Systems and methods for facilitating efficient vertical handoffs in a wireless communication system

• US 9,967,796 B2
• Filed: 04/04/2017
• Issued: 05/08/2018
• Est. Priority Date: 04/07/2011
• Status: Active Grant

• Current Assignee: Novatel Wireless, Inc. (Inseego Corp.)
• Original Assignee: Novatel Wireless, Inc. (Inseego Corp.)
• Inventors: Souissi, Slim, Wu, John, Kim, Brad
• Primary Examiner(s): Ly, Nghi H
• Application Number:
  US15/479,188
• Publication Number:
  US 20180092015A1
• Time in Patent Office: 399 Days
• Field of Search: 455440, 455419, 455434, 455441, 455436, 455442, 4554221, 4554351, 4554321, 370331
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 36/18 for allowing seamless reselection, e.g. soft reselection
• CPC Class Codes: H04W 36/322 by location data
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Systems and methods are provided for performing efficient vertical handoffs in a wireless user device are provided. The user device can comprise a mobile phone, computer table, handheld computer, or other computer system capable of connecting to more than one mobile wireless network that use different wireless communication protocols. Various efficient scanning methods are disclosed that are efficient in terms of battery usage, thermal performance, processing power, throughput performance, or a combination thereof.

Claims

1. A method for managing network connectivity of a wireless device from a remote server, the wireless device being connected to a first wireless network and configured to scan for a signal of a second wireless network, the first wireless network and the second wireless network being configured to operate using different wireless communication protocols, the wireless device being configured to perform the method comprising:

receiving a network search command from a remote server instructing the wireless device to scan for a signal of the second wireless network and to initiate a vertical handoff from the first network to the second network if the signal from the second wireless network is detected;

scanning for a signal of a second wireless network if the wireless device is located in a coverage area of the second wireless network;

executing a vertical handoff from the second wireless network to the first wireless network if the signal of the first wireless network is detected;

operating the wireless device in a scanning mode if the signal of the first wireless network is not detected.

2. The method of claim 1, further comprising:

receiving a location information request from the remote server requesting that the wireless device provide location information; and

sending a location information response to the remote server from the wireless device that includes location information for the wireless device.

3. The method of claim 2 wherein the location information response includes a serving cell identifier associated with a base station providing wireless service to the wireless device.

4. The method of claim 2 wherein the location information response includes geographical coordinates associated with the location of the user device.

5. The method of claim 2 wherein the location information response includes at least one of rate of motion and direction of motion of the user device.