Base Station Traffic Indication for Wireless CoMP Delay
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Solution Overview
Problem
Backhaul delay between base stations in wireless communication systems restricts data transmission and leads to inefficient radio resource management, causing passive link adaptation and resource allocation inefficiencies in inter-base station CoMP technologies.
Innovation Solution
A signal transmission method and device that allows base stations to exchange information on traffic waiting to be transmitted, considering backhaul delay, by generating and transmitting transmission-waiting traffic indication information to adjust radio resource allocation and perform efficient packet scheduling and link adaptation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If base stations exchange CoMP information through backhaul connection, then coordinated multi-point transmission and reception can be achieved, but backhaul delay restricts data transmission and reduces radio resource management efficiency
Solution Approach 1:
The patent applies preliminary action by having base stations predict traffic waiting to be transmitted in advance and share this prediction information through backhaul connections before actual data transmission occurs. This allows neighboring base stations to proactively adjust their resource allocation and link adaptation parameters, compensating for the inherent backhaul delay and preventing transmission restrictions.
2Productivity
If base stations perform link adaptation based on received CoMP information, then radio resource management can be optimized, but backhaul delay causes passive link adaptation and resource allocation inefficiency
Solution Approach 1:
The patent implements preliminary action by performing link adaptation based on predicted traffic information before actual data transmission. Base stations use the predicted traffic waiting information to proactively configure link adaptation parameters and resource allocation, rather than passively reacting to delayed CoMP information, thereby maintaining high radio resource management efficiency despite backhaul delays.
3Measurement precision
If base stations transmit CoMP information frequently to maintain up-to-date resource allocation, then resource allocation accuracy improves, but backhaul bandwidth consumption and processing overhead increase
Solution Approach 1:
The patent applies the extraction principle by isolating and transmitting only the critical predicted traffic waiting information, rather than exchanging complete and frequent CoMP information sets. This selective information exchange maintains sufficient accuracy for resource allocation decisions while significantly reducing backhaul bandwidth consumption and processing overhead compared to frequent full CoMP information updates.
Data Source
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AI summary
A method for transmitting a signal of a base station in a wireless communication system, according to an embodiment of the present invention, comprises the steps of: transmitting transmission standby traffic indication information to a node when a first traffic is received in a first duration; and determining whether to transmit the transmission standby traffic indication information to the node in a second duration, on the basis of whether the transmission standby traffic indication information has been transmitted in the first duration and whether a second traffic has been received in the second duration.