WO2023082836A1 - 信道状态确定方法、装置和机器可读存储介质 - Google Patents

信道状态确定方法、装置和机器可读存储介质 Download PDF

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Publication number
WO2023082836A1
WO2023082836A1 PCT/CN2022/119354 CN2022119354W WO2023082836A1 WO 2023082836 A1 WO2023082836 A1 WO 2023082836A1 CN 2022119354 W CN2022119354 W CN 2022119354W WO 2023082836 A1 WO2023082836 A1 WO 2023082836A1
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Prior art keywords
detection
received signal
response
channel state
low
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PCT/CN2022/119354
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English (en)
French (fr)
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赵东艳
王于波
李德建
陈家国
张晓燚
马岩
张喆
冯曦
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北京智芯微电子科技有限公司
国网信息通信产业集团有限公司
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Publication of WO2023082836A1 publication Critical patent/WO2023082836A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

Definitions

  • the present invention relates to the technical field of communications, and in particular to a channel state determination method, device and machine-readable storage medium.
  • RFID Radio Frequency Identification
  • the existing channel status can be detected in the following ways: when the reader receives the return information from the electronic tag, it detects whether the frame header data of the returned data is damaged, detects whether the data segment of the returned information violates the FM0 encoding rule, and detects whether the read Whether the writer receives any information from the electronic tag within the time T1max stipulated in the agreement. It detects the possibility of collision at three levels, which can improve the accuracy of collision detection. However, this method does not distinguish the status of whether the tag returns data, and is only suitable for the collision detection of the FM0 code pattern, and due to the sensitivity of the electronic tag, it is possible to misjudge the collision.
  • the purpose of the embodiment of the present invention is to provide a channel state determination method, device and machine-readable storage medium, the channel state determination method, device and machine-readable storage medium can make reliable and accurate channel state distinction for signals of different coding types , to reduce repeated invalid command sending.
  • an embodiment of the present invention provides a method for determining a channel state, the method comprising: receiving a signal at a preset sampling frequency; performing channel state detection with a low probability of false alarm on the received signal to obtain at least one low false alarm state Responding and performing channel state detection with low false alarm probability to obtain at least one low false alarm state response; determining the channel state according to the at least one low false alarm state response and the at least one low false alarm state response.
  • performing channel state detection with a low probability of false alarm on the received signal to obtain at least one low false alarm state response includes: performing at least one of guided tone waveform matching detection and frame header matching detection, so as to obtain at least one low false alarm state response according to As a result of the detection, the at least one low-alarm state response is obtained.
  • performing guided tone waveform matching detection on the received signal, and obtaining the at least one low-leakage alarm state response according to the detection result includes: acquiring the guided tone part of the received signal; in the guided tone part of the received signal , when 0 and 1 do not appear periodically within a preset number of periods, a second status response is obtained.
  • performing frame header matching detection on the received signal and obtaining the at least one low-alarm state response according to the detection result includes: obtaining a third state response when the frame header of the received signal does not appear.
  • performing channel state detection with low false alarm probability on the received signal to obtain at least one low false alarm state response includes: performing signal validity detection and guided tone waveform matching detection on the received signal, according to the detection result The at least one low false alarm state response is obtained.
  • performing signal validity detection and guided tone waveform matching detection on the received signal, obtaining the at least one low false alarm state response according to the detection result includes: calculating the power of the received signal; The signal powers of the consecutive sampling points are all greater than or equal to the second detection threshold, and in the pilot tone part of the received signal, 0 and 1 appear periodically within the preset number of cycles, and at the subsequent preset time A sixth state response is obtained when the signal powers of the third number of consecutive sampling points that do not appear are all less than the second detection threshold.
  • performing signal validity detection and pilot tone waveform matching detection on the received signal, so as to obtain the at least one low false alarm state response according to the detection result includes: calculating the power of the received signal; The signal power of a number of consecutive sampling points is greater than or equal to the second detection threshold, and in the lead tone part of the received signal, 0 and 1 appear periodically within the preset number of cycles, but in the subsequent preset A seventh state response is obtained when the signal powers of a third number of consecutive sampling points within a time period are all less than the second detection threshold.
  • performing signal validity detection and guided tone waveform matching detection on the received signal includes: calculating the power of the received signal; When the signal powers of the number of consecutive sampling points are greater than or equal to the second detection threshold, a seventh state response is obtained.
  • performing signal validity detection and pilot tone waveform matching detection on the received signal, so as to obtain the at least one low false alarm state response according to the detection result includes: calculating the power of the received signal; When the signal power of the number of consecutive sampling points is greater than or equal to the second detection threshold, and in the leading tone part of the received signal, when 0 and 1 do not appear periodically in the preset number of cycles, the seventh status response.
  • determining the channel state according to the at least one low-alarm state response and the at least one low-false-alarm state response includes: 0 within a preset number of cycles in the pilot tone portion of the received signal
  • the channel status is determined to be a collision.
  • determining the channel state according to the at least one low-alarm state response and the at least one low-false-alarm state response includes: 0 within a preset number of cycles in the pilot tone portion of the received signal When the sum 1 does not appear periodically to obtain the second status response or the frame header of the received signal does not appear to obtain the third status response and the seventh status response is obtained, determine that the channel status is no response.
  • An embodiment of the present invention also provides a method for determining a channel state, the method comprising: receiving a signal at a preset sampling frequency; performing a channel state detection with a low probability of a false alarm on the received signal to obtain at least one low false alarm state response; according to The at least one low-alarm state is responsive to determining the channel state.
  • performing channel state detection with a low probability of false alarm on the received signal to obtain at least one low false alarm state response includes: performing at least one of signal presence detection and collision detection on the received signal, The at least one low-leakage alarm state response is obtained according to the detection result.
  • detecting the presence or absence of a signal on the received signal, and obtaining the at least one low-leakage alarm state response according to the detection result includes: calculating the power of the received signal; When both are greater than or equal to the first detection threshold, the first state response is obtained.
  • performing collision detection on the received signal, and obtaining the at least one low-leakage alarm state response according to the detection result includes: during demodulation, detecting the collision of the received signal; when the received signal meets the collision condition, A fourth state response is obtained; when the received signal does not meet the collision condition, a fifth state response is obtained.
  • determining the channel state according to the at least one low-alarm state response includes: determining that the channel state is no response when the first state response is obtained.
  • determining the channel state according to the at least one low-alarm state response includes: determining that the channel state is collision when obtaining the fourth state response; and determining the channel state as a collision when obtaining the fifth state response, Determining that the channel status is responsive.
  • An embodiment of the present invention also provides a device for determining a channel state, the device comprising: a first receiving unit, a first detecting unit, and a first determining unit, wherein the first receiving unit is configured to receive signals at a preset sampling frequency; The first detection unit is used to perform channel state detection with low false alarm probability on the received signal to obtain at least one low false alarm state response and perform channel state detection with low false alarm probability to obtain at least one low false alarm state response State response: the first determining unit is configured to determine the channel state according to the at least one low false alarm state response and the at least one low false alarm state response.
  • the first detection unit is configured to: perform at least one of a guided tone waveform matching detection and a frame header matching detection on the received signal, so as to obtain the at least one low-leakage alarm state response according to the detection result.
  • the first detection unit is configured to: perform guided tone waveform matching detection on the received signal, so as to obtain the at least one low-leakage alarm state response according to the detection result includes: acquiring the guided tone part of the received signal; The second state response is obtained when 0 and 1 do not appear periodically within a preset number of periods in the lead tone portion of the received signal.
  • the first detection unit is configured to: perform frame header matching detection, so as to obtain the at least one low-leakage alarm state response according to the detection result includes: when the frame header of the received signal does not appear, obtain the third state response.
  • the first detection unit is configured to: perform signal validity detection and guided tone waveform matching detection on the received signal, so as to obtain the at least one low false alarm state response according to the detection results.
  • the first detection unit is used to: calculate the power of the received signal; when the signal power of the second number of consecutive sampling points is greater than or equal to the second detection threshold, and in the guided tone part of the received signal , when 0 and 1 appear periodically within the preset number of cycles, and the signal power of the third number of continuous sampling points does not appear in the subsequent preset time and is less than the second detection threshold, the sixth state is obtained response.
  • the first detection unit is configured to: calculate the power of the received signal when the signal power of a second number of consecutive sampling points is greater than or equal to the second detection threshold, and in the pilot tone part of the received signal , when 0 and 1 appear periodically within the preset number of cycles, but the signal power of the third number of continuous sampling points within the subsequent preset time is less than the second detection threshold, the seventh state is obtained response.
  • the first detection unit is configured to: calculate the power of the received signal; when the signal power of the second number of consecutive sampling points is not greater than or equal to the second detection threshold, obtain the seventh state response .
  • the first detection unit is configured to: calculate the power of the received signal; when the signal power of a second number of consecutive sampling points is greater than or equal to the second detection threshold, and the received signal In the leading tone part of , when 0 and 1 do not appear periodically within the preset number of periods, the seventh state response is obtained.
  • the first determination unit is configured to: in the lead tone part of the received signal, 0 and 1 do not appear periodically within a preset number of periods to obtain a second state response or within a frame of the received signal
  • the channel status is determined to be a collision.
  • the first determination unit is configured to: in the lead tone part of the received signal, 0 and 1 do not appear periodically within a preset number of periods to obtain a second state response or within a frame of the received signal The header does not appear to obtain the third status response, and when the seventh status response is obtained, determine that the channel status is no response.
  • An embodiment of the present invention also provides a device for determining a channel state, which includes: a second receiving unit, a second detecting unit, and a second determining unit, wherein the second receiving unit is used to receive signals at a preset sampling frequency ; The second detection unit is used to detect the channel state of the received signal with a low probability of false alarm, so as to obtain at least one low false alarm status response; A status response, determining the channel status.
  • the second detection unit is configured to: perform at least one of signal presence detection and collision detection, so as to obtain the at least one low-leakage alarm state response according to the detection result.
  • the second detection unit is configured to: calculate the power of the received signal; and obtain a first state response when no signal power of the first number of consecutive sampling points is greater than or equal to the first detection threshold.
  • the second detection unit is configured to: detect a collision of the received signal during demodulation; obtain a fourth state response when the received signal meets the collision condition; and obtain a fourth state response when the received signal does not meet the collision condition , get the fifth status response.
  • the second determination unit is configured to: determine that the channel state is no response when the first state response is obtained.
  • the second determination unit is configured to: determine that the channel state is a collision when the fourth state response is obtained; determine that the channel state is responsive when the fifth state response is obtained.
  • An embodiment of the present invention also provides a machine-readable storage medium, on which a program is stored, and when the program is executed, the method for determining the channel state described above is implemented.
  • the combination of the channel state detection with low probability of false alarm and the channel state detection with low probability of false alarm is beneficial to Make an accurate judgment on the channel state. Moreover, it can reliably and accurately distinguish the channel state for signals of various encoding types, reduce repeated and invalid command transmission, and facilitate the reader to efficiently inventory the electronic tags.
  • FIG. 1 is a flow chart of a method for determining a channel state provided by an embodiment of the present invention
  • Fig. 2 is a flow chart of channel state detection with low probability of false alarm provided by an embodiment of the present invention
  • 3 is a flow chart of channel state detection with low false alarm probability provided by an embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for determining a channel state provided by another embodiment of the present invention.
  • Fig. 5 is a schematic diagram of channel state judgment provided by an embodiment of the present invention.
  • FIG. 6 is a structural block diagram of an apparatus for determining a channel state provided by an embodiment of the present invention.
  • Fig. 7 is a structural block diagram of an apparatus for determining a channel state provided by another embodiment of the present invention.
  • Fig. 1 is a flowchart of a method for determining a channel state provided by an embodiment of the present invention. As shown in Figure 1, the method includes:
  • Step S101 receiving a signal with a preset sampling frequency
  • tag signals can be received.
  • the received tag signal may be a zero-IF analog signal collected at the receiving end.
  • Step S102 performing channel state detection with low false alarm probability on the received signal to obtain at least one low false alarm state response and performing channel state detection with low false alarm probability to obtain at least one low false alarm state response;
  • a missed alarm means that within the detection range, due to the presence of noise, a signal is misjudged as no signal;
  • a false alarm means that because the noise always exists objectively, when the amplitude of the noise signal exceeds the detection threshold, the radar ( or other detection systems) will be mistaken for the discovery target.
  • Low probability of false alarm means high probability of false alarm, that is, high probability of false detection, but low probability of missing effective signal; and low probability of false alarm means high probability of false alarm, that is, high probability of missing effective signal The probability is low.
  • the channel state detection with low probability of false alarm refers to: using the channel state detection method, it can ensure that the probability of missing valid signals in the detection process is low (low false alarm); and the channel state detection with low false alarm probability refers to : By using the channel state detection method, it can be ensured that the false detection probability in the detection process is low (low false alarm).
  • the so-called low probability of false alarm or low probability of false alarm can be understood as the relative comparison between channel state detection with low probability of false alarm and channel state detection with low probability of false alarm. State detection, channel state detection with low probability of false alarm has a low probability of false alarm; compared with channel state detection with low probability of false alarm, channel state detection with low probability of false alarm has a low probability of false alarm.
  • the embodiment of the present invention does not limit the degree of low probability of missing alarm or low probability of false alarm.
  • the following figure 2 provides a channel state detection with a low probability of missing alarm, that is, the detection of signal presence, the matching detection of the guided sound waveform, the matching detection of the frame header and the collision detection are performed in sequence, so as to obtain the at least one low missing alarm according to the detection result status response.
  • the detection process and method are only preferred examples, and are not limited to the detection process and method used in the present invention. Those skilled in the art can make some reasonable adjustments, for example, only one, two or three of signal presence detection, guided sound waveform matching detection, frame header matching detection and collision detection can be used, and other low-level The detection method of the probability of missing alarm will not be repeated here.
  • the method includes:
  • Step S201 calculating the power of the received signal
  • Step S202 judging whether the signal power of the first number of consecutive sampling points is greater than or equal to the first detection threshold
  • the first detection threshold can be set relatively small, so that more signals are received.
  • the first detection threshold can be set in advance, and can also be obtained by the following method: after the command is sent to the tag, the RFID reader switches from the transmitting state to the receiving state, and the noise power is counted when the effective tag signal does not arrive. The result of noise power statistics is multiplied by corresponding coefficients to generate a first detection threshold. By judging whether the signal powers of the first number of consecutive sampling points are all greater than or equal to the first detection threshold, the presence or absence of the signal can be detected.
  • Step S203 when the signal power of the first number of consecutive sampling points is not greater than or equal to the first detection threshold, a first state response is obtained;
  • the signal does not exist at this time, and the first status response is directly given without continuing to the subsequent steps.
  • Step S204 when the signal power of the first number of consecutive sampling points is greater than or equal to the first detection threshold, acquire the guided tone part of the received signal;
  • a signal may be assumed to be present at this point and the received signal subsequently analyzed.
  • the preamble part of the signal can be divided into a guided tone part and a frame header part.
  • the guided tone part is obtained first to analyze the guided tone part, and conduct the guided tone waveform matching detection.
  • the guided sound waveform matching detection is to further detect the state of the signal existence after the above-mentioned signal presence or absence detection operation, and improve the success rate of signal detection.
  • Step S205 judging whether 0 and 1 appear periodically within a preset number of cycles in the leading tone part of the received signal
  • the preset number of values may be related to a preset sampling frequency of the received signal.
  • Step S206 when 0 and 1 do not appear periodically within the preset number of periods in the leading tone part of the received signal, a second state response is obtained;
  • the second status response is directly given at this time, and the subsequent steps are not continued.
  • Step S207 in the leading tone part of the received signal, when 0 and 1 appear periodically within the preset number of periods, determine whether the frame header of the received signal appears;
  • Frame header matching can extract valid data for subsequent collision detection. Determine whether the frame header matches by judging whether the frame header appears.
  • Step S208 when the frame header of the received signal does not appear, obtain a third status response
  • the third state response is directly given at this time, and the subsequent steps are not continued.
  • Step S209 when the frame header of the received signal appears, during demodulation, detect the collision of the received signal
  • Step S210 judging whether the received signal meets the collision condition
  • a collision condition can be understood as a duration of occurrence of 0 or 1 that exceeds the normal duration due to the superposition of responses.
  • the normal duration can be set to 1.25 times the period time of a symbol. That is to say, if it is found that the duration of occurrence of 0 or 1 exceeds 1.25 times of a symbol period, it can be considered that the collision condition is met.
  • Step S211 when the received signal meets the collision condition, a fourth state response is obtained
  • Step S212 when the received signal does not meet the collision condition, a fifth state response is obtained.
  • FIG. 3 provides a channel state detection with low false alarm probability, that is, the signal validity detection and the guided tone waveform matching detection are performed in sequence, so as to obtain the at least one low false alarm state response according to the detection results.
  • the detection process and method are only examples, and are not limited to the detection process and method used in the present invention. Those skilled in the art may also use other detection methods with low false alarm probability, or make some reasonable adjustments therein.
  • the method includes:
  • Step S301 calculating the power of the received signal
  • Step S302 judging whether the signal power of a second number of consecutive sampling points is greater than or equal to the second detection threshold
  • the second detection threshold can be set relatively large and greater than the first detection threshold, so that all valid signals are received as much as possible .
  • the second detection threshold can be set in advance, and can also be obtained by the following method: after the command is sent to the tag, the RFID reader switches from the transmitting state to the receiving state, and when the effective tag signal does not arrive, the noise power is counted. The result of the noise power statistics is multiplied by the corresponding coefficient to generate the second detection threshold.
  • Signal validity detection can be performed by judging whether the signal power of the second number of consecutive sampling points is greater than or equal to the second detection threshold.
  • Step S303 when the signal power of the second number of continuous sampling points does not appear to be greater than or equal to the second detection threshold, a seventh state response is obtained;
  • Step S304 when the signal power of the second number of consecutive sampling points is greater than or equal to the second detection threshold, it is judged that in the guided tone part of the received signal, within the preset number of periods, 0 Whether and 1 appear periodically;
  • the preset number of values may also be related to the preset sampling frequency of the received signal.
  • Step S305 obtaining the seventh state response when 0 and 1 do not appear periodically within the preset number of periods in the leading tone part of the received signal;
  • the seventh state response is directly given at this time, and the subsequent steps are not continued.
  • Step S306 in the leading tone part of the received signal, when 0 and 1 appear periodically within the preset number of cycles, it is judged whether the signal power of the third number of continuous sampling points appears in the subsequent preset time are less than the second detection threshold;
  • the preset time may be 1.25 times of one symbol period.
  • Step S307 when the signal power of the third number of consecutive sampling points is not less than the second detection threshold within the subsequent preset time, a sixth state response is obtained;
  • Step S308 when the signal powers of the third number of consecutive sampling points are all less than the second detection threshold within the subsequent preset time, a seventh state response is obtained.
  • different sixth state responses and seventh state responses are respectively given according to whether the signal powers of the third number of consecutive sampling points are all less than the second detection threshold.
  • step S103 After obtaining at least one low false alarm state response and at least one low false alarm state response in step S102, continue to step S103:
  • Step S103 determining the channel state according to the at least one low false alarm state response and the at least one low false alarm state response.
  • the channel state is a collision
  • the second state response or the third state response is obtained Response
  • the seventh state response determines that the channel state is no response.
  • Fig. 4 is a flowchart of a method for determining a channel state provided by another embodiment of the present invention. As shown in Figure 4, the method includes:
  • Step S401 receiving a signal with a preset sampling frequency
  • Step S402 performing channel state detection with low probability of false alarm on the received signal to obtain at least one low false alarm state response
  • Step S403 Determine the channel state according to the at least one low-alarm state response.
  • step S401-S402 when the first state response is obtained, determine that the channel state is no response; when the fourth state response is obtained, determine that the channel state is collision; when the fifth state response is obtained, Determining that the channel status is responsive.
  • a low-leakage alarm state response can be obtained by performing channel state detection with a low probability of false alarm, that is, a low-leakage state response includes a first state response, a second state response, a third state response, a fourth state response and/or a fifth state response , performing channel state detection with a low false alarm probability can obtain a low false alarm state response, that is, the low alarm state response includes the sixth state response and/or the seventh state response.
  • At least one low leakage alarm state response or obtaining at least one low leakage alarm state response and at least one low false alarm state response, at least one low leakage alarm state response, or at least one low leakage alarm state response and at least one Low false alarm status response to determine channel status.
  • channel processing can also be performed after receiving the signal and before performing channel state detection with low false alarm probability and low false alarm probability channel state detection.
  • the input complex signal is rotated through the phase, so that the signal energy is concentrated on the real part.
  • Fig. 6 is a structural block diagram of an apparatus for determining a channel state provided by an embodiment of the present invention.
  • the device includes: a first receiving unit 1, a first detecting unit 2, and a first determining unit 3, wherein the first receiving unit 1 is used to receive signals at a preset sampling frequency;
  • a detection unit 2 is used to perform channel state detection with low false alarm probability on the received signal to obtain at least one low false alarm state response, and/or perform channel state detection with low false alarm probability to obtain at least one low false alarm state response.
  • An alarm state response; the first determining unit 3 is configured to determine the channel state according to the at least one low false alarm state response and/or the at least one low false alarm state response.
  • the first detection unit 2 is configured to: perform at least one of guided tone waveform matching detection and frame header matching detection on the received signal, so as to obtain the at least one low-leakage alarm state response according to the detection result.
  • the first detection unit 2 is configured to: conduct tone waveform matching detection on the received signal, so as to obtain the at least one low-leakage alarm state response according to the detection result includes: obtaining the tone-guided part of the received signal ; In the leading tone part of the received signal, when 0 and 1 do not appear periodically within a preset number of cycles, a second status response is obtained.
  • the first detection unit 2 is configured to: perform frame header matching detection on the received signal, so as to obtain the at least one low-leakage alarm state response according to the detection result, including: , get the third status response.
  • the first detection unit 2 is configured to: perform signal validity detection and guided tone waveform matching detection on the received signal, so as to obtain the at least one low false alarm state response according to the detection results.
  • the first detection unit 2 is configured to: calculate the power of the received signal; when the signal power of the second number of consecutive sampling points is greater than or equal to the second detection threshold, and when the received signal is derived In the tone part, when 0 and 1 appear periodically within the preset number of cycles, and the signal power of the third number of continuous sampling points does not appear in the subsequent preset time and is less than the second detection threshold, it is obtained Sixth status response.
  • the first detection unit 2 is configured to: calculate the power of the received signal when the signal power of the second number of consecutive sampling points is greater than or equal to the second detection threshold, and the power of the received signal In the leading tone part, 0 and 1 appear periodically within the preset number of cycles, but when the signal power of a third number of continuous sampling points in the subsequent preset time is less than the second detection threshold, it is obtained Seventh status response.
  • the first detection unit 2 is configured to: calculate the power of the received signal; when the signal power of the second number of consecutive sampling points is not greater than or equal to the second detection threshold, the seventh state is obtained response.
  • the first detection unit 2 is configured to: calculate the power of the received signal; when the signal power of a second number of consecutive sampling points is greater than or equal to the second detection threshold, and the received signal In the leading tone part of the signal, when 0 and 1 do not appear periodically within the preset number of periods, the seventh state response is obtained.
  • the first determination unit 3 is configured to: in the leading tone part of the received signal, 0 and 1 do not appear periodically within a preset number of periods to obtain the second state response or in the received signal The frame header does not appear to obtain the third status response, and when the sixth status response is obtained, the channel status is determined to be a collision.
  • the first determination unit 3 is configured to: in the leading tone part of the received signal, 0 and 1 do not appear periodically within a preset number of periods to obtain the second state response or in the received signal The frame header does not appear to obtain the third status response, and when the seventh status response is obtained, determine that the channel status is no response.
  • An embodiment of the present invention also provides a device for determining a channel state, as shown in FIG. 7 , the device includes: a second receiving unit 4, a second detecting unit 5, and a second determining unit 6, wherein the second receiving unit 4 is used to receive signals at a preset sampling frequency; the second detection unit 5 is used to perform channel state detection with a low probability of false alarm on the received signal, so as to obtain at least one low false alarm state response; the second determination The unit 6 is configured to determine the channel state according to the at least one low-alarm state response.
  • the second detection unit 5 is configured to: perform at least one of signal existence detection and collision detection on the received signal, so as to obtain the at least one low leakage alarm state response according to the detection result.
  • the second detection unit 5 is configured to: calculate the power of the received signal; and obtain a first state response when no signal power of the first number of consecutive sampling points is greater than or equal to the first detection threshold.
  • the second detection unit 5 is used to: detect the collision of the received signal during demodulation; obtain the fourth state response when the received signal meets the collision condition; condition, a fifth state response is obtained.
  • the second determining unit 6 is configured to: determine that the channel status is no response when the first status response is obtained.
  • the second determination unit 6 is configured to: determine that the channel state is a collision when the fourth state response is obtained; determine that the channel state is responsive when the fifth state response is obtained.
  • Embodiments of the device for determining the channel state are similar to embodiments of the method for determining the channel state described above, and will not be repeated here.
  • the channel state determining device includes a processor and a memory.
  • the above-mentioned receiving unit, detecting unit and determining unit are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize corresponding functions.
  • the processor includes a kernel, and the kernel fetches corresponding program units from the memory.
  • the kernel can set one or more, and determine the channel status by adjusting kernel parameters.
  • Memory may include non-permanent memory in computer-readable media, in the form of random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM), memory including at least one memory chip.
  • RAM random access memory
  • ROM read-only memory
  • flash RAM flash memory
  • An embodiment of the present invention provides a storage medium on which a program is stored, and when the program is executed by a processor, the method for determining the channel state is realized.
  • An embodiment of the present invention provides a processor, where the processor is used to run a program, wherein the method for determining the channel state is executed when the program is running.
  • An embodiment of the present invention provides a device.
  • the device includes a processor, a memory, and a program stored in the memory and operable on the processor.
  • the processor executes the program, the following steps are implemented:
  • Receive signals at a preset sampling frequency perform channel state detection with a low probability of false alarm on the received signal to obtain at least one low false alarm state response and perform channel state detection with a low false alarm probability to obtain at least one low false alarm Status response: determining the channel status based on the at least one low false alarm status response and the at least one low false alarm status response.
  • performing channel state detection with a low probability of false alarm on the received signal to obtain at least one low false alarm state response includes: conducting tone waveform matching detection and frame header matching detection on the received signal At least one, to obtain the at least one low leakage alarm state response according to the detection result.
  • performing guided tone waveform matching detection on the received signal, so as to obtain the at least one low-leakage alarm state response according to the detection result includes: acquiring the guided tone part of the received signal; In , when 0 and 1 do not appear periodically within a preset number of cycles, a second status response is obtained.
  • performing frame header matching detection on the received signal to obtain the at least one low-alarm state response according to the detection result includes: obtaining a third state response when the frame header of the received signal does not appear.
  • performing channel state detection with a low false alarm probability on the received signal to obtain at least one low false alarm state response includes: performing signal validity detection and guided tone waveform matching detection on the received signal to obtain The at least one low false alarm state response is obtained according to the detection result.
  • performing signal validity detection and pilot tone waveform matching detection on the received signal, so as to obtain the at least one low false alarm state response according to the detection result includes: calculating the power of the received signal; The signal power of a number of consecutive sampling points is greater than or equal to the second detection threshold, and in the leading tone part of the received signal, 0 and 1 appear periodically within the preset number of cycles, and in the subsequent preset A sixth state response is obtained when the signal powers of the third number of consecutive sampling points are not less than the second detection threshold within the time period.
  • performing signal validity detection and pilot tone waveform matching detection on the received signal, so as to obtain the at least one low false alarm state response according to the detection result includes: calculating the power of the received signal; The signal power of the number of consecutive sampling points is greater than or equal to the second detection threshold, and in the pilot tone part of the received signal, 0 and 1 appear periodically within the preset number of cycles, but in the subsequent A seventh state response is obtained when the signal powers of the third number of consecutive sampling points appearing within the preset time are all less than the second detection threshold.
  • performing signal validity detection and pilot tone waveform matching detection on the received signal, so as to obtain the at least one low false alarm state response according to the detection result includes: calculating the power of the received signal; When the signal powers of two consecutive sampling points are greater than or equal to the second detection threshold, the seventh state response is obtained.
  • performing signal validity detection and pilot tone waveform matching detection on the received signal, so as to obtain the at least one low false alarm state response according to the detection result includes: calculating the power of the received signal; When the signal power of a number of consecutive sampling points is greater than or equal to the second detection threshold, and in the pilot tone part of the received signal, when 0 and 1 do not appear periodically within the preset number of cycles, it is obtained The seventh state responds.
  • determining the channel state according to the at least one low-alarm state response and the at least one low-false-alarm state response includes: 0 within a preset number of cycles in the pilot tone portion of the received signal
  • the channel status is determined to be a collision.
  • determining the channel state according to the at least one low-alarm state response and the at least one low-false-alarm state response includes: 0 within a preset number of cycles in the pilot tone portion of the received signal When the sum 1 does not appear periodically to obtain the second status response or the frame header of the received signal does not appear to obtain the third status response and the seventh status response is obtained, determine that the channel status is no response.
  • performing channel state detection with a low probability of false alarm on the received signal to obtain at least one low false alarm state response includes: performing at least one of signal presence detection and collision detection on the received signal , so as to obtain the at least one low-leakage alarm state response according to the detection result.
  • performing signal presence detection on the received signal, so as to obtain the at least one low-leakage alarm state response according to the detection result includes: calculating the power of the received signal; When it is greater than or equal to the first detection threshold, a first state response is obtained.
  • performing collision detection on the received signal to obtain the at least one low-leakage alarm state response according to the detection result includes: during demodulation, detecting the collision of the received signal; when the received signal meets the collision condition , to obtain the fourth state response; when the received signal does not meet the collision condition, obtain the fifth state response.
  • determining the channel state according to the at least one low-alarm state response includes: determining that the channel state is no response when the first state response is obtained.
  • determining the channel state according to the at least one low-alarm state response includes: determining that the channel state is a collision when obtaining the fourth state response; and determining that the channel state is a collision when obtaining the fifth state response, Determining that the channel status is responsive.
  • the devices in this article can be servers, PCs, PADs, mobile phones, etc.
  • the present application also provides a computer program product, which, when executed on a data processing device, is adapted to execute a program initialized with the following method steps:
  • Receive signals at a preset sampling frequency perform channel state detection with a low probability of false alarm on the received signal to obtain at least one low false alarm state response and perform channel state detection with a low false alarm probability to obtain at least one low false alarm Status response: determining the channel status based on the at least one low false alarm status response and the at least one low false alarm status response.
  • performing channel state detection with a low probability of false alarm on the received signal to obtain at least one low false alarm state response includes: conducting tone waveform matching detection and frame header matching detection on the received signal At least one, to obtain the at least one low leakage alarm state response according to the detection result.
  • performing guided tone waveform matching detection on the received signal, so as to obtain the at least one low-leakage alarm state response according to the detection result includes: acquiring the guided tone part of the received signal; In , when 0 and 1 do not appear periodically within a preset number of cycles, a second status response is obtained.
  • performing frame header matching detection on the received signal to obtain the at least one low-alarm state response according to the detection result includes: obtaining a third state response when the frame header of the received signal does not appear.
  • performing channel state detection with a low false alarm probability on the received signal to obtain at least one low false alarm state response includes: performing signal validity detection and guided tone waveform matching detection on the received signal to obtain The at least one low false alarm state response is obtained according to the detection result.
  • performing signal validity detection and pilot tone waveform matching detection on the received signal, so as to obtain the at least one low false alarm state response according to the detection result includes: calculating the power of the received signal; The signal power of a number of consecutive sampling points is greater than or equal to the second detection threshold, and in the leading tone part of the received signal, 0 and 1 appear periodically within the preset number of cycles, and in the subsequent preset A sixth state response is obtained when the signal powers of the third number of consecutive sampling points are not less than the second detection threshold within the time period.
  • performing signal validity detection and pilot tone waveform matching detection on the received signal, so as to obtain the at least one low false alarm state response according to the detection result includes: calculating the power of the received signal; The signal power of the number of consecutive sampling points is greater than or equal to the second detection threshold, and in the pilot tone part of the received signal, 0 and 1 appear periodically within the preset number of cycles, but in the subsequent A seventh state response is obtained when the signal powers of the third number of consecutive sampling points appearing within the preset time are all less than the second detection threshold.
  • performing signal validity detection and pilot tone waveform matching detection on the received signal, so as to obtain the at least one low false alarm state response according to the detection result includes: calculating the power of the received signal; When the signal powers of two consecutive sampling points are greater than or equal to the second detection threshold, the seventh state response is obtained.
  • performing signal validity detection and pilot tone waveform matching detection on the received signal, so as to obtain the at least one low false alarm state response according to the detection result includes: calculating the power of the received signal; When the signal power of a number of consecutive sampling points is greater than or equal to the second detection threshold, and in the pilot tone part of the received signal, when 0 and 1 do not appear periodically within the preset number of cycles, it is obtained The seventh state responds.
  • determining the channel state according to the at least one low-alarm state response and the at least one low-false-alarm state response includes: 0 within a preset number of cycles in the pilot tone portion of the received signal
  • the channel status is determined to be a collision.
  • determining the channel state according to the at least one low-alarm state response and the at least one low-false-alarm state response includes: 0 within a preset number of cycles in the pilot tone portion of the received signal When the sum 1 does not appear periodically to obtain the second status response or the frame header of the received signal does not appear to obtain the third status response and the seventh status response is obtained, determine that the channel status is no response.
  • performing channel state detection with a low probability of false alarm on the received signal to obtain at least one low false alarm state response includes: performing at least one of signal presence detection and collision detection on the received signal , so as to obtain the at least one low-leakage alarm state response according to the detection result.
  • performing signal presence detection on the received signal, so as to obtain the at least one low-leakage alarm state response according to the detection result includes: calculating the power of the received signal; When it is greater than or equal to the first detection threshold, a first state response is obtained.
  • performing collision detection on the received signal to obtain the at least one low-leakage alarm state response according to the detection result includes: during demodulation, detecting the collision of the received signal; when the received signal meets the collision condition , to obtain the fourth state response; when the received signal does not meet the collision condition, obtain the fifth state response.
  • determining the channel state according to the at least one low-alarm state response includes: determining that the channel state is no response when the first state response is obtained.
  • determining the channel state according to the at least one low-alarm state response includes: determining that the channel state is collision when obtaining the fourth state response; and determining the channel state as a collision when obtaining the fifth state response, Determining that the channel status is responsive.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions
  • the device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.
  • a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
  • processors CPUs
  • input/output interfaces network interfaces
  • memory volatile and non-volatile memory
  • Memory may include non-permanent storage in computer readable media, in the form of random access memory (RAM) and/or nonvolatile memory such as read only memory (ROM) or flash RAM.
  • RAM random access memory
  • ROM read only memory
  • flash RAM flash random access memory
  • Computer-readable media including both permanent and non-permanent, removable and non-removable media, can be implemented by any method or technology for storage of information.
  • Information may be computer readable instructions, data structures, modules of a program, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Flash memory or other memory technology, Compact Disc Read-Only Memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, Magnetic tape cartridge, tape magnetic disk storage or other magnetic storage device or any other non-transmission medium that can be used to store information that can be accessed by a computing device.
  • computer-readable media excludes transitory computer-readable media, such as modulated data signals and carrier waves.

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Abstract

本发明实施例提供一种信道状态确定方法、装置和机器可读存储介质，属于通信技术领域。该方法包括：以预设采样频率接收信号；进行低漏警概率的信道状态检测，以得到至少一个低漏警状态响应以及进行低虚警概率的信道状态检测，以得到至少一个低虚警状态响应；根据所述至少一个低漏警状态响应和所述至少一个低虚警状态响应，确定所述信道状态。该信道状态确定方法和装置可对不同编码类型的信号作可靠准确的信道状态区分，减少重复无效的命令发送。

Description

信道状态确定方法、装置和机器可读存储介质 技术领域
本发明涉及通信技术领域，具体地涉及一种信道状态确定方法、装置和机器可读存储介质。
背景技术
当前对信道状态，尤其是射频识别(Radio Frequency Identification，RFID)的信道状态，并无准确的确定方法。对于RFID技术，获取可靠的信道状态有利于读写器对电子标签作高效的群读。
现有对信道状态，可以有以下检测方式：当读写器收到电子标签的返回信息后，先后检测返回数据的帧头数据是否被破坏，检测返回信息数据段是否违反FM0编码规则，检测读写器在协议规定的时间T1max内是否收到电子标签的任何信息。其分三个层次检测发生碰撞的可能，能够提高碰撞检测的准确性。但是，该方式没有对标签是否返回数据作状态区分，而且只适应FM0编码码型的碰撞检测，并且由于电子标签的灵敏度问题，有可能对碰撞误判。
发明内容
本发明实施例的目的是提供一种信道状态确定方法、装置和机器可读存储介质，该信道状态确定方法、装置和机器可读存储介质可对不同编码类型的信号作可靠准确的信道状态区分，减少重复无效的命令发送。
为了实现上述目的，本发明实施例提供一种信道状态确定方法，该方法包括：以预设采样频率接收信号；对所接收的信号进行低漏警概率的信道状态检测得到至少一个低漏警状态响应以及进行低虚警概率的信道状态检测 得到至少一个低虚警状态响应；根据所述至少一个低漏警状态响应和所述至少一个低虚警状态响应，确定所述信道状态。
优选地，所述对所接收的信号进行低漏警概率的信道状态检测，得到至少一个低漏警状态响应，包括：进行导音波形匹配检测以及帧头匹配检测中的至少一者，以根据检测结果得到所述至少一个低漏警状态响应。
优选地，对所接收的信号进行导音波形匹配检测，根据检测结果得到所述至少一个低漏警状态响应包括：获取所接收的信号的导音部分；在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现时，得到第二状态响应。
优选地，对所接收的信号进行帧头匹配检测根据检测结果得到所述至少一个低漏警状态响应包括：在所接收的信号的帧头未出现时，得到第三状态响应。
优选地，所述对所接收的信号进行低虚警概率的信道状态检测得到至少一个低虚警状态响应，包括：对所接收的信号进行信号有效性检测以及导音波形匹配检测，根据检测结果得到所述至少一个低虚警状态响应。
优选地，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，根据检测结果得到所述至少一个低虚警状态响应包括：计算所接收的信号的功率；在出现第二数量的连续采样点的信号功率均大于或等于第二检测门限，并在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性出现，且在随后的预设时间内未出现第三数量的连续采样点的信号功率均小于所述第二检测门限时，得到第六状态响应。
优选地，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，以根据检测结果得到所述至少一个低虚警状态响应包括：计算所接收的信号的功率；在出现第二数量的连续采样点的信号功率均大于或等于第二检测门限，并在所接收的信号的导音部分中，所述预设数量的周期内0和1周 期性出现，但在随后的预设时间内出现第三数量的连续采样点的信号功率均小于所述第二检测门限时，得到第七状态响应。
优选地，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，根据检测结果得到所述至少一个低虚警状态响应包括：计算所接收的信号的功率；在未出现第二数量的连续采样点的信号功率均大于或等于第二检测门限时，得到第七状态响应。
优选地，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，以根据检测结果得到所述至少一个低虚警状态响应包括：计算所接收的信号的功率；在出现第二数量的连续采样点的信号功率均大于或等于第二检测门限时，且在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性未出现时，得到第七状态响应。
优选地，根据所述至少一个低漏警状态响应和所述至少一个低虚警状态响应，确定所述信道状态，包括：在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现以得到第二状态响应或在所接收的信号的帧头未出现以得到第三状态响应，且得到所述第六状态响应时，确定所述信道状态为碰撞。
优选地，根据所述至少一个低漏警状态响应和所述至少一个低虚警状态响应，确定所述信道状态，包括：在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现以得到第二状态响应或在所接收的信号的帧头未出现以得到第三状态响应，且得到所述第七状态响应时，确定所述信道状态为无响应。
本发明实施例还提供一种信道状态确定方法，该方法包括：以预设采样频率接收信号；对所接收的信号进行低漏警概率的信道状态检测，得到至少一个低漏警状态响应；根据所述至少一个低漏警状态响应，确定所述信道状态。
优选地，所述对所接收的信号进行低漏警概率的信道状态检测，得到至少一个低漏警状态响应，包括：对所接收的信号进行信号有无检测以及碰撞检测中的至少一者，根据检测结果得到所述至少一个低漏警状态响应。
优选地，对所接收的信号进行信号有无检测，根据检测结果得到所述至少一个低漏警状态响应包括：计算所接收的信号的功率；在未出现第一数量的连续采样点的信号功率均大于或等于第一检测门限时，得到第一状态响应。
优选地，对所接收的信号进行碰撞检测，根据检测结果得到所述至少一个低漏警状态响应包括：在解调时，检测所接收的信号的碰撞；在所接收的信号符合碰撞条件时，得到第四状态响应；在所接收的信号未符合碰撞条件时，得到第五状态响应。
优选地，根据所述至少一个低漏警状态响应，确定所述信道状态，包括：在得到所述第一状态响应时，确定所述信道状态为无响应。
优选地，根据所述至少一个低漏警状态响应，确定所述信道状态，包括：在得到所述第四状态响应时，确定所述信道状态为碰撞；在得到所述第五状态响应时，确定所述信道状态为有响应。
本发明实施例还提供一种信道状态确定装置，该装置包括：第一接收单元、第一检测单元以及第一确定单元，其中，所述第一接收单元用于以预设采样频率接收信号；所述第一检测单元用于对所接收的信号进行低漏警概率的信道状态检测，以得到至少一个低漏警状态响应以及进行低虚警概率的信道状态检测，以得到至少一个低虚警状态响应；所述第一确定单元用于根据所述至少一个低漏警状态响应和所述至少一个低虚警状态响应，确定所述信道状态。
优选地，所述第一检测单元用于：对所接收的信号进行导音波形匹配检测以及帧头匹配检测中的至少一者，以根据检测结果得到所述至少一个低漏警状态响应。
优选地，所述第一检测单元用于：对所接收的信号进行导音波形匹配检测，以根据检测结果得到所述至少一个低漏警状态响应包括：获取所接收的信号的导音部分；在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现时，得到第二状态响应。
优选地，所述第一检测单元用于：进行帧头匹配检测，以根据检测结果得到所述至少一个低漏警状态响应包括：在所接收的信号的帧头未出现时，得到第三状态响应。
优选地，所述第一检测单元用于：对所接收的信号进行信号有效性检测以及导音波形匹配检测，以根据检测结果得到所述至少一个低虚警状态响应。
优选地，所述第一检测单元用于：计算接收信号的功率；在出现第二数量的连续采样点的信号功率均大于或等于第二检测门限，并在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性出现，且在随后的预设时间内未出现第三数量的连续采样点的信号功率均小于所述第二检测门限时，得到第六状态响应。
优选地，所述第一检测单元用于：计算接收信号的功率在出现第二数量的连续采样点的信号功率均大于或等于所述第二检测门限，并在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性出现，但在随后的预设时间内出现第三数量的连续采样点的信号功率均小于所述第二检测门限时，得到第七状态响应。
优选地，所述第一检测单元用于：计算所接收的信号的功率；在未出现第二数量的连续采样点的信号功率均大于或等于第二检测门限时，得到所述第七状态响应。
优选地，所述第一检测单元用于：计算所接收的信号的功率；在出现第二数量的连续采样点的信号功率均大于或等于所述第二检测门限时，且在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性未出现时， 得到所述第七状态响应。
优选地，所述第一确定单元用于：在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现以得到第二状态响应或在所接收的信号的帧头未出现以得到第三状态响应，且得到所述第六状态响应时，确定所述信道状态为碰撞。
优选地，所述第一确定单元用于：在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现以得到第二状态响应或在所接收的信号的帧头未出现以得到第三状态响应，且得到所述第七状态响应时，确定所述信道状态为无响应。
本发明一实施例还提供一种信道状态确定装置，该装置包括：第二接收单元、第二检测单元以及第二确定单元，其中，所述第二接收单元用于以预设采样频率接收信号；所述第二检测单元用于对所接收的信号进行低漏警概率的信道状态检测，以得到至少一个低漏警状态响应；所述第二确定单元用于根据所述至少一个低漏警状态响应，确定所述信道状态。
优选地，所述第二检测单元用于：进行信号有无检测以及碰撞检测中的至少一者，以根据检测结果得到所述至少一个低漏警状态响应。
优选地，所述第二检测单元用于：计算所接收的信号的功率；在未出现第一数量的连续采样点的信号功率均大于或等于第一检测门限时，得到第一状态响应。
优选地，所述第二检测单元用于：在解调时，检测所接收的信号的碰撞；在所接收的信号符合碰撞条件时，得到第四状态响应；在所接收的信号未符合碰撞条件时，得到第五状态响应。
优选地，所述第二确定单元用于：在得到所述第一状态响应时，确定所述信道状态为无响应。
优选地，所述第二确定单元用于：在得到所述第四状态响应时，确定所 述信道状态为碰撞；在得到所述第五状态响应时，确定所述信道状态为有响应。
本发明实施例还提供一种机器可读存储介质，其上存储有程序，该程序被执行时实现上文所述的信道状态确定方法。
通过上述技术方案，采用本发明提供的信道状态确定方法、装置和机器可读存储介质，以低漏警概率的信道状态检测和低虚警概率的信道状态检测两种检测方法的结合，有利于对信道状态做出准确地判断。并且可针对各种不同编码类型的信号作可靠准确的信道状态区分，减少重复无效的命令发送，且有利读写器对电子标签作高效盘点。
本发明实施例的其它特征和优点将在随后的具体实施方式部分予以详细说明。
附图说明
附图是用来提供对本发明实施例的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本发明实施例，但并不构成对本发明实施例的限制。在附图中：
图1是本发明一实施例提供的信道状态确定方法的流程图；
图2是本发明一实施例提供的低漏警概率的信道状态检测的流程图；
图3是本发明一实施例提供的低虚警概率的信道状态检测的流程图；
图4是本发明另一实施例提供的信道状态确定方法的流程图；
图5是本发明一实施例提供的信道状态判断示意图；
图6是本发明一实施例提供的信道状态确定装置的结构框图；
图7是本发明另一实施例提供的信道状态确定装置的结构框图。
附图标记说明
1-第一接收单元；2-第一检测单元；
3-第一确定单元；4-第二接收单元；
5-第二检测单元；6-第二确定单元。
具体实施方式
以下结合附图对本发明实施例的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本发明实施例，并不用于限制本发明实施例。
图1是本发明一实施例提供的信道状态确定方法的流程图。如图1所示，该方法包括：
步骤S101，以预设采样频率接收信号；
例如，对于电子标签，可以接收标签信号。接收标签信号可以为采集接收端的零中频模拟信号。
步骤S102，对所接收的信号进行低漏警概率的信道状态检测，以得到至少一个低漏警状态响应以及进行低虚警概率的信道状态检测，以得到至少一个低虚警状态响应；
例如，漏警指的是在探测范围内，由于存在噪声，把有信号误判为无信号；虚警指的是由于噪声总是客观存在的，当噪声信号的幅度超过检测门限时，雷达(或其他检测系统)就会被误认为发现目标。漏警概率低，意味虚警概率高，即错误的检测概率高，但是遗漏有效信号的概率低；而虚警概率低，意味漏警概率高，即遗漏有效信号的概率高，但是错误的检测概率低。低漏警概率的信道状态检测指的是：使用该信道状态检测的方式，可以保证该检测过程中遗漏有效信号的概率低(低漏警)；而低虚警概率的信道状态检测指的是：使用该信道状态检测的方式，可以保证该检测过程中错误的检测概率低(低虚警)。而所谓的漏警概率低或虚警概率低，可以理解为只是低漏 警概率的信道状态检测和低虚警概率的信道状态检测之间相对来讲，即相比于低虚警概率的信道状态检测，低漏警概率的信道状态检测的漏警概率低；相比于低漏警概率的信道状态检测，低虚警概率的信道状态检测的虚警概率低。本发明实施例并非限定漏警概率低或虚警概率低的程度。
以下图2提供一种低漏警概率的信道状态检测，即依序进行信号有无检测、导音波形匹配检测、帧头匹配检测以及碰撞检测，以根据检测结果得到所述至少一个低漏警状态响应。可以理解的是，该检测过程和方式仅为优选地示例，并非限定本发明只能使用该种检测过程和方式。本领域技术人员可以在其中进行部分合理的调整，例如仅进行信号有无检测、导音波形匹配检测、帧头匹配检测以及碰撞检测中的一者、两者或三者，也可以使用其他低漏警概率的检测方式，在此不再赘述。
如图2所示，该方法包括：
步骤S201，计算所接收的信号的功率；
步骤S202，判断是否出现第一数量的连续采样点的信号功率均大于或等于第一检测门限；
例如，由于该方法是低漏警概率的信道状态检测，即减少遗漏有效信号的概率，因此第一检测门限可以设置的相对较小，使得接收更多信号。第一检测门限可以预先设置，也可以通过以下方法得到：在向标签发完命令后，RFID读写器由发射状态切换到接收状态，有效的标签信号未到达时，作噪声功率统计。利用噪声功率统计的结果乘以相应的系数生成第一检测门限。通过判断是否出现第一数量的连续采样点的信号功率均大于或等于第一检测门限，可以进行信号有无检测。
步骤S203，在未出现第一数量的连续采样点的信号功率均大于或等于第一检测门限时，得到第一状态响应；
例如，此时可以认为信号不存在，直接给出第一状态响应，不再继续后 续步骤。
步骤S204，在出现所述第一数量的连续采样点的信号功率均大于或等于所述第一检测门限时，获取所接收的信号的导音部分；
例如，此时可以认为信号存在，随后分析所接收的信号。信号的前导部分可以分为导音部分以及帧头部分，此时先获取导音部分以分析导音部分，进行导音波形匹配检测。导音波形匹配检测是对上述信号有无检测操作后信号存在的状态作进一步的检测，提高信号检测成功率。
步骤S205，判断在所接收的信号的导音部分中，预设数量的周期内0和1是否周期性出现；
例如，通过判断预设数量的周期内0和1是否周期性出现，来确定是否导音波形匹配。预设数量的值，可以与接收信号的预设采样频率相关。
步骤S206，在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现时，得到第二状态响应；
例如，此时直接给出第二状态响应，不再继续后续步骤。
步骤S207，在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性出现时，判断所接收的信号的帧头是否出现；
例如，此时说明导音波形匹配，然后获取帧头部分，进行帧头匹配检测。帧头匹配可以为后续碰撞检测提取有效数据。通过判断帧头是否出现，来确定是否帧头匹配。
步骤S208，在所接收的信号的帧头未出现时，得到第三状态响应；
例如，此时直接给出第三状态响应，不再继续后续步骤。
步骤S209，在所接收的信号的帧头出现时，在解调时，检测所接收的信号的碰撞；
例如，此时说明帧头匹配，然后检测所接收的信号的碰撞。
步骤S210，判断所接受的信号是否符合碰撞条件；
例如，碰撞条件可以理解为由于响应的叠加，导致0或1出现的持续时间，超过正常的持续时间。正常的持续时间可以设置为一个码元周期时间的1.25倍。也就是说，如果发现0或1出现的持续时间超出一个码元周期时间的1.25倍，可以认为符合碰撞条件。
步骤S211，在所接收的信号符合碰撞条件时，得到第四状态响应；
步骤S212，在所接收的信号未符合碰撞条件时，得到第五状态响应。
例如，此时，根据是否符合碰撞条件，给出不同的第四状态响应和第五状态响应。
以下图3提供一种低虚警概率的信道状态检测，即依序进行信号有效性检测以及导音波形匹配检测，以根据检测结果得到所述至少一个低虚警状态响应。可以理解的是，该检测过程和方式仅为示例，并非限定本发明只能使用该种检测过程和方式。本领域技术人员也可以使用其他低虚警概率的检测方式，或在其中进行部分合理的调整。
如图3所示，该方法包括：
步骤S301，计算所接收的信号的功率；
步骤S302，判断是否出现第二数量的连续采样点的信号功率均大于或等于所述第二检测门限；
例如，由于该方法是低虚警概率的信道状态检测，即减少错误检测的概率，因此第二检测门限可以设置的相对较大，且大于第一检测门限，使得尽量接收到的都是有效信号。第二检测门限可以预先设置，也可以通过以下方法得到：在向标签发完命令后，RFID读写器由发射状态切换到接收状态，有效的标签信号未到达时，作噪声功率统计。利用噪声功率统计的结果乘以相应的系数生成第二检测门限。通过判断是否出现第二数量的连续采样点的信号功率均大于或等于第二检测门限，可以进行信号有效性检测。
步骤S303，在未出现所述第二数量的连续采样点的信号功率均大于或 等于第二检测门限时，得到第七状态响应；
例如，此时，可以证明信号无效，直接给出第七状态响应，不再继续后续步骤。
步骤S304，在出现所述第二数量的连续采样点的信号功率均大于或等于所述第二检测门限时，判断在所接收的信号的导音部分中，所述预设数量的周期内0和1是否周期性出现；
例如，此时可以证明信号有效，然后再对导音部分进行判断。其中，预设数量的值，同样可以与接收信号的预设采样频率相关。
步骤S305，在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性未出现时，得到所述第七状态响应；
例如，此时直接给出第七状态响应，不再继续后续步骤。
步骤S306，在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性出现时，判断在随后的预设时间内是否出现第三数量的连续采样点的信号功率均小于所述第二检测门限；
例如，此时，在随后的预设时间内，还需要确定是否会出现因为碰撞导致的第三数量的连续采样点的信号功率均小于第二检测门限。在本发明实施例中，预设时间可以是一个码元周期的1.25倍。
步骤S307，在随后的预设时间内未出现第三数量的连续采样点的信号功率均小于所述第二检测门限时，得到第六状态响应；
步骤S308，在随后的预设时间内出现第三数量的连续采样点的信号功率均小于所述第二检测门限时，得到第七状态响应。
例如，根据是否出现第三数量的连续采样点的信号功率均小于所述第二检测门限，分别给出不同的第六状态响应和第七状态响应。
在步骤S102中得到至少一个低漏警状态响应和至少一个低虚警状态响应之后，继续步骤S103：
步骤S103，根据所述至少一个低漏警状态响应和所述至少一个低虚警状态响应，确定所述信道状态。
例如，在得到所述第二状态响应或所述第三状态响应，且得到所述第六状态响应时，确定所述信道状态为碰撞；在得到所述第二状态响应或所述第三状态响应，且得到所述第七状态响应时，确定所述信道状态为无响应。
图4是本发明另一实施例提供的信道状态确定方法的流程图。如图4所示，该方法包括：
步骤S401，以预设采样频率接收信号；
步骤S402，对所接收的信号进行低漏警概率的信道状态检测，以得到至少一个低漏警状态响应；
步骤S403，根据所述至少一个低漏警状态响应，确定所述信道状态。
在本实施例中，仅进行低漏警概率的信道状态检测，以及仅根据低漏警状态响应，确定所述信道状态。因此检测步骤S401-S402与上文实施例类似，在此不再赘述。对于步骤S403，得到所述第一状态响应时，确定所述信道状态为无响应；在得到所述第四状态响应时，确定所述信道状态为碰撞；在得到所述第五状态响应时，确定所述信道状态为有响应。
如图5所示，绘示了信道状态是如何判断的。进行低漏警概率的信道状态检测可以得到低漏警状态响应，即低漏警状态响应包括第一状态响应、第二状态响应、第三状态响应、第四状态响应和/或第五状态响应，进行低虚警概率的信道状态检测可以得到低虚警状态响应，即低警警状态响应包括第六状态响应和/或第七状态响应。在得到至少一个低漏警状态响应、或者得到至少一个低漏警状态响应和至少一个低虚警状态响应之后，可以结合至少一个低漏警状态响应、或者至少一个低漏警状态响应和至少一个低虚警状态响应，来确定信道状态。
另外，在接收信号之后，并进行低虚警概率的信道状态检测和低漏警概 率的信道状态检测之前，还可以进行通道处理。通道处理的功能有两个，一个功能为信号采样速率变换，另一个功能为滤除低频噪声、直流、高频分量。将输入的复信号通过相位旋转，使信号能量集中到实部上。
图6是本发明一实施例提供的信道状态确定装置的结构框图。如图6所示，该装置包括：第一接收单元1、第一检测单元2以及第一确定单元3，其中，所述第一接收单元1用于以预设采样频率接收信号；所述第一检测单元2用于对所接收的信号进行低漏警概率的信道状态检测，以得到至少一个低漏警状态响应，和/或进行低虚警概率的信道状态检测，以得到至少一个低虚警状态响应；所述第一确定单元3用于根据所述至少一个低漏警状态响应和/或所述至少一个低虚警状态响应，确定所述信道状态。
优选地，所述第一检测单元2用于：对所接收的信号进行导音波形匹配检测以及帧头匹配检测中的至少一者，以根据检测结果得到所述至少一个低漏警状态响应。
优选地，所述第一检测单元2用于：对所接收的信号进行导音波形匹配检测，以根据检测结果得到所述至少一个低漏警状态响应包括：获取所接收的信号的导音部分；在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现时，得到第二状态响应。
优选地，所述第一检测单元2用于：对所接收的信号进行帧头匹配检测，以根据检测结果得到所述至少一个低漏警状态响应包括：在所接收的信号的帧头未出现时，得到第三状态响应。
优选地，所述第一检测单元2用于：对所接收的信号进行信号有效性检测以及导音波形匹配检测，以根据检测结果得到所述至少一个低虚警状态响应。
优选地，所述第一检测单元2用于：计算所接收的信号的功率；在出现第二数量的连续采样点的信号功率均大于或等于第二检测门限，并在所接收 的信号的导音部分中，所述预设数量的周期内0和1周期性出现，且在随后的预设时间内未出现第三数量的连续采样点的信号功率均小于所述第二检测门限时，得到第六状态响应。
优选地，所述第一检测单元2用于：计算所接收的信号的功率在出现第二数量的连续采样点的信号功率均大于或等于所述第二检测门限，并在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性出现，但在随后的预设时间内出现第三数量的连续采样点的信号功率均小于所述第二检测门限时，得到第七状态响应。
优选地，所述第一检测单元2用于：计算所接收的信号的功率；在未出现第二数量的连续采样点的信号功率均大于或等于第二检测门限时，得到所述第七状态响应。
优选地，所述第一检测单元2用于：计算所接收的信号的功率；在出现第二数量的连续采样点的信号功率均大于或等于所述第二检测门限时，且在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性未出现时，得到所述第七状态响应。
优选地，所述第一确定单元3用于：在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现以得到第二状态响应或在所接收的信号的帧头未出现以得到第三状态响应，且得到所述第六状态响应时，确定所述信道状态为碰撞。
优选地，所述第一确定单元3用于：在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现以得到第二状态响应或在所接收的信号的帧头未出现以得到第三状态响应，且得到所述第七状态响应时，确定所述信道状态为无响应。
本发明一实施例还提供一种信道状态确定装置，如图7所示，该装置包括：第二接收单元4、第二检测单元5以及第二确定单元6，其中，所述第 二接收单元4用于以预设采样频率接收信号；所述第二检测单元5用于对所接收的信号进行低漏警概率的信道状态检测，以得到至少一个低漏警状态响应；所述第二确定单元6用于根据所述至少一个低漏警状态响应，确定所述信道状态。
优选地，所述第二检测单元5用于：对所接收的信号进行信号有无检测以及碰撞检测中的至少一者，以根据检测结果得到所述至少一个低漏警状态响应。
优选地，所述第二检测单元5用于：计算所接收的信号的功率；在未出现第一数量的连续采样点的信号功率均大于或等于第一检测门限时，得到第一状态响应。
优选地，所述第二检测单元5用于：在解调时，检测所接收的信号的碰撞；在所接收的信号符合碰撞条件时，得到第四状态响应；在所接收的信号未符合碰撞条件时，得到第五状态响应。
优选地，所述第二确定单元6用于：在得到所述第一状态响应时，确定所述信道状态为无响应。
优选地，所述第二确定单元6用于：在得到所述第四状态响应时，确定所述信道状态为碰撞；在得到所述第五状态响应时，确定所述信道状态为有响应。
上述信道状态确定装置的实施例与上文所述的信道状态确定方法的实施例类似，在此不再赘述。
所述信道状态确定装置包括处理器和存储器，上述接收单元、检测单元以及确定单元，等均作为程序单元存储在存储器中，由处理器执行存储在存储器中的上述程序单元来实现相应的功能。
处理器中包含内核，由内核去存储器中调取相应的程序单元。内核可以设置一个或以上，通过调整内核参数来确定信道状态。
存储器可能包括计算机可读介质中的非永久性存储器，随机存取存储器(RAM)和/或非易失性内存等形式，如只读存储器(ROM)或闪存(flash RAM)，存储器包括至少一个存储芯片。
本发明实施例提供了一种存储介质，其上存储有程序，该程序被处理器执行时实现所述信道状态确定方法。
本发明实施例提供了一种处理器，所述处理器用于运行程序，其中，所述程序运行时执行所述信道状态确定方法。
本发明实施例提供了一种设备，设备包括处理器、存储器及存储在存储器上并可在处理器上运行的程序，处理器执行程序时实现以下步骤：
以预设采样频率接收信号；对所接收的信号进行低漏警概率的信道状态检测，以得到至少一个低漏警状态响应以及进行低虚警概率的信道状态检测，以得到至少一个低虚警状态响应；根据所述至少一个低漏警状态响应和所述至少一个低虚警状态响应，确定所述信道状态。
优选地，所述对所接收的信号进行低漏警概率的信道状态检测，以得到至少一个低漏警状态响应，包括：对所接收的信号进行导音波形匹配检测以及帧头匹配检测中的至少一者，以根据检测结果得到所述至少一个低漏警状态响应。
优选地，对所接收的信号进行导音波形匹配检测，以根据检测结果得到所述至少一个低漏警状态响应包括：获取所接收的信号的导音部分；在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现时，得到第二状态响应。
优选地，对所接收的信号进行帧头匹配检测，以根据检测结果得到所述至少一个低漏警状态响应包括：在所接收的信号的帧头未出现时，得到第三状态响应。
优选地，所述对所接收的信号进行低虚警概率的信道状态检测，以得到 至少一个低虚警状态响应，包括：对所接收的信号进行信号有效性检测以及导音波形匹配检测，以根据检测结果得到所述至少一个低虚警状态响应。
优选地，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，以根据检测结果得到所述至少一个低虚警状态响应包括：计算所接收的信号的功率；在出现第二数量的连续采样点的信号功率均大于或等于第二检测门限，并在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性出现，且在随后的预设时间内未出现第三数量的连续采样点的信号功率均小于所述第二检测门限时，得到第六状态响应。
优选地，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，以根据检测结果得到所述至少一个低虚警状态响应包括：计算所接收的信号的功率；在出现第二数量的连续采样点的信号功率均大于或等于所述第二检测门限，并在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性出现，但在随后的预设时间内出现第三数量的连续采样点的信号功率均小于所述第二检测门限时，得到第七状态响应。
优选地，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，以根据检测结果得到所述至少一个低虚警状态响应包括：计算所接收的信号的功率；在未出现第二数量的连续采样点的信号功率均大于或等于第二检测门限时，得到所述第七状态响应。
优选地，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，以根据检测结果得到所述至少一个低虚警状态响应包括：计算所接收的信号的功率；在出现第二数量的连续采样点的信号功率均大于或等于所述第二检测门限时，且在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性未出现时，得到所述第七状态响应。
优选地，根据所述至少一个低漏警状态响应和所述至少一个低虚警状态响应，确定所述信道状态，包括：在所接收的信号的导音部分中，预设数量 的周期内0和1未周期性出现以得到第二状态响应或在所接收的信号的帧头未出现以得到第三状态响应，且得到所述第六状态响应时，确定所述信道状态为碰撞。
优选地，根据所述至少一个低漏警状态响应和所述至少一个低虚警状态响应，确定所述信道状态，包括：在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现以得到第二状态响应或在所接收的信号的帧头未出现以得到第三状态响应，且得到所述第七状态响应时，确定所述信道状态为无响应。
或执行程序时实现以下步骤：
以预设采样频率接收信号；对所接收的信号进行低漏警概率的信道状态检测，以得到至少一个低漏警状态响应；根据所述至少一个低漏警状态响应，确定所述信道状态。
优选地，所述对所接收的信号进行低漏警概率的信道状态检测，以得到至少一个低漏警状态响应，包括：对所接收的信号进行信号有无检测以及碰撞检测中的至少一者，以根据检测结果得到所述至少一个低漏警状态响应。
优选地，对所接收的信号进行信号有无检测，以根据检测结果得到所述至少一个低漏警状态响应包括：计算接收信号的功率；在未出现第一数量的连续采样点的信号功率均大于或等于第一检测门限时，得到第一状态响应。
优选地，对所接收的信号进行碰撞检测，以根据检测结果得到所述至少一个低漏警状态响应包括：在解调时，检测所接收的信号的碰撞；在所接收的信号符合碰撞条件时，得到第四状态响应；在所接收的信号未符合碰撞条件时，得到第五状态响应。
优选地，根据所述至少一个低漏警状态响应，确定所述信道状态，包括：在得到所述第一状态响应时，确定所述信道状态为无响应。
优选地，根据所述至少一个低漏警状态响应，确定所述信道状态，包括： 在得到所述第四状态响应时，确定所述信道状态为碰撞；在得到所述第五状态响应时，确定所述信道状态为有响应。
本文中的设备可以是服务器、PC、PAD、手机等。
本申请还提供了一种计算机程序产品，当在数据处理设备上执行时，适于执行初始化有如下方法步骤的程序：
以预设采样频率接收信号；对所接收的信号进行低漏警概率的信道状态检测，以得到至少一个低漏警状态响应以及进行低虚警概率的信道状态检测，以得到至少一个低虚警状态响应；根据所述至少一个低漏警状态响应和所述至少一个低虚警状态响应，确定所述信道状态。
优选地，所述对所接收的信号进行低漏警概率的信道状态检测，以得到至少一个低漏警状态响应，包括：对所接收的信号进行导音波形匹配检测以及帧头匹配检测中的至少一者，以根据检测结果得到所述至少一个低漏警状态响应。
优选地，对所接收的信号进行导音波形匹配检测，以根据检测结果得到所述至少一个低漏警状态响应包括：获取所接收的信号的导音部分；在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现时，得到第二状态响应。
优选地，对所接收的信号进行帧头匹配检测，以根据检测结果得到所述至少一个低漏警状态响应包括：在所接收的信号的帧头未出现时，得到第三状态响应。
优选地，所述对所接收的信号进行低虚警概率的信道状态检测，以得到至少一个低虚警状态响应，包括：对所接收的信号进行信号有效性检测以及导音波形匹配检测，以根据检测结果得到所述至少一个低虚警状态响应。
优选地，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，以根据检测结果得到所述至少一个低虚警状态响应包括：计算所接收的 信号的功率；在出现第二数量的连续采样点的信号功率均大于或等于第二检测门限，并在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性出现，且在随后的预设时间内未出现第三数量的连续采样点的信号功率均小于所述第二检测门限时，得到第六状态响应。
优选地，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，以根据检测结果得到所述至少一个低虚警状态响应包括：计算所接收的信号的功率；在出现第二数量的连续采样点的信号功率均大于或等于所述第二检测门限，并在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性出现，但在随后的预设时间内出现第三数量的连续采样点的信号功率均小于所述第二检测门限时，得到第七状态响应。
优选地，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，以根据检测结果得到所述至少一个低虚警状态响应包括：计算所接收的信号的功率；在未出现第二数量的连续采样点的信号功率均大于或等于第二检测门限时，得到所述第七状态响应。
优选地，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，以根据检测结果得到所述至少一个低虚警状态响应包括：计算所接收的信号的功率；在出现第二数量的连续采样点的信号功率均大于或等于所述第二检测门限时，且在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性未出现时，得到所述第七状态响应。
优选地，根据所述至少一个低漏警状态响应和所述至少一个低虚警状态响应，确定所述信道状态，包括：在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现以得到第二状态响应或在所接收的信号的帧头未出现以得到第三状态响应，且得到所述第六状态响应时，确定所述信道状态为碰撞。
优选地，根据所述至少一个低漏警状态响应和所述至少一个低虚警状态 响应，确定所述信道状态，包括：在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现以得到第二状态响应或在所接收的信号的帧头未出现以得到第三状态响应，且得到所述第七状态响应时，确定所述信道状态为无响应。
或执行程序时实现以下步骤：
以预设采样频率接收信号；对所接收的信号进行低漏警概率的信道状态检测，以得到至少一个低漏警状态响应；根据所述至少一个低漏警状态响应，确定所述信道状态。
优选地，所述对所接收的信号进行低漏警概率的信道状态检测，以得到至少一个低漏警状态响应，包括：对所接收的信号进行信号有无检测以及碰撞检测中的至少一者，以根据检测结果得到所述至少一个低漏警状态响应。
优选地，对所接收的信号进行信号有无检测，以根据检测结果得到所述至少一个低漏警状态响应包括：计算接收信号的功率；在未出现第一数量的连续采样点的信号功率均大于或等于第一检测门限时，得到第一状态响应。
优选地，对所接收的信号进行碰撞检测，以根据检测结果得到所述至少一个低漏警状态响应包括：在解调时，检测所接收的信号的碰撞；在所接收的信号符合碰撞条件时，得到第四状态响应；在所接收的信号未符合碰撞条件时，得到第五状态响应。
优选地，根据所述至少一个低漏警状态响应，确定所述信道状态，包括：在得到所述第一状态响应时，确定所述信道状态为无响应。
优选地，根据所述至少一个低漏警状态响应，确定所述信道状态，包括：在得到所述第四状态响应时，确定所述信道状态为碰撞；在得到所述第五状态响应时，确定所述信道状态为有响应。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、 或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
在一个典型的配置中，计算设备包括一个或多个处理器(CPU)、输入/输出接口、网络接口和内存。
存储器可能包括计算机可读介质中的非永久性存储器，随机存取存储器(RAM)和/或非易失性内存等形式，如只读存储器(ROM)或闪存(flash RAM)。存储器是计算机可读介质的示例。
计算机可读介质包括永久性和非永久性、可移动和非可移动媒体可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括，但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带，磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质，可用于存储可以被计算设备访问的信息。按照本文中的界定，计算机可读介质不包括暂存电脑可读媒体(transitory media)，如调制的数据信号和载波。
还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括要素的过程、方法、商品或者设备中还存在另外的相同要素。
以上仅为本申请的实施例而已，并不用于限制本申请。对于本领域技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原理之内所作的任何修改、等同替换、改进等，均应包含在本申请的权利要求范围之内。

Claims (23)

  1. 一种信道状态确定方法，其特征在于，该方法包括：
    以预设采样频率接收信号；
    对所接收的信号进行低漏警概率的信道状态检测得到至少一个低漏警状态响应以及进行低虚警概率的信道状态检测得到至少一个低虚警状态响应；
    根据所述至少一个低漏警状态响应和所述至少一个低虚警状态响应，确定所述信道状态。
  2. 根据权利要求1所述的信道状态确定方法，其特征在于，所述对所接收的信号进行低漏警概率的信道状态检测得到至少一个低漏警状态响应，包括：
    对所接收的信号进行导音波形匹配检测以及帧头匹配检测中的至少一者，根据检测结果得到所述至少一个低漏警状态响应。
  3. 根据权利要求2所述的信道状态确定方法，其特征在于，所述对所接收的信号进行导音波形匹配检测，根据检测结果得到所述至少一个低漏警状态响应包括：
    获取所接收的信号的导音部分；
    在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现时，得到第二状态响应。
  4. 根据权利要求2所述的信道状态确定方法，其特征在于，所述对所接收的信号进行帧头匹配检测，根据检测结果得到所述至少一个低漏警状态响应包括：
    在所接收的信号的帧头未出现时，得到第三状态响应。
  5. 根据权利要求1所述的信道状态确定方法，其特征在于，所述对所接收的信号进行低虚警概率的信道状态检测得到至少一个低虚警状态响应，包括：
    对所接收的信号进行信号有效性检测以及导音波形匹配检测，根据检测结果得到所述至少一个低虚警状态响应。
  6. 根据权利要求5所述的信道状态确定方法，其特征在于，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，根据检测结果得到所述至少一个低虚警状态响应包括：
    计算所接收的信号的功率；
    在出现第二数量的连续采样点的信号功率均大于或等于第二检测门限，并在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性出现，且在随后的预设时间内未出现第三数量的连续采样点的信号功率均小于所述第二检测门限时，得到第六状态响应。
  7. 根据权利要求5所述的信道状态确定方法，其特征在于，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，根据检测结果得到所述至少一个低虚警状态响应包括：
    计算所接收的信号的功率；
    在出现第二数量的连续采样点的信号功率均大于或等于第二检测门限，并在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性出现，但在随后的预设时间内出现第三数量的连续采样点的信号功率均小于所述第二检测门限时，得到第七状态响应。
  8. 根据权利要求5所述的信道状态确定方法，其特征在于，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，根据检测结果得到所述至少一个低虚警状态响应包括：
    计算所接收的信号的功率；
    在未出现第二数量的连续采样点的信号功率均大于或等于第二检测门限时，得到第七状态响应。
  9. 根据权利要求5所述的信道状态确定方法，其特征在于，所述对所接收的信号进行信号有效性检测以及导音波形匹配检测，根据检测结果得到所述至少一个低虚警状态响应包括：
    计算所接收的信号的功率；
    在出现第二数量的连续采样点的信号功率均大于或等于第二检测门限时，且在所接收的信号的导音部分中，所述预设数量的周期内0和1周期性未出现时，得到第七状态响应。
  10. 根据权利要求6所述的信道状态确定方法，其特征在于，根据所述至少一个低漏警状态响应和所述至少一个低虚警状态响应，确定所述信道状态，包括：
    在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现以得到第二状态响应，或在所接收的信号的帧头未出现以得到第三状态响应且得到所述第六状态响应时，确定所述信道状态为碰撞。
  11. 根据权利要求7-9中任一项权利要求所述的信道状态确定方法，其特征在于，根据所述至少一个低漏警状态响应和所述至少一个低虚警状态响应，确定所述信道状态，包括：
    在所接收的信号的导音部分中，预设数量的周期内0和1未周期性出现以得到第二状态响应，或在所接收的信号的帧头未出现以得到第三状态响应且得到所述第七状态响应时，确定所述信道状态为无响应。
  12. 一种信道状态确定方法，其特征在于，该方法包括：
    以预设采样频率接收信号；
    对所接收的信号进行低漏警概率的信道状态检测，得到至少一个低漏警状态响应；
    根据所述至少一个低漏警状态响应，确定所述信道状态。
  13. 根据权利要求12所述的信道状态确定方法，其特征在于，所述对所接收的信号进行低漏警概率的信道状态检测，得到至少一个低漏警状态响应，包括：
    对所接收的信号进行信号有无检测以及碰撞检测中的至少一者，根据检测结果得到所述至少一个低漏警状态响应。
  14. 根据权利要求13所述的信道状态确定方法，其特征在于，所述对所接收的信号进行信号有无检测，根据检测结果得到所述至少一个低漏警状态响应包括：
    计算所接收的信号的功率；
    在未出现第一数量的连续采样点的信号功率均大于或等于第一检测门限时，得到第一状态响应。
  15. 根据权利要求13所述的信道状态确定方法，其特征在于，所述对所接收的信号进行碰撞检测，根据检测结果得到所述至少一个低漏警状态响 应包括：
    在解调时，检测所接收的信号的碰撞；
    在所接收的信号符合碰撞条件时，得到第四状态响应；
    在所接收的信号未符合碰撞条件时，得到第五状态响应。
  16. 根据权利要求14所述的信道状态确定方法，其特征在于，根据所述至少一个低漏警状态响应，确定所述信道状态，包括：
    在得到所述第一状态响应时，确定所述信道状态为无响应。
  17. 根据权利要求15所述的信道状态确定方法，其特征在于，根据所述至少一个低漏警状态响应，确定所述信道状态，包括：
    在得到所述第四状态响应时，确定所述信道状态为碰撞；
    在得到所述第五状态响应时，确定所述信道状态为有响应。
  18. 一种信道状态确定装置，其特征在于，该装置包括：
    第一接收单元、第一检测单元以及第一确定单元，其中，
    所述第一接收单元用于以预设采样频率接收信号；
    所述第一检测单元用于对所接收的信号进行低漏警概率的信道状态检测得到至少一个低漏警状态响应以及进行低虚警概率的信道状态检测得到至少一个低虚警状态响应；
    所述第一确定单元用于根据所述至少一个低漏警状态响应和所述至少一个低虚警状态响应，确定所述信道状态。
  19. 根据权利要求18所述的信道状态确定装置，其特征在于，所述第一检测单元用于：
    对所接收的信号进行导音波形匹配检测以及帧头匹配检测中的至少一者，根据检测结果得到所述至少一个低漏警状态响应。
  20. 根据权利要求18所述的信道状态确定装置，其特征在于，所述第一检测单元用于：
    对所接收的信号进行信号有效性检测以及导音波形匹配检测，根据检测结果得到所述至少一个低虚警状态响应。
  21. 一种信道状态确定装置，其特征在于，该装置包括：
    第二接收单元、第二检测单元以及第二确定单元，其中，
    所述第二接收单元用于以预设采样频率接收信号；
    所述第二检测单元用于对所接收的信号进行低漏警概率的信道状态检测，得到至少一个低漏警状态响应；
    所述第二确定单元用于根据所述至少一个低漏警状态响应，确定所述信道状态。
  22. 根据权利要求21所述的信道状态确定装置，其特征在于，所述第二检测单元用于：
    对所接收的信号进行信号有无检测以及碰撞检测中的至少一者，根据检测结果得到所述至少一个低漏警状态响应。
  23. 一种机器可读存储介质，其特征在于，其上存储有程序，该程序被执行时实现权利要求1-11任一项权利要求所述的信道状态确定方法或权利要求12-17任一项权利要求所述的信道状态确定方法。
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