WO2023208147A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2023208147A1
WO2023208147A1 PCT/CN2023/091348 CN2023091348W WO2023208147A1 WO 2023208147 A1 WO2023208147 A1 WO 2023208147A1 CN 2023091348 W CN2023091348 W CN 2023091348W WO 2023208147 A1 WO2023208147 A1 WO 2023208147A1
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WIPO (PCT)
Prior art keywords
bit sequence
sequence
bit
ranging
communication
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PCT/CN2023/091348
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English (en)
Chinese (zh)
Inventor
刘辰辰
周正春
叶智钒
杨洋
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华为技术有限公司
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Publication of WO2023208147A1 publication Critical patent/WO2023208147A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18—Network planning tools
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds

Definitions

  • the present application relates to the field of communication technology, and in particular, to a communication method and device.
  • the ranging process is that the ranging initiating device sends a ranging signal and records the sending time of the ranging signal.
  • the ranging signal reaches the ranging response device after a certain transmission time.
  • the ranging response device determines the arrival time of the ranging signal based on the received signal.
  • the ranging response device sends a response signal to the ranging initiating device and records the response signal. of sending time.
  • the ranging initiating device receives the response signal and determines the arrival time of the response signal based on the received signal.
  • the ranging initiating device can obtain the round-trip time based on the sending time of the ranging signal and the arrival time of the response signal, and the ranging response device can obtain the response time interval based on the receiving time of the ranging signal and the sending time of the response signal.
  • the ranging response device may also send the response time interval to the ranging initiating device.
  • the ranging initiating device determines the propagation time of the wireless signal between the ranging initiating device and the ranging response device based on the round-trip time and the response time interval. Therefore, the ranging initiating device can determine the distance between the ranging initiating device and the ranging response device based on the propagation time and the speed of light.
  • the ranging response device can generate the same pseudo-random sequence locally and perform correlation operations with the received signal to estimate the arrival time of the signal.
  • the estimation of the arrival time of the ranging signal has a great relationship with the autocorrelation characteristics of the ranging signal. Specifically, each time the ranging response device receives a signal, it determines the autocorrelation characteristic value between the signal and the locally stored sequence. When the autocorrelation characteristic value between the received signal and the locally saved sequence reaches a peak value, the ranging response device can determine the reception moment of the signal as the arrival time of the ranging signal.
  • a secure ranging method based on scrambled timestamp sequence has been introduced.
  • the ranging initiating device generates a pseudo-random sequence and maps it to a series of pulse sequences to form a segment. Or multiple pseudo-random ranging signals. Since STS uses a random sequence, the side lobe of the autocorrelation function of the ranging signal formed by it is a random value, and there is no guarantee that its side lobe amplitude will be low, which will affect the accuracy of arrival time estimation.
  • This application provides a communication method and device to solve the problem of low accuracy in estimating signal arrival time.
  • this application provides a communication method, which method is suitable for a sending-side device.
  • the execution subject of the method may be a sending-side device, or may be a chip or a circuit.
  • the method includes: determining the first bit sequence and outputting the first bit sequence.
  • the first bit sequence includes a second bit sequence and N preset elements.
  • the second bit sequence is determined based on the first key and the initial value.
  • N is an integer greater than 0.
  • the value of the N preset elements is default value.
  • the amplitude of the main lobe and the maximum side of the autocorrelation function of the random sequence can be increased.
  • the ratio of the lobe amplitudes This can reduce the impact of noise or multipath transmission on signal estimation, thereby improving the accuracy of estimating signal arrival time.
  • the default value is 0. In this method, by inserting an element with a value of 0 in the second bit sequence, the security of the second bit sequence can be maintained without increasing the complexity of the relevant operations at the receiving end.
  • the default value is 1 or -1.
  • the ratio of the main lobe to the maximum side lobe is further increased, thereby improving the accuracy of estimating the arrival time of the signal.
  • the length of the first bit sequence is 256, and N is equal to 128; the position indexes of the N preset elements in the first bit sequence are: [20 24 26 28 30 31 32 35 36 40 42 43 44 45 48 50 51 54 56 57 58 59 62 65 66 67 68 70 74 75 77 80 81 83 84 86 88 89 91 92 93 94 95 96 97 98 102 103 104 105 106 107 109 113 114 115 117 118 119 121 122 123 126 128 129 130 133 134 135 138 139 140 141 143 144 145 146 149 150 151 152 154 155 157 163 164 167 169 170 171 172 173 1 74 176 178 180 181 182 184 185 187 189 191 193 194 195 196 198 199 200 201 203 206 213 215 216 218 219 220
  • the length of the first bit sequence is 256, and N is equal to 128;
  • the position indexes of the N preset elements in the first bit sequence are: [15 21 26 29 30 32 33 34 35 38 39 42 43 47 49 50 51 52 53 55 60 61 65 66 67 69 72 73 76 77 78 81 83 84 85 86 88 91 92 93 95 96 97 98 99 102 103 104 105 108 10 9 110 112 114 115 116 118 120 122 123 125 126 128 129 130 131 132 133 134 135 139 141 144 146 147 148 150 151 153 154 156 158 159 160 162 163 166 167 168 169 170 171 1 74 175 176 177 178 179 181 182 183 185 188 191 192 194 195 197 199 200 201 203 206 207 212 216 217 219 222 226 227
  • the length of the first bit sequence is 255, and N is equal to 127; the position indexes of the N preset elements in the first bit sequence are: [1 4 7 8 12 13 15 18 20 22 23 25 29 35 39 40 43 44 45 46 49 50 52 54 56 57 58 60 62 69 70 76 77 78 79 80 82 84 85 86 87 89 90 91 92 97 98 99 102 103 104 1 06 107 108 110 111 113 115 116 119 120 123 128 130 132 134 137 138 139 148 150 151 153 154 155 156 157 158 159 163 166 167 168 169 170 171 173 174 177 179 180 181 1 82 183 186 188 192 193 194 195 197 202 203 205 206 207 211 212 213 215 218 219 221 222 224 225 229 231 234 239 240 245
  • the i-th element among the N preset elements has multiple candidate insertion positions. For each candidate insertion position, in the bit sequence Insert the i-th element at the insertion position, and determine the ratio of the main lobe amplitude and the maximum amplitude of the side lobe of the autocorrelation function of the bit sequence obtained after inserting the i-th element at the insertion position. in, is the bit sequence obtained after inserting the i-1th element into the third bit sequence. The insertion position of the i-th element is determined based on the ratio corresponding to each candidate insertion position. i iterates over integers from 1 to N.
  • the ratio of the amplitude of the main lobe to the maximum amplitude of the side lobe can be increased, thereby improving the accuracy of estimating the signal arrival time.
  • outputting the first bit sequence includes: determining a ranging signal according to the first bit sequence; and sending the ranging signal.
  • determining the ranging signal based on the first bit sequence includes: spreading the first bit sequence to obtain a third bit sequence; determining the pulse sequence based on the third bit sequence; determining the ranging signal based on the pulse sequence. .
  • the second bit sequence is determined as follows: generating a fourth bit sequence based on the first key and the initial value; performing binary phase shift keying mapping on the fourth bit sequence to obtain the second bit sequence.
  • this application provides a communication method, which method is suitable for receiving-side equipment.
  • the execution subject of the method may be the receiving-side equipment, or may be a chip or circuit.
  • the method includes: determining a first bit sequence, the first bit sequence includes a second bit sequence and N preset elements, the second bit sequence is determined based on the first key and the initial value, N is an integer greater than 0, and N
  • the value of the preset element is a preset value; the arrival time of the ranging signal is determined according to the first bit sequence.
  • the amplitude of the main lobe and the maximum side of the autocorrelation function of the random sequence can be increased.
  • the ratio of the lobe amplitudes This can reduce the impact of noise or multipath transmission on signal estimation, thereby improving the accuracy of estimating signal arrival time.
  • the default value is 0. In this method, by inserting an element with a value of 0 in the second bit sequence, the security of the second bit sequence can be maintained without increasing the complexity of the relevant operations at the receiving end.
  • the default value is 1 or -1.
  • the ratio of the main lobe to the maximum side lobe is further increased, thereby improving the accuracy of estimating the arrival time of the signal.
  • the length of the first bit sequence is 256, and N is equal to 128; the position indexes of the N preset elements in the first bit sequence are: [20 24 26 28 30 31 32 35 36 40 42 43 44 45 48 50 51 54 56 57 58 59 62 65 66 67 68 70 74 75 77 80 81 83 84 86 88 89 91 92 93 94 95 96 97 98 102 103 104 105 106 107 109 113 114 115 117 118 119 121 122 123 126 128 129 130 133 134 135 138 139 140 141 143 144 145 146 149 150 151 152 154 155 157 163 164 167 169 170 171 172 173 1 74 176 178 180 181 182 184 185 187 189 191 193 194 195 196 198 199 200 201 203 206 213 215 216 218 219 220
  • the length of the first bit sequence is 256, and N is equal to 128;
  • the position indexes of the N preset elements in the first bit sequence are: [15 21 26 29 30 32 33 34 35 38 39 42 43 47 49 50 51 52 53 55 60 61 65 66 67 69 72 73 76 77 78 81 83 84 85 86 88 91 92 93 95 96 97 98 99 102 103 104 105 108 109 110 112 114 115 116 118 120 122 123 125 126 128 129 130 131 132 133 134 135 139 141 144 146 147 148 150 151 153 154 156 158 159 160 162 163 166 167 168 169 170 1 71 174 175 176 177 178 179 181 182 183 185 188 191 192 194 195 197 199 200 201 203 206 207 212 216 217 219 222 226 227
  • the length of the first bit sequence is 255, and N is equal to 127; the position indexes of the N preset elements in the first bit sequence are: [1 4 7 8 12 13 15 18 20 22 23 25 29 35 39 40 43 44 45 46 49 50 52 54 56 57 58 60 62 69 70 76 77 78 79 80 82 84 85 86 87 89 90 91 92 97 98 99 102 103 104 1 06 107 108 110 111 113 115 116 119 120 123 128 130 132 134 137 138 139 148 150 151 153 154 155 156 157 158 159 163 166 167 168 169 170 171 173 174 177 179 180 181 1 82 183 186 188 192 193 194 195 197 202 203 205 206 207 211 212 213 215 218 219 221 222 224 225 229 231 234 237 239 240 245 2
  • the i-th element among the N preset elements has multiple candidate insertion positions. For each candidate insertion position, in the bit sequence Insert the i-th element at the insertion position, and determine the ratio of the main lobe amplitude and the maximum amplitude of the side lobe of the autocorrelation function of the bit sequence obtained after inserting the i-th element at the insertion position. in, is the bit sequence obtained after inserting the i-1th element into the third bit sequence. The insertion position of the i-th element is determined based on the ratio corresponding to each candidate insertion position. i iterates over integers from 1 to N.
  • the ratio of the amplitude of the main lobe to the maximum amplitude of the side lobe can be increased, thereby improving the accuracy of estimating the signal arrival time.
  • determining the arrival time of the ranging signal based on the first bit sequence includes: determining the arrival time of the ranging signal based on a correlation result between the first bit sequence and the received signal.
  • the second bit sequence is determined as follows: generating a fourth bit sequence based on the first key and the initial value; performing binary phase shift keying mapping on the fourth bit sequence to obtain the second bit sequence.
  • this application provides a communication method, which method is suitable for a sending-side device.
  • the execution subject of the method may be a sending-side device, or may be a chip or a circuit.
  • the method includes: determining a first bit sequence, the first bit sequence is generated by replacing K elements with a value of 0 in the third bit sequence with K elements in a second bit sequence, and the second bit sequence is generated according to the first secret.
  • the key and initial value are determined, the length of the first bit sequence is the same as the length of the third bit sequence, K is an integer greater than 0; the first bit sequence is output.
  • the main lobe of the autocorrelation function of the random sequence can be increased.
  • the ratio of the amplitude to the amplitude of the maximum side lobe can reduce the impact of noise or multipath transmission on signal estimation, thereby improving the accuracy of estimating the signal arrival time.
  • the method further includes: determining the first sequence in a sequence set, and the third bit sequence is the first sequence or an equivalent sequence of the first sequence, the sequence set includes one or more sequences, and one or more All sequences are complete Beautiful sequence.
  • determining the first sequence in the sequence set includes: determining the first sequence in the sequence set according to the length of the second bit sequence.
  • the third bit sequence is an equivalent sequence obtained by performing one or more of the following operations on the first sequence: cyclic shift processing, or reverse order processing, or negation processing, or d times.
  • Sampling processing, d is an integer greater than 1; wherein, performing d times sampling processing on the first sequence includes: determining the fourth bit sequence, and the fourth bit sequence includes d first sequences; adding every d elements of the fourth bit sequence Extract an element. Communication security can be improved through the above methods.
  • the greatest common divisor of d and the length of the perfect sequence is 1.
  • the method further includes: determining a first equivalent sequence of the sequence based on the value of at least one bit in the second bit sequence, and the third bit sequence is the first equivalent sequence.
  • outputting the first bit sequence includes: generating a ranging signal according to the first bit sequence; and sending the ranging signal.
  • determining the ranging signal based on the first bit sequence includes: spreading the first bit sequence to obtain a fourth bit sequence; determining the pulse sequence based on the fourth bit sequence; determining the ranging signal based on the pulse sequence. .
  • the second bit sequence is determined as follows: generating a fifth bit sequence based on the first key and the initial value; performing binary phase shift keying mapping on the fifth bit sequence to obtain the second bit sequence.
  • this application provides a communication method, which method is suitable for receiving-side equipment.
  • the execution subject of the method may be the receiving-side equipment, or may be a chip or circuit.
  • the method includes: determining a first bit sequence, the first bit sequence is generated by replacing K elements with a value of 0 in the third bit sequence with K elements in a second bit sequence, and the second bit sequence is generated according to the first secret. Determined by the key and the initial value, the length of the first bit sequence is the same as the length of the third bit sequence, and K is an integer greater than 0; the arrival time of the ranging signal is determined based on the first bit sequence.
  • the main lobe of the autocorrelation function of the random sequence can be increased.
  • the ratio of the amplitude to the amplitude of the maximum side lobe can reduce the impact of noise or multipath transmission on signal estimation, thereby improving the accuracy of estimating the signal arrival time.
  • the method further includes: determining the first sequence in a sequence set, and the third bit sequence is the first sequence or an equivalent sequence of the first sequence, the sequence set includes one or more sequences, and one or more All sequences are perfect sequences.
  • equivalent sequences of perfect sequences untrusted devices can be prevented from learning the perfect sequences used by the sending and receiving devices, thereby improving the security of the sending and receiving devices.
  • determining the first sequence in the sequence set includes: determining the first sequence in the sequence set according to the length of the second bit sequence.
  • the third bit sequence is an equivalent sequence obtained by performing one or more of the following operations on the first sequence: cyclic shift processing, or reverse order processing, or negation processing, or d times.
  • Sampling processing, d is an integer greater than 1; wherein, performing d times sampling processing on the first sequence includes: determining the fourth bit sequence, and the fourth bit sequence includes d first sequences; adding every d elements of the fourth bit sequence Extract an element. Communication security can be improved through the above methods.
  • the greatest common divisor of d and the length of the perfect sequence is 1.
  • the method further includes: determining the sequence according to the value of at least one bit in the second bit sequence.
  • the first equivalent sequence of , the third bit sequence is the first equivalent sequence.
  • determining the arrival time of the ranging signal based on the first bit sequence includes: determining the arrival time of the ranging signal based on a correlation result between the first bit sequence and the received signal.
  • the second bit sequence is determined as follows: generating a fifth bit sequence based on the first key and the initial value; performing binary phase shift keying mapping on the fifth bit sequence to obtain the second bit sequence.
  • the present application also provides a communication device, where the device is a sending-side device or a chip in the sending-side device.
  • the communication device has the function of implementing any of the methods provided in the first aspect or the third aspect.
  • the communication device can be implemented by hardware, or can also be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above functions.
  • the communication device includes: a processor, the processor is configured to support the communication device in performing the corresponding functions of the sending side device in the method shown above.
  • the communications device may also include memory, which storage may be coupled to the processor, which holds program instructions and data necessary for the communications device.
  • the communication device further includes an interface circuit, which is used to support communication between the communication device and a device such as a receiving side device.
  • the communication device includes corresponding functional modules, respectively used to implement the steps in the above method.
  • Functions can be implemented by hardware, or by hardware executing corresponding software.
  • Hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the communication device includes a processing unit (or processing module) and a communication unit (or communication module). These units can perform the corresponding functions in the above method examples. For details, see the first aspect or the third aspect. The description in the method will not be repeated here.
  • the present application also provides a communication device, where the device is a receiving-side device or a chip in the receiving-side device.
  • the communication device has the function of implementing any of the methods provided in the second aspect or the fourth aspect.
  • the communication device can be implemented by hardware, or can also be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above functions.
  • the communication device includes: a processor, the processor is configured to support the communication device in performing the corresponding functions of the receiving side device in the method shown above.
  • the communications device may also include memory, which storage may be coupled to the processor, which holds program instructions and data necessary for the communications device.
  • the communication device further includes an interface circuit, which is used to support communication between the communication device and a device such as a sending side device.
  • the communication device includes corresponding functional modules, respectively used to implement the steps in the above method.
  • Functions can be implemented by hardware, or by hardware executing corresponding software.
  • Hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the communication device includes a processing unit (or processing module) and a communication unit (or communication module). These units can perform the corresponding functions in the above method examples. For details, see the second aspect or the fourth aspect. The description in the method will not be repeated here.
  • a communication device including a processor and an interface circuit.
  • the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or to send signals from the processor.
  • the processor is used to implement the method in the first aspect or the third aspect as well as any possible design through logic circuits or executing code instructions.
  • a communication device including a processor and an interface circuit.
  • the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or to send signals from the processor.
  • the processor is used to implement the aforementioned third step through logic circuits or execution of code instructions. Methods in either the second or fourth aspect and any possible design.
  • a computer-readable storage medium is provided.
  • Computer programs or instructions are stored in the computer-readable storage medium.
  • the above-described first to fourth aspects are implemented. method in any aspect and in any possible design.
  • a tenth aspect provides a computer program product storing instructions. When the instructions are executed by a processor, any one of the foregoing first to fourth aspects and the method in any possible design are implemented.
  • a chip system in an eleventh aspect, includes a processor and may also include a memory for implementing the method in the first or third aspect and any possible design.
  • the chip system can be composed of chips or include chips and other discrete devices.
  • a chip system in a twelfth aspect, includes a processor and may also include a memory for implementing the method in the aforementioned second or fourth aspect and any possible design.
  • the chip system can be composed of chips or include chips and other discrete devices.
  • a thirteenth aspect provides a communication system, which system includes the device described in the first aspect (such as a sending-side device) and the device described in the second aspect (such as a receiving-side device).
  • a fourteenth aspect provides a communication system, which includes the device described in the third aspect (such as a sending-side device) and the device described in the fourth aspect (such as a receiving-side device).
  • Figure 1 is a schematic flow chart of a ranging process according to an embodiment of the present application.
  • Figure 2 is a schematic diagram of an autocorrelation function result according to an embodiment of the present application.
  • Figure 3 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • Figure 5 is a schematic flow chart of a communication method according to an embodiment of the present application.
  • Figure 6 is a schematic diagram of a signal structure according to an embodiment of the present application.
  • Figure 7 is a schematic diagram of a simulation result according to an embodiment of the present application.
  • Figure 8 is a schematic flow chart of a communication method according to an embodiment of the present application.
  • Figure 9 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • Figure 10 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • UWB technology is widely used in positioning systems due to its large bandwidth (such as 500MHz or even larger) and its ability to achieve higher resolution than other wireless technologies.
  • the ranging process is shown in Figure 1.
  • the ranging initiating device sends a ranging signal and records the sending time of the ranging signal. T1.
  • the ranging signal reaches the ranging response device after a certain transmission time.
  • the ranging response device determines the arrival time T2 of the ranging signal based on the received signal.
  • the ranging response device sends a response signal to the ranging initiating device and records the response.
  • the signal transmission time is T3.
  • the ranging initiating device receives the response signal and determines the arrival time T4 of the response signal based on the received signal.
  • the ranging initiating device can obtain the round-trip time based on the sending time of the ranging signal and the arrival time of the response signal, and the ranging response device can obtain the response time interval based on the receiving time of the ranging signal and the sending time of the response signal.
  • the ranging response device may also send the response time interval to the ranging initiating device.
  • the ranging initiating device determines the propagation time of the wireless signal between the ranging initiating device and the ranging response device based on the round-trip time and the response time interval. Therefore, the ranging initiating device can determine the distance between the ranging initiating device and the ranging response device based on the propagation time and the speed of light.
  • the estimation of the arrival time of the signal is closely related to the autocorrelation characteristics of the ranging signal. Among them, assuming that the length of the sequence x(n) corresponding to the ranging signal is N, its periodic autocorrelation function R( ⁇ ) is defined as follows:
  • ⁇ is the position within the period
  • R( ⁇ ) is the amplitude at position ⁇
  • (n+ ⁇ )mod N refers to the remainder of n+ ⁇ divided by N.
  • the receiving end can perform correlation operations on the received signal and the locally saved sequence based on the above-mentioned autocorrelation characteristics, and can estimate the arrival time of the signal. For example, take the ranging response device estimating the arrival time of the ranging signal as an example. Each time the ranging response device receives a signal, it determines the correlation characteristic value between the signal and the locally saved sequence based on the autocorrelation function. When the correlation characteristic value between the received signal and the locally saved sequence reaches a peak value, the ranging response device can determine the reception moment of the signal as the arrival time of the ranging signal.
  • the ranging response device can determine the correlation characteristic value between the received signal y(n) and the locally saved sequence x(n) through the following formula:
  • the ranging initiating device generates a pseudo-random sequence and maps it to a series of pulse sequences to form a ranging signal.
  • the ranging response device can generate the same pseudo-random sequence locally and perform correlation operations with the received signal to estimate the arrival time of the signal. This avoids interference from illegal equipment and achieves the purpose of safe ranging.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • “And/or” describes the association of associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the related objects are in an "or” relationship.
  • “At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items).
  • at least one of a, b, or c Item (item) can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.
  • ordinal numbers such as “first” and “second” mentioned in the embodiments of this application are used to distinguish multiple objects and are not used to limit the size, content, order, and timing of multiple objects. , priority or importance, etc.
  • first shard and the second shard are just to distinguish different shards, but do not indicate the difference in position, priority or importance of the two shards.
  • the ranging signal is generated based on a random sequence
  • the side lobe of the autocorrelation function of the ranging signal formed is a random value, and the amplitude of the side lobe may be large, as shown in Figure 2 shown.
  • the main lobe and side lobes of the autocorrelation function may be overwhelmed, thus affecting the accuracy of arrival time estimation.
  • embodiments of the present application provide a communication method and device to solve the problem of low accuracy in estimating signal arrival time.
  • the method and the device are based on the same concept. Since the principles of the method and the device to solve the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated points will not be repeated.
  • the communication method provided by this application can be applied to various communication systems, for example, it can be the Internet of Things (IoT), narrowband Internet of things (NB-IoT), LTE, or the third
  • the fifth generation (5G) communication system can also be a hybrid architecture of LTE and 5G, or it can be a 5G NR system, 6G or new communication systems emerging in future communication development, etc.
  • the communication method provided by this application can be applied to a communication system with a star topology structure or a communication system with a point-to-point topology structure.
  • Figure 3 shows the architecture of a communication system with star topology.
  • four distance measuring devices are distance measuring devices 1 to 4 respectively.
  • Figure 4 shows the architecture of a communication system with a point-to-point topology.
  • four distance measuring devices are distance measuring devices 1 to 4 respectively.
  • the communication system shown in Figures 3 and 4 can be applied to synchronization, ranging, positioning, sensing and other scenarios.
  • the ranging initiating device sends a ranging signal to the ranging response device, and the ranging response device replies a ranging response signal to the ranging initiating device, so that the ranging initiating device determines the distance between the two.
  • the ranging initiating device can be a network device, and the ranging response device can be a terminal device; or the ranging initiating device and the ranging response device can both be terminal devices; or the ranging initiating device and the ranging response device can also be It may be other devices that can implement ranging, such as UWB devices, which is not limited in this application.
  • the ranging initiating device and the ranging response device are only a logical distinction, and the roles of the ranging initiating device and the ranging response device can also be interchanged.
  • ranging device 1 is a ranging initiating device
  • ranging device 2 is a ranging responding device
  • ranging device 1 is a ranging responding device.
  • the first device is the ranging initiating device and the second device is the ranging responding device as an example.
  • the operation of the first device can also be performed by a processor, a chip or a functional module in the first device; the operation of the second device can also be performed by a processor, a chip or a functional module in the second device. This application does not limit this.
  • FIG. 5 is a schematic flow chart of a communication method provided by this application.
  • the method includes:
  • the first device determines the first bit sequence.
  • the first bit sequence includes a second bit sequence and N preset elements.
  • M is an integer greater than
  • N is an integer greater than 0.
  • the second bit sequence is determined based on the first key and the initial value.
  • the first device can generate a fourth bit sequence based on the first key and the initial value, and perform binary phase shift keying (BPSK) mapping on the fourth bit sequence to obtain the The second bit sequence.
  • BPSK binary phase shift keying
  • the above process of generating the third bit sequence can refer to the implementation of generating a random sequence in the STS-based secure ranging method.
  • 0 in the third bit sequence can be mapped to 1 and 1 to -1.
  • the values of the above N preset elements are preset values.
  • the default value may be 0.
  • the security of the second bit sequence can be maintained without increasing the complexity of the relevant operations at the receiving end.
  • the default value can be 1 or -1.
  • the ratio of the main lobe to the maximum side lobe is further increased, thereby improving the accuracy of estimating the arrival time of the signal.
  • the first bit sequence may be obtained by inserting N elements whose values are preset values into the third bit sequence.
  • the insertion position of the N-th preset element can be determined through the following steps A1 to A2, and i traverses the integers from 1 to N:
  • the i-th element may have multiple candidate insertion positions. For each candidate insertion position, in the bit sequence Insert the i-th element at the insertion position, and determine the ratio of the main lobe amplitude and the maximum amplitude of the side lobe of the autocorrelation function of the bit sequence obtained after inserting the i-th element at the insertion position.
  • the ratio corresponding to the insertion position can be determined by the following formula, or it can also be understood that the ratio corresponding to the insertion position can satisfy the following formula:
  • PSR is the ratio corresponding to the insertion position
  • s i is the bit sequence obtained after inserting the i-th element at the insertion position
  • ⁇ is the displacement value
  • 2 is the autocorrelation function of s i
  • the amplitude of the main lobe, is the maximum amplitude of the side lobe of the autocorrelation function of s i .
  • A2 Determine the insertion position of the i-th element according to the ratio corresponding to the insertion position of each candidate.
  • One possible implementation is to select the insertion position with the largest ratio as the insertion position of the i-th element.
  • the following takes the preset value as 0 as an example to illustrate the positions of N preset elements in the first bit sequence.
  • Example 1 assume that the length of the first bit sequence is 256, N is 128, and M is 128.
  • the above-mentioned N preset elements are the following elements in the first bit sequence. It can also be understood that the above-mentioned N preset elements are the position indexes in the first bit sequence as:
  • Example 2 assume that the length of the first bit sequence is 256, N is 128, and M is 128.
  • the above-mentioned N preset elements are the following elements in the first bit sequence. It can also be understood that the above-mentioned N preset elements are the position indexes in the first bit sequence as:
  • Example 3 assume that the length of the first bit sequence is 255, N is 127, and M is 128.
  • the above-mentioned N preset elements are the following elements in the first bit sequence. It can also be understood that the above-mentioned N preset elements are the position indexes in the first bit sequence as:
  • the unspecified element in the first bit sequence is the above-mentioned second bit sequence, or it can also be understood that the unspecified position index in Examples 1 and 2 is the above-mentioned third bit sequence.
  • the position index of the two-bit sequence in the first bit sequence It should be noted that the position index used in the embodiment of this application starts from 1 Start counting.
  • Example 1 the position index set given in Example 1, Example 2 or Example 3 can also be used after being cyclically shifted according to the length of the first bit sequence.
  • the position index of the preset element after circular shift can be Mod(Index_set+K, M+N)+1.
  • Index_set is the position index set given in Example 1, Example 2 or Example 3.
  • K is a positive integer, representing the number of digits for circular shift.
  • Example 1 the position index set given in Example 1, Example 2 or Example 3 can also be used after being reversed and cyclically shifted by the length of the first bit sequence.
  • the position index of the preset element after reverse order and circular shift can be Mod(R-Index_set, M+N)+1.
  • Index_set is the position index set given in Example 1, Example 2 or Example 3, and R is a positive integer, representing the number of digits of circular shift.
  • the first device outputs the first bit sequence.
  • the first device may determine the signal according to the first bit sequence and send the signal.
  • the signal may be a ranging signal in a ranging scene, a sensing signal in a sensing scene, or a positioning signal in a positioning scene, etc.
  • the embodiments of this application do not specify the functions and names of the signals. limited.
  • determining the signal based on the first bit sequence can be achieved through the following steps B1 to B3:
  • the first bit sequence can be spread using a delta function ⁇ L (n) of length L to form a sequence
  • L is an integer greater than 0, which may be equal to the length of the first bit sequence, or may not be equal to the length of the first bit sequence, and is not specifically limited here.
  • ⁇ L (n) is:
  • a 1 in the third bit sequence can be mapped as a positive pulse, -1 as a negative pulse, and 0 as a null pulse (ie, no pulse).
  • the signal includes T slices, wherein the first slice among the T slices includes R pulse sequences, and the R pulse sequences include the pulse sequences generated by the above-mentioned B2, and T is an integer greater than 0, R is an integer greater than 0.
  • the T fragments can be encapsulated in silent intervals (also called gaps).
  • silent intervals also called gaps.
  • the signal includes two fragments, and there is a silent interval on both sides of each fragment, as shown in Figure 6. Show.
  • the second device determines the first bit sequence.
  • the method in which the second device generates the first bit sequence is the same as the method in which the first device generates the first bit sequence.
  • S501 the relevant description of S501, and repeated details will not be repeated.
  • S503 can be executed before S501, between S501 and S502, or after S502.
  • S503 can also be executed. Executed simultaneously with S501 or S502.
  • the second device determines the arrival time of the signal according to the first bit sequence.
  • the amplitude of the main lobe and the maximum side of the autocorrelation function of the random sequence can be increased.
  • the embodiment of the present application inserts 128 zeros into the random sequence with a length of 128 to obtain a bit sequence with a length of 256 (the sequence in Figure 7 1)
  • the ratio of the main lobe amplitude and the maximum side lobe amplitude of the autocorrelation function is improved by at least 2 decibels (dB) compared to a random sequence of length 128 (sequence 2 in Figure 7), even if compared to For a random sequence with a length of 256 (sequence 3 in Figure 7), the embodiment of the present application also has obvious gains.
  • Bit sequence 1 in the method described in Figure 8 of this application is equivalent to the first bit sequence involved in the third and fourth aspects of the invention.
  • Bit sequence 2 corresponds to the second bit sequence involved in the third and fourth aspects of the invention.
  • Bit sequence 3 corresponds to the third bit sequence involved in the third and fourth aspects of the invention.
  • Bit sequence 4 corresponds to the fourth bit sequence involved in the third and fourth aspects of the invention.
  • Bit sequence 5 corresponds to the fifth bit sequence involved in the third and fourth aspects of the invention.
  • FIG 8 is a schematic flow chart of a communication method provided by this application. The method includes:
  • the first device determines bit sequence 1.
  • bit sequence 1 can be obtained by replacing K zeros in bit sequence 3 with K elements in bit sequence 2.
  • K is an integer greater than 0. It can be understood that K is less than or equal to the number of 0s in bit sequence 3.
  • bit sequence 2 is determined based on the first key and the initial value.
  • bit sequence 2 please refer to the determination process of the second bit sequence in the method described in Figure 5, and the description will not be repeated here.
  • Bit sequence 3 can be a perfect sequence.
  • the first device and the second device have a consistent understanding of the number and/or position of replaced 0s in bit sequence 3.
  • the number and/or position of the replaced 0s in bit sequence 3 may be specified in the protocol, or may be pre-negotiated by the first device and the second device, or may be determined by the first device and the second device. determined in the same way.
  • bit sequence 3 can be determined in the following way: the first device can determine a sequence (hereinafter referred to as the first sequence) in the sequence set, and bit sequence 3 can be the first sequence or the first sequence. Equivalent sequences, where the sequence set includes one or more sequences, and one or more sequences are perfect sequences. Specifically, the first device may determine the first sequence in the sequence set according to the length of bit sequence 2.
  • Bit sequence 3 is an equivalent sequence obtained by performing one or more of the following operations on the first sequence: cyclic shift processing, reverse order processing, negation processing, or d times sampling processing, where d is greater than 1 integer. Among them, the greatest common divisor of d and the length of the first sequence can be 1.
  • C1 determine the bit sequence 4, which includes d first sequences.
  • the first sequence can be repeated d times to obtain bit sequence 4.
  • the extracted elements are composed into a bit sequence, and the bit sequence is the first sequence after d times sampling processing.
  • the first device and the second device may determine an equivalent sequence of the first sequence based on at least one element in the bit sequence 2 . For example, if the value of the at least one element is the first value, the first device and the second device can use the first equivalent sequence of the first sequence; if the value of the at least one element is the second value, the first device and the second device may use a second equivalent sequence of the first sequence.
  • the accuracy of the second device's estimated signal arrival time can be improved, and on the other hand, it can also prevent the untrusted device from learning the equivalent sequence used by the first device and the second device, thereby improving the security of signal transmission.
  • the following is an example of a sequence collection.
  • the above sequence set may include one or more perfect sequences in Table 1. It should be understood that Table 1 is only an illustrative description and does not limit the perfect sequences used in the embodiments of this application. Therefore, the above sequence may also include perfect sequences not shown in Table 1.
  • the first device outputs bit sequence 1.
  • the second device determines bit sequence 1.
  • the way in which the second device generates the bit sequence 1 is the same as the way in which the first device generates the bit sequence 1.
  • S803 can be executed before S801, between S801 and S802, or after S802.
  • S803 can also be executed. Executed simultaneously with S801 or S802.
  • the second device determines the arrival time of the signal based on bit sequence 1.
  • the amplitude of the main lobe of the autocorrelation function of the random sequence can be increased. and the maximum side lobe amplitude, thereby reducing the impact of noise or multipath transmission on signal estimation, thereby improving the accuracy of estimating signal arrival time.
  • the embodiment of the present application provides a communication device.
  • the structure of the communication device can be shown in Figure 9 and includes a communication module 902 and a processing module 901.
  • the communication device can be used to implement the method performed by the first device in the embodiment of FIG. 5 .
  • the device can be the first device itself, or it can be a chip or chipset or chip in the first device. part of the function used to perform related methods.
  • the processing module 901 is used to determine the first bit sequence, the first bit sequence is generated by replacing K elements with a value of 0 in the third bit sequence with K elements in the second bit sequence, the The second bit sequence is determined based on the first key and the initial value, the length of the first bit sequence is the same as the length of the third bit sequence, and the K is an integer greater than 0; communication module 902, used for Output the first bit sequence.
  • the processing module 901 is also configured to determine a ranging signal according to the first bit sequence.
  • the communication module 902 is specifically used to send the ranging signal.
  • the processing module 901 when determining the ranging signal based on the first bit sequence, may be specifically configured to: spread the first bit sequence to obtain a third bit sequence; determine a pulse sequence based on the third bit sequence. ; Determine the ranging signal according to the pulse sequence.
  • the communication device may be used to implement the method performed by the first device in the embodiment of FIG. 8 .
  • the device may be the first device itself, or may be a chip or chipset or chip in the first device. part of the function used to perform related methods.
  • the processing module 901 is used to determine the first bit sequence, the first bit sequence is generated by replacing K elements with a value of 0 in the third bit sequence with K elements in the second bit sequence, the The second bit sequence is determined based on the first key and the initial value, the length of the first bit sequence is the same as the length of the third bit sequence, and the K is an integer greater than 0; communication module 902, used for Output the first bit sequence.
  • the processing module 901 may also be configured to: determine a first sequence in a sequence set, the third bit sequence being the first sequence or an equivalent sequence of the first sequence, the sequence set including one or more sequence, and the one or more sequences are perfect sequences.
  • the processing module 901 is specifically configured to determine the first sequence in the sequence set according to the length of the second bit sequence when determining the first sequence in the sequence set.
  • the processing module 901 is further configured to determine a first equivalent sequence of the sequence according to the value of at least one bit in the second bit sequence, and the third bit sequence is the first equivalent sequence.
  • the processing module 901 is also configured to generate a ranging signal according to the first bit sequence.
  • the communication module 902 is specifically used to send the ranging signal.
  • the processing module 901 when determining the ranging signal according to the first bit sequence, is specifically configured to: convert the first ratio The special sequence is spread spectrum to obtain a fourth bit sequence; a pulse sequence is determined based on the fourth bit sequence; and the ranging signal is determined based on the pulse sequence.
  • the communication device may be specifically used to implement the method performed by the second device in the embodiment of FIG. 5 or the embodiment of FIG. 8.
  • the device may be the second device itself, or may be a chip or chip in the second device. A part of a group or chip that performs the function of the associated method.
  • the communication module 902 can be used to perform actions such as transceiving or input and output of the second device, and the processing module 901 can be used to perform actions other than transceiving or input and output, such as determining the first bit sequence, determining bit sequence 1, etc.
  • the method described in Figure 5 or Figure 8 please refer to the method described in Figure 5 or Figure 8 and will not be described here.
  • each functional module in each embodiment of the present application may be integrated into one processing unit. In the device, it can exist physically alone, or two or more modules can be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or software function modules. It can be understood that, for the functions or implementation of each module in the embodiments of this application, further reference can be made to the relevant descriptions of the method embodiments.
  • the communication device may be as shown in Figure 10 .
  • the device may be a communication device or a chip in the communication device.
  • the communication device may be a terminal device in the above embodiment or may be a terminal device in the above embodiment.
  • the device includes a processor 1001 and a communication interface 1002, and may also include a memory 1003.
  • the processing module 901 may be the processor 1001.
  • the communication module 902 may be the communication interface 1002.
  • the processor 1001 may be a CPU, a digital processing unit, or the like.
  • the communication interface 1002 may be a transceiver, an interface circuit such as a transceiver circuit, or a transceiver chip, or the like.
  • the device also includes: a memory 1003 for storing programs executed by the processor 1001.
  • the memory 1003 can be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or a volatile memory (volatile memory), such as a random access memory (random access memory). -access memory, RAM).
  • Memory 1003 is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • the processor 1001 is used to execute the program code stored in the memory 1003, and is specifically used to execute the actions of the above-mentioned processing module 901, which will not be described again in this application.
  • the communication interface 1002 is specifically used to perform the above-mentioned actions of the communication module 902, which will not be described again in this application.
  • connection medium between the above-mentioned communication interface 1002, processor 1001 and memory 1003 is not limited in the embodiment of the present application.
  • the memory 1003, the processor 1001 and the communication interface 1002 are connected through a bus 1004 in Figure 10.
  • the bus is represented by a thick line in Figure 10.
  • the connection methods between other components are only schematically explained. , is not limited.
  • the bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in Figure 10, but it does not mean that there is only one bus or one type of bus.
  • Embodiments of the present invention also provide a computer-readable storage medium for storing computer software instructions required to execute the above processor, which includes programs required to execute the above processor.
  • An embodiment of the present application also provides a communication system, including a communication device for realizing the function of the first device in the embodiment of FIG. 5 and a communication device for realizing the function of the second device in the embodiment of FIG. 5 .
  • An embodiment of the present application also provides a communication system, including a communication device for realizing the function of the first device in the embodiment of FIG. 8 and a communication device for realizing the function of the second device in the embodiment of FIG. 8 .
  • 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 that combines software and hardware aspects. Furthermore, the present application may employ one or more computers having computer usable program code embodied therein. It may be in the form of a computer program product implemented on a storage medium (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 that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction means, the instructions
  • the device implements the functions specified in a process or processes of the flowchart and/or a block or blocks of the block diagram.
  • These computer program instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby executing on the computer or other programmable device.
  • Instructions provide steps for implementing the functions specified in a process or processes of a flowchart diagram and/or a block or blocks of a block diagram.

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Abstract

La présente demande concerne un procédé et un appareil de communication, qui peuvent être appliqués à un système de communication d'un protocole UWB ou 802.15. Le procédé consiste à : déterminer une première séquence de bits, et délivrer la première séquence de bits, la première séquence de bits comprenant une seconde séquence de bits et N éléments prédéfinis, la seconde séquence de bits étant déterminée selon une première clé et une valeur initiale, N étant un nombre entier supérieur à 0, et les valeurs des N éléments prédéfinis étant des valeurs prédéfinies. Dans les modes de réalisation de la présente demande, les valeurs prédéfinies (c'est-à-dire lesdits N éléments prédéfinis) sont insérées dans une séquence aléatoire (c'est-à-dire ladite seconde séquence de bits), de telle sorte que le rapport de l'amplitude d'un lobe principal d'une fonction d'autocorrélation de la séquence aléatoire à l'amplitude du lobe latéral maximal de celle-ci peut être augmenté, l'impact du bruit, de la transmission à trajets multiples, etc, sur l'estimation de signal peuvent ainsi être réduits, et le problème de la précision d'estimation du temps d'arrivée d'un signal relativement faible peut donc être résolu.
PCT/CN2023/091348 2022-04-29 2023-04-27 Procédé et appareil de communication WO2023208147A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1816755A (zh) * 2003-07-07 2006-08-09 三菱电机株式会社 波形序列的生成
CN105493586A (zh) * 2013-07-31 2016-04-13 诺基亚技术有限公司 调制和解调的方法和装置
US10924303B2 (en) * 2018-03-05 2021-02-16 Apple Inc. Secure training sequence symbol structure
CN113359121A (zh) * 2020-03-02 2021-09-07 华为技术有限公司 信号处理方法及装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1816755A (zh) * 2003-07-07 2006-08-09 三菱电机株式会社 波形序列的生成
CN105493586A (zh) * 2013-07-31 2016-04-13 诺基亚技术有限公司 调制和解调的方法和装置
US10924303B2 (en) * 2018-03-05 2021-02-16 Apple Inc. Secure training sequence symbol structure
CN113359121A (zh) * 2020-03-02 2021-09-07 华为技术有限公司 信号处理方法及装置

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