UE Uplink Resource Mapping for TTI Collision Avoidance
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Solution Overview
Problem
In the LTE system, resource collisions between 1 ms TTI and short TTI occur, leading to inaccurate service data transmission due to the UE's inability to process and transmit data simultaneously using overlapping resources.
Innovation Solution
A method where the UE acquires attribute information of service data packets, including time delay requirements, and maps them to uplink resources based on these requirements, allowing for simultaneous processing of different TTIs by determining suitable transmission time delays for scheduled resources, thereby ensuring accurate transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE receives both 1 ms TTI and short TTI uplink resources simultaneously, then resource utilization is improved, but resource collision occurs leading to transmission inaccuracy
Solution Approach 1:
The patent changes the parameter of transmission time delay by determining a suitable transmission time delay for the scheduled resource based on the collision status between 1 ms TTI and short TTI resources. When collision is detected, the UE adjusts the transmission timing to resolve the conflict, thereby maintaining both high resource utilization and transmission accuracy
Solution Approach 2:
The patent introduces dynamic resource selection where the UE can dynamically switch between 1 ms TTI resources and short TTI resources based on real-time collision detection. The UE determines whether to transmit on 1 ms TTI resources or short TTI resources by checking for resource overlap and adjusting transmission parameters accordingly, making the system adaptive to varying resource availability and service requirements
2Adaptability or versatility
If the UE transmits data on overlapping 1 ms TTI and short TTI resources, then service coverage is improved, but transmission accuracy deteriorates due to UE processing limitations
Solution Approach 1:
The patent segments the uplink transmission resources into distinct 1 ms TTI resources and short TTI resources, and further segments the data transmission by determining which segment to use based on collision detection. The UE divides the transmission decision into separate evaluation steps: first detecting resource overlap, then selecting appropriate resources, and finally transmitting on the selected resources, thereby avoiding the precision loss that would occur from attempting simultaneous transmission on overlapping resources
Solution Approach 2:
The patent performs preliminary resource collision detection before actual data transmission. The UE determines the collision status between 1 ms TTI and short TTI resources in advance, and based on this preliminary assessment, selects the appropriate transmission resources and adjusts transmission parameters before the actual transmission occurs, ensuring transmission accuracy is maintained while still providing broad service coverage
Data Source
AI summary
A service data transmission method, a UE and a network side device are provided. The service data transmission method includes: upon receipt of a scheduling command for an uplink resource from a network side device, acquiring attribute information of to-be-transmitted service data packets, the attribute information of the to-be-transmitted service data packets including a time delay; and mapping the to-be-transmitted service data packets to the uplink resource in accordance with a time delay requirement on the to-be-transmitted service data packets, and transmitting the to-be-transmitted service data packets on the uplink resource.