Patent ID: 9380635
Filing Date: 2016-06-28
CPC Classification: H04W

Claim Text:
1. In a wireless communications device (WCD), a method for mitigating transmission control protocol (TCP) data session degradation over a radio link connection with an end server, the method comprising: monitoring a bandwidth allocation for at least one of an uplink communication and a downlink communication with the end server; detecting a change in the bandwidth allocation, wherein detecting the change in the bandwidth allocation comprises determining whether a change in at least one of an uplink radio access bearer (RAB) configuration and a downlink RAB configuration has occurred; in response to detecting the change in the bandwidth allocation, performing a real-time round trip time (RTT) measurement utilizing round trip time intervals corresponding to segments of a User Datagram Protocol (UDP) datagram being transmitted at a lower protocol layer; and modifying at least one of a TCP receive window (RWIN) and a TCP transmit window (TWIN) using the real-time RTT measurement.