Method for determining path loss, and electronic device

Abstract

Provided in the present application are a method for determining path loss, and an electronic device. The method comprises: a user equipment respectively transmitting uplink reference signals to a plurality of network devices, receiving indication information of received power determined by the plurality of network devices, and on the basis of the indication information of the received power, and transmit power locally determined by the user equipment, obtaining path loss between the user equipment and each of the plurality of network devices. The solution mainly determines path loss in a single-downlink multi-uplink communication scenario by means of decoupling reference signals among different network devices.

Description

Methods and electronic equipment for determining road loss

[0001] This application claims priority to Chinese patent application filed on July 11, 2024, with application number 202410933443.X and entitled "Method and Electronic Device for Determining Road Damage", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a method and electronic device for determining path loss. Background Technology

[0003] Traditional methods for determining path loss are designed for single downlink / single uplink communication scenarios. In this scenario, the transmission and receiving point (TRP) sends a downlink reference signal to the user equipment (UE), and the UE sends an uplink reference signal to the TRP. Therefore, this method calculates path loss using the difference between the transmission power of the downlink reference signal sent by the TRP and the reception power of the downlink reference signal received by the UE. However, with the development of communication technology, single downlink / multiple uplink communication scenarios have emerged. In this scenario, multiple TRPs are involved. The primary TRP sends a downlink reference signal to the UE, and the UE sends an uplink reference signal to both the primary and secondary TRPs. Since the secondary TRPs do not send downlink reference signals to the UE, the traditional path loss determination method cannot obtain the path loss between the UE and the secondary TRPs.

[0004] Therefore, determining the path loss between the UE and the secondary TRP in a single downlink multi-uplink communication scenario is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] This application provides a method and electronic device for determining path loss, which can determine the path loss between the UE and the secondary TRP in a single downlink multiple uplink communication scenario.

[0006] In a first aspect, a method for determining path loss is provided, applied to a user equipment (UE). The method includes: transmitting an uplink reference signal to a first transmission receiving point (TRP) via an uplink in one or more sets of reference signal transmission opportunities, each set of reference signal transmission opportunities including one or more opportunities for transmitting the uplink reference signal; transmitting an uplink reference signal to a second TRP via an uplink in one or more sets of reference signal transmission opportunities, each set of reference signal transmission opportunities including one or more opportunities for transmitting the uplink reference signal; receiving first received power information transmitted by the first TRP to the UE via a downlink; the first received power information being determined based on the uplink reference signal transmitted by the UE; and determining the path loss between the UE and the second TRP, and / or the path loss between the UE and the first TRP, based on the first received power information.

[0007] In the technical solution of this application, the reference signal between the two TRPs is decoupled, the receiving power of the two TRPs is determined by the uplink reference signal, and the indication information of the determined receiving power is sent to the UE. The transmitting power is also determined on the UE side. Then the path loss between the UE and the two TRPs is calculated, thereby realizing the path loss determination in the single downlink and multiple uplink communication scenario.

[0008] This application's solution decouples the path loss determination tasks of two TRPs, allowing the two TRPs to use identical, partially identical, or completely different sets of reference signal transmission occasions (UL RS occasions sets) for path loss determination. This broadens the application scope and increases flexibility. Compared to a solution that sends the same reference signal at the same power to both TRPs, this solution allows for power control based on the actual needs of the two TRPs, employing transmission powers that may be the same or different. For example, assuming the auxiliary TRP requires less transmission power and the primary TRP requires more, a solution that sends the same reference signal at the same power to both TRPs would have to accommodate the primary TRP's transmission power requirement. Using a higher transmission power would result in higher power consumption and could easily interfere with UL signals transmitted by other user equipment within the same TRP (primarily the auxiliary TRP) and by user equipment in neighboring cells. The solution adopted in this application embodiment means that the UL RS occasion sets of the two TRPs do not have to be exactly the same. They are no longer required to be exactly the same. For TRPs that need to transmit power, UL RS occasion sets with relatively high transmission power can be selected, and for TRPs that need to transmit power, UL RS occasion sets with relatively low transmission power can be selected, thereby reducing power consumption and interference.

[0009] Furthermore, in this application's scheme, when the number of one or more reference signal transmission timing sets used by the UE to send an uplink reference signal to the first TRP is multiple, at least one of the following aspects of the transmission timings included in these multiple reference signal transmission timing sets is not completely identical: type, purpose, and beam management parameters; and / or, when the number of one or more reference signal transmission timing sets used by the UE to send an uplink reference signal to the second TRP is multiple, at least one of the following aspects of the transmission timings included in these multiple reference signal transmission timing sets is not completely identical: type, purpose, and beam management parameters. That is, different reference signal transmission timing sets can use different reference signal types, different reference signal purposes, and / or different beam management parameters. However, it should be understood that different reference signal transmission timing sets can have the same reference signal type, the same reference signal purpose, and the same beam management parameters. In other words, for the same TRP, completely identical, partially identical, or completely different reference signal transmission timing sets can be used for path loss determination, making the scheme more widely applicable and more flexible.

[0010] In conjunction with the first aspect, in certain implementations of the first aspect, the first received power information is used to indicate the first received power determined based on the uplink reference signal sent by the UE to the first TRP and the second received power determined based on the uplink reference signal sent by the UE to the second TRP; or, it is used to indicate the difference between the first received power and the second received power. In this implementation, an example of the indication content of the first received power information is given. It can directly indicate the determined received power or indicate the difference between the two. Therefore, when the UE receives this information, it can calculate the path loss based on the two different indication contents.

[0011] In conjunction with the first aspect, in certain implementations of the first aspect, when determining the path loss between the UE and the second TRP, and / or the path loss between the UE and the first TRP, based on the first received power information, the following may be included: determining one or more second transmit powers of the uplink reference signal transmitted by the UE to the second TRP, each first transmit power corresponding to a set of reference signal transmission opportunities, each first transmit power including transmit power values ​​of one or more transmission opportunities; and determining the path loss between the UE and the second TRP based on the first received power information and one or more second transmit powers.

[0012] In this implementation, an example of a method for determining the path loss between the UE and the second TRP is given. The UE side first obtains the transmission power, and then determines the path loss between the UE and the second TRP based on the obtained transmission power and the received first reception power information.

[0013] In one example, determining one or more second transmit powers of the uplink reference signal transmitted by the UE to the second TRP may include: measuring the transmit power of the uplink reference signal transmitted by the UE to the second TRP to obtain one or more initial transmit powers, each initial transmit power corresponding to a set of reference signal transmission opportunities, and each initial transmit power including transmit power measurements for one or more transmission opportunities; filtering the one or more initial transmit powers to obtain one or more second transmit powers. Filtering can reduce the impact of other interference and improve the accuracy of path loss.

[0014] In conjunction with the first aspect, in certain implementations of the first aspect, when determining the path loss between the UE and the second TRP, and / or the path loss between the UE and the first TRP, based on the first received power information, the method may include: determining one or more first transmit powers of the uplink reference signal transmitted by the UE to the first TRP, each first transmit power corresponding to a set of reference signal transmission opportunities, each first transmit power including transmit power values ​​for one or more transmission opportunities; and determining the path loss between the UE and the first TRP based on the first received power information and the one or more first transmit powers. An example of a method for determining the path loss between the UE and the first TRP is given in this implementation. This implementation is based on the uplink reference signal, but it should be understood that since the first TRP can also transmit a downlink reference signal, the path loss between the UE and the first TRP can also be determined based on the downlink reference signal.

[0015] In conjunction with the first aspect, in certain implementations of the first aspect, when obtaining the path loss between the UE and the second TRP based on the first received power information and one or more second transmitted powers, the following may be included: when the number of one or more second transmitted powers is one, determining the path loss between the UE and the second TRP based on the second transmitted power and the first received power information; or, when the number of one or more second transmitted powers is multiple, determining a third transmitted power based on the multiple second transmitted powers; and determining the path loss between the UE and the second TRP based on the third transmitted power and the first received power information.

[0016] For the UE, after obtaining the first received power information, it only needs to use the corresponding transmitted power to calculate the path loss. When there is only one second transmitted power, that is, when the number of reference signal transmission timing sets is one, the path loss between the UE and the second TRP can be calculated directly using the second transmitted power information and the aforementioned first received power. When there are multiple second transmitted power, that is, when the number of reference signal transmission timing sets is multiple, a portion of these sets can be selected, and the second transmitted power corresponding to the selected portion of the sets can be used to determine the third transmitted power. The path loss between the UE and the second TRP can then be calculated using the third transmitted power and the aforementioned first received power information.

[0017] In conjunction with the first aspect, in certain implementations of the first aspect, when the number of one or more second transmission powers is greater than or equal to a plurality of second transmission powers, determining the third transmission power based on the plurality of second transmission powers may include: selecting at least one fourth transmission power from the plurality of second transmission powers; when the number of at least one fourth transmission power is one, determining the fourth transmission power as the third transmission power; or, when the number of at least one fourth transmission power is greater than or equal to a plurality of fourth transmission powers, determining the third transmission power based on the plurality of fourth transmission powers. In this implementation, different methods are used to determine the third transmission power depending on the number of fourth transmission powers selected from the plurality of second transmission powers.

[0018] In conjunction with the first aspect, in certain implementations of the first aspect, when there are multiple fourth transmission powers, determining the third transmission power based on the multiple fourth transmission powers may include: determining the third transmission power as the average or weighted average of the multiple fourth transmission powers. In this implementation, when there are multiple fourth transmission powers, the average or weighted average of these multiple fourth transmission powers is used to determine the third transmission power, making the third transmission power more accurate than a randomly selected fourth transmission power, thereby making the subsequently calculated path loss more accurate.

[0019] In one example, selecting at least one fourth transmission power from a plurality of second transmission powers may include: determining the maximum value among the plurality of second transmission powers as the fourth transmission power; or, determining the transmission power greater than a second transmission power threshold among the plurality of second transmission powers as the fourth transmission power; or, determining the transmission power greater than the second transmission power threshold and the maximum value among the plurality of second transmission powers as the fourth transmission power; or, determining the transmission power of the reference signal transmission timing set closest to the first moment in the reference signal transmission timing set corresponding to the plurality of second transmission powers as the fourth transmission power, where the first moment is the moment before the UE receives the first received power information, and the time interval between the first moment and the moment the UE receives the first received power information is a first preset time interval. This example provides a screening strategy where a second transmission power that is more conducive to improving the accuracy of path loss determination is selected from the plurality of second transmission powers for subsequent path loss calculation, while other second transmission powers that do not meet the screening conditions are eliminated, thereby making the calculated path loss more accurate.

[0020] In one example, there can be multiple second transmission power thresholds, each corresponding to a set of reference signal transmission opportunities. That is, a uniform transmission power threshold can be set for all sets, or a second transmission power threshold can be set for each set of reference signal transmission opportunities. The former is relatively simple, while the latter is relatively more accurate but also more complex.

[0021] In one example, when there are multiple second transmission powers, determining the third transmission power based on these multiple second transmission powers may include: determining the third transmission power as the average or weighted average of the multiple second transmission powers. In this example, instead of filtering the second transmission powers, all second transmission powers are averaged or weighted to determine the third transmission power.

[0022] In conjunction with the first aspect, in certain implementations of the first aspect, when determining the path loss between the UE and the second TRP based on the first received power information and one or more second transmitted powers, the determination may include: determining the path loss between the UE and the second TRP based on the first received power indicated by the first received power information and one or more second transmitted powers, wherein the first received power is determined based on the uplink reference signal transmitted by the UE to the second TRP; or, determining the path loss between the UE and the second TRP based on the difference between the first received power and the second received power indicated by the first received power information and one or more second transmitted powers, wherein the first received power is determined based on the uplink reference signal transmitted by the UE to the first TRP. In this implementation, the path loss is determined separately depending on the different contents indicated by the first received power information.

[0023] In one example, determining the path loss between the UE and the second TRP based on the difference between the first received power and the second received power indicated by the first received power information, and one or more first transmit powers, may include: determining the path loss between the UE and the second TRP based on the difference between the first received power and the second received power, one or more second transmit powers, and the path loss between the UE and the first TRP; the path loss between the UE and the first TRP is determined based on the downlink reference signal transmitted from the first TRP to the UE. In this example, since the first TRP can transmit the downlink reference signal, the path loss between the UE and the first TRP is first obtained based on the downlink reference signal, and then the first received power can be obtained based on the received difference and the path loss. Finally, the path loss between the UE and the second TRP can be determined based on the first received power.

[0024] In conjunction with the first aspect, in certain implementations of the first aspect, when obtaining the path loss between the UE and the first TRP based on the first received power information and one or more first transmitted powers, the method may include: when the number of one or more first transmitted powers is one, determining the path loss between the UE and the first TRP based on the first transmitted power and the first received power information; or, when the number of one or more first transmitted powers is multiple, determining a fifth transmitted power based on the multiple first transmitted powers; and determining the path loss between the UE and the first TRP based on the fifth transmitted power and the first received power information.

[0025] This implementation provides an example of a method for determining the path loss between the UE and the first TRP.

[0026] It should be understood that even when the first received power information directly indicates the first received power, the path loss between the UE and the first TRP can still be determined without relying on the first received power. Instead, the path loss between the UE and the first TRP can be determined based on the downlink reference signal.

[0027] In another implementation, the method further includes: obtaining one or more seventh received powers by measuring the received power of the downlink reference signal transmitted by the first TRP via the downlink in one or more sets of reference signal transmission opportunities; each seventh received power corresponds to a set of reference signal transmission opportunities, each seventh received power includes one or more received power values, and each received power value corresponds to an opportunity to transmit the downlink reference signal; and determining the path loss between the UE and the first TRP based on the one or more seventh received powers. This implementation provides another method for determining the path loss between the UE and the first TRP, based on measurements of the downlink reference signal. The path loss between the UE and the first TRP obtained by this implementation can also be used to determine the path loss between the UE and the first TRP when the first received power information indicates the difference between two received powers, and to assist in calculating the path loss between the UE and the second TRP.

[0028] In one example, when obtaining one or more seventh received powers by measuring the transmit power of the downlink reference signal sent by the first TRP to the UE via the downlink, the process may include: measuring the received power when receiving the downlink reference signal from the first TRP to obtain one or more initial received powers, each initial received power corresponding to a set of reference signal transmission opportunities, and each initial received power including the received power measurement value of one or more transmission opportunities; filtering the one or more initial received powers to obtain one or more seventh received powers.

[0029] Each seventh received power corresponds to an initial received power.

[0030] In one example, the filtering algorithm used in the step of measuring and filtering the transmit power of the downlink reference signal sent by the first TRP to the UE via the downlink (that is, filtering one or more initial received powers to obtain one or more seventh received powers) is the same as the filtering algorithm used by the UE side for filtering the transmit power.

[0031] In conjunction with the first aspect, in some implementations of the first aspect, when the number of one or more first transmission powers is greater than or equal to a plurality of first transmission powers, determining the fifth transmission power based on the plurality of first transmission powers may include: selecting at least one sixth transmission power from the plurality of first transmission powers; when the number of at least one sixth transmission power is one, determining the sixth transmission power as the fifth transmission power; or, when the number of at least one sixth transmission power is greater than or equal to a plurality of sixth transmission powers, determining the fifth transmission power based on the plurality of sixth transmission powers. In this example, the plurality of sixth transmission powers are filtered. When one is filtered out, this filtered out power is the fifth transmission power. When multiple are filtered out, the fifth transmission power needs to be determined by combining the plurality of filtered sixth transmission powers.

[0032] In conjunction with the first aspect, in some implementations of the first aspect, when there are multiple sixth transmission powers, determining the fifth transmission power based on the multiple sixth transmission powers may include: determining the average or weighted average of the multiple sixth transmission powers as the fifth transmission power.

[0033] In one example, selecting at least one sixth transmission power from a plurality of first transmission powers may include: determining the maximum value among the plurality of first transmission powers as the sixth transmission power; or, determining the transmission power among the plurality of first transmission powers that is greater than a first transmission power threshold as the sixth transmission power; or, determining the transmission power among the plurality of first transmission powers that is greater than a first transmission power threshold and is the maximum value among the plurality of first transmission powers as the sixth transmission power; or, determining the transmission power among the plurality of first transmission powers whose corresponding reference signal transmission timing set is closest to a second time moment as the sixth transmission power, wherein the second time moment is the time before the time when the UE receives the first received power information, and the time interval between the second time moment and the time when the UE receives the first received power information is a second preset time interval.

[0034] It can be seen that the second time here may be the same as or different from the first time above, because the first preset time interval and the second preset time interval can be the same or different. That is to say, in this example, different selected times can be set as needed, that is, the first time and the second time, which are calculated backward from the time of transmission of the first received power information, can be set differently.

[0035] In one example, when there are multiple first transmission powers, determining the fifth transmission power based on these multiple first transmission powers may include: determining the fifth transmission power as the average or weighted average of the multiple first transmission powers. In this example, instead of filtering the first transmission powers, the fifth transmission power is determined by averaging or weighting all the first transmission powers.

[0036] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: sending to the UE via the downlink an index of a reference signal transmission timing set and / or an indication of weighting coefficients; the index of the reference signal transmission timing set is used to indicate information of one or more reference signal transmission timing sets corresponding to the first received power information; the indication of weighting coefficients is used to indicate the weighting coefficients used when determining the first received power and / or the weighting coefficients used when determining the second received power.

[0037] The UL RS occasion set used by the UE to send the UL reference signal may be one or more, and the UL RS occasion sets corresponding to the two TRPs may also be different. Therefore, the index information of these UL RS occasion sets used can also be sent. In addition, the weighted average mentioned above also involves weighting coefficients. When the weighting coefficients are configured to the UE by the network side, the indication information of the weighting coefficients can also be sent to the UE.

[0038] Secondly, a method for determining path loss is provided, applied to a second transmission receiving point (TRP). The method includes: obtaining at least one third received power by measuring the received power of an uplink reference signal from a user equipment (UE) within one or more sets of reference signal transmission opportunities, each third received power corresponding to a set of reference signal transmission opportunities; each set of reference signal transmission opportunities includes one or more opportunities for transmitting uplink reference signals; determining a second received power based on the at least one third received power; and transmitting the second received power to a first TRP, causing the first TRP to generate first received power information based on the second received power, the first received power information being used to instruct the UE to determine the path loss between the UE and the second TRP based on the first received power information. The technical effects of the second aspect can be referred to the relevant description of the first aspect, and for simplicity, will not be repeated here.

[0039] A secondary TRP can be seen as an example of a second TRP, and a primary TRP can be seen as an example of a first TRP.

[0040] In conjunction with the second aspect, in certain implementations of the second aspect, when obtaining at least one third received power by measuring the received power of the uplink reference signal from the user equipment (UE) in one or more sets of reference signal transmission opportunities, the method may include: measuring the received power when receiving the uplink reference signal from the UE to obtain one or more initial received powers, each initial received power corresponding to a set of reference signal transmission opportunities, each initial received power including received power measurements from one or more transmission opportunities; filtering the one or more initial received powers to obtain at least one third received power.

[0041] In conjunction with the second aspect, in some implementations of the second aspect, when determining the second received power based on at least one third received power, it may include: when the number of third received powers is one, determining the third received power as the second received power; or, when the number of third received powers is multiple, determining the second received power based on the multiple third received powers.

[0042] In conjunction with the second aspect, in some implementations of the second aspect, when there are multiple third received powers, determining the second received power based on the multiple third received powers may include: determining at least one fourth received power from the multiple third received powers; and determining the second received power based on the at least one fourth received power.

[0043] In one example, determining at least one fourth received power from a plurality of third received powers may include: determining the maximum value among the plurality of third received powers as the fourth received power; or, determining the received power among the plurality of third received powers that is greater than a second received power threshold as the fourth received power; or, determining the received power among the plurality of third received powers that is greater than the second received power threshold and is the maximum value among the plurality of third received powers as the fourth received power.

[0044] In conjunction with the second aspect, in some implementations of the second aspect, when determining the second received power based on at least one fourth received power, it may include: when the number of at least one fourth received power is one, determining the fourth received power as the second received power; or, when the number of at least one fourth received power is multiple, determining the second received power based on multiple fourth received powers.

[0045] In conjunction with the second aspect, in some implementations of the second aspect, when there are multiple fourth received powers, determining the second received power based on the multiple fourth received powers may include: determining the average or weighted average of the multiple fourth received powers as the second received power.

[0046] In conjunction with the second aspect, in some implementations of the second aspect, when there are multiple third received powers, determining the second received power based on the multiple third received powers may include: determining the average or weighted average of the multiple third received powers as the second received power.

[0047] In conjunction with the second aspect, in some implementations of the second aspect, when filtering one or more initial received powers to obtain at least one third received power, the filtering may include: using the same filtering algorithm as the filtering operation on the UE side.

[0048] In this application, filtering can be performed on the UE side, the first TRP side, and the second TRP side. For better consistency, the same filtering algorithm can be used. Furthermore, to further improve consistency, the same filtering algorithm and the same filtering coefficients can be used. Filtering can reduce interference from other factors, ensuring that the difference between the filtered transmit power and the filtered receive power originates primarily from path loss. Using the same filtering algorithm and / or filtering coefficients can further reduce the influence of other factors, further ensuring that the difference between the filtered transmit power and the filtered receive power originates primarily from path loss.

[0049] Thirdly, a method for determining path loss is provided, applied to a first transmission receiving point (TRP). The method includes: obtaining at least one fifth received power by measuring the received power when receiving an uplink reference signal from a user equipment (UE) in one or more sets of reference signal transmission opportunities, each fifth received power corresponding to a set of reference signal transmission opportunities; each set of reference signal transmission opportunities includes one or more opportunities for transmitting uplink reference signals; determining a first received power based on the at least one fifth received power; receiving a second received power from a second TRP; sending first received power information to the UE, the first received power information being used to instruct the UE to determine the path loss between the UE and the second TRP and / or the path loss between the UE and the first TRP based on the first received power information; the first received power information being used to indicate the first received power and the second received power; or, being used to indicate the difference between the first received power and the second received power.

[0050] The technical effects of the third aspect can be referred to the relevant introduction in the first aspect, and will not be repeated here for the sake of brevity.

[0051] In conjunction with the third aspect, in certain implementations of the third aspect, when obtaining at least one fifth received power by measuring the received power of the uplink reference signal from the user equipment (UE) in one or more sets of reference signal transmission opportunities, the method may include: measuring the received power when receiving the uplink reference signal from the UE to obtain one or more initial received powers, each initial received power corresponding to a set of reference signal transmission opportunities, each initial received power including received power measurements of one or more transmission opportunities; filtering the one or more initial received powers to obtain at least one fifth received power.

[0052] In conjunction with the third aspect, in some implementations of the third aspect, when determining the first receiving power based on at least one fifth receiving power, it may include: when the number of fifth receiving powers is one, determining the fifth receiving power as the first receiving power; or, when the number of fifth receiving powers is multiple, determining the first receiving power based on the multiple fifth receiving powers.

[0053] In conjunction with the third aspect, in some implementations of the third aspect, when there are multiple fifth received powers, determining the first received power based on the multiple fifth received powers includes: determining at least one sixth received power from the multiple fifth received powers; and determining the first received power based on the at least one sixth received power.

[0054] In one example, determining at least one sixth received power from a plurality of fifth received powers includes: determining the maximum value among the plurality of fifth received powers as the sixth received power; or, determining the received power among the plurality of fifth received powers that is greater than a first received power threshold as the sixth received power; or, determining the transmission power among the plurality of fifth received powers that is greater than the first received power threshold and is the maximum value among the plurality of fifth received powers as the sixth received power; or, determining the received power of the reference signal transmission timing set closest to the first moment among the reference signal transmission timing sets corresponding to the plurality of fifth received powers as the sixth received power, wherein the first moment is the moment before the moment when the first received power information is sent to the UE, and the time interval between the first moment and the moment when the first received power information is sent to the UE is a first preset time interval.

[0055] In conjunction with the third aspect, in some implementations of the third aspect, determining the first received power based on at least one sixth received power includes: when the number of at least one sixth received power is one, determining the sixth received power as the first received power; or, when the number of at least one sixth received power is multiple, determining the first received power based on the multiple sixth received powers.

[0056] In conjunction with the third aspect, in some implementations of the third aspect, when there are multiple sixth received powers, determining the first received power based on the multiple sixth received powers includes: determining the average or weighted average of the multiple sixth received powers as the first received power.

[0057] In conjunction with the third aspect, in some implementations of the third aspect, when there are multiple fifth received powers, the first received power is determined based on the multiple fifth received powers, including: determining the average or weighted average of the multiple fifth received powers as the first received power.

[0058] In conjunction with the third aspect, in some implementations of the third aspect, when filtering one or more initial received powers to obtain at least one fifth received power, it may include: using the same filtering algorithm as the filtering operation on the UE side for filtering.

[0059] Fourthly, a method for determining path loss is provided, applied to a second transmission receiving point (TRP). The method includes: measuring and filtering the received power of an uplink reference signal from a user equipment (UE) in one or more sets of reference signal transmission opportunities to obtain at least one third received power, each third received power corresponding to a set of reference signal transmission opportunities; each set of reference signal transmission opportunities includes one or more opportunities for transmitting uplink reference signals; and transmitting at least one third received power to a first TRP.

[0060] In the fourth aspect, the second TRP only performs the work of measuring the received power and filtering, while the remaining work of determining the second received power is performed by the first TRP.

[0061] Fifthly, a method for determining path loss is provided, applied to a second transmission receiving point (TRP). The method includes: measuring the received power of an uplink reference signal from a user equipment (UE) in one or more sets of reference signal transmission opportunities to obtain at least one initial received power, each initial received power including the received power measurement value of one or more line reference signals in the set of reference signal transmission opportunities corresponding to the initial received power; and sending the at least one initial received power to a first TRP.

[0062] In the fifth aspect, the second TRP only performs the task of measuring the received power, while the remaining tasks of filtering and determining the second received power are performed by the first TRP.

[0063] Sixthly, a method for determining path loss is provided, applied at a first transmission receiving point (TRP), the method comprising:

[0064] Receive at least one initial received power from the second TRP, each initial received power corresponding to a reference signal transmission timing set; each reference signal transmission timing set includes one or more timings for transmitting uplink reference signals; filter the at least one initial received power to obtain at least one third received power; determine the first received power based on the at least one third received power.

[0065] In the sixth aspect, after receiving an unfiltered measurement of the received power from the second TRP, the first TRP performs filtering and determines the second received power.

[0066] It should be understood that the difference between the sixth aspect and the second aspect lies in the fact that the first TRP receives an unfiltered measurement of the received power from the second TRP, thus requiring all subsequent processing at the first TRP side until the first received power information is obtained. In the second aspect, however, the first TRP receives a pre-determined second received power from the second TRP. Therefore, all subsequent operations in the second aspect can be applied to the sixth aspect. The difference between the sixth aspect and the third aspect lies in the different tasks performed by the second TRP. In the third aspect, the second TRP performs all steps of measurement, filtering, and determining the second received power. In the sixth aspect, the second TRP only performs the measurement; subsequent filtering and determination of the second received power are performed at the first TRP side. Therefore, all filtering and determination of the second received power steps in the third aspect can also be applied to the sixth aspect; the only difference is the executing entity.

[0067] In a seventh aspect, a method for determining path loss is provided, applied at a first transmission receiving point (TRP), the method comprising:

[0068] Receive at least one third received power from the second TRP, each third received power corresponding to a reference signal transmission timing set; each reference signal transmission timing set includes one or more timings for transmitting uplink reference signals, and at least one third received power is obtained by filtering at least one initial received power; determine the first received power based on at least one third received power.

[0069] In the seventh aspect, the first TRP performs the operation of determining the second received power after receiving at least one third received power.

[0070] It should be understood that the difference between the seventh aspect and the second aspect lies in the fact that the first TRP receives the filtered third received power from the second TRP, thus requiring subsequent processing at the first TRP side to determine the first received power and obtain the first received power information. In the second aspect, however, the first TRP receives the already determined second received power from the second TRP. Therefore, all subsequent operations in the second aspect can be applied to the seventh aspect. The difference between the seventh aspect and the third aspect lies in the different tasks performed by the second TRP. In the third aspect, the second TRP performs all steps of measurement, filtering, and determining the second received power, while in the seventh aspect, the second TRP only performs measurement and filtering; the subsequent determination of the second received power is performed at the first TRP side. Therefore, all steps in the third aspect for determining the second received power based on at least one third received power can also be applied to the seventh aspect; the only difference is the executing entity.

[0071] Eighthly, an apparatus for determining road damage is provided, the apparatus comprising a unit consisting of software and / or hardware for performing any one of the methods of the first to seventh aspects.

[0072] A ninth aspect provides an electronic device including a memory, one or more processors, and a computer program stored in the memory and executable on the processors, wherein when the one or more processors execute the computer program, the electronic device is enabled to implement any one of the methods of the first to seventh aspects.

[0073] When the electronic device is used to perform the steps executed by the user equipment in any one of the methods of the first to seventh aspects, the electronic device can be a user equipment; when the electronic device is used to perform the steps executed by the first TRP in any one of the methods of the first to seventh aspects, the electronic device can be a network device (here, the first TRP); when the electronic device is used to perform the steps executed by the second TRP in any one of the methods of the first to seventh aspects, the electronic device can be a network device (here, the second TRP).

[0074] In a tenth aspect, a communication system is provided, including a user equipment (UE), a first transmission receiving point (TRP), and a second TRP; the UE is capable of performing the steps performed by the UE in any one of the methods of the first to seventh aspects; the first TRP is capable of performing the steps performed by the first TRP in any one of the methods of the first to seventh aspects; and the second TRP is capable of performing the steps performed by the second TRP in any one of the methods of the first to seventh aspects.

[0075] Eleventhly, a chip is provided, including a processor for reading and executing a computer program stored in a memory, wherein when the computer program is executed by the processor, the electronic device in which the chip resides is able to implement any one of the methods of the first to seventh aspects.

[0076] Optionally, the chip also includes a memory electrically connected to the processor.

[0077] Optionally, the chip may also include a communication interface.

[0078] In a twelfth aspect, a computer-readable storage medium is provided that stores a computer program, which, when executed by an electronic device, can implement any one of the methods of the first to seventh aspects.

[0079] In a thirteenth aspect, a computer program product is provided, comprising a computer program that, when executed by an electronic device, can implement any one of the methods of the first to seventh aspects. Attached Figure Description

[0080] Figure 1 is a schematic diagram of a communication scenario applicable to an embodiment of this application.

[0081] Figure 2 is a schematic diagram of a method for determining road loss according to an embodiment of this application.

[0082] Figure 3 is a schematic flowchart of a method for determining road damage according to an embodiment of this application.

[0083] Figure 4 is a schematic flowchart of a method for determining road damage according to an embodiment of this application.

[0084] Figure 5 is a schematic flowchart of another method for determining road damage according to an embodiment of this application.

[0085] Figure 6 is a schematic flowchart of another method for determining road damage according to an embodiment of this application.

[0086] Figure 7 is a schematic diagram showing the correspondence between transmission power and reception power under different transmission times according to an embodiment of this application.

[0087] Figure 8 is a schematic diagram of a device for determining road damage according to an embodiment of this application.

[0088] Figure 9 is a schematic structural diagram of a communication device according to an embodiment of this application. Detailed Implementation

[0089] The embodiments of this application will now be described in conjunction with the accompanying drawings.

[0090] Figure 1 is a schematic diagram of a communication scenario applicable to an embodiment of this application. As shown in Figure 1, the wireless communication system in this scenario includes multiple network devices (network device 120 and network device 130 are taken as examples in Figure 1) and at least one user equipment (UE) 120.

[0091] Figure 1 illustrates an example of a single-downlink, multiple-uplink (DL single-TRP & UL multi-TRP) communication scenario. DL represents the downlink, UL represents the uplink, and TRP represents the transmission and receiving point (TRP). In this scenario, multiple network devices can be represented as a primary TRP and secondary TRPs. The primary TRP can send downlink signals to the UE and receive uplink signals sent by the UE to the primary TRP. The secondary TRP does not send downlink signals to the UE but can receive uplink signals sent by the UE to the secondary TRP. The UE can receive downlink signals from the primary TRP and send uplink signals to both the primary and secondary TRPs.

[0092] The communication system can be a fifth-generation (5G) network, a sixth-generation (6G) network, or a long-term evolution (LTE) network, which supports single downlink and multiple uplink communication scenarios.

[0093] In the embodiments of this application, network devices may include access network (AN) devices and radio access network (RAN) devices. Access network devices, such as base stations (e.g., access points), can refer to devices in the access network that communicate with wireless terminal devices through one or more cells over the air interface. Base stations can be evolved base stations (NodeB, eNB, or e-NodeB), or they may include next-generation node B (gNB) or next-generation evolved node B (ng-eNB), en-gNB (enhanced next-generation node B), etc. in 5G systems. They may also include centralized units (CU) and distributed units (DU) in cloud radio access network (Cloud RAN) systems, or various nodes or base stations in 6G systems, which will not be listed one by one.

[0094] User equipment, also known as terminal equipment, can include mobile phones, smartwatches, tablets, laptops, XR terminals, in-vehicle terminals, etc. XR terminals can also include virtual reality (VR) terminals, augmented reality (AR) terminals, and mixed reality (MR) terminals.

[0095] As shown in Figure 1, assuming that network device 130 is the primary TRP and network device 120 is the secondary TRP, the physical distance between the two and UE110 is different. They can be in the same cell or in different cells, without any limitation.

[0096] Network device 130 sends a downlink reference signal DL1 to UE 110, and UE 110 sends uplink reference signals UL1 and UL2 to network device 130 and network device 120, respectively. Following the conventional method for determining path loss, network device 130 uses a fixed, known transmission power when sending DL1. UE 110 measures the received power when receiving the DL1 reference signal, and then uses this received power and the aforementioned transmission power to calculate the path loss between UE 110 and network device 130.

[0097] Since network device 120 does not send DL reference signals to UE110, the above method cannot be used to determine the path loss between UE110 and network device 120.

[0098] To address the aforementioned issues, technicians considered using uplink reference signals to determine path loss. However, further analysis revealed that the transmission power of the uplink reference signal is constantly changing due to power control, making it impossible to directly apply the method for determining path loss using DL reference signals to the process of determining path loss using UL reference signals. Therefore, based on the above analysis, this application provides a new method for determining path loss, which can better determine path loss in single-downlink multi-uplink communication scenarios. The following description, in conjunction with the accompanying figures, provides further details.

[0099] Figure 2 is a schematic diagram illustrating a method for determining path loss according to an embodiment of this application. As shown in Figure 2, the UE sends uplink reference signals to TRP1 (an example of a first TRP) and TRP2 (an example of a second TRP), respectively. Based on the received power of the uplink reference signal sent by the UE to TRP1, the path loss between TRP1 and the UE can be determined. (An example of the first received power); based on the received power of the uplink reference signal sent by the UE and received by TRP2, the relationship between TRP2 and the UE can be determined. (An example of the second receive power). The UE can also determine the target transmit power between the UE and TRP1 based on the uplink reference signals sent to the two TRPs respectively. Target transmit power between UE and TRP2

[0100] TRP1 can send downlink signals to the UE, but TRP2 cannot. Therefore, TRP2 cannot directly send the second receive power indication to the UE and needs to be relayed through TRP1.

[0101] When TRP1 sends to the UE, it is and When receiving instructions, according to and The path loss between UE and TRP1 can be determined. according to and The path loss between UE and TRP2 can be determined.

[0102] When TRP1 sends to the UE, it is and When determining the difference information, it is also necessary to know the path loss PL1 between the UE and TRP1 in order to further determine PL2. Since TRP1 can send downlink reference signals to the UE, the path loss PL1 between the UE and TRP1 can be determined first based on the method for determining path loss using downlink reference signals, and then based on... and The difference (assuming it is expressed as) ), PL1 and PL2 has been identified.

[0103] because therefore Therefore, after receiving ΔP, combined with PL1 determined based on the downlink reference signal, and and PL2 can then be derived. It should be understood that in this case, PL1 can be obtained entirely based on the downlink reference signal and does not depend on... and The difference is therefore independent of all the steps involved in determining the difference based on the uplink reference signal.

[0104] Figure 3 is a schematic flowchart of a method for determining path loss according to an embodiment of this application. The method shown in Figure 3 is applied to a user equipment and can be understood as illustrating the solution of this application from the perspective of the UE. The first TRP can be the aforementioned TRP1 or the main TRP of this application; the second TRP can be the aforementioned TRP1 or the auxiliary TRP of this application.

[0105] S301. In one or more sets of reference signal transmission opportunities, an uplink reference signal is sent to the first TRP via the uplink. Each set of reference signal transmission opportunities includes one or more opportunities for sending the uplink reference signal.

[0106] When a UE transmits an uplink reference signal, it can do so through the uplink, and therefore it can be called a UL reference signal or a UL RS.

[0107] It should be understood that sending a UL reference signal here does not mean sending only one UL reference signal (UL RS), but rather sending it according to the timing of the UL reference signal transmission.

[0108] It should be understood that each uplink reference signal occasions set (UL RS occasions set) may include multiple transmission occasions, and therefore multiple UL reference signals may be transmitted in each UL RS occasions set.

[0109] In the embodiments of this application, the timing of the transmission of the reference signal can be either synchronization signal block (SSB) occasions or channel state information reference signal (CSI-RS) occasions, and there is no limitation.

[0110] S302. In one or more sets of reference signal transmission opportunities, an uplink reference signal is sent to the second TRP via the uplink. Each set of reference signal transmission opportunities includes one or more opportunities for sending the uplink reference signal.

[0111] It should be understood that step S302 is similar to step S301, except that the recipient is different. Therefore, the relevant content can be found in the description of step S301 and will not be repeated here.

[0112] S303. Receive first receive power information sent by the first TRP to the UE via the downlink; the first receive power information is determined based on the uplink reference signal sent by the UE.

[0113] The first received power information is used to instruct the UE to determine the path loss between the UE and the second TRP, and / or the path loss between the UE and the first TRP, based on the first received power information.

[0114] S304. Based on the first received power information, determine the path loss between the UE and the second TRP, and / or the path loss between the UE and the first TRP.

[0115] The method shown in Figure 3 mainly decouples the reference signal between the two TRPs and sends the indication information of the received power of the two TRPs determined by the uplink reference signal to the UE. This allows the UE to determine the path loss between the UE and the second TRP and / or the path loss between the UE and the first TRP based on the indication information, thereby realizing the path loss determination in a single downlink and multiple uplink communication scenario.

[0116] Figure 4 is a schematic flowchart illustrating a method for determining path loss according to an embodiment of this application. Figure 4 uses a single downlink multiple uplink communication scenario consisting of a user equipment (UE) and two network devices: a primary TRP (an example of a first TRP) and a secondary TRP (an example of a second TRP). Figure 4 can be seen as an example illustrating the process of the solution in this application from the perspective of the interaction between the three devices. The steps shown in Figure 4 are described below.

[0117] S401, the UE sends a UL reference signal to the main TRP (an example of the first TRP).

[0118] An uplink reference signal can be sent to the first transmission receiver (TRP) via the uplink from one or more uplink reference signal occasions sets (UL RS occasions sets). Each reference signal occasions set includes one or more occasions for sending uplink reference signals.

[0119] In one implementation, the number of one or more reference signal transmission timing sets used by the UE to send an uplink reference signal to the first TRP is multiple, and the transmission timings included in the multiple reference signal transmission timing sets are not completely identical in at least one of the following: type, purpose, and beam management parameters. In other words, the multiple UL RS occasion sets used by the UE when transmitting uplink reference signals to the secondary TRP can be occasion sets of different types of UL RS. For example, they can include a sounding reference symbol (SRS) occasion set and a physical uplink shared channel (PUSCH) demodulation reference signal (DMRS) occasion set; they can also be occasion sets of UL RS of the same type but with different purposes, such as an SRS occasion set for beam management and an RS occasion set for antenna switching; they can also be occasion sets of UL RS of the same type and with the same purpose, such as a periodic SRS occasion set for beam management and an aperiodic SRS occasion set for beam management; or they can be UL RS using different UL transmit (Tx) beams, such as an SRS occasion set using Tx beam #0 and an SRS occasion set using Tx beam #1 in the SRS resource set for beam management. Other cases will not be listed one by one.

[0120] In short, different sets of reference signal transmission opportunities can employ different reference signal types, different reference signal applications, and / or different beam management parameters. However, it should be understood that different sets of reference signal transmission opportunities can have the same reference signal type, the same reference signal application, and the same beam management parameters. That is to say, for the same TRP, completely identical, partially identical, or completely different sets of reference signal transmission opportunities can be used for path loss determination, making the scheme more widely applicable and more flexible.

[0121] S402, UE sends UL reference signal to auxiliary TRP.

[0122] When the UE sends an uplink reference signal to the secondary TRP (an example of a second TRP), it can send it through the uplink.

[0123] An uplink reference signal can be sent to a second TRP (taking the secondary TRP as an example) via the uplink from one or more reference signal transmission occasions sets (UL RS occasions sets). Each reference signal transmission occasion set includes one or more occasions for sending uplink reference signals.

[0124] It should be understood that step S402 is similar to step S401, except that the recipient is different. Therefore, the relevant content can be found in the description of step S401 and will not be repeated here.

[0125] In one implementation, the number of one or more reference signal transmission timing sets used by the UE to transmit the uplink reference signal to the second TRP is multiple. These multiple reference signal transmission timing sets contain at least one of the following differences: type, purpose, and beam management parameters. That is, the multiple UL RS occasion sets used by the UE when transmitting the uplink reference signal to the primary TRP can be occasion sets of different types of UL RS, such as SRS occasion set and PUSCH DMRS occasion set; they can also be occasion sets of UL RS of the same type but with different purposes, such as SRS occasion set for beam management and RS occasion set for antenna switching; they can also be occasion sets of UL RS of the same type and purpose, such as periodic SRS occasion set for beam management and aperiodic SRS occasion set for beam management; or they can be UL RS using different UL Tx beams, such as SRS occasion set using Tx beam #0 and SRS occasion set using Tx beam #1 in the SRS resource set for beam management. Other cases are not listed individually.

[0126] In short, different sets of reference signal transmission opportunities can employ different reference signal types, different reference signal applications, and / or different beam management parameters. However, it should be understood that different sets of reference signal transmission opportunities can have the same reference signal type, the same reference signal application, and the same beam management parameters. That is to say, for the same TRP, completely identical, partially identical, or completely different sets of reference signal transmission opportunities can be used for path loss determination, making the scheme more widely applicable and more flexible.

[0127] In one implementation, the transmission timing sets included in one or more reference signal transmission timing sets used by the UE to send an uplink reference signal to the first TRP are not entirely the same as those included in one or more reference signal transmission timing sets used by the UE to send an uplink reference signal to the second TRP. That is, the UL RS occasion sets in steps S401 and S402 may not be completely identical. This application's solution decouples the path loss determination tasks of the two TRPs, allowing the two TRPs to use identical, partially identical, or completely different reference signal transmission timing sets for path loss determination, thus broadening its applicability and increasing flexibility. Compared to the solution of sending the same reference signal with the same power to two TRPs, this allows for power control according to the actual needs of the two TRPs, employing potentially the same or different transmission powers. For example, suppose the secondary TRP requires less transmission power while the primary TRP requires more. If the scheme of transmitting the same reference signal with the same power to both TRPs is adopted, the transmission power required by the primary TRP must be prioritized. Using a higher transmission power results in higher power consumption and is also prone to interfering with UL signals transmitted by other user equipment within the same TRP (mainly the secondary TRP) and UL signals transmitted by user equipment in neighboring cells. However, with the scheme of the embodiment of this application, the UL RS occasion sets of the two TRPs do not have to be exactly the same. The TRP requiring higher transmission power can select UL RS occasion sets with relatively higher transmission power, and the TRP requiring lower transmission power can select UL RS occasion sets with relatively lower transmission power, thereby reducing power consumption and interference.

[0128] It should be understood that there is no restriction on the order of execution of steps S401 and S402, and they can be executed simultaneously or at different times.

[0129] S403. The main TRP measures the received power when receiving an uplink reference signal from the UE in one or more reference signal transmission timing sets to obtain at least one fifth received power, each fifth received power corresponding to a reference signal transmission timing set; each reference signal transmission timing set includes one or more timings for transmitting uplink reference signals.

[0130] In one implementation, each fifth received power includes at least one received power measurement value that corresponds to a timing in a set of reference signal transmission timings corresponding to that fifth received power.

[0131] In another implementation, each fifth received power contains at least one received power value that corresponds to a timing opportunity in a set of reference signal transmission timing opportunities corresponding to that fifth received power. Each received power value is obtained by filtering the received power measurement. In other words, the fifth received power is the filtered power; filtering can eliminate interference and improve accuracy.

[0132] In other words, in one implementation, step S403 may include: measuring the received power when receiving an uplink reference signal from the UE to obtain one or more initial received powers, each initial received power corresponding to a set of reference signal transmission opportunities, and each initial received power including received power measurements from one or more transmission opportunities; filtering the one or more initial received powers to obtain at least one fifth received power. The initial received power is the measured value before filtering, and the fifth received power is the value after filtering. Introducing the filtering operation can filter out some interference factors and improve the accuracy of the determined path loss.

[0133] For each UL RS occasion set#i (that is, for each set of one or more reference signal transmission opportunities, where i is the set number), the UL RS occasions (uplink reference signal transmission opportunities) in that UL RS occasion set#i are measured and filtered to obtain the filtered received power (initial received power) of that UL RS occasion set#i. (An example of the fifth receiving power).

[0134] Filtered received power of UL RS occasion set#i The following formula can be satisfied: in, The received power of the UL reference signal measured on the current occasion set. This is the measurement result after the nth filtering (the current filtering) in the UL RS occasion set#i. This is the measurement result after the (n-1)th filtering (the previous filtering). a i The filter coefficients used for UL RS occasion set#i. n corresponds to the number of occasions in UL RS occasion set#i.

[0135] It can be seen that, for each occasion in UL RS occasion set#i, after measuring its received power... Then, filtering is performed to obtain the corresponding filtered received power. Therefore, for each In addition to being affected by the measured value of the received power of the current occasion, In addition to the influence of this occasion, it is also affected by the filtered received power corresponding to the previous occasion. The impact of this. Similarly, this is equivalent to the filtered received power of the current occasion. It is obtained by combining the received power measurements of this occasion and all previous occasions in the UL RS occasion set#i.

[0136] Filtering can reduce interference from other factors, especially the impact of large deviations in the measured value of received power, thereby ensuring the accuracy (precision) of path loss determination.

[0137] As mentioned above, different UL RS occasion sets can employ different types and / or different applications of UL RS, and can have different beam management parameters. Therefore, when the number of one or more reference signal transmission occasion sets (i.e., one or more UL RS occasion sets) in step S403 is multiple, the initial values ​​of different UL RS occasion sets... The filter coefficients can vary, and different UL RS occasion sets can also have different coefficients.

[0138] Since a UL RS occasion set includes multiple transmission opportunities, i.e., multiple occasions for transmitting UL RS, the aforementioned filtering can be performed on each occasion to obtain the filtered received power. That is, each fifth received power includes n received power values, each corresponding to one of the n transmission opportunities, and each received power value can be obtained after filtering. Furthermore, the number of fifth received powers corresponds to the number of reference signal transmission opportunity sets. Therefore, when there is only one reference signal transmission opportunity set, there is only one fifth received power; when there are multiple reference signal transmission opportunity sets, there will be multiple fifth received powers, and each fifth received power will include multiple received power values, each corresponding to one transmission opportunity. The number of received power values ​​in each fifth received power corresponds to the number of transmission opportunities (occasions) in the reference signal transmission opportunity set (UL RS occasion set).

[0139] It should be noted that in this application's scheme, filtering can be performed on the UE side, the first TRP side, and the second TRP side. For better consistency, the same filtering algorithm can be used. Furthermore, to further improve consistency, the same filtering algorithm and the same filtering coefficients can be used. Filtering can reduce interference from other factors, ensuring that the difference between the filtered transmit power and the filtered receive power originates primarily from path loss. Using the same filtering algorithm and / or filtering coefficients can further reduce the influence of other factors, further ensuring that the difference between the filtered transmit power and the filtered receive power originates primarily from path loss.

[0140] In one implementation, when performing the filtering operation in step S403, the same filtering algorithm as the filtering operation on the UE side is used for filtering.

[0141] Once at least one fifth receiving power has been determined, the first receiving power can be determined. The following explanation is based on step S404.

[0142] S404. The main TRP determines the first receive power based on at least one fifth receive power.

[0143] In other words, the main TRP is based on at least one Sure

[0144] In one implementation, step S404 may include: when there is only one fifth received power, determining the fifth received power as the first received power; or, when there are multiple fifth received powers, determining the first received power based on the multiple fifth received powers. The case where there is only one fifth received power corresponds to the case where the number of reference signal transmission timing sets for the uplink reference signal sent by the UE to the first TRP is only one; the case where there are multiple fifth received powers corresponds to the case where the number of reference signal transmission timing sets for the uplink reference signal sent by the UE to the first TRP is multiple. Therefore, when there is only one set, the received power of that set is directly used; when there are multiple sets, the first received power is determined by combining the received power of the multiple sets.

[0145] In one example, when there are multiple fifth received powers, determining the second received power based on the multiple fifth received powers includes: determining at least one sixth received power from the multiple fifth received powers; and determining the first received power based on the at least one sixth received power.

[0146] In other words, when there is only one UL RS occasion set, the F corresponding to that UL RS occasion set... nDetermined as When there are multiple UL RS occasion sets, it is necessary to select a portion of the UL RS occasion sets according to a certain strategy, and then base the selection on the UL RS occasion sets. Sure The sixth received power is the received power selected from all the fifth received powers.

[0147] In one example, the sixth received power is the maximum value among multiple fifth received powers; or, the sixth received power is greater than the first received power threshold; or, the sixth received power is greater than the first received power threshold and the sixth received power is the maximum value among multiple fifth received powers; or, the reference signal transmission timing set corresponding to the sixth received power is closest to the first moment, which is the moment before the first TRP sends the first received power information to the UE, and the time interval between the first moment and the moment when the first TRP sends the first received power information to the UE is T1 (an example of a first preset time interval). This example provides a screening strategy where the first received power is determined by selecting the received power corresponding to the reference signal transmission timing set with relatively high signal quality.

[0148] In other words, when the main TRP executes step S404, it may include:

[0149] The maximum value among multiple fifth received powers is determined as the sixth received power; or...

[0150] The receiving power that is greater than or equal to the first receiving power threshold among multiple fifth receiving powers is determined as the sixth receiving power; or...

[0151] The receiving power that is greater than or equal to the first receiving power threshold and is the maximum value among the multiple fifth receiving powers is determined as the sixth receiving power; or...

[0152] The fifth received power of the reference signal transmission occasion set (UL RS occasion set) that is closest to the first moment among the multiple fifth received powers is determined as the sixth received power; the first moment is the moment before the moment when the first received power information is sent to the UE, and the time interval between the first moment and the moment when the first received power information is sent to the UE is the first preset time interval (T1).

[0153] It should also be understood that the closest time to the first moment here is before and closest to the first moment, excluding moments during T1.

[0154] By taking the transmission time (reception time) of the first received power information as a reference and calculating a time interval backward, it can be ensured that the received power of the closest set before the first time has been measured and / or filtered.

[0155] Since the distance between the first TRP and the second TRP and the UE is different, and the second TRP cannot directly send downlink signals to the UE, but needs to send them to the first TRP first, appropriate preset time intervals can be set for the two TRPs respectively.

[0156] It should be understood that when T1 = 0, it is equivalent to not setting a time interval for backward calculation.

[0157] It should also be understood that the above screening strategy can be viewed as screening for the fifth received power or as screening for the set of reference signal transmission opportunities. Furthermore, the screening may result in either the entire set or an empty set. For example, when using threshold screening, multiple fifth received powers may all be greater than the threshold, thus meeting the screening criteria; conversely, multiple fifth received powers may all be less than the threshold, thus failing the screening criteria.

[0158] In one example, there can be multiple first transmission power thresholds, each corresponding to a set of reference signal transmission opportunities. That is, a uniform transmission power threshold can be set for all sets, or a first transmission power threshold can be set for each set of reference signal transmission opportunities. The former is relatively simple, while the latter is relatively more accurate but also more complex.

[0159] The above example can also be described as follows: after selecting a UL RS occasion set according to the following strategy, the fifth receive power corresponding to at least one selected UL RS occasion set is determined as the sixth receive power:

[0160] Select all The maximum value in the UL RS occasion set corresponds to; or,

[0161] Select all The value exceeding the threshold (first receive power threshold) The corresponding UL RS occasion sets, or,

[0162] Select all Exceeding the threshold and in all The middle is the maximum value. The corresponding UL RS occasion set, or,

[0163] Select the UL RS occasion set that is closest to the first moment.

[0164] This example also shows that there may be one or more sixth received powers, and each sixth received power corresponds to a set of reference signal transmission opportunities. Therefore, when there are multiple sixth received powers, it is necessary to further calculate the first received power.

[0165] In another example, when there is only one sixth receive power, the first receive power is the sixth receive power; when there are multiple sixth receive powers, the first receive power is the average or weighted average of the multiple sixth receive powers. When multiple UL RS occasion sets are selected, the first receive power can be determined based on the multiple sixth receive powers, for example, by calculating the average or weighted average.

[0166] In other words, when determining the first received power based on at least one sixth received power, it may include: when the number of at least one sixth received power is one, determining the sixth received power as the first received power; or, when the number of at least one sixth received power is multiple, determining the first received power based on multiple sixth received powers, for example, the average or weighted average of multiple sixth received powers may be determined as the first received power.

[0167] In one example, the first received power The following formula can be satisfied: Where, β (i) This is the weighting coefficient. This weighting coefficient can be agreed upon through a protocol or configured by the network side (here, the main TRP) to the UE.

[0168] To facilitate understanding, the following explanation uses specific numerical values. It assumes that the UE transmits a UL reference signal to the master TRP in 10 UL RS occasion sets, and the master TRP measures the fifth received power in 10 of these 10 UL RS occasion sets. i is an integer from 1 to 10. Each fifth received power value includes multiple received power values, corresponding to multiple occasions in the corresponding UL RS occasion set. Each received power value is obtained after filtering. The main TRP consists of 10... Three values ​​greater than the threshold were selected. Assuming these 3 The values ​​of i in the equation are 2, 5, and 9, which means that... and This refers to the example of at least one sixth received power, specifically three. Assume we use an averaging method to calculate... (First received power), then Assuming we use a weighted average method to obtain... And the weighting coefficients are β (2) =0.8, β (5) =0.9, β (9) =0.83 It should be understood that all the above values ​​are only for the purpose of understanding the scheme and are not intended to impose any limitations.

[0169] In another implementation, the above filtering can be omitted, and the first received power can be determined directly based on multiple fifth received powers. For example, the average or weighted average of multiple fifth received powers can be determined as the first received power.

[0170] S405, the auxiliary TRP measures the received power when receiving an uplink reference signal from the UE in one or more reference signal transmission timing sets to obtain at least one third received power, each third received power corresponding to a reference signal transmission timing set; each reference signal transmission timing set includes one or more timings for transmitting uplink reference signals.

[0171] Since step S405 is similar to step S403, only the executing entity is different, the relevant content of step S403 can be referred to here. The third received power can be compared to the fifth received power, the fourth received power can be compared to the sixth received power, and the second received power... This can be compared to the first received power. No further explanation needed.

[0172] For example, in one implementation, step S405 may include: measuring the received power when receiving an uplink reference signal from the UE to obtain one or more initial received powers, each initial received power corresponding to a set of reference signal transmission opportunities, each initial received power including the received power measurement value of one or more transmission opportunities; filtering the one or more initial received powers to obtain at least one third received power.

[0173] It should be understood that although both steps S403 and S405 mention one or more sets of reference signal transmission opportunities, they can be exactly the same, not exactly the same, or completely different. Therefore, the reference signals can be selected relatively flexibly.

[0174] In one implementation, when performing the filtering operation in step S405, the same filtering algorithm as the filtering operation on the UE side is used for filtering.

[0175] S406, the auxiliary TRP determines the first receiving power based on at least one third receiving power.

[0176] Since step S406 is similar to step S404, except that the executing entity is different, the relevant content of step S404 can be referred to here. The third receiving power can be compared to the fifth receiving power, the fourth receiving power can be compared to the sixth receiving power, and the second receiving power can be compared to the first receiving power. No further details will be provided.

[0177] In one implementation, step S406 may include: when there is only one third received power, determining the third received power as the second received power; or, when there are multiple third received powers, determining the second received power based on the multiple third received powers. In one example, when there are multiple third received powers, determining the second received power based on the multiple third received powers may include: determining at least one fourth received power from the multiple third received powers; and determining the second received power based on the at least one fourth received power. That is, a portion of the received power is selected from the multiple third received powers before further determining the second received power.

[0178] In another example, determining at least one fourth received power from multiple third received powers may include: determining the maximum value among the multiple third received powers as the fourth received power; or, determining the received power among the multiple third received powers that is greater than a second received power threshold as the fourth received power; or, determining the received power among the multiple third received powers that is greater than the second received power threshold and is the maximum value among the multiple third received powers as the fourth received power. It should be noted that since the second TRP side does not transmit second received power information, the selection criterion of choosing the set closest to the first time step is not used during the filtering process as in the first TRP side.

[0179] It should be understood that the second receive power threshold can also be set as a granularity, with a second receive power threshold set for each set, which will not be elaborated further.

[0180] In another example, when determining the second received power based on at least one fourth received power, it may include: when the number of at least one fourth received power is one, determining the fourth received power as the second received power; or, when the number of at least one fourth received power is multiple, determining the second received power based on multiple fourth received powers.

[0181] In another example, when there are multiple fourth received powers, determining the second received power based on the multiple fourth received powers may include: determining the second received power as the average or weighted average of the multiple fourth received powers.

[0182] In another example, when there are multiple third received powers, determining the second received power based on these multiple third received powers can include: taking the average or weighted average of the multiple third received powers as the second received power. That is, for cases with multiple third received powers, i.e., when multiple sets of reference signal transmission times are used, the average or weighted average of the received powers from all sets is taken directly, rather than first selecting a subset of sets and then determining the second received power.

[0183] As mentioned above, the third received power can be a filtered value because, for consistency, the same filtering algorithm as the UE side can be used.

[0184] In one implementation, when filtering one or more initial received powers to obtain at least one third received power, the process may include: using the same filtering algorithm as the filtering operation on the UE side.

[0185] It should be understood that although the method for determining the first received power can be the same as the method for determining the second received power, the filtering coefficients, screening strategies, and weighting coefficients used during this period can be exactly the same, partially the same, or different.

[0186] S407, the auxiliary TRP sends the first received power to the main TRP.

[0187] The first received power cannot be directly sent to the UE by the second TRP, but it can be applied to the first received power information. The first received power information is used to instruct the UE to determine the path loss between the UE and the second TRP based on the first received power information. That is, the secondary TRP sends the first received power to the primary TRP, so that the primary TRP generates the first received power information based on the second received power, and the first received power information is used to instruct the UE to determine the path loss between the UE and the second TRP based on the first received power information.

[0188] S408, the main TRP sends the first receive power information to the UE.

[0189] In other words, the UE receives first received power information sent to the UE by the first TRP via the downlink. The first received power information is used to instruct the UE to determine the path loss between the UE and the second TRP and / or the path loss between the UE and the first TRP based on the first received power information.

[0190] It should be understood that in a single downlink and multiple uplink communication scenario, only the primary TRP will send DL signals to the UE through the downlink, while the secondary TRP will not send DL signals to the UE. Therefore, the first received power information must be sent to the UE by the primary TRP, and cannot be sent to the UE by the secondary TRP.

[0191] The first received power information is determined based on the uplink reference signal sent by the UE. In other words, the first received power information can be determined based on the uplink reference signals sent by the UE to the two TRPs respectively.

[0192] In one implementation, the first received power information is used to indicate the first received power determined based on the uplink reference signal sent by the UE to the first TRP (e.g., as described above). ) and the second receive power determined based on the uplink reference signal sent by the UE to the second TRP (e.g., as described above). ); or, used to indicate the difference between the first received power and the second received power.

[0193] It should be noted that in the embodiments of this application, the difference between A and B can be AB or BA, and there is no limitation. For example, the difference between the first received power and the second received power can be... It could also be

[0194] As mentioned above, the UL RS occasion set used by the UE to send the UL reference signal may be one or more, and the UL RS occasion sets corresponding to the two TRPs may also be different. Therefore, the index information of these used UL RS occasion sets can also be sent. In addition, the weighted average mentioned above also involves weighting coefficients. When the weighting coefficients are configured to the UE by the network side, the indication information of the weighting coefficients can also be sent to the UE.

[0195] In one implementation, the method further includes: sending index information of a reference signal transmission timing set and / or indication information of weighting coefficients to the UE via a downlink; the index information of the reference signal transmission timing set is used to indicate information of one or more reference signal transmission timing sets corresponding to the first received power information; the indication information of the weighting coefficients is used to indicate the weighting coefficients used when determining the first received power and / or the weighting coefficients used when determining the second received power.

[0196] S409, UE calculates the path loss between UE and auxiliary TRP.

[0197] After obtaining the first received power, if we want to calculate the path loss between the UE and the secondary TRP, we also need to know the transmit power of the UE when transmitting the UL reference signal. Therefore, we can first obtain the transmit power of the UE when transmitting the UL RS, and then obtain the path loss between the UE and the primary TRP based on the above transmit power and the first received power.

[0198] In one implementation, step S409 includes: determining one or more second transmit powers of the uplink reference signal transmitted by the UE to the secondary TRP (an example of the second TRP), each second transmit power corresponding to a reference signal transmission timing set, and each first transmit power including a filtered transmit power value of one or more transmission timings; and obtaining the path loss between the UE and the second TRP based on the first receive power information and the multiple first transmit powers.

[0199] To further improve accuracy, the measured value of the transmission power can also be filtered.

[0200] In one example, determining one or more second transmit powers of the uplink reference signal sent by the UE to the second TRP may include: measuring the transmit power of the uplink reference signal sent by the UE to the second TRP to obtain one or more initial transmit powers, each initial transmit power corresponding to a set of reference signal transmission opportunities, each initial transmit power including transmit power measurements of one or more transmission opportunities; filtering the one or more initial transmit powers to obtain one or more second transmit powers.

[0201] For the UE, after obtaining the first received power, the path loss can be calculated simply by using the corresponding transmitted power. When there is only one second transmitted power, that is, when the number of reference signal transmission timing sets is one, the path loss between the UE and the second TRP can be calculated directly using the second transmitted power and the aforementioned first received power information. When there are multiple second transmitted powers, that is, when the number of reference signal transmission timing sets is multiple, a third transmitted power can be determined first based on the multiple second transmitted powers, and then the path loss between the UE and the second TRP can be calculated using the third transmitted power and the aforementioned first received power information. For example, a subset of sets can be selected from these sets, and the second transmitted power corresponding to the selected subset can be used to determine the third transmitted power. The path loss between the UE and the second TRP can then be calculated using the third transmitted power and the aforementioned first received power information.

[0202] When filtering the transmit power, for each UL RS occasion set#i, the UL RS transmit power is determined by the transmit power of the UL RS occasions in that UL RS occasion set#i. The formula can be satisfied: in, The transmit power of the UL reference signal on the current occasion. This is the measurement result after the nth filtering (the current filtering) in the UL RS occasion set#i. This is the measurement result after the (n-1)th filtering (the previous filtering). a i The filter coefficients used for UL RS occasion set#i. n corresponds to the number of transmission opportunities in UL RS occasion set#i.

[0203] It should be noted that the same filtering algorithm and the same filtering coefficients are used on the UE side and the second TRP side. The consistency between the two can further improve the accuracy of path loss determination. It can be understood that if the transmitting side and the receiving side are the same under other conditions, but the transmitting power and the receiving power are different, it must be caused by path loss. That is, reducing interference from other factors, thereby improving the accuracy of path loss determination.

[0204] In one implementation, when determining the path loss between the UE and the second TRP based on the first received power information and one or more second transmitted powers, the following may be included:

[0205] When the number of one or more second transmit powers is one, the path loss between the UE and the second TRP is determined based on the second transmit power and the first receive power information; or,

[0206] When there are multiple first transmit powers, a third transmit power is determined based on multiple second transmit powers; and the path loss between the UE and the second TRP is determined based on the third transmit power and the first receive power information.

[0207] In this implementation, when there is only one second transmission power, the path loss is determined directly using that transmission power. When there are multiple second transmission powers, the third transmission power is determined by combining the multiple second transmission powers, and then the path loss is determined.

[0208] It should be noted that there is only one secondary transmission power. That is, there is only one UL RS occasion set, but this UL RS occasion set can include multiple transmit power values, each transmit power value corresponds to a transmit timing, and all of them can be filtered values. Path loss between UE and the second TRP

[0209] When the first received power information indicates the above Then the path loss PL2 can be calculated directly. However, when the first received power information indicates the difference between two received power values, it is also necessary to use the path loss PL1 between the UE and the first TRP. In this case, PL1 can be obtained based on the downlink reference signal sent by the first TRP to the UE.

[0210] In one example, when there are multiple second transmission powers, determining the third transmission power based on the multiple second transmission powers may include: selecting at least one fourth transmission power from the multiple second transmission powers; determining the fourth transmission power as the third transmission power when there is only one fourth transmission power; or, when there are multiple fourth transmission powers, determining the third transmission power based on the multiple fourth transmission powers. In this example, different methods are used to determine the third transmission power depending on the number of fourth transmission powers selected from the multiple second transmission powers.

[0211] In other words, from multiple Select at least one from (multiple second transmission powers) At least this This refers to at least one fourth transmission power. When there is only one fourth transmission power, it is the third transmission power. When there are multiple fourth transmission powers, the average or weighted average of these multiple fourth transmission powers is determined as the third transmission power.

[0212] In another example, when there are multiple fourth transmission powers, determining the third transmission power based on the multiple fourth transmission powers may include: determining the third transmission power as the average or weighted average of the multiple fourth transmission powers.

[0213] In one example, the third transmission power The following formula can be satisfied: Where, β (i) This is the weighting coefficient. This weighting coefficient can be agreed upon through a protocol or configured by the network side (here, the main TRP) to the UE.

[0214] In one example, selecting at least one fourth transmission power from a plurality of second transmission powers may include: determining the maximum value among the plurality of second transmission powers as the fourth transmission power; or, determining the transmission power greater than a second transmission power threshold among the plurality of second transmission powers as the fourth transmission power; or, determining the transmission power greater than the second transmission power threshold and the maximum value among the plurality of second transmission powers as the fourth transmission power; or, determining the transmission power of the reference signal transmission timing set closest to the first moment in the reference signal transmission timing set corresponding to the plurality of second transmission powers as the fourth transmission power, where the first moment is the moment before the UE receives the first received power information, and the time interval between the first moment and the moment the UE receives the first received power information is a first preset time interval. This example provides a filtering strategy for selecting the fourth transmission power from a plurality of second transmission powers.

[0215] It should be understood that the second transmission power threshold can also be set at the set level, with a second transmission power threshold set for each set, which will not be elaborated further.

[0216] To facilitate understanding, the following explanation uses specific numerical values. It assumes that the UE transmits a UL reference signal to the main TRP in 10 UL RS occasion sets, and the UE measures the secondary transmission power in 10 of these 10 UL RS occasion sets. i is an integer from 1 to 10. Each second transmit power value includes multiple transmit power values, corresponding to multiple occasions in the UL RS occasion set. Each transmit power value is obtained after filtering. The UE starts from 10... Two were selected from the pool. Assuming these two The values ​​of i in the equation are 1 and 8, which means that... and This refers to the example of at least one fourth transmission power, specifically two. Assume we use an averaging method to calculate... but Assuming we use a weighted average method to obtain... And the weighting coefficients are β (1) =0.95, β (8) =0.89 It should be understood that all the above values ​​are only for the purpose of understanding the scheme and are not intended to impose any limitations.

[0217] In another example, when there are multiple second transmission powers, determining the third transmission power based on these second transmission powers may include: determining the third transmission power as the average or weighted average of the multiple second transmission powers. In this example, no filtering of the second transmission powers is performed; instead, the average or weighted average of the multiple second transmission powers is directly calculated. It should be understood that although the above filtering method may also result in a complete set of multiple second transmission powers, and calculating the average or weighted average based on this would yield the same result, the execution steps are still different. This is because the filtering step is unnecessary in this example, while the filtering method requires a filtering step; the filtering result is a complete set, making it equivalent to not filtering at all.

[0218] As described above, the first received power information can indicate either the first received power and the second received power, or the difference between the two received powers. When it indicates two received powers, after obtaining one or more second transmitted powers, the path loss between the UE and the second TRP (here, the auxiliary TRP) can be calculated based on these one or more second transmitted powers and the second received power indicated by the first received power information. However, if it indicates the difference between the two received powers, then the path loss between the UE and the first TRP also needs to be known. Based on this difference and the known path loss between the UE and the first TRP, the path loss of the other path (between the UE and the second TRP) can be calculated. The path loss between the UE and the first TRP can be obtained through the DL signal.

[0219] In one implementation, determining the path loss between the UE and the second TRP based on first received power information and one or more second transmitted powers may include: determining the path loss between the UE and the second TRP based on a second received power indicated by the first received power information and one or more first transmitted powers, wherein the second received power is determined based on an uplink reference signal transmitted by the UE to the second TRP; or, determining the path loss between the UE and the second TRP based on the difference between the first received power and the second received power indicated by the first received power information and one or more second transmitted powers, wherein the first received power is determined based on an uplink reference signal transmitted by the UE to the first TRP. This implementation primarily determines the path loss separately when the content indicated by the first received power information differs.

[0220] In one example, determining the path loss between the UE and the second TRP based on the difference between the first received power and the second received power indicated by the first received power information, and one or more second transmit powers, may include: determining the path loss between the UE and the second TRP based on the difference between the first received power and the second received power, one or more second transmit powers, and the path loss between the UE and the first TRP; the path loss between the UE and the first TRP is determined based on the downlink reference signal transmitted from the first TRP to the UE. In this example, since the first TRP can transmit downlink reference signals, the path loss between the UE and the first TRP is first obtained based on the downlink reference signal, and then the path loss between the UE and the second TRP can be determined based on the received difference, the path loss, and the transmit power obtained on the UE side.

[0221] When determining the path loss between the UE and the first TRP based on the downlink reference signal sent to the UE by the first TRP, the process may include: the first TRP sending an uplink reference signal to the UE via the downlink in one or more sets of reference signal transmission opportunities, each set including one or more opportunities for sending the uplink reference signal; the UE measuring the received power when receiving the downlink reference signal and determining the path loss between the UE and the first TRP based on the measured received power. Since the transmission power of the downlink reference signal is fixed in the path loss determination scheme based on the downlink reference signal, the first TRP does not need to perform filtering or other processing, while the UE only needs to perform a simple subtraction operation to obtain the path loss by subtracting the fixed transmission power. However, it should be understood that, to further improve accuracy, in this case, the UE can also use a similar method to the above to filter the received power of the downlink reference signal measured by the UE and determine the target received power. The relevant operations can be referred to the above content and will not be repeated here.

[0222] S410, UE calculates the path loss between UE and main TRP.

[0223] Step S410 is similar to step S409, except that the objects to be executed are different. The relevant content can be referred to step S409, except that the first transmission power is analogous to the second transmission power, the fifth transmission power is analogous to the third transmission power, the sixth transmission power is analogous to the fourth transmission power, and the first reception power is analogous to the second reception power.

[0224] In one implementation, step S410 includes: determining one or more first transmit powers of an uplink reference signal sent by the UE to the first TRP, each first transmit power corresponding to a reference signal transmission timing set, and each first transmit power including transmit power values ​​of one or more transmission timings; and determining the path loss between the UE and the first TRP based on the first receive power information and one or more first transmit powers.

[0225] In one example, determining one or more first transmit powers of an uplink reference signal sent by the UE to the first TRP may include: measuring the transmit power of the uplink reference signal sent by the UE to the first TRP to obtain one or more initial transmit powers, each initial transmit power corresponding to a set of reference signal transmission opportunities, each initial transmit power including transmit power measurements of one or more transmission opportunities; filtering the one or more initial transmit powers to obtain one or more first transmit powers.

[0226] In one example, when determining the path loss between the UE and the first TRP based on the first received power information and one or more first transmitted powers, the process may include: when the number of one or more first transmitted powers is one, determining the path loss between the UE and the first TRP based on the first transmitted power and the first received power information; or, when the number of one or more first transmitted powers is multiple, determining a fifth transmitted power based on the multiple first transmitted powers; and determining the path loss between the UE and the first TRP based on the fifth transmitted power and the first received power information. In this example, different path loss calculation schemes are used when the number of first transmitted powers is different.

[0227] In another example, when there are multiple first transmission powers, determining the fifth transmission power based on these multiple first transmission powers may include: selecting at least one sixth transmission power from multiple second transmission powers; when there is only one sixth transmission power, determining the sixth transmission power as the fifth transmission power; or, when there are multiple sixth transmission powers, determining the fifth transmission power based on these multiple sixth transmission powers. In this example, multiple sixth transmission powers are filtered. When one is selected, it becomes the fifth transmission power. When multiple are selected, the fifth transmission power needs to be determined by combining the selected multiple sixth transmission powers.

[0228] In one example, when there are multiple sixth transmission powers, determining the fifth transmission power based on the multiple sixth transmission powers may include: determining the fifth transmission power as the average or weighted average of the multiple sixth transmission powers. In this example, the average of the selected transmission powers is calculated.

[0229] In one example, selecting at least one sixth transmission power from a plurality of first transmission powers may include: determining the maximum value among the plurality of first transmission powers as the sixth transmission power; or, determining the transmission power among the plurality of first transmission powers that is greater than a first transmission power threshold as the sixth transmission power; or, determining the transmission power among the plurality of first transmission powers that is greater than the first transmission power threshold and is the maximum value among the plurality of first transmission powers as the sixth transmission power; or, determining the transmission power among the plurality of first transmission powers whose corresponding reference signal transmission timing set is closest to a second time moment as the sixth transmission power, where the second time moment is the time before the time when the UE receives the first received power information, and the time interval between the second time moment and the time when the UE receives the first received power information is a second preset time interval (T2). An example of a filtering strategy is given in this example.

[0230] The first transmit power threshold can also be set as a granularity, with a first transmit power threshold set for each set.

[0231] It should be understood that the first and second time intervals are set separately, and therefore can be the same or different. In other words, the first preset time interval (T1) and the second preset time interval (T2) can be the same or different. They can be set separately as needed according to the two TRPs.

[0232] In one example, when there are multiple first transmission powers, determining the fifth transmission power based on these multiple first transmission powers may include: determining the fifth transmission power as the average or weighted average of the multiple first transmission powers. In this example, no filtering is performed; instead, the average of the entire set is directly calculated.

[0233] It should be understood that although the method for determining the fifth transmit power can be the same as the method for determining the sixth receive power, the filtering coefficients, screening strategies, and weighting coefficients used during this period can be exactly the same, partially the same, or different.

[0234] The filtering in this application embodiment can employ layer filtering, such as L3 filtering.

[0235] As mentioned above, the first received power information can indicate either the first received power and the second received power, or the difference between the two received powers. When it is the difference between the two, the path loss between the UE and the first TRP also needs to be obtained using the DL signal. That is, for the primary TRP, since it can receive both uplink and downlink signals, its path loss can be determined based on either the uplink or downlink signal.

[0236] In another implementation, the method further includes: obtaining one or more seventh received powers by measuring the received power of the downlink reference signal transmitted by the first TRP via the downlink in one or more sets of reference signal transmission opportunities; each seventh received power corresponds to a set of reference signal transmission opportunities, each seventh received power includes one or more received power values, and each received power value corresponds to an opportunity to transmit the downlink reference signal; and determining the path loss between the UE and the first TRP based on the one or more seventh received powers. This implementation provides another method for determining the path loss between the UE and the first TRP, based on measurements of the downlink reference signal. The path loss between the UE and the first TRP obtained by this implementation can also be used to determine the path loss between the UE and the first TRP when the first received power information indicates the difference between two received powers, and to assist in calculating the path loss between the UE and the second TRP.

[0237] In one example, when obtaining one or more seventh receive powers by measuring the transmit power of the first TRP transmitting a downlink reference signal to the UE via the downlink, the following may be included:

[0238] Measure the received power when receiving the downlink reference signal from the first TRP to obtain one or more initial received powers, each initial received power corresponding to a set of reference signal transmission opportunities, and each initial received power includes the received power measurement values ​​of one or more transmission opportunities; filter the one or more initial received powers to obtain one or more seventh received powers.

[0239] Each seventh received power corresponds to an initial received power.

[0240] In one example, the filtering algorithm used in the step of measuring and filtering the transmit power of the downlink reference signal sent by the first TRP to the UE via the downlink (that is, filtering one or more initial received powers to obtain one or more seventh received powers) is the same as the filtering algorithm used by the UE side for filtering the transmit power.

[0241] It should be understood that since the first TRP can transmit a downlink reference signal, and the transmission power of the downlink reference signal is fixed and does not require filtering or other operations, the path loss can be calculated simply by knowing this transmission power and the received power of the downlink reference signal determined by the UE. Therefore, for the first TRP, when the first received power information indicates the first received power, the path loss between the UE and the first TRP can be determined using either the downlink reference signal or the aforementioned first received power. However, when the first received power information indicates the difference between the first received power and the second received power, the path loss between the UE and the first TRP can be determined using the downlink reference signal, but not using the aforementioned first received power information.

[0242] The method shown in Figure 4 mainly decouples the reference signal between the two TRPs, determines the received power of the two TRPs using the uplink reference signal, sends the determined received power indication information to the UE, and also determines the transmitted power on the UE side. Then, it calculates the path loss between the UE and the two TRPs respectively, thereby realizing the path loss determination in a single downlink multi-uplink communication scenario.

[0243] Figure 5 is a schematic flowchart of another method for determining road loss according to an embodiment of this application. The steps shown in Figure 5 are described below.

[0244] S501, UE sends a UL reference signal to the main TRP.

[0245] Step S501 can be referred to the relevant content of step S401 and will not be repeated here.

[0246] S502, UE sends UL reference signal to auxiliary TRP.

[0247] Step S502 can be referred to the relevant content of step S402 and will not be repeated here.

[0248] S503, the main TRP measures and filters the received power when receiving uplink reference signals from the UE in one or more reference signal transmission timing sets to obtain at least one fifth received power, each fifth received power corresponding to a reference signal transmission timing set; each reference signal transmission timing set includes one or more timings for transmitting uplink reference signals.

[0249] Step S503 can be referred to the relevant content of step S403 and will not be repeated here.

[0250] S504. The main TRP determines the first receiving power based on at least one fifth receiving power.

[0251] Step S504 can be referred to the relevant content of step S404 and will not be repeated here.

[0252] S505, the auxiliary TRP measures and filters the received power when receiving uplink reference signals from the UE in one or more reference signal transmission timing sets to obtain at least one third received power, each third received power corresponding to a reference signal transmission timing set; each reference signal transmission timing set includes one or more timings for transmitting uplink reference signals.

[0253] Step S505 can be referred to the relevant content of step S405 and will not be repeated here.

[0254] S506, the auxiliary TRP sends the third receive power to the main TRP.

[0255] As can be seen from the method shown in Figure 5, the auxiliary TRP only performs the work of measuring the received power and filtering. After filtering, it will send all the third received power to the main TRP, which will then perform the subsequent steps of determining the second received power.

[0256] S507, the main TRP determines the second receive power based on at least one third receive power.

[0257] Comparing steps S507 and S406, it can be seen that the executing entity has changed, but the specific execution process can still refer to step S406, and will not be repeated here.

[0258] It should also be understood that there is no limitation on whether the first received power or the second received power is calculated first. In other words, step S507 does not necessarily have to be executed after step S504 has been completed.

[0259] S508, the main TRP sends the first receive power information to the UE.

[0260] Step S508 can be referred to the relevant content of step S408 and will not be repeated here.

[0261] S509, UE calculates the path loss between UE and auxiliary TRP.

[0262] Step S509 can be referred to the relevant content of step S409 and will not be repeated here.

[0263] S510, UE calculates the path loss between UE and main TRP.

[0264] Step S510 can be referred to the relevant content of step S410 and will not be repeated here.

[0265] As can be seen from Figure 5, another way to implement the method shown in Figure 4 is given. The difference between the two lies in the different task allocation. In Figure 4, both TRPs measure the received power, filter, and determine the received power to be included in the first received power information. In Figure 5, the auxiliary TRP only performs the work of measuring the received power and filtering. After sending the filtered data to the main TRP, the main TRP continues to execute the subsequent steps.

[0266] Figure 6 is a schematic flowchart of another method for determining road loss according to an embodiment of this application. The steps shown in Figure 6 will be described below.

[0267] S601, UE sends a UL reference signal to the main TRP.

[0268] Step S601 can be referred to the relevant content of step S401 and will not be repeated here.

[0269] S602, UE sends UL reference signal to auxiliary TRP.

[0270] Step S602 can be referred to the relevant content of step S402 and will not be repeated here.

[0271] S603, the main TRP measures and filters the received power when receiving uplink reference signals from the UE in one or more reference signal transmission timing sets to obtain at least one fifth received power, each fifth received power corresponding to a reference signal transmission timing set; each reference signal transmission timing set includes one or more timings for transmitting uplink reference signals.

[0272] Step S603 can be referred to the relevant content of step S403 and will not be repeated here.

[0273] S604. The main TRP determines the first receiving power based on at least one fifth receiving power.

[0274] Step S604 can be referred to the relevant content of step S404 and will not be repeated here.

[0275] S605, the auxiliary TRP measures the received power when receiving an uplink reference signal from the UE in one or more reference signal transmission timing sets to obtain at least one initial received power, each initial received power corresponding to a reference signal transmission timing set; each initial received power includes the received power measurement value of one or more line reference signals in the reference signal transmission timing set corresponding to the initial received power.

[0276] As can be seen from the method shown in Figure 6, the auxiliary TRP only performs the task of measuring the received power, and then sends all the measured received power to the main TRP, which then performs the subsequent filtering and the step of determining the second received power.

[0277] S606, the auxiliary TRP sends the received power measurement value to the main TRP.

[0278] That is, to send at least one initial receive power.

[0279] S607. The main TRP filters the received power measurement value from the auxiliary TRP to obtain at least one third received power. Each third received power corresponds to a reference signal transmission timing set. Each reference signal transmission timing set includes one or more timings for transmitting uplink reference signals.

[0280] The filtering part in step S607 can be referred to the relevant content of step S405, the only difference being the executing entity. Alternatively, it can be referred to the relevant content of step S403, the only difference being the filtered object. It will not be elaborated further.

[0281] S608, the main TRP determines the second receive power based on at least one third receive power.

[0282] Comparing steps S608 and S406, it can be seen that the executing entity has changed, but the specific execution process can still refer to step S406, and will not be repeated here.

[0283] It should also be understood that there is no limitation on whether the second received power or the first received power is calculated first. In other words, step S608 does not necessarily have to be executed after step S604 has been completed.

[0284] S609, the main TRP sends the first receive power information to the UE.

[0285] Step S609 can be referred to the relevant content of step S408 and will not be repeated here.

[0286] S610, UE calculates the path loss between UE and auxiliary TRP.

[0287] Step S610 can be referred to the relevant content of step S409 and will not be repeated here.

[0288] S611, UE calculates the path loss between UE and main TRP.

[0289] Step S611 can be referred to the relevant content of step S410 and will not be repeated here.

[0290] As can be seen from Figure 6, another way to implement the method shown in Figure 4 is given. The difference between the two lies in the different task allocation. In Figure 4, both TRPs measure the received power, filter, and determine the first or second received power. In Figure 6, the auxiliary TRP only performs the work of measuring the received power. After sending the measured data to the main TRP, the main TRP then performs the subsequent filtering and determining the second received power steps.

[0291] Figures 4-6 show examples of three task allocation scenarios for the proposed solution.

[0292] Figure 7 is a schematic diagram illustrating the correspondence between transmit power and receive power under different transmission times according to an embodiment of this application. As shown in Figure 7, assuming the current transmission time corresponds to n, it can be seen that the determined value G of the transmit power corresponding to this time is... n It is not directly the measured value S of the transmission power at that moment. n Instead, it utilized the previously determined value G. n-1 And the measurement value S of the previous timing. n-1 S n-2 and S n-3 After such filtering, noise interference can be reduced and accuracy improved. For example, suppose the transmission power in a certain occasion suddenly increases or decreases compared to the previous occasion, but due to this filtering, it is affected by the transmission power of multiple occasions before this occasion, causing the predicted value G of the transmission power in this occasion to be more accurate. n It remains relatively stable. It can also be seen that the predicted received power F corresponding to this occasion... n It is not directly the measured value M of the received power at that moment. n Instead, it utilized the predicted value F from previous opportunities. n-1 And the measurement value M of the previous timing. n-1 M n-2 and M n-3After such filtering, noise interference can be reduced and accuracy improved. For example, suppose the received power measured in a certain occasion suddenly increases or decreases compared to the previous occasion, but due to such filtering, it is affected by the received power of multiple occasions before this occasion, making the determined value F of the received power in this occasion more uncertain. n It remains relatively stable and will not cause inaccurate road loss due to excessive measurement errors. In addition, based on the method shown in Figure 7, this application adds further processing such as screening strategies and weighted averaging to make the road loss determination more accurate.

[0293] The methods of the embodiments of this application have been described above with reference to the accompanying drawings. It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially, these steps are not necessarily executed in the order shown in the figures. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the steps or stages of other steps. The apparatus of the embodiments of this application will now be described with reference to the accompanying drawings.

[0294] Figure 8 is a schematic diagram of a device for determining path loss according to an embodiment of this application. As shown in Figure 8, the device 1000 includes a transceiver unit 1001 and a processing unit 1002. The device 1000 can be a user equipment or a network device, such as the UE, the first TRP and the second TRP described above, or, for example, the UE 110, network device 120 and network device 130 in Figure 1; it can also be integrated into the aforementioned user equipment or network device. The device 1000 can be used to perform the steps of any of the methods described above.

[0295] When the device 1000 is used to implement the functions implemented by the user equipment in any of the above methods, the device 1000 can be used to execute the steps performed by the user equipment in any of the above methods. For example, the transceiver unit 1001 can be used to execute steps S301-S303, and the processing unit 1002 can be used to execute step S304. As another example, the transceiver unit 1001 can be used to execute steps S401 and S408, and the processing unit 1002 can be used to execute steps S409 and S410.

[0296] When the device 1000 is used to implement the function of the first TRP in any of the above methods, the device 1000 can be used to execute the steps of the first TRP in any of the above methods. For example, the transceiver unit 1001 can be used to execute steps S401, S407 and S408, and the processing unit 1002 can be used to execute steps S403 and S404.

[0297] When the device 1000 is used to implement the function of the second TRP in any of the above methods, the device 1000 can be used to execute the steps of the second TRP in any of the above methods. For example, the transceiver unit 1001 can be used to execute steps S402 and S407, and the processing unit 1002 can be used to execute steps S405 and S406.

[0298] The device 1000 can also be used to perform the steps in Figures 5 and 6, which will not be described in detail here.

[0299] In one implementation, the device 1000 may further include a storage unit for storing relevant data. This storage unit may be integrated into any of the aforementioned units, or it may be a unit independent of all the aforementioned units.

[0300] Figure 9 is a schematic structural diagram of a communication device according to an embodiment of this application. As shown in Figure 9, the device 2000 includes a processor 2001 and an interface circuit 2002. The processor 2001 and the interface circuit 2002 are coupled to each other. It is understood that the interface circuit 2002 can be a transceiver or an input / output interface. Optionally, the communication device 2000 may further include a memory 2003 for storing instructions executed by the processor 2001, or storing input data required by the processor 2001 to execute instructions, or storing data generated after the processor 2001 executes instructions.

[0301] When the communication device 2000 is used to implement the method shown in Figures 3-6, the processor 2001 is used to implement the function of the processing unit 1002, and the interface circuit 2002 is used to implement the function of the transceiver unit 1001.

[0302] When the aforementioned communication device is a chip applied to a user equipment (UE), the UE chip implements the functions of the UE in the above method embodiments. The UE chip receives information from the network device, which can be understood as the information being first received by other modules (such as radio frequency modules or antennas) in the UE, and then sent to the UE chip by these modules. The UE chip sends information to the network device, which can be understood as the information being first sent to other modules (such as radio frequency modules or antennas) in the UE, and then sent to the network device by these modules.

[0303] When the aforementioned communication device is a chip applied to a network device, the network device chip implements the functions of the network device in the above method embodiments. The network device chip receives information from the user equipment, which can be understood as the information being first received by other modules (such as radio frequency modules or antennas) in the network device, and then sent to the network device chip by these modules. The network device chip sends information to the user equipment, which can be understood as the information being forwarded to other modules (such as radio frequency modules or antennas) in the network device, and then sent to the user equipment by these modules.

[0304] The processor in the embodiments of this application can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. A general-purpose processor can be a microprocessor or any conventional processor.

[0305] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0306] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0307] This application also provides an electronic device, comprising: one or more processors, a memory, and a computer program stored in the memory and executable on the one or more processors. When the one or more processors execute the computer program, the electronic device enables the electronic device to implement the steps in any of the above methods. When the electronic device is used to execute the steps performed by a user device in the above methods, the electronic device is a user device; when the electronic device is used to execute the steps performed by a network device in the above methods, the electronic device is that network device. That is, the electronic device can be the UE, the second TRP, or the first TRP, respectively used to execute the steps required by each of the three.

[0308] This application also provides a communication system, including a user equipment (UE), a first transmission receiving point (TRP), and a second TRP; the UE is capable of performing the steps performed by the UE in any of the above methods; the first TRP is capable of performing the steps performed by the first TRP in any of the above methods; and the second TRP is capable of performing the steps performed by the second TRP in any of the above methods.

[0309] This application also provides a computer-readable storage medium storing a computer program, which, when executed by an electronic device, can implement the steps in the above-described method embodiments.

[0310] Computer-readable media can include at least: any entity or device capable of carrying computer program code to a photographic / electronic device, recording media, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media. Examples include USB flash drives, portable hard drives, magnetic disks, or optical discs. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electrical carrier signals or telecommunication signals.

[0311] This application provides a computer program product, which includes a computer program that, when executed by an electronic device, can implement the steps described in the various method embodiments above. The computer program includes computer program code, which may be in the form of source code, object code, executable file, or some intermediate form.

[0312] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0313] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0314] In the embodiments provided in this application, it should be understood that the disclosed apparatus / device and method can be implemented in other ways. For example, the apparatus / device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0315] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0316] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0317] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0318] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0319] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0320] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for determining path loss, applied to user equipment (UE), characterized in that, include: In one or more sets of reference signal transmission opportunities, an uplink reference signal is transmitted to the first transmission receiving point (TRP) via the uplink. Each set of reference signal transmission opportunities includes one or more opportunities for transmitting the uplink reference signal. In one or more sets of reference signal transmission opportunities, an uplink reference signal is sent to the second TRP via the uplink. Each set of reference signal transmission opportunities includes one or more opportunities for sending uplink reference signals. The system receives first receive power information sent by the first TRP to the UE via the downlink; the first receive power information is determined based on the uplink reference signal sent by the UE. Based on the first received power information, determine the path loss between the UE and the second TRP, and / or the path loss between the UE and the first TRP.

2. The method according to claim 1, characterized in that, The first received power information is used to indicate the first received power determined according to the uplink reference signal sent by the UE to the first TRP and the second received power determined according to the uplink reference signal sent by the UE to the second TRP; Alternatively, it can be used to indicate the difference between the first received power and the second received power.

3. The method according to claim 1, characterized in that, The step of determining the path loss between the UE and the second TRP based on the first received power information, and / or the path loss between the UE and the first TRP, includes: Determine one or more second transmit powers of the uplink reference signal sent by the UE to the second TRP, each first transmit power corresponding to a reference signal transmission timing set, and each first transmit power including transmit power values ​​of one or more transmission timings; determine the path loss between the UE and the second TRP based on the first receive power information and the one or more second transmit powers.

4. The method according to claim 3, characterized in that, Determining one or more second transmit powers of the uplink reference signal sent by the UE to the second TRP includes: The transmission power of the uplink reference signal sent by the UE to the second TRP is measured to obtain one or more initial transmission powers. Each initial transmission power corresponds to a set of reference signal transmission opportunities, and each initial transmission power includes the transmission power measurement value of one or more transmission opportunities. The one or more initial transmission powers are filtered to obtain the one or more second transmission powers.

5. The method according to claim 1, characterized in that, The step of determining the path loss between the UE and the second TRP based on the first received power information, and / or the path loss between the UE and the first TRP, includes: Determine one or more first transmit powers of the uplink reference signal sent by the UE to the first TRP, each first transmit power corresponding to a reference signal transmission timing set, and each first transmit power including transmit power values ​​of one or more transmission timings; determine the path loss between the UE and the first TRP based on the first receive power information and the one or more first transmit powers.

6. The method according to claim 5, characterized in that, Determining one or more first transmit powers of the uplink reference signal sent by the UE to the first TRP includes: The transmission power of the uplink reference signal sent by the UE to the first TRP is measured to obtain one or more initial transmission powers. Each initial transmission power corresponds to a set of reference signal transmission opportunities, and each initial transmission power includes the transmission power measurement value of one or more transmission opportunities. The one or more initial transmission powers are filtered to obtain the one or more first transmission powers.

7. The method according to claim 3, characterized in that, The step of obtaining the path loss between the UE and the second TRP based on the first received power information and the one or more second transmitted powers includes: When the number of the one or more second transmit powers is one, the path loss between the UE and the second TRP is determined based on the second transmit power and the first receive power information; or, When there are multiple second transmit powers, a third transmit power is determined based on the multiple second transmit powers; and the path loss between the UE and the second TRP is determined based on the third transmit power and the first receive power information.

8. The method according to claim 7, characterized in that, When the number of the one or more second transmission powers is multiple, determining the third transmission power based on the multiple second transmission powers includes: Select at least one fourth transmission power from a plurality of second transmission powers; When the number of the at least one fourth transmission power is one, the fourth transmission power is determined as the third transmission power; or, When there are multiple fourth transmission powers, the third transmission power is determined based on the multiple fourth transmission powers.

9. The method according to claim 8, characterized in that, When there are multiple fourth transmission powers, determining the third transmission power based on the multiple fourth transmission powers includes: The average or weighted average of the multiple fourth transmission powers is determined as the third transmission power.

10. The method according to claim 8, characterized in that, Selecting at least one fourth transmission power from a plurality of second transmission powers includes: The maximum value among the plurality of second transmission powers is determined as the fourth transmission power; or... The transmission power that is greater than the second transmission power threshold among the multiple second transmission powers is determined as the fourth transmission power; or... The transmission power that is greater than the second transmission power threshold and is the maximum value among the multiple second transmission powers is determined as the fourth transmission power; or... The transmission power of the reference signal transmission timing set closest to the first moment among the multiple second transmission power sets is determined as the fourth transmission power. The first moment is the moment before the UE receives the first reception power information, and the time interval between the first moment and the moment when the UE receives the first reception power information is a first preset time interval.

11. The method according to claim 7, characterized in that, When the number of the one or more second transmission powers is multiple, determining the third transmission power based on the multiple second transmission powers includes: The average or weighted average of the multiple second transmission powers is determined as the third transmission power.

12. The method according to claim 3, characterized in that, The step of determining the path loss between the UE and the second TRP based on the first received power information and the one or more second transmitted powers includes: Based on the second received power indicated by the first received power information and the one or more second transmitted powers, the path loss between the UE and the second TRP is determined, wherein the second received power is determined based on the uplink reference signal transmitted by the UE to the second TRP; or, The path loss between the UE and the second TRP is determined based on the difference between the first received power indicated by the first received power information and the second received power, and the one or more second transmit powers. The first received power is determined based on the uplink reference signal sent by the UE to the first TRP.

13. The method according to claim 12, characterized in that, The step of determining the path loss between the UE and the second TRP based on the difference between the first received power and the second received power indicated by the first received power information and the one or more second transmitted powers includes: The path loss between the UE and the second TRP is determined based on the difference between the first received power and the second received power, the one or more second transmitted powers, and the path loss between the UE and the first TRP; the path loss between the UE and the first TRP is determined based on the downlink reference signal sent by the first TRP to the UE.

14. The method according to any one of claims 1 to 13, characterized in that, The method further includes: The reference signal transmission timing set index information and / or weighting coefficient indication information are sent to the UE via the downlink; the reference signal transmission timing set index information is used to indicate information of one or more reference signal transmission timing sets corresponding to the first received power information; the weighting coefficient indication information is used to indicate the weighting coefficient used when determining the first received power and / or the weighting coefficient used when determining the second received power.

15. A method for determining path loss, applied to a second transmission receiving point (TRP), characterized in that, include: In one or more sets of reference signal transmission opportunities, at least one third received power is obtained by measuring the received power of the uplink reference signal from the user equipment (UE), and each third received power corresponds to a set of reference signal transmission opportunities. Each reference signal transmission opportunity set includes one or more opportunities for transmitting uplink reference signals; The second receiving power is determined based on the at least one third receiving power; The second received power is sent to the first TRP so that the first TRP generates first received power information based on the second received power. The first received power information is used to instruct the UE to determine the path loss between the UE and the second TRP based on the first received power information.

16. The method according to claim 15, characterized in that, The step of obtaining at least one third received power by measuring the received power of the uplink reference signal from the user equipment (UE) within one or more sets of reference signal transmission opportunities includes: Measure the received power when receiving uplink reference signals from the UE to obtain one or more initial received powers. Each initial received power corresponds to a set of reference signal transmission opportunities. Each initial received power includes the received power measurement value of one or more transmission opportunities. The one or more initial received powers are filtered to obtain the at least one third received power.

17. The method according to claim 15, characterized in that, Determining the second receiving power based on the at least one third receiving power includes: When the number of the third received power is one, the third received power is determined as the second received power; or, When there are multiple third receiving powers, the second receiving power is determined based on the multiple third receiving powers.

18. The method according to claim 17, characterized in that, When there are multiple third received powers, determining the second received power based on the multiple third received powers includes: From the plurality of third received powers, at least one fourth received power is determined; The second receiving power is determined based on the at least one fourth receiving power.

19. The method according to claim 18, characterized in that, Determining at least one fourth receive power from the plurality of third receive powers includes: The maximum value among the plurality of third received powers is determined as the fourth received power; or... The receiving power that is greater than the second receiving power threshold among the multiple third receiving powers is determined as the fourth receiving power; or... The receiving power that is greater than the second receiving power threshold and is the maximum value among the plurality of third receiving powers is determined as the fourth receiving power.

20. The method according to claim 19, characterized in that, Determining the second received power based on the at least one fourth received power includes: When the number of the at least one fourth receiving power is one, the fourth receiving power is determined to be the first receiving power; or, When there are multiple fourth receiving powers, the second receiving power is determined based on the multiple fourth receiving powers.

21. The method according to claim 20, characterized in that, When there are multiple fourth receiving powers, determining the second receiving power based on the multiple fourth receiving powers includes: The average or weighted average of the multiple fourth received powers is determined as the second received power.

22. The method according to any one of claims 17 to 21, characterized in that, When there are multiple third received powers, determining the second received power based on the multiple third received powers includes: The average or weighted average of the multiple third received powers is determined as the second received power.

23. The method according to claim 16, characterized in that, The step of filtering the one or more initial received powers to obtain the at least one third received power includes: The same filtering algorithm as the filtering operation on the UE side is used for filtering.

24. A method for determining path loss, applied to a first transmission receiving point (TRP), characterized in that, include: In one or more sets of reference signal transmission opportunities, at least one fifth received power is obtained by measuring the received power when receiving an uplink reference signal from a user equipment (UE), and each fifth received power corresponds to a set of reference signal transmission opportunities. Each reference signal transmission opportunity set includes one or more opportunities for transmitting uplink reference signals; The first receiving power is determined based on the at least one fifth receiving power; Receive the second received power from the second TRP; Send first received power information to the UE, wherein the first received power information is used to instruct the UE to determine the path loss between the UE and the second TRP and / or the path loss between the UE and the first TRP based on the first received power information; the first received power information is used to indicate the first received power and the second received power; Alternatively, it can be used to indicate the difference between the first received power and the second received power.

25. The method according to claim 24, characterized in that, The step of obtaining at least one fifth received power by measuring the received power of the uplink reference signal from the user equipment (UE) within one or more sets of reference signal transmission opportunities includes: Measure the received power when receiving uplink reference signals from the UE to obtain one or more initial received powers. Each initial received power corresponds to a set of reference signal transmission opportunities. Each initial received power includes the received power measurement value of one or more transmission opportunities. The one or more initial received powers are filtered to obtain the at least one fifth received power.

26. The method according to claim 24, characterized in that, Determining the first received power based on the at least one fifth received power includes: When the number of the fifth received power is one, the fifth received power is determined as the first received power; or, When there are multiple fifth received powers, the second received power is determined based on the multiple fifth received powers.

27. The method according to claim 26, characterized in that, When there are multiple fifth received powers, determining the first received power based on the multiple fifth received powers includes: From the plurality of said fifth received powers, at least one sixth received power is determined; The first receiving power is determined based on the at least one sixth receiving power.

28. The method according to claim 27, characterized in that, Determining at least one sixth receiving power from a plurality of fifth receiving powers includes: The maximum value among the plurality of fifth received powers is determined as the sixth received power; or... The receiving power that is greater than the first receiving power threshold among the plurality of fifth receiving powers is determined as the sixth receiving power; or, The receiving power that is greater than the first receiving power threshold and is the maximum value among the plurality of fifth receiving powers is determined as the sixth receiving power; or... The receiving power of the reference signal transmission timing set closest to the first moment among the multiple fifth receiving power sets is determined as the sixth receiving power. The first moment is the moment before the moment when the first receiving power information is sent to the UE, and the time interval between the first moment and the moment when the first receiving power information is sent to the UE is a first preset time interval.

29. The method according to claim 27, characterized in that, Determining the first received power based on the at least one sixth received power includes: When the number of the at least one sixth receiving power is one, the sixth receiving power is determined as the first receiving power; or, When there are multiple sixth receiving powers, the first receiving power is determined based on the multiple sixth receiving powers.

30. The method according to claim 29, characterized in that, When there are multiple sixth received powers, determining the first received power based on the multiple sixth received powers includes: The average or weighted average of the plurality of sixth received powers is determined as the first received power.

31. The method according to any one of claims 26 to 30, characterized in that, When there are multiple fifth received powers, determining the first received power based on the multiple fifth received powers includes: The average or weighted average of the multiple fifth received powers is determined as the first received power.

32. The method according to claim 25, characterized in that, The step of filtering the one or more initial received powers to obtain the at least one fifth received power includes: The same filtering algorithm as the filtering operation on the UE side is used for filtering.

33. An electronic device, characterized in that, The electronic device includes: one or more processors, and memory; The memory is coupled to the one or more processors, the memory being used to store computer program code, the computer program code including computer instructions, the one or more processors invoking the computer instructions to cause the electronic device to perform the method as claimed in any one of claims 1 to 14, 15 to 23, or 24 to 32.

34. A communication system, characterized in that, The communication system includes a user equipment (UE), a first transmission receiving point (TRP), and a second TRP; the UE is capable of performing the steps performed by the UE in the method as described in any one of claims 1 to 32; the first TRP is capable of performing the steps performed by the first TRP in the method as described in any one of claims 1 to 32; and the second TRP is capable of performing the steps performed by the second TRP in the method as described in any one of claims 1 to 32.

35. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes instructions that, when executed on an electronic device, cause the electronic device to perform the method as claimed in any one of claims 1 to 14, 15 to 23, or 24 to 32.

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