Method and system for sending and detecting control signaling and demodulated pilot frequency, and base station

A technology for demodulating pilot and control signaling, applied in multi-frequency code systems, transmission systems, digital transmission systems, etc., and can solve problems such as waste of resources and matching of coding requirements

Inactive Publication Date: 2013-08-14
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] In view of this, the main purpose of the present invention is to provide a control signaling and demodulation pilot transmission and detection method, base station and system, which can solve the problem that REGs composed of an odd number of REs cannot be well integrated with SFBC in the prior art. The coding requirements match; and some vacant REs in the PRB will cause a waste of resources

Method used

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  • Method and system for sending and detecting control signaling and demodulated pilot frequency, and base station
  • Method and system for sending and detecting control signaling and demodulated pilot frequency, and base station
  • Method and system for sending and detecting control signaling and demodulated pilot frequency, and base station

Examples

Experimental program
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Embodiment 1

[0130] This embodiment describes the situation that when the second control region of a PRB includes 24 or 16 DMRS REs, the two REs of each REG in the PRB are located adjacent to each other in the frequency domain.

[0131] like Figure 9 As shown, the second control region of the PRB contains 24 DMRS REs. After removing the 24 DMRS REs (filled with slashes) and the public demodulation pilot (filled with numbers), the two REs of each REG are The mean frequency domains are adjacent to each other. Here, for the sake of description, in the drawings of the specification, the present invention uniformly fills in the dedicated demodulation pilots (port7, 8 and port9, 10) with oblique lines, which is the same in subsequent embodiments.

[0132] like Figure 10 As shown, the second control region of the PRB includes 24 DMRS REs. After removing the 24 DMRS REs (filled with oblique lines), the two REs of each REG are located adjacent to each other in the frequency domain.

[0133] li...

Embodiment 2

[0135] This embodiment describes the situation that when the second control region of a PRB contains an even number of OFDM symbols, the two REs of each REG in the PRB are adjacent in time domain.

[0136] like Figure 12 As shown, the second control region of the PRB contains 12 OFDM symbols, then after removing the 12 DMRS REs (filled with slashes) contained in the PRB, the two REs of each REG are time-domain position phase adjacent.

[0137] like Figure 13 As shown, the second control region of the PRB contains 12 OFDM symbols, then after removing the 12 DMRS REs (filled with oblique lines) and the public demodulation pilot (filled with numbers) contained in the PRB, each The two REs of the REG are located adjacent to each other in the time domain.

[0138] like Figure 14 As shown, the second control region of the PRB contains 10 OFDM symbols, then after removing the 16 DMRS REs (filled with slashes) contained in the PRB, the two REs of each REG are time-domain positi...

Embodiment 3

[0141] This embodiment describes the situation that when a PRB contains 12 DMRS REs, two REs of a part of REGs in the PRB are adjacent in time domain, and two REs of another part of REGs are adjacent in frequency domain.

[0142] like Figure 16 , 17 , 18, and 19, the second control region contains 12 DMRS REs. After removing the 12 DMRS REs (filled with oblique lines), the two REs of some REGs are adjacent in time domain, and the other part The two REs of the REG are located adjacent to each other in the frequency domain.

[0143] In practical applications, preferably, the Figure 17 In the shown setting method, the REG composed of two REs adjacent to each other in the instant domain is located on the 6th and 7th OFDM symbols and the 13th and 14th OFDM symbols in the PRB, and is located on the 0th subcarrier; All are REGs composed of two adjacent REs in the frequency domain.

[0144] In addition, this embodiment also provides that when the second control region of a PRB c...

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Abstract

The invention discloses a method and a system for sending and detecting a control signaling and a demodulated pilot frequency, and a base station. The method includes the steps as follows: the base station maps sends the demodulated pilot frequency on M REs (Resource Elements) corresponding to a PRB (Physical Resource Block) according to a pattern mapped by the demodulated pilot frequency, wherein M represents a positive integer; the base station encodes and modulates the control signaling, maps the control signaling onto a resource with an REG (Resource Element Group) serving as a unit according to the pattern mapped by the determined control signaling and sends the control signaling; and a terminal detects the demodulated pilot frequency and the control signaling which are sent by the base station. With the adoption of the method and the system for sending and detecting the control signaling and the demodulated pilot frequency and the base station, the demodulating performance of the control signaling information can be guaranteed.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, system and base station for sending and detecting control signaling and demodulation pilot. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM for short) technology is essentially a multi-carrier modulation communication technology, which is one of the core technologies in the fourth generation mobile communication (4G). In the frequency domain, the OFDM multipath channel exhibits frequency-selective fading characteristics. In order to overcome this fading, the channel needs to be divided into multiple sub-channels in the frequency domain. The spectral characteristics of each sub-channel are approximately flat, and each of the OFDM The sub-channels are orthogonal to each other, so the spectrums of the sub-channels are allowed to overlap each other, so that the spectrum resources can be utilized to the greatest extent. [0003] Multiple-Inpu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L5/00H04L1/06H04B7/06
Inventor 戴博陈艺戬左志松
Owner ZTE CORP
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