Consecutive-Frame Random Access Resources for Group Handover
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Solution Overview
Problem
Existing cell handover mechanisms in satellite networks are inefficient and have a low success rate when handling group handovers triggered by satellite movements, as they are designed for individual device handovers and do not adequately allocate access resources for simultaneous group handovers.
Innovation Solution
A method and apparatus for determining long-periodicity and intensive random access resources by configuring random access channel occasions in N consecutive frames, using modulo operations and offset values to optimize resource allocation for group handovers, reducing signaling overheads and conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the current cell handover mechanism is used for group handover, then the existing handover procedure can be applied, but the access resources are insufficient and the handover success rate is low
Solution Approach 1:
The patent segments the access resources by creating separate random access resource pools for individual handovers and group handovers. This segmentation allows dedicated resources to be allocated for group handover scenarios, preventing resource contention and improving handover success rate when multiple terminals hand over simultaneously due to satellite movement.
Solution Approach 2:
The patent introduces a new dimension of resource allocation by configuring random access resources across N consecutive frames within a random access periodicity. This temporal extension provides additional access opportunities for group handover terminals, increasing the quantity of available access resources without adding spatial complexity.
2Reliability
If access resources are increased for group handover, then the handover success rate improves, but the signaling overhead increases
Solution Approach 1:
The patent enables terminals to self-determine their random access resources by providing configuration parameters (such as frame offsets, periodicity, and resource pool indices) rather than explicitly assigning resources to each terminal. This self-service approach reduces signaling overhead while still providing dedicated group handover resources, as terminals autonomously select appropriate resources from the configured pools based on their handover timing.
3Ease of operation
If random access resources are configured for individual handover, then single terminal handover works well, but group handover resources are insufficient
Solution Approach 1:
The patent creates a universal random access resource configuration that serves both individual and group handover scenarios. The configured resource pools and parameters can be dynamically selected based on whether the handover is individual or group-based, allowing the same infrastructure to efficiently handle both types of handovers without requiring completely separate resource allocations.
Data Source
AI summary
This application provides a random access resource determining method and related communication apparatus for improving efficiency and success rate of group handover. In the method a first communication apparatus obtains first configuration information, where the first configuration information is for configuring random access channel occasions in N consecutive frames within a first random access periodicity, where N is an integer greater than 1. The first communication apparatus determines a first random access resource based on the first configuration information, where the first random access resource is used by the first communication apparatus to access a target cell.