NB-IoT User Equipment Multi-Transport Block Scheduling via Single DCI
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing multiple transport blocks in NarrowBand-Internet of Things (NB-IoT) networks, particularly in scheduling and transmitting data, which affects the performance and resource allocation in NB-IoT systems.
Innovation Solution
A method for a user equipment (UE) to receive and transmit multiple transport blocks in a wireless communication system supporting NB-IoT, where scheduling information is transmitted through Downlink Control Information (DCI), allowing for the transmission and reception of multiple physical channels via a single DCI, and enabling continued data transmission even if initial DCI for multi-transport block scheduling is not received.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple transport blocks are scheduled through separate DCI messages, then scheduling reliability is improved, but signaling overhead and resource consumption increase
Solution Approach 1:
The patent combines multiple DCI messages into a single DCI that schedules multiple transport blocks. The base station transmits one DCI containing scheduling information for multiple PDSCHs or PUSCHs, reducing the number of separate control messages while maintaining reliable scheduling through comprehensive resource allocation information within the unified DCI structure.
Solution Approach 2:
The DCI structure is designed to perform multiple scheduling functions simultaneously. A single DCI message can schedule multiple downlink or uplink transport blocks, making the control mechanism universal and multi-functional. This allows one DCI to handle what previously required multiple separate DCI messages, reducing overhead while maintaining scheduling capability.
2Measurement precision
If multiple separate DCI messages are used for scheduling, then scheduling precision is improved, but transmission time and latency increase
Solution Approach 1:
Multiple scheduling decisions are merged into a single DCI transmission event. Instead of sending separate DCI messages at different times for each transport block, the base station consolidates all scheduling information into one DCI, reducing the time required for multiple transmission cycles while maintaining precise scheduling through detailed resource allocation fields.
3Adaptability or versatility
If separate DCI messages are transmitted for each transport block, then scheduling flexibility is improved, but device complexity and processing load increase
Solution Approach 1:
The UE's scheduling mechanism is designed to handle multiple transport blocks through a universal DCI structure. Instead of requiring separate processing logic for each individual DCI message, the UE can process a single multi-functional DCI that schedules multiple blocks, reducing processing complexity while maintaining the flexibility to allocate resources dynamically across multiple channels.
Data Source
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AI summary
The present disclosure provides a method for a terminal to receive a physical downlink shared channel (PDSCH) in a wireless communication system supporting a narrow band-internet of things (NB-IoT). Specifically, the terminal receives a first physical downlink control channel (PDCCH) including first downlink control information (DCI) from a base station and receives a first PDSCH on the basis of the first DCI. Here, the first PDSCH may include indication information indicating whether a multi transport block is scheduled. The terminal receives a plurality of PDSCHs from the base station, wherein at least one PDSCH of the plurality of PDSCHs may be received without receiving a separate DCI according to the indication information