Wireless Communication Resource Block Encoding for Throughput
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Solution Overview
Problem
Current radio communication techniques using OFDM for mobile communication struggle to achieve maximum throughput and satisfy required received quality due to limited modulation schemes and encoding block size, which degrades error correcting performance and transmission efficiency.
Innovation Solution
A radio communication apparatus that divides subcarriers into resource blocks and employs adaptive control for modulation schemes and repetition factors across each block, ensuring all resource blocks are encoded at the same coding rate, allowing for flexible modulation and repetition strategies based on channel quality indicators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bandwidth for resource blocks is set narrower to acquire multi-user diversity gain, then the multi-user diversity gain is improved, but the number of bits that can be transmitted per resource block decreases
Solution Approach 1:
The patent segments the resource blocks into multiple groups and performs separate error correcting encoding for each group. This allows the system to maintain narrow resource block bandwidth for diversity gain while accumulating bits across multiple groups to achieve sufficient encoding block size for effective error correction.
Solution Approach 2:
The patent changes the encoding block size parameter by combining multiple resource blocks into groups for joint encoding. This resolves the contradiction by effectively increasing the encoding block size without increasing the bandwidth of individual resource blocks, thereby maintaining diversity gain while improving bit transmission capacity.
2Quantity of substance
If the encoding block size becomes smaller when the number of bits per resource block decreases, then the error correcting performance is significantly degraded
Solution Approach 1:
The patent merges multiple resource blocks into encoding groups and performs joint error correcting encoding on each group. This combining approach accumulates sufficient bits to form adequate encoding block sizes, thereby maintaining high error correcting performance even when individual resource blocks have limited bit capacity.
3Ease of operation
If only modulation scheme is adaptively controlled per resource block with limited modulation schemes available, then the implementation is simple, but delicate received quality and transmission rate cannot be controlled
Solution Approach 1:
The patent introduces dynamic control by adding repetition factor adjustment to the existing modulation scheme control. This creates a two-dimensional adaptive control mechanism that can finely tune both transmission rate and received quality, overcoming the limitation of having only discrete modulation schemes while maintaining implementation feasibility.
4Ease of manufacture
If the available modulation scheme is limited to standard schemes, then the system is easier to implement, but maximum throughput cannot be achieved
Solution Approach 1:
The patent changes the transmission parameters by introducing repetition factor control in addition to modulation scheme selection. This allows the system to achieve higher effective throughput through repetition coding while still using standard modulation schemes, thereby improving productivity without sacrificing implementation ease.
Data Source
AI summary
Provided is a wireless communication apparatus by which the maximum throughput can be obtained while satisfying required reception qualities in multicarrier communication. In the apparatus, a coding section (101) performs error correction coding to all of the plurality of resource blocks at a same coding rate, modulating sections (103-1 to 103-n) generate data symbols by modulating coding data for each of the resource blocks (1 to n), and repetition sections (104-1 to 104-n) repeat the data symbols inputted from the modulation section (103) for each of the resource blocks (1 to n) to generate a plurality of same data symbols. Namely, while the coding rate is same in all of the resource blocks, modulation system and the number of repetitions differ by resource block.