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Signal sending method and device

A signal transmission and signal technology, applied in the field of wireless communication, can solve problems such as decoding errors

Active Publication Date: 2013-10-30
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The above problems also exist in E-PDCCH, resulting in decoding errors

Method used

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0045] In E-PDCCH, each E-PDCCH is still composed of Mi (i is an integer of 0, 1, .., I-1, where i represents the aggregation level, I represents the number of aggregation levels, and the value It can be composed of 1, 2, 4, 8) logical units similar to CCE, and needs user equipment to perform blind detection. The control information in the E-PDCCH is obtained through convolutional coding with a mother code of 1 / 3 and rate matching based on circular buffering, just ...

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Abstract

The invention discloses a signal sending method and device. The method comprises the steps that according to the number of control channel elements (eCCE) occupied by an enhanced physical downlink control channel (E-PDCCH), a scrambling code sequence corresponding to the E-PDCCH is acquired; signals carried by the E-PDCCH are scrambled through the corresponding scrambling code sequence; the scrambled signals are sent to receiving equipment. Due to the adoption of the signal sending method and device, the scrambling sequence is scrambled to assist in decoding, and therefore decoding errors in a blind test can be avoided.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a signal sending method and device. Background technique [0002] In the 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) Long Term Evolution (Long Term Evolution, LTE) / LTE-Advanced Evolution (LTE-advanced, LTE-A) system, the downlink multiple access method usually adopts an orthogonal Frequency Division Multiple Access (Orthogonal Frequency Division Multiple Access, OFDMA) mode. The downlink resources of the system are divided into Orthogonal Frequency Division Multiplex (Orthogonal Frequency Division Multiple, OFDM) symbols in terms of time, and are divided into subcarriers in terms of frequency. [0003] According to the LTE Release 8 / 9 / 10 standard, a normal downlink subframe includes two slots, and each slot has 7 OFDM symbols. And the size of resource block (Resource Block, RB) is defined. One RB contains 12 subcarriers in the frequency do...

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Application Information

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IPC IPC(8): H04W72/04H04L5/00
CPCH04L1/0057H04L25/03866H04W72/00H04L5/0053
Inventor 吴强刘江华高驰李超君
Owner HUAWEI TECH CO LTD
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