US 11,844,132 B2
User plane early data transmission (EDT) message 4 (MSG4) loss
Jaemin Han, Portland, OR (US); and Bharat Shrestha, Hillsboro, OR (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 17/287,000
Filed by APPLE INC., Cupertino, CA (US)
PCT Filed Oct. 24, 2019, PCT No. PCT/US2019/057793
§ 371(c)(1), (2) Date Apr. 20, 2021,
PCT Pub. No. WO2020/086804, PCT Pub. Date Apr. 30, 2020.
Claims priority of provisional application 62/750,678, filed on Oct. 25, 2018.
Prior Publication US 2021/0392714 A1, Dec. 16, 2021
Int. Cl. H04W 76/19 (2018.01); H04W 76/30 (2018.01); H04W 36/00 (2009.01); H04L 1/1867 (2023.01)
CPC H04W 76/19 (2018.02) [H04L 1/1896 (2013.01); H04W 36/0079 (2018.08); H04W 76/30 (2018.02)] 20 Claims
OG exemplary drawing
 
1. An apparatus of an evolved node B (eNB) operable for early data transmission (EDT) in a user plane (UP) in a cellular internet of things (CIoT) evolved packet system (EPS) network, the apparatus comprising:
one or more processors configured to:
encode, at the eNB for transmission to a user equipment (UE), a message 4 (Msg4) including a resume identifier (ID) and a next-hop chaining count (NCC);
determine, at the eNB, a delivery status of the Msg4 to the UE; and
encode, at the eNB for transmission to a previous eNB of the UE, one or more of an EDT failure indicator or the resume ID; and
a memory interface configured to store the Msg4 in a memory.