US 11,916,925 B2
Method for improving data transmission security
Magnus Stattin, Upplands Vasby (SE); Vesa Lehtovirta, Espoo (FI); Prajwol Kumar Nakarmi, Sollentuna (SE); and Dung Pham Van, Upplands Vasby (SE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Filed on Jan. 23, 2023, as Appl. No. 18/100,349.
Application 18/100,349 is a continuation of application No. 16/963,239, granted, now 11,563,749, previously published as PCT/IB2019/051199, filed on Feb. 14, 2019.
Claims priority of provisional application 62/630,867, filed on Feb. 15, 2018.
Prior Publication US 2023/0239309 A1, Jul. 27, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 9/40 (2022.01); H04L 9/32 (2006.01)
CPC H04L 63/123 (2013.01) [H04L 9/3236 (2013.01); H04L 63/0428 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for improving data transmission security at a network node, comprising:
sending, from a first network node to a user equipment, a preamble message after the user equipment is released by a second network node from a previous connection;
receiving, from a user equipment at the first network node, a connection request message including a token calculated based a hash value and an integrity key, wherein the hash value represents data included in the connection request message;
verifying, at the first network node, the token included in the connection request message by computing the hash value; and
forwarding, from the first network node to a gateway, the data in response to verifying the token.