Concept for bidirectional data transmission between a base station and a node

A base station comprising bidirectional data transmission to a node, comprising:

• a receiver for receiving a data packet transmitted by the node at a node transmission point in time and at a node transmission frequency, the node transmission point in time being derived from a timer of the node, the node transmission frequency being derived from a frequency generator of the node, wherein the frequency generator of the node and the timer of the node are coupled;
• a determiner for determining the node transmission point in time based on the data packet received and for determining a time deviation of the timer of the node based on a time deviation between the determined node transmission point in time and a set node transmission point in time associated to the node;
• and
• a determiner for determining a deviation of the frequency generator of the node based on the determined time deviation of the timer of the node and the coupling between the frequency generator of the node and the timer of the node.

A method for bidirectional data transmission between a base station and a node, comprising:

• receiving a data packet transmitted by the node at a node transmission frequency and at a node transmission point in time, the node transmission frequency being derived from a frequency generator of the node, the node transmission point in time being derived from a timer of the node, wherein the frequency generator of the node and the timer of the node are coupled;
• determining the node transmission frequency based on the data packet received and determining a deviation of the frequency generator of the node based on a frequency deviation between the determined node transmission frequency and a set node transmission frequency associated to the node;
• and
• determining a time deviation of the timer of the node based on the determined deviation of the frequency generator of the node and the coupling between the frequency generator of the node and the timer of the node.

A method for bidirectional data transmission between a base station and a node, comprising:

• receiving a data packet transmitted by the node at a node transmission point in time and at a node transmission frequency, the node transmission point in time being derived from a timer of the node, the node transmission frequency being derived from a frequency generator of the node, wherein the frequency generator of the node and the timer of the node are coupled;
• determining the node transmission point in time based on the data packet received and determining a time deviation of the timer of the node based on a time deviation between the determined node transmission point in time and a set node transmission point in time associated to the node;
• and
• determining a deviation of the frequency generator of the node based on the determined time deviation of the timer of the node and the coupling between the frequency generator of the node and the timer of the node.