Signalling Time Frequency Resources Allocation Wireless

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Solution Overview

Problem

In wireless communications networks, the limited size of frame fields for signalling time and frequency resources restricts the representation of all possible time and frequency resource sequences, leading to reduced capacity and increased signalling overhead, especially when fewer than 80 bits are required to represent 80 time and frequency resource sequences.

Innovation Solution

A method where an access point allocates and signals time and frequency resources using a frequency occurrence descriptor instead of a traditional frequency allocation descriptor, employing differential bitmapping and predetermined sequencing rules to reduce signalling overhead and enhance transmission diversity, allowing mobile terminals to determine associated time resources for each transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If traditional frequency allocation descriptor is used to signal time and frequency resources, then complete resource allocation information can be provided, but signalling overhead increases and frame field size requirements increase

Engineering Contradiction:

Improveresource allocation information completenessVSAvoidsignalling overhead

Core Design Contradiction:

Loss of informationVSQuantity of substance

Solution Approach 1:

The patent extracts only the essential frequency occurrence information from the complete frequency allocation descriptor, signalling merely how many times each frequency resource is used rather than the full allocation details. This extracted subset of information is sufficient for mobile terminals to determine actual resource usage when combined with predefined sequencing rules, thereby reducing signalling overhead while maintaining resource allocation completeness

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent enables mobile terminals to self-determine the complete frequency allocation by combining the received frequency occurrence descriptor with predefined frequency sequencing rules. Instead of the access point signalling all allocation details, the mobile terminal autonomously reconstructs the full resource allocation information through local processing, reducing the burden on signalling channels

Inventive Principle:

Principle #25Self-service

2Quantity of substance

If frequency occurrence descriptor with differential bitmapping is used, then signalling overhead is reduced, but complexity of resource determination increases

Engineering Contradiction:

Improvesignalling overheadVSAvoidresource determination complexity

Core Design Contradiction:

Quantity of substanceVSDevice complexity

Solution Approach 1:

The patent changes the representation parameters of frequency allocation information from explicit allocation descriptors to occurrence-based descriptors using differential bitmapping. This parameter transformation compresses the signalling data by representing frequency resource usage patterns through occurrence counts and differential encoding, reducing signalling overhead while the predefined sequencing rules keep the determination process manageable

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If more time and frequency resources are allocated to represent all possible sequences, then resource allocation flexibility increases, but signalling capacity requirements increase

Engineering Contradiction:

Improveresource allocation flexibilityVSAvoidsignalling data amount

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent creates a universal frequency occurrence descriptor that can represent multiple different frequency allocation scenarios through a single signalling mechanism. The same occurrence descriptor format can describe various resource allocation patterns by combining occurrence counts with predefined sequencing rules, providing multi-functionality that maintains allocation flexibility while using consistent, compact signalling

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10075967B2Method for signaling time and frequency resources allocation in wireless communication system

Publication Date: 2018.09.11 MITSUBISHI ELECTRIC CORP

AI summary

For performing K individual transmissions between an access point managing a cell of a wireless communications network to plural mobile terminals via time and frequency resources from amongst a predefined set of candidate time and frequency resources on a per frame period basis, one time and frequency resource being allocated to each one of the K individual transmissions in a considered frame period, the access point: obtains a frequency allocation descriptor F indicating which frequency resource is allocated in the considered frame period to each one of the K individual transmissions; obtains a frequency occurrence descriptor G indicating how many times each candidate frequency resource is used for performing the K individual transmissions in the considered frame period; signals the frequency occurrence descriptor G in said cell; and enables transmitting data for the K individual transmissions in accordance with the frequency allocation descriptor F and a predetermined frequency sequencing rule.