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Method, equipment and system for transmitting enhanced downlink control channel

A technology that enhances downlink control and control channel units, applied in the field of communication, can solve the problems of large granularity and waste of resources, and achieve the effects of reducing granularity, enhancing downlink control channels, and saving resources

Active Publication Date: 2013-03-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the basic unit of a PDCCH is CCE, and one RB pair may be equivalent to the resources of multiple CCEs. Therefore, using one RB pair as the basic unit of E-PDCCH is too granular, which will cause waste of resources.

Method used

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  • Method, equipment and system for transmitting enhanced downlink control channel
  • Method, equipment and system for transmitting enhanced downlink control channel
  • Method, equipment and system for transmitting enhanced downlink control channel

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Embodiment Construction

[0077] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0078] see figure 1 , an embodiment of the present invention provides a method for sending an enhanced downlink control channel, including:

[0079] 101: Preset a multiplexing unit, the multiplexing unit includes at least one resource block pair, and the at least one resource block includes E-PDCCH resources and DM RS resources, and the E-PDCCH resources include multiple control channel units ;

[0080] 102: Send at least one E-PDCCH corresponding to at least one UE in at least one control channel unit of the preset multiplexing unit, and send the at least one E-PDCCH on the DM RS resource of the preset multiplexing unit DM RS corresponding to a UE;

[0081] Wherein, the at least one resource block pair is a PRG (Precoding Resource ...

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Abstract

The invention discloses a method, equipment and system for transmitting an enhanced downlink control channel, belonging to the field of communication. A method for sending an enhanced downlink control channel comprises the following steps of: presetting a multiplexing unit, wherein the multiplexing unit comprises at least one resource block pair, the at least one resource block pair comprises E-PDCCH (enhanced-physical downlink control channel) resource and DM RS, and the E-PDCCH resource comprises multiple control channel units; and sending at least one E-PDCCH corresponding to at least one piece of UE (user equipment) in at least one control channel unit of the multiplexing unit, and sending the DM RS corresponding to the at least one piece of UE. Through the invention, the granularity of the enhanced downlink control channel is reduced, the resources are saved, the enhancement of the downlink control channel is realized, and more control channels can be provided to the UE for use.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for transmitting an enhanced downlink control channel. Background technique [0002] In the 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) LTE (Long Term Evolution, Long Term Evolution) / LTE-A (LTE-advanced, LTE Advanced Evolution) system, the downlink multiple access method usually adopts OFDMA ( OrthogonalFrequencyDivisionMultipleAccess, Orthogonal Frequency Division Multiple Access) mode. The downlink resource of the system is divided into OFDM (Orthogonal Frequency Division Multiple, Orthogonal Frequency Division Multiple Access) symbols in terms of time, and divided into subcarriers in terms of frequency. [0003] According to the LTE Release 8 / 9 / 10 standard, a normal downlink subframe contains two slots, each slot has 7 OFDM symbols, and a normal downlink subframe contains a total of 14 or 12 OFDM symbols , and de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/12
CPCH04L5/00H04W72/1273H04L5/0016H04W72/042H04L5/0048H04L5/0026H04L5/0023H04L5/0053H04B7/2612H04J11/0023H04W72/23
Inventor 吴强钱轶群李洋刘江华
Owner HUAWEI TECH CO LTD
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