Uplink Signal Transmission Random Access Method Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently providing services due to the complexity of random access methods in 5G communication systems, particularly in IoT environments, where load balancing and conflict resolution are critical.
Innovation Solution
A method for a terminal in a wireless communication system to determine and use either a four-step or a two-step random access method based on received resource configuration information and a predetermined threshold, allowing for flexible resource allocation and conflict management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a four-step random access method is used, then conflict resolution capability is improved, but transmission time and productivity deteriorate
Solution Approach 1:
The patent implements dynamic random access method selection between four-step and two-step procedures based on real-time channel conditions and traffic characteristics. The base station configures different random access parameters and the terminal selects the appropriate method adaptively, transforming the static random access approach into a dynamic one that optimizes both conflict resolution and transmission time根据不同场景灵活切换
Solution Approach 2:
The patent changes key parameters such as random access preamble format, message structure, and resource allocation configurations to support both four-step and two-step random access methods. By modifying these parameters dynamically, the system can switch between methods to balance conflict resolution capability and transmission efficiency
2Productivity
If a two-step random access method is used, then transmission time is reduced, but conflict resolution capability deteriorates
Solution Approach 1:
The system dynamically selects between two-step and four-step random access methods based on channel conditions and traffic load. When channel conditions are good and traffic is light, the two-step method is preferred for fast access. When conflicts are detected or channel conditions deteriorate, the system switches to four-step method for better conflict resolution
Solution Approach 2:
The patent modifies random access parameters including message structure (combining data and control in MsgA for two-step), resource allocation, and preamble formats to enable the two-step method to achieve fast transmission while maintaining configurable conflict resolution capabilities through parameter optimization
3Adaptability or versatility
If multiple random access methods are supported, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic method selection where the terminal adapts between four-step and two-step random access based on configured parameters and detected conditions. This dynamic approach provides versatility while managing complexity by using decision algorithms rather than simultaneously implementing all features of both methods
Solution Approach 2:
The base station configures random access parameters including method selection indicators, resource allocations, and message formats that guide the terminal's behavior. By controlling complexity through centralized parameter configuration rather than distributed complex decision-making, the system achieves adaptability with manageable terminal complexity
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The present disclosure provides a transmission method of an uplink signal and a user equipment thereof. The transmission method includes: transmitting a first message comprising a PRACH (Physical Random Access Channel) preamble and data part; receiving a fallback random access response comprising configuration information associated with a transport block size for transmitting a PUSCH (Physical Uplink Shared Channel); determining the transport block size for transmitting the PUSCH by comparing the received configuration information associated with the transport block size with a transport block size of the first message; and transmitting the PUSCH comprising the data part based on the determined the transport block size for transmitting a PUSCH.