Optimizing requested downlink data by adjusting frame number by measuring actual transmission delay
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsJonas Waldeck, Magnus Björklund
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Abstract
The invention relates to a method and an arrangement for optimizing a link latency on a communication interface in a communication network comprising a first communication network node (18) and a second communication network node (16) communicating with said first communication network node (18) on said communication interface and sending framed data packets having frame numbers to a plurality of user equipments over a radio interface. A transmission delay on said communication interface is measured and downlink data having an adjusted frame number based on said measured transmission delay is requested.
Claims15
A method for optimizing a link latency on a communication interface in a communication network including a first communication network node and a second communication network node communicating with said first communication network node on said communication interface, said method comprising the steps of:
- sending framed data packets having frame numbers to a plurality of user equipments over a radio interface;
- measuring a transmission delay on said communication interface by said second communication network node;
- requesting downlink data from said first communication network node, said downlink data having an adjusted frame number based on said measured transmission delay;
- wherein the step of measuring the transmission delay further comprises the steps of:
- measuring a time needed to transport said downlink data request to said first communication network node;
- measuring a time needed to schedule said data;
- measuring a time needed to transport said requested downlink data to said second communication network node;
- obtaining said measured transmission delay by adding said measured times.
An arrangement for optimizing a link latency on a communication interface in a communication network including a first communication network node and a second communication network node communicating with said first communication network node on said communication interface, the second communication network node comprising a first processor configured for:
- sending framed data packets having frame numbers to a plurality of user equipments over a radio interface,
- measuring a transmission delay on said communication interface within said second communication network node;
- requesting downlink data having an adjusted frame number based on said measured transmission delay within said second communication network node,
- wherein measuring the transmission delay comprises
- measuring a time needed to transport said downlink data request to said first communication network node;
- measuring a time needed to schedule said data;
- measuring a time needed to transport said requested downlink data to said second communication network node;
- obtaining said measured transmission delay by adding said measured times.
A non-transitory computer-readable medium containing computer program for optimizing a link latency on a communication interface in a communication network including a first communication network node and a second communication network node communicating with said first communication network node on said communication interface, wherein the computer program performs the steps of:
- sending framed data packets having frame numbers to a plurality of user equipments over a radio interface;
- measuring a transmission delay on said communication interface;
- requesting downlink data having an adjusted frame number based on said measured transmission delay,
- wherein the step of measuring the transmission delay further comprises the steps of:
- measuring a time needed to transport said downlink data request to said first communication network node;
- measuring a time needed to schedule said data;
- measuring a time needed to transport said requested downlink data to said second communication network node;
- obtaining said measured transmission delay by adding said measured times.
Dependencies are inferred from the claim text.