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Performing handover between short-range and cellular wireless networks

A cellular network, short-range technology, used in wireless communications, access restrictions, electrical components, etc., to solve problems such as call quality deterioration, frequent UE hopping, and weak signal strength.

Active Publication Date: 2017-09-26
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the signal strength of the WiFi connection becomes weak, this can cause the UE to frequently hop between LTE and WiFi connections, resulting in poor call quality

Method used

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  • Performing handover between short-range and cellular wireless networks
  • Performing handover between short-range and cellular wireless networks
  • Performing handover between short-range and cellular wireless networks

Examples

Experimental program
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Embodiment Construction

[0022] This disclosure describes implementations in which various techniques may be used to improve communications transitioning between short-range wireless networks and long-range wireless networks. The disclosure first discusses an exemplary communication system, including for Figure 1-Figure 6 of various details. Then for Figure 7-Figure 9 Let's discuss an example of switching. against Figure 10 - Figure 1 2 Describe various techniques for improving communications undergoing handovers. In particular, combined with Figure 11A-Figure 11D Embodiments are described wherein a link associated with a radio access technology (eg, cellular or WiFi) may be selected and associated switched for cellular and / or WiFi link preference. Subsequent combination Figure 12A and Figure 12B Techniques to reduce switching are described.

[0023] acronym

[0024] The following acronyms are used in this disclosure.

[0025] BS: base station

[0026] AP: access point

[0027] APN: ...

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PUM

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Abstract

Techniques are disclosed relating to a mobile device that initiates handovers from short-range networks to long-range networks. In various embodiments, a mobile device includes one or more radios that communicate using a plurality of radio access technologies (RATs) including a cellular RAT and a short-range RAT. In such an embodiment, the mobile device stores an indication that the cellular RAT is a preferred RAT for a communication session. The mobile may establish the communication session using the preferred RAT, and in response to determining that a quality of the preferred RAT fails to satisfy a set of quality criteria, may request that the communication session use the short-range RAT. In some embodiments, the mobile device analyzes average packet error rate for the communication session and in response to the average packet error rate satisfying a threshold, requests that the communication session use the cellular RAT.

Description

technical field [0001] The present application relates to wireless communications, and in particular to techniques for switching between different radio access technologies. Background technique [0002] The use of wireless communication systems is growing rapidly. In addition, wireless communication technology has evolved from only voice communication to also include the transmission of data such as the Internet and multimedia content. [0003] Expanding traffic on mobile networks has increased the need for mobile data offload where mobile devices can access services ultimately provided by operators of cellular networks through alternative wireless networks such as WiFi, wireless local area networks (WLANs). One form of mobile data offloading uses I-WLAN (Interworking Wireless LAN) or SMOG (S2b Mobility over GTP) architectures to deliver operator-provided services to mobile devices over WiFi. Services offered by these operators may include VVM (Visual Voice Mail), MMS (Mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/30H04W48/02H04W88/06
CPCH04W36/0022H04W36/30H04W48/02H04W88/06
Inventor A·K·塞恩赵文
Owner APPLE INC