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Group-based resource element mapping for radio transmission of data

A technology of resource units and group resources, which is applied in the field of sending data by radio interface, and can solve problems such as complex decoding

Active Publication Date: 2016-08-31
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the parallelization of channel estimation and MIMO equalization is implemented based on PRB bundles as described above, decoding a code block requires outputs from multiple parallelization instances, which significantly complicates decoding

Method used

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  • Group-based resource element mapping for radio transmission of data
  • Group-based resource element mapping for radio transmission of data
  • Group-based resource element mapping for radio transmission of data

Examples

Experimental program
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Embodiment Construction

[0041] Hereinafter, concepts according to embodiments of the present invention will be explained in more detail with reference to the accompanying drawings. The illustrated concept involves sending data over a radio interface using subframes with resource elements organized as a time-frequency grid. Specifically, it is assumed that the radio interface is based on LTE radio technology. Scenarios of DL data transmission with reference to OFDM transmission mode based on LTE radio technology are explained below. However, it will be understood that the concept can be applied in a corresponding manner to the scenario of UL data transmission based on DFT extended OFDM transmission mode of LTE radio technology. Furthermore, it will be appreciated that the concept can also be applied based on other radio technologies in which resource elements are organized as a time-frequency grid.

[0042] figure 1 A time-frequency grid is shown schematically. As shown in the figure, the time-fre...

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Abstract

For transmitting data over a radio interface using subframes with a plurality of resource elements organized in a time-frequency grid, at least two groups of resource elements are determined from the resource elements of one of the subframes. Each group covers multiple consecutive resource elements in the time domain and is distinct from the at least one other group in the frequency domain. Data symbols of a sequence are consecutively mapped to the resource elements of one of the groups. If a data symbol is mapped to each resource element of the group, the next data symbols of the sequence are consecutively mapped to the resource elements of a further one of the groups.

Description

technical field [0001] The invention relates to a method for transmitting data over a radio interface using a subframe with a plurality of resource units organized as a time-frequency grid and to a corresponding device. Background technique [0002] In cellular networks it is known to assign resource units of available radio capacity for data transmission to / from a user equipment (UE). Specifically, such resource units may be organized as a time-frequency grid. [0003] For example, LTE (Long Term Evolution) radio technology specified by 3GPP (Third Generation Partnership Project) uses Orthogonal Frequency Division Multiplexing (OFDM) for downlink (DL) transmission to UEs, and discrete Fourier transform Transform (DFT) spread OFDM (also known as Single Carrier (SC) OFDM) is used for uplink (UL) transmissions from UEs. In this case, the available resources may be organized as a time-frequency grid of subcarriers with a width of 15 kHz and a time unit corresponding to the du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00
CPCH04L5/0007H04L5/0023H04L5/0041H04L5/0048H04L5/0082H04L5/0026H04W72/044
Inventor 卡尔·维尔纳约翰·福鲁斯克
Owner TELEFON AB LM ERICSSON (PUBL)
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