SUL Carrier Access for Reduced-Capability Terminal Uplink Coverage
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Solution Overview
Problem
The existing access method for terminals with reduced capability in the NR-light system does not adequately address the uplink coverage needs of new type of terminals, particularly those with reduced antennas, leading to insufficient uplink coverage enhancement.
Innovation Solution
A method and device that determine the type of terminal based on performance parameters to allow access over the SUL carrier, enabling terminals with specific characteristics to access the SUL carrier regardless of their location within the cell, thereby improving uplink coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a user equipment camps on a frequency and performs camp tests, then the user equipment can detect camp failure caused by network issues, but the camp test consumes system resources and may cause unnecessary reselection when the failure is not due to user equipment problems
Solution Approach 1:
Instead of having the user equipment actively perform camp tests to detect network issues, the invention inverts the approach by having the network side actively detect and notify the user equipment about camp failures. This reversal eliminates the need for continuous user equipment testing while maintaining reliable detection of network-side camp failures.
Solution Approach 2:
The invention introduces a notification mechanism as an intermediary between the network side and user equipment. The network side detects camp failures and sends notifications to user equipment, acting as a mediator that transfers failure information without requiring the user equipment to perform resource-consuming tests.
2Speed
If the camp test is performed continuously, then camp failure can be detected timely, but unnecessary reselection occurs when the failure is not caused by user equipment issues
Solution Approach 1:
The invention reverses the detection responsibility from user equipment to network side. The network side performs the detection and notifies user equipment, achieving timely detection without causing unnecessary reselection. This inversion resolves the contradiction by making the network side responsible for detecting camp failures that affect user equipment camping.
3Reliability
If the user equipment performs self-diagnosis through camp test, then user equipment issues can be identified, but network-side issues cannot be distinguished from user equipment issues
Solution Approach 1:
The invention segments the fault detection responsibility between network side and user equipment. The network side detects and notifies about network-side camp failures, while user equipment can identify its own issues. This segmentation allows both network-side and user equipment issues to be accurately identified without confusion.
Solution Approach 2:
The notification mechanism acts as an intermediary that delivers network-side failure information to user equipment. This intermediary enables user equipment to distinguish between network-side issues (received via notification) and user equipment issues (detected through self-diagnosis), expanding fault type coverage.
Data Source
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AI summary
Embodiments of the present application provide a wireless network access method and apparatus, a communication device, and a storage medium. The method comprises: determining, according to the type of a terminal, whether to allow the terminal to access a wireless network on an SUL carrier such that a terminal that must perform wireless access on an SUL carrier does perform wireless access directly on an SUL carrier, or performs wireless access on an SUL carrier under more relaxed conditions compared to other terminals. The present invention thus enhances the uplink coverage capability of terminals that must perform access on an SUL carrier.