Uplink Control Channel Resource Pools for Inter-Cell Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication networks, particularly in LTE systems, the Physical Uplink Control Channel (PUCCH) faces limitations due to high frequency reuse and increased inter-cell interference in Cooperative Multi-Point (CoMP) environments, leading to reduced coverage and increased overhead.
Innovation Solution
The implementation of at least two resource pools for the uplink control channel, including a cell-specific and a CoMP-specific pool, allows for optimized utilization of orthogonal and non-orthogonal resources, reducing inter-cell interference and overhead by spatially separating resources and using dynamic modifiers for resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high frequency reuse is implemented in LTE system, then frequency resource utilization is improved, but PUCCH coverage is reduced due to increased inter-cell interference
Solution Approach 1:
The patent segments the PUCCH resources into multiple resource pools (first PUCCH resource pool and second PUCCH resource pool) with different frequency locations. This segmentation allows the system to maintain high frequency reuse by distributing PUCCH transmissions across different frequency resources, thereby reducing inter-cell interference and maintaining PUCCH coverage while preserving frequency resource utilization efficiency.
2Adaptability or versatility
If multiple mobile terminals share narrowband frequency and time resources of PUCCH, then device connectivity is improved, but inter-cell interference increases reducing PUCCH performance
Solution Approach 1:
The patent introduces a frequency dimension for PUCCH resource allocation by configuring multiple PUCCH resource pools at different frequency locations. This dimensional expansion allows multiple mobile terminals to share PUCCH resources more effectively by distributing them across frequency, thereby maintaining device connectivity while reducing inter-cell interference through frequency diversity.
3Productivity
If CoMP environment is implemented to increase feedback data, then transmission diversity is improved, but inter-cell interference increases negatively affecting PUCCH resources
Solution Approach 1:
The patent segments PUCCH resources into dedicated resource pools that can handle the increased feedback data requirements of CoMP environments. By providing multiple PUCCH resource pools with different frequency locations and configurations, the system can accommodate increased feedback capacity while managing inter-cell interference through resource distribution and selection mechanisms.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A method for processing data in a wireless communication network is provided, wherein at least two resource pools for an uplink control channel are provided for mobile terminals for a geographical area, and wherein the mobile terminals in the geographical area uses at least one of the at least two resource pools for the uplink control channel. In addition, a corresponding device and system are suggested.