Dual Connectivity Terminal Small Cell Cluster Management
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Solution Overview
Problem
In a heterogeneous cell environment, user equipment faces inefficiencies in communication due to high overhead and frequent RRC configuration message receptions, especially when moving within a coverage of multiple small cells, leading to potential disconnections and increased burden.
Innovation Solution
A method is introduced where the user equipment transmits a report message to the macro cell when receiving a downlink signal from a small cell, allowing the macro cell to manage connections with small cells based on location and movement patterns, reducing the need for frequent RRC configuration messages by scheduling connections through RRC configuration and reconfiguration messages that include addition, activation, and removal times for small cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user equipment continuously monitors and receives RRC configuration messages from multiple small cells, then connection reliability with small cells is improved, but device complexity and processing burden increase significantly
Solution Approach 1:
The patent segments the small cell coverage area into multiple zones, each served by a different small cell. The terminal device is assigned to monitor only the small cell corresponding to its current zone rather than all small cells, reducing monitoring complexity while maintaining connection reliability through targeted monitoring of relevant cells.
Solution Approach 2:
The patent introduces a macro cell as an intermediary that coordinates communication between terminal devices and small cells. The macro cell manages the assignment and reassignment of terminal devices to small cells based on location, reducing the burden on terminal devices to independently manage multiple small cell connections.
2Stability of the object's composition
If user equipment maintains connections with multiple small cells simultaneously, then communication continuity is improved, but overhead and signaling burden increase
Solution Approach 1:
The patent implements dynamic assignment of terminal devices to small cells based on real-time location information. As the terminal moves between zones, the macro cell dynamically reassigns the terminal to the appropriate small cell, maintaining communication continuity while adjusting connections adaptively rather than maintaining static multiple connections.
Solution Approach 2:
The patent uses preliminary location-based assignment where the macro cell pre-determines which small cell a terminal should connect to based on its location zone. This preliminary assignment reduces the need for frequent connection establishment and signaling overhead during normal operation, as connections are established in advance based on predicted location.
3Measurement precision
If macro cell manages all small cell connections directly, then connection management accuracy is improved, but network complexity and signaling overhead increase
Solution Approach 1:
The patent segments the network management function by dividing the coverage area into zones, each associated with a specific small cell. The macro cell manages connections by assigning terminals to zones rather than directly managing all small cell connections uniformly, reducing network complexity while maintaining accurate location-based management.
Solution Approach 2:
The patent applies local quality management where each zone has specific characteristics and the corresponding small cell is optimized for that local area. The macro cell manages connections by matching terminals to zones with appropriate local characteristics, improving connection management accuracy while reducing overall network complexity through localized management.
Data Source
AI summary
Disclosed are a communication performing method and terminal, and the method is a method by which a terminal with dual connectivity performs communication in a heterogeneous cell environment, in which: a first reporting message reporting that a downlink signal is received from a small cell in an intensity greater than a threshold value is transmitted to a macro cell; an RRC establishment message indicating a connection to a small cell cluster is received from the macro cell; connections are added to a plurality of small cells included in the small cell cluster according to additional time information included in the RRC establishment message; and the connections to the plurality of added small cells are respectively activated according to activation connection time information included in the RRC establishment message, and the small cell cluster is determined on the basis of information on a location relationship among the plurality of small cells.