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Media independent handover (MIH)-based quick handover and L2 triggering time determining method

A fast switching, IEEE802.21MIH technology, applied in the field of vertical switching technology, can solve the problems of large switching delay and achieve the effect of improving switching performance and reducing vertical switching delay

Active Publication Date: 2012-01-18
启东创开智能科技有限公司
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Problems solved by technology

[0010] In order to overcome the problem of excessive handover delay in uplink vertical handover of heterogeneous wireless networks, the present invention proposes a fast handover mechanism based on IEEE 802.21MIH, and proposes a method for determining L2 triggering timing, so that the MN can switch before the link layer handover Complete the relevant L3 configuration work, thereby greatly reducing the total switching delay and achieving the purpose of optimizing system performance

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  • Media independent handover (MIH)-based quick handover and L2 triggering time determining method
  • Media independent handover (MIH)-based quick handover and L2 triggering time determining method
  • Media independent handover (MIH)-based quick handover and L2 triggering time determining method

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Embodiment Construction

[0020] The core idea of ​​the present invention is to propose a fast handover mechanism based on IEEE 802.21MIH, and provide a method for determining the L2 trigger timing, so that the related L3 configuration work is completed before the L2 handover, thereby reducing the uplink vertical handover in heterogeneous wireless networks. reduce the switching delay and optimize system performance.

[0021]Among them, the fast handover mechanism based on IEEE 802.21MIH refers to: with the assistance of IEEE 802.21 primitives, the MIHF module provides link layer intelligence for the upper layer and obtains relevant network information, and triggers the Link_Going_Down primitive before the L2 handover, so that the MN completes in advance L3 configuration work, including mobility detection, IP address configuration, and duplicate address detection. During the L2 handover process, the Link_Down primitive is used to indicate the start of the L2 handover, and the Link_Up primitive indicates...

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Abstract

The invention relates to a vertical handover technology in a heterogeneous wireless network in the field of communication, and discloses an IEEE802.21 media independent handover (MIH)-assisted quick handover mechanism in uplink vertical handover of a heterogeneous network and an L2 triggering time determining method. Based on signaling interaction of an IEEE802.21 MIH entity, a media independent handover function (MIHF) module provides link layer intelligence and neighbor network information for a high layer; an auxiliary mobile node determines a handover target network, and determines a quick mobile IPL2 triggering moment according to the smoothed received signal intensity; and configuration operation of related three layers is completed before L2 handover, so that handover time delay in vertical handover is effectively reduced and the performance of the system is improved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to the vertical handover technology in heterogeneous wireless networks. Background technique [0002] With the rapid development of information technology and computer technology and the increase of human demand for information and communication, users' requirements for mobility are getting higher and higher. Higher transmission rate, larger system capacity, and wider service coverage have become the future mobile communication. Mainstream trends and evolution goals of development. In order to meet the needs of different users, the Next Generation Wireless Network (NGWN) will support a variety of wireless access network technologies, such as cellular technology, wireless local area network (WLAN), and the like. [0003] The handover adopted in a traditional homogeneous network is a horizontal handover, which is a handover between base stations / access points using the s...

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Application Information

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IPC IPC(8): H04W36/14H04W36/30
Inventor 柴蓉程静静陈前斌蒲显森
Owner 启东创开智能科技有限公司
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