Channel Resource Switching With DCI Indicators to Avoid RRC Signal Storms
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Solution Overview
Problem
In wireless communication systems, RRC reconfiguration to change channel resources for terminal devices can lead to a signal storm due to the exchange of multiple messages, especially during spectrum sharing between different radio access technologies, impacting network capacity and communication efficiency.
Innovation Solution
A method that reduces the need for RRC reconfiguration by using indicators in DCI to inform terminal devices about channel resource changes, allowing for immediate adaptation without extensive signaling, and preconfiguring multiple channel resource settings based on device capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RRC reconfiguration procedure is used to inform terminal devices about channel resource changes, then terminal devices can be notified of frequency changes, but multiple messages need to be exchanged causing signal storm and impacting network capacity
Solution Approach 1:
The patent extracts the essential notification function from the complete RRC reconfiguration procedure. Instead of using the full multi-message RRC reconfiguration exchange, the invention uses a simplified indicator-based notification mechanism that conveys the necessary channel resource change information with minimal signaling, thereby resolving the contradiction between reliable notification and network capacity preservation
Solution Approach 2:
The patent applies preliminary action by pre-configuring multiple channel resource settings at the terminal device before actual frequency changes are needed. When a frequency change is required, the network node can immediately activate a pre-configured setting using a simple indicator, avoiding the need for extensive real-time signaling and thus preventing signal storms while maintaining reliable notification
2Adaptability or versatility
If RRC reconfiguration is performed for many terminal devices simultaneously, then all devices can be informed about channel resource changes, but a lot of RRC reconfiguration signals are sent at the same time causing signal storm
Solution Approach 1:
The invention extracts only the essential notification element from the RRC reconfiguration procedure. By using a compact indicator field instead of complete reconfiguration messages, the system maintains channel resource adaptability for multiple terminal devices while dramatically reducing the signaling overhead that causes signal storms
Solution Approach 2:
The patent resolves the signal storm issue by having terminal devices pre-configure multiple channel resource settings before they are needed. When frequency changes are required for multiple devices, the network node can simultaneously activate pre-configured settings using simple indicators, eliminating the need for extensive real-time signaling exchanges that would otherwise cause signal storms
Data Source
Figure 1A~1B
Figure 1C~2A
Figure 2B~3
AI summary
Embodiments of the present disclosure provide methods and apparatus for configuring channel resource. A method performed at a network node may comprise: determining (S101) a need to change radio frequency of a cell served by the network node; determining (S102) whether a configuration for channel resource to which the radio frequency to be changed has been received by a terminal device served in the cell; and transmitting (S103), to the terminal device, an indicator for the configuration for the channel resource, in response to that the configuration for the channel resource has been received by the terminal device. According to embodiments of the present disclosure, the network node may just transmit an indicator for the configuration for the channel resource, and thus the messages in the communication network needed to configure channel resource may be reduced.