WO2014101167A1 - Procédé et dispositif de détection - Google Patents

Procédé et dispositif de détection Download PDF

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Publication number
WO2014101167A1
WO2014101167A1 PCT/CN2012/087994 CN2012087994W WO2014101167A1 WO 2014101167 A1 WO2014101167 A1 WO 2014101167A1 CN 2012087994 W CN2012087994 W CN 2012087994W WO 2014101167 A1 WO2014101167 A1 WO 2014101167A1
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WO
WIPO (PCT)
Prior art keywords
time slot
slot
signal
interference ratio
symbols
Prior art date
Application number
PCT/CN2012/087994
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English (en)
Chinese (zh)
Inventor
胡峰
王宁
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201280002565.2A priority Critical patent/CN104137599B/zh
Priority to PCT/CN2012/087994 priority patent/WO2014101167A1/fr
Publication of WO2014101167A1 publication Critical patent/WO2014101167A1/fr

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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
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a detection method and apparatus. Background technique
  • the discontinuous transmission of the Dedicated Physical Control Channel is introduced in the Continuous Connectivity for Packet Data (CPC) to implement data transmission, non-transmission, and transmission.
  • the DPCCH always transmits data according to a predefined mode
  • the base station performs power control adjustment according to a predefined mode to ensure the stability and reliability of the communication system performance.
  • the user may initiate a service with a short time data such as web browsing during a period in which the CPC does not transmit data in a predefined mode, but in the prior art, it does not The data in the time slot during which the CPC does not transmit data is detected.
  • the base station does not know that there is data transmission, and thus real-time power control adjustment cannot be performed.
  • the reactive power regulation may adversely affect the stability and reliability of the communication system performance, resulting in degradation of the performance of the communication system and ultimately affecting the user's service experience. Therefore, how to detect data in a time slot during which a CPC does not transmit data has become an urgent problem to be solved in the art. Summary of the invention
  • the embodiment of the invention provides a detection method and device, which can detect data in a time slot during which the CPC does not transmit data, and ensure stability and reliability of the communication system.
  • a first aspect of the embodiments of the present invention provides a detection method, which may include:
  • the base station is notified that there is data transmission in the time slot.
  • calculating a signal to interference ratio of the time slot may include:
  • the maximum ratio combining process is performed on the symbols in the time slot to obtain the maximum ratio combined symbol, which can be obtained by the following formula
  • ⁇ is the maximum ratio of the combined symbols, which is the fading factor of the ith symbol on the first receiving path
  • x is the ith original signal sent by the transmitting end, which is the ith of the first receiving path.
  • the complex Gaussian white noise superimposed on the symbol is the intermediate frequency noise energy.
  • the average amplitude of the root symbol can be determined by the following formula
  • m is the average amplitude of the pilot symbols in the time slot
  • the maximum ratio is the combined symbol
  • N is the number of pilots used in the time slot.
  • the time slot information is calculated according to an average amplitude of the pilot symbols and an average noise energy in the time slot.
  • the dry ratio can be calculated by the following formula: Wherein, SIR is the signal to interference ratio of the time slot, and 2 is the average noise energy in the time slot.
  • determining whether the signal to interference ratio reaches a preset threshold includes: determining whether a signal to interference ratio of a current time slot reaches a preset threshold; or
  • the method may include:
  • the sequence number of the slot n is 3
  • the result of determining whether the signal-to-interference ratio of the nth slot reaches a preset threshold is determined.
  • the result is determined by coherently accumulating the average amplitude of the pilot symbol in the nth slot and the pilot symbol in the n-1th slot. Whether the ratio reaches a preset threshold;
  • the pilot symbol in the nth slot and the pilot symbol in the n-1th slot and the guide in the n-2th slot are determined. Whether the signal-to-interference ratio obtained by coherently accumulating the average amplitude of the three frequency symbols reaches a preset threshold;
  • the sequence number of the time slot is obtained by sequentially starting the time slot from 1 to 1, and n is an integer greater than or equal to 1.
  • a second aspect of the embodiments of the present invention provides a detecting apparatus, which may include:
  • a calculating unit configured to calculate a signal to interference ratio of the time slot
  • the determining unit is configured to determine whether the signal to interference ratio reaches a preset threshold; if yes, notify the base station that there is data transmission in the time slot.
  • the apparatus may further include:
  • a merging unit configured to perform maximum ratio combining processing on symbols in a time slot to obtain a maximum ratio combined symbol
  • the calculating unit is further configured to calculate an average amplitude of pilot symbols in the time slot according to the maximum ratio combined symbol and the number of pilots used in the time slot;
  • a signal to interference ratio of the time slot is calculated based on an average amplitude of the pilot symbols and an average noise energy within the time slot.
  • the merging unit performs a maximum ratio combining process on the symbols in the time slot to obtain a maximum ratio combined symbol, which may be as follows Formula calculation:
  • ⁇ is the maximum ratio of the merged symbols, which is the i-th symbol on the first receive path
  • x is the ith original signal sent by the transmitting end, and is the complex Gaussian white noise superimposed on the ith symbol on the first receiving path, which is the intermediate frequency noise energy.
  • the average amplitude of the pilot symbols in the time slot can be calculated by the following formula:
  • m is the average amplitude of the pilot symbols in the time slot
  • the maximum ratio is the combined symbol
  • N is the number of pilots used in the time slot.
  • the calculating unit calculates, according to an average amplitude of the pilot symbol and an average noise energy in the time slot,
  • the signal-to-interference ratio of the time slot can be calculated by the following formula:
  • the computing unit may also be used to The dry ratio is accumulated with the signal to interference ratio of at least the previous time slot;
  • the determining unit determines whether the signal to interference ratio reaches a preset threshold, and includes:
  • the method may include:
  • the sequence number of the slot n is 3
  • the result of determining whether the signal-to-interference ratio of the nth slot reaches a preset threshold is determined.
  • the sequence number of the slot n is 3, the result is 2, and the signal-to-interference ratio obtained by coherently accumulating the average amplitudes of the pilot symbols in the n-1th slot of the pilot symbol in the nth slot is determined. Whether the preset threshold is reached; If the sequence number n to 3 of the slot is 0, the pilot symbol in the nth slot and the pilot symbol in the n-1th slot and the guide in the n-2th slot are determined. Whether the signal-to-interference ratio obtained by coherently accumulating the average amplitude of the three frequency symbols reaches a preset threshold;
  • the sequence number of the time slot is obtained by sequentially starting the time slot from 1 to 1, and n is an integer greater than or equal to 1.
  • a third aspect of the embodiments of the present invention provides a detecting apparatus, which may include:
  • the memory is configured to store a program executed by the processor
  • the processor is configured to perform the following steps:
  • the base station is notified that there is data transmission in the time slot.
  • the processor is further configured to:
  • a signal to interference ratio of the time slot is calculated based on an average amplitude of the pilot symbols and an average noise energy within the time slot.
  • the processor performs a maximum ratio combining process on the symbols in the time slot to obtain a maximum ratio combined symbol, which may be as follows Formula calculation:
  • ⁇ is the maximum ratio of the combined symbols, and is the fading factor of the ith symbol on the first receiving path, where x is the ith original signal sent by the transmitting end, which is the ith of the first receiving path
  • the complex Gaussian white noise superimposed on the symbols is the intermediate frequency noise energy.
  • the processor calculates a pilot symbol in the time slot according to the maximum ratio combined symbol and the time interval Average amplitude, which can be calculated by the following formula
  • m is the average amplitude of the pilot symbols in the time slot
  • the maximum ratio is the combined symbol
  • N is the number of pilots used in the time slot.
  • the processor is configured to calculate, according to an average amplitude of the pilot symbols and an average noise energy in the time slot,
  • the signal-to-interference ratio of the time slot can be calculated by the following formula: Wherein, the SIR is a signal to interference ratio of the time slot, and is an average noise energy in the time slot.
  • the processor determines whether the signal to interference ratio reaches a pre Set the threshold, which can include:
  • the method may include:
  • the sequence number of the slot n is 3
  • the result of determining whether the signal-to-interference ratio of the nth slot reaches a preset threshold is determined.
  • the sequence number of the slot n is 3, the result is 2, and the signal-to-interference ratio obtained by coherently accumulating the average amplitudes of the pilot symbols in the n-1th slot of the pilot symbol in the nth slot is determined. Whether the preset threshold is reached;
  • the pilot symbol in the nth slot and the pilot symbol in the n-1th slot and the guide in the n-2th slot are determined. Whether the signal-to-interference ratio obtained by coherently accumulating the average amplitude of the three frequency symbols reaches a preset threshold;
  • the sequence number of the time slot is obtained by sequentially starting the time slot from 1 to 1, and n is an integer greater than or equal to 1.
  • Embodiments of the present invention have the following beneficial effects: By calculating the signal-to-interference ratio of the time slot in which the data is not transmitted in the discontinuous transmission of the uplink DPCCH in the CPC and comparing it with the preset threshold, it can be determined whether there is data transmission in the time slot, and the non-correlation detection method is solved.
  • the problem of poor stability and reliability of the communication system judging according to the correlation of the signal-to-interference ratio of the relevant time slots, the time can be completed when the amount of business data is particularly small and the service request time is extremely short.
  • the detection of the gap reduces the missed detection rate and improves the accuracy and accuracy of the detection.
  • FIG. 1 is a schematic flow chart of a first embodiment of a detecting method of the present invention
  • FIG. 2 is a schematic flow chart of a second embodiment of the detecting method of the present invention.
  • Figure 3 is a schematic view showing the composition of a first embodiment of the detecting device of the present invention.
  • Figure 4 is a schematic view showing the composition of a second embodiment of the detecting device of the present invention.
  • Figure 5 is a schematic view showing the composition of a third embodiment of the detecting device of the present invention. detailed description
  • FIG. 1 is a schematic flowchart of a first embodiment of a detection method according to the present invention.
  • the method includes the following steps:
  • the time slot is a time slot in which data is not transmitted in discontinuous transmission of the uplink DPCCH in the CPC.
  • step S102 Determine whether the signal to interference ratio reaches a preset threshold. If yes, go to step S103, otherwise go to step S104.
  • a threshold may be set in advance, when the signal to interference ratio is higher than the threshold, then Indicates that there is data transmission in the time slot.
  • the base station After receiving the information, the base station can perform corresponding data volume statistics, perform corresponding power control and interference cancellation operations, and ensure the stability and reliability of the entire communication system.
  • the base station since there is no data transmission at this time, there is no impact on the entire communication system, so the base station may not be notified, and the base station may perform power control adjustment according to the original predefined mode.
  • the blank of the existing scheme is improved, and the data in the time slot during which the CPC does not transmit data can be detected, and the communication system is ensured. Stability and reliability.
  • FIG. 2 is a schematic flowchart of a second embodiment of a detection method according to the present invention.
  • the method includes the following steps:
  • the time slot is a time slot in which data is not transmitted in discontinuous transmission of the uplink DPCCH in the CPC.
  • the maximum ratio combining process is performed on the symbols in the time slot to obtain the maximum ratio of the combined symbols, which can be calculated by the following formula:
  • ⁇ is the maximum ratio of the combined symbols
  • 3 ⁇ 4 is the fading factor of the ith symbol on the first receiving path
  • ⁇ is the ith original signal sent by the transmitting end, which is the first receiving
  • the complex Gaussian white noise superimposed on the i-th symbol on the path is the intermediate frequency noise energy.
  • the i-th symbol 3 ⁇ ⁇ + "/ ⁇ on the first receiving path is a complex Gaussian white noise with a mean value of 0 and a variance of 2 , where ⁇ is equal to 1.
  • the maximum ratio combining is performed to receive better signal quality.
  • the average amplitude of the pilot symbols within the time slot is the average amplitude of the pilot symbols within the time slot.
  • m is the average amplitude of the pilot symbols in the time slot
  • the maximum ratio is the combined symbol
  • N is the number of pilots used in the time slot.
  • S203 Calculate a signal to interference ratio of the time slot according to an average amplitude of the pilot symbols and an average noise energy in the time slot.
  • the SIR is a signal to interference ratio of the time slot, and is an average noise energy in the time slot ( specifically, the average noise energy 2 in the time slot is:
  • determining whether the signal to interference ratio reaches a preset threshold includes:
  • the sequence number of the slot n is 3
  • the result of determining whether the signal-to-interference ratio of the nth slot reaches a preset threshold is determined.
  • the result is determined by coherently accumulating the average amplitude of the pilot symbol in the nth slot and the pilot symbol in the n-1th slot. Whether the preset is reached Threshold value
  • the pilot symbol in the nth slot and the pilot symbol in the n-1th slot and the guide in the n-2th slot are determined. Whether the signal-to-interference ratio obtained by coherently accumulating the average amplitude of the three frequency symbols reaches a preset threshold;
  • the sequence number of the time slot is obtained by sequentially starting the time slot from 1 to 1, and n is an integer greater than or equal to 1.
  • the pilot symbol in the nth slot and the pilot symbol in the n-1th slot and the pilot in the n-2th slot are determined. Whether the signal-to-interference ratio obtained by coherently accumulating the average amplitude of the three frequency symbols reaches a preset threshold;
  • the calculation method of coherently accumulating the average amplitudes of the pilot symbols in the three slots is similar to the above-mentioned calculation method of coherently accumulating the average amplitudes of the pilot symbols in the two slots, and will not be described again.
  • a method for judging the signal-to-interference ratio accumulation result according to the relevant time slot is given, and the time slot can still be completed in the case where the service data amount is particularly small and the service request time is particularly short.
  • the detection reduces the missed detection rate and improves the accuracy and accuracy of the detection.
  • FIG. 3 it is a schematic diagram of a composition of a first embodiment of a detecting apparatus according to the present invention.
  • the apparatus includes: a calculating unit 100 and a determining unit 200.
  • the calculating unit 100 is configured to calculate a signal to interference ratio of a time slot
  • the determining unit 200 is configured to determine whether the signal to interference ratio reaches a preset threshold; if yes, notify the base station that there is data transmission in the time slot.
  • the apparatus includes: a calculation unit 100, a determination unit 200, and a merging unit 300.
  • the merging unit 300 is configured to perform maximum ratio combining processing on symbols in a time slot to obtain a maximum ratio of the combined symbols;
  • the calculating unit 100 is further configured to calculate, according to the maximum ratio combined symbol and the pilot number used in the time slot, an average amplitude of pilot symbols in the time slot;
  • a signal to interference ratio of the time slot is calculated based on an average amplitude of the pilot symbols and an average noise energy within the time slot.
  • the merging unit 300 performs maximum ratio combining processing on the symbols in the time slot to obtain a maximum ratio combined symbol, which is calculated by the following formula:
  • ⁇ is the maximum ratio of the combined symbols
  • 3 ⁇ 4 is the fading factor of the ith symbol on the first receiving path
  • ⁇ is the ith original signal sent by the transmitting end, which is the first receiving
  • the complex Gaussian white noise superimposed on the i-th symbol on the path is the intermediate frequency noise energy.
  • the calculating unit 100 is configured according to the combined symbol of the maximum ratio and the pilot used in the time slot.
  • m is the average amplitude of the pilot symbols in the time slot
  • the maximum ratio is the combined symbol
  • N is the number of pilots used in the time slot.
  • the calculating unit 100 calculates a signal to interference ratio of the time slot according to an average amplitude of the pilot symbols and an average noise energy in the time slot, and is calculated by the following formula: Wherein, the SIR is a signal to interference ratio of the time slot, and is an average noise energy in the time slot.
  • the calculating unit 100 is further configured to accumulate a signal to interference ratio of a current time slot and a signal to interference ratio of at least a previous time slot;
  • the determining unit 200 determines whether the signal to interference ratio reaches a preset threshold, and includes:
  • the sequence number of the slot n is 3
  • the result of determining whether the signal-to-interference ratio of the nth slot reaches a preset threshold is determined.
  • the result is determined by coherently accumulating the average amplitude of the pilot symbol in the nth slot and the pilot symbol in the n-1th slot. Whether the ratio reaches a preset threshold;
  • the pilot symbol in the nth slot and the pilot symbol in the n-1th slot and the guide in the n-2th slot are determined. Whether the signal-to-interference ratio obtained by coherently accumulating the average amplitude of the three frequency symbols reaches a preset threshold;
  • the sequence number of the time slot is obtained by sequentially starting the time slot from 1 to 1, and n is an integer greater than or equal to 1.
  • the device includes: a processor 400 and a memory 500 cooperating with the processor 400;
  • the memory 500 is configured to store a program executed by the processor 400;
  • the processor 400 is configured to perform the following steps:
  • the base station is notified that there is data transmission in the time slot.
  • the processor 400 is further configured to:
  • a signal to interference ratio of the time slot is calculated based on an average amplitude of the pilot symbols and an average noise energy within the time slot.
  • the processor 400 performs maximum ratio combining processing on the symbols in the time slot to obtain a maximum ratio combined symbol, which is calculated by the following formula:
  • ⁇ is the maximum ratio of the combined symbols
  • . is the fading factor of the ith symbol on the first receiving path
  • ⁇ is the ith original signal sent by the transmitting end
  • the complex Gaussian white noise superimposed on the i-th symbol on the path is the intermediate frequency noise energy.
  • the processor 400 calculates an average formula of the pilot symbols in the time slot according to the maximum ratio combined symbol and the number of pilots used in the time slot:
  • m is the average amplitude of the pilot symbols in the time slot
  • the maximum ratio is the combined symbol
  • N is the number of pilots used in the time slot.
  • the processor 400 calculates a signal to interference ratio of the time slot according to an average amplitude of the pilot symbols and an average noise energy in the time slot, and is calculated by the following formula:
  • SIR is the signal to interference ratio of the time slot
  • 2 is the average noise energy in the time slot
  • the processor 400 determines whether the signal to interference ratio reaches a preset threshold, and includes:
  • the sequence number of the slot n is 3
  • the result of determining whether the signal-to-interference ratio of the nth slot reaches a preset threshold is determined.
  • the pilot symbol in the nth slot is determined. Whether the signal-to-interference ratio obtained by coherently summing the average amplitudes of the pilot symbols in n-1 time slots reaches a preset threshold;
  • the pilot symbol in the nth slot and the pilot symbol in the n-1th slot and the guide in the n-2th slot are determined. Whether the signal-to-interference ratio obtained by coherently accumulating the average amplitude of the three frequency symbols reaches a preset threshold;
  • the sequence number of the time slot is obtained by sequentially starting the time slot from 1 to 1, and n is an integer greater than or equal to 1.
  • the present invention has the following advantages:
  • the signal-to-interference ratio of the time slot in which the data is not transmitted in the discontinuous transmission of the uplink DPCCH in the CPC By calculating the signal-to-interference ratio of the time slot in which the data is not transmitted in the discontinuous transmission of the uplink DPCCH in the CPC and comparing it with the preset threshold, it can be determined whether there is data transmission in the time slot, and the non-correlation detection method is solved.
  • the problem of poor stability and reliability of the communication system; judging according to the correlation of the signal-to-interference ratio of the relevant time slots, the time can be completed when the amount of business data is particularly small and the service request time is extremely short.
  • the detection of the gap reduces the missed detection rate and improves the accuracy and accuracy of the detection.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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

Abstract

L'invention concerne un procédé de détection, comprenant : le calcul d'un rapport signal sur interférence d'un créneau temporel ; le jugement du fait de savoir si le rapport signal sur interférence atteint une valeur de seuil prédéterminée ou non ; et dans l'affirmative, l'avertissement à une station de base du fait qu'il existe des données à envoyer dans le créneau temporel. L'invention concerne en outre un dispositif de détection. En utilisant la présente invention, des données de CPC dans le créneau temporel dans lequel aucune donnée n'est envoyée sont détectées, garantissant ainsi la stabilité et la fiabilité d'un système de communication.
PCT/CN2012/087994 2012-12-31 2012-12-31 Procédé et dispositif de détection WO2014101167A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201280002565.2A CN104137599B (zh) 2012-12-31 2012-12-31 一种检测方法及装置
PCT/CN2012/087994 WO2014101167A1 (fr) 2012-12-31 2012-12-31 Procédé et dispositif de détection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2012/087994 WO2014101167A1 (fr) 2012-12-31 2012-12-31 Procédé et dispositif de détection

Publications (1)

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WO2014101167A1 true WO2014101167A1 (fr) 2014-07-03

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Citations (3)

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CN101128002A (zh) * 2006-08-17 2008-02-20 华为技术有限公司 一种实现无线链路同失步检测的方法
CN101136666A (zh) * 2006-08-28 2008-03-05 华为技术有限公司 实现发射功率控制的方法及装置
CN101611627A (zh) * 2007-01-12 2009-12-23 汤姆逊许可证公司 用于在低信噪比下感测atsc信号的装置和方法

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CN101374038B (zh) * 2007-08-20 2012-09-26 中兴通讯股份有限公司 Ofdm系统中基于harq技术的信号重传方法
CN101938837B (zh) * 2009-06-30 2013-03-20 华为技术有限公司 小区间干扰抑制方法、装置
CN101790204B (zh) * 2010-02-01 2012-08-15 北京邮电大学 协作通信系统中兼顾信道条件和业务状态的中继选择方法
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CN101128002A (zh) * 2006-08-17 2008-02-20 华为技术有限公司 一种实现无线链路同失步检测的方法
CN101136666A (zh) * 2006-08-28 2008-03-05 华为技术有限公司 实现发射功率控制的方法及装置
CN101611627A (zh) * 2007-01-12 2009-12-23 汤姆逊许可证公司 用于在低信噪比下感测atsc信号的装置和方法

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