CN112566010A - Signal sending and receiving method, network equipment and terminal equipment - Google Patents

Signal sending and receiving method, network equipment and terminal equipment Download PDF

Info

Publication number
CN112566010A
CN112566010A CN201910917631.2A CN201910917631A CN112566010A CN 112566010 A CN112566010 A CN 112566010A CN 201910917631 A CN201910917631 A CN 201910917631A CN 112566010 A CN112566010 A CN 112566010A
Authority
CN
China
Prior art keywords
sprs
occupied
signal
parameter set
frequency domain
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910917631.2A
Other languages
Chinese (zh)
Other versions
CN112566010B (en
Inventor
于大飞
任斌
达人
李刚
李沛
郑占旗
张振宇
孙韶辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Datang Mobile Communications Equipment Co Ltd
Original Assignee
Datang Mobile Communications Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Datang Mobile Communications Equipment Co Ltd filed Critical Datang Mobile Communications Equipment Co Ltd
Priority to CN201910917631.2A priority Critical patent/CN112566010B/en
Publication of CN112566010A publication Critical patent/CN112566010A/en
Application granted granted Critical
Publication of CN112566010B publication Critical patent/CN112566010B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Abstract

The invention provides a signal sending and receiving method, network equipment and terminal equipment, wherein the sending method comprises the following steps: configuring an SPRS parameter set, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS; configuring the SPRS according to the SPRS parameter set; the method for sending the SPRS parameter set and the SPRS to the terminal equipment comprises the following steps: receiving at least two network equipment sending number SPRS parameter sets; acquiring the position information of the subcarrier occupied by the SPRS according to the SPRS parameter set; and receiving the SPRS sent by the network equipment according to the position information of the subcarrier occupied by the SPRS. According to the invention, on the premise of not additionally adding hardware resources, the SPRS can be obtained through the SPRS parameter set, and then the carrier phase tracking can be completed according to the SPRS, so that the positioning accuracy of the terminal is effectively improved.

Description

Signal sending and receiving method, network equipment and terminal equipment
Technical Field
The present invention relates to the field of communication application technologies, and in particular, to a signal sending method, a signal receiving method, a network device, and a terminal device.
Background
A variety of User Equipment (UE) positioning methods have been defined in the third generation mobile communication partnership project (3 GPP). The positioning method includes an observed time difference of arrival (OTDOA) positioning method, an Enhanced-Cell Identification (E-CID) positioning method, an Uplink time difference of arrival (UTDOA) positioning method, and the like. The main advantage of these methods is that the UE position can be determined by measuring the own reference signals of the wireless communication network, and can operate in an environment where no reference signals outside the network (e.g., Global Navigation Satellite System (GNSS) satellite signals) are received. However, the common problem of these positioning methods is that positioning is performed by using the self-reference signal, which has low accuracy, and high-accuracy positioning cannot be performed, and it is difficult to meet the high-accuracy positioning requirement that the fifth-Generation mobile communication technology (5th-Generation, 5G) defined by 3GPP TS 22.261 should support. In addition, although the conventional carrier phase terminal positioning method based on the 5G system can provide positioning accuracy, it places sinusoidal carrier positioning reference signals (SPRS) at the transition band or the band edge, and although it does not occupy band resources or occupies less band resources, it needs to add hardware resources to both the base station side and the terminal side to perform independent transmission and reception processing on the SPRS signals.
Disclosure of Invention
The invention aims to provide a signal sending and receiving method, network equipment and terminal equipment, which are used for solving the problem of improving the positioning accuracy of a terminal on the premise of not increasing additional hardware resources.
In order to achieve the above object, an embodiment of the present invention provides a signal sending method, applied to a network device, including:
configuring a sinusoidal carrier positioning reference signal (SPRS) parameter set, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
configuring the SPRS according to the SPRS parameter set;
and sending the SPRS parameter set and the SPRS to terminal equipment.
Wherein the SPRS parameter set further includes a time domain interval of an Orthogonal Frequency Division Multiplexing (OFDM) symbol occupied by the SPRS.
Sending the SPRS parameter set to a terminal device, including:
and sending the SPRS parameter set to terminal equipment through broadcast signaling, Downlink Control Information (DCI) signaling or positioning special signaling.
The number of the subcarriers occupied by the SPRS is at least two, and the subcarriers occupied by the SPRS configured by different network equipment are mutually orthogonal on a frequency domain.
The configuring of the frequency domain position of the subcarrier occupied by the SPRS in the set of parameters of the sinusoidal carrier positioning reference signal SPRS includes:
by the formula
Figure BDA0002216656580000021
Determining a frequency domain position k of a subcarrier occupied by the SPRS;
wherein the content of the first and second substances,
Figure BDA0002216656580000022
and l1Is an integer,. DELTA.NCPIs DeltaTcpPresetting the number of sampling points in an OFDM baseband model in time, wherein N is TsymNumber of samples in time, TsymPresetting time, delta T, corresponding to OFDM symbols without cyclic prefix CP in OFDM baseband modelcpIn a communication systemAnd K is the number of subcarriers occupied by the signal bandwidth in the communication system.
The configuring of the frequency domain position of the subcarrier occupied by the SPRS in the set of parameters of the sinusoidal carrier positioning reference signal SPRS includes:
when the frequency domain discrete signal of each subcarrier in the communication system is an equally-spaced signal and the frequency domain signal of each subcarrier in the communication system is a phase continuous signal, the frequency domain position of the subcarrier occupied by the SPRS is configured to be k ═ l2，0≤l2Not more than K, and2is an integer, and K is the number of subcarriers occupied by the signal bandwidth in the communication system.
The method for configuring the signal format of the SPRS in the SPRS parameter set of the sinusoidal carrier positioning reference signal includes:
the SPRS is configured as a constant phase, constant amplitude, complex-valued signal or a real signal.
The configuring of the time domain interval of the OFDM symbol occupied by the SPRS in the set of parameters of the sinusoidal carrier positioning reference signal SPRS includes:
and configuring the time domain interval of the OFDM symbols occupied by the SPRS to be zero or a preset interval.
In order to achieve the above object, an embodiment of the present invention further provides a signal receiving method, applied to a terminal device, including:
receiving a sinusoidal carrier positioning reference signal (SPRS) parameter set sent by at least two network devices, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
acquiring the position information of the subcarrier occupied by the SPRS according to the SPRS parameter set;
and receiving the SPRS sent by the network equipment according to the position information of the subcarrier occupied by the SPRS.
Wherein the set of SPRS parameters further includes a time domain interval of the OFDM symbol occupied by the SPRS.
The receiving of the set of parameters of the sinusoidal carrier positioning reference signals SPRS sent by at least two network devices includes:
and receiving the SPRS parameter set sent by the network equipment through broadcast signaling, Downlink Control Information (DCI) signaling or positioning special signaling.
The SPRS comprises a time domain signal corresponding to the SPRS or a frequency domain signal corresponding to the SPRS.
Wherein, after receiving the SPRS sent by the network device according to the position information of the subcarrier occupied by the SPRS, the method further includes:
and carrying out carrier phase tracking processing according to the time domain signal or the frequency domain signal corresponding to the SPRS.
Wherein, the receiving the SPRS sent by the network device according to the position information of the subcarrier occupied by the SPRS includes:
acquiring a baseband signal sent by the network equipment according to the network configuration parameter information;
acquiring the frequency of each subcarrier occupied by the SPRS under the baseband signal according to the SPRS parameter set sent by the network equipment;
and carrying out frequency conversion filtering processing on the SPRS on the subcarrier of the frequency to obtain a time domain signal of the SPRS.
Receiving the SPRS sent by the network device according to the position information of the subcarriers occupied by the SPRS includes:
presetting downlink signals sent by network equipment according to the position information of the subcarriers occupied by the SPRS to obtain frequency domain position information of the subcarriers;
and acquiring a frequency domain signal corresponding to the SPRS from the frequency domain position information of the subcarrier according to the SPRS parameter set.
In order to achieve the above object, an embodiment of the present invention further provides a network device, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, the processor implementing the steps when executing the program of:
configuring a sinusoidal carrier positioning reference signal (SPRS) parameter set, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
configuring the SPRS according to the SPRS parameter set;
and sending the SPRS parameter set and the SPRS to terminal equipment through a transceiver.
Wherein the SPRS parameter set further includes a time domain interval of an Orthogonal Frequency Division Multiplexing (OFDM) symbol occupied by the SPRS.
Wherein the processor executing the program for transmitting the set of SPRS parameters to the terminal device comprises:
and sending the SPRS parameter set to terminal equipment through broadcast signaling, Downlink Control Information (DCI) signaling or positioning special signaling.
The number of the subcarriers occupied by the SPRS is at least two, and the subcarriers occupied by the SPRS configured by different network equipment are mutually orthogonal on a frequency domain.
Wherein the processor executes a procedure for configuring the frequency domain positions of the subcarriers occupied by the SPRS in the set of sinusoidal carrier positioning reference signal SPRS parameters, comprising:
by the formula
Figure BDA0002216656580000041
Determining a frequency domain position k of a subcarrier occupied by the SPRS;
wherein the content of the first and second substances,
Figure BDA0002216656580000042
and l1Is an integer,. DELTA.NCPIs DeltaTcpPresetting the number of sampling points in an OFDM baseband model in time, wherein N is TsymNumber of samples in time, TsymPresetting time, delta T, corresponding to OFDM symbols without cyclic prefix CP in OFDM baseband modelcpAnd K is the difference value of the time occupied by the first preset cyclic prefix CP and the time occupied by the second preset CP in the communication system, and the number of the subcarriers occupied by the signal bandwidth in the communication system.
Wherein the step of executing the program for configuring the frequency domain position of the sub-carrier occupied by the SPRS in the set of parameters of the sinusoidal carrier positioning reference signal SPRS by the processor comprises:
when the frequency domain discrete signal of each subcarrier in the communication system is an equally-spaced signal and the frequency domain signal of each subcarrier in the communication system is a phase continuous signal, the frequency domain position of the subcarrier occupied by the SPRS is configured to be k ═ l2，0≤l2Not more than K, and2is an integer, and K is the number of subcarriers occupied by the signal bandwidth in the communication system.
Wherein the step of executing the program for configuring the signal format of the SPRS in the set of sinusoidal carrier positioning reference signal SPRS parameters by the processor comprises:
the SPRS is configured as a constant phase, constant amplitude, complex-valued signal or a real signal.
Wherein, the step of executing the program for configuring the time domain interval of the OFDM symbol occupied by the SPRS in the set of parameters of the sinusoidal carrier positioning reference signal SPRS by the processor comprises:
and configuring the time domain interval of the OFDM symbols occupied by the SPRS to be zero or a preset interval.
In order to achieve the above object, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of the signal transmission method as described above.
In order to achieve the above object, an embodiment of the present invention further provides a terminal device, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, the processor implementing the steps when executing the program of:
receiving a sinusoidal carrier positioning reference signal (SPRS) parameter set sent by at least two network devices through a transceiver, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
acquiring the position information of the subcarrier occupied by the SPRS according to the SPRS parameter set;
and receiving the SPRS sent by the network equipment through the transceiver according to the position information of the subcarrier occupied by the SPRS.
Wherein the set of SPRS parameters further includes a time domain interval of the OFDM symbol occupied by the SPRS.
Wherein the step of the processor executing the program for receiving the set of sinusoidal carrier positioning reference signal (SPRS) parameters transmitted by at least two network devices comprises:
and receiving the SPRS parameter set sent by the network equipment through broadcast signaling, Downlink Control Information (DCI) signaling or positioning special signaling.
The SPRS comprises a time domain signal corresponding to the SPRS or a frequency domain signal corresponding to the SPRS.
Wherein, after the processor executes the step of receiving the program after the SPRS sent by the network device according to the position information of the sub-carrier occupied by the SPRS, the processor is further configured to execute the following steps:
and carrying out carrier phase tracking processing according to the time domain signal or the frequency domain signal corresponding to the SPRS.
Wherein, the step of the processor executing the program for receiving the SPRS sent by the network device according to the position information of the sub-carrier occupied by the SPRS comprises:
acquiring a baseband signal sent by the network equipment according to the network configuration parameter information;
acquiring the frequency of each subcarrier occupied by the SPRS under the baseband signal according to the SPRS parameter set sent by the network equipment;
and carrying out frequency conversion filtering processing on the SPRS on the subcarrier of the frequency to obtain a time domain signal of the SPRS.
Wherein, the step of the processor executing the program for receiving the SPRS sent by the network device according to the position information of the sub-carrier occupied by the SPRS comprises:
presetting downlink signals sent by network equipment according to the position information of the subcarriers occupied by the SPRS to obtain frequency domain position information of the subcarriers;
and acquiring a frequency domain signal corresponding to the SPRS from the frequency domain position information of the subcarrier according to the SPRS parameter set.
In order to achieve the above object, an embodiment of the present invention further provides a network device, including:
the device comprises a first configuration module, a second configuration module and a third configuration module, wherein the first configuration module is used for configuring a sinusoidal carrier positioning reference signal (SPRS) parameter set, and the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
the second configuration module is used for configuring the SPRS according to the SPRS parameter set;
and the sending module is used for sending the SPRS parameter set and the SPRS to terminal equipment.
In order to achieve the above object, an embodiment of the present invention further provides a terminal device, including:
the first receiving module is used for receiving a sinusoidal carrier positioning reference signal (SPRS) parameter set sent by at least two network devices, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
an obtaining module, configured to obtain, according to the SPRS parameter set, position information of subcarriers occupied by SPRS;
and the second receiving module is used for receiving the SPRS sent by the network equipment according to the position information of the subcarrier occupied by the SPRS.
The embodiment of the invention has the following beneficial effects:
according to the technical scheme of the embodiment of the invention, a sinusoidal carrier positioning reference signal (SPRS) parameter set is configured; configuring the SPRS according to the SPRS parameter set; the SPRS parameter set and the SPRS are sent to the terminal equipment, so that the terminal equipment receives the SPRS according to the SPRS parameter set, and then carries out carrier phase tracking processing according to the SPRS.
Drawings
Fig. 1 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating the transmission of base station signals according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a time-frequency configuration according to an embodiment of the present invention;
FIG. 4 is a second schematic diagram of time-frequency allocation according to the embodiment of the present invention;
fig. 5 is a schematic flowchart of a signal receiving method according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a receiving process of a signal receiving method according to an embodiment of the present invention;
fig. 7 is a second schematic diagram of a receiving process of a signal receiving method according to an embodiment of the present invention;
FIG. 8 is a block diagram of a network device according to an embodiment of the present invention;
FIG. 9 is a block diagram of a network device according to an embodiment of the present invention;
fig. 10 is a block diagram of a terminal device in the embodiment of the present invention;
fig. 11 is a schematic block diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged where appropriate. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. In the description and in the claims "and/or" means at least one of the connected objects.
The following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
In order to make the embodiment of the present invention more understandable to those skilled in the art, a UE positioning system based on wireless communication carrier phase measurement is first described as follows.
(1) In the system, in addition to sending conventional Positioning Reference Signals (PRS) in each Cell (Cell), each Cell sends sinusoidal carrier positioning reference signals (SPRS) for carrier phase positioning at a pre-configured or pre-defined carrier frequency. The adjacent different cells send SPRS in different subcarriers;
(2) meanwhile, the network will provide the UE with the related PRS and SPRS configuration information at the same time. The 3GPP has defined methods of providing PRS configuration information, namely 3GPP LTE Positioning Protocol (LPP) (TS 36.355) and positioning protocol a (lppa). Providing the SPRS configuration information may be accomplished by extending the current 3GPP LTE Positioning Protocol (LPP) (TS 36.355) and positioning protocol a (lppa). The information related to the SPRS configuration comprises frequency and time resource configuration of SPRS transmitted by each adjacent cell;
(3) the UE measures the PRS and the SPRS according to the PRS and SPRS configuration information of each adjacent cell provided by the network;
(4) the UE provides positioning measurements measured by the PRS, such as a reference signal time difference of arrival (RSTD), a received power (RSRP) of the reference signal, and a carrier phase measurement (SPRS carrier phase, SPRS-CP) measured by the SPRS;
(5) the UE reports the positioning measurements of the positioning measurements (RSTD, RSRP, SPRS-CP) to a positioning server in the wireless communication network. And the positioning server determines the position of the UE with high precision according to the PRS and SPRS configuration information, the positions of the transmitting antennas of each cell and the positioning measurement value provided by the UE. The location server may be located at a base station of the wireless communication network.
Based on the above description, as shown in fig. 1, an embodiment of the present invention provides a signal sending method, which is applied to a network device, where the network device may specifically be a base station, and the signal sending method includes:
step 101: and configuring a sinusoidal carrier positioning reference signal (SPRS) parameter set, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS.
Optionally, the SPRS parameter set further includes a time domain interval of an orthogonal frequency division multiplexing OFDM symbol occupied by the SPRS.
Here, the configuration of the SPRS parameter set is facilitated by configuring the SPRS parameter set, so that the terminal device performs carrier phase tracking processing according to the SPRS.
Step 102: and configuring the SPRS according to the SPRS parameter set.
In the process flow of communication signals, such as 5G signals, a base station signal transmitting end mainly comprises functional modules of data generation, resource mapping, inverse fast fourier transform IFFT, cyclic prefix CP addition, digital-to-analog converter DAC, up-conversion and the like, wherein the data generation function mainly performs blocking, scrambling and modulation processing on data, the resource mapping function performs layer mapping and resource element RE resource mapping processing on data, the IFFT function performs fast fourier transform on data to generate OFDM symbol data, the CP addition function performs cyclic prefix addition processing on OFDM symbols, and the DAC and up-conversion function converts digital signals into analog signals and performs up-conversion processing on the analog signals, and finally, the transmission of signals is completed through an antenna.
However, if the signal sent by the base station can be used for high-precision positioning, a function module for configuring the SPRS parameter set needs to be added, as shown in fig. 2, the function module mainly configures the subcarrier signal as the SPRS, and after the configuration is completed, the network needs to notify the UE side of the configuration information (SPRS parameter set) of the SPRS.
Step 103: and sending the SPRS parameter set and the SPRS to terminal equipment.
And sending the SPRS parameter set and the SPRS to terminal equipment so that the terminal equipment receives the SPRS according to the SPRS parameter set and further performs carrier phase tracking processing according to the SPRS.
The signal transmission method of the embodiment of the invention is characterized in that a sinusoidal carrier positioning reference signal (SPRS) parameter set is configured; configuring the SPRS according to the SPRS parameter set; the SPRS parameter set and the SPRS are sent to the terminal equipment, so that the terminal equipment receives the SPRS according to the SPRS parameter set, and then carries out carrier phase tracking processing according to the SPRS.
Further, the sending the SPRS parameter set to the terminal device includes:
and sending the SPRS parameter set to terminal equipment through broadcast signaling, Downlink Control Information (DCI) signaling or positioning special signaling.
Further, the number of subcarriers occupied by the SPRS is at least two, and the subcarriers occupied by the SPRS configured by different network devices are orthogonal to each other in the frequency domain.
In an embodiment of the present invention, the number of subcarriers occupied by the SPRS configured by each network device is at least two, for example, the number of subcarriers occupied by the SPRS is configured to be 4. In addition, the number of subcarriers occupied by the SPRS may be configured in a manner predefined by network configuration and protocol.
Further, as an optional implementation manner, configuring the frequency domain position of the subcarrier occupied by the SPRS in the set of parameters of the SPRS for the sinusoidal carrier positioning reference signal includes:
by the formula
Figure BDA0002216656580000101
Determining a frequency domain position k of a subcarrier occupied by the SPRS;
wherein the content of the first and second substances,
Figure BDA0002216656580000102
and l1Is an integer,. DELTA.NCPIs DeltaTcpPresetting the number of sampling points in an OFDM baseband model in time, wherein N is TsymNumber of samples in time, TsymPresetting time, delta T, corresponding to OFDM symbols without cyclic prefix CP in OFDM baseband modelcpAnd K is the difference value of the time occupied by the first preset cyclic prefix CP and the time occupied by the second preset CP in the communication system, and the number of the subcarriers occupied by the signal bandwidth in the communication system.
In a specific embodiment of the present invention, the preset OFDM baseband model (baseband model of conventional OFDM) can be represented by formula (1):
formula (1):
Figure BDA0002216656580000103
wherein K is the number of actually used subcarriers, and N is at TsymNumber of samples in time, TsymPresetting the time, S, corresponding to the OFDM symbol without the cyclic prefix CP in the OFDM baseband modelOFDMThe value of each sampling point is indicated.
It should be noted that the preset OFDM baseband model is an existing baseband model, and will not be described in detail here.
Based on the base band signal model of the conventional OFDM and the phase keeping continuity criterion of the OFDM symbol after adding the CP, when the OFDM is modulated, the phase is continuous on a certain subcarrier, and the phase needs to be ensured to be Ts'ymIncluding an integer number of 2 pi phase periods in time, and due to TsymThe phase of the carrier wave contained in the time is integral multiple of 2 pi, so that only T is ensuredcpThe carrier phase contained in the time also meets the integral multiple of 2 pi; and TcpComprising two sampling time lengths (T)cp1Or Tcp2) Taking the 5G system as an example,
Figure BDA0002216656580000111
therefore, only Δ T needs to be measured on a certain subcarriercpThe phase included in the sampling point time is integer multiples of 2 & 2 pi, so that the condition can be met, and the formula (2) can be expressed:
Figure BDA0002216656580000112
0≤l≤K，ΔNcp＝64，N＝4096。
wherein T iss'ymFor OFDM symbol time after CP addition, TcpTime occupied by CP, Δ TcpDifference in time length occupied by two CPs, Δ NcpIs DeltaTcpNumber of samples in time.
Therefore, according to the above criteria (formula 2) and model (formula 1), the subcarrier frequency domain position of the SPRS may be configured to be k 128 × l1Wherein, in the step (A),
Figure BDA0002216656580000113
k is the number of subcarriers actually used, and as shown in fig. 3, K is 513.
The configuration method ensures the continuity of the phase on a certain subcarrier during OFDM modulation, thereby ensuring the accuracy of the final carrier phase measurement.
Further, as another optional implementation manner, configuring the frequency domain position of the subcarrier occupied by the SPRS in the sinusoidal carrier positioning reference signal SPRS parameter set includes:
when the frequency domain discrete signal of each subcarrier in the communication system is an equally-spaced signal and the frequency domain signal of each subcarrier in the communication system is a phase continuous signal, the frequency domain position of the subcarrier occupied by the SPRS is configured to be k ═ l2，0≤l2Not more than K, and2is an integer, and K is the number of subcarriers occupied by the signal bandwidth in the communication system.
The communication system in the embodiment of the present invention may be specifically a 5G communication system, the frequency domain discrete signal of each subcarrier in the communication system is an equally spaced signal (ignoring the difference in CP length), and the frequency domain of each subcarrier in the communication systemIn the case where all the signals are phase-continuous signals, according to the conventional OFDM baseband signal model shown in formula (1), as shown in fig. 4, the frequency domain position of the subcarrier occupied by the SPRS is configured to be k ═ l2，0≤l2Not more than K, and2is an integer, that is, the frequency domain position of the subcarrier occupied by the SPRS is configured as an arbitrary position.
Further, configuring a signal format of the SPRS in the set of parameters of the sinusoidal carrier positioning reference signal SPRS, including:
the SPRS is configured as a constant phase, constant amplitude, complex-valued signal or a real signal.
For example, Ik+jQ k1+ j · 0, where k is the frequency domain position occupied by the configured SPRS subcarrier.
Further, configuring a time domain interval of an OFDM symbol occupied by an SPRS in a sinusoidal carrier positioning reference signal SPRS parameter set, includes:
and configuring the time domain interval of the OFDM symbols occupied by the SPRS to be zero or a preset interval.
Here, the preset interval is a numerical value other than 0. In the embodiment of the invention, the OFDM symbols occupied by the SPRS are configured to be occupied continuously or at equal intervals, and the interval size is configured by combining the requirement of positioning precision, and is typically configured to be occupied continuously, namely the interval is zero.
According to the signal transmission method provided by the embodiment of the invention, the SPRS can be designed on any subcarrier, and on the premise of not destroying orthogonality among subcarrier signals and ensuring continuity of signal phases of the subcarrier signals, although the SPRS occupies spectrum resources in a limited band, hardware resources are not required to be additionally added, carrier phase tracking can be completed on the subcarrier SPRS, so that a carrier phase measurement value obtained by measuring a phase difference between a received carrier reference signal and a carrier signal generated at a receiver is obtained. Since the measurement error of the carrier phase measurement can be on the order of centimeters or less, the position of the terminal can be determined with high accuracy by using the carrier signal phase measurement in combination with other existing positioning methods.
As shown in fig. 5, an embodiment of the present invention further provides a signal receiving method, which is applied to a terminal device, and the method includes:
step 501: receiving a sinusoidal carrier positioning reference signal (SPRS) parameter set sent by at least two network devices, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS.
Specifically, the four network devices may send the SPRS parameter set to the terminal device, so that the terminal device performs carrier phase tracking processing according to the SPRS parameter set sent by the four network devices.
Further, the set of SPRS parameters also includes a time domain interval of the OFDM symbol occupied by the SPRS.
The set of SPRS parameters sent by the network device may be received through broadcast signaling, downlink control information DCI signaling, or positioning dedicated signaling.
Step 502: and acquiring the position information of the subcarrier occupied by the SPRS according to the SPRS parameter set.
Step 503: and receiving the SPRS sent by the network equipment according to the position information of the subcarrier occupied by the SPRS.
The SPRS sent by each network device includes a time domain signal corresponding to the SPRS or a frequency domain signal corresponding to the SPRS.
The signal receiving method of the embodiment of the invention receives a sinusoidal carrier positioning reference signal (SPRS) parameter set sent by at least two network devices; acquiring the position information of the subcarrier occupied by the SPRS according to the SPRS parameter set; and receiving the SPRS sent by the network equipment according to the position information of the sub-carrier occupied by the SPRS, and further carrying out carrier phase tracking processing according to the SPRS. According to the embodiment of the invention, on the premise of not additionally adding hardware resources, the SPRS can be obtained through the SPRS parameter set, and then the carrier phase tracking can be completed according to the SPRS, so that the positioning precision of the terminal is effectively improved.
Further, after receiving the SPRS sent by the network device according to the location information of the subcarriers occupied by the SPRS, the method further includes:
and carrying out carrier phase tracking processing according to the time domain signal or the frequency domain signal corresponding to the SPRS.
Embodiments of the present invention perform carrier phase tracking according to the SPRS to obtain a carrier phase measurement value obtained by measuring a phase difference between a received carrier reference signal and a carrier signal generated at a receiver. Since the measurement error of the carrier phase measurement can be on the order of centimeters or less, the position of the terminal can be determined with high accuracy by using the carrier signal phase measurement in combination with other existing positioning methods.
Further, the receiving, according to the location information of the subcarrier occupied by the SPRS, the SPRS sent by the network device includes:
acquiring a baseband signal sent by the network equipment according to the network configuration parameter information;
acquiring the frequency of each subcarrier occupied by the SPRS under the baseband signal according to the SPRS parameter set sent by the network equipment;
and carrying out frequency conversion filtering processing on the SPRS on the subcarrier of the frequency to obtain a time domain signal of the SPRS.
Specifically, for each subcarrier, according to the frequency of the SPRS on the subcarrier under the baseband signal, the SPRS on the subcarrier is subjected to frequency conversion filtering processing, so as to obtain a time domain signal of the SPRS.
As shown in fig. 6, according to the network configuration parameter information, the network configuration parameter information may specifically include the down-conversion center frequency fC' after the terminal device is processed by the antenna, down-conversion and ADC, the baseband signal sent by the network device is obtained, and then the SPRS parameter set and down-conversion center frequency f sent by each network device are obtainedC' and ADC sampling rate fsAnd acquiring the frequency of each subcarrier occupied by the SPRS under the baseband signal. For example, if four network devices are included, the frequency of each subcarrier occupied by SPRS under the baseband signal is obtained as
Figure BDA0002216656580000141
n represents the number of sub-carriers occupied by the SPRS configured by each network device.
Figure BDA0002216656580000142
Representing the frequency of the first sub-carrier occupied by the SPRS in the first network device,
Figure BDA0002216656580000143
representing the frequency of the nth subcarrier occupied by the SPRS in the first network device,
Figure BDA0002216656580000144
denoted as the frequency of the nth subcarrier occupied by the SPRS in the fourth network device. Then, the SPRS on the subcarrier of the frequency is subjected to frequency conversion filtering processing to obtain a time domain signal of the SPRS (time domain data of the subcarrier occupied by the SPRS), and finally phase tracking is carried out.
Further, receiving the SPRS sent by the network device according to the location information of the subcarriers occupied by the SPRS includes:
presetting downlink signals sent by network equipment according to the position information of the subcarriers occupied by the SPRS to obtain frequency domain position information of the subcarriers;
and acquiring a frequency domain signal corresponding to the SPRS from the frequency domain position information of the subcarrier according to the SPRS parameter set.
The preset processing comprises down-conversion, ADC, CP removal and FFT processing after passing through a receiving antenna.
As shown in fig. 7, the UE processes the signal according to the existing receiving process, which mainly includes down-conversion after the signal passes through the receiving antenna, ADC, CP removal and FFT processing, and then obtains the frequency domain signal of the SPRS (frequency domain data of the subcarrier occupied by the SPRS) according to the SPRS parameter set of each network device, and performs carrier phase tracking processing on the frequency domain signal.
The signal receiving method of the embodiment of the invention receives a sinusoidal carrier positioning reference signal (SPRS) parameter set sent by at least two network devices; acquiring the position information of the subcarrier occupied by the SPRS according to the SPRS parameter set; and receiving the SPRS sent by the network equipment according to the position information of the sub-carrier occupied by the SPRS, and further carrying out carrier phase tracking processing according to the SPRS. According to the embodiment of the invention, on the premise of not additionally adding hardware resources, the SPRS can be obtained through the SPRS parameter set, and then the carrier phase tracking can be completed according to the SPRS, so that the positioning precision of the terminal is effectively improved.
As shown in fig. 8, an embodiment of the present invention further provides a network device, which may be specifically a base station, and includes a memory 820, a processor 800, a transceiver 810, a bus interface, and a computer program stored in the memory 820 and executable on the processor 800, where the processor 800 is configured to read a program in the memory 820 and execute the following processes:
configuring a sinusoidal carrier positioning reference signal (SPRS) parameter set, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
configuring the SPRS according to the SPRS parameter set;
and sending the SPRS parameter set and the SPRS to terminal equipment through a transceiver.
Where in fig. 8, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 800 and memory represented by memory 820. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 810 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.
Optionally, the SPRS parameter set further includes a time domain interval of an orthogonal frequency division multiplexing OFDM symbol occupied by the SPRS.
Optionally, the step of executing the program for sending the set of SPRS parameters to the terminal device by the processor 800 includes:
and sending the SPRS parameter set to terminal equipment through broadcast signaling, Downlink Control Information (DCI) signaling or positioning special signaling.
Optionally, the number of subcarriers occupied by the SPRS is at least two, and the subcarriers occupied by the SPRS configured by different network devices are orthogonal to each other in the frequency domain.
Optionally, the processor 800 executes a procedure of configuring a frequency domain position of a subcarrier occupied by an SPRS in a sinusoidal carrier positioning reference signal SPRS parameter set, where the procedure includes:
by the formula
Figure BDA0002216656580000151
Determining a frequency domain position k of a subcarrier occupied by the SPRS;
wherein the content of the first and second substances,
Figure BDA0002216656580000152
and l1Is an integer,. DELTA.NCPIs DeltaTcpPresetting the number of sampling points in an OFDM baseband model in time, wherein N is TsymNumber of samples in time, TsymPresetting time, delta T, corresponding to OFDM symbols without cyclic prefix CP in OFDM baseband modelcpAnd K is the difference value of the time occupied by the first preset cyclic prefix CP and the time occupied by the second preset CP in the communication system, and the number of the subcarriers occupied by the signal bandwidth in the communication system.
Optionally, the step of executing the program for configuring the frequency domain position of the subcarrier occupied by the SPRS in the set of parameters of the sinusoidal carrier positioning reference signal SPRS by the processor 800 includes:
when the frequency domain discrete signal of each subcarrier in the communication system is an equally-spaced signal and the frequency domain signal of each subcarrier in the communication system is a phase continuous signal, the frequency domain position of the subcarrier occupied by the SPRS is configured to be k ═ l2，0≤l2Not more than K, and2is an integer, and K is the number of subcarriers occupied by the signal bandwidth in the communication system.
Optionally, the step of executing the program for configuring the signal format of the SPRS in the set of parameters of the sinusoidal carrier positioning reference signal SPRS by the processor 800 includes:
the SPRS is configured as a constant phase, constant amplitude, complex-valued signal or a real signal.
Optionally, the step of executing the program for configuring the time domain interval of the OFDM symbol occupied by the SPRS in the set of parameters of the sinusoidal carrier positioning reference signal SPRS by the processor 800 includes:
and configuring the time domain interval of the OFDM symbols occupied by the SPRS to be zero or a preset interval.
The network equipment of the embodiment of the invention configures a sinusoidal carrier positioning reference signal (SPRS) parameter set; configuring the SPRS according to the SPRS parameter set; the SPRS parameter set and the SPRS are sent to the terminal equipment, so that the terminal equipment receives the SPRS according to the SPRS parameter set, and then carries out carrier phase tracking processing according to the SPRS.
The network device of the embodiment of the present invention can implement all the implementation manners in the above-mentioned signal transmission method embodiment applied to the network device side, and can achieve the same technical effect, and for avoiding repetition, details are not described here again.
In some embodiments of the invention, there is also provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
configuring a sinusoidal carrier positioning reference signal (SPRS) parameter set, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
configuring the SPRS according to the SPRS parameter set;
and sending the SPRS parameter set and the SPRS to terminal equipment.
When executed by the processor, the program can implement all implementation manners in the above-described signal transmission method embodiment applied to the network device side, and can achieve the same technical effect, and for avoiding repetition, details are not described here again.
As shown in fig. 9, an embodiment of the present invention further provides a network device, including:
a first configuration module 901, configured to configure a sinusoidal carrier positioning reference signal SPRS parameter set, where the SPRS parameter set includes the number of subcarriers occupied by SPRS, the frequency domain position of the subcarriers occupied by SPRS, and the signal format of SPRS;
a second configuring module 902, configured to configure an SPRS according to the SPRS parameter set;
a sending module 903, configured to send the SPRS parameter set and the SPRS to a terminal device.
In the network device of the embodiment of the present invention, the SPRS parameter set further includes a time domain interval of an orthogonal frequency division multiplexing OFDM symbol occupied by the SPRS.
In the network device of the embodiment of the present invention, the sending module is configured to send the SPRS parameter set to the terminal device through a broadcast signaling, a downlink control information DCI signaling, or a positioning dedicated signaling.
In the network device of the embodiment of the present invention, the number of the subcarriers occupied by the SPRS is at least two, and the subcarriers occupied by the SPRS configured by different network devices are orthogonal to each other in the frequency domain.
In the network device of the embodiment of the present invention, the first configuration module is configured to use a formula
Figure BDA0002216656580000171
Determining a frequency domain position k of a subcarrier occupied by the SPRS;
wherein the content of the first and second substances,
Figure BDA0002216656580000172
and l1Is an integer,. DELTA.NCPIs DeltaTcpPresetting the number of sampling points in an OFDM baseband model in time, wherein N is TsymNumber of samples in time, TsymPresetting time, delta T, corresponding to OFDM symbols without cyclic prefix CP in OFDM baseband modelcpAnd K is the difference value of the time occupied by the first preset cyclic prefix CP and the time occupied by the second preset CP in the communication system, and the number of the subcarriers occupied by the signal bandwidth in the communication system.
In the network device according to the embodiment of the present invention, the first configuration module is configured to configure the frequency domain position of the subcarrier occupied by the SPRS as k ═ l, when the frequency domain discrete signal of each subcarrier in the communication system is an equally spaced signal and the frequency domain signal of each subcarrier in the communication system is a phase continuous signal2，0≤l2Not more than K, and2is an integer, and K is the number of subcarriers occupied by the signal bandwidth in the communication system.
In the network device of the embodiment of the present invention, the first configuration module is configured to configure the SPRS as a complex-valued signal or a real-valued signal with a constant phase and a constant amplitude.
In the network device of the embodiment of the present invention, the first configuration module is configured to include:
and configuring the time domain interval of the OFDM symbols occupied by the SPRS to be zero or a preset interval.
The network equipment of the embodiment of the invention configures a sinusoidal carrier positioning reference signal (SPRS) parameter set; configuring the SPRS according to the SPRS parameter set; the SPRS parameter set and the SPRS are sent to the terminal equipment, so that the terminal equipment receives the SPRS according to the SPRS parameter set, and then carries out carrier phase tracking processing according to the SPRS.
The network device of the embodiment of the present invention can implement all the implementation manners in the above-mentioned signal transmission method embodiment applied to the network device side, and can achieve the same technical effect, and for avoiding repetition, details are not described here again.
As shown in fig. 10, an embodiment of the present invention further provides a terminal device, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
receiving a sinusoidal carrier positioning reference signal (SPRS) parameter set sent by at least two network devices, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
acquiring the position information of the subcarrier occupied by the SPRS according to the SPRS parameter set;
and receiving the SPRS sent by the network equipment according to the position information of the subcarrier occupied by the SPRS.
Where in fig. 10, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 1000 and memory represented by memory 1020. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1010 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The user interface 1030 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 may store data used by the processor 1000 in performing operations.
Optionally, the set of SPRS parameters further includes a time domain interval of an OFDM symbol occupied by SPRS.
Optionally, the step of executing the program for receiving the sets of sinusoidal carrier positioning reference signals SPRS parameters sent by at least two network devices by the processor 1000 includes:
and receiving the SPRS parameter set sent by the network equipment through broadcast signaling, Downlink Control Information (DCI) signaling or positioning special signaling.
Optionally, the SPRS includes a time domain signal corresponding to the SPRS or a frequency domain signal corresponding to the SPRS.
Optionally, after the processor 1000 executes the step of receiving the program after the SPRS sent by the network device according to the position information of the subcarrier occupied by the SPRS, the processor is further configured to execute the following steps:
and carrying out carrier phase tracking processing according to the time domain signal or the frequency domain signal corresponding to the SPRS.
Optionally, the step of executing, by the processor 1000, a program for receiving an SPRS sent by the network device according to the location information of the subcarrier occupied by the SPRS includes:
acquiring a baseband signal sent by the network equipment according to the network configuration parameter information;
acquiring the frequency of each subcarrier occupied by the SPRS under the baseband signal according to the SPRS parameter set sent by the network equipment;
and carrying out frequency conversion filtering processing on the SPRS on the subcarrier of the frequency to obtain a time domain signal of the SPRS.
Optionally, the step of executing, by the processor 1000, a program for receiving an SPRS sent by the network device according to the location information of the subcarrier occupied by the SPRS includes:
presetting downlink signals sent by network equipment according to the position information of the subcarriers occupied by the SPRS to obtain frequency domain position information of the subcarriers;
and acquiring a frequency domain signal corresponding to the SPRS from the frequency domain position information of the subcarrier according to the SPRS parameter set.
The terminal equipment of the embodiment of the invention receives a sinusoidal carrier positioning reference signal (SPRS) parameter set sent by at least two network equipment; acquiring the position information of the subcarrier occupied by the SPRS according to the SPRS parameter set; and receiving the SPRS sent by the network equipment according to the position information of the sub-carrier occupied by the SPRS, and further carrying out carrier phase tracking processing according to the SPRS. According to the embodiment of the invention, on the premise of not additionally adding hardware resources, the SPRS can be obtained through the SPRS parameter set, and then the carrier phase tracking can be completed according to the SPRS, so that the positioning precision of the terminal is effectively improved.
The terminal device of the embodiment of the present invention can implement all the implementation manners in the signal receiving method embodiment applied to the terminal side, and can achieve the same technical effect, and for avoiding repetition, details are not described here again.
In some embodiments of the invention, there is also provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
receiving a sinusoidal carrier positioning reference signal (SPRS) parameter set sent by at least two network devices, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
acquiring the position information of the subcarrier occupied by the SPRS according to the SPRS parameter set;
and receiving the SPRS sent by the network equipment according to the position information of the subcarrier occupied by the SPRS.
When executed by the processor, the program can implement all the implementation manners in the signal receiving method embodiment applied to the terminal side, and can achieve the same technical effect, and in order to avoid repetition, the details are not described here again.
As shown in fig. 11, an embodiment of the present invention further provides a terminal device, including:
a first receiving module 1101, configured to receive a set of sinusoidal carrier positioning reference signals, SPRS, parameters sent by at least two network devices, where the set of SPRS parameters includes the number of subcarriers occupied by SPRS, the frequency domain position of the subcarriers occupied by SPRS, and the signal format of SPRS;
an obtaining module 1102, configured to obtain, according to the SPRS parameter set, location information of a subcarrier occupied by a SPRS;
a second receiving module 1103, configured to receive, according to the location information of the subcarrier occupied by the SPRS, the SPRS sent by the network device.
In the terminal device of the embodiment of the present invention, the SPRS parameter set further includes a time domain interval of an OFDM symbol occupied by the SPRS.
In the terminal device of the embodiment of the present invention, the first receiving module is configured to receive, through a broadcast signaling, a downlink control information DCI signaling, or a positioning dedicated signaling, an SPRS parameter set sent by the network device.
In the terminal device of the embodiment of the present invention, the SPRS includes a time domain signal corresponding to the SPRS or a frequency domain signal corresponding to the SPRS.
The terminal device of the embodiment of the invention further comprises:
and the processing module is used for the second receiving module to receive the SPRS sent by the network equipment according to the position information of the subcarrier occupied by the SPRS, and then to perform carrier phase tracking processing according to the time domain signal or the frequency domain signal corresponding to the SPRS.
In the terminal device of the embodiment of the present invention, the second receiving module includes:
the first obtaining submodule is used for obtaining a baseband signal sent by the network equipment according to the network configuration parameter information;
a second obtaining sub-module, configured to obtain, according to the set of SPRS parameters sent by the network device, a frequency of each subcarrier occupied by SPRS under the baseband signal;
and the third acquisition submodule is used for carrying out frequency conversion filtering processing on the SPRS on the subcarrier of the frequency to obtain a time domain signal of the SPRS.
In the terminal device of the embodiment of the present invention, the second receiving module includes:
the fourth obtaining submodule is used for carrying out preset processing on a downlink signal sent by the network equipment according to the position information of the subcarrier occupied by the SPRS to obtain the frequency domain position information of the subcarrier;
and the fifth obtaining submodule is used for obtaining the frequency domain signal corresponding to the SPRS from the frequency domain position information of the subcarrier according to the SPRS parameter set.
The terminal equipment of the embodiment of the invention receives a sinusoidal carrier positioning reference signal (SPRS) parameter set sent by at least two network equipment; acquiring the position information of the subcarrier occupied by the SPRS according to the SPRS parameter set; and receiving the SPRS sent by the network equipment according to the position information of the sub-carrier occupied by the SPRS, and further carrying out carrier phase tracking processing according to the SPRS. According to the embodiment of the invention, on the premise of not additionally adding hardware resources, the SPRS can be obtained through the SPRS parameter set, and then the carrier phase tracking can be completed according to the SPRS, so that the positioning precision of the terminal is effectively improved.
The terminal of the embodiment of the present invention can implement all the implementation manners in the signal receiving method embodiment applied to the terminal side, and can achieve the same technical effect, and for avoiding repetition, details are not described here again.
In various embodiments of the present invention, it should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (33)

1. A signal transmission method is applied to network equipment and is characterized by comprising the following steps:
configuring a sinusoidal carrier positioning reference signal (SPRS) parameter set, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
configuring the SPRS according to the SPRS parameter set;
and sending the SPRS parameter set and the SPRS to terminal equipment.
2. The signal transmission method of claim 1, wherein the set of SPRS parameters further includes a time domain interval of an Orthogonal Frequency Division Multiplexing (OFDM) symbol occupied by the SPRS.
3. The signal transmission method of claim 1, wherein transmitting the set of SPRS parameters to a terminal device comprises:
and sending the SPRS parameter set to terminal equipment through broadcast signaling, Downlink Control Information (DCI) signaling or positioning special signaling.
4. The signal transmission method according to claim 1, wherein the number of the sub-carriers occupied by the SPRS is at least two, and the sub-carriers occupied by the SPRS configured by different network devices are mutually orthogonal in a frequency domain.
5. The signal transmission method according to claim 1, wherein configuring the frequency domain position of the sub-carrier occupied by the SPRS in the set of SPRS parameters of the sinusoidal carrier positioning reference signal comprises:
by the formula
Figure FDA0002216656570000011
Determining a frequency domain position k of a subcarrier occupied by the SPRS;
wherein the content of the first and second substances,
Figure FDA0002216656570000012
and l1Is an integer,. DELTA.NCPIs DeltaTcpPresetting the number of sampling points in an OFDM baseband model in time, wherein N is TsymNumber of samples in time, TsymPresetting time, delta T, corresponding to OFDM symbols without cyclic prefix CP in OFDM baseband modelcpAnd K is the difference value of the time occupied by the first preset cyclic prefix CP and the time occupied by the second preset CP in the communication system, and the number of the subcarriers occupied by the signal bandwidth in the communication system.
6. The signal transmission method according to claim 1, wherein configuring the frequency domain position of the sub-carrier occupied by the SPRS in the set of SPRS parameters of the sinusoidal carrier positioning reference signal comprises:
when the frequency domain discrete signal of each subcarrier in the communication system is an equally-spaced signal and the frequency domain signal of each subcarrier in the communication system is a phase continuous signal, the frequency domain position of the subcarrier occupied by the SPRS is configured to be k ═ l2，0≤l2Not more than K, and2is an integer, and K is the number of subcarriers occupied by the signal bandwidth in the communication system.
7. The signal transmission method of claim 1, wherein configuring a signal format of an SPRS in a SPRS parameter set of a sinusoidal carrier positioning reference signal (SPRS), comprises:
the SPRS is configured as a constant phase, constant amplitude, complex-valued signal or a real signal.
8. The signal transmission method according to claim 2, wherein configuring the time domain interval of the OFDM symbol occupied by the SPRS in the set of SPRS parameters of the sinusoidal carrier positioning reference signal comprises:
and configuring the time domain interval of the OFDM symbols occupied by the SPRS to be zero or a preset interval.
9. A signal receiving method applied to a terminal device, comprising:
receiving a sinusoidal carrier positioning reference signal (SPRS) parameter set sent by at least two network devices, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
acquiring the position information of the subcarrier occupied by the SPRS according to the SPRS parameter set;
and receiving the SPRS sent by the network equipment according to the position information of the subcarrier occupied by the SPRS.
10. The signal receiving method of claim 9, wherein the set of SPRS parameters further includes a time domain interval of an OFDM symbol occupied by the SPRS.
11. The signal receiving method of claim 9, wherein receiving a set of sinusoidal carrier positioning reference signal (SPRS) parameters transmitted by at least two network devices comprises:
and receiving the SPRS parameter set sent by the network equipment through broadcast signaling, Downlink Control Information (DCI) signaling or positioning special signaling.
12. The signal receiving method according to claim 9, wherein the SPRS comprises a time domain signal corresponding to the SPRS or a frequency domain signal corresponding to the SPRS.
13. The signal receiving method according to claim 12, wherein after receiving the SPRS sent by the network device according to the position information of the sub-carriers occupied by the SPRS, the method further comprises:
and carrying out carrier phase tracking processing according to the time domain signal or the frequency domain signal corresponding to the SPRS.
14. The signal receiving method according to claim 9, wherein the receiving the SPRS sent by the network device according to the position information of the sub-carriers occupied by the SPRS comprises:
acquiring a baseband signal sent by the network equipment according to the network configuration parameter information;
acquiring the frequency of each subcarrier occupied by the SPRS under the baseband signal according to the SPRS parameter set sent by the network equipment;
and carrying out frequency conversion filtering processing on the SPRS on the subcarrier of the frequency to obtain a time domain signal of the SPRS.
15. The signal receiving method according to claim 9, wherein receiving the SPRS sent by the network device according to the position information of the subcarriers occupied by the SPRS comprises:
presetting downlink signals sent by network equipment according to the position information of the subcarriers occupied by the SPRS to obtain frequency domain position information of the subcarriers;
and acquiring a frequency domain signal corresponding to the SPRS from the frequency domain position information of the subcarrier according to the SPRS parameter set.
16. A network device, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of:
configuring a sinusoidal carrier positioning reference signal (SPRS) parameter set, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
configuring the SPRS according to the SPRS parameter set;
and sending the SPRS parameter set and the SPRS to terminal equipment through a transceiver.
17. The network device of claim 16, wherein the set of SPRS parameters further comprises a time domain interval of an orthogonal frequency division multiplexing, OFDM, symbol occupied by the SPRS.
18. The network device of claim 16, wherein the processor executing the program that sends the set of SPRS parameters to a terminal device comprises:
and sending the SPRS parameter set to terminal equipment through broadcast signaling, Downlink Control Information (DCI) signaling or positioning special signaling.
19. The network device of claim 16, wherein the number of the sub-carriers occupied by the SPRS is at least two, and the sub-carriers occupied by SPRS configured by different network devices are orthogonal to each other in a frequency domain.
20. The network device of claim 16, wherein the processor performs the step of configuring the frequency domain locations of the sub-carriers occupied by the SPRS in the set of sinusoidal carrier positioning reference signal (SPRS) parameters, comprising:
by the formula
Figure FDA0002216656570000041
Determining a frequency domain position k of a subcarrier occupied by the SPRS;
wherein the content of the first and second substances,
Figure FDA0002216656570000042
and l1Is an integer,. DELTA.NCPIs DeltaTcpPresetting the number of sampling points in an OFDM baseband model in time, wherein N is TsymNumber of samples in time, TsymPresetting time, delta T, corresponding to OFDM symbols without cyclic prefix CP in OFDM baseband modelcpAnd K is the difference value of the time occupied by the first preset cyclic prefix CP and the time occupied by the second preset CP in the communication system, and the number of the subcarriers occupied by the signal bandwidth in the communication system.
21. The network device of claim 16, wherein the processor performs the step of configuring the frequency domain locations of the sub-carriers occupied by the SPRS in the set of sinusoidal carrier positioning reference signal (SPRS) parameters comprises:
when the frequency domain discrete signal of each subcarrier in the communication system is an equally-spaced signal and the frequency domain signal of each subcarrier in the communication system is a phase continuous signal, the frequency domain position of the subcarrier occupied by the SPRS is configured to be k ═ l2，0≤l2Not more than K, and2is an integer, and K is the number of subcarriers occupied by the signal bandwidth in the communication system.
22. The network device of claim 16, wherein the processor performs the step of configuring the signal format of the SPRS in the set of sinusoidal carrier positioning reference signal (SPRS) parameters comprising:
the SPRS is configured as a constant phase, constant amplitude, complex-valued signal or a real signal.
23. The network device of claim 17, wherein the processor performs the step of configuring the time domain interval of the OFDM symbol occupied by the SPRS in the set of sinusoidal carrier positioning reference signal (SPRS) parameters comprises:
and configuring the time domain interval of the OFDM symbols occupied by the SPRS to be zero or a preset interval.
24. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the signal transmission method according to one of claims 1 to 8.
25. A terminal device, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of:
receiving a sinusoidal carrier positioning reference signal (SPRS) parameter set sent by at least two network devices through a transceiver, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
acquiring the position information of the subcarrier occupied by the SPRS according to the SPRS parameter set;
and receiving the SPRS sent by the network equipment through the transceiver according to the position information of the subcarrier occupied by the SPRS.
26. The terminal device of claim 25, wherein the set of SPRS parameters further includes a time domain interval of OFDM symbols occupied by SPRS.
27. The terminal device of claim 25, wherein the processor performs the step of receiving a set of sinusoidal carrier positioning reference signal (SPRS) parameters transmitted by at least two network devices comprises:
and receiving the SPRS parameter set sent by the network equipment through broadcast signaling, Downlink Control Information (DCI) signaling or positioning special signaling.
28. The terminal device of claim 25, wherein the SPRS comprises a time domain signal corresponding to SPRS or a frequency domain signal corresponding to SPRS.
29. The terminal device of claim 28, wherein the processor is further configured to, after the step of receiving the program after SPRS sent by the network device according to the location information of the sub-carriers occupied by SPRS, perform the following steps:
and carrying out carrier phase tracking processing according to the time domain signal or the frequency domain signal corresponding to the SPRS.
30. The terminal device of claim 25, wherein the processor executes a program for receiving the SPRS transmitted by the network device according to the position information of the sub-carriers occupied by the SPRS, the program comprising:
acquiring a baseband signal sent by the network equipment according to the network configuration parameter information;
acquiring the frequency of each subcarrier occupied by the SPRS under the baseband signal according to the SPRS parameter set sent by the network equipment;
and carrying out frequency conversion filtering processing on the SPRS on the subcarrier of the frequency to obtain a time domain signal of the SPRS.
31. The terminal device of claim 25, wherein the processor executes a program for receiving the SPRS transmitted by the network device according to the position information of the sub-carriers occupied by the SPRS, the program comprising:
presetting downlink signals sent by network equipment according to the position information of the subcarriers occupied by the SPRS to obtain frequency domain position information of the subcarriers;
and acquiring a frequency domain signal corresponding to the SPRS from the frequency domain position information of the subcarrier according to the SPRS parameter set.
32. A network device, comprising:
the device comprises a first configuration module, a second configuration module and a third configuration module, wherein the first configuration module is used for configuring a sinusoidal carrier positioning reference signal (SPRS) parameter set, and the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
the second configuration module is used for configuring the SPRS according to the SPRS parameter set;
and the sending module is used for sending the SPRS parameter set and the SPRS to terminal equipment.
33. A terminal device, comprising:
the first receiving module is used for receiving a sinusoidal carrier positioning reference signal (SPRS) parameter set sent by at least two network devices, wherein the SPRS parameter set comprises the number of subcarriers occupied by the SPRS, the frequency domain position of the subcarriers occupied by the SPRS and the signal format of the SPRS;
an obtaining module, configured to obtain, according to the SPRS parameter set, position information of subcarriers occupied by SPRS;
and the second receiving module is used for receiving the SPRS sent by the network equipment according to the position information of the subcarrier occupied by the SPRS.
CN201910917631.2A 2019-09-26 2019-09-26 Signal sending and receiving method, network equipment and terminal equipment Active CN112566010B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910917631.2A CN112566010B (en) 2019-09-26 2019-09-26 Signal sending and receiving method, network equipment and terminal equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910917631.2A CN112566010B (en) 2019-09-26 2019-09-26 Signal sending and receiving method, network equipment and terminal equipment

Publications (2)

Publication Number Publication Date
CN112566010A true CN112566010A (en) 2021-03-26
CN112566010B CN112566010B (en) 2022-03-29

Family

ID=75029846

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910917631.2A Active CN112566010B (en) 2019-09-26 2019-09-26 Signal sending and receiving method, network equipment and terminal equipment

Country Status (1)

Country Link
CN (1) CN112566010B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024006084A1 (en) * 2022-06-29 2024-01-04 Qualcomm Incorporated Carrier phase measurement-based position estimation
WO2024065555A1 (en) * 2022-09-29 2024-04-04 Zte Corporation Carrier phase-based positioning in wireless communication networks

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101778068A (en) * 2009-12-25 2010-07-14 中兴通讯股份有限公司 Frequency domain position-confirming method and device of positioning reference signal
CN109039555A (en) * 2017-06-10 2018-12-18 上海朗帛通信技术有限公司 A kind of user that be used to wirelessly communicate, the method and apparatus in base station
US20180367277A1 (en) * 2017-01-06 2018-12-20 Huawei Technologies Co.,Ltd. Reference signal configuration method, apparatus, and system
WO2019141090A1 (en) * 2018-01-19 2019-07-25 电信科学技术研究院有限公司 Positioning method and related device
CN112075047A (en) * 2018-05-04 2020-12-11 株式会社Kt Method and apparatus for performing positioning in a new radio network

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101778068A (en) * 2009-12-25 2010-07-14 中兴通讯股份有限公司 Frequency domain position-confirming method and device of positioning reference signal
US20180367277A1 (en) * 2017-01-06 2018-12-20 Huawei Technologies Co.,Ltd. Reference signal configuration method, apparatus, and system
CN109039555A (en) * 2017-06-10 2018-12-18 上海朗帛通信技术有限公司 A kind of user that be used to wirelessly communicate, the method and apparatus in base station
WO2019141090A1 (en) * 2018-01-19 2019-07-25 电信科学技术研究院有限公司 Positioning method and related device
CN110062457A (en) * 2018-01-19 2019-07-26 电信科学技术研究院有限公司 A kind of localization method and relevant device
CN112075047A (en) * 2018-05-04 2020-12-11 株式会社Kt Method and apparatus for performing positioning in a new radio network

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024006084A1 (en) * 2022-06-29 2024-01-04 Qualcomm Incorporated Carrier phase measurement-based position estimation
WO2024065555A1 (en) * 2022-09-29 2024-04-04 Zte Corporation Carrier phase-based positioning in wireless communication networks

Also Published As

Publication number Publication date
CN112566010B (en) 2022-03-29

Similar Documents

Publication Publication Date Title
KR20200105506A (en) Positioning method and related equipment
EP3714581B1 (en) A processing device for a network access node for generating phase compensated modulation symbols
KR20180019759A (en) Parameterized radio waveform for operating in multiple wireless environments
CN111669257B (en) PRS frequency domain resource mapping method, device and storage medium
CN112566010B (en) Signal sending and receiving method, network equipment and terminal equipment
JP5723396B2 (en) Signal generation apparatus, mobile communication terminal test apparatus including the same, signal generation method, and mobile communication terminal test method
US7751306B2 (en) Multi-carrier signals with selectable pilot pattern
EP4213517A1 (en) Positioning reference signal prs association method and communication apparatus
CN111464473B (en) Method and device for configuring information
CN109565484B (en) Common synchronization signal for new wireless carriers supporting different subcarrier spacings
WO2019052494A1 (en) Transmission method and transmission apparatus
CN108282309B (en) Reference signal transmission method and device
US20130329720A1 (en) Apparatus and Method for Wireless Baseband Processing
US7751489B2 (en) Digital generator and digital receiver for FDM signals
WO2021143644A1 (en) Carrier phase tracking method and apparatus
US9144109B2 (en) Methods and systems for multi-directional time preservation distribution in multi-communication core devices
WO2019029587A1 (en) Signal sending method, signal receiving method, terminal device, and network device
US8363750B2 (en) Apparatus, method and computer program for error compensation
US20230284187A1 (en) Signal sending method, signal receiving method, and apparatus
EP4231567A1 (en) Signal sending method and apparatus, and signal receiving method and apparatus
WO2022117180A1 (en) Uplink positioning reference signal generation for low complexity transmitters
WO2023016654A1 (en) Determing time of arrival based on phase measurement
CN115174338A (en) Frequency deviation determination method, frequency deviation determination device, storage medium and electronic equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant