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A data transmission method and device

A transmission method and data technology, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve the problem of shunting cellular network data traffic, increasing the network overhead of holding nodes, and inability to effectively use multiple holding nodes, etc. problems, to achieve the effect of improving transmission performance and reducing network overhead

Active Publication Date: 2018-07-24
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the amount of data is very large, such as video, high-quality audio and other big data, a holding node transmits the entire content of the entire big data to the requesting node, which will increase the network overhead of the holding node and cannot be used effectively Multiple holding nodes to split the data traffic of the cellular network

Method used

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  • A data transmission method and device
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  • A data transmission method and device

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Embodiment 1

[0023] Aiming at the problems existing in the prior art, Embodiment 1 of the present invention proposes a data transmission method, which is applied to a network including a network control node, a requesting node, and multiple holding nodes, such as wireless communication networks such as DTN . Among them, the requesting node is the source node of the requested data, that is, the target receiver of the data; the holding node is the node holding the data requested by the requesting node, that is, the node containing the requested data.

[0024] Wherein, the nodes referred to in the embodiment of the present invention are nodes such as base station equipment and relay equipment.

[0025] When the data traffic in the cellular system increases sharply, the offload mechanism will be activated and enter the warm-up phase. In the warm-up phase, the network control node will collect enough node information, and use the node information for related processing in the subsequent proces...

Embodiment 2

[0076] Based on the same inventive concept as the above method, the embodiment of the present invention also provides a network control node, which is applied to the network including the network control node, the requesting node and the holding node, such as Figure 5 As shown, the network control node specifically includes:

[0077] The determination module 11 is configured to determine multiple holding nodes containing the data when it is necessary to transmit data with a data volume greater than a preset threshold to the requesting node, and divide the data into multiple data packets; the calculation module 12, For each holding node among multiple holding nodes, for each path between the holding node and the requesting node, determine the encounter time interval between every two adjacent nodes on the path, and use The path weight of the path is calculated for the encounter time interval between every two adjacent nodes on the path; the selection module 13 is configured to...

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Abstract

An embodiment of the invention discloses a method and a device for transmitting data. The method includes determining encountering time intervals between each two adjacent nodes on each path between possession nodes and request nodes and computing path weights of the paths by the aid of the encountering time intervals; selecting alternative paths for each data packet from the various paths according to the path weights of the various paths between the possession nodes and the request nodes and cache capacity of the various nodes on the various paths and selecting the optimal paths from the alternative paths of each possession node; informing the possession nodes corresponding to the optimal paths to transmit the data packets, and transmitting the data packets to the request nodes via the optima paths by the aid of the possession nodes corresponding to the optimal paths. The various nodes on the various paths are positioned between the possession nodes and the request nodes. The selected alternative paths are positioned on the possession nodes. The selected optimal paths correspond to the data packets. The method and the device in the embodiment of the invention have the advantages that data flow of cellular networks can be effectively distributed by the aid of the multiple possession nodes, and accordingly the transmission performance of the big data networks can be improved.

Description

technical field [0001] The present invention relates to a wireless communication system, in particular to a data transmission method and device. Background technique [0002] Due to the explosive growth of mobile users, a large amount of data traffic has exceeded the capacity of the cellular network and deteriorated the network quality. Therefore, transferring part of the data traffic to other networks is an effective means. DTN (Delay Tolerant Networks, delay tolerant network) is a new type of wireless communication network, which mainly performs communication transmission under the conditions of high delay, intermittent connection, and asymmetric rate. In order to alleviate the increasingly serious load pressure of the cellular network, DTN is used It is an effective and feasible option to divert traffic. [0003] In the routing technology of DTN, for a piece of data, a suitable holding node is selected from all holding nodes, and the data is sent to the requesting node t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/10H04W40/02
CPCH04W28/10H04W40/02
Inventor 张勇宋梅郭达魏翼飞滕颖蕾满毅王莉刘洋鲍叙言周小金王小娟程刚王小军刘宁宁司旭
Owner BEIJING UNIV OF POSTS & TELECOMM