Coordinated Beamforming for Multi-Base Station Synchronization
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Solution Overview
Problem
Devices operating in overlapping service areas of multiple neighboring beam-forming base stations face synchronization challenges and increased latency due to the reuse of synchronization sequences, which complicates coordinated communication.
Innovation Solution
Implementing coordinated beamforming techniques that utilize auxiliary signaling information and beam tracking algorithms to synchronize devices with multiple base stations, allowing simultaneous communication with both stations through joint beamforming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the same synchronization sequences are reused for registration with multiple base stations, then device complexity is reduced, but synchronization accuracy and reliability deteriorate in overlapping coverage areas
Solution Approach 1:
The patent divides the synchronization sequence into two distinct parts: a common synchronization sequence used for initial registration with any base station, and a unique identification sequence specific to each base station. This segmentation allows devices to first establish basic synchronization using the common sequence, then identify the specific base station using the unique sequence, thereby maintaining low device complexity while improving synchronization reliability in overlapping areas.
Solution Approach 2:
The patent introduces an intermediary identification sequence that mediates between the common synchronization sequence and the base station-specific identification. This intermediary element allows devices to distinguish between multiple base stations using the same common synchronization sequence, resolving the ambiguity in overlapping coverage areas without requiring completely different synchronization sequences for each base station.
2Productivity
If coordinated beamforming is implemented across multiple base stations, then quality of service and throughput are improved, but device complexity and synchronization difficulty increase
Solution Approach 1:
The patent applies preliminary action by having devices perform initial synchronization and base station identification before engaging in coordinated beamforming operations. The device first uses the common synchronization sequence to establish basic connection, then identifies the specific base station using the unique sequence, and only after this preliminary identification does the coordinated beamforming process begin. This staged approach reduces the complexity burden during the actual coordinated communication.
Solution Approach 2:
The patent implements feedback mechanisms where base stations transmit their unique identification sequences and synchronization information to devices in overlapping areas. This feedback allows devices to adapt their synchronization parameters based on the specific base station they are communicating with, enabling coordinated beamforming while managing complexity through informed decision-making based on received feedback information.
Data Source
AI summary
Wireless communication facilitated with beamforming between devices and base stations, including when one or more devices are located within overlapping areas or ranges of two or more base stations, is contemplated. The beamforming may be implemented according to a non-joint beamforming methodology and/or a joint beamforming methodology, optionally as determined according to uplink/downlink demands and/or communications between multiple base stations.