Full Duplex Beam Pair Scheduling via DCI
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently scheduling full duplex uplink and downlink communications, leading to increased latency and reduced spectrum efficiency due to self-interference and complex resource allocation.
Innovation Solution
The implementation of full duplex beam pairs, where a user equipment (UE) and base station use dedicated control information (DCI) transmissions to schedule uplink and downlink communications using separate or paired beams, minimizing self-interference and optimizing resource allocation across multiple component carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full duplex transmission mode is used to simultaneously schedule uplink and downlink communications, then spectrum efficiency is improved, but self-interference increases and complicates resource allocation
Solution Approach 1:
The patent segments the full duplex transmission by introducing separate beam pairs for uplink and downlink communications. The base station uses a first beam pair for receiving uplink signals and a second beam pair for transmitting downlink signals, physically separating the interfering signals through spatial segmentation. This allows simultaneous uplink and downlink transmissions while minimizing self-interference between the two directions.
2Reliability
If full duplex beam pairs are implemented to minimize self-interference, then communication reliability is improved, but device complexity increases due to multiple beam management requirements
Solution Approach 1:
The patent implements a unified beam pair indication mechanism where a single DCI (Downlink Control Information) message from the base station simultaneously indicates both the first beam pair for uplink and the second beam pair for downlink. This multi-functional indication approach consolidates what would otherwise require separate beam management procedures, reducing signaling overhead and operational complexity while maintaining reliable full duplex communication.
3Measurement precision
If separate beam pairs are used for uplink and downlink to reduce self-interference, then signal quality is improved, but resource allocation complexity increases
Solution Approach 1:
The patent merges the resource allocation for uplink and downlink into a single DCI transmission. The base station sends one DCI message that contains resource allocation information for both the uplink communication (using the first beam pair) and the downlink communication (using the second beam pair). This combining approach simplifies the scheduling process compared to handling separate allocations, while still maintaining the signal quality benefits of using distinct beam pairs.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, in a full duplex transmission mode, at least one downlink control information (DCI) transmission for scheduling an uplink communication and a downlink communication, wherein the at least one DCI transmission indicates a full duplex beam pair including a first beam associated with the uplink communication and a second beam associated with the downlink communication. The UE may communicate with at least one wireless communication device based at least in part on the uplink communication and the downlink communication. Numerous other aspects are described.