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Methods and apparatus for downlink control channels transmissions in wireless communications systems

A technology of control channel and physical downlink, which is applied in the field of extended downlink control channel transmission, and can solve problems such as inability to achieve frequency domain interference coordination

Active Publication Date: 2014-12-10
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, interference coordination in the frequency domain cannot be achieved

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  • Methods and apparatus for downlink control channels transmissions in wireless communications systems
  • Methods and apparatus for downlink control channels transmissions in wireless communications systems
  • Methods and apparatus for downlink control channels transmissions in wireless communications systems

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Embodiment Construction

[0026] Before beginning the "Detailed Description" section below, it may be beneficial to clarify definitions of certain words or phrases used throughout this patent document: the words "comprises" and variations thereof refer to non-limiting inclusions; the words "or " is inclusive, meaning and / or; the phrases "associated with" and "associated with" and their conjugations may mean including, comprising within, interconnecting with, comprising, containing in, connected to or connected with, coupled to or coupled with, communicated with, collaborated with, interwoven, juxtaposed, close to, bound to, or with binds, has, has the property of, etc.; and the term "controller" means any device, system, or portion thereof that controls at least one operation, where such device, system, or portion may be implemented in a or software programmed in hardware. It should be noted that the functionality associated with any particular controller may be centralized or distributed locally or r...

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Abstract

An antenna port for an extended Physical Downlink Control CHannel (ePDCCH) transmission is determined based on at least an identifier for a leading extended Control Channel Element (eCCE) within the ePDCCH and an identifier for a user equipment (UE) to receive the ePDCCH transmission, and based on whether the ePDCCH transmission is localized or distributed. The determined antenna port is a DeModulation Reference Signal (DMRS) port to which the UE is assigned. Symbols are mapped in sequence to resource elements (REs) and transmitted via the determined antenna port to the UE.

Description

technical field [0001] The present disclosure relates generally to wireless communications and, more particularly, to providing extended downlink control channel transmissions in wireless communications systems. Background technique [0002] In 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) Release 8 (Rel-8), Release 9 (Rel-9) and Release 10 (Rel-10), in the first few limited The Physical Downlink Control Channel (PDCCH), Physical Control Format Indicator Channel (PCFICH) and Physical Hybrid ARQ Indicator Channel (PHICH) are transmitted in Orthogonal Frequency Division Multiplexing (OFDM) symbols. Therefore, this control area has a limited capacity. Furthermore, interference coordination in the frequency domain cannot be achieved. Contents of the invention [0003] technical problem [0004] Therefore, there is a need in the art to extend the control region in the Physical Downlink Shared Channel (PDSCH) region to expand the capacity of the control ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26
CPCH04W72/042H04L5/0023H04L5/0053H04B7/0452H04W72/23H04B7/0404
Inventor 韩臸奎张建中金润善
Owner SAMSUNG ELECTRONICS CO LTD