User-Plane Local Data Transfer via Core Network Parameter Negotiation
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Solution Overview
Problem
Current 5G mobile communication technology does not support direct transfer of local data from an access network device to a terminal device through the user plane.
Innovation Solution
A communication method and apparatus that enables the transfer of local data from an access network device to a terminal device through the user plane by exchanging transmission parameters and resource reservations with a core network device, ensuring compatibility with existing protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If local data of access network device is transferred to terminal device through user plane, then data transfer efficiency is improved, but protocol compatibility is worsened
Solution Approach 1:
The core network device acts as an intermediary to enable direct data transfer from access network device to terminal device through user plane. The core network device receives transmission requirement messages from the access network device, allocates resources, and sends transmission requirement acknowledgment messages back, thereby facilitating protocol-compatible direct transfer without requiring changes to existing 5G protocols.
Solution Approach 2:
Before actual data transfer, the access network device sends transmission requirement messages to the core network device to preliminarily allocate resources and establish transmission parameters. This preliminary action ensures that when data transfer occurs, all necessary conditions are met and protocol compatibility is maintained, as the core network device prepares the transmission path in advance according to standard procedures.
2Reliability
If transmission parameters are exchanged between access network device and core network device, then transmission reliability is improved, but communication complexity is worsened
Solution Approach 1:
The core network device sends transmission requirement acknowledgment messages back to the access network device after receiving transmission requirement messages. This feedback mechanism ensures that the access network device receives confirmed transmission parameters and resource allocation, improving transmission reliability while the automated feedback process actually reduces communication complexity by eliminating manual configuration needs.
Data Source
AI summary
A communication method and a related apparatus are provided. The method includes: An access network device sends a transmission requirement message to a core network device, where the transmission requirement message indicates a transmission parameter that the access network device expects to use when the access network device sends first data to a terminal device. The access network device receives a transmission requirement acknowledgment message from the core network device, where the transmission requirement acknowledgment message indicates a transmission parameter that is allowed by the core network device and that is used when the access network device sends the first data to the terminal device. The access network device sends the first data to the terminal device based on the transmission requirement acknowledgment message.