METHODS AND ARRANGEMENTS FOR IMPROVING TRANSMISSION CONTROL PROTOCOL PERFORMANCE IN A CELLULAR NETWORK
First Claim
1. A method in a network node for improving transmission control protocol, TCP, performance in a cellular network, which network node handles TCP packet transferral between a user equipment and a server in the cellular network, which user equipment and which server are configured to adapt a retransmission timeout, RTO, setting based on round trip times, RTTs, for performed TCP packet transferrals, the method comprising:
- when obtaining an indication of a handover outage being upcoming for the user equipment, deliberately delaying, in a time period preceding the indicated handover outage, a transferal of a TCP packet between the server and the user equipment to increase the round trip time for the TCP packet.
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Accused Products
Abstract
A method in a network node for improving transmission control protocol, TCP, performance in a cellular network is provided. The network node handles TCP packet transferral between a user equipment and a server in the cellular network. The user equipment and the server are configured to adapt a retransmission timeout setting based on round trip times for performed TCP packet transferrals. When the network node obtains an indication of a handover outage being upcoming for the user equipment, the network node deliberately delays, in a time period preceding the indicated handover outage, a transferal of a TCP packet between the server and the user equipment to increase the round trip time for the TCP packet.
72 Citations
22 Claims
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1. A method in a network node for improving transmission control protocol, TCP, performance in a cellular network, which network node handles TCP packet transferral between a user equipment and a server in the cellular network, which user equipment and which server are configured to adapt a retransmission timeout, RTO, setting based on round trip times, RTTs, for performed TCP packet transferrals, the method comprising:
when obtaining an indication of a handover outage being upcoming for the user equipment, deliberately delaying, in a time period preceding the indicated handover outage, a transferal of a TCP packet between the server and the user equipment to increase the round trip time for the TCP packet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A network node for improving transmission control protocol, TCP, performance in a cellular network, which network node is adapted to handle TCP packet transferral between a user equipment and a server in the cellular network, which user equipment and which server are configured to adapt a retransmission timeout setting based on round trip times for performed TCP packet transferrals, the network node comprising:
a delaying unit, which delaying unit is configured to, when obtaining an indication of a handover outage being upcoming for the user equipment, deliberately delay, in a time period preceding the indicated handover outage, a transferal of a TCP packet between the server and the user equipment to increase the round trip time for the TCP packet. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
Specification