Transmission optimization method, and mapping information storage method, device and system

A technology for mapping information and storage systems, applied in transmission systems, digital transmission systems, electrical components, etc., can solve the problems of occupying bandwidth resources and increasing the burden on ALTO servers, and achieve the effect of reducing load and traffic consumption

Active Publication Date: 2012-07-04
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As shown in Figure 1-b, for each service request, the ALTO client sends a query request to the ALTO server to obtain the latest network mapping table and path cost table, assuming that under the ALTO architecture, the mapping information has not changed for a long perio

Method used

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  • Transmission optimization method, and mapping information storage method, device and system
  • Transmission optimization method, and mapping information storage method, device and system
  • Transmission optimization method, and mapping information storage method, device and system

Examples

Experimental program
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Example

[0157] 512. Based on the relationship between PID and expiration time parameters, the ALTO client verifies the expiration of the Network Map. If the mapping information related to PID1 and PID2 in the Network Map expires, it sends an HTTP POST to the ALTO server. The HTTP POST carries PID1 and PID2 to request the ALTO server to return the Filtered Network Map (that is, the mapping information related to PID1 and PID2, and the mapping information related to PID1 and PID2 contains the corresponding expiration time parameters), see example 3 in section 2.2 below;

[0158] Specifically, the query request of the Filtered Network Map may also be an HTTP GET message.

[0159] 513. The ALTO client receives the 200 OK returned by the ALTO server, and the 200 OK carries a Filtered Network Map, where the Filtered Network Map has an expiration time parameter;

[0160] 514. The ALTO client updates the stored Network Map of the entire network layer level, and establishes or manages the relationshi...

Example

[0174] Example 1 is as follows:

[0175]

[0176]

Example

[0177] Example 2 is as follows:

[0178]

[0179]

[0180]

[0181] 2.2. In the following example, the ALTO client queries the Filtered Network Map by HTTP POST and the ALTO server returns the Filtered Network Map with the expiration time parameter. The ALTO client establishes the association between sub-network level mapping information and expiration time parameters. Once it expires, the ALTO client initiates a new query that is only used to query the mapping information of the sub-network level to avoid additional burden on the network.

[0182] Example 3:

[0183]

[0184]

[0185] 2.3 The following example shows the scenario where the ALTO client queries the Cost Map via HTTP GET and the ALTO server returns the Cost Map.

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PUM

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Abstract

The embodiment of the invention discloses a transmission optimization method, a mapping information storage method, an application layer traffic optimization (ALTO) client, an ALTO server and an ALTO system. The transmission optimization method comprises the following steps of: when a next-hop node is required to be determined for service, checking whether a storage system associated with the ALTO client stores mapping information or not; and if the storage system associated with the ALTO client stores the mapping information of a first sub-network level and the mapping information of the first sub-network level is unexpired and valid, determining a next-hop node set on the basis of an information source comprising the network address of a service request node and the mapping information of the first sub-network level, wherein the next-hop node set comprises one or more service provision nodes, and the service request node belongs to a first sub-network. Therefore, the consumption of redundant query request and response message interaction between the ALTO client and the ALTO server in the traffic of the whole backbone network is reduced, and the load of the backbone network is reduced.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a transmission optimization method, a storage method, device and system for mapping information. Background technique [0002] Distributed applications such as file sharing, streaming media broadcast or on-demand, voice communication and online game support platforms generally use a considerable amount of network resources on the network. Usually, these applications transmit a large amount of data by establishing connections between nodes distributed throughout the network. Most applications randomly select a subset from a large set of nodes to exchange data, and the underlying network topology is known. very little. As shown in Figure 1-a, many current P2P (Peer to Peer, peer-to-peer network) systems directly form an overlay network by peer-to-peer connections, and the overlay network is composed of nodes distributed in multiple service provider network ISPs , when two node p...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L12/56H04L12/801
Inventor 李明华
Owner HUAWEI TECH CO LTD
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