PUSCH Repetition Mapping Type B for Uplink Resource Efficiency
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Solution Overview
Problem
The increasing number of user equipment (UEs) and the growing volume of data and control information in wireless communication systems pose challenges in efficiently using limited radio resources, particularly in high-density node and UE scenarios, where latency and delay-sensitive applications require enhanced communication capabilities.
Innovation Solution
A method for efficiently transmitting a physical uplink shared channel (PUSCH) by determining and utilizing multiple radio resources, including applying PUSCH mapping type B and transmitting demodulation reference signals (DMRS) based on these resources, to optimize data and control information transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of user equipment (UEs) and data volume increase to meet growing communication demands, then communication capacity and data throughput are improved, but radio resource efficiency deteriorates due to limited available resources
Solution Approach 1:
The patent segments the uplink transmission into multiple PUSCH repetitions transmitted across multiple radio resources. Each repetition carries the same data but uses different time-frequency resources, allowing the system to improve throughput through diversity while managing resource usage more efficiently by spreading transmissions across multiple smaller resource allocations rather than requiring a single large allocation.
2Productivity
If multiple radio resources are allocated for PUSCH transmission to improve throughput, then data transmission capacity is improved, but resource allocation complexity increases
Solution Approach 1:
The patent applies PUSCH mapping type B in advance, which pre-defines the relationship between the PUSCH and demodulation reference signals (DMRS). This preliminary configuration simplifies the resource allocation process by establishing fixed mapping rules before transmission, reducing the complexity of dynamic resource management while enabling efficient use of multiple radio resources for repeated transmissions.
3Reliability
If PUSCH repetitions are transmitted multiple times to enhance reliability for delay-sensitive applications, then transmission reliability is improved, but transmission latency increases
Solution Approach 1:
The patent employs periodic PUSCH repetitions transmitted at regular intervals across multiple radio resources. This periodic transmission pattern allows the system to achieve reliability through multiple transmission opportunities while optimizing latency by spacing repetitions efficiently in time. The periodic structure enables predictable resource usage and allows receivers to anticipate and prepare for repeated transmissions, reducing processing delays.
Data Source
AI summary
A user equipment/base station receives/transmits resource allocation for a PUSCH; determines a plurality of radio resources on the basis of the resource allocation; and repeatedly transmits/receives the PUSCH on the basis of the plurality of radio resources. The repeated transmission/reception of the PUSCH may comprise: applying PUSCH mapping type B to each of the plurality of radio resources; and transmitting a demodulation reference signal (DMRS) for the PUSCH, on the basis of the plurality of radio resources and the PUSCH mapping type B.