MME-Based Small Data Management Mode for Wireless Terminals
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Solution Overview
Problem
In wireless communication systems, frequent transmission of small data leads to a significant signaling load and inefficient management of terminal states, resulting in repeated setup and release of RRC connections, which wastes resources and increases network load.
Innovation Solution
A method is introduced to manage terminal states by determining communication modes based on user equipment (UE) location and application characteristics, using Mobility Management Entity (MME) and Home Subscriber Server (HSS) to configure Small Data Management (SDM) mode, which reduces signaling load and maintains the UE in a connected state by optimizing RRC connection management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal frequently sends and receives small data, then the data transmission function is maintained, but the signaling load on the network increases significantly
Solution Approach 1:
The patent combines multiple small data transmissions into a single RRC connected state, allowing multiple small data packets to be transmitted without repeatedly establishing and releasing RRC connections. This merging approach reduces the signaling load associated with frequent connection setup and release while maintaining the ability to transmit small data efficiently.
Solution Approach 2:
The patent introduces a mechanism where the terminal enters RRC connected state in advance for small data transmission, and the network configures appropriate inactivity timers beforehand. This preliminary action prevents the need for frequent connection setup by maintaining the connected state longer than traditional approaches, thereby reducing signaling overhead.
2Loss of energy
If the base station releases RRC connection after inactivity timer expires, then radio resources are freed, but the terminal must frequently repeat connection setup for small data
Solution Approach 1:
The patent dynamically adjusts the inactivity timer value based on the type of data transmission. For small data transmissions, a longer inactivity timer is configured to maintain RRC connected state, while for large data transmissions, the traditional shorter timer is used. This dynamic adjustment optimizes both resource efficiency and connection maintenance time.
Solution Approach 2:
The patent changes the inactivity timer parameter based on the data transmission characteristics. When small data transmission is detected, the system modifies the inactivity timer to a longer value, allowing the terminal to remain in RRC connected state longer, thereby reducing the frequency of connection setup operations.
3Device complexity
If the inactivity timer value is set by the base station, then resource management is simplified, but precise conditions for terminal state are not considered
Solution Approach 1:
The patent applies different inactivity timer values for different terminal states and data types. Specifically, a first inactivity timer value is used for small data transmission scenarios, while a second (different) value is used for other scenarios. This local differentiation allows precise adaptation to specific transmission conditions while maintaining manageable system complexity.
Solution Approach 2:
The patent modifies the inactivity timer parameter based on the terminal's operational context, particularly the type of data transmission. By changing this parameter dynamically according to whether small data or large data is being transmitted, the system achieves precise state configuration without significantly increasing overall management complexity.
Data Source
AI summary
According to one embodiment of the present disclosure, the method by means of which a mobility management entity (MME) determines the communication mode of a terminal in a communication system includes the steps of: receiving, from the terminal, an access request including information on the position of the terminal; transmitting a message to a home subscriber server (HSS) on the basis of the received access request; receiving, from the HSS, specific position information for setting a first mode; comparing the information on the position of the terminal with the specific position information; and determining the communication mode of the terminal according to the result of the comparison. According to the present disclosure, the frequent transmission of small amounts of data can be supported in an efficient manner.