Random Access Beam Capability Reporting for 5G Resource Allocation
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Solution Overview
Problem
In 5G wireless communication systems, especially in millimeter-wave bands, the lack of suitable signaling for user equipment (UE) to notify the base station of its beam-number capability leads to low resource utilization efficiency, as existing methods fail to reasonably configure resources like sounding reference signals (SRS) and channel state information reference signals (CSI-RS) based on the UE's beam capabilities.
Innovation Solution
A method where the UE reports its beam-number capability through the random access procedure, allowing the base station to allocate appropriate resources by including an indication of the number of beams in the random access message, enabling more efficient resource allocation and beam management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE does not report beam-number capability through random access procedure, then the random access signaling remains simple, but the base station cannot reasonably configure resources like SRS and CSI-RS based on UE beam capabilities, leading to low resource utilization efficiency
Solution Approach 1:
The patent merges the beam-number capability reporting function with the existing random access procedure by including the beam-number indication in the random access message (e.g., Msg3 or Msg5). This combination allows the base station to obtain UE beam capabilities during the random access process without adding separate signaling overhead, thereby improving resource utilization efficiency while maintaining signaling simplicity.
2Productivity
If the base station allocates resources without knowing UE beam capabilities, then the random access procedure remains straightforward, but resource allocation for SRS and CSI-RS cannot be optimized, reducing system efficiency
Solution Approach 1:
The patent implements preliminary action by having the UE report its beam-number capability during the random access procedure, before the base station proceeds with resource allocation. This advance information allows the base station to optimally configure SRS and CSI-RS resources based on the UE's actual beam capabilities, improving system efficiency without requiring additional information exchange later.
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.