Method for improving communication between radio network node and wireless device, related wireless device and related radio network node

Abstract

A method performed in a wireless device, WD, is disclosed for enabling a radio network node to improve communication with the WD. The method comprises transmitting, to a radio network node, a message indicating a power property of a transceiver of the WD, where the power property indicates a contribution of the transceiver to transmit path loss and a contribution of the transceiver to receive path loss.

Description

[0001] This disclosure relates to the field of wireless communications. Specifically, it relates to methods for enabling radio network nodes to improve communication with wireless devices (WDs), related WDs, methods for improving communication with WDs, and related radio network nodes. Background Technology

[0002] In wireless telecommunications systems, channel sounding is used to assess the radio environment used for wireless communication, such as channel conditions for determining the channels through which communication occurs between the WD and radio network nodes. In the 3rd Generation Partnership Project (3GPP) New Radio (NR), reciprocity-based massive MIMO or downlink-based channel state information (CSI) estimation based on sounding reference signals (SRS) are widely deployed as channel sounding methods.

[0003] However, current methods have some limitations in terms of performance. Since the uplink (UL) is used for channel probing and reciprocity between the UL and downlink (DL) is assumed, predictability of the transmitted SRS is important. In this paper, reciprocity can be viewed as the channel conditions in the DL corresponding to the channel conditions estimated in the UL. For the reciprocity assumption to hold, the transmitted SRS needs to be strong and representative of the sensitivity of the receive path in the DL. However, in many cases, the transmitted SRS in the transmit path (such as in the UL) does not represent the actual sensitivity of the receive path. Summary of the Invention

[0004] Therefore, there is a need for devices and methods that can mitigate, alleviate, or resolve existing drawbacks and provide improved estimates of DL channel conditions related to WD, enabling radio network nodes to improve their communication with wireless devices.

[0005] A method, executed in a wireless device (WD), is disclosed for enabling a radio network node to improve communication with the WD. The method includes transmitting to the radio network node a message indicating the power properties of the WD's transceivers. The power properties indicate the transceiver's contribution to transmit path loss and its contribution to receive path loss.

[0006] Additionally, a wireless device is provided, comprising memory circuitry, processor circuitry, and a wireless interface. The wireless device is configured to perform any of the methods disclosed herein.

[0007] The advantage of this disclosure is that the WD enables the detection of communication channels (such as radio channels) with improved accuracy and robustness. By transmitting power properties to the radio network node, the WD enables the radio network node to calibrate measurements of the reference signal received from the WD to provide a better estimate of the DL radio channel. Furthermore, the disclosed method allows for improvements in the quality and efficiency of UL and DL communications because the radio network node is enabled to adjust one or more communication parameters, such as precoders and / or scheduling of UL and / or DL ​​communications, based on the improved detection accuracy of the communication channel (such as radio channel). The disclosed method allows the radio network node to apply one or more different precoders and different schedules for UL and / or DL ​​channels while taking into account the power properties of the corresponding WD.

[0008] A method for improving communication with a wireless transceiver (WD), performed in a radio network node, is disclosed. The method includes receiving from the WD a message indicating the power characteristics of the WD's transceiver. The power characteristics may indicate the transceiver's contribution to transmit path loss and its contribution to receive path loss. The method also includes calibrating measurements of a reference signal received from the WD based on the power characteristics.

[0009] In addition, a radio network node is provided, which includes memory circuitry, processor circuitry, and a wireless interface, wherein the radio network node is configured to perform any of the methods disclosed herein.

[0010] The advantage of this disclosure is that radio network nodes can perform communication channel (such as a radio channel) detection with improved accuracy and robustness based on the power characteristics received from the WD. Based on the power characteristics, the radio network node can calibrate measurements of the reference signal received from the WD to provide a better estimate of the DL radio channel. Furthermore, the disclosed method allows for improved quality and efficiency of UL and DL communications because the radio network node can adjust one or more communication parameters, such as precoders and / or scheduling of UL and / or DL ​​communications, based on the improved detection accuracy of the communication channel (such as a radio channel). The disclosed method allows the radio network node to apply one or more different precoders and different schedules for UL and / or DL ​​channels while taking into account the power characteristics of the respective WD. Attached Figure Description

[0011] The above and other features and advantages of this disclosure will become readily 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 1This is a diagram illustrating an example wireless communication system including an example network node and an example wireless device according to this disclosure. Figures 2A to 2B This is a diagram illustrating an example wireless device architecture and an example loss associated with that architecture. Figure 3 This is a flowchart illustrating an example method performed in a wireless device of a wireless communication system according to the present disclosure, for enabling a radio network node to improve communication with a WD. Figure 4 This is a flowchart illustrating an example method for improving communication with a WD, performed in a radio network node of a wireless communication system according to the present disclosure. Figure 5 It is a block diagram illustrating an example wireless device according to this disclosure, and Figure 6 This is a block diagram illustrating an example radio network node according to the present disclosure. Detailed Implementation

[0012] 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, and throughout the drawings, elements with similar structures or functions are indicated by similar reference numerals. It should also be noted that the drawings are intended only to facilitate 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 do not need to possess all the aspects or advantages shown. Aspects or advantages described in connection with a particular example are not necessarily limited to that example, and may be practiced in any other example even if not so illustrated or so explicitly described.

[0013] The accompanying drawings are schematic and simplified for clarity, and they show only details that aid in understanding this disclosure, while other details have been omitted. Throughout, the same reference numerals are used for the same or corresponding parts.

[0014] Figure 1 The diagram illustrates an example wireless communication system 1 according to the present disclosure, which includes an example radio network node 400 and an example wireless device 300.

[0015] As discussed in detail herein, this disclosure relates to a wireless communication system 1 including a cellular system, such as a 3GPP wireless communication system. The wireless communication system 1 includes a wireless device 300 and / or a radio network node 400.

[0016] The radio network node disclosed herein refers to a radio access network (RAN) node operating in a radio access network, such as a base station, evolved Node B, eNB, or gNB in ​​an NR. In one or more examples, the RAN node is a functional unit that can be distributed across several physical units.

[0017] In one or more examples, the wireless communication system 1 may include a core network (CN) node. The CN node disclosed herein refers to a network node operating in a core network, such as in an evolved packet core network (EPC) and / or a 5G core network (5GC). Examples of CN nodes in an EPC include a mobility management entity (MME).

[0018] 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 one or more of the following: base station, eNB, gNB and / or access point. Wireless devices may refer to mobile devices and / or user equipment (UE). Wireless devices 300, 300A may be configured to communicate with network nodes 400 via wireless links (or radio access links) 10, 10A.

[0019] Wireless devices 300 and 300A can be configured for multiple-input multiple-output (MIMO) communication. MIMO is a wireless technology that increases the data capacity of a WD by using multiple transmit and / or receive antennas. Each antenna can be connected to one or more transmitters and / or receivers in the transceivers of the WD 300 and 300A. This allows multiple receive and / or transmit radio channels to be provided for communication between the WD 300 and 300A and the radio network node 400 via wireless link 10. To determine the radio channel conditions of these radio channels, such as by transmitting a reference signal in the UL using one or more transmit radio channels of the WD 300 and 300A, channel sounding can be performed. The radio network node can then measure the transmitted reference signal to estimate the radio channel conditions for DL ​​communication from the radio network node 400 to the WD 300 and 300A. However, depending on the internal losses of the transceivers in the WD 300 and 300A, the estimation of the DL radio channel conditions may be more or less accurate.

[0020] Figure 2A and Figure 2B Two example WD architectures (such as the WD transceiver 303 configuration) are illustrated, and the solutions according to this disclosure can be applied to these architectures. Different WD architectures may have different advantages and disadvantages. Figure 2A and Figure 2BIn the example WD architecture, transceiver 303 includes one transmitter (T) and two receivers (R), which can be referred to herein as a 1T2R transceiver configuration. Figure 2A The example WD architecture includes a first switch 3031 (such as a cross switch, a switching switch, or a double-pole double-throw (DPDT) switch) that switches between antenna ports 3035A and 3035B for transmission and / or reception. Figure 2A In the example WD architecture, the first receiver 3033A and transmitter T 3034 are connected to the first switch 3031 via a duplexer 3032 (such as a duplex filter). The duplexer 3032 can be a single-pole double-throw (SPDT) switch for time division multiplexing (TDD) communication, or a filter for frequency division multiplexing (FDD) communication. Figure 2A In the example WD architecture, the second receiver 3033B can be directly connected to the first switch 3031.

[0021] exist Figure 2B In the example WD architecture, the first receiver 3033A is connected to the first antenna port 3035A via a first duplexer 3032A. The second receiver 3033B is directly connected to the second antenna port 3035B via a second duplexer 3032B. The first duplexer 3032A and the second duplexer 3032B can correspond to... Figure 2A The duplexer 3032 in the diagram may be one or more of an SPDT switch for TDD and a filter for FDD. The transmitter 3034 is connected to a first duplexer 3032A and a second duplexer 3032B via a path-selective switch 3031 (such as an SPDT). The switch 3031 can thus switch which duplexer 3032A or 3032B the transmitter 3034 will use for transmission, and thus switch which antenna port 3035A or 3035B the transmitter will use for transmission.

[0022] Figure 2A and Figure 2B The two example WD architectures shown can be configured to associate the receive path with each antenna port and the transmit path with any one of the antenna ports (but not simultaneously). Figure 2A and Figure 2B The example architecture shown may have at least three causes of loss that could lead to performance imbalances between the receive and transmit paths, such as regions that cause loss. These losses occur in... Figure 2A and Figure 2B The middle is indicated as (L1) to (L3).

[0023] The first example loss (L1) may be due to the duplexer 3032 existing only in one of the receiver paths, such as the path between the first receiver 3032A and the antenna port. This could cause an imbalance in the performance of the two receivers, because the path loss associated with the duplexer 3032 only affects the path from the antenna port to the first receiver 3033A, and not the path from the antenna port to the second receiver 3033B.

[0024] The second example loss (L2) may be due to one of the antennas (such as the second antenna 3035B) being associated with a long route (such as wiring) and / or the antenna implementation performing worse than the other antenna, which may cause an imbalance between the first antenna 3035A and the second antenna 3035B.

[0025] The third example loss (L3) could be due to the route from the transmitter to one of the antennas (such as to the second antenna 3035B) being longer than the route to the first antenna 3035A, for example, if it is located near a remote antenna. This could cause an imbalance in transmission performance when using different antennas.

[0026] Different WD architectures can lead to different imbalances between the transmitter and receiver. For example, in a downlink (DL) channel state information (CSI) scenario based on a sounding reference signal (SRS) assuming reciprocity, if the SRS is transmitted by one of the antennas at a weaker power (e.g., by...),... Figure 2B If the example loss L3 is caused by this, then the received SRS cannot represent the actual radio channel conditions, such as quality, between the WD and the radio network nodes. Reciprocity can be considered in this paper as the UL propagation channel estimate being equal to the DL propagation channel. In this case, the WD can report this imbalance between the transmit and receive paths to the radio network nodes, for example, by reporting its power properties. The WD can send the report during the registration process with the network. Power properties can indicate the contribution of the WD transceiver to the transmit path loss and / or receive path loss. Power properties can be reported as the actual path loss for each receive and transmit path (e.g., in dB) or as the ratio between each receive path and each transmit path.

[0027] In one or more examples, if the SRS signal is weak due to the example loss L2 described above, the UL signal transmitted by transmitter 3034 via second antenna port 3035B and the DL signal received by second receiver 3033B via the same antenna both exhibit the same degradation. In this case, the received SRS can be considered representative because the same loss applies to both the transmit and receive paths. In this situation, WD can report a 0 dB imbalance between the transmit and receive paths to the radio network node, or it can avoid sending a report to the radio network node.

[0028] Correspondingly, regarding Figure 2A The loss L1 shown (i.e., the loss in duplexer 3032) is balanced in one of the paths (i.e., the first receive path via the first receiver 3033A and the transmit path via the transmitter 3034). This is because both the first receive path and the transmit path experience the loss in duplexer 3032. Another receive path (such as the second receive path via the second receiver 3033B) has better receive performance than the first receive path because the second receive path is directly coupled to switch 3031 and does not experience the loss in duplexer 3032.

[0029] Therefore, to ensure that radio channels (such as UL radio channels and / or DL ​​radio channels) are always probed at representative power levels, it may be necessary to report both the receive path loss and the transmit path loss of the WD (such as a WD transceiver). In one or more examples of this disclosure, this can be accomplished by the WD reporting the corresponding path loss for each transmit and receive path, as well as the path loss ratio between the transmit path loss and the receive path loss of each SRS and its associated receive path.

[0030] In one or more example methods, a WD can report to radio network nodes the ratio of path loss for each receive path to path loss for each transmit path. In other words, for a WD comprising N receivers and M transmitters, the WD can report N×M path loss ratios to the radio network nodes. For example, if a WD (such as a WD transceiver) comprises two receivers and one transmitter, the WD can report two receive path loss ratios. If a WD (such as a WD transceiver) comprises two receivers and two transmitters, the WD can report four receive path loss ratios, each representing a ratio for each transmit path loss.

[0031] have Figure 2AThe example WD architecture in the example can report the receive path loss of the first receive path to the first receiver 3033A as a ratio L1-L1 dB (=0), and report the receive path loss of the second receive path to the second receiver 3033B as a ratio L1-L1 dB (assuming L1 has the effect of L1 dB loss).

[0032] Similarly, having Figure 2B The example WD architecture can report a path loss ratio of 0 dB for the receive path from the first antenna 3035A to the first receiver 3033A and a path loss ratio L3-1 dB for the receive path from the second antenna 3035B to the second receiver 3033B. The WD can avoid reporting path loss caused by L2 because L2 has the same effect on both reception and transmission. These examples are simplified and all other interconnections are configured ideally; however, further loss differences (such as those caused by switch 3031) can be included in the reports sent to the radio network nodes.

[0033] Figure 3 A flowchart of an example method 100 performed by a wireless device according to this disclosure for enabling a radio network node to improve communication with a WD is shown. The wireless device is the wireless device disclosed herein, such as... Figure 1 and Figure 5 Wireless device 300 in the document. Improved communication can be considered as one or more of the following operations: adaptation, scheduling, and precoding of communication with WD.

[0034] Method 100 includes transmitting, in step S102, a message to a radio network node indicating the power properties of the transceiver of the WD. The power properties indicate the transceiver's contribution to transmit path loss and its contribution to receive path loss. The transceiver's contribution to transmit path loss and / or receive path loss may be related to the WD's architecture, such as the properties of one or more components of the transceiver. In one or more example methods, the transceiver's contribution to transmit path loss and / or receive path loss may be due to losses in components of the transceiver, such as losses in filters, switches, duplexers, wiring, and / or antenna implementations (such as elements).

[0035] In one or more example methods, power properties are pre-configured in the WD. Power properties (such as the corresponding losses for each transmit path and / or receive path, such as the losses of each component in the corresponding path) may be pre-configured in the WD during manufacturing. During manufacturing, the losses of each component can be measured and / or categorized, and this information can be stored in the WD. The corresponding losses can be pre-configured, for example, by storing the losses in the WD's memory circuitry. In one or more example methods, power properties (such as corresponding losses) may be indicated as actual power losses (such as power losses in watts (W)). In one or more example methods, power properties (such as corresponding losses) may be indicated as dimensionless quantities, such as "0.5" meaning that the actual power loss is half the signal power, such as if the signal power is 20 W, then the actual power loss is 10 W, but if the signal power is 2 W, then the actual power loss is only 1 W. In one or more example methods, power properties (such as corresponding losses) may be indicated in decibels (dB).

[0036] In one or more example methods, the power property indicates a combination of transmit path loss and receive path loss of the transceiver. In one or more example methods, this combination is a ratio of power loss, such as the ratio of the power loss-related amounts for the respective receive and transmit paths.

[0037] In one or more example methods, transmit path loss and receive path loss are associated with individual reference signal sources (such as time and / or frequency resources) configured for the WD. For example, the WD may be configured to transmit and / or receive reference signals, such as SRS, on the receive and transmit paths via radio network nodes using individual (such as corresponding) resources.

[0038] In one or more example methods, the power properties are associated with the corresponding antenna ports of the WD (such as antenna elements). In other words, the WD can report the transmit path loss and receive path loss between each receiver and / or transmitter and each antenna available for communication with each receiver and / or transmitter.

[0039] In one or more example methods, method 100 includes transmitting an S104 reference signal, such as a probe reference signal, to a radio network node. This reference signal can be transmitted using at least one transmit path of a WD transceiver.

[0040] Figure 4 A flowchart of an example method 200 for improving communication with a WD, performed by a radio network node according to this disclosure, is shown. The radio network node is the radio network node disclosed herein, such as... Figure 1 and Figure 6 Radio network node 400 in the middle.

[0041] Method 200 includes receiving from the WD a message S202 indicating the power characteristics of the WD's transceiver. The power characteristics indicate the transceiver's contribution to transmit path loss and its contribution to receive path loss. The transceiver's contribution to transmit path loss and / or receive path loss may be related to the WD's architecture, such as the characteristics of one or more components of the transceiver. In one or more example methods, the transceiver's contribution to transmit path loss and / or receive path loss may be due to losses in components of the transceiver, such as losses in filters, switches, duplexers, wiring, and / or antenna implementations (such as elements).

[0042] In one or more example methods, power properties (such as corresponding losses) may be indicated as actual power loss (such as power loss in watts (W)). In one or more example methods, power properties (such as corresponding losses) may be indicated as dimensionless quantities, such as "0.5" meaning that the actual power loss is half the signal power; for example, if the signal power is 20 W, the actual power loss is 10 W, but if the signal power is 2 W, the actual power loss is only 1 W. In one or more example methods, power properties (such as corresponding losses) may be indicated in decibels (dB).

[0043] In one or more example methods, transmit path loss and receive path loss are associated with individual reference signal sources (such as time and / or frequency resources) configured for the WD. For example, the WD may be configured to transmit and / or receive reference signals, such as SRS, on the receive and transmit paths via radio network nodes using individual (such as corresponding) resources.

[0044] In one or more example methods, the power properties are associated with individual (such as corresponding) antenna ports of the WD (such as antenna elements). In other words, the WD can report the transmit path loss and receive path loss between each receiver and / or transmitter and each antenna available for communication with each receiver and / or transmitter.

[0045] In one or more example methods, the power property indicates a combination of transmit path loss and receive path loss of the transceiver. In one or more example methods, this combination is a ratio of power loss, such as the ratio of the power loss-related amounts for the respective receive and transmit paths.

[0046] In one or more example methods, method 200 includes receiving a reference signal S203 from the WD, such as a probe reference signal.

[0047] Method 200 includes calibrating measurements of the reference signal received from the WD in step S204 based on power properties. Therefore, radio network nodes can calibrate their channel estimates based on the power properties of the WD. Reference signal values ​​(such as channel estimates based on the received reference signal) can be used by radio network nodes to apply different precoders and / or schedules to traffic entering and / or leaving the WD. More accurate radio channel estimation can be achieved by using calibrated measurements to perform radio channel estimation.

[0048] In one or more example methods, method 200 includes applying one or more of the S206 precoder and scheduling to communicate with the WD based on calibrated measurements of a reference signal. In one or more example methods, applying the S206 precoder may include precoding the communication with the WD based on calibrated measurements, such as those based on the characteristics of the received power, in a process called S206A. This allows radio network nodes to determine configuration and / or precoding based on the actual radio channel conditions of the wireless device. In one or more example methods, applying the S206 precoder may include scheduling the communication with the WD based on calibrated measurements, such as those based on the characteristics of the received power, in a process called S206B.

[0049] In one or more example methods, a radio network node can configure a WD by sending a configuration message indicating the configuration, which includes indications for an individual reference signal source and / or corresponding antenna port of the WD. In other words, the radio network node can provide different configurations for different reference signal sources and / or different antenna ports of the WD. Therefore, the configuration message may include indicators that indicate the reference signal source and / or antenna port of the WD.

[0050] Figure 5 A block diagram of an example wireless device 300 according to this disclosure is shown. Wireless device 300 includes memory circuitry 301, processor circuitry 302, and a wireless interface 303, such as a transceiver. Wireless device 300 can be configured to perform... Figure 3 Any of the methods disclosed herein. In other words, the wireless device 300 can be configured to enable radio network nodes to improve communication with the WD.

[0051] Wireless device 300 is configured to communicate with network nodes (such as wireless devices disclosed herein) using a wireless communication system.

[0052] Wireless device 300 is configured to transmit (e.g., via wireless interface 303, such as a transceiver) a message indicating the transceiver power properties of the WD to a radio network node. The power properties indicate the transceiver's contribution to transmit path loss and its contribution to receive path loss.

[0053] The wireless interface 303 is configured to conduct wireless communication via a wireless communication system, such as a 3GPP system, such as a 3GPP system supporting 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 in licensed or unlicensed frequency bands.

[0054] Wireless device 300 is optionally configured to perform Figure 3 Any operation disclosed in the above (such as S102, S104). The operation of the wireless device 300 may be implemented in the form of executable logic routines (e.g., lines of code, software programs, etc.), which are stored on a non-transitory computer-readable medium (e.g., memory circuitry 301) and executed by processor circuitry 302.

[0055] Furthermore, the operation of the wireless device 300 can be considered as a method configured to be performed by the wireless device 300. Additionally, while the described functions and operations can be implemented in software, such functions can also be performed via dedicated hardware or firmware, or some combination of hardware, firmware, and / or software.

[0056] The memory circuit 301 can be one or more of the following: a buffer, flash memory, hard disk drive, removable media, volatile memory, non-volatile memory, random access memory (RAM), or 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 exchanges 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 5 (Not shown in the image). The memory circuit 301 is considered a non-transitory computer-readable medium.

[0057] The memory circuit 301 can be configured to store information (such as information indicating power properties, path loss, pre-encoder and / or scheduling) in a portion of the memory.

[0058] Figure 6 A block diagram of an example radio network node 400 according to this disclosure is shown. The radio network node 400 includes memory circuitry 401, processor circuitry 402, and a wireless interface 403. The radio network node 400 can be configured to perform... Figure 4 Any of the methods disclosed herein. In other words, the radio network node 400 can be configured to improve communication with the WD.

[0059] Radio network node 400 is configured to communicate with wireless devices, such as wireless device 300 disclosed herein, using a wireless communication system.

[0060] The wireless interface 403 is configured to conduct wireless communication via a wireless communication system, such as a 3GPP system, such as a 3GPP system supporting 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 in licensed or unlicensed frequency bands.

[0061] Network node 400 is configured to receive, for example, a message from the WD indicating the power properties of the WD's transceiver via wireless interface 403. The power properties indicate the transceiver's contribution to transmit path loss and its contribution to receive path loss.

[0062] Network node 400 is configured, for example, to use processor circuitry to calibrate the measurements of a reference signal received from WD based on power properties.

[0063] Processor circuit 402 is optionally configured to execute Figure 4 Any operation disclosed in the above (such as any one or more of the following: S202, S203, S204). The operation of network node 400 may be implemented 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 circuit 401) and executed by processor circuit 402.

[0064] Furthermore, the operation of network node 400 can be considered as a method configured to be performed by network node 400. Additionally, while the described functions and operations can be implemented in software, such functions can also be performed via dedicated hardware or firmware, or some combination of hardware, firmware, and / or software.

[0065] The memory circuit 401 can be one or more of the following: a buffer, flash memory, hard disk drive, removable media, volatile memory, non-volatile memory, random access memory (RAM), or other suitable devices. In a typical arrangement, the memory circuit 401 may include non-volatile memory for long-term data storage and volatile memory used as system memory for the processor circuit 402. The memory circuit 401 exchanges data with the processor circuit 402 via a data bus. Control lines and an address bus may also exist between the memory circuit 401 and the processor circuit 402. Figure 4 (Not shown in the image). The memory circuit 401 is considered a non-transitory computer-readable medium.

[0066] The memory circuit 401 can be configured to store information (such as information indicating power properties, path loss, pre-encoder and / or scheduling) in a portion of the memory.

[0067] Examples of methods and products (wireless devices and network nodes) based on this disclosure are illustrated in the following items: Project 1. A method executed in a wireless device (WD) to enable a radio network node to improve communication with the WD, the method comprising: - Transmit (S102) a message to the radio network node indicating the power properties of the transceiver of the WD, wherein the power properties indicate the transceiver's contribution to the transmit path loss and the transceiver's contribution to the receive path loss.

[0068] Project 2. According to the method of Project 1, wherein the transmit path loss and receive path loss are associated with an individual reference signal source configured to the WD.

[0069] Project 3. According to the method of Project 1 or 2, wherein the individual reference signal source is associated with the corresponding antenna port of the WD.

[0070] Project 4. According to the method of any of the preceding projects, wherein the power property indicates the combination of the transmit path loss and the receive path loss of the transceiver.

[0071] Project 5. Based on the method of Project 4, where the combination is the ratio of power loss.

[0072] Project 6. The method of any of the preceding projects, wherein the power properties are pre-configured in WD.

[0073] Project 7. According to the method of any of the preceding projects, wherein the transceiver's contribution to transmit path loss and / or the transceiver's contribution to receive path loss is related to the properties of one or more components of the transceiver.

[0074] Project 8. According to the method of Project 7, wherein these components include one or more of the following: filters, switches, wiring and antenna implementations.

[0075] Project 9. A method according to any of the preceding projects, wherein the method includes: - Transmit (S104) reference signal to radio network nodes.

[0076] Item 10. A method for improving communication with a WD, performed in a radio network node, the method comprising: - Receive (S202) from WD a message indicating the power properties of WD's transceiver, wherein the power properties indicate the transceiver's contribution to transmit path loss and the transceiver's contribution to receive path loss, and - Calibrate (S204) the measured values ​​of the reference signal received from the WD based on the power properties.

[0077] Project 11. According to the method of Project 10, wherein the transmit path loss and receive path loss are associated with an individual reference signal source configured to the WD.

[0078] Project 12. According to the method of Project 10 or 11, where the power properties are associated with the individual antenna ports of the WD.

[0079] Project 13. The method of any one of Projects 10 to 12, wherein the power property indicates the combination of the transmit path loss and the receive path loss of the transceiver.

[0080] Project 14. According to the method of Project 13, where the combination is a power ratio.

[0081] Project 15. The method of any of Projects 10 to 14, wherein the transceiver’s contribution to transmit path loss and / or the transceiver’s contribution to receive path loss is associated with the properties of one or more components of the transceiver.

[0082] Project 16. According to the method of Project 15, wherein these components include one or more of the following: filters, switches, wiring and antenna implementations.

[0083] Project 17. The method according to any one of Projects 10 to 16, wherein the method includes: - Receive reference signal (S203) from WD.

[0084] Project 18. A method according to any one of Projects 10 to 17, wherein the method includes: - Based on the calibrated measurement value of the reference signal, one or more of the pre-encoder and scheduler (S206) are used to communicate with the WD.

[0085] Item 19. According to the method of Item 18, wherein the application (S206) includes: precoding the communication with WD based on the calibrated measurement value of the reference signal (S206A).

[0086] Item 20. According to the method of Item 18, wherein the application (S206) includes: scheduling communication between S206B and WD based on calibrated measurements of a reference signal.

[0087] Item 21. A wireless device comprising memory circuitry, processor circuitry, and a wireless interface, wherein the wireless device is configured to perform any one of the methods according to any of items 1 to 9.

[0088] Item 22. A radio network node including memory circuitry, processor circuitry, and a wireless interface, wherein the radio network node is configured to perform any one of the methods according to any of Items 10 to 20.

[0089] The use of the terms "first," "second," "third," and "fourth," "primary," "secondary," and "third-level," etc., does not imply any particular order, but is included to identify individual elements. Furthermore, the use of the terms "first," "second," "third," and "fourth," "primary," "secondary," and "third-level," etc., does not indicate any order or importance, but is used to distinguish one element from another. It should be noted that the terms "first," "second," "third," and "fourth," "primary," "secondary," and "third-level," etc., here and elsewhere, are used solely for labelling purposes and are not intended to indicate any particular spatial or temporal order. Moreover, the labeling of a first element does not imply the existence of a second element, and vice versa.

[0090] Understandable. Figures 1 to 6 This includes circuits or operations illustrated with solid lines and circuits, components, features, or operations illustrated with dashed lines. Circuits or operations included with solid lines are those included in the most broad examples. Circuits, components, features, or operations included with dashed lines are examples that can be included in the circuits, components, features, or operations of the solid-line examples, or are part of the circuits, components, features, or operations of the solid-line examples, or are other circuits, components, features, or operations that can be employed in addition to those of 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 with dashed lines can be considered optional.

[0091] Other operations not described in this document may be incorporated into the example operations. For example, one or more additional operations may be performed before, after, simultaneously with, or between any of the described operations.

[0092] Some features discussed above as individual implementations can also be implemented in combination as a single implementation. Conversely, features described as a single implementation can also be implemented individually or in any suitable sub-combination in multiple implementations. Furthermore, although 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 that combination, and that combination can be claimed as any sub-combination or a variation of any sub-combination.

[0093] It should be noted that the word "including" does not necessarily exclude the presence of other elements or steps besides those listed.

[0094] It should be noted that the words "a" or "an" preceding an element do not preclude the existence of multiple such elements.

[0095] It should also be noted that no reference numerals in the drawings limit the scope of the claims, examples may be implemented at least in part by means of both hardware and software, and several “apparatus”, “units” or “devices” may be represented by the same piece of hardware.

[0096] The various example methods, devices, nodes, and systems described herein are described in the general context of method steps or processes. In one aspect, these steps or processes can be implemented by a computer program product embodied in a computer-readable medium, which includes computer-executable instructions, such as program code, executed by a computer in a networked environment. The computer-readable medium can include removable and non-removable storage devices, including but not limited to read-only memory (ROM), random access memory (RAM), optical disc (CD), digital versatile disc (DVD), etc. Generally, program circuitry can include routines, programs, objects, components, data structures, etc., that perform a specified task or implement a particular abstract data type. The 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.

[0097] Although features have been shown and described, it should be understood that they are not intended to limit 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. Accordingly, this specification and drawings are to be considered illustrative rather than restrictive. The claimed disclosure is intended to cover all alternatives, modifications, and equivalents.

Claims

1. A method executed in a wireless device (WD) for enabling a radio network node to improve communication with the WD, the method comprising: - Transmit (S102) to the radio network node a message indicating the power properties of the transceiver of the WD, wherein the power properties indicate the transceiver's contribution to transmit path loss and the transceiver's contribution to receive path loss.

2. The method of claim 1, wherein, The transmit path loss and the receive path loss are associated with an individual reference signal source configured to the WD.

3. The method of claim 1 or 2, wherein, The power properties are associated with the corresponding antenna port of the WD.

4. The method according to any of the preceding claims, wherein, The power properties indicate the combination of the transmit path loss and the receive path loss of the transceiver.

5. The method of claim 4, wherein, The combination is the ratio of power loss.

6. The method according to any one of the preceding claims, wherein, The power properties are pre-configured in the WD.

7. The method according to any one of the preceding claims, wherein, The contribution of the transceiver to the transmit path loss and / or the contribution of the transceiver to the receive path loss is related to the properties of one or more components of the transceiver.

8. The method of claim 7, wherein, The components include one or more of the following: filters, switches, wiring, and antenna implementations.

9. The method of any of the preceding claims, wherein, The method includes: - Transmit (S104) a reference signal to the radio network node.

10. A method performed in a radio network node for improving communication with a WD, the method comprising: - Receive (S202) from WD a message indicating the power properties of the transceiver of the WD, wherein the power properties indicate the transceiver's contribution to transmit path loss and the transceiver's contribution to receive path loss, and - Based on the power properties, calibrate (S204) the measured value of the reference signal received from the WD.

11. The method of claim 10, wherein, The transmit path loss and the receive path loss are associated with an individual reference signal source configured to the WD.

12. The method of claim 10 or 11, wherein, The power properties are associated with the individual antenna ports of the WD.

13. The method of any one of claims 10 to 12, wherein, The power properties indicate the combination of the transmit path loss and the receive path loss of the transceiver.

14. The method of claim 13, wherein, The combination refers to the power ratio.

15. The method of any one of claims 10 to 14, wherein, The contribution of the transceiver to the transmit path loss and / or the contribution of the transceiver to the receive path loss is related to the properties of one or more components of the transceiver.

16. The method of claim 15, wherein, The components include one or more of the following: filters, switches, wiring, and antenna implementations.

17. The method of any one of claims 10 to 16, wherein, The method includes: - Receive (S203) reference signal from the WD.

18. The method of any one of claims 10 to 17, wherein, The method includes: - Based on the calibrated measurement value of the reference signal, one or more of the pre-encoder and scheduler are used (S206) to communicate with the WD.

19. The method of claim 18, wherein, The application (S206) includes: precoding the communication with the WD based on the calibrated measurement value of the reference signal (S206A).

20. The method of any one of claims 18-19, wherein, The application (S206) includes: scheduling (S206B) communication with the WD based on the calibrated measurement value of the reference signal.

21. A wireless device comprising a memory circuit, a processor circuit, and a wireless interface, wherein, The wireless device is configured to perform any one of the methods according to any one of claims 1 to 9.

22. A radio network node comprising a memory circuit, a processor circuit and a wireless interface, wherein, The radio network node is configured to perform any one of the methods according to any one of claims 10 to 20.

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