Emergency call placement method
First Claim
Patent Images
1. An emergency call placement method for user equipment in idle mode camped on a first cell of a wireless communication network having a first radio access technology comprising the steps of:
- requesting a radio resource control connection using an establishment request;
changing to a new cell in a different location area than the first cell without performing a location area update and without performing a routing area update, if the establishment request is “
emergency call”
, and requesting again a radio resource control connection using “
emergency call”
as an establishment request;
changing to a new cell in a different location area than the first cell and performing a location area update or a routing area update, if the establishment request is “
originating conversation call”
, and requesting again a radio resource control connection using “
registration”
as an establishment request.
4 Assignments
0 Petitions
Accused Products
Abstract
An emergency call placement method (300) used in user equipment in idle mode camped on a first cell of a wireless communication network having a first radio access technology includes the steps of requesting (316) a radio resource control connection using “emergency call” as an establishment request, changing (340, 350) to a new cell in a different location area or routing area than the first cell, and requesting again (316) a radio resource control connection using “emergency call” as an establishment request. This method avoids performing a location area update or a routing area update when the user equipment changes to a new cell during an emergency call and thus may speed up placement of the emergency call by several seconds.
24 Citations
14 Claims
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1. An emergency call placement method for user equipment in idle mode camped on a first cell of a wireless communication network having a first radio access technology comprising the steps of:
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requesting a radio resource control connection using an establishment request; changing to a new cell in a different location area than the first cell without performing a location area update and without performing a routing area update, if the establishment request is “
emergency call”
, and requesting again a radio resource control connection using “
emergency call”
as an establishment request;changing to a new cell in a different location area than the first cell and performing a location area update or a routing area update, if the establishment request is “
originating conversation call”
, and requesting again a radio resource control connection using “
registration”
as an establishment request. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for user equipment (UE) in idle mode camped on an old cell to place a call with a wireless communication network comprising the steps of:
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(a) requesting a radio resource control connection using an establishment cause; (b1) redirecting to a new cell in a different location area than the old cell and returning to step (a) without performing a location area update, if the establishment request is “
emergency call” and
if a radio resource control connection reject message has been received from the wireless communication network with redirection to a new frequency;(b2) redirecting to a new cell in a different location area than the old cell and performing a location area update, if the establishment request is “
originating conversation call” and
if a radio resource control connection reject message has been received from the wireless communication network with redirection to a new frequency;(c1) redirecting to a new cell in a different location area than the old cell and returning to step (a) without performing a location area update, if the establishment request is “
emergency call” and
if a radio resource control connection reject message has been received from the wireless communication network with redirection to a new radio access technology;(c2) redirecting to a new cell in a different location area than the old cell and performing a location area update, if the establishment request is “
originating conversation call” and
if a radio resource control connection reject message has been received from the wireless communication network with redirection to a new radio access technology;(d1) reselecting to a new call in a different location area than the old cell and returning to step (a) without performing a location area update, if the establishment request is “
emergency call” and
if a neighboring cell provides better service;(d2) reselecting to a new call in a different location area than the old cell and performing a location area update, if the establishment request is “
originating conversation call” and
if a neighboring cell provides better service;(e) completing a radio resource control connection setup, if a radio resource control connection setup message has been received from the wireless communication network; (f1) sending a connection management service request using “
emergency call establishment”
as a service type, if the establishment cause is “
emergency call”
; and(f1) sending a connection management service request using “
mobile originating call establishment”
as a service type, if the establishment cause is “
originating conversation call”
.
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14. A method for user equipment (UE) in idle mode camped on an old cell to place a call with a wireless communication network comprising the steps of:
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(a) requesting a radio resource control connection using an establishment cause; (b1) changing to a new cell in a different location area than the old cell and returning to step (a) without performing a location area update, if the establishment cause is “
emergency call”
;(b2) changing to a new cell in a different location area than the old cell and performing a location area update, if the establishment cause is “
originating conversation call”
;(c) completing a radio resource control connection setup, if a radio resource control connection setup message has been received from the wireless communication network; (d1) sending a connection management service request using “
emergency call establishment”
as a service type, if the establishment cause is “
emergency call”
; and(d2) sending a connection management service request using “
mobile originating call establishment”
as a service type, if the establishment cause is “
originating conversation call”
.
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Specification
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Current AssigneeGoogle Technology Holdings LLC (Alphabet Inc.)
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Original AssigneeMotorola, Inc. (Motorola Solutions, Inc.)
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InventorsM R, Srikrishna, Raghuram, Sharada, Dorsey, Donald A.
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Primary Examiner(s)Nguyen; Duc M.
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Assistant Examiner(s)Addy; Anthony S.
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Application NumberUS10/693,247Publication NumberTime in Patent Office1,579 DaysField of Search4554041-4042, 455/450, 455/422.1, 455/435.1, 455/436, 455442-448, 455/453, 4554561-457, 455/435.2, 455/435.3, 455/521US Class Current455/404.1CPC Class CodesH04W 4/90 Services for handling of em...H04W 76/10 Connection setupH04W 76/50 for emergency connections
