PUCCH Resource Allocation via Shared ARI Mapping Table
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently allocating PUCCH resources, particularly in multi-component carrier systems, where the existing methods are not effective in managing ACK/NACK signals and resource allocation across multiple mobile stations, leading to suboptimal use of bandwidth and increased overhead.
Innovation Solution
A method is introduced to share an ACK/NACK resource indicator (ARI) mapping table among multiple mobile stations, allowing for flexible allocation of PUCCH resources based on channel conditions and HARQ ACK/NACK signal transmission methods, including the use of spatial orthogonal resource transmit diversity, to optimize resource utilization and increase PDSCH transmission capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated PUCCH resources are allocated to each mobile station for HARQ ACK/NACK transmission, then transmission reliability is improved, but resource utilization efficiency deteriorates and overhead increases
Solution Approach 1:
Multiple mobile stations share a common PUCCH resource pool for HARQ ACK/NACK transmission instead of allocating dedicated resources to each station. The base station dynamically indicates which specific resource within the shared pool each mobile station should use through downlink control information, enabling multiple users to efficiently share limited uplink control resources while maintaining reliable transmission through coordinated resource selection.
2Productivity
If more PUCCH resources are allocated to support multiple mobile stations, then system capacity is improved, but available bandwidth for data transmission deteriorates
Solution Approach 1:
The system implements dynamic resource allocation where the base station flexibly assigns PUCCH resources to mobile stations based on current system conditions, traffic load, and channel state. This dynamic indication mechanism allows the network to adaptively adjust the number and location of allocated control resources, optimizing the balance between control signaling capacity and data transmission bandwidth according to real-time requirements.
Solution Approach 2:
The invention changes the allocation parameters from static dedicated resources to dynamic shared resources with flexible indexing. By using resource indicator values that point to positions within a shared pool, the system can efficiently pack multiple users into fewer physical resources, thereby freeing up bandwidth for data transmission while maintaining the ability to support multiple mobile stations.
3Adaptability or versatility
If explicit PUCCH resource allocation is used for each mobile station, then resource allocation flexibility is improved, but signaling overhead deteriorates
Solution Approach 1:
A single shared PUCCH resource pool serves multiple mobile stations simultaneously, with the base station using compact resource indicator values to direct each user to their specific resource within the pool. This universal resource structure eliminates the need for separate dedicated allocations while maintaining the flexibility to adaptively assign resources based on individual user needs and channel conditions.
Data Source
AI summary
The present invention relates to a method for allocating PUCCH resources for an HARQ ACK/NACK signal, and to a method for HARQ ACK/NACK signal transmission using same. The method for allocating PUCCH resources for an HARQ ACK/NACK signal comprises the following steps: constructing an ACK/NACK resource indicator (ARI) mapping table based on the HARQ ACK/NACK signal transmission method of a terminal; transmitting the ARI mapping table to the terminal via upper layer signaling; constructing an ARI indicating PUCCH resources to be allocated to the terminal on the ARI mapping table; and transmitting the ARI to the terminal. The ARI mapping table may be transmitted to a plurality of terminals and shared among the plurality of terminals and a base station.