US 9,794,181 B2Granted

Dynamic initial congestion window modification

AssigneeVerizon Digital Media Services Inc.

InventorsMarcel Eric Schechner Flores, Amir Reza Khakpour, Robert J. Peters

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Abstract

Some embodiments increase throughput across a connection between a host and a client by initializing the congestion window for that connection dynamically using a previously settled value from a prior instance of the connection established between the same or similar endpoints. An initialization agent tracks congestion window values for previously established connections between a host and various clients. For the tracked congestion window values of each monitored connection, the initialization agent stores an address identifying the client endpoint. When establishing a new connection, the initialization agent determines if the new connection is a recurring connection. A new connection is recurring when the new connection client address is similar or related to an address identified for a previous monitored connection. For a recurring connection, the initialization agent initializes the new connection congestion window using a value derived from the tracked congestion window values of the recurring connection.

Claims15

Dependent claims

A system comprising:

a memory storing computer-executable instructions;
and
a computer processor in communication with the memory, the computer-executable instructions programming the computer processor in:
monitoring a congestion window of a first connection that is established with a first client, wherein the first connection congestion window regulates a number of outstanding segments sent to the first client over the first connection;
recording after terminating the first connection, a first connection congestion value of the first connection in conjunction with an address associated with the first client as a result of said monitoring;
and
establishing a second connection with a second client, wherein establishing the second connection comprises (i) performing a connection establishment handshake with the second client, (ii) identifying the second connection as a recurring connection related to the first connection based on an address of the second client and the address associated with the first client, and (iii) initializing based on said identifying, a congestion window of the second connection with the first connection congestion window value of the first connection as part of said connection establishment handshake for the second connection and in advance of sending a first data packet to the second client over the second connection.

4 more elements

A computer-implemented method performed by execution of a processor of at least one machine, the method comprising:

tracking a first connection congestion window value used in regulating outstanding bytes sent from a host over an established first connection to a first client;
recording an address associated with the first client in conjunction with recording the first connection congestion window value;
terminating the first connection;
receiving a request to establish a second connection with the host from a second client;
and establishing the second connection during a connection establishment handshake (i) with the first connection congestion window value in response to identifying the second connection as a recurring connection related to the first connection based on an address of the second client establishing the second connection matching to the address of the first client having established the first connection, and (ii) with a default starting value in response to the address of the second client establishing the second connection not matching to the address of the first client having established the first connection, and wherein the default starting value is not based on the first connection congestion window value and the default starting value is less than the first connection congestion window value.

2 more elements

Dependencies are inferred from the claim text.