Communication device with predicted service failure triggered registration fallback for reduced communication service setup

Patent metadata

Field	Value
Publication number	US-12167282-B2
Application number	US-202217586274-A
Country	US
Kind code	B2
Filing date	Jan 27, 2022
Priority date	Jan 27, 2022
Publication date	Dec 10, 2024
Grant date	Dec 10, 2024

Abstract

A communication device, method and computer program product reduce time to connect a communication session. The communication device registers for cellular communication service using a first radio access technology (RAT) or sub-RAT with a first node. The communication device determines whether a connection for a selected communication service is predicted to be available from the first node. The communication device determines whether a request for the selected communication service is predicted to occur. In response to determining that the connection for the selected communication service is unavailable from the first node and the request for the selected communication service is predicted to occur, the communication device identifies a second node that supports communication using a second RAT/sub-RAT. The communication devices triggers registration fallback from the first node to the second node. In response to receiving the request, the communication device connects to the second node for the selected communication service.

First claim

What is claimed is:

1. A communication device comprising:
a communication subsystem communicatively connectable to two or more base nodes using either of a first radio access technology (RAT) and a second RAT;
a memory that stores a communication application; and
a controller communicatively coupled to the communication subsystem and the memory and which:
registers the communication device for cellular communication service using the first RAT with a first node of the two or more base nodes;
determines whether a connection for a selected communication service is predicted to be available from the first node, wherein, the controller:
accesses, from memory, stored historical data related to attempts to make a connection with the first node for the selected communication service;
compares, to a threshold ratio, a historical ratio of a first number of unsuccessful attempts to a second number of total attempts within a recent period of time; and
determines that the connection for the selected communication service is predicted to not be available from the first node in response to the historical ratio exceeding the threshold ratio;

determines whether a mobile originated request for the selected communication service is predicted to occur; and
in response to determining that (i) the connection for the selected communication service is predicted to not be available from the first node and (ii) the mobile originated request for the selected communication service is predicted to occur:
identifies a second node of the two or more base nodes that supports communication using the second RAT;
triggers registration fallback from the first node to the second node; and
in response to receiving a subsequent request from the communication application to connect the selected communication service, connects the selected communication service via the second node.

2. The communication device of claim 1 , wherein, to determine whether the connection for the selected communication service is predicted to be available from the first node, the controller:
identifies that the selected communication service comprises one or more of: (i) a voice call; (ii) a video service; (iii) a virtual reality (VR) service; (iv) extended reality (XR) service; (v) augmented reality (AR) service; (vi) an internet protocol multimedia subsystem (IMS) service; and (vii) a strict quality of service (QOS) cellular service; and
receives identification information broadcast by the first node that indicates that cellular communication services currently supported by the first node does not include the selected communication service.

3. The communication device of claim 1 , wherein the controller:
determines whether the mobile originated request for the selected communication service is predicted to occur by determining that a request confidence level of a first prediction is greater than a request threshold confidence level; and
triggers registration fallback from the first node to the second node in response to determining that (i) the connection for the selected communication service is predicted to not be available from the first node and (ii) the mobile originated request for the selected communication service is predicted to occur, with the request confidence level being greater than the request threshold confidence level.

4. The communication device of claim 1 , wherein, in determining whether the connection for the selected communication service is predicted to be available from the first node, the controller:
identifies at least one of (i) received signal strength of a signal from the first node; (ii) received signal quality of the signal from the first node; and (iii) distance between the communication device and the first node;
identifies a current coverage area of two or more coverage areas of the first node in relation to the at least one of the received signal strength, the received signal quality, and the distance, the two or more coverage areas including a marginal coverage area and a nominal coverage area that has a higher probability of a successful connection for cellular communication service than the marginal coverage area; and
filters the historical data stored in memory for attempts to make the selected communication service connection from locations in the current coverage area.

5. The communication device of claim 1 , wherein the controller:
in response to identifying that one of a service failure and a network-initiated registration fallback has occurred, generates a new entry indicating an unsuccessful attempt for connection with the first node for the selected communication service;
in response to identifying that the attempt to make a connection with the first node for the selected communication service is successful and that a subsequent communication service with a second communication device concludes normally, generates the new entry indicating a successful attempt for a connection with the first node for the selected communication service; and
stores the new entry in the historical data with associated contextual data comprising at least one of: (i) received signal strength of a signal from the first node; (ii) received signal quality of the signal from the first node; (iii) distance between the communication device and the first node; and (iv) geospatial location of the communication device.

6. The communication device of claim 1 , wherein, in determining whether the mobile originated request for the selected communication service is predicted to occur, the controller:
identifies user inputs in a sequence of two or more user inputs to the communication application, the sequence required to trigger the mobile-originated request for the selected communication service;
determines a request confidence level of a prediction that the mobile originated request for the selected communication service will occur based on a number of completed user inputs in the sequence of two or more user inputs to the communication application; and
determines that the mobile originated request for the selected communication service is predicted to occur when the request confidence level is greater than a request threshold confidence level.

7. The communication device of claim 6 , wherein the controller:
identifies first instances in which the number of completed user inputs of the sequence of the two or more user inputs required to request the selected communication service was discontinued and second instances in which the sequence is were completed; and
weights the request confidence level for the number of completed user inputs of the sequence in relation to a ratio of the number of first instances in which the sequence is discontinued to the number of second instances in which the sequence is completed.

8. The communication device of claim 6 , wherein, in determining whether the mobile originated request for the selected communication service is predicted to occur above a request threshold confidence level, the controller:
identifies a user input mode from among more than one user input mode supported by the communication application, the user input mode comprising at least one of: (i) a touch keypad entry; (ii) a touch user contact entry; (iii) a voice numeric entry; (iv) a voice user contact entry; (v) a defined user gesture recognized in an image stream produced by an image capturing device; and (vi) a user movement gesture of the communication device detected by a movement sensor, each user input mode having a respective request confidence level; and
determines the respective request confidence level that is related to the user input mode.

9. The communication device of claim 1 , further comprising an output device communicatively coup

Assignees

• Motorola Mobility Llc

Inventors

• Chisu Daniel C

Classifications

• H04W36/0022 Primary

  for transferring data sessions between adjacent core network technologies · CPC title

• H04W36/00222 Primary

  between different packet switched [PS] network technologies, e.g. transferring data sessions between LTE and WLAN or LTE and 5G · CPC title