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Method for adapting output power of a radio transmitter and the corresponding wireless node

A wireless transmitter and wireless node technology, applied in power management, wireless communication, electrical components, etc.

Active Publication Date: 2015-07-15
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, nearby mobile devices outside the moving car may try to connect to the internal repeater / repeater, which may only be in the middle

Method used

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  • Method for adapting output power of a radio transmitter and the corresponding wireless node
  • Method for adapting output power of a radio transmitter and the corresponding wireless node
  • Method for adapting output power of a radio transmitter and the corresponding wireless node

Examples

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Embodiment Construction

[0016] figure 1 Mobile device 110 is shown located inside enclosure 100 and served by wireless node 104 . Enclosure 100 represents a vehicle, building, cabin, room, or the like. Wireless nodes 104 may be (L1 / L2 / L3) relay stations or repeaters. Wireless node 104 includes external antenna system 106 and internal antenna system 108 . External antenna system 106 is located outside enclosure 100 for communicating with external wireless nodes (eg, base station 102). A base station provides wireless access to a wireless network (not shown). To communicate with base stations, mobile devices 100 within enclosure 100 rely on wireless nodes 104 to relay wireless signals to and from base stations 102 .

[0017] External antenna system 106 receives wireless signals aimed at mobile device 110 . With or without wireless node 104 processing, internal antenna system 108 relays or forwards received wireless signals to mobile device 110 . External antenna system 106 may also transmit wirel...

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PUM

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Abstract

Methods and apparatus are disclosed for improving radio transmissions between a mobile device located inside an enclosed structure and an outside radio network. A relay or repeater is used to relay transmissions back and forth between the inside mobile device and the outside radio network. The transmission power of the relay / repeater used to transmit signals to the mobile device and that of the mobile device used to communicate with the relay / repeater can be dynamically adjusted in accordance with the penetration loss of the enclosed structure.

Description

technical field [0001] The invention relates to a method and a device for adapting the output power of a wireless transmitter located inside an enclosed structure. Background technique [0002] Mobile broadband commerce is growing rapidly. User equipment is getting cheaper and data rates are getting higher. New businesses and applications that were previously unsupportable are becoming routine features. These new services and applications may require long-term or frequent access to wireless networks, for example, even when the user is in a vehicle such as a car, truck, train or airplane. In most cases, vehicles are moving rapidly and surrounded by metal surfaces, which creates difficulties for mobile devices inside the vehicle to communicate with nearby mobile networks. An enclosed vehicle is similar to a Faraday cage, and wireless transmissions to and from the vehicle are attenuated due to the well-known Faraday cage effect. In addition to vehicles, buildings with walls...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/46H04W52/24
CPCH04W52/244H04W52/242H04W52/46
Inventor 迈克尔·迈耶约艾西摩·萨赫斯
Owner TELEFON AB LM ERICSSON (PUBL)