Positioning configuration method and apparatus, and uplink positioning method and apparatus

Abstract

The present application relates to a positioning configuration method and apparatus, and an uplink positioning method and apparatus. The positioning configuration method comprises: sending a first request message to a distribution unit (DU), wherein the first request message comprises at least one of first SRS information and SRS positioning inquiry indication information in an inactive state, the first SRS information comprises at least one of a first SRS configuration and a bandwidth aggregation request indication, and the bandwidth aggregation request indication is used for acquiring one or more carrier aggregation configurations; and receiving a first response message from the distribution unit (DU), wherein the first response message comprises at least one of second SRS information and SRS configuration information in an inactive state, and the second SRS information comprises at least one of a second SRS configuration and a carrier aggregation configuration.

Description

Positioning configuration method, uplink positioning method and device

[0001] Related applications

[0002] The present application claims priority to the Chinese patent application No. 2024113445276, filed on September 25, 2024, entitled “Positioning configuration method, uplink positioning method and device”, and the Chinese patent application No. 2025109527494, filed on July 10, 2025, entitled “Positioning configuration method, uplink positioning method and device”, the contents of which are hereby incorporated by reference in their entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of wireless communication, in particular to a positioning configuration method, an uplink positioning method and a device. BACKGROUND

[0004] Currently, a sounding reference signal (SRS) is a signal used in a wireless communication system for uplink channel estimation. However, a conventional positioning method based on the SRS signal affects positioning measurement accuracy. SUMMARY

[0005] In a first aspect, the present application provides a positioning configuration method applied to a central unit (CU), the method comprising: sending a first request message to a distributed unit (DU), the first request message comprising at least one of first SRS information and non-active SRS positioning inquiry indication information; the first SRS information comprising at least one of first SRS configuration and bandwidth aggregation request indication; the bandwidth aggregation request indication being used to obtain one or more carrier aggregation configurations; receiving a first response message from the distributed unit (DU); the first response message comprising at least one of second SRS information and non-active SRS configuration information; the second SRS information comprising at least one of second SRS configuration and carrier aggregation configuration.

[0006] In one of the embodiments, the carrier aggregation configuration comprises one or more serving cell identifiers and BWP identifiers.

[0007] In one of the embodiments, the first SRS configuration comprises at least one of SRS transmission bandwidth, synchronization signal block (SSB) cell number information, system frame number (SFN) offset configuration; wherein the SSB cell number information is used to indicate the SSB number of a non-cell defined synchronization signal block (NCD-SSB) in one of the neighboring cells or the serving cell; the SRS transmission bandwidth comprises SRS transmission bandwidth corresponding to the first frequency range (FR1) or SRS transmission bandwidth corresponding to the second frequency range (FR2); and the SFN offset configuration comprises at least one of the offset of the SFN and the integer subframe offset.

[0008] In one of the embodiments, the SRS transmission bandwidth corresponding to the first frequency range FR1 includes at least one of 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 35MHz, 40MHz, 45MHz, 50MHz, 60MHz, 70MHz, 80MHz, 90MHz, 100MHz, and the SRS transmission bandwidth corresponding to the second frequency range FR2 includes at least one of 50MHz, 100MHz, 200MHz, 400MHz, 800MHz, 1600MHz.

[0009] In one of the embodiments, the first request message is a positioning information request message, and the first response message is a positioning information response message or a positioning information update message.

[0010] In one of the embodiments, the second SRS configuration includes at least one of at least one port configuration, at least one repetition factor, at least one SRS resource type configuration, at least one frequency hopping configuration, and at least one extended port configuration.

[0011] In one of the embodiments, the port configuration includes one of 1-port, 2-port, and 4-port configuration, and the extended port configuration includes 8-port configuration, and the 8-port configuration is to map 8 ports to two different subsets respectively based on non-time division multiplexing (TDM), and the different subsets are mapped to different symbols.

[0012] In one of the embodiments, the frequency hopping configuration includes at least one of overlap value, frequency hopping number, frequency hopping comb offset, SRS transmission duration, SRS transmission period, SRS offset, starting SFN where the SRS is located, frequency hopping repetition mode, frequency hopping cyclic shift, frequency hopping granularity.

[0013] In one of the embodiments, the SRS resource type configuration includes one of aperiodic configuration, semi-periodic configuration, and periodic configuration.

[0014] In one of the embodiments, the periodic configuration includes at least one of periodicity value, slot offset, and periodicity configuration of hyper frame, the aperiodic configuration includes slot offset, and the semi-periodic configuration includes at least one of periodicity value, slot offset, and periodicity configuration of hyper frame, and the periodicity configuration of hyper frame is to indicate whether the hyper frame is even hyper frame or odd hyper frame when the positioning SRS is transmitted.

[0015] In one of the embodiments, the repetition factor includes at least one of a plurality of parameter values; the plurality of parameter values are 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, respectively; the number of overlapping values include 0 RB, 1 RB, 2 RBs, and 4 RBs; the number of frequency hopping ranges from 1 to 6; the frequency hopping comb offset includes a frequency hopping identity and / or a frequency hopping sub-set; the frequency hopping identity ranges from 0 to 1023, and the frequency hopping sub-set includes a 2-comb transmission, a 4-comb transmission, or an 8-comb transmission.

[0016] In one of the embodiments, the inactive state SRS configuration information includes at least one of an inactive state SRS first configuration and an inactive state SRS second configuration; the inactive state SRS first configuration includes a configuration of SRS on a normal uplink (NUL) carrier, a configuration of SRS on a supplementary uplink (SUL) carrier, a bandwidth part (BWP) configuration of the NUL carrier, a BWP configuration of the SUL carrier, a TA timer in the inactive state, and a change threshold of a reference signal received power (RSRP) in the inactive state; and the inactive state SRS second configuration includes at least one of an inactive state SRS positioning aggregated bandwidth configuration, an SRS positioning transmission frequency hopping configuration, at least one inactive state active area pre-configuration, and at least one inactive state active area non-pre-configuration.

[0017] In one of the embodiments, the inactive state SRS positioning aggregated bandwidth configuration includes at least one of a subcarrier spacing and an SRS carrier frequency; the SRS carrier frequency represents a carrier frequency of a SRS resource set for bandwidth aggregation; and the inactive state active area pre-configuration includes at least one of at least one cell identity, an SRS positioning configuration for a NUL carrier, an SRS positioning configuration for a SUL carrier, a BWP configuration on the NUL carrier, a BWP configuration on the SUL carrier, and a TA configuration of the active area.

[0018] In one of the embodiments, the TA configuration of the active area includes an inactive state SRS positioning active area TA timer, an inactive state SRS positioning active area RSRP change threshold, and indication information indicating whether to automatically perform TA adjustment.

[0019] In one of the embodiments, after receiving the first response message from the distribution unit (DU), the method further includes:

[0020] sending an interface message to the distribution unit (DU), the interface message including an RRC message; the RRC message including at least one of second SRS information and inactive state SRS configuration information; the interface message being used to instruct the distribution unit (DU) to send the RRC message to the terminal, and the RRC message being used to instruct the terminal to complete the transmission configuration of the SRS signal.

[0021] In one of the embodiments, the RRC message is an RRC reconfiguration message or an RRC release message.

[0022] In a second aspect, the present application further provides a positioning configuration method, applied to a distributed unit (DU), the method comprising:

[0023] receiving a first request message from a central unit (CU), the first request message comprising at least one of first SRS information and non-active state SRS positioning inquiry indication information; the first SRS information comprising at least one of a first SRS configuration and a bandwidth aggregation request indication; the bandwidth aggregation request indication being used to acquire one or more carrier aggregation configurations; sending a first response message to the central unit (CU); the first response message comprising at least one of second SRS information and non-active state SRS configuration information; the second SRS information comprising at least one of a second SRS configuration and a carrier aggregation configuration.

[0024] In one of the embodiments, the carrier aggregation configuration comprises one or more serving cell identifiers and BWP identifiers.

[0025] In one of the embodiments, the first SRS configuration comprises at least one of an SRS transmission bandwidth, synchronization signal block (SSB) cell number information, and system frame number (SFN) offset configuration; the SSB cell number information is used to indicate an SSB number of a non-cell defined synchronization signal block (NCD-SSB) in a neighbor cell or a serving cell; the SRS transmission bandwidth comprises an SRS transmission bandwidth corresponding to a first frequency range (FR1) or an SRS transmission bandwidth corresponding to a second frequency range (FR2); the SFN offset configuration comprises at least one of an offset of the SFN and an integer subframe offset. In one of the embodiments, the SRS transmission bandwidth corresponding to the first frequency range (FR1) comprises at least one of 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 35MHz, 40MHz, 45MHz, 50MHz, 60MHz, 70MHz, 80MHz, 90MHz, and 100MHz; the SRS transmission bandwidth corresponding to the second frequency range (FR2) comprises at least one of 50MHz, 100MHz, 200MHz, 400MHz, 800MHz, and 1600MHz.

[0026] In one of the embodiments, the first request message is a positioning information request message; and the first response message is a positioning information response message or a positioning information update message.

[0027] In one of the embodiments, the second SRS configuration comprises at least one of at least one port configuration, at least one repetition factor, at least one SRS resource type configuration, at least one frequency hopping configuration, and at least one extended port configuration.

[0028] In one of the embodiments, the port configuration comprises one of 1-port, 2-port, 4-port configuration; the extended port configuration comprises 8-port configuration, the 8-port configuration is to map 8 ports to two different subsets respectively based on non-time division multiplexing (TDM), and the different subsets are mapped to different symbols.

[0029] In one of the embodiments, the frequency hopping configuration comprises at least one of overlap value, frequency hopping number, frequency hopping comb offset, SRS transmission duration, SRS transmission period, SRS offset, starting SFN where the SRS is located, frequency hopping repetition mode, frequency hopping cyclic shift, frequency hopping granularity.

[0030] In one of the embodiments, the SRS resource type configuration comprises one of the following: aperiodic configuration, semi-periodic configuration, periodic configuration.

[0031] In one of the embodiments, the periodic configuration comprises at least one of period value, slot offset, periodic configuration of super frame; the aperiodic configuration comprises slot offset; the semi-periodic configuration comprises at least one of period value, slot offset, periodic configuration of super frame; the periodic configuration of super frame is used to indicate whether the super frame is even or odd when the SRS is transmitted.

[0032] In one of the embodiments, the repetition factor comprises at least one of a plurality of parameter values; the plurality of parameter values are respectively 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14; the overlap value comprises 0 RB, 1 RB, 2 RB, and 4 RB; the frequency hopping number comprises a value range of 1-6; the frequency hopping comb offset comprises frequency hopping identification and / or frequency hopping sub-set; the frequency hopping identification ranges from 0 to 1023, and the frequency hopping sub-set comprises 2-comb transmission, 4-comb transmission, or 8-comb transmission.

[0033] In one of the embodiments, the inactive state SRS configuration information comprises at least one of inactive state SRS first configuration, inactive state SRS second configuration; the inactive state SRS first configuration comprises configuration of SRS on normal uplink (NUL) carrier, configuration of SRS on supplementary uplink (SUL) carrier, bandwidth part (BWP) configuration of NUL carrier, BWP configuration of SUL carrier, TA timer in inactive state, and change threshold of reference signal received power (RSRP) in inactive state; the inactive state SRS second configuration comprises at least one of the following: at least one inactive state SRS positioning aggregated bandwidth configuration, SRS positioning transmission frequency hopping configuration, at least one inactive state valid area pre-configuration, at least one inactive state valid area non-pre-configuration.

[0034] In one of the embodiments, the inactive state SRS positioning aggregated bandwidth configuration includes at least one of a subcarrier spacing, an SRS carrier frequency; wherein the SRS carrier frequency represents a carrier frequency of a SRS resource set for bandwidth aggregation; the inactive state active area pre-configuration includes at least one of at least one cell identification, an SRS positioning configuration for a NUL carrier, an SRS positioning configuration for a SUL carrier, a BWP configuration on the NUL carrier, a BWP configuration on the SUL carrier, a TA configuration of the active area.

[0035] In one of the embodiments, the TA configuration of the active area includes an inactive state SRS positioning active area TA timer, an inactive state SRS positioning active area RSRP change threshold, and indication information representing whether to automatically perform TA adjustment.

[0036] In one of the embodiments, after sending the first response message to the centralized unit CU, the method further includes: receiving an interface message from the centralized unit CU, the interface message including an RRC message; the RRC message including at least one of second SRS information, inactive state SRS configuration information; and sending the RRC message to the terminal, the RRC message being used to instruct the terminal to complete the transmission configuration of the SRS signal.

[0037] In one of the embodiments, the RRC message is an RRC reconfiguration message or an RRC release message.

[0038] In a third aspect, the present application also provides an uplink positioning method applied to a terminal, the method including: receiving an RRC message from a network entity, the RRC message including at least one of second SRS information, inactive state SRS configuration information; and the second SRS information including at least one of a second SRS configuration, a carrier aggregation configuration.

[0039] In one of the embodiments, the network entity is a distributed unit DU, a centralized unit CU, or a base station.

[0040] In one of the embodiments, the RRC message is an RRC reconfiguration message or an RRC release message.

[0041] In one of the embodiments, the second SRS configuration includes at least one of at least one port configuration, at least one repetition factor, at least one SRS resource type configuration, at least one frequency hopping configuration, at least one extended port configuration.

[0042] In one of the embodiments, the port configuration includes one of 1-port, 2-port, 4-port configuration; and the extended port configuration includes 8-port configuration, the 8-port configuration being based on non-time division multiplexing (TDM) to map 8 ports to two different subsets respectively, and the different subsets being mapped to different symbols.

[0043] In one of the embodiments, the frequency hopping configuration includes at least one of an overlap value, a number of frequency hops, a frequency hopping comb offset, a SRS transmission duration, a SRS transmission periodicity, a SRS offset, a starting SFN where the SRS is located, a frequency hopping repetition manner, a frequency hopping cycle shift, a frequency hopping granularity.

[0044] In one of the embodiments, the SRS resource type configuration includes at least one of aperiodic configuration, semi-persistent configuration, periodic configuration.

[0045] In one of the embodiments, the periodic configuration includes at least one of a periodicity value, a slot offset, a periodicity configuration of a hyper frame; the aperiodic configuration includes a slot offset; the semi-persistent configuration includes at least one of a periodicity value, a slot offset, a periodicity configuration of a hyper frame; the periodicity configuration of a hyper frame is used to indicate whether a positioning SRS transmission is an even hyper frame or an odd hyper frame.

[0046] In one of the embodiments, the repetition factor includes at least one of a plurality of parameter values; the plurality of parameter values are respectively 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14; the overlap value includes 0 RB, 1 RB, 2 RBs, and 4 RBs; a value range of the number of frequency hops includes 1-6; the frequency hopping comb offset includes a frequency hopping identification and / or a frequency hopping sub-set; the frequency hopping identification ranges from 0 to 1023, and the frequency hopping sub-set includes 2-comb transmission, 4-comb transmission, or 8-comb transmission.

[0047] In one of the embodiments, the inactive state SRS configuration information includes at least one of an inactive state SRS first configuration, an inactive state SRS second configuration; the inactive state SRS first configuration includes a configuration of a SRS on a normal uplink NUL carrier, a configuration of the SRS on a supplementary uplink SUL carrier, a bandwidth part BWP configuration of the NUL carrier, a BWP configuration of the SUL carrier, a TA timer in an inactive state, and a change threshold of a reference signal receiving power RSRP in the inactive state; the inactive state SRS second configuration includes at least one of at least one inactive state SRS positioning aggregated bandwidth configuration, a SRS positioning transmission frequency hopping configuration, at least one inactive state valid area pre-configuration, and at least one inactive state valid area non-pre-configuration.

[0048] In one of the embodiments, the inactive state SRS positioning aggregated bandwidth configuration includes at least one of a subcarrier spacing, and a SRS carrier frequency; the SRS carrier frequency represents a carrier frequency of a SRS resource set for bandwidth aggregation; the inactive state valid area pre-configuration includes at least one of at least one cell identification, a SRS positioning configuration for a NUL carrier, a SRS positioning configuration for a SUL carrier, a BWP configuration on the NUL carrier, a BWP configuration on the SUL carrier, and a TA configuration of a valid area.

[0049] In one of the embodiments, the TA configuration of the active area includes an SRS positioning active area TA timer in the inactive state, an SRS positioning active area RSRP change threshold in the inactive state, and indication information indicating whether to automatically perform TA adjustment.

[0050] In one of the embodiments, the method further includes completing the transmission configuration of the SRS signal according to the RRC message.

[0051] In a fourth aspect, the present application further provides a positioning configuration device, applied to a centralized unit CU, and the device includes: a request message sending module, configured to send a first request message to a distributed unit DU, the first request message including at least one of first SRS information and inactive state SRS positioning inquiry indication information; the first SRS information including at least one of first SRS configuration and bandwidth aggregation request indication; the bandwidth aggregation request indication being used to obtain one or more carrier aggregation configurations; a response message receiving module, configured to receive a first response message from the distributed unit DU; the first response message including at least one of second SRS information and inactive state SRS configuration information; the second SRS information including at least one of second SRS configuration and carrier aggregation configuration.

[0052] In a fifth aspect, the present application further provides a positioning configuration device, applied to a distributed unit DU, and the device includes: a request message receiving module, configured to receive a first request message from a centralized unit CU, the first request message including at least one of first SRS information and inactive state SRS positioning inquiry indication information; the first SRS information including at least one of first SRS configuration and bandwidth aggregation request indication; the bandwidth aggregation request indication being used to obtain one or more carrier aggregation configurations; a response message sending module, configured to send a first response message to the centralized unit CU; the first response message including at least one of second SRS information and inactive state SRS configuration information; the second SRS information including at least one of second SRS configuration and carrier aggregation configuration.

[0053] In a sixth aspect, the present application further provides an uplink positioning device, applied to a terminal, and the device includes: a configuration message receiving module, configured to receive an RRC message from a network entity, the RRC message including at least one of second SRS information and inactive state SRS configuration information; the second SRS information including at least one of second SRS configuration and carrier aggregation configuration.

[0054] In a seventh aspect, the present application further provides a centralized unit CU, including a memory and a processor, the memory storing a computer program, and the processor implementing the steps of the method in the first aspect when executing the computer program.

[0055] In an eighth aspect, the present application provides a distribution unit (DU), comprising a memory and a processor, the memory storing a computer program, and the processor implementing the steps of the method in the second aspect when executing the computer program.

[0056] In a ninth aspect, the present application provides a terminal, comprising a memory and a processor, the memory storing a computer program, and the processor implementing the steps of the method in the third aspect when executing the computer program.

[0057] In a tenth aspect, the present application provides a communication system, comprising the centralized unit (CU), the distribution unit (DU) and the terminal as described above.

[0058] In an eleventh aspect, the present application provides a computer readable storage medium, storing a computer program, and the computer program implementing the steps of the method in the aspects above when executed by a processor.

[0059] In a twelfth aspect, the present application provides a computer program product, comprising a computer program, and the computer program implementing the steps of the method in the aspects above when executed by a processor.

[0060] The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the application will be apparent from the description and drawings, and from the claims. BRIEF DESCRIPTION OF DRAWINGS

[0061] FIG. 1 is a schematic diagram of a wireless communication system to which embodiments of the present application can be applied;

[0062] FIG. 2 is a schematic diagram of a CU and DU separation architecture in an embodiment;

[0063] FIG. 3 is a schematic diagram of a positioning configuration method in an embodiment;

[0064] FIG. 4 is a schematic diagram of a method of transmitting configuration to a terminal in an embodiment;

[0065] FIG. 5 is a schematic diagram of a positioning configuration method in another embodiment;

[0066] FIG. 6 is a schematic diagram of a method of transmitting SRS signal configuration to a terminal in an embodiment;

[0067] FIG. 7 is a signaling interaction flow diagram of an uplink positioning method in an embodiment;

[0068] FIG. 8 is a structural block diagram of a positioning configuration apparatus in an embodiment;

[0069] FIG. 9 is a structural block diagram of a positioning configuration apparatus in another embodiment;

[0070] FIG. 10 is an internal structure diagram of an access network device in an embodiment;

[0071] FIG. 11 is an internal structure diagram of a terminal in an embodiment. DETAILED DESCRIPTION

[0072] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0073] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not intended to describe a specific order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second" are generally a class, not limited to the number of objects, for example, the first object can be one or more. In addition, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " generally represents an "or" relationship between the associated objects. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0074] The term "indication" in the present application can be an explicit indication or an implicit indication. Among them, the explicit indication can be understood as the sender explicitly informing the receiver of the operation or request result to be performed in the indication sent by the sender; the implicit indication can be understood as the receiver judging according to the indication sent by the sender, and determining the operation or request result to be performed according to the judgment result.

[0075] It is worth noting that the terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned system and other systems. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems, or can be applied to next-generation mobile communication systems or other similar communication systems, without limitation.

[0076] FIG. 1 is a schematic diagram of a wireless communication system to which embodiments of the present application can be applied. The wireless communication system includes a terminal 102 and a network device 104. The terminal 102 can also be referred to as a terminal device or a user equipment (UE). The terminal 102 can be a wireless terminal, which can refer to a device providing voice and / or other

[0077] Exemplarily, the wireless terminal can communicate with one or more core networks via a (Radio) Access Network (RAN). The wireless terminal can be a mobile terminal, such as a mobile telephone (also known as a "cellular" telephone) and a computer with a mobile termination, e.g., a portable, pocket, handheld, computer-embedded or car-mounted mobile device which exchanges language and / or data with the radio access network. The wireless terminal can also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, a remote terminal, an access terminal, a user terminal, a user agent, a user device or a user equipment, without limitation.

[0078] The network device 104 can be an access network device, which can also be referred to as a radio access network node, hereinafter referred to as a radio access network RAN node or RAN node. Exemplarily, the access network device can be a base station with wireless communication function, e.g., a micro base station, a macro base station, etc. The base station can be an evolutional NodeB (eNB or e-NodeB) in Long Term Evolution (LTE), a base station in a 5G mobile communication network (next generation nodeB, gNB), etc., without limitation. It should be noted that embodiments of the present application can be applied to a 5G SA (Standalone, independent networking) scenario.

[0079] Taking a 5G (5th Generation Mobile Communication Technology) system as an example, at present, as a new generation of wireless network technology, the 5G has characteristics of supporting large bandwidth, large connection, low latency, wireless cloud, etc. Among them, in terms of supporting wireless cloud, starting from Rel-15, the architecture design of separating CU (Centralized Unit) and DU (Distributed Unit) and separating CP (Control Plane) and UP (User Plane) is supported, as shown in FIG. 2. Among them, the CU and DU functions are divided according to the real-time nature of the processing content; the CU device includes non-real-time wireless high-layer protocol stack functions, and also supports the sinking of part of the core network functions and the deployment of edge application services, while the DU device mainly processes physical layer functions and layer 2 functions with real-time requirements. On the basis of CU / DU separation, in order to further adapt to the requests of different services, the CU side of the access network can further separate the control plane (CP) and the user plane (UP), and the separated CP and UP are decoupled from each other, interact through a standard E1 interface, and can be deployed on different physical nodes.

[0080] It can be understood that in FIG. 2, 5GC (5G Core) represents a 5G core network, NG-RAN (New Generation-Radio Access Network) represents a new generation of wireless access network, gNB-DU can represent a base station separation entity, and gNB-CU can represent a base station centralized entity. NG represents an NG interface (an interface between a wireless access network and a 5G core network), F1 represents an F1 interface (an interface for interconnection between CU and DU function entities of a gNB inside an NG-RAN), and Xn-C represents an Xn-C interface (used for connecting two NG-RAN nodes).

[0081] SUL (Supplementary Uplink) is a new technology added by 3GPP (3rd Generation Partnership Project) in 5G Release 15. A cell, whether FDD (Frequency-division Duplex) or TDD (Time-division Duplex), will contain an uplink carrier and a downlink carrier respectively, and belong to the same frequency band. As mentioned earlier, in the 5G era, the range of a cell is often limited by the uplink coverage of the UE, so the industry has proposed SUL technology to ensure the actual uplink coverage range in the network by configuring a low-frequency SUL carrier in an NR cell. For example, in a cell with N41-N83, there is not only an NUL (Normal Uplink) carrier of N41, but also an SUL carrier of N83.

[0082] SRS is a signal used in wireless communication systems (such as LTE (Long Term Evolution) and 5G NR) for uplink channel estimation. The base station can understand the state of the channel according to the SRS, thereby optimizing resource allocation and signal processing, and can also provide accurate Channel State Information (CSI) to enable the base station to make link adaptation, beamforming, and scheduling decisions.

[0083] With the continuous advancement of 5G network construction, the demand of users for 5G functions is increasingly diverse, among which, the accurate description of the location has become the basic requirement of various industries. The application scenarios such as emergency rescue, Internet of Vehicles, intelligent manufacturing and smart logistics have put forward higher requirements for positioning capability. In the long-term evolution process of the communication positioning system, the positioning accuracy of the communication system of R9 to R11 protocol is not high, generally in 50-150m, mainly based on the time measurement of Observed Time Difference of Arrival (OTDOA), UL-TDOA (Uplink Time Difference Of Arrival) and Cell-ID (CID). From R12 to R14 protocol, the positioning accuracy reaches 10-100m, and a variety of positioning technology fusion schemes are given. Until R15 and R16 protocol, 5G uses the multi-beam characteristics of Multiple Input Multiple Output (MIMO) to enhance positioning, and also defines the positioning technologies based on cellular RTT (Round Trip Time), DL-TDOA (Downlink Time Difference of Arrival), Angle of Arrival (AOA), Angle of Departure (AOD), etc., so that the positioning accuracy reaches 3-10m, and on this basis, it is continuously evolving, and R17 protocol will further improve the indoor positioning accuracy to centimeter level to meet the demand of specific vertical industry application scenarios.

[0084] In R18, enhancements for positioning signals are made, with requirements for high accuracy and very low power consumption, with battery life of one year or more, identified for IIoT (Industrial Internet of Things) use cases, such as large scale asset tracking, AGV (Automated Guided Vehicle) tracking in industrial factories, and personnel positioning in hazardous areas. One typical scenario is use case #6 defined in TS 22.104, which corresponds to tracking workpieces (indoor and outdoor) in assembly areas and warehouses, with target accuracy <1m, positioning interval 15-30s, and battery life 6-12 months. To support LPHAP (Low Power High Accuracy Positioning), version 18 introduces a variety of enhancements, including: (i) enhanced SRS for positioning configuration in inactive state, for UL and UL+DL positioning, based on SRS for positioning validity area to avoid frequent reconfiguration of SRS for positioning when the serving cell changes; (ii) introduction of (e) DRX (Discontinuous Reception) cycle longer than 10.24 seconds in inactive state; (iii) alignment of (e) DRX cycle in inactive state and DL PRS (Downlink Positioning Reference Signal) configuration, and (iv) support for measurement of DL PRS resources in idle state and reporting of corresponding measurements in connected state.

[0085] SRS for positioning validity area consists of units configured in the same carrier, with common values of BWP (Bandwidth Part) parameters, i.e. location and bandwidth, subcarrier spacing and cyclic prefix, where the positioning configuration SRS in inactive state is valid. In addition, various parameters for SRS for positioning configuration (through SRS-PosConfig) and SRS for positioning resource configuration (through SRSPosResource) are typically configured in these cells. In addition, methods for determining UL timing and TA (Timing Advance) values, spatial relations for SRS for positioning, and path loss RS (Reference Signal) for transmission power control within SRS within the positioning validity area have been specified.

[0086] When SRS for positioning configuration and SRS for positioning validity area are configured, if the UE reselects another cell within the SRS positioning validity area during SRS transmission, the UE continues SRS transmission but accepts the validation of SRS transmission. When the UE reselects a positioning validity area from SRS during SRS transmission, the UE can send an "RRC (Radio Resource Control) resume request" message to the network for SRS configuration request.

[0087] SRS for positioning configuration in the inactive state can be pre-configured in the target device. When a periodic or triggered location event is detected, the target device can send an "RRC resume request" message to the network to request to activate the pre-configured SRS for positioning. For multiple SRS configurations pre-configured, the UE only configures one SRS for positioning configuration for each validity area.

[0088] RedCap (Reduced Capability) NR UE is introduced in Release 17, which reduces the maximum UE bandwidth by 20MHz and 100MHz in FR1 (Frequency Range 1) and FR2 (Frequency Range 2) respectively, and reduces the number of Rx antennas. As a result of reducing the maximum UE bandwidth, it is observed that the achievable positioning accuracy is reduced compared to regular NR UEs, prompting the consideration of enhancements in Release 18, including using Rx (receiver) frequency hopping to receive DL PRS and using Tx (transmitter) frequency hopping to transmit SRS for positioning to enable measurements across a wider bandwidth than the maximum UE bandwidth of RedCap or Release 18 eRedCap UEs.

[0089] Frequency hopping based reception and transmission are defined within DL PRS resources and SRS for positioning resources, with switching time between frequency hops shorter than the typical BWP switching time specified in Release 15. For DL Rx frequency hopping, a single instance of the configured measurement gap is used to receive all hop numbers of DL PRS with Rx frequency hopping. For UL Tx frequency hopping, the frequency hopping pattern can be configured as overlapping or non-overlapping hops and follows a wrapped staircase pattern. In addition, SRS for positioning resources are configured outside the UE's active UL BWP configuration. In the time domain, the frequency hopping pattern of SRS for Tx frequency hopping positioning can be contained within a single slot or span multiple slots, and can be configured as periodic, semi-persistent, and aperiodic SRS for positioning.

[0090] However, in order to support the acquisition process of SRS signals in a split architecture, the conventional technology has the following problems, resulting in a decline in measurement accuracy in some scenarios:

[0091] ① Not support SRS configuration indication for NCD-SSB (Non-cell Defining SSB (Synchronization Signal Block)) or neighbor cell: In order to handle the SRS spatial relation configuration problem of mobile UE, a method of configuring SRS spatial relation is proposed. For a specific neighbor cell, the serving gNB only configures SRS resources and associates the cell ID of the neighbor cell without configuring any SSB index. The UE determines the spatial direction of the SRS resource based on the measurement results of the UE on the SSB of the neighbor cell. For example, the UE can determine the spatial relationship between SRS and SSB based on the previous RRM (Radio Resource Management) results. Similarly, for TRP (Transmission and Reception Point), the serving gNB can only configure SRS resources with PRS resource set ID but without PRS resource ID. The UE determines the spatial direction of the SRS resource based on the UE positioning measurement results of the DL positioning of PRS. In this way, the SRS spatial relation configuration does not need to be updated frequently, and the UE can ensure accurate SRS direction by maintaining beam training even if the UE moves at high speed. However, the current CU / DU specification can only indicate the SRS configuration of the current cell, and the SRS configuration measurement of the NCD-SSB of the current cell or the neighbor cell cannot be indicated.

[0092] ② DU cannot provide the related configuration of frequency hopping to CU: For example, the TA timer configuration in the inactive state and the configuration of the transmission time window of the uplink SRS are not provided to the CU, so the CU cannot provide the corresponding configuration information to the DU in the RRC release message, and the DU cannot obtain the corresponding configuration information.

[0093] ③ Not support configuration information configuration of connected state and inactive state carrier aggregation: The related configuration of SRS carrier aggregation includes the association relationship between uplink and downlink, and the current CU to DU specification cannot support the above content, so the terminal cannot configure the carrier aggregation state in the inactive state.

[0094] ④ Not support configuration information transmission of aperiodic SRS: Aperiodic SRS includes time slot offset, NZP (non-zero power) -CSI-RS-Resource ID, etc., but the current CU to DU specification only has the start of aperiodic SRS transmission, so the CU side cannot generate related SRS configuration information.

[0095] Based on the above-mentioned conventional technology, in order to support the uplink positioning design requirements of SRS, the embodiments of the present application enhance the functions through a new standardized way to meet the needs of network deployment and optimization. Among them, the embodiments of the present application support in the split architecture, the CU can obtain the related configuration information from the DU side and instruct the DU side to still maintain the related resource configuration when the terminal returns to the inactive state, thereby avoiding the compatibility problem between the terminal and the network caused by the DU side because it cannot identify that the UE has returned to the inactive state. The error release of the related resources, thereby being able to support more accurate and higher precision positioning capabilities. In addition, the embodiments of the present application do not involve the impact on the terminal, and since the network side scheme has good forward compatibility, it is easy to deploy and implement the network.

[0096] It should be noted that the beneficial effects or technical problems solved by the embodiments of the present application are not limited to this, but also other implicit or related problems, which can be seen from the description of the following embodiments.

[0097] The technical solutions of the present application and how the technical solutions of the present application solve the above-mentioned technical problems will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in detail in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0098] In an exemplary embodiment, as shown in FIG. 3, a positioning configuration method is provided, which is applied to a centralized unit CU for example, including the following steps 202 to 204. Among them:

[0099] Step 202, sending a first request message to the distributed unit DU, the first request message including at least one of the first SRS information, the SRS positioning inquiry indication information in the inactive state; the first SRS information includes at least one of the first SRS configuration, the bandwidth aggregation request indication; the bandwidth aggregation request indication is used to obtain one or more carrier aggregation configurations.

[0100] Among them, the first request message can be an interface message, for example, a first in-station interface request message, it can be understood that the centralized unit CU can send a request message to the distributed unit DU through a corresponding in-station interface (for example, a standardized interface or a private interface). Exemplarily, the first request message can be a positioning information request message (POSITIONING INFORMATION REQUEST).

[0101] Exemplarily, the centralized unit CU can be a base station centralized entity. Optionally, the base station centralized entity can include a 5G base station centralized entity or a 6G base station centralized entity, wherein the 6G base station centralized entity supports control plane and / or partial user plane functions; exemplarily, the distributed unit DU can be a base station separated entity. Optionally, the base station separated entity can include a 5G base station separated entity or a 6G base station separated entity, wherein the 6G base station separated entity supports at least partial protocol layer entities such as physical layer, MAC (Media Access Control) layer entities, etc.; in some examples, the base station centralized entity and the base station separated entity are connected through a standardized interface or a private interface.

[0102] Specifically, in the embodiment of the present application, the first request message can include at least one of first SRS information and non-active SRS positioning inquiry indication information; wherein the first SRS information can be used to indicate the transmission characteristic information of the sounding reference signal SRS, and optionally, the first SRS information can also be used to indicate the SRS configuration information of the terminal in the connected state;

[0103] The first SRS information includes first SRS configuration, and the first SRS information can also include bandwidth aggregation request indication; optionally, the bandwidth aggregation request indication is used to obtain one or more carrier aggregation configurations, and exemplarily, the carrier aggregation configuration can be an SRS carrier aggregation configuration. Optionally, the bandwidth aggregation request indication is an enumeration or a numerical value, and when it is "yes", it means that one or more SRS carrier aggregation configurations need to be obtained.

[0104] The non-active SRS positioning inquiry indication information is used to indicate the non-active SRS configuration information, and the non-active SRS configuration information can represent the SRS configuration information of the terminal in the non-active state, so that the centralized unit CU can obtain the related configuration information from the distributed unit DU side in the separated architecture.

[0105] Further, the centralized unit CU sends a first request message to the distributed unit DU, which can be used to instruct the distributed unit DU to configure the terminal to send SRS signals for uplink positioning measurement and / or the distributed unit DU to obtain SRS configuration information. Taking the centralized unit CU as a base station centralized entity and the distributed unit DU as a base station separated entity, and taking the first request message as a first intra-station interface request message, the base station centralized entity sends the first intra-station interface request message to the base station separated entity, which is used to instruct the base station separated entity to configure the terminal to send SRS signals for uplink positioning measurement and / or the base station separated entity to obtain SRS configuration information.

[0106] It should be noted that, regarding the configuration information related to uplink positioning, in the embodiments of the present application, the centralized unit CU can obtain the configuration information sent by the terminal when using SRS positioning, and / or determine the configuration information that needs to be obtained from the distributed unit DU. The embodiments of the present application do not limit the acquisition method of the configuration information. Taking the centralized unit CU as the base station centralized entity and the distributed unit DU as the base station separated entity as an example, the base station centralized entity can determine the first configuration information (at least one of the first SRS information and the non-active state SRS positioning inquiry indication information) sent by the terminal when using SRS positioning, and / or determine the second configuration information (for example, at least one of the second SRS information and the non-active state SRS configuration information) that needs to be obtained from the base station separated entity.

[0107] In step 204, a first response message from the distributed unit DU is received, and the first response message includes at least one of the second SRS information and the non-active state SRS configuration information; the second SRS information includes at least one of the second SRS configuration and the carrier aggregation configuration.

[0108] Among them, the first response message can be an interface message, for example, a first intra-station interface response message. It can be understood that the distributed unit DU can send the request message to the centralized unit CU through the corresponding intra-station interface (for example, a standardized interface or a private interface). Exemplarily, the first response message can be a positioning information response message (POSITIONING INFORMATION RESPONSE).

[0109] Specifically, after receiving the first request message, the distributed unit DU can determine the message content in the first response message according to the first SRS information and / or the non-active state SRS positioning inquiry indication information included in the first request message.

[0110] Exemplarily, the first response message includes the second SRS information and / or the non-active state SRS configuration information; when the first request message carries the first SRS information, the message content in the first response message includes the second SRS information (for example, the transmission characteristic information of the SRS). When the first request message carries the non-active state SRS positioning inquiry indication information, the message content in the first response message includes the non-active state SRS configuration information.

[0111] Taking the centralized unit CU as a centralized base station entity, the distributed unit DU as a distributed base station entity, the first request message as a first intra-station interface request message, and the first response message as a first intra-station interface response message as an example, the distributed base station entity can determine the message content in the first intra-station interface response message according to the first SRS information and / or the SRS positioning inquiry indication information in the non-active state carried in the first intra-station interface request message. When the first intra-station interface request message carries the first SRS information, the message content in the first intra-station interface response message includes the second SRS information (for example, the second SRS configuration). When the first intra-station interface request message carries the SRS positioning inquiry indication information in the non-active state, the first intra-station interface response message needs to carry the non-active SRS configuration information (for example, the non-active SRS first configuration or the non-active SRS second configuration).

[0112] In the embodiments of the application, the first response message is related to uplink positioning of the terminal, and the centralized unit CU can determine the related SRS configuration information for uplink positioning of the terminal according to the first response message, thereby meeting the uplink positioning demand of the sounding reference signal SRS and avoiding affecting the positioning measurement accuracy.

[0113] Regarding the carrier aggregation configuration, in some examples, the carrier aggregation configuration can include one or more serving cell identities and BWP identities.

[0114] Specifically, the carrier aggregation configuration can be used to instruct the terminal to perform uplink positioning based on an aggregated bandwidth in a connected state to support more accurate positioning capability. The carrier aggregation configuration can include one or more serving cell identities and bandwidth part (BWP) identities.

[0115] Taking the centralized unit CU as a centralized base station entity, the distributed unit DU as a distributed base station entity, the first request message as a first intra-station interface request message, and the first response message as a first intra-station interface response message as an example, when the first SRS information carried in the first intra-station interface request message includes a bandwidth aggregation request indication, the carrier aggregation configuration needs to be carried in the first intra-station interface response message, wherein the carrier aggregation configuration includes one or more serving cell and BWP identities, and the serving cell and BWP identities provide the SRS with serving cell and BWP configurations, so that the terminal performs positioning transmission using an aggregated bandwidth in a connected state.

[0116] Through the above carrier aggregation configuration, the embodiments of the application can support multi-carrier capability, thereby supporting higher-precision positioning capability through a larger bandwidth.

[0117] In actual applications, the embodiments of the present application can support configuring SRS signals in a neighbor cell and a NCD-SSB scenario of an Internet of Things terminal, and in one embodiment, the first SRS configuration includes at least one of an SRS transmission bandwidth, synchronization signal block SSB cell number information, and SFN (System Frame Number) offset configuration; wherein the SSB cell number information is used to indicate the SSB number of a non-cell-defined synchronization signal block NCD-SSB in one of the neighbor cells or the serving cell, for example, a cell physical layer identifier PCI (Physical Cell Identifier).

[0118] Specifically, the first SRS information can include one or more first SRS configurations, and the first SRS configuration is associated with one cell. For example, the first SRS configuration can include at least one of an SRS transmission bandwidth, synchronization signal block SSB cell number information, and SFN offset configuration.

[0119] The SSB cell number information is used to indicate the SSB number of a non-cell-defined synchronization signal block NCD-SSB in one of the neighbor cells or the serving cell, for example, SSB cell number information #2. By supporting configuring SRS signals in a neighbor cell and a NCD-SSB scenario of an Internet of Things terminal, the embodiments of the present application can solve the problem that the SRS signals of the traditional scheme can only be associated with the SRS of the current cell, thereby supporting more accurate positioning capabilities.

[0120] In some embodiments, the SRS transmission bandwidth can include an SRS transmission bandwidth corresponding to a first frequency range FR1 and an SRS transmission bandwidth corresponding to a second frequency range FR2; and the SFN offset configuration includes at least one of an offset of the SFN and an integer subframe offset.

[0121] Specifically, the SRS transmission bandwidth can include an SRS transmission bandwidth corresponding to a first frequency range FR1 (referred to as FR1 SRS transmission bandwidth) and an SRS transmission bandwidth corresponding to a second frequency range FR2 (referred to as FR2 SRS transmission bandwidth).

[0122] For example, the FR1 SRS transmission bandwidth includes at least one of 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 35MHz, 40MHz, 45MHz, 50MHz, 60MHz, 70MHz, 80MHz, 90MHz, and 100MHz, and the FR2 SRS transmission bandwidth includes at least one of 50MHz, 100MHz, 200MHz, 400MHz, 800MHz, and 1600MHz.

[0123] Exemplarily, the SRS transmission bandwidth corresponding to the second frequency range FR2 is 1600MHz. Optionally, the SRS transmission bandwidth corresponding to the first frequency range FR1 includes 3MHz.

[0124] Further, the SFN offset configuration can include at least one of an offset of the SFN, an integer subframe offset.

[0125] In one embodiment, the first request message is a positioning information request message; and the first response message is a positioning information response message or a positioning information update message.

[0126] Specifically, regarding the positioning information request message, the positioning information request message can be a POSITIONING INFORMATION REQUEST in the 5G system or a positioning information request message in the 6G system, which is used to indicate to the distributed unit DU that the UE needs to be configured to send the SRS signal for uplink positioning measurement, and also needs to retrieve the SRS configuration from the gNB DU.

[0127] Further, the first response message is a positioning information response message or a positioning information update message, wherein the positioning information response message can be a POSITIONING INFORMATION RESPONSE message in the 5G system, and the positioning information update message can be a POSITIONING INFORMATION UPDATE message in the 5G system, or the positioning information response message is a positioning information response message in the 6G system, which is used to respond to the request message or to provide the SRS information to the centralized unit CU.

[0128] In some embodiments, the second SRS configuration includes at least one of at least one port configuration, at least one repetition factor, at least one SRS resource type configuration, at least one frequency hopping configuration, and at least one extended port configuration.

[0129] Specifically, the second SRS configuration can include at least one of one or more port configurations, one or more repetition factors, one or more SRS resource type configurations, one or more frequency hopping configurations, and one or more extended port configurations.

[0130] In one embodiment, the port configuration can include one of 1 port, 2 port, and 4 port configurations; and the extended port configuration includes an 8 port configuration, wherein the 8 port configuration is mapped to two different subsets based on non-time division multiplexing (TDM), and the different subsets are mapped to different symbols.

[0131] Specifically, the port configuration can include one of 1 port, 2 ports, 4 ports, and the extended port includes at least one of 8 ports, 8 ports TDM, wherein the 8 ports represent that the terminal is configured with 8 ports, and the 8 ports TDM represents that the 8 ports are respectively mapped to two different subsets, and the different subsets are mapped to different symbols.

[0132] Further, through the second SRS configuration, at least one of one or more repetition factors, one or more SRS resource type configurations, one or more frequency hopping configurations, so that the embodiments of the present application can support frequency hopping capability, thereby supporting higher precision positioning capability through frequency hopping. It can be understood that in combination with the above carrier aggregation configuration, etc., the present application can support frequency hopping and multi-carrier capability, and support higher precision positioning capability through frequency hopping and larger bandwidth.

[0133] In one of the embodiments, the repetition factor includes at least one of a plurality of parameter values; the SRS resource type configuration includes one of the following: aperiodic configuration, semi-periodic configuration, periodic configuration. In one of the embodiments, the frequency hopping configuration includes at least one of the following: overlap value, frequency hopping number, frequency hopping comb offset, SRS transmission duration, SRS transmission period, SRS offset, starting SFN where the SRS is located, frequency hopping repetition mode, frequency hopping cycle displacement, frequency hopping granularity.

[0134] Specifically, the repetition factor can include a plurality of parameter values; in some examples, the plurality of parameter values are 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, respectively, i.e. the repetition factor can include at least one of 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14.

[0135] The SRS resource type configuration can be at least one of periodic configuration, aperiodic configuration, semi-periodic configuration, and exemplarily, the SRS resource type configuration is periodic configuration; wherein the periodic configuration can include at least one of period value, slot offset, hyper SFN periodic configuration; the aperiodic configuration can include slot offset; the semi-periodic configuration includes at least one of period value, slot offset, hyper SFN periodic configuration; optionally, the hyper SFN periodic configuration is whether the hyper SFN is even or odd when the positioning SRS is transmitted.

[0136] The frequency hopping configuration can include at least one of the following: overlap value, frequency hopping number, frequency hopping comb offset, SRS transmission duration, SRS transmission period, SRS offset, starting SFN where the SRS is located, frequency hopping repetition mode, frequency hopping cycle displacement, frequency hopping granularity, and exemplarily, the frequency hopping configuration includes overlap value, frequency hopping number, frequency hopping comb offset, SRS transmission duration, SRS transmission period, SRS offset, starting SFN where the SRS is located, frequency hopping repetition mode, frequency hopping cycle displacement, frequency hopping granularity.

[0137] wherein, the number of overlapping values can include 0 RB, 1 RB, 2 RBs and 4 RBs; the number of frequency hopping values can include 1-6; the frequency hopping comb offset can include a frequency hopping identifier and / or a frequency hopping sub-set, wherein the frequency hopping identifier can range from 0 to 1023, and the frequency hopping sub-set can include 2-comb transmission, 4-comb transmission or 8-comb transmission; the frequency hopping repetition mode indicates the frequency hopping behavior of one time domain configured for the repetition factor, including symbol level or repetition; the frequency hopping cyclic shift can include a frequency hopping identifier and / or a frequency hopping sub-set, wherein the frequency hopping sub-set includes 2-comb transmission, 4-comb transmission or 8-comb transmission.

[0138] Further, when the frequency hopping granularity is "yes", the K in the generated sequence of the SRS is 2, otherwise it is 1, wherein, represents the cyclic shift frequency hopping of the generated sequence, and K represents the frequency hopping range.

[0139] The SRS transmission duration indicates the duration of the uplink SRS for positioning frequency hopping transmission window, and the value can include 1 slot, 2 slots, 4 slots and 6 slots; the SRS transmission period and offset (SRS transmission period and SRS offset) indicate the periodicity and slot offset of the uplink SRS for positioning frequency hopping transmission window.

[0140] In actual application, based on the non-active SRS configuration information, the application can instruct the DU side to still maintain the related resource configuration when the terminal returns to the non-active state, so as to avoid the compatibility problem between the terminal and the network caused by the error release of the related resources due to the inability of the DU side to identify that the UE has returned to the non-active state. Regarding the non-active SRS configuration information, in one embodiment, the non-active SRS configuration information can include at least one of the non-active SRS first configuration and the non-active SRS second configuration.

[0141] Specifically, the SRS positioning inquiry indication information in the non-active state can be used to indicate the acquisition of the non-active SRS configuration information; the distribution unit DU receives the first request message, and the first request message carries the SRS positioning inquiry indication information in the non-active state, and then the first response message contains the non-active SRS first configuration or the non-active SRS second configuration. For example, the non-active SRS configuration information includes the non-active SRS first configuration and the non-active SRS second configuration. Wherein, the SRS positioning inquiry indication information in the non-active state indicates that the SRS configuration information of the terminal in the non-active state is needed.

[0142] ​In the case of a centralized unit (CU) as a centralized base station entity, a distributed unit (DU) as a distributed base station entity, a first request message as a first intra-station interface request message, and a first response message as a first intra-station interface response message, if the first intra-station interface request message carries the SRS positioning inquiry indication information in the inactive state, the first intra-station interface response message contains the first configuration of the SRS in the inactive state or the second configuration of the SRS in the inactive state. For example, when the SRS positioning inquiry indication information in the inactive state is "yes" or is carried, the distributed base station entity carries the first configuration of the SRS in the inactive state or the second configuration of the SRS in the inactive state in the first intra-station interface response message.

[0143] In one embodiment, the first configuration of the SRS in the inactive state includes the configuration of the SRS on a normal uplink (NUL) carrier, the configuration of the SRS on a supplementary uplink (SUL) carrier, the bandwidth part (BWP) configuration of the NUL carrier, the BWP configuration of the SUL carrier, the TA timer in the inactive state, and the change threshold of the reference signal receiving power (RSRP) in the inactive state.

[0144] The second configuration of the SRS in the inactive state includes at least one of the following: at least one inactive SRS positioning aggregated bandwidth configuration, an SRS positioning transmission frequency hopping configuration, at least one inactive valid area pre-configuration, and at least one inactive valid area non-pre-configuration.

[0145] Specifically, the first configuration of the SRS in the inactive state includes the configuration of the SRS on the NUL carrier, the configuration of the SRS on the SUL carrier, the BWP configuration on the NUL (BWP configuration of the NUL carrier), the BWP configuration on the SUL (BWP configuration of the SUL carrier), the TA timer in the inactive state, and the change threshold of the RSRP in the inactive state.

[0146] The second configuration of the SRS in the inactive state can include at least one of one or more inactive SRS positioning aggregated bandwidth configurations, an SRS positioning transmission frequency hopping configuration, one or more inactive valid area pre- configurations, and one or more inactive valid area non-pre-configurations. For example, the second configuration of the SRS in the inactive state includes two inactive SRS positioning aggregated bandwidth configurations, an SRS positioning transmission frequency hopping configuration, one inactive valid area pre-configuration, and one inactive valid area non-pre-configuration. Alternatively, the second configuration of the SRS in the inactive state includes one inactive SRS positioning aggregated bandwidth configuration, an SRS positioning transmission frequency hopping configuration, two inactive valid area pre-configurations, and two inactive valid area non-pre-configurations.

[0147] In one of the embodiments, the inactive state SRS positioning aggregated bandwidth configuration comprises at least one of subcarrier spacing, SRS carrier frequency; wherein the SRS carrier frequency indicates the carrier frequency of the SRS resource set linked for bandwidth aggregation.

[0148] The inactive state active area pre-configuration comprises one of the following: at least one cell identification, SRS positioning configuration for NUL carrier, SRS positioning configuration for SUL carrier, BWP configuration on NUL carrier, BWP configuration on SUL carrier, TA configuration of the active area.

[0149] Specifically, the inactive state SRS positioning aggregated bandwidth configuration comprises at least one of subcarrier spacing, SRS carrier frequency; wherein the SRS carrier frequency indicates the carrier frequency of the SRS resource set linked for bandwidth aggregation. Exemplarily, the inactive state SRS positioning aggregated bandwidth configuration comprises subcarrier spacing and SRS carrier frequency.

[0150] The inactive state active area pre-configuration can comprise at least one of the following: one or more cell identifications, SRS positioning configuration for NUL carrier, SRS positioning configuration for SUL carrier, BWP configuration of NUL (BWP configuration on NUL carrier), BWP configuration of SUL (BWP configuration on SUL carrier), TA configuration of the active area. Exemplarily, the inactive state active area pre-configuration comprises one cell identification, SRS positioning configuration for NUL carrier, SRS positioning configuration for SUL carrier, BWP configuration on NUL carrier, BWP configuration on SUL carrier, and TA configuration of the active area. Optionally, the inactive state active area pre-configuration comprises one cell identification, SRS positioning configuration for SUL carrier, BWP configuration on SUL carrier, and TA configuration of the active area.

[0151] In one of the embodiments, the TA configuration of the active area comprises SRS positioning inactive state active area TA timer, SRS positioning inactive state active area RSRP change threshold, and indication information indicating whether to automatically perform TA adjustment.

[0152] Specifically, the TA configuration of the active area can comprise SRS positioning inactive state active area TA timer, SRS positioning inactive state active area RSRP change threshold, and indication information indicating whether to automatically perform TA adjustment; wherein the indication information indicating whether to automatically perform TA adjustment can be indication information indicating whether to automatically perform TA adjustment.

[0153] The positioning configuration method can support that the CU can obtain relevant configuration information from the DU side in a split architecture, can support configuring the SRS signal in a neighbor cell and NCD-SSB scenario of an Internet of Things terminal, solves the problem that the SRS signal can only be associated with the SRS of the current cell in a traditional scheme, and thus supports more accurate positioning capability. In addition, the application also supports frequency hopping and multi-carrier capability, and supports higher-precision positioning capability through frequency hopping and a larger bandwidth.

[0154] In one exemplary embodiment, as shown in FIG. 4, after step 204, steps 302 to 304 can be included. Among them:

[0155] In step 302, an interface message is sent to the distributed unit DU, and the interface message includes an RRC message; the RRC message includes at least one of the second SRS information and the inactive SRS configuration information.

[0156] Specifically, the centralized unit CU can generate an RRC message for a terminal in a connected state. Optionally, the RRC message is an RRC reconfiguration message. For example, the RRC message can be a radio resource control (RRC) reconfiguration message. Exemplarily, the RRC reconfiguration message can include one or more SRS positioning aggregated bandwidth configurations, SRS configurations of a normal uplink (NUL), and SRS configurations of a supplementary uplink (SUL).

[0157] Exemplarily, the RRC message can include a carrier aggregation configuration, such as one or more SRS positioning aggregated bandwidth configurations, SRS configurations of a normal uplink (NUL), and SRS configurations of a supplementary uplink (SUL). It can be understood that the SRS positioning aggregated bandwidth configuration is used to indicate that the terminal uses an aggregated bandwidth for positioning transmission in a connected state. Optionally, the centralized unit CU can obtain the SRS positioning aggregated bandwidth configuration according to the carrier aggregation configuration.

[0158] Optionally, the SRS positioning aggregated bandwidth configuration includes a serving cell identifier and a BWP identifier. Specifically, in the embodiment of the application, the SRS positioning aggregated bandwidth configuration can include a serving cell identifier and a BWP identifier, wherein the identifiers of the serving cell and the BWP can provide the SRS with serving cell and BWP configurations to use an aggregated bandwidth for positioning transmission in a connected state.

[0159] In some embodiments, after receiving the first response message, the centralized unit CU can generate an RRC message for a terminal in a connected state to indicate the terminal to perform SRS signal transmission configuration, wherein the terminal can complete the SRS signal transmission mode configuration according to the RRC message.

[0160] The centralized unit CU is taken as a base station centralized entity, and the first response message is taken as a first intra-station interface response message. After receiving the first intra-station interface response message, the base station centralized entity generates an RRC message for a terminal in a connected state. The RRC message includes one or more SRS positioning aggregated bandwidth configurations, an SRS configuration of a NUL, and an SRS configuration of a SUL. The SRS configuration in the SRS configuration of the NUL can include at least one of frequency hopping configuration and carrier frequency. The SRS configuration in the SRS configuration of the SUL can include at least one of frequency hopping configuration and carrier frequency.

[0161] In addition, for a terminal that needs to switch back to an inactive state and needs to perform uplink positioning in the inactive state, the centralized unit CU can also generate an RRC message. After generating the RRC message, the centralized unit CU can send an interface message to the distributed unit DU. The interface message can include at least one of the RRC message and SRS positioning configuration saving information. It can be understood that the interface message can refer to an intra-station interface message. Further, the RRC message can include inactive state SRS configuration information. Alternatively, the RRC message is an RRC release message.

[0162] In the embodiments of the present application, the SRS positioning configuration saving information can instruct the distributed unit DU not to release the related resources used by the terminal for uplink positioning, so that the DU side still maintains the related resource configuration when the terminal returns to the inactive state, thereby avoiding the compatibility problem between the terminal and the network caused by the error release of the related resources by the DU side due to the inability to identify that the UE has returned to the inactive state.

[0163] The centralized unit CU is taken as a base station centralized entity, and the inactive state SRS configuration information includes at least one of inactive state SRS first configuration and inactive state SRS second configuration. When the base station centralized entity determines that the terminal needs to return to the inactive state and the terminal needs to perform SRS positioning transmission in the inactive state, an RRC release message can be generated. The RRC release message includes at least one of the inactive state SRS first configuration and the inactive state SRS second configuration.

[0164] In step 304, the interface message is used to instruct the distributed unit DU to send the RRC message to the terminal. The RRC message is used to instruct the terminal to complete the transmission configuration of the SRS signal.

[0165] Specifically, in the case of receiving the interface message, the distributed unit DU can send the RRC message to the terminal for a terminal in a connected state. After receiving the RRC message, the terminal can complete the transmission mode configuration of the SRS signal according to the configuration in the RRC message.

[0166] For a terminal that needs to switch back to the inactive state and needs to perform uplink positioning in the inactive state, the centralized unit CU can send an interface message to the distributed unit DU after generating the RRC message. Illustratively, the interface message can include at least one of the RRC message and SRS positioning configuration saving information. It can be understood that the interface message can refer to an intra-station interface message. Further, the distributed unit DU can send the RRC message to the terminal after receiving the interface message to instruct the terminal to enter the inactive state and complete the transmission configuration of the SRS signal.

[0167] Taking the centralized unit CU as the base station centralized entity, the distributed unit DU as the base station separated entity, and the RRC message as the RRC release message as an example, when the base station centralized entity determines that the terminal needs to return to the inactive state and the terminal needs to perform SRS positioning transmission in the inactive state, an RRC release message is generated, which includes at least one of the inactive state SRS first configuration and the inactive state SRS second configuration.

[0168] The base station centralized entity sends an interface message to the base station separated entity, and the interface message includes at least one of the RRC release message and the SRS positioning configuration saving indication information. After receiving the interface message, if the interface message carries the SRS positioning configuration saving indication, the base station separated entity does not release the related resources for SRS positioning of the terminal. The terminal receives the RRC release message forwarded by the base station separated entity, returns to the inactive state, and completes the transmission mode configuration of the SRS signal according to the configuration therein.

[0169] In the above positioning configuration method, the terminal is not involved, and the network side scheme has good forward compatibility, easy network deployment and implementation landing. The present application can support that the CU can obtain related configuration information from the DU side in the separated architecture, and instruct the DU side to maintain the related resource configuration when the terminal returns to the inactive state, thereby avoiding the compatibility problem between the terminal and the network caused by the error release of the related resources by the DU side due to the failure to identify that the UE has returned to the inactive state.

[0170] In an exemplary embodiment, as shown in FIG. 5, a positioning configuration method is provided, which is applied to the distributed unit DU as an example for illustration, including the following steps 502 to 504. Wherein:

[0171] Step 502, receiving a first request message from the centralized unit CU, the first request message including at least one of first SRS information and inactive state SRS positioning inquiry indication information; the first SRS information including at least one of first SRS configuration and bandwidth aggregation request indication; the bandwidth aggregation request indication being used to obtain one or more carrier aggregation configurations.

[0172] In particular, the distribution unit DU receives a first request message from the central unit CU, wherein the first request message can be an interface message, for example a first intra-site interface request message.

[0173] Optionally, the first request message comprises at least one of first SRS information, and non-active state SRS positioning inquiry indication information. The first SRS information comprises at least one of a first SRS configuration, and a bandwidth aggregation request indication, wherein the bandwidth aggregation request indication is used to obtain one or more carrier aggregation configurations.

[0174] At step 504, a first response message is sent to the central unit CU, wherein the first response message comprises at least one of second SRS information, and non-active state SRS configuration information, and wherein the second SRS information comprises at least one of a second SRS configuration, and a carrier aggregation configuration.

[0175] In particular, the distribution unit DU can send a first response message to the central unit CU after receiving the first request message, wherein the first response message is related to uplink positioning of the terminal. For example, the first response message comprises at least one of second SRS information, and non-active state SRS configuration information. Further, the second SRS information comprises at least one of a second SRS configuration, and a carrier aggregation configuration.

[0176] In one embodiment, the carrier aggregation configuration comprises one or more of a serving cell identifier and a BWP identifier.

[0177] In some embodiments, the first SRS configuration comprises at least one of an SRS transmission bandwidth, synchronization signal block SSB cell number information, and system frame number SFN offset configuration. The SSB cell number information is used to indicate an SSB number of a non-cell defined synchronization signal block NCD-SSB in a neighbor cell or a serving cell. The SRS transmission bandwidth comprises an SRS transmission bandwidth corresponding to a first frequency range FR1, or an SRS transmission bandwidth corresponding to a second frequency range FR2. The SFN offset configuration comprises at least one of an offset of SFN, and an integer subframe offset.

[0178] In one embodiment, the SRS transmission bandwidth corresponding to the first frequency range FR1 comprises at least one of 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 35MHz, 40MHz, 45MHz, 50MHz, 60MHz, 70MHz, 80MHz, 90MHz, and 100MHz. The SRS transmission bandwidth corresponding to the second frequency range FR2 comprises at least one of 50MHz, 100MHz, 200MHz, 400MHz, 800MHz, and 1600MHz.

[0179] In some embodiments, the first request message is a positioning information request message; and the first response message is a positioning information response message or a positioning information update message.

[0180] In one of the embodiments, the second SRS configuration includes at least one of at least one port configuration, at least one repetition factor, at least one SRS resource type configuration, at least one frequency hopping configuration, and at least one extended port configuration.

[0181] In one of the embodiments, the port configuration includes one of 1-port, 2-port, and 4-port configuration; and the extended port configuration includes 8-port configuration, which is configured to map 8 ports to two different subsets respectively based on non-time-division multiplexing (TDM), and the different subsets are mapped to different symbols.

[0182] In one of the embodiments, the frequency hopping configuration includes at least one of an overlap value, a frequency hopping number, a frequency hopping comb offset, a SRS transmission duration, a SRS transmission period, a SRS offset, a starting SFN where the SRS is located, a frequency hopping repetition manner, a frequency hopping cyclic shift, and a frequency hopping granularity. In one of the embodiments, the SRS resource type configuration includes one of the following: aperiodic configuration, semi-periodic configuration, and periodic configuration.

[0183] In some embodiments, the periodic configuration includes at least one of a period value, a slot offset, and a superframe periodic configuration; the aperiodic configuration includes a slot offset; the semi-periodic configuration includes at least one of a period value, a slot offset, and a superframe periodic configuration; and the superframe periodic configuration is configured to indicate whether a superframe is an even superframe or an odd superframe when the SRS is transmitted.

[0184] In one of the embodiments, the repetition factor includes at least one of a plurality of parameter values, the plurality of parameter values are respectively 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, and 14; the overlap value includes 0 RB, 1 RB, 2 RBs, and 4 RBs; the frequency hopping number includes a value range of 1-6; the frequency hopping comb offset includes a frequency hopping identifier and / or a frequency hopping sub-set; the frequency hopping identifier ranges from 0 to 1023, and the frequency hopping sub-set includes 2-comb transmission, 4-comb transmission, or 8-comb transmission.

[0185] In one of the embodiments, the inactive state SRS configuration information includes at least one of an inactive state SRS first configuration and an inactive state SRS second configuration.

[0186] The first inactive state SRS configuration includes SRS configuration on a normal uplink (NUL) carrier, SRS configuration on a supplementary uplink (SUL) carrier, bandwidth part (BWP) configuration of the NUL carrier, BWP configuration of the SUL carrier, TA timer in the inactive state, and a change threshold of reference signal received power (RSRP) in the inactive state; the second inactive state SRS configuration includes at least one of at least one inactive state SRS positioning aggregated bandwidth configuration, SRS positioning transmission frequency hopping configuration, at least one inactive state valid area pre-configuration, and at least one inactive state valid area non-pre-configuration.

[0187] In some embodiments, the inactive state SRS positioning aggregated bandwidth configuration includes at least one of subcarrier spacing and SRS carrier frequency; the SRS carrier frequency represents a carrier frequency of a set of SRS resources aggregated in bandwidth; the inactive state valid area pre-configuration includes at least one of at least one cell identity, SRS positioning configuration for the NUL carrier, SRS positioning configuration for the SUL carrier, BWP configuration on the NUL carrier, BWP configuration on the SUL carrier, and TA configuration of the valid area.

[0188] In one of the embodiments, the TA configuration of the valid area includes an inactive state SRS positioning valid area TA timer, an inactive state SRS positioning valid area RSRP change threshold, and indication information indicating whether to automatically perform TA adjustment.

[0189] In one exemplary embodiment, as shown in FIG. 6, after step 504, steps 602-604 can be included. In which:

[0190] In step 602, an interface message from a centralized unit (CU) is received, the interface message including an RRC message; the RRC message including at least one of second SRS information and inactive state SRS configuration information.

[0191] Specifically, for a terminal in a connected state, the interface message includes an RRC message, which can include one or more SRS positioning aggregated bandwidth configurations, SRS configuration of a normal uplink (NUL), and SRS configuration of a supplementary uplink (SUL); the SRS positioning aggregated bandwidth configuration includes a serving cell identity and a BWP identity. Exemplarily, the RRC message is an RRC reconfiguration message.

[0192] For a terminal which needs to switch back to the inactive state and needs to perform uplink positioning in the inactive state, the interface message can include at least one of an RRC message and SRS positioning configuration saving information. The RRC message can include inactive state SRS configuration information; and the SRS positioning configuration saving information is used to instruct a distribution unit (DU) not to release related resources of the terminal for uplink positioning. Optionally, the RRC message can be an RRC release message.

[0193] At step 604, an RRC message is sent to the terminal, and the RRC message is used to instruct the terminal to complete the transmission configuration of the SRS signal.

[0194] Specifically, for a terminal in the connected state, the RRC message is used to instruct the terminal to complete the transmission configuration of the SRS signal.

[0195] For a terminal which needs to switch back to the inactive state and needs to perform uplink positioning in the inactive state, the distribution unit (DU) can not release related resources of the terminal for uplink positioning according to the SRS positioning configuration saving information. The distribution unit (DU) can send an RRC message to the terminal, and the RRC message is used to instruct the terminal to enter the inactive state and complete the transmission configuration of the SRS signal, i.e., the terminal can enter the inactive state and complete the transmission configuration of the SRS signal according to the RRC message.

[0196] It can be understood that the specific implementation process of the above positioning configuration method performed from the perspective of the distribution unit (DU) can refer to the description of each embodiment of the positioning configuration method performed from the perspective of the centralized unit (CU) in the foregoing, and will not be described here.

[0197] In one exemplary embodiment, an uplink positioning method is provided, which is described by taking a terminal as an example and includes the following steps:

[0198] An RRC message is received from a network entity, and the RRC message includes at least one of second SRS information and inactive state SRS configuration information; the second SRS information includes at least one of second SRS configuration and carrier aggregation configuration.

[0199] In one embodiment, the method further includes completing the transmission configuration of the SRS signal according to the RRC message.

[0200] In one embodiment, the network entity is a distribution unit (DU), a centralized unit (CU), or a base station.

[0201] In one embodiment, the RRC message is an RRC reconfiguration message or an RRC release message.

[0202] Specifically, the terminal in the connected state receives an RRC message from the centralized unit CU, and can complete the transmission configuration of the SRS signal according to the RRC message. Exemplarily, the RRC message is an RRC reconfiguration message.

[0203] In addition, for a terminal that needs to switch back to the inactive state and needs to perform uplink positioning in the inactive state, the distributed unit DU can send an RRC message from the centralized unit CU to the terminal, and the terminal can enter the inactive state and complete the transmission configuration of the SRS signal according to the RRC message. Exemplarily, the RRC message can be an RRC release message.

[0204] In one of the embodiments, the second SRS configuration includes at least one of at least one port configuration, at least one repetition factor, at least one SRS resource type configuration, at least one frequency hopping configuration, and at least one extended port configuration.

[0205] In one of the embodiments, the port configuration includes one of 1-port, 2-port, and 4-port configurations; and the extended port configuration includes an 8-port configuration, and the 8-port configuration is to map 8 ports to two different subsets respectively based on non-time division multiplexing (TDM), and the different subsets are mapped to different symbols.

[0206] In one of the embodiments, the frequency hopping configuration includes at least one of an overlap value, a frequency hopping number, a frequency hopping comb offset, an SRS transmission duration, an SRS transmission period, an SRS offset, a starting SFN where the SRS is located, a frequency hopping repetition mode, a frequency hopping cyclic shift, and a frequency hopping granularity. In one of the embodiments, the SRS resource type configuration includes one of the following: aperiodic configuration, semi-periodic configuration, and periodic configuration.

[0207] In one of the embodiments, the periodic configuration includes at least one of a periodicity value, a slot offset, and a periodicity configuration of a super frame; the aperiodic configuration includes a slot offset; the semi-periodic configuration includes at least one of a periodicity value, a slot offset, and a periodicity configuration of a super frame; and the periodicity configuration of the super frame is used to indicate whether a positioning SRS transmission is in an even super frame or an odd super frame.

[0208] In one of the embodiments, the repetition factor includes at least one of a plurality of parameter values; the plurality of parameter values are respectively 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, and 14; the overlap value includes 0 RB, 1 RB, 2 RBs, and 4 RBs; the frequency hopping number has a value range of 1-6; the frequency hopping comb offset includes a frequency hopping identifier and / or a frequency hopping sub-set; the frequency hopping identifier has a range of 0 to 1023, and the frequency hopping sub-set includes 2-comb transmission, 4-comb transmission, or 8-comb transmission.

[0209] In one of the embodiments, the inactive state SRS configuration information includes at least one of the following: a first inactive state SRS configuration, a second inactive state SRS configuration.

[0210] The first inactive state SRS configuration includes at least one of the following: a configuration of SRS on a normal uplink (NUL) carrier, a configuration of SRS on a supplementary uplink (SUL) carrier, a bandwidth part (BWP) configuration of the NUL carrier, a BWP configuration of the SUL carrier, a TA timer in the inactive state, and a change threshold of reference signal received power (RSRP) in the inactive state.

[0211] The second inactive state SRS configuration includes at least one of the following: at least one inactive state SRS positioning aggregated bandwidth configuration, an SRS positioning transmission frequency hopping configuration, at least one inactive state valid area pre-configuration, and at least one inactive state valid area non-pre-configuration.

[0212] In one of the embodiments, the inactive state SRS positioning aggregated bandwidth configuration includes at least one of the following: a subcarrier spacing, and an SRS carrier frequency, wherein the SRS carrier frequency represents a carrier frequency of a set of SRS resources for bandwidth aggregation.

[0213] The inactive state valid area pre-configuration includes at least one of the following: at least one cell identification, an SRS positioning configuration for the NUL carrier, an SRS positioning configuration for the SUL carrier, a BWP configuration on the NUL carrier, a BWP configuration on the SUL carrier, and a TA configuration of the valid area.

[0214] In one of the embodiments, the TA configuration of the valid area includes at least one of the following: an SRS positioning valid area TA timer in the inactive state, an SRS positioning valid area RSRP change threshold in the inactive state, and indication information indicating whether to automatically perform TA adjustment.

[0215] It can be understood that the specific implementation process of the uplink positioning method described above from the perspective of the terminal can refer to the description of each embodiment of the positioning configuration method from the perspective of the centralized unit (CU) and the distributed unit (DU) in the foregoing, which will not be described here.

[0216] In one exemplary embodiment, FIG. 7 provides a signaling interaction flowchart of an uplink positioning method. As shown in FIG. 7, taking a base station centralized entity (gNB-CU), a base station separated entity (gNB-DU), and a terminal (UE) as examples, a process in which the gNB-CU configures an uplink single carrier positioning measurement of SRS for the UE in a connected state is described, wherein a cell 1 of the gNB-DU supports one NCD-SSB. The method can include the following steps:

[0217] The gNB-CU determines first configuration information sent by the UE when using SRS positioning, and second configuration information that needs to be obtained from the gNB-DU.

[0218] The first configuration information can include a first SRS configuration, such as an FR1 SRS transmission bandwidth, an FR2 SRS transmission bandwidth, SSB cell number information, and an SFN offset configuration; wherein the FR1 SRS transmission bandwidth can include 15MHz; the SFN offset configuration can include an offset of SFN and an integer subframe offset; the SSB cell number information can be #2.

[0219] The gNB-CU sends a POSITIONING INFORMATION REQUEST message to the gNB-DU, which can be used to instruct the gNB-DU to configure the UE to send an SRS signal for uplink positioning measurement, and to instruct the gNB-DU to obtain the second configuration information, wherein the POSITIONING INFORMATION REQUEST message includes first SRS information, such as the first SRS configuration.

[0220] After receiving the POSITIONING INFORMATION REQUEST message, the gNB-DU determines the message content of the POSITIONING INFORMATION RESPONSE according to the first SRS configuration carried in the message, which can include a second SRS configuration, such as one extended port and one SRS resource; wherein the extended port is an 8-port TDM. The SRS resource can include a repetition factor, an SRS resource type configuration, a frequency hopping configuration; wherein the repetition factor is 2; the SRS resource type configuration can be a periodic configuration; the frequency hopping configuration includes an overlap value, a frequency hopping number, a frequency hopping comb offset, an SRS transmission duration, an SRS transmission period and offset, an SRS starting SFN, a frequency hopping repetition mode, a frequency hopping cyclic shift, a frequency hopping granularity; wherein the overlap value is 0 RB; the frequency hopping number is 2; the frequency hopping comb offset includes a frequency hopping identifier and a frequency hopping sub-set, wherein the frequency hopping identifier is 100, and the frequency hopping sub-set includes 2 comb transmission; the frequency hopping repetition mode table is symbol level; the frequency hopping cyclic shift includes a frequency hopping identifier and a frequency hopping sub-set, wherein the frequency hopping sub-set is 2 comb transmission; the frequency hopping granularity is "yes", and the SRS transmission duration includes 2 time slots.

[0221] After the gNB-CU receives the POSITIONING INFORMATION RESPONSE message, an RRC reconfiguration message is generated for the UE in a connected state, and the RRC reconfiguration message can include an SRS positioning aggregated bandwidth configuration and an SRS configuration; the SRS positioning aggregated bandwidth configuration includes the identities of a serving cell and a BWP; and the SRS configuration includes a frequency hopping configuration and a carrier frequency.

[0222] After the UE receives the RRC reconfiguration message, the UE configures the transmission mode of the SRS signal according to the configuration in the RRC reconfiguration message.

[0223] It should be understood that, although each step in the flowchart involved in each embodiment described above is shown in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other sequences. Moreover, at least part of the steps in the flowchart involved in each embodiment described above can include multiple steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or stages in other steps.

[0224] In one embodiment, as shown in FIG. 8, a positioning configuration apparatus is provided, which is applied to a centralized unit CU, and the apparatus includes:

[0225] The request message sending module 801 is configured to send a first request message to a distributed unit DU, and the first request message includes at least one of first SRS information and non-active state SRS positioning inquiry indication information; the first SRS information includes at least one of a first SRS configuration and a bandwidth aggregation request indication; and the bandwidth aggregation request indication is used to obtain one or more carrier aggregation configurations.

[0226] The response message receiving module 802 is configured to receive a first response message from the distributed unit DU, and the first response message includes at least one of second SRS information and non-active state SRS configuration information; the second SRS information includes at least one of a second SRS configuration and a carrier aggregation configuration.

[0227] In one embodiment, the carrier aggregation configuration includes one or more serving cell identities and BWP identities.

[0228] In one of the embodiments, the first SRS configuration comprises at least one of a SRS transmission bandwidth, a synchronization signal block (SSB) cell number information, a system frame number (SFN) offset configuration; wherein the SSB cell number information is used to indicate a SSB number of a non-cell defined synchronization signal block (NCD-SSB) in one of a neighbor cell or a serving cell; the SRS transmission bandwidth comprises a SRS transmission bandwidth corresponding to a first frequency range (FR1) or a SRS transmission bandwidth corresponding to a second frequency range (FR2); and the SFN offset configuration comprises at least one of an offset of the SFN or an integer subframe offset.

[0229] In one of the embodiments, the SRS transmission bandwidth corresponding to the first frequency range (FR1) comprises at least one of 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 35MHz, 40MHz, 45MHz, 50MHz, 60MHz, 70MHz, 80MHz, 90MHz, 100MHz, and the SRS transmission bandwidth corresponding to the second frequency range (FR2) comprises at least one of 50MHz, 100MHz, 200MHz, 400MHz, 800MHz, 1600MHz.

[0230] In one of the embodiments, the first request message is a positioning information request message, and the first response message is a positioning information response message or a positioning information update message.

[0231] In one of the embodiments, the second SRS configuration comprises at least one of at least one port configuration, at least one repetition factor, at least one SRS resource type configuration, at least one frequency hopping configuration, at least one extended port configuration.

[0232] In one of the embodiments, the port configuration comprises one of 1-port, 2-port, 4-port configuration; and the extended port configuration comprises 8-port configuration, and the 8-port configuration is to map 8 ports to two different subsets respectively based on non-time division multiplexing (TDM), and the different subsets are mapped to different symbols.

[0233] In one of the embodiments, the frequency hopping configuration comprises at least one of an overlap value, a frequency hopping number, a frequency hopping comb offset, a SRS transmission duration, a SRS transmission period, a SRS offset, a starting SFN where the SRS is located, a frequency hopping repetition manner, a frequency hopping cyclic shift, a frequency hopping granularity. In one of the embodiments, the SRS resource type configuration comprises one of aperiodic configuration, semi-periodic configuration, periodic configuration.

[0234] In one of the embodiments, the periodic configuration includes at least one of a periodicity value, a slot offset, a periodic configuration of a superframe; the aperiodic configuration includes a slot offset; the semi-periodic configuration includes at least one of a periodicity value, a slot offset, a periodic configuration of a superframe; the periodic configuration of a superframe is used to indicate whether the positioning SRS transmission time is an even superframe or an odd superframe.

[0235] In one of the embodiments, the repetition factor includes at least one of a plurality of parameter values; the plurality of parameter values are respectively 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14; the overlap value includes 0 RB, 1 RB, 2 RBs, and 4 RBs; the value range of the frequency hopping quantity includes 1-6; the frequency hopping comb offset includes a frequency hopping identifier and / or a frequency hopping sub-set; the frequency hopping identifier ranges from 0 to 1023, and the frequency hopping sub-set includes 2-comb transmission, 4-comb transmission, or 8-comb transmission.

[0236] In one of the embodiments, the inactive state SRS configuration information includes at least one of an inactive state SRS first configuration, an inactive state SRS second configuration; the inactive state SRS first configuration includes a configuration of SRS on a normal uplink NUL carrier, a configuration of SRS on a supplementary uplink SUL carrier, a bandwidth part BWP configuration of the NUL carrier, a BWP configuration of the SUL carrier, a TA timer in the inactive state, and a change threshold of reference signal received power RSRP in the inactive state; the inactive state SRS second configuration includes at least one of at least one inactive state SRS positioning aggregated bandwidth configuration, an SRS positioning transmission frequency hopping configuration, at least one inactive state valid area pre-configuration, and at least one inactive state valid area non-pre-configuration.

[0237] In one of the embodiments, the inactive state SRS positioning aggregated bandwidth configuration includes at least one of a subcarrier spacing, an SRS carrier frequency; wherein the SRS carrier frequency represents a carrier frequency of a SRS resource set for bandwidth aggregation; the inactive state valid area pre-configuration includes at least one of at least one cell identifier, an SRS positioning configuration for a NUL carrier, an SRS positioning configuration for a SUL carrier, a BWP configuration on the NUL carrier, a BWP configuration on the SUL carrier, and a TA configuration of a valid area.

[0238] In one of the embodiments, the TA configuration of the valid area includes an SRS positioning valid area TA timer in the inactive state, an SRS positioning valid area RSRP change threshold in the inactive state, and indication information indicating whether to automatically perform TA adjustment.

[0239] In one of the embodiments, the apparatus further includes an interface message sending module configured to send an interface message to a distribution unit DU, the interface message including an RRC message; the RRC message including at least one of the second SRS information, the inactive state SRS configuration information; the interface message being configured to instruct the distribution unit DU to send the RRC message to the terminal, the RRC message being configured to instruct the terminal to complete the transmission configuration of the SRS signal.

[0240] In one of the embodiments, the RRC message is an RRC reconfiguration message or an RRC release message.

[0241] In one of the embodiments, as shown in FIG. 9, a positioning configuration apparatus is provided, applied to a distribution unit DU, and the apparatus includes:

[0242] A request message receiving module 901 is configured to receive a first request message from a centralized unit CU, the first request message including at least one of the first SRS information, the inactive state SRS positioning inquiry indication information; the first SRS information including at least one of the first SRS configuration, the bandwidth aggregation request indication; the bandwidth aggregation request indication being configured to obtain one or more carrier aggregation configurations.

[0243] A response message sending module 902 is configured to send a first response message to the centralized unit CU; the first response message including at least one of the second SRS information, the inactive state SRS configuration information; the second SRS information including at least one of the second SRS configuration, the carrier aggregation configuration.

[0244] In one of the embodiments, the carrier aggregation configuration includes one or more serving cell identifiers and BWP identifiers.

[0245] In one of the embodiments, the first SRS configuration includes at least one of the SRS transmission bandwidth, the synchronization signal block SSB cell number information, the system frame number SFN offset configuration; the SSB cell number information being configured to indicate an SSB number of a non-cell defined synchronization signal block NCD-SSB in a neighbor cell or a serving cell; the SRS transmission bandwidth including an SRS transmission bandwidth corresponding to a first frequency range FR1 or an SRS transmission bandwidth corresponding to a second frequency range FR2; the SFN offset configuration including at least one of an offset of the SFN, an integer subframe offset.

[0246] In one of the embodiments, the SRS transmission bandwidth corresponding to the first frequency range FR1 includes at least one of 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 35MHz, 40MHz, 45MHz, 50MHz, 60MHz, 70MHz, 80MHz, 90MHz, 100MHz, and the SRS transmission bandwidth corresponding to the second frequency range FR2 includes at least one of 50MHz, 100MHz, 200MHz, 400MHz, 800MHz, 1600MHz.

[0247] In one of the embodiments, the first request message is a positioning information request message, and the first response message is a positioning information response message or a positioning information update message.

[0248] In one of the embodiments, the second SRS configuration includes at least one of at least one port configuration, at least one repetition factor, at least one SRS resource type configuration, at least one frequency hopping configuration, and at least one extended port configuration.

[0249] In one of the embodiments, the port configuration includes one of 1-port, 2-port, and 4-port configuration, and the extended port configuration includes 8-port configuration, and the 8-port configuration is to map 8 ports to two different subsets respectively based on non-time division multiplexing (TDM), and the different subsets are mapped to different symbols.

[0250] In one of the embodiments, the frequency hopping configuration includes at least one of overlap value, frequency hopping number, frequency hopping comb offset, SRS transmission duration, SRS transmission period, SRS offset, starting SFN where the SRS is located, frequency hopping repetition mode, frequency hopping cyclic shift, and frequency hopping granularity. In one of the embodiments, the SRS resource type configuration includes one of aperiodic configuration, semi-periodic configuration, and periodic configuration.

[0251] In one of the embodiments, the periodic configuration includes at least one of periodicity value, slot offset, and periodicity configuration of hyper frame, the aperiodic configuration includes slot offset, and the semi-periodic configuration includes at least one of periodicity value, slot offset, and periodicity configuration of hyper frame, and the periodicity configuration of hyper frame is used to indicate whether the hyper frame is even or odd when the positioning SRS is transmitted.

[0252] In one of the embodiments, the repetition factor includes at least one of a plurality of parameter values, the plurality of parameter values are respectively 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, and 14, the overlap value includes 0 RB, 1 RB, 2 RB, and 4 RB, the frequency hopping number includes a value range of 1-6, the frequency hopping comb offset includes frequency hopping identification and / or frequency hopping sub-set, the frequency hopping identification ranges from 0 to 1023, and the frequency hopping sub-set includes 2-comb transmission, 4-comb transmission, or 8-comb transmission.

[0253] In one of the embodiments, the inactive state SRS configuration information includes at least one of a first inactive state SRS configuration and a second inactive state SRS configuration; the first inactive state SRS configuration includes a configuration of SRS on a normal uplink (NUL) carrier, a configuration of SRS on a supplementary uplink (SUL) carrier, a bandwidth part (BWP) configuration of the NUL carrier, a BWP configuration of the SUL carrier, a TA timer in the inactive state, and a change threshold of a reference signal received power (RSRP) in the inactive state; the second inactive state SRS configuration includes at least one of at least one inactive state SRS positioning aggregated bandwidth configuration, an SRS positioning transmission frequency hopping configuration, at least one inactive state valid area pre-configuration, and at least one inactive state valid area non-pre-configuration.

[0254] In one of the embodiments, the inactive state SRS positioning aggregated bandwidth configuration includes at least one of a subcarrier spacing and an SRS carrier frequency; the SRS carrier frequency represents a carrier frequency of a bandwidth aggregated SRS resource set; the inactive state valid area pre-configuration includes at least one of at least one cell identifier, an SRS positioning configuration for a NUL carrier, an SRS positioning configuration for a SUL carrier, a BWP configuration on the NUL carrier, a BWP configuration on the SUL carrier, and a TA configuration of a valid area.

[0255] In one of the embodiments, the TA configuration of the valid area includes an SRS positioning valid area TA timer in the inactive state, an SRS positioning valid area RSRP change threshold in the inactive state, and indication information indicating whether to automatically perform TA adjustment.

[0256] In one of the embodiments, the apparatus further includes an interface message receiving module configured to receive an interface message from a centralized unit (CU), the interface message including an RRC message; the RRC message including at least one of second SRS information and inactive state SRS configuration information.

[0257] The configuration message sending module is configured to send a first RRC message to the terminal, the first RRC message being used to instruct the terminal to complete transmission configuration of the SRS signal.

[0258] In one of the embodiments, the first RRC message is an RRC reconfiguration message.

[0259] In one of the embodiments, the apparatus further includes: an interface message receiving module, configured to receive an interface message from a centralized unit (CU), the interface message including at least one of a second RRC message and SRS positioning configuration saving information, the second RRC message including inactive state SRS configuration information; and the SRS positioning configuration saving information being used to instruct a distributed unit (DU) not to release relevant resources for uplink positioning of the terminal; and a configuration message sending module, configured to send an RRC message to the terminal, the RRC message being used to instruct the terminal to complete transmission configuration of the SRS signal.

[0260] In one of the embodiments, the RRC message is an RRC reconfiguration message or an RRC release message.

[0261] The modules in the above positioning configuration apparatus can be all or partially implemented by software, hardware, and combinations thereof. The modules can be embedded in or independent of a processor in a computer device in a hardware form, or stored in a memory in the computer device in a software form, so as to be called and executed by a processor to perform operations corresponding to the modules.

[0262] In one of the embodiments, an uplink positioning apparatus is provided, applied to a terminal, and the apparatus includes:

[0263] a configuration message receiving module, configured to receive an RRC message from a network entity, the RRC message including at least one of second SRS information and inactive state SRS configuration information; and the second SRS information including at least one of second SRS configuration and carrier aggregation configuration.

[0264] In one of the embodiments, the network entity is a distributed unit (DU), a centralized unit (CU), or a base station.

[0265] In one of the embodiments, the RRC message is an RRC reconfiguration message or an RRC release message.

[0266] In one of the embodiments, the second SRS configuration includes at least one of at least one port configuration, at least one repetition factor, at least one SRS resource type configuration, at least one frequency hopping configuration, and at least one extended port configuration.

[0267] In one of the embodiments, the port configuration includes one of 1-port, 2-port, and 4-port configurations; and the extended port configuration includes 8-port configuration, the 8-port configuration being used to map eight ports to two different subsets based on non-time division multiplexing (TDM), and the different subsets being mapped to different symbols.

[0268] In one of the embodiments, the frequency hopping configuration includes at least one of an overlap value, a number of frequency hops, a frequency hopping comb offset, a SRS transmission duration, a SRS transmission periodicity, a SRS offset, a starting SFN where the SRS is located, a frequency hopping repetition manner, a frequency hopping cyclic shift, a frequency hopping granularity. In one of the embodiments, the SRS resource type configuration includes one of the following: aperiodic configuration, semi-persistent configuration, periodic configuration.

[0269] In one of the embodiments, the periodic configuration includes at least one of a periodicity value, a slot offset, a periodicity configuration of a hyper frame; the aperiodic configuration includes a slot offset; the semi-persistent configuration includes at least one of a periodicity value, a slot offset, a periodicity configuration of a hyper frame; the periodicity configuration of a hyper frame is used to indicate whether a positioning SRS transmission time is an even hyper frame or an odd hyper frame.

[0270] In one of the embodiments, the repetition factor includes at least one of a plurality of parameter values; the plurality of parameter values are respectively 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14; the overlap value includes 0 RB, 1 RB, 2 RBs, and 4 RBs; the number of frequency hops includes a value range of 1-6; the frequency hopping comb offset includes a frequency hopping identifier and / or a frequency hopping sub-set; the frequency hopping identifier ranges from 0 to 1023, and the frequency hopping sub-set includes 2-comb transmission, 4-comb transmission, or 8-comb transmission.

[0271] In one of the embodiments, the inactive state SRS configuration information includes at least one of an inactive state SRS first configuration, an inactive state SRS second configuration; the inactive state SRS first configuration includes a configuration of SRS on a normal uplink NUL carrier, a configuration of SRS on a supplementary uplink SUL carrier, a bandwidth part BWP configuration of the NUL carrier, a BWP configuration of the SUL carrier, a TA timer in the inactive state, and a change threshold of a reference signal receiving power RSRP in the inactive state; the inactive state SRS second configuration includes at least one of the following: at least one inactive state SRS positioning aggregated bandwidth configuration, a SRS positioning transmission frequency hopping configuration, at least one inactive state valid area pre-configuration, at least one inactive state valid area non-pre-configuration.

[0272] In one of the embodiments, the inactive state SRS positioning aggregated bandwidth configuration includes at least one of a subcarrier spacing, a SRS carrier frequency; the SRS carrier frequency represents a carrier frequency of a SRS resource set for bandwidth aggregation; the inactive state valid area pre-configuration includes at least one of the following: at least one cell identifier, a SRS positioning configuration for a NUL carrier, a SRS positioning configuration for a SUL carrier, a BWP configuration on the NUL carrier, a BWP configuration on the SUL carrier, a TA configuration of a valid area.

[0273] In one of the embodiments, the TA configuration of the active region includes a SRS positioning active region TA timer in the inactive state, a SRS positioning active region RSRP change threshold in the inactive state, and indication information indicating whether to automatically perform TA adjustment.

[0274] In one of the embodiments, the apparatus further includes a transmission configuration module configured to complete transmission configuration of the SRS signal according to the RRC message.

[0275] The modules in the uplink positioning apparatus can be implemented by software, hardware, or a combination thereof. The modules can be embedded in or independent of a processor in a computer device in hardware form, or stored in a memory in a computer device in software form, so as to be invoked and executed by a processor to perform operations corresponding to the modules.

[0276] In one of the embodiments, a centralized unit CU is provided, including a memory and a processor, the memory storing a computer program, and the processor implementing the steps of the positioning configuration method from the perspective of the centralized unit CU when executing the computer program.

[0277] In one of the embodiments, a distributed unit DU is provided, including a memory and a processor, the memory storing a computer program, and the processor implementing the steps of the positioning configuration method from the perspective of the distributed unit DU when executing the computer program.

[0278] In one of the embodiments, the network device (e.g., network entity) can be an access network device, and FIG. 10 is a structural schematic diagram of an access network device according to an embodiment of the present application. The access network device can include a receiver 31, a memory 32, a processor 33, at least one communication bus 34, and a transmitter 35. The communication bus 34 is configured to realize communication connection between elements. The memory 32 can include a high-speed RAM memory, and can also include a non-volatile storage NVM, such as at least one disk memory. The memory 32 can store various programs for completing various processing functions and implementing the method steps of the embodiment. In the embodiment, the transmitter 35 can be a radio frequency processing module or a baseband processing module in the access network device, and the receiver 31 can also be a radio frequency processing module or a baseband processing module in the access network device. The transmitter 35 and the receiver 31 can be integrated together to form a transceiver. The transmitter 35 and the receiver 31 can be coupled to the processor 33, and can realize receiving or transmitting actions under the indication or control of the processor 33.

[0279] In an embodiment, the access network device is taken as a centralized unit (CU) for example, the transmitter 35 is configured to send a first request message to a distributed unit (DU), the first request message comprising at least one of first SRS information and non-active state SRS positioning query indication information; the first SRS information comprising at least one of a first SRS configuration and a bandwidth aggregation request indication; the bandwidth aggregation request indication being used to obtain one or more carrier aggregation configurations.

[0280] The receiver 31 is configured to receive a first response message from the distributed unit (DU); the first response message comprising at least one of second SRS information and non-active state SRS configuration information; the second SRS information comprising at least one of a second SRS configuration and a carrier aggregation configuration.

[0281] In an embodiment, the carrier aggregation configuration comprises one or more of a serving cell identifier and a BWP identifier.

[0282] In an embodiment, the first SRS configuration comprises at least one of an SRS transmission bandwidth, synchronization signal block (SSB) cell number information, and system frame number (SFN) offset configuration;

[0283] The SSB cell number information is used to indicate an SSB number of a non-cell defined synchronization signal block (NCD-SSB) in a neighbor cell or a serving cell; the SRS transmission bandwidth comprises an SRS transmission bandwidth corresponding to a first frequency range (FR1) or an SRS transmission bandwidth corresponding to a second frequency range (FR2); and the SFN offset configuration comprises at least one of an offset of the SFN and an integer subframe offset.

[0284] In an embodiment, the SRS transmission bandwidth corresponding to the first frequency range (FR1) comprises at least one of 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 35MHz, 40MHz, 45MHz, 50MHz, 60MHz, 70MHz, 80MHz, 90MHz, and 100MHz; and the SRS transmission bandwidth corresponding to the second frequency range (FR2) comprises at least one of 50MHz, 100MHz, 200MHz, 400MHz, 800MHz, and 1600MHz.

[0285] In an embodiment, the first request message is a positioning information request message; and the first response message is a positioning information response message or a positioning information update message.

[0286] In an embodiment, the second SRS configuration comprises at least one of at least one port configuration, at least one repetition factor, at least one SRS resource type configuration, at least one frequency hopping configuration, and at least one extended port configuration.

[0287] In one embodiment, the port configuration comprises one of 1-port, 2-port, 4-port configuration; the extended port configuration comprises 8-port configuration, the 8-port configuration is to map 8 ports to two different subsets respectively based on non-time division multiplexing (TDM), and the different subsets are mapped to different symbols.

[0288] In one embodiment, the frequency hopping configuration comprises at least one of overlap value, frequency hopping number, frequency hopping comb offset, SRS transmission duration, SRS transmission period, SRS offset, starting SFN where SRS is located, frequency hopping repetition manner, frequency hopping cyclic shift, frequency hopping granularity.

[0289] In one embodiment, the periodic configuration comprises at least one of periodicity value, slot offset, periodicity configuration of superframe; the aperiodic configuration comprises slot offset; the semi-periodic configuration comprises at least one of periodicity value, slot offset, periodicity configuration of superframe; the periodicity configuration of superframe is used to indicate whether the superframe is even superframe or odd superframe when positioning SRS is transmitted.

[0290] In one embodiment, the repetition factor comprises at least one of a plurality of parameter values; the plurality of parameter values are 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14 respectively; the overlap value comprises 0 RB, 1 RB, 2 RB, and 4 RB; the frequency hopping number comprises a value range of 1-6; the frequency hopping comb offset comprises frequency hopping identification and / or frequency hopping sub-set; the frequency hopping identification ranges from 0 to 1023, and the frequency hopping sub-set comprises 2-comb transmission, 4-comb transmission, or 8-comb transmission.

[0291] In one embodiment, the inactive state SRS configuration information comprises at least one of inactive state SRS first configuration, inactive state SRS second configuration; the inactive state SRS first configuration comprises configuration of SRS on normal uplink (NUL) carrier, configuration of SRS on supplementary uplink (SUL) carrier, bandwidth part (BWP) configuration of NUL carrier, BWP configuration of SUL carrier, TA timer in inactive state, and change threshold of reference signal received power (RSRP) in inactive state; the inactive state SRS second configuration comprises at least one of at least one inactive state SRS positioning aggregated bandwidth configuration, SRS positioning transmission frequency hopping configuration, at least one inactive state active area pre-configuration, at least one inactive state active area non-pre-configuration.

[0292] In an embodiment, the non-active state SRS positioning aggregated bandwidth configuration comprises at least one of a subcarrier spacing, an SRS carrier frequency; wherein the SRS carrier frequency represents a carrier frequency of a SRS resource set for bandwidth aggregation; the non-active state active area pre-configuration comprises at least one of at least one cell identification, an SRS positioning configuration for a NUL carrier, an SRS positioning configuration for a SUL carrier, a BWP configuration on the NUL carrier, a BWP configuration on the SUL carrier, a TA configuration of the active area.

[0293] In an embodiment, the TA configuration of the active area comprises a non-active state SRS positioning active area TA timer, a non-active state SRS positioning active area RSRP change threshold, and indication information representing whether to automatically perform TA adjustment.

[0294] In an embodiment, the transmitter 35 is further configured to send an interface message to a distributed unit DU, the interface message comprising an RRC message; the RRC message comprising at least one of the second SRS information, the non-active state SRS configuration information; the interface message being used to instruct the distributed unit DU to send the RRC message to the terminal, the RRC message being used to instruct the terminal to complete the transmission configuration of the SRS signal.

[0295] In an embodiment, the RRC message is an RRC reconfiguration message or an RRC release message.

[0296] Further, taking the access network device as the distributed unit DU as an example, in the embodiment, the receiver 31 is configured to receive a first request message from a centralized unit CU, the first request message comprising at least one of first SRS information, non-active state SRS positioning inquiry indication information; the first SRS information comprising at least one of a first SRS configuration, a bandwidth aggregation request indication; the bandwidth aggregation request indication being used to obtain one or more carrier aggregation configurations.

[0297] The transmitter 35 is configured to send a first response message to the centralized unit CU; the first response message comprising at least one of the second SRS information, the non-active state SRS configuration information; the second SRS information comprising at least one of a second SRS configuration, a carrier aggregation configuration.

[0298] In an embodiment, the carrier aggregation configuration comprises one or more serving cell identifications and BWP identifications.

[0299] In an embodiment, the first SRS configuration comprises at least one of a SRS transmission bandwidth, a synchronization signal block (SSB) cell number information, a system frame number (SFN) offset configuration; wherein the SSB cell number information is used to indicate a SSB number of a non-cell defined synchronization signal block (NCD-SSB) in one of a neighbor cell or a serving cell; the SRS transmission bandwidth comprises a SRS transmission bandwidth corresponding to a first frequency range (FR1) or a SRS transmission bandwidth corresponding to a second frequency range (FR2); the SFN offset configuration comprises at least one of an offset of SFN, an integer subframe offset.

[0300] In an embodiment, the SRS transmission bandwidth corresponding to the first frequency range (FR1) comprises at least one of 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 35MHz, 40MHz, 45MHz, 50MHz, 60MHz, 70MHz, 80MHz, 90MHz, 100MHz, and the SRS transmission bandwidth corresponding to the second frequency range (FR2) comprises at least one of 50MHz, 100MHz, 200MHz, 400MHz, 800MHz, 1600MHz.

[0301] In an embodiment, the first request message is a positioning information request message, and the first response message is a positioning information response message or a positioning information update message.

[0302] In an embodiment, the second SRS configuration comprises at least one of at least one port configuration, at least one repetition factor, at least one SRS resource type configuration, at least one frequency hopping configuration, at least one extended port configuration.

[0303] In an embodiment, the port configuration comprises one of 1-port, 2-port, 4-port configuration; the extended port configuration comprises 8-port configuration, and the 8-port configuration is based on non-time division multiplexing (TDM) to map 8 ports to two different subsets respectively, and the different subsets are mapped to different symbols.

[0304] In an embodiment, the frequency hopping configuration comprises at least one of an overlap value, a frequency hopping number, a frequency hopping comb offset, a SRS transmission duration, a SRS transmission period, a SRS offset, a starting SFN where the SRS is located, a frequency hopping repetition manner, a frequency hopping cyclic shift, a frequency hopping granularity. In an embodiment, the SRS resource type configuration comprises one of aperiodic configuration, semi-periodic configuration, periodic configuration.

[0305] In one embodiment, the periodic configuration includes at least one of a periodicity value, a slot offset, a periodic configuration of a superframe; the aperiodic configuration includes a slot offset; the semi-periodic configuration includes at least one of a periodicity value, a slot offset, a periodic configuration of a superframe; the periodic configuration of a superframe is used to indicate whether the positioning SRS transmission time is an even superframe or an odd superframe.

[0306] In one embodiment, the repetition factor includes at least one of a plurality of parameter values; the plurality of parameter values are 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, respectively; the overlap value includes 0 RB, 1 RB, 2 RBs, and 4 RBs; the frequency hopping quantity value range includes 1-6; the frequency hopping comb offset includes a frequency hopping identity and / or a frequency hopping sub-set; the frequency hopping identity ranges from 0 to 1023, and the frequency hopping sub-set includes 2-comb transmission, 4-comb transmission, or 8-comb transmission.

[0307] In one embodiment, the inactive state SRS configuration information includes at least one of an inactive state SRS first configuration, an inactive state SRS second configuration; the inactive state SRS first configuration includes a configuration of SRS on a normal uplink (NUL) carrier, a configuration of SRS on a supplementary uplink (SUL) carrier, a bandwidth part (BWP) configuration of the NUL carrier, a BWP configuration of the SUL carrier, a TA timer at the inactive state, and a change threshold of a reference signal received power (RSRP) at the inactive state; the inactive state SRS second configuration includes at least one of an inactive state SRS positioning aggregated bandwidth configuration, an SRS positioning transmission frequency hopping configuration, at least one inactive state active area pre-configuration, and at least one inactive state active area non-pre-configuration.

[0308] In one embodiment, the inactive state SRS positioning aggregated bandwidth configuration includes at least one of a subcarrier spacing, and an SRS carrier frequency; the SRS carrier frequency represents a carrier frequency of a SRS resource set for bandwidth aggregation; the inactive state active area pre-configuration includes at least one of at least one cell identity, an SRS positioning configuration for a NUL carrier, an SRS positioning configuration for a SUL carrier, a BWP configuration on the NUL carrier, a BWP configuration on the SUL carrier, and a TA configuration of an active area.

[0309] In one embodiment, the TA configuration of the active area includes an SRS positioning active area TA timer at the inactive state, an SRS positioning active area RSRP change threshold at the inactive state, and indication information indicating whether to automatically perform TA adjustment.

[0310] In one embodiment, the receiver 31 is further configured to receive an interface message from a centralized unit (CU), the interface message including an RRC message; the RRC message including at least one of the second SRS information, and the inactive state SRS configuration information.

[0311] The transmitter 35 is further configured to send an RRC message to the terminal, the RRC message being used to instruct the terminal to complete the transmission configuration of the SRS signal.

[0312] In one embodiment, the RRC message is an RRC reconfiguration message or an RRC release message.

[0313] In one exemplary embodiment, a terminal is provided, which comprises a memory and a processor, the memory storing a computer program, and the processor implementing the steps of the above-mentioned uplink positioning method from the perspective of the terminal when executing the computer program.

[0314] In one embodiment, Fig. 11 is a structural schematic diagram of the terminal provided by the embodiments of the present application. The terminal 700 shown in Fig. 11 comprises at least one processor 701, a memory 702, at least one network interface 704 and a user interface 703. The various components in the terminal 700 are coupled together through a bus system 705. It can be understood that the bus system 705 is used to realize the connection and communication between the components. The bus system 705 includes not only a data bus, but also a power bus, a control bus and a status signal bus. However, for the purpose of clear illustration, all kinds of buses are marked as the bus system 705 in Fig. 11. In addition, the transceiver 706 is further included in the embodiments of the present application, and the transceiver can be multiple elements, i.e., comprising a transmitter and a receiver, and providing a unit for communicating with various other devices on a transmission medium.

[0315] The user interface 703 can include a display, a keyboard or a clicking device (such as a mouse, a trackball, a touchpad or a touch screen, etc.).

[0316] It is to be understood that the memory 702 in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or a flash memory. The volatile memory can be a random access memory (Random Access Memory, RAM) used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM). The memory 702 of the system and method described in the embodiments of the present application is intended to include, but not limited to, these and any other suitable types of memory.

[0317] In some embodiments, the memory 702 stores the following elements, executable modules or data structures, or a subset of them, or an extended set of them: an operating system 7021 and an application program 7022.

[0318] Among them, the operating system 7021 contains various system programs, such as framework layer, core library layer, driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application program 7022 contains various application programs, such as media player (Media Player), browser (Browser), etc., for implementing various application services. The program for implementing the method of the embodiments of the present application can be contained in the application program 7022.

[0319] In the embodiments of the present application, the program or instruction stored in the memory 702 is invoked, specifically, the program or instruction stored in the application program 7022, wherein the receiver is configured to receive the RRC message from the network entity, and the RRC message includes at least one of the second SRS information and the inactive state SRS configuration information; the second SRS information includes at least one of the second SRS configuration and the carrier aggregation configuration.

[0320] Part or all of the method disclosed in the embodiments of the present application can also be applied to the processor 701, or implemented by the processor 701, or implemented by the processor 701 in cooperation with other elements (such as the transceiver). The processor 701 can be an integrated circuit chip having a signal processing capability. In the implementation process, each step of the above method can be completed by the integrated logic circuit or the instruction in the form of software in the processor 701. The processor 701 described above can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. Each method, step and logic block diagram disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as a hardware code processor for execution, or a combination of hardware and software modules in the code processor for execution. The software module can be located in a random access memory, a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register or other mature storage medium in the art. The storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702 and combines the hardware to complete the steps of the above method.

[0321] It can be understood that the embodiments described in the embodiments of the application can be implemented by hardware, software, firmware, middleware, microcode or a combination thereof. For hardware implementation, the processing unit can be implemented in 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 for performing the functions described in the embodiments of the application, or a combination thereof.

[0322] For software implementation, the technologies described in the embodiments of the application can be implemented by modules (for example, processes, functions, etc.) for performing the functions described in the embodiments of the application. The software code can be stored in a memory and executed by the processor 701. The memory can be implemented in the processor 701 or implemented outside the processor 701.

[0323] In one embodiment, the network entity is a distributed unit (DU), a central unit (CU) or a base station.

[0324] In one embodiment, the RRC message is an RRC reconfiguration message or an RRC release message.

[0325] In one embodiment, the processor is configured to complete the transmission configuration of the SRS signal according to the RRC message.

[0326] In one embodiment, a communication system is provided, including the terminal described above, the central unit (CU) described above and the distributed unit (DU).

[0327] In one embodiment, a computer readable storage medium is provided, and the computer readable storage medium has stored thereon a computer program. The computer program is executed by a processor to implement the steps in the method embodiments described above.

[0328] In one embodiment, a computer program product is provided, and the computer program product includes a computer program. The computer program is executed by a processor to implement the steps in the method embodiments described above.

[0329] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments of each method can be included. Any reference to memory, database or other medium used in each embodiment provided by the present application can include at least one of non-volatile memory and volatile memory. The database involved in each embodiment provided by the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, and the like, but is not limited thereto. The processor involved in each embodiment provided by the present application can be a general processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, and the like, but is not limited thereto.

[0330] Each of the technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of each technical feature in the above-mentioned embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0331] The above-mentioned embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A positioning configuration method applied to a centralized unit (CU), the method comprising: sending a first request message to a distributed unit (DU), the first request message comprising at least one of first SRS information and non-active SRS positioning inquiry indication information; the first SRS information comprising at least one of a first SRS configuration and a bandwidth aggregation request indication; the bandwidth aggregation request indication being used to obtain one or more carrier aggregation configurations; receiving a first response message from the distributed unit (DU), the first response message comprising at least one of second SRS information and non-active SRS configuration information; the second SRS information comprising at least one of a second SRS configuration and the carrier aggregation configuration. 2.The method of claim 1, wherein the carrier aggregation configuration comprises one or more of a serving cell identifier and a BWP identifier. 3.The method of claim 1, wherein the first SRS configuration comprises at least one of an SRS transmission bandwidth, synchronization signal block (SSB) cell number information, and system frame number (SFN) offset configuration; the SSB cell number information being used to indicate an SSB number of a non-cell defined synchronization signal block (NCD-SSB) in a neighbor cell or a serving cell; the SRS transmission bandwidth comprising an SRS transmission bandwidth corresponding to a first frequency range (FR1) or an SRS transmission bandwidth corresponding to a second frequency range (FR2) ; the SFN offset configuration comprising at least one of an offset of SFN and an integer subframe offset. wherein 4.The method of claim 3, wherein the SRS transmission bandwidth corresponding to the first frequency range (FR1) comprises at least one of 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 35MHz, 40MHz, 45MHz, 50MHz, 60MHz, 70MHz, 80MHz, 90MHz, and 100MHz; and the SRS transmission bandwidth corresponding to the second frequency range (FR2) comprises at least one of 50MHz, 100MHz, 200MHz, 400MHz, 800MHz, and 1600MHz. 5.The method of claim 1, wherein the first request message is a positioning information request message; and the first response message is a positioning information response message or a positioning information update message. 6.The method of claim 1, wherein the second SRS configuration comprises at least one of at least one port configuration, at least one repetition factor, at least one SRS resource type configuration, at least one frequency hopping configuration, and at least one extended port configuration. 7.The method of claim 6, wherein the port configuration comprises one of 1-port, 2-port, and 4-port configurations; and the extended port configuration comprises an 8-port configuration, the 8-port configuration being based on non-time division multiplexing (TDM) to map 8 ports to two different subsets respectively, and different subsets being mapped to different symbols. ​ 8.The method of claim 6, wherein the SRS resource type configuration comprises one of the following: aperiodic configuration, semi-periodic configuration, periodic configuration. 9.The method of claim 8, wherein the periodic configuration comprises at least one of a periodicity value, a slot offset, a periodicity configuration of a superframe; the aperiodic configuration comprises a slot offset; the semi-periodic configuration comprises at least one of a periodicity value, a slot offset, a periodicity configuration of a superframe; the periodicity configuration of the superframe is used to indicate whether the positioning SRS transmission time is an even superframe or an odd superframe. 10.The method of claim 8, wherein the repetition factor comprises at least one of a plurality of parameter values; the plurality of parameter values are 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14 respectively; the overlap value comprises 0 RB, 1 RB, 2 RB, and 4 RB; the frequency hopping quantity value ranges from 1 to 6; the frequency hopping comb offset comprises a frequency hopping identity and / or a frequency hopping sub-set; the frequency hopping identity ranges from 0 to 1023, and the frequency hopping sub-set comprises 2-comb transmission, 4-comb transmission, or 8-comb transmission. 11.The method of claim 6, wherein the frequency hopping configuration comprises at least one of an overlap value, a frequency hopping quantity, a frequency hopping comb offset, a SRS transmission duration, a SRS transmission periodicity, a SRS offset, a starting SFN where the SRS is located, a frequency hopping repetition manner, a frequency hopping cyclic shift, a frequency hopping granularity. 12.The method of claim 1, wherein the inactive state SRS configuration information comprises at least one of an inactive state SRS first configuration, an inactive state SRS second configuration; the inactive state SRS first configuration comprises a configuration of SRS on a normal uplink (NUL) carrier, a configuration of SRS on a supplementary uplink (SUL) carrier, a bandwidth part (BWP) configuration of the NUL carrier, a BWP configuration of the SUL carrier, a TA timer in the inactive state, and a change threshold of a reference signal received power (RSRP) in the inactive state; the inactive state SRS second configuration comprises at least one of an inactive state SRS positioning aggregated bandwidth configuration, a SRS positioning frequency hopping configuration, at least one inactive state active area pre-configuration, at least one inactive state active area non-pre-configuration.

13. The method of claim 12, wherein the inactive state SRS positioning aggregated bandwidth configuration comprises at least one of a subcarrier spacing, an SRS carrier frequency; wherein, the SRS carrier frequency represents a carrier frequency of a bandwidth aggregated SRS resource set; the inactive state active area pre-configuration comprises at least one of at least one cell identity, a SRS positioning configuration for the NUL carrier, a SRS positioning configuration for the SUL carrier, a BWP configuration on the NUL carrier, a BWP configuration on the SUL carrier, a TA configuration of an active area. 14.The method of claim 13, wherein the TA configuration of the active area comprises an inactive state SRS positioning active area TA timer, an inactive state SRS positioning active area RSRP change threshold, and indication information representing whether to automatically perform TA adjustment. 15.The method of claim 1, wherein after receiving the first response message from the DU, the method further comprises: sending an interface message to the DU, the interface message comprising an RRC message; wherein the RRC message comprises at least one of the second SRS information, the inactive SRS configuration information; and wherein the interface message is used to instruct the DU to send the RRC message to a terminal, the RRC message being used to instruct the terminal to complete transmission configuration of the SRS signal. 16.The method of claim 15, wherein the RRC message is an RRC reconfiguration message or an RRC release message. 17.A positioning configuration method applied to a DU, the method comprising: receiving a first request message from a CU, the first request message comprising at least one of first SRS information, and inactive SRS positioning inquiry indication information; wherein the first SRS information comprises at least one of a first SRS configuration, and a bandwidth aggregation request indication; and wherein the bandwidth aggregation request indication is used to obtain one or more carrier aggregation configurations; sending a first response message to the CU, the first response message comprising at least one of second SRS information, and inactive SRS configuration information; and wherein the second SRS information comprises at least one of a second SRS configuration, and the carrier aggregation configurations. 18.The method of claim 17, wherein the carrier aggregation configurations comprise one or more of a serving cell identity and a BWP identity. 19.The method of claim 17, wherein the first SRS configuration comprises at least one of an SRS transmission bandwidth, synchronization signal block (SSB) cell number information, and system frame number (SFN) offset configuration; wherein the SSB cell number information is used to indicate an SSB number of a non-cell defined synchronization signal block (NCD-SSB) in a neighbor cell or a serving cell; wherein the SRS transmission bandwidth comprises an SRS transmission bandwidth corresponding to a first frequency range (FR1), or an SRS transmission bandwidth corresponding to a second frequency range (FR2) ; and wherein the SFN offset configuration comprises at least one of an offset of SFN, and an integer subframe offset. 20.The method of claim 19, wherein the SRS transmission bandwidth corresponding to the first frequency range (FR1) comprises at least one of 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, 25MHz, 30MHz, 35MHz, 40MHz, 45MHz, 50MHz, 60MHz, 70MHz, 80MHz, 90MHz, and 100MHz; and wherein the SRS transmission bandwidth corresponding to the second frequency range (FR2) comprises at least one of 50MHz, 100MHz, 200MHz, 400MHz, 800MHz, and 1600MHz. 21.The method of claim 17, wherein the first request message is a positioning information request message; and wherein the first response message is a positioning information response message or a positioning information update message. ​ ​ ​ wherein, ​ ​ ​ 22.The method of claim 17, wherein the second SRS configuration comprises at least one of at least one port configuration, at least one repetition factor, at least one SRS resource type configuration, at least one frequency hopping configuration, at least one extended port configuration. 23.The method of claim 22, wherein the port configuration comprises one of 1-port, 2-port, 4-port configuration; the extended port configuration comprises 8-port configuration, which is based on non-time division multiplexing (TDM) to map 8 ports to two different subsets respectively, and different subsets are mapped to different symbols. 24.The method of claim 22, wherein the SRS resource type configuration comprises one of aperiodic configuration, semi-periodic configuration, periodic configuration. 25.The method of claim 24, wherein the periodic configuration comprises at least one of periodicity value, slot offset, periodicity of hyper frame configuration; the aperiodic configuration comprises slot offset; the semi-periodic configuration comprises at least one of periodicity value, slot offset, periodicity of hyper frame configuration; the periodicity of hyper frame configuration is used to indicate whether the positioning SRS transmission time is even hyper frame or odd hyper frame. 26.The method of claim 24, wherein the repetition factor comprises at least one of a plurality of parameter values; the plurality of parameter values are 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14 respectively; the overlap value comprises 0 RB, 1 RB, 2 RB, and 4 RB; the frequency hopping quantity value range comprises 1-6; the frequency hopping comb offset comprises frequency hopping identification and / or frequency hopping sub-set; the frequency hopping identification range is 0 to 1023, the frequency hopping sub-set comprises 2 comb transmission, 4 comb transmission, or 8 comb transmission. 27.The method of claim 22, wherein the frequency hopping configuration comprises at least one of overlap value, frequency hopping quantity, frequency hopping comb offset, SRS transmission duration, SRS transmission periodicity, SRS offset, SRS located starting SFN, frequency hopping repetition mode, frequency hopping cyclic shift, frequency hopping granularity. 28.The method of claim 17, wherein the inactive state SRS configuration information comprises at least one of inactive state SRS first configuration, inactive state SRS second configuration; the inactive state SRS first configuration comprises SRS configuration on normal uplink (NUL) carrier, SRS configuration on supplementary uplink (SUL) carrier, bandwidth part (BWP) configuration of the NUL carrier, BWP configuration of the SUL carrier, TA timer in inactive state, and reference signal received power (RSRP) change threshold in inactive state; the inactive state SRS second configuration comprises at least one of at least one inactive state SRS positioning aggregated bandwidth configuration, SRS positioning transmission frequency hopping configuration, at least one inactive state active area pre-configuration, at least one inactive state active area non-pre-configuration.

29. The method of claim 28, wherein the inactive state SRS positioning aggregate bandwidth configuration comprises at least one of a subcarrier spacing, an SRS carrier frequency; wherein, the SRS carrier frequency represents carrier frequency of SRS resource set for bandwidth aggregation. The non-active state active area pre-configuration comprises at least one of: at least one cell identity, SRS positioning configuration for the NUL carrier, SRS positioning configuration for the SUL carrier, BWP configuration on the NUL carrier, BWP configuration on the SUL carrier, TA configuration of the active area. 30.The method of claim 29, wherein the TA configuration of the active area comprises at least one of: a non-active state SRS positioning active area TA timer, a non-active state SRS positioning active area RSRP change threshold, and indication information indicating whether to automatically perform TA adjustment. 31.The method of claim 17, wherein after the sending the first response message to the CU, the method further comprises: receiving an interface message from the CU, the interface message comprising an RRC message; the RRC message comprising at least one of: the second SRS information, the non-active state SRS configuration information; sending the RRC message to a terminal, the RRC message being used to instruct the terminal to complete transmission configuration of the SRS signal. 32.The method of claim 31, wherein the RRC message is an RRC reconfiguration message or an RRC release message. 33.An uplink positioning method applied to a terminal, the method comprising: receiving an RRC message from a network entity, the RRC message comprising at least one of: second SRS information, non-active state SRS configuration information; the second SRS information comprising at least one of: second SRS configuration, carrier aggregation configuration. 34.The method of claim 33, wherein the network entity is a DU, a CU or a base station. 35.The method of claim 33, wherein the RRC message is an RRC reconfiguration message or an RRC release message. 36.The method of claim 33, wherein the second SRS configuration comprises at least one of: at least one port configuration, at least one repetition factor, at least one SRS resource type configuration, at least one frequency hopping configuration, at least one extended port configuration. 37.The method of claim 36, wherein the port configuration comprises one of: 1-port, 2-port, 4-port configuration; the extended port configuration comprises 8-port configuration, the 8-port configuration being based on non-time division multiplexing (TDM) to map 8 ports to two different subsets respectively, and different subsets are mapped to different symbols. 38.The method of claim 36, wherein the SRS resource type configuration comprises one of: aperiodic configuration, semi-periodic configuration, periodic configuration. 39.The method of claim 38, wherein the periodic configuration comprises at least one of: periodicity value, slot offset, periodicity configuration of hyper frame; the aperiodic configuration comprises slot offset; the semi-periodic configuration comprises at least one of: periodicity value, slot offset, periodicity configuration of hyper frame; the periodicity configuration of hyper frame is used to indicate whether the hyper frame is even or odd when positioning SRS is transmitted. 40.The method of claim 38, wherein the repetition factor comprises at least one of a plurality of parameter values, the plurality of parameter values are 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, respectively; the number of overlapping values comprise 0 RB, 1 RB, 2 RBs, and 4 RBs; the number of frequency hopping values range from 1 to 6; the frequency hopping comb offset comprises a frequency hopping identity and / or a frequency hopping sub-set; the frequency hopping identity ranges from 0 to 1023, and the frequency hopping sub-set comprises a 2-comb transmission, a 4-comb transmission, or an 8-comb transmission. 41.The method of claim 36, wherein the frequency hopping configuration comprises at least one of a number of overlapping values, a number of frequency hopping, a frequency hopping comb offset, a SRS transmission duration, a SRS transmission periodicity, a SRS offset, a starting SFN where the SRS is located, a frequency hopping repetition manner, a frequency hopping cyclic shift, a frequency hopping granularity. 42.The method of claim 33, wherein the inactive state SRS configuration information comprises at least one of an inactive state SRS first configuration, an inactive state SRS second configuration; the inactive state SRS first configuration comprises a SRS configuration on a normal uplink (NUL) carrier, a SRS configuration on a supplementary uplink (SUL) carrier, a bandwidth part (BWP) configuration of the NUL carrier, a BWP configuration of the SUL carrier, a TA timer in the inactive state, and a RSRP change threshold in the inactive state; the inactive state SRS second configuration comprises at least one of at least one inactive state SRS positioning aggregated bandwidth configuration, a SRS positioning frequency hopping configuration, at least one inactive state active area pre-configuration, and at least one inactive state active area non-pre-configuration. the SRS carrier frequency represents a carrier frequency of a SRS resource set for bandwidth aggregation; the inactive state active area pre-configuration comprises at least one of at least one cell identity, a SRS positioning configuration for the NUL carrier, a SRS positioning configuration for the SUL carrier, a BWP configuration on the NUL carrier, a BWP configuration on the SUL carrier, and a TA configuration of the active area.

43. The method of claim 42, wherein the inactive state SRS positioning aggregate bandwidth configuration comprises at least one of a subcarrier spacing, an SRS carrier frequency; wherein, 44.The method of claim 43, wherein the TA configuration of the active area comprises a SRS positioning active area TA timer in the inactive state, a SRS positioning active area RSRP change threshold in the inactive state, and indication information representing whether to automatically perform TA adjustment. complete the transmission configuration of the SRS signal according to the RRC message. 46.A positioning configuration apparatus applied to a centralized unit (CU), the apparatus comprising: a request message sending module, configured to send a first request message to a distributed unit (DU), the first request message comprising at least one of first SRS information and inactive state SRS positioning inquiry indication information; the first SRS information comprises at least one of a first SRS configuration and a bandwidth aggregation request indication; the bandwidth aggregation request indication is used to acquire one or more carrier aggregation configurations.

45. The method of claim 33, wherein the method further comprises: ​ ​ ​ The response message receiving module is configured to receive a first response message from the DU, wherein the first response message comprises at least one of second SRS information and non-active SRS configuration information, and the second SRS information comprises at least one of a second SRS configuration and the carrier aggregation configuration.

47. A positioning configuration apparatus applied to a DU, comprising: The request message receiving module is configured to receive a first request message from the CU, wherein the first request message comprises at least one of first SRS information and non-active SRS positioning inquiry indication information, the first SRS information comprises at least one of a first SRS configuration and a bandwidth aggregation request indication, and the bandwidth aggregation request indication is used to acquire one or more carrier aggregation configurations. The response message sending module is configured to send a first response message to the CU, wherein the first response message comprises at least one of second SRS information and non-active SRS configuration information, and the second SRS information comprises at least one of a second SRS configuration and the carrier aggregation configuration.

48. An uplink positioning apparatus applied to a terminal, comprising: The configuration message receiving module is configured to receive an RRC message from a network entity, wherein the RRC message comprises at least one of second SRS information and non-active SRS configuration information, and the second SRS information comprises at least one of a second SRS configuration and a carrier aggregation configuration. The second SRS information comprises at least one of a second SRS configuration and a carrier aggregation configuration.

49. A CU, comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the method in any one of claims 1 to 16.

50. A DU, comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the method in any one of claims 17 to 32.

51. A terminal, comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the method in any one of claims 33 to 45.

52. A communication system, comprising the CU in claim 49, the DU in claim 50, and the terminal in claim 51.

53. A computer-readable storage medium, having a computer program stored thereon, wherein the computer program is executed by a processor to implement the steps of the method in any one of claims 1 to 45.

54. A computer program product, comprising a computer program, wherein the computer program is executed by a processor to implement the steps of the method in any one of claims 1 to 45.

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