UE Resource Allocation Puncturing for Power-Constrained Wireless Transmission
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Solution Overview
Problem
Next-generation wireless communication systems face inefficiencies in resource allocation, where user equipment (UE) may not utilize all allocated resources or may require a lower modulation and coding scheme (MCS) due to power limitations, leading to suboptimal performance and potential waste of resources.
Innovation Solution
The UE dynamically selects a subset of allocated resources and/or a lower MCS, and communicates this selection to the base station, allowing for puncturing of unused resources and efficient use of available power, thereby optimizing resource utilization and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base station allocates resources to the UE, then the UE can transmit data, but the UE may not utilize all allocated resources due to power limitations
Solution Approach 1:
The UE transmits only a portion of the allocated resources when power is limited. The UE determines a first subset of code blocks to transmit and applies puncturing to a second subset of code blocks, thereby using partial allocated resources rather than all resources, which reduces power consumption while maintaining essential data transmission.
Solution Approach 2:
The UE dynamically changes transmission parameters (MCS) based on available power. When power is sufficient, the UE uses a first MCS; when power is limited, the UE switches to a second, lower MCS. This parameter adaptation allows the UE to match transmission quality with available power, optimizing both resource utilization and energy efficiency.
2Reliability
If the UE uses a lower MCS due to power limitations, then the transmission reliability improves, but the data transmission rate decreases
Solution Approach 1:
The UE dynamically selects MCS based on real-time power availability. The UE can switch between a first MCS (higher rate, lower reliability) and a second MCS (lower rate, higher reliability) depending on whether power is sufficient or limited. This dynamic adaptation allows the system to optimize the trade-off between reliability and transmission rate based on current conditions.
Solution Approach 2:
The UE segments the allocated resources into different code block groups and selectively transmits subsets. By dividing the transmission into manageable code blocks and selecting which subsets to transmit, the UE can maintain reliability for critical data while adjusting overall transmission rate to match power availability.
3Productivity
If the UE transmits using all allocated resources, then the data transmission rate increases, but the block error rate increases due to power limitations
Solution Approach 1:
The UE changes the MCS parameter based on power availability to control the block error rate. When power is limited, the UE uses a lower second MCS which reduces the block error rate compared to using the first MCS with all allocated resources. This parameter adjustment ensures reliable transmission within power constraints.
Solution Approach 2:
The UE transmits only a subset of allocated code blocks when power is limited, rather than using all allocated resources. By transmitting a first subset of code blocks and puncturing a second subset, the UE reduces the total transmission load, thereby reducing the block error rate while still maintaining some data transmission rate.
Data Source
AI summary
Aspects relate to using less than all of an allocation for sending information. For example, a first device such as a user equipment (UE) may receive a grant from a second device such as a base station (e.g., a gNB) where the grant identifies resources and/or a modulation and coding scheme (MCS) allocated to the first device for a transmission. Due to one or more factors, the first device may elect to not use all of the allocated resources and/or may elect to use a lower MCS value. In some implementations, the first device may send an indication of this election to the second device. In some implementations, the first device may send information in a first subset of the allocated resources and apply puncturing to a second subset of the allocated resource.