Grouping Terminals for Mobility Management in Mobile Networks
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Solution Overview
Problem
In mobile communication systems, users with multiple portable devices experience inefficiencies due to uncoordinated mobility measurements across devices, leading to increased signaling overhead and mobility information reporting.
Innovation Solution
A method for grouping terminals by mobility and designating a leader terminal to manage and report mobility information, allowing simultaneous reception and transmission of control signals, thereby reducing overhead and optimizing signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mobility management is performed individually for each terminal device, then each terminal can be managed independently, but signaling overhead and mobility information report overhead increase significantly
Solution Approach 1:
The patent merges multiple terminals with identical mobility characteristics into a single mobility group. The network device performs mobility management (including location updates and tracking area updates) on the mobility group as a whole rather than individually for each terminal. This combining approach maintains reliable mobility management while significantly reducing signaling overhead, as the same mobility information needs to be transmitted only once for the entire group instead of separately for each terminal.
2Reliability
If mobility management is performed individually for each terminal device, then each terminal receives independent control signals, but control signal overhead increases
Solution Approach 1:
The patent combines control signal transmission for multiple terminals in a mobility group into a single group-based control signal. The network device transmits control signals (such as paging messages) addressed to the mobility group rather than sending separate control signals to each individual terminal. This merging approach ensures that all terminals in the group receive the control signal simultaneously, maintaining reliable control signal delivery while reducing control signal overhead.
3Measurement precision
If each terminal performs independent location updates, then location accuracy is maintained for each device, but signaling overhead increases
Solution Approach 1:
The patent merges location update operations for terminals with identical mobility characteristics into a single group-based location update. When terminals form a mobility group, the network device performs location updates for the entire group based on the mobility information of the group as a whole, rather than requiring each terminal to perform independent location updates. This approach maintains location accuracy for all terminals in the group while significantly reducing the signaling overhead associated with repeated location update messages.
4Measurement precision
If multiple terminals are managed separately, then individual terminal mobility is tracked independently, but system complexity increases
Solution Approach 1:
The patent merges the management of multiple terminals with identical mobility characteristics into a unified mobility group structure. Instead of maintaining separate management states for each terminal, the network device manages the mobility group as a single entity with shared mobility information. This merging reduces system complexity by eliminating redundant management structures while maintaining precise mobility tracking for all terminals in the group through the group's collective mobility data.
Data Source
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AI summary
The present invention relates to a method and a device that control signals for a plurality of terminals possessed by the same user. More particularly, a method of controlling signals for a plurality of terminals using a mobility management entity (MME) according to an embodiment of the present invention is characterized by including the steps of: setting terminals with the same subscriber codes and the same mobility as grouping terminals; and transmitting group signals on the grouping terminals to a base station. According to the present invention, the following advantages are realized: of enabling the prevention of waste in having to report mobility-related information on each terminal and being able to simultaneously transmit grouping or other signals to all terminals that are in a group in a network.