Single Radio Dual Registration via Dynamic Spectrum Sharing

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Solution Overview

Problem

Current wireless communication systems face challenges in efficiently supporting dual registration modes between 5G NR and LTE networks, particularly in maintaining connectivity and avoiding throughput loss due to the need for tuneaway operations when using a single radio.

Innovation Solution

Implementing dynamic spectrum sharing (DSS) to enable a user equipment (UE) to determine overlapping frequency bands between 5G NR and LTE, allowing simultaneous connection and data processing without performing tuneaway operations, thereby maintaining dual registration and receive modes using a single radio.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single radio is used for both 5G NR and LTE connections, then device complexity and cost are reduced, but throughput loss occurs due to tuneaway operations

Engineering Contradiction:

Improveradio configurationVSAvoiddata throughput

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The system dynamically switches between 5G NR and LTE frequency bands based on real-time signal conditions and data requirements. The single radio dynamically tunes between overlapping frequency bands, allowing the UE to maintain active connections on both networks without requiring dual radios, thus resolving the contradiction between device complexity and throughput by making the radio configuration adaptive rather than static

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the operating frequency parameters of the single radio to overlap with both 5G NR and LTE bands. By adjusting the frequency tuning parameters and utilizing parameter-based resource allocation, the system enables the single radio to access both networks simultaneously, eliminating the need for tuneaway operations while maintaining throughput

Inventive Principle:

Principle #35Parameter changes

2Reliability

If tuneaway operations are performed to maintain dual registration, then network connectivity is maintained, but data transmission is interrupted and throughput is lost

Engineering Contradiction:

Improvenetwork connectivityVSAvoiddata transmission interruption

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary actions by pre-configuring the single radio with frequency parameters that overlap both 5G NR and LTE bands. This preliminary frequency alignment allows the radio to switch between networks without interruption, as the target frequency is already within the radio's tuned range, eliminating the need for disruptive tuneaway operations while maintaining continuous data transmission

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent ensures continuous data transmission by maintaining the radio in a state where both 5G NR and LTE frequencies are accessible simultaneously through overlapping band configuration. The useful action of data transmission continues uninterrupted as the radio can service both networks without requiring shutdown or retuning, thus eliminating transmission interruptions while maintaining dual registration reliability

Inventive Principle:

Principle #20Continuity of useful action

3Adaptability or versatility

If overlapping frequency bands are utilized for DSS, then simultaneous connection on both RATs is enabled, but frequency band selection becomes more complex

Engineering Contradiction:

Improvedual connection capabilityVSAvoidfrequency band management

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The single radio is designed with universal multi-functionality to operate across overlapping 5G NR and LTE frequency bands. By configuring the radio to universally support both RATs within the same frequency range, the system eliminates the need for separate dedicated radios for each network, enabling simultaneous dual connections while managing frequency band complexity through a unified radio architecture

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11259263B2Dual registration using dynamic spectrum sharing (DSS) in a wide area network (WAN)

Publication Date: 2022.02.22 QUALCOMM INC

AI summary

This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for implementing a dual registration mode and a dual receive mode using a single radio for wireless communications. A UE may determine that a wireless communication network supports the dual registration mode and dynamic spectrum sharing (DSS). The UE may establish a first connection with a first base station using a first radio access technology (RAT) of the wireless communication network. The UE may determine, based on one or more parameters associated with the DSS, that a second RAT of the wireless communication network has a second operating frequency band that overlaps a first operating frequency band of the first RAT. The UE may establish, via the second operating frequency band, a second connection with a second base station using the second RAT based on the dual registration mode and the DSS.