SRS Allocation for Reciprocity Beamforming Under High Network Load
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Solution Overview
Problem
Existing SRS resource allocation methods cause telecommunication service delays and inefficiencies, particularly during high loading conditions, as not all user devices benefit from reciprocity-based beamforming due to limited resources, leading to channel decorrelation and MU-MIMO beamforming delays.
Innovation Solution
Strategically allocate SRS resources based on user traffic volume and device type, prioritizing Fixed Wireless Access (FWA) devices for MU-MIMO and Enhanced Mobile Broadband (eMBB) devices for SU-MIMO, using beam weights determined by Precoding Matrix Indicators and channel state information, enabling reciprocity-based beamforming before SRS transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SRS resources are allocated to all user devices, then all devices can benefit from reciprocity-based beamforming, but resource exhaustion occurs during high loading conditions
Solution Approach 1:
The patent applies local quality by differentiating SRS resource allocation based on device type (FWA vs. eMBB) and traffic conditions. FWA devices receive prioritized SRS resources while eMBB devices receive resources based on traffic volume thresholds, ensuring critical devices maintain beamforming benefits during high loading without exhausting system resources
2Reliability
If SRS resources are allocated during high loading, then beamforming can be maintained, but service delays increase due to resource contention
Solution Approach 1:
The patent implements preliminary action by proactively allocating SRS resources to FWA devices before high loading conditions occur, and by pre-configuring threshold-based allocation rules for eMBB devices. This advance preparation ensures beamforming resources are available when needed without causing service delays during peak load
3Reliability
If reciprocity-based beamforming is provided to all devices, then channel correlation is maintained, but system complexity increases during high loading
Solution Approach 1:
The patent applies local quality by implementing differentiated beamforming management for different device types. FWA devices receive consistent reciprocity-based beamforming while eMBB devices receive threshold-based resource allocation, simplifying the overall system management during high loading conditions while maintaining channel correlation where critical
4Measurement precision
If SRS resources are allocated periodically to all devices, then channel state information is continuously updated, but resource waste occurs when not all devices need beamforming
Solution Approach 1:
The patent implements partial action by allocating SRS resources selectively rather than to all devices. FWA devices receive periodic SRS resources while eMBB devices receive resources only when traffic volume exceeds thresholds, reducing overall resource consumption while maintaining adequate channel state information for devices that actually need beamforming
Data Source
AI summary
Methods, media, and systems are provided for Sounding Reference Signal (SRS) allocation and reciprocity-based beamforming or precoding-based beamforming in a wireless telecommunication network. In embodiments, a fixed wireless access (FWA) device, which may be connected to a base station and a user device (e.g., the user device being in an active or idle mode), is identified. For example, the FWA device can be identified based on a device identifier of the FWA device (e.g., an International Mobile Equipment Identity). In embodiments, an Enhanced Mobile Broadband device (eMBB) is also identified. SRS resource allocation to the FWA or eMBB can be determined based at least in part on a user traffic volume (e.g., corresponding to the base station and an associated coverage area). In embodiments, reciprocity-based beamforming can be provided to the FWA user device upon identifying the FWA user device. In other embodiments, the precoding-based beamforming can be provided.