Mobile Station Timeslot Feedback for Transfer Device Synchronization

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Solution Overview

Problem

Conventional communication establishment methods in transfer mode suffer from a high error rate due to the transfer device's inability to determine the timeslot used by the mobile station, leading to incorrect synchronization and communication failures, especially with an increasing number of timeslots.

Innovation Solution

A method where a mobile station transmits control information to a transfer device, including the identifier of its used timeslot and service type, allowing the transfer device to determine a synchronous transfer timeslot for communication, ensuring accurate synchronization and reducing error rates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the transfer device uses a default operating timeslot for transferring service information, then the transfer device can operate without knowing the mobile station's timeslot, but timeslot synchronization errors occur between the mobile station and transfer device

Engineering Contradiction:

Improvetransfer device operation simplicityVSAvoidtimeslot synchronization accuracy

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The mobile station feeds back its used timeslot information to the transfer device through control information. This feedback mechanism allows the transfer device to obtain accurate timeslot information from the mobile station, enabling it to determine the correct transfer timeslot and achieve proper synchronization without complex preset configurations.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The mobile station performs preliminary action by including its timeslot identifier in the control information transmitted to the transfer device before service information transfer begins. This allows the transfer device to pre-determine the appropriate transfer timeslot, ensuring synchronization is established in advance rather than relying on default settings that may be incorrect.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If the transfer device transfers service information at multiple optional timeslots, then communication flexibility increases, but the error rate for communication link establishment increases

Engineering Contradiction:

Improvetimeslot selection flexibilityVSAvoidcommunication link establishment success rate

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

Instead of the transfer device attempting to guess or try multiple timeslots, the solution inverts the approach by having the mobile station explicitly indicate its used timeslot in the control information. This allows the transfer device to deterministically select the correct transfer timeslot based on the mobile station's indication, eliminating random errors while maintaining flexibility.

Inventive Principle:

Principle #13The other way round (Inversion)

3Measurement precision

If the mobile station transmits control information including timeslot identifier to the transfer device, then timeslot synchronization accuracy improves, but communication protocol complexity increases

Engineering Contradiction:

Improvetimeslot identification accuracyVSAvoidcontrol information structure complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The solution extracts only the essential timeslot identifier information from the mobile station's communication parameters and includes it in the control information transmitted to the transfer device. This extraction approach provides the necessary synchronization accuracy without requiring the transfer device to process complex mobile station configuration details, thus maintaining relatively simple protocol structures.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentEP3041312B1Communication establishment method, mobile station and transfer device based on transfer mode

Publication Date: 2019.05.15 HYTERA COMM CORP

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AI summary

Disclosed in the present invention are a communication establishment method, mobile station and transfer device based on transfer mode. The method comprises: a first mobile station sends to the transfer device control information including the slot in the use of the first mobile station and the control signalings corresponding to different service types, in order that the transfer device determines a transfer slot and gets ready for communication according to the control signalings; and the first mobile station communicates with a target mobile station group through the transfer slot. In the present invention, the transfer device can accurately acquire the slot in the use of the mobile station, thus reducing communication error rate and solving the problem that the transfer device can not identify the slot in the use of the mobile station and can not support delayed access in the prior art. Meanwhile, the technical solution of the present invention can be compatible with existing transfer device and mobile station by the way that the mobile station sends standard control signaling information and the transfer device reconstructs and forwards the standard control signaling information.