Priority-Based Transmission Power Allocation for Wireless Channel Collision Avoidance
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Solution Overview
Problem
Current wireless communication systems, particularly in LTE, face challenges in efficiently managing transmission power when multiple channels, such as PRACH, PUCCH, and PUSCH, are transmitted simultaneously, leading to power limitations and potential collisions in scenarios like initial access, time adjustment, and handovers.
Innovation Solution
Implementing a method to prioritize transmission power between channels, allowing simultaneous transmission of PRACH and other channels by allocating requisite power based on priority, and using specific resource sets or formats to indicate ACK/NACK, thereby avoiding collisions and optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transmission power is allocated to multiple channels simultaneously, then system capacity and service quality are improved, but power limitations and channel collisions occur
Solution Approach 1:
The patent changes the power allocation parameter from equal distribution to priority-based distribution. By assigning different priority levels to different channels (e.g., PRACH gets higher priority than PUSCH), the system dynamically adjusts power parameters to prevent collisions while maintaining high system capacity. This is achieved through the power allocation module that calculates power based on channel priority and current transmission needs.
Solution Approach 2:
The patent applies local quality by providing different power allocation strategies for different channels based on their specific requirements. Critical channels like PRACH (physical random access channel) receive guaranteed power levels to ensure successful access, while other channels like PUSCH (physical uplink shared channel) receive remaining power. This localized optimization ensures that each channel gets appropriate power quality according to its function.
2Reliability
If transmission power is increased for access channel, then access reliability is improved, but power available for other channels is reduced
Solution Approach 1:
The patent segments the total transmission power into different portions allocated to different channels based on priority. The power allocation module divides power such that critical access channels receive sufficient power for reliable transmission, while remaining power is allocated to other channels. This segmentation ensures that access channel reliability is maintained without completely depleting power for other transmissions.
Solution Approach 2:
The patent implements dynamic power allocation where power distribution adjusts based on current system conditions, channel priorities, and transmission requirements. Rather than fixed power allocation, the system dynamically recalculates power distribution to balance access channel reliability with power availability for other channels, optimizing overall system performance under varying conditions.
3Ease of operation
If simultaneous transmission of multiple channels is enabled, then service quality and user experience are improved, but power management complexity increases
Solution Approach 1:
The patent creates a universal power allocation framework that handles multiple channel types (PRACH, PUCCH, PUSCH, etc.) through a single priority-based allocation mechanism. The power allocation module serves multiple functions: calculating required power, determining channel priorities, allocating power proportionally, and preventing collisions. This multi-functional approach enables simultaneous transmission of multiple channels while managing power through a unified system rather than separate controls for each channel.
Data Source
AI summary
A method, apparatus, and computer program product for wireless communication are provided in which a transmission power is prioritized between an access channel and a second channel. Additionally, the access channel and the second channel are transmitted simultaneously. Each of the access channel and the second channel are transmitted at a transmission power determined based on the priority.