A method and device for obtaining path loss, a communication device and a medium

Abstract

The embodiments of the present application provide a method and device for obtaining path loss, a communication device and a medium, and a terminal device can obtain the path loss between the terminal device and the network device. Among them, a method for obtaining path loss includes: obtaining a first transmission power estimation result corresponding to a first signal and a second transmission power estimation result corresponding to a second signal, the first signal is a signal sent by the terminal device to the first network device, and the second signal is a signal sent by the terminal device to the second network device; sending first power information to the first network device and / or the second network device, the first power information is determined according to the first transmission power estimation result and the second transmission power estimation result; receiving first information from the first network device, the first information is used to indicate the difference between the first path loss and the second path loss, the first path loss is the path loss between the first network device and the terminal device, and the second path loss is the path loss between the second network device and the terminal device.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for obtaining path loss, a communication device and a medium. Background Art

[0002] In the current 3rd Generation Partnership Project (3GPP), for the Multiple Input Multiple Output (MIMO) evolution scenario, there is interaction between multiple transmission receiving points (TRP) and user equipment (UE). For example, the primary TRP sends a downlink signal, the secondary TRP does not send a downlink signal, the UE receives the downlink signal sent by the primary TRP, and the primary TRP and the secondary TRP receive the uplink signal sent by the UE.

[0003] In the above MIMO evolution scenario, the UE calculates the transmission power of the uplink signal based on the path loss, which is referred to as path loss for short. The path loss is mainly obtained by the UE measuring the downlink signal sent by the main TRP. Since the auxiliary TRP does not send downlink signals, the UE cannot measure the path loss between multiple TRPs and the UE. Summary of the invention

[0004] The present application provides a method and device for obtaining path loss, a communication device and a medium, so that a terminal device can obtain the path loss between the terminal device and a first network device and a second network device.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A first aspect of the present application provides a method for obtaining a path loss, which is applied to a terminal device. The method includes:

[0007] Obtain a first transmit power estimation result corresponding to a first signal and a second transmit power estimation result corresponding to a second signal, wherein the first signal is a signal sent by the terminal device to the first network device, and the second signal is a signal sent by the terminal device to the second network device;

[0008] Sending first power information to the first network device and / or the second network device, where the first power information is determined according to the first transmit power estimation result and the second transmit power estimation result;

[0009] Receive first information from the first network device, the first information is used to indicate a difference between a first path loss and a second path loss, the first path loss is the path loss between the first network device and the terminal device, and the second path loss is the path loss between the second network device and the terminal device.

[0010] In the above scheme, the terminal device determines the first power information based on the first sending power estimation result and the second sending power estimation result, and the terminal device sends the first power information to the first network device and / or the second network device, so that the first network device can receive the first power information. In addition, the first network device obtains the first receiving power estimation result corresponding to the first signal and the second receiving power estimation result corresponding to the second signal. Therefore, the first network device obtains the first information based on the first receiving power estimation result, the second receiving power estimation result and the first power information, the first network device sends the first information to the terminal device, the terminal device receives the first information from the first network device, and the terminal device determines the difference between the first path loss and the second path loss based on the first information, and the terminal device can obtain the path loss between the terminal device and the network device.

[0011] In some possible implementations, obtaining a first transmit power estimation result corresponding to the first signal and a second transmit power estimation result corresponding to the second signal includes:

[0012] Sending the first signal to the first network device, and determining the first transmit power estimation result according to a first filter coefficient corresponding to the first signal;

[0013] as well as,

[0014] A second signal is sent to the second network device, and the second transmission power estimation result is determined according to a second filter coefficient corresponding to the second signal.

[0015] In the above solution, the terminal device sends a first signal to the first network device, and the terminal device obtains a first filter coefficient corresponding to the first signal, the first filter coefficient is a coefficient used by the terminal device to filter the first signal, and the terminal device uses the first filter coefficient to generate a first transmit power estimation result. Similarly, the terminal device sends a second signal to the second network device, and the terminal device obtains a second filter coefficient corresponding to the second signal, the second filter coefficient is a coefficient used by the terminal device to filter the second signal.

[0016] In some possible implementations, the method further includes:

[0017] A first filter coefficient corresponding to the first signal and a second filter coefficient corresponding to the second signal sent by the first network device are received.

[0018] In the above scheme, the terminal device can obtain the first filter coefficient and the second filter coefficient from the first network device. The terminal device can use the first filter coefficient to filter the first signal and use the second filter coefficient to filter the second signal, so that the terminal device can obtain the first transmission power estimation result and the second transmission power estimation result.

[0019] In some possible implementations, determining a first transmit power estimation result of the first signal according to a first filter coefficient corresponding to the first signal includes:

[0020] The first transmission power corresponding to the first signal is filtered according to the first filter coefficient to obtain the first transmission power estimation result.

[0021] In the above scheme, the terminal device obtains the first transmission power corresponding to the first signal, which is the transmission power of the first signal sent by the terminal device. Since the network device measures and filters the first signal sent by the terminal device to improve the measurement accuracy, the terminal device cannot simply report the transmission power of the first signal, but needs to perform the same filtering on the transmission power of the first signal to obtain the filtered first transmission power estimation result.

[0022] In some possible implementations, the first transmit power corresponds to a latest reference signal transmission opportunity that is an interval of a first time period before a reporting time of the first power information.

[0023] In the above scheme, for the alignment of the terminal device and the network device, the first transmit power of the first signal corresponds to the most recent reference signal transmission opportunity before the first time period before the reporting time of the first power information. The terminal device transmits the first power information at the reporting time of the first power information, and obtains the first transmit power of the first signal based on the most recent reference signal transmission opportunity before the first time period before the reporting time, and the first time period may be a protection interval.

[0024] In some possible implementations, the number of the first signals is N, where N is a positive integer;

[0025] The obtaining a first transmit power estimation result corresponding to the first signal includes:

[0026] Determine N first sub-transmit power estimation results according to the first filter coefficients corresponding to the N first signals;

[0027] A weighted average is performed on the N first sub-transmit power estimation results to obtain the first transmit power estimation result.

[0028] In the above scheme, the terminal device may send N first signals and obtain first filter coefficients corresponding to the N first signals, and the first filter coefficients corresponding to the N first signals may be the same or different. The N signals are filtered according to the first filter coefficients corresponding to the N first signals to obtain N first sub-transmit power estimation results. After obtaining the N first sub-transmit power estimation results, the first transmit power estimation result can be obtained by weighted averaging the N first sub-transmit power estimation results.

[0029] In some possible implementations, the first power information includes: the first transmit power estimation result and the second transmit power estimation result;

[0030] or,

[0031] The first power information includes: a difference between the first transmit power estimation result and the second transmit power estimation result.

[0032] In the above scheme, the terminal device sends the first power information to the first network device and / or the second network device, and the first power information includes the first transmit power estimation result and the second transmit power estimation result, so that the first network device and / or the second network device can obtain the first transmit power estimation result and the second transmit power estimation result. Alternatively, the terminal device obtains the difference between the first transmit power estimation result and the second transmit power estimation result to obtain the first power information, and the terminal device sends the first power information to the first network device and / or the second network device, so that the first network device and / or the second network device can obtain the difference between the first transmit power estimation result and the second transmit power estimation result.

[0033] In some possible implementations, the method further includes:

[0034] The second path loss is determined according to the first path loss and the first information.

[0035] In the above scheme, the first network device communicates with the terminal device, and the first network device obtains the first path loss. For example, the terminal device receives a third signal from the first network device; the terminal device determines a third receiving power estimation result of the third signal according to a third filter coefficient corresponding to the third signal; the terminal device determines the first path loss according to the third receiving power estimation result and the transmitting power corresponding to the third signal, and the transmitting power corresponding to the third signal is sent by the first network device to the terminal device.

[0036] A second aspect of the present application provides a method for obtaining a path loss, which is applied to a first network device, and the method includes:

[0037] Obtain a first received power estimation result corresponding to a first signal and a second received power estimation result corresponding to a second signal, wherein the first signal is a signal sent by the terminal device to the first network device, and the second signal is a signal sent by the terminal device to the second network device;

[0038] Receiving first power information from the terminal device, where the first power information is determined by the terminal device according to the first transmit power estimation result and the second transmit power estimation result;

[0039] Obtain first information according to the first received power estimation result, the second received power estimation result, and the first power information, wherein the first information is used to indicate a difference between a first path loss and a second path loss, wherein the first path loss is a path loss between the first network device and the terminal device, and the second path loss is a path loss between the second network device and the terminal device;

[0040] Sending the first information to the terminal device.

[0041] In the above scheme, the first network device obtains a first receiving power estimation result corresponding to the first signal and a second receiving power estimation result corresponding to the second signal. The first network device can also obtain first power information from the terminal device. Therefore, the first network device obtains the first information based on the first receiving power estimation result, the second receiving power estimation result and the first power information. The first network device sends the first information to the terminal device so that the terminal device receives the first information from the first network device. The terminal device determines the difference between the first path loss and the second path loss based on the first information, and the terminal device can obtain the path loss between the terminal device and the network device.

[0042] In some possible implementations, obtaining a first received power estimation result corresponding to the first signal includes:

[0043] Receiving the first signal from a terminal device;

[0044] The first receiving power estimation result is determined according to a first filter coefficient corresponding to the first signal.

[0045] In the above solution, the terminal device sends a first signal to the first network device, and the first network device obtains a first filter coefficient corresponding to the first signal, where the first filter coefficient is a coefficient used by the first network device to filter the first signal, for example, the first filter coefficient may be the aforementioned filter coefficient. The first network device generates a first received power estimation result using the first filter coefficient.

[0046] In some possible implementations, the obtaining a second received power estimation result corresponding to the second signal includes:

[0047] receiving a second received power estimation result sent by the second network device, where the second received power estimation result is a received power estimation result determined by the second network device according to a second filter coefficient corresponding to the second signal;

[0048] or,

[0049] receiving the second signal sent by the second network device;

[0050] The second receiving power estimation result is determined according to a second filter coefficient corresponding to the second signal.

[0051] In the above scheme, the terminal device may send a first signal to the first network device, for example, the first signal may be a first uplink reference signal. The first network device receives the first signal and estimates the received power of the first signal to obtain a first received power estimation result corresponding to the first signal. The terminal device may send a second signal to the second network device, for example, the second signal may be a second uplink reference signal. The second network device receives the second signal and estimates the received power of the second signal to obtain a second received power estimation result corresponding to the second signal, and the second network device may send the second received power estimation result to the first network device.

[0052] In some possible implementations, the method further includes:

[0053] Sending a first filter coefficient corresponding to the first signal and a second filter coefficient corresponding to the second signal to the terminal device.

[0054] In the above scheme, the first network device can obtain the first filter coefficient corresponding to the first signal, for example, the first filter coefficient is the coefficient used by the first network device to filter the first signal. The first network device can also obtain the second filter coefficient corresponding to the second signal, the second filter coefficient is the coefficient used by the second network device to filter the second signal, the second network device cannot send the second filter coefficient to the terminal device, the second network device sends the second filter coefficient to the first network device, and the first network device sends the second filter coefficient corresponding to the second signal to the terminal device. In the embodiment of the present application, the terminal device can obtain the first filter coefficient and the second filter coefficient from the first network device, the terminal device can use the first filter coefficient to filter the first signal, and use the second filter coefficient to filter the second signal, so that the terminal device can send the first power estimation result and the second power estimation result.

[0055] In some possible implementations, the number of the first signals is N, where N is a positive integer;

[0056] The determining the first received power estimation result according to the first filter coefficient corresponding to the first signal includes:

[0057] Determine N first sub-received power estimation results according to the first filter coefficients corresponding to the N first signals;

[0058] Perform weighted averaging on the N first sub-received power estimation results to obtain the first received power estimation result.

[0059] In the above scheme, the terminal device can send N first signals, the first network device can receive N first signals, and the first network device obtains the first filter coefficients corresponding to the N first signals, and the first filter coefficients corresponding to the N first signals can be the same or different. The N signals are filtered according to the first filter coefficients corresponding to the N first signals to obtain N first sub-received power estimation results. After obtaining the N first sub-received power estimation results, the first received power estimation result can be obtained by weighted averaging the N first sub-received power estimation results.

[0060] In some possible implementations, determining the first received power estimation result according to a first filter coefficient corresponding to the first signal includes:

[0061] The first receiving power corresponding to the first signal is filtered according to the first filtering coefficient to obtain the first receiving power estimation result.

[0062] In the above scheme, the terminal device obtains the first transmission power corresponding to the first signal, which is the transmission power of the first signal sent by the terminal device. Since the network device measures and filters the first signal sent by the terminal device to improve the measurement accuracy, the terminal device cannot simply report the transmission power of the first signal, but needs to perform the same filtering on the transmission power of the first signal to obtain the filtered first transmission power estimation result.

[0063] A third aspect of the present application provides a terminal device, the terminal device comprising:

[0064] A processing module, configured to obtain a first transmit power estimation result corresponding to a first signal and a second transmit power estimation result corresponding to a second signal, wherein the first signal is a signal sent by the terminal device to the first network device, and the second signal is a signal sent by the terminal device to the second network device;

[0065] a sending module, configured to send first power information to the first network device and / or the second network device, where the first power information is determined according to the first transmit power estimation result and the second transmit power estimation result;

[0066] A receiving module is used to receive first information from the first network device, where the first information is used to indicate a difference between a first path loss and a second path loss, where the first path loss is the path loss between the first network device and the terminal device, and the second path loss is the path loss between the second network device and the terminal device.

[0067] A fourth aspect of the present application provides a network device, wherein the network device is specifically a first network device, and the first network device includes:

[0068] A processing module, configured to obtain a first received power estimation result corresponding to a first signal and a second received power estimation result corresponding to a second signal, wherein the first signal is a signal sent by the terminal device to the first network device, and the second signal is a signal sent by the terminal device to the second network device;

[0069] A receiving module, configured to receive first power information from the terminal device, where the first power information is determined by the terminal device according to the first transmit power estimation result and the second transmit power estimation result;

[0070] The processing module is used to obtain first information according to the first received power estimation result, the second received power estimation result and the first power information, wherein the first information is used to indicate a difference between a first path loss and a second path loss, the first path loss is a path loss between the first network device and the terminal device, and the second path loss is a path loss between the second network device and the terminal device;

[0071] A sending module is used to send the first information to the terminal device.

[0072] The fifth aspect of the present application provides a communication device, comprising: a memory and at least one processor. The memory is used to store programs or computer instructions, and the at least one processor is used to execute the computer program or computer instructions stored in the memory, so that the communication device implements the method provided in the first aspect or the second aspect of the present application.

[0073] The sixth aspect of the present application provides a computer storage medium for storing a computer program. When the computer program is executed, it is used to implement the method provided in the first aspect or the second aspect of the present application.

[0074] The seventh aspect of the present application provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the method provided in the first or second aspect above.

[0075] The eighth aspect of the present application provides a chip system, which includes a processor for supporting a terminal device or a network device to implement the functions involved in the above aspects, for example, sending or processing the data and / or information involved in the above methods. In one possible design, the chip system also includes a memory, which is used to store program instructions and data necessary for the terminal device or the network device. The chip system can be composed of chips, or it can include chips and other discrete devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] Figure 1 A schematic diagram of a system architecture of a communication system provided in an embodiment of the present application;

[0077] Figure 2 A schematic diagram of a deployment scenario of a downlink single transceiver node and an uplink multiple transceiver nodes provided in an embodiment of the present application;

[0078] Figure 3 A schematic diagram of a process of interaction between a terminal device and a first network device and a second network device provided in an embodiment of the present application;

[0079] Figure 4 A schematic diagram of estimating path loss based on uplink signal measurement provided in an embodiment of the present application;

[0080] Figure 5 A schematic diagram of the corresponding relationship between the transmit power and the receive power of the uplink reference signal opportunity provided in an embodiment of the present application;

[0081] Figure 6 A timing diagram of the reporting time of sending the first power information and the first signal provided in an embodiment of the present application;

[0082] Figure 7 This is a structural example diagram of an electronic device disclosed in an embodiment of the present application;

[0083] Figure 8 This is a structural example diagram of another electronic device disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0084] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be used as limitations on the present application. As used in the specification and the appended claims of the present application, the singular expressions "one", "a kind", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context. It should also be understood that in the embodiments of the present application, "one or more" refers to one, two or more; "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0085] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0086] The multiple involved in the embodiments of the present application means greater than or equal to two. It should be noted that in the description of the embodiments of the present application, the words "first", "second", etc. are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order.

[0087] The embodiments of the present application are applied to a communication system, which may be a second generation (2G) communication system, a third generation (3G) communication system, an LTE system, a fifth generation (5G) communication system, an LTE and 5G hybrid architecture, a 5G new wireless (5G New Radio, 5G NR) system, and new communication systems that will emerge in future communication developments.

[0088] The communication system includes a first device, a second device, and a third device. The first device and the third device may be devices on the network side for providing network communication functions, which are also referred to as network devices or network elements in some cases. The network device may generally be a base station (including functional units of a base station, or a combination of functional units of a base station) or a core network unit, wherein the core network unit may be a functional unit in the core network, including but not limited to an access and mobility management function (AMF) unit or a session management function (SMF) unit. The second device may be a device for accessing the network, which may generally be a terminal. An example of a communication system is Figure 1 As shown, Figure 1 The system includes base station 1, terminal 2 and base station 3.

[0089] In the embodiments provided in the present application, the base station may be any device having a wireless transceiver function, including but not limited to: an evolved base station (NodeB or eNB or e-NodeB, evolutionary Node B) in long term evolution (LTE), a base station (gNodeB or gNB) or a transmission receiving point / transmission reception point (TRP) in new radio (NR), a base station of subsequent evolution of 3GPP, an access node in a Wi-Fi system, a wireless relay node, a wireless backhaul node, etc. The base station may be: a macro base station, a micro base station, a micro-micro base station, a small station, a relay station, or a balloon station, etc. The base station may include one or more co-site or non-co-site transmission points (Transmission Reception Point, TRP). The base station may also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The base station may communicate with the terminal, or communicate with the terminal through a relay station. The terminal can communicate with multiple base stations of different technologies. For example, the terminal can communicate with a base station supporting an LTE network, and can also communicate with a base station supporting a 5G network. The terminal can also establish dual connections with a base station supporting an LTE network and a base station supporting a 5G network.

[0090] For example, Figure 1As shown, base station 1 can be the master TRP and base station 2 can be the slave TRP. The Multi-Input Multi-Output evolution supports the deployment of downlink single transceiver node (DL single-TRP) and uplink multi-transceiver node (UL multi-TRP), as shown in FIG. Figure 2 As shown, the UE receives a downlink (DL) signal sent by the transmission receiving point TRP1, and TRP1 and / or TRP2 receive an uplink (UL) signal sent by the UE, wherein the above-mentioned TRP1 is a main TRP and the above-mentioned TRP2 is a secondary TRP.

[0091] In the above DL single-TRP & UL multi-TRP deployment scenario, by deploying a secondary TRP that receives UL signals, UL coverage and capacity can be improved. In addition, the secondary TRP does not send DL signals to achieve network-side energy saving.

[0092] In the embodiments provided in the present application, the terminal may be in various forms, for example, a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a vehicle-mounted terminal device, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a wearable terminal device, etc. The terminal may also be sometimes referred to as a terminal device, a user equipment (UE), an access terminal device, a vehicle-mounted terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a UE terminal device, a terminal device, a wireless communication device, a UE agent or a UE device, etc. The terminal may also be a fixed terminal or a mobile terminal.

[0093] According to the current protocol, the transmission power of the Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), and Sounding Reference Signal (SRS) depends on the path loss.

[0094] Taking PUSCH as an example, the transmit power of PUSCH is determined by the following formula, where: is the path loss between UE and base station.

[0095]

[0096] in, is the transmit power at PUSCH transmission opportunity #i on active ULBWP #b on carrier #f of cell #c,

[0097] is the configured maximum transmit power of the UE,

[0098] is the open-loop operating point of PUSCH power control, which refers to the expected received power.

[0099] is the number of resource blocks (RBs) of PUSCH,

[0100] is the subcarrier spacing,

[0101] is the line loss reference signal #q d The road loss measured on

[0102] is the path loss compensation factor,

[0103] is the transmission format compensation factor,

[0104] It is the closed-loop power control adjustment value of PUSCH.

[0105] At present, the path loss is mainly obtained by the UE measuring the DL signal sent by the network side. Specifically, the UE measures multiple synchronization signal blocks (SSB) or channel state information reference signals (CSI-RS) sent by the network side, and performs L3 filtering to obtain an estimate of the signal received power F. n ,in,

[0106]

[0107] Among them, M n is the signal receiving power measured at the current occasion, F n is the measurement result after L3 filtering, F n-1 The measurement result after the last L3 filter, F0=M1, a = 1 / 2 (k / 4) is the filter coefficient, where k is configured by the network side.

[0108] Then, the UE estimates the received power of the DL signal based on F n The path loss is obtained by summing the transmission power of the DL signal, where the transmission power of the DL signal is configured by the network side.

[0109] for Figure 2 In the DL single-TRP and UL multi-TRP deployment shown, the UE can measure the path loss between TRP1 and the UE based on the DL signal sent by TRP1. However, TRP2 does not send DL signals, so the UE cannot measure the path loss between TRP2 and the UE. In order to obtain the path loss between TRP2 and the UE, the network side can measure the UL signal (such as SRS) sent by the UE to obtain the difference between the path loss between TRP1 and the UE and the path loss between TRP2 and the UE. , for example, through the following formula .

[0110]

[0111] Then, the network side uses the path loss difference Send to UE, so that UE can Calculate the path loss of TRP2.

[0112] Since the path losses between the UE and TRP1 and TRP2 are different, in order to ensure the reliability of UL signal measurement, TRP1 and TRP2 need to measure different UL signals sent by the UE. Figure 2For example, the path loss between TRP1 and UE is large, so the UL signal transmission power is required to be high to ensure that the UL signal reaches a certain power level when it reaches TRP1, so as to ensure the accuracy of the UL measurement results. The path loss between TRP2 and UE is small, so the UL signal transmission power does not need to be very high, and it can reach a certain power level when it reaches TRP2. Although from the perspective of UL measurement reliability, too high UL signal power can be used, but from the perspective of interference, too high UL signal power will interfere with the UL signals of other users in this TRP and the UL signals of users in neighboring cells. Therefore, TRP1 and TRP2 need to measure the uplink reference signals (UL RS) with different power levels sent by the UE respectively, and due to the requirements of power control, the transmission power Tx power of these UL RS will change continuously, and the network side cannot determine the transmission power of these UL RS in time.

[0113] To this end, an embodiment of the present application provides a path loss estimation method applicable to DL single-TRP and UL multi-TRP scenarios.

[0114] See also Figure 3 As shown, it is a schematic diagram of an interaction process between a terminal device and a first network device and a second network device provided in an embodiment of the present application, which mainly includes the following steps:

[0115] 301. A terminal device obtains a first transmit power estimation result corresponding to a first signal and a second transmit power estimation result corresponding to a second signal.

[0116] The first signal is a signal sent by the terminal device to the first network device, and the second signal is a signal sent by the terminal device to the second network device.

[0117] In an embodiment of the present application, a terminal device can communicate with at least two network devices, for example, the at least two network devices include a first network device and a second network device, the first network device can send a downlink signal, the second network device does not send a downlink signal, and the first network device and the second network device can both receive an uplink signal from the terminal device. For example, the first network device can be a master TRP, and the second network device can be a slave TRP.

[0118] The terminal device may send a first signal to the first network device. For example, the first signal may be a first uplink reference signal (UL RS). Since the transmission power of the first signal is constantly changing due to power control, the terminal device may estimate the transmission power of the first signal. The terminal device obtains the transmission power estimation result of the corresponding first signal to obtain the first transmission power estimation result.

[0119] The terminal device may send a second signal to the second network device, for example, the second signal may be a second uplink reference signal. Since the transmit power of the second signal is constantly changing due to power control, the terminal device may perform transmit power estimation on the second signal, and the terminal device obtains the transmit power estimation result of the corresponding second signal to obtain a second transmit power estimation result.

[0120] In some embodiments of the present application, step 301, in which the terminal device obtains a first transmit power estimation result corresponding to the first signal and a second transmit power estimation result corresponding to the second signal, includes:

[0121] A1. The terminal device sends a first signal to the first network device, and determines a first transmission power estimation result according to a first filter coefficient corresponding to the first signal;

[0122] as well as,

[0123] A2. The terminal device sends a second signal to the second network device, and determines a second transmission power estimation result according to a second filter coefficient corresponding to the second signal.

[0124] The terminal device sends a first signal to the first network device, and the terminal device obtains a first filter coefficient corresponding to the first signal. The first filter coefficient is a coefficient used by the terminal device to filter the first signal. For example, the first filter coefficient may be the aforementioned filter coefficient, for example, the filter coefficient is a = 1 / 2 (k / 4) The terminal device generates a first transmit power estimation result using the first filter coefficient.

[0125] Similarly, the terminal device sends a second signal to the second network device, and the terminal device obtains a second filter coefficient corresponding to the second signal, where the second filter coefficient is a coefficient used by the terminal device to filter the second signal.

[0126] Furthermore, in some embodiments of the present application, the path loss acquisition method performed by the terminal device may further include the following steps:

[0127] B1. The terminal device receives a first filter coefficient corresponding to a first signal sent by a first network device, and a second filter coefficient corresponding to a second signal.

[0128] Among them, the first network device can obtain the first filter coefficient corresponding to the first signal, for example, the first filter coefficient is the coefficient used by the first network device to filter the first signal. The first network device can also obtain the second filter coefficient corresponding to the second signal, the second filter coefficient is the coefficient used by the second network device to filter the second signal, the second network device cannot send the second filter coefficient to the terminal device, the second network device sends the second filter coefficient to the first network device, and the first network device sends the second filter coefficient corresponding to the second signal to the terminal device. In the embodiment of the present application, the terminal device can obtain the first filter coefficient and the second filter coefficient from the first network device, the terminal device can use the first filter coefficient to filter the first signal, and use the second filter coefficient to filter the second signal, so that the terminal device can send the first power estimation result and the second power estimation result.

[0129] In some embodiments of the present application, the A1 terminal device determines a first transmit power estimation result of the first signal according to a first filter coefficient corresponding to the first signal, including:

[0130] A11. The terminal device filters the first transmission power corresponding to the first signal according to the first filter coefficient to obtain a first transmission power estimation result.

[0131] Among them, the terminal device obtains the first transmission power corresponding to the first signal, and the first transmission power is the transmission power of the first signal sent by the terminal device. Since the network device measures and filters the first signal sent by the terminal device to improve the measurement accuracy, the terminal device cannot simply report the transmission power of the first signal, but needs to perform the same filtering on the transmission power of the first signal to obtain the filtered first transmission power estimation result.

[0132] An example is given below, filtering the first signal according to the first filter coefficient, including: estimating the transmit power of the current filtering according to the first transmit power, the first filter coefficient and the transmit power estimation result after the previous filtering. When filtering the first signal, in addition to using the first transmit power and the first filter coefficient, the terminal device also needs to use the transmit power estimation result after the previous filtering to estimate the transmit power of the current filtering, so that the transmit power estimation result can be accurately obtained.

[0133] In some embodiments of the present application, the number of first signals is N, where N is a positive integer, for example, the value of N is 2 or greater than 2;

[0134] 301 The terminal device obtains a first transmission power estimation result corresponding to the first signal, including:

[0135] C1. The terminal device determines N first sub-transmit power estimation results according to the first filter coefficients corresponding to the N first signals;

[0136] C2. The terminal device performs weighted averaging on the N first sub-transmit power estimation results to obtain a first transmit power estimation result.

[0137] Among them, the terminal device can send N first signals, obtain the first filter coefficients corresponding to the N first signals, and the first filter coefficients corresponding to the N first signals can be the same or different. The N signals are filtered according to the first filter coefficients corresponding to the N first signals to obtain N first sub-transmit power estimation results. After obtaining the N first sub-transmit power estimation results, the first transmit power estimation result can be obtained by weighted averaging the N first sub-transmit power estimation results.

[0138] 302. The terminal device sends first power information to the first network device and / or the second network device.

[0139] The first power information is determined according to the first transmit power estimation result and the second transmit power estimation result.

[0140] Specifically, after obtaining the first transmit power estimation result and the second transmit power estimation result, the terminal device may indicate first power information to the network device side, where the first power information indicates the transmit power estimation result generated by the terminal device. For example, the network device side includes the first network device and / or the second network device. For example, the first power information may specifically be the transmit power estimation result generated by the terminal device, or the first power information may specifically indicate a mapping value of the transmit power estimation result generated by the terminal device.

[0141] In some embodiments of the present application, the first power information includes: a first transmit power estimation result and a second transmit power estimation result;

[0142] or,

[0143] The first power information includes: a difference between a first transmit power estimation result and a second transmit power estimation result.

[0144] Among them, the terminal device sends first power information to the first network device and / or the second network device, and the first power information includes a first transmit power estimation result and a second transmit power estimation result, so that the first network device and / or the second network device can obtain the first transmit power estimation result and the second transmit power estimation result.

[0145] Alternatively, the terminal device obtains the difference between the first transmit power estimation result and the second transmit power estimation result to obtain the first power information, and the terminal device sends the first power information to the first network device and / or the second network device, so that the first network device and / or the second network device can obtain the difference between the first transmit power estimation result and the second transmit power estimation result.

[0146] In some embodiments of the present application, the first transmit power corresponds to the most recent reference signal transmission opportunity that is an interval of a first time period before the reporting time of the first power information.

[0147] In order to align the terminal device and the network device, the first transmit power of the first signal corresponds to the most recent reference signal transmission opportunity before the first time period before the reporting time of the first power information. The terminal device transmits the first power information at the reporting time of the first power information, and obtains the first transmit power of the first signal based on the most recent reference signal transmission opportunity before the first time period before the reporting time, and the first time period may be a protection interval.

[0148] For example, Figure 6 As shown, the first signal sent by the terminal device belongs to opportunity set 1. The terminal device sends the first power information at the reporting time of the first power information, and determines the first signal Sn corresponding to the most recent reference signal sending opportunity based on a first time period T before the reporting time. Similarly, the second signal sent by the terminal device belongs to opportunity set 2. The terminal device sends the first power information at the reporting time of the first power information, and determines the second signal Mn corresponding to the most recent reference signal sending opportunity based on a first time period T before the reporting time.

[0149] 311. The first network device obtains a first received power estimation result corresponding to the first signal and a second received power estimation result corresponding to the second signal.

[0150] The first signal is a signal sent by the terminal device to the first network device, and the second signal is a signal sent by the terminal device to the second network device.

[0151] In an embodiment of the present application, the terminal device can send a first signal to a first network device, and the terminal device can send a second signal to a second network device. The first network device can perform receiving power estimation for the first signal and the second signal to obtain a first receiving power estimation result and a second receiving power estimation result, respectively.

[0152] In some embodiments of the present application, 311, the first network device obtains a first received power estimation result corresponding to the first signal, including:

[0153] D1. The first network device receives a first signal from the terminal device;

[0154] D 2. The first network device determines a first received power estimation result according to a first filter coefficient corresponding to the first signal.

[0155] The terminal device sends a first signal to the first network device, and the first network device obtains a first filter coefficient corresponding to the first signal. The first filter coefficient is a coefficient used by the first network device to filter the first signal. For example, the first filter coefficient may be the aforementioned filter coefficient, for example, the filter coefficient is a = 1 / 2 (k / 4) The first network device generates a first received power estimation result using the first filter coefficient.

[0156] Further, in some embodiments of the present application, 311, the first network device obtains a second received power estimation result corresponding to the second signal, including:

[0157] E1. The first network device receives a second received power estimation result sent by the second network device, where the second received power estimation result is a received power estimation result determined by the second network device according to a second filter coefficient corresponding to the second signal;

[0158] or,

[0159] E2. The first network device receives a second signal sent by the second network device;

[0160] E3. The first network device determines a second received power estimation result according to a second filter coefficient corresponding to the second signal.

[0161] In an embodiment of the present application, the terminal device may send a first signal to the first network device, for example, the first signal may be a first uplink reference signal. The first network device receives the first signal and estimates the received power of the first signal to obtain a first received power estimation result corresponding to the first signal.

[0162] The terminal device may send a second signal to the second network device, for example, the second signal may be a second uplink reference signal. The second network device receives the second signal and estimates the received power of the second signal to obtain a second received power estimation result corresponding to the second signal, and the second network device may send the second received power estimation result to the first network device.

[0163] Furthermore, in some embodiments of the present application, the path loss acquisition method performed by the first network device may further include the following steps:

[0164] F1. The first network device sends a first filter coefficient corresponding to a first signal and a second filter coefficient corresponding to a second signal to a terminal device.

[0165] Among them, the first network device can obtain the first filter coefficient corresponding to the first signal, for example, the first filter coefficient is the coefficient used by the first network device to filter the first signal. The first network device can also obtain the second filter coefficient corresponding to the second signal, the second filter coefficient is the coefficient used by the second network device to filter the second signal, the second network device cannot send the second filter coefficient to the terminal device, the second network device sends the second filter coefficient to the first network device, and the first network device sends the second filter coefficient corresponding to the second signal to the terminal device. In the embodiment of the present application, the terminal device can obtain the first filter coefficient and the second filter coefficient from the first network device, the terminal device can use the first filter coefficient to filter the first signal, and use the second filter coefficient to filter the second signal, so that the terminal device can send the first power estimation result and the second power estimation result.

[0166] Further, in some embodiments of the present application, the number of first signals is N, where N is a positive integer;

[0167] 311 The first network device determines a first received power estimation result according to a first filter coefficient corresponding to the first signal, including:

[0168] G1. The first network device determines N first sub-received power estimation results according to the first filter coefficients corresponding to the N first signals;

[0169] G2. The first network device performs weighted averaging on the N first sub-received power estimation results to obtain a first received power estimation result.

[0170] Among them, the terminal device can send N first signals, the first network device can receive N first signals, and the first network device obtains the first filter coefficients corresponding to the N first signals, and the first filter coefficients corresponding to the N first signals can be the same or different. The N signals are filtered according to the first filter coefficients corresponding to the N first signals to obtain N first sub-received power estimation results. After obtaining the N first sub-received power estimation results, the first received power estimation result can be obtained by weighted averaging the N first sub-received power estimation results.

[0171] Further, in some embodiments of the present application, the D1 first network device determines a first received power estimation result according to a first filter coefficient corresponding to the first signal, including:

[0172] D11. The first network device performs filtering processing on the first receiving power corresponding to the first signal according to the first filtering coefficient to obtain a first receiving power estimation result.

[0173] Among them, the terminal device obtains the first transmission power corresponding to the first signal, and the first transmission power is the transmission power of the first signal sent by the terminal device. Since the network device measures and filters the first signal sent by the terminal device to improve the measurement accuracy, the terminal device cannot simply report the transmission power of the first signal, but needs to perform the same filtering on the transmission power of the first signal to obtain the filtered first transmission power estimation result.

[0174] An example is given below, filtering the first received power according to the first filter coefficient, including: estimating the received power of the current filtering according to the first received power, the first filter coefficient and the received power estimation result after the previous filtering. When the network device filters the first signal, in addition to using the first received power and the first filter coefficient, it is also necessary to use the received power estimation result after the previous filtering to estimate the received power of the current filtering, so that the received power estimation result can be accurately obtained.

[0175] 312. The first network device receives first power information from the terminal device.

[0176] The first power information is determined by the terminal device based on the first transmit power estimation result and the second transmit power estimation result.

[0177] In an embodiment of the present application, the first network device may interact with the terminal device to receive the first power information, or the first network device may interact with the second network device to receive the first power information from the terminal device through the second network device.

[0178] 313. The first network device obtains first information according to the first received power estimation result, the second received power estimation result, and the first power information.

[0179] The first information is used to indicate a difference between a first path loss and a second path loss, the first path loss is a path loss between the first network device and the terminal device, and the second path loss is a path loss between the second network device and the terminal device.

[0180] In an embodiment of the present application, the first network device obtains a first received power estimation result and a second received power estimation result. The first network device also obtains first power information sent by the terminal device. The first network device performs path loss calculation based on the first received power estimation result, the second received power estimation result and the first power information to obtain first information. The first information is used to indicate the difference between the first path loss and the second path loss. The first path loss is the path loss between the first network device and the terminal device, and the second path loss is the path loss between the second network device and the terminal device.

[0181] 314. The first network device sends first information to the terminal device.

[0182] 303. The terminal device receives first information from the first network device.

[0183] The first information is used to indicate a difference between a first path loss and a second path loss, the first path loss is a path loss between a first network device and a terminal device, and the second path loss is a path loss between a second network device and a terminal device.

[0184] For example, the first information may be path loss difference information. The first network device sends the path loss difference information to the terminal device. The terminal device receives the path loss difference information and determines the difference between the first path loss and the second path loss according to the path loss difference information.

[0185] In some embodiments of the present application, the path loss acquisition method performed by the terminal device may further include the following steps:

[0186] H1. The terminal device determines a second path loss according to the first path loss and the first information.

[0187] Among them, the first network device communicates with the terminal device, and the first network device obtains the first path loss. For example, the terminal device receives a third signal from the first network device; the terminal device determines a third receiving power estimation result of the third signal according to a third filter coefficient corresponding to the third signal; the terminal device determines the first path loss according to the third receiving power estimation result and the sending power corresponding to the third signal, and the sending power corresponding to the third signal is sent by the first network device to the terminal device.

[0188] It can be seen from the description of the aforementioned embodiments that in the embodiments of the present application, the terminal device determines the first power information based on the first transmit power estimation result and the second transmit power estimation result, and the terminal device sends the first power information to the first network device and / or the second network device, so that the first network device can receive the first power information. In addition, the first network device obtains the first receive power estimation result corresponding to the first signal and the second receive power estimation result corresponding to the second signal. Therefore, the first network device obtains the first information based on the first receive power estimation result, the second receive power estimation result and the first power information, the first network device sends the first information to the terminal device, the terminal device receives the first information from the first network device, the terminal device determines the difference between the first path loss and the second path loss based on the first information, and the terminal device can obtain the path loss between the terminal device and the network device.

[0189] In order to make the technical solution of the present application clearer and easier to understand, the method for obtaining the road loss in the embodiment of the present application is introduced below with reference to the accompanying drawings.

[0190] In the path loss measurement based on DL signals, the transmit power of DL signals remains unchanged. Therefore, the UE only needs to measure the DL signals and perform corresponding L3 filtering to accurately estimate the path loss. In the DL single-TRP and UL multi-TRP scenarios, the estimation of path loss depends on the measurement of UL signals. Since the transmit power of UL signals changes continuously due to power control, in addition to the UL signal measurement on the network side, the UE needs to report the transmit power of the corresponding UL signals to the network side before the path loss can be calculated. Since the network side measures the UL signals at multiple times and performs L3 filtering to improve the measurement accuracy, the UE cannot simply report the transmit power of the UL signal at a certain time or the average of the transmit power of the UL signal at multiple times. Instead, it needs to perform L3 filtering on the transmit power of the UL signals at multiple times and report the filtered transmit power results to the network side so that the network side can calculate the accurate path loss.

[0191] based on Figure 4 As shown, the path loss estimation based on UL signal measurement mainly includes the following processes:

[0192] Step S1: The network side sets the filter coefficient a of one or more uplink reference signal occasions UL RSoccasion set #i of TRP1 and TRP2 i or k i Sent to UE.

[0193] For example, the network side may be implemented by TRP1, and TRP1 may send the filter coefficients through RRC signaling, or through MCACE, or DCI.

[0194] Among them, the uplink reference signal occasion set UL RS occasion sets used by TRP1 and TRP2 can be the same, thereby simplifying the configuration of the uplink reference signal occasion set by the network equipment and saving overhead. Alternatively, the uplink reference signal occasion set UL RS occasion sets used by TRP1 and TRP2 have some uplink reference signal occasions in common, or the uplink reference signal occasion set UL RS occasion sets used by TRP1 and TRP2 include completely different uplink reference signal occasions, thereby ensuring that each TRP uses a more flexible uplink reference signal occasion.

[0195] It can be understood that the filter coefficients a used by different UL RS occasion set #i in the embodiments of the present application are i or k i can be the same, thus simplifying the filter coefficient a i or k iConfiguration method, or filter coefficient a used by different UL RS occasionset #i i or k i Can be different, so as to set the filter coefficient a more flexibly i or k i .

[0196] Step S2: The UE determines the UL RS transmit power estimate according to the transmit power of each UL RS occasions set #i in TRP1 .

[0197] Specifically, step S2 mainly includes the following steps:

[0198] Step S2-1: For each UL RS occasion set #i, determine the UL RS transmit power estimate from the transmit power of the UL RS occasions in the UL RS occasion set #i .

[0199] It can be understood that if only one UL RS occasion set #i is included, the UL RS transmit power estimation It can be equal to the UL RS transmit power estimate If multiple UL RS occasion set #i are included, after obtaining each UL RS occasion set #i, it is necessary to perform weighted averaging on the multiple UL RS occasion set #i to obtain the UL RS transmit power estimation .

[0200] Specifically, using the i-th filter coefficient (a i or k i ) Estimate the transmit power obtained after filtering each UL RS occasion transmit power to obtain the UL RS transmit power estimate , by:

[0201]

[0202] Next, the above The various parameters in the formula are explained as follows:

[0203] represents the transmit power of the most recent UL RS occasion in UL RS occasion set #i, i.e. Indicates the transmission power corresponding to the most recent reference signal transmission opportunity before a time interval before the reporting time, such as Figure 6 Sn shown in .

[0204] Indicates the transmit power result after filtering.

[0205] Indicates the transmit power result after the previous filtering.

[0206] represents the filter coefficients, for example, .

[0207] The UL RS occasion sets and the filter coefficients used by each UL RS occasion set can be notified to the UE in a variety of ways, such as by protocol agreement, pre-configuration, or by the network side configuration or assignment to the UE. The filter coefficients used by different sounding reference signal (SRS) resource sets can be the same or different, and are not limited here.

[0208] Step S2-2: The UE determines the final transmit power estimate based on the transmit power estimate of the UL RS occasion sets selected by TRP1. .

[0209] Specifically, the transmission power of the selected UL RS occasion sets is estimated Determine the final transmit power estimate The method can be to estimate the transmission power of the selected UL RS occasion sets The final transmit power estimate is obtained through weighted combination , for example, the final transmit power estimate is obtained by: :

[0210]

[0211] Where S is the set of selected UL RS occasion sets. Specifically, S can be determined by protocol agreement, network configuration, or UE selection. The coefficient It is agreed by the protocol, configured by the network side, or determined by the UE and then reported to the network side.

[0212] Step S3: The UE determines the UL RS transmit power estimate according to the transmit power of each UL RS occasions set #i in TRP2 .

[0213] In step S3, the UE determines the UL RS transmit power estimate The method is the same as that in step S2 to determine the UL RS transmission power estimate The method is similar to that of step S3, and step S3 will not be described in detail here.

[0214] Step S4: The UE reports the transmit power information to the network side.

[0215] The transmit power information may be the UL RS transmit power of each of multiple TRPs, or the transmit power information may be the difference between multiple TRPs.

[0216] For example, the transmit power information provided in the embodiment of the present application may specifically include: the UL RS transmit power corresponding to TRP1 and the UL RS transmit power corresponding to TRP2. .

[0217] Alternatively, the transmit power information may specifically include: the UL RS transmit power corresponding to TRP1 UL RS transmit power corresponding to TRP2 The difference between .in,

[0218] ;

[0219] or,

[0220] .

[0221] Step S5: TRP1 measures the UL RS occasions in the UL RS occasions sets used by TRP1 to obtain a received power estimate .

[0222] Specifically, step S5 mainly includes the following steps:

[0223] Step S5-1: For each UL RS occasion set #i, obtain a received power estimate from the UL RS occasions in the UL RS occasion set #i .

[0224] Specifically, using the i-th filter coefficient (a i or k i ) Filter the received power measured on each UL RS occasion to obtain the received power estimate , for example by:

[0225]

[0226] Next, the above The various parameters in the formula are explained as follows:

[0227] Indicates the received power result measured on the most recent UL RS occasion in UL RS occasion set #i. Indicates the received power corresponding to the most recent reference signal sending opportunity before a time interval before the reporting time.

[0228] Indicates the received power result after filtering.

[0229] Indicates the received power result after the previous filtering.

[0230] represents the filter coefficients, for example, .

[0231] Step S5-2: TRP1 estimates the received power of multiple UL RS occasion sets , determine the final received power estimate .

[0232] Specifically, the received power of multiple UL RS occasion sets is estimated Determine the final received power estimate The method can be to estimate the received power of multiple UL RS occasion sets The final received power estimate is obtained through weighted combination , for example, the final received power estimate is obtained by: :

[0233]

[0234] Wherein, S is a set of UL RS occasion sets used by TRP1. Specifically, S can be determined by protocol agreement, network configuration, or UE selection. The coefficient is agreed upon by the protocol, or configured by the network side, or determined by the UE and then reported to the network side.

[0235] Step S6: TRP2 measures the UL RS occasions in the UL RS occasions sets used by TRP2 to obtain a received power estimate .

[0236] Among them, in step S6, TRP2 determines the UL RS received power estimate The method is the same as that in step S5 to determine the UL RS received power estimate The method is similar to that of step S6, and step S6 will not be described in detail here.

[0237] Step S7: The network side estimates the received power based on TRP1 and TRP2 , , and the transmit power information reported by the UE in step S4, determine the path loss information, and send the path loss information to the UE.

[0238] TRP2 obtains the received power estimate through step S6 After that, send to TRP1 .

[0239] The road damage information is , which can be determined by:

[0240]

[0241] Or, the road loss information is , which can be determined by:

[0242]

[0243] In the above calculation formula, the auxiliary TRP is taken as an example. It is not limited that in the embodiment of the present application, the auxiliary TRP can also be multiple TRPs. For example, the auxiliary TRP also includes TRP3, and the path loss information between TRP1 and TRP3 is The calculation method is:

[0244]

[0245] or,

[0246]

[0247] As shown in Figure 5, there is a corresponding relationship between the transmission power and reception power measurement estimates of the UL RS occasions in one UL RS occasion set in step S2 and step S4.

[0248] exist Figure 5 middle, , , , is the transmit power of the last four UL RSoccasions in UL RS occasion set #i.

[0249] for The corresponding filtered transmit power result is, for The corresponding filtered transmit power result.

[0250] , , , is the received power of the last four UL RSoccasions in UL RS occasion set #i.

[0251] for The corresponding filtered transmit power result is, for The corresponding filtered transmit power result.

[0252] For example, TRP1 is the main TRP, TRP1 has downlink signal transmission, and the path loss information is ,but

[0253]

[0254] Therefore, TRP2 is the auxiliary TRP, and the path loss of the auxiliary TRP = the path loss of the primary TRP - .

[0255] Or, TRP1 is the main TRP, TRP1 has downlink signal transmission, and the path loss information is ,but

[0256]

[0257] Therefore, TRP2 is the auxiliary TRP, and the path loss of the auxiliary TRP = the path loss of the main TRP + .

[0258] Based on the foregoing examples, it can be seen that in the embodiments of the present application, a specific estimation method for path loss difference is given for DL ​​single-TRP and UL multi-TRP deployment scenarios. It is not only applicable to TRP1 and TRP2 using the same UL RSoccasions for measurement, but also applicable to scenarios where TRP1 and TRP2 use different UL RS occasions for measurement and the Tx power of UL RSoccasions is constantly changing due to power control. This scenario avoids the above limitations and problems.

[0259] The embodiment of the present application further provides a terminal device, the terminal device comprising:

[0260] A processing module, configured to obtain a first transmit power estimation result corresponding to a first signal and a second transmit power estimation result corresponding to a second signal, wherein the first signal is a signal sent by the terminal device to the first network device, and the second signal is a signal sent by the terminal device to the second network device;

[0261] a sending module, configured to send first power information to the first network device and / or the second network device, where the first power information is determined according to the first transmit power estimation result and the second transmit power estimation result;

[0262] A receiving module is used to receive first information from the first network device, where the first information is used to indicate a difference between a first path loss and a second path loss, where the first path loss is the path loss between the first network device and the terminal device, and the second path loss is the path loss between the second network device and the terminal device.

[0263] The embodiment of the present application further provides a network device, wherein the network device is specifically a first network device, and the first network device includes:

[0264] A processing module, configured to obtain a first received power estimation result corresponding to a first signal and a second received power estimation result corresponding to a second signal, wherein the first signal is a signal sent by the terminal device to the first network device, and the second signal is a signal sent by the terminal device to the second network device;

[0265] A receiving module, configured to receive first power information from the terminal device, where the first power information is determined by the terminal device according to the first transmit power estimation result and the second transmit power estimation result;

[0266] The processing module is used to obtain first information according to the first received power estimation result, the second received power estimation result and the first power information, wherein the first information is used to indicate a difference between a first path loss and a second path loss, the first path loss is a path loss between the first network device and the terminal device, and the second path loss is a path loss between the second network device and the terminal device;

[0267] A sending module is used to send the first information to the terminal device.

[0268] Figure 7 An example of the composition of an electronic device provided in an embodiment of the present application. The electronic device may be a first device, including but not limited to a base station and a core network unit. Figure 7A simplified schematic diagram of the base station structure is shown. The base station includes a processor 1610 part, a memory 1620 part and a transceiver 1630 part. The processor 1610 part is mainly used for baseband processing, controlling the base station, etc.; the processor 1610 part is usually the control center of the base station, which can be generally referred to as a processor, and is used to control the base station to perform the processing operation on the first device side in the above method embodiment. The memory 1620 part is mainly used to store computer program code and data. The transceiver 1630 part is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals to baseband signals; the transceiver 1630 part can generally be referred to as a transceiver module, a transceiver, a transceiver circuit, or a transceiver, etc. The transceiver module of the transceiver 1630 part can also be referred to as a transceiver or a transceiver, etc., which includes an antenna 1633 and a radio frequency circuit (not shown in the figure), wherein the radio frequency circuit is mainly used for radio frequency processing. Optionally, the device for implementing the receiving function in the transceiver 1630 part may be regarded as a receiver, and the device for implementing the transmitting function may be regarded as a transmitter, that is, the transceiver 1630 part includes a receiver 1632 and a transmitter 1631. The receiver may also be referred to as a receiving module, a receiver, or a receiving circuit, etc., and the transmitter may be referred to as a transmitting module, a transmitter, or a transmitting circuit, etc.

[0269] The processor 1610 part and the memory 1620 part may include one or more single boards, and each single board may include one or more processors and one or more memories. The processor is used to read and execute the program in the memory to realize the baseband processing function and the control of the base station. If there are multiple single boards, each single board can be interconnected to enhance the processing capability. As an optional implementation, multiple single boards may share one or more processors, or multiple single boards may share one or more memories, or multiple single boards may share one or more processors at the same time.

[0270] For example, in one implementation, the transceiver module of the transceiver 1630 is used to execute the transceiver-related process executed by the base station (first device) in the aforementioned method embodiment. The processor of the processor 1610 is used to execute the processing-related process executed by the base station in the aforementioned method embodiment.

[0271] It should be understood that Figure 7 This is only an example and not a limitation. The network device including the processor, memory and transceiver may not rely on Figure 7 The structure shown.

[0272] Figure 8Another example of the composition of an electronic device provided in an embodiment of the present application. The electronic device may be a second device, and the second device may be a terminal, including but not limited to a mobile phone, a smart wearable device (such as a smart watch) and other electronic devices. Taking a mobile phone as an example, the electronic device may include a processor 310, an external memory interface 320, an internal memory 321, a display screen 330, a camera 340, an antenna 1, an antenna 2, a mobile communication module 350, and a wireless communication module 360, etc.

[0273] It is to be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the electronic device. In other embodiments, the electronic device may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0274] The processor 310 may include one or more processing units, for example, the processor 310 may include an application processor (AP), a modem processor, a graphics processor (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Different processing units may be independent devices or integrated into one or more processors.

[0275] It is understandable that the interface connection relationship between the modules illustrated in this embodiment is only a schematic illustration and does not constitute a structural limitation of the electronic device. In other embodiments of the present application, the electronic device may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

[0276] The external memory interface 320 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the electronic device. The external memory card communicates with the processor 310 through the external memory interface 320 to implement a data storage function. For example, files such as music and videos can be stored in the external memory card.

[0277] The internal memory 321 can be used to store computer executable program codes, and the executable program codes include instructions. The processor 310 executes various functional applications and data processing of the electronic device by running the instructions stored in the internal memory 321. The internal memory 321 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc. The data storage area may store data created during the use of the electronic device (such as audio data, a phone book, etc.), etc. In addition, the internal memory 321 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc. The processor 310 executes various functional applications and data processing of the electronic device by running the instructions stored in the internal memory 321, and / or the instructions stored in the memory provided in the processor.

[0278] The wireless communication function of the electronic device can be implemented through antenna 1, antenna 2, mobile communication module 350, wireless communication module 360, modem processor and baseband processor.

[0279] Antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in the electronic device can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve the utilization of the antennas. For example, antenna 1 can be reused as a diversity antenna for a wireless local area network. In some other embodiments, the antenna can be used in combination with a tuning switch.

[0280] The mobile communication module 350 can provide solutions for wireless communications including 2G / 3G / 4G / 5G applied in electronic devices. The mobile communication module 350 may include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc. The mobile communication module 350 can receive electromagnetic waves from the antenna 1, and filter, amplify, and process the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 350 can also amplify the signal modulated by the modulation and demodulation processor, and convert it into electromagnetic waves for radiation through the antenna 1. In some embodiments, at least some of the functional modules of the mobile communication module 350 can be set in the processor 310. In some embodiments, at least some of the functional modules of the mobile communication module 350 can be set in the same device as at least some of the modules of the processor 310.

[0281] In some embodiments, the electronic device initiates or receives a call request through the mobile communication module 350 and the antenna 1 .

[0282] In addition, an operating system is running on the above components. For example, an iOS operating system, an Android operating system, a Windows operating system, etc. Applications can be installed and run on the operating system. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the explanation and beneficial effects of the relevant contents in any of the electronic devices provided above can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0283] The present application also provides a communication system, which may include: Figure 7 The first device shown (for example, a network device such as a base station) and Figure 8 The second device shown (eg, a terminal such as a mobile phone).

[0284] In this application, a terminal or network device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. Among them, the hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also called main memory). The operating system of the operating system layer may be any one or more computer operating systems that implement business processing through processes, such as Linux operating system, Unix operating system, Android operating system, iOS operating system, or Windows operating system. The application layer may include applications such as browsers, address books, word processing software, and instant messaging software.

[0285] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and modules described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0286] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or modules, which can be electrical, mechanical or other forms.

[0287] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0288] In addition, each functional module in each embodiment of the present application can be integrated into a processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or software functional modules.

[0289] If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the part that essentially contributes to the technical solution of the present application or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the process of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories, random access memories, magnetic disks or optical disks.

[0290] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for obtaining path loss, characterized in that: Applied to a terminal device, the method comprises: Obtain a first transmit power estimation result corresponding to a first signal and a second transmit power estimation result corresponding to a second signal, wherein the first signal is a signal sent by the terminal device to the first network device, and the second signal is a signal sent by the terminal device to the second network device; Sending first power information to the first network device and / or the second network device, where the first power information is determined according to the first transmit power estimation result and the second transmit power estimation result; Receiving first information from the first network device, the first information being used to indicate a difference between a first path loss and a second path loss, the first path loss being a path loss between the first network device and the terminal device, and the second path loss being a path loss between the second network device and the terminal device; The obtaining of a first transmit power estimation result corresponding to the first signal and a second transmit power estimation result corresponding to the second signal includes: Sending the first signal to the first network device, and determining the first transmit power estimation result according to a first filter coefficient corresponding to the first signal; as well as, A second signal is sent to the second network device, and the second transmission power estimation result is determined according to a second filter coefficient corresponding to the second signal.

2. The method according to claim 1, characterized in that The method further comprises: A first filter coefficient corresponding to the first signal and a second filter coefficient corresponding to the second signal sent by the first network device are received.

3. The method according to claim 1 or 2, characterized in that: The determining a first transmit power estimation result of the first signal according to a first filter coefficient corresponding to the first signal includes: The first transmission power corresponding to the first signal is filtered according to the first filter coefficient to obtain the first transmission power estimation result.

4. The method according to claim 3, characterized in that The first transmit power corresponds to the latest reference signal transmission opportunity before the reporting time of the first power information and before the first time period.

5. The method according to claim 1 or 2, characterized in that: The number of the first signals is N, where N is a positive integer; The obtaining a first transmit power estimation result corresponding to the first signal includes: Determine N first sub-transmit power estimation results according to the first filter coefficients corresponding to the N first signals; A weighted average is performed on the N first sub-transmit power estimation results to obtain the first transmit power estimation result.

6. The method according to claim 1 or 2, characterized in that: The first power information includes: the first transmit power estimation result and the second transmit power estimation result; or, The first power information includes: a difference between the first transmit power estimation result and the second transmit power estimation result.

7. The method according to claim 1 or 2, characterized in that: The method further comprises: The second path loss is determined according to the first path loss and the first information.

8. A method for obtaining path loss, characterized in that: Applied to a first network device, the method comprises: Obtain a first received power estimation result corresponding to a first signal and a second received power estimation result corresponding to a second signal, wherein the first signal is a signal sent by a terminal device to a first network device, and the second signal is a signal sent by the terminal device to a second network device; receiving first power information from the terminal device, where the first power information is determined by the terminal device according to a first transmit power estimation result corresponding to the first signal and a second transmit power estimation result corresponding to the second signal; Obtain first information according to the first received power estimation result, the second received power estimation result, and the first power information, wherein the first information is used to indicate a difference between a first path loss and a second path loss, wherein the first path loss is a path loss between the first network device and the terminal device, and the second path loss is a path loss between the second network device and the terminal device; Sending the first information to the terminal device; The obtaining of a first received power estimation result corresponding to the first signal includes: Receiving the first signal from a terminal device; Determine the first received power estimation result according to a first filter coefficient corresponding to the first signal; Wherein, obtaining a second received power estimation result corresponding to the second signal includes: receiving a second received power estimation result sent by the second network device, where the second received power estimation result is a received power estimation result determined by the second network device according to a second filter coefficient corresponding to the second signal; or, receiving the second signal sent by the second network device; The second receiving power estimation result is determined according to a second filter coefficient corresponding to the second signal.

9. The method according to claim 8, characterized in that The method further comprises: Sending a first filter coefficient corresponding to the first signal and a second filter coefficient corresponding to the second signal to the terminal device.

10. The method according to claim 8, characterized in that The number of the first signals is N, where N is a positive integer; The determining the first received power estimation result according to the first filter coefficient corresponding to the first signal includes: Determine N first sub-received power estimation results according to the first filter coefficients corresponding to the N first signals; Perform weighted averaging on the N first sub-received power estimation results to obtain the first received power estimation result.

11. The method according to claim 8, characterized in that The determining the first received power estimation result according to the first filter coefficient corresponding to the first signal includes: The first receiving power corresponding to the first signal is filtered according to the first filtering coefficient to obtain the first receiving power estimation result.

12. A terminal device, characterized in that: The terminal device comprises: A processing module, configured to obtain a first transmit power estimation result corresponding to a first signal and a second transmit power estimation result corresponding to a second signal, wherein the first signal is a signal sent by the terminal device to the first network device, and the second signal is a signal sent by the terminal device to the second network device; a sending module, configured to send first power information to the first network device and / or the second network device, where the first power information is determined according to the first transmit power estimation result and the second transmit power estimation result; A receiving module, configured to receive first information from the first network device, wherein the first information is used to indicate a difference between a first path loss and a second path loss, wherein the first path loss is a path loss between the first network device and the terminal device, and the second path loss is a path loss between the second network device and the terminal device; The processing module is specifically used for: Sending the first signal to the first network device, and determining the first transmit power estimation result according to a first filter coefficient corresponding to the first signal; as well as, A second signal is sent to the second network device, and the second transmission power estimation result is determined according to a second filter coefficient corresponding to the second signal.

13. A network device, characterized in that: The network device is specifically a first network device, and the first network device includes: A processing module, configured to obtain a first received power estimation result corresponding to a first signal and a second received power estimation result corresponding to a second signal, wherein the first signal is a signal sent by a terminal device to a first network device, and the second signal is a signal sent by the terminal device to a second network device; a receiving module, configured to receive first power information from the terminal device, where the first power information is determined by the terminal device according to a first transmit power estimation result corresponding to the first signal and a second transmit power estimation result corresponding to the second signal; The processing module is used to obtain first information according to the first received power estimation result, the second received power estimation result and the first power information, wherein the first information is used to indicate a difference between a first path loss and a second path loss, the first path loss is a path loss between the first network device and the terminal device, and the second path loss is a path loss between the second network device and the terminal device; A sending module, used for sending the first information to the terminal device; Wherein, the processing module is specifically used for: Receiving the first signal from a terminal device; Determine the first received power estimation result according to a first filter coefficient corresponding to the first signal; receiving a second received power estimation result sent by the second network device, where the second received power estimation result is a received power estimation result determined by the second network device according to a second filter coefficient corresponding to the second signal; or, receiving the second signal sent by the second network device; The second receiving power estimation result is determined according to a second filter coefficient corresponding to the second signal.

14. A communication device, characterized in that: The communication device comprises: Memory for storing computer programs or computer instructions; A processor, configured to execute a computer program or computer instruction stored in the memory, so that the communication device executes the method according to any one of claims 1 to 7, or 8 to 11.

15. A computer storage medium for storing a computer program, wherein when the computer program is executed, it is used to implement the method according to any one of claims 1 to 7, or 8 to 11.

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