Method for sending downstream traffic from a switching center

A switching center and business technology, applied in the direction of data exchange network, data exchange through path configuration, communication between multiple stations, etc., can solve the problems of increasing capital and operating costs, and not necessarily determining the base station of the mobile terminal, etc., to achieve Reduced capital expenses, reduced operating expenses, high throughput effects

Inactive Publication Date: 2006-12-20
ALCATEL LUCENT SAS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In contrast to uplink frames (from mobile terminal to network) which are always sent to the nearest base station and then forwarded inside the network, downlink frames (from network to mobile terminal) suffer from the following problems: i.e. during handover or immediately after After handover, the base station through which the mobile terminal can be reached is not necessarily determined
The setup and management of tunnels increases the capital and operational costs associated with the control plane operations of the L2 network and also creates an overhead burden

Method used

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  • Method for sending downstream traffic from a switching center
  • Method for sending downstream traffic from a switching center
  • Method for sending downstream traffic from a switching center

Examples

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Embodiment Construction

[0039] The invention is explained exemplarily in relation to a radio network with mobile terminals served by one or more base stations.

[0040] figure 1 A schematic flow diagram of an embodiment of the method according to the invention is shown. In the present example, as a first step 101 it is checked whether the MAC address, ie the mobile terminal correspondingly identified by the MAC address, is already known. If not, the exchange continues in the conventional manner.

[0041] If the MAC address is already known, a change of the base station providing service to the mobile terminal is detected (step 103). A change of a base station is detected inside a switching center having a forwarding information database by comparing the uplink traffic coming from a mobile terminal via a specific base station (i.e. via a specific path) with entries in a forwarding information database linking the mobile terminal The MAC address is associated with a specific path corresponding to th...

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Abstract

For improving data flow during a handover it is proposed to send downstream traffic (6a,b,c,d) from a switching center (2) over at least two paths over base stations (3a, 3b) to a mobile terminal (4) by checking for a change of the base station (3a, 3b) serving the mobile terminal (4), upon detection of a base station change, adding the new base station (3b) associated to the mobile terminal (4) by way of a different path to a forwarding information database of the switching center (2), and forwarding as many downstream frames (6b, 6d) to the mobile terminal (4) as are according entries in the forwarding information database.

Description

[0001] Cross references to related applications [0002] The present invention is based on the priority application EP05291281.3, which is hereby incorporated by reference. technical field [0003] The invention relates to a method for sending downlink traffic from a switching center to a mobile node of an L2 network via at least two paths. The invention also relates to a switching center for carrying out the method. Background technique [0004] In the context of mobility, hand-over handling is an important issue. Depending on the actual location of the mobile terminal, the mobile terminal is served by different base stations in the radio network. In contrast to uplink frames (from mobile terminal to network) which are always sent to the nearest base station and then forwarded inside the network, downlink frames (from network to mobile terminal) suffer from the following problems: i.e. during handover or immediately after After handover, the base station through which th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04B7/26H04L12/46H04W36/02H04W36/08H04W36/18H04W36/38H04W76/04H04W88/14
CPCH04W36/02
Inventor 费德里科·德胡安·哈阿特
Owner ALCATEL LUCENT SAS
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