Method and device for sending network signal of positioning network

Abstract

The present application provides a method and device for sending networking signals of a positioning network, wherein the method comprises: determining a networking mode of the positioning network according to an application scenario, wherein the networking mode comprises independent networking of the positioning network and joint networking of the positioning network with a communication network; configuring a positioning base station of the positioning network, or the positioning base station and the communication base station according to the networking mode, wherein the positioning base station is used to send a positioning signal or the positioning signal and a synchronization signal, and the communication base station is used to send the synchronization signal, which can solve the problem of increased base station deployment density and increased networking cost caused by positioning through communication base stations in related technologies, and can independently complete the networking of positioning functions by sending positioning signals through the positioning base stations of the positioning network, can jointly network with communication base stations, maintain the flexibility of positioning network networking, and positioning through positioning base stations has lower networking costs and positioning accuracy than positioning through communication base stations.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a method and device for sending networking signals of a positioning network. Background Art

[0002] Location information plays an increasingly important role in intelligent technology. Currently, typical emerging market applications, such as smart taxis, shared bicycles, autonomous driving, personnel management, etc., are all based on accurate location information.

[0003] The mainstream positioning technologies currently come from the Beidou and GPS satellite positioning systems. Satellite positioning systems can provide global positioning, and the positioning accuracy in open environments can reach 10 to 20 meters, which can basically meet most positioning needs. However, due to the path loss caused by the long distance, the satellite positioning system cannot cover indoors and commercial areas with dense high-rise buildings in cities. These two types of environments are the most densely populated scenes for commercial activities and personnel activities.

[0004] In order to solve the indoor and urban positioning problems, people have proposed many positioning methods, such as WiFi, UWB, Bluetooth, inertial navigation, etc., but the common disadvantage of these technologies is that they can only complete small-scale positioning. In order to solve the problem of wide-area indoor high-precision positioning, Figure 1 is a schematic diagram of a positioning system based on a communication base station in the related art, such as Figure 1 As shown, it is hoped that a wireless communication network with good coverage can be integrated to provide high-precision positioning functions, and positioning can be performed using the positioning system of the communication base station. Figure 2 It is based on the structural diagram of the base station in the related art, such as Figure 2 As shown in the figure, 4G and 5G wireless communication networks are essentially cellular networks. The typical structure of a communication base station generally consists of at least two parts: a baseband unit and a radio frequency unit. Each part has a very complex system. The complexity of the system leads to a large time jitter in the signal transmission within the base station. This jitter leads to the poor synchronization performance of the signals transmitted by the antenna ports of each base station. The current 3gpp standard stipulates that the synchronization index between base stations is 2us. This synchronization index is sufficient for general communication functions, but for the mainstream positioning technology OTDOA, this synchronization index will introduce a measurement error of 600 meters. At the same time, the use of base station positioning will increase the density of base station deployment, which will bring great cost problems.

[0005] No solution has yet been proposed for the problem in related technologies that positioning through communication base stations leads to increased base station deployment density and increased networking costs. Summary of the invention

[0006] The embodiments of the present application provide a method and apparatus for transmitting a channel state information reference signal, so as to at least solve the problem in the related art that positioning through communication base stations leads to an increase in base station deployment density and an increase in networking costs.

[0007] According to an embodiment of the present application, a method for sending a positioning network signal is provided, including:

[0008] Determine a networking mode of the positioning network according to the application scenario, wherein the networking mode includes independent networking of the positioning network and joint networking of the positioning network and the communication network;

[0009] The positioning base station of the positioning network, or the positioning base station and the communication base station are configured according to the networking mode, wherein the positioning base station is used to send a positioning signal or the positioning signal and a synchronization signal, and the communication base station is used to send the synchronization signal.

[0010] According to another embodiment of the present application, a positioning network signal sending device is provided, including:

[0011] A determination module, used to determine a networking mode of the positioning network according to an application scenario, wherein the networking mode includes independent networking of the positioning network and joint networking of the positioning network and a communication network;

[0012] A configuration module is used to configure the positioning base station of the positioning network according to the networking method, or to configure the positioning base station and the communication base station, wherein the positioning base station is used to send a positioning signal or the positioning signal and a synchronization signal, and the communication base station is used to send the synchronization signal.

[0013] According to another embodiment of the present application, a computer-readable storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when running.

[0014] According to another embodiment of the present application, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0015] Through the present application, the networking mode of the positioning network is determined according to the application scenario, wherein the networking mode includes independent networking of the positioning network and joint networking of the positioning network with the communication network; the positioning base station of the positioning network, or the positioning base station and the communication base station are configured according to the networking mode, wherein the positioning base station is used to send a positioning signal or the positioning signal and a synchronization signal, and the communication base station is used to send the synchronization signal. This can solve the problem of increased base station deployment density and increased networking cost caused by positioning through communication base stations in related technologies. By sending positioning signals through the positioning base stations of the positioning network, the positioning function networking can be independently completed, and it can be jointly networked with the communication base station to maintain the flexibility of the positioning network networking. Positioning through the positioning base station has lower networking cost and positioning accuracy than positioning by the communication base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 It is a schematic diagram of a positioning system based on a communication base station in the related art;

[0018] Figure 2 It is a structural diagram of a base station according to the related art;

[0019] Figure 3 It is a hardware structure block diagram of a mobile terminal of a method for sending a networking signal of a positioning network in an embodiment of the present application;

[0020] Figure 4 is a flowchart of a method for sending a networking signal of a positioning network according to an embodiment of the present application;

[0021] Figure 5 It is a flow chart of the positioning network signal configuration and transmission according to an embodiment of the present invention;

[0022] Figure 6 It is a schematic diagram of signals transmitted by a communication base station according to a joint networking mode;

[0023] Figure 7 It is a schematic diagram of the positioning signal transmitted by the positioning network according to the joint networking mode;

[0024] Figure 8 is a schematic diagram of a signal transmitted by a positioning network in an independent networking mode according to an embodiment of the present application;

[0025] Fig. 9 is a schematic diagram of the SSB composition according to an embodiment of the present application;

[0026] Fig.10is a schematic diagram of the structure of synchronization signal transmission according to an embodiment of the present application;

[0027] Fig.11 is a schematic diagram of a communication base station punching according to an embodiment of the present application;

[0028] Fig.12 is a flowchart of PRS generation according to an embodiment of the present application;

[0029] Fig.13 is a schematic diagram of a positioning signal transmitted by a base station according to an embodiment of the present application;

[0030] Fig.14 It is a block diagram of a networking signal sending device of a positioning network according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0033] Example 1

[0034] The method embodiment provided in the first embodiment of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 3 is a hardware structure block diagram of a mobile terminal of a method for sending a networking signal of a positioning network in an embodiment of the present application, such as Figure 3 As shown, the mobile terminal may include one or more ( Figure 3 Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data. Optionally, the mobile terminal may also include a transmission device 106 and an input / output device 108 for communication functions. It can be understood by those skilled in the art that Figure 3 The structure shown is for illustration only and does not limit the structure of the mobile terminal. Figure 3 More or fewer components as shown, or with Figure 3 Different configurations shown.

[0035] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the message receiving method in the embodiment of the present application. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, to implement the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories can be connected to the mobile terminal 10 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0036] The transmission device 106 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the mobile terminal 10. In one example, the transmission device 106 includes a network adapter (Network INterface CoNtroller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (Radio Frequency, referred to as RF) module, which is used to communicate with the Internet wirelessly.

[0037] Based on the above mobile terminal, a method for sending networking signals of a positioning network is provided in this embodiment. Figure 4 is a flowchart of a method for sending a networking signal of a positioning network according to an embodiment of the present application, such as Figure 4 As shown, the process includes the following steps:

[0038] Step S402, determining a networking mode of the positioning network according to an application scenario, wherein the networking mode includes independent networking of the positioning network and joint networking of the positioning network and a communication network;

[0039] In the embodiment of the present invention, the above application scenarios include: a first scenario with positioning requirements and communication requirements for wireless networks, and a second scenario with only positioning requirements for wireless networks. Correspondingly, the above step S402 may specifically include: if the application scenario is the first scenario, determining that the networking mode is a joint networking of the positioning network and the communication network; if the application scenario is the second scenario, determining that the networking mode is an independent networking of the positioning network.

[0040] Step S404: configure the positioning base station of the positioning network according to the networking mode, or configure the positioning base station and the communication base station, wherein the positioning base station is used to send a positioning signal or the positioning signal and a synchronization signal, and the communication base station is used to send the synchronization signal.

[0041] In an embodiment of the present invention, the above-mentioned step S404 may specifically include: if the networking mode is independent networking of the positioning network, configuring the positioning signal resources, the positioning signal parameters and the synchronization signal parameters for the positioning base station, wherein the positioning base station is used to generate the synchronization signal according to the synchronization signal parameters, and send the synchronization signal on the pre-defined resources; and generate the positioning signal according to the positioning signal parameters and the positioning signal resources, and send the positioning signal on the positioning signal resources; if the networking mode is joint networking of the positioning network and the communication network, configuring the positioning signal resources for the positioning base station and the communication base station, and configuring the positioning signal parameters for the positioning base station, wherein the communication base station is used to send the synchronization signal and does not send a signal on the configured positioning signal resources; the positioning base station is used to generate the positioning signal according to the positioning signal parameters and the positioning signal resources, and send the positioning signal on the positioning signal resources.

[0042] Through the above steps S402 to S404, the problem in the related technology that positioning through communication base stations leads to increased base station deployment density and increased networking costs can be solved. The positioning base station of the positioning network sends a positioning signal, which can independently complete the positioning function networking and can be jointly networked with the communication base station to maintain the flexibility of the positioning network. Positioning through the positioning base station has lower networking costs and positioning accuracy than positioning through the communication base station.

[0043] In the embodiment of the present invention, the positioning signal resources at least include: a time-frequency mapping pattern, a transmission period, the number of resources transmitted continuously, the number of continuous transmissions, and a resource starting position.

[0044] In the embodiment of the present invention, the positioning signal parameters at least include: a positioning signal ID, and a suffix type of a cyclic prefix CP.

[0045] In the embodiment of the present invention, the synchronization signal parameters at least include: cell ID, bandwidth parameters, subcarrier spacing, and starting frequency point position.

[0046] In the embodiment of the present invention, the communication base station is a base station that sends wireless signals necessary for communication services, and the positioning base station is a base station that only sends wireless signals necessary for positioning.

[0047] Figure 5 FIG. 1 is a flow chart of the positioning network signal configuration and transmission according to an embodiment of the present invention. Figure 5 As shown, including:

[0048] Step S501, determine the positioning network deployment mode; specifically, determine the positioning network networking mode according to the application scenario, if it is an independent positioning network networking mode, execute step S505, if it is a joint positioning network and communication network networking mode, execute step S502.

[0049] Step S502, configuring positioning signal resources for the positioning network and the communication network, and configuring positioning signal parameters for the positioning network;

[0050] Step S503, the communication network sends a communication signal (including a synchronization signal) according to the standard, and does not send service data at the wireless port according to the positioning signal resource configuration; Figure 6 It is a schematic diagram of the signal transmitted by the communication base station according to the joint networking mode, such as Figure 6 As shown, positioning signal resources are configured for the positioning network positioning base station and the communication network communication base station, and positioning signal parameters are configured for the positioning network positioning base station. The communication network communication base station sends necessary communication signals such as synchronization signals, and according to the positioning signal resource configuration, punches holes and does not send signals.

[0051] Step S504: the positioning network sends a positioning signal on the configured positioning signal resource. Figure 7 This is a schematic diagram of the positioning signal transmitted by the positioning network in the joint networking mode, such as Figure 7 As shown, the positioning base station of the positioning network generates a positioning signal according to the positioning signal parameters and the allocated resources, and sends the positioning signal on the configured positioning signal resources.

[0052] Step S505, configuring positioning signal resources, positioning signal parameters, and synchronization signal parameters for the positioning network;

[0053] Step S506, the positioning network sends a synchronization signal at the wireless port according to the synchronization signal parameters;

[0054] Step S507: The positioning network sends a positioning signal on the configured wireless resources. Figure 8 is a schematic diagram of a signal transmitted by a positioning network in an independent networking mode according to an embodiment of the present application, such as Figure 8 As shown, the positioning base station of the positioning network generates a synchronization signal according to the synchronization signal parameters and sends the synchronization signal on the resources specified by the standard.

[0055] The embodiments of the present application are described in detail below with reference to specific embodiments.

[0056] Example 1

[0057] When the 5G communication network + positioning network is used as a joint networking mode, the configuration and transmission of the positioning network networking signal includes the following steps:

[0058] Step 1: configure positioning signal resources for the positioning base station of the positioning network, and configure positioning signal parameters for the positioning base station of the positioning network.

[0059] Configure positioning signal resources for the positioning base station:

[0060] 1) PRS transmission period Time slot (80ms);

[0061] 2) Time slot offset Time slot (20ms);

[0062] 3) Number of consecutively sent subframes N PRS =4.

[0063] Positioning signal parameters include but are not limited to:

[0064] 1) Cyclic prefix type: standard cyclic prefix;

[0065] 2) Timeslot number:

[0066] 3)PRS 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, a total of 12 base stations;

[0067] 4) Comb tooth size:

[0068] 5) Number of PRS resource symbols L PRS =12;

[0069] 6)PRS start symbol:

[0070] 7) Resource element offset:

[0071] 9) Bandwidth BW = 100 MHz;

[0072] 10) Subcarrier spacing SCS = 30kHz.

[0073] The element offset k' on each symbol is shown in Table 1.

[0074] Table 1

[0075] l 2 3 4 5 6 7 8 9 10 11 12 13 k’ 0 6 3 9 1 7 4 10 2 8 5 11

[0076] The above parameters meet the 3gpp standard specifications.

[0077] Step 2: The communication base station of the communication network sends necessary communication signals such as synchronization signals, and according to the positioning signal resource configuration, punches holes without sending signals. The 5G synchronization signal sending process includes:

[0078] 1) Define the physical cell number;

[0079] NR defines 1008 physical cell numbers in,

[0080] 2) Primary synchronization signal (PSS) sequence generation;

[0081] PSS is located in the 127 subcarriers in the middle of the first symbol of SSB and is generated by the m sequence. For details on the generation process, refer to the R16 standard. The generation method is as follows:

[0082] d pss (n) = 1-2x(m), where

[0083] The shift register is: x(i+7)=(x(i+4)+x(i))mod2;

[0084] Initial state: [x(6)x(5)x(4)x(3)x(2)x(1)x(0)] = [1 1 1 0 1 1 0].

[0085] 3) Secondary synchronization signal (SSS) sequence generation;

[0086] SSS is located in the 127 subcarriers in the middle of the second symbol of SSB and is generated by the Gold sequence. The specific generation process is detailed in the R16 standard. The generation method is as follows:

[0087] d sss (n)=[1-2x0(n+m0)mod127][1-2x1(n+m1)mod127],0≤n<127;

[0088] The offsets of the two m-sequences are:

[0089] The shift register is:

[0090] The initial state is:

[0091] [x0(6)x0(5)x0(4)x0(3)x0(2)x0(1)x0(0)]=[0 0 0 0 0 0 1];

[0092] [x1(6)x1(5)x1(4)x1(3)x1(2)x1(1)x1(0)]=[0 0 0 0 0 0 1].

[0093] 4) PBCH DMRS signal generation;

[0094] PBCH DMRS is located in the 1st to 3rd symbols of SSB, with a total of 144 subcarriers. The PBCH DMRS signal is generated by the Gold sequence, a pseudo-random sequence commonly used in the NR physical layer. For details on the generation process, see the R16 standard.

[0095] The generation method is as follows:

[0096] It is composed of two m sequences: c(n)=(x1(n+N c )+x2(n+N c ))mod2, where N c =1600;

[0097] The shift register is:

[0098] The initial state is:

[0099] x1(0)=1, x1(n)=0, n=1,2,…,30;

[0100]

[0101] 5) PBCH bearer information generation;

[0102] PBCH is located in the 1st to 3rd symbols of SSB, with a total of 432 subcarriers. The system information carried is 32 bits in total, including the following parts:

[0103] 23-bit master information block (MIB): system high 6-bit frame number, SSB subcarrier spacing, subcarrier offset specific value, DMRS specific location, etc.;

[0104] 1-bit choice: indicates whether the current message is an extended MIB message (for forward compatibility);

[0105] 8 bits of additional information: the lower 4 bits of frame number, half-frame indication and SSB index.

[0106] The specific processing process of bit information includes but is not limited to the following steps:

[0107] Initial bit information generation and bit interleaving, adding CRC, Polar coding, rate matching, QPSK modulation, etc.

[0108] 6) Synchronization signal block (SSB) generation;

[0109] SSB consists of 4 OFDM symbols in the time domain and occupies 20 PRBs (ie, 240 subcarriers) in the frequency domain. Fig. 9 is a schematic diagram of the SSB composition according to an embodiment of the present application, such as Fig. 9As shown, the frequency domain positions of PSS, SSS and PBCH are fixed, and the frequency domain position of PBCHDMRS is offset according to the physical cell number, where The resource allocation of SSB is shown in Table 2.

[0110] Table 2

[0111]

[0112]

[0113] 7)SSB time-frequency domain position mapping;

[0114] Period: The NR standard specifies that the period can be 5ms, 10ms, 20ms, 40ms, 80ms, and 160ms, and the default value is 20ms.

[0115] Frequency band: NR specifies two frequency ranges: FR1 below 6GHz: 450MHz-6.0GHz, supporting a maximum channel bandwidth of 100MHz; millimeter wave band FR2: 24.25GHz-52.6GHz, supporting a maximum channel bandwidth of 400MHz.

[0116] Subcarrier spacing: NR defines four subcarrier spacings: 15kHz, 30kHz, 120kHz and 240kHz.

[0117] Synchronous signal group (SS Burst Set): One cycle contains one SS Burst Set, in which all SSBs are located in the same half frame (5ms) and transmitted on the same antenna port, and different SSBs have different SSB indexes.

[0118] The maximum number of SSBs in one cycle is L max : Determined by the frequency f, when f≤3GHz, L max =4; when 3GHz<f<6GHz, L max =8; when f≥6GHz, L max =64.

[0119] Time domain position mapping: The time domain position of SSB is determined by the subcarrier spacing and frequency range. The specific relationship is shown in Table 3.

[0120] Table 3

[0121]

[0122]

[0123] 8) Generate a synchronization signal.

[0124] Fig.10 is a schematic diagram of the structure of the synchronization signal transmission according to an embodiment of the present application, such as Fig.10 As shown, after the time-frequency domain position mapping, a transmitted synchronization signal can be generated.

[0125] Fig.11 Schematic diagram of a communication base station punching according to an embodiment of the present application, such as Fig.11 As shown, the communication network punches holes. According to the time-frequency resource position of the positioning signal configured by the positioning network, the communication network punches holes at the corresponding positions when sending small signals.

[0126] Step 3: The positioning base station of the positioning network generates a positioning signal according to the positioning signal parameters and the allocated resources, and sends the positioning signal on the configured positioning signal resources.

[0127] Fig.12 is a flowchart of PRS generation according to an embodiment of the present application, such as Fig.12 As shown, including:

[0128] S1, generates Gold code through m-sequence 1 and m-sequence 2. The Gold code is generated in the following way:

[0129] c(n)=(x1(n+N c )+x2(n+N c ))mod2

[0130] x1(n+31)=(x1(n+3)+x1(n))mod2

[0131] x2(n+31)=(x2(n+3)+x2(n+2)+x2(n+1)+x2(n))mod2

[0132] c(n) has a length of M, n = 0, ..., M-1, N c =1600, x1(0)=1, x1(n)=0, n=1,2,…,30. The initial value of x2(n) is c init =x2(0)·20+x2(1)·21+…+x2(30)·2 30 .

[0133] S2, PRS pilot sequence generation and time-frequency resource grid mapping. The PRS pilot sequence is obtained by QPSK modulation of the Gold code, specifically through the following methods:

[0134]

[0135]

[0136] m=0, 1, ...;

[0137]

[0138]

[0139] S3, PRS signal generation, performs fast Fourier transform (IFFT) on the pilot sequence on each symbol of the resource grid to obtain a time domain signal.

[0140] Fig.13 is a schematic diagram of a positioning signal transmitted by a base station according to an embodiment of the present application, such as Fig.13 As shown, PRS The positioning signal transmitted by the base station, the time slot offset (corresponding to T1 in the figure), PRS sending period Time slot (80ms, corresponding to T2 in the figure).

[0141] Example 2

[0142] When the 5G independent positioning network is used, the configuration and transmission of the positioning network signal includes the following steps:

[0143] Step 1: configure positioning signal resources, positioning signal parameters, and synchronization signal parameters for the positioning base station of the positioning network.

[0144] The configuration of the positioning base station is the positioning signal resource:

[0145] Bandwidth BW = 100 MHz;

[0146] Subcarrier spacing SCS = 30kHz;

[0147] PRS sending cycle Time slot (80ms);

[0148] Slot offset Time slot (20ms);

[0149] Number of consecutively sent subframes N PRS =4;

[0150] Positioning signal parameters include but are not limited to:

[0151] Cyclic prefix type: standard cyclic prefix;

[0152] Timeslot Number:

[0153] PRS 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, a total of 12 base stations.

[0154] Comb size:

[0155] The number of PRS resource symbols LPRS =12;

[0156] PRS start symbol:

[0157] Resource element offset:

[0158] The element offset k' on each symbol is shown in Table 4.

[0159] Table 4

[0160] l 2 3 4 5 6 7 8 9 10 11 12 13 k’ 0 6 3 9 1 7 4 10 2 8 5 11

[0161] The above parameters meet the 3gpp standard specifications.

[0162] Step 2: The positioning network positioning base station generates a synchronization signal according to the synchronization signal parameters and sends the synchronization signal on the resources specified by the standard. The 5G synchronization signal sending process includes:

[0163] 1) Define the physical cell number;

[0164] NR defines 1008 physical cell numbers in,

[0165] in,

[0166] 2) Primary synchronization signal (PSS) sequence generation;

[0167] The PSS is located in the 127 subcarriers in the middle of the first symbol of the SSB and is generated by an m-sequence. For details on the generation process, see the R16 standard.

[0168] The generation method is as follows: pss (n) = 1-2x(m), where

[0169] The shift register is: x(i+7)=(x(i+4)+x(i))mod2;

[0170] Initial state: [x(6)x(5)x(4)x(3)x(2)x(1)x(0)] = [1 1 1 0 1 1 0].

[0171] 3) Secondary synchronization signal (SSS) sequence generation;

[0172] SSS is located in the 127 subcarriers in the middle of the second symbol of SSB and is generated by the Gold sequence. The specific generation process is detailed in the R16 standard. The generation method is as follows:

[0173] d sss(n)=[1-2x0(n+m0)mod127][1-2x1(n+m1)mod127],0≤n<127;

[0174] The offsets of the two m-sequences are:

[0175] The shift register is:

[0176] The initial state is:

[0177] [x0(6)x0(5)x0(4)x0(3)x0(2)x0(1)x0(0)]=[0 0 0 0 0 0 1];

[0178] [x1(6)x1(5)x1(4)x1(3)x1(2)x1(1)x1(0)]=[0 0 0 0 0 0 1].

[0179] 4) PBCH DMRS signal generation;

[0180] PBCH DMRS is located in the 1st to 3rd symbols of SSB, with a total of 144 subcarriers. The PBCH DMRS signal is generated by the Gold sequence, a pseudo-random sequence commonly used in the NR physical layer. For details on the generation process, see the R16 standard. The generation method is as follows:

[0181]

[0182] It is composed of two m sequences: c(n)=(x1(n+N c )+x2(n+N c ))mod2, where N c =1600;

[0183] The shift register is:

[0184] The initial state is:

[0185] x1(0)=1, x1(n)=0, n=1,2,…,30;

[0186]

[0187] 5) PBCH bearer information generation;

[0188] PBCH is located in the 1st to 3rd symbols of SSB, with a total of 432 subcarriers. The system information carried is 32 bits in total, including the following parts:

[0189] 23-bit master information block (MIB): system high 6-bit frame number, SSB subcarrier spacing, subcarrier offset specific value, DMRS specific location, etc.;

[0190] 1-bit choice: indicates whether the current message is an extended MIB message (for forward compatibility);

[0191] 8 bits of additional information: the lower 4 bits of frame number, half-frame indication and SSB index.

[0192] The specific processing process of bit information includes but is not limited to the following steps:

[0193] Initial bit information generation and bit interleaving, adding CRC, Polar coding, rate matching, QPSK modulation, etc.

[0194] 6) Synchronization signal block (SSB) generation;

[0195] SSB is composed of 4 OFDM symbols in the time domain and occupies 20 PRBs (i.e. 240 subcarriers) in the frequency domain. Fig. 9 As shown, the frequency domain positions of PSS, SSS and PBCH are fixed, and the frequency domain position of PBCH DMRS is offset according to the physical cell number, where The resource allocation of SSB is shown in Table 2.

[0196] 7)SSB time-frequency domain position mapping;

[0197] Period: The NR standard specifies that the period can be 5ms, 10ms, 20ms, 40ms, 80ms, and 160ms, and the default value is 20ms.

[0198] Frequency band: NR specifies two frequency ranges: FR1 below 6GHz: 450MHz-6.0GHz, supporting a maximum channel bandwidth of 100MHz; millimeter wave band FR2: 24.25GHz-52.6GHz, supporting a maximum channel bandwidth of 400MHz.

[0199] Subcarrier spacing: NR defines four subcarrier spacings: 15kHz, 30kHz, 120kHz and 240kHz.

[0200] Synchronous signal group (SS Burst Set): One cycle contains one SS Burst Set, in which all SSBs are located in the same half frame (5ms) and transmitted on the same antenna port. Different SSBs have different SSB indexes.

[0201] The maximum number of SSBs in one cycle is L max : Determined by the frequency f, when f≤3GHz, Lmax =4; when 3GHz<f<6GHz, L max =8; when f≥6GHz, L max =64.

[0202] Time domain position mapping: The time domain position of SSB is determined by the subcarrier spacing and frequency range. The specific relationship is shown in Table 3.

[0203] 8) Generate a synchronization signal.

[0204] After the time-frequency domain position mapping, the synchronization signal can be generated and sent. The specific structure is as follows: Fig.10 shown.

[0205] Step 3: The positioning network generates a positioning signal based on the positioning signal parameters of the base station and the allocated resources, and sends the positioning signal on the configured wireless resources. Fig.12 As shown, PRS generation includes:

[0206] S1, Gold code generation:

[0207] c(n)=(x1(n+N c )+x2(n+N c ))mod2;

[0208] x1(n+31)=(x1(n+3)+x1(n))mod2;

[0209] x2(n+31)=(x2(n+3)+x2(n+2)+x2(n+1)+x2(n))mod2;

[0210] c(n) has a length of M, n = 0, ..., M-1, N c =1600, x1(0)=1, x1(n)=0, n=1,2,…,30. The initial value of x2(n) is c init =x2(0)·20+x2(1)·21+…+x2(30)·2 30 .

[0211] S2, PRS pilot sequence generation and time-frequency resource grid mapping;

[0212] The PRS pilot sequence is obtained by QPSK modulation of an arbitrarily long Gold code, where the length of the Gold code is twice the length of the pilot sequence.

[0213]

[0214]

[0215]

[0216]

[0217] m=0, 1, ...;

[0218]

[0219]

[0220] S3, PRS signal generation, performs fast Fourier transform (IFFT) on the pilot sequence on each symbol of the resource grid to obtain a time domain signal.

[0221] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0222] Example 2

[0223] In this embodiment, a positioning network networking signal sending device is also provided, which is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware of a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0224] Fig.14 is a block diagram of a network signal sending device of a positioning network according to an embodiment of the present application, such as Fig.14 As shown, it is applied to the IoT enhancement platform, including:

[0225] A determination module 142 is used to determine a networking mode of the positioning network according to an application scenario, wherein the networking mode includes independent networking of the positioning network and joint networking of the positioning network and a communication network;

[0226] The configuration module 144 is used to configure the positioning base station of the positioning network according to the networking method, or the positioning base station and the communication base station, wherein the positioning base station is used to send a positioning signal or the positioning signal and a synchronization signal, and the communication base station is used to send the synchronization signal.

[0227] Optionally, the configuration module 144 includes:

[0228] A first configuration unit is configured to configure the positioning signal resources, the positioning signal parameters and the synchronization signal parameters for the positioning base station if the networking mode is the independent networking of the positioning network, wherein the positioning base station is configured to generate the synchronization signal according to the synchronization signal parameters and send the synchronization signal on a predetermined resource; and to generate the positioning signal according to the positioning signal parameters and the positioning signal resources, and send the positioning signal on the positioning signal resources;

[0229] The second configuration unit is used to configure positioning signal resources for the positioning base station and the communication base station, and configure positioning signal parameters for the positioning base station if the networking mode is a joint networking of the positioning network and the communication network, wherein the communication base station is used to send the synchronization signal and does not send a signal on the configured positioning signal resources; the positioning base station is used to generate the positioning signal according to the positioning signal parameters and the positioning signal resources, and send the positioning signal on the positioning signal resources.

[0230] Optionally, the application scenarios include: a first scenario in which there are positioning requirements and communication requirements for the wireless network, and a second scenario in which there is only a positioning requirement for the wireless network.

[0231] Optionally, the determining module 142 includes:

[0232] A first determining unit, configured to determine, if the application scenario is the first scenario, that the networking mode is a joint networking of the positioning network and the communication network;

[0233] The second determining unit is configured to determine that the networking mode is the independent networking of the positioning network if the application scenario is the second scenario.

[0234] Optionally, the positioning signal resources include at least: a time-frequency mapping pattern, a transmission period, a number of resources for continuous transmission, a number of continuous transmissions, and a resource starting position.

[0235] Optionally, the positioning signal parameters include at least: a positioning signal ID, and a suffix type of a cyclic prefix CP.

[0236] Optionally, the synchronization signal parameters include at least: cell ID, bandwidth parameters, subcarrier spacing, and starting frequency position.

[0237] Optionally, the communication base station is a base station for sending wireless signals necessary for communication services;

[0238] The positioning base station is a base station that only sends wireless signals necessary for positioning.

[0239] It should be noted that the above modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.

[0240] Example 3

[0241] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when run.

[0242] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0243] S11, determining a networking mode of the positioning network according to an application scenario, wherein the networking mode includes independent networking of the positioning network and joint networking of the positioning network and a communication network;

[0244] S12, configuring the positioning base station of the positioning network according to the networking method, or configuring the positioning base station and the communication base station, wherein the positioning base station is used to send a positioning signal or the positioning signal and a synchronization signal, and the communication base station is used to send the synchronization signal.

[0245] Optionally, in this embodiment, the above-mentioned storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store computer programs.

[0246] Example 4

[0247] An embodiment of the present application further provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0248] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0249] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0250] S11, determining a networking mode of the positioning network according to an application scenario, wherein the networking mode includes independent networking of the positioning network and joint networking of the positioning network and a communication network;

[0251] S12, configuring the positioning base station of the positioning network according to the networking method, or configuring the positioning base station and the communication base station, wherein the positioning base station is used to send a positioning signal or the positioning signal and a synchronization signal, and the communication base station is used to send the synchronization signal.

[0252] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation modes, and this embodiment will not be described in detail here.

[0253] Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order from that herein, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0254] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for sending a positioning network signal, characterized in that: include: Determine a networking mode of the positioning network according to the application scenario, wherein the networking mode includes independent networking of the positioning network and joint networking of the positioning network and the communication network; The positioning base station of the positioning network, or the positioning base station and the communication base station are configured according to the networking mode, including: if the networking mode is independent networking of the positioning network, configuring the positioning base station with positioning signal resources, positioning signal parameters and synchronization signal parameters, wherein the positioning base station is used to generate the synchronization signal according to the synchronization signal parameters, and send the synchronization signal on pre-defined resources; and generate the positioning signal according to the positioning signal parameters and the positioning signal resources, and send the positioning signal on the positioning signal resources; if the networking mode is joint networking of the positioning network and the communication network, configuring the positioning base station and the communication base station with positioning signal resources, and configuring the positioning signal parameters for the positioning base station, wherein the communication base station is used to send the synchronization signal and does not send a signal on the configured positioning signal resources; the positioning base station is used to generate the positioning signal according to the positioning signal parameters and the positioning signal resources, and send the positioning signal on the positioning signal resources; The positioning base station is used to send a positioning signal or the positioning signal and a synchronization signal, and the communication base station is used to send the synchronization signal.

2. The method according to claim 1, characterized in that The application scenarios include: a first scenario in which there are positioning requirements and communication requirements for the wireless network, and a second scenario in which there is only a positioning requirement for the wireless network.

3. The method according to claim 2, characterized in that The networking mode of the positioning network is determined according to the application scenario, including: If the application scenario is the first scenario, determining that the networking mode is a joint networking of the positioning network and the communication network; If the application scenario is the second scenario, determine that the networking mode is independent networking of the positioning network.

4. The method according to claim 1, characterized in that: The positioning signal resources include at least: a time-frequency mapping pattern, a transmission period, the number of resources transmitted continuously, the number of continuous transmissions, and a resource starting position.

5. The method according to claim 1, characterized in that The positioning signal parameters include at least: a positioning signal ID and a suffix type of a cyclic prefix CP.

6. The method according to claim 1, characterized in that The synchronization signal parameters include at least: cell CELLID, bandwidth parameters, subcarrier spacing, and starting frequency position.

7. The method according to any one of claims 1 to 6, characterized in that The communication base station is a base station for sending wireless signals necessary for communication services; The positioning base station is a base station that only sends wireless signals necessary for positioning.

8. A positioning network signal sending device, characterized in that: include: A determination module, used to determine a networking mode of the positioning network according to an application scenario, wherein the networking mode includes independent networking of the positioning network and joint networking of the positioning network and a communication network; A configuration module, configured to configure the positioning base station of the positioning network, or the positioning base station and the communication base station according to the networking mode, including: if the networking mode is independent networking of the positioning network, configuring the positioning base station with positioning signal resources, positioning signal parameters and synchronization signal parameters, wherein the positioning base station is used to generate the synchronization signal according to the synchronization signal parameters and send the synchronization signal on pre-defined resources; and generating the positioning signal according to the positioning signal parameters and the positioning signal resources, and sending the positioning signal on the positioning signal resources; if the networking mode is joint networking of the positioning network and the communication network, configuring the positioning base station and the communication base station with positioning signal resources, and configuring the positioning signal parameters for the positioning base station, wherein the communication base station is used to send the synchronization signal and not send a signal on the configured positioning signal resources; the positioning base station is used to generate the positioning signal according to the positioning signal parameters and the positioning signal resources, and send the positioning signal on the positioning signal resources; wherein the positioning base station is used to send the positioning signal or the positioning signal and the synchronization signal, and the communication base station is used to send the synchronization signal.

9. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, wherein the computer program is configured to execute the method according to any one of claims 1 to 7 when executed.

10. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to run the computer program to perform the method according to any one of claims 1 to 7.

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