Uplink Control Channel Segmentation for Localized SRS Multiplexing
Solution Overview
Problem
Current communication systems face challenges in efficiently multiplexing and transmitting uplink control channels and localized Sounding Reference Symbols (SRS) in wireless communication, particularly in new Radio Access Technology (RAT) systems that require higher communication capacity and support for diverse services like enhanced Mobile Broadband Communication (eMBB), massive Machine Type Communications (mMTC), and Ultra-reliable and low-latency communication (URLLC).
Innovation Solution
The method involves segmenting the uplink control channel into sub-blocks in the frequency domain when the localized SRS frequency band length is equal to or smaller than the coherent bandwidth, allowing for frequency division multiplexing with the SRS on the same antenna port, and transmitting these sub-blocks with the SRS at specific resource locations, enabling effective multiplexing and channel estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the uplink control channel and localized SRS are multiplexed in the frequency domain, then communication capacity is improved, but interference between the control channel and reference symbols increases
Solution Approach 1:
The uplink control channel is segmented into multiple sub-blocks in the frequency domain. Each sub-block is transmitted in a separate resource block, allowing the localized SRS to be inserted at specific positions without causing continuous interference across the entire bandwidth. This segmentation reduces the harmful interference effect while maintaining frequency division multiplexing capability.
Solution Approach 2:
The localized SRS is transmitted only in specific frequency regions (resource blocks) rather than across the entire bandwidth. By confining the SRS transmission to localized frequency regions and inserting it at specific positions within the control channel sub-blocks, the reference symbol provides channel estimation for its local region without generating widespread interference to other parts of the control channel.
2Productivity
If the uplink control channel is segmented into sub-blocks for frequency division multiplexing with localized SRS, then multiplexing efficiency is improved, but device complexity increases
Solution Approach 1:
The control channel is divided into multiple sub-blocks that can be independently processed and transmitted. This segmentation allows for systematic frequency division multiplexing with localized SRS, where each sub-block can be handled through standardized procedures, making the complexity manageable through modular processing rather than requiring complex overall management.
Solution Approach 2:
The segmentation and multiplexing configuration is dynamically adjustable based on service requirements and channel conditions. The system can adapt the number of sub-blocks, their frequency positions, and the localized SRS insertion points according to traffic patterns and channel characteristics, allowing the complexity to be optimized for different operating scenarios rather than being fixed at maximum.
Data Source
AI summary
A method for transmitting a multiplexed uplink control channel and localized sounding reference symbol (localized SRS) by a terminal comprises a step of dividing the uplink control channel into a plurality of uplink control channel sub-blocks in a frequency domain and then transmitting the divided uplink control channel, when a frequency bandwidth of the localized SRS is smaller than or equal to a coherent bandwidth, wherein the divided uplink control channel sub-blocks may be frequency-division-multiplexed together with at least one localized SRS and then transmitted in one symbol.