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A Hybrid Fast Handoff Method Adapted to Mobile Wimax Networks

A fast switching and hybrid technology, applied in the field of communication, can solve problems such as difficult to meet real-time business, delay and large packet loss, and achieve the effect of improving packet loss rate, reducing packet loss, and small signaling overhead

Inactive Publication Date: 2017-06-27
HUNAN UNIV
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Problems solved by technology

[0003] The existing handover technical scheme of mobile WiMAX network has a large delay and packet loss during the handover process, which is difficult to meet the needs of some real-time services

Method used

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  • A Hybrid Fast Handoff Method Adapted to Mobile Wimax Networks
  • A Hybrid Fast Handoff Method Adapted to Mobile Wimax Networks
  • A Hybrid Fast Handoff Method Adapted to Mobile Wimax Networks

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Embodiment Construction

[0017] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] HFH adopts a hierarchical network architecture, and the network topology is as follows: figure 1 shown. In the HFH network architecture, the core network (Internet backbone network) and the access subnet are connected through the gateway (Gateway, GW). That is, the movement between base stations in the access subnet (such as figure 1 The movement between the two base stations of base station 1 and base station 2, or the movement between the two base stations of base station 3 and base station 4); cross-regional movement is the movement across different access subnets (such as figure 1Move between base station 2 and base station 3 in the two base stations).

[0019] The switching execution process of HFH is divided into switching between subnets and switching within subnets.

[0020] figure 2 The HFH in...

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Abstract

The invention discloses a hybrid fast handover (HFH) method adapted to a mobile worldwide interoperability for microwave access (WiMAX) network. According to the HFH method, fast handover between the movement of mobile sites in sub-networks and the movement of the mobile sites among the sub-networks is realized. The HFH method has the advantages that on the basis of fast handover over hierarchical mobile internet protocol version 6 (F-HMIPv6) handover, by the combination of a cellular internet protocol (CIP) and a mobile stream control transmission protocol (mSCTP), signaling overhead and handover delay during register updating and tunnel establishment of a home agent can be effectively reduced. By the adoption of a new fast duplicated address detection (F-DAD) mechanism, the handover delay caused by DAD can be effectively reduced, and by the introduction of a service scheduling buffer mechanism, packet loss in a handover process can be effectively reduced. The HFH method can be applied to a third-generation (3G) mobile WiMAX network and a fourth-generation (4G) long term evolution (LTE) network.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a hybrid fast switching method suitable for mobile WiMAX (3G) and LTE (4G) networks. [0002] technical background [0003] The existing handover technical scheme of the mobile WiMAX network has a large delay and packet loss during the handover process, and it is difficult to meet the needs of some real-time services. The new hybrid fast handover method—HFH (Hybrid Fast Handover, HFH) is based on the traditional F-HMIPv6 handover algorithm, combined with CIP and mSCTP protocols to optimize the link and regional handover management of the original algorithm, maintaining end-to-end The continuity of communication greatly reduces the switching delay and realizes the fast switching of the network. HFH also adopts a new DAD mechanism (N-DAD) to reduce the time delay produced by existing duplicate address detection methods. In addition, HFH adds a service scheduling buffer mechani...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/08H04W36/18
Inventor 陆绍飞周泽辉
Owner HUNAN UNIV
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