Radio Resource Allocation for Control Channel Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In heterogeneous network environments, control channels face interference from neighboring cells, leading to errors in control information transmission and inefficient data transmission due to insufficient interference resistance.
Innovation Solution
Allocating different radio resources for control channels between macro and femto base stations, where a femto base station transmits its cell ID to a macro base station, allowing the macro base station to allocate non-overlapping radio resources for interference reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If control channels are transmitted using the same radio resources in heterogeneous networks, then resource utilization is efficient, but interference between macro and femto base stations increases
Solution Approach 1:
The patent segments the radio resources for control channels by creating separate resource pools for macro base stations and femto base stations. The macro base station is allocated specific resource blocks while femto base stations are allocated different resource blocks, thereby dividing the originally shared resource into distinct segments that prevent mutual interference while maintaining overall resource utilization.
2Reliability
If control channels use high transmission power to resist interference, then control information reliability improves, but interference to other cells increases
Solution Approach 1:
The patent extracts the control channel transmission function into separate resource domains for macro and femto base stations. By allocating dedicated resource blocks specifically for femto base station control channels that are distinct from macro base station resources, the system allows each to transmit at appropriate power levels without causing harmful interference to the other, thus extracting the interference problem from the shared resource environment.
3Object-affected harmful factors
If different radio resources are allocated to macro and femto base stations for control channels, then interference is reduced, but resource allocation complexity increases
Solution Approach 1:
The patent applies local quality by configuring radio resources according to the specific characteristics and locations of different base station types. Macro base stations operating in wide coverage areas receive resource allocations suitable for their broadcast nature, while femto base stations in localized areas receive different resource allocations optimized for their confined coverage, thereby reducing interference through location-aware resource differentiation without requiring complex global coordination.
Data Source
AI summary
Provided is a system for allocating a radio resource. The system for allocating a radio resource may include a macro base station, a macro terminal, and a femto base station. The femto base station may allocate a radio resource for transmitting a control channel to a femto terminal, and transmit information of the allocated radio resource to the macro base station. The macro base station may allocate a radio resource for transmitting a control channel to the macro terminal in relation to the received information of the radio resource.