Multicarrier mobile communication system

a mobile communication system and multi-carrier technology, applied in the field of multi-carrier mobile communication system, can solve the problems of poor retransmission efficiency and achieve the effect of improving an efficiency per retransmission and retransmission efficiency poor

Active Publication Date: 2011-01-06
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect of this patented technology is that it improves the efficiency of transmitting data over multiple carriers without losing any more important bits or reducing overall performance.

Problems solved by technology

This patent describes a problem where multiple devices use different types of wireless networks simultaneously. These systems have varying delays due to factors like distance between them or interference caused by signals from neighboring devices. To solve this issue, there is a solution called Multi Carrier Mobile Communications System (MCMS). However, current methods such as those mentioned earlier cannot efficiently allocate resources among different devices.

Method used

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  • Multicarrier mobile communication system

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Embodiment Construction

[0023]Hereinafter, a multicarrier mobile communication system according to the present invention will be described in detail with reference to the attached drawings. The multicarrier mobile communication system according to an exemplary embodiment of the present invention is applied to an Orthogonal Frequency Division Multiple Access (OFDMA) system or a Single Carrier-Frequency Division Multiple Access (SC-FDMA) system.

[0024]FIG. 1 illustrates a configuration of the multicarrier mobile communication system according to the exemplary embodiment of the present invention. The multicarrier mobile communication system according to the exemplary embodiment of the present invention is provided with a receiving unit 1 and a transmitting unit 2 that are connected to a radio network. For example, the receiving unit 1 is used as a mobile terminal by a user, and the transmitting unit 2 is used as a base station apparatus that is provided in the base station.

[0025]The receiving unit 1 is provided w

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Abstract

A transmitting unit divides a transmit data into a plurality of code blocks, and encodes each of the plurality of code blocks to generate a transmission signal. The transmitting unit transmits the transmission signal, and a receiving unit receives the transmission signal as a reception signal. The receiving unit receives performs an iterative decoding to each of the plurality of code blocks of the reception signal. The iterative decoding is terminated to a first code block group in which an error has not been detected before a first setting iteration count. The receiving unit, when being an error in the reception signal, transmits a retransmission request feedback data which contains a NACK data and a data indicating the first code block group to the transmitting unit. First resources are assigned for each of the plurality of code blocks of the transmission signal. The transmitting unit assigns resources of the first code block group of the plurality of code blocks of the transmission signal to second resources which are fewer than the first resources, based on the retransmission request feedback data, and retransmits the transmission signal to the receiving unit.

Description

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Claims

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Application Information

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Owner NEC CORP
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