PUSCH RB Interlace Allocation Across Guarded Subbands
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transmitting and receiving wireless signals, particularly in unlicensed bands, due to limitations in resource allocation and channel access mechanisms, which affect reliability and latency.
Innovation Solution
The proposed method involves resource allocation for uplink channels based on RB interlaces, where a frequency band is divided into subbands with guard bands, and the allocation is indicated using RA information, allowing transmissions to occur in RB interlaces within the frequency band, even across multiple subbands and guard bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional resource allocation methods are used for uplink transmission, then the system structure remains simple, but transmission efficiency and reliability are insufficient especially in unlicensed bands
Solution Approach 1:
The frequency band is divided into multiple subbands (SBs), and each subband is further divided into resource blocks (RBs). The RA information indicates at least one consecutive SB index, enabling segmented resource allocation that improves transmission efficiency while maintaining manageable complexity through structured division.
Solution Approach 2:
The patent introduces RB interlace structure that maps resource blocks across multiple subbands in a non-contiguous manner. This dimensional transformation from contiguous frequency allocation to interlaced allocation across subbands enables more efficient spectrum utilization and improves transmission reliability in unlicensed bands.
2Reliability
If resource allocation is restricted to single subband, then the allocation mechanism remains simple, but transmission reliability and latency performance deteriorate
Solution Approach 1:
The patent merges multiple subbands into a unified resource allocation framework. When RA information indicates multiple consecutive SB indexes, the system performs PUSCH transmission in RB interlace across all indicated subbands and their intervening guard bands, combining resources from multiple subbands to improve transmission reliability and reduce latency.
Solution Approach 2:
The RA information structure serves multiple functions: it indicates which subbands are allocated, automatically determines the RB interlace pattern, and identifies guard bands to include in the transmission. This multi-functional allocation mechanism improves reliability without proportionally increasing complexity.
3Productivity
If guard bands are excluded from resource allocation, then the allocation efficiency is high, but channel access failures increase due to insufficient protection
Solution Approach 1:
Guard bands act as intermediaries between subbands. The patent explicitly includes guard bands in the RB interlace transmission when multiple subbands are indicated by RA information. This intermediary structure provides necessary protection and separation while still allowing efficient utilization of the overall frequency resource.
Data Source
AI summary
The present invention relates to a wireless communication system, specifically to a method and an apparatus therefore, the method comprising the steps of: receiving resource allocation (RA) information for transmitting a PUSCH in a frequency band, the frequency band comprising a plurality of sub-bands (SB), each SB comprising a plurality of consecutive RBs, a guard band (GB) being provided between the plurality of SBs, and the RA information indicating one or more non-consecutive SB indexes; and transmitting the PUSCH in an RB interlace in the frequency band on the basis of the RA information.