Relay Node Uplink Control Information Transmission via PUCCH Format 2a/2b
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Solution Overview
Problem
There is a lack of effective methods for a relay node (RN) to transmit uplink control information in wireless communication systems, particularly in LTE systems, where the allocation of transmission formats and signaling methods for RNs have not been adequately investigated.
Innovation Solution
The method involves a relay node receiving resource allocation information and sequence information for a predetermined physical uplink control channel (PUCCH) transmission format from an eNode-B and transmitting uplink control information using a sequence corresponding to the received sequence information through a predetermined number of symbols in a resource region indicated by the received resource allocation information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a relay node is installed to improve channel conditions and extend cell service region, then communication coverage and data processing rate are improved, but the ability of the relay node to transmit uplink control information is insufficient
Solution Approach 1:
The patent segments the uplink control information transmission by introducing a specific PUCCH transmission format (Format 2a/2b) dedicated for relay nodes. This segmentation allows the relay node to transmit uplink control information (ACK/NACK) separately from regular user equipment transmissions, resolving the contradiction by providing a specialized transmission path that ensures reliability while maintaining extended cell coverage.
Solution Approach 2:
The patent introduces a specific PUCCH transmission format as an intermediary mechanism between the relay node and the eNodeB. This intermediary format (Format 2a/2b) acts as a mediator that enables the relay node to transmit uplink control information reliably, bridging the gap created by the relay node's dual role in extending coverage while maintaining control information transmission capability.
2Ease of manufacture
If relay node technology is introduced to reduce costs and extend service coverage, then deployment cost efficiency is improved, but transmission format allocation and signaling methods for relay nodes are not adequately investigated
Solution Approach 1:
The patent applies universality by designing a PUCCH transmission format (Format 2a/2b) that serves multiple functions: it carries ACK/NACK information, supports relay node operations, and integrates with existing LTE uplink control structures. This multi-functional design reduces the need for entirely separate signaling mechanisms, thereby maintaining deployment cost efficiency while providing the necessary transmission format allocation for relay nodes.
Solution Approach 2:
The patent changes specific parameters of the PUCCH transmission format to accommodate relay node requirements. By modifying the format to include specific resource allocation patterns, sequence information, and timing structures (Format 2a/2b), the system provides adequate transmission format allocation for relay nodes without requiring complete redesign of the uplink control framework, thus balancing complexity and functionality.
3Productivity
If uplink control information transmission is enabled for relay nodes, then communication efficiency between eNodeB and relay node is improved, but resource allocation and sequence information management become more complex
Solution Approach 1:
The patent applies preliminary action by pre-defining the PUCCH transmission format (Format 2a/2b) with specific resource allocation patterns and sequence information structures. These formats are established in advance through standardization, allowing relay nodes to transmit uplink control information efficiently without requiring complex real-time resource allocation decisions, thus improving communication efficiency while managing complexity through pre-planned configurations.
Data Source
AI summary
Disclosed is a method for enabling a relay node to transmit uplink control information. The relay node can receive resource allocation information and sequence information according to the transmission format of a physical uplink control channel set from a base station in advance. Additionally, the relay node can transmit the uplink control information, to which a sequence corresponding to the received sequence information is applied, in at least one slot of a resource area, which is indicated by the received resource allocation information, through a fixed number of symbols.