Reference signal configuration and positioning method, device and storage mediumTechnical Field
The embodiments of the present invention relate to, but not limited to, the field of communications, and in particular, but not limited to, a method, an apparatus, and a storage medium for configuring and positioning a reference signal.
Background
The need for location from commercial services and emergency call management has driven the development of location in wireless networks. The third generation partnership project long term evolution (3GPP LTE) introduced support for positioning since release 9.
The Global Positioning System (GPS) can support the requirement of outdoor positioning well, but the effect of GPS positioning is severely affected in some indoor and outdoor locations where satellite signals are blocked. Such scenarios require other positioning methods. The 3GPP introduced a positioning method based on Observed time difference of Arrival (OTDOA) of downlink signals from release 9. The user equipment measures times of Arrival (TOA, Time of Arrival) of signals transmitted from a plurality of base stations at its own location. The arrival Time of the adjacent cell signal is subtracted from the arrival Time of the reference base station to obtain a Reference Signal Time Difference (RSTD), and the position of the last UE can be obtained from the arrival Time differences between the plurality of cells and the reference cell.
In principle any downstream signal can be used for the measurement. However, OTDOA requires that the user can measure signals from multiple cells simultaneously, which requires that the measured signals have good audibility, and the existing reference signals in the current 5G standard can meet this requirement to some extent, but the effect of direct positioning is still not ideal due to time domain density and bandwidth configuration.
Disclosure of Invention
The reference signal configuration and positioning method, device and storage medium provided by the embodiments of the present invention mainly solve the technical problem that the positioning accuracy is not high due to limited audibility of the reference signal used for positioning in the related art, and to solve the technical problem, the embodiments of the present invention provide a reference signal configuration method, including:
determining available TRS transmission resources which are currently available for transmitting a tracking reference signal TRS;
sending the available TRS sending resources to a positioning server;
receiving TRS suggested configuration information which is sent by the positioning server and determined according to the available TRS sending resources;
configuring a TRS resource for transmitting a TRS based on the TRS proposed configuration information; the TRS is configured to determine a location of the TRS by the UE.
The embodiment of the invention also provides a reference signal configuration method, which comprises the following steps:
respectively receiving available TRS transmission resources transmitted by each network element within a preset management range; the TRS transmission resource is used for a network element to transmit TRS;
determining TRS suggested configuration information by combining the available TRS transmission resources of each network element;
respectively sending the TRS suggested configuration information to each network element; the TRS suggested configuration information is used to indicate that each network element configures a TRS resource for transmitting a TRS.
The embodiment of the invention also provides a positioning method based on the reference signal, which comprises the following steps:
receiving TRS suggested configuration information sent by a positioning server or each network element within a preset management range of the positioning server; the TRS suggested configuration information is used to indicate that each network element configures a TRS resource for sending a TRS;
and performing TRS detection according to the TRS suggested configuration information, and determining the position of the TRS.
The embodiment of the invention also provides a reference signal configuration device, which comprises:
a first determining module, configured to determine available TRS transmission resources currently available for transmitting a tracking reference signal TRS;
a first sending module, configured to send the available TRS sending resource to a location server;
a first receiving module, configured to receive TRS suggested configuration information determined according to the available TRS transmission resources and sent by the location server;
a configuration module for configuring a TRS resource for transmitting a TRS based on the TRS suggested configuration information; the TRS is configured to determine a location of the TRS by the UE.
The embodiment of the invention also provides a reference signal configuration device, which comprises:
the second receiving module is used for respectively receiving available TRS transmission resources sent by each network element within a preset management range; the TRS transmission resource is used for a network element to transmit TRS;
a second determining module, configured to determine TRS suggested configuration information in combination with the available TRS transmission resources of each network element;
a second sending module, configured to send the TRS suggested configuration information to each network element respectively; the TRS suggested configuration information is used to indicate that each network element configures a TRS resource for transmitting a TRS.
The embodiment of the invention also provides a positioning device based on the reference signal, which comprises:
a third receiving module, configured to receive TRS suggested configuration information sent by a positioning server or each network element within a preset management range of the positioning server; the TRS suggested configuration information is used to indicate that each network element configures a TRS resource for sending a TRS;
and the detection module is used for performing TRS detection according to the TRS suggested configuration information and determining the position of the detection module.
The embodiment of the invention also provides a network element, which comprises a first processor, a first memory and a first communication bus;
the first communication bus is used for realizing connection communication between the first processor and the first memory;
the first processor is configured to execute one or more programs stored in the first memory to implement the steps of the reference signal configuration method applied to the network element side as described above.
The embodiment of the invention also provides a positioning server, which comprises a second processor, a second memory and a second communication bus;
the second communication bus is used for realizing connection communication between the second processor and the second memory;
the second processor is configured to execute one or more programs stored in the second memory to implement the steps of the reference signal configuration method applied to the positioning server side as described above.
The embodiment of the invention also provides the UE, which comprises a third processor, a third memory and a third communication bus;
the third communication bus is used for realizing connection communication between the third processor and the third memory;
the third processor is configured to execute one or more programs stored in the third memory to implement the steps of the reference signal based positioning method as described above.
Embodiments of the present invention also provide a computer-readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps of any of the methods described above.
The invention has the beneficial effects that:
according to the reference signal configuration and positioning method, device and storage medium provided by the embodiment of the invention, each network element in the management range of the positioning server respectively determines available TRS sending resources which can be used for sending TRS currently, and sends the available TRS sending resources to the positioning server; the positioning server receives available TRS transmission resources sent by each network element respectively, determines TRS suggested configuration information by combining the available TRS transmission resources of each network element, and then sends the TRS suggested configuration information to each network element; each network element configures TRS resources for sending TRSs based on the TRS proposal configuration information; and the UE performs TRS detection according to TRS suggested configuration information sent by the positioning server or each network element so as to determine the position of the UE. Under the condition of not increasing the complexity of the system obviously, the existing reference signal mechanism is adjusted, the audibility of the reference signal is improved, and the positioning accuracy is improved.
Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic flowchart of a reference signal configuration method applied to a network element side according to a first embodiment of the present invention;
fig. 2 is a flowchart illustrating a positioning method applied to a UE side according to a first embodiment of the present invention;
fig. 3 is a flowchart illustrating a reference signal configuration method applied to a positioning server according to a second embodiment of the present invention;
fig. 4 is a schematic diagram of available resources of a network element according to a third embodiment of the present invention;
fig. 5 is a schematic diagram of available resources of another network element according to a third embodiment of the present invention;
fig. 6 is a schematic flowchart of a positioning method applied to a system side according to a fourth embodiment of the present invention;
fig. 7 is a schematic structural diagram of a reference signal configuration apparatus applied to a network element according to a fifth embodiment of the present invention;
fig. 8 is a schematic structural diagram of a reference signal configuration apparatus applied to a positioning server according to a fifth embodiment of the present invention;
fig. 9 is a schematic structural diagram of a positioning apparatus applied to a UE according to a fifth embodiment of the present invention;
fig. 10 is a schematic structural diagram of a network element according to a sixth embodiment of the present invention;
fig. 11 is a schematic structural diagram of a positioning server according to a sixth embodiment of the present invention;
fig. 12 is a schematic structural diagram of a UE according to a sixth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
in order to solve the technical problem of low positioning accuracy caused by limited audibility of a reference signal used for positioning in the related art, an embodiment of the present invention provides a reference signal configuration method, where the reference signal configuration method provided in this embodiment is applied to a network element side, please refer to fig. 1, which includes:
s101, determining available TRS transmission resources currently available for transmitting the tracking reference signal TRS.
As an implementation manner of this embodiment, the available TRS transmission resource is a resource that can be used for network element full-band TRS transmission.
Optionally, the available TRS transmission resources include: time domain resources for which synchronization signal/physical broadcast channel block (SSB, SS/PBCH block) transmission is not performed.
As an implementation manner of this embodiment, the time domain resource that is not subjected to SSB transmission includes at least one of the following: static available resources, dynamic available resources; the static available resources are time domain resources which do not carry out SSB sending all the time, and the dynamic available resources are time domain resources which do not carry out SSB sending at present and have SSB sending capability. In general, the frequency band of the available resources below 3Ghz can be the last 3ms of each half frame, while the frequency band above 3Ghz and below 6Ghz is the last 1ms, and there is no SSB transmission all the time, which is called static available resources.
And S102, sending the available TRS sending resources to a positioning server.
In this embodiment, the network element reports the available TRS transmission resource to the positioning server, and the positioning server integrates the available resources of each network element to determine TRS configuration information for positioning.
S103, TRS proposal configuration information which is sent by the positioning server and determined according to available TRS sending resources is received.
In some embodiments of this embodiment, the TRS suggested configuration information includes at least one of the following: TRS resource (TRS resource) configuration information, TRS bundle (set) configuration information, TRS transmission period (T)CSI-RS) Configuration information, slot offset (T)offset) Configuration information, Cyclic Prefix (CP) type configuration information, subcarrier spacing configuration information, slot number configuration information, time domain configuration information of TRS resources in each slot, and bandwidth.
Optionally, the time domain configuration information of the TRS resource in each time slot is scalable. I.e., by extending the time domain configuration information of the TRS to support more intensive TRS transmissions.
In some embodiments of this embodiment, the extending the time domain configuration information of the TRS resource in each time slot includes: a symbol position for transmitting the TRS and/or a number of slots for consecutive transmitting the TRS is increased.
It should be noted that, in some embodiments in this embodiment, after the location server determines the TRS recommended configuration information, the location server may send the TRS recommended configuration information to the UE through an LTE Positioning Protocol (LPP) or NRPP (protocol after future LPP evolution) message, or of course, the network element may send the TRS recommended configuration information to the UE through an RRC message after receiving the TRS recommended configuration information sent by the location server.
S104, configuring TRS resources for transmitting TRS based on the TRS proposal configuration information; the TRS is configured to determine a location of the user equipment UE.
In this embodiment, the TRS resource used for sending the TRS is configured according to the TRS configuration information sent by the positioning server, so that the audibility of the TRS sent by the network element is effectively improved, and the accuracy of the UE in positioning through the TRS is improved.
In some implementations of this embodiment, the network element configures a bandwidth of the TRS resource for transmitting the TRS to be a full band based on the TRS proposal configuration information.
Optionally, configuring the bandwidth of the TRS resource for transmitting the TRS to be a full band based on the TRS suggested configuration information includes: resource blocks at both ends of the maximum supported bandwidth are left free and set as guard bands based on the TRS proposal configuration information, and the remaining bandwidth is used for TRS resources for transmitting TRS. It should be understood that, the full frequency band is obtained by removing one Resource Block (RB) from the top and bottom of the maximum bandwidth supported by the network element as a guard band, and all remaining bandwidths in the frequency domain are used as TRS resources.
In some embodiments of this embodiment, after receiving the TRS suggested configuration information determined according to the available TRS transmission resources and sent by the positioning server, the method further includes: generating TRS actual configuration information when the actual configuration condition of the TRS resources does not accord with the TRS resources configured based on the TRS suggested configuration information; and sending the TRS actual configuration information to a positioning server. In practical applications, the network element does not perform the configuration of the TRS resources according to the TRS recommended configuration information sent by the Positioning server under all conditions, so that the configured TRS resources do not match the expected TRS resources, and therefore the network element needs to send the actual configuration information of the TRS used in the actual configuration of the TRS to the Positioning server through an NR Positioning Protocol a (NRPPa) message under such a condition.
It should be noted that, in this embodiment, the method for the UE to perform positioning based on the acquired reference signal includes the following steps:
s201, receiving TRS proposal configuration information sent by a positioning server or network elements within a preset management range of the positioning server; the TRS suggested configuration information is used to indicate that each network element configures a TRS resource for transmitting a TRS.
S202, TRS detection is carried out according to the TRS suggested configuration information, and the position of the TRS is determined.
The UE may select a corresponding frequency band according to a portion of Bandwidth (BWP, Bandwidth Part) range supported by the UE for TRS detection, where the TRS suggested configuration information is sent from the location server or one of the network elements within the range managed by the location server.
By the reference signal configuration method provided by the embodiment of the invention, in some implementation processes, each network element in the management range of the positioning server respectively determines available TRS sending resources which can be used for sending TRS currently, and sends the available TRS sending resources to the positioning server; respectively receiving available TRS transmission resources transmitted by each network element by a positioning server, determining TRS suggested configuration information by combining the available TRS transmission resources of each network element, and then transmitting the TRS suggested configuration information to each network element; each network element configures TRS resources for sending TRSs based on the TRS proposal configuration information; and the UE performs TRS detection according to TRS suggested configuration information sent by the positioning server or each network element so as to determine the position of the UE. Under the condition of not increasing the complexity of the system obviously, the existing reference signal mechanism is adjusted, the audibility of the reference signal is improved, and the positioning accuracy is improved.
Example two:
in order to solve the technical problem of low positioning accuracy caused by limited audibility of reference signals used for positioning in the related art, an embodiment of the present invention provides a reference signal configuration method, where the reference signal configuration method provided in this embodiment is applied to a positioning server side, as shown in fig. 3, the method includes:
s301, respectively receiving available TRS transmission resources transmitted by each network element within a preset management range; the TRS transmission resource is used for a network element to transmit a TRS.
In the embodiment of the present invention, a network element determines, according to current resource allocation of each channel and a reference signal of the network element, a resource currently available for transmitting a TRS. And, optionally, the available TRS transmission resources include: time domain resources for which synchronization signal/physical broadcast channel block SSB transmission is not performed. In some embodiments, the time domain resources for which SSB transmission is not performed include at least one of: static available resources, dynamic available resources; the static available resources are time domain resources which do not carry out SSB sending all the time, and the dynamic available resources are time domain resources which do not carry out SSB sending at present and have SSB sending capability.
And S302, determining TRS proposal configuration information by combining the available TRS transmission resources of each network element.
S303, sending the TRS suggested configuration information to each network element respectively; the TRS suggested configuration information is used to indicate that each network element configures a TRS resource for transmitting a TRS.
The Positioning server synthesizes the available resources of each network element in the management range, and sends the information to the TRS proposal configuration information used for Positioning by the network element through an NR Positioning Protocol A (NRPPa).
In some embodiments of this embodiment, the TRS suggested configuration information includes at least one of: TRS resource (TRS resource) configuration information, TRS bundle (set) configuration information, TRS transmission period (T)CSI-RS) Configuration information, slot offset (T)offset) Configuration information, Cyclic Prefix (CP) type configuration information, subcarrier spacing configuration information, slot number configuration information, time domain configuration information of TRS resources in each slot, and bandwidth.
It should be noted that, optionally, the time domain configuration information of the TRS resource in each time slot is scalable. I.e., by extending the time domain configuration information of the TRS to support more intensive TRS transmissions.
In some embodiments of this embodiment, the extending the time domain configuration information of the TRS resource in each time slot includes: a symbol position for transmitting the TRS and/or a number of slots for consecutive transmitting the TRS is increased.
In practical applications, after determining the TRS recommended configuration information by combining the available TRS transmission resources of each network element, the Positioning server may send the TRS recommended configuration information to the UE through an LTE Positioning Protocol (LPP) or NRPP (Protocol after future LPP evolution). Of course, it should be understood that, in practical applications, the TRS suggested configuration information may also be sent to the network element by the positioning server, and then sent to the UE by the network element through an RRC message.
In some embodiments of this embodiment, after sending the TRS suggested configuration information to each network element, the method further includes: and receiving TRS actual configuration information sent by each network element when the actual configuration condition of the TRS resources does not accord with the TRS resources configured based on the TRS suggested configuration information.
In practical applications, the network element does not perform the configuration of the TRS resources according to the TRS recommended configuration information sent by the Positioning server under all conditions, so that the configured TRS resources do not match the expected TRS resources, and therefore the network element needs to send the actual TRS configuration information used in the actual TRS configuration to the Positioning server by providing an NR Positioning Protocol a (NRPPa) message under such conditions.
By the reference signal configuration method provided by the embodiment of the invention, in some implementation processes, each network element in the management range of the positioning server respectively determines available TRS sending resources which can be used for sending TRS currently, and sends the available TRS sending resources to the positioning server; respectively receiving available TRS transmission resources transmitted by each network element by a positioning server, determining TRS suggested configuration information by combining the available TRS transmission resources of each network element, and then transmitting the TRS suggested configuration information to each network element; each network element configures TRS resources for sending TRSs based on the TRS proposal configuration information; and the UE performs TRS detection according to TRS suggested configuration information sent by the positioning server or each network element so as to determine the position of the UE. Under the condition of not increasing the complexity of the system obviously, the existing reference signal mechanism is adjusted, the audibility of the reference signal is improved, and the positioning accuracy is improved.
Example three:
in order to better understand the present invention, the present embodiment describes the reference signal configuration method in detail with several specific examples.
In an implementation manner of this embodiment, as shown in fig. 4, a schematic diagram of available resources of a network element provided in this embodiment is shown, where fig. 4a is a network element aiFig. 4b is a schematic diagram of available resources of network element biSchematic diagram of available resources. Suppose that the frequency band of the network element managed by one positioning server is below 3Ghz, the bandwidth of all network elements is 50Mhz, and half of the network elements aiAnd sending the SSB at the interval of 30Khz subcarriers, wherein the sending period of the SSB is 5ms, the sending mode of the SSB is case C, and the number of the SSBs sent in one period is 4. The other half of the network element biAnd sending the SSBs at the interval of 30Khz subcarriers, wherein the sending period of the SSBs is 5ms, the number of the SSBs sent in one period is 2, and the sending positions of the SSBs are respectively the 1 st and 2 nd resources reserved for the SSBs. According to the inventionIn the reference signal configuration method, in the frequency band below 3Ghz, the static available resource is the last 3ms of each half frame, as shown in fig. 4, which is the network element provided in one implementation of this embodiment, and for the network element aiIn other words, the static available resources are the last 6 slots of each field, and the dynamic available resources are the 3 rd and 4 th slots of each field. To network element biThe static available resource is 6 time slots after each half frame, and the dynamic resource is the 2 nd, 3 rd and 4 th time slots of each half frame. The base station reports to the Positioning server through an NR Positioning Protocol a (NRPPa) message, and the Positioning server obtains the resources that can be uniformly configured in the area as the 3 rd to 10 th timeslots of each half frame. Corresponding to the time slots numbered 2-9, 12-19 in one system frame. The Positioning server sends TRS configuration information used for Positioning to each network element through NR Positioning Protocol A (NRPPa) information, and the TRS configuration information is sent at intervals of 30Khz subcarriers, is of a conventional CP type and has a period TCSI-RS20 slots, offset ToffsetIs 47 according to the formulaWherein,is the number of time slots, n, contained in a system framefIs the number of the system frame,the time slot number in a system frame, Toffset is a time slot offset, and TCSI-RS is a TRS transmission period, so that a time slot numbered 7 in each frame with a singular number can be calculated as a starting time slot for transmitting a positioning TRS, two consecutive time slots are transmitted, the symbol position for transmitting the TRS in each time slot is {4,8}, {5,9}, {6,10}, and the bandwidth is 131 Physical Resource Blocks (PRB), and an RB is empty in each two segments of the network element bandwidth. And each network element adopts the TRS configuration to each UE according to the received configuration and sends a TRS signal. And the positioning server sends TRS configuration information of each current network element of the UE through an LPP or NRPP message.
In another embodiment of the present inventionIn an embodiment, other scenarios are the same as the first embodiment of this embodiment, and different from the first embodiment, the positioning server configures each network element to send the TRS used for positioning, the extended CP type, and the period T at an interval of 60Khz subcarriersCSI-RSIs 80 slots, offset ToffsetAnd 47, the 7 th slot of the odd numbered systematic frame is obtained as the starting position, two slots are transmitted continuously, the symbol position of the transmission TRS in each slot is {4,8}, {5,9}, {6,10}, and the bandwidth is 63 PRB.
In another implementation manner of this embodiment, the other scenarios are the same as the first implementation manner of this embodiment, and different from the first implementation manner, the Positioning server sends the TRS configuration information used for Positioning to each network element through an NR Positioning protocol a (NRPPa) message, and sends the TRS configuration information at 30Khz subcarrier intervals, in a normal CP type, with a period TCSI-RSIs 20 slots, offset ToffsetIs 47, again according to the formula in the first embodimentThe slot numbered 7 in each frame with the odd number calculated is the starting slot of the transmission positioning TRS, 4 consecutive slots are transmitted, the symbol position of the transmission TRS in each slot is {3,7}, {4,8}, {5,9}, {6,10}, {7,11}, and {8,12} bandwidth is 131 PRBs, and there is one RB in each segment of the network element bandwidth. And each network element adopts the TRS configuration to each UE according to the received configuration and sends a TRS signal. And the positioning server sends the TRS configuration of each current network element of the UE to the positioning server through LPP or NRPP information.
In yet another implementation manner of this embodiment, as shown in fig. 5, a schematic diagram of available resources of a network element provided in this embodiment is shown, where fig. 5a is a network element ciFig. 5b is a schematic diagram of available resources of network element diSchematic diagram of available resources. Suppose that the frequency band of the network element managed by one positioning server is more than 3Ghz, the bandwidth of all the network elements is 100Mhz, wherein half of the network elements ciAnd sending the SSB at the interval of 30Khz subcarriers, wherein the sending period of the SSB is 5ms, the mode is case C, and the number of the SSBs sent in one period is 8. The other half of the network element diWith 15Khz sub-carriersAnd SSBs are sent at intervals, the SSB sending period is 5ms, the number of the SSBs sent in one period is 4, and the SSBs are sent in the first 2 time slots of each half frame. According to the reference signal configuration method provided by the invention, in the frequency band above 3Ghz, the static available resource is the last 1ms of each half frame, and the network element c is pairediFor example, the static available resources are the last 2 slots of each field, and the dynamic available resources are the 5 th, 6 th, 7 th, and 8 th slots of each field. To network element diThe static available resource is the last 1 time slot of each half frame, and the dynamic resource is the 3 rd and 4 th time slots of each half frame. The positioning server gets the available resources for each field to be the last 3ms of each field. If the TRS is transmitted at 30Khz, the available slots are numbered 4-9, 14-19 for each field. The positioning server sends TRS configuration information used for positioning to the network element, and the configuration is the same as the first implementation manner of this embodiment.
Fourth embodiment
In order to better understand the present invention, this embodiment describes a positioning method based on a reference signal with a specific example, and fig. 6 is a flowchart of the positioning method based on a reference signal applied to a system according to a fourth embodiment of the present invention, where the positioning method based on a reference signal includes:
s601, the network element determines available TRS sending resources which can be used for sending TRS in full frequency band currently, and sends the available TRS sending resources to the positioning server.
And the network element determines the resources which can be used for transmitting the TRS in the full frequency band currently according to the current resource allocation conditions of each channel and the reference signal. The available TRS transmission resource may be a time domain resource for which SSB transmission is not performed.
S602, the positioning server receives the available TRS transmission resource sent by each network element within the preset management range.
S603, the positioning server determines TRS proposal configuration information by combining the available TRS sending resources of each network element.
Optionally, the TRS suggested configuration information includes at least one of: the information includes TRS resource (TRS resource) configuration information, TRS bundle (set) configuration information, TRS transmission period (TCSI-RS) configuration information, slot offset (Toffset) configuration information, Cyclic Prefix (CP) type configuration information, subcarrier spacing configuration information, slot number configuration information, time domain configuration information of TRS resources in each slot, and bandwidth.
S604, the positioning server sends TRS proposal configuration information to each network element and the UE.
It should be noted that, in practical applications, the method for the UE to obtain the TRS recommended configuration information may also be obtained from a network element, and is not limited to obtaining from a positioning server.
S605, the network element configures TRS resources for transmitting the TRS based on the received TRS proposed configuration information.
S606, the UE detects the TRS sent by each network element through the configured TRS resource based on the received TRS recommended configuration information, and determines its own location.
In this embodiment, the TRS resource used by the network element to send the TRS is configured according to the TRS configuration information sent by the positioning server, so that the audibility of the TRS sent by the network element is effectively improved, and the accuracy of the UE in positioning through the TRS is improved.
Example five:
referring to fig. 7, fig. 7 is a reference signal configuration apparatus applied to a network element according to an embodiment of the present invention, including: a first determining module 701, a first sending module 702, a first receiving module 703 and a configuring module 704;
the first determining module 701 is configured to determine available TRS transmission resources currently available for transmitting a tracking reference signal TRS;
a first sending module 702, configured to send an available TRS sending resource to a positioning server;
a first receiving module 703, configured to receive TRS suggested configuration information determined according to available TRS transmission resources and sent by a location server;
a configuration module 704 for configuring TRS resources for transmitting the TRS based on the TRS suggested configuration information; the TRS is configured to determine a location of the user equipment UE.
In this embodiment of the present invention, the first determining module 701 determines the resources currently available for the TRS according to the current resource allocation of each channel and the reference signal, and as an implementation manner of this embodiment, the available TRS transmission resources are resources available for full-band TRS transmission.
Optionally, the available TRS transmission resources include: time domain resources for which synchronization signal/physical broadcast channel block (SSB, SS/PBCH block) transmission is not performed.
As an implementation manner of this embodiment, the time domain resource that is not subjected to SSB transmission includes at least one of the following: static available resources, dynamic available resources; the static available resources are time domain resources which do not carry out SSB sending all the time, and the dynamic available resources are time domain resources which do not carry out SSB sending at present and have SSB sending capability. In general, the frequency band of the available resources below 3Ghz can be the last 3ms of each half frame, while the frequency band above 3Ghz and below 6Ghz is the last 1ms, and there is no SSB transmission all the time, which is called static available resources.
In this embodiment, the first sending module 702 reports the available TRS sending resources to the positioning server, and the positioning server integrates the available resources of each network element to determine the TRS configuration information for positioning. In some embodiments of this embodiment, the TRS suggested configuration information includes at least one of: TRS resource (TRS resource) configuration information, TRS bundle (set) configuration information, TRS transmission period (T)CSI-RS) Configuration information, slot offset (T)offset) Configuration information, Cyclic Prefix (CP) type configuration information, subcarrier spacing configuration information, slot number configuration information, time domain configuration information of TRS resources in each slot, and bandwidth.
Optionally, the time domain configuration information of the TRS resource in each time slot is scalable. I.e., by extending the time domain configuration information of the TRS to support more intensive TRS transmissions.
In some embodiments of this embodiment, the extending the time domain configuration information of the TRS resource in each time slot includes: a symbol position for transmitting the TRS and/or a number of slots for consecutive transmitting the TRS is increased.
It should be noted that, in some embodiments in this embodiment, after the location server determines the TRS recommended configuration information, the location server may send the TRS recommended configuration information to the UE through an LTE Positioning Protocol (LPP) or NRPP (protocol after future LPP evolution), or the network element may send the TRS recommended configuration information to the UE through an RRC message after receiving the TRS recommended configuration information sent by the location server by the first sending module 702.
In this embodiment, the TRS resource used by sending the TRS is configured by the configuration module 604 according to the TRS configuration information sent by the positioning server, so that the audibility of the TRS sent by the network element is effectively improved, and the accuracy of the UE in positioning through the TRS is improved.
In some implementations of this embodiment, the network element configures a bandwidth of the TRS resource for transmitting the TRS to be a full band based on the TRS proposal configuration information.
Optionally, configuring the bandwidth of the TRS resource for transmitting the TRS to be a full band based on the TRS suggested configuration information includes: resource blocks at both ends of the maximum supported bandwidth are left free and set as guard bands based on the TRS proposal configuration information, and the remaining bandwidth is used for TRS resources for transmitting TRS. It should be understood that, the full frequency band is obtained by removing one Resource Block (RB) from the top and bottom of the maximum bandwidth supported by the network element as a guard band, and all remaining bandwidths in the frequency domain are used as TRS resources.
In some embodiments of this embodiment, after receiving the TRS suggested configuration information determined according to the available TRS transmission resources and sent by the positioning server, the method further includes: generating TRS actual configuration information when the actual configuration condition of the TRS resources does not accord with the TRS resources configured based on the TRS suggested configuration information; and sending the TRS actual configuration information to a positioning server.
Referring to fig. 8, fig. 8 is a reference signal configuration apparatus applied to a positioning server according to an embodiment of the present invention, including: a second receiving module 801, a second determining module 802, and a second sending module 803;
the second receiving module 801 is configured to receive available TRS transmission resources sent by each network element within a preset management range respectively; the TRS transmission resource is used for the network element to transmit TRS;
a second determining module 802, configured to determine TRS suggested configuration information in combination with available TRS transmission resources of each network element;
a second sending module 803, configured to send the TRS suggested configuration information to each network element respectively; the TRS suggested configuration information is used to indicate that each network element configures a TRS resource for transmitting a TRS.
The network element determines the resources which can be currently used for sending the TRS according to the current resource allocation of each channel and the reference signal. As an implementation of this embodiment, the available TRS transmission resources are resources available for full-band transmission TRS. And, optionally, the available TRS transmission resources include: time domain resources for which synchronization signal/physical broadcast channel block SSB transmission is not performed. In some embodiments, the time domain resources for which SSB transmission is not performed include at least one of: static available resources, dynamic available resources; the static available resources are time domain resources which do not carry out SSB sending all the time, and the dynamic available resources are time domain resources which do not carry out SSB sending at present and have SSB sending capability.
Additionally, in some implementations of this embodiment, the TRS suggested configuration information includes at least one of: TRS resource (TRS resource) configuration information, TRS bundle (set) configuration information, TRS transmission period (T)CSI-RS) Configuration information, slot offset (T)offset) Configuration information, Cyclic Prefix (CP) type configuration information, subcarrier spacing configuration information, slot number configuration information, time domain configuration information of TRS resources in each slot, and bandwidth.
It should be noted that, optionally, the time domain configuration information of the TRS resource in each time slot is scalable. I.e., by extending the time domain configuration information of the TRS to support more intensive TRS transmissions.
In some embodiments of this embodiment, the extending the time domain configuration information of the TRS resource in each time slot includes: a symbol position for transmitting the TRS and/or a number of slots for consecutive transmitting the TRS is increased.
In practical applications, the second sending module 803 is further configured to send the TRS recommended configuration information to the UE through an LTE Positioning Protocol (LPP) or NRPP (Protocol after LPP evolution in the future) message. Of course, it should be understood that, in practical applications, the TRS suggested configuration information may also be sent to the network element by the second sending module 703, and then sent to the UE by the network element through an RRC message.
In some embodiments of this embodiment, the second receiving module 801 is further configured to receive TRS actual configuration information sent by each network element when the actual configuration of the TRS resource does not match the TRS resource configured based on the TRS proposed configuration information.
Referring to fig. 9, fig. 9 is a reference signal based positioning apparatus for a UE according to an embodiment of the present invention, including: a third receiving module 901 and a detecting module 902;
the third receiving module 901 is configured to receive the TRS suggested configuration information sent by the positioning server or each network element within the preset management range of the positioning server; the TRS suggested configuration information is used for indicating each network element to configure TRS resources for sending TRSs;
the detecting module 902 is configured to perform TRS detection according to the TRS recommended configuration information, so as to determine the location of the mobile terminal.
In this embodiment, the third receiving module 901 may select a corresponding frequency band according to a Part of Bandwidth (BWP, Bandwidth Part) range supported by itself for TRS detection, where the TRS suggested configuration information is sent from the location server or one of the network elements within the range managed by the location server.
The TRS resources used by the TRS sent by the network element are configured according to the TRS configuration information sent by the positioning server, so that the audibility of the TRS sent by the network element is effectively improved, and the precision of the UE in positioning through the TRS is improved.
Example six:
the embodiment of the present invention further provides a network element, as shown in fig. 10, which includes a first processor 1001, a first memory 1002, and a first communication bus 1003, where: the first communication bus 1003 is used for realizing connection communication between the first processor 1001 and the first memory 1002; the first processor 1001 is configured to execute one or more computer programs stored in the first memory 1002 to implement at least one step of the reference signal configuration method applied to the network element side in the above-described embodiment.
An embodiment of the present invention further provides a positioning server, as shown in fig. 11, which includes a second processor 1101, a second memory 1102, and a second communication bus 1103, where: the second communication bus 1103 is used for realizing connection communication between the second processor 1101 and the second memory 1102; the second processor 1101 is configured to execute one or more computer programs stored in the second memory 1102 to implement at least one step of the reference signal configuration method applied to the positioning server side in the above-described embodiments.
An embodiment of the present invention further provides a UE, as shown in fig. 12, which includes a third processor 1201, a third memory 1202, and a third communication bus 1203, where: the third communication bus 1203 is used for realizing connection communication between the third processor 1201 and the third memory 1202; the third processor 1201 is configured to execute one or more computer programs stored in the third memory 1202 to implement at least one step of the reference signal based positioning method applied to the UE side in the above-mentioned embodiments.
Embodiments of the present invention also provide a computer-readable storage medium including volatile or non-volatile, removable or non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, computer program modules or other data. Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other Memory technology, CD-ROM (Compact disk Read-Only Memory), Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer.
The computer-readable storage medium in this embodiment may be used to store one or more computer programs, and the one or more computer programs stored therein may be executed by a processor to implement at least one step of the method in the above-described embodiment one, and/or embodiment two, and/or embodiment three.
The present embodiment also provides a computer program, which can be distributed on a computer readable medium and executed by a computing device to implement at least one step of the method in the first embodiment, and/or the second embodiment, and/or the third embodiment; and in some cases at least one of the steps shown or described may be performed in an order different than that described in the embodiments above.
The present embodiments also provide a computer program product comprising a computer readable means on which a computer program as shown above is stored. The computer readable means in this embodiment may include a computer readable storage medium as shown above.
It will be apparent to those skilled in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software (which may be implemented in computer program code executable by a computing device), firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
In addition, communication media typically embodies computer readable instructions, data structures, computer program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to one of ordinary skill in the art. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.