CN110661601A - Positioning reference signal configuration method, network side equipment and terminal equipment - Google Patents
Positioning reference signal configuration method, network side equipment and terminal equipment Download PDFInfo
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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
- 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
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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
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Abstract
The embodiment of the invention discloses a positioning reference signal configuration method, network side equipment and terminal equipment, wherein the method comprises the following steps: and transmitting one or more PRS resource sets, wherein each PRS resource set comprises at least one PRS resource. The embodiment of the invention can realize that the network side equipment configures the PRS for the terminal equipment, thereby improving the communication effectiveness.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a positioning reference signal configuration method, a network side device, and a terminal device.
Background
Positioning Reference Signals (PRS) are generally used in Observed Time Difference (OTDOA) Positioning methods to determine the geographical location of a terminal Equipment (UE). In the OTDOA positioning method, a network side device transmits PRS, and a UE determines its own geographical location by measuring PRS of a plurality of network side devices.
However, in the New air interface (NR, New Radio) of the fifth generation (5G) mobile communication system, a corresponding scheme for configuring PRS is still lacking at present. The NR system is used as an example in the embodiments of the present invention, but those skilled in the art will understand that the system is not limited thereto.
Disclosure of Invention
The embodiment of the invention aims to provide a positioning reference signal configuration method, network side equipment and terminal equipment, which can effectively realize that the network side equipment configures a positioning reference signal for the terminal equipment.
In a first aspect, an embodiment of the present invention provides a method for configuring a positioning reference signal, where the method is applied to a network side device, and the method includes:
and transmitting one or more PRS resource sets, wherein each PRS resource set comprises at least one PRS resource.
In a second aspect, an embodiment of the present invention provides a method for configuring a positioning reference signal, which is applied to a terminal device, and the method includes:
one or more PRS resource sets are received, wherein each PRS resource set comprises at least one PRS resource.
In a third aspect, an embodiment of the present invention provides a network side device, including:
a sending module, configured to send one or more PRS resource sets, where each PRS resource set includes at least one PRS resource.
In a fourth aspect, an embodiment of the present invention provides a network-side device, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the positioning reference signal configuration method according to the first aspect.
In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the positioning reference signal configuration method according to the first aspect.
In a sixth aspect, an embodiment of the present invention provides a terminal device, including:
a receiving module, configured to receive one or more PRS resource sets, where each PRS resource set includes at least one PRS resource.
In a seventh aspect, an embodiment of the present invention provides a terminal device, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the positioning reference signal configuration method according to the second aspect.
In an eighth aspect, the embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the positioning reference signal configuration method according to the second aspect.
In the embodiment of the invention, network side equipment sends one or more PRS resource sets, wherein each PRS resource set comprises at least one PRS resource, so that the network side equipment can configure PRS for terminal equipment, and the communication effectiveness is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention;
fig. 2 is a method for configuring a positioning reference signal according to an embodiment of the present invention;
fig. 3 is a diagram illustrating a PRS resource set according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an NZP-CSI-RS resource set as a PRS resource set according to an embodiment of the present invention;
fig. 5 is a diagram illustrating a first PRS resource mapping pattern according to an embodiment of the present invention;
fig. 6 is a diagram illustrating a second PRS resource mapping pattern according to an embodiment of the present invention;
fig. 7 is a diagram illustrating another second PRS resource mapping pattern according to an embodiment of the present invention;
fig. 8 is a flowchart illustrating another positioning reference signal configuration method according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a network-side device according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of another network-side device according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of another terminal device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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.
Referring to fig. 1, fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention. As shown in fig. 1, the UE includes a User terminal 11 and a base station 12, where the User terminal 11 may be a terminal Equipment (UE), for example: the terminal side Device may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID, Mobile Internet Device), or a Wearable Device (Wearable Device), and it should be noted that the specific type of the user terminal 11 is not limited in the embodiments of the present invention. The base station 12 may be a base station of 5G and later releases (e.g., a gNB, a 5G NR NB), or a base station in other communication systems, or referred to as a node B, and it should be noted that, in the embodiment of the present invention, only the 5G base station is taken as an example, but the specific type of the base station 12 is not limited.
It should be noted that the specific functions of the user terminal 11 and the base station 12 are described in detail through a plurality of embodiments below.
Fig. 2 is a flowchart illustrating a positioning reference signal configuration method according to an embodiment of the present invention. The method is applied to the network side equipment, and can be as follows.
Step 210, one or more PRS resource sets are transmitted to the terminal device, where each PRS resource set includes at least one PRS resource.
The network side device may configure one or more PRS resource sets for the terminal device, where each PRS resource set includes at least one PRS resource. The network side device may implement flexible configuration of PRS resource mapping patterns by configuring each PRS resource in the one or more sets of PRS resources.
The set of one or more PRS resources configured by the network side device may include the following two.
The first method comprises the following steps: and the network side equipment directly configures one or more PRS resource sets for the terminal equipment.
Fig. 3 is a diagram illustrating a PRS resource set according to an embodiment of the present invention.
As shown in fig. 3, the network side device configures 1 set of PRS resources in one slot, where the slot includes 14 (l ═ 0-13) Orthogonal Frequency Division Multiplexing (OFDM) symbols. The PRS resource set includes 8 periodic PRS resources, e.g., 31 and 32 are two PRS resources mapped on two resource elements at different frequency domain locations in the same OFDM symbol, respectively.
In this embodiment of the present invention, before sending one or more PRS resource sets, the method further includes:
and sending second target configuration information to the terminal equipment, wherein the second target configuration information is used for configuring PRS resources in the PRS resource set.
Specifically, the second target configuration information includes at least one of:
resource configuration identification corresponding to PRS resources;
period information and slot offset information of the PRS resources;
resource mapping information of PRS resources;
power control information of PRS resources;
scrambling code identification information used for generating PRS resources;
partial bandwidth (BWP, Band Width Part) information corresponding to the PRS resource;
quasi co-location (QCL) information of PRS resources.
Wherein: (1) the resource configuration identifier corresponding to the PRS resource may also be referred to as a PRS resource ID.
(2) The period information of the PRS resource may indicate a transmission period of the PRS resource; the slot information of the PRS resource may indicate a slot offset of the PRS resource.
(3) The resource mapping information of the PRS resource comprises at least one of the following: antenna port information, time-frequency position information, frequency domain density and bandwidth information.
Wherein, the antenna port information represents the antenna port information for transmitting the PRS resource; the time-frequency position information represents the occupied positions of the OFDM symbols and the subcarriers corresponding to the PRS resources; the frequency domain density represents the PRS frequency domain density of each Physical Resource Block (PRB) on each PRS transmission port; the bandwidth information indicates a bandwidth and a frequency domain initial PRB index of the PRS resource.
In the embodiment of the invention, the frequency domain density of at least one PRS resource included in each PRS resource set is the same.
That is to say, in one or more PRS resource sets configured by the network side device for the terminal device, all PRS resources in each PRS resource set are distributed at equal intervals in the frequency domain.
In addition, all PRS resources in one PRS resource set configured by the network side device correspond to the same antenna port and the same transmission beam.
(4) The power control information of the PRS resource includes at least one of: the ratio of the Energy Per Resource Element (EPRE) of PRS to the Synchronization Signal Block (SSB) EPRE, and the ratio of PRS EPRE to the Physical Downlink Shared Channel (PDSCH) EPRE.
(5) Scrambling code identification information used for generating PRS resources, e.g., scrambling code ID information used for determining an initial value in a PRS pseudo random sequence.
(6) The BWP information of the PRS resource indicates on which BWP the network-side device configures the PRS resource.
(7) The QCL information of the PRS resource includes PRS Transmission Configuration Indicator (TCI) state information indicating a QCL source reference signal of the PRS resource.
In the embodiment of the invention, the PRS resource is determined to be in N according to the period information and the time slot offset information of the PRS resourcePRSTransmitting in continuous downlink time slots; in NPRSIn a first one of the consecutive downlink time slots:
wherein the content of the first and second substances,
number of slots, n, included in a radio frame corresponding to a target parameter numerologyfIs the radio frame number, nsIs the number of time slots, Δ, in a radio framePRSTime slot offset information for PRS resources, TPRSMod is the modulo operation for the period information of the PRS resource.
It should be noted that the second target resource configuration information may include other parameter information besides the above resource configuration identifier, the period information, the slot offset information, the resource mapping information, the power control information, the scrambling code identifier information, the BWP information, and the QCL information, which is not limited herein.
The network side device sends the second target configuration information to the terminal device, so that the terminal device can effectively receive one or more PRS resource sets sent by the network side device according to the second target configuration information after receiving the second target configuration information.
In the embodiment of the present invention, the manner of sending the second target configuration information to the terminal device includes at least one of the following:
transmitting second target configuration information through Radio Resource Control (RRC) signaling;
sending second target configuration information through Media Access Control (MAC) signaling;
the second target configuration Information is transmitted through Downlink Control Information (DCI) signaling.
It should be noted that, in addition to the three manners described above, the manner of sending the second target configuration information may also be defined according to a preset protocol, and is not limited specifically here.
And the second method comprises the following steps: a Non-Zero Power Channel State Information Reference signal (NZP-CSI-RS) resource set in the prior art is used as a PRS resource set.
In the embodiment of the invention, the method further comprises the following steps:
and transmitting first target configuration information to the terminal equipment, wherein the first target configuration information is used for indicating one or more NZP-CSI-RS resources in the NZP-CSI-RS resource set as PRS resources.
For example, the network side device may configure a 1-port NZP-CSI-RS resource as a PRS resource. By configuring first target configuration information (e.g., PRS-info) for one NZP-CSI-RS resource set and sending the first target configuration information to the terminal equipment, the terminal equipment can use one or more NZP-CSI-RS resources in the received NZP-CSI-RS resource set corresponding to the first target configuration information as PRS resources according to the first target configuration information, and then perform a subsequent positioning process for determining its own geographical location.
Fig. 4 is a diagram of an NZP-CSI-RS resource set as a PRS resource set according to an embodiment of the present invention.
As shown in fig. 4, the network side device configures 1 NZP-CSI-RS resource set as a PRS resource set in one slot, where the slot includes 14 (l ═ 0-13) OFDM symbols. The NZP-CSI-RS resource set includes 8 periodic NZP-CSI-RS resources, e.g., 41 and 42 are two NZP-CSI-RS resources as PRS resources mapped on two resource elements at different frequency domain positions in the same OFDM symbol, respectively.
In the embodiment of the invention, one or more NZP-CSI-RS resources as PRS resources correspond to the same antenna port and the same transmission beam.
In the embodiment of the present invention, the manner of sending the first target configuration information to the terminal device includes at least one of the following:
transmitting the first target configuration information through RRC signaling;
sending the first target configuration information through MAC signaling;
transmitting the first target configuration information through DCI signaling.
It should be noted that, the manner of sending the first target configuration information may be the above three, and the first target configuration information may also be specified according to a preset protocol, which is not specifically limited herein.
In this embodiment of the present invention, before the network side device sends an NZP-CSI-RS resource set as a PRS resource, the method further includes:
and sending second target configuration information to the terminal equipment, wherein the second target configuration information is used for configuring the NZP-CSI-RS resources in the NZP-CSI-RS resource set.
Specifically, the second target configuration information includes at least one of:
a resource configuration identifier corresponding to the NZP-CSI-RS resource;
period information and time slot offset information of the NZP-CSI-RS resource;
resource mapping information of the NZP-CSI-RS resource;
power control information of the NZP-CSI-RS resource;
scrambling code identification information used for generating NZP-CSI-RS resources;
BWP information corresponding to the NZP-CSI-RS resource;
QCL information of the NZP-CSI-RS resource.
Wherein: (1) the resource configuration identifier corresponding to the NZP-CSI-RS resource may also be referred to as an NZP-CSI-RS resource ID.
(2) The period information of the NZP-CSI-RS resource may indicate a transmission period of the NZP-CSI-RS resource; the slot information of the NZP-CSI-RS resource may indicate a slot offset of the NZP-CSI-RS resource.
(3) The resource mapping information of the NZP-CSI-RS resource includes at least one of: antenna port information, time-frequency position information, frequency domain density and bandwidth information. Wherein, the antenna port information represents the antenna port information for sending the NZP-CSI-RS resource; the time-frequency position information represents the occupied positions of OFDM symbols and subcarriers corresponding to the NZP-CSI-RS resources; the frequency domain density represents the frequency domain density of the NZP-CSI-RS resource of each PRB on each NZP-CSI-RS sending port; the bandwidth information indicates a bandwidth and a frequency-domain initial PRB index of the NZP-CSI-RS resource.
In the embodiment of the invention, the frequency domain densities of one or more NZP-CSI-RS resources as PRS resources are the same.
That is, one or more NZP-CSI-RS resources configured by the network side device for the terminal device as PRS resources are distributed at equal intervals in the frequency domain.
In the embodiment of the invention, one or more NZP-CSI-RS resources which are configured by network side equipment and are used as PRS resources correspond to the same antenna port and the same transmission beam.
(4) The power control information of the NZP-CSI-RS resource includes at least one of: the ratio of NZP-CSI-RS EPRE to SSB EPRE, the ratio of NZP-CSI-RS EPRE to PDSCH EPRE.
(5) Scrambling code identification information for generating the NZP-CSI-RS resources, e.g., scrambling code ID information for determining initial values in the NZP-CSI-RS resource sequence.
(6) The BWP information of the NZP-CSI-RS resource indicates on which BWP the network-side device configures the NZP-CSI-RS resource.
(7) The QCL information of the NZP-CSI-RS resource includes NZP-CSI-RS resource TCI status information, which is used to indicate a QCL source reference signal of the NZP-CSI-RS resource.
In addition, since the network side device in the prior art also sends the configuration information corresponding to the NZP-CSI-RS resource (the second target configuration information corresponding to the NZP-CSI-RS resource described above) to the terminal device through the higher layer signaling before sending the NZP-CSI-RS resource to the terminal device, in the embodiment of the present invention, when the NZP-CSI-RS resource is used as the PRS resource, compared with the prior art, only the higher layer signaling for sending the first target configuration information is added, and the higher layer signaling overhead in the PRS configuration process can be effectively reduced.
It should be noted that, in the embodiment of the present invention, the RRC signaling, the MAC signaling, and the DCI signaling for sending the first target configuration information and the second target configuration information may be the same or different, and are not limited specifically herein.
In the embodiment of the present invention, sending one or more PRS resource sets includes:
determining a target PRS resource mapping pattern according to the positioning performance index;
one or more sets of PRS resources are transmitted according to a target PRS resource mapping pattern.
Wherein, the positioning performance index comprises: positioning accuracy index and positioning delay index.
In practical application, under different application scenarios, the positioning requirements of the terminal device are different. Therefore, the network side device can configure a positioning performance index for the terminal device through a high-level signaling for a specific application scenario, and then determine a target PRS resource mapping pattern matched with the positioning performance index according to the positioning performance index, so that one or more PRS resource sets can be sent to the terminal device according to the target PRS resource mapping pattern, thereby meeting the positioning requirement of the terminal device.
In the embodiment of the present invention, according to the positioning performance index, the target PRS resource mapping pattern is determined, which includes at least one of the following:
determining a first PRS resource mapping pattern with the frequency domain density meeting the positioning accuracy index as a target PRS resource mapping pattern;
and determining a second PRS resource mapping pattern with the number of occupied OFDM symbols meeting the positioning delay index as the target PRS resource mapping pattern.
When the positioning accuracy index is higher, selecting a first PRS resource mapping pattern with good positioning performance, namely high frequency domain density, as a target PRS resource mapping pattern for sending a PRS resource set; and when the positioning accuracy index is low, selecting a first PRS resource mapping pattern with low frequency domain density, namely sparse frequency domain density, as a target PRS resource mapping pattern for sending the PRS resource set.
Fig. 5 is a diagram of a first PRS resource mapping pattern according to an embodiment of the present invention.
As shown in fig. 5, when the positioning accuracy requirement is high, the following positioning accuracy indexes are selected: a first PRS resource mapping pattern with a frequency domain density of 3 is used as a target PRS resource mapping pattern to transmit a set of PRS resources.
When the positioning delay index is higher, namely the delay of the positioning calculation process is required to be small, selecting a second PRS resource mapping pattern occupying less OFDM symbols as a target PRS resource mapping pattern for sending a PRS resource set; and when the positioning delay index is lower, selecting a second PRS resource mapping pattern occupying more OFDM symbols as a target PRS resource mapping pattern for sending the PRS resource set.
Fig. 6 is a diagram of a second PRS resource mapping pattern according to an embodiment of the present invention.
As shown in fig. 6, when the positioning delay indicator is high, the following parameters are selected according to the positioning delay indicator: and the second PRS resource mapping pattern occupying 3 OFDM symbols is used as a target PRS resource mapping pattern for sending the PRS resource set so as to reduce the time delay.
Fig. 7 is a diagram of another second PRS resource mapping pattern according to an embodiment of the present invention.
As shown in fig. 7, when the positioning delay index is very high, the following parameters are selected according to the positioning delay index: and the second PRS resource mapping pattern occupying 1 OFDM symbol is used as a target PRS resource mapping pattern for sending the PRS resource set so as to reduce the time delay.
In the embodiment of the invention, in one time slot, the target PRS resource mapping pattern is in a diagonal type or an anti-diagonal type.
Still taking the above-mentioned fig. 5 or fig. 6 as an example, as shown in fig. 5 or fig. 6, within one slot, the target PRS resource mapping pattern is diagonal or anti-diagonal.
That is, PRS resource elements RE on OFDM symbols occupied by consecutive N PRS resources are distributed diagonally or anti-diagonally.
And the N is not less than a preset value, and the preset value can be reported by the terminal equipment or configured by the network side equipment.
Compared with LTE, in case that the PRS resource mapping pattern needs to avoid Common Reference Signals (CRS) on fixed OFDM symbols, there is no CRS in the NR system, and therefore, the PRS resource mapping pattern in the embodiment of the present invention does not need to consider the problem of avoiding CRS.
Furthermore, in LTE the PRS resource mapping patterns are distributed over a subframe, which contains 2 slots, such that the complete PRS resource mapping pattern corresponds to PRS resources within two adjacent slots. In the NR system, there is no concept of a subframe, and thus, the PRS resource mapping pattern in the embodiment of the present invention corresponds to PRS resources within one slot only.
It should be noted that the positioning reference signal configuration method according to the embodiment of the present invention may be applied to not only an NR system, but also other communication systems that do not explicitly configure a positioning reference signal, and is not specifically limited herein.
According to the technical scheme recorded by the embodiment of the invention, the network side equipment sends one or more PRS resource sets, wherein each PRS resource set comprises at least one PRS resource, so that the network side equipment can configure PRS for the terminal equipment, and the communication effectiveness is improved.
Fig. 8 is a flowchart illustrating another positioning reference signal configuration method according to an embodiment of the present invention. The method is applied to the terminal equipment, and can be as follows.
Step 810, the terminal device receives one or more PRS resource sets, where each PRS resource set includes at least one PRS resource.
The terminal device may receive one or more PRS resource sets configured by the network side device, where each PRS resource set includes at least one PRS resource. And then according to the received PRS resources, a subsequent positioning process for determining the own geographical position is executed.
The set of one or more PRS resources received by the terminal device may include the following two.
The first method comprises the following steps: received is one or more PRS resource sets directly configured for the terminal device by the network side device.
In the embodiment of the invention, the method further comprises the following steps:
and receiving second target configuration information, wherein the second target configuration information is used for indicating configuration information corresponding to PRS resources in the PRS resource set.
Wherein the second target configuration information includes at least one of:
resource configuration identification corresponding to PRS resources;
period information and slot offset information of the PRS resources;
resource mapping information of PRS resources;
power control information of PRS resources;
scrambling code identification information used for generating PRS resources;
BWP information corresponding to PRS resources;
QCL information of PRS resources.
In the embodiment of the invention, the frequency domain density of at least one PRS resource included in each PRS resource set is the same.
The terminal device receives the second target configuration information sent by the network side device, so that the terminal device can effectively receive one or more PRS resource sets sent by the network side device according to the second target configuration information after receiving the second target configuration information.
In this embodiment of the present invention, the manner of receiving the second target configuration information includes at least one of:
receiving second target configuration information through RRC signaling;
receiving second target configuration information through MAC signaling;
and receiving second target configuration information through DCI signaling.
It should be noted that, in addition to the three manners described above, the manner of sending the second target configuration information may also be defined according to a preset protocol, and is not limited specifically here.
And the second method comprises the following steps: received is a set of NZP-CSI-RS resources as a set of PRS resources.
In the embodiment of the invention, the PRS resource set is an NZP-CSI-RS resource set.
In the embodiment of the invention, the method further comprises the following steps:
receiving first target configuration information, wherein the first target configuration information is used for indicating one or more NZP-CSI-RS resources in the NZP-CSI-RS resource set as PRS resources.
For example, the network side device may configure a 1-port NZP-CSI-RS resource as a PRS resource. By configuring first target configuration information (e.g., PRS-info) for one NZP-CSI-RS resource set and sending the first target configuration information to the terminal equipment, the terminal equipment can use one or more NZP-CSI-RS resources in the received NZP-CSI-RS resource set corresponding to the first target configuration information as PRS resources according to the first target configuration information to perform a subsequent positioning process for determining its own geographical location.
In the embodiment of the invention, the method further comprises the following steps:
receiving one or more NZP-CSI-RS resources as PRS resources, wherein the one or more NZP-CSI-RS resources as PRS resources correspond to a same port and a same transmission beam.
In this embodiment of the present invention, the manner of receiving the first target configuration information includes at least one of:
receiving first target configuration information through RRC signaling;
receiving first target configuration information through MAC signaling;
the first target configuration information is received through DCI signaling.
It should be noted that, the manner of sending the first target configuration information may be the above three, and the first target configuration information may also be specified according to a preset protocol, which is not specifically limited herein.
In the embodiment of the present invention, the RRC signaling, the MAC signaling, and the DCI signaling for receiving the first target configuration information and sending the second target configuration information may be the same or different, and are not limited specifically herein.
According to the technical scheme recorded in the embodiment of the invention, the terminal equipment receives one or more PRS resource sets, wherein each PRS resource set comprises at least one PRS resource, so that the terminal equipment can receive the PRS configured by the network side equipment, and the communication effectiveness is improved.
Fig. 9 is a schematic structural diagram of a network-side device according to an embodiment of the present application. The network-side device 900 shown in fig. 9 includes:
a sending module 901, configured to send one or more PRS resource sets, where each PRS resource set includes at least one PRS resource.
Optionally, the PRS resource set is an NZP-CSI-RS resource set.
Optionally, the sending module 901 further includes:
a first transmitting unit, configured to transmit first target configuration information, where the first target configuration information is used to indicate one or more NZP-CSI-RS resources in the NZP-CSI-RS resource set as PRS resources.
Optionally, the one or more NZP-CSI-RS resources as PRS resources correspond to the same antenna port and the same transmission beam.
Optionally, the first sending unit is further configured to:
transmitting first target configuration information through RRC signaling;
sending first target configuration information through MAC signaling;
the first target configuration information is transmitted through DCI signaling.
Optionally, the sending module 901 further includes:
a second transmitting unit, configured to transmit second target configuration information, where the second target configuration information is used to configure PRS resources in the PRS resource set.
Optionally, the second target configuration information includes at least one of:
resource configuration identification corresponding to PRS resources;
period information and slot offset information of the PRS resources;
resource mapping information of PRS resources;
power control information of PRS resources;
scrambling code identification information used for generating PRS resources;
BWP information corresponding to PRS resources;
QCL information of PRS resources.
Optionally, the resource mapping information includes at least one of: antenna port information, time-frequency position information, frequency domain density and bandwidth information.
Optionally, the frequency domain density of at least one PRS resource included in each set of PRS resources is the same.
Optionally, the network-side device 900 further includes:
a determining module, configured to determine that the PRS resource is in N according to the period information and the slot offset information of the PRS resourcePRSTransmitting in continuous downlink time slots;
in NPRSIn a first one of the consecutive downlink time slots:
wherein the content of the first and second substances,
number of slots, n, included in a radio frame corresponding to a target parameter numerologyfIs the radio frame number, nsIs the number of time slots, Δ, in a radio framePRSTime slot offset information for PRS resources, TPRSMod is the modulo operation for the period information of the PRS resource.
Optionally, the second sending unit is further configured to:
sending second target configuration information through RRC signaling;
sending second target configuration information through MAC signaling;
and sending the second target configuration information through DCI signaling.
Optionally, the sending module 901 further includes:
a determining unit, configured to determine a target PRS resource mapping pattern according to the positioning performance indicator;
a third transmitting unit, configured to transmit one or more PRS resource sets according to the target PRS resource mapping pattern.
Optionally, the positioning performance indicator comprises: positioning accuracy index and positioning delay index.
Optionally, the determining unit is further configured to:
determining a first PRS resource mapping pattern with the frequency domain density meeting the positioning accuracy index as a target PRS resource mapping pattern;
and determining a second PRS resource mapping pattern of which the number of occupied OFDM symbols accords with the positioning delay index as a target PRS resource mapping pattern.
Optionally, the target PRS resource mapping pattern is diagonal or anti-diagonal in one slot.
The network side device 900 provided in the embodiment of the present invention can implement each process implemented by the network side device in the method embodiment of fig. 2, and is not described here again to avoid repetition.
Fig. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. The terminal device 1000 shown in fig. 10 includes:
a receiving module 1001 configured to receive one or more PRS resource sets, where each PRS resource set includes at least one PRS resource.
Optionally, the PRS resource set is an NZP-CSI-RS resource set.
Optionally, the receiving module 1001 further includes:
a first receiving unit, configured to receive first target configuration information, where the first target configuration information is used to indicate one or more NZP-CSI-RS resources in a NZP-CSI-RS resource set as PRS resources.
Optionally, the receiving module 1001 further includes:
a second receiving unit, configured to receive the one or more NZP-CSI-RS resources as PRS resources, where the one or more NZP-CSI-RS resources as PRS resources correspond to a same antenna port and a same transmission beam.
Optionally, the first receiving unit is further configured to:
receiving first target configuration information through RRC signaling;
receiving first target configuration information through MAC signaling;
the first target configuration information is received through DCI signaling.
Optionally, the receiving module 1000 further comprises:
a third receiving unit, configured to receive second target configuration information, where the second target configuration information is used to indicate configuration information corresponding to PRS resources in the PRS resource set.
Optionally, the second target configuration information includes at least one of:
resource configuration identification corresponding to PRS resources;
period information and slot offset information of the PRS resources;
resource mapping information of PRS resources;
power control information of PRS resources;
scrambling code identification information used for generating PRS resources;
BWP information corresponding to PRS resources;
QCL information of PRS resources.
Optionally, the resource mapping information includes at least one of:
port information, time-frequency position information, frequency domain density, and bandwidth information.
Optionally, the frequency domain density of at least one PRS resource included in each set of PRS resources is the same.
Optionally, the third receiving unit is further configured to:
receiving second target configuration information through RRC signaling;
receiving second target configuration information through MAC signaling;
and receiving second target configuration information through DCI signaling.
The terminal device 1000 according to the embodiment of the present invention can implement each process implemented by the terminal device in the method embodiment of fig. 8, and is not described herein again to avoid repetition.
Fig. 11 is a schematic structural diagram of another network-side device according to an embodiment of the present invention. The network side device 1100 shown in fig. 11 is capable of implementing the details of the method embodiment of fig. 2 and achieving the same effect. As shown in fig. 11, the network-side device 1100 includes: a processor 1101, a transceiver 1102, a memory 1103, a user interface 1104, and a bus interface, wherein:
in this embodiment of the present invention, the network side device 1100 further includes: a computer program stored on the memory 1103 and executable on the processor 1101, the computer program, when executed by the processor 1101, implementing the steps of:
and transmitting one or more PRS resource sets, wherein each PRS resource set comprises at least one PRS resource.
In fig. 11, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1101, and various circuits, represented by memory 1103, 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 1102 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 1104 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1103 may store data used by the processor 1101 in performing operations.
The network side device 1100 can implement each process implemented by the network side device in the foregoing method embodiment of fig. 2, and details are not described here again to avoid repetition.
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 method embodiment in fig. 2, 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.
Fig. 12 is a schematic structural diagram of another terminal device according to an embodiment of the present invention. The terminal apparatus 1200 shown in fig. 12 includes: at least one processor 1201, memory 1202, at least one network interface 1204, and a user interface 1203. The various components in terminal device 1200 are coupled together by a bus system 1205. It is understood that bus system 1205 is used to enable connected communication between these components. Bus system 1205 includes, in addition to a data bus, a power bus, a control bus, and a status signal bus. But for clarity of illustration the various buses are labeled as bus system 1205 in figure 12.
The user interface 1203 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 1202 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an electrically Erasable Programmable Read-Only Memory (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 (SRAM, Static RAM), Dynamic random access memory (DRAM, Dynamic RAM), Synchronous Dynamic random access memory (SDRAM, Synchronous DRAM), Double Data Rate Synchronous Dynamic random access memory (DDRSDRAM, Double Data Rate SDRAM), Enhanced Synchronous Dynamic random access memory (ESDRAM, Enhanced SDRAM), Synchronous link Dynamic random access memory (SLDRAM, Synch link DRAM), and Direct memory bus random access memory (DRRAM, Direct Rambus RAM). The memory 1202 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 1202 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 12021 and application programs 12022.
The operating system 12021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application 12022 contains various applications such as a Media Player (Media Player), a Browser (Browser), and the like, and is used to implement various application services. A program implementing the method of an embodiment of the present invention may be included in application 9022.
In this embodiment of the present invention, the terminal device 1200 further includes: a computer program stored on the memory 1202 and executable on the processor 1201, the computer program when executed by the processor 1201 performing the steps of:
one or more PRS resource sets are received, wherein each PRS resource set comprises at least one PRS resource.
The method disclosed by the embodiment of the invention can be applied to the processor 1201 or implemented by the processor 1201. The processor 1201 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 1201. The Processor 1201 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, or discrete hardware components. 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 1202, and the processor 1201 reads the information in the memory 1202 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 1201, performs the steps of the method embodiment as shown in fig. 8.
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 units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, 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.
The terminal device 1200 can implement each process implemented by the terminal device in the foregoing method embodiment of fig. 8, and details are not described here again to avoid repetition.
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 method embodiment in fig. 8, 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.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (31)
1. A positioning reference signal configuration method is applied to network side equipment, and is characterized in that the method comprises the following steps:
transmitting one or more sets of Positioning Reference Signal (PRS) resources, wherein each set of PRS resources includes at least one PRS resource.
2. The method of claim 1, wherein the set of PRS resources are a set of non-zero power channel state information reference signals, NZP-CSI-RS resources.
3. The method of claim 2, wherein the method further comprises:
transmitting first target configuration information, wherein the first target configuration information is used to indicate one or more NZP-CSI-RS resources in the NZP-CSI-RS resource set as the PRS resource.
4. The method of claim 3, wherein the one or more NZP-CSI-RS resources as the PRS resources correspond to a same antenna port and a same transmit beam.
5. The method of claim 3, wherein the manner of sending the first target configuration information comprises at least one of:
transmitting the first target configuration information through Radio Resource Control (RRC) signaling;
sending the first target configuration information through Media Access Control (MAC) signaling;
and sending the first target configuration information through Downlink Control Information (DCI) signaling.
6. The method of claim 1 or 2, wherein prior to transmitting the one or more sets of PRS resources, the method further comprises:
transmitting second target configuration information, wherein the second target configuration information is used for configuring the PRS resources in the PRS resource set.
7. The method of claim 6, wherein the second target configuration information comprises at least one of:
a resource configuration identifier corresponding to the PRS resource;
period information and slot offset information of the PRS resource;
resource mapping information of the PRS resource;
power control information of the PRS resource;
scrambling code identification information used for generating the PRS resources;
BWP information of a part of bandwidth corresponding to the PRS resource;
quasi co-located QCL information of the PRS resource.
8. The method of claim 7, wherein the resource mapping information comprises at least one of: antenna port information, time-frequency position information, frequency domain density and bandwidth information.
9. The method of claim 8, wherein the frequency-domain density of the at least one PRS resource included in each set of PRS resources is the same.
10. The method of claim 7, wherein the method further comprises:
determining the PRS resource is in N according to the period information and the time slot offset information of the PRS resourcePRSTransmitting in continuous downlink time slots;
in said NPRSIn a first one of the consecutive downlink time slots:
wherein the content of the first and second substances,
time slots contained in a radio frame corresponding to a target parameter numerologyNumber, nfIs the radio frame number, nsIs the number of time slots, Δ, in a radio framePRSTime slot offset information, T, for the PRS resourcePRSMod is the modulo operation for the period information of the PRS resource.
11. The method of claim 6, wherein the manner of sending the second target configuration information comprises at least one of:
transmitting the second target configuration information through RRC signaling;
sending the second target configuration information through MAC signaling;
and sending the second target configuration information through DCI signaling.
12. The method of claim 1 or 2, wherein transmitting one or more sets of PRS resources comprises:
determining a target PRS resource mapping pattern according to the positioning performance index;
transmitting the one or more PRS resource sets in accordance with the target PRS resource mapping pattern.
13. The method of claim 12, wherein the locating performance indicators comprises: positioning accuracy index and positioning delay index.
14. The method of claim 13, wherein determining a target PRS resource mapping pattern based on a positioning performance indicator comprises at least one of:
determining a first PRS resource mapping pattern with a frequency domain density meeting the positioning accuracy index as the target PRS resource mapping pattern;
and determining a second PRS resource mapping pattern, the number of which occupies the OFDM symbols of the OFDM conforms to the positioning delay index, as the target PRS resource mapping pattern.
15. The method of claim 12, wherein the target PRS resource mapping pattern is diagonal or anti-diagonal in one slot.
16. A positioning reference signal configuration method is applied to terminal equipment, and is characterized by comprising the following steps:
one or more PRS resource sets are received, wherein each PRS resource set comprises at least one PRS resource.
17. The method of claim 16, wherein the set of PRS resources is a set of NZP-CSI-RS resources.
18. The method of claim 17, wherein the method further comprises:
receiving first target configuration information, wherein the first target configuration information is used to indicate one or more NZP-CSI-RS resources in the NZP-CSI-RS resource set as the PRS resource.
19. The method of claim 18, wherein the method further comprises:
receiving the one or more NZP-CSI-RS resources as the PRS resources, wherein the one or more NZP-CSI-RS resources as the PRS resources correspond to a same antenna port and a same transmission beam.
20. The method of claim 18, wherein the manner of receiving the first target configuration information comprises at least one of:
receiving the first target configuration information through RRC signaling;
receiving the first target configuration information through MAC signaling;
receiving the first target configuration information through DCI signaling.
21. The method of claim 16 or 17, wherein the method further comprises:
receiving second target configuration information, wherein the second target configuration information is used for indicating configuration information corresponding to the PRS resources in the PRS resource set.
22. The method of claim 21, wherein the second target configuration information comprises at least one of:
a resource configuration identifier corresponding to the PRS resource;
period information and slot offset information of the PRS resource;
resource mapping information of the PRS resource;
power control information of the PRS resource;
scrambling code identification information used for generating the PRS resources;
BWP information corresponding to the PRS resource;
QCL information of the PRS resources.
23. The method of claim 22, wherein the resource mapping information comprises at least one of:
port information, time-frequency position information, frequency domain density, and bandwidth information.
24. The method of claim 23, wherein the frequency-domain density of the at least one PRS resource included in each set of PRS resources is the same.
25. The method of claim 21, wherein the manner of receiving the second target configuration information comprises at least one of:
receiving the second target configuration information through RRC signaling;
receiving the second target configuration information through MAC signaling;
receiving the second target configuration information through DCI signaling.
26. A network-side device, comprising:
a sending module, configured to send one or more PRS resource sets, where each PRS resource set includes at least one PRS resource.
27. A network-side device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the positioning reference signal configuration method according to any of claims 1 to 15.
28. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the positioning reference signal configuration method according to any one of claims 1 to 15.
29. A terminal device, comprising:
a receiving module, configured to receive one or more PRS resource sets, where each PRS resource set includes at least one PRS resource.
30. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the positioning reference signal configuration method according to any of claims 16 to 25.
31. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the positioning reference signal configuration method according to any one of claims 16 to 25.
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| CN201810689549.4A CN110661601B (en) | 2018-06-28 | 2018-06-28 | Positioning reference signal configuration method, network side equipment and terminal equipment |
| PCT/CN2019/093253 WO2020001532A1 (en) | 2018-06-28 | 2019-06-27 | Method for configuring positioning reference signal, and network side device and terminal device |
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| WO2020001532A1 (en) | 2020-01-02 |
| CN110661601B (en) | 2020-09-22 |
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