PUSCH Bitstream Generation Segmentation for Interleaving Speed
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing 3GPP LTE mobile communication networks require high processing power for generating PUSCH bitstreams, leading to delayed interleaving of user data due to time-consuming handling of ACK/NACK and RI information, which is processed early in the bitstream generation process.
Innovation Solution
Adding downlink feedback information during the scrambling process instead of interleaving, reserving positions for RI information, and using a recursive algorithm to simplify interleaving, thereby reducing processing power and increasing available time for handling control information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ACK/NACK and RI information are processed during the interleaving stage, then control information can be multiplexed with user data, but processing power requirements increase and interleaving is delayed
Solution Approach 1:
The patent segments the bitstream generation process into distinct stages: interleaving of user data is performed first, followed by separate processing of control information (ACK/NACK and RI). This segmentation allows the interleaving operation to complete without the computational burden of simultaneously handling control information multiplexing, thereby reducing processing power requirements and accelerating the interleaving stage.
Solution Approach 2:
The patent performs preliminary interleaving of user data before adding control information. By completing the interleaving operation first and then subsequently inserting ACK/NACK and RI information in later processing stages, the system avoids the complexity of integrating control information handling into the interleaving process itself, thus reducing processing power demands during the critical interleaving phase.
2Productivity
If control information is handled during interleaving, then multiplexing can be achieved, but time for handling control information is reduced
Solution Approach 1:
The patent divides the bitstream generation into sequential phases: user data interleaving is completed first, then control information is processed and multiplexed in subsequent phases. This time segmentation ensures that control information handling receives dedicated processing time without competing with the interleaving operation, thereby increasing the time available for accurate control information processing while maintaining overall bitstream generation efficiency.
Solution Approach 2:
By performing user data interleaving as a preliminary action before control information processing, the patent creates a clear temporal separation that allows sufficient time to be allocated to control information handling. The interleaving is completed in advance, freeing up processing time for the subsequent insertion and processing of ACK/NACK and RI information.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A technique for providing a Physical Uplink Shared Channel (PUSCH) bitstream is provided. A method implementation of this technique comprises the steps of obtaining encoded user data, interleaving the encoded user data, scrambling the interleaved encoded user data, and adding downlink feedback information to the scrambled encoded user data. The downlink feedback information may be at least one of information relating to a sub-frame reception status of the encoded user data and information relating to a number of transmission layers being able to be received under current channel conditions, in particular Rank Indication (RI) information.