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WO2012106991A1 - Procédé et dispositif d'activation et de détection d'informations de commande - Google Patents

Procédé et dispositif d'activation et de détection d'informations de commande Download PDF

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Publication number
WO2012106991A1
WO2012106991A1 PCT/CN2012/070986 CN2012070986W WO2012106991A1 WO 2012106991 A1 WO2012106991 A1 WO 2012106991A1 CN 2012070986 W CN2012070986 W CN 2012070986W WO 2012106991 A1 WO2012106991 A1 WO 2012106991A1
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WO
WIPO (PCT)
Prior art keywords
control information
ack
information
nack
symbol
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2012/070986
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English (en)
Chinese (zh)
Inventor
戴晓明
黄琛
唐胜志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Academy of Telecommunications Technology CATT
Original Assignee
China Academy of Telecommunications Technology CATT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Academy of Telecommunications Technology CATT filed Critical China Academy of Telecommunications Technology CATT
Publication of WO2012106991A1 publication Critical patent/WO2012106991A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1861—Physical mapping arrangements

Definitions

  • TECHNICAL FIELD The present invention relates to the field of wireless communications, and in particular, to a method and an apparatus for controlling information activation detection.
  • Background Art In a wireless communication system, in order to ensure normal transmission of a traffic channel, it is notified by feedback control information whether the traffic channel is correctly received or the wireless channel shield. However, when the control information should be sent, but the sender does not send the control information due to some abnormal conditions, the receiver will still send the control information by default, and the problem will occur: The receiver will go to the resource without sending the control information. Detecting control information, causing virtual detection, will affect the normal transmission of the traffic channel.
  • the existing schemes are divided into two categories: A type of default UE (User Equipment) sends control information and directly performs detection and judgment of control information.
  • the disadvantages of this type of scheme are: virtual detection of control information;
  • the class performs the activation detection of the control information: using the detection symbol and the control symbol Euclidean distance or using the correlation between the detection symbol and the control symbol to determine whether the UE transmits the control information, the existing scheme of this type is insufficient: Whether the UE sends control information.
  • the ACK/NACK (Acknowledgement/ Negative Acknowledgement) information corresponding to the PDSCH (Physical Downlink Shared Channel) carried by the PUSCH (Physical Uplink Shared Channel) is for example, the shortcomings of the existing solutions are:
  • the detection schemes of the ACK/NACK carried by the existing PUSCH are classified into two types: a third type and a fourth case that do not consider the above description, that is, the default UE sends ACK/NACK information, and performs ACK/NACK information detection.
  • Judge. This type of scheme will cause virtual detection of ACK/NACK information, especially if the detection result at this time is judged as ACK information, which will seriously affect the normal transmission of the traffic channel, resulting in leakage of traffic channel data;
  • Activation detection of the /NACK information Whether the UE transmits the ACK/NACK information by using the detected symbol with the ACK/NACK symbol Euclidean distance or by using the detected symbol and the ACK/NACK symbol correlation.
  • the technical problem to be solved by the present invention is to provide a method and device for controlling activation of information to reduce the false detection probability of control information.
  • a method for detecting activation of a control information which includes the following steps:
  • control information is judged according to the detection symbol, and the detection symbol and the control information modulation constellation point.
  • An apparatus for controlling activation of information is further provided in the embodiment of the present invention, including:
  • a determining module configured to determine a detection symbol, and to detect a symbol and a control information modulation constellation point
  • the determining module is configured to determine whether the control information is carried according to the detection symbol, and the detection symbol and the control information modulation constellation point.
  • the technical solution provided by the embodiment of the present invention can perform activation detection on the control information, and can effectively reduce the false detection probability of the control information.
  • FIG. 1 is a schematic flowchart of a method for implementing control information activation detection according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a process of transmitting ACK/NACK information of a PUSCH according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of an apparatus for detecting activation of a control information according to an embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE INVENTION The inventors have noticed during the invention that: Among the control information, ACK/NACK information is more important. Below
  • the ACK/NACK information corresponding to the PDSCH carried by the PUSCH is described as an example.
  • the LTE (Long Term Evolution) specification indicates that users can carry feedback information through the PUSCH, such as ACK/NACK, RI ( Rank Indicator, Rank Information Indicator), PMI (Precoding Matrix Index), CQI (Channel). Quality Indicator, channel shield indication, etc., where ACK/NACK is important for the transmission process of the downlink traffic channel.
  • the base station determines whether to send new downlink traffic channel data to the user by detecting ACK/NACK, or according to HARQ (Hybrid Automatic Repeat Request). , Hybrid Automatic Repeat Request) The process resends the last downlink traffic channel data.
  • HARQ Hybrid Automatic Repeat Request
  • the UE correctly receives the PDCCH (Physical Downlink Control Channel) information for scheduling the PDSCH and detects the PDSCH, and generates ACK/NACK there are two possibilities: 1) If the UE also receives Scheduling the PDCCH of the PUSCH, and instructing to transmit the PUSCH on the subframe in which the HARQ-ACK is fed back, the UE transmits the PUSCH data, and carries the ACK/NACK on the PUSCH, and the base station ACKs the location of the ACK/NACK on the PUSCH. /NACK detection and decoding, but there may be cases of missed detection.
  • PDCCH Physical Downlink Control Channel
  • the UE If the UE does not correctly receive the PDCCH for scheduling the PUSCH, the UE does not transmit the PUSCH, and therefore does not send the ACK/NACK. This is equivalent to transmitting the noise, but the base station does not know that the UE has not sent the PUSCH and has not sent. ACK/NACK, therefore, ACK/NACK detection is still performed according to the location where the ACK is carried on the PUSCH, causing virtual detection.
  • the UE If the UE does not correctly receive the PDCCH scheduling the PDSCH, the UE will not generate an ACK/NACK, but the e-NodeB will still detect the ACK/NACK at the location where the PUSCH carries the ACK/NACK, and may be judged as an ACK. There may also be two situations at this time:
  • the UE If the UE also receives the PDCCH scheduling the PUSCH, the UE will transmit the PUSCH but will not carry the ACK/NACK on the PUSCH. At this time, the data at the location where the PUSCH should carry the ACK/NACK is still the service data of the PUSCH, but the base station does not know that the UE does not send the ACK/NACK, and still carries on the PUSCH.
  • ACK/NACK is detected at the location of the ACK/NACK, which may cause a false check.
  • the existing schemes are divided into two categories: One category does not consider the third and fourth cases described above, that is, the default UE transmits ACK/NACK information, and performs ACK/NACK information detection and judgment. This type of scheme will cause false detection of ACK/NACK information, especially if the detection result at this time is judged as ACK information, which will seriously affect the normal transmission of the traffic channel, resulting in leakage of traffic channel data; Activation detection of /NACK information: Judging the Euclidean distance of the detected symbol with the ACK/NACK symbol or using the correlation between the detected symbol and the ACK/NACK symbol Whether the UE has sent ACK/NACK information. However, there is currently no better way to effectively judge this type of scheme.
  • RAN4 ( RAN
  • the technical solution provided by the embodiment of the present invention reduces the probability of virtual detection of control information by introducing a manner in which control information is activated and detected.
  • Specific embodiments of the present invention will be described below with reference to the accompanying drawings.
  • the ACK/NACK information corresponding to the PDSCH carried by the LTE system PUSCH is mainly taken as an example to introduce the ACK/NACK information activation detection scheme to reduce the false detection probability of the ACK/NACK information.
  • Step 101 Determine a detection symbol, and detect a symbol and a control information modulation constellation point;
  • Step 102 Determine, according to the detection symbol, and the detection symbol and the control information modulation constellation point, whether the control information is carried.
  • the method may include:
  • the equivalent signal-to-noise ratio is constructed according to the detection symbol, and the detection symbol and the control information modulation constellation point, and whether the control information is transmitted is determined by the magnitude of the equivalent signal-to-noise ratio.
  • constructing an equivalent signal to noise ratio may include:
  • the number of correlations between the detected symbol and the control information modulation constellation point is a numerator, and the distance between the detected symbol and the control information modulation constellation point is a denominator.
  • the distance between the detection symbol and the control information modulation constellation point can be measured by the Euclidean distance.
  • the equivalent signal-to-noise ratio of the control information receiving symbol is used as an index quantity to determine whether the control information is carried, to detect the correlation between the symbol and the control information modulation constellation point as a numerator, to detect the distance between the symbol and the control information modulation constellation point (eg Euclidean distance) is the amount of the denominator to determine whether or not the control information is carried at these locations.
  • the correlation number of the received detection symbol and the control information modulation constellation point may be regarded as a signal component
  • the distance between the reception detection symbol and the control information modulation constellation point (such as Euclidean distance) may be regarded as a noise component.
  • the numerator of the ratio tends to control the total power of the information modulation constellation point, and the denominator tends to zero, then the ratio tends to infinity. If the control information is not carried, and the received data is random data or noise, then the numerator of the ratio tends to zero, and the denominator tends to control the total power of the information modulation constellation point, then the ratio tends to zero. Determining whether the control information is sent by comparing the ratio with a certain threshold value: if the ratio is greater than the threshold value, it is determined that the control information is sent; if the ratio is less than the threshold value, it is determined that the control information is not sent .
  • control information may include one of the following information: ACK/NACK message carried by the PUSCH in the LTE system Information, CQI information, RI information.
  • the index quantity of the ACK and the index quantity of the NACK can be respectively obtained, and the size of the two index quantities is first compared, and then the larger index quantity is compared with the threshold value, and finally Whether the ACK/NACK information is sent, that is, when the control information is the ACK/NACK information, determining whether the ACK/NACK information is sent may include:
  • the ACK index is less than the threshold, it is determined that the ACK/NACK information is not sent.
  • the index of the NACK is less than the threshold, it is determined that the ACK/NACK information is not transmitted.
  • control information modulation constellation point when calculating the index quantity of the ACK, is a modulation constellation point when the control information is ACK, and when calculating the index quantity of the NACK, the control information modulation constellation point is a modulation constellation point when the control information is NACK.
  • the equivalent signal-to-noise ratio when the symbols of the control information are determined to be repeated, the received detection symbols may be averaged first, and then the equivalent signal-to-noise ratio is constructed by constructing the constellation points with the control information.
  • the received detection symbols may be averaged first, and then the correlation values and distances are calculated by constructing the constellation points with the control information.
  • the numerator of the ratio tends to control the power of the information modulation constellation point, and the denominator tends to zero, then the ratio tends to infinity. If the control information is not carried, and the received data is random data or noise, then the numerator of the ratio tends to zero, and the denominator tends to control the power of the information modulation constellation point, then the ratio tends to zero. Similarly, comparing the ratio with a certain threshold to determine whether the control information is sent: if the ratio is greater than the threshold, then it is determined that the control information is sent; if the ratio is less than the threshold, then the determination is not sent. Control information.
  • the following describes the detection process of ACK/NACK information by taking the 1-bit ACK/NACK information of the PUSCH in the LTE system as an example. It should be noted that the detection of the PUSCH bearer greater than 1-bit ACK/NACK information in the LTE system, and the detection of the PUSCH-bearing CQI and RI information may be processed by using the extension scheme of the embodiment, and the core algorithm uses the above description. Algorithm.
  • a schematic diagram of a PUSCH carrying ACK/NACK information transmission process mainly includes the following processing:
  • the HARQ-ACK information coding and modulation will be occupied. Symbol.
  • the PUSCH encoded sequence is scrambled, so that Mbit is the total length of the PUSCH encoded sequence.
  • Mbit is the total length of the PUSCH encoded sequence.
  • the ACK/NACK information symbols will be modulated at the four corners of the most edge of the constellation point.
  • the ACK/NACK sequence is equal to and enters 2; 2) reconstructing the detection symbols of the ACK/NACK information according to the descrambled ACK/NACK sequence 3 ⁇ 4 ⁇ and the PUSCH modulation order Q M :
  • QPSK Quadrature Phase Shift Keying
  • 16QAM Quadrature Amplitude Modulation
  • D ⁇ ! 64QAM modulation
  • D 1/V42.
  • the amount of ACK indicator Real ⁇ S q - conj S ACK )
  • an embodiment of the present invention provides a device for detecting activation of a control information. Since the principle of solving the problem is similar to the method for detecting activation of the control information, the implementation of the device can refer to the implementation of the method. , the repetition will not be repeated.
  • FIG. 3 is a schematic structural diagram of a device for detecting activation of a control information, as shown in the figure, which may include:
  • the determining module 301 is configured to determine the detection symbol, and the detection symbol and the control information modulation constellation point; the determining module 302 is configured to determine, according to the detection symbol, the detection symbol and the control information modulation constellation point, whether the control information is carried.
  • the judging module may be further configured to construct an equivalent signal to noise ratio according to the detection symbol, and the detection symbol and the control information modulation constellation point when determining whether the control information is carried according to the detection symbol and the detection symbol and the control information modulation constellation point. And determine whether the control information is sent by the magnitude of the equivalent signal to noise ratio.
  • the determining module may be further configured to: when detecting the equivalent signal to noise ratio, the correlation number of the detected symbol and the control information modulation constellation point is a numerator, and the distance between the detected symbol and the control information modulation constellation point is a denominator.
  • the judging module can be further used to use the Euclidean distance as the distance between the detection symbol and the control information modulation constellation point.
  • the judging module may be further configured to: when determining the symbol of the control information is repeated when constructing the equivalent signal to noise ratio, first averaging the received detection symbols, and constructing an equivalent signal to noise ratio with the control information constructing the constellation points.
  • control information includes one of the following information: ACK/NACK information, CQI information, and RI information carried by the PUSCH in the LTE system.
  • the determining module may be further configured to: when the control information is ACK/NACK information, determine whether the ACK/NACK information is sent:
  • the ACK index is greater than the threshold, then it is determined that the ACK information is sent.
  • the ACK index is less than the threshold, it is determined that the ACK/NACK information is not sent.
  • the index of the NACK is greater than the threshold, then it is determined that the NACK information is sent.
  • the index of the NACK is less than the threshold, it is determined that the ACK/NACK information is not transmitted.
  • the technical solution provided by the embodiment of the present invention can perform activation detection on control information, in particular, ACK/NACK information.
  • the equivalent signal to noise ratio can be constructed, and whether the control information (such as ACK/NACK information) is sent by using the equivalent signal to noise ratio;
  • the SNR of the equivalent signal to noise ratio is a correlation value between the detection symbol and the control information construction symbol;
  • the denominator of the equivalent signal to noise ratio is the distance between the detection symbol and the control information construction symbol, and the distance can use the Euclidean distance;
  • the detected signal may be averaged and then the equivalent signal to noise ratio may be calculated;
  • This solution is applicable to the detection of control information, including but not limited to the following scenarios: Detection of ACK/NACK information, CQI information, and RI information carried by the PUSCH in the LTE system.
  • the technical solution provided by the embodiment of the present invention provides a new control information detection scheme, which can perform activation detection on the control information, and effectively reduce the virtual detection probability of the control information.
  • it is applied to the detection of the HARQ-ACK information carried on the PUSCH in the LTE system, which can effectively reduce the false detection probability of the ACK/NACK information, achieve the ACK false alarm and miss detection indicators proposed by the LTE RAN4, reduce the probability of PDSCH leakage transmission, and guarantee the service. Normal transmission of the channel.
  • embodiments of the present invention can be provided as a method, system, or computer program.
  • Product may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.
  • present invention is in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur un procédé et un dispositif d'activation et de détection d'informations de commande. Le procédé consiste à : déterminer un symbole de détection et un point de constellation de modulation de symbole de détection/d'informations de commande; et selon le symbole de détection et le point de constellation de modulation de symbole de détection et d'informations de commande, déterminer si les informations de commande sont ou non portées. La présente invention peut réduire efficacement la probabilité d'une fausse détection d'informations de commande.
PCT/CN2012/070986 2011-02-12 2012-02-09 Procédé et dispositif d'activation et de détection d'informations de commande Ceased WO2012106991A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011100371402A CN102142946B (zh) 2011-02-12 2011-02-12 一种控制信息激活检测的方法及设备
CN201110037140.2 2011-02-12

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WO2012106991A1 true WO2012106991A1 (fr) 2012-08-16

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102142946B (zh) * 2011-02-12 2013-12-11 电信科学技术研究院 一种控制信息激活检测的方法及设备
CN103378949B (zh) * 2012-04-13 2016-08-10 京信通信系统（中国）有限公司 一种应答信息检测方法以及装置
US9319185B2 (en) 2012-05-28 2016-04-19 Telefonaktiebolaget L M Ericsson (Publ) Method, arrangement and detector for detecting hybrid automatic repeat request acknowledgement information
CN104158620B (zh) * 2013-05-13 2019-03-12 中兴通讯股份有限公司 一种控制信息的传输方法及发送、接收装置
CN104168591B (zh) * 2013-05-16 2017-12-22 普天信息技术研究院有限公司 一种物理上行共享信道上不连续发送的检测方法和装置
CN109952726B (zh) * 2017-02-08 2021-10-29 上海朗帛通信技术有限公司 一种被用于无线通信的终端、基站中的方法和装置

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EP1596522A2 (fr) * 2004-05-14 2005-11-16 Fujitsu Limited Dispositif et procédé pour déterminer si des données transmises sont associées à une nouvelle transmission ou à une retransmission
CN101969368A (zh) * 2010-11-03 2011-02-09 北京北方烽火科技有限公司 一种应答信号检测方法及装置
CN102142946A (zh) * 2011-02-12 2011-08-03 电信科学技术研究院 一种控制信息激活检测的方法及设备

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Publication number Priority date Publication date Assignee Title
EP1596522A2 (fr) * 2004-05-14 2005-11-16 Fujitsu Limited Dispositif et procédé pour déterminer si des données transmises sont associées à une nouvelle transmission ou à une retransmission
CN101969368A (zh) * 2010-11-03 2011-02-09 北京北方烽火科技有限公司 一种应答信号检测方法及装置
CN102142946A (zh) * 2011-02-12 2011-08-03 电信科学技术研究院 一种控制信息激活检测的方法及设备

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CN102142946B (zh) 2013-12-11

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