PUSCH Resource Allocation via DCI Formats 6-0A and 6-0B
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Solution Overview
Problem
Current Machine Type Communication (MTC) devices lack an effective solution for Physical Uplink Shared Channel (PUSCH) resource allocation, which is crucial for efficient data transmission in IoT applications.
Innovation Solution
A method and apparatus for resource allocation in a base station that allocates resources for PUSCH using predefined schemes, transmitting resource allocation results via Downlink Control Information (DCI), with options for fixed or variable time-domain lengths and detailed information on frequency-domain positions and sizes, enabling efficient resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If no PUSCH resource allocation scheme is defined, then the system maintains simplicity in the uplink transmission protocol, but resource allocation efficiency deteriorates and data transmission performance worsens
Solution Approach 1:
The patent applies parameter changes by defining PUSCH resource allocation through DCI format 6-0A and 6-0B, which include specific parameters such as frequency domain resource assignment, time domain resource assignment, and modulation and coding scheme. These parameter definitions enable efficient resource allocation while maintaining system structure.
Solution Approach 2:
The patent segments the resource allocation into different DCI formats (6-0A for grant-free, 6-0B for granted) with distinct parameter structures. This segmentation allows tailored resource allocation strategies for different transmission scenarios, improving overall efficiency without requiring a completely new complex system.
2Reliability
If grant-based PUSCH transmission is used, then resource allocation control is improved, but transmission latency increases due to scheduling overhead
Solution Approach 1:
The patent implements preliminary action through grant-free PUSCH transmission (DCI format 6-0A) where resources are pre-configured and allocated without real-time scheduling requests. This allows UEs to transmit uplink data immediately when data arrives, eliminating scheduling latency while maintaining resource control through pre-configuration.
Solution Approach 2:
The patent introduces dynamic switching between grant-free (6-0A) and granted (6-0B) transmission modes. The network can dynamically select the appropriate DCI format based on traffic conditions, UE capabilities, and resource availability, optimizing the balance between control reliability and transmission latency.
3Adaptability or versatility
If multiple DCI formats are defined for different PUSCH scenarios, then transmission scenario adaptability is improved, but control signaling complexity increases
Solution Approach 1:
The patent achieves universality by designing DCI formats 6-0A and 6-0B with common structural elements (frequency domain resource assignment, time domain resource assignment, MCS) while adapting specific fields for different scenarios. This multi-functional design allows a single DCI framework to handle both grant-free and granted transmissions, reducing overall signaling complexity.
Solution Approach 2:
The patent applies local quality by configuring specific DCI fields differently based on the transmission scenario. For example, DCI format 6-0A includes fields optimized for grant-free transmission while 6-0B includes additional fields for granted transmission control. Each DCI format has locally optimized quality for its specific scenario without requiring complete redesign.
Data Source
AI summary
The present disclosure provides a method and an apparatus for resource allocation. The method for resource allocation includes: allocating, by a base station, resources for Physical Uplink Shared Channel (PUSCH) for a User Equipment (UE) in accordance with a predefined resource allocation scheme; and transmitting, by the base station, a resource allocation result to the UE via Downlink Control Information (DCI). With the embodiments of the present disclosure, it is possible to allocation resources for PUSCH, thereby solving the problem in the related art associated with lack of allocation scheme.