US 11,729,836 B2
Early data delivery for random access procedure
Dung Pham Van, Upplands Väsby (SE); and Magnus Stattin, Upplands Väsby (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/271,368
Filed by TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
PCT Filed Sep. 26, 2019, PCT No. PCT/IB2019/058189
§ 371(c)(1), (2) Date Feb. 25, 2021,
PCT Pub. No. WO2020/065585, PCT Pub. Date Apr. 2, 2020.
Claims priority of provisional application 62/736,911, filed on Sep. 26, 2018.
Prior Publication US 2021/0329712 A1, Oct. 21, 2021
Int. Cl. H04W 74/08 (2009.01); H04W 12/106 (2021.01); H04W 74/00 (2009.01); H04W 28/06 (2009.01); H04W 80/02 (2009.01)
CPC H04W 74/0841 (2013.01) [H04W 12/106 (2021.01); H04W 28/06 (2013.01); H04W 74/008 (2013.01); H04W 80/02 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for early data transmission (EDT) performed by a wireless device, the method comprising:
assembling a random access message 3 that includes uplink data for random access EDT;
transmitting the random access message 3 to a network node;
receiving a random access message 4 from the network node;
determining whether the random access message 4 includes a successful integrity check validating authenticity of the network node; and
upon determining the random access message 4 includes a successful integrity check, discarding transmission protocol information corresponding to the uplink data in the random access message 3, wherein determining whether the random access message 4 includes a successful integrity check comprises a packet data convergence protocol (PDCP) entity receiving an integrity check indication on a signaling radio bearer, and the method further comprises communicating the integrity check indication to a PDCP entity associated with a radio bearer associated with the uplink data in the random access message 3 and wherein the PDCP entity associated with the radio bearer associated with the uplink data in the random access message 3 starts a PDCP service data unit (SDU) discard timer after determining whether the random access message 4 includes a successful integrity check.