Base Station Resource Scheduling for Edge UE Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In LTE systems, the use of virtual multiple-input multiple-output (VMIMO) technology increases inter-cell interference, leading to a decline in throughput and performance of edge user equipment (UE), as the number of paired layers increases, especially in scenarios with limited spectrum resources.
Innovation Solution
A resource scheduling method that differentiates between edge UE and non-edge UE by using a dedicated frequency resource for edge UE, where VMIMO pairing is not allowed, and a public frequency resource for both edge and non-edge UE, with priority scheduling on the dedicated resource for edge UE to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If VMIMO technology is used to pair multiple users on one time-frequency resource, then system capacity and throughput are improved, but inter-cell interference increases and edge UE performance deteriorates
Solution Approach 1:
The frequency resource is segmented into public frequency resource and dedicated frequency resource. Public frequency resource is used for VMIMO pairing to improve system capacity, while dedicated frequency resource is allocated to edge UE to avoid interference. This segmentation allows the system to simultaneously achieve high throughput for both cell-center and edge users.
Solution Approach 2:
Different quality of service is provided to different user groups through local resource allocation. Edge UE receive dedicated frequency resources with protected quality, while cell-center users utilize public frequency resources for high-capacity VMIMO transmission. This local quality differentiation resolves the contradiction between system capacity and edge user performance.
2Productivity
If the quantity of paired layers in VMIMO increases, then system throughput is improved, but the number of interference sources increases and interference suppression effect deteriorates
Solution Approach 1:
Edge UE are extracted from the VMIMO pairing process and allocated dedicated frequency resources separately. This removes edge UE from the interference environment created by multi-user pairing, allowing the system to increase paired layers for cell-center users without compromising edge user performance.
Solution Approach 2:
Dedicated frequency resource acts as an intermediary protection mechanism between the VMIMO system and edge UE. This intermediary resource pool isolates edge users from interference while maintaining their connectivity, enabling the system to operate VMIMO at higher capacities without degrading edge user experience.
3Reliability
If dedicated frequency resource is allocated to edge UE, then edge UE performance is improved, but public frequency resource for VMIMO pairing is reduced
Solution Approach 1:
The public frequency resource serves multiple functions: it is used for VMIMO pairing to achieve high system capacity while also being accessible to edge UE when needed. The dedicated frequency resource provides guaranteed service for edge UE. This multi-functional resource allocation resolves the contradiction between reliability and productivity.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
Embodiments of the present invention provide a resource scheduling method, a base station, and user equipment. The method includes: receiving a scheduling request from user equipment UE; determining a scheduling type of the UE, where the scheduling type is edge UE or non-edge UE; scheduling, by a base station, a frequency resource for the UE according to the scheduling type of the UE and a frequency resource configuration of a serving cell of the UE; and sending, to the UE, scheduling information used to indicate the frequency resource scheduled by the base station for the UE, where the frequency resource configuration includes a public frequency resource and a dedicated frequency resource; virtual multiple-input multiple-output VMIMO pairing is allowed on the public frequency resource, and the public frequency resource is capable of being used to schedule edge UE and non-edge UE; and VMIMO pairing is not allowed on the dedicated frequency resource, and the dedicated frequency resource is capable of being used to schedule only edge UE. According to the embodiments of the present invention, a scheduling type of UE is determined; therefore, edge UE is preferentially scheduled on a configured dedicated frequency resource, and VMIMO pairing is not performed, thereby improving a throughput and performance of the edge UE while a throughput of an entire VMIMO system is ensured.