Base Station Link Configuration for EN-DC Intermodulation Limits
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Solution Overview
Problem
In dual connectivity scenarios between LTE and NR networks, simultaneous uplink transmission causes intermodulation distortion in downlink reception, degrading terminal performance.
Innovation Solution
A method and device for configuring communication links by exchanging capability enquiry and reporting signaling between base stations and terminals to determine and adhere to the terminal's wireless transmission capabilities, avoiding configurations that cause intermodulation distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a terminal performs uplink transmission on two frequency bands simultaneously in EN-DC scenario, then the dual connectivity functionality is achieved, but serious intermodulation distortion is caused to downlink receiving which degrades terminal performance
Solution Approach 1:
The patent applies preliminary action by having the terminal pre-report its wireless transmission capability (including supported frequency band combinations and simultaneous transmission capabilities) to the base station before actual communication link configuration. The base station then uses this advance information to configure communication links that avoid intermodulation distortion, preventing the harmful effect before it occurs rather than trying to mitigate it afterward.
Solution Approach 2:
The patent implements feedback through the capability reporting mechanism where the terminal provides information about its transmission capabilities to the base station. This feedback loop enables the base station to make informed configuration decisions that prevent intermodulation distortion while maintaining dual connectivity functionality.
2Productivity
If communication link configuration is performed without considering terminal wireless transmission capability, then configuration speed is improved, but configuration accuracy deteriorates leading to intermodulation distortion
Solution Approach 1:
The patent resolves this contradiction by performing the capability inquiry and reporting process in advance, before actual communication link configuration. This preliminary action provides the base station with all necessary information about terminal capabilities upfront, enabling accurate configuration decisions to be made quickly without requiring complex real-time analysis or trial-and-error approaches.
3Manufacturing precision
If capability enquiry and reporting signaling is exchanged between base station and terminal, then configuration accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent applies universality by designing the capability reporting mechanism to serve multiple purposes: it not only provides information for avoiding intermodulation distortion but also enables the base station to understand the terminal's overall wireless transmission capabilities for future configuration decisions. This multi-functional approach justifies the signaling overhead by providing comprehensive information that benefits multiple aspects of communication management.
Data Source
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AI summary
The present disclosure provides a communication link configuration method and device. Said method is applied to a base station, and comprises: sending capability survey signaling to a terminal, the capability survey signaling being used for querying the wireless transmission capability of the terminal; receiving capability reporting signaling sent by the terminal, the capability reporting signaling comprising first information for characterizing the wireless transmission capability of the terminal; and configuring a corresponding communication link for the terminal according to the first information. Therefore, the present disclosure can configure a corresponding communication link for a terminal according to the wireless transmission capability of the terminal, improving the accuracy of communication link configuration, and further improving the communication quality