CN110719148A - Positioning reference signal configuration and receiving method and equipment - Google Patents
Positioning reference signal configuration and receiving method and equipment Download PDFInfo
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- CN110719148A CN110719148A CN201810756733.6A CN201810756733A CN110719148A CN 110719148 A CN110719148 A CN 110719148A CN 201810756733 A CN201810756733 A CN 201810756733A CN 110719148 A CN110719148 A CN 110719148A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
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Abstract
The invention provides a positioning reference signal configuration and receiving method and equipment, wherein the configuration method comprises the following steps: sending target Downlink Control Information (DCI), wherein the target DCI is used for triggering the sending of an aperiodic positioning reference signal (A-PRS); and transmitting the A-PRS according to the transmission moment of the A-PRS. In the embodiment of the invention, the target DCI which is sent by the network equipment and used for triggering the non-periodic positioning reference signal A-PRS can trigger the network equipment to send the A-PRS according to the sending time of the A-PRS, so that the terminal equipment can realize temporary positioning or emergency positioning according to the received A-PRS, and the communication effectiveness is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a positioning reference signal configuration and receiving method and device.
Background
In a Long Term Evolution (LTE) system, a Positioning Reference Signal (PRS) is a periodic reference Signal, and a network device periodically transmits the PRS to a terminal device (User Equipment, UE) according to a configured period.
However, in a New Radio (NR) system, it is unclear how the network device configures PRS, so that the UE cannot perform positioning based on PRS. The present invention takes NR system as an example to illustrate the configuration of PRS, but is not limited to NR system.
Disclosure of Invention
The embodiment of the invention provides a positioning reference signal configuration and receiving method and equipment, which aim to solve the problem that UE cannot be positioned according to PRS.
In a first aspect, a positioning reference signal configuration method is provided, which is applied to a network device, and the method includes:
sending target Downlink Control Information (DCI), wherein the target DCI is used for triggering the sending of an aperiodic positioning reference signal (A-PRS);
and transmitting the A-PRS according to the transmission moment of the A-PRS.
In a second aspect, a positioning reference signal receiving method is provided, which is applied to a terminal device, and includes:
receiving target Downlink Control Information (DCI), wherein the target DCI is used for triggering the sending of an aperiodic positioning reference signal (A-PRS);
and receiving the A-PRS according to the sending time of the A-PRS.
In a third aspect, a network device is provided, which includes:
a first sending module, configured to send target downlink control information DCI, where the target DCI is used to trigger sending of an aperiodic positioning reference signal a-PRS;
and the second sending module is used for sending the A-PRS according to the sending time of the A-PRS.
In a fourth aspect, a terminal device is provided, which includes:
a first receiving module, configured to receive target downlink control information DCI, where the target DCI is used to trigger sending of an aperiodic positioning reference signal a-PRS;
and a second receiving module, configured to receive the a-PRS according to a sending time of the a-PRS.
In a fifth aspect, a network device is provided, which comprises a memory, a processor and a wireless communication program stored on the memory and executable on the processor, the wireless communication program, when executed by the processor, implementing the steps of the method according to the first aspect.
In a sixth aspect, a terminal device is provided, which comprises a memory, a processor and a wireless communication program stored on the memory and executable on the processor, the wireless communication program, when executed by the processor, implementing the steps of the method according to the second aspect.
In a seventh aspect, a computer readable medium is provided, having stored thereon a wireless communication program, which when executed by a processor, performs the steps of the method according to the first or second aspect.
In the embodiment of the invention, the target DCI which is sent by the network equipment and used for triggering the aperiodic positioning reference signal A-PRS can trigger the network equipment to send the A-PRS according to the sending time of the A-PRS, so that the terminal equipment can realize temporary positioning or emergency (emergency) positioning according to the received A-PRS, and the communication effectiveness is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is one of schematic flow charts of a positioning reference signal configuration method according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of positioning reference signal transmission and reception timings according to an embodiment of the present invention.
FIG. 3 is a second schematic flowchart of a positioning reference signal configuration method according to an embodiment of the invention
Fig. 4 is one of schematic flowcharts of a positioning reference signal receiving method according to an embodiment of the present invention.
Fig. 5 is a second schematic flowchart of a positioning reference signal receiving method according to an embodiment of the present invention.
Fig. 6 is one of the schematic structural diagrams of a network device 600 according to an embodiment of the present invention.
Fig. 7 is a second schematic structural diagram of a network device 600 according to an embodiment of the present invention.
Fig. 8 is one of the schematic structural diagrams of a terminal device 800 according to an embodiment of the present invention.
Fig. 9 is a second schematic structural diagram of a terminal device 800 according to an embodiment of the present invention.
Fig. 10 is a schematic structural diagram of a network device 1000 according to an embodiment of the present invention.
Fig. 11 is a schematic structural diagram of a terminal device 1100 according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS) or a Worldwide Interoperability for Microwave Access (WiMAX) communication System, a 5G System, or a New Radio (NR) System.
A Terminal device (UE), which may also be referred to as a Mobile Terminal (Mobile Terminal), a Mobile Terminal device, or the like, may communicate with at least one core Network via a Radio Access Network (RAN, for example), where the Terminal device may be a Mobile Terminal, such as a Mobile phone (or a "cellular" phone) and a computer having the Mobile Terminal, such as a portable, pocket, handheld, computer-embedded or vehicle-mounted Mobile device, and may exchange languages and/or data with the Radio Access Network.
The network device is a device deployed in a radio access network device and configured to provide a positioning reference signal configuration function for a terminal device, where the network device may be a base Station, and the base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a base Station (NodeB) in WCDMA, an evolved Node B (eNB or e-NodeB) and a 5G base Station (gNB) in LTE, and a network-side device in a subsequent evolved communication system, where the terms do not limit the protection scope of the present invention.
It should be noted that, when describing a specific embodiment, the sequence number of each process does not mean the execution sequence, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiment of the present invention.
It should be noted that, the positioning reference signal configuring and receiving method and apparatus provided in the embodiment of the present invention are described below only by taking the NR system as an example, and it should be understood that the positioning reference signal configuring and receiving method and apparatus provided in the embodiment of the present invention may also be applied to other communication systems, and are not limited to the NR system.
The following description will first describe a positioning reference signal configuration method applied to a network device with reference to fig. 1 to 3.
Fig. 1 illustrates a positioning reference signal configuration method according to an embodiment of the present invention, which is applied to a network device. As shown in fig. 1, the method may include the steps of:
step 101, sending target downlink control information DCI, where the target DCI is used to trigger sending of an aperiodic positioning reference signal A-PRS.
The Positioning Information includes Downlink Control Information (DCI) and an Aperiodic Positioning Reference Signal (a-PRS).
Specifically, in step 101, after receiving an aperiodic positioning request (temporary positioning request or emergency positioning request) from a terminal device (UE), the network device sends a target DCI to the UE to trigger the network device to send an a-PRS to the UE.
And 102, transmitting the A-PRS according to the transmission time of the A-PRS.
In general, the transmission time of the a-PRS is related to the transmission time of the target DCI and a preset time interval, where the preset time interval is an offset value of the transmission time of the a-PRS relative to the transmission time of the target DCI.
On this basis, as an example, the transmission timing of the a-PRS is a timing shifted backward by the preset time interval on the basis of the transmission timing of the target DCI. Specifically, as shown in fig. 2, assuming that the preset time interval is equal to Y, and the transmission time of the target DCI 21 is t1, the transmission time of the a-PRS22 is t2, and t2 is equal to t1+ Y. That is, after the network device transmits the target DCI 21 to the UE at time t1, the network device transmits a-PRS22 to the UE at time t1+ Y.
The preset time interval may be a slot offset value, or a slot offset value and an Orthogonal Frequency Division Multiplexing (OFDM) symbol offset value in the slot. For example, the preset time interval Y may be equal to m slots (slots), or the preset time interval Y may be equal to the sum of m slots (slots) and the ith OFDM symbol within m +1 slots.
Optionally, the preset time interval needs to be greater than a preset threshold, for example, greater than a time delay for the UE to receive the target DCI, so that the UE can accurately receive the a-PRS.
Wherein the preset threshold value is determined by at least one of the following modes: and reporting by the terminal equipment, configuring by the network equipment or appointing by a protocol.
Before step 102, the method for configuring a positioning reference signal according to the embodiment of the present invention may further include configuring the preset time interval for the terminal device based on at least one of ① configuring the preset time interval based on a Radio Resource Control (RRC) message, ② configuring a set of time intervals based on the RRC message, and indicating one time interval in the set as the preset time interval through DCI, where DCI used to indicate the preset time interval may be the target DCI or other DCIs, or ③ indicates the preset time interval based on MAC Control Element (CE) signaling.
That is, the network device may configure the preset time interval to the terminal device through an RRC message, DCI signaling, or MAC CE signaling.
Of course, the preset time interval may also be agreed by a protocol, and when the preset time interval is agreed by the protocol, the network device may not configure the preset time interval to the UE, but the UE itself obtains the preset time interval by querying the protocol, so as to save communication resources.
According to the positioning reference signal configuration method provided by the embodiment of the invention, the target DCI which is sent by the network equipment and used for triggering the non-periodic positioning reference signal A-PRS can trigger the network equipment to send the A-PRS according to the sending moment of the A-PRS, so that the terminal equipment can realize temporary positioning or emergency positioning according to the received A-PRS, and the communication effectiveness is improved.
Optionally, in another embodiment, as shown in fig. 3, the method for configuring a positioning reference signal according to an embodiment of the present invention may further include:
step 103, sending a periodic positioning reference signal P-PRS having a quasi-co-located QCL relationship with the A-PRS.
Wherein, the Periodic Positioning Reference Signal (P-PRS).
A brief introduction to the QCL (Quasi Co-location) relationship follows.
Specifically, if the signals of the two antenna ports satisfy the QCL relationship, at least one of the doppler shift, doppler spread, average delay, delay spread, and spatial reception parameters of the channel experienced by the two sets of signals is approximately the same.
QCL relationships may include several types:
QCL type A (QCL-TypeA): { Doppler shift, Doppler spread, average delay, delay spread }
QCL type B (QCL-TypeB): { Doppler shift, Doppler spread }
QCL type C (QCL-TypeC): { average delay, Doppler Shift }
QCL type D (QCL-type D): { spatial Receive (Rx) parameters }.
It should be noted that, for each type of QCL relationship, the parameters in parentheses are parameters that are approximately the same for the two sets of signals having that type.
Since at least one of the parameters of the channel such as doppler shift, doppler spread, average delay, delay spread and spatial reception parameters experienced by the two signals having QCL relationship is approximately the same, one of the two sets of signals can obtain the at least one parameter from the other set of signals.
Based on this principle, after the network device further transmits the P-PRS having the QCL relationship with the a-PRS to the UE, the terminal device is enabled to obtain at least one of the parameters of the a-PRS from the P-PRS, that is, the P-PRS can be used to provide at least one of the following parameters of the a-PRS: doppler shift, doppler spread, mean delay, delay spread, and spatial reception parameters.
In one example, in step 103, the QCL relationship between the a-PRS and the P-PRS may specifically be: QCL relationships of type a and QCL relationships of type D.
Further optionally, in step 103, the a-PRS is the same as at least one of the following parameters of the periodic P-PRS: bandwidth, OFDM symbol position and subcarrier position within one slot, etc.
The embodiment shown in fig. 3 provides a positioning reference signal configuration method, since a P-PRS having a QCL relationship with an a-PRS can be further configured to a UE, so that a terminal device can obtain one or more parameters of doppler shift, doppler spread, average delay, delay spread and spatial reception parameters of the a-PRS from the P-PRS, thereby further improving the communication effectiveness.
The above description is about a positioning reference signal configuration method applied to a network device, and a positioning reference signal receiving method applied to a terminal device according to an embodiment of the present invention is described below with reference to fig. 2, fig. 4, and fig. 5.
As shown in fig. 4, a positioning reference signal receiving method according to an embodiment of the present invention is applied to a terminal device, and may include the following steps:
step 401, receiving target downlink control information DCI, where the target DCI is used to trigger sending of an aperiodic positioning reference signal a-PRS.
For example, as shown in fig. 2, in step 401, the terminal device may receive the target DCI 21 at time T3, where time T3 has a certain time delay T with respect to the transmission time T2 at which the network device transmits the target DCI 21.
Step 402, receiving the A-PRS according to the sending time of the A-PRS.
In general, the transmission time of the a-PRS is related to the transmission time of the target DCI and a preset time interval, where the preset time interval is an offset value of the transmission time of the a-PRS relative to the transmission time of the target DCI.
On this basis, as an example, the transmission timing of the a-PRS is a timing shifted backward by the preset time interval on the basis of the transmission timing of the target DCI. Specifically, as shown in fig. 2, assuming that the preset time interval is equal to Y, and the transmission time of the target DCI 21 is t1, the transmission time of the a-PRS is t1+ Y (time t 2). On this basis, assuming that the time delay for the terminal device to receive the target DCI 21 is T, the terminal device may receive the target DCI 21 at time T1+ T (time T3); and assuming that the time delay of the terminal device for receiving the A-PRS22 is also T, the terminal device may receive the A-PRS22 at time T2+ T (time T4), and the time interval between time T3 and time T4 is equal to the preset time interval Y.
The preset time interval may be a slot offset value, or a slot offset value and an OFDM symbol offset value in the slot. For example, the preset time interval Y may be equal to m slots (slots), or the preset time interval Y may be equal to the sum of m slots (slots) and the ith OFDM symbol within m +1 slots.
Optionally, the preset time interval needs to be greater than a preset threshold, for example, greater than a time delay for the UE to receive the target DCI, so that the UE can accurately receive the a-PRS.
Wherein the preset threshold value is determined by at least one of the following modes: and reporting by the terminal equipment, configuring by the network equipment or appointing by a protocol.
Before the step 402, the method for receiving a positioning reference signal according to the embodiment of the present invention may further include determining the preset time interval based on at least one of ① configuring the preset time interval based on an RRC message, ② configuring a set of time intervals based on the RRC message, and indicating one time interval in the set as the preset time interval through a DCI, where the DCI for indicating the preset time interval may be the target DCI or other DCIs, ③ indicates the preset time interval based on MAC CE signaling, or ④ determines the preset time interval based on a protocol.
That is, the terminal device may determine the preset time interval through an RRC message, DCI signaling, MAC CE signaling, or protocol convention.
It is understood that, when the preset time interval is defined by a protocol, the UE can obtain the preset time interval through the query protocol without the configuration of the network device, so that communication resources can be saved.
According to the positioning reference signal receiving method provided by the embodiment of the invention, the terminal equipment receives the target DCI which is from the network equipment and used for triggering the non-periodic positioning reference signal A-PRS, and can trigger the network equipment to send the A-PRS according to the sending time of the A-PRS, so that the terminal equipment can receive the A-PRS according to the sending time of the A-PRS, further, the temporary positioning or the emergency positioning can be realized according to the received A-PRS, and the communication effectiveness is improved.
Optionally, in another embodiment, as shown in fig. 5, a method for receiving a positioning reference signal according to an embodiment of the present invention may further include:
step 403, receiving a periodic positioning reference signal P-PRS having a quasi-co-located QCL relationship with the A-PRS.
Since at least one of the parameters of the channel such as doppler shift, doppler spread, average delay, delay spread and spatial reception parameters experienced by the two signals having QCL relationship is approximately the same, one of the two sets of signals can obtain the at least one parameter from the other set of signals.
Based on this principle, after the terminal device further receives a P-PRS having a QCL relationship with the a-PRS from the network device, the terminal device may obtain at least one of the parameters of the a-PRS from the P-PRS, that is, the P-PRS may be used to provide at least one of the following parameters of the a-PRS: doppler shift, doppler spread, mean delay, delay spread, and spatial reception parameters.
In one example, in step 403, the QCL relationship between the a-PRS and the P-PRS may specifically be: QCL relationships of type a and QCL relationships of type D.
Further optionally, in step 403, the a-PRS is the same as at least one of the following parameters of the periodic P-PRS: bandwidth, OFDM symbol position and subcarrier position within one slot, etc.
The embodiment shown in fig. 5 provides a positioning reference signal receiving method, since the UE can further receive the P-PRS having the QCL relationship with the a-PRS from the network device, so that the terminal device can obtain one or more parameters of doppler shift, doppler spread, average delay, delay spread and spatial receiving parameters of the a-PRS from the P-PRS, thereby further improving the communication effectiveness.
Since the positioning reference signal receiving method provided by the embodiment of the present invention corresponds to the positioning reference signal configuring method provided by the embodiment of the present invention, the description of the positioning reference signal receiving method in the present specification is simpler, and for relevant points, refer to the description of the positioning reference signal configuring method in the foregoing.
The network device and the terminal device according to the embodiments of the present invention will be described in detail below with reference to fig. 6 to 9.
Fig. 6 shows a schematic structural diagram of a network device according to an embodiment of the present invention, and as shown in fig. 6, the network device 600 includes: a first sending module 601 and a second sending module 602.
A first sending module 601, configured to send target downlink control information DCI, where the target DCI is used to trigger sending of an aperiodic positioning reference signal a-PRS.
A second sending module 602, configured to send the a-PRS according to the sending time of the a-PRS.
And the sending time of the A-PRS is related to the sending time of the target DCI and a preset time interval, wherein the preset time interval is an offset value of the sending time of the A-PRS relative to the sending time of the target DCI.
As an example, the transmission timing of the a-PRS is a timing shifted backward by the preset time interval on the basis of the transmission timing of the target DCI.
The preset time interval may be a slot offset value, or a slot offset value and an Orthogonal Frequency Division Multiplexing (OFDM) symbol offset value in the slot. For example, the preset time interval Y may be equal to m slots (slots), or the preset time interval Y may be equal to the sum of m slots (slots) and the ith OFDM symbol within m +1 slots.
Optionally, the preset time interval needs to be greater than a preset threshold, for example, greater than a time delay for the UE to receive the target DCI, so that the UE can accurately receive the a-PRS.
Wherein the preset threshold value is determined by at least one of the following modes: and reporting by the terminal equipment, configuring by the network equipment or appointing by a protocol.
The network device 600 provided in the embodiment of the present invention may further include: and a preset time interval configuration module.
The preset time interval configuration module may be configured to configure the preset time interval for the terminal device based on at least one of ① configuring the preset time interval based on an RRC message, ② configuring a set of time intervals based on the RRC message, and indicating one time interval in the set as the preset time interval through DCI, where the DCI for indicating the preset time interval may be the target DCI or other DCIs, or ③ indicates the preset time interval based on MAC CE signaling.
That is, the network device may configure the preset time interval to the terminal device through an RRC message, DCI signaling, or MAC CE signaling.
Of course, the preset time interval may also be agreed by a protocol, and when the preset time interval is agreed by the protocol, the network device may not configure the preset time interval to the UE, but the UE itself obtains the preset time interval by querying the protocol, so as to save communication resources.
According to the network device 600 provided by the embodiment of the present invention, the target DCI for triggering the aperiodic positioning reference signal a-PRS is sent, so that the network device 600 can be triggered to send the a-PRS according to the sending time of the a-PRS, and the terminal device can implement temporary positioning or emergency positioning according to the received a-PRS, thereby improving the communication effectiveness.
Optionally, in another embodiment, as shown in fig. 7, the network device 600 provided in the embodiment of the present invention may further include: a third sending module 603.
A third transmitting module 603 operable to transmit a periodic positioning reference signal, P-PRS, having a quasi-co-located QCL relationship with the a-PRS;
wherein the P-PRS is configured to provide at least one of the following parameters of the A-PRS: doppler shift, doppler spread, mean delay, delay spread, and spatial reception parameters.
In the third sending module 603, the QCL relationship may include: QCL relationships of type a and QCL relationships of type D.
Optionally, the a-PRS is identical to at least one of the following parameters of the periodic P-PRS: bandwidth, orthogonal frequency division multiplexing, OFDM, symbol position and subcarrier position within a time slot.
The embodiment shown in fig. 7 provides a network device 600, which further improves the communication effectiveness because the UE can be further configured with a P-PRS having a QCL relationship with the a-PRS, so that the terminal device can obtain one or more of doppler shift, doppler spread, average delay, delay spread and spatial reception parameters of the a-PRS from the P-PRS.
The network device 600 shown in fig. 6 to fig. 7 may be used to implement the embodiments of the positioning reference signal configuration method shown in fig. 1 to fig. 3, and please refer to the above method embodiments for relevant points.
As shown in fig. 8, an embodiment of the present invention further provides a terminal device 800, where the terminal device 800 may include: a first receiving module 801 and a second receiving module 802.
A first receiving module 801, configured to receive target downlink control information DCI, where the target DCI is used to trigger sending of an aperiodic positioning reference signal a-PRS.
A second receiving module 802, configured to receive the a-PRS according to the transmission time of the a-PRS.
And the sending time of the A-PRS is related to the sending time of the target DCI and a preset time interval, wherein the preset time interval is an offset value of the sending time of the A-PRS relative to the sending time of the target DCI.
As an example, the transmission timing of the a-PRS is a timing shifted backward by the preset time interval on the basis of the transmission timing of the target DCI.
The preset time interval may be a slot offset value, or a slot offset value and an OFDM symbol offset value in the slot. For example, the preset time interval Y may be equal to m slots (slots), or the preset time interval Y may be equal to the sum of m slots (slots) and the ith OFDM symbol within m +1 slots.
Optionally, the preset time interval needs to be greater than a preset threshold, for example, greater than a time delay for the UE to receive the target DCI, so that the UE can accurately receive the a-PRS.
Wherein the preset threshold value is determined by at least one of the following modes: and reporting by the terminal equipment, configuring by the network equipment or appointing by a protocol.
Optionally, the terminal device 800 according to the embodiment of the present invention may further include a preset time interval determining module, configured to determine the preset time interval based on at least one of ① configuring the preset time interval based on an RRC message, ② configuring a set of time intervals based on the RRC message, and indicating one time interval in the set as the preset time interval through a DCI, where the DCI for indicating the preset time interval may be the target DCI or other DCIs, ③ indicates the preset time interval based on MAC CE signaling, or ④ determines the preset time interval based on a protocol.
That is, the terminal device 800 may determine the preset time interval through an RRC message, DCI signaling, MAC CE signaling, or protocol convention.
It is understood that, when the preset time interval is defined by a protocol, the UE can obtain the preset time interval through the query protocol without the configuration of the network device, so that communication resources can be saved.
According to the terminal device 800 provided by the embodiment of the invention, as the received target DCI which is from the network device and used for triggering the aperiodic positioning reference signal A-PRS can trigger the network device to send the A-PRS according to the sending time of the A-PRS, the terminal device 800 can receive the A-PRS according to the sending time of the A-PRS, and further can realize temporary positioning or emergency positioning according to the received A-PRS, thereby improving the communication effectiveness.
Optionally, in another embodiment, as shown in fig. 9, the terminal device 800 provided in the embodiment of the present invention may further include: a third receiving module 803.
A third receiving module 803, operable to receive a periodic positioning reference signal, P-PRS, having a quasi co-located QCL relationship with the a-PRS.
Since at least one of the parameters of the channel such as doppler shift, doppler spread, average delay, delay spread and spatial reception parameters experienced by the two signals having QCL relationship is approximately the same, one of the two sets of signals can obtain the at least one parameter from the other set of signals.
Based on this principle, after the terminal device 800 further receives the P-PRS having the QCL relationship with the a-PRS from the network device, the terminal device 800 is enabled to obtain at least one of the parameters of the a-PRS from the P-PRS, that is, the P-PRS can be used to provide at least one of the following parameters of the a-PRS: doppler shift, doppler spread, mean delay, delay spread, and spatial reception parameters.
In an example, in the third receiving module 803, the QCL relationship between the a-PRS and the P-PRS may specifically be: QCL relationships of type a and QCL relationships of type D.
Further, optionally, in the third receiving module 803, the a-PRS is the same as at least one of the following parameters of the periodic P-PRS: bandwidth, OFDM symbol position and subcarrier position within one slot, etc.
The terminal device 800 provided in the embodiment shown in fig. 9 further improves the communication effectiveness because the UE can further receive the P-PRS having the QCL relationship with the a-PRS from the network device, so that the terminal device can obtain one or more of doppler shift, doppler spread, average delay, delay spread and spatial reception parameters of the a-PRS from the P-PRS.
The terminal device 800 shown in fig. 8 to fig. 9 may be used to implement the embodiments of the positioning reference signal receiving method shown in fig. 4 to fig. 5, and please refer to the above method embodiments for relevant points.
It should be noted that, in a specific implementation, the first sending module, the second sending module, and the third sending module in the network device 600 described in the embodiments disclosed in this specification may be the same sending module or different sending modules, and these sending modules may be implemented in a form of software or hardware, or implemented in a manner of combining software and hardware. Similarly, the first receiving module, the second receiving module and the third receiving module in the terminal device 800 described in the embodiments disclosed in this specification may be the same receiving module or different receiving modules, and these receiving modules may be implemented in the form of software or hardware, or implemented in a combination of software and hardware. Whether these functional blocks are implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
Referring to fig. 10, fig. 10 is a structural diagram of a network device applied in the embodiment of the present invention, which can implement the details of the positioning reference signal configuration method and achieve the same effect. As shown in fig. 10, the network device 1000 includes: a processor 1001, a transceiver 1002, a memory 1003, a user interface 1004, and a bus interface, wherein:
in this embodiment of the present invention, the network device 1000 further includes: a computer program stored in the memory 1003 and capable of running on the processor 1001, wherein when being executed by the processor 1001, the computer program implements each process of the above positioning reference signal configuration method, and can achieve the same technical effect, and for avoiding repetition, the description is not repeated here.
In fig. 10, the bus architecture may include any number of interconnected buses and bridges, with at least one processor, represented by processor 1001, and various circuits, represented by memory 1003, being linked together. 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 1002 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1004 may also be an interface capable of interfacing with a desired device for different end devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 1001 is responsible for managing a bus architecture and general processes, and the memory 1003 may store data used by the processor 1001 in performing operations.
Fig. 11 is a schematic structural diagram of a terminal device according to another embodiment of the present invention. The terminal device 1100 shown in fig. 11 includes: at least one processor 1101, memory 1102, at least one network interface 1104, and a user interface 1103. The various components in end device 1100 are coupled together by a bus system 1105. It is understood that the bus system 1105 is used to enable communications among the components. The bus system 1105 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 11 as the bus system 1105.
The user interface 1103 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.
It is to be understood that the memory 1102 in embodiments of the present invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a Read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct memory bus RAM (DRRAM). The memory 1102 of the subject systems and methods is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 1102 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 11021 and application programs 11022.
The operating system 11021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 11022 contains various applications such as a media player (MediaPlayer), a Browser (Browser), and the like for implementing various application services. Programs that implement methods in accordance with embodiments of the invention may be included in application 11022.
In this embodiment of the present invention, the terminal device 1100 further includes: a computer program stored in the memory 1102 and capable of running on the processor 1101, where the computer program, when executed by the processor 1101, implements each process of the above-described positioning reference signal receiving method, and can achieve the same technical effect, and is not described herein again to avoid repetition.
The methods disclosed in the embodiments of the present invention described above may be implemented in the processor 1101 or by the processor 1101. The processor 1101 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 1101. The Processor 1101 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable Gate Array (FPGA) or other programmable logic device, discrete Gate or transistor logic device, discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 1102, and the processor 1101 reads the information in the memory 1102 and performs the steps of the above method in combination with the hardware thereof. In particular, the computer readable storage medium has stored thereon a computer program which, when executed by the processor 1101, realizes the steps of the positioning reference signal receiving method embodiments as described above.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the processing unit may be implemented in at least one Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a general purpose processor, a controller, a microcontroller, a microprocessor, other electronic units for performing the functions of the invention, or a combination thereof.
For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above positioning reference signal configuration method or the above positioning reference signal receiving method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
An embodiment of the present invention further provides a computer program product including instructions, and when a computer runs the instructions of the computer program product, the computer executes the above positioning reference signal configuration method or the above positioning reference signal receiving method. In particular, the computer program product may be run on the network device described above.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (21)
1. A positioning reference signal configuration method is applied to a network device, and the method comprises the following steps:
sending target Downlink Control Information (DCI) which is used for triggering aperiodic positioning reference signal
Transmitting the A-PRS;
and transmitting the A-PRS according to the transmission moment of the A-PRS.
2. The method of claim 1,
and the sending time of the A-PRS is related to the sending time of the target DCI and a preset time interval, wherein the preset time interval is an offset value of the sending time of the A-PRS relative to the sending time of the target DCI.
3. The method of claim 2, wherein the step of removing the substrate comprises removing the substrate from the substrate
The preset time interval includes: a slot offset value, or a slot offset value and an orthogonal frequency division multiplexing, OFDM, symbol offset value within the slot.
4. The method of claim 2,
the preset time interval is greater than a preset threshold value, and the preset threshold value is determined by at least one of the following modes:
reporting by the terminal equipment;
configured by the network device; or
As agreed by the protocol.
5. The method according to any one of claims 2-4, further comprising: configuring the preset time interval for the terminal equipment based on at least one of the following modes:
configuring the preset time interval based on a Radio Resource Control (RRC) message;
configuring a set of time intervals based on an RRC message, and indicating one time interval in the set as the preset time interval through DCI; or
Indicating the preset time interval based on MAC Control Element (CE) signaling.
6. The method of claim 1, further comprising:
transmitting a periodic positioning reference signal, P-PRS, having a quasi-co-located QCL relationship with the A-PRS;
wherein the P-PRS is configured to provide at least one of the following parameters of the A-PRS: doppler shift, doppler spread, mean delay, delay spread, and spatial reception parameters.
7. The method of claim 6,
the QCL relationships include: QCL relationships of type a and QCL relationships of type D.
8. The method according to claim 6 or 7,
the A-PRS is identical to at least one of the following parameters of the periodic P-PRS: bandwidth, orthogonal frequency division multiplexing, OFDM, symbol position and subcarrier position within a time slot.
9. A positioning reference signal receiving method is applied to a terminal device, and comprises the following steps:
receiving target Downlink Control Information (DCI) which is used for triggering aperiodic positioning reference signal
Transmitting the A-PRS;
and receiving the A-PRS according to the sending time of the A-PRS.
10. The method of claim 9,
and the sending time of the A-PRS is related to the sending time of the target DCI and a preset time interval, wherein the preset time interval is an offset value of the sending time of the A-PRS relative to the sending time of the target DCI.
11. The method of claim 10,
the preset time interval includes: a slot offset value, or a slot offset value and an orthogonal frequency division multiplexing, OFDM, symbol offset value within the slot.
12. The method of claim 10,
the preset time interval is greater than a preset threshold value, and the preset threshold value is determined by at least one of the following modes:
reporting by the terminal equipment;
configured by the network device; or
As agreed by the protocol.
13. The method according to any one of claims 10-12, further comprising: determining the preset time interval based on at least one of:
determining the preset time interval based on a Radio Resource Control (RRC) message;
determining a set of time intervals based on the RRC message, and regarding one time interval in the set as the preset time interval based on the indication of the DCI;
determining the preset time interval based on MAC Control Element (CE) signaling; or
Determining the preset time interval based on a protocol.
14. The method of claim 9, further comprising:
receiving a periodic positioning reference signal, P-PRS, having a quasi-co-located QCL relationship with the A-PRS;
wherein the P-PRS is configured to provide at least one of the following parameters of the A-PRS: doppler shift, doppler spread, mean delay, delay spread, and spatial reception parameters.
15. The method of claim 14,
the QCL relationships include: QCL relationships of type a and QCL relationships of type D.
16. The method according to claim 14 or 15,
the A-PRS is identical to at least one of the following parameters of the periodic P-PRS: bandwidth, orthogonal frequency division multiplexing, OFDM, symbol position and subcarrier position within a time slot.
17. A network device, characterized in that the network device comprises:
a first sending module, configured to send target downlink control information DCI, where the target DCI is used to trigger sending of an aperiodic positioning reference signal a-PRS;
and the second sending module is used for sending the A-PRS according to the sending time of the A-PRS.
18. A terminal device, characterized in that the terminal device comprises:
a first receiving module, configured to receive target downlink control information DCI, where the target DCI is used to trigger sending of an aperiodic positioning reference signal a-PRS;
and a second receiving module, configured to receive the a-PRS according to a sending time of the a-PRS.
19. A network device comprising a memory, a processor, and a wireless communication program stored on the memory and executed on the processor, the wireless communication program when executed by the processor implementing the steps of the method of any one of claims 1-8.
20. A terminal device, characterized in that it comprises a memory, a processor and a wireless communication program stored on said memory and running on said processor, said wireless communication program, when executed by said processor, implementing the steps of the method according to any one of claims 9-16.
21. A computer readable medium having stored thereon a wireless communication program which, when executed by a processor, carries out the steps of the method according to any one of claims 1 to 16.
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