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Method of performing an intra-segment handover

A technology of internal switching and switching, which is applied in the field of switching to improve network performance and scalability, reduce a large number of control services, and avoid delays

Inactive Publication Date: 2012-03-07
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, intra-segment handover in Mobile Ethernet results in a large amount of traffic in the network segment

Method used

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  • Method of performing an intra-segment handover
  • Method of performing an intra-segment handover
  • Method of performing an intra-segment handover

Examples

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Embodiment Construction

[0035] figure 1 is a Mobile Ethernet compatible telecommunication network TN comprising a plurality of tree-structured network segments S1-S4 defined in layer 2 according to the OSI model (OSI=Open Systems Interconnection). Each of the segments S1-S4 is interconnected by a Rapid Ring Core Network RCN such as RPR (=Resilient Packet Ring). The segments S1-S4 are connected to the ring core network RCN via a segment gateway switch GW, wherein the segment gateway switch GW represents the root node of each of the segments S1-S4. Each segment S1-S4 is configured as a tree-structured access network. The access point AP provides the mobile terminal with a communication connection to the Ethernet-compatible telecommunication network TN. Access points AP provide access according to WLAN, WiMAX, DSL, Fiber Ethernet, 3G (= third generation), for example. The segment gateway switch GW is connected to all other segment gateway switches GW of the telecommunications network TN via the ring ...

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Abstract

The invention concerns a method of performing an intra-segment handover (HO) of a mobile station (MS) from a source access point (AP1) of a tree- structured segment (S1) of an Ethernet-compliant telecommunication network to a target access point (AP2) of said segment (S1), as well as a switch (SW-123) to support the execution of this method. After establishing contact between the mobile station (MS) and the target access point (AP2), the mobile station (MS) sends an update entry request addressed to the segment gateway switch (GW). The update entry request is received by a switch (SW-123) positioned in the tree structure of the segment (S1) hierarchically above the source and target access points (AP1, AP2) and below the segment gateway switch (GW). The switch (SW-123) checks whether its forwarding database contains a first entry comprising an address of the mobile station (MS) received by means of the update entry request. If the forwarding database of the switch (SW-123) contains the first entry, the switch (SW-123) squelches said update entry request and assumes the function of an anchor switch regarding the handover (HO), whereby the anchor switch is a switch of the segment (S1) which is positioned in the tree structure of the segment (S1) hierarchically above the source and target access points (AP1, AP2) and below the segment gateway switch (GW) and which is common to the ongoing session before and after the handover (HO).

Description

technical field [0001] The invention relates to a method of performing an intra-segment handover of a mobile station from a source access point of a tree-structured segment of an ethernet compliant telecommunication network to a target access point of said segment, and in A switch in a segment used in the method. Background technique [0002] An important aspect in mobile networks is the handover of a mobile terminal between two access points. The handover process generates a large amount of control data that needs to be sent over the network to update other network resources. [0003] M.Kuroda, M.Inoue, A.Okubo, T.Sakakura, K.Shimizu and F.Adachi in "Scalable Mobile Ethernet and Fast Vertical Switching" (IEEE Wireless Communications and Networking Conference (WCNC) 2004, 2004 3 Mobility management in Ethernet-based network architectures is described in . The flat Ethernet-based network architecture entering the mobile domain is subsumed under the term "Mobile Ethernet". ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/36
CPCH04W36/08H04W40/36
Inventor R·施伦克C·赫尔姆斯梅尔A·德科斯
Owner ALCATEL LUCENT SAS
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