US 12,192,877 B2
Proactive switching of V2X communication from sidelink connection to cellular connection
Lianghai Ji, Aalborg (DK); Jakob Lindbjerg Buthler, Aalborg (DK); Vinh Van Phan, Oulu (FI); Ling Yu, Kauniainen (FI); Hajo Bakker, Eberdingen (DE); Rudraksh Shrivastava, Erligheim (DE); Bernhard Wegmann, Holzkirchen (DE); and Xiang Xu, Nanjing (CN)
Assigned to Nokia Technologies Oy, Espoo, FL (US)
Appl. No. 17/624,546
Filed by Nokia Technologies Oy, Espoo (FI)
PCT Filed Jul. 4, 2019, PCT No. PCT/CN2019/094718
§ 371(c)(1), (2) Date Jan. 3, 2022,
PCT Pub. No. WO2021/000322, PCT Pub. Date Jan. 7, 2021.
Prior Publication US 2022/0248301 A1, Aug. 4, 2022
Int. Cl. H04W 40/30 (2009.01); H04L 5/00 (2006.01); H04W 40/24 (2009.01); H04W 76/20 (2018.01)
CPC H04W 40/30 (2013.01) [H04L 5/0053 (2013.01); H04W 40/248 (2013.01); H04W 76/20 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A first terminal device, comprising:
at least one processor; and
at least one memory including computer program code;
the at least one memory and the computer program code configured to, with the at least one processor, cause the first terminal device to:
receive, from a second terminal device via a device-to-device connection, an indication of a decision to switch the device-to-device connection to a connection routed by at least one network device for communication with the second terminal device;
determine, based on the received indication from the second terminal device, proactive switching from the device-to-device connection to the routed connection to be performed; and
send a request to a first network device of the at least one network device to set up the routed connection, the request indicating a cause for the determined proactive switching,
wherein the first terminal device is further caused to:
determine whether a packet data unit session served by a core network is required for the communication via the routed connection; and
in response to determining that the packet data unit session is required, determine the packet data unit session,
wherein the determining and setup of the packet data unit session is performed after the indication is received and a connection setup is initiated for both the first terminal device and the second terminal device in parallel.