(19)
(11)EP 4 236 503 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
06.09.2023 Bulletin 2023/36

(43)Date of publication A2:
30.08.2023 Bulletin 2023/35

(21)Application number: 23173482.3

(22)Date of filing:  21.05.2019
(51)International Patent Classification (IPC): 
H04W 60/00(2009.01)
H04W 4/90(2018.01)
H04L 67/303(2022.01)
H04W 8/24(2009.01)
(52)Cooperative Patent Classification (CPC):
H04L 67/303; H04W 4/90; H04W 60/00; H04W 8/24; H04M 1/72418
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 21.05.2018 US 201862674464 P

(62)Application number of the earlier application in accordance with Art. 76 EPC:
19726633.1 / 3782355

(71)Applicant: BlackBerry Limited
Waterloo, Ontario N2K 0A7 (CA)

(72)Inventors:
  • BUCKLEY, Adrian
    Waterloo, N2K 0A7 (CA)
  • BAKKER, Jan Hendrik Lucas
    Waterloo, N2K 0A7 (CA)

(74)Representative: Murgitroyd & Company 
Murgitroyd House 165-169 Scotland Street
Glasgow G5 8PL
Glasgow G5 8PL (GB)

  


(54)SUPPORT OF EMERGENCY NUMBER DESCRIPTIONS


(57) A method is disclosed comprising: receiving, by a network node from a user equipment (UE), a registration message. The registration message comprising: a first indicator configured to indicate a status of emergency information previously received at the UE, the first indicator including a result of a hashing function of the previously received emergency information. The method comprises determining, by the network node, whether a second emergency information needs to be included in a registration accept message; and in response to determining that the second emergency information needs to be included in a registration accept message, transmitting, from the network node to the UE, a registration accept message including the second emergency information.





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