Uplink Resource Dynamic Multiplexing for 5G eMBB URLLC Conflict
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Solution Overview
Problem
In 5G communication systems, the coexistence of eMBB and URLLC services leads to resource conflicts and low resource utilization efficiency due to overlapping uplink resources, resulting in degraded quality of service and transmission performance.
Innovation Solution
The proposed solution involves dynamic multiplexing of uplink resources between eMBB and URLLC terminal devices, where the first terminal device uses a fourth uplink resource that is a subset of the intersection between its own uplink resource and the second terminal device's uplink resource, allowing for efficient utilization and avoiding interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If time division multiplexing is performed on uplink resources for eMBB and URLLC services, then resource allocation is simplified, but URLLC service latency increases
Solution Approach 1:
The patent applies dynamic multiplexing where terminal devices can flexibly select from multiple uplink resources (first uplink resource and second uplink resource) based on real-time needs. The network device dynamically allocates resources through indication information, allowing URLLC services to use low-latency resources when needed while eMBB services use available resources, thereby reducing URLLC latency without fixing rigid time division.
Solution Approach 2:
The patent changes the resource allocation parameters by introducing multiple uplink resources with different characteristics (first uplink resource and second uplink resource) and allowing dynamic selection based on service type and urgency. This parameter flexibility enables URLLC services to achieve lower latency by selecting appropriate resources rather than being constrained by fixed time division.
2Device complexity
If frequency division multiplexing is performed on uplink resources for eMBB and URLLC services, then resource allocation is simplified, but resource utilization efficiency decreases when no URLLC service is present
Solution Approach 1:
The patent implements dynamic resource selection where terminal devices can choose between first uplink resource and second uplink resource based on real-time service requirements. When URLLC services are present, they can use the first uplink resource; when absent, eMBB services can utilize the second uplink resource, thereby improving overall resource utilization efficiency compared to fixed frequency division.
Solution Approach 2:
The patent makes uplink resources multi-functional by allowing the same resource to be used for different services (eMBB and URLLC) depending on dynamic allocation. The network device can allocate either the first uplink resource or the second uplink resource to different terminal devices based on current service needs, making the resource system more versatile and efficient.
3Speed
If preconfiguration of UL grant free resources is used, then transmission latency is reduced, but reliability of resource allocation decreases
Solution Approach 1:
The patent introduces feedback mechanisms where terminal devices send indication information to the network device about their uplink transmission needs. The network device receives this feedback and dynamically adjusts resource allocation by selecting between first uplink resource and second uplink resource, thereby maintaining high reliability through continuous communication while preserving low latency through rapid resource selection.
Data Source
AI summary
In an uplink information receiving method, a first terminal device receives first indication information sent by a network device, where the first indication information indicates a first uplink resource; and the first terminal device sends uplink information to the network device on a fourth uplink resource, where the fourth uplink resource is a resource other than a second uplink resource in the first uplink resource, the second uplink resource is a subset of a third uplink resource, and the third uplink resource is an intersection between a fifth uplink resource configured for a second terminal device and the first uplink resource.