Unified DCI Scheduling for Full-Duplex UE Self-Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 5G NR communication systems face inefficiencies in downlink and uplink data DCI triggering for full-duplex user equipments (UEs), leading to interference and self-interference issues due to concurrent transmission and reception on the same component carrier.
Innovation Solution
A method and apparatus for wireless communication that enables full-duplex UEs to transmit a RRC configuration message indicating their capability, allowing for concurrent transmission and reception of uplink and downlink channels on the same component carrier through a unified DCI format message, incorporating merged fields for both channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex capability is enabled for concurrent transmission and reception on the same component carrier, then communication efficiency and resource utilization are improved, but interference and self-interference issues arise
Solution Approach 1:
The patent segments the frequency spectrum by introducing frequency separation between uplink and downlink channels. The gNodeB configures different frequency resources for uplink and downlink transmissions, allowing full-duplex operation while minimizing self-interference through frequency division. This segmentation enables concurrent transmission and reception without complete frequency overlap.
Solution Approach 2:
The patent introduces a frequency separator as an intermediary mechanism between the uplink and downlink transmission paths. By configuring frequency separation parameters in the RRC message, the system creates a protective boundary that reduces self-interference while maintaining full-duplex capability. This intermediary frequency separation allows both transmission and reception to occur simultaneously with reduced harmful interference.
2Adaptability or versatility
If separate DCI format messages are used for downlink and uplink scheduling, then scheduling flexibility is maintained, but signaling overhead and processing complexity increase
Solution Approach 1:
The patent merges the downlink and uplink scheduling information into a single unified DCI format message. This combined DCI includes separate fields for downlink resource allocation and uplink resource allocation, allowing the gNodeB to schedule both directions simultaneously through one signaling message. This merging reduces the number of separate DCI messages the UE must process while maintaining scheduling flexibility for both uplink and downlink.
Solution Approach 2:
The unified DCI format message serves multiple functions by simultaneously conveying downlink scheduling information, uplink scheduling information, and full-duplex configuration parameters. This multi-functional DCI structure eliminates the need for separate DCI messages for different directions, reducing processing complexity while maintaining comprehensive scheduling control.
Data Source
AI summary
In an aspect, the present disclosure includes a method, apparatus, and computer readable medium for wireless communications for transmitting, by a UE to a network entity, a radio resource control (RRC) configuration message indicating a full-duplex capability of the UE; receiving, by the UE from the network entity, a downlink control information (DCI) message, wherein the DCI message enables concurrent transmission on an uplink channel and reception on a downlink channel by the UE; and communicating, between the UE and the network entity, based on the DCI message.