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Transmitting data packets over an air interface

A technology of data grouping and air interface, which is applied in the field of data grouping of base stations and radio communication networks, terminals, and transmission of compressed voice data

Inactive Publication Date: 2008-10-08
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A third stream of data packets is then transmitted via the air interface

Method used

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  • Transmitting data packets over an air interface
  • Transmitting data packets over an air interface
  • Transmitting data packets over an air interface

Examples

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Embodiment Construction

[0034] figure 1 is a schematic block diagram of the communication network 100 . The communication network 100 comprises an access network 102 , a first mobile terminal 104 and a second mobile terminal 106 . Access network 102 includes base stations 108 .

[0035] The base station 108 comprises a multiplexer 110, a forward error correction module 112 adapted to perform error correction on received input using an LDPC (Low Density Parity Check Code) scheme. The module 112 is also referred to as the FEC LDPC module 112 hereinafter. Base station 108 also includes modulator 114 and antenna 116 .

[0036] The first mobile terminal 104 includes an antenna 118 , a modem 120 , a FEC LDPC module 122 and a demultiplexer 124 . The second mobile terminal 116 includes such as figure 1 Corresponding components are shown for the mobile terminal 104, but for purposes of brevity, figure 1 These components are not shown.

[0037] Mobile terminal 104 is connected to base station 108 via conn...

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Abstract

A method of transmitting data packets over an air interface is disclosed. At least a first and second stream of data packets are multiplexed, wherein a multiplexed stream of data packets is generated. The multiplexed stream of data packets is processed by a forward error correction function, wherein the forward error correction function adds redundancy bits to the multiplexed stream of data packets, wherein a third stream of data packets is generated, and wherein the redundancy bits are used for an error control to be performed on the third stream of data packets. The third stream of data packets is then transmitted over the air interface.

Description

[0001] The present invention is based on the prior application EP 07 290 418.8, which is hereby incorporated by reference. technical field [0002] The present invention relates generally to methods of transmitting data packets over an air interface, and in particular to methods of transmitting data packets of compressed speech data. The invention also relates to computer program products and hardware components, terminals, base stations and radio communication networks for carrying out the method according to the invention. Background technique [0003] In telecommunications, forward error correction (FEC) is used to control errors in data packets sent by a sender to a receiver over a noisy channel. The sender adds redundant data bits to the data packets, which allows the receiver to detect and correct errors within limits without requiring additional data from the sender. The advantage of forward error correction is that retransmission of data can usually be avoided. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L29/06
CPCH04L1/0045H04L1/0041H04L1/0083H04L1/0057
Inventor 维诺德·库梅尔扬·勒普罗沃塞德里克·马兰
Owner ALCATEL LUCENT SAS
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