Uplink Power Control for Transport Block Groups
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Solution Overview
Problem
In wireless communications, existing systems face challenges in efficiently managing power allocation for multiple uplink shared channel communications, particularly when higher priority communications need to be scheduled in resources previously allocated for lower priority communications, leading to potential interference and unnecessary power consumption.
Innovation Solution
The implementation of different open loop power control (OLPC) parameters for separate groups of transport blocks (TBs) based on an OLPC parameter set indication field, allowing for power boosting in higher priority communications while minimizing interference and power consumption by adjusting transmission powers according to specific SRS resource sets and transmission occasions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If higher priority communications are scheduled in resources previously allocated for lower priority communications, then the reliability of higher priority communications is improved, but interference increases and power consumption increases
Solution Approach 1:
The patent applies different OLPC parameter sets to different transport blocks based on their priority levels. High priority TBs receive power-boosted OLPC parameters while low priority TBs use normal parameters, creating localized quality differentiation that improves high priority communication reliability without unnecessarily increasing interference from low priority transmissions
Solution Approach 2:
The patent changes OLPC parameters (specifically p0-PUSCH values) based on communication priority and overlap conditions. When high priority communications are scheduled in overlapping resources, the system adjusts OLPC parameters to provide power boosting only where needed, thereby improving reliability while controlling interference
2Reliability
If power boosting is applied to higher priority communications, then the reliability of higher priority communications is improved, but power consumption increases
Solution Approach 1:
The patent applies power boosting selectively only to high priority transport blocks that are scheduled in overlapping resources, rather than uniformly to all transmissions. This localized application of increased power improves reliability where needed while avoiding unnecessary power consumption in non-overlapping or low priority transmissions
Solution Approach 2:
The patent implements partial power boosting by applying enhanced OLPC parameters only to specific high priority TBs that require it, rather than excessive full-power transmission across all TBs. This partial action approach achieves the necessary reliability improvement while minimizing overall power consumption
3Object-generated harmful factors
If different OLPC parameters are applied to separate TB groups, then interference is reduced and power consumption is optimized, but device complexity increases
Solution Approach 1:
The patent segments transport blocks into different priority groups (high priority and low priority TBs) and assigns different OLPC parameter sets to each group. This segmentation enables differentiated power control that reduces interference between priority levels while managing device complexity through systematic grouping rather than individual TB processing
Solution Approach 2:
The patent uses a unified OLPC parameter set indication field in DCI that can indicate different OLPC parameter sets for different TB groups. This multi-functional field handles both high and low priority TBs with a single signaling mechanism, reducing device complexity compared to separate signaling for each TB
Data Source
AI summary
Methods, systems, and devices for wireless communications are described in which one or more UEs may communicate with one or more base stations or transmission reception points (TRPs) based on scheduling information provided to the one or more UEs that schedule multiple transport blocks (TBs) for transmission. The multiple TBs may be divided into separate TB groups and different open loop power control parameters may be applied to the separate TB groups. Different open loop power control parameters may be identified based on a parameter set indication field that is included in scheduling information that schedules the multiple TBs. The parameter set indication field may indicate different open loop power control parameter sets with normal or power boosted parameters for different groups of TBs. In cases where multiple TRPs are used for communications, transmissions to different TRPs may have different power parameters based on the TB group and TRP.