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Device for adaptation of modulation and encoding scheme(s) of data intended to be broadcast to radio communication terminals

A wireless terminal and coding scheme technology, applied in wireless communication, channel coding adjustment, transmission modification based on link quality, etc., can solve problems such as other constraints are not considered, not optimal, harmful, etc.

Inactive Publication Date: 2009-08-12
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the radio access network performs data modulation and coding scheme modifications based on biased measurements, which are not optimal and actually prove harmful
[0011] Furthermore, wireless terminals may be subject to other constraints besides wireless conditions, which are not currently considered

Method used

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  • Device for adaptation of modulation and encoding scheme(s) of data intended to be broadcast to radio communication terminals

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Embodiment Construction

[0031] The object of the present invention is to enable the radio access network of a wireless communication network to be based on actual (or true) wireless communication on links established between the wireless network and its wireless terminals, which are recipients of the data to be broadcast. Propagation conditions, modifying the modulation and coding scheme of the data (possibly multimedia data) that must be broadcast to wireless terminals via a broadcast forward channel by means of a dedicated carrier.

[0032] In the following, by way of non-limiting example, it is assumed that the communication terminal is a mobile (or cellular) telephone. However, the present invention is not limited to this type of wireless terminal. Rather, it is suitable for any fixed or mobile (or portable or cellular) communication device capable of exchanging data in waves with another device via a radio access network. Therefore, they can also be fixed or mobile (or cellular) telephones 、 A...

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Abstract

A device is dedicated to the adaptation of modulation and encoding scheme(s) for data intended to be broadcast by means of a dedicated carrier on a forward channel of a radio communication network to radio terminals (UE) connected to at least this radio communication network. This device (D) comprises processing means (MT)responsible for adapting at least one data modulation and encoding scheme, to be broadcast by means of the dedicated carrier, according to actual radio transmission conditions on links established between the radio network and recipient radio terminals (UE) to which the data are to be broadcast.

Description

technical field [0001] The invention relates to a wireless communication network having a first frequency band or a first time slot for broadcasting data to wireless communication terminals with a waveform and by means of a carrier dedicated to the broadcast service over a so-called forward channel. Background technique [0002] Here, "wireless communication network" refers to any type of network that has access to a wireless access network capable of broadcasting data. In particular, it may be a satellite network, such as the SDMB network (for "Satellite Digital Multimedia Broadcasting"); or it may be a terrestrial wireless network, such as a broadcast-capable UMTS network (for example, MBMS (for "Multimedia Broadcast / Multimedia Broadcasting"). broadcast service") network), or its evolution known as LTE ("Long Term Evolution"), or GPRS, or DVB-H (for "Digital Video Broadcasting - Handheld" - used for mobile TV); or it It can be a hybrid network, ie a satellite-based and te...

Claims

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Application Information

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IPC IPC(8): H04W4/06H04W28/04H04L1/00
CPCH04L1/0026H04L12/189H04L1/0009H04L1/0003H04W4/06
Inventor S·布尔特
Owner ALCATEL LUCENT SAS
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