Network Signaling Values for Subcarrier Shift Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Legacy UEs lack the necessary hardware and software to support advanced wireless communication features, such as the 7.5 kHz subcarrier shift in TDD bands, leading to potential interference issues when connecting with access nodes that require these features.
Innovation Solution
Implementing Network Signaling (NS) functionality, where access nodes broadcast specific NS values that newer UEs can recognize and apply, while legacy UEs without corresponding logic are prevented from connecting, thereby avoiding interference by not supporting the new subcarrier configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If access nodes implement advanced features like 7.5 kHz subcarrier shift in TDD bands, then service quality and data rates are improved for newer UEs, but legacy UEs without supporting hardware/software may connect and cause interference
Solution Approach 1:
The access node performs preliminary actions by broadcasting NS values before actual data transmission. This allows newer UEs to recognize and prepare for advanced features like 7.5 kHz subcarrier shift, while legacy UEs can identify incompatibility and avoid connecting, preventing interference before it occurs.
Solution Approach 2:
NS values serve as an intermediary mechanism between access nodes and UEs. These broadcast values convey information about supported features and configurations, enabling UEs to make informed connection decisions. The NS values act as a mediator that translates complex feature sets into recognizable indicators for different UE types.
2Adaptability or versatility
If access nodes broadcast detailed configuration information to support advanced features, then newer UEs can properly utilize these features, but legacy UEs may misinterpret or ignore this information causing connection issues
Solution Approach 1:
The system applies local quality by providing different levels of information through NS values based on UE capabilities. Newer UEs receive and process detailed configuration information for advanced features, while legacy UEs encounter NS values they cannot interpret, causing them to abstain from connecting. This localized information quality ensures each UE type receives appropriate guidance without causing conflicts.
Solution Approach 2:
The access node changes the parameter of broadcast information by using NS values that encode feature support status. By modifying what information is broadcast (presence of specific NS values), the system enables newer UEs to detect and adapt to advanced features while ensuring legacy UEs can identify incompatibility and avoid problematic connections.
Data Source
AI summary
A method and system to help prevent legacy devices that do not support a service feature such as uplink-downlink subcarrier shifting from connecting with an access node on a carrier where the service feature should be applied. An example method involves use of Network Signaling (NS) values that are used for spectral emission control. Per the disclosure, the access node could broadcast an NS value that legacy device are not configured to understand but that newer devices are configured to understand as relating to both spectral emission limitation and also the service feature at issue. Responsive to the broadcast of that NS value, the legacy devices will therefore not connect with the access node, while the newer devices may connect with the access node and apply the service feature.