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Method for mapping physical downlink control channel to resources and apparatus for transmitting/receiving the mapped physical downlink control channel in a wireless communication system

A physical downlink and wireless communication system technology, applied in wireless communication, transmission path separation device, transmission path sub-channel allocation, etc., can solve the problems of performance degradation, performance degradation, lack of random effects, etc.

Inactive Publication Date: 2012-10-10
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the lack of random effects can lead to performance degradation when interference occurs between control channels from different Node Bs
In other words, any control channel is sensitive to some statistically strong interference, with consequent performance degradation

Method used

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  • Method for mapping physical downlink control channel to resources and apparatus for transmitting/receiving the mapped physical downlink control channel in a wireless communication system
  • Method for mapping physical downlink control channel to resources and apparatus for transmitting/receiving the mapped physical downlink control channel in a wireless communication system
  • Method for mapping physical downlink control channel to resources and apparatus for transmitting/receiving the mapped physical downlink control channel in a wireless communication system

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Embodiment Construction

[0025] The subject matter defined by the description, such as the detailed structure and elements, is provided to assist a thorough understanding of the exemplary embodiments of the present invention. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions will be omitted for clarity and conciseness.

[0026] In order to implement the method for mapping control channels to resources according to the present invention, a resource allocation unit for control channel transmission, a control channel element (CE), is defined. The difference between a CE and a resource block is that a CE is a resource allocation unit for transmission of a control channel, while a resource block is a resource allocation unit for data transmission. When at least one control channel is sc...

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Abstract

A method for mapping a Physical Downlink Control Channel (PDCCH) to resources and an apparatus for transmitting / receiving the mapped PDCCH in a wireless communication system are provided, in which if at least one PDCCH is scheduled to be transmitted in a subframe according to a predetermined scheduling scheme, the PDCCHs are concatenated, interleaved, and mapped to at least one Resource Element (RE).

Description

technical field [0001] The present invention generally relates to methods and apparatus for efficiently using control channels in wireless communication systems to achieve maximum interference diversity. More particularly, the present invention relates to a method and apparatus for efficiently mapping a Physical Downlink Control Channel (PDCCH) to time-frequency resources in an Orthogonal Frequency Division Multiple Access (OFDMA) wireless communication system. Background technique [0002] Recently, Orthogonal Frequency Division Multiplexing (OFDM) is being actively studied as a promising means for high-speed data transmission on wired / wireless channels in mobile communication systems. OFDM is a special case of Multi-Carrier Modulation (MCM), where an input sequence of serial symbols is converted to a sequence of parallel symbols and modulated onto orthogonal subcarriers, ie, subcarrier channels. OFDMA is a multi-user version of OFDM, where multiple users are distinguished...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26
CPCH04L5/0039H04W72/044H04L5/0007H04W48/12H04L5/0023H04L27/2601
Inventor 俞在天权桓准金东熙林妍周
Owner SAMSUNG ELECTRONICS CO LTD