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A dns query method and network element

A DNS query, DNS server technology, applied in electrical components, network data management, wireless communication, etc.

Active Publication Date: 2019-01-08
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a DNS query method and a network element, which are used to solve the problem in the prior art that multi-mode terminals whose home is not in China cannot perform data services through the terminal under the condition that no EPC network is deployed in the home question

Method used

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  • A dns query method and network element
  • A dns query method and network element
  • A dns query method and network element

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Experimental program
Comparison scheme
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Embodiment 1

[0040] In Embodiment 1 of the present invention, a DNS query method is provided, such as image 3 As shown, it specifically includes the following steps:

[0041] S301. Send a first DNS query instruction used for DNS query in the EPC network to the DNS server at the home of the multi-mode terminal connected to the domestic EPC network.

[0042] Further, in this step, the first DNS query command may be a name authority pointer (Naptr, NamingAuthority Pointer) record query command. In the EPC network, the query command sent by the MME to the DNS server is usually a Naptr record query command, because more information can be fed back through the DNS query through the Naptr record query command. When the home DNS server queries the network element address corresponding to the APN, one APN can correspond to multiple address information, and the Naptr record query can determine the address information that best meets the filter conditions according to the preset filter conditions, ...

Embodiment 2

[0050] In Embodiment 2 of the present invention, a DNS query method is provided, such as Figure 4 As shown, it specifically includes the following steps:

[0051] S401. Determine whether the multi-mode terminal accessing the domestic EPC network is an international roaming terminal, if yes, go to step S402, if not, go to step S404.

[0052] In this step, according to the attribution information of the multi-mode terminal carried in the attach request message sent by the multi-mode terminal when accessing the domestic EPC network, that is, the value of the Public Land Mobile Network (PLMN, Public Land Mobile Network), It is judged whether the multimode terminal is an international roaming terminal.

[0053] S402. When it is determined that the multi-mode terminal accessing the domestic EPC network is a foreign multi-mode terminal roaming to the domestic country, send the first DNS query instruction used for DNS query in the EPC network to the DNS server where the multi-mode t...

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Abstract

The embodiment of the present invention provides a DNS query method and a network element, which sends the first DNS query command applied to the DNS query in the EPC network to the DNS server at the home of the multi-mode terminal connected to the EPC network of the country; when the query cannot be obtained When the result is obtained, a second DNS query command applied to DNS query in the 2G / 3G core network is sent to the DNS server, and the query result is obtained through the second DNS query command. It solves the problem in the prior art that multi-mode terminals whose origin is not in China cannot access data services through the terminal under the condition that no EPC network is deployed in the origin. The invention relates to the technical field of mobile communication.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a DNS query method and a network element. Background technique [0002] The Mobility Management Entity (MME, Mobility Management Entity) is a signaling entity in the Evolved Packet Core Network (EPC, Evolved Packet Core) network. Its main functions include: supporting non-access stratum signaling (NAS, Non Access Stratum) Signaling and its security, tracking area (Tracking Area) list management, serving gateway node (S-GW, Serving Gateway) and packet data network gateway node (P-GW, PDN Gateway) selection, MME during cross-MME handover Selection, selection of Serving General Packet Radio Service Support Node (SGSN, Serving General Packet Radio Service Support Node) during handover to the second generation mobile communication system 2G / third generation mobile communication system 3G access system, user authentication, roaming control As well as bearer management, mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W8/26H04L29/12H04W88/06
CPCH04W8/26H04W88/06H04L61/4511
Inventor 苑红刘超
Owner CHINA MOBILE COMM GRP CO LTD