Communication Method for Synchronized Multi-Station Data Transmission
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Solution Overview
Problem
In multi-station coordinated transmission, the efficiency is affected due to asynchronous transmission by access network devices, as the control anchor (BM-SC) cannot ensure simultaneous data delivery to user equipment (UE), leading to potential packet loss and reduced transmission efficiency.
Innovation Solution
A first access network device sends data to a second access network device and receives feedback to synchronize data transmission, ensuring both devices send data on the same time domain resource, adjusting for unsuccessful data receipt and optimizing channel measurements to enhance coordination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the control anchor (BM-SC) distributes data to multiple access network devices, then multi-station coordinated transmission can be implemented, but asynchronous transmission occurs causing reduced transmission efficiency
Solution Approach 1:
The patent introduces a feedback mechanism where the second access network device sends feedback information to the first access network device about successfully received data. This feedback loop enables the control anchor to synchronize transmission timing and ensure reliable data delivery across multiple access network devices, resolving the contradiction between transmission efficiency and reliability.
Solution Approach 2:
The patent implements preliminary actions by having the first access network device send data to the second access network device before actual transmission to the terminal. This preliminary data transfer allows the control anchor to verify data receipt status and coordinate transmission timing in advance, preventing asynchronous transmission and ensuring both efficiency and reliability.
2Measurement precision
If feedback information includes detailed data identifiers, then data receipt can be accurately determined, but feedback overhead increases
Solution Approach 1:
The patent extracts only the essential information needed for data receipt determination from the feedback message. Instead of transmitting complete data identifiers, the system uses selective feedback mechanisms that convey only the necessary acknowledgment information, reducing feedback overhead while maintaining accurate data receipt determination.
Solution Approach 2:
The patent applies local quality by differentiating the level of detail in feedback information based on specific data characteristics. For data that requires precise tracking, detailed identifiers are used; for data where receipt is straightforward to confirm, simplified feedback is employed. This selective approach optimizes the balance between measurement precision and feedback overhead.
Data Source
AI summary
This application provides a communication method, apparatus, and system, and belongs to the field of communication technologies, to avoid impact on efficiency of multi-station coordinated transmission caused by asynchronous transmission. In the method, after distributing data of a service of a terminal to a second access network device, a first access network device as a control anchor of multi-station coordinated transmission may determine, based on a feedback of the second access network device, that the second access network device has successfully received at least a part of the data, for example, first data. In this case, both the first access network device and the second access network device obtain the same first data, to send the first data to the terminal on a same time domain resource, so as to avoid impact on efficiency of multi-station coordinated transmission caused by asynchronous transmission.