Technique for transferring data in a radio communication

A method of communicating data via a radio bearer that includes a first layer function entity associated with a first layer of a protocol stack and at least two second layer functions or entities associated with a second layer of the protocol stack, wherein the second layer is lower than the first layer in the protocol stack, wherein the first layer includes a Packet Data Convergence Protocol (PDCP) layer, and wherein the second layer includes a Radio Link Control (RLC) layer, the method comprising:

• transmitting data, duplicated by a transmitting station, through each of the at least two second layer entities;
• receiving a feedback indicative of a result of validating the data transmitted through the at least two second layer entities, wherein the feedback is indicative of a result of comparing the data received through each of the second layer entities;
• and
• selectively retransmitting the data through at least one of the second layer entities, if the result of the validation is indicative of an inconsistency for the data transmitted through the at least two second layer entities.

A device for communicating data via a radio bearer that includes a first layer function or entity associated with a first layer of a protocol stack and at least two second layer functions or entities associated with a second layer of the protocol stack, wherein the second layer is lower than the first layer in the protocol stack, wherein the first layer includes a Packet Data Convergence Protocol (PDCP) layer, and wherein the second layer includes a Radio Link Control (RLC) layer, the device comprising:

• processing circuitry;
• and
• memory containing instructions executable by the processing circuitry whereby the device is operative to:
• receive data, duplicated by a transmitting station, through each of the at least two second layer entities;
• validate the data received through the at least two second layer entities, wherein the first layer entity validates the data received through the at least two second layer entities by comparing the data received through each of the second layer entities;
• and
• selectively trigger a retransmission of the data through at least one of the second layer entities, if a result of the validation is indicative of an inconsistency in the data received through the at least two second layer entities.

A device for communicating data via a radio bearer that includes a first layer function or entity associated with a first layer of a protocol stack and at least two second layer functions or entities associated with a second layer of the protocol stack, wherein the second layer is lower than the first layer in the protocol stack, wherein the first layer includes a Packet Data Convergence Protocol (PDCP) layer, and wherein the second layer includes a Radio Link Control (RLC) layer, the device comprising:

• processing circuitry;
• and
• memory containing instructions executable by the processing circuitry whereby the device is operative to:
• transmit data, duplicated by a transmitting station, through each of the at least two second layer entities;
• receive a feedback indicative of a result of validating the data transmitted through the at least two second layer entities, wherein the feedback is indicative of a result of comparing the data received through each of the second layer entities;
• and
• selectively retransmit the data through at least one of the second layer entities, if the result of the validation is indicative of an inconsistency for the data transmitted through the at least two second layer entities.