Base Station Backhaul Link Signaling for Handover Coordination
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing and optimizing the backhaul link information transmission in radio access networks, particularly in multicarrier communication systems, which can impact network performance and user experience.
Innovation Solution
The implementation of advanced modulation and coding schemes, such as Quadrature Amplitude Modulation (QAM) and dynamic modulation and coding scheme adjustments based on transmission requirements and radio conditions, along with hybrid transmission mechanisms like TDMA/CDMA and OFDM/CDMA, to enhance physical radio transmission in base station backhaul links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If advanced modulation and coding schemes (QAM) and dynamic adjustment mechanisms are implemented, then transmission efficiency and adaptability are improved, but system complexity increases
Solution Approach 1:
The patent implements dynamic modulation and coding scheme adjustments based on transmission requirements and radio conditions. The system automatically selects and switches between different modulation schemes (e.g., QAM orders) and coding rates according to channel quality indicators, achieving adaptive optimization of transmission efficiency without manual intervention.
Solution Approach 2:
The system changes key transmission parameters including modulation order, coding rate, and resource allocation based on measured radio conditions. By dynamically adjusting these parameters according to channel quality, the system optimizes the balance between transmission efficiency and complexity management.
2Adaptability or versatility
If hybrid transmission mechanisms (TDMA/CDMA and OFDM/CDMA) are used, then transmission adaptability is improved, but device complexity increases
Solution Approach 1:
The patent employs hybrid transmission mechanisms that combine TDMA/CDMA and OFDM/CDMA techniques within a single system framework. This multi-functional approach allows the base station to utilize different transmission methods simultaneously or alternately, depending on the specific requirements of different service types and radio conditions, thereby achieving enhanced adaptability.
Solution Approach 2:
The transmission system is segmented into different operational modes (TDMA-based and OFDM-based) that can be independently configured and activated. This segmentation allows complex hybrid mechanisms to be managed through modular control, reducing overall system complexity while maintaining versatility.
3Adaptability or versatility
If dynamic modulation and coding scheme adjustments are implemented, then transmission adaptability is improved, but processing time increases
Solution Approach 1:
The system performs preliminary actions by pre-configuring multiple modulation and coding schemes before actual transmission occurs. Channel quality indicators and transmission parameters are measured and processed in advance, allowing the base station to quickly select and switch between pre-prepared modulation schemes during time-critical transmission intervals, thereby reducing real-time processing delays.
Data Source
AI summary
A second access node sends, to a first access node, at least one message comprising: an identifier indicating a first cell of a third access node, wherein the second access node communicates with the third access node via a parent node of the third access node; and at least one parameter indicating that the second cell is of the parent node of the third access node, wherein the at least one parameter comprises an identifier indicating a second cell. The second access node receives, from the first access node, a message requesting a handover of a wireless device to the first cell.