Transmission rate selection in mobile applications

In a wireless communication system, a method of selecting an instance from among a set of instances of a plurality of transmission parameters for transmitting a packet from a transmitting node to a first receiving node of a plurality of wireless nodes, the plurality of transmission parameters including a data transmission rate, the method comprising the following steps performed by the transmitting node:

• obtaining an updated predictive Received Signal Quality Indicator value reflecting signal quality expected to be experienced by the first receiving node on the packet received from the transmitting node,
• obtaining a best instance from among the set of instances of the plurality of transmission parameters, in correspondence of a Received Signal Quality Indicator sub-range, among contiguous non-overlapping sub-ranges of a predefined range of Received Signal Quality Indicator values, that includes the obtained updated predictive Received Signal Quality Indicator value, and
• transmitting the packet from the transmitting node to the first receiving node by using the obtained best instance,
• wherein,
• the transmitting node maintains a first table associated with the first receiving node wherein, for each Received Signal Quality Indicator sub-range and for each instance, the first table comprises packet transmission feedbacks received by the transmitting node from the first receiving node for a last packet transmitted from the transmitting node to the first receiving node by using the instance, and for which the first receiving node experienced an actual Received Signal Quality Indicator value, which is included in the Received Signal Quality Indicator sub-range,
• the best instance is determined by the transmitting node for each Received Signal Quality Indicator sub-range, based on the packet transmission feedbacks stored in the first table in correspondence of the Received Signal Quality Indicator sub-range,
• the first table is updated using a first table update procedure when a feedback packet, comprising the transmission feedbacks, is received by the transmitting node from the first receiving node after a packet is sent from the transmitting node to the first receiving node, and
• the transmitting node periodically performs a test procedure wherein, instead of using the best instance, the packet is transmitted by the transmitting node to the first receiving node by using a test instance selected among the set of instances for the Received Signal Quality Indicator sub-range that includes the obtained updated predictive Received Signal Quality Indicator value.