US 11,838,804 B2
Enhanced method for preparing conditional handover to avoid preemption
Jean-Michel Pugeat, Paris (FR); Jürgen Mayer, Blaustein (DE); Michael Schopp, Ulm (DE); Ingo Viering, Munich (DE); Ahmad Awada, Munich (DE); and Jedrzej Stanczak, Wroclaw (PL)
Assigned to NOKIA TECHNOLOGIES OY, Espoo (FI)
Appl. No. 17/280,254
Filed by Nokia Technologies Oy, Espoo (FI)
PCT Filed Jul. 26, 2019, PCT No. PCT/FI2019/050560
§ 371(c)(1), (2) Date Mar. 26, 2021,
PCT Pub. No. WO2020/070373, PCT Pub. Date Apr. 9, 2020.
Claims priority of provisional application 62/742,001, filed on Oct. 5, 2018.
Prior Publication US 2022/0053384 A1, Feb. 17, 2022
Int. Cl. H04W 36/00 (2009.01); H04W 28/26 (2009.01)
CPC H04W 36/0016 (2013.01) [H04W 28/26 (2013.01); H04W 36/0058 (2018.08); H04W 36/00837 (2018.08)] 10 Claims
OG exemplary drawing
 
1. An apparatus comprising at least one processor and at least one memory including a computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the apparatus at least to:
transmit, by a source network entity, at least one handover prepare request comprising at least one extension indication to a target network entity;
receive, by the source network entity, in response to the at least one handover prepare request, at least one handover request response from the target network entity; and
transmit, by the source network entity, at least one handover command to at least one user equipment based upon the at least one handover request response, wherein the at least one extension indication comprises one or more of:
at least one value indicating strict resource reservation associated with the legacy handover; and
at least one value indicating flexible resource reservation.