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Enhanced downlink control signal channel transmission method and device

A technology of control channel and transmission method, which is applied in the field of transmission method and device of downlink control channel, and can solve problems such as being unable to support such carrier work

Active Publication Date: 2012-07-18
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

E-PDCCH technology that relies on legacy PDCCH cannot support such carriers to work independently of other carriers

Method used

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  • Enhanced downlink control signal channel transmission method and device
  • Enhanced downlink control signal channel transmission method and device
  • Enhanced downlink control signal channel transmission method and device

Examples

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Embodiment Construction

[0032]Embodiments of the present invention provide an enhanced downlink control channel transmission method and device, by allocating time-frequency resources for E-PDCCH according to a preset search space within a preset time-frequency resource range in a subframe, so that a terminal receives The time-frequency resources that may be used by the E-PDCCH can be known after the MIB transmitted by the PBCH, so that blind detection can be performed on the corresponding time-frequency resources to receive DCI on the E-PDCCH. Such as image 3 As shown, the enhanced downlink control channel transmission method provided by the embodiment of the present invention includes:

[0033] Step S301, the terminal determines to receive the E-PDCCH;

[0034] Step S302, the terminal performs blind detection according to a preset search space within the determined E-PDCCH time-frequency resource range to receive the E-PDCCH.

[0035] Since the E-PDCCH is transmitted using the time-frequency reso...

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Abstract

The invention discloses an enhanced downlink control signal channel transmission method and an enhanced downlink control signal channel transmission device and relates to the communication technology. Time frequency resources are distributed for E-physical downlink control channel (E-PDCCH) according to the preset search space in a preset time frequency resource range in sub frames, so a terminal can obtain the time frequency resources capable of being used by E-PDCCH after receiving a management information base (MIB) transmitted by a physical broadcast channel (PBCH), further, the blind detection can be carried out on the corresponding time domain resources, and digital copyright identifiers (DCI) can be received on the E-PDCCH.

Description

technical field [0001] The present invention relates to communication technology, in particular to an enhanced downlink control channel transmission method and device. 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] After receiving a primary synchronous signal (PSS) and a secondary s...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04W72/08
CPCH04W28/16H04L5/0053H04L5/00H04L5/0048H04W72/04
Inventor 张然然拉盖施赵锐潘学明
Owner DATANG MOBILE COMM EQUIP CO LTD
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