TDD NB-IoT System Information Carrier Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current mobile communication systems face challenges in supporting high-speed data services, large data traffic, increased connection devices, low latency, and energy efficiency, particularly in transmitting and receiving system information in TDD NB-IoT systems, where resource shortages and complex communication protocols hinder efficient operation.
Innovation Solution
A method for a terminal to receive system information in a TDD NB-IoT system by determining the location of a non-anchor carrier based on operation mode information, allowing for the transmission and reception of system information through both anchor and non-anchor carriers, configured as guard bands or in-band, enabling efficient system information exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If system information is transmitted only through anchor carrier, then device complexity is reduced, but system information transmission efficiency deteriorates
Solution Approach 1:
The patent divides system information transmission into two parts: essential system information transmitted through the anchor carrier, and additional system information transmitted through non-anchor carriers. This segmentation allows efficient transmission of critical information while enabling optional reception of supplementary information, thereby improving overall transmission efficiency without significantly increasing terminal complexity for devices that only require essential information.
Solution Approach 2:
The patent implements partial action by allowing terminals to selectively receive system information based on their needs. Terminals can choose to receive only the essential system information from the anchor carrier or additionally receive supplementary information from non-anchor carriers. This partial reception approach improves transmission efficiency for devices that need comprehensive information while keeping the basic operation simple for devices that only need essential information.
2Quantity of substance
If non-anchor carrier is used for system information transmission, then system information transmission capacity is improved, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by providing clear pre-configuration of non-anchor carrier parameters including frequency location, bandwidth, and system information transmission timing. The base station configures these parameters in advance and notifies the terminal before system information transmission on non-anchor carriers begins. This preliminary configuration reduces terminal processing complexity by providing all necessary information upfront, while still enabling enhanced system information transmission capacity through the additional carrier.
3Reliability
If operation mode information is not clearly defined, then system flexibility is maintained, but system information reception reliability deteriorates
Solution Approach 1:
The patent applies local quality by defining specific operation modes (guard band mode and in-band mode) with distinct characteristics and transmission rules for each mode. Each mode has locally optimized parameters such as frequency location relationships and resource allocation patterns. This allows the system to maintain flexibility by selecting the appropriate mode for each deployment scenario while ensuring reliable system information reception through mode-specific optimized configurations.
Data Source
AI summary
The present disclosure provides a method for receiving system information in a wireless communication system supporting a TDD narrowband. More specifically, a method performed by a terminal includes receiving first system information from a base station through an anchor carrier, the first system information including operation mode information on an operation mode of the system; determining a location of a non-anchor carrier for receiving second system information based on the operation mode information; and receiving the second system information from the base station through the non-anchor carrier, in which the operation mode information is configured in a guard band or an in-band. In this way, SIB1-NB is also transmitted and received on the non-anchor carrier.