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Multi-hop wireless communications network including a plurality of nodes and method for reducing power consumption in such a network

A node and source node technology, applied in the field of wireless communication, can solve the problem of increased power consumption in the code conversion process, and achieve the effect of reducing power consumption

Active Publication Date: 2005-11-16
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This prevents error propagation, but at the cost of increased power consumption due to the complexity of the transcoding process

Method used

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  • Multi-hop wireless communications network including a plurality of nodes and method for reducing power consumption in such a network
  • Multi-hop wireless communications network including a plurality of nodes and method for reducing power consumption in such a network
  • Multi-hop wireless communications network including a plurality of nodes and method for reducing power consumption in such a network

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Embodiment Construction

[0016] system structure

[0017] attached figure 1 Shown is a wireless communication network 100 in accordance with the present invention. The network 100 includes a source node 110 , an intermediate node 130 and a destination node 120 . The output of the source node is signal 111 . The signal includes a relay request 112 , a message 113 , a relay mode power requirement 114 and a regenerative mode power requirement 115 .

[0018] The power savings manifests itself as the difference between the amount of power required to send a message on the indirect path 116 and the direct path 117 .

[0019] system operation

[0020] FIG. 2 shows a method 200 for reducing power consumption in a multi-hop wireless communication network 100 according to the present invention. The intermediate node 130 receives 210 the signal 111 from the source node 110 .

[0021] In step 220 , the intermediate node 130 determines whether to accept or reject the request 112 from the source node 110 to r...

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Abstract

A system and method reduce power consumption in a multi-hop wireless communications network. A signal is received from a source node in an intermediate node. The signal includes a request to relay a message to a destination node. The request includes information on power requirements to relay the message either in a relay mode or a regeneration mode. If the available power at the intermediate node exceeds the power requirements, then the request is accepted. Either the relay mode or the regeneration mode is selected, based on criteria for retransmitting the message, and the message is then relayed to the destination node using the selected mode.

Description

technical field [0001] The present invention relates generally to the field of wireless communications, and more particularly to power efficient multi-hop data transmission in wireless communications networks. Background technique [0002] In wireless networks in particular, transceivers or "nodes" are arranged to communicate with each other without any network infrastructure or centralized management authority. This structural setup can be static or dynamic, or a combination thereof. A node may be a cellular phone, a portable computing device, or a dedicated device such as a sensor. Nodes in the network establish lines between themselves to form their own network. Due to the limited transmission range of transceivers, a message from a source node may have to pass through one or more intermediate routing nodes before reaching its destination. [0003] Especially in wireless networks, most (if not all) nodes are battery powered. Therefore, minimizing power consumption is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56
CPCH04B7/15557H04W52/0277H04W88/04Y02B60/50Y02D30/70
Inventor 菲利普·奥利克泽弗·萨西诺鲁张晋云
Owner MITSUBISHI ELECTRIC CORP