Method, device and terminal for determining transmission power

Abstract

The present invention provides a method, apparatus, and terminal for determining transmit power, wherein the method comprises: measuring a first reference signal to determine the path loss of the first reference signal; determining the type of uplink transmission and the association between the uplink transmission and the first reference signal, and determining the path loss of the uplink transmission based on the path loss of the first reference signal and the association; determining a power adjustment amount for the uplink transmission; and determining the transmit power of the uplink transmission based on at least one of the following: the path loss of the uplink transmission and the power adjustment amount for the uplink transmission. This method solves the problem in the related art that, in the NR field, the traditional LTE field calculation method is used to calculate the transmit power of the uplink transmission, resulting in inaccurate calculation results.

Description

[0001] This application is a divisional application of the Chinese patent application with application number "201710459678.X", application date "June 16, 2017", and title "Method, device and terminal for determining transmission power". Technical Field

[0002] The present invention relates to the field of communications, and in particular to a method and device for determining transmit power, and a terminal. Background Art

[0003] Currently, the next-generation wireless communication (NR) technology is under development. As the fifth-generation mobile communication system, this technology needs to support an unprecedented number of different application scenarios. It also needs to support traditional frequency bands, high frequency bands, and beamforming methods, which brings great challenges to power control design.

[0004] The transmit power of the Sounding Reference Signal (SRS) in the Long Term Evolution (LTE) technology is determined by parameters of the Physical Uplink Shared Channel (PUSCH). In cells where PUSCH is not configured, the SRS parameters are directly configured.

[0005] Generally, the SRS transmit power is determined by at least one of two parameters: path loss and power adjustment. In traditional LTE scenarios, uplink and downlink generally have reciprocity. Even in scenarios with poor reciprocity, the path loss that characterizes large-scale fading will not differ significantly between the uplink and downlink. Furthermore, SRS and PUSCH also have a corresponding relationship, sharing a power adjustment value. The base station adjusts the power adjustment value command sent to the UE based on the PUSCH reception status.

[0006] In NR multi-beam scenarios, SRS is sent in a beam-based manner, primarily for uplink beam training and uplink channel sounding. Uplink beam training is used to select the appropriate beam, and uplink channel sounding is used to accurately measure the channel. Sending SRS in a multi-beam scenario using the traditional LTE power control method presents the following problems: 1. Because there are many SRS beams, the number of SRS beams may be greater than the number of PUSCHs, resulting in beams where no PUSCH is transmitted. The base station does not send power adjustment commands for these beams, so there is no power adjustment reference for sending SRS on these beams. 2. In beam scenarios, the uplink and downlink reciprocity conditions are more stringent, and it is likely that the traditional path loss for uplink and downlink responses to large-scale fading will also differ significantly.

[0007] Regarding the related technology, in the NR field, the use of traditional LTE calculation methods to calculate the uplink transmission power leads to inaccurate calculation results. No reasonable solution has been proposed so far. Summary of the Invention

[0008] The embodiments of the present invention provide a method, apparatus, and terminal for determining transmit power, which are at least used to solve the problem in the related art that, in the NR field, the transmit power of uplink transmission is calculated using the traditional LTE field calculation method, resulting in inaccurate calculation results.

[0009] According to one aspect of the present invention, a method for determining transmit power is provided, comprising: measuring a first reference signal to determine the path loss of the first reference signal; determining the type of uplink transmission, and an association relationship between the uplink transmission and the first reference signal, and determining the path loss of the uplink transmission based on the path loss of the first reference signal and the association relationship; determining a power adjustment amount for the uplink transmission; and determining the transmit power of the uplink transmission based on at least one of the following: the path loss of the uplink transmission and the power adjustment amount for the uplink transmission.

[0010] Preferably, the type of uplink transmission includes at least one of the following: a physical uplink shared channel, a physical uplink control channel, and a sounding reference signal.

[0011] Preferably, the association relationship between the uplink transmission and the first reference signal includes: the uplink transmission and the first reference signal satisfy the channel characteristic assumption, wherein, when the uplink transmission is a physical uplink shared channel, the demodulation reference signal of the physical uplink shared channel and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, uplink and downlink reference signal association; when the uplink transmission is a physical uplink control channel, the demodulation reference signal of the physical uplink control channel and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, uplink and downlink reference signal association; when the uplink transmission is a sounding reference signal, the sounding reference signal and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, uplink and downlink reference signal association.

[0012] Preferably, the first reference signal is a set comprising L reference signals, where L is an integer greater than or equal to 1;

[0013] Determining the path loss of the first reference signal includes determining L path losses corresponding to the L reference signals based on the first reference signal.

[0014] Preferably, determining the path loss of the uplink transmission path according to the L path losses includes one of the following:

[0015] Taking the maximum value of the L path losses;

[0016] Taking the minimum value of the L path losses;

[0017] Take a weighted average of the L path losses.

[0018] Preferably, the method further comprises:

[0019] Determining a sending mode and / or a receiving mode of the uplink transmission through second reference signal resource indication information; or

[0020] The sending mode and / or receiving mode of the uplink transmission is determined in a predefined manner.

[0021] Preferably, the second reference signal resource includes at least one of the following: a time domain resource, a frequency domain resource, a sending and / or receiving mode of second reference signal transmission;

[0022] The second reference signal resource indication information is used to indicate that Y second reference signal resources are determined from X second reference signal resources, where X is an integer greater than or equal to 1, Y is an integer greater than or equal to 1, and Y is less than X.

[0023] Preferably, the second reference signal comprises at least one type of reference signal;

[0024] When the first reference signal and the second reference signal are reference signals of the same type, the second reference signal is a subset of the first reference signal.

[0025] Preferably, the first reference signal includes at least one of the following: a channel state information reference signal, a secondary synchronization signal, and a demodulation reference signal of a physical broadcast channel;

[0026] The second reference signal includes at least one of the following: a channel state information reference signal, a sounding reference signal, a secondary synchronization signal, and a demodulation reference signal of a physical broadcast channel.

[0027] Preferably, the method further comprises: updating the power adjustment amount of the uplink transmission according to the indication information.

[0028] Preferably, determining the transmit power of the uplink transmission includes:

[0029] When the uplink transmission is a beam failure recovery request sent for the first time, the transmission power of the beam failure recovery request sent for the first time is determined to be a first power.

[0030] Preferably, the method further comprises:

[0031] When no response to the beam failure recovery request is detected in one or more physical downlink control channel search spaces after the initially transmitted beam failure recovery request is sent, determining that the transmit power for retransmitting the beam failure recovery request is a second power; or

[0032] When the beam failure recovery request is sent for the first time, no response to the beam failure recovery request is detected in one or more physical downlink control channel search spaces, and it is determined that the retransmission does not exceed the preset maximum number of transmissions and / or the cumulative duration does not exceed the preset timing threshold, the transmission power of the retransmission beam failure recovery request is determined to be the second power.

[0033] Preferably, the first power is determined by:

[0034] determining resources for transmitting the beam failure recovery request;

[0035] The first power is determined according to a sending mode and / or a receiving mode of the beam failure recovery request transmission.

[0036] Preferably, the second power is determined by:

[0037] On the premise of not exceeding a preset maximum transmit power, the second power is the sum of the transmit power of the previous transmission beam failure recovery request and the power ramp-up value deltaP_rampup, wherein the power ramp-up value deltaP_rampup is directly configured or determined according to the following formula:

[0038] deltaP_rampup=max{default ramp-up value, (maximum transmit power - first power) / (maximum number of transmit times - 1)}

[0039] The default ramp value and maximum number of transmissions are configured directly, and the maximum transmit power is configured directly or calculated based on preset rules.

[0040] Preferably, when it is determined according to the indication of the base station that the type of uplink transmission is a sounding reference signal and is used for beam scanning, the terminal groups the sounding reference signal ports according to a preset condition, and the sounding reference signals in the same group use the same transmit power, and the preset condition includes at least one of the following:

[0041] The reference signal port is detected to meet the channel characteristic assumption;

[0042] The reference signal antenna ports indicated by the same downlink reference signal index are used under reciprocity.

[0043] According to another aspect of the present invention, there is also provided a device for determining transmit power, comprising:

[0044] A first determining module, configured to measure a first reference signal and determine a path loss of the first reference signal;

[0045] a second determining module, configured to determine a type of uplink transmission and an association relationship between the uplink transmission and the first reference signal, and determine a path loss of the uplink transmission based on a path loss of the first reference signal and the association relationship;

[0046] A third determining module, configured to determine a power adjustment amount for the uplink transmission;

[0047] The fourth determination module is configured to determine the transmit power of the uplink transmission according to at least one of the following: the path loss of the uplink transmission, and the power adjustment amount of the uplink transmission.

[0048] Preferably, the type of uplink transmission includes at least one of the following: a physical uplink shared channel, a physical uplink control channel, and a sounding reference signal.

[0049] Preferably, the association relationship between the uplink transmission and the first reference signal includes: the uplink transmission and the first reference signal satisfy a channel characteristic assumption, wherein:

[0050] When the uplink transmission is a physical uplink shared channel, a demodulation reference signal of the physical uplink shared channel and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, and uplink and downlink reference signal association;

[0051] When the uplink transmission is a physical uplink control channel, a demodulation reference signal DMRS of the physical uplink control channel and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, and uplink and downlink reference signal association;

[0052] When the uplink transmission is a sounding reference signal, the sounding reference signal and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, and uplink and downlink reference signal association.

[0053] Preferably, the first reference signal is a set comprising L reference signals, where L is an integer greater than or equal to 1;

[0054] The first determining module includes a first determining unit, and the first determining unit is configured to determine L path losses corresponding to the L reference signals according to the first reference signal.

[0055] Preferably, the first determining unit is further configured to:

[0056] Taking the maximum value of the L path losses;

[0057] Taking the minimum value of the L path losses;

[0058] Take a weighted average of the L path losses.

[0059] Preferably, the second determining module further includes:

[0060] A second determining unit, configured to determine a sending mode and / or a receiving mode of the uplink transmission according to second reference signal resource indication information;

[0061] The third determining unit is configured to determine the sending mode and / or receiving mode of the uplink transmission in a predefined manner.

[0062] Preferably, the second reference signal resource includes at least one of the following: a time domain resource, a frequency domain resource, a sending and / or receiving mode of second reference signal transmission;

[0063] The second reference signal resource indication information is used to indicate that Y second reference signal resources are determined from X second reference signal resources, where X is an integer greater than or equal to 1, Y is an integer greater than or equal to 1, and Y is less than X.

[0064] Preferably, the first reference signal and the second reference signal are reference signals of the same type and / or different types. When the first reference signal and the second reference signal are reference signals of the same type, the second reference signal is a subset of the first reference signal.

[0065] Preferably, the first reference signal includes at least one of the following: a channel state information reference signal, a secondary synchronization signal, and a demodulation reference signal of a physical broadcast channel;

[0066] The second reference signal includes at least one of the following: a channel state information reference signal, a sounding reference signal, a secondary synchronization signal, and a demodulation reference signal of a physical broadcast channel.

[0067] Preferably, the device further comprises: a first updating module, configured to update the power adjustment amount of the uplink transmission according to the indication information.

[0068] Preferably, the fourth determination module is further used to: when the uplink transmission is a beam failure recovery request sent for the first time, determine that the transmission power of the beam failure recovery request sent for the first time is the first power.

[0069] Preferably, the fourth determining module is further configured to:

[0070] When no response to the beam failure recovery request is detected in one or more physical downlink control channel search spaces after the initially sent beam failure recovery request is sent, the terminal determines that the transmission power for retransmitting the beam failure recovery request is a second power;

[0071] When the beam failure recovery request is sent for the first time, no response to the beam failure recovery request is detected in one or more physical downlink control channel search spaces associated with the terminal, and it is determined that the retransmission does not exceed the preset maximum number of transmissions and / or the cumulative duration does not exceed the preset timing threshold, the transmission power of the retransmission beam failure recovery request is determined to be the second power.

[0072] Preferably, the first power is determined by:

[0073] determining resources for transmitting the beam failure recovery request;

[0074] The first power is determined according to a sending mode and / or a receiving mode of the beam failure recovery request transmission.

[0075] Preferably, the second power is determined by:

[0076] On the premise of not exceeding a preset maximum transmit power, the second power is the sum of the transmit power of the previous transmission beam failure recovery request and the power ramp-up value deltaP_rampup, wherein the power ramp-up value deltaP_rampup is directly configured or determined according to the following formula:

[0077] deltaP_rampup=max{default ramp-up value, (maximum transmit power - first power) / (maximum number of transmit times - 1)}

[0078] The default ramp value and maximum number of transmissions are configured directly, and the maximum transmit power is configured directly or calculated based on preset rules.

[0079] Preferably, when the second determining module determines that the type of the uplink transmission is a sounding reference signal and is used for beam scanning, the apparatus further includes:

[0080] A grouping module is used to group the sounding reference signal ports according to preset conditions, and the sounding reference signals in the same group use the same transmission power, wherein the preset conditions include at least one of the following: satisfying the channel characteristic assumption sounding reference signal port; using the reference signal antenna port indicated by the same downlink reference signal index under reciprocity.

[0081] According to another aspect of the present invention, a storage medium is provided, which includes a stored program, wherein the above method and its preferred embodiments are executed when the program is run.

[0082] According to another aspect of the present invention, a terminal is provided, comprising: a processor; a memory for storing instructions executable by the processor; the processor for performing the following operations according to the instructions stored in the memory:

[0083] measuring a first reference signal to determine a path loss of the first reference signal;

[0084] determining a type of uplink transmission and an association relationship between the uplink transmission and the first reference signal, and determining a path loss of the uplink transmission based on a path loss of the first reference signal and the association relationship;

[0085] determining a power adjustment amount for the uplink transmission;

[0086] The transmit power of the uplink transmission is determined according to at least one of the following: a path loss of the uplink transmission, and a power adjustment amount of the uplink transmission.

[0087] Preferably, the type of uplink transmission includes at least one of the following: a physical uplink shared channel (PHSC), a physical uplink control channel (PHCC), and a sounding reference signal (SRS).

[0088] Preferably, the association relationship between the uplink transmission and the first reference signal includes: the uplink transmission and the first reference signal satisfy a channel characteristic assumption, wherein:

[0089] When the uplink transmission is a physical uplink shared channel, a demodulation reference signal DMRS of the physical uplink shared channel and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, and uplink and downlink reference signal association;

[0090] When the uplink transmission is a physical uplink control channel, a demodulation reference signal DMRS of the physical uplink control channel and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, and uplink and downlink reference signal association;

[0091] When the uplink transmission is a sounding reference signal, the sounding reference signal and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, and uplink and downlink reference signal association.

[0092] Preferably, the processor is further configured to perform the following operations according to the instructions stored in the memory:

[0093] Determining a sending mode and / or a receiving mode of the uplink transmission through the second reference signal resource indication information;

[0094] The sending mode and / or receiving mode of the uplink transmission is determined in a predefined manner.

[0095] Preferably, the second reference signal resource includes at least one of the following: a time domain resource, a frequency domain resource, a sending and / or receiving mode of second reference signal transmission;

[0096] The second reference signal resource indication information is used to indicate that Y second reference signal resources are determined from X second reference signal resources, where X is an integer greater than or equal to 1, Y is an integer greater than or equal to 1, and Y is less than X.

[0097] Preferably, the processor is further used to perform the following operations according to the instructions stored in the memory: when the uplink transmission is a beam failure recovery request sent for the first time, determine that the transmission power of the beam failure recovery request sent for the first time is a first power.

[0098] Preferably, the processor is further configured to perform the following operations according to the instructions stored in the memory:

[0099] When no response to the beam failure recovery request is detected in one or more physical downlink control channel (PDCCH) search spaces after the initially transmitted beam failure recovery request is sent, determining that the transmit power for retransmitting the beam failure recovery request is a second power;

[0100] When the beam failure recovery request is sent for the first time, no response to the beam failure recovery request is detected in one or more physical downlink control channel PDCCH search spaces, and it is determined that the retransmission does not exceed the preset maximum number of transmissions and / or the cumulative duration does not exceed the preset timing threshold, the transmission power of the retransmission beam failure recovery request is determined to be the second power.

[0101] Through the above scheme, the first reference signal transmitted is measured to determine the path loss of the first reference signal; then the type of uplink transmission and the association relationship between the uplink transmission and the first reference signal are determined, and the path loss of the uplink transmission is determined based on the path loss of the first reference signal and the association relationship; the power adjustment amount of the uplink transmission is determined according to the instruction of the base station; and then the transmit power of the uplink transmission is determined based on at least one of the following: the path loss of the uplink transmission, the power adjustment amount of the uplink transmission. This solves the problem in the related art that, in the NR field, the traditional LTE field calculation method is used to calculate the transmit power of the uplink transmission, resulting in inaccurate calculation results. In the multi-beam uplink transmission of NR, the relevant path loss and power adjustment amount can be accurately calculated, thereby obtaining a highly reliable transmit power for the uplink transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0102] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0103] Figure 1 is a flow chart of an optional method for determining transmit power according to an embodiment of the present invention;

[0104] Figure 2 is a structural block diagram of an optional apparatus for determining transmit power according to an embodiment of the present invention;

[0105] Figure 3 is a structural block diagram of an optional terminal according to an embodiment of the present invention;

[0106] Figure 4 It is an optional beam correspondence diagram between a base station and a terminal in embodiment 3 of the present invention. DETAILED DESCRIPTION

[0107] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0108] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0109] Example 1

[0110] In an embodiment of the present invention, a method for determining transmit power is provided. Figure 1 FIG. 1 is a flow chart of an optional method for determining transmit power according to an embodiment of the present invention. Figure 1 As shown, an optional process of the method for determining the transmit power includes:

[0111] Step S101: measuring a first reference signal to determine a path loss of the first reference signal;

[0112] Step S103: determining the type of uplink transmission and the association relationship between the uplink transmission and the first reference signal, and determining the path loss of the uplink transmission according to the path loss of the first reference signal and the association relationship;

[0113] Step S105, determining the power adjustment amount for uplink transmission;

[0114] Step S107: determining the transmit power of the uplink transmission according to at least one of the following: the path loss of the uplink transmission, and the power adjustment amount of the uplink transmission.

[0115] Through the above method, the first reference signal transmitted is measured to determine the path loss of the first reference signal; then, the type of uplink transmission and the association relationship between the uplink transmission and the first reference signal are determined, and the path loss of the uplink transmission is determined based on the path loss of the first reference signal and the association relationship; the power adjustment amount of the uplink transmission is determined based on the instruction of the base station; and then, the transmit power of the uplink transmission is determined based on at least one of the following: the path loss of the uplink transmission and the power adjustment amount of the uplink transmission. This solves the problem in the related art that, in the NR field, the traditional LTE field calculation method is used to calculate the transmit power of the uplink transmission, resulting in inaccurate calculation results. In the multi-beam uplink transmission of NR, the relevant path loss and power adjustment amount can be accurately calculated, thereby obtaining a highly reliable transmit power for the uplink transmission.

[0116] Preferably, the type of uplink transmission includes at least one of the following: a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, and a sounding reference signal SRS.

[0117] Preferably, the association relationship between the uplink transmission and the first reference signal includes: the uplink transmission and the first reference signal satisfy the channel characteristic assumption, wherein, when the uplink transmission is PUSCH, the demodulation reference signal DMRS of the PUSCH and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, uplink and downlink reference signal association; when the uplink transmission is PUCCH, the demodulation reference signal DMRS of the PUCCH and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, uplink and downlink reference signal association; when the uplink transmission is SRS, the SRS and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, uplink and downlink reference signal association.

[0118] Preferably, the association relationship between the uplink transmission and the first reference signal may also be: the transmit beam of the uplink transmission is associated with the receive beam of the first reference signal.

[0119] Preferably, the association relationship between the uplink transmission and the first reference signal may also be: the sending mode of the uplink transmission and the receiving mode of the first reference signal correspond to the same beam or beam set of the UE.

[0120] Preferably, the first reference signal is a set of L reference signals, where L is an integer greater than or equal to 1; the terminal determines the path loss of the first reference signal including: the terminal determines L path losses corresponding to the L reference signals based on the first reference signal.

[0121] Preferably, the terminal determines the path loss of the uplink transmission path based on L path losses, including one of the following: taking the maximum value of the L path losses; taking the minimum value of the L path losses; taking the weighted average of the L path losses.

[0122] Preferably, the method also includes: the terminal determines the sending mode and / or receiving mode of the uplink transmission through the second reference signal resource indication information sent by the base station; or the terminal determines the sending mode and / or receiving mode of the uplink transmission through a predefined method.

[0123] Preferably, the second reference signal resource includes at least one of the following: a time domain resource, a frequency domain resource, and a sending and / or receiving mode for second reference signal transmission; the second reference signal resource indication information is used to indicate that Y second reference signal resources are determined from X second reference signal resources, where X is an integer greater than or equal to 1, Y is an integer greater than or equal to 1, and Y is less than X.

[0124] Preferably, the first reference signal and the second reference signal are reference signals of the same type and / or different types. When the first reference signal and the second reference signal are reference signals of the same type, the second reference signal is a subset of the first reference signal.

[0125] Preferably, the first reference signal includes at least one of the following: channel state information reference signal CSI-RS, secondary synchronization signal SSS, demodulation reference signal DMRS of physical broadcast channel PBCH; the second reference signal includes at least one of the following: CSI-RS, SRS, SSS, DMRS of PBCH.

[0126] Preferably, the method further comprises: the terminal updating the power adjustment amount of the uplink transmission according to an instruction of the base station; or the terminal updating the power adjustment amount of the uplink transmission within a preset time.

[0127] It should be noted that the power adjustment amount has a validity period. If it is not updated within a predetermined time, the power adjustment amount expires. The predetermined time is a pre-configured time, which can be the number of slots, the number of subframes, the number of frames, the number of OFDM symbols, or the number of microseconds, milliseconds or seconds. When the power adjustment amount of the link to be transmitted has not expired, the transmit power is calculated using this value and the PL of the link to be transmitted. When the power adjustment amount of the link to be transmitted does not exist or has expired, the non-expired power adjustment amounts of other links of the sender of the link to be transmitted are referenced. When the number of referenceable power adjustment amounts that meet the conditions is greater than 1, multiple reference power adjustment values jointly determine a comprehensive power adjustment amount, and the transmit power is calculated using this comprehensive power adjustment amount and the PL of the link to be transmitted.

[0128] Preferably, the terminal determines the transmission power of the uplink transmission including: when the uplink transmission is a beam failure recovery request sent for the first time, the terminal determines the transmission power of the beam failure recovery request sent for the first time to be a first power.

[0129] Preferably, the method also includes: when the initially sent beam failure recovery request is issued, the terminal does not detect a response from the base station side on one or more physical downlink control channel PDCCH search spaces, the terminal determines that the transmission power for retransmitting the beam failure recovery request is the second power; or, when the initially sent beam failure recovery request is issued, the terminal does not detect a response from the base station side on one or more physical downlink control channel PDCCH search spaces, and judges that the retransmission does not exceed the preset maximum number of transmissions and / or the cumulative duration does not exceed the preset timing threshold, the terminal determines that the transmission power for retransmitting the beam failure recovery request is the second power.

[0130] Preferably, the first power is determined by: the terminal determining a resource for transmitting the beam failure recovery request; and the terminal determining the first power based on a sending mode and / or a receiving mode for transmitting the resource for the beam failure recovery request. It should be noted that the sending mode herein includes sending a beam, and the receiving mode includes receiving a beam.

[0131] Preferably, the second power is determined by the following method: under the premise of not exceeding the preset maximum transmit power, the second power is the transmit power of the previous transmission beam failure recovery request and the power ramp-up value deltaP_ rampup The sum of the power increase value deltaP_ rampup Is directly accepted by the configured or the power climb value deltaP_ rampup The terminal determines deltaP by the following formula: rampup =max{default climbing value, (maximum transmission power - first power) / (maximum number of transmission times - 1)}

[0132] The default ramp-up value and the maximum number of transmissions are directly configured, and the maximum transmit power is directly configured or calculated by the UE according to a preset rule.

[0133] The retransmission power adjustment of the beam failure recovery request message for beam failure makes the beam failure recovery request message more robust and helps to quickly restore the link.

[0134] Preferably, when the terminal determines that the type of uplink transmission is SRS according to the indication of the base station and is used for beam scanning, the terminal groups the resources of the SRS according to preset conditions, and the SRS in the same group uses the same transmission power. The preset conditions include at least one of the following: satisfying the channel characteristic assumption to detect the reference signal port; using the reference signal antenna port indicated by the same downlink reference signal index under reciprocity.

[0135] It should be noted that in beam sweeping, the transmit power is set by group, allowing each group of beams to select a more appropriate power, avoiding the limitations of using a unified transmit power. When the UE performs uplink beam scanning, one or more SRS resources that meet the channel characteristic assumption, or use the same downlink reference signal index indicated SRS antenna ports under reciprocity, use the same transmit power. The channel characteristic assumptions include at least the following: quasi-co-site QCL assumption, reciprocal QCL assumption, spatial QCL assumption, and spatial reciprocal QCL assumption.

[0136] If there is an unexpired power adjustment amount in an SRS group using the same transmit power, the transmit power of the SRS group is calculated using the unexpired power adjustment amount and the PL value of the SRS to which the unexpired power adjustment amount belongs.

[0137] If there is no unexpired power adjustment amount in the first SRS group using the same transmit power, but there is an SRS with a valid PL value, and there is an unexpired power adjustment amount in the second SRS group of the UE, then an alternative power adjustment amount for the first SRS group is calculated with reference to the unexpired power adjustment amount in the second SRS group. The transmit power of the first SRS group is calculated using the alternative power adjustment amount and the PL value of the first SRS.

[0138] If there is no unexpired power adjustment value in the first SRS group using the same transmit power and all SRSs have no valid PL value, the UE takes the maximum transmit power of other SRS groups as the transmit power of the first SRS group.

[0139] Example 2

[0140] This embodiment also provides an optional device for determining transmit power, which is used to implement the above-mentioned embodiments and preferred implementations. Details already described are omitted for clarity. As used below, the term "module" may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0141] According to an embodiment of the present invention, a device for implementing the above-mentioned method for determining transmit power is also provided, which is applied to a terminal. Figure 2 FIG. 1 is a block diagram of an optional device for determining transmit power according to an embodiment of the present invention. Figure 2 As shown, the device includes:

[0142] A first determining module 20 is configured to measure a first reference signal sent by a base station and determine a path loss of the first reference signal;

[0143] A second determining module 22 is configured to determine the type of uplink transmission and the association between the uplink transmission and the first reference signal according to an instruction of the base station, and determine the path loss of the uplink transmission from the path loss of the first reference signal according to the association;

[0144] A third determining module 24 is configured to determine an uplink transmission power adjustment amount according to an instruction of the base station;

[0145] The fourth determining module 26 is configured to determine the transmit power of the uplink transmission according to at least one of the following: a path loss of the uplink transmission, and a power adjustment amount of the uplink transmission.

[0146] Through the above-mentioned device, the first determination module 20 measures the first reference signal sent by the base station and determines the path loss of the first reference signal; the second determination module 22 determines the type of uplink transmission and the association relationship between the uplink transmission and the first reference signal according to the instruction of the base station, and determines the path loss of the uplink transmission from the path loss of the first reference signal according to the association relationship; the third determination module 24 determines the power adjustment amount of the uplink transmission according to the instruction of the base station; and the fourth determination module 26 determines the transmit power of the uplink transmission according to at least one of the following: the path loss of the uplink transmission and the power adjustment amount of the uplink transmission. This solves the problem in the related art that, in the NR field, the calculation method used in the traditional LTE field to calculate the transmit power of the uplink transmission leads to inaccurate calculation results. In the multi-beam uplink transmission of NR, the relevant path loss and power adjustment amount can be accurately calculated, thereby obtaining a highly reliable transmit power of the uplink transmission.

[0147] Preferably, the type of uplink transmission includes at least one of the following: a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, and a sounding reference signal SRS.

[0148] Preferably, the association relationship between the uplink transmission and the first reference signal includes: the uplink transmission and the first reference signal satisfy the channel characteristic assumption, wherein, when the uplink transmission is PUSCH, the demodulation reference signal DMRS of the PUSCH and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, uplink and downlink reference signal association; when the uplink transmission is PUCCH, the demodulation reference signal DMRS of the PUCCH and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, uplink and downlink reference signal association; when the uplink transmission is SRS, the SRS and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, uplink and downlink reference signal association.

[0149] Preferably, the first reference signal is a set of L reference signals, where L is an integer greater than or equal to 1; the first determination module includes a first determination unit, and the first determination unit is used to determine L path losses corresponding to the L reference signals based on the first reference signal.

[0150] Preferably, the first determining unit is further used to: take the maximum value of the L path losses; take the minimum value of the L path losses; and take the weighted average value of the L path losses.

[0151] Preferably, the second determination module also includes: a second determination unit, used to determine the sending mode and / or receiving mode of the uplink transmission through the second reference signal resource indication information sent by the base station; a third determination unit, used to determine the sending mode and / or receiving mode of the uplink transmission in a predefined manner.

[0152] Preferably, the second reference signal resource includes at least one of the following: a time domain resource, a frequency domain resource, and a sending and / or receiving mode for second reference signal transmission; the second reference signal resource indication information is used to indicate that Y second reference signal resources are determined from X second reference signal resources, where X is an integer greater than or equal to 1, Y is an integer greater than or equal to 1, and Y is less than X.

[0153] Preferably, the first reference signal and the second reference signal are reference signals of the same type and / or different types. When the first reference signal and the second reference signal are reference signals of the same type, the second reference signal is a subset of the first reference signal.

[0154] Preferably, the first reference signal includes at least one of the following: CSI-RS, SSS, DMRS of PBCH; the second reference signal includes at least one of the following: CSI-RS, SRS, SSS, DMRS of PBCH.

[0155] Preferably, the apparatus further comprises: a first updating module, configured to update the power adjustment amount of the uplink transmission according to an instruction of the base station.

[0156] It should be noted that the power adjustment amount has a validity period. If it is not updated within a predetermined time, the power adjustment amount expires. The predetermined time is a pre-configured time, which can be the number of slots, the number of subframes, the number of frames, the number of OFDM symbols, or the number of microseconds, milliseconds or seconds. When the power adjustment amount of the link to be transmitted has not expired, the transmit power is calculated using this value and the PL of the link to be transmitted. When the power adjustment amount of the link to be transmitted does not exist or has expired, the non-expired power adjustment amounts of other links of the sender of the link to be transmitted are referenced. When the number of referenceable power adjustment amounts that meet the conditions is greater than 1, multiple reference power adjustment values jointly determine a comprehensive power adjustment amount, and the transmit power is calculated using this comprehensive power adjustment amount and the PL of the link to be transmitted.

[0157] Preferably, the fourth determination module is further used to: when the uplink transmission is a beam failure recovery request sent for the first time, determine that the transmission power of the beam failure recovery request sent for the first time is the first power.

[0158] Preferably, the fourth determination module is also used for: when the initially sent beam failure recovery request is issued, if the terminal does not detect a response from the base station side on one or more physical downlink control channel PDCCH search spaces, the terminal determines that the transmission power for retransmitting the beam failure recovery request is the second power; when the initially sent beam failure recovery request is issued, if the base station side response is not detected on one or more physical downlink control channel PDCCH search spaces associated with the terminal, and it is judged that the retransmission does not exceed the preset maximum number of transmissions and / or the cumulative duration does not exceed the preset timing threshold, the transmission power for retransmitting the beam failure recovery request is determined to be the second power.

[0159] Preferably, the first power is determined in the following manner: the terminal determines the resources for transmitting the beam failure recovery request; the terminal determines the first power according to the sending mode and / or receiving mode of the beam failure recovery request transmission.

[0160] Preferably, the second power is determined by the following method: under the premise of not exceeding the preset maximum transmit power, the second power is the transmit power of the previous transmission beam failure recovery request and the power ramp-up value deltaP_ rampup The sum of the power increase value deltaP_ rampup Is directly accepted by the configured or the power climb value deltaP_ rampup The terminal determines deltaP by the following formula: rampup =max{default climbing value, (maximum transmission power - first power) / (maximum number of transmission times - 1)}

[0161] The default ramp-up value and the maximum number of transmissions are directly configured, and the maximum transmit power is directly configured or calculated by the UE according to a preset rule.

[0162] Preferably, when the second determination module determines that the type of uplink transmission is SRS according to the indication of the base station and is used for beam scanning, the device also includes: a grouping module, which is used to group the SRS resources according to preset conditions when the terminal performs uplink beam scanning, and the SRS in the same group uses the same transmission power, wherein the preset conditions include at least one of the following: satisfying the channel characteristic assumption to detect the reference signal port; using the reference signal antenna port indicated by the same downlink reference signal index under reciprocity.

[0163] It should be noted that in beam sweeping, the transmit power is set by group, allowing each group of beams to select a more appropriate power, avoiding the limitations of using a unified transmit power. When the UE performs uplink beam scanning, one or more SRS resources that meet the channel characteristic assumption, or use the same downlink reference signal index indicated SRS antenna ports under reciprocity, use the same transmit power. The channel characteristic assumptions include at least the following: quasi-co-site QCL assumption, reciprocal QCL assumption, spatial QCL assumption, and spatial reciprocal QCL assumption.

[0164] If there is an unexpired power adjustment amount in an SRS group using the same transmit power, the transmit power of the SRS group is calculated using the unexpired power adjustment amount and the PL value of the SRS to which the unexpired power adjustment amount belongs.

[0165] If there is no unexpired power adjustment amount in the first SRS group using the same transmit power, but there is an SRS with a valid PL value, and there is an unexpired power adjustment amount in the second SRS group of the UE, then an alternative power adjustment amount for the first SRS group is calculated with reference to the unexpired power adjustment amount in the second SRS group. The transmit power of the first SRS group is calculated using the alternative power adjustment amount and the PL value of the first SRS.

[0166] If there is no unexpired power adjustment value in the first SRS group using the same transmit power and all SRSs have no valid PL value, the UE takes the maximum transmit power of other SRS groups as the transmit power of the first SRS group.

[0167] According to another aspect of the present invention, a storage medium is provided, which includes a stored program, wherein the above method and its preferred embodiments are executed when the program is run.

[0168] In order to better understand the above technical solution, an embodiment of the present invention further provides a terminal for implementing the above method for determining the transmission power, which can also serve as the carrier of the above device. Figure 3 FIG. 1 is a block diagram of an optional terminal according to an embodiment of the present invention. Figure 3 As shown, an embodiment of the present invention also provides a terminal, including: a processor 30; a memory 32, for storing instructions executable by the processor 30; the processor 30 is used to perform the following operations according to the instructions stored in the memory 32: measure the first reference signal sent by the base station, and determine the path loss of the first reference signal; determine the type of uplink transmission and the association relationship between the uplink transmission and the first reference signal according to the indication of the base station, and determine the path loss of the uplink transmission from the path loss of the first reference signal according to the association relationship; determine the power adjustment amount of the uplink transmission according to the indication of the base station; determine the transmission power of the uplink transmission according to at least one of the following: path loss of uplink transmission, power adjustment amount of uplink transmission.

[0169] Through the above-mentioned terminal, the processor 30 performs the following operations according to the instructions stored in the memory 32: measuring the first reference signal sent by the base station and determining the path loss of the first reference signal; determining the type of uplink transmission and the association relationship between the uplink transmission and the first reference signal according to the instruction of the base station, and determining the path loss of the uplink transmission from the path loss of the first reference signal according to the association relationship; determining the power adjustment amount of the uplink transmission according to the instruction of the base station; and determining the transmit power of the uplink transmission according to at least one of the following: the path loss of the uplink transmission and the power adjustment amount of the uplink transmission. This solves the problem in the related art that, in the NR field, the traditional LTE field calculation method is used to calculate the transmit power of the uplink transmission, resulting in inaccurate calculation results. In the multi-beam uplink transmission of NR, the relevant path loss and power adjustment amount can be accurately calculated, thereby obtaining a highly reliable transmit power for the uplink transmission.

[0170] Preferably, the type of uplink transmission includes at least one of the following: a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, and a sounding reference signal SRS.

[0171] Preferably, the association relationship between the uplink transmission and the first reference signal includes: the uplink transmission and the first reference signal satisfy the channel characteristic assumption, wherein, when the uplink transmission is PUSCH, the demodulation reference signal DMRS of the PUSCH and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, uplink and downlink reference signal association; when the uplink transmission is PUCCH, the demodulation reference signal DMRS of the PUCCH and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, uplink and downlink reference signal association; when the uplink transmission is SRS, the SRS and the first reference signal satisfy at least one of the following: quasi-co-location assumption, reciprocal quasi-co-location assumption, spatial reciprocal quasi-co-location assumption, beam association, uplink and downlink reference signal association.

[0172] Preferably, the processor is also used to perform the following operations according to the instructions stored in the memory: determining the sending mode and / or receiving mode of the uplink transmission through the second reference signal resource indication information sent by the base station; determining the sending mode and / or receiving mode of the uplink transmission through a predefined method.

[0173] Preferably, the second reference signal resource includes at least one of the following: a time domain resource, a frequency domain resource, and a sending and / or receiving mode for second reference signal transmission; the second reference signal resource indication information is used to indicate that Y second reference signal resources are determined from X second reference signal resources, where X is an integer greater than or equal to 1, Y is an integer greater than or equal to 1, and Y is less than X.

[0174] Preferably, the processor is further used to perform the following operations according to the instructions stored in the memory: when the uplink transmission is a beam failure recovery request sent for the first time, the terminal determines that the transmission power of the beam failure recovery request sent for the first time is a first power.

[0175] Preferably, the processor is also used to perform the following operations according to the instructions stored in the memory: when the initially sent beam failure recovery request is issued, if the terminal does not detect a response from the base station side on one or more physical downlink control channel PDCCH search spaces, the terminal determines that the transmission power for retransmitting the beam failure recovery request is the second power; when the initially sent beam failure recovery request is issued, if the terminal does not detect a response from the base station side on one or more physical downlink control channel PDCCH search spaces, and judges that the retransmission does not exceed the preset maximum number of transmissions and / or the cumulative duration does not exceed the preset timing threshold, the terminal determines that the transmission power for retransmitting the beam failure recovery request is the second power.

[0176] The terminal provided in the embodiment of the present invention is also used to execute the above-mentioned method for determining the transmission power and its preferred implementation methods, which have been described and will not be repeated here.

[0177] Example 3

[0178] In order to better understand the technical solution of the present invention, the embodiments of the present invention are further described through the following specific implementation methods.

[0179] In wireless communication systems, transmit power control is necessary to reduce power consumption of transmitters and minimize interference with other transmissions caused by unnecessary high-power transmissions. Factors such as the communication range, the maximum transmit power and receive sensitivity of both transmitters and receivers, the data modulation and coding scheme and rate, the operating frequency band, and the bandwidth occupied by the transmission all influence transmit power. Generally, it is necessary to use the lowest transmit power possible while still meeting the signal quality requirements of the receiver.

[0180] In typical communications technology, communication node 1 transmits a reference signal, and communication node 2 measures the path loss (PL) from node 1 to node 2 based on this reference signal. PL is calculated as the transmit power of node 1's reference signal minus the power of the reference signal received by node 2. Node 2 assumes that the PL of the transmission channel from node 2 to node 1 is the same as the PL of the channel from node 1 to node 2 and sets its transmit power so that the received power at the receiving end meets the required reception. Because PL is a unilateral measurement result, it constitutes the open-loop component of transmit power control. After receiving the transmission, node 2 analyzes it and provides power adjustment information to node 1 based on the reception quality. This process constitutes closed-loop power control. In LTE, the link from the base station to the terminal is the downlink, and the link from the terminal to the base station is the uplink. The downlink power is determined by the base station based on the channel measurement results of each scheduled UE and the scheduling algorithm. Uplink power control uses a combination of open-loop and closed-loop methods. The power control factor determined by the UE's measurements constitutes the open-loop component, while the power control factor measured and fed back to the UE by the base station constitutes the closed-loop component. In addition, there are specific quantities related to transmission, such as transmission rate, MCS level, transmission bandwidth, etc.

[0181] The formula for calculating the transmit power of LTE's PUSCH is as follows:

[0182]

[0183] Uplink transmission power P of PUSCH PUSCH The open loop part is composed of the target received power P O_PUSCH, path loss amount PL and path loss factor α. The target receive power is divided into cell-level and UE-level parameters, both of which are determined by the base station and configured to the UE. The closed-loop part is the power adjustment amount f determined by the base station based on the difference between the measurement result and the target, and dynamically sent to the UE. TF is the MCS-related power offset, i is the subframe number, P CMAX The maximum power limit of the UE. Closed-loop adjustments are divided into two types: cumulative and absolute. The absolute method directly updates the closed-loop power adjustment using the power adjustment sent by the base station. The cumulative method adds the power adjustment sent by the base station to its historical value to determine the closed-loop power adjustment.

[0184] 5G technology introduces a beam-based transmission mode, with both base stations and UEs supporting multiple beams. When operating in beam mode, power calculations must consider the characteristics of the beams. This paper proposes a power control method for multiple beams.

[0185] The present invention uses various beam-related concepts. For ease of understanding, the following explanations are provided:

[0186] The sending mode includes at least one of the following: sending beam, sending port, sending resource, reference signal sequence, sending precoding matrix (analog, digital, hybrid mode).

[0187] The receiving mode includes at least one of the following: receiving beam, receiving port, receiving resource, reference signal sequence, receiving precoding matrix (analog, digital, hybrid mode), and receiver algorithm.

[0188] A beam can be a resource (e.g., transmitting end precoding, receiving end precoding, antenna port, antenna weight vector, antenna weight matrix, etc.). The beam number can be replaced with a resource index, as beams can be bound to certain time-frequency code resources for transmission. A beam can also be a transmission (transmission / reception) mode; these transmission modes may include spatial division multiplexing and frequency / time domain diversity.

[0189] The beam indication means that the transmitting end can indicate by using the current reference signal and antenna port, and the reference signal (or reference reference signal) and antenna port scanned by the base station or reported by the UE feedback to meet the quasi co-location (QCL) assumption.

[0190] The receive beam refers to a beam of a receiving end that does not require indication, or a beam resource of a receiving end under a quasi-co-location (QCL) indication of a reference signal (or reference signal) and an antenna port scanned by a base station or reported by a UE through a current reference signal and an antenna port;

[0191] The channel characteristics include physical propagation channel characteristics, such as horizontal transmit azimuth, vertical transmit azimuth, horizontal receive azimuth, vertical receive azimuth, etc., as well as RF and baseband circuit characteristics, such as antenna element pattern, antenna group, antenna plane, antenna subarray, transceiver unit (TXRU), receive beam set, antenna placement, and baseband time offset, frequency offset, and phase noise.

[0192] The parameters involved in the quasi-co-location (QCL) include at least Doppler spread, Doppler shift, delay spread, average delay and average gain; and may also include spatial parameter information, such as arrival angle, spatial correlation of the receiving beam, average delay, and correlation of time-frequency channel response (including phase information).

[0193] The uplink and downlink reference signal association means that the spatial parameter characteristics of the uplink (downlink) reference signal can be determined by the spatial parameter characteristics of the channel experienced by the downlink (uplink) reference signal. It is also called satisfying the QCL assumption, or satisfying the spatial reciprocity QCL assumption. Specifically, the uplink reference signal transmit beam can be determined by the receive beam corresponding to the downlink reference signal; the downlink reference signal transmit beam can be determined by the receive beam corresponding to the uplink reference signal; the uplink reference signal receive beam can be determined by the transmit beam corresponding to the downlink reference signal; the downlink reference signal receive beam can be determined by the transmit beam corresponding to the uplink reference signal.

[0194] In the embodiments of the present invention, for the convenience of description, base stations and UEs (user equipment) are used for description, but this is not intended to limit the present invention. During implementation, base stations and UEs may be replaced by the names of various communication nodes such as NB (NodeB), gNB, TRP (transmitter receiver point), AP (access point), site, user, STA, relay, and terminal.

[0195] The implementation of the technical solution is further described in detail below in conjunction with the preferred embodiments:

[0196] Preferred embodiment 1

[0197] The base station configures CSI-RS for UEs to measure downlink PL. This can be done by configuring a single DL TX beam (downlink transmit beam) to correspond to multiple RX beams (uplink receive beams), i.e., an uplink receive beam group. To account for poor reciprocity, multiple DL TX beams can also be configured to correspond to a single RX beam or RX beam group. The average PL of multiple downlinks is used as the uplink PL reference.

[0198] The link from the base station to the UE is the downlink. The UE measures the base station's reference signal to obtain RSRP (Reference Signal Received Power). The difference between the reference signal's transmit power and RSRP is the path loss (PL).

[0199] The base station is configured with M beams, corresponding to M beam IDs, and the UE is configured with N beams, corresponding to N beam IDs. Theoretically, there is a downlink and uplink between each beam on the base station and each beam on the UE. The link between the base station's beam and the UE's beam is called a beam pair link (BPL).

[0200] The UE measures the PL of each BPL and selects several BPLs with the smallest PL to report to the base station. The base station schedules downlink transmissions among these BPLs and determines the base station's transmit beam and / or the UE's receive beam.

[0201] The base station uses a specific beam to send a reference signal for the UE to receive and measure RSRP in that specific beam, thereby obtaining the PL of the BPL of the transmit and receive beams. The reference signal can be the SSS (secondary synchronization signal) in the NR-SS signal or the DMRS (demodulation reference signal) of the PBCH (primary broadcast channel), or the CSI-RS (channel state information-reference signal). When the base station measures the uplink, the pilot signal sent by the UE can be either the DMRS or the SRS (sounding reference signal).

[0202] In the uplink and downlink reciprocal scenario, the PL of each downlink BPL can be used as the PL of the uplink BPL of the same beam pair.

[0203] In multi-beam scenarios, multiple beams on the base station or UE side may have similar channel characteristics. For example, the PL values from multiple base station beams to a single UE beam are similar, or the PL values from a single base station beam to multiple UE beams vary slightly. In this case, multiple beams can be grouped together, with each group identified by a beam group ID. The PL measurement result of a beam in a group can represent the PL results of all beams in the group, or the weighted average of the PL results of multiple beams in the group can represent the PL results of all beams in the group. This approach reduces indication overhead.

[0204] When using a downlink reference signal as the PL measurement signal, the UE receives the downlink reference signal on a receive beam and obtains the PL of the BPL between the downlink reference signal's transmit beam and the UE's receive beam; or the UE selects one or more beams in a receive beam group to receive the downlink reference signal and obtains the PL of one or more BPLs. When there is only one PL, the BPL between all beams in the UE's beam group and the downlink reference signal's transmit beam is set to that PL value. When there is more than one PL, a mapping method is used to map multiple PL values to the BPL between all beams in the beam group and the downlink reference signal's transmit beam. The mapping method can be any of the following: 1. Selecting the maximum value among multiple PLs; 2. Selecting the minimum value among multiple PLs; 3. Taking the weighted average of multiple PLs. In scenarios where uplink and downlink are reciprocal, the PL corresponding to the downlink BPL can be used as the PL of the uplink BPL for the same beam pair.

[0205] When uplink and downlink reciprocity is unreliable, the PL results of multiple downlink BPLs can be used to replace the PL of a downlink BPL link to improve the problem that the PL of the downlink of a single beam pair is very different from its uplink PL.

[0206] The reference signal may be a reference signal set comprising L reference signals, wherein the transmit beam of each reference signal is a different beam of the base station, and the receive beam of each reference signal is the same beam of the UE. In this case, the transmit beam of the reference signal set comprises the beams of L base stations. The set may determine L PLs, each corresponding to the PLs of the links from the L beams of the base station to the same beam of the UE. L is an integer greater than or equal to 1.

[0207] In uplink scheduling, the UE can theoretically obtain the PL of all base station transmit beams and its own receive beam. In uplink scheduling information, the base station specifies only the UE's uplink transmit beam (or beam group) and does not specify its own receive beam (or beam group). Therefore, the UE must select an appropriate beam from a number of related beams to calculate the PL. The PL in transmit power calculations has a certain degree of uncertainty because the UE must make certain assumptions about the base station's receive beams. The UE should assume that the base station uses as its receive beam the beam or beams with the smallest uplink PL corresponding to the UE's transmit beam.

[0208] Alternatively, the base station only indicates the base station's receive beam (group) to the UE in the uplink scheduling information, and the UE selects the transmit beam (group) on its own. In this case, the selection of PL in the transmit power calculation is more reliable.

[0209] Alternatively, the base station specifies transmit and receive beams (groups) for the UE in the uplink scheduling information. The UE then uses the specified transmit beams (groups) to send uplink information. The selection of PL in the transmit power calculation also requires no assumptions, making it more reliable.

[0210] In the above three cases, as long as the UE does not change the transmit beam, the base station will send an indication based on the quality of the received signal to adjust the power adjustment amount of the UE's transmit beam, and the inaccuracy of the PL can also be compensated.

[0211] In the three cases above, when the hypothetical or actual base station uses multiple receive beams, the PL is calculated using the combined PL value of the PLs of the beam pairs between the UE's transmit beam and the base station's multiple beams as the transmit power PL for that UE's transmit beam. When the number of UE transmit beams indicated by the base station is greater than one, the above operation is performed for each UE's transmit beam, along with the hypothetical base station's receive beam. The PL between each UE's transmit beam and the hypothetical base station's receive beam is then calculated to determine a combined PL value. Determining a combined PL value from multiple PLs can be done in one of the following ways: 1. Taking the minimum value among the multiple PLs; 2. Taking the weighted average of the multiple PLs.

[0212] Figure 4 This is an optional beam correspondence diagram between a base station and a terminal in embodiment 3 of the present invention. Figure 4 As shown, the M beams of the base station are denoted as NB_Beam#1 to NB_Beam#M, and the N beams of the UE are denoted as UE_Beam#1 and UE_Beam#N.

[0213] When the base station transmits a downlink reference signal on NB_Beam#1, the UE receives the downlink reference signal on different receive beams and calculates the PL of the corresponding BPL, such as iePL_ BPL11 is the PL of the link between NB_Beam#1 and UE_Beam#1, and PL_ BPL12 is the PL of the link between NB_Beam#1 and UE_Beam#2. And so on. Assume:

[0214] PL_ BPL11 =50dB, PL_ BPL21 =65dB, PL_ BPL31 =60dB

[0215] PL_BPL12 =72dB, PL_ BPL2 =80dB, PL_ BPL32 =63dB

[0216] PL_ BPL13 =53dB, PL_ BPL23 =58dB, PL_ BPL33 =75dB

[0217] If the TX / RS beam correspondence is established on the UE side, and the UE knows that the uplink transmission of PUSCH / PUCCH / SRS uses UE_Beam#2 for transmission and NB_Beam#1 for reception, the downlink PL can be used for the uplink PL. BPL12 Calculate the transmit power.

[0218] If the indication information of the base station only indicates the receiving beam of the uplink transmission, the UE can determine the uplink transmitting beam by itself, which is equivalent to that both the transmitting and receiving beams of the uplink transmission are determined.

[0219] If the reciprocity of the transmit and receive beams on the UE side holds, and the base station's uplink resource indication only specifies the transmit beam UE_Beam#3 for uplink transmission, but the receive beam is uncertain, the UE assumes that the receive beam selected by the base station is one or more transmit beams that best matches the specified uplink transmit beam. The best match is the minimum PL of the corresponding uplink link. Because reciprocity holds, the best match also means the minimum PL of the corresponding downlink link. For the above PL values, the ones that best match UE_Beam#3 are NB_Beam#1, NB_Beam#2, and NB_Beam#3, respectively. Due to PL_ BPL33 =75dB path loss is relatively large and therefore may not be considered. In practical systems, a path loss threshold can be set; paths exceeding this threshold are excluded from uplink PL calculations. Assuming the path loss threshold is 65dB in this example, the UE assumes that the base station may use NB_Beam#1 and / or NB_Beam#2 as receive beams. The PL of the downlink beam pair link between the UE's transmit beam and the possible base station receive beams (sets) is used to calculate the uplink PL.

[0220] The reciprocity of transmit and receive beams on the UE side is not completely established. That is, the optimal downlink transmit and receive beam pair determined by the UE based on the downlink measurement results and the optimal uplink transmit and receive beams measured by the base station do not correspond to the same beam pair between the base station and UE. However, the downlink PL measurement value of the optimal uplink beam pair does not exceed the specific threshold. This shows that the downlink and uplink measurement results are not completely reciprocal for beam pair selection. However, the PL measured by the downlink beam pair still has reference value for the PL of the same uplink beam pair.

[0221] If the reciprocity of the transmit and receive beams on the UE side is not completely established, and the uplink resource indication of the base station indicates the transmit beam UE_Beam#3 for uplink transmission and the receive beam NB_Beam#1, the UE uses PL_ BPL13 =53dB to calculate the transmit power. Or use PL_ BPL13 = 53dB and an offset value, where the offset value is specified by the base station. Alternatively, the UE selects the base station beam (or set) corresponding to the downlink reference signal for which the downlink reference signal for NB_Beam#1 satisfies certain channel characteristic assumptions. The PL of the uplink transmission is calculated using the PL of the beam pair (or set) of the selected base station beam (or set) and the UE's beam UE_Beam#3.

[0222] If reciprocity between transmit and receive beams on the UE side is not fully established, and the base station's uplink resource indication indicates the uplink transmit beam, but the receive beam is unknown, the UE assumes the base station's receive beam (set) based on the transmit beam. The PL of the downlink beam pair link between the UE's transmit beam and the possible base station's receive beam (set) is used to calculate the uplink PL.

[0223] If reciprocity is completely violated, the UE can determine the transmit and receive beams for uplink transmissions, requiring the base station to indicate the corresponding measured uplink PL. The base station updates the PL of the active beam pair as needed and makes corrections based on the closed-loop power adjustment strategy. Alternatively, the UE uses a predefined PL value, with the base station sending closed-loop power control adjustments for correction. Alternatively, the base station directly calculates the required uplink transmit power and indicates it to the UE. Alternatively, the base station directly indicates the transmit power to the UE only for the first transmission, and for subsequent transmissions, the UE only sends relative adjustment instructions for modification.

[0224] If reciprocity does not hold at all, the UE can determine the transmit beam for uplink transmission, but the receive beam is unknown. In this case, the UE uses a predefined PL value, and the base station sends a closed-loop power control adjustment value for correction. Alternatively, the base station directly calculates the required uplink transmit power and indicates it to the UE. Alternatively, the base station directly indicates the transmit power to the UE only for the first transmission, and for subsequent transmissions, the UE only sends a relative adjustment value instruction for modification.

[0225] When there are multiple uplink transmission beams, the transmit power can be determined for each transmit beam according to the above method. The sum of the transmit powers of all transmit beams is then determined to see whether it exceeds the maximum power limit of the UE. If so, one of the following actions is taken:

[0226] Method 1: Proportionally reduce the power required for all transmit beams so that the total power does not exceed the maximum power limit;

[0227] Method 2: Prioritize transmission for beams with smaller required transmission power, and reduce transmission power for beams with larger required transmission power.

[0228] For example, if the UE's required transmit powers for beams 1, 2, and 3 are 100mW, 50mW, and 200mW, respectively, and the UE's maximum power limit is 300mW, then using method 1, all beams are scaled down proportionally, with a scaling factor of 300 / (100+50+200)=0.857. If using method 2, beams 2 and 1 are prioritized, and the remaining power is 150mW, beam 3 is transmitted using 150mW, equivalent to reducing beam 3's transmit power by a factor of 0.75.

[0229] In the above description, when multiple PL values are used for transmit power calculation, a composite PL value needs to be determined. This determination is performed using one of the following methods: 1. Selecting the maximum value among the multiple PL values; 2. Selecting the minimum value among the multiple PL values; 3. Calculating a weighted average of the multiple PL values. This composite PL value is set as the uplink PL value of all BPLs between the corresponding UE-side beam (group) and the base station's beam (group), and is directly used for transmit power calculation.

[0230] Finally, the UE side can obtain the uplink and downlink PL values of all beam pairs between the base station and the UE.

[0231] In practice, considering resource consumption, the UE may not maintain the PL values of all beam pairs. For excessively large PL values, since the beams involved are not practically useful, the UE may not allocate dedicated resources for maintenance, or may allocate resources but record an invalid value.

[0232] In summary, the UE side maintains the PL value for uplink power calculation for all or part of the beam pairs between the base station and the UE.

[0233] The base station schedules the UE to transmit SRS, measures the SRS, and calculates the uplink PL. The base station can feed back the PL of all or part of the uplink beam pairs to the UE. The UE then corrects the PL of the corresponding uplink beam pair.

[0234] When uplink transmission occurs between a UE and multiple TRPs or gNBs, the UE must consider the differences among multiple reception points when calculating transmit power. The transmit power selected by the UE must ensure successful demodulation at all reception points.

[0235] The UE calculates the transmission power required for transmission to multiple receiving points respectively, and takes the maximum transmission power value as the transmission power for transmission.

[0236] Preferred embodiment 2

[0237] The base station can use the characteristics of the reference signal to indicate part of the uplink scheduling information. For example, the transmission beam indicated in the uplink scheduling information can be the same as the transmission beam of one or several uplink reference signals previously sent by the UE; the reception beam of the uplink scheduling information can be the same as the transmission beam of one or several downlink reference signals previously sent by the base station.

[0238] The reference signal used by the base station to indicate uplink scheduling information is the second reference signal, and the downlink reference signal used to measure the PL of the downlink is the first reference signal.

[0239] The first reference signal includes at least one of the following: CSI-RS, SSS, DMRS of PBCH;

[0240] The second reference signal includes at least one of the following: CSI-RS, SRS, SSS, and DMRS of PBCH.

[0241] The DMRS of CSI-RS / SSS / PBCH is a downlink reference signal, and SRS is an uplink reference signal.

[0242] When the first reference signal is a downlink reference signal and the second reference signal is also a downlink reference signal, the second reference signal is a subset of the first reference signal or includes all first reference signals. For example, the base station has a total of five CSI-RSs, corresponding to five transmit beams. The second reference signal only includes one specific CSI-RS, which can be used to determine one transmit beam of the base station.

[0243] The second reference signal may include resource indication information of a downlink reference signal and / or an uplink reference signal. The following description will be made by taking the downlink reference signal as CSI-RS and the uplink reference signal as SRS as an example.

[0244] The base station may specify the transmit beam (or group) for uplink transmission for the UE in scheduling information by sending an SRS resource indication. The SRS resource indication may use an index value to identify one or more SRS resources from a set of SRS resources known to both the base station and the UE. The transmit beam used by the SRS in the corresponding SRS resource is used to determine the transmit beam (or group) used for the UE's uplink transmission.

[0245] The base station may specify the receive beam (group) for uplink transmission for the UE in the scheduling information by sending a CSI-RS resource indication. The CSI-RS resource indication may use an index value to identify one or more CSI-RS resource sets known to both the base station and the UE. The transmit beam used by the CSI-RS in the corresponding CSI-RS resource is used to determine the receive beam (group) when the UE's uplink transmission is received on the base station side.

[0246] The base station may include a CSI-RS resource indication and / or an SRS resource indication in the scheduling information, which correspond to the receiving beam (group) and / or transmitting beam (group) of uplink transmission respectively.

[0247] When the base station only indicates the transmission mode of uplink transmission to the UE, the UE assumes the receiving beam (group) of the base station based on the transmitting beam (group), and calculates the PL of uplink transmission from one or more downlink PLs based on the assumption.

[0248] When the base station only indicates the uplink transmission receiving beam (group) to the UE, the UE selects the optimal transmitting beam (group) according to the receiving beam (group) and calculates the uplink transmission PL from one or more downlink PLs based on the determined receiving and transmitting beam conditions.

[0249] The base station may also not include the uplink transmission or reception beam (group) in the uplink transmission scheduling information. In this case, the UE determines the uplink transmission and / or reception mode according to a predefined method. For example, the base station uses the transmission beam corresponding to the transmission mode of the control information containing the scheduling information as the uplink transmission beam, and the UE uses the reception beam corresponding to the reception mode of the control information containing the scheduling information as the uplink transmission beam.

[0250] Preferred embodiment 3

[0251] The UE determines the sending mode of uplink transmission according to the resource indication of the second reference signal sent by the base station, including sending a beam or a beam group.

[0252] Alternatively, the UE determines the transmission mode and reception mode of the uplink transmission, or a beam-pair link (BPL), or a beam-pair link group (BPL group) based on the resource indication of the second reference signal sent by the base station. A beam-pair link group refers to multiple BPLs, such as a downlink receive beam set (DLRx beam set) or a link between a UE antenna group (UE antenna group) and a downlink transmit beam.

[0253] The UE maintains power adjustment values for its beam (group) or BPL (group). Different channels (signals), such as PUSCH, PUCCH, and SRS, each have different power adjustment values. PUSCH and SRS can also share power adjustment values. Therefore, the UE determines power adjustment values for different signals (signals) within the beam (group) or BPL (group). PUSCH and PUCCH are channels, while SRS is a signal.

[0254] Alternatively, the UE may determine power adjustment values for different signals in only some beams (groups) or BPLs (groups). These beams (groups) or BPLs (groups) are active beams (groups) or BPLs (groups). Active means the base station continuously sends commands to update the power adjustment values for the links participating in the beam (group) or the links in the BPL (group).

[0255] The power adjustment value is the power adjustment value recorded locally by the UE. Upon receiving the power adjustment information from the base station, the UE adjusts the power adjustment value corresponding to the beam (group) or BPL (group) specified in the power adjustment information. The power adjustment value supports both cumulative adjustment and direct configuration. The cumulative adjustment method refers to the UE updating the locally stored value by adding it to the locally stored value after receiving the power adjustment information from the base station. The direct configuration method directly replaces the locally stored value with the base station's power adjustment value.

[0256] The power adjustment value has a validity period. If it is not updated within a predetermined time, it expires and becomes invalid. The predetermined time is the time configured by the base station for the UE. It can be the number of slots, the number of OFDM symbols, or the number of microseconds, milliseconds, or seconds.

[0257] When the UE needs to send an uplink transmission and when a beam (group) with a valid power adjustment amount is used for transmission, the transmission power is calculated using the power adjustment amount of the beam (group) and the PL of the beam.

[0258] When a UE uses a beam (group) whose power adjustment value does not exist or has expired as a transmit beam for transmission, it can refer to the non-expired power adjustment value in other beams (groups) of the UE. When the number of beams (groups) or BPL (groups) that meet the conditions is greater than 1, multiple reference power adjustment values are used to jointly determine a comprehensive power adjustment value; when the number of beams (groups) or BPL (groups) that meet the conditions is 0, a power adjustment value of 0 is used, or a predefined value is used. The specific method for jointly determining a power adjustment value using more than 1 reference value is one of the following: 1. Select the maximum value among multiple reference values; 2. Select the minimum value among multiple reference values; 3. Calculate the weighted average of multiple reference values. For example, the UE has 3 beams, denoted as Beam_1, Beam_2, and Beam_3. The UE measures and records the PL values for Beam_1 and Beam_2.

[0259] The UE records the power adjustment values for Beam_1, Beam_2, and Beam3, f_Beam_1, f_Beam_2, and f_Beam_3, all of which are initially set to 0.

[0260] The base station only sends the power adjustment value for Beam_1 of the UE for continuous update. When the UE receives the power adjustment value information for Beam_1 from the base station, the UE updates f_Beam_1.

[0261] When the UE decides to use Beam_2 to send uplink transmission, the UE finds that Beam_2 has no valid transmit power adjustment value, while the transmit power adjustment value of Beam_1 is valid. In this case, the UE uses the transmit power adjustment value f_Beam_1 of Beam_1 to calculate the transmit power of Beam_2 for uplink transmission.

[0262] The beam (group) mentioned in the present invention refers to a beam, or a beam group.

[0263] The concept of beam group can be interchanged with beam set or antenna group (UE antenna group).

[0264] Preferred embodiment 4

[0265] The UE detects beam failure and sends a beam failure recovery request at a first power.

[0266] The beam failure recovery request may also be called a beam recovery request, which is used to request the base station to allocate resources for beam training and find an available beam when the existing beam performance is below a threshold.

[0267] When the beam failure recovery request is sent, if the UE does not detect a response from the base station in one or more PDCCH search spaces, the UE retransmits the beam failure recovery request at the second power. Or,

[0268] When a beam failure recovery request is sent, if the UE does not detect a response from the base station side in one or more PDCCH search spaces, and determines that retransmission will not exceed the maximum number of transmissions and / or the cumulative duration does not exceed the timing threshold, the UE retransmits the beam failure recovery request at the second power.

[0269] If it is determined that the number of transmissions has reached the maximum number of transmissions and / or the accumulated duration has reached or exceeded the timing threshold, the UE needs to notify the higher layer of this event.

[0270] Determination of the first power:

[0271] The UE calculates the first power using the PL corresponding to the selected beam (set) or BPL (group) and the power adjustment amount.

[0272] If the beam (set) or BPL (group) selected by the UE does not maintain the power adjustment value or has expired, the power adjustment value of other beams or BPLs that have been updated most recently is selected.

[0273] Alternatively, the power adjustment amount used for the initial transmission may be a predefined power adjustment amount value, and the initialization value is directly configured.

[0274] Alternatively, a power adjustment of 0 is used for the initial transmission.

[0275] Determination of the second power:

[0276] The second power is the transmit power of the previous transmission beam failure recovery request plus the power ramp value, provided that the maximum transmit power is not exceeded. This is shown in the following formula:

[0277] P=min{P CMAX ,P_ LastTX +deltaP_ rampup}[dBm]

[0278] Among them, P CMAX The maximum transmit power that a UE can use when sending a beam failure recovery request in the current serving cell using the current beam (set). The current serving cell refers to the component carrier used by the UE to send the beam failure recovery request. This value is configured by the base station for each component carrier, or separately for each component carrier in each UE antenna group. A UE antenna group refers to a UE antenna panel or subarray.

[0279] The power rise value deltaP_ rampup Is directly accepted configuration or the power climb value deltaP_ rampup The UE determines this in the following way:

[0280] deltaP_ rampup =max{deltaP_ rampup _0,(P CMAX –P_ first ) / (M_ trans -1)}

[0281] Among them, deltaP_ rampup _0s is the default power ramp value, which can be independently configured by the base station or predefined to be the same as the preamble power ramp value of the random access process. CMAX It is the maximum transmit power that the UE can use to send a beam failure recovery request using the current beam (set) in the current serving cell. first is the first transmission power. trans It is the maximum number of transmission times of beam failure recovery request, which is directly accepted by the configuration.

[0282] The relationship between the beam used for retransmission and the previous transmission is one of the following:

[0283] 1. The retransmission uses the same transmit and receive beams (sets) as the previous transmission.

[0284] 2. The retransmission uses the same transmission beam (set) as the previous transmission.

[0285] 3. The retransmission uses a different transmission beam (set) from the previous transmission.

[0286] The transmit power adjustment amount of the beam failure recovery request can be shared with the transmit power adjustment amount of the PUSCH channel. Or,

[0287] The transmit power adjustment amount of the beam failure recovery request may be determined independently of the transmit power adjustment amount of the PUSCH channel.

[0288] Preferred embodiment 5

[0289] When the UE performs uplink beam training or beam scanning, one or more SRS resources meet the channel characteristic assumption, or the SRS antenna ports indicated by the same downlink reference signal index are used under reciprocity conditions and the same transmit power is used, where the channel characteristic assumption includes one of the following: QCL assumption, spatial QCL assumption, and reciprocal QCL assumption.

[0290] During beam training, the group power is set using the beam's current PL and power adjustment.

[0291] The ports in this article also refer to antenna ports, and they have the same meaning and can be interchanged.

[0292] If there are multiple groups of SRS ports in the UE, the resources of the SRS ports in each group use the same transmit power, and the transmit powers between the groups are determined independently.

[0293] The relationship between SRS ports, SRS resources, and SRS transmit beams is as follows:

[0294] For a UE, there may be at least one SRS resource;

[0295] Each SRS resource contains at least one SRS transmit beam;

[0296] Each SRS transmit beam corresponds to at least one SRS port.

[0297] Method for independently determining the power of a group of SRS antenna ports using the same transmit power:

[0298] If beams or BPLs in the beam group have valid power adjustment values, the transmit power of these beams or BPLs is calculated using the power adjustment values of these beams or BPLs and the corresponding power levels. A valid power adjustment value for a beam or BPL means that the UE has maintained the power adjustment value for the corresponding beam or BPL and it has not expired. The transmit power of the beam group is determined by taking the smallest X transmit powers. X is a predetermined or configurable positive integer. This determination can be performed using one of the following methods: 1. Taking the smallest of the X transmit powers; 2. Taking the largest of the X transmit powers; 3. Taking the weighted average of the X transmit powers.

[0299] If no beams or BPLs in the beam group have valid power adjustment values, but some beams or BPLs have valid power adjustment values, and beams in other groups have valid power adjustment values, the power adjustment values of the other groups are referenced for the power adjustment values of the beams in this group and used together with the power adjustment values of the corresponding beams or BPLs to calculate the transmit power. A valid power adjustment value is a value less than a certain threshold and cannot exceed the validity period. The transmit power of the beam is then determined by taking the smallest X transmit powers according to the above method. Specifically, the reference method can be one of the following: 1. Taking the smallest value among the referenced power adjustment values; 2. Taking the largest value among the referenced power adjustment values; 3. Taking the average of the referenced power adjustment values.

[0300] If all beams or BPLs in the beam group have no valid power adjustment amount, and no beam or BPL has a valid PL, the maximum value of the transmit power of other beam groups is set as the transmit power of this group of beams.

[0301] If a UE has multiple beam groups, the beams in each group use the same transmit power, with a power offset between groups. The inter-group power offset is determined by the UE based on historical statistics or configured directly. The baseline transmit power is calculated using the PL and power adjustment value of the beam (group) with the most recently maintained power adjustment value. The transmit power of each additional group is calculated based on the offset value relative to that beam (group) plus the baseline value.

[0302] If the UE determines the offset value based on historical statistical information, the UE needs to notify the base station of the offset value.

[0303] Example 4

[0304] The embodiment of the present invention further provides a storage medium. Optionally, in the embodiment of the present invention, the storage medium can be used to store the program code executed by the method for determining the transmit power provided in the first embodiment.

[0305] Optionally, in an embodiment of the present invention, the above-mentioned storage medium may be located in any computer terminal in a computer terminal group in a computer network, or in any mobile terminal in a mobile terminal group.

[0306] Optionally, in an embodiment of the present invention, the storage medium is configured to store program codes for executing the following steps:

[0307] S1. The terminal measures a first reference signal sent by a base station to determine a path loss of the first reference signal.

[0308] S2, the terminal determines, according to an instruction of the base station, a type of uplink transmission and an association relationship between the uplink transmission and the first reference signal, and determines, according to the association relationship, a path loss of the uplink transmission from a path loss of the first reference signal;

[0309] S3, the terminal determines the power adjustment amount of the uplink transmission according to the instruction of the base station;

[0310] S4. The terminal determines the transmit power of the uplink transmission according to at least one of the following: the path loss of the uplink transmission, and the power adjustment amount of the uplink transmission.

[0311] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0312] In the above embodiments of the present invention, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0313] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0314] The units described as separate components may or may not be physically separate, and 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 these units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.

[0315] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0316] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk, etc. Various media that can store program codes.

[0317] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A method for determining transmission power, characterized in that: include: The communication device determines a sending mode of uplink transmission according to the first reference signal resource indication information, wherein the sending mode of uplink transmission includes sending a precoding matrix, The first reference signal includes a sounding reference signal. The first reference signal resource includes a time domain resource, a frequency domain resource or a transmission mode of the first reference signal transmission. The first reference signal resource indication information is used to determine Y first reference signal resources from X first reference signal resources, where X is an integer greater than or equal to 1, Y is an integer greater than or equal to 1, and Y is less than X; The communication device determines the path loss of the uplink transmission from the path loss of the second reference signal according to the association relationship between the uplink transmission and the second reference signal, The association relationship between the uplink transmission and the second reference signal is determined according to an instruction from a base station, and The second reference signal includes a channel state information reference signal or a secondary synchronization signal; and The transmit power of the uplink transmission is determined based on the path loss of the uplink transmission.

2. The method according to claim 1, characterized in that The second reference signal is used to determine the transmit power of uplink transmission.

3. A device for determining transmission power, characterized in that: include: at least one processor configured to: Determining a sending mode for uplink transmission according to the first reference signal resource indication information, wherein the sending mode for uplink transmission includes sending a precoding matrix, The first reference signal includes a sounding reference signal. The first reference signal resource includes a time domain resource, a frequency domain resource or a transmission mode of the first reference signal transmission. The first reference signal resource indication information is used to determine Y first reference signal resources from X first reference signal resources, where X is an integer greater than or equal to 1, Y is an integer greater than or equal to 1, and Y is less than X; According to the association relationship between the uplink transmission and the second reference signal, the path loss of the uplink transmission is determined by the path loss of the second reference signal, The association relationship between the uplink transmission and the second reference signal is determined according to an instruction from a base station, and The second reference signal includes a channel state information reference signal or a secondary synchronization signal; and The transmit power of the uplink transmission is determined based on the path loss of the uplink transmission.

4. The device according to claim 3, characterized in that The second reference signal is used to determine the transmit power of uplink transmission.

5. The device according to claim 3, characterized in that The apparatus includes a wireless terminal.

6. A non-transitory storage medium storing a computer program, characterized in that: The computer program, when executed, causes one or more processors of a communication device to: Determining a sending mode for uplink transmission according to the first reference signal resource indication information, wherein the sending mode for uplink transmission includes sending a precoding matrix, The first reference signal includes a sounding reference signal. The first reference signal resource includes a time domain resource, a frequency domain resource or a transmission mode of the first reference signal transmission. The first reference signal resource indication information is used to determine Y first reference signal resources from X first reference signal resources, where X is an integer greater than or equal to 1, Y is an integer greater than or equal to 1, and Y is less than X; According to the association relationship between the uplink transmission and the second reference signal, the path loss of the uplink transmission is determined by the path loss of the second reference signal, The association relationship between the uplink transmission and the second reference signal is determined according to an instruction from a base station, and The second reference signal includes a channel state information reference signal or a secondary synchronization signal; and The transmit power of the uplink transmission is determined based on the path loss of the uplink transmission.

7. The non-transitory storage medium according to claim 6, wherein: The second reference signal is used to determine the transmit power of uplink transmission.

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