5G Random Access Beam Number Indication for Resource Allocation
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Solution Overview
Problem
In 5G wireless communication systems, the existing random access procedure is inefficient due to the lack of suitable signaling for user equipment (UE) to notify the base station of its beam numbers, leading to low resource utilization and inefficient resource allocation, particularly in millimeter-wave systems where beam management and beam correction are critical.
Innovation Solution
A method where the user equipment (UE) reports its beam numbers through the random access procedure by including an indication of the number of beams in the Message 3, allowing the base station to configure appropriate sounding reference signals and channel state information reference signals, and the UE selects random access resources based on this information to optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the existing random access procedure is used without beam number indication, then the procedure is simple to implement, but resource utilization is low and resource allocation is inefficient
Solution Approach 1:
The patent introduces beam number indication information as an intermediary element in the random access procedure. This information is transmitted through Message 3 from UE to base station, enabling the base station to understand the UE's beamforming capabilities and allocate resources accordingly, thus resolving the contradiction between implementation simplicity and resource allocation efficiency
Solution Approach 2:
The patent implements a feedback mechanism where the UE reports its beam number capability to the base station during the random access procedure. This feedback enables the base station to adjust resource allocation and beam management strategies, improving resource utilization while maintaining procedural efficiency
2Productivity
If the base station configures sounding reference signals and channel state information reference signals based on beam numbers, then resource allocation becomes optimized, but the system complexity increases
Solution Approach 1:
The patent applies preliminary action by having the UE report its beam number capability early in the random access procedure (in Message 3). This allows the base station to pre-configure appropriate sounding reference signals and channel state information reference signals before actual data transmission begins, optimizing resource allocation without adding significant system complexity
Solution Approach 2:
The patent implements local quality by configuring different reference signal resources based on specific UE beam number capabilities. Instead of using a uniform configuration for all UEs, the base station tailors the reference signal configuration to match each UE's beamforming capabilities, improving resource allocation efficiency while managing system complexity through targeted customization
3Speed
If beam management and beam correction are implemented in millimeter-wave systems, then transmission distance and data rates improve, but the random access procedure becomes less efficient
Solution Approach 1:
The patent merges beam number indication with the existing random access Message 3 transmission. By combining the beam capability reporting function with the existing random access procedure, the system enables millimeter-wave beam management and correction capabilities without creating a separate, complex random access procedure, thus maintaining random access efficiency while achieving improved transmission rates
Data Source
AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present disclosure provides a random access method, a network node and a user equipment. With the solution of the above embodiment of the present disclosure, the performance of the UE randomly accessing the target cell can be improved.