Location Notify Period Calculation for Mobile Terminals

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

In mobile communication systems, the increasing number of terminals, including static devices like vending machines, leads to increased processing load and network congestion due to unnecessary periodic location information transmissions, as existing techniques do not consider the communication period when setting transmission timers.

Innovation Solution

A processing device and communication system that include an analysis unit to obtain an index value representing the communication period of a terminal, and a location notify period calculation unit to set a transmission period longer than or equal to the communication period, reducing unnecessary location information transmissions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If terminals transmit location information periodically regardless of communication period, then location registration is maintained, but network load and processing load increase

Engineering Contradiction:

Improvelocation registrationVSAvoidnetwork load

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent changes the transmission period parameter dynamically based on the communication period of the terminal. By setting the location information transmission period to be equal to or longer than the communication period, the system adapts the transmission frequency to match actual communication needs, reducing unnecessary transmissions while maintaining reliable location registration.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If terminals transmit location information frequently, then location accuracy is maintained, but network congestion occurs

Engineering Contradiction:

Improvelocation accuracyVSAvoidnetwork efficiency

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The patent implements periodic transmission of location information where the period is determined by the terminal's communication period. This ensures location updates occur at appropriate intervals matching communication cycles, maintaining location accuracy while avoiding excessive transmissions that would cause network congestion.

Inventive Principle:

Principle #19Periodic action

3Device complexity

If transmission period is set independently of communication period, then location registration is simplified, but processing load on MME increases

Engineering Contradiction:

Improveregistration complexityVSAvoidprocessing load

Core Design Contradiction:

Device complexityVSPower

Solution Approach 1:

The patent makes the location information transmission period setting universal by tying it to the communication period parameter that already exists for each terminal. This multi-functional approach uses the same timing parameter for both communication scheduling and location registration, simplifying the overall system while reducing processing load on the MME.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP2741557B1Processing device, communication system, communication terminal, method for controlling terminal device, and non-transitory computer readable medium in which program is stored

Publication Date: 2017.11.08 NEC CORP

Figure 1
Figure 2
Figure 3~4

AI summary

An analysis unit 33 analyzes a message (Attach message) transmitted from an UE 10. The analysis unit 33 obtains an index value provided to the message. The index value is information set to a time longer than or equal to a communication period of a terminal device. A location notify period calculation unit 34 calculates, based on the index value obtained by the analysis unit 33, a setting time of a period for the UE 10 to transmit location information to be a value greater than the communication period.