Wireless Backhaul Base Station Coordination for Reduced Transmission Delay
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Solution Overview
Problem
Coordinated multi-point (CoMP) technology in base stations experiences significant delays due to the use of X2 interfaces for wired transmission, leading to reduced data transmission efficiency.
Innovation Solution
A data transmission method where a second base station receives a message from a first base station requesting radio resource allocation, determines the resource location based on provided scheduling information, and sends a response, enabling multi-cell coordinated downlink transmission to improve efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CoMP technology uses X2 interface for wired transmission between base stations, then coordinated transmission can be achieved, but transmission delay increases significantly and data transmission efficiency decreases
Solution Approach 1:
The patent replaces the traditional wired X2 interface transmission mechanism with a wireless backhaul communication mechanism. Base stations transmit resource scheduling information and data through wireless communication to the terminal, eliminating the need for wired connections between base stations and reducing transmission delay while maintaining coordinated transmission capability.
Solution Approach 2:
The patent changes the transmission dimension from wired physical interface (X2 interface) to wireless communication dimension. By using wireless backhaul for base station communication and direct wireless transmission for data, the system operates in a different communication dimension that avoids the bottlenecks of wired infrastructure.
2Reliability
If base stations interact scheduling resources and data every other period, then coordinated transmission is maintained, but data transmission efficiency is greatly reduced
Solution Approach 1:
The patent enables continuous data transmission between base stations and terminals through wireless backhaul communication. Instead of periodic interactions, the system maintains continuous connection and data flow, allowing real-time resource scheduling and data transmission without interruption, thereby significantly improving data transmission efficiency.
Solution Approach 2:
The patent implements preliminary resource scheduling where base stations prepare and transmit resource allocation information in advance through wireless communication. This allows terminals to receive scheduling information before data transmission begins, enabling efficient resource utilization and reducing waiting time.
3Power
If CoMP technology transmits PDSCH data to cell edge users, then useful signal power increases, but interference signal conversion requires complex coordination
Solution Approach 1:
The patent enables base stations to autonomously determine and transmit resource scheduling information to terminals through wireless communication. Each base station independently manages its own resource allocation and coordination, reducing the need for complex inter-base station coordination while maintaining effective interference management and signal power optimization.
Data Source
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AI summary
This application discloses a data transmission method and device to improve transmission efficiency of terminal data. The method of the embodiments of this application includes: receiving, by a second base station, a first message from a first base station, where the first message is used to request the second base station to allocate a radio resource for a specific bearer, and the first message includes resource scheduling information; determining, by the second base station, based on the resource scheduling information, a resource location of the radio resource and scheduling the radio resource; and sending, by the second base station, a first response message in response to the first message to the first base station.