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Network selection method and device

A network selection and network technology, applied in the field of communication, can solve the problems of increasing handover failure rate, small WLANAP coverage, and short WLANAP stay time, so as to improve user experience, reduce network handover failure rate, and improve overall system performance Effect

Active Publication Date: 2014-10-01
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] When performing network selection from a 3GPP network (such as UMTS / LTE) to a non-3GPP network (such as WLAN), for a high-speed UE, due to its high speed and small WLAN AP coverage, even if the UE successfully switches to WLAN AP, stay in the WLAN AP for a short time, the gain to improve the throughput is not obvious, and it will increase the handover failure rate, reduce the user experience and the overall performance of the system

Method used

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Embodiment 1

[0041] Aiming at the problems existing in the prior art, Embodiment 1 of the present invention proposes a network selection method, which is applied in a scenario where network selection from a 3GPP network to a non-3GPP network is required. The 3GPP network may specifically be UMTS or LTE. Specifically, the 3GPP network may be a WLAN.

[0042] Such as image 3 As shown, the network selection method may include the following steps:

[0043]In step 301, the UE determines that it is necessary to perform network selection from a 3GPP network to a non-3GPP network.

[0044] In step 302, the UE determines the moving speed of the UE.

[0045] In the embodiment of the present invention, the UE determines the moving speed of the UE, including but not limited to the following methods:

[0046] Method 1. The UE uses MSE (Mobility State Estimation, mobility state evaluation) method to determine the moving speed of the UE. The moving speed can be high speed, medium speed and low speed....

Embodiment 2

[0068] In this embodiment, the UE stops scanning the non-3GPP network as an example for illustration.

[0069] The UE is currently working under the base station equipment, and selects the network according to the strategy provided by ANDSF. At this time, the strategy saved by the UE is that WLAN has a higher priority than UMTS / LTE, that is, if WLAN is found, the UE should switch from UMTS / LTE to WLAN; based on Therefore, the UE starts the WLAN scanning function.

[0070] Further, the UE uses the MSE method to determine its own moving speed, and if the determination result is high speed, the UE needs to stop the WLAN scanning function. When the UE moves towards the access point 1 at a high speed, since the WLAN scanning function is stopped, the access point 1 will not be found, thereby avoiding accessing the WLAN network.

[0071] Later, when the speed of the UE is determined to be medium or low, the UE needs to restart the WLAN scanning function; at this time, if the UE scan...

Embodiment 3

[0074] In this embodiment, the UE stops the selection / handover process of the non-3GPP network as an example for description.

[0075] The UE is currently working under the base station equipment, and performs network selection according to the auxiliary information of the access network. At this time, the UE saves the WLAN auxiliary information provided by the base station equipment. For example, the WLAN auxiliary information can be the identifier of the WLAN AP under the current base station equipment ( BSSID): Access Point 1 and Access Point 2.

[0076] Furthermore, the UE uses the MSE method to determine its own moving speed. If the determination result is high speed, the UE stops the WLAN selection / switching process, and does not continue to accept the access network assistance information provided by the base station equipment, and can further delete The previously saved information of AP1 and AP2. When the UE moves towards the access point 1 at high speed, network sel...

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Abstract

The invention discloses a network selection method and device. The network selection method comprises the steps that UE determines network selection from a 3GPP network to a non-3GPP network; the UE determines the movement speed of the UE; when the movement speed of the UE is larger than a preset speed threshold value, the UE stops network selection from the 3GPP network to the non-3GPP network. By adopting network selection method and device, when the movement speed of the UE is larger than the preset speed threshold value, a high-speed UE is prevented from being accessed to the non-3GPP network with a small coverage range by stopping network selection from the 3GPP network to the non-3GPP network, then the network switching failure rate is reduced, and the purposes of improving the user experience and system overall performance can be achieved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a network selection method and equipment. Background technique [0002] EPS (Evolved Packet System, Evolved Packet System) is a system that supports multiple access technologies and mobility between multiple accesses. In multiple access scenarios, UE (User Equipment, user equipment) may be in multiple 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) under the common coverage of access networks and / or non-3GPP access networks, these access networks may use different access technologies, may belong to different operators, and may also provide Access to different core networks. [0003] Such as figure 1 As shown, it is a schematic diagram of a coexistence scenario of UMTS (Universal Mobile Telecommunications System, Universal Mobile Telecommunications System) / LTE (Long Term Evolution, Long Term Evolution) and WLAN (Wireless Local Area Ne...

Claims

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Application Information

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IPC IPC(8): H04W36/14
Inventor 梁靖
Owner DATANG MOBILE COMM EQUIP CO LTD
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