HARQ-ACK Codebook Concatenation for MBMS PUCCH Allocation
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Solution Overview
Problem
The determination of PUCCH resources for a HARQ-ACK codebook of a MBMS service is uncertain when UEs receive both unicast and multicast services, leading to inefficiencies in resource allocation and increased complexity.
Innovation Solution
A method for generating a final HARQ-ACK codebook by concatenating sub-codebooks for unicast and MBMS services, with PUCCH resources determined based on the last PDCCH in the time-frequency domain of the unicast service, ensuring flexibility and reducing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate codebooks are generated for unicast and MBMS services, then service-specific feedback can be optimized, but the determination of PUCCH resources becomes uncertain and complex when both services are received simultaneously
Solution Approach 1:
The patent combines separate unicast and MBMS codebooks into a single final codebook by concatenation. This merging approach allows the UE to generate one unified HARQ-ACK codebook that includes feedback for both service types, eliminating the complexity of determining separate PUCCH resources for each service while maintaining service-specific feedback optimization.
Solution Approach 2:
The final codebook serves multiple functions simultaneously - it carries HARQ-ACK feedback for both unicast and MBMS services. By making the codebook universal, the system can handle multiple service types through a single feedback mechanism, resolving the uncertainty around PUCCH resource determination.
2Ease of operation
If a unified codebook approach is used for both unicast and MBMS services, then PUCCH resource allocation becomes flexible and simplified, but the codebook structure must accommodate different service types
Solution Approach 1:
The patent segments the final codebook into distinct parts - a first codebook for unicast services and a second codebook for MBMS services. This segmentation allows the unified codebook to maintain clear structural boundaries while accommodating different service types, making the codebook easier to manage despite its multi-functional nature.
Solution Approach 2:
The patent embeds the unicast and MBMS codebooks within the final codebook structure through concatenation. The first codebook (unicast) and second codebook (MBMS) are nested within the final codebook as sequential segments, allowing the system to handle multiple service types within a single organized structure without excessive complexity.
3Ease of manufacture
If PUCCH resources are determined based on the last PDCCH in the time-frequency domain of unicast service, then resource allocation is simplified, but MBMS service feedback must be integrated into this framework
Solution Approach 1:
The patent performs preliminary organization of feedback information by generating the first codebook for unicast services and the second codebook for MBMS services before final integration. This preliminary segmentation allows the system to prepare service-specific feedback structures in advance, making the final integration into a unified codebook simpler and more manageable.
Data Source
AI summary
The present application relates to methods, systems, and devices related to digital wireless communication, and more specifically, to techniques related to determining PUCCH resources for a HARQ-ACK codebook of a MBMS service. In one exemplary aspect, a method for wireless communication is disclosed. The method includes receiving, by a terminal, a first set of information relating to a unicast service and a second set of information relating to a multimedia broadcast multicast service (MBMS). The method also includes generating, by the terminal, a final codebook that is a concatenation of a first codebook based on the first set of information and a second codebook based on the second set of information.