Radio Node Synchronization Group Membership for Interference Control
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Solution Overview
Problem
In wireless local area optimized (WOLA) radio systems, conventional network planning is inadequate due to small radio cells and high access points, leading to interference issues, where existing methods require full synchronization and constant monitoring to manage interference, which is resource-intensive and inefficient.
Innovation Solution
A method where radio nodes determine membership in a common synchronization group by comparing single group identities and adjust transmission parameters to control unwanted emissions into neighboring channels, either allowing or limiting sinc leakage based on synchronization status, without full synchronization or constant monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If full synchronization and constant monitoring are used to manage interference, then interference management reliability is improved, but resource consumption and system complexity increase
Solution Approach 1:
The patent segments the network into synchronization groups identified by group IDs. Nodes only need to synchronize and monitor nodes within their own group, rather than performing full network-wide synchronization. This segmentation reduces the computational burden and resource consumption while maintaining reliable interference management within each group.
Solution Approach 2:
The patent applies local quality by making synchronization requirements local rather than global. Nodes compare group IDs to determine if they belong to the same synchronization group, and only perform full synchronization procedures with nodes in the same group. This local approach reduces overall resource consumption while maintaining interference management reliability where it matters most.
2Ease of operation
If conventional network planning is used, then network management simplicity is maintained, but interference control effectiveness deteriorates due to small cell size and high access point density
Solution Approach 1:
The patent performs preliminary action by pre-organizing nodes into synchronization groups with assigned group IDs before interference management begins. This preliminary organization allows nodes to quickly determine their synchronization relationships by simply comparing group IDs, eliminating the need for complex real-time network planning while effectively controlling interference in dense deployments.
3Measurement precision
If synchronization group membership determination is implemented, then interference control precision is improved, but measurement and detection complexity increases
Solution Approach 1:
The patent changes the parameter used for synchronization determination from complex timing and phase measurements to simple group ID comparison. By assigning group IDs to synchronization groups and having nodes compare these IDs, the system achieves precise interference control while dramatically reducing the difficulty of detecting and measuring synchronization status.
Data Source
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AI summary
In accordance with an example embodiment of the present invention, an apparatus comprises a transceiver configured to receive a transmission signal from a radio node; a processor configured to, based on the received transmission signal, determine membership of the apparatus and the radio node in a common synchronization group and based at least in part on the determination, adjusting at least one transmission parameter.