Base Station Data Transmission with Selective Anchor Relocation
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Solution Overview
Problem
The existing wireless communication systems face challenges in managing efficient data transmission during state transitions in RRC_IDLE and RRC_INACTIVE states, leading to excessive signaling overhead and high transmission delays due to inefficient RAN update procedures.
Innovation Solution
A method for data transmission that involves a first base station requesting data transmission from a second base station, determining whether to transmit the data or perform anchor relocation based on data transmission information and assistant information, and sending a response to the first base station, utilizing enhanced messages and assistant information to manage small data transmission in RRC_INACTIVE state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional RAN update procedures are used for state transitions, then network coverage and connectivity are maintained, but signaling overhead increases and transmission delays occur
Solution Approach 1:
The patent performs RAN update procedures in advance during state transitions (RRC_IDLE to RRC_CONNECTED, or RRC_INACTIVE to RRC_CONNECTED). By proactively updating the RAN before actual data transmission is needed, the system eliminates the need for time-consuming update procedures during data transmission, thereby reducing transmission delays while maintaining network connectivity
Solution Approach 2:
The patent segments the RAN update procedure from the data transmission procedure. Instead of performing RAN update and data transmission in a sequential manner that causes delays, the update is performed as a separate preliminary action, allowing data transmission to proceed without waiting for the update to complete
2Productivity
If anchor relocation is performed frequently to optimize data transmission, then transmission efficiency improves, but signaling overhead increases
Solution Approach 1:
The patent applies partial anchor relocation by selectively relocating only the data transmission anchor while keeping the control plane anchor stationary. This partial action approach optimizes data transmission efficiency by moving only the necessary anchor point, avoiding the excessive signaling overhead that would result from relocating the entire anchor set or performing full anchor relocation procedures
Solution Approach 2:
The patent implements local quality optimization by differentiating between control plane functions and user plane functions. The control plane anchor remains fixed to maintain stable control signaling, while the user plane anchor is selectively relocated to optimize data transmission paths. This localized approach to anchor relocation improves data transmission efficiency without generating excessive signaling overhead from moving all anchor components
Data Source
AI summary
Embodiments of the present application relate to a method and apparatus for data transmission. An exemplary method includes: receiving a data transmission request from a first base station, in a second base station, wherein the data transmission request indicates data transmission information on a data transmission; determining whether to transmit the data transmission by the second base station or make an anchor relocation for the data transmission based on the data transmission information and assistant information associated with the data transmission; and transmitting a data transmission response to the first base station based on the determining.