optical network includes determining signal power levels of a plurality of optical network units (ONUs); and scheduling transmissions of upstream data bursts of the plurality of ONUs by, assigning each of the upstream data bursts to one of two or more data burst groups based on the determined signal power levels, and selecting time intervals during which the upstream data bursts are transmitted in accordance with the two or more data burst groups such that the two or more data burst groups are scheduled to be transmitted sequentially.
Claims18
A method of handling upstream data transmissions in a passive optical network, the method comprising:
- determining signal power levels of a plurality of optical network units (ONUs);
- and
- scheduling transmissions of upstream data bursts of the plurality of ONUs by,
- assigning each of the upstream data bursts to one of two or more data burst groups based on the determined signal power levels, and
- selecting time intervals during which the upstream data bursts are transmitted in accordance with the two or more data burst groups such that the two or more data burst groups are scheduled to be transmitted sequentially,
- wherein the scheduling of the transmissions of the upstream data bursts includes scheduling of the transmissions of the upstream data bursts such that a length of an intra-group preamble is different than a length of an inter-group preamble,
- the intra-group preamble being a preamble between time intervals of two consecutive upstream data bursts that belong to a same data burst group from among the two or more data burst groups,
- the inter-group preamble being a preamble between time intervals of two consecutive upstream data bursts that belong to two different data burst groups, respectively, from among the two or more data burst groups.
A passive optical network (PON) element comprising:
- memory storing computer-executable instructions;
- and
- one or more processors configured to execute the computer-executable instructions such that the one or more processors are configured to,
- determine signal power levels of a plurality of optical network units (ONUs);
- and
- schedule transmissions of upstream data bursts of the plurality of ONUs by,
- assigning each of the upstream data bursts to one of two or more data burst groups based on the determined signal power levels, and
- selecting time intervals during which the upstream data bursts are transmitted in accordance with the two or more data burst groups such that the two or more data burst groups are scheduled to be transmitted sequentially,
- wherein the one or more processors are configured to execute the computer-executable instructions such that scheduling of the transmissions of the upstream data bursts includes scheduling of the transmissions of the upstream data bursts such that a length of an intra-group preamble is different than a length of an inter-group preamble,
- the intra-group preamble being a preamble between time intervals of two consecutive upstream data bursts that belong to a same data burst group from among the two or more data burst groups,
- the inter-group preamble being a preamble between time intervals of two consecutive upstream data bursts that belong to two different data burst groups, respectively, from among the two or more data burst groups.
Dependencies are inferred from the claim text.