Uplink Transmission Overlap Resolution via Multiplexing
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Solution Overview
Problem
In wireless communication networks, uplink transmission overlaps between user equipment (UE) with different priority communications lead to interference, resulting in increased latency as existing solutions often drop lower priority transmissions to resolve conflicts, thereby degrading network performance.
Innovation Solution
A method where user equipment (UE) detects overlapping uplink transmissions of different priority and multiplexes or punctures resource elements of the lower priority transmission with the higher priority transmission to generate a new transmission, allowing partial transmission of lower priority data without dropping it entirely, thereby reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lower priority transmissions are dropped to resolve overlap with higher priority transmissions, then interference is reduced and higher priority transmission reliability is improved, but latency increases and network performance degrades
Solution Approach 1:
The patent combines higher priority and lower priority transmissions into a single multiplexed transmission signal. The UE processes both transmissions simultaneously by mapping their respective resource elements to the same time-frequency resources, allowing both to be transmitted together without dropping either, thus reducing latency while maintaining higher priority transmission reliability through proper resource element mapping and demodulation reference signal allocation
Solution Approach 2:
The patent segments the transmission resources by assigning different resource elements to different priority transmissions within the same time-frequency slot. Higher priority transmissions are allocated specific resource elements that take precedence, while lower priority transmissions use remaining resource elements, enabling both to coexist without mutual interference and reducing overall latency
2Ease of operation
If lower priority transmissions are dropped to resolve transmission overlap, then device complexity is reduced and ease of operation is improved, but productivity decreases and network performance degrades
Solution Approach 1:
The UE autonomously performs multiplexing of higher and lower priority transmissions without requiring network intervention or complex coordination. The device self-manages resource element mapping, demodulation reference signal allocation, and transmission processing, simplifying network operation while maintaining high productivity through efficient simultaneous transmission of multiple priority levels
Solution Approach 2:
The patent creates a universal transmission framework that handles multiple priority levels within a single transmission process. The same time-frequency resources serve multiple functions by carrying both higher and lower priority transmissions through proper resource element mapping, eliminating the need for separate transmission procedures and improving overall network productivity
Data Source
AI summary
This disclosure provides systems, methods, and devices for wireless communication that support resolution of uplink (UL) transmission overlap of communication types having different priorities. In some implementations, a method of wireless communication includes determining, at a user equipment (UE), that a first scheduled UL transmission corresponding to a first communication type having a first priority overlaps with a second scheduled UL transmission corresponding to a second communication type having a second priority. The first priority is higher than the second priority. The method also includes multiplexing at least a portion of the first scheduled UL transmission with at least a portion of the second scheduled UL transmission to generate a third UL transmission. The method further includes transmitting, from the UE to a base station, the third UL transmission. Other aspects and features are also claimed and described.