Method for enabling data communication with wireless device, related network node and related wireless device

Abstract

A method performed by a network node for enabling data communication with a wireless device is disclosed. The method includes transmitting a configuration of a data-embedded phase tracking reference signal (PTRS) between a network node and a wireless device. The configuration enables the wireless device to retrieve data embedded in the PTRS, and / or to transmit the PTRS with embedded data.

Description

Technical Field

[0001] This disclosure relates to the field of wireless communication. Specifically, it relates to methods for implementing data communication with wireless devices, related network nodes, and related wireless devices. Background Technology

[0002] In new radio (NR) systems, there are many types of reference signals. One type of reference signal is the phase tracking reference signal (PTRS). The PTRS serves the purpose of enabling the receiver device to track the common phase offset (CPO) between the transmitter and receiver devices.

[0003] However, there is room for improvement in PTRS design to enhance system capacity. Summary of the Invention

[0004] PTRS does not imply channel estimation used in the data demodulation stage. For example, this relies on the demodulation reference signal (DMRS). This allows the use of any format of PTRS, as long as the ability to track CPO is maintained. Resource elements dedicated to the reference symbol allow estimation of both a phase and an amplitude value, but the resource elements occupied by PTRS are only used for its phase estimation capability. In other words, PTRS can be considered "underutilized" because it is not used for amplitude estimation. This indicates that PTRS wastes resources to some extent by not applying amplitude estimation.

[0005] Therefore, there is a need for network nodes, wireless devices, and methods for enabling data communication with wireless devices, which can mitigate, reduce, or resolve existing shortcomings and embed data (e.g., user data and / or control data) into PTRS to enhance the overall capacity of the system with minimal impact on CPO tracking capabilities.

[0006] A method for enabling data communication with a wireless device, performed by a network node, is disclosed. The method includes configuring a phase tracking reference signal (PTRS) with embedded data to be transmitted between the network node and the wireless device. This configuration enables the wireless device to retrieve data embedded in the PTRS and / or transmit the PTRS with embedded data.

[0007] In addition, a network node is provided, which includes memory circuitry, processor circuitry, and a wireless interface, wherein the network node is configured to perform any of the methods disclosed herein and associated with the network node.

[0008] The advantage of this disclosure is that the disclosed method and network node can utilize the amplitude portion of the PTRS to carry data, such as user data and / or control data. This enables the capacity of the wireless communication system to be enhanced while maintaining phase tracking. In other words, this disclosure allows for improved throughput performance by embedding data in the PTRS that can be retrieved by a receiver device using the publicly disclosed configuration of the PTRS and / or transmitted by a network node using the publicly disclosed configuration of the PTRS.

[0009] A method for enabling data communication with a wireless device, performed by a wireless device, is disclosed. The method includes configuring a phase tracking reference signal (PTRS) for transmitting embedded data. This configuration enables the wireless device to retrieve data embedded in the PTRS and / or transmit the PTRS containing the embedded data.

[0010] In addition, a wireless device is provided, including memory circuitry, processor circuitry, and a wireless interface, wherein a network node is configured to perform any of the methods disclosed herein and associated with the network node.

[0011] The advantage of this disclosure is that the disclosed method and wireless apparatus allow for PTRS communication with embedded data, for example, in the uplink, downlink, and / or sidelink. This enables increased throughput while maintaining phase tracking. Attached Figure Description

[0012] The above and other features and advantages of this disclosure will become apparent to those skilled in the art from the following detailed description of examples of the disclosure with reference to the accompanying drawings, in which: Figure 1 This is a diagram illustrating an example wireless communication system including an example network node and an example wireless device according to the present disclosure. Figures 2A to 2B This is a graph showing PTRS in terms of time and frequency. Figures 3A to 3B This is a signaling diagram illustrating an example embodiment of the present disclosure. Figure 4 A signaling diagram of an example implementation of this disclosure for a side link is shown. Figure 5 A flowchart is shown illustrating an example method for implementing data communication with a wireless device, executed in a network node of a wireless communication system according to the present disclosure. Figure 6 This is a flowchart illustrating an example method for implementing data communication with a wireless device, performed in a wireless device according to the present disclosure. Figure 7 This is a block diagram illustrating an example network node according to this disclosure. Figure 8This is a block diagram illustrating an example wireless device according to the present disclosure, and Figures 9A to 9B A graph showing example numerical results according to this disclosure is provided. Detailed Implementation

[0013] Various examples and details are described below with reference to the accompanying drawings (where applicable). It should be noted that the drawings may be drawn to scale or not to scale, and throughout the drawings, elements with similar structures or functions are indicated by the same reference numerals. It should also be noted that the drawings are intended only to aid in the description of examples. They are not intended as an exhaustive description of this disclosure or as a limitation on the scope of this disclosure. Furthermore, the examples shown need not possess all the aspects or advantages illustrated. Aspects or advantages described in connection with a particular example are not necessarily limited to that example and can be practiced in any other example, even if not so stated or explicitly described.

[0014] The accompanying drawings are schematic and simplified for clarity, and they only show details that aid in understanding this disclosure, while other details have been omitted. Throughout the text, the same reference numerals are used for the same or corresponding parts.

[0015] Figure 1 This is a diagram illustrating an example wireless communication system 1 according to the present disclosure, including an example network node 400 and an example wireless device 300.

[0016] As discussed in detail herein, this disclosure relates to wireless communication systems 1 that include cellular systems (e.g., 3GPP wireless communication systems such as NR systems).

[0017] The wireless communication system 1 includes a wireless device 300 and / or a network node 400.

[0018] The network nodes disclosed in this document refer to radio access network nodes operating in a radio access network, such as base stations, evolved Node B (eNB), and gNBs in NR. In one or more examples, a RAN node is a functional unit that can be distributed across several physical units.

[0019] In one or more examples, a RAN node is a functional unit that can be distributed across several physical units.

[0020] The wireless communication system 1 described herein may include one or more wireless devices 300, 300A and / or one or more network nodes 400, such as base stations, eNBs, gNBs and / or access points.

[0021] Wireless devices can refer to mobile devices and / or user equipment (UE).

[0022] Wireless devices 300 and 300A are configured to communicate with network node 400 via wireless links (or radio access links) 10 and 10A. Wireless device 300 can be configured to communicate with sidelink wireless devices such as wireless device 300A via wireless link (or radio access link) 11.

[0023] Figures 2A to 2B This is a graph showing PTRS in terms of time and frequency. Figures 2A to 2B In the time-frequency grid, the resource elements of Physical Downlink Control Channel 20 (PDCCH), DMRS 22, and PTRS 23 are shown. Figures 2A to 2B Blank resource elements are resource elements used to carry data such as user data. For example, user data can be carried in the Physical Downlink Shared Channel (PDSCH).

[0024] exist Figure 2A In the time domain, when present, PTRS 23 are continuously placed at a configurable density. In the frequency domain, they repeat at a much smaller density. Figure 2A (Not shown in the image).

[0025] Assume that the channel occupying cross-frequency domain resource elements along DMRS 22 is represented as ,in, This refers to the number of subcarriers allocated. In low Doppler conditions, the channel can be considered as... Figures 2A to 2B The entire duration shown is static. However, due to CPO, the first... Symbols (where, The radio channel in the symbol (where DMRS is located) can be described as ,in, It is CPO. A radio channel described in this way can be considered as a whole channel between the propagation channel and / or the digital part of the receiver and the transmitter (e.g., including, for example, the mismatch of the oscillators at both ends).

[0026] The representative model is In other words, CPO per symbol Rate drift in radians.

[0027] Because PTRS 23 is sparse along the frequency dimension, such as Figures 2A to 2B As shown, channel estimation at subcarriers far from PTRS 23 can rely solely on DMRS 22. For example, a practical channel estimator first uses DMRS 22 to obtain the channel... The estimated value And obtain CPO using PTRS 23 The estimated value And finally obtained The estimated value is .

[0028] Figures 2A to 2B It is shown that PTRS 23 is only used to estimate CPO, and not directly for estimating CPO. PTRS23 can be considered “underutilized” because it is not used for amplitude estimation. Resource elements dedicated to the reference symbol allow for the estimation of both a phase and an amplitude value, but the resource elements occupied by PTRS 23 are used only for their phase estimation capabilities. In other words, this disclosure provides some insights discovered by the inventors: PTRS wastes resources to some extent, such as underutilized resources that could be used for data communication. It is understood that networks need to make trade-offs between CPO estimation (more PTRS) and throughput performance (fewer PTRS). This disclosure addresses this problem to some extent by embedding data into the PTRS.

[0029] A PTRS with embedded data can be viewed as a PTRS that has been modified to embed data (such as user data and / or control data). For example, a PTRS can be modified by encoding data into the amplitude portion of a PTRS symbol (such as by controlling the power of the PTRS).

[0030] Figures 3A to 3B This is a signaling diagram illustrating an example wireless device 300 and an example network node 400, representing an example implementation of this disclosure.

[0031] Figure 3A A signaling diagram between an example wireless device 300 and an example network node 400 in a downlink (such as via an air Uu interface connecting the wireless device 300 and the network node 400) is shown according to this disclosure.

[0032] In some examples, according to this disclosure, the wireless device 300 sends capability signaling 305 to the network node 400, indicating to the network node 400 that the wireless device 300 is capable of receiving / transmitting PTRS with embedded data. In other words, the wireless device 300 indicates to the network node 400 that the wireless device 300 is capable of transmitting and / or receiving data embedded in PTRS.

[0033] In some examples, network node 400 transmits conventional PTRS 306 (such as PTRS without embedded data) to wireless device 300 via physical downlink control channel (PDCCH) and / or physical downlink shared channel (PDSCH).

[0034] Network node 400 sends a PTRS containing embedded data (such as user data and / or control data) to wireless device 300 in configuration 307. This configuration enables wireless device 300 to retrieve the data embedded in the PTRS in the downlink (DL). For example, in the non-periodic configuration 307, the DCI in the PDDCH contains a flag indicating the actual presence of data embedded in the PTRS, and the regular PTRS is used the rest of the time.

[0035] In some examples, network node 400 transmits a PTRS 309 with embedded data. In some examples, the data embedded in the PTRS 309 may be control data and / or user data. For example, this data may be used to assist and / or support the PDCCH and / or PDSCH reception of the wireless device 300. For example, the PTRS with embedded data can assist PDCCH and PDSCH reception by providing control data in the PTRS 309 and by allowing phase tracking. In some examples, the PDSCH data and the data embedded in the PTRS may use the same configuration or different configurations, such as the conventional PDSCH configuration for data symbols disclosed herein and configuration 307 for data embedded in the PTRS.

[0036] In some examples, data embedded in PTRS 309 can be provided in its own transport block or combined with PDSCH data to form a transport block. For example, at higher layers, data streams can be combined into the same transport block. In some examples, this data can be decoded separately. In some examples, this data can belong to different transport blocks.

[0037] The wireless device 300 can then use configuration 307 to retrieve data embedded in the PTRS 309. Configuration 307 may include information indicating the modulation alphabet and / or multiple predetermined amplitude levels. For example, amplitude levels can be considered as the amplitude levels of modulation symbols, such as quantization levels. In other words, for example, the wireless device 300 can use configuration 307 (and thus information about the modulation alphabet and / or predetermined amplitude levels) to retrieve data embedded in the PTRS 309.

[0038] Figure 3B A signaling diagram (such as via an air Uu interface connecting the wireless device 300 and the network node 400) is shown in the uplink according to the present disclosure.

[0039] In some examples, according to this disclosure, the wireless device 300 sends capability signaling 350 to the network node 400, indicating to the network node 400 that the wireless device 300 is capable of receiving and / or transmitting PTRS with embedded data. In other words, the wireless device 300 indicates to the network node 400 that it is capable of transmitting and / or receiving data embedded in PTRS. In some examples, according to this disclosure, the wireless device 300 sends auxiliary information to the network node 400, indicating to the network node 400 that the wireless device 300 is capable of receiving and / or transmitting PTRS with embedded data.

[0040] In some examples, network node 400 receives conventional PTRS 351 (such as PTRS without embedded data) from wireless device 300 via Physical Uplink Control Channel (PUCCH) and / or Physical Uplink Shared Channel (PUSCH).

[0041] Network node 400 transmits PTRS (PTRS with embedded data such as user data and / or control data) to wireless device 300 in configuration 352. This configuration enables wireless device 300 to transmit data embedded in PTRS in the uplink (UL).

[0042] The wireless device 300 can then embed data in PTRS 354 for transmission, allowing network nodes to retrieve the data using configuration 352, which may contain information indicating the modulation alphabet and / or multiple predetermined amplitude levels.

[0043] In some examples, network node 400 receives PTRS 354 containing embedded data from wireless device 300, for example, via PUCCH and PUSCH. For example, in non-periodic configuration 307, scheduling PDDCH 353 may contain DCI, which carries a flag indicating the actual presence of data embedded in PTRS in subsequent UL transmissions, such as PRTS 354.

[0044] Figure 4 A signaling diagram is shown between an example network node 400, an example wireless device 300, and a sidelink wireless device for sidelink communication according to this disclosure.

[0045] In some examples, wireless devices 300 and 300A send their respective capability signaling 404 and 405 to network node 400, indicating to network node 400 that wireless devices 300 and 300A are capable of receiving / transmitting PTRS embedded data according to this disclosure. In other words, wireless devices 300 and 300A indicate to network node 400 their respective capabilities for transmitting and / or receiving data embedded in PTRS.

[0046] In some examples, wireless devices 300, 300A transmit conventional PTRS 406 (such as PTRS without embedded data) to each other in a bidirectional manner via the Physical Side Link Control Channel (PSCCH) and / or Physical Side Link Shared Channel (PSSCH).

[0047] Network node 400 sends corresponding configurations 407 and 408 to wireless devices 300 and 300A for PTRS (PTRS with embedded data such as user data and / or control data) for sidelink. Configuration 407 enables wireless device 300 to transmit and / or receive data embedded in the PTRS sidelink. Configuration 408 enables wireless device 300A to retrieve and / or transmit data embedded in the PTRS sidelink.

[0048] In some examples, wireless devices 300 and 300A transmit embedded data via PTRS 409, for example, via PSCCH and PSSCH. For example, in an aperiodic configuration, aperiodic data transmission embedded in PTRS can be transmitted via, for example, SCI / PSCCH instantaneous signaling, where SCI is an SL control indicator.

[0049] In some examples, network node 400 indicates the presence of PTRS with embedded data to radio device 300 (and optionally to sidelink radio device 300A) via a flag carried in DCI 409A on PDCCH.

[0050] In some examples, as part of sidelink scheduling, wireless device 300 indicates the presence of PTRS embedded in data to wireless device 300A via a flag carried by sidelink control information 409B.

[0051] The wireless device receiving the PTRS 410 can then use configuration 407 or configuration 408 to retrieve the data embedded in the PTRS 410. Configuration 407 or configuration 408 may contain information indicating the modulation alphabet and / or multiple predetermined amplitude levels.

[0052] Figure 5 A flowchart is shown of an example method 100 for implementing data communication with a wireless device, performed by a network node according to this disclosure. The network node is the network node disclosed herein, such as... Figure 1 , Figures 3A to 3B , Figure 4 and Figure 7 Network node 400.

[0053] In one or more example methods, method 100 includes receiving capability signaling from a wireless device in step S102, instructing the wireless device to process PTRS embedded data. This can enable a network node to activate the configuration of PTRS embedded data.

[0054] Method 100 includes configuring a phase tracking reference signal (PTRS) for transmitting embedded data (S104) between a network node and a wireless device. The embedded data PTRS can be a modified PTRS that includes data and still enables phase tracking, e.g., tracking CPO. In other words, the configuration can activate the embedded data PTRS and instruct how to retrieve data from the PTRS. This configuration enables the wireless device to retrieve data embedded in the PTRS and / or transmit the embedded data PTRS. In some examples, the configuration enables the wireless device to decode, retrieve, and / or receive data as part of the PTRS in the DL. In some examples, the configuration enables the wireless device to generate, encode, embed, and / or include and transmit data as part of the PTRS in the UL. In some examples, the configuration enables the wireless device receiving the PTRS to decode, retrieve, and / or receive data as part of the PTRS in a side link. In some examples, such as... Figure 4 As shown, this configuration enables a wireless device to generate, encode, embed, and / or include, and transmit data as part of a PTRS to a sidelink wireless device. For example, the configuration includes information indicating a modulation alphabet and / or multiple predetermined amplitude levels, which can be used by the wireless device to retrieve data embedded in the PTRS and / or transmit the PTRS containing the embedded data. For example, when the wireless device receives a PTRS containing embedded data, it can use this configuration to retrieve the modulation alphabet and / or predetermined amplitude levels to retrieve the data embedded in the PTRS. For example, when the wireless device wants to transmit a PTRS containing embedded data, it can use this configuration to retrieve the modulation alphabet and / or predetermined amplitude levels to encode and / or embed data into the PTRS and transmit the PTRS containing the embedded data.

[0055] In other words, the configuration disclosed herein allows data to be embedded into the unused portion of the PTRS (e.g., the amplitude portion) without significantly affecting the phase tracking characteristics of the PTRS. In other words, the additional data embedded in the PTRS incurs no resource cost, thereby improving spectral efficiency while maintaining phase tracking.

[0056] In one or more example methods, the configuration of the PTRS for transmitting the S104 embedded data includes the configuration of the PTRS for sending the S104A embedded data to the wireless device. For example, this can enable the wireless device to embed data into the PTRS in the UL and retrieve the data in the PTRS in the DL.

[0057] In one or more example methods, the configuration of the PTRS for transmitting the S104 embedded data includes the configuration of the PTRS for receiving the S104B embedded data from the wireless device. It is conceivable that the wireless device transmits the configuration of the PTRS for the embedded data before transmitting the UL embedded data, enabling the network node to retrieve the data from the PTRS.

[0058] In one or more example methods, method 100 includes transmitting a PTRS containing embedded data to a wireless device in step S106. In one or more example methods, the PTRS is capable of phase tracking. For example, the phase tracking properties of the PTRS containing embedded data remain unchanged. In other words, the PTRS can still be used for phase tracking. For example, the phase of the PTRS remains unchanged, while the amplitude is modified due to data embedding. For example, when data is embedded, the PTRS... (Where p is a real positive number representing PTRS power, and x is the phase) becomes as follows: , where 'a' is a positive real value, thus modifying the amplitude. This is due to Figures 9A to 9B The results show that data embedding has a negligible effect on phase tracking.

[0059] In one or more example methods, the PTRS embedded in the data contains real-valued symbols carrying the data. For example, transferring the PTRS from... (Where p is a real positive number representing PTRS power, and x is the phase) Modified to represent as , where 'a' is a positive real-value symbol. It can be understood that the PTRS containing embedded data with real-value symbols carrying the data minimizes or limits the impact of the disclosed technique on the phase of the PTRS.

[0060] The disclosed method, in particular, allows for increased communication capacity between network nodes and wireless devices in both uplink and downlink without affecting phase tracking or at the expense of resource usage.

[0061] In one or more example methods, this configuration includes information indicating a modulation alphabet and / or multiple predetermined amplitude levels. The modulation alphabet can be viewed as an alphabet of a modulation scheme, allowing data to be encoded, generated, and / or retrieved from the PTRS of embedded data. The modulation alphabet can be viewed as selecting equations from it. The set of "a" in the text. A predetermined amplitude level can be considered as a predetermined sample value of the amplitude of a modulation symbol in a finite set of levels, enabling the encoding, generation, and / or retrieval of data from a PTRS containing embedded data. A modulation alphabet and / or multiple predetermined amplitude levels can be used by a wireless device to retrieve data from a PTRS containing embedded data and / or to generate a PTRS containing embedded data for transmission in the UL or side link. For example, amplitude levels are used to map the amplitude of the PTRS to corresponding symbols of a modulation alphabet used to embed data in the PTRS.

[0062] In one or more example methods, the configuration includes a selector flag indicating the modulation alphabet and / or multiple predetermined amplitude levels. For example, the selector flag is a reference indicating multiple predetermined amplitude levels (such as modulation scheme, release number, etc.).

[0063] In one or more example methods, this configuration is part of one of the following: downlink control information (DCI), and / or semi-persistent radio resource control (RRC) scheduling, and / or periodic radio resource control scheduling, and / or media access control (MAC) control elements. For example, the configuration of the PTRS embedding data can be accomplished using DCI, semi-persistent radio resource control scheduling, and / or periodic radio resource control scheduling, and / or media access control control elements. For example, this configuration may be provided during the registration of the wireless device (e.g., via flags), and / or may be set to be periodically active or aperiodically active. In some examples, the wireless device is configured to receive data embedded in the PTRS and to trigger the reception of the data embedded in the PTRS aperiodically, for example, via the PDCCH / DCI. For example, the PTRS symbol of the associated PDSCH is located in some (OFDM) symbols before or after the PDCCH resource itself. For example, the wireless device knows where to find the PTRS, for example, via configuration provided at a lower layer (e.g., via DCI, physical layer, RRC layer, and / or MAC layer). It is conceivable to perform configuration at a layer above the physical layer, and to perform activation of the disclosed modified PTRS at the physical layer (such as via DCI).

[0064] Optionally, the PTRS can be associated with different transmission types or physical channels. In one or more example methods, the configuration indicates that the PTRS embedding the data is associated with a unicast channel, multicast channel, broadcast channel, control channel, and / or shared channel. In one or more example methods, the configuration indicates that the PTRS embedding the data is associated with one or more of the PDSCH channel, PDCCH channel, PUSCH channel, PUCCH channel, SL PSCCH channel, and PSSCH channel. For example, a network node embeds data into a PTRS and transmits the PTRS embedding the data via a PDSCH channel and / or a PDCCH channel. For example, a wireless device embeds data into a PTRS and transmits the PTRS embedding the data via a PUSCH channel, PUCCH channel, SL PSCCH channel, and / or PSSCH channel.

[0065] In one or more example methods, the method includes generating an S105 PTRS by encoding data S105A in the PTRS. For example, at S105A, the data can be encoded using a sequence of symbols with constant total power and / or avoiding transmission of symbols with low amplitude. In one or more example methods, method 100 includes encoding data S105A in the PTRS, including selecting S105AA symbols from a distribution associated with a modulation alphabet, such as a modulation alphabet with a finite cardinality. For example, this distribution is a uniform distribution associated with the modulation alphabet. However, any distribution can be used. In some examples, symbol selection can be performed by selecting symbols from a finite list of symbols, where all symbols in the list are selected with equal probability.

[0066] Figure 6 A flowchart is shown of an example method 200 performed by a wireless device to implement data communication with the wireless device according to the present disclosure. The wireless device is the wireless device disclosed herein, such as... Figure 1 , Figures 3A to 3B , Figure 4 and Figure 8 Wireless device 300 in the middle.

[0067] In one or more example methods, the method includes sending S202 capability signaling to a network node instructing the wireless device to process PTRS embedded data. This corresponds, for example, to... Figure 5 S102 in the middle.

[0068] Method 200 includes configuring a phase tracking reference signal (PTRS) for transmitting embedded data in S204. This configuration enables the wireless device to retrieve data embedded in the PTRS and / or transmit the PTRS containing the embedded data. In other words, this configuration can activate the PTRS containing the embedded data and instruct how to retrieve the data from the PTRS. This corresponds, for example, to... Figure 5 S104 in the middle.

[0069] In some examples, this configuration enables the wireless device to decode, retrieve, and / or receive data as part of the PTRS in the DL. In some examples, this configuration enables the wireless device to generate, encode, embed, and / or include and transmit data as part of the PTRS in the UL. In some examples, this configuration enables the wireless device receiving the PTRS to decode, retrieve, and / or receive data as part of the PTRS in the sidelink. In some examples, such as... Figure 4 As shown, this configuration enables the wireless device to generate, encode, embed, and / or include and transmit data as part of PTRS to the sidelink wireless device in the sidelink.

[0070] In one or more example methods, transmitting the S204 configuration includes from a network node (such as...) Figures 3A to 3B (as shown) and / or from sidelink wireless devices (such as Figure 4 (As shown) receiving S204A, this configuration, for example, enables the wireless device to retrieve data from the PTRS embedded with data. This corresponds, for example, to... Figure 5 S104A in it.

[0071] In one or more example methods, transmitting the S204 configuration includes sending the S204B configuration to the network node and / or sidelink radio device, for example, enabling the network node and / or sidelink radio device to retrieve data from the PTRS with embedded data. This corresponds, for example, to... Figure 5 S104B in the example.

[0072] In one or more example methods, method 200 includes a PTRS that transmits the embedded data of S206. In one or more example methods, the PTRS is capable of phase tracking.

[0073] In one or more example methods, the PTRS transmitting S206 embedded data includes a PTRS receiving S206A embedded data. In one or more example methods, the PTRS receiving S206A embedded data includes a PTRS from a network node ( Figure 3B (as shown) or from a sidelink wireless device ( Figure 4 (As shown in the example) PTRS that receives S206AA embedded data. In one or more example methods, the PTRS that transmits S206 embedded data includes retrieving S207 (such as decoded, demodulated) data from the PTRS based on this configuration.

[0074] In one or more example methods, the PTRS for transmitting S206 embedded data includes the PTRS for sending S206B embedded data to network nodes and / or sidelink radio devices. This corresponds, for example, to... Figure 5S106 is used to send PTRS to network nodes.

[0075] In one or more example methods, the PTRS embedded in the data contains real-valued symbols carrying the data. For example, transferring the PTRS from... (Where p is a real positive number representing PTRS power, and x is the phase) Modified to represent as , where a is a positive real-valued symbol, for example, selected from a modulation alphabet with a finite number of bases. It can be understood that the PTRS containing embedded data with real-valued symbols carrying the data makes the disclosed technique have no effect on the phase of the PTRS.

[0076] In one or more example methods, the configuration includes information indicating a modulated alphabet and / or multiple predetermined amplitude levels. In one or more example methods, the configuration includes selector flags indicating a modulated alphabet and / or multiple predetermined amplitude levels.

[0077] In one or more example methods, the configuration is part of one of the following: downlink control information, and / or semi-persistent radio resource control scheduling, and / or periodic radio resource control scheduling, and / or media access control control elements.

[0078] In one or more example methods, this configuration instructs the PTRS with embedded data to be associated with a unicast channel, multicast channel, broadcast channel, control channel, and / or shared channel.

[0079] In one or more example methods, this configuration indicates that the PTRS of the embedded data is associated with one or more of the PDSCH channel, PDCCH channel, PUSCH channel, PUCCH channel, PSCCH channel, and PSSCH channel.

[0080] In one or more example methods, method 200 includes generating an S205 PTRS by encoding data S205 in the PTRS. For example, the data can be encoded using a sequence of symbols with constant power and / or avoiding transmission of symbols with low amplitudes. In one or more example methods, method 200 includes encoding the data in the PTRS, including selecting symbols from a distribution associated with a modulation alphabet (such as a modulation alphabet with a finite cardinality). For example, this distribution is a uniform distribution associated with the modulation alphabet. However, any distribution can be used. In some examples, symbol selection can be performed by selecting symbols from a finite list of symbols, where all symbols in the list are selected with equal probability. This corresponds, for example, to... Figure 5 S105 in the middle.

[0081] Figure 7A block diagram of an example network node 400 according to this disclosure is shown. Network node 400 includes memory circuitry 401, processor circuitry 402, and wireless interface 403. Network node 400 can be configured to perform... Figure 5 Any method disclosed herein. In other words, network node 400 can be configured to enable data communication with wireless devices.

[0082] Network node 400 is configured to communicate with wireless devices (such as wireless devices 300, 300A disclosed herein) using a wireless communication system.

[0083] The wireless interface 403 is configured to communicate wirelessly via a wireless communication system, such as a 3GPP system, such as a 3GPP system that supports one or more of the following: New Radio (NR), Long Term Evolution (LTE), Narrowband IoT (NB-IoT), and Long Term Evolution-Enhanced Machine Type Communications (LTE-M), and a 3GPP system operating on licensed or unlicensed frequency bands.

[0084] Network node 400 is configured to transmit (e.g., via wireless interface 403) a phase tracking reference signal (PTRS) with embedded data between the network node and a wireless device. This configuration enables the wireless device to retrieve the data embedded in the PTRS and / or transmit the PTRS with embedded data.

[0085] Processor circuit 402 is optionally configured to execute Figure 5 Any operation disclosed herein (such as any one or more of S102, S104A, S104B, S105, S105A, S105B, S106). The operation of network node 400 may be embodied in the form of an executable logic routine (e.g., lines of code, software program, etc.) stored on a non-transitory computer-readable medium (e.g., memory circuitry 401) and executed by processor circuitry 402.

[0086] Furthermore, the operation of network node 400 can be considered as a method configured to be performed by network node 400. Moreover, although the described functions and operations can be implemented in software, such functions can also be performed via dedicated hardware or firmware, or a combination of hardware, firmware, and / or software.

[0087] Memory circuit 401 may be one or more of a buffer, flash memory, hard disk drive, removable media, volatile memory, non-volatile memory, random access memory (RAM), and other suitable devices. In a typical arrangement, memory circuit 401 may include non-volatile memory for long-term data storage and volatile memory used as system memory for processor circuit 402. Memory circuit 401 may exchange data with processor circuit 402 via a data bus. Control lines and an address bus may also exist between memory circuit 401 and processor circuit 402. Figure 7 (Not shown in the image). The memory circuit 401 is considered a non-transitory computer-readable medium.

[0088] The memory circuit 401 can be configured to store the configuration of the PTRS embedded in the data, the PTRS, the real-valued symbols, the information indicating the modulation alphabet, the multiple predetermined amplitude levels, the data, and / or the symbols from the distribution associated with the modulation alphabet in a portion of the memory.

[0089] Figure 8 A block diagram of an example wireless device 300 according to the present disclosure is shown. Wireless devices 300 and 300A include memory circuitry 301, processor circuitry 302, and a wireless interface 303. Wireless device 300 can be configured to perform… Figure 6 Any method disclosed herein. In other words, the wireless device 300 can be configured to perform data communication with the wireless device.

[0090] Wireless devices 300 and 300A are configured to transmit (e.g., via wireless interface 303) a phase tracking reference signal (PTRS) with embedded data. This configuration enables the wireless devices to retrieve data embedded in the PTRS and / or transmit the PTRS with embedded data.

[0091] The wireless interface 303 is configured to communicate wirelessly via a wireless communication system, such as a 3GPP system, such as a 3GPP system that supports one or more of the following: New Radio (NR), Long Term Evolution (LTE), Narrowband IoT (NB-IoT), and Long Term Evolution-Enhanced Machine Type Communications (LTE-M), and a 3GPP system operating on licensed or unlicensed frequency bands.

[0092] Wireless devices 300 and 300A are optionally configured to perform Figure 6Any operation disclosed herein (such as any one or more of S202, S204A, S204B, S205, S205A, S206, S206A, S206AA, S206B, S207). The operation of wireless devices 300 and 300A may be embodied in the form of executable logic routines (e.g., lines of code, software programs, etc.) stored on a non-transitory computer-readable medium (e.g., memory circuitry 301) and executed by processor circuitry 302.

[0093] Furthermore, the operation of wireless devices 300 and 300A can be considered as a method configured to be performed by wireless devices 300 and 300A. Moreover, although the described functions and operations can be implemented in software, such functions can also be performed via dedicated hardware or firmware, or a combination of hardware, firmware, and / or software.

[0094] The memory circuit 301 may be one or more of a buffer, flash memory, hard disk drive, removable media, volatile memory, non-volatile memory, random access memory (RAM), and other suitable devices. In a typical arrangement, the memory circuit 301 may include non-volatile memory for long-term data storage and volatile memory used as system memory for the processor circuit 302. The memory circuit 301 may exchange data with the processor circuit 302 via a data bus. Control lines and an address bus may also exist between the memory circuit 301 and the processor circuit 302. Figure 8 (Not shown in the image). The memory circuit 301 is considered a non-transitory computer-readable medium.

[0095] The memory circuit 301 can be configured to store information such as the configuration of the PTRS embedded in the data, the PTRS, the real-valued symbol carrying the data, information indicating the modulation alphabet and / or multiple predetermined amplitude levels in a portion of the memory.

[0096] Figures 9A to 9B A graph showing example numerical results according to this disclosure is provided.

[0097] To demonstrate the ability of PTRS with embedded data to maintain phase tracking and enhance rate or throughput, the following is provided: [The following is a partial translation of the original text, which is not possible without further context.] This represents the PTRS at any resource element. For standardization purposes, without loss of generality, it is assumed that... For simplicity, the disclosed technology can be considered as a proposal to use... To replace PTRS ,in, It is an information symbol that carries data to be demodulated at a receiver (e.g., a wireless device in the downlink, a network node in the uplink, and / or a sidelink wireless device in the sidelink).

[0098] In some examples, in order to maintain phase tracking capability, the symbol It is a real value, and It is a positive number. In other words, for example, With Same phase. To quantify the data transmission capacity per PTRS, select... For example: (1) in, express and The uniform probability density function between them, where A1 and A2 represent the signs. Alphabet boundaries In some examples, Transmission power (e.g., The normalization of the expected power is expressed as, for example: (2) In some examples, Set to 1, for a given By solving the cubic equation: You can find In other words, for example, one can choose accordingly. This means It is possible The scope of the study was modified to examine the trade-off between data transmission and CPO tracking capabilities. In other words, a choice or balance could be made. and To obtain an average power of 1. For example, when When it is 1, It is 1, and Always 1, no data is transmitted in this state. For example, with... This reduction allows for the embedding of more data in PTRS for transmission. For example, when When the value is 0, a large amount of data can be sent, but for... In the PTRS prepared in time, phase tracking is degraded. In some examples, The uniform constellation followed represents the rate achieved by a discrete pulse amplitude modulation (PAM) type constellation. However, any distribution and modulation alphabet can be used.

[0099] It is assumed that CPO can be tracked with the same accuracy as a standard PTRS without embedded data from the publicly disclosed embedded data PTRS. This assumption is based on... Figures 9A to 9B Support. In other words, Figures 9A to 9BThis demonstrates that the assumption is valid. For simplicity, it is assumed that the channel can be perfectly estimated using standard PTRS, i.e., For example, perfectly estimating the channel at the PTRS location, and the channel model for any PTRS is, for example: (3) in, It is the channel at the PTRS location, and It is complex Gaussian noise with a variance of 1 ( Absorbed (in Chinese). For example, Since this is known from DMRS, the focus is on tracking the phase. For example, the channel. It is assumed that the variance is The zero-mean complex Gaussian, which leads to, for example: ,in, It is a complex Gaussian with variance of 1. Because it is assumed... Given this, the PTRS position can be rotated accordingly. The average SNR at the location is used to obtain, for example: (4) in, And therefore it is Rayleigh distributed (in terms of...) After scaling, that is, It has scaling parameters (Rayleigh distribution). For a given Available rates (e.g., throughput, and / or data transmissibility) are defined, for example, in natural units of information (nat) used per channel: (5) After several transformations, p can be expressed as, for example: (6) In some examples, for a given value The rate per PTRS right Give the average, for example: (7) Figures 9A to 9B The average rate per PTRS is shown. The result.

[0100] In some examples, such as Figures 9A to 9B As shown, the expectation can be evaluated by Monte Carlo calculation, and an estimator for phase tracking with the same PTRS for embedded data and non-embedded data and without knowledge of changes on the PTRS is used.

[0101] To demonstrate that CPO tracking capability has not significantly degraded, it is assumed that... Each PTRS is in the time domain. For example, This could be, for example, in the order of 3 to 10. In the... The model received at each PTRS is, for example:

[0102] The CPO tracking estimator assumes the standard PTRS, i.e. (No embedded data) This means Therefore, it is possible to estimate based on this model. ,For example: (8) You can use a maximum likelihood (ML) estimator and provide that estimate, for example: (9) Because the model assumed by the estimator is inconsistent with the true model, the estimation quality of equation (9) may deteriorate for the PTRS of the embedded data disclosed in this paper. Note that the quantity It is known from the DMRS estimation stage. Figures 9A to 9B The root mean square (RMS) error is shown. The results in this regard, including the channel The average SNR (including noise) is assumed to be a given value of the average SNR. .

[0103] Figure 9A It shows dB and Numerical results under the given conditions. The x-axis shows the values. Curve 52 (axis on the left) shows the traversal rate that can be embedded into each PTRS. Curve 54 (axis on the right) shows the RMS error loss of the CPO slope estimate compared to the unmodified PTRS.

[0104] Figure 9A The results show that the RMS error loss is quite small – less than 0.7 dB for the entire curve.

[0105] With a tolerance loss of 0.2 dB, select It can make This produces a rate of 0.35 nat per PTRS. As a reference point, at this... At this value, the traversal rate per data resource element is approximately 2.01 nat.

[0106] The results show that each PTRS resource element can carry approximately 17% of the data carried by the resource elements allocated for data transmission, and since the RMS error remains negligible, the impact on phase tracking is not significant.

[0107] Figure 9A This demonstrates that if the phase tracking capability is good enough, more data can be embedded, for example... .

[0108] Figure 9B It shows the relationship with Figure 9A The same experiment, but with average SNR dB. Curve 56 (axis on the left) shows the traversal rate that can be embedded into each PTRS. Curve 58 (axis on the right) shows the RMS error loss of the CPO slope estimate compared to the unmodified PTRS.

[0109] and Figure 9A The same conclusion still applies: data can be embedded into the PTRS without any significant adverse effect on the RMS error of the CPO tracking estimate. In other words, at lower SNRs, embedding data into the PTRS performs well and does not significantly affect phase tracking capability. The results are the same for both higher and lower SNRs. In other words, the disclosed technique is robust to SNR variations.

[0110] Examples of methods and products (network nodes and wireless devices) based on this disclosure are illustrated in the following: Item 1. A method (100) performed by a network node for implementing data communication with a wireless device, the method comprising: A configuration for transmitting (S104) a phase tracking reference signal (PTRS) with embedded data between a network node and a wireless device, wherein the configuration enables the wireless device to retrieve data embedded in the PTRS and / or transmit the PTRS with embedded data.

[0111] Item 2. The method according to Item 1, the method comprising: Transmit (S106) PTRS containing embedded data to the wireless device.

[0112] Item 3. The method according to any one of the preceding items, wherein the PTRS of the embedded data includes real-valued symbols carrying the data.

[0113] Item 4. The method according to any one of the preceding items, wherein the configuration includes information indicating a modulation alphabet and / or a plurality of predetermined amplitude levels.

[0114] Item 5. The method according to any one of the preceding items, wherein the configuration includes selector flags indicating a modulation alphabet and / or a plurality of predetermined amplitude levels.

[0115] Item 6. The method according to any one of the preceding items, wherein the configuration is a part of: downlink control information, and / or semi-persistent radio resource control scheduling, and / or periodic radio resource control scheduling, and / or media access control control elements.

[0116] Item 7. The method according to any one of the preceding items, wherein the PTRS is capable of phase tracking.

[0117] Item 8. The method according to any one of the preceding items, the method comprising: receiving (S102) capability signaling from the wireless device instructing the wireless device to process PTRS embedded data.

[0118] Item 9. The method according to any one of the preceding items, wherein the configuration indicates that the PTRS embedding the data is associated with a unicast channel, a multicast channel, a broadcast channel, a control channel, and / or a shared channel.

[0119] Item 10. The method according to any one of the preceding items, wherein the configuration indicates that the PTRS of the embedded data is associated with one or more of the PDSCH channel, PDCCH channel, PUSCH channel, PUCCH channel, SL PSCCH channel and PSSCH channel.

[0120] Item 11. The method according to any one of the preceding items, wherein the method comprises: generating (S105)PTRS by encoding (S105A) data in PTRS.

[0121] Item 12. The method according to Item 11, wherein encoding the data (S105A) in the PTRS includes: selecting (S105B) symbols from a distribution associated with the modulated alphabet.

[0122] Item 13. The method according to any one of the preceding items, wherein transmitting (S104) the configuration includes: sending (S104A) the configuration to a wireless device.

[0123] Item 14. The method according to any one of the preceding items, wherein transmitting (S104) the configuration includes receiving (S104B) the configuration from a wireless device.

[0124] Item 15. A method (200) performed by a wireless device for realizing data communication with the wireless device, the method comprising: The configuration of transmitting (S204) the phase tracking reference signal PTRS embedded with data, wherein the configuration enables the wireless device to retrieve data embedded in the PTRS and / or transmit the PTRS embedded with data.

[0125] Item 16. The method according to Item 15, wherein transmitting (S204) the configuration includes receiving (S204A) the configuration from a network node or from a sidelink wireless device.

[0126] Item 17. The method according to any one of items 15 to 16, wherein transmitting (S204) the configuration includes: sending (S204B) the configuration to a network node and / or to a sidelink wireless device.

[0127] Item 18. The method according to any one of items 15 to 17, the method comprising: Transmit (S206) the embedded data via PTRS.

[0128] Item 19. The method according to Item 18, wherein transmitting (S206) the embedded data PTRS includes: receiving (S206A) the embedded data PTRS; and wherein the method includes: Based on this configuration, data is retrieved from PTRS (S207).

[0129] Item 20. The method according to Item 19, wherein receiving (S206A) embedded data by a PTRS includes receiving (S206AA) embedded data by a PTRS from a network node or from a sidelink radio device.

[0130] Item 21. The method according to any one of items 18 to 20, wherein transmitting (S206) the embedded data PTRS comprises: sending (S206B) the embedded data PTRS to a network node and / or to a sidelink wireless device.

[0131] Item 22. The method according to any one of items 15 to 21, wherein the PTRS containing the embedded data includes real-value symbols carrying the data.

[0132] Item 23. The method according to any one of items 15 to 22, wherein the configuration includes information indicating a modulation alphabet and / or a plurality of predetermined amplitude levels.

[0133] Item 24. The method according to any one of items 15 to 23, wherein the configuration includes selector flags indicating a modulation alphabet and / or a plurality of predetermined amplitude levels.

[0134] Item 25. The method according to any one of items 15 to 24, wherein the configuration is a part of downlink control information, and / or semi-persistent radio resource control scheduling, and / or periodic radio resource control scheduling, and / or media access control control elements.

[0135] Item 26. The method according to any one of items 15 to 25, wherein the PTRS is capable of phase tracking.

[0136] Item 27. The method according to any one of items 15 to 26, the method comprising: sending (S202) capability signaling to a network node instructing the wireless device to process PTRS embedded data.

[0137] Item 28. The method according to any one of items 15 to 27, wherein the configuration indicates that the PTRS embedding the data is associated with a unicast channel, a multicast channel, a broadcast channel, a control channel, and / or a shared channel.

[0138] Item 29. The method according to any one of items 15 to 28, wherein the configuration indicates that the PTRS of the embedded data is associated with one or more of the PDSCH channel, PDCCH channel, PUSCH channel, PUCCH channel, SL PSCCH channel and PSSCH channel.

[0139] Item 30. The method according to any one of items 15 to 29, wherein the method comprises: generating (S205)PTRS by encoding (S205A) data in PTRS.

[0140] Item 31. A network node including memory circuitry, processor circuitry, and a wireless interface, wherein the network node is configured to perform any of the methods according to any one of items 1 to 14.

[0141] Item 32. A wireless device comprising memory circuitry, processor circuitry, and a wireless interface, wherein the transmitting means is configured to perform any method according to any one of items 15 to 30.

[0142] The use of terms such as "first," "second," "third," and "fourth," "level one," "level two," and "level three," etc., does not imply any specific order, but is included to identify individual elements. Furthermore, the use of terms such as "first," "second," "third," and "fourth," "level one," "level two," and "level three," etc., does not indicate any order or importance, but is used to distinguish one element from another. Note that the terms "first," "second," "third," and "fourth," "level one," "level two," and "level three," etc., here and elsewhere, are used solely for labelling purposes and are not intended to indicate any specific spatial or temporal order. Moreover, the labeling of a first element does not imply the existence of a second element, and vice versa.

[0143] Understandable. Figures 1 to 9A to Figure 9B This includes circuits or operations shown using solid lines and circuits, components, features, or operations shown using dashed lines. Circuits or operations included in solid lines are those included in the broadest examples. Circuits, components, features, or operations included in dashed lines are examples that may include or be part of the circuits, components, features, or operations shown in the solid-line examples, or additional circuits, components, features, or operations that may be taken besides those shown in the solid-line examples. It should be understood that these operations do not need to be performed in the order presented. Furthermore, it should be understood that not all operations need to be performed. Example operations can be performed in any order and in any combination. It should be understood that these operations do not need to be performed in the order presented. Circuits, components, features, or operations included in dashed lines can be considered optional.

[0144] Other operations not described in this document may be combined with the example operations. For example, one or more additional operations may be performed before, after, simultaneously with, or between any of the described operations.

[0145] Some of the features discussed above as individual implementations can also be implemented as a single implementation in a combination. Conversely, features described as a single implementation can also be implemented separately or in any suitable sub-combination in multiple implementations. Furthermore, while features may be described above as functioning in certain combinations, in some cases, one or more features from the claimed combination can be removed from the combination, and the combination can be claimed as any sub-combination or any variation of the sub-combination.

[0146] It should be noted that the word "includes" does not necessarily exclude the presence of other elements or steps besides those listed.

[0147] It should be noted that the word "one" or "a" preceding the element does not preclude the existence of multiple such elements.

[0148] It should also be noted that any reference numerals do not limit the scope of the claims, these examples can be implemented at least in part by means of hardware and software, and several “tools,” “units,” or “apparatus” can be represented by the same hardware item.

[0149] The degree language used herein, such as the terms “approximately,” “about,” “usually,” and “substantially”, as used herein, refers to a value, quantity, or characteristic that is close to the stated value, quantity, or characteristic, still capable of performing the desired function or achieving the desired result. For example, the terms “approximately,” “about,” “usually,” and “substantially” can refer to a quantity that is less than or equal to 10%, less than or equal to 5%, less than or equal to 1%, less than or equal to 0.1%, and less than or equal to 0.01% of the stated quantity. If the quantity is 0 (e.g., none), the above ranges can be specific ranges and not within a specific percentage of that value.

[0150] The various example methods, apparatuses, nodes, and systems described herein are described in the general context of method steps or processes. In one aspect, these method steps or processes can be implemented by a computer program product, which includes computer-executable instructions such as program code that are executed by a computer in a networked environment and reside in a computer-readable medium. Computer-readable media can include removable and non-removable storage devices, including but not limited to read-only memory (ROM), random access memory (RAM), compact discs (CDs), digital versatile discs (DVDs), etc. Typically, program circuitry can include routines, programs, objects, components, data structures, etc., that perform a specified task or implement a particular abstract data type. Computer-executable instructions, associated data structures, and program circuitry represent examples of program code for performing steps of the methods disclosed herein. A particular sequence of such executable instructions or associated data structures represents examples of corresponding actions for implementing the functionality described in such steps or processes.

[0151] Although features have been shown and described, it will be understood that they are not intended to limit the scope of the claimed disclosure, and it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the scope of the claimed disclosure. Therefore, the specification and drawings are to be regarded as illustrative rather than restrictive. The claimed disclosure is intended to cover all substitutions, modifications, and equivalents.

Claims

1. A method (100) performed by a network node for implementing data communication with a wireless device, the method comprising: A configuration for transmitting (S104) a phase tracking reference signal (PTRS) with embedded data between the network node and the wireless device, wherein the configuration enables the wireless device to retrieve the data embedded in the PTRS and / or transmit the PTRS with the data embedded.

2. The method according to claim 1, wherein the method comprises: The PTRS containing the data is sent to the wireless device (S106).

3. The method according to any one of the preceding claims, wherein, The PTRS that embeds the data contains real-valued symbols that carry the data.

4. The method according to any one of the preceding claims, wherein, The configuration includes information indicating the modulation alphabet and / or multiple predetermined amplitude levels.

5. The method according to any one of the preceding claims, wherein, The configuration includes selector flags indicating the modulation alphabet and / or multiple predetermined amplitude levels.

6. The method according to any one of the preceding claims, wherein, The configuration is a part of the following: downlink control information, and / or semi-persistent radio resource control scheduling, and / or periodic radio resource control scheduling, and / or media access control control elements.

7. The method according to any one of the preceding claims, wherein, The PTRS can achieve phase tracking.

8. The method according to any one of the preceding claims, the method comprising: The wireless device receives (S102) a capability signaling instructing the wireless device to process the PTRS embedded in the data.

9. The method according to any one of the preceding claims, wherein, The configuration indicates that the PTRS embedding the data is associated with a unicast channel, multicast channel, broadcast channel, control channel, and / or shared channel.

10. The method according to any one of the preceding claims, wherein, The configuration indicates that the PTRS embedded in the data is associated with one or more of the PDSCH channel, PDCCH channel, PUSCH channel, PUCCH channel, SL PSCCH channel, and PSSCH channel.

11. The method according to any one of the preceding claims, wherein, The method includes generating (S105) the PTRS by encoding the data (S105A) in the PTRS.

12. The method according to claim 11, wherein, Encoding the data (S105A) in the PTRS includes selecting (S105B) symbols from a distribution associated with the modulated alphabet.

13. The method according to any one of the preceding claims, wherein, Transmitting (S104) the configuration includes sending (S104A) the configuration to the wireless device.

14. The method according to any one of the preceding claims, wherein, Transmitting (S104) the configuration includes receiving (S104B) the configuration from the wireless device.

15. A method (200) performed by a wireless device for realizing data communication with the wireless device, the method comprising: The configuration of transmitting (S204) a phase tracking reference signal (PTRS) with embedded data, wherein the configuration enables the wireless device to retrieve the data embedded in the PTRS and / or transmit the PTRS with the data embedded in it.

16. The method according to claim 15, wherein, The configuration transmitted (S204) includes receiving (S204A) the configuration from a network node or from a sidelink wireless device.

17. The method according to any one of claims 15 to 16, wherein, Transmitting the configuration (S204) includes sending (S204B) the configuration to the network node and / or to the sidelink wireless device.

18. The method according to claims 15 to 17, wherein the method comprises: Transmit (S206) the PTRS containing the data.

19. The method according to claim 18, wherein, Transmitting (S206) the PTRS embedding the data includes: receiving (S206A) the PTRS embedding the data; and wherein the method includes: The data is retrieved from the PTRS based on the configuration (S207).

20. The method according to claim 19, wherein, Receiving (S206A) the PTRS embedding the data includes receiving (S206AA) the PTRS embedding the data from the network node or from the sidelink radio device.

21. The method according to any one of claims 18 to 20, wherein, Transmitting (S206) the PTRS embedding the data includes: sending (S206B) the PTRS embedding the data to the network node and / or to the sidelink wireless device.

22. The method according to any one of claims 15 to 21, wherein, The PTRS that embeds the data contains real-valued symbols that carry the data.

23. The method according to any one of claims 15 to 22, wherein, The configuration includes information indicating the modulation alphabet and / or multiple predetermined amplitude levels.

24. The method according to any one of claims 15 to 23, wherein, The configuration includes selector flags indicating the modulation alphabet and / or multiple predetermined amplitude levels.

25. The method according to any one of claims 15 to 24, wherein, The configuration is a part of the following: downlink control information, and / or semi-persistent radio resource control scheduling, and / or periodic radio resource control scheduling, and / or media access control control elements.

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