LTE Frequency Resource Allocation for Interference Avoidance
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Solution Overview
Problem
In LTE or LTE-A systems, conflicts arise during enhanced information transmission due to overlapping frequency resources used for different types of information, leading to interference between MIB, SIB, RAR, paging messages, and unicast data.
Innovation Solution
The method involves determining separate frequency resources for different types of information and adjusting the transmission in overlapping subframes to avoid conflicts, either by using available subframes or shifting the transmission on non-overlapping frequency resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency resources are reused for enhanced transmission of different information types, then transmission reliability is improved, but resource interference occurs
Solution Approach 1:
The patent segments frequency resources by creating separate search space sets for different information types (MIB, SIB, RAR, paging, unicast data). Each information type is assigned a dedicated search space set with specific monitoring occasions and frequency resources, preventing interference while maintaining enhanced transmission reliability through repeated transmissions within each segmented resource allocation.
2Object-affected harmful factors
If separate frequency resources are allocated for different information types, then resource interference is avoided, but resource utilization efficiency decreases
Solution Approach 1:
The patent implements dynamic resource allocation through configurable search space sets that can be activated or deactivated based on traffic conditions. The network can dynamically adjust which search space sets are monitored and their associated frequency resources, allowing flexible adaptation to varying service demands while maintaining separation of information types to avoid interference.
3Reliability
If enhanced transmission is applied to all information types, then coverage is improved, but system complexity increases
Solution Approach 1:
The patent applies enhanced transmission selectively to specific information types and user equipment based on local requirements. Different search space sets are configured for different information types (MIB, SIB, RAR, paging, unicast data), allowing enhanced coverage to be applied where needed while maintaining simpler transmission for other information types, thus balancing coverage improvement with system complexity management.
Data Source
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AI summary
This application provides an information transmission method, a base station, and user equipment. The method includes: determining a first frequency resource, where the first frequency resource is a frequency resource used to send first information in an enhanced manner; determining a second frequency resource, where the second frequency resource is a frequency resource used to send second information or send second information in an enhanced manner; and when there is an overlapping frequency resource between the first frequency resource and the second frequency resource, sending, in an available subframe for sending the first information in an enhanced manner, the first information in an enhanced manner by using the first frequency resource, where the available subframe is one or more subframes other than a subframe in a subframe set for sending the second information or sending the second information in an enhanced manner; or sending, in a subframe in a subframe set for sending the second information or sending the second information in an enhanced manner, the first information in an enhanced manner on a frequency resource other than the overlapping frequency resource in the first frequency resource.