WO2019192336A1 - Power control method, apparatus, and system - Google Patents

Abstract

The present application provides a power control method, apparatus, and system. The method comprises: with regard to one synchronization signal block (SSB) of a plurality of SSBs, a network device sends, for a terminal, an initial target receive power configuration corresponding to said SSB. The terminal determines, according to the initial target receive power configuration corresponding to the SSB, an initial target receive power corresponding to the SSB, and determines, according to the downlink measurement quantity corresponding to the SSB and the initial target receive power, a transmit power of a physical random access channel (PRACH), and transmits said PRACH at said transmit power by means of an SUL carrier. The described method increases the access success rate or reduces terminal power consumption during the process of access.

Description

Power control method, device and system

The present application claims priority to Chinese Patent Application No. 20181 029 357, the entire disclosure of which is hereby incorporated by reference in its entirety in its entirety in its entirety in in.

Technical field

The present application relates to the field of communications technologies, and in particular, to a power control method, apparatus, and system.

Background technique

In wireless communication systems, in order to reduce interference between different data, a power control method is proposed. For example, when the network device and the terminal perform uplink communication, in order to reduce interference between uplink data sent by different terminals to the network device, power control may be performed on uplink channels of different terminals, for example, an uplink channel that can be sent by different terminals. The received power on the network device side is approximately equal. The power control method can reduce the interference between different data, so as to ensure the correct receiving rate of each data. Therefore, how to improve the efficiency of power control is worth studying.

Summary of the invention

The present application provides a power control method, apparatus, and system, which are intended to improve the success rate when a terminal accesses a network device, or save power consumption of the terminal during the access process.

In a first aspect, the present application provides a power control method, including: receiving, for one SSB of a plurality of synchronization signal blocks SSB, an initial target received power configuration corresponding to the one SSB, wherein the one The initial target received power corresponding to the SSB is configured to determine an initial target received power corresponding to the one SSB, and the downlink measured quantity and the initial target received power corresponding to the one SSB are used to determine a physical random access channel (PRACH) transmitted on the SUL carrier. Transmit power. With this method, the success rate of the terminal when accessing the network device can be improved, or the power consumption of the terminal can be reduced by enabling the terminal to access the network device with a reasonable transmit power.

In a possible implementation, the initial target received power configuration corresponding to the one SSB includes: an initial target received power corresponding to the one SSB, or an initial target received power offset corresponding to the one SSB, where the The initial target received power offset corresponding to one SSB is the offset of the initial target received power corresponding to the one SSB from the carrier-level initial target received power. With this method, signaling carrying the initial target received power configuration can be flexibly designed according to the requirements of the network for signaling overhead.

In a possible implementation, an initial target received power configuration corresponding to the one SSB corresponds to the SUL carrier, and the SUL carrier is included in multiple SUL carriers. With this method, in a multi-SUL carrier scenario, the success rate when the terminal accesses the network device can be improved, or the terminal can reduce the power consumption of the terminal by using the reasonable transmit power to access the network device. .

In a second aspect, the present application provides a power control method, including: transmitting, for one SSB of a plurality of synchronization signal blocks SSB, an initial target received power configuration corresponding to the one SSB, where the one The initial target received power corresponding to the SSB is configured to determine an initial target received power corresponding to the one SSB, and the downlink measured quantity and the initial target received power corresponding to the one SSB are used to determine a physical random access channel (PRACH) transmitted on the SUL carrier. Transmit power.

In a possible implementation, the description of the initial target received power configuration corresponding to the one SSB is the same as that in the first aspect, and details are not described herein again.

In a third aspect, the present application provides an apparatus, where the apparatus includes a communication module, configured to receive an initial target received power configuration corresponding to the one SSB for one SSB of the plurality of synchronization signal blocks SSB, where The initial target received power corresponding to the one SSB is configured to determine an initial target received power corresponding to the one SSB, and the downlink measured quantity and the initial target received power corresponding to the one SSB are used to determine a physical random connection in the SUL carrier transmission. The transmit power of the incoming channel PRACH.

In a possible implementation, the apparatus further includes a processing module, configured to determine an initial target received power corresponding to the one SSB according to an initial target received power configuration corresponding to the one SSB, according to the one The downlink measurement amount corresponding to the SSB and the initial target reception power determine the transmission power of the PRACH transmitted on the SUL carrier.

In a possible implementation, the description of the initial target received power configuration corresponding to the one SSB is the same as that in the first aspect, and details are not described herein again.

In a fourth aspect, the present application provides an apparatus, where the apparatus includes a communication module, configured to send an initial target received power configuration corresponding to the one SSB to one SSB of the plurality of synchronization signal blocks SSB, where The initial target received power corresponding to the one SSB is configured to determine an initial target received power corresponding to the one SSB, and the downlink measured quantity and the initial target received power corresponding to the one SSB are used to determine a physical random connection in the SUL carrier transmission. The transmit power of the incoming channel PRACH.

In a possible implementation, the apparatus further includes a processing module, configured to generate an initial target received power configuration corresponding to the one SSB.

In a possible implementation, the description of the initial target received power configuration corresponding to the one SSB is the same as that in the first aspect, and details are not described herein again.

In a fifth aspect, the present application provides an apparatus that is capable of implementing one or more of the first aspect and various possible implementations of the first aspect. This function can be implemented in the form of hardware, software or hardware plus software. The hardware or software includes one or more modules corresponding to the functions described above. In one example, the apparatus includes a processor, a memory, and a communication interface. Wherein the memory is coupled to the processor, the processor executes instructions stored in the memory; the processor is coupled to the communication interface, and the processor transmits and/or receives signals via the communication interface. In another example, the apparatus includes a processor and a memory. Therein, the memory is coupled to a processor that executes instructions stored in the memory; the processor generates and transmits signals, and/or receives and processes signals.

In a possible implementation, for one SSB of the plurality of synchronization signal blocks SSB, the processor is configured to receive and process an initial target received power configuration corresponding to the one SSB, where the initial target received power corresponding to the one SSB And configured to determine an initial target received power corresponding to the one SSB, where the downlink measurement amount and the initial target received power corresponding to the one SSB are used to determine a transmit power of a physical random access channel PRACH transmitted on the SUL carrier.

In a possible implementation, the processor is further configured to determine, according to an initial target received power configuration corresponding to the one SSB, an initial target received power corresponding to the one SSB, according to a downlink measurement quantity corresponding to the one SSB. The initial target received power determines the transmit power of the PRACH transmitted on the SUL carrier.

In a possible implementation, the description of the initial target received power configuration corresponding to the one SSB is the same as that in the first aspect, and details are not described herein again.

In a sixth aspect, the present application provides an apparatus capable of implementing one or more of the second aspect and the possible implementations of the second aspect. This function can be implemented in the form of hardware, software or hardware plus software. The hardware or software includes one or more modules corresponding to the functions described above. In one example, the apparatus includes a processor, a memory, and a communication interface. Wherein the memory is coupled to the processor, the processor executes instructions stored in the memory; the processor is coupled to the communication interface, and the processor transmits and/or receives signals via the communication interface. In another example, the apparatus includes a processor and a memory. Therein, the memory is coupled to a processor that executes instructions stored in the memory; the processor generates and transmits signals, and/or receives and processes signals.

In a possible implementation, for one SSB of the plurality of synchronization signal blocks SSB, the processor is configured to generate and send an initial target received power configuration corresponding to the one SSB, where the initial target received power corresponding to the one SSB And configured to determine an initial target received power corresponding to the one SSB, where the downlink measurement amount and the initial target received power corresponding to the one SSB are used to determine a transmit power of a physical random access channel PRACH transmitted on the SUL carrier.

In a possible implementation, the description of the initial target received power configuration corresponding to the one SSB is the same as that in the first aspect, and details are not described herein again.

In a seventh aspect, the present application provides a computer program product comprising instructions which, when executed on a computer, cause the computer to perform one or more of the first aspect and the various possible implementations of the first aspect.

In an eighth aspect, the present application provides a computer program product comprising instructions which, when executed on a computer, cause the computer to perform one or more of the second aspect and the possible implementations of the second aspect.

In a ninth aspect, the present application provides a computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform one or more of the first aspect and various possible implementations of the first aspect.

In a tenth aspect, the present application provides a computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform one or more of the second aspect and various possible implementations of the second aspect.

In an eleventh aspect, the embodiment of the present application provides a chip system, including a processor, and a memory, for implementing one or more of the first aspect and each possible implementation of the first aspect.

In a twelfth aspect, the embodiment of the present application provides a chip system including a processor, and may further include a memory for implementing one or more of the second aspect and each possible implementation of the second aspect.

In a thirteenth aspect, the present application provides a communication system comprising the apparatus of any of the third or third possible implementations, and any of the possible implementations of the fourth or fourth aspect The device described.

In a fourteenth aspect, the present application provides a communication system comprising the apparatus of any of the fifth or fifth possible implementations, and any of the possible implementations of the sixth or sixth aspect The device described.

DRAWINGS

1 is a diagram showing an example of a process for a UE to access a base station according to an embodiment of the present application;

2 is a schematic diagram of an LTE-NR co-site deployment scenario provided by an embodiment of the present application;

3 is a diagram showing an example of a power control method provided by an embodiment of the present application;

4 is a diagram showing an example of a cell provided by an embodiment of the present application;

5 is a diagram showing an example of a process for a UE to access a base station according to an embodiment of the present application;

6 is a diagram showing an example of the structure of an apparatus provided by an embodiment of the present application;

7 is a diagram showing an example of the structure of an apparatus provided by an embodiment of the present application;

8 is a diagram showing an example of the structure of an apparatus provided by an embodiment of the present application;

FIG. 9 is a diagram showing an example of the structure of an apparatus provided by an embodiment of the present application.

detailed description

The technical solutions provided by the embodiments of the present application can be applied to various communication systems. Illustratively, the technical solution provided by the embodiments of the present application may be applied to a communication system supporting multiple beams or a communication system supporting supplementary uplink frequency (SUL), for example, may be applied to: fifth generation mobile communication (the fifth Generation, 5G) systems, long term evolution (LTE) systems and future communication systems. Among them, 5G can also be called new radio (NR). In the embodiment of the present application, NR and LTE are taken as an example for description, which does not constitute a limitation of the application scenario of the technical solution provided by the embodiment of the present application.

The technical solution provided by the embodiment of the present application can be applied to wireless communication between communication devices. The communication device may include a network device and a terminal device, and the network device may also be referred to as a network side device. The wireless communication between the communication devices may include wireless communication between the network device and the terminal device, wireless communication between the network device and the network device, and wireless communication between the terminal device and the terminal device. In the embodiment of the present application, the term "wireless communication" may also be simply referred to as "communication", and the term "communication" may also be described as "data transmission", "signal transmission", "information transmission" or "transmission" and the like.

The terminal device in the embodiment of the present application may also be referred to as a terminal, and may be a device having a wireless transceiver function, which may be deployed on land, including indoor or outdoor, handheld or on-board, or may be deployed on the water surface (eg, Ships, etc.); can also be deployed in the air (such as airplanes, balloons, satellites, etc.). The terminal device may be a user equipment (UE). The UE includes a handheld device, an in-vehicle device, a wearable device, or a computing device having a wireless communication function. Illustratively, the UE can be a mobile phone, a tablet, or a computer with wireless transceiving capabilities. The terminal device may also be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in an unmanned vehicle, a wireless terminal in telemedicine, and an intelligent device. A wireless terminal in a power grid, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like. In the embodiment of the present application, the device for implementing the function of the terminal may be a terminal, or may be a device capable of supporting the terminal to implement the function, such as a chip system. In the embodiment of the present application, the device that implements the function of the terminal is a terminal, and the terminal is a UE as an example, and the technical solution provided by the embodiment of the present application is described.

The network device involved in the embodiment of the present application includes a base station (BS), and may be a device deployed in the radio access network to perform wireless communication with the terminal. The base station may have various forms, such as a macro base station, a micro base station, a relay station, and an access point. For example, the base station in the embodiment of the present application may be a base station in the 5G or a base station in the LTE, where the base station in the 5G may also be referred to as a transmission reception point (TRP) or a gNB. In the embodiment of the present application, the device for implementing the function of the network device may be a network device, or may be a device capable of supporting the network device to implement the function, such as a chip system. In the embodiment of the present application, the device that implements the function of the network device is a network device, and the network device is a base station as an example, and the technical solution provided by the embodiment of the present application is described.

In a wireless communication system, a base station can manage at least one cell, and one cell can include an integer number of UEs, and the base station and the UE can communicate in the cell. In the embodiment of the present application, the communication between the base station and the UE may include at least one of the following: the base station and the UE perform uplink communication, that is, the UE sends data to the base station through the uplink channel, and the base station receives data sent by the UE; the base station and the UE perform downlink communication, that is, the base station. The data is transmitted to the UE through the downlink channel, and the UE receives the data sent by the base station. In the embodiment of the present application, at least one may also be described as one or more, and may also be described as a positive integer. The plurality may be two, three, four or more, and the application does not limit the application. In the embodiment of the present application, an integer number may be zero or a positive integer.

When the base station and the UE perform uplink communication in the cell, the power of the uplink channel can be controlled. For example, the power of the uplink channel of the different UEs received by the base station is approximately the same, so that interference between uplink data of different UEs can be reduced. The uplink channel may include a physical random access channel (PRACH). In the wireless communication system, if the UE needs to communicate with the base station, the UE may first access the base station, and the PRACH is used to carry the access preamble sent by the UE to the base station in the access process, so that the base station can detect the access. UE.

Illustratively, FIG. 1 is a schematic diagram of a process of a UE accessing a base station. In this embodiment, a process in which a UE accesses a base station may also be referred to as an access procedure. As shown in FIG. 1, in step 101, the UE transmits an access preamble to the base station through the PRACH. The UE may determine an access preamble from the at least one available access preamble, and send the determined access preamble to the base station through the PRACH. At step 102, the base station sends message 2 (message 2, Msg2) to the UE. After receiving the access preamble, the base station sends a message 2 to the UE, where the message 2 includes an access preamble identifier of the access preamble received by the base station. The UE receives the message 2. If the access preamble corresponding to the access preamble identifier in the message 2 and the access preamble sent by the UE to the base station are the same, the UE considers that the access preamble sent by the UE may have been received by the base station. Exemplarily, if the access type is non-contention access, if the access preamble corresponding to the access preamble identifier in the message 2 and the access preamble sent by the UE to the base station are the same, the UE considers that the access preamble sent by the UE has been used by the base station. receive. If the access type is the contention access, if the access preamble corresponding to the access preamble identifier in the message 2 and the access preamble sent by the UE to the base station are the same, the UE considers that the access preamble sent by the UE may have been received by the base station or may not be Received by the base station. If the access type is the contention access, in step 101, multiple UEs may send the same access preamble to the base station through the PRACH, that is, an access conflict of multiple UEs occurs; in step 102, the multiple UEs The message 2 may be received. For a UE, the UE cannot determine whether the access preamble received by the base station is an access preamble sent by itself or an access preamble sent by other UEs, that is, the UE cannot determine whether the access preamble sent by the UE is used by the base station. received. Therefore, if the access type is contention access, the base station and the UE can perform the transmission of message 3 (message 3, Msg3) and message 4 (message 4, Msg4) for contention resolution, that is, the base station and the UE pass the message 3 and Message 4 further determines which access preamble the base station receives as the access preamble.

In a wireless communication system, such as NR, SUL is introduced in order to improve uplink coverage or increase uplink transmission rate. In NR and LTE, the base station and the UE can communicate using frequency domain resources. For example, the NR can support the frequency band below 6 GHz to the frequency band of 60 GHz, and the LTE can support the frequency band below 3 GHz. In a possible scenario, LTE is deployed in a lower frequency band, and when the NR is deployed in a higher frequency band, for example, the center frequency of the LTE carrier is 1.8 GHz (1.8 GHz carrier), and the center frequency of the NR carrier For 3.5 GHz (3.5 GHz carrier), the uplink coverage of NR may be limited due to the higher path frequency, the larger the path loss, and the limited uplink transmit power of the UE. At this time, if the uplink load of the LTE is light, or if the utilization of the uplink carrier of the LTE is low, the NR uplink transmission and the LTE uplink transmission can share the 1.8 GHz carrier to improve the uplink coverage of the NR, that is, the LTE system can The LTE uplink transmission is performed on the 1.8 GHz carrier, and the NR system can perform NR uplink transmission on the 1.8 GHz carrier. In the NR system, the carrier shared by the NR uplink transmission and the LTE uplink transmission may be referred to as an NR SUL resource, an NR SUL carrier, a SUL resource, or a SUL carrier, such as the above 1.8 GHz carrier; NR uplink transmission and LTE. A carrier that does not share uplink transmission may be referred to as an NR carrier, such as the 3.5 GHz carrier described above. The SUL carrier and the NR carrier may correspond to one NR cell. In this embodiment of the present application, an integer number of SUL carriers may be included in one NR cell.

It should be noted that, in the NR cell, the frequency of the NR carrier may also be equal to or smaller than the frequency of the SUL carrier. For example, when the NR uplink load is high, the uplink resource is increased by introducing the SUL carrier, and the NR uplink transmission rate can be improved. The SUL carrier is not limited to the application scenario of the embodiment of the present application. The SUL carrier in the embodiment of the present application may be extended to other first communication systems to the second communication system. Carrier sharing.

For an NR cell, if the SUL carrier is included in the cell, the UE supporting the SUL in the cell may send the PRACH to the base station through the NR carrier of the cell or through the SUL carrier of the cell. The UE supporting SUL in the cell may determine a carrier for transmitting the PRACH according to the downlink measurement amount and the SUL selection threshold. The downlink measurement quantity may be a downlink reference signal received power (RSRP), for example, a synchronization signal block (SSB) RSRP (SSB-RSRP), and a channel state information reference signal (channel state information reference signal). , RSI (CSI-RSRP) of CSI-RS, RSRP of cell specific reference signal (CRS), or RSRP of downlink demodulation reference signal (DMRS). For a UE supporting SUL, if the estimated downlink RSRP of the UE is smaller than the SUL selection threshold SUL-RSRP, the UE may send a PRACH to the base station through the SUL carrier of the cell; if the estimated downlink RSRP of the UE is greater than or equal to the SUL selection threshold SUL- RSRP, the UE may send a PRACH to the base station through the NR carrier of the cell.

For a NR cell, if the cell is included SUL carrier, the cell supports the SUL UE PRACH is transmitted to the base station by NR carrier of the cells or by SUL carrier of the cell, when PRACH power control can be determined according to P _o The transmission power of the PRACH. In the embodiment of the present application, P _o is the initial target received power of the PRACH, and the data type thereof may be a real number, and the unit is dBm (milliwatt). P _o may be a parameter configured by the base station for the UE by signaling. In the embodiment of the present application, the signaling transmitted between the base station and the UE may be high layer signaling or physical layer signaling. The high layer signaling may be radio resource control (RRC) signaling, broadcast message, system message or medium access control (MAC) control element (CE). The physical layer signaling may be the signaling carried by the physical control channel or the signaling carried by the physical data channel, where the physical control channel may be a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (enhanced physical control channel). A downlink control channel (EPDCCH), a narrowband physical downlink control channel (NPDCCH), or a machine type communication (MTC) physical downlink control channel (MPDCCH). The signaling carried by the PDCCH or the EPDCCH may also be referred to as downlink control information (DCI). The physical control channel may also be a physical sidelink control channel, and the signaling carried by the physical secondary link control channel may also be referred to as side link control information (SCI).

In a cell supporting a SUL carrier, the transmit power of the PRACH may be determined according to P _o based on various power control methods. In the embodiment of the present application, a specific power control method is used as an example, and the method does not constitute a limitation of the technical solution provided by the embodiment of the present application.

When the SUL is supported in the NR, the LTE-NR co-site deployment scenario and the LTE-NR non-co-site deployment scenario may be included. The method provided in this embodiment may be applied to the two deployment scenarios. To simplify the description, the embodiment of the present application is described by taking one of the deployment scenarios as an example. Exemplarily, as shown in FIG. 2, the LTE-NR co-site deployment scenario, that is, the base station in FIG. 2 supports LTE and NR. In FIG. 2, the SUL is supported in the NR, the base station supports multiple antennas, the base station manages the cell c, and the cell c has UE1 and UE2, and the base station and the UE can communicate through the beam 1 and the beam 2 in the cell c. As shown in FIG. 2, UE1 and UE2 support SUL, and beam 1 may correspond to NR carrier (for example, a carrier with a center frequency of 3.5 GHz) and a SUL carrier (for example, a carrier with a center frequency of 1.8 GHz), and UE1 may pass the beam. 1 performing NR uplink communication or downlink communication with the base station on the NR carrier, UE1 and UE2 may also perform NR uplink communication with the base station on the SUL carrier through beam 1; beam 2 corresponds to the NR carrier (for example, carrier with a center frequency of 3.5 GHz) ), UE2 can perform NR uplink communication or downlink communication with the base station on the NR carrier through the beam 2. In the embodiment of the present application, one beam may correspond to one antenna port. Therefore, beam 1 may also be described as antenna port 1, and beam 2 may also be described as antenna port 2.

As shown in FIG. 2, for a UE in the NR cell c, such as UE1 or UE2, it may send a PRACH to the base station through the NR carrier of the cell or through the SUL carrier of the cell. When the UE PRACH transmission, may be determined based on the initial transmit power of the PRACH target received power of the PRACH P _o. In a possible implementation, the UE may determine the expected target received power P _{PRACH, target, f, c of the PRACH} according to the P _{o of the} cell c according to formula (1) _, and may be according to formula (2) according to P _{PRACH, target, f , c} determines the transmit power of _PRACH P _PRACH,f,c (i):

P _{PRACH, target, f, c} = P _o + deltaPreamble + (preambleTransmissionConter-1) * powerRampingStep formula (1)

P _PRACH,f,c (i)=min{P _CMAX,f,c (i),P _{PRACH,target,f,c} +PL _f,c (i)} formula (2)

Equation (2), for index transmission time unit _{i, P CMAX, f, c (} i) is a UE in the cell c carrier f (e.g. NR carrier or SUL carrier) maximum transmission power when performing uplink transmission, Its data type can be a real number in dBm (milliwatts). PL _f,c (i) is a downlink path loss estimated for the carrier f of the cell c. For example, the UE may estimate the downlink reference signal transmitted in the NR downlink carrier (eg, 3.5 GHz) of the cell c to obtain the next The data type of the line path loss PL _f,c (i), PL _f,c (i) may be a real number in dB. In this embodiment of the present application, the transmission time unit may include a positive integer number of symbols, a slot, a mini-slot or a sub-slot, a subframe, and a sub-subframe. , radio frame, transmission time interval (TTI) and other transmission time units commonly used in the field.

In the formula (1), the deltaPreamble is an adjustment quantity, and the data type thereof may be a real number in units of dB. Illustratively, the deltaPreamble may be independently configured for various access preamble formats, wherein one access preamble format corresponds to the set { A value of a subcarrier spacing for transmitting an access preamble, a time domain length of a symbol for transmitting an access preamble, a sequence length of an access preamble, or a value corresponding to a subset of the set. The preambleTransmissionConter is the number of transmissions of the access preamble. For example, when the UE sends the access preamble to the base station in the one access procedure, the value of the preambleTransmissionConter is n when the nth transmission access preamble is sent, and n is a positive integer. For example, n is 1, 2, 3 or 4, etc. The powerRampingStep is a power climbing factor, which can be used to increase the transmission power of the access preamble as the number of access preamble transmissions increases, thereby improving the probability of successful access. The data type of the powerRampingStep can be a real number in units of dB.

According to formula (2), if the uplink path loss of the carrier transmitting the PRACH is approximately equal to PL _f,c (i), the power of the PRACH received by the base station is approximately P _PRACH,f,c (i)-PL _f,c (i ), it can be considered that the power of the PRACH received by the base station is approximately the expected target received power P _{PRACH, target, f, c} , so that the UE can ensure that the PRACH is correctly received by using the reasonable PRACH transmit power. Based on this, a PRACH power control method based on carrier frequency compensation is proposed. I.e., formula (1), P _o level parameter may be a carrier, that can independently NR carrier and the carrier SUL configuration values P _o to compensate NR carrier according to the estimated PL _{f, c} (i) for the carrier SUL In the power control of the PRACH, the path loss introduced due to the frequency difference between the NR carrier and the SUL carrier. Specifically, when the UE transmits the PRACH through the NR carrier and determines the PRACH according to the formula (1) and the formula (2), the value of P _o in the formula (1) is the value of P _o configured for the NR carrier; when the UE passes the SUL When the carrier transmits the PRACH and determines the PRACH according to the formula (1) and the formula (2), the value of P _o in the formula (1) is the value of P _o configured for the SUL carrier.

However, in the above-described carrier frequency compensation based PRACH power control method, for UE2, when transmitting PRACH through the SUL carrier, the path loss between the channel for estimating PL _f,c (i) and the channel for transmitting PRACH The path loss difference caused by the difference in carrier frequency difference includes the path loss difference caused by the difference in antenna gain between beam 1 and beam 2. Therefore, for UE2, the PRACH power control method based on carrier frequency compensation can only compensate the path loss difference caused by the carrier frequency difference, and cannot compensate the path loss difference caused by the antenna gain difference. Therefore, the reception quality of the PRACH cannot be guaranteed and the UE2 cannot be guaranteed in the SUL. The access success rate on the carrier, or the UE2 cannot be guaranteed to use the reasonable power to transmit the PRACH on the SUL carrier to increase the power consumption of the UE2. Wherein, for UE2, the antenna gain difference between the beam 2 for estimating PL _f,c (i) and the beam 1 corresponding to the SUL carrier for transmitting the PRACH can be described as the antenna gain P _Ant,1 and the antenna gain P _Ant, the difference between ₂ . Where P _Ant,1 can be shown in Figure 2 as the distance from point A on beam 2 to point B on beam 2 in direction 2, P _{Ant, 2} can be shown as beam 1 in Figure 2 The distance from point A on point C to point C on beam 1 in direction 2. The direction 1 is the direction in which the base station points to the UE1, and the direction 2 is the direction in which the base station points to the UE2.

In order to solve the problem similar to that in the access process of the foregoing UE2, the process shown in FIG. 3 is a power control method provided by the embodiment of the present application, which aims to improve the access success probability of the UE in the SUL scenario or reduce the UE's work. Consumption.

For the process shown in FIG. 3, for one SSB A of the plurality of synchronization signal blocks SSB, the base station sends an initial target received power configuration corresponding to the SSB A to the UE, where the initial target received power configuration corresponding to the SSB A is used to determine the SSB. The initial target received power corresponding to A, the downlink measured quantity corresponding to SSB A, and the initial target received power corresponding to SSB A are used to determine the transmit power of the PRACH transmitted on the SUL carrier. Correspondingly, for one SSB A of the plurality of synchronization signal blocks SSB, the UE receives an initial target received power configuration corresponding to the SSB A, where the initial target received power configuration corresponding to the SSB A is used to determine an initial target received power corresponding to the SSB A. The downlink measurement amount corresponding to the SSB A and the initial target reception power corresponding to the SSB A are used to determine the transmission power of the PRACH transmitted on the SUL carrier.

In the embodiment of the present application, for a technical feature, the technical features in the technical features may be distinguished by "1", "2", "A", "B", and "C", etc., the "1", There is no order or size order between the technical features described by "2", "A", "B", and "C".

The SSB involved in the embodiment of the present application is sent by the base station to the UE, and the SSB may include one or more of the following information: a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast. Physical broadcast channel (PBCH). The PSS and the SSS may be used to determine a physical cell identity (PCID), and may also be used for UE to obtain downlink synchronization with the base station; the PBCH may be used to configure part of system information or used to configure cell level parameters, such as PBCH. Can be used to configure the system frame number and / or used to configure the SSB index.

In a cell supporting multiple beams, the base station may send one or more SSBs to the UE. When the base station transmits multiple SSBs to the UE, one SSB may correspond to one SSB index, and one SSB may correspond to one beam. The different SSBs may correspond to the same beam or may correspond to different beams, which is not limited in this application. A beam can be a physical beam or a logical beam equivalent to multiple physical beams, and one beam can correspond to one antenna port. Wherein, one physical beam may be a beam formed by at least one antenna. As described above, the index of the SSB can be indicated by the PBCH in the SSB. Illustratively, Figure 4 shows an example of a multi-beam cell. As shown in FIG. 4(A), the base station can manage three cells of cell one, cell two, and cell three, and the coverage of each cell is about 120°. As shown in FIG. 4(B), for one cell in FIG. 4, for example, cell one, in the cell, the base station may send four SSBs, and one of the four SSBs corresponds to one beam, and the four SSBs are adopted. The corresponding 4 beams cover the cell.

With the method provided by the embodiment of the present application, as shown in FIG. 3, in a cell, the base station may send multiple SSBs to the UE, and the base station sends the initial target receiving power configuration corresponding to each SSB in the multiple SSBs to the UE. The initial target received power configuration corresponding to each SSB is used to determine an initial target received power corresponding to each SSB. For one of the multiple SSBs, the downlink measurement corresponding to the SSB and the initial target received power corresponding to the SSB are used to determine the transmit power of the PRACH transmitted on the SUL carrier. In the cell, if the UE detects one of the multiple SSBs, when the UE sends the PRACH to the base station, the UE may determine the downlink measurement according to the SSB and the initial target received power corresponding to the SSB. The transmission power of the PRACH.

According to the method in FIG. 3, for the UE2 in FIG. 2, the initial target received power configuration is independently configured for each beam or each SSB, and the difference between the beams can be considered, thereby compensating for the path loss difference caused by the antenna gain difference, and thus Ensuring UE2's access success rate on the SUL carrier or ensuring that UE2 transmits PRACH on the SUL carrier with reasonable power.

SSB 2对应的初始目标接收功率为

如果图2中UE2检测到了SSB2，当UE2在SUL载波向基站发送PRACH时，UE2可以将SSB2对应的初始目标接收功率

用作公式(1)中的P _o，根据公式(1)和公式(2)确定PRACH的发射功率。具体地，UE2可以如公式(3)根据

确定PRACH的期望目标接收功率P _{PRACH,target,f,c}，可以如公式(4)根据P _{PRACH,target,f,c}确定PRACH的发射功率： Illustratively, with the method of FIG. 3, for beam 1 and beam 2 shown in FIG. 2, beam 1 corresponds to SSB 1, beam 2 corresponds to SSB 2, and initial target received power corresponding to SSB 1 is

The initial target received power corresponding to SSB 2 is

If UE2 detects SSB2 in FIG. 2, when UE2 transmits a PRACH to the base station on the SUL carrier, UE2 may receive the initial target receiving power corresponding to SSB2.

As P _o in the formula (1), the transmission power of the PRACH is determined according to the formula (1) and the formula (2). Specifically, UE2 may be according to formula (3) according to

Determining the PRACH desired target received power _{P PRACH, target, f, c} , may be as shown in equation (4) P _{PRACH, target, f, c} determine a transmit power of the PRACH:

P _PRACH,f,c (i)=min{P _CMAX,f,c (i),P _{PRACH,target,f,c} +PL _f,c (i)} Equation (4)

In summary, in the conventional PRACH power control method, the configured initial target received power is a carrier-level parameter, and when it is used in a multi-beam system for transmitting a PRACH on a SUL carrier, the beam corresponding to the SUL carrier cannot be considered and used for performing The path loss between the downlink measured beams may not ensure the UE's access success rate on the SUL carrier, or the UE may not be able to use the reasonable power to transmit the PRACH on the SUL carrier to increase the power consumption of the UE. However, in the method provided by the embodiment of the present application, the configured initial target received power is an SSB level parameter or a beam level parameter, and when it is used for performing power control of the PRACH transmitted on the SUL carrier, the beam and the corresponding beam of the SUL carrier may be considered. The path loss difference between the beams used for downlink measurement, so that the access success rate of the UE on the SUL carrier can be improved by ensuring the reception quality of the PRACH, or the PRACH can be transmitted by using the UE with reasonable power on the SUL carrier. Never increase the power consumption of the UE.

It should be noted that the method provided by the embodiment of the present application is not limited to the SUL scenario, for example, it may also be applied to other scenarios in which the uplink and downlink beams are inconsistent.

In a method provided by the embodiment of the present application, in a possible implementation, in a cell supporting multiple beams, a carrier-level NR carrier initial target received power may be configured, and the UE determines the PRACH when the NR carrier sends the PRACH. The transmit power of the PRACH may be configured by the initial target received power of the SUL carrier of the multiple SSBs, that is, the initial target received power in the method of FIG. 3, for determining the transmit power of the PRACH when the SUL carrier transmits the PRACH.

In each method provided by the embodiment of the present application, for example, in each method of FIG. 3, for the PRACH, the initial target received power configuration corresponding to the SSB may be an initial target received power corresponding to the SSB, or may be an initial target receiving corresponding to the SSB. The power offset, where the initial target received power offset corresponding to the SSB is an offset of the initial target received power corresponding to the SSB relative to the carrier-level initial target received power. Illustratively, the carrier-level initial target received power may be the cell initial target received power for the NR carrier, or may be the carrier-level common initial target received power for the SUL carrier. The cell initial target received power of the NR carrier is used to determine the transmit power of the PRACH transmitted on the NR carrier, and the carrier-level common initial target received power of the SUL carrier is used to determine the transmit power of the PRACH transmitted on the SUL carrier. The carrier-level initial target receiving power may be pre-configured or may be sent by the base station to the UE, which is not limited in this application. With this method, signaling carrying the initial target received power configuration can be flexibly designed according to the requirements of the network for signaling overhead. For example, when the network is insensitive to the signaling overhead, the initial target received power configuration corresponding to the SSB may be the initial target received power corresponding to the SSB. By directly configuring the initial target received power, the base station side and the UE side may be reduced to determine the initial target received power. When the network is sensitive to the signaling overhead, the initial target received power configuration corresponding to the SSB may be the initial target received power offset corresponding to the SSB, thereby reducing the signaling overhead.

以及SSB 2对应的初始目标接收功率偏移

基站还可以为UE发送载波级初始目标接收功率

或者预配置(预定义)载波级初始目标接收功率

Illustratively, when the initial target received power configuration configured by the base station for the UE is the initial target received power offset, for beam 1 and beam 2 shown in FIG. 2, beam 1 corresponds to SSB 1, beam 2 corresponds to SSB 2 The base station may send the initial target receiving power offset corresponding to the SSB 1 to the UE.

And the initial target receive power offset corresponding to SSB 2

The base station may also send a carrier-level initial target received power for the UE.

Or pre-configured (predefined) carrier-level initial target received power

确定SSB1对应的初始目标 接收功率

并将SSB1对应的初始目标接收功率

用作公式(1)中的P _o，根据公式(1)和公式(2)确定PRACH的发射功率。具体地，UE1可以如公式(5)根据

确定PRACH的期望目标接收功率P _{PRACH,target,f,c}，可以如公式(6)根据P _{PRACH,target,f,c}确定PRACH的发射功率： If the UE1 in FIG. 2 detects the SSB1, when the UE1 transmits the PRACH to the base station on the SUL carrier, the UE1 may offset the initial target according to the SSB1.

Determine the initial target received power corresponding to SSB1

And the initial target receiving power corresponding to SSB1

As P _o in the formula (1), the transmission power of the PRACH is determined according to the formula (1) and the formula (2). Specifically, UE1 may be according to formula (5) according to

Determining the expected target received power P _{PRACH, target, f, c of the PRACH, and} determining the transmit power of the PRACH according to the formula (6) according to P _{PRACH, target, f, c} :

P _PRACH,f,c (i)=min{P _CMAX,f,c (i),P _{PRACH,target,f,c} +PL _f,c (i)} Equation (6)

确定SSB2对应的初始目标接收功率

将SSB2对应的初始目标接收功率

用作公式(1)中的P _o，根据公式(1)和公式(2)确定PRACH的发射功率。具体地，UE2可以如公式(7)根据

确定PRACH的期望目标接收功率P _{PRACH,target,f,c}，可以如公式(8)根据P _{PRACH,target,f,c}确定PRACH的发射功率： If the UE2 in FIG. 2 detects the SSB2, when the UE2 transmits the PRACH to the base station on the SUL carrier, the UE2 may receive the power offset according to the initial target corresponding to the SSB2.

Determine the initial target received power corresponding to SSB2

Initial target receiving power corresponding to SSB2

As P _o in the formula (1), the transmission power of the PRACH is determined according to the formula (1) and the formula (2). Specifically, UE2 can be based on formula (7).

Determining the expected target received power P _{PRACH, target, f, c of the PRACH, and} determining the transmit power of the PRACH according to the formula (8) according to P _{PRACH, target, f, c} :

P _PRACH,f,c (i)=min{P _CMAX,f,c (i),P _{PRACH,target,f,c} +PL _f,c (i)} Equation (8)

In the embodiment of the present application, when the base station configures the SSB-level initial target received power configuration for the SUL carrier by using signaling, for example, the signaling is referred to as RACH general configuration information RACH-ConfigGeneric, and the RACH general configuration information RACH-ConfigGeneric may be the following A RACH general configuration information RACH-ConfigGeneric to any one of the third RACH general configuration information RACH-ConfigGeneric. It should be noted that the signaling may also be referred to as other names, such as configuration signaling, first signaling, and the like.

The first RACH general configuration information RACH-ConfigGeneric:

The RACH general configuration information includes at least two initial target received power configurations. For an initial target received power configuration of the two initial target received power configurations, the initial target received power configuration corresponds to at least one SSB index, and one SSB index of the at least one SSB index corresponds to one SSB, and the at least one SSB index corresponds to At least one SSB, the initial target received power is configured as an initial target received power configuration corresponding to the at least one SSB, and the initial target received power determined according to the initial target received power configuration is an initial target received power corresponding to the at least one SSB.

Illustratively, as shown below, the RACH-ConfigGeneric includes N1 initial target received power configurations preambleReceivedTargetPowerSSB. For any one of the N1 initial target received power configurations, the initial target received power configuration corresponds to N2 SSB indexes SSBindex, and the initial target received power is configured to correspond to the N2 SSB indexes. The initial target received power configuration of the N2 SSBs, and the initial target received power preambleReceivedTargetPower determined according to the any one of the initial target received power configurations is the initial target received power of the N2 SSBs corresponding to the N2 SSB indexes. The number of the SSB indexes corresponding to the different initial target receiving power configurations in the N1 initial target receiving power configurations may be the same, and may be different, and is not limited in this application. Where N1 is an integer greater than or equal to 2, and N2 is a positive integer.

In the value of each cell of the signaling RACH-ConfigGeneric provided by the embodiment of the present application, SEQUENCE represents a sequence, for example, SEQUENCE (SIZE (1..N2)) OF SSBindex indicates that the sequence includes from the first to the first N2 SSBindexes have a total of N2 SSBindex; INTEGER represents an integer, for example, INTEGER (-200..-74) represents an integer between -200 and -74.

The second RACH general configuration information RACH-ConfigGeneric:

The RACH general configuration information includes at least two initial target received power configuration indexes, and an initial target received power configuration index may be determined according to one of the at least two initial target received power configuration indexes. An initial target received power configuration index of the two initial target received power configuration indexes, where the initial target received power configuration index corresponds to at least one SSB index, and one of the at least one SSB index corresponds to one SSB, the at least one The SSB index corresponds to the at least one SSB, and the initial target received power determined according to the initial target received power configuration index is the initial target received power corresponding to the at least one SSB.

Exemplarily, as shown below, the RACH-ConfigGeneric includes N1 initial target received power configuration indexes preambleReceivedTargetPowerIndex, and an initial target received power preambleReceivedTargetPower may be determined according to each initial target received power configuration index. For any one of the N1 initial target received power configuration indexes, the initial target received power configuration index corresponds to N2 SSB indexes SSBindex, and the initial determined according to the any one of the initial target received power configuration indexes The target received power preambleReceivedTargetPower is the initial target received power of the N2 SSBs corresponding to the N2 SSB indexes. The number of SSB indexes corresponding to different initial target receiving power configuration indexes in the N1 initial target receiving power configuration indexes may be the same, which may be different, and is not limited in this application. Where N1 is an integer greater than or equal to 2, and N2 is a positive integer.

The third RACH general configuration information RACH-ConfigGeneric:

For one SSB in the at least one SSB, the RACH general configuration information includes an initial target received power configuration corresponding to the SSB.

Illustratively, as shown in the following, the RACH common configuration information includes a corresponding list SSB-preambleReceivedTargetPower-List of the SSB and the initial target received power configuration, configured to configure an initial target received power configuration corresponding to the N3 SSBs. The list includes N3 SSBs and a corresponding configuration SSB-preambleReceivedTargetPower of the initial target received power configuration. For any one of the N3 corresponding configurations, it is used to indicate an SSB index SSBindex, and an initial target received power configuration preambleReceivedTargetPower corresponding to the SSB corresponding to the SSB index. Where N3 is a positive integer.

It should be noted that, in the specific example of the RACH-ConfigGeneric listed in the foregoing three types of RACH general configuration information RACH-ConfigGeneric, the initial target received power configuration is an initial target received power, and the information may also be described. Replace with the initial target receive power offset.

In each method provided by the embodiment of the present application, for example, in each method of FIG. 3, when multiple SUL carriers are supported in a cell, an initial target corresponding to the SSB may be independently configured for each SUL carrier in the multiple SUL carriers. The initial target receiving power configuration corresponding to the SSB of each SUL carrier may be the same or different, and is not limited in this application. For example, the method may be described as: for one SUL carrier A of the plurality of SUL carriers, for one SSB A of the plurality of synchronization signal blocks SSB, the base station transmits an initial target received power configuration corresponding to the SSB A to the UE, where the SSB The initial target received power configuration corresponding to A is used to determine the initial target received power corresponding to SSB A, and the downlink measured quantity corresponding to SSB A and the initial target received power corresponding to SSB A are used to determine the transmit power of the PRACH transmitted on SUL carrier A. Correspondingly, for one SSU carrier A of the plurality of SUL carriers, for one SSB A of the plurality of synchronization signal blocks SSB, the UE receives an initial target received power configuration corresponding to the SSB A, where the initial target received power corresponding to the SSB A The initial target received power corresponding to the SSB A is configured, and the downlink measurement corresponding to the SSB A and the initial target received power corresponding to the SSB A are used to determine the transmit power of the PRACH transmitted on the SUL carrier A.

Illustratively, 2 SUL carriers (eg, SUL carrier B and SUL carrier C) and 2 SSBs (eg, SSB B and SSB C) are supported in the cell.

For example, for the SUL carrier B, the base station may send the initial target received power configuration corresponding to the SSB B and the initial target received power configuration corresponding to the SSB B to the UE, where the downlink measurement amount corresponding to the SSB B and the initial target corresponding to the SSB B The received power is used to determine the transmit power when the PRACH is transmitted on the SUL carrier B through the SSB B, and the downlink measurement amount corresponding to the SSB C and the initial target received power corresponding to the SSB C are used to determine when the PRACH is transmitted on the SUL carrier B through the SSB C. Transmit power.

For example, for the SUL carrier C, the base station may send the initial target received power configuration corresponding to the SSB B and the initial target received power configuration corresponding to the SSB B to the UE, where the downlink measurement amount corresponding to the SSB B and the initial corresponding to the SSB B The target received power is used to determine the transmit power when the PRACH is transmitted on the SUL carrier C through the SSB B, and the downlink measurement amount corresponding to the SSB C and the initial target received power corresponding to the SSB C are used to determine that the PRACH is transmitted on the SUL carrier C through the SSB C. The transmit power at the time.

In the method of FIG. 3, the base station may send an initial target received power configuration corresponding to the SSB by using a system message carried by a physical layer data channel (for example, a physical downlink shared control channel (PDSCH)) or a PBCH. .

In the method provided by the embodiment of the present application, the carrier-level power control is taken as an example for description. It should be noted that the method provided by the embodiment of the present application may also be applied to a bandwidth part (BWP) level power control.

When the base station and the UE use the frequency domain resources for wireless communication, the base station manages the carrier frequency domain resources, and allocates the frequency domain resources to the UE from the carrier frequency domain resources, so that the base station and the UE can use the allocated frequency domain resources for communication. The carrier frequency domain resource may be a system frequency domain resource, or may be a frequency domain resource that the base station can manage and allocate. The carrier frequency domain resource may be a continuous frequency domain resource, and the carrier frequency domain resource may also be referred to as a carrier.

BWP is a resource in a carrier. Exemplarily, the base station configures a BWP for the UE from the carrier, and the base station schedules the UE in the configured BWP. The base station may allocate some or all resources in the configured BWP to the UE for performing communication between the base station and the UE. The BWP configured by the base station for the UE is included in the carrier, and may be a continuous or discontinuous part of the resources in the carrier, or may be all resources in the carrier. The BWP may also be referred to as a bandwidth resource, a frequency domain resource part, a partial frequency domain resource, a frequency resource part, a partial frequency resource, a carrier BWP or other names, which is not limited in this application. When the BWP is a contiguous resource in the carrier, the BWP may also be referred to as a subband, a narrowband, or other name, which is not limited in this application.

When the method provided by the embodiment of the present application is applied to the BWP-level power control, that is, when the PRACH is transmitted in the BWP, the formula (2) involved in the embodiment of the present application and the P _PRACH in each formula corresponding to the formula (2) _{, f,c} (i) is the transmit power of the PRACH in the BWP, and PL _f,c (i) is replaced with the downlink path loss estimated for the BWP. Wherein, each formula corresponding to the formula (2) may be the formula (4), the formula (6), and the formula (8).

FIG. 5 is a diagram showing an example of a process for a UE to access a base station according to an embodiment of the present application. In the access procedure, the SUL carrier is supported in the cell where the UE is located, and the UE supports the SUL carrier as an example.

S501. The base station sends an SSB to the UE, and the UE detects the SSB.

In an orthogonal frequency division multiplexing (OFDM)-based wireless communication system, such as NR and LTE, frequency domain resources used for data transmission by a base station and a UE may be represented as subcarriers, adjacent to each other. The distance of the carrier can be described as a subcarrier spacing. In a wireless communication system, for example, in NR, a plurality of subcarrier intervals are introduced in order to accommodate transmission scene diversity or service diversity. For example, NR can support subcarrier spacings of 7.5 kHz, 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz. When the base station transmits the SSB to the UE, at least one of the plurality of subcarrier intervals may also be used.

In the embodiment of the present application, when the base station sends the SSB to the UE, the multiple SSBs may be sent in one time window in a time window, and one SSB corresponds to one beam, and different SSBs may correspond to different beams, or may be the same. The beam is not limited in this application. The unit of the length of the time window may be a time unit commonly used in the field, such as seconds, milliseconds, microseconds, frames, subframes, sub-subframes, time slots, fields, mini-slots, symbols, transmission time intervals, or Other time units. In the embodiment of the present application, the length of the time window is 5 ms as an example.

Illustratively, when the SSB is transmitted using a 15 kHz or 30 kHz subcarrier spacing, at least 4 SSBs are transmitted in a 5 ms window in a frequency band below 3 GHz, the 4 SSBs corresponding to 4 beams, wherein 1 SSB can be mapped to 4 OFDM Symbol; in the 3 GHz to 6 GHz band, up to 8 SSBs can be transmitted in a 5 ms window, and the 8 SSBs correspond to corresponding 8 beams. When transmitting SSBs using 120 kHz or 240 kHz subcarrier spacing, up to 64 SSBs are transmitted in a 5 ms window, corresponding to 64 beams.

The UE detects the SSB in the time window. If the SSB is detected or received, the UE may determine an index of the SSB according to the PBCH in the SSB.

S502. The base station sends an initial target received power configuration corresponding to the SSB to the UE, where the initial target received power configuration is used to determine an initial target received power corresponding to the SSB, and the initial target received power corresponding to the SSB and the downlink measurement corresponding to the SSB are used to determine the SUL carrier. The transmitted power of the transmitted PRACH. Correspondingly, the UE receives an initial target received power configuration corresponding to the SSB, the initial target received power configuration is used to determine an initial target received power corresponding to the SSB, and the initial target received power corresponding to the SSB and the downlink measurement corresponding to the SSB are used to determine the SUL carrier transmission. PRACH transmit power

The methods involved in FIG. 3 can be applied in S502.

In the embodiment of the present application, when the base station sends multiple SSBs to the UE, the base station may configure, for the multiple SSBs, the initial target received power configuration corresponding to each SSB. In the multiple SSBs, the initial target receiving power configurations of different SSBs may be the same or different, and the present application is not limited.

S503. The UE sends a PRACH to the base station, and the base station receives the PRACH sent by the UE.

For the SSB received by the UE in S501, the UE performs downlink measurement on the downlink signal corresponding to the SSB, and obtains a downlink measurement quantity of the downlink signal. For example, the downlink signal may be the SSB or the downlink reference signal, and the downlink reference signal may be a cell reference signal (CRS), a demodulation reference signal (DMRS), or a channel state. A downlink reference signal such as a channel state information reference signal (CSI-RS); the downlink measurement quantity may be an RSRP.

If the RSRP measured by the UE is smaller than the SUL selection threshold, the UE may determine the transmit power of the PRACH according to the initial target received power configuration corresponding to the received SSB, and use the determined PRACH transmission according to the methods or reference S502 involved in FIG. The power transmits a PRACH to the base station on the SUL carrier. In this scenario, the UE can be considered as an edge user in the NR cell, so the transmission quality of the uplink signal between the UE and the base station can be improved by the SUL carrier.

In the foregoing embodiment of the present application, the method provided by the embodiment of the present application is introduced from the perspective of interaction between the base station and the UE. In order to implement the functions in the method provided by the embodiments of the present application, the base station and the UE may include a hardware structure and/or a software module, and implement the foregoing functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. One of the above functions is performed in a hardware structure, a software module, or a hardware structure plus a software module, depending on the specific application and design constraints of the technical solution.

FIG. 6 is a schematic structural diagram of a device 600 according to an embodiment of the present application. The device 600 can be a UE, and can implement the function of the UE in the method provided by the embodiment of the present application. The device 600 can also be a device that can support the UE to implement the function of the UE in the method provided by the embodiment of the present application. Device 600 can be a hardware structure, a software module, or a hardware structure plus a software module. Device 600 can be implemented by a chip system. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.

The device 600 includes a communication module 602, configured to receive an initial target received power configuration corresponding to the SSB for one SSB of the plurality of synchronization signal blocks SSB, where an initial target received power configuration corresponding to the SSB is used to determine the SSB corresponding The initial target received power, the downlink measured amount corresponding to the SSB and the initial target received power are used to determine the transmit power of the PRACH transmitted on the SUL carrier. Communication module 602 is for device 600 to communicate with other modules, which may be circuits, devices, interfaces, buses, software modules, transceivers, or any other device that can implement communication.

The device 600 may further include a processing module 604, configured to determine, according to an initial target received power configuration corresponding to the SSB, an initial target received power corresponding to the SSB according to an SSB of the plurality of synchronization signal blocks SSB, according to the downlink corresponding to the SSB. The measured amount and the initial target received power determine the transmit power of the PRACH transmitted on the SUL carrier. The communication module 602 and the processing module 604 are coupled. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be in an electrical, mechanical or other form for information interaction between devices, units or modules.

FIG. 7 is a schematic structural diagram of an apparatus 700 according to an embodiment of the present application. The device 700 can be a base station, and can implement the function of the base station in the method provided by the embodiment of the present application. The device 700 can also be a device that can support the base station to implement the function of the base station in the method provided by the embodiment of the present application. Apparatus 700 can be a hardware structure, a software module, or a hardware structure plus a software module. Device 700 can be implemented by a chip system.

The device 700 includes a communication module 702, configured to send an initial target received power configuration corresponding to the SSB to one SSB of the plurality of synchronization signal blocks SSB, where the initial target received power configuration corresponding to the SSB is used to determine the SSB corresponding The initial target received power, the downlink measured amount corresponding to the SSB and the initial target received power are used to determine the transmit power of the PRACH transmitted on the SUL carrier. Communication module 702 is for device 700 to communicate with other modules, which may be circuits, devices, interfaces, buses, software modules, transceivers, or any other device that can implement communication.

The device 700 may further include a processing module 704, configured to generate an initial target received power configuration corresponding to the SSB. The communication module 702 and the processing module 704 are coupled.

FIG. 8 is a schematic structural diagram of an apparatus 800 according to an embodiment of the present application. The device 800 can be a UE, and can implement the function of the UE in the method provided by the embodiment of the present application. The device 800 can also be a device that can support the UE to implement the function of the UE in the method provided by the embodiment of the present application.

As shown in FIG. 8, the device 800 includes a processing system 802 for implementing or for supporting the UE to implement the functions of the UE in the method provided by the embodiment of the present application. Processing system 802 can be a circuit that can be implemented by a chip system. The processing system 802 includes one or more processors 822, which may be used to implement or support the UE to implement the functions of the UE in the method provided by the embodiment of the present application. Processor 822 may also be used to manage other devices included in processing system 802 when processing system 802 includes other devices than processor 822, which may be, for example, memory 824, bus 826, and One or more of the bus interfaces 828.

Processing system 802 may also include one or more memories 824 for storing instructions and/or data. Further, the memory 824 can also be included in the processor 822. If memory 824 is included in processing system 802, processor 822 can be coupled to memory 824. Processor 822 can operate in conjunction with memory 824. Processor 822 can execute the instructions stored in memory 824. When the processor 822 executes the instructions stored in the memory 824, the UE may implement or support the UE to implement the functions of the UE in the method provided by the embodiment of the present application. Processor 822 may also read data stored in memory 824. Memory 824 may also store data obtained by processor 822 when the instructions are executed.

In this embodiment, the processor may be a central processing unit (CPU), a general-purpose processor network processor (NP), a digital signal processing (DSP), a microprocessor. , a microcontroller, a programmable logic device (PLD), or any combination thereof. The processor can also be any other device having processing functionality, such as a circuit, device, or software module.

In the embodiment of the present application, the memory includes a volatile memory, such as a random-access memory (RAM); the memory may also include a non-volatile memory, such as a fast A flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); the memory may further include a combination of the above types of memories; the memory may further include any other device having a storage function. For example, a circuit, device, or software module.

The processor 822 implements or supports the UE to implement the method provided by the embodiment of the present application, and is configured to receive and process an initial target received power configuration corresponding to the SSB for one SSB of the multiple synchronization signal blocks SSB, where the SSB corresponds to The initial target received power configuration is used to determine an initial target received power corresponding to the SSB, and the downlink measured amount and the initial target received power corresponding to the SSB are used to determine a transmit power of the PRACH transmitted on the SUL carrier.

The processor 822 is further configured to determine, according to an initial target received power configuration corresponding to the SSB, an initial target received power corresponding to the SSB according to an initial target received power configuration corresponding to the SSB, according to the downlink measurement quantity and the initial target corresponding to the SSB. The received power determines the transmit power of the PRACH transmitted on the SUL carrier.

Processing system 802 can also include a bus interface 828 for providing an interface between bus 826 and other devices. Among them, the bus interface can also be called a communication interface.

Device 800 may also include a transceiver 806 for communicating over a transmission medium with other communication devices such that other devices in device 800 can communicate with other communication devices. Among other things, the other device may be the processing system 802. Illustratively, other devices in device 800 may utilize transceiver 806 to communicate with other communication devices to receive and/or transmit corresponding information. It can also be described that other devices in device 800 may receive corresponding information, wherein the corresponding information is received by transceiver 806 over a transmission medium, which may be via bus interface 828 or through bus interface 828 and bus 826. Interacting between transceiver 806 and other devices in device 800; and/or other devices in device 800 may transmit corresponding information, wherein the corresponding information is transmitted by transceiver 806 over a transmission medium, the corresponding The information can be exchanged between the transceiver 806 and other devices in the device 800 via the bus interface 828 or through the bus interface 828 and the bus 826.

The device 800 may also include a user interface 804, which is an interface between the user and the device 800, and may be used for information interaction between the user and the device 800. Illustratively, user interface 804 may be at least one of a keyboard, a mouse, a display, a speaker, a microphone, and a joystick.

The above description mainly describes a device structure provided by the embodiment of the present application from the perspective of the device 800. In the device, the processing system 802 includes a processor 822, and may also include one or more of a memory 824, a bus 826, and a bus interface 828 for implementing the method provided by the embodiments of the present application. Processing system 802 is also within the scope of this application.

FIG. 9 is a schematic structural diagram of an apparatus 900 according to an embodiment of the present application. The device 900 can be a base station, and can implement the function of the base station in the method provided by the embodiment of the present application. The device 900 can also be a device that can support the base station to implement the function of the base station in the method provided by the embodiment of the present application.

As shown in FIG. 9, the apparatus 900 includes a processing system 902 for implementing or for supporting a base station to implement the functions of the base station in the method provided by the embodiment of the present application. Processing system 902 can be a circuit that can be implemented by a chip system. The processing system 902 includes one or more processors 922, which may be used to implement or support the base station to implement the functions of the base station in the method provided by the embodiments of the present application. Processor 922 may also be used to manage other devices included in processing system 902 when processing system 902 includes other devices than processor 922, which may be, for example, memory 924, bus 926, and One or more of the bus interfaces 928.

Processing system 902 may also include one or more memories 924 for storing instructions and/or data. Further, the memory 924 may also be included in the processor 922. If processing system 902 includes memory 924, processor 922 can be coupled to memory 924. Processor 922 can operate in conjunction with memory 924. Processor 922 can execute the instructions stored in memory 924. When the processor 922 executes the instructions stored in the memory 924, the base station can implement or support the functions of the base station in the method provided by the embodiment of the present application. Processor 922 may also read data stored in memory 924. Memory 924 may also store data obtained by processor 922 when executing instructions.

The processor 922 implements or supports the base station to implement the method provided by the embodiment of the present application, and is configured to generate and send an initial target received power configuration corresponding to the SSB for one SSB of the multiple synchronization signal blocks SSB, where the SSB corresponds to The initial target received power configuration is used to determine an initial target received power corresponding to the SSB, and the downlink measured amount and the initial target received power corresponding to the SSB are used to determine a transmit power of the PRACH transmitted on the SUL carrier.

Processing system 902 can also include a bus interface 928 for providing an interface between bus 926 and other devices. Among them, the bus interface can also be called a communication interface.

Apparatus 900 may also include a transceiver 906 for communicating over a transmission medium with other communication devices such that other devices in device 900 can communicate with other communication devices. Among other things, the other device may be the processing system 902. Illustratively, other devices in device 900 may utilize transceiver 906 to communicate with other communication devices to receive and/or transmit corresponding information. It can also be described that other devices in device 900 may receive corresponding information, wherein the corresponding information is received by transceiver 906 via a transmission medium, which may be via bus interface 928 or through bus interface 928 and bus 926. Interacting between transceiver 906 and other devices in device 900; and/or other devices in device 900 may transmit corresponding information, wherein the corresponding information is transmitted by transceiver 906 over a transmission medium, the corresponding The information can be exchanged between the transceiver 906 and other devices in the device 900 via the bus interface 928 or through the bus interface 928 and the bus 926.

The device 900 may also include a user interface 904, which is an interface between the user and the device 900, possibly for user interaction with the device 900. Illustratively, user interface 904 may be at least one of a keyboard, a mouse, a display, a speaker, a microphone, and a joystick.

The above description mainly describes a device structure provided by the embodiment of the present application from the perspective of the device 900. In the device, the processing system 902 includes a processor 922, and may also include one or more of a memory 924, a bus 926, and a bus interface 928 for implementing the method provided by the embodiments of the present application. Processing system 902 is also within the scope of the present application.

In the device embodiment of the present application, the module division of the device is a logical function division, and the actual implementation may have another division manner. For example, each functional module of the device may be integrated into one module, or each functional module may exist separately, or two or more functional modules may be integrated into one module.

The method provided by the embodiment of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, a network device, a terminal, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, an SSD) or the like.

The above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the scope of protection thereof. Modifications, equivalent substitutions, improvements, etc., which are made on the basis of the technical solutions of the present application, are to be included in the scope of the present application.

Claims (19)

A power control method, comprising: Receiving, by one of the plurality of synchronization signal blocks SSB, an initial target received power configuration corresponding to the one SSB, where an initial target received power configuration corresponding to the one SSB is used to determine an initial target receiving corresponding to the one SSB The power, the downlink measurement amount corresponding to the one SSB and the initial target reception power are used to determine the transmission power of the physical random access channel PRACH transmitted on the SUL carrier. The method according to claim 1, wherein the initial target received power configuration corresponding to the one SSB comprises: The initial target received power corresponding to the one SSB; or An initial target received power offset corresponding to the one SSB, where an initial target received power offset corresponding to the one SSB is an offset of an initial target received power corresponding to the one SSB relative to a carrier-level initial target received power. The method according to claim 1 or 2, wherein the initial target received power configuration corresponding to the one SSB corresponds to the SUL carrier, and the SUL carrier is included in a plurality of SUL carriers. A power control method, comprising: Transmitting, by one of the plurality of synchronization signal blocks SSB, an initial target received power configuration corresponding to the one SSB, where an initial target received power configuration corresponding to the one SSB is used to determine an initial target reception corresponding to the one SSB The power, the downlink measurement amount corresponding to the one SSB and the initial target reception power are used to determine the transmission power of the physical random access channel PRACH transmitted on the SUL carrier. The method according to claim 4, wherein the initial target received power configuration corresponding to the one SSB comprises: The initial target received power corresponding to the one SSB; or An initial target received power offset corresponding to the one SSB, where an initial target received power offset corresponding to the one SSB is an offset of an initial target received power corresponding to the one SSB relative to a carrier-level initial target received power. The method according to claim 4 or 5, wherein the initial target received power configuration corresponding to the one SSB corresponds to the SUL carrier, and the SUL carrier is included in a plurality of SUL carriers. A device for carrying out the method according to any one of claims 1 to 3. An apparatus, comprising a processor and a memory, the processor being coupled to the memory, the processor for implementing the method of any one of claims 1 to 3. An apparatus comprising a processor and a communication interface, For one of the plurality of synchronization signal blocks SSB, the processor receives an initial target received power configuration corresponding to the one SSB by using the communication interface, where an initial target received power configuration corresponding to the one SSB is used for determining The initial target received power corresponding to the one SSB, and the downlink measurement amount and the initial target received power corresponding to the one SSB are used to determine the transmit power of the physical random access channel PRACH transmitted on the SUL carrier. The apparatus according to claim 9, wherein the initial target received power configuration corresponding to the one SSB comprises: The initial target received power corresponding to the one SSB; or An initial target received power offset corresponding to the one SSB, where an initial target received power offset corresponding to the one SSB is an offset of an initial target received power corresponding to the one SSB relative to a carrier-level initial target received power. The apparatus according to claim 9 or 10, wherein an initial target received power configuration corresponding to the one SSB corresponds to the SUL carrier, and the SUL carrier is included in a plurality of SUL carriers. A device for implementing the method of any one of claims 4 to 6. An apparatus comprising a processor and a memory, the processor being coupled to the memory, the processor being used to implement the method of any one of claims 4 to 6. An apparatus comprising a processor and a communication interface, For one of the plurality of synchronization signal blocks SSB, the processor transmits an initial target received power configuration corresponding to the one SSB by using the communication interface, where an initial target received power configuration corresponding to the one SSB is used for determining The initial target received power corresponding to the one SSB, and the downlink measurement amount and the initial target received power corresponding to the one SSB are used to determine the transmit power of the physical random access channel PRACH transmitted on the SUL carrier. The apparatus according to claim 14, wherein the initial target received power configuration corresponding to the one SSB comprises: The initial target received power corresponding to the one SSB; or An initial target received power offset corresponding to the one SSB, where an initial target received power offset corresponding to the one SSB is an offset of an initial target received power corresponding to the one SSB relative to a carrier-level initial target received power. The apparatus according to claim 14 or 15, wherein an initial target received power configuration corresponding to the one SSB corresponds to the SUL carrier, and the SUL carrier is included in a plurality of SUL carriers. A communication system comprising the apparatus of any one of claims 7 to 11, and the apparatus of any one of claims 12 to 16. A computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 3. A computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 4 to 6.

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