Random Access Report Routing for Secondary Base Stations
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Solution Overview
Problem
In dual-connectivity (DC) systems, there is a challenge in efficiently transmitting random access reports related to secondary base stations, as existing methods do not effectively address how to send these reports from a terminal to the appropriate secondary base station, leading to potential random access failures due to improper configuration.
Innovation Solution
A method is provided where a terminal sends a first message to a primary base station, which includes containers with random access reports and primary secondary cell identifiers, allowing the primary base station to forward these reports to the correct secondary base station without parsing the content, thereby reducing signaling overheads and simplifying operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal sends random access reports to the primary base station for forwarding to secondary base stations, then the random access configuration can be optimized, but the signaling overheads between base stations increase
Solution Approach 1:
The patent extracts only the necessary container information (identifier and possibly size) from the full container data, allowing the primary base station to forward reports to secondary base stations without transmitting the entire container content. This extraction approach maintains the ability to optimize random access configuration while significantly reducing signaling overhead between base stations.
Solution Approach 2:
The patent introduces an intermediary information structure (container identifier and metadata) that mediates between the terminal's random access reports and the secondary base stations. This intermediary allows the primary base station to route reports efficiently without parsing or transmitting the full container content, thus reducing signaling overhead while maintaining reliability.
2Reliability
If the primary base station parses container content to identify the corresponding secondary base station, then accurate routing is achieved, but the operation complexity increases
Solution Approach 1:
The patent applies preliminary action by including the container identifier and relevant metadata in the message from the terminal to the primary base station before the forwarding decision needs to be made. This allows the primary base station to route the container to the correct secondary base station based on pre-provided identification information, eliminating the need for complex parsing operations and reducing operational complexity while maintaining routing accuracy.
3Reliability
If the terminal includes detailed information about each container in the first message, then the primary base station can accurately route reports, but the message size and signaling overhead increase
Solution Approach 1:
The patent extracts only the essential routing information (container identifier and minimal metadata) from the full container content, including this extracted information in the first message to the primary base station. This extraction approach enables accurate routing while keeping the message size compact and signaling overhead low, as only the necessary identification fields are transmitted rather than the complete container data.
Data Source
AI summary
A random access report transmission method and a communication apparatus. A terminal records a random access report of a secondary base station (in other words, a secondary cell group) by using a container. The terminal indicates, in response to sending the container to a primary base station, a primary secondary cell identifier corresponding to the container to the primary base station, so that the primary base station can forward the container to a corresponding secondary base station without parsing the container. One container includes one random access report, all random access reports that can be recorded by the terminal, or one or more random access reports of one primary secondary cell.