Multi-Carrier Random Access Message Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently performing random access procedures due to resource collisions, particularly in next-generation mobile communication systems requiring high data traffic, increased transfer rates, and low latency, where existing techniques struggle to manage the increased demand and diversity of carriers.
Innovation Solution
A method is introduced where a first message and a third message for performing a random access procedure are transmitted using different carriers, preventing resource collisions and optimizing the random access process in wireless communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If random access procedure uses same carrier for first message and third message, then procedure simplicity is maintained, but resource collision occurs and access efficiency deteriorates
Solution Approach 1:
The random access procedure is segmented into different phases (first message transmission and third message transmission) that utilize different carriers. This segmentation prevents resource collision between messages while maintaining procedural clarity, directly resolving the contradiction between access efficiency and carrier management complexity.
Solution Approach 2:
The solution transitions from single-carrier random access to multi-carrier random access by introducing frequency domain diversity. By distributing messages across different carriers (frequency resources), the system achieves higher access efficiency without excessive complexity increase, as carriers can be managed through standardized selection mechanisms.
2Productivity
If single carrier is used for random access, then device complexity is reduced, but resource collision increases and productivity decreases
Solution Approach 1:
Multiple carriers are configured to serve universal purposes in the random access procedure, with each carrier capable of handling specific message transmissions. This multi-functionality approach enables higher data transfer rates through parallel transmissions while managing complexity through standardized carrier configuration protocols.
Solution Approach 2:
The system dynamically selects and configures carriers based on traffic conditions and access requirements. By changing carrier parameters (frequency, bandwidth, timing) adaptively, the system achieves high productivity without fixed complex configurations, resolving the contradiction between data transfer rate and carrier configuration complexity.
3Reliability
If resource allocation is simplified, then ease of operation is improved, but resource collision occurs and reliability deteriorates
Solution Approach 1:
The random access procedure incorporates feedback mechanisms where the base station signals carrier allocation decisions to the user equipment. This feedback loop ensures reliable resource allocation while simplifying user-side operations, as the UE follows predetermined procedures guided by base station instructions rather than performing complex carrier selection.
Solution Approach 2:
The base station acts as an intermediary that manages carrier allocation and coordination between multiple users. This intermediary function ensures high reliability by centralizing resource management decisions while keeping user equipment operations simple, as UE devices only need to follow standardized procedures rather than independently manage carrier resources.
Data Source
Figure 1(a)~1(b)
Figure 2
Figure 3
AI summary
The present specification provides a method for transmitting, by a terminal, a message for execution of a random access procedure in a wireless communication system, the method comprising the steps of: receiving a system information block (SIB) from a base station; transmitting a first message, which is a random access preamble, to the base station on the basis of the SIB; receiving a second message, which is a response to the first message, from the base station; and transmitting a third message to the base station, using a carrier different from a carrier used to transmit the first message.