Random Access Occasion Allocation for 5G Base Stations
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Solution Overview
Problem
In 5G wireless communication, the allocation of random access occasions (ROs) to synchronization signaling blocks (SSBs) often results in wasted RO resources and increased latency due to uneven distribution, which is not conducive to meeting low-latency service requirements.
Innovation Solution
A method is introduced where the base station determines the number of SSBs and ROs, calculates the remainder, and establishes one-to-one correspondences between ROs and SSBs if the remainder is greater than or equal to a target number, optimizing resource allocation and enabling efficient random access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If ROs are evenly allocated to SSBs, then the allocation method is simple, but RO resources are wasted and latency increases
Solution Approach 1:
The patent changes the allocation parameters by establishing one-to-one correspondence between ROs and SSBs based on the remainder value, rather than using fixed even allocation. This dynamic parameter adjustment optimizes resource utilization and reduces latency while maintaining implementation simplicity.
2Ease of operation
If ROs are evenly allocated to SSBs, then the allocation process is straightforward, but RO resource utilization decreases
Solution Approach 1:
The patent dynamically adjusts the allocation parameters based on the remainder value calculated from dividing RO count by SSB count. When remainder is greater than or equal to target number, one-to-one correspondence is established; otherwise, even allocation is used. This parameter-based approach improves resource utilization while keeping the process simple.
3Productivity
If one-to-one correspondence is established between ROs and SSBs, then resource utilization improves, but allocation complexity increases
Solution Approach 1:
The patent uses a clear parameter threshold (remainder >= target number) to determine allocation mode. This parameter-based decision mechanism achieves high resource utilization through one-to-one correspondence when conditions permit, while falling back to simpler even allocation when conditions do not, thus controlling complexity.
Solution Approach 2:
The patent segments the allocation process into two distinct modes: one-to-one correspondence mode and even allocation mode. This segmentation allows the system to apply the optimal allocation strategy based on current conditions, improving productivity when needed while maintaining simplicity as a fallback.
Data Source
AI summary
A method for configuring random access occasion (RO), a method for random access, and a base station are provided. The method of configuring the RO includes: determining a current number of SSBs to be configured for sending and a number of ROs; sending the number of SSBs and the number of ROs to UE and dividing the number of ROs by the current number of SSBs to obtain a remainder number; determining whether the remainder number is greater than or equal to a target number according to a configuration rule, where the target number is determined based on the current number of SSBs; and in response to that the remainder number is greater than or equal to the target number, establishing one-to-one correspondences between the remainder number of ROs and the remainder number of SSBs.