STTI Resource Allocation for PDSCH Bandwidth Utilization
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Solution Overview
Problem
Current wireless communication systems, particularly in LTE and NR technologies, face challenges in optimizing resource allocation for short transmission time intervals (TTIs), leading to inefficiencies in bandwidth utilization and throughput, especially when conflicting standards and technical agreements regarding resource block group sizes and reference signal types are involved.
Innovation Solution
A method is introduced where a wireless communication device identifies the last resource block of a resource allocation for a physical downlink shared channel (PDSCH) and determines whether additional resource blocks are included based on the reference signal type, quantity, and DCI format, allowing for the efficient allocation of additional bandwidth by identifying allocable resource blocks beyond the last allocable group.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resource allocation follows traditional TTI methods, then resource block groups are allocated in fixed sizes, but bandwidth utilization is inefficient and resources remain underutilized
Solution Approach 1:
The patent implements dynamic resource allocation where the size of resource block groups is not fixed but adapts based on the actual data transmission requirements. The base station determines the number of resource blocks needed and allocates complete resource block groups dynamically, allowing the allocation structure to change flexibly with each transmission scenario, thereby improving bandwidth utilization without requiring complex static pre-configuration
Solution Approach 2:
The invention changes the parameter of resource block group size from a fixed value to a variable that depends on the actual data volume and transmission requirements. By adjusting the number of resource blocks allocated based on real-time conditions and always allocating complete resource block groups, the system optimizes bandwidth usage while maintaining manageable complexity through standardized group boundaries
2Productivity
If resource block groups are allocated in fixed sizes, then allocation is simple, but additional resource blocks beyond the last group cannot be utilized
Solution Approach 1:
The system dynamically determines the number of resource blocks needed based on actual data requirements and allocates complete resource block groups accordingly. This dynamic approach allows the allocation to extend exactly to the needed resource blocks without leaving unused gaps, thereby increasing throughput while keeping the allocation process manageable through automated determination
Solution Approach 2:
The invention changes the resource block group allocation from a static fixed-size approach to a variable-size approach where the number of groups is determined by the actual data volume. This parameter change enables full utilization of available bandwidth while maintaining ease of operation through standardized resource block group boundaries that simplify the allocation logic
3Adaptability or versatility
If resource allocation allows partial resource block groups, then flexibility increases, but resource allocation efficiency decreases and confusion arises
Solution Approach 1:
The patent segments the available resource blocks into complete resource block groups for allocation. By ensuring that only whole groups are allocated rather than partial groups, the system maintains clear boundaries and avoids confusion about resource allocation boundaries, thereby improving efficiency while still providing flexibility through the ability to allocate different numbers of complete groups based on needs
Solution Approach 2:
The invention changes the allocation parameter from allowing partial resource block groups to requiring complete resource block groups only. This parameter change eliminates ambiguity in resource allocation boundaries and improves efficiency by preventing wasted resources, while maintaining adaptability through the flexible determination of how many complete groups to allocate based on actual data requirements
Data Source
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AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may identify that a last resource block of a resource allocation for a physical downlink shared channel (PDSCH) is in a last allocable resource block group (RBG); and determine whether one or more additional resource blocks, subsequent to the last resource block, are included in the resource allocation for the PDSCH based at least in part on at least one of a reference signal type associated with the PDSCH, a quantity of the one or more additional resource blocks, or the DCI format associated with the PDSCH. Numerous other aspects are provided.