US 11,736,998 B2
Method for preventing an inter-rat change from being triggered and communications apparatus utilizing the same
Guan-Jie Huang, Hsinchu (TW); Tzu-Wen Chang, Hsinchu (TW); Kuan-Wei Chen, Hsinchu (TW); Yu-Hua Huang, Hsinchu (TW); Teng Ma, Shanghai (CN); and Sheng-Kai Chang, Hsinchu (TW)
Assigned to MEDIATEK INC., Hsinchu (TW)
Filed by MEDIATEK INC., Hsinchu (TW)
Filed on Sep. 3, 2021, as Appl. No. 17/466,044.
Application 17/466,044 is a continuation of application No. 16/513,884, filed on Jul. 17, 2019, granted, now 11,140,593.
Claims priority of provisional application 62/735,922, filed on Sep. 25, 2018.
Claims priority of application No. 201910347470.8 (CN), filed on Apr. 28, 2019.
Prior Publication US 2021/0400550 A1, Dec. 23, 2021
Int. Cl. H04W 36/00 (2009.01); H04W 8/08 (2009.01); H04W 76/19 (2018.01); H04W 76/27 (2018.01); H04W 68/00 (2009.01); H04W 36/14 (2009.01); H04W 36/24 (2009.01)
CPC H04W 36/00837 (2018.08) [H04W 8/08 (2013.01); H04W 36/0079 (2018.08); H04W 36/14 (2013.01); H04W 36/24 (2013.01); H04W 68/005 (2013.01); H04W 76/19 (2018.02); H04W 76/27 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A communications apparatus, comprising:
a radio transceiver, capable of transmitting or receiving wireless radio frequency signals to or from a cellular network; and
a processor, configured to:
receive an incoming call request message that will trigger a Circuit Switch Fall Back (CSFB) procedure or a Evolved Packet System Fall Back (EPS FB) procedure from the cellular network via the radio transceiver,
query a user to accept or reject the incoming call request before triggering the CSFB procedure or the EPS FB procedure, and
determine whether to trigger the CSFB procedure or the EPS FB procedure based on a response to the query from the user.