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Method and equipment for data resource transmission

A technology of data resources and equipment, applied in the field of network communication, can solve the problems of inability to evaluate the precise number of sub-packages, not calculating the accurate capacity of data resources, and low transmission efficiency.

Active Publication Date: 2012-09-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional solution based on CoAP data transmission does not calculate the exact capacity of data resources, and cannot evaluate the exact number of subcontracts, so data resources cannot be obtained concurrently, resulting in low transmission efficiency

Method used

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  • Method and equipment for data resource transmission
  • Method and equipment for data resource transmission
  • Method and equipment for data resource transmission

Examples

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example

[0100] The gateway sends a resource discovery request to the sensor:

[0101] REQ: GET / .well-known / core---Send a request to the default URI, which is the root directory to get the resource list

[0102] Sensor sends resource response to gateway:

[0103] RES: 200OK -- The response identifier was obtained successfully, and it carried 2 sets of resource indication information

[0104]

[0105]

[0106] The response message is encapsulated in the message body of the CoAP message, and the receiver (that is, the gateway) parses it according to the provisions in the Link-format standard.

[0107] (2) Add status code

[0108] When receiving a data resource acquisition request from the gateway, if the resource is too large to be transmitted in one packet, the sensor notifies the gateway with a status code to indicate that the resource is too large and needs to be requested with a Block Option.

[0109] For example, status code 413 may be specified to ind...

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Abstract

The embodiment of the invention provides a method and equipment for data resource transmission in a machine to machine system. The method for transmitting data resources of a node based on a constrained application protocol in the machine to machine system by blocks comprises the following steps of: acquiring data resource capacity information of the node, wherein the resource capacity information is the capacity size of data to be transmitted; sending a request message in which a first block option is carried to the node, wherein the first block option comprises recommended block capacity; receiving a response message, in which a second block option is carried, of the node, wherein the second block option comprises determined block capacity; and transmitting the data resources of the node by blocks according to the determined block capacity and data resource capacity information of the node. According to the embodiment of the invention, the capacity information of the data resources, required to be transmitted, of the node, can be acquired, the block capacity used during data transmission is determined by block capacity negotiation, therefore, error rate reduction during transmission can be realized, and data can be concurrently transmitted.

Description

technical field [0001] The embodiments of the present invention relate to the field of network communication, and more specifically, to a method and device for data resource transmission. Background technique [0002] The lightweight application layer protocol (Constrained Application Protocol, referred to as "CoAP") is mainly used in IoT (Machine to Machine, referred to as "M2M") scenarios, such as: home controllers, building automation, smart energy, sensor networks Wait. In such an environment, the functions of these machines are relatively simple. Generally, the processor has only 8 bits, the storage space is small, it does not support complex transmission protocols, and the data transmission rate is also low. CoAP provides a request / response interaction model that supports embedded resource discovery, including key web page concepts such as Uniform Resource Identifiers (URIs) and content types. CoAP can be easily translated to Hypertext Link Protocol (HTTP) for integr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L1/00
CPCH04L67/1078H04L67/108H04L67/142H04L67/143H04L69/16H04L69/329H04W28/0236H04W28/10H04W80/12H04L67/12H04L67/5651H04L67/565
Inventor 李克鹏田林一卞永刚陈显锋
Owner HUAWEI TECH CO LTD
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