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Local routing method for establishing data route in segmented mode in WiMAX (wireless metropolitan area network) system

A segmented establishment and data path technology, applied in electrical components, wireless communication, etc., can solve problems such as waste of system resources, and achieve the effect of expanding capacity

Inactive Publication Date: 2012-12-12
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] The above describes the conventional routing process of the WiMAX system, with figure 1 It can be clearly seen that there are problems in the conventional routing process of data packets in the WiMAX system. For example, when the data paths of both communicating parties pass through the same serving access gateway or anchor access gateway, when they communicate, the data is transmitted from this ASN- After the GW goes out, it goes back to the ASN-GW through the CSN, forming an overlap on the transmission path, resulting in a waste of system resources.

Method used

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  • Local routing method for establishing data route in segmented mode in WiMAX (wireless metropolitan area network) system
  • Local routing method for establishing data route in segmented mode in WiMAX (wireless metropolitan area network) system
  • Local routing method for establishing data route in segmented mode in WiMAX (wireless metropolitan area network) system

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Embodiment Construction

[0088] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0089] like Figure 5 As shown, the present invention provides a local routing method for segmentally establishing a data path in a WiMAX system. First, according to the difference of local routing execution points, local routing can be divided into three types: local routing of anchor access gateway, service Access gateway local routing and BS local routing.

[0090] For any type of local routing, it is mainly completed by the following three steps:

[0091] ① Establish a new data path;

[0092] ② Determine local routing, if local routing is possible, go to ③; if local routing is not possible, go to ①;

[0093] ③Start local routing.

[0094] All data paths (including the air link identified by CID and the wired data path identified by DPID) have three states:

[0095] State 0 - not sure if local routing is possible;

[0096] State 1 ...

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Abstract

The invention discloses a local routing method for establishing a data route in a segmented mode in a WiMAX (wireless metropolitan area network) system, comprising the following steps that: a user transmits data to a BS (base station), the BS judges whether the local routing is started, if so, the BS local routing is performed, if not, the service data is transmitted to a service access gateway; the service access gateway judges whether the local routing is started, if so, the service access gateway local routing is performed, if not, the service data is transmitted to an anchor access gateway; the anchor access gateway judges whether the local routing is started, if so, the anchor access gateway local routing is performed, if not, the common routing is performed. The local routing method can be used for realizing the local exchanging of the local user data, establishing the most fast and effective data routing and expanding the system capacity.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, in particular to a local routing method applied in a WiMAX mobile communication system. Background technique [0002] like figure 1 As shown, it is the general topology of WiMAX network. WiMAX network is divided into two parts: access service network (ASN) and core service network (CSN). Among them, ASN usually includes base station (BS) and access gateway (ASN-GW) Two parts, BS is mainly responsible for the mobile terminal (MS) to connect to the network wirelessly through the air interface, wireless resource scheduling and other functions; ASN-GW is the uplink exit of the ASN network, which is responsible for terminal access authentication and access routing , Mobile IP external agent and other functions; CSN mainly includes authentication server, core router, mobile IP (MIP) home agent and other functions. [0003] When a mobile terminal communicates, service data may be forwarde...

Claims

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Application Information

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IPC IPC(8): H04W40/02
Inventor 潘甦岳向睿王岩
Owner NANJING UNIV OF POSTS & TELECOMM
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