Control Information Repetition for Low-Coverage Network Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In low-coverage environments, MTC terminals and legacy terminals struggle to correctly receive system information blocks (SIBs) due to limited repeated transmission times, leading to network access issues.
Innovation Solution
A method and device for sending control information by repeatedly transmitting it M times within a scheduling period of N radio frames, where N and M are positive integers greater than 1, allowing for pre-defined resource allocation and system frame number determination based on time intervals, cell identifiers, and signaling conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the scheduling period for control information is extended to allow more repeated transmissions, then the reception accuracy improves, but the network access delay increases
Solution Approach 1:
The patent implements periodic transmission of control information within a defined scheduling period T, where the same control information is repeated M times at intervals of K radio frames. This periodic action ensures that terminals in low-coverage areas can accumulate sufficient signal energy through repeated receptions, improving reception reliability without requiring indefinite extension of the scheduling period.
Solution Approach 2:
The patent introduces configurable parameters (scheduling period T, repetition count M, interval K) that can be adjusted to balance reception accuracy and access delay. By changing these parameters, the system can adapt to different coverage conditions and terminal requirements, optimizing the trade-off between reliability and time loss without fixed constraints.
2Reliability
If extra apparatus such as relay stations are deployed to improve coverage, then the terminal reception capability improves, but the deployment cost increases
Solution Approach 1:
The patent enables the existing network infrastructure to serve low-coverage terminals through intelligent resource allocation and repeated transmission mechanisms. The base station automatically adjusts transmission parameters and repetition counts based on terminal feedback and coverage conditions, allowing the system to self-optimize coverage without requiring additional relay stations or infrastructure deployment.
3Loss of time
If the scheduling period is shortened to reduce delay, then the network responsiveness improves, but the reception accuracy of control information deteriorates
Solution Approach 1:
The patent maintains continuous transmission of control information throughout the scheduling period T, with M repeated transmissions spaced at intervals of K radio frames. This continuous action ensures that control information is always available for reception, maintaining network responsiveness while providing multiple opportunities for accurate reception within each scheduling period.
Data Source
AI summary
Provided are a method and device for sending control information and receiving control information. The method for sending control information comprises repeatedly sending control information within a scheduling period of the control information M times, wherein the scheduling period is the length of N radio frames, N and M are positive integers greater than 1, and N is greater than or equal to M. The disclosure solves the technical problem in the related art that control information cannot be correctly received in a low-coverage environment and thus a terminal cannot normally access a network, achieving the technical effect of accurately receiving the control information so as to ensure that the network can be accessed normally.