Joint AP Transmission Buffering to Cut Air Interface Load
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Solution Overview
Problem
Existing communication systems face issues with high occupancy of air interface resources and delays when multiple access points coordinate data transmission, affecting transmission quality and network load.
Innovation Solution
A communication apparatus that includes a sending module to send a buffer indication to secondary access points, allowing them to buffer data before transmission, and a processing module to determine if a joint transmission is needed, reducing air interface resource occupancy and delay by coordinating data delivery among access points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the master AP sends data to coordinated APs using wireless sharing, then data can be shared among APs, but a large quantity of air interface resources are occupied
Solution Approach 1:
The patent introduces a wired connection as an intermediary medium between the master AP and coordinated APs for data sharing. Instead of directly using wireless air interface for AP-to-AP data transfer, the system uses a wired backbone network as a mediator, which has higher bandwidth and does not consume wireless air interface resources. This resolves the contradiction by providing an alternative data sharing path that maintains adaptability while reducing air interface resource occupancy.
2Quantity of substance
If the master AP sends data to coordinated APs using wired sharing, then air interface resources are saved, but a delay is high which affects transmission quality
Solution Approach 1:
The patent implements preliminary action by having the master AP send data to coordinated APs in advance through the wired connection before the actual downlink transmission is needed. The coordinated APs buffer this pre-transferred data and are ready to immediately transmit it to STAs when required, eliminating the need for real-time wired data transfer during transmission. This approach saves air interface resources while minimizing delay by preparing data beforehand.
3Reliability
If the master AP instructs coordinated APs to perform joint transmission, then transmission quality can be improved, but network load increases
Solution Approach 1:
The patent applies segmentation by dividing the network into a master AP that performs coordination functions and coordinated APs that execute transmission tasks. The master AP segments the decision-making process (sending buffer status indications and joint transmission indications) from the data transmission process (performed by coordinated APs). This segmentation allows the system to improve transmission quality through coordinated transmission while distributing network load across multiple APs, preventing any single AP from becoming a bottleneck.
Data Source
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AI summary
Embodiments of this application provide a joint transmission method and an AP, and relate to the communications field. In the joint transmission method provided in this application, a first AP sends a buffer indication to a second AP, so that the second AP buffers data in a process in which the first AP sends the data to at least one STA. Therefore, a delay can be reduced while air interface resources occupied are reduced, and user experience is effectively improved.