Beam Refinement for UE-Dedicated SIB1 Access Signaling
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing beamforming for user equipment (UE)-dedicated access information, particularly in scenarios involving UE-dedicated system information block type 1 (SIB1) and random access channels (RACH), which can lead to suboptimal communication performance.
Innovation Solution
The proposed solution involves a beam management procedure that includes transmitting and receiving reference signals based on synchronization signal blocks (SSBs) and random access channels (RACH) prior to the exchange of UE-dedicated SIB1, optimizing beam refinement for improved communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beamforming is used for UE-dedicated SIB1 transmission, then communication efficiency is improved, but beam management complexity increases
Solution Approach 1:
The patent performs beam refinement procedures before transmitting UE-dedicated SIB1. The network node transmits reference signals and receives measurement reports from UE in advance, establishing optimized beams prior to actual data transmission. This preliminary beam management reduces complexity during the actual SIB1 transmission phase while maintaining high communication efficiency.
Solution Approach 2:
The UE autonomously measures reference signals transmitted by the network node and generates measurement reports without requiring complex network coordination. The UE self-performs beam quality assessment and feedback, reducing the overall system complexity while enabling efficient beamformed communication for UE-dedicated SIB1.
2Reliability
If reference signals are transmitted for beam management, then signal quality is improved, but transmission time is increased
Solution Approach 1:
The patent transmits reference signals selectively for beam management purposes rather than continuously. Reference signals are transmitted in specific time instances sufficient for UE to perform beam measurement and reporting, avoiding excessive transmission time while ensuring adequate signal quality assessment for optimized UE-dedicated SIB1 transmission.
3Reliability
If beam refinement is performed before SIB1 transmission, then access process performance is improved, but processing overhead is increased
Solution Approach 1:
The patent divides the access process into distinct phases: beam refinement phase (with reference signal transmission and measurement) and SIB1 transmission phase. This segmentation allows beam management operations to be performed separately and efficiently, reducing processing overhead during the critical SIB1 transmission while maintaining improved access process performance through prior beam optimization.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may receive, prior to transmitting a user equipment dedicated (UE-dedicated) system information block type 1 (SIB1) associated with a user equipment (UE), a random access channel (RACH) from the UE. The network node may transmit, prior to transmitting the UE-dedicated SIB1 and based at least in part on receiving the RACH, a reference signal that is based at least in part on a beam management procedure. Numerous other aspects are described.