Superposition Data Combination for Radio Resource Efficiency
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in data retransmission, particularly in scenarios where only one mobile station has data to transmit, leading to wasteful energy consumption and increased radio resource usage due to the need for multiuser ARQ schemes and cooperative uplink relaying, which are not always applicable.
Innovation Solution
A method that involves transmitting a combination of data from a single data source or sink by applying a superposition of the first and second data, allowing for more efficient use of radio resources and reducing energy consumption by eliminating the need for receiving data from or transmitting to additional sources or sinks, and enabling recovery of both data streams through combined retransmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiuser ARQ scheme or cooperative uplink relaying is applied, then retransmission capability is improved, but energy consumption and radio resource usage increase
Solution Approach 1:
The patent segments the retransmission process by identifying that only the first data packet requires retransmission while the second data packet was correctly received. This segmentation allows the system to avoid unnecessary processing and energy consumption associated with retransmitting and decoding the second packet, thereby resolving the contradiction between maintaining retransmission capability and reducing energy consumption.
Solution Approach 2:
The patent extracts only the necessary retransmission operations - specifically, retransmitting only the first data packet that failed to be received correctly. By taking out the unnecessary retransmission of the second packet, the system maintains adequate retransmission capability while significantly reducing energy consumption and radio resource usage.
2Reliability
If multiuser ARQ scheme or cooperative uplink relaying is applied, then retransmission capability is improved, but radio resource usage increases
Solution Approach 1:
The patent segments the retransmission operations to identify that only one data packet (the first packet) requires retransmission. This segmentation prevents the wasteful use of radio resources that would occur if both packets were retransmitted, thereby maintaining retransmission capability while reducing radio resource consumption.
Solution Approach 2:
The patent extracts and eliminates the unnecessary retransmission of the second data packet from the system operations. By removing this redundant operation, the system maintains its retransmission capability for actually failed packets while significantly reducing the quantity of radio resources consumed.
3Productivity
If combination of first data and second data is transmitted, then radio resource efficiency is improved, but device complexity increases
Solution Approach 1:
The patent segments the data handling process to identify that only the first data packet needs to be retransmitted. This segmentation simplifies the combining operation, as the system only needs to combine the retransmitted first packet with the correctly received second packet, rather than handling more complex multi-packet combinations, thereby improving radio resource efficiency while controlling device complexity.
Data Source
AI summary
The invention relates to a method (MET1) for transmitting data from a first network node (BS) of a radio access network of a radio communication system to a second network node (MS) of the radio access network, and wherein the method (MET1) comprises the steps of transmitting (M1/6) a first negative acknowledgement (N1) from the second network node (MS), if the second network node (MS) cannot recover error free first data (D1), the first data (D1) being data from a single data source of the radio access network or for a single data sink of the radio access network, determining (M1/11) a combination (COMB1) of the first data (D1) and of at least second data (D2) by applying a superposition of the first data (D1) and the at least second data (D2), the at least second data (D2) being further data from the single data source or for the single data sink, and transmitting (M1/18) the combination (COMB1) to the second network node (MS). The method further relates to the first network node (BS) for use in the radio communication system and to the second network node (MS) for use in the radio communication system.