Adaptive multi-service data framing

摘要

When a signal-to-noise ratio affecting radio communication becomes sufficiently low, the data transmission rate is responsively decreased in compensation. The signal-to-noise ratio of the communication link is thereby increased. Data for multiple different services is transmitted in data packets between two radios. By allocating one part, or time slot, of the data packet's payload to one service, and allocating another part, or time slot, of the data packet's payload to another service, communications sessions for multiple services can be maintained concurrently. Services are prioritized relative to each other. In case the signal-to-noise ratio becomes too low, data packet portions that are related to lower-priority services can be omitted from some data packets before those data packets are transmitted. Data remaining in the packet can be sent at a reduced data transmission rate without causing the quality of service for the remaining packets to fall below the minimum required level.

主权项

1. A method comprising:
transmitting, on a carrier at a first data transmission rate using a first modulation scheme, first data packets that contain data for a plurality of communication services that includes one or more first communication services and one or more second communication services; wherein the step of transmitting the first data packets at the first transmission rate comprises inserting, into a subframe of at least one data packet that is to be transmitted, one or more copies of metadata that indicates a variance from a standard size of a communication service's data within the subframe; detecting that a signal-to-noise ratio on the carrier is less than a specified threshold; in response to detecting that the signal-to-noise ratio is less than the specified threshold, transmitting, on the carrier at a second data transmission rate using a second modulation scheme, second data packets that contain data for fewer communication services than are in the plurality of communication services, wherein the second data packets contain data for the one or more first communication services but not for the one or more second communication services; wherein the second data transmission rate is lower than the first data transmission rate.