M-PUCCH Resource Allocation for MTC Uplink Interference
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting and receiving uplink signals, particularly in machine type communication (MTC) scenarios, where resource allocation and synchronization issues lead to suboptimal performance and increased overhead for base stations.
Innovation Solution
The proposed solution involves a method for transmitting and receiving uplink signals using a Physical Uplink Control Channel (PUCCH) in a wireless communication system, where a user equipment (UE) receives information on an M-PUCCH resource from a base station and transmits the signal in a specific subframe using a designated M-PUCCH resource, and the base station signals information to the UE for MTC, allowing for efficient resource allocation and reduced interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If MTC UEs use the same PUCCH resources as normal UEs, then resource allocation is simplified, but interference between MTC UEs and normal UEs increases
Solution Approach 1:
The patent divides PUCCH resources into separate pools: one pool for normal UEs and another pool for MTC UEs. This segmentation is achieved by configuring MTC UEs with specific PUCCH resource indices that are distinct from those allocated to normal UEs, thereby eliminating resource conflicts and interference between the two UE types while maintaining independent resource management for each category.
2Object-affected harmful factors
If MTC UEs are allocated dedicated M-PUCCH resources, then interference is reduced, but resource allocation complexity and overhead increase
Solution Approach 1:
The patent implements a unified PUCCH resource allocation mechanism that serves both normal UEs and MTC UEs through a common configuration framework. The base station uses the same signaling procedures and resource management algorithms for both UE types, with MTC UEs simply receiving assignments from a different resource pool. This multi-functional approach reduces allocation complexity while providing dedicated resources for MTC UEs.
3Ease of operation
If MTC UEs transmit uplink signals using standard PUCCH procedures, then protocol simplicity is maintained, but resource utilization efficiency decreases
Solution Approach 1:
The patent applies local quality optimization by tailoring PUCCH resource allocation specifically for MTC UEs within the existing protocol framework. MTC UEs receive customized resource assignments from dedicated M-PUCCH pools that are optimized for MTC traffic patterns, while normal UEs continue to use standard PUCCH resources. This localized optimization improves overall resource utilization efficiency without requiring changes to the fundamental PUCCH transmission protocol.
Data Source
AI summary
The method for transmitting and receiving an uplink signal in a wireless communication system, according to one embodiment of the present invention, enables receiving, from a base station, information about an M-PUCCH resource for MTC, and transmitting, from a first subframe, the uplink signal through a first M-PUCCH resource on the basis of the M-PUCCH resource. Here, the index of the first M-PUCCH resource corresponds to a first index which is the index of the PUCCH resource of general UE in a first slot, and to a second index which is the index of the PUCCH resource of general UE in a second slot. The first index and the second index may be defined as the indexes of the resources positioned on a pair of the same physical resource blocks (PRBs).