Positioning reference signal port differentiation method, apparatus, and communication device

Abstract

The application discloses a positioning reference signal port distinguishing method, device and communication equipment, and belongs to the technical field of wireless communication. The positioning reference signal port distinguishing method of the embodiment of the application comprises the following steps: a communication node distinguishes a plurality of positioning reference signal ports by adopting at least one of the following distinguishing manners: a first distinguishing manner based on cyclic shift; a second distinguishing manner based on a frequency domain orthogonal code; a third distinguishing manner based on resource element (RE) offset; a fourth distinguishing manner based on an orthogonal frequency division multiplexing (OFDM) symbol position; and a fifth distinguishing manner based on a positioning reference signal generation sequence.

Description

Technical Field

[0001] This application belongs to the field of wireless communication technology, specifically relating to a method, apparatus, and communication equipment for distinguishing positioning reference signal ports. Background Technology

[0002] Current communication protocols only support single-port positioning reference signals, resulting in insufficient positioning accuracy. Artificial Intelligence (AI) positioning requires measuring positioning reference signals from multiple ports, as this improves accuracy. In sidelink positioning, the terminal may have distributed antennas, which may correspond to different ports or port groups. In Angle of Departure (AOD) positioning scenarios, multi-port positioning reference signals can accurately yield the AOD through phase calculation. Therefore, future positioning schemes based on positioning reference signals require the design of multi-port positioning reference signals. When using multiple ports to transmit positioning reference signals, distinguishing between these ports is a problem that needs to be solved. Summary of the Invention

[0003] This application provides a method, apparatus, and communication device for distinguishing positioning reference signal ports, which can solve the problem of how to distinguish multiple positioning reference signal ports.

[0004] Firstly, a method for distinguishing location reference signal ports is provided, including:

[0005] Communication nodes distinguish multiple positioning reference signal ports using at least one of the following methods:

[0006] The first differentiation method based on cyclic shift;

[0007] A second differentiation method based on frequency domain orthogonal codes;

[0008] A third differentiation method based on resource unit (RE) offset;

[0009] A fourth differentiation method based on the symbol position of Orthogonal Frequency Division Multiplexing (OFDM);

[0010] The fifth differentiation method is based on generating sequences using positioning reference signals.

[0011] Secondly, a device for distinguishing positioning reference signal ports is provided, comprising:

[0012] The differentiation module is used to differentiate multiple positioning reference signal ports using at least one of the following differentiation methods:

[0013] The first differentiation method based on cyclic shift;

[0014] A second differentiation method based on frequency domain orthogonal codes;

[0015] A third differentiation method based on resource unit (RE) offset;

[0016] A fourth differentiation method based on the symbol position of Orthogonal Frequency Division Multiplexing (OFDM);

[0017] The fifth differentiation method is based on generating sequences using positioning reference signals.

[0018] Thirdly, a communication device is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0019] Fourthly, a communication device is provided, including a processor and a communication interface, wherein the processor is configured to distinguish a plurality of positioning reference signal ports using at least one of the following distinguishing methods:

[0020] The first differentiation method based on cyclic shift;

[0021] A second differentiation method based on frequency domain orthogonal codes;

[0022] A third differentiation method based on resource unit (RE) offset;

[0023] A fourth differentiation method based on the symbol position of Orthogonal Frequency Division Multiplexing (OFDM);

[0024] The fifth differentiation method is based on generating sequences using positioning reference signals.

[0025] Fifthly, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect.

[0026] In a sixth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being used to run programs or instructions to implement the method as described in the first aspect.

[0027] In a seventh aspect, a computer program / program product is provided, the computer program / program product being stored in a storage medium, the computer program / program product being executed by at least one processor to perform the steps of the method as described in the first aspect.

[0028] In this embodiment of the application, a method for distinguishing positioning reference signal ports is specified, which can distinguish multiple positioning reference signal ports of the transmitting node, thereby accurately sending or receiving signals from multiple positioning reference signal ports. Furthermore, multiple positioning reference signal ports can be measured and other operations can be performed to improve positioning accuracy. Attached Figure Description

[0029] Figure 1 This is a block diagram of a wireless communication system applicable to embodiments of this application;

[0030] Figure 2 A schematic diagram of typical PRS graphics under different comb structures;

[0031] Figure 3 This is a flowchart illustrating the positioning reference signal port differentiation method in the embodiments of this application;

[0032] Figure 4 This is a schematic diagram of the positioning reference signal port differentiation device in the embodiments of this application;

[0033] Figure 5 This is a schematic diagram of the communication device in the embodiments of this application;

[0034] Figure 6 This is a schematic diagram of the hardware structure of the terminal in the embodiments of this application;

[0035] Figure 7 This is a schematic diagram of the hardware structure of the network-side device in an embodiment of this application. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0037] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0038] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and NR terminology is used in most of the following description; however, these technologies can also be applied to applications beyond NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0039] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. Terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the specific type of terminal 11 is not limited in this embodiment. Network-side equipment 12 may include access network equipment or core network equipment. Access network equipment 12 may also be referred to as radio access network equipment, radio access network (RAN), radio access network function, or radio access network unit. Access network equipment 12 may include base stations, WLAN access points, or WiFi nodes, etc. Base stations may be referred to as Node B, evolved Node B (eNB), access point, base transceiver station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B node, home evolved B node, Transmitting Receiving Point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only a base station in an NR system is used as an example for description, and the specific type of base station is not limited.Core network equipment may include, but is not limited to, at least one of the following: core network node, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), Binding Support Function (BSF), and Application Function. Function (AF), etc. It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment.

[0040] The following is a brief introduction to the communication terms related to this application.

[0041] (1) Progress in New Radio (NR) positioning standardization

[0042] NR has redesigned the downlink positioning reference signal NR DL PRS based on the NR system, including the following:

[0043] 1) In the current protocol, the positioning reference signal only supports a single port.

[0044] 2) The Positioning Reference Signal (PRS) can come from multiple Transmission Reception Points (TRPs), which can originate from the serving cell or non-serving cells. The UE measures the PRS of multiple TRPs and then performs positioning measurement reporting or positioning calculation.

[0045] 3) PRS supports transmission up to 100 Mbps in FR1 and up to 400 Mbps in FR2. NR PRS bandwidth configuration is independent of the Bandwidth Part (BWP) configuration. When the PRS bandwidth is greater than the BWP bandwidth, the User Equipment (UE) is supported in using the Measurement Gap to measure the PRS.

[0046] 4) PRS supports beamforming, thus introducing the concept of PRS resources. A PRS resource ID can correspond to one beam in a TRP. One or more PRS resources can form a PRS resource set, or a PRS resource set can contain one or more PRS resources. A TRP can contain one or more PRS resources. Furthermore, to improve UE audibility, PRS beam scanning and PRS beam repetition are supported. Additionally, PRS reference neighbor signals (RS) are supported as quasi-co-location (QCL) reference signals.

[0047] 5) PRS supports interleaved patterns and flexible pattern configuration. The PRS resource combo structure can support {2, 4, 6, 12}; the symbol count can support {2, 4, 6, 12}. The currently supported combinations of symbol count and combo size are shown in Table 1.

[0048] Table 1

[0049] 2 symbols 4 symbols 6 symbols 12 symbols Comb-2 {0,1} {0,1,0,1} {0,1,0,1,0,1} {0,1,0,1,0,1,0,1,0,1,0,1} Comb-4 NA {0,2,1,3} NA {0,2,1,3,0,2,1,3,0,2,1,3}} Comb-6 NA NA {0,3,1,4,2,5} {0,3,1,4,2,5,0,3,1,4,2,5} Comb-12 NA NA NA {0,6,3,9,1,7,4,10,2,8,5,11}

[0050] Typical PRS patterns under different comb structures are as follows: Figure 2 As shown.

[0051] (2) PRS port

[0052] Long Term Evolution (LTE) only supports single-port PRS transmission. NR Rel-16 discussed whether to support single-port and two-port PRS transmission. However, since two-port PRS would introduce more resource overhead and there was insufficient justification, Rel-16 ultimately only approved support for single-port PRS.

[0053] (3) PRS sequence

[0054] The UE should assume that the reference signal sequence r(m) is defined as:

[0055]

[0056] The pseudo-random sequence c(i) is defined in Section 5.2.1. The pseudo-random sequence generator should be initialized as follows:

[0057]

[0058] in, The timeslot number is the downlink PRS sequence ID. It is given by the higher-level parameter dl-PRS-SequenceID, where l is the OFDM symbol in the time slot to which the sequence is mapped.

[0059] The PRS sequence is obtained by modulating a Gold sequence using Quadrature Phase Shift Keying (QPSK). The initialization function for the Gold sequence is c. init Its design requires distinguishing the PRS of each TRP, maintaining the randomization of interference between the DL PRS of each TRP and good sequence cross-correlation characteristics.

[0060] (4) PRS mapping

[0061] For each configured downlink PRS resource, the UE should assume that the sequence r(m) is factored by β. PRS Scale and map to resource units (k,l) according to the following equation. p,μ :

[0062]

[0063] m = 0, 1, ...

[0064]

[0065]

[0066] When the following conditions are met:

[0067] Resource unit (k,l)p,μ Located within the resource block occupied by the downlink PRS resources configured for the UE;

[0068] Symbol l is not used by any synchronization signal / physical broadcast channel block (SS / PBCH) block of downlink PRS transmitted from the same serving cell by the serving cell or by any SS / PBCH block of a non-serving cell. Its time-frequency position is provided by a higher layer to the UE for transmission of downlink PRS from the same non-serving cell.

[0069] The timeslot number satisfies condition 7.4.1.7.4 in clause 7.4.

[0070] (5) Design of Multi-Port Channel State Information Reference Signal (CSI-RS)

[0071] CSI-RS with multiple ports can be divided into different Code Domain Multiplexing (CDM) groups, where the time-frequency positions of CSI-RS in different CDM groups can be different. A CDM group occupies contiguous resource element (RE) positions in the time and / or frequency domains, and different ports in a CDM group are distinguished by frequency domain orthogonal codes (FD-OCC) and / or time domain orthogonal codes (TD-OCC), occupying the same time and frequency domain positions. Please refer to Table 2.

[0072] Table 2

[0073]

[0074] (6) CSI-RS sequence design

[0075] The UE should assume that the reference signal sequence r(m) is defined as:

[0076]

[0077] The pseudo-random sequence c(i) is defined in Section 5.2.1. The pseudo-random sequence generator should be initialized as follows:

[0078]

[0079] At the beginning of each OFDM symbol, where It is the slot number within the radio frame, and the OFDM symbol number within the slot, which is equal to the higher-layer parameter scrapblingID or sequenceGenerationConfig.

[0080] (7) CSI-RS mapping

[0081] For each configured CSI-RS, the UE should assume that the sequence r(m) is mapped to resource element (k,l). p,μ ,according to:

[0082]

[0083]

[0084]

[0085]

[0086]

[0087] n = 0, 1, ...

[0088] When the following conditions are met:

[0089] Resource unit (k,l) p,μ Within the resource block occupied by the CSI-RS resources configured in the UE, the reference point with k=0 is subcarrier 0 in common resource block 0. The value of ρ is given by the higher-layer parameters in the CSI-RS-ResourceMapping IE or CSI-RS-CellMobility IE, and the number of ports X is given by the higher-layer parameter nrofPorts.

[0090] The multi-port positioning reference signal measurement method, apparatus, and communication equipment provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0091] Please refer to Figure 3 This application provides a method for distinguishing positioning reference signal ports, including:

[0092] Step 31: The communication node distinguishes multiple positioning reference signal ports using at least one of the following methods:

[0093] The first distinction method is based on cyclic shift;

[0094] A second differentiation method based on frequency domain orthogonal codes;

[0095] A third differentiation method based on resource element (RE) offset;

[0096] A fourth differentiation method based on the symbol position of Orthogonal Frequency Division Multiplexing (OFDM);

[0097] The fifth differentiation method is based on generating sequences using positioning reference signals.

[0098] In the embodiments of this application, a method for distinguishing positioning reference signal ports is specified, which can distinguish multiple positioning reference signals of the transmitting node, thereby enabling operations such as measurement of multiple positioning reference signal ports and improving positioning accuracy.

[0099] In this embodiment, the communication node can be either a transmitting node or a receiving node for the positioning reference signal. Optionally, the transmitting node may include, but is not limited to: a TRP, a base station, a UE, a Road Test Unit (RSU) in a sidelink, a base station in the sidelink, and / or a UE in the sidelink. Optionally, the receiving node may include, but is not limited to: a UE, a TRP, an RSU in the sidelink, a base station in the sidelink, and / or a UE in the sidelink. For example, in positioning based on the UU interface, the downlink transmitting node is the TRP or a base station, and the receiving node is the UE; in uplink positioning, the transmitting node is the UE, and the receiving node is the TRP or a base station. In positioning based on the PC5 interface, the transmitting node is a Sidelink UE, and the receiving node is another Sidelink UE; or, the transmitting node is an RSU or a UE, and the receiving node is a UE or an RSU.

[0100] In this embodiment of the application, the transmitting node includes multiple positioning reference signal ports, and can transmit positioning reference signals to the receiving node through these multiple positioning reference signal ports.

[0101] In this embodiment of the application, the positioning reference signal may optionally include, but is not limited to: PRS, Sounding Reference Signal (SRS), CSI-RS, Demodulation Reference Signal (DMRS), Synchronization Signal and PBCH block (SSB), and / or, Sidelink PRS (SL-PRS), etc., as reference signals used for RAT-dependent / independent or sidelink positioning.

[0102] The following sections will explain each of the above distinction methods.

[0103] I. Differentiating by cyclic shifting

[0104] Distinguishing by cyclic shifting is a method of distinguishing code division multiplexing (CDM).

[0105] In this embodiment of the application, optionally, the cyclic shift corresponding to the positioning reference signal port is related to at least one of the following parameters:

[0106] Maximum cyclic shift;

[0107] Initial circular shift;

[0108] Comb size;

[0109] Relative RE offset;

[0110] Number of reference signal resource symbols for positioning;

[0111] Location reference signal resource symbol index;

[0112] Orthogonal Cover Code (OCC).

[0113] In this embodiment of the application, optionally, the parameters related to the cyclic shift corresponding to the positioning reference signal port and / or the values ​​of the related parameters are determined according to at least one of the following methods: protocol agreement, other node indication, and the selection of the communication node.

[0114] In this embodiment of the application, optionally, if the first differentiation method is used to differentiate multiple positioning reference signal ports, different positioning reference signal ports correspond to different cyclic shifts and are mapped to the corresponding time-frequency positions.

[0115] In this embodiment of the application, optionally, the different positioning reference signal ports are different positioning reference signal ports of the transmitting node, or different positioning reference signal ports within a positioning reference signal group, or different positioning reference signal ports within a CDM port group.

[0116] In this embodiment of the application, optionally, the communication node distinguishes multiple positioning reference signal ports of the transmitting node through cyclic shifting. Prior to this, the method further includes: the communication node determining the correspondence between the positioning reference signal ports and the cyclic shifting based on at least one of the following: protocol agreement, indications from other nodes, and selection by the communication node itself. Optionally, the correspondence between the positioning reference signal ports and the cyclic shifting can be, for example, a correspondence between the positioning reference signal port index and the cyclic shifting.

[0117] The following example illustrates how to distinguish and locate reference signal ports using cyclic shifting.

[0118] Implementation method 1 of sequence mapping associated by cyclic shift: The mapping of cyclic shift is independent of the relative RE offset and / or the positioning reference signal symbol index.

[0119] For each configured downlink PRS resource, the UE should assume that the sequence r(m) is factored by β. PRS Scale and map to resource units (k,l) p,μ ,according to:

[0120]

[0121] m = 0, 1, ...

[0122]

[0123]

[0124]

[0125]

[0126] When the following conditions are met:

[0127] Resource unit (k,l) p,μ Within the resource block occupied by the downlink PRS resources configured in the UE;

[0128] Symbol l indicates any SS / PBCH block not used by the serving cell that is used for downlink PRS transmitted from the same serving cell or any SS / PBCH block from a non-serving cell, the time-frequency position of which is provided to the UE by a higher layer;

[0129] The timeslot number satisfies the conditions in clause 7.4.1.7.4.

[0130] That is: For each downlink PRS resource configured, the UE shall assume thesequence r(m)is scaled with a factorβ PRS and mapped to resources elements(k,l) p,μ According to

[0131]

[0132] m = 0, 1, ...

[0133]

[0134]

[0135]

[0136]

[0137] when the following conditions are fulfilled:

[0138] -the resource element(k,l) p,μ is within the resource blocks occupied by the downlink PRS resource for which the UE is configured;

[0139] -the symbol l is not used by any SS / PBCH block used by a serving cell for downlink PRS transmitted from the same serving cell or any SS / PBCH block from a non-serving cell whose time frequency location is provided to the UEby higher layers for downlink PRS transmitted from the same non-serving cell;

[0140] -the slot number satisfies the conditions in clause 7.4.1.7.4.

[0141] The meanings of each parameter are as follows:

[0142] p represents the PRS port index. N represents the number of PRS ports (or p represents the PRS port index within the PRS port group or CDM port group). N is the number of PRS ports within the PRS port group or the CDM port group.

[0143] m is the sequence number itself;

[0144] n cs,p This is the cyclic shift value corresponding to port p, and its size can be 0, 1, 2...n. cs,max-1; Optionally, the cyclic shift value corresponding to port p can be obtained through a formula agreed upon in the protocol (the above formula is an example, and other methods are not limited to) or it can be obtained by indication from other nodes;

[0145] The maximum cyclic shift value can be obtained through protocol agreement (e.g., in this embodiment, multiple PRS ports share the maximum cyclic shift value equally) or through indication from other nodes (e.g., the cyclic shift value corresponding to the target port is indicated by other nodes).

[0146] α p Corresponding to port p, cyclic shift deflection This indicates the phase of the cyclic shift corresponding to the PRS port p mapping;

[0147] n cs,max This represents the maximum number of cyclic shifts.

[0148] n cs Initial circular shift (optional, can be omitted);

[0149] k′ is the relative RE offset of the RE of PRS (resource) symbol l relative to the first symbol;

[0150] The RE offset for the first symbol of the PRS (resource);

[0151] The comb structure size of the PRS (resources), i.e., the frequency domain density;

[0152] L PRS The number of PRS (resource) symbols;

[0153] This is the starting symbol for PRS (Resources).

[0154] Implementation method two for sequence mapping associated with cyclic shifts: The mapping of cyclic shifts is related to the relative RE offset and / or the symbol index of the positioning reference signal (i.e., related to the staggered pattern). That is, different symbol positioning reference signals need to be further multiplied with the corresponding phase during mapping.

[0155] Sub-implementation 1

[0156] For each configured downlink PRS resource, the UE should assume that the sequence r(m) is factored by β. PRS Scale and map to resource units (k,l) p,μ ,according to:

[0157]

[0158] or

[0159]

[0160] or

[0161]

[0162] Tn = 0, 1, ...

[0163]

[0164]

[0165]

[0166]

[0167] Where, n cs,p This is an optional value, meaning that the cyclic shift value corresponding to port p can be obtained through a formula agreed upon in the protocol (the above formula is just an example, and other methods are not limited to) or it can be obtained by instructions from other nodes.

[0168] Sub-implementation 2: Based on implementation 1, a symbol-level phase transition function is further introduced. This relates to the PRS symbol index. Here, l′ is the group number of the PRS symbol, ranging from [0, 1, ..., L]. PRS -1],L PRS The number of PRS symbols; It is a phase-jump sequence with the same length as the number of PRS symbols.

[0169] One way to represent a phase transition sequence is by generating it using a Computer Generate Sequence (CGS) sequence.

[0170] Optionally, the CGS sequence is related to at least one of the following parameters: sequence type (e.g., low-PAPR sequence generation type 1 or 2), sequence length M, and sequence group number u. These parameters can be determined by at least one of the following methods: protocol agreement, indication from other nodes, or selection by the PRS sending or receiving node.

[0171] Optionally, the CGS sequence parameters can be related to the PRS port. For example, different ports can correspond to different sequence group numbers u.

[0172] Optionally, the CGS sequence length can generally be 6, 12, 18, or 24, but the number of PRS symbols generally does not exceed the number of symbols in one slot, so the CGS sequence length should be 6 or 12 here.

[0173] Optionally, the sequence length may not exceed the number of PRS symbols.

[0174] (Phase-jump sequences) are generated by CGS in at least one of the following ways:

[0175] The number of PRS symbols is less than or equal to the CGS sequence length, and includes at least one of the following options:

[0176] Option 1: Take consecutive L from the CGS sequence PRS Bit mapping. Includes: taking the first L bits of the CGS sequence. PRS Bit mapping; or, taking the last L of the CGS sequence. PRS Bit mapping; or, taking consecutive L bits from the CGS sequence. PRS Bit mapping, and instructing the UE to continuously L PRS The start or end position of a bit.

[0177] Option 2: Extract K consecutive bit mappings from the CGS sequence, where K equals the comb size of the PRS or the number of symbols corresponding to a non-repeating pattern in the PRS pattern. This includes: extracting the first K bit mappings from the CGS sequence; or extracting the last K bit mappings from the CGS sequence; or extracting K consecutive bit mappings from the CGS sequence and indicating the start or end position of the K consecutive bits for the UE. Further, repeat the extracted sequence of length K.

[0178] The number of PRS symbols is greater than the CGS sequence length, and includes at least one of the following options:

[0179] Option 1: Map the entire CGS sequence, repeating the first few characters of the remaining symbols until the length L is satisfied. PRS .

[0180] Option 2: The CGS sequence length is greater than or equal to K, where K equals the PRS comb size or the number of symbols corresponding to non-repeating patterns in the PRS pattern. Take K consecutive bit mappings from the CGS sequence. This includes: taking the first K bit mappings from the CGS sequence; or, taking the last K bit mappings from the CGS sequence; or, taking K consecutive bit mappings from the CGS sequence and indicating the start or end position of the K consecutive bits for the UE. Further, repeat the obtained sequence of length K.

[0181] Option 3: The CGS sequence length is less than K, where K is equal to the PRS comb size or the number of symbols corresponding to the non-repeating pattern in the PRS pattern. Map all CGS sequences, repeating the first few characters of the remaining symbols until the length meets K. Further, repeat the sequences of length K.

[0182] Another way to represent (phase-jump sequence) is as follows: time-domain orthogonal code (OCC) sequence, which is multiplied by the time-domain OCC sequence during sequence mapping. The sequence length is the same as the number of PRS resource symbols. Optionally, the time-domain OCC sequence is [1,-1,1,-1,1,-1...].

[0183] Optionally, the time-domain OCC sequence can be related to the PRS port. For example, different ports can correspond to different time-domain OCC sequences.

[0184] One implementation is as follows: For each configured downlink PRS resource, the UE should assume that the sequence r(m) is factored by β. PRS Scale and map to resource units (k,l) p,μ ,according to:

[0185]

[0186] m = 0, 1, ...

[0187]

[0188] w t (m) = [1, -1, 1, -1...]

[0189]

[0190]

[0191]

[0192]

[0193] Among them, w t (m) is not limited to other OCC sequences, l′ is the group index of the PRS symbol, n cs,p This is an optional value.

[0194] In this embodiment of the application, the choice between the above-described implementation method one and implementation method two can be obtained by at least one method, such as instruction from other nodes, agreement of protocols, or selection by the communication node.

[0195] II. Distinguishing by frequency domain orthogonal codes

[0196] In this embodiment of the application, optionally, if the second differentiation method is used to differentiate multiple positioning reference signal ports, different positioning reference signal ports correspond to different frequency domain orthogonal codes. Optionally, differentiation by certain specific types of frequency domain orthogonal codes (such as [1,1,1,1...], [1,-1,1,-1...]) is equivalent to differentiation by cyclic shifting.

[0197] In this embodiment of the application, optionally, the frequency domain orthogonal code is determined by at least one of the following methods: protocol agreement, indication by other nodes, and selection of the communication node.

[0198] In this embodiment of the application, optionally, the communication node communicates multiple positioning reference signal ports of the frequency domain orthogonal code, including: the communication node determining the correspondence between the positioning reference signal port (or the positioning reference signal port within the positioning reference signal port group, or the positioning reference signal port within the CDM port group) and the frequency domain orthogonal code according to at least one of the following: protocol agreement, indication from other nodes, and selection by the communication node. Optionally, the correspondence between the positioning reference signal port and the frequency domain orthogonal code can be the correspondence between the positioning reference signal port index and the frequency domain orthogonal code.

[0199] One implementation method that distinguishes between frequency domain orthogonal codes is as follows:

[0200] For each configured downlink PRS resource, the UE should assume that the sequence r(m) is factored by β. PRS Scale and map to resource units (k,l) p,μ ,according to:

[0201]

[0202] w f (m)=[1,1,1,...1..]or[1,-1,1,-1,...1,-1..]

[0203] m = 0, 1, ...

[0204]

[0205]

[0206] When the following conditions are met:

[0207] Resource unit (k,l) p,μ Within the resource block occupied by the downlink PRS resources configured in the UE;

[0208] Symbol l indicates any SS / PBCH block not used by the serving cell that is used for downlink PRS transmitted from the same serving cell or any SS / PBCH block from a non-serving cell, the time-frequency position of which is provided to the UE by a higher layer;

[0209] The timeslot number satisfies the conditions in clause 7.4.1.7.4.

[0210] That is, for each configured downlink PRS resource, the UE shall assume that the sequence r(m) is scaled with a factor β PRS and mapped to resource elements (k, l) p,μ according to

[0211]

[0212] w f (m) = [1, 1, 1,...1..] or [1, -1, 1, -1,...1, -1..]

[0213] m = 0, 1,...

[0214]

[0215]

[0216] when the following conditions are fulfilled:

[0217] - the resource element (k, l) p,μ is within the resource blocks occupied by the downlink PRS resource for which the UE is configured;

[0218] - the symbol l is not used by any SS / PBCH block used by a serving cell for downlink PRS transmitted from the same serving cell or any SS / PBCH block from a non - serving cell whose time - frequency location is provided to the UE by higher layers for downlink PRS transmitted from the same non - serving cell;

[0219] -the slot number satisfies the conditions in clause 7.4.1.7.4.

[0220] The above w f (m) represents the frequency domain OCC code, which is not limited to other OCC sequences. Optionally, OCC code 0 is [1,1,1,1...]; OCC code 1 is [1,-1,1,-1...]. The OCC code length is equal to the length of the PRS sequence. Optionally, different OCC codes correspond to specific PRS ports.

[0221] III. Differentiating by RE offset

[0222] In this embodiment of the application, optionally, if the third differentiation method is used to differentiate multiple positioning reference signal ports, different positioning reference signal ports or positioning reference signal port groups or CDM port groups are mapped to different RE offsets respectively.

[0223] In this embodiment of the application, optionally, the RE offset is the starting RE position in the frequency domain of the first symbol of the positioning reference signal.

[0224] In this embodiment of the application, optionally, the communication node distinguishes multiple positioning reference signal ports of the transmitting node by RE offset, and further includes: the communication node determining the correspondence between the positioning reference signal port or positioning reference signal port group or CDM port group and the RE offset according to at least one of the first rule agreed upon by the protocol, the first indication information sent by other nodes, and the communication node selection.

[0225] In some embodiments of this application, optionally, the RE offset is the RE offset within the same Physical Resource Block (PRB).

[0226] Using methods indicated by other nodes:

[0227] In this embodiment of the application, optionally, the RE offset indicated in the first indication information is the RE offset of the location reference signal port, the location reference signal port group, or the CDM port group; that is, the RE offset is no longer defined in the current protocol (representing the starting RE offset of the first symbol of the location reference signal (resource)), and the positioning of the RE offset in the existing protocol has been modified. For example: RE offset It can be configured per port (or location reference signal port group, CDM port group) (or per resource per port configuration, or per resource per location reference signal port group configuration, or per resource per CDM port group configuration).

[0228] Alternatively, the first indication information indicates: RE offset and port RE offset, where the port RE offset is the offset value of the location reference signal port, location reference signal port group, or CDM port group relative to the RE offset. That is, the RE offset maintains the current protocol definition, representing the starting RE offset of the first symbol of the location reference signal (resource).

[0229] Optionally, the size of the port RE offset is in, The size is that of a comb-like structure.

[0230] For example, in addition to indicating the RE offset, it further indicates the offset of the port positioning reference signal port level (or the positioning reference signal port group, CDM port group level). When configuring comb-4, the port RE offset of port 0 is 0, and the port RE offset of port 1 is 1; then, the starting RE position of port 0 can remain the same as the RE offset, while the starting RE position of port 1 is further offset by 1 RE based on the indicated RE offset.

[0231] As agreed upon in the agreement:

[0232] In this embodiment of the application, optionally, the first rule agreed upon by the protocol includes: multiple positioning reference signal ports or positioning reference signal port groups or CDM port groups are distributed at equal intervals or adjacently on resource units within the comb structure.

[0233] For example, in a cluster distribution of 6, if it is necessary to distinguish between 2 positioning reference signal ports, the REs occupied by the 2 positioning reference signal ports can be RE0 and RE1; if it is necessary to distinguish between 3 positioning reference signal ports, the REs occupied by the 3 positioning reference signal ports can be RE0, 1, and 2.

[0234] For example, if Comb is 6, and it is necessary to distinguish between 2 positioning reference signal ports, the REs occupied by the 2 positioning reference signal ports can be RE 0 and RE 2; if it is necessary to distinguish between 3 positioning reference signal ports, the REs occupied by the 3 positioning reference signal ports can be 0, 2, and 4.

[0235] For example, the comb size indicated by the network is RE offset is The number of PRS ports (or PRS port groups, or CDM port groups) that need to be distinguished by RE offset is M, and the index is x. M is less than or equal to

[0236] The RE position corresponding to index 0 is

[0237] The RE position corresponding to index 1 is

[0238] The RE position corresponding to index x is

[0239] For example, the comb size indicated by the network is... RE offset is The number of PRS ports (or PRS port groups, or CDM port groups) that need to be distinguished by RE offset is M, the index is x, and the interval between adjacent ports is D. M is less than or equal to Optionally, the adjacent port interval D can be determined by at least one method, such as protocol agreement, indication from other nodes, or selection by the PRS sender or receiver. Optionally, D defaults to 1.

[0240] The RE position corresponding to index 0 is

[0241] The RE position corresponding to index 1 is

[0242] The RE position corresponding to index x is

[0243] Optionally, multiple positioning reference signal ports, or groups of positioning reference signal ports, or groups of CDM ports are equally spaced and distributed on resource units within the comb structure, including: multiple positioning reference signal ports, or groups of positioning reference signal ports, or groups of CDM ports are equally spaced and evenly distributed on resource units within the comb structure.

[0244] For example, if Comb is 6, and it is necessary to distinguish between 2 positioning reference signal ports, the REs occupied by the 2 positioning reference signal ports can be RE 0 and RE 3; if it is necessary to distinguish between 3 positioning reference signal ports, the REs occupied by the 3 positioning reference signal ports can be 0, 2, and 4.

[0245] For example, the comb size indicated by the network is... RE offset is The number of PRS ports (or PRS port groups, or CDM port groups) that need to be distinguished by RE offset is M. M is less than or equal to... Index x can represent the PRS port index (or the PRS port group index, or the CDM port group index).

[0246] The RE position corresponding to index 0 is

[0247] The RE position corresponding to index 1 is

[0248] The RE position corresponding to index x is

[0249] In some other embodiments of this application, optionally, different RE offsets are different RE offsets within different PRBs.

[0250] Furthermore, it is also necessary to indicate or specify the PRB location associated with each positioning reference signal port.

[0251] Method 1: A certain positioning reference signal port can occupy non-contiguous, equally spaced PRBs.

[0252] The PRB location can be indicated by at least one of the following methods:

[0253] 1) PRB offset. This represents the PRB offset of a positioning reference signal port (or a group of positioning reference signal ports, or a CDM port group) relative to the starting PRB. Its magnitude is related to the PRB density. For example, if the PRB density is 2 and PRB offset = 0, it means the starting point of the PRB occupied by the corresponding PRS port is the same as the starting PRB; if PRB offset = 1, it means the starting point of the PRB occupied by the corresponding PRS port is offset by 1 PRB from the starting PRB. Different positioning reference signal ports can be distinguished by their PRB offset.

[0254] 2) PRB density. This indicates the number of PRBs occupied by one positioning reference signal port (or a group of positioning reference signal ports or a group of CDM ports) that appear at equal intervals. For example, if the density is 2, then the positioning reference signal port occupies one PRB in every two PRBs.

[0255] 3) Comb size. For example, comb-24, comb-48, the number of combs divided by 12 and rounded up, is equivalent to PRB density.

[0256] 4) Start PRB. Start PRB indicates one of the following: the starting position of the total positioning reference signal bandwidth; or the starting position of the positioning reference signal bandwidth for a specific positioning reference signal port (or group of positioning reference signal ports, or CDM port group). Optionally, it can be configured per positioning reference signal port (or group of positioning reference signal ports, or CDM port group). Different ports can be distinguished by Start PRB.

[0257] 5) Total bandwidth of positioning reference signals. The total number of PRBs occupied by multiple positioning reference signal ports.

[0258] 6) Bandwidth occupied by the positioning reference signal of one positioning reference signal port. Number of PRBs occupied by one positioning reference signal port.

[0259] 7) RE offset. Indicates the position of the RE within the PRB.

[0260] 8) Comb offset: This represents the RE offset within the combo, with a size ranging from 0 to combo size - 1. For example, in combo-24, the comb-offset ranges from 0 to 23, indicating which of the 24 REs the RE starts from. A comb-offset of 0 to 11 indicates that the RE starts in the PRB containing the start PRB; a comb-offset of 12 to 23 indicates that the RE starts in the PRB following the start PRB.

[0261] Method 2: A Port can occupy consecutive PRBs.

[0262] The PRB location can be indicated by at least one of the following methods:

[0263] 1) PRB offset. This represents the PRB offset of the positioning reference signal relative to the start PRB for a given positioning reference signal port (or group of positioning reference signal ports or CDM port group).

[0264] 2) Start PRB. This indicates one of the following: the starting position of the PRS (total) bandwidth; or the starting position of the positioning reference signal bandwidth for a specific positioning reference signal port (or positioning reference signal port group or CDM port group). Optionally, it can be configured per positioning reference signal port (or positioning reference signal port group, or CDM port group). Different positioning reference signal ports can be distinguished using Start PRB.

[0265] 3) Total PRS Bandwidth. The total number of PRBs occupied by multiple positioning reference signal ports.

[0266] 4) Bandwidth occupied by the PRS of one positioning reference signal port. Number of PRBs occupied by one positioning reference signal port.

[0267] 5) RE offset. Indicates the position of the RE within the PRB.

[0268] In some embodiments of this application, optionally, positioning reference signal ports or positioning reference signal port groups or CDM port groups mapped to different RE offsets correspond to their respective positioning reference signal generation sequence values, and the corresponding positioning reference signal generation sequence values ​​may be the same or different.

[0269] In some embodiments of this application, optionally, the positioning reference signal ports or positioning reference signal port groups or CDM port groups mapped to different RE offsets have the same corresponding positioning reference signal generation sequence value.

[0270] Implementation Method 1: Multiple positioning reference signal ports (or positioning reference signal port groups, or CDM port groups) are evenly distributed on the REs within the comb, i.e., the RE position corresponding to index x is... So:

[0271] For each configured downlink PRS resource, the UE should assume that the sequence r(o) is factored by β. PRS Scale and map to resource units (k,l) p,μ ,according to:

[0272]

[0273] m = 0, 1, ...

[0274]

[0275]

[0276] Implementation Method 2: Multiple positioning reference signal ports (or positioning reference signal port groups, or CDM port groups) are adjacently distributed on REs within the comb, i.e., the RE position corresponding to index x is... So:

[0277] For each configured downlink PRS resource, the UE should assume that the sequence r(o) is factored by β. PRS Scale and map to resource units (k,l) p,μ ,according to:

[0278]

[0279] m = 0, 1, ...

[0280]

[0281]

[0282] or

[0283]

[0284] Implementation Method 3: Different index x correspond to their respective indicated RE offsets like Therefore, the corresponding RE position is So:

[0285] For each configured downlink PRS resource, the UE should assume that the sequence r(o) is factored by β. PRS Scale and map to resource units (k,l) p,μ ,according to:

[0286]

[0287] m = 0, 1, ...

[0288]

[0289]

[0290] Implementation Method 4: Different indices x correspond to their respective port RE offsets That is, based on the original RE Offset, it additionally indicates the RE offset at the positioning reference signal port level (or positioning reference signal port group level, CDM port group level), such as So:

[0291] For each configured downlink PRS resource, the UE should assume that the sequence r(o) is factored by β. PRS Scale and map to resource units (k,l) p,μ ,according to:

[0292]

[0293] m = 0, 1, ...

[0294]

[0295]

[0296] In some other embodiments of this application, optionally, the positioning reference signal ports, positioning reference signal port groups, or CDM port groups mapped to different RE offsets have different corresponding positioning reference signal generation sequence values. That is, when the gold sequence r(m′) is mapped, m′ is related to at least one of the following: the RE offset corresponding to the positioning reference signal port, the natural number index m (m = 0, 1...), the index x of the positioning reference signal port (or positioning reference signal port group or CDM port group) (which needs to be distinguished by the RE offset), and the number of positioning reference signal ports (or the number of positioning reference signal port groups, or CDM port groups) M (which needs to be distinguished by the RE offset). For example, m′ = m * M + x.

[0297] In one implementation: For each configured downlink PRS resource, the UE should assume that the sequence r(o) is factored by β. PRS Scale and map to resource units (k,l) p,μ ,according to:

[0298]

[0299] m = 0, 1, ...

[0300]

[0301] or

[0302]

[0303] or

[0304]

[0305] or

[0306]

[0307] or

[0308]

[0309]

[0310] m′=m*M+x

[0311] IV. Distinguishing by OFDM symbol position

[0312] In this embodiment of the application, optionally, the OFDM symbol location includes at least one of the following:

[0313] OFDM symbol positions within the same time slot;

[0314] OFDM symbol positions in different time slots.

[0315] In this embodiment of the application, optionally, the communication node distinguishes multiple positioning reference signal ports of the transmitting node by OFDM symbol position, including: the communication node determines the correspondence between the positioning reference signal port or positioning reference signal port group or CDM port group and the OFDM symbol position according to at least one of the second rule agreed in the protocol, the second indication information sent by other nodes and the communication node selection.

[0316] Using methods indicated by other nodes:

[0317] In this embodiment of the application, optionally, the starting position of the OFDM symbol and / or the starting position of the time slot in the second indication information is related to the location reference signal port, the location reference signal port group, or the CDM port group. For example, the starting position of the OFDM symbol and / or the starting position of the slot can be configured per location reference signal port (or location reference signal port group, CDM port group) (or, per resource per location reference signal configuration, or per resource per location reference signal port group, or per resource per CDM port group configuration).

[0318] As agreed upon in the agreement:

[0319] In this embodiment of the application, optionally, the second rule agreed upon in the protocol includes one of the following:

[0320] 1) Within a time slot, different positioning reference signal ports or positioning reference signal port groups or CDM port groups occupy the same number of positioning reference signal symbols, and the symbols are adjacent or differ by the same symbol interval. The multiple positioning reference signal ports or positioning reference signal port groups or CDM port groups are mapped according to the port index or positioning reference signal port group index or CDM port group index arrangement rules.

[0321] The aforementioned intervals may be agreed upon or instructed by agreement.

[0322] One specific mapping arrangement rule is as follows: Within a slot, the time-frequency resource location of the reference signal port index (or reference signal port group index or CDM port group index) is determined, and mapping is performed according to the rule of first frequency domain mapping and then time domain mapping. Optionally, frequency domain mapping from lower frequency domain positions to higher frequency domain positions is sequential mapping, and time domain mapping from earlier time domain positions to later time domain positions is also sequential mapping.

[0323] 2) Different positioning reference signal ports, positioning reference signal port groups, or CDM port groups occupy the same number of positioning reference signal symbols across time slots, and the time slots they occupy are adjacent or differ by the same time slot interval. The multiple positioning reference signal ports, positioning reference signal port groups, or CDM port groups are mapped according to the port index, positioning reference signal port group index, or CDM port group index arrangement rules.

[0324] The aforementioned intervals may be agreed upon or instructed by agreement.

[0325] One specific mapping arrangement rule is as follows: the time-frequency resource locations corresponding to the reference signal port index (or reference signal port group index or CDM port group index) are mapped according to the rule of first frequency domain mapping and then time domain mapping, and first within a slot and then across slots. Optionally, the frequency domain mapping is sequential from lower frequency domain positions to higher frequency domain positions, and the time domain mapping is sequential from earlier time domain positions to later time domain positions.

[0326] V. Differentiation through sequence generation using positioning reference signals (a type of CDM differentiation)

[0327] In this embodiment of the application, optionally, the communication node distinguishes multiple positioning reference signal ports of the transmitting node through a positioning reference signal generation sequence, including:

[0328] The communication node determines the correspondence between the positioning reference signal port and the initial value (cinit) of the positioning reference signal generation sequence generation parameter according to at least one of the rules agreed upon in the protocol, the instructions of other nodes, and the selection of the communication node.

[0329] In this embodiment of the application, optionally, the positioning reference signal generation sequence generation parameter cinit is related to at least one of the following information of the positioning reference signal port:

[0330] Locate the reference signal port index;

[0331] Locate the reference signal port group index;

[0332] CDM port group index;

[0333] Positioning reference signal port index within the positioning reference signal port group;

[0334] Positioning reference signal port index within the CDM port group;

[0335] Number of reference signal ports;

[0336] Number of reference signal port groups;

[0337] Number of CDM port groups;

[0338] Number of CDM port groups within the location reference signal port group;

[0339] Number of positioning reference signal ports within the CDM port group;

[0340] Number of positioning reference signal ports within the positioning reference signal port group.

[0341] In this embodiment of the application, the positioning reference signal port index may optionally be one of the following:

[0342] Positioning reference signal port index of the positioning reference signal transmitting node;

[0343] Positioning reference signal port index within the positioning reference signal port group;

[0344] Positioning reference signal port index within the CDM port group.

[0345] In this embodiment of the application, optionally, the positioning reference signal port index is the positioning reference signal port index of the positioning reference signal transmitting node, and when the configuration of the positioning reference signal port includes the configuration of positioning reference signal port groups and / or CDM port groups, the positioning reference signal port index is determined by the cumulative count of the positioning reference signal port indices in different positioning reference signal port groups and / or CDM port groups.

[0346] In this embodiment of the application, optionally, the positioning reference signal port index is related to at least one of the following:

[0347] Number of reference signal port groups;

[0348] Number of positioning reference signal ports in each positioning reference signal port group;

[0349] Positioning reference signal port index within each positioning reference signal port group;

[0350] Locate the reference signal port group index;

[0351] Locate the CDM port group index within the reference signal port group;

[0352] Number of CDM port groups within each positioning reference signal port group;

[0353] Number of positioning reference signal ports in each CDM port group;

[0354] Positioning reference signal port index within each CDM port group.

[0355] For example, if each positioning reference signal port group contains the same number of positioning reference signal ports, and the positioning reference signal port group index or the positioning reference signal port index, and the port index within each positioning reference signal port group is counted starting from 0, then port index = port group index * port number per group + port index within port group.

[0356] In this embodiment of the application, optionally, the correspondence between the positioning reference signal port and the positioning reference signal generation sequence generation parameter cinit is enabled by a preset parameter.

[0357] In this embodiment of the application, optionally, the communication node distinguishes multiple positioning reference signal ports of the transmitting node through a positioning reference signal generation sequence, including:

[0358] When the preset parameter is indicated, the correspondence between the positioning reference signal port and the positioning reference signal generation sequence generation parameter cinit is enabled, and the positioning reference signal generation sequence is obtained using the calculation formula with the first initial value.

[0359] When the preset parameters are not indicated, the positioning reference signal generation sequence is obtained using the second initial value calculation formula;

[0360] The first initial value calculation formula is related to the positioning reference signal port, while the second initial value calculation formula is not related to the positioning reference signal port.

[0361] Optionally, the preset parameter can be the number of positioning reference signal ports (or the number of positioning reference signal port groups, or the number of CDM port groups). Optionally, if the number of positioning reference signal ports is not configured, it is assumed that the number of positioning reference signal ports is 1.

[0362] In this embodiment of the application, the preset parameters can be indicated by the configuration information of the positioning reference signal port, or by other indication information.

[0363] In this embodiment of the application, optionally, the communication node distinguishes multiple positioning reference signal ports of the transmitting node through a positioning reference signal generation sequence, including:

[0364] When the number of positioning reference signal ports is greater than 1, the correspondence between the positioning reference signal ports and the positioning reference signal generation sequence generation parameter cinit is enabled, and the positioning reference signal generation sequence is obtained using the calculation formula with the first initial value.

[0365] When the number of positioning reference signal ports is 1, the positioning reference signal generation sequence is obtained using the second initial value calculation formula;

[0366] The formula for calculating the first initial value is related to the positioning reference signal port.

[0367] In one implementation: the UE should assume that the reference signal sequence r(m) is defined as:

[0368]

[0369] The pseudo-random sequence c(i) is defined in Section 5.2.1. The pseudo-random sequence generator should be initialized as follows:

[0370]

[0371] or,

[0372]

[0373] In the first formula above, N represents the number of bits occupied by the PRS ports (or port groups) that need to be distinguished by sequence. For example, if there are 2 PRS ports, N = 1; or if there are 2 PRS ports (or port groups) that need to be distinguished by sequence, then N = 1.

[0374] Optionally, if N represents the PRS ports that need to be distinguished by sequence, and the PRS ports are divided into multiple PRS port groups (and / or CDM port groups), then N can represent the total number of bits occupied by the PRS ports in the multiple PRS port groups. In this case, the PRS port index in the formula can be obtained by accumulating the PRS ports in different PRS port groups.

[0375] In the second formula above, N represents the bit length occupied by the number of PRS port groups that need to be distinguished by sequence, and M represents the number of bits occupied by the number of PRS ports within the PRS port group that needs to be distinguished by sequence.

[0376] Optionally, the position of the aforementioned PRS port and / or PRS port group in the cinit formula can also be at the beginning, middle, or end of the formula. Here, we only take the middle position as an example and do not exclude other situations.

[0377] Optionally, when the number of PRS ports is 1, the PRS port index is 0, and M and N are 0; or, when no parameter enables the relationship between cinit and the PRS port, the PRS port index is 0, and M and N are 0.

[0378] In another implementation: the UE should assume that the reference signal sequence r(m) is defined as:

[0379]

[0380] The pseudo-random sequence c(i) is defined in Section 5.2.1. The pseudo-random sequence generator should be initialized to...

[0381]

[0382] Optionally, when the number of PRS ports is 1, the PRS port index is 0; or, when no parameter enables the relationship between cinit and the PRS port, the PRS port index is 0.

[0383] Optionally, the mapping relationship between the PRS port (or PRS port within a PRS port group, or PRS port within a CDM port group) sequence number and the generated sequence can be determined by at least one method, including network indication, protocol agreement, and UE selection.

[0384] VI. Combining multiple differentiation methods

[0385] In this embodiment of the application, optionally, the communication node distinguishes multiple positioning reference signal ports using at least one of the following distinguishing methods, including:

[0386] The communication node selects different differentiation methods to distinguish the multiple positioning reference signal ports of the transmitting node according to the multiplexing technology used.

[0387] In this embodiment of the application, optionally, the communication node selects different differentiation methods according to the multiplexing technology used, including at least one of the following:

[0388] When the multiplexing technology used is CDM, multiple positioning reference signal ports of the transmitting node are distinguished by cyclic shift and / or positioning reference signal generation sequence and / or frequency domain OCC code;

[0389] When the multiplexing technique used is FDM, the multiple positioning reference signal ports of the transmitting node are distinguished by RE offset;

[0390] When the multiplexing technology used is TDM, the multiple positioning reference signal ports of the transmitting node are distinguished by the OFDM symbol position.

[0391] In this embodiment of the application, optionally, the communication node distinguishes multiple positioning reference signal ports using the third and / or fourth differentiation methods, including:

[0392] The communication node distinguishes the multiple positioning reference signal ports through different CDM port groups, wherein the positioning reference signal ports within the same CDM port group occupy the same time-frequency position.

[0393] In this embodiment of the application, optionally, the communication node distinguishes the plurality of positioning reference signal ports through different CDM port groups, including:

[0394] The communication node uses the first differentiation method, the second differentiation method, and / or the fifth differentiation method to distinguish the positioning reference signal ports within the same CDM port group.

[0395] In this embodiment of the application, optionally, the communication node distinguishes the plurality of positioning reference signal ports through different CDM port groups, including:

[0396] The communication nodes sort the CDM port group in ascending order, first in the frequency domain and then in the time domain, and distinguish different CDM port groups based on the sorting results.

[0397] Optionally, for multiple CDM port groups at a certain time domain location, the CDM port group index is incremented sequentially from the lower frequency domain location to the higher frequency domain location; after the frequency domain increment is completed, the same frequency domain increment is performed from the next time domain location.

[0398] In this embodiment of the application, optionally, if the RE offset and / or OFDM symbol position of the positioning reference signal port are the same, the positioning reference signal ports with different cyclic shifts and / or positioning reference signal generation sequences and / or frequency domain orthogonal codes form a CDM port group; wherein, different RE offsets correspond to different CDM port groups, different OFDM symbol positions correspond to different CDM port groups, and different CDM port groups correspond to different time-frequency positions.

[0399] In this embodiment, optionally, if the OFDM symbol positions of the positioning reference signal ports are the same, the cyclic shifts corresponding to the CDM port groups formed by the positioning reference signal ports corresponding to different RE offsets may be the same or different. Optionally, whether they are the same or different depends on whether the mapping of the cyclic shift is related to the relative RE offset and / or the positioning reference signal symbol index.

[0400] In this embodiment of the application, optionally, if the RE offsets of the positioning reference signal ports are the same, the cyclic shifts of the CDM port groups composed of positioning reference signal ports corresponding to different OFDM symbol positions are the same.

[0401] In this embodiment of the application, optionally, the number of CDM port groups distinguished by RE offset is M, and the number of ports in each CDM port group is N / M, where N is the number of the plurality of positioning reference signal ports. Alternatively, the number of ports distinguished by RE offset is M, and the number of ports distinguished by cyclic shift (or CDM) is N / M.

[0402] Optionally, if the number of CDM port groups distinguished by RE offset is M, and the number of CDM port groups distinguishable by different OFDM symbols is L, then the total number of available CDM port groups is M*L. The number of ports in each CDM port group is N / L / M, where N is the number of the plurality of positioning reference signal ports. In this embodiment, optionally, before the communication node distinguishes the plurality of positioning reference signal ports using at least one of the following methods, it further includes:

[0403] The communication node determines, according to the protocol agreement or third indication information sent by other communication nodes, that the time-frequency resources occupied by the target positioning reference signal port among the plurality of positioning reference signal ports are not shared with other positioning reference signal ports.

[0404] The communication node distinguishes multiple positioning reference signal ports using at least one of the following methods:

[0405] The communication node distinguishes multiple positioning reference signal ports according to the protocol agreement or third indication information sent by other communication nodes.

[0406] The use cases for the target positioning reference signal port are as follows: When the receiving node processes the positioning reference signal of the sending node, it can first process the positioning reference signal of the target positioning reference signal port to obtain the accurate timing of the sending node; then, based on this timing, it can process other positioning reference signal ports (such as ports related to CDM).

[0407] In this embodiment of the application, optionally, the third indication information includes the identification information of the target positioning reference signal port, and the identification information includes at least one of the following: transmitting node identifier, positioning reference signal resource set ID, positioning reference signal resource ID list, positioning reference signal resource ID, positioning reference signal port index, positioning reference signal port list, positioning reference signal port group index, and CDM port group index.

[0408] In this embodiment of the application, optionally, each transmitting node corresponds to a target positioning reference signal port.

[0409] In one implementation, multiple PRS ports of a PRS transmitting node are distinguished by at least one of FDM, TDM, and CDM methods. Multiple ports in a CDM port group share the same time-frequency resource location (referred to as a CDM port group), and different CDM port groups are distinguished by FDM and / or TDM. Therefore, the target PRS port can occupy a separate time-frequency resource and has no CDM relationship with other ports; the CDM port group corresponding to the target PRS port contains only one port.

[0410] In this embodiment of the application, optionally, the target positioning reference signal port is the positioning reference signal port with the highest measurement priority of the corresponding transmitting node; or, the target positioning reference signal port is a reference positioning reference signal port.

[0411] In this embodiment of the application, optionally, before the communication node distinguishes multiple positioning reference signal ports using at least one of the following distinction methods, it further includes:

[0412] The communication node determines the differentiation method based on at least one of the following: the number of positioning reference signal ports, the size of the comb structure, and the number of symbols.

[0413] In this embodiment of the application, optionally, the communication node determines the differentiation method based on the size of the comb structure, including:

[0414] The communication node determines the differentiation method for each comb structure size according to at least one of the protocol agreement or instructions from other communication nodes.

[0415] Optionally, the communication node determines the differentiation method based on the number of ports, including:

[0416] The communication node determines the differentiation method for the number of ports based on at least one of the protocol agreement or instructions from other communication nodes.

[0417] Optionally, the communication node determines the distinction method based on the number of symbols, including:

[0418] The communication node determines the distinction method for each number of symbols based on at least one of the protocol agreement or instructions from other communication nodes.

[0419] Optionally, the communication node determines the differentiation method based on the number of ports and the size of the comb structure, including:

[0420] The communication node determines the distinction method for each number of ports and each comb structure size according to at least one of the protocol agreement or instructions from other communication nodes.

[0421] Optionally, the communication node determines the differentiation method based on the number of ports and the number of symbols, including:

[0422] The communication node determines the distinction method for each number of symbols and each number of ports according to at least one of the protocol agreement or instructions from other communication nodes.

[0423] Optionally, the communication node determines the differentiation method based on the comb structure size and the number of symbols, including:

[0424] The communication node determines the distinction method for each comb structure size and each number of symbols according to at least one of the protocol agreement or instructions from other communication nodes.

[0425] Optionally, the communication node determines the differentiation method based on the comb structure size, the number of symbols, and the number of ports, including:

[0426] The communication node determines the distinction method for each comb structure size, each number of symbols, and each number of ports according to at least one of the protocol agreement or instructions from other communication nodes.

[0427] Optionally, the above-mentioned methods of differentiation can be represented in a table.

[0428] In this embodiment of the application, optionally, the communication node determines the differentiation method corresponding to the size of each comb structure according to at least one of the protocol agreement or instructions from other communication nodes, including:

[0429] The communication node determines, according to at least one of the protocol agreement or instructions from other communication nodes, the number of positioning reference signal ports that can be used for at least one of the multiple differentiation methods under each comb structure size.

[0430] In this embodiment of the application, before the communication node distinguishes the multiple positioning reference signal ports of the transmitting node, the method further includes: the communication node receiving or transmitting configuration information, wherein the configuration information includes at least one of the following:

[0431] Configuration information for N positioning reference signal ports;

[0432] The association between N positioning reference signal ports and positioning reference signal resource sets and / or positioning reference signal resources;

[0433] Where N is a positive integer greater than 1.

[0434] Optionally, the configuration information of the N positioning reference signal ports includes at least one of the following:

[0435] Number of ports;

[0436] Port index;

[0437] Positioning reference signal port group;

[0438] Port location identifier.

[0439] Optionally, the configuration information of the positioning reference signal port group includes at least one of the following: the number of positioning reference signal port groups, the index of the positioning reference signal port group, the number of positioning reference signal ports in the positioning reference signal port group, the index of the positioning reference signal port in the positioning reference signal port group, the location identifier of the positioning reference signal port group, the number of CDM port groups in the positioning reference signal port group, the index of the CDM port group in the positioning reference signal port group, the number of positioning reference signal ports in the CDM port group, and the index of the positioning reference signal port in the CDM port group.

[0440] Optionally, the association between the N positioning reference signal ports and the positioning reference signal resource set and / or positioning reference signal resources includes one of the following:

[0441] The number of positioning reference signal ports associated with each positioning reference signal resource set is less than or equal to N, and all positioning reference signal resource sets are associated with the N positioning reference signal ports.

[0442] Each positioning reference signal resource set is associated with the N positioning reference signal ports. In the above embodiments, for the transmitting node, other nodes include, but are not limited to, at least one of the receiving node, control node, location server, and serving gNB; for the receiving node, other nodes include, but are not limited to, at least one of the transmitting node, control node, location server, and serving gNB.

[0443] In the above embodiments, information indicated or reported by the sending node to at least one of the receiving node, control node, location server, and serving gNB can be sent in at least one of the following ways:

[0444] 1) The sending node instructs or reports to the receiving node and / or the control node and / or the serving gNB via at least one of the following methods: broadcast, multicast, or unicast.

[0445] 1a) Through the PC5 interface, including but not limited to at least one of the following: first-level sidelink control information (SCI), second-level SCI, PC5-RRC, PC5-MAC CE, PC5-LPP, PC5-LPPa, etc.

[0446] 1b) via the UU interface, including but not limited to: RRC, MAC CE, DCI / PDCCH, Uplink Control Information (UCI), PUCCH, SIB1, SIBx, SDT, PRACH, paging, msg1, mgs2, msg3, msg4, msg5, msgA, msgB, NR Positioning Protocol A (NRPPa), LPPa, LPP, Xn, X2.

[0447] 2) Instructed or reported to the location server by the sending node, including at least one of the following methods:

[0448] The interface includes, but is not limited to, at least one of the following: RRC, MAC CE, UCI / PUCCH, NRPPa, LPPa, LPP, Xn, and X2.

[0449] Information (such as measurement results) indicated or reported by the receiving node to at least one of the sending node, control node, location server, and serving gNB can be sent in at least one of the following ways:

[0450] 1) The receiving node indicates or reports to the sending node and / or the control node and / or the serving gNB via at least one of the following methods: broadcast, multicast, or unicast.

[0451] Through the PC5 interface, including but not limited to at least one of the following: Level 1 SCI, Level 2 SCI, PC5-RRC, PC5-MAC CE, PC5-LPP, PC5-LPPa, etc. via sidelink;

[0452] The UU interface includes, but is not limited to, at least one of: RRC, MAC CE, DCI / PDCCH, UCI, PUCCH, SIB1, SIBx, SDT, PRACH, paging, msg1, mgs2, msg3, msg4, msg5, msgA, msgB, NRPPa, LPPa, LPP, Xn, X2;

[0453] 2) The PRS receiving node instructs / reports to the location server, including at least one of the following methods:

[0454] The interface includes, but is not limited to, at least one of the following: RRC, MAC CE, UCI / PUCCH, NRPPa, LPPa, LPP, Xn, and X2.

[0455] A PRS receiving node can receive information (such as PRS configuration) sent / indicated by at least one of the following methods: PRS sending node, location server, control node, and serving gNB.

[0456] 1) Receive information sent / indicated from the PRS sending node and / or control node and / or serving gNB via at least one of the following signaling methods: broadcast, multicast, unicast

[0457] The signaling of the PC5 interface includes, but is not limited to, at least one of the following: sidelink first-level SCI, second-level SCI, PC5-RRC, PC5-MAC CE, PC5-LPP, PC5-LPPa, etc.

[0458] The signaling in the UU interface includes, but is not limited to, at least one of the following: RRC, MAC CE, DCI / PDCCH, UCI, PUCCH, SIB1, SIBx, SDT, PRACH, paging, msg1, mgs2, msg3, msg4, msg5, msgA, msgB, NRPPa, LPPa, LPP, Xn, X2.

[0459] 2) Receive information sent / indicated from the location server, including at least one of the following signaling methods:

[0460] The signaling in the UU interface includes, but is not limited to, at least one of the following: RRC, MAC CE, DCI / PDCCH, NRPPa, LPPa, LPP, paging, SIB1, SIBx, msg2, msg4, and msgB.

[0461] The multi-port positioning reference signal differentiation method provided in this application can be executed by a multi-port positioning reference signal differentiation device. This application uses the execution of the multi-port positioning reference signal differentiation method by a multi-port positioning reference signal differentiation device as an example to illustrate the multi-port positioning reference signal differentiation device provided in this application.

[0462] Please refer to Figure 4 This application embodiment also provides a positioning reference signal port differentiation device 40, including:

[0463] Distinguishing module 41 is used to distinguish multiple positioning reference signal ports using at least one of the following distinguishing methods:

[0464] The first differentiation method based on cyclic shift;

[0465] A second differentiation method based on frequency domain orthogonal codes;

[0466] A third differentiation method based on resource unit (RE) offset;

[0467] A fourth differentiation method based on the symbol position of Orthogonal Frequency Division Multiplexing (OFDM);

[0468] The fifth differentiation method is based on generating sequences using positioning reference signals.

[0469] Optionally, the cyclic shift corresponding to the positioning reference signal port is related to at least one of the following parameters:

[0470] Maximum cyclic shift;

[0471] Initial circular shift;

[0472] Size of the comb-like structure;

[0473] Relative RE offset;

[0474] Number of reference signal resource symbols for positioning;

[0475] Location reference signal resource symbol index;

[0476] Orthogonal code.

[0477] Optionally, the parameters related to the cyclic shift corresponding to the positioning reference signal port and / or the values ​​of the related parameters are determined according to at least one of the following methods: protocol agreement, other node indication, and the selection of the communication node.

[0478] Optionally, if the first differentiation method is used to differentiate multiple positioning reference signal ports, different positioning reference signal ports correspond to different cyclic shifts.

[0479] Optionally, the different positioning reference signal ports are different positioning reference signal ports of the transmitting node, or different positioning reference signal ports within a positioning reference signal group, or different positioning reference signal ports within a CDM port group.

[0480] Optionally, the differentiation module 41 is used to determine the correspondence between the positioning reference signal port and the cyclic shift based on at least one of the protocol agreement, other node indications, and the selected communication node.

[0481] Optionally, if the second differentiation method is used to differentiate multiple positioning reference signal ports, different positioning reference signal ports correspond to different frequency domain orthogonal codes.

[0482] Optionally, the differentiation module 41 is used to determine the correspondence between the positioning reference signal port and the frequency domain orthogonal code based on at least one of the protocol agreement, other node indications, and the selected communication node.

[0483] Optionally, if the third differentiation method is used to differentiate multiple positioning reference signal ports, different positioning reference signal ports or positioning reference signal port groups or CDM port groups are mapped to different RE offsets respectively.

[0484] Optionally, the differentiation module 41 is used to determine the correspondence between the positioning reference signal port or positioning reference signal port group or CDM port group and the RE offset based on at least one of the first rule agreed upon in the protocol, the first indication information sent by other nodes, and the communication node selection.

[0485] Optionally, the RE offset is the RE offset within the same physical resource block.

[0486] Optionally, the RE offset indicated in the first indication information is the RE offset of the positioning reference signal port, the positioning reference signal port group, or the CDM port group;

[0487] or

[0488] The first indication information indicates: RE offset and port RE offset, wherein the port RE offset is the offset value of the positioning reference signal port or positioning reference signal port group or CDM port group relative to the RE offset.

[0489] Optionally, the size of the port RE offset is in, The size is that of a comb-like structure.

[0490] Optionally, the first rule agreed upon in the protocol includes:

[0491] Multiple positioning reference signal ports, or groups of positioning reference signal ports, or groups of CDM ports are distributed at equal intervals or adjacently on resource units within the comb structure.

[0492] Optionally, multiple positioning reference signal ports, or groups of positioning reference signal ports, or CDM port groups are equally spaced and distributed on resource units within the comb structure, including:

[0493] Multiple positioning reference signal ports, or groups of positioning reference signal ports, or groups of CDM ports are evenly distributed at equal intervals on the resource units within the comb-shaped structure.

[0494] Optionally, positioning reference signal ports, positioning reference signal port groups, or CDM port groups mapped to different RE offsets generate sequence values ​​corresponding to their respective positioning reference signals.

[0495] Optionally, the OFDM symbol location includes at least one of the following:

[0496] OFDM symbol positions within the same time slot;

[0497] OFDM symbol positions in different time slots.

[0498] Optionally, the differentiation module 41 is used to determine the correspondence between the positioning reference signal port or positioning reference signal port group or CDM port group and the OFDM symbol position according to at least one of the second rule agreed upon in the protocol, the second indication information sent by other nodes, and the communication node selection.

[0499] Optionally, the second indication information indicates the starting position of the OFDM symbol in each time slot and / or the starting position of the time slot, which is related to the positioning reference signal port or the positioning reference signal port group or the CDM port group.

[0500] Optionally, the second rule agreed upon in the agreement includes one of the following:

[0501] Within a time slot, different positioning reference signal ports, positioning reference signal port groups, or CDM port groups occupy the same number of positioning reference signal symbols, and the symbols are adjacent or differ by the same symbol interval. The multiple positioning reference signal ports, positioning reference signal port groups, or CDM port groups are mapped according to the port index, positioning reference signal port group index, or CDM port group index arrangement rules.

[0502] Different positioning reference signal ports, positioning reference signal port groups, or CDM port groups occupy the same number of positioning reference signal symbols across time slots, and the time slots they occupy are adjacent or differ by the same time slot interval. The multiple positioning reference signal ports, positioning reference signal port groups, or CDM port groups are mapped according to the port index, positioning reference signal port group index, or CDM port group index arrangement rules.

[0503] Optionally, the differentiation module 41 is used to determine the correspondence between the positioning reference signal port and the positioning reference signal generation sequence generation parameter cinit according to at least one of the rules agreed upon in the protocol, the indication of other nodes, and the selection of the communication node.

[0504] Optionally, the positioning reference signal generation sequence generation parameter cinit is related to at least one of the following information of the positioning reference signal port:

[0505] Locate the reference signal port index;

[0506] Locate the reference signal port group index;

[0507] CDM port group index;

[0508] Positioning reference signal port index within the positioning reference signal port group;

[0509] Positioning reference signal port index within the CDM port group;

[0510] Number of reference signal ports;

[0511] Number of reference signal port groups;

[0512] Number of CDM port groups;

[0513] Number of CDM port groups within the location reference signal port group;

[0514] Number of positioning reference signal ports within the CDM port group;

[0515] Number of positioning reference signal ports within the positioning reference signal port group.

[0516] Optionally, the positioning reference signal port index is one of the following:

[0517] Positioning reference signal port index of the positioning reference signal transmitting node;

[0518] Positioning reference signal port index within the positioning reference signal port group;

[0519] Positioning reference signal port index within the CDM port group.

[0520] Optionally, if the positioning reference signal port index is the positioning reference signal port index of the positioning reference signal transmitting node, and the configuration of the positioning reference signal port includes the configuration of positioning reference signal port groups and / or CDM port groups, the positioning reference signal port index is determined by the cumulative count of the positioning reference signal port indices in different positioning reference signal port groups and / or CDM port groups.

[0521] Optionally, the positioning reference signal port index is related to at least one of the following:

[0522] Number of reference signal port groups;

[0523] Number of positioning reference signal ports in each positioning reference signal port group;

[0524] Positioning reference signal port index within each positioning reference signal port group;

[0525] Locate the reference signal port group index;

[0526] Locate the CDM port group index within the reference signal port group;

[0527] Number of CDM port groups within each positioning reference signal port group;

[0528] Number of positioning reference signal ports in each CDM port group;

[0529] Positioning reference signal port index within each CDM port group.

[0530] Optionally, the correspondence between the positioning reference signal port and the positioning reference signal generation sequence generation parameter cinit is enabled by a preset parameter.

[0531] Optionally, the differentiation module 41 is used to enable the correspondence between the positioning reference signal port and the positioning reference signal generation sequence generation parameter cinit when the preset parameter is indicated, and to obtain the positioning reference signal generation sequence using the calculation formula with the first initial value.

[0532] When the preset parameters are not indicated, the positioning reference signal generation sequence is obtained using the second initial value calculation formula;

[0533] The formula for calculating the first initial value is related to the positioning reference signal port.

[0534] Optionally, the distinguishing module 41 is used to enable the correspondence between the positioning reference signal port and the positioning reference signal generation sequence generation parameter cinit when the number of positioning reference signal ports is greater than 1, and to obtain the positioning reference signal generation sequence using the calculation formula with the first initial value.

[0535] When the number of positioning reference signal ports is 1, the positioning reference signal generation sequence is obtained using the second initial value calculation formula;

[0536] The formula for calculating the first initial value is related to the positioning reference signal port.

[0537] Optionally, the distinguishing module 41 is used to determine that if the RE offset and / or OFDM symbol position of the positioning reference signal port are the same, positioning reference signal ports with different cyclic shift and / or positioning reference signal generation sequences and / or frequency domain orthogonal codes form a CDM port group.

[0538] Among them, different RE offsets correspond to different CDM port groups, different OFDM symbol positions correspond to different CDM port groups, and different CDM port groups correspond to different time-frequency positions.

[0539] Optionally, the differentiation module 41 is used to determine whether the cyclic shifts corresponding to the CDM port groups composed of positioning reference signal ports corresponding to different RE offsets are the same or different if the OFDM symbol positions of the positioning reference signal ports are the same.

[0540] Optionally, the differentiation module 41 is used to determine that the cyclic shifts of the CDM port groups composed of positioning reference signal ports corresponding to different OFDM symbol positions are the same if the RE offsets of the positioning reference signal ports are the same.

[0541] Optionally, the distinguishing module 41 is used to sort the indexes of the CDM port group in a manner that first increases the frequency domain and then the time domain.

[0542] Optionally, the number of CDM port groups distinguished by RE offset is M, and the number of ports in each CDM port group is N / M, where N is the number of the plurality of positioning reference signal ports.

[0543] Optionally, the differentiation module 41 is used to determine, according to the protocol agreement or third indication information sent by other communication nodes, that the time-frequency resources occupied by the target positioning reference signal port among the plurality of positioning reference signal ports are not shared with other positioning reference signal ports.

[0544] Optionally, the third indication information includes the identification information of the target positioning reference signal port, and the identification information includes at least one of the following: transmitting node identifier, positioning reference signal resource set ID, positioning reference signal resource ID list, positioning reference signal resource ID, positioning reference signal port index, positioning reference signal port list, positioning reference signal port group index, and CDM port group index.

[0545] Optionally, each transmitting node corresponds to a target positioning reference signal port.

[0546] Optionally, the target positioning reference signal port is the positioning reference signal port with the highest measurement priority of the corresponding transmitting node;

[0547] or,

[0548] The target positioning reference signal port is a reference positioning reference signal port.

[0549] Optionally, the differentiation module 41 is used to determine the differentiation method based on at least one of the following: the number of positioning reference signal ports, the size of the comb structure, and the number of symbols.

[0550] Optionally, the differentiation module 41 is used to determine the differentiation method for each comb structure size according to at least one of the protocol agreement or other communication node indications.

[0551] Optionally, the differentiation module 41 is used to determine, according to at least one of the protocol agreement or other communication node indications, the number of positioning reference signal ports that can be used for at least one of the multiple differentiation methods under each comb structure size.

[0552] The multi-port positioning reference signal differentiation device in this application embodiment can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or other devices besides a terminal. For example, the terminal can include, but is not limited to, the type of terminal 11 listed above; other devices can be servers, network attached storage (NAS), etc., and this application embodiment does not specifically limit the type.

[0553] The multi-port positioning reference signal differentiation device provided in this application embodiment can achieve… Figure 3 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0554] Optional, such as Figure 5 As shown, this application embodiment also provides a communication device 50, including a processor 51 and a memory 52. ​​The memory 52 stores a program or instructions that can run on the processor 51. When the program or instructions are executed by the processor 51, they implement the various steps of the above-described multi-port positioning reference signal differentiation method embodiment and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0555] This application embodiment also provides a terminal, including a processor and a communication interface, wherein the processor is used to distinguish multiple positioning reference signal ports using at least one of the following distinguishing methods:

[0556] The first differentiation method based on cyclic shift;

[0557] A second differentiation method based on frequency domain orthogonal codes;

[0558] A third differentiation method based on resource unit (RE) offset;

[0559] A fourth differentiation method based on the symbol position of Orthogonal Frequency Division Multiplexing (OFDM);

[0560] The fifth differentiation method is based on generating sequences using positioning reference signals.

[0561] This terminal embodiment corresponds to the aforementioned terminal-side method embodiment. All implementation processes and methods of the aforementioned method embodiments can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 6 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0562] The terminal 60 includes, but is not limited to, at least some of the following components: radio frequency unit 61, network module 62, audio output unit 63, input unit 64, sensor 65, display unit 66, user input unit 67, interface unit 68, memory 69, and processor 610.

[0563] Those skilled in the art will understand that the terminal 60 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor x 10 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 6 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0564] It should be understood that, in this embodiment, the input unit 64 may include a graphics processing unit (GPU) 641 and a microphone 642. The GPU 641 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 66 may include a display panel 661, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 67 includes at least one of a touch panel 671 and other input devices 672. The touch panel 671 is also called a touch screen. The touch panel 671 may include a touch detection device and a touch controller. Other input devices 672 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0565] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 61 can transmit it to the processor 610 for processing; in addition, the radio frequency unit 61 can send uplink data to the network-side device. Typically, the radio frequency unit 61 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0566] The memory 69 can be used to store software programs or instructions, as well as various data. The memory 69 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 69 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 69 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0567] Processor 610 may include one or more processing units; optionally, processor 610 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 610.

[0568] The processor 610 is used to distinguish multiple positioning reference signal ports using at least one of the following distinguishing methods:

[0569] The first differentiation method based on cyclic shift;

[0570] A second differentiation method based on frequency domain orthogonal codes;

[0571] A third differentiation method based on resource unit (RE) offset;

[0572] A fourth differentiation method based on the symbol position of Orthogonal Frequency Division Multiplexing (OFDM);

[0573] The fifth differentiation method is based on generating sequences using positioning reference signals.

[0574] Optionally, the cyclic shift corresponding to the positioning reference signal port is related to at least one of the following parameters:

[0575] Maximum cyclic shift;

[0576] Initial circular shift;

[0577] Size of the comb-like structure;

[0578] Relative RE offset;

[0579] Number of reference signal resource symbols for positioning;

[0580] Location reference signal resource symbol index;

[0581] Orthogonal code.

[0582] Optionally, the parameters related to the cyclic shift corresponding to the positioning reference signal port and / or the values ​​of the related parameters are determined according to at least one of the following methods: protocol agreement, other node indication, and the selection of the communication node.

[0583] Optionally, if the first differentiation method is used to differentiate multiple positioning reference signal ports, different positioning reference signal ports correspond to different cyclic shifts.

[0584] Optionally, the different positioning reference signal ports are different positioning reference signal ports of the transmitting node, or different positioning reference signal ports within a positioning reference signal group, or different positioning reference signal ports within a CDM port group.

[0585] Optionally, the processor 610 is configured to determine the correspondence between the positioning reference signal port and the cyclic shift based on at least one of the following: protocol agreement, indication from other nodes, and selection of the communication node.

[0586] Optionally, if the second differentiation method is used to differentiate multiple positioning reference signal ports, different positioning reference signal ports correspond to different frequency domain orthogonal codes.

[0587] Optionally, the processor 610 is configured to determine the correspondence between the positioning reference signal port and the frequency domain orthogonal code based on at least one of the following: protocol agreement, indication from other nodes, and selection of the communication node.

[0588] Optionally, if the third differentiation method is used to differentiate multiple positioning reference signal ports, different positioning reference signal ports or positioning reference signal port groups or CDM port groups are mapped to different RE offsets respectively.

[0589] Optionally, the processor 610 is configured to determine the correspondence between the positioning reference signal port or positioning reference signal port group or CDM port group and the RE offset based on at least one of the first rule agreed upon in the protocol, the first indication information sent by other nodes, and the communication node selection.

[0590] Optionally, the RE offset is the RE offset within the same physical resource block.

[0591] Optionally, the RE offset indicated in the first indication information is the RE offset of the positioning reference signal port, the positioning reference signal port group, or the CDM port group;

[0592] or

[0593] The first indication information indicates: RE offset and port RE offset, wherein the port RE offset is the offset value of the positioning reference signal port or positioning reference signal port group or CDM port group relative to the RE offset.

[0594] Optionally, the size of the port RE offset is in, The size is that of a comb-like structure.

[0595] Optionally, the first rule agreed upon in the protocol includes:

[0596] Multiple positioning reference signal ports, or groups of positioning reference signal ports, or groups of CDM ports are distributed at equal intervals or adjacently on resource units within the comb structure.

[0597] Optionally, multiple positioning reference signal ports, or groups of positioning reference signal ports, or CDM port groups are equally spaced and distributed on resource units within the comb structure, including:

[0598] Multiple positioning reference signal ports, or groups of positioning reference signal ports, or groups of CDM ports are evenly distributed at equal intervals on the resource units within the comb-shaped structure.

[0599] Optionally, positioning reference signal ports, positioning reference signal port groups, or CDM port groups mapped to different RE offsets generate sequence values ​​corresponding to their respective positioning reference signals.

[0600] Optionally, the OFDM symbol location includes at least one of the following:

[0601] OFDM symbol positions within the same time slot;

[0602] OFDM symbol positions in different time slots.

[0603] Optionally, the processor 610 is configured to determine the correspondence between the positioning reference signal port or positioning reference signal port group or CDM port group and the OFDM symbol position according to at least one of the second rule agreed upon in the protocol, the second indication information sent by other nodes, and the communication node selection.

[0604] Optionally, the second indication information indicates the starting position of the OFDM symbol in each time slot and / or the starting position of the time slot, which is related to the positioning reference signal port or the positioning reference signal port group or the CDM port group.

[0605] Optionally, the second rule agreed upon in the agreement includes one of the following:

[0606] Within a time slot, different positioning reference signal ports, positioning reference signal port groups, or CDM port groups occupy the same number of positioning reference signal symbols, and the symbols are adjacent or differ by the same symbol interval. The multiple positioning reference signal ports, positioning reference signal port groups, or CDM port groups are mapped according to the port index, positioning reference signal port group index, or CDM port group index arrangement rules.

[0607] Different positioning reference signal ports, positioning reference signal port groups, or CDM port groups occupy the same number of positioning reference signal symbols across time slots, and the time slots they occupy are adjacent or differ by the same time slot interval. The multiple positioning reference signal ports, positioning reference signal port groups, or CDM port groups are mapped according to the port index, positioning reference signal port group index, or CDM port group index arrangement rules.

[0608] Optionally, the processor 610 is configured to determine the correspondence between the positioning reference signal port and the positioning reference signal generation sequence generation parameter cinit according to at least one of the rules agreed upon in the protocol, instructions from other nodes, and the selection of the communication node.

[0609] Optionally, the positioning reference signal generation sequence generation parameter cinit is related to at least one of the following information of the positioning reference signal port:

[0610] Locate the reference signal port index;

[0611] Locate the reference signal port group index;

[0612] CDM port group index;

[0613] Positioning reference signal port index within the positioning reference signal port group;

[0614] Positioning reference signal port index within the CDM port group;

[0615] Number of reference signal ports;

[0616] Number of reference signal port groups;

[0617] Number of CDM port groups;

[0618] Number of CDM port groups within the location reference signal port group;

[0619] Number of positioning reference signal ports within the CDM port group;

[0620] Number of positioning reference signal ports within the positioning reference signal port group.

[0621] Optionally, the positioning reference signal port index is one of the following:

[0622] Positioning reference signal port index of the positioning reference signal transmitting node;

[0623] Positioning reference signal port index within the positioning reference signal port group;

[0624] Positioning reference signal port index within the CDM port group.

[0625] Optionally, if the positioning reference signal port index is the positioning reference signal port index of the positioning reference signal transmitting node, and the configuration of the positioning reference signal port includes the configuration of positioning reference signal port groups and / or CDM port groups, the positioning reference signal port index is determined by the cumulative count of the positioning reference signal port indices in different positioning reference signal port groups and / or CDM port groups.

[0626] Optionally, the positioning reference signal port index is related to at least one of the following:

[0627] Number of reference signal port groups;

[0628] Number of positioning reference signal ports in each positioning reference signal port group;

[0629] Positioning reference signal port index within each positioning reference signal port group;

[0630] Locate the reference signal port group index;

[0631] Locate the CDM port group index within the reference signal port group;

[0632] Number of CDM port groups within each positioning reference signal port group;

[0633] Number of positioning reference signal ports in each CDM port group;

[0634] Positioning reference signal port index within each CDM port group.

[0635] Optionally, the correspondence between the positioning reference signal port and the positioning reference signal generation sequence generation parameter cinit is enabled by a preset parameter.

[0636] Optionally, the processor 610 is configured to enable the correspondence between the positioning reference signal port and the positioning reference signal generation sequence generation parameter cinit when the preset parameter is indicated, and obtain the positioning reference signal generation sequence using the calculation formula with the first initial value.

[0637] When the preset parameters are not indicated, the positioning reference signal generation sequence is obtained using the second initial value calculation formula;

[0638] The formula for calculating the first initial value is related to the positioning reference signal port.

[0639] Optionally, the processor 610 is configured to enable the correspondence between the positioning reference signal ports and the positioning reference signal generation sequence generation parameter cinit when the number of positioning reference signal ports is greater than 1, and to obtain the positioning reference signal generation sequence using the calculation formula with the first initial value.

[0640] When the number of positioning reference signal ports is 1, the positioning reference signal generation sequence is obtained using the second initial value calculation formula;

[0641] The formula for calculating the first initial value is related to the positioning reference signal port.

[0642] Optionally, the processor 610 is configured to distinguish the plurality of positioning reference signal ports through different CDM port groups, wherein the positioning reference signal ports within the same CDM port group occupy the same time-frequency position.

[0643] Optionally, the processor 610 is configured to distinguish positioning reference signal ports within the same CDM port group using the first distinguishing method, the second distinguishing method, and / or the fifth distinguishing method.

[0644] Optionally, the processor 610 is configured to sort the indexes of the CDM port groups in ascending order, first in the frequency domain and then in the time domain, and to distinguish different CDM port groups based on the sorting results.

[0645] Optionally, if the RE offset and / or OFDM symbol position of the positioning reference signal port are the same, the positioning reference signal ports with different cyclic shifts and / or positioning reference signal generation sequences and / or frequency domain orthogonal codes form a CDM port group; wherein, different RE offsets correspond to different CDM port groups, different OFDM symbol positions correspond to different CDM port groups, and different CDM port groups correspond to different time-frequency positions.

[0646] Optionally, if the OFDM symbol positions of the positioning reference signal ports are the same, the cyclic shifts corresponding to the CDM port groups formed by the positioning reference signal ports corresponding to different RE offsets may be the same or different.

[0647] Optionally, if the RE offsets of the positioning reference signal ports are the same, the cyclic shifts corresponding to the CDM port groups formed by the positioning reference signal ports corresponding to different OFDM symbol positions are the same.

[0648] Optionally, the number of CDM port groups distinguished by RE offset is M, and the number of ports in each CDM port group is N / M, where N is the number of the plurality of positioning reference signal ports.

[0649] Optionally, the processor 610 is configured to determine, according to a protocol agreement or third indication information sent by other communication nodes, that the time-frequency resources occupied by the target positioning reference signal port among the plurality of positioning reference signal ports are not shared with other positioning reference signal ports.

[0650] Optionally, the third indication information includes the identification information of the target positioning reference signal port, and the identification information includes at least one of the following: transmitting node identifier, positioning reference signal resource set ID, positioning reference signal resource ID list, positioning reference signal resource ID, positioning reference signal port index, positioning reference signal port list, positioning reference signal port group index, and CDM port group index.

[0651] Optionally, each transmitting node corresponds to a target positioning reference signal port.

[0652] Optionally, the target positioning reference signal port is the positioning reference signal port with the highest measurement priority of the corresponding transmitting node;

[0653] or,

[0654] The target positioning reference signal port is a reference positioning reference signal port.

[0655] Optionally, the processor 610 is configured to determine the differentiation method based on at least one of the following: the number of positioning reference signal ports, the size of the comb structure, and the number of symbols.

[0656] Optionally, the processor 610 is configured to determine the differentiation method for each comb structure size based on at least one of the protocol agreement or other communication node indications.

[0657] Optionally, the processor 610 is configured to determine, based on at least one of the protocol conventions or other communication node indications, the number of positioning reference signal ports that can be used for at least one of the multiple differentiation methods under each comb structure size.

[0658] This application embodiment also provides a network-side device, including a processor and a communication interface, wherein the processor is used to distinguish multiple positioning reference signal ports using at least one of the following distinguishing methods:

[0659] The first differentiation method based on cyclic shift;

[0660] A second differentiation method based on frequency domain orthogonal codes;

[0661] A third differentiation method based on resource unit (RE) offset;

[0662] A fourth differentiation method based on the symbol position of Orthogonal Frequency Division Multiplexing (OFDM);

[0663] The fifth differentiation method is based on generating sequences using positioning reference signals.

[0664] This network-side device embodiment corresponds to the above method embodiment. All implementation processes and methods of the above method embodiment can be applied to this network-side device embodiment and can achieve the same technical effect.

[0665] Specifically, embodiments of this application also provide a network-side device. For example... Figure 7 As shown, the network-side device 700 includes: an antenna 71, a radio frequency (RF) device 72, a baseband device 73, a processor 74, and a memory 75. The antenna 71 is connected to the RF device 72. In the uplink direction, the RF device 72 receives information through the antenna 71 and transmits the received information to the baseband device 73 for processing. In the downlink direction, the baseband device 73 processes the information to be transmitted and sends it to the RF device 72. The RF device 72 processes the received information and transmits it through the antenna 71.

[0666] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 73, which includes a baseband processor.

[0667] The baseband device 73 may include, for example, at least one baseband board on which multiple chips are disposed, such as... Figure 7 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 75 via a bus interface to call the program in the memory 75 and execute the network device operations shown in the above method embodiment.

[0668] The network-side device may also include a network interface 76, such as a common public radio interface (CPRI).

[0669] Specifically, the network-side device 700 of this embodiment further includes: instructions or programs stored in a memory 75 and executable on a processor 74, wherein the processor 74 calls the instructions or programs in the memory 75 to execute. Figure 4 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0670] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described multi-port positioning reference signal differentiation method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0671] The processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0672] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described multi-port positioning reference signal differentiation method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0673] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0674] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described multi-port positioning reference signal differentiation method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0675] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0676] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0677] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A positioning reference signal port differentiation method, characterized in that, Comprise: The communication node distinguishes a plurality of positioning reference signal ports in the following manner: A third distinguishing manner based on resource element (RE) offset; Wherein different positioning reference signal ports or positioning reference signal port groups or CDM port groups are respectively mapped to different RE offsets; The communication node distinguishes a plurality of positioning reference signal ports in the third distinguishing manner based on RE offset, and further comprises: the communication node determines the correspondence between the positioning reference signal port or the positioning reference signal port group or the CDM port group and the RE offset according to at least one of the first rule agreed by the protocol, the first indication information sent by other nodes and the selection of the communication node; Wherein the first rule agreed by the protocol comprises: a plurality of positioning reference signal ports or positioning reference signal port groups or CDM port groups are equally distributed or adjacent distributed on the resource elements in the comb structure.

2. The method of claim 1, wherein, The communication node further distinguishes a plurality of positioning reference signal ports in at least one of the following distinguishing manners: A first distinguishing manner based on cyclic shift; A second distinguishing manner based on frequency domain orthogonal code; A fourth distinguishing manner based on orthogonal frequency division multiplexing (OFDM) symbol position; A fifth distinguishing manner based on positioning reference signal generation sequence.

3. The method of claim 2, wherein, The cyclic shift corresponding to the positioning reference signal port is related to at least one of the following parameters: Maximum cyclic shift number; Initial cyclic shift; Comb structure size; Relative RE offset; Positioning reference signal resource symbol number; Positioning reference signal resource symbol index; Orthogonal code.

4. The method of claim 2, wherein, If the first distinguishing manner is used to distinguish a plurality of positioning reference signal ports, different positioning reference signal ports correspond to different cyclic shifts.

5. The method of claim 4, wherein, The different positioning reference signal ports are different positioning reference signal ports of a sending node, or different positioning reference signal ports in a positioning reference signal group, or different positioning reference signal ports in a CDM port group.

6. The method of claim 2, wherein, The communication node distinguishes a plurality of positioning reference signal ports of a sending node by cyclic shift, and further comprises: The communication node determines the correspondence between the positioning reference signal port and the cyclic shift according to at least one of the protocol agreement, the indication of other nodes and the selection of the communication node.

7. The method of claim 2, wherein, If the second distinguishing manner is used to distinguish a plurality of positioning reference signal ports, different positioning reference signal ports correspond to different frequency domain orthogonal codes.

8. The method of claim 7, wherein, The communication node distinguishes a plurality of positioning reference signal ports by frequency domain orthogonal code, and further comprises: The communication node determines the correspondence between the positioning reference signal port and the frequency domain orthogonal code according to at least one of the protocol agreement, the indication of other nodes and the selection of the communication node.

9. The method of claim 1, wherein: The RE offset indicated in the first indication information is the RE offset of the positioning reference signal port or the positioning reference signal port group or the CDM port group; Or The first indication information indicates: RE offset and port RE offset, and the port RE offset is the offset value of the positioning reference signal port or the positioning reference signal port group or the CDM port group relative to the RE offset.

10. The method of claim 9, wherein, The size of the port RE offset is 0 wherein, is the comb structure size.

11. The method of claim 1, wherein, The multiple positioning reference signal ports or positioning reference signal port groups or CDM port groups are equally spaced and distributed on the resource elements in the comb structure, including: The multiple positioning reference signal ports or positioning reference signal port groups or CDM port groups are equally spaced and uniformly distributed on the resource elements in the comb structure.

12. The method of claim 1, wherein, The positioning reference signal ports or positioning reference signal port groups or CDM port groups mapped on different RE offsets correspond to respective positioning reference signal generation sequence values.

13. The method of claim 2, wherein, The OFDM symbol positions include at least one of: OFDM symbol positions in the same time slot; OFDM symbol positions in different time slots.

14. The method of claim 13, wherein, The communication node distinguishes the multiple positioning reference signal ports of the sending node through the OFDM symbol positions, including: The communication node determines the correspondence between the positioning reference signal ports or positioning reference signal port groups or CDM port groups and the OFDM symbol positions according to at least one of the second rule agreed by the protocol, second indication information sent by other nodes, and selection of the communication node.

15. The method of claim 14, wherein, The second indication information indicates the starting position of the OFDM symbol in each time slot and / or the starting position of the time slot, which is related to the positioning reference signal port or positioning reference signal port group or CDM port group.

16. The method of claim 14, wherein, The second rule agreed by the protocol includes one of: In one time slot, different positioning reference signal ports or positioning reference signal port groups or CDM port groups occupy the same number of positioning reference signal symbols, and the symbols are adjacent or differ by the same symbol interval, and the multiple positioning reference signal ports or positioning reference signal port groups or CDM port groups are mapped according to the port index or positioning reference signal port group index or CDM port group index arrangement rule; Different positioning reference signal ports or positioning reference signal port groups or CDM port groups cross time slots, occupy the same number of positioning reference signal symbols, and the occupied time slots are adjacent or differ by the same time slot interval, and the multiple positioning reference signal ports or positioning reference signal port groups or CDM port groups are mapped according to the port index or positioning reference signal port group index or CDM port group index arrangement rule.

17. The method of claim 2, wherein, The communication node distinguishes the multiple positioning reference signal ports of the sending node through the positioning reference signal generation sequence, including: The communication node determines the correspondence between the positioning reference signal ports and the positioning reference signal generation sequence generation parameter initial value according to at least one of the rule agreed by the protocol, indication of other nodes, and selection of the communication node.

18. The method of claim 17, wherein, The positioning reference signal generation sequence generation parameter initial value is related to at least one of the following information of the positioning reference signal port: Positioning reference signal port index; Positioning reference signal port group index; CDM port group index; Positioning reference signal port index in the positioning reference signal port group; Positioning reference signal port index in the CDM port group; Number of positioning reference signal ports; Number of positioning reference signal port groups; Number of CDM port groups; Number of CDM port groups in the positioning reference signal port group; Number of positioning reference signal ports in the CDM port group; Number of positioning reference signal ports in the positioning reference signal port group.

19. The method of claim 18, wherein, The positioning reference signal port index is one of the following: The positioning reference signal port index of the positioning reference signal sending node; The positioning reference signal port index within the positioning reference signal port group; The positioning reference signal port index within the CDM port group.

20. The method of claim 19, wherein, The positioning reference signal port index is the positioning reference signal port index of the positioning reference signal sending node, and in the case that the configuration of the positioning reference signal port includes the configuration of the positioning reference signal port group and / or the CDM port group, the positioning reference signal port index is determined by the cumulative count of the positioning reference signal port index in different positioning reference signal port groups and / or CDM port groups.

21. The method of claim 20, wherein, The positioning reference signal port index is related to at least one of the following information: The number of positioning reference signal port groups; The number of positioning reference signal ports within each positioning reference signal port group; The positioning reference signal port index within each positioning reference signal port group; The positioning reference signal port group index; The CDM port group index within the positioning reference signal port group; The number of CDM port groups within each positioning reference signal port group; The number of positioning reference signal ports within each CDM port group; The positioning reference signal port index within each CDM port group.

22. The method of claim 17, wherein, The correspondence between the positioning reference signal port and the initial value of the positioning reference signal generation sequence generation parameter is enabled by a preset parameter.

23. The method of claim 22, wherein, The communication node distinguishes multiple positioning reference signal ports of the sending node by positioning reference signal generation sequences, including: When the preset parameter is indicated, enable the correspondence between the positioning reference signal port and the initial value of the positioning reference signal generation sequence generation parameter, and use the first initial value calculation formula to obtain the positioning reference signal generation sequence; When the preset parameter is not indicated, use the second initial value calculation formula to obtain the positioning reference signal generation sequence; Wherein, the first initial value calculation formula is related to the positioning reference signal port.

24. The method of claim 17, wherein, The communication node distinguishes multiple positioning reference signal ports of the sending node by positioning reference signal generation sequences, including: When the number of positioning reference signal ports is greater than 1, enable the correspondence between the positioning reference signal port and the initial value of the positioning reference signal generation sequence generation parameter, and use the first initial value calculation formula to obtain the positioning reference signal generation sequence; When the number of positioning reference signal ports is 1, use the second initial value calculation formula to obtain the positioning reference signal generation sequence; Wherein, the first initial value calculation formula is related to the positioning reference signal port.

25. The method of claim 2, wherein, The communication node distinguishes multiple positioning reference signal ports using the third distinguishing method and / or the fourth distinguishing method, including: The communication node distinguishes the multiple positioning reference signal ports by different CDM port groups, wherein the positioning reference signal ports within the same CDM port group occupy the same time-frequency position.

26. The method of claim 25, wherein, The communication node distinguishes the multiple positioning reference signal ports by different CDM port groups, including: The communication node uses the first distinguishing method, the second distinguishing method, and / or the fifth distinguishing method to distinguish the positioning reference signal ports within the same CDM port group.

27. The method of any one of claims 26, wherein, The communication node distinguishes the multiple positioning reference signal ports through different CDM port groups, including: The communication node sorts indexes of the CDM port groups in ascending order in the order of frequency domain first and time domain second, and distinguishes different CDM port groups according to the sorting result.

28. The method of claim 1 or 2, wherein, The communication node distinguishes the multiple positioning reference signal ports by using the following distinguishing manners, and the method further includes: The communication node determines, according to the protocol agreement or the third indication information sent by the other communication node, that the time-frequency resources occupied by the target positioning reference signal port in the multiple positioning reference signal ports are not shared with other positioning reference signal ports.

29. The method of claim 28, wherein, The third indication information includes identification information of the target positioning reference signal port, and the identification information includes at least one of the following: a sending node identifier, a positioning reference signal resource set ID, a positioning reference signal resource ID list, a positioning reference signal resource ID, a positioning reference signal port index, a positioning reference signal port list, a positioning reference signal port group index, and a CDM port group index.

30. The method of claim 28, wherein The target positioning reference signal port is a positioning reference signal port with the highest measurement priority corresponding to the sending node. Or The target positioning reference signal port is a reference positioning reference signal port.

31. The method of claim 1 or 2, wherein, The communication node distinguishes the multiple positioning reference signal ports by using the following distinguishing manners, and the method further includes: The communication node determines the distinguishing manner according to at least one of the number of positioning reference signal ports, the comb structure size, and the number of symbols.

32. The method of claim 31, wherein, The communication node determines the distinguishing manner according to the comb structure size, including: The communication node determines the distinguishing manner under each comb structure size according to at least one of the protocol agreement or the indication of the other communication node.

33. The method of claim 32, wherein, The communication node determines the distinguishing manner corresponding to each comb structure size according to at least one of the protocol agreement or the indication of the other communication node, including: The communication node determines the number of positioning reference signal ports that can be used for at least one of the distinguishing manners under each comb structure size according to at least one of the protocol agreement or the indication of the other communication node.

34. A multi-port positioning reference signal discrimination apparatus, comprising: including: The distinguishing module is configured to distinguish the multiple positioning reference signal ports by using the following distinguishing manner: a third distinguishing manner based on resource element (RE) offset. Different positioning reference signal ports or positioning reference signal port groups or CDM port groups are respectively mapped to different RE offsets. The distinguishing module is further configured to determine the correspondence between the positioning reference signal port or the positioning reference signal port group or the CDM port group and the RE offset according to at least one of a first rule agreed by a protocol, first indication information sent by the other node, and selection of the communication node. The first rule agreed by the protocol includes that the multiple positioning reference signal ports or the positioning reference signal port groups or the CDM port groups are equally distributed or adjacently distributed on resource elements in the comb structure.

35. A communications device, characterized by A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to perform steps of the method of claim 1 to 33.

36. A readable storage medium characterized by, A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to perform steps of the method of claim 1 to 33.

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