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Method, device and system for transmitting and receiving data

A data transmission method and data technology, which are applied in the directions of transmission path sub-channel allocation, electrical components, wireless communication, etc., can solve the problems of low frequency efficiency and waste of resources.

Active Publication Date: 2011-11-23
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking DCI as an example, because on the one hand, the number of original bits contained in each DCI is relatively small, DCI format 1C (DCI format 1C) is generally more than a dozen bits, and larger DCI formats such as 2 / 2C generally do not exceed 60 bits , on the other hand, the number of resources in each PRB pair is large, as shown in Table 1, so when DCI transmission is performed according to the existing FDM E-PDCCH scheme, the frequency efficiency will be too low, resulting in waste of resources

Method used

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  • Method, device and system for transmitting and receiving data
  • Method, device and system for transmitting and receiving data
  • Method, device and system for transmitting and receiving data

Examples

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Embodiment Construction

[0038]Embodiments of the present invention provide a method, device, and system for data transmission and reception. By dividing a resource block pair into at least two sub-resource block pairs, and performing resource allocation in the E-PDCCH domain in units of sub-resource block pairs, according to the data and the size of the sub-resource block pair, each data is transmitted by one or more sub-resource block pairs, thereby improving data transmission efficiency.

[0039] An embodiment of the present invention provides a data transmission method, such as image 3 As shown, the method includes:

[0040] Step S301, using the sub-resource block pair as the minimum resource allocation unit, allocate resources for each data in the E-PDCCH domain, wherein the sub-resource block pair is specifically: after dividing each resource block pair into M shares, each resource block A pair is a pair of sub-resource blocks, M≥2;

[0041] Step S302, transmit data on the allocated resources...

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Abstract

The invention discloses a method, device and system for transmitting and receiving data, relating to a communication technology. The method comprises the following steps of: partitioning a resource block pair into at least two sub-resource block pairs, carrying out resource distribution on an E-PDCCH (Evolved-Physical Downlink Control Channel) by the sub-resource block pairs as a unit, and transmitting each data by one or a plurality of sub-resource block pairs according to the sizes of the data and the sub-resource block pairs, so as to improve the data transmission efficiency.

Description

technical field [0001] The present invention relates to communication technology, in particular to a method, device and system for data transmission and reception. Background technique [0002] In a long term evolution (long term evolution, LTE) system, a physical downlink control channel (physical downlink control channel, PDCCH) is sent in each radio subframe, and is formed with a physical downlink shared channel (physical downlink shared channel, PDSCH) The multiplexing relationship of time division multiplexing (TDM), such as figure 1 As shown, the control area is used to transmit the PDCCH, and the data area is used to transmit the PDSCH. The PDCCH is transmitted through the first N orthogonal frequency division multiplexing (OFDM) symbols of a downlink subframe, where the value of N can be 1, 2, 3 or 4, and N=4 is only allowed to appear in In a system with a system bandwidth of 1.4MHz. [0003] The control region for transmitting the PDCCH in the LTE system is compo...

Claims

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Application Information

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IPC IPC(8): H04W72/04
CPCH04L5/003H04W72/0453
Inventor 张然然苏昕荆梅芳林亚男肖国军
Owner DATANG MOBILE COMM EQUIP CO LTD
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