Cell Shaping Indication Signaling for Wireless Network Capacity
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Solution Overview
Problem
In wireless communication systems, existing technologies face challenges in efficiently managing cell coverage and load distribution, particularly in active antenna systems, where cell shaping and un-shaping are dynamic and require coordination among eNodeBs to optimize capacity and prevent handover failures.
Innovation Solution
A method for transmitting cell shaping and un-shaping indications between eNodeBs in an active antenna system, allowing eNodeBs to notify neighbors of planned or completed cell adjustments, and rejecting handover requests if cell un-shaping is in progress to maintain optimal coverage and load distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cell shaping is dynamically adjusted to adapt cell edges to load demand, then network capacity and load distribution are optimized, but handover failures may occur due to coverage changes
Solution Approach 1:
The system performs preliminary actions by notifying neighboring eNodeBs of planned cell shaping adjustments before they are executed. This advance notification allows neighboring cells to prepare for coverage changes, ensuring seamless handovers and preventing connection failures that would otherwise occur due to sudden coverage modifications.
Solution Approach 2:
The system implements feedback mechanisms by monitoring cell shaping execution status and notifying neighbors when shaping is completed. This feedback loop ensures that all network elements have current information about cell coverage states, enabling reliable handover decisions and maintaining connection stability during dynamic cell shaping operations.
2Adaptability or versatility
If cell shaping adjustments are made frequently to optimize load distribution, then network flexibility and adaptability improve, but system complexity and coordination overhead increase
Solution Approach 1:
The system segments cell shaping operations into distinct notification phases: planned shaping notifications sent before adjustments, and completion notifications sent after adjustments. This segmentation of information transmission simplifies the coordination protocol, making the system more manageable and less complex while maintaining high adaptability to load changes.
3Shape
If cell un-shaping is performed to restore original coverage, then coverage optimization is achieved, but handover requests may fail during the transition period
Solution Approach 1:
Before executing cell un-shaping operations, the system sends advance notifications to neighboring eNodeBs about the planned coverage restoration. This preliminary action allows neighboring cells to adjust their handover parameters and prepare for the incoming coverage changes, ensuring that handover requests remain reliable throughout the un-shaping transition period.
Solution Approach 2:
The system provides feedback by notifying neighboring eNodeBs when cell un-shaping is completed, confirming that original coverage has been restored. This feedback ensures that the network has accurate, up-to-date information about cell coverage states, maintaining handover reliability during and after the un-shaping process.
Data Source
AI summary
A method and apparatus for transmitting a cell shaping/un-shaping indication in a wireless communication system is provided. A first eNodeB (eNB) transmits a cell shaping/un-shaping indication which indicates cell shaping/un-shaping of a cell, managed by the first eNB, in an active antenna system (AAS) to a second eNB. The cell shaping means that main coverage of the cell is maintained unchanged but an edge of the cell can be adapted to load demand. The cell un-shaping means that coverage of the cell goes back to original coverage.