CPC H04L 47/365 (2013.01) | 20 Claims |
1. A method comprising:
determining, based on various network operational factors, an optimal Maximum Transmission Unit (MTU); and establishing the determined MTU,
by at least
a) configuring a higher MTU between a core network and a node B and in a wireless RAN segment and dynamically adjusting packet sizes according to capabilities of a User Equipment (UE) and Radio-conditions;
b) configuring the higher MTU in a private Citizen Broadband Radio Service (CBRS) network, wherein elements that are co-located and from the same vendor and enterprise network are easier to reconfigure for the higher MTU than elements that are not co-located;
c) initially,
1. configuring the private CBRS network with the higher MTU;
2. configuring, by an Evolved Packet Core (EPC), the UE with the higher MTU during a Public Data Network-session (PDN-session) creation; and
3. tuning the configurations of the EPC and the node B to process large-sized packets;
d) based on whether there are Download-packets (DL-packets) downloaded to the UE,
the EPC fragmenting the DL-packets to low-MTU and sending traffic toward the UE;
e) processing Upload-packets (UL-packets) from the UE as-is;
f) if the UE is capable of using the higher-MTU and the UE negotiating a Transmission Control Protocol (TCP) connection with a high-Maximum Segment Size (high-MSS) value, then the EPC sends whole packets, as-is, towards the UE; and
g) if UE-traffic suffers TCP retransmissions,
the EPC detecting the retransmission, by inspecting TCP-flow's Selective Acknowledgments (SACK) packets of the UE, and the EPC determining whether the TCP retransmissions are above a threshold, based on the detecting of the retransmissions.
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