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Method and device for transmitting control information

A technology for transmitting control and control information, which is applied in the field of communication, and can solve problems such as not providing diversity mode transmission control information

Active Publication Date: 2012-04-18
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] Aiming at the problem of not providing diversity mode transmission control information in the prior art, the embodiment of the present invention provides a method and device for transmitting control information in diversity mode, a method for receiving transmission control information and its device, so as to provide a Method of sending control information based on diversity transmission mode

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  • Method and device for transmitting control information

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Embodiment Construction

[0042] Aiming at the problem of not providing diversity mode transmission control information in the prior art, the embodiments of the present invention provide a method and device for transmitting control information in diversity mode, and a method and device for receiving transmission control information. The method for transmitting control information in the embodiment of the present invention is as follows: determine multiple enhanced control channel elements E-CCEs for transmitting E-PDCCH, each E-CCE contains the same number of E-REGs, and each E-CCE contains The multiple E-REGs belong to different frequency resource blocks RB; each downlink control information DCI that needs to be transmitted on the E-PDCCH is carried in at least one E-CCE for transmission. By adopting the technical solution of the present invention, since the multiple E-REGs included in each E-CCE belong to different frequency resource block RBs, each DCI that needs to be transmitted is carried on at le...

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Abstract

The invention discloses a method and a device for transmitting control information, and provides a diversity transmission model-based control information transmitting mode. The method for transmitting the control information comprises the following steps of: ensuring that each enhanced-control channel elements E-CCE for transmitting an enhanced-physical downlink control channel (E-PDCCH) comprises a plurality of enhanced-resource element groups (E-REGs) with the same quantity, and the E-REGs of each E-CCE are respectively assigned to different frequency RB (resource blocks); and bearing each downlink control information (DCI) transmitted on the E-PDCCH into at least one E-CCE to be transmitted. Each part in one DCI is respectively borne on a plurality of different frequency bands which correspond to the E-PDCCH to be transmitted, so that the transmitting stability and reliability of the DCI can be improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for transmitting control information. Background technique [0002] In order to improve LTE-A (Long Term Evolution, long-term evolution) system performance and expand PDCCH (Physical Downlink Control Channel, physical downlink control channel) capacity, E-PDCCH (i.e. enhanced physical downlink control channel) was introduced in the Rel-11 version . The current standard discussion has determined that the E-PDCCH should support two modes of beamforming transmission and diversity transmission, which are applied in different scenarios. For the diversity transmission mode, its specific transmission scheme has not been proposed yet. [0003] In the LTE system, the PDCCH is sent in each radio subframe, and forms a TDM (Time Division Multiple, Time Division Multiplexing) multiplexing relationship with the PDSCH (Physical Downlink Shared Channel, Physical Downlink S...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04L27/26
CPCH04W28/22H04W72/042H04L5/0041H04W72/12H04L5/0053H04B7/0617H04B7/0667H04B7/0671H04B7/0689H04B7/12H04B7/2612H04J11/0023H04J2211/005H04L5/0007
Inventor 潘学明沈祖康赵锐
Owner DATANG MOBILE COMM EQUIP CO LTD