Dynamic subflow control for multipath transport connection in wireless communication network

Abstract

A multipath transport protocol such as multipath TCP can utilize metrics such as a wireless link condition corresponding to one or more paths as a parameter for controlling a dynamic allocation of data and control signaling over respective paths. Fault-tolerant control can enable retransmissions of packets already sent on a poor path, onto a good path. Further, the feedback, the retransmissions, and other control signaling can be provided on a separate subflow or on a UDP overlay. In this way, a multipath TCP connection can be more reliable and efficient as flow control and data flow are enhanced.

Description

technical field [0001] Aspects of the present disclosure relate generally to wireless communications and, more specifically, to control of multipath transmissions in wireless communications networks. Background technique [0002] Transmission Control Protocol (TCP) is a transport protocol that is often used for non-real-time services such as HTTP, FTP, IMAP, etc. for web browsing. A TCP connection may be established between a client, such as a user equipment (UE), and a server. TCP is on top of the IP layer and uses retransmission, flow control, and congestion control to improve the reliability of the IP layer. [0003] With flow control, the receiver side in a TCP connection controls the sender to send only as much data as the receiver has buffer capacity for the data. Thus, the sender side dynamically adjusts the transmission rate based on acknowledgments from the receiver. Furthermore, congestion control at the sender side can use a congestion window (CW) controlled by...

AI Technical Summary

Problems solved by technology

Here, multipath session establishment and maintenance may be delayed

Also, when data goes wrong on one path, starvation can occur on another good path, hindering application performance and user experience

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