Multiple H-ARQ Process Transport Block Selection
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Solution Overview
Problem
Conventional wireless communication systems are limited in their ability to select and transmit multiple transport formats simultaneously with multiple hybrid automatic repeat request (H-ARQ) processes, failing to efficiently manage channel quality variations and quality of service (QoS) requirements across different physical resources.
Innovation Solution
The method involves determining available physical resources and H-ARQ processes, mapping higher layer data flows to multiple H-ARQ processes, and generating transport blocks with specific physical transmission parameters and configurations to support QoS requirements, allowing for simultaneous transmission of multiple transport blocks across multiple H-ARQ processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional single H-ARQ scheme is used, then system complexity is reduced, but system throughput and resource utilization are limited
Solution Approach 1:
The patent divides the single H-ARQ process into multiple independent H-ARQ processes (first H-ARQ process and second H-ARQ process), each handling different transport blocks. This segmentation allows parallel processing of multiple data flows, increasing system throughput while maintaining manageable complexity through modular process design.
Solution Approach 2:
The patent introduces a new dimension to H-ARQ operation by enabling simultaneous activation of multiple H-ARQ processes across different code domains. Instead of sequential single-process operation, the system now operates in a multi-dimensional space where multiple processes can be active concurrently, each with its own transport block and code allocation.
2Productivity
If multiple transport blocks are transmitted simultaneously with multiple H-ARQ processes, then resource utilization improves, but TFC selection complexity increases
Solution Approach 1:
The patent segments the transport format combination selection into separate selections for each H-ARQ process. The first TFC is selected independently for the first H-ARQ process, and the second TFC is selected independently for the second H-ARQ process. This segmentation simplifies the overall selection complexity by breaking down the multi-dimensional selection problem into manageable independent selections.
Solution Approach 2:
The patent introduces dynamic TFC selection capability where the system can adaptively choose different transport formats for each H-ARQ process based on current channel conditions and QoS requirements. This dynamic selection allows the system to optimize resource utilization in real-time while managing complexity through flexible, condition-based decision making.
3Reliability
If channelization codes are differentiated by channel quality, then transmission reliability improves, but code allocation complexity increases
Solution Approach 1:
The patent applies local quality differentiation by assigning different channelization codes with different quality characteristics to different H-ARQ processes and transport blocks. Each code is selected based on its specific quality properties matching the requirements of the associated data flow, achieving optimized reliability without requiring complex global code management.
Solution Approach 2:
The patent implements preliminary code quality assessment and differentiation before the actual transmission process. Channelization codes are pre-evaluated and categorized by quality, allowing the system to make informed allocation decisions for each H-ARQ process. This preliminary action simplifies real-time code allocation by reducing the decision space to pre-characterized code options.
Data Source
AI summary
A method and apparatus for selecting multiple transport formats and transmitting multiple transport blocks (TBs) in a transmission time interval simultaneously with multiple hybrid automatic repeat request (H-ARQ) processes in a wireless communication system are disclosed. Available physical resources and H-ARQ processes associated with the available physical resources are identified and channel quality of each of the available physical resources is determined. Quality of service (QoS) requirements of higher layer data to be transmitted are determined. The higher layer data is mapped to at least two H-ARQ processes. Physical transmission and H-ARQ configurations to support QoS requirements of the higher layer data mapped to each H-ARQ process are determined. TBs are generated from the mapped higher layer data in accordance with the physical transmission and H-ARQ configurations of each H-ARQ process, respectively. The TBs are transmitted via the H-ARQ processes simultaneously.