NR Signaling with Preconfigured Parameters for Fast Channel Switching
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Solution Overview
Problem
In New Radio (NR) communications, the channel switch delay during mobility transitions is significant due to higher-layer signaling interactions, leading to communication interruptions and reduced success rates, and existing solutions like Dual Active Protocol Stack (DAPS) increase terminal complexity.
Innovation Solution
A method and apparatus for signaling that allows a terminal to maintain multiple channels or signals within a single serving cell framework, reducing channel switch delay and complexity by using a unified higher-layer protocol stack, enabling transparent switching between different parameters or combinations of parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional channel switch method is used, then mobility measurement can be performed, but channel switch delay is large due to higher-layer signaling interactions
Solution Approach 1:
The patent pre-configures multiple first-type parameters (physical cell identifier, mobility measurement reference signal, sequence parameter of synchronization signal) corresponding to different target elements (serving cell, BWP, TCI state) before channel switching is needed. When channel switch is required, the terminal can immediately activate a pre-configured parameter combination without undergoing complex higher-layer signaling interactions, thus reducing channel switch delay to near-zero.
2Reliability
If Dual Active Protocol Stack (DAPS) is used, then channel switch success rate is improved, but terminal complexity increases
Solution Approach 1:
The patent merges multiple channels or signals corresponding to different first-type parameters under a single serving cell framework. The terminal maintains only one higher-layer protocol stack while being able to simultaneously receive or transmit channels/signals corresponding to different first-type parameters. This unified approach improves channel switch success rate while avoiding the complexity of maintaining multiple protocol stacks as in DAPS.
3Adaptability or versatility
If multiple channels or signals are maintained under different serving cells, then channel switch flexibility is improved, but terminal complexity increases
Solution Approach 1:
The patent enables a single serving cell to universally handle multiple first-type parameters (physical cell identifier, mobility measurement reference signal, sequence parameter of synchronization signal). The terminal can flexibly switch between channels or signals corresponding to different first-type parameters while maintaining only one higher-layer protocol stack, thus achieving channel switch flexibility without increasing terminal complexity.
Data Source
AI summary
Provided are a signaling receiving method, a signaling transmitting method, and a device. The signaling receiving method includes receiving a first signaling. The first signaling includes a first-type parameter corresponding to a target element. The first-type parameter includes at least one of the following: a physical cell identifier, a mobility measurement reference signal, or a sequence parameter of a synchronization signal. The target element includes one of the following: a serving cell, a serving cell group, a bandwidth part (BWP), a BWP group, an information element, an information element group, a transmission configuration indicator (TCI) state, or a TCI state group. The information element includes at least one of the following: a channel or a signal.