US Patent No. 11,071,159

USE OF GROUP DELAY VARIATION AS A BASIS TO CONTROL CONFIGURATION OF DUAL-CONNECTIVITY SERVICE


Patent No. 11,071,159
Issue Date July 20, 2021
Title Use Of Group Delay Variation As A Basis To Control Configuration Of Dual-connectivity Service
Inventorship Sreekar Marupaduga, Overland Park, KS (US)
Assignee Sprint Spectrum L.P., Overland Park, KS (US)

Claim of US Patent No. 11,071,159


1. A method for controlling configuration of dual-connectivity service for a user equipment device (UE),wherein the dual-connectivity service comprises the UE being served concurrently over a first connection according to a first radio access technology (RAT) and over a second connection according to a second RAT, the method comprising:
determining, by a first access node with which the UE has the first connection according to the first RAT, group delay variations of multiple candidate second access nodes, including determining a group delay variation respectively of each second access node of the multiple candidate second access nodes;
selecting by the first access node one of the second access nodes from among the multiple candidate second access nodes, the selecting being based on a comparison of the determined group delay variation of the one second access node with the determined group delay variation respectively of each other second access node of the multiple candidate second access node; and
based on the selecting, configuring the dual-connectivity service for the UE, with the UE having the first connection with the first access node and having the second connection with the selected second access node,
wherein configuring the dual-connectivity service for the UE with the UE having the first connection with the first access node and having the second connection with the selected second access node comprises (i) engaging by the first access node in signaling to configure the second connection between the UE and the selected second access node and (ii) engaging by the first access node in signaling to establish for the UE a split bearer so that the first access node and the selected second access node can both serve the UE with data communications.