Uplink Collision Handling via Payload Merging in 5G
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Solution Overview
Problem
5G wireless communication systems face challenges in efficiently handling collisions between uplink transmissions, particularly in systems that support multiple use cases like URLLC and eMBB, which can lead to latency and performance issues.
Innovation Solution
The method involves determining overlaps between uplink transmission channels, generating a combined uplink transmission payload that includes portions of both transmissions, and transmitting this payload on either channel, thereby resolving collisions and improving spectral efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate uplink transmission channels are allocated for different uplink transmissions, then transmission reliability is improved, but channel resource waste occurs when collisions happen
Solution Approach 1:
The patent combines multiple uplink transmission channels into a single shared channel resource. When a collision is detected between uplink transmissions, the system dynamically merges the colliding channels and transmits both payloads through the combined channel, thereby eliminating channel resource waste while maintaining transmission reliability.
2Productivity
If collision handling techniques are implemented, then spectral efficiency is improved, but system complexity increases
Solution Approach 1:
The patent implements preliminary collision detection before uplink transmission occurs. By detecting potential collisions in advance and pre-configuring combined channel resources, the system avoids the need for complex real-time collision resolution mechanisms, thereby improving spectral efficiency while controlling system complexity.
3Speed
If uplink transmissions are transmitted simultaneously on overlapping channels, then transmission speed is improved, but collision latency increases
Solution Approach 1:
The patent employs feedback mechanisms where the base station monitors uplink channel usage and provides collision information back to user equipment. This feedback enables the system to identify collisions, combine affected channels, and retransmit payloads efficiently, thereby reducing collision latency while maintaining high transmission speed.
Data Source
AI summary
In an aspect, a UE determines whether there is an overlap between a first uplink transmission channel allocated for transmission of a first uplink transmission and a second uplink transmission channel allocated for transmission of second uplink transmission. The UE generates a combined uplink transmission payload in response to a determination that there is the overlap, wherein the combined uplink transmission payload includes at least a portion of the first uplink transmission and at least a portion of the second uplink transmission. The UE transmits the combined uplink transmission payload on either the first uplink transmission channel or the second uplink transmission channel. A base station receives the combined uplink transmission payload transmitted by the UE.