CN114501639A

CN114501639A - Array plane selection method, terminal, network equipment and storage medium

Info

Publication number: CN114501639A
Application number: CN202011565451.1A
Authority: CN
Inventors: 骆亚娟; 李辉; 高秋彬; 陈润华; 黄秋萍
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-10-23
Filing date: 2020-12-25
Publication date: 2022-05-13

Abstract

The embodiment of the application provides a method for selecting a front surface, a terminal, a network device and a storage medium, wherein the method comprises the following steps: transmitting assistance information to a network device, the assistance information comprising: identification information of an optimal reference signal required by uplink transmission or maximum power back-off P-MPR values based on one or more array planes corresponding to one or more array planes of a terminal when a maximum power radiation MPE event occurs; and receiving indication information sent by the network device based on the auxiliary information, wherein the indication information is used for indicating a front surface or a beam used by the terminal for subsequent uplink transmission, or indicating the terminal to perform new uplink beam scanning. The embodiment of the application avoids uplink coverage loss caused by MPE problem.

Description

Array plane selection method, terminal, network equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method for selecting a wavefront, a terminal, a network device, and a storage medium.

Background

When a terminal with multiple antenna arrays performs uplink transmission, when it is detected that the antenna arrays are aligned with a human body and continue for a while, in order to avoid causing harm to the human body, the current processing mechanism is to perform power backoff, that is, to reduce uplink transmission power. However, uplink coverage degradation may be caused after power backoff, and how to avoid or reduce uplink coverage degradation of the multi-front-end terminal after power backoff is a currently considered problem.

Disclosure of Invention

The embodiment of the application provides a wavefront selection method, a terminal, a network device and a storage medium, so as to solve the problem of uplink coverage loss caused by the fact that the network device cannot accurately select a wavefront when a multi-wavefront terminal has an MPE problem.

In a first aspect, an embodiment of the present application provides a wavefront selection method, including:

transmitting assistance information to a network device, the assistance information comprising: identification information of an optimal reference signal required by uplink transmission or maximum power back-off P-MPR values based on one or more array planes corresponding to one or more array planes of a terminal when a maximum power radiation MPE event occurs;

and receiving indication information sent by the network device based on the auxiliary information, wherein the indication information is used for indicating a front surface or a beam used by the terminal for subsequent uplink transmission, or indicating the terminal to perform new uplink beam scanning.

In a second aspect, an embodiment of the present application provides a wavefront selection method, including:

receiving auxiliary information sent by a terminal, wherein the auxiliary information comprises: identification information of an optimal reference signal required by uplink transmission or maximum power back-off P-MPR values based on one or more array planes corresponding to one or more array planes of a terminal when a maximum power radiation MPE event occurs;

determining a front surface or a beam used by the terminal for new uplink beam scanning or subsequent uplink transmission according to the auxiliary information;

and sending indication information to the terminal, wherein the indication information is used for indicating a front surface or a beam used by subsequent uplink transmission of the terminal, or indicating the terminal to perform new uplink beam scanning.

In a third aspect, an embodiment of the present application provides a terminal, including a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

transmitting assistance information to a network device, the assistance information comprising: identification information of an optimal reference signal required by uplink transmission or maximum power back-off P-MPR values based on one or more wavefront(s) corresponding to the terminal when the MPE event occurs.

In a fourth aspect, an embodiment of the present application provides a network device, including a memory, a transceiver, a processor:

In a fifth aspect, an embodiment of the present application provides a wavefront selection apparatus, including:

a sending module, configured to send auxiliary information to a network device, where the auxiliary information includes: identification information of an optimal reference signal required by uplink transmission or maximum power back-off P-MPR values based on one or more wavefront(s) corresponding to the terminal when the MPE event occurs.

A receiving module, configured to receive indication information sent by the network device based on the auxiliary information, where the indication information is used to indicate a front surface or a beam used by the terminal for subsequent uplink transmission, or indicate the terminal to perform new uplink beam scanning.

In a sixth aspect, an embodiment of the present application provides a wavefront selection apparatus, including:

a receiving module, configured to receive auxiliary information sent by a terminal, where the auxiliary information includes: identification information of an optimal reference signal required by uplink transmission or maximum power back-off P-MPR values based on one or more array planes corresponding to one or more array planes of a terminal when a maximum power radiation MPE event occurs;

a determining module, configured to determine, according to the auxiliary information, a front plane or a beam used by the terminal for new uplink beam scanning or subsequent uplink transmission;

a sending module, configured to send indication information to the terminal, where the indication information is used to indicate a wavefront or a beam used by subsequent uplink transmission of the terminal, or indicate the terminal to perform new uplink beam scanning.

In a seventh aspect, this application provides a processor-readable storage medium, which stores a computer program for causing a processor to execute the method of the first aspect or the second aspect.

According to the array plane selection method, the terminal, the network device and the storage medium provided by the embodiment of the application, the auxiliary information is sent to the network device, and the auxiliary information comprises identification information of an optimal reference signal required by uplink transmission or P-MPR values corresponding to one or more array planes of the terminal when an MPE event occurs, and performance differences of different transmission array planes of the terminal can be accurately reflected on the basis of the auxiliary information, so that the network device can accurately indicate the array planes or beams used by subsequent uplink transmission of the terminal or indicate the terminal to perform new uplink beam scanning on the basis of the auxiliary information, and uplink coverage loss caused by the MPE problem is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a flowchart illustrating steps of a wavefront selection method applied to a terminal in an embodiment of the present application;

fig. 2 is a flowchart illustrating steps of a wavefront selection method applied to a network device according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a terminal in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a network device in an embodiment of the present application;

fig. 5 is a block diagram of a wavefront selection apparatus applied to a terminal in the embodiment of the present application;

fig. 6 is a block diagram of a front plane selection apparatus applied to a network device in the embodiment of the present application;

FIG. 7 is a schematic structural diagram of an MCE CE in the embodiment of the present application;

fig. 8 is a second schematic structural diagram of the MCE CE in the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In NR, when a terminal detects a Maximum Power Exposure (MPE) event, the terminal determines a Maximum allowed Power backoff value and performs a corresponding Power backoff, and when the Power backoff value in a certain time period is greater than a threshold value (PHR-Tx-powerfactory change dB), the terminal initiates a Power Headroom Report (PHR) Report, and reports a front-based Maximum Power backoff (Panel Maximum Power Reduction) value and a Maximum transmission Power value to a base station through a Media Access Control (MAC-CE) Element. The base station receives MPE report of the terminal, knows that the terminal has MPE problem, uses P-MPR for power retroversion, and the maximum output power after retroversion is P_CMAX,f,cThe current power transmission margin is PH. The base station readjusts the resource allocation of the signal transmitted by the terminal according to the parameters, for example, the base station may estimate, according to the parameters, a duty cycle (duty cycle) at which the terminal performs uplink transmission without power backoff to meet the radiation limit requirement, or the base station may also reduce a Modulation and Coding Scheme (MCS) for uplink transmission, or reduce the number of physical resource blocks transmitted by the terminal. The terminal sends the uplink signal according to the scheduling of the base station, so that the aims of meeting MPE requirements and realizing good communication quality are fulfilled.

But in the existing MPE solutions, the case where the terminal has multiple wavefronts is not considered. When the terminal has a plurality of transmission arrays, the transmission path between each terminal transmission array and the base station is different, and the MPE shielding event of each transmission array is independent. At this time, the existing P-MPR reporting scheme cannot accurately reflect the performance difference of different transmission front surfaces of the terminal, so that the base station cannot instruct the terminal to select multiple transmission front surfaces by using the feedback information of the terminal when receiving the report of the terminal, thereby reducing the uplink coverage loss or the uplink coverage loss caused by the MPE problem.

Therefore, embodiments of the present application provide a method, a terminal, a network device, and a storage medium for selecting a transmission front, so as to solve the problem that the existing solution cannot instruct the terminal to select multiple transmission fronts by using feedback information of the terminal.

The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

The technical scheme provided by the embodiment of the application can be suitable for various systems, particularly 5G systems. For example, the applicable system may be a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) system, a long term evolution (long term evolution, LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an LTE-a (long term evolution) system, a universal mobile system (universal mobile telecommunications system, UMTS), a Worldwide Interoperability for Mobile Access (WiMAX) system, a New Radio network (NR 5) system, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5GS), and the like.

The terminal device referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN). Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application. Since the terminal device forms a network capable of supporting communication with other network devices (e.g., a core network device, an access network device (i.e., a base station)), the terminal device is also considered as a network device in the present invention.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for providing services to a terminal. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames with Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), may be a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), may be an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) System, may be a 5G Base Station (gbb) in a 5G network architecture (next evolution System), may be a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico Base Station), and the like, which are not limited in the embodiments of the present application. In some network architectures, a network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Furthermore, it should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The present application is explained in detail below.

As shown in fig. 1, a flowchart of steps of a wavefront selection method applied to a terminal in the embodiment of the present application is shown, where the method includes the following steps:

step 101: the assistance information is sent to the network device.

Specifically, in the present embodiment, the terminal has at least two front surfaces. At the moment, the terminal sends auxiliary information through the network equipment, so that the network equipment determines a front surface or a beam used by the subsequent uplink transmission of the terminal, or determines that the terminal performs new uplink beam scanning; that is, the terminal sends the auxiliary information to the network device, so that the network device can determine, based on the auxiliary information, a wavefront or a beam used by subsequent uplink transmission of the terminal, or determine that the terminal performs new uplink beam scanning.

In addition, specifically, the auxiliary information may include: identification information of an optimal reference signal required by uplink transmission or P-MPR values corresponding to one or more front surfaces of a terminal when an MPE event occurs. That is, the terminal may send the identification information of the optimal reference signal required for uplink transmission to the network device as the auxiliary information, or send the P-MPR value corresponding to one or more wavefront of the terminal to the network device as the auxiliary information.

Specifically, the identification information of the optimal reference signal required for uplink transmission may be a channel state information reference signal index (CRI) or a synchronization signal block index (SSBRI).

The optimal reference signal required for uplink transmission may refer to a reference signal with the highest uplink transmission power value. Therefore, the network equipment can determine the array surface with the optimal performance based on the optimal reference signal, so that the network equipment can select the array surface or the beam corresponding to the optimal reference signal required by the uplink transmission as the array surface or the beam used by the uplink transmission, and further, the uplink coverage loss caused by the MPE problem is reduced.

In addition, when an MPE event occurs, the terminal can also send the P-MPR value corresponding to one array surface or the P-MPR value corresponding to each array surface in a plurality of array surfaces to the network equipment.

It should be noted that the plurality of wavefront may be all the wavefronts of the terminal. In addition, when the auxiliary information includes a P-MPR value corresponding to one wavefront, the P-MPR value may be a P-MPR value of the wavefront where the MPE problem occurs, so that the network device can directly select another wavefront or beam for subsequent uplink transmission based on the P-MPR value of the wavefront.

And each array plane corresponds to one P-MPR value, so that the P-MPR report can accurately reflect the performance difference of different array planes of the terminal, the network equipment can know the P-MPR value specific to the specific array plane, the network equipment can select the transmission array plane based on the P-MPR value, and the array plane or the beam with the maximum beam intensity can be used as the array plane or the beam used by subsequent uplink transmission, thereby reducing the uplink coverage loss or reducing the uplink coverage loss caused by the MPE problem.

In addition, it should be noted that the uplink transmission may include a Physical Uplink Control Channel (PUCCH), a Physical Uplink Shared Channel (PUSCH), or a channel Sounding Reference Signal (SRS).

Step 102: and receiving indication information sent by the network equipment based on the auxiliary information.

Specifically, the indication information is used to indicate a front plane or a beam used by the terminal for subsequent uplink transmission, or indicate the terminal to perform new uplink beam scanning.

Specifically, after receiving the auxiliary information of the terminal, the network device can determine, based on the auxiliary information, a front plane or a beam used by the terminal for new uplink beam scanning or subsequent uplink transmission, and send the indication information to the terminal.

It should be noted that the terminal may indicate through the UL TCI architecture.

The performance difference of different transmission array surfaces of the terminal can be accurately reflected based on the auxiliary information, so that the high quality of the determined array surface or beam used by the subsequent uplink transmission of the terminal is ensured, and the uplink coverage loss caused by MPE problem is reduced.

Thus, in this embodiment, the auxiliary information is sent to the network device, and the auxiliary information includes identification information of an optimal reference signal required for uplink transmission or P-MPR values corresponding to one or more wavefront of the terminal when an MPE event occurs, and performance differences of different transmission wavefronts of the terminal can be accurately reflected based on the auxiliary information, so that the network device can accurately indicate, based on the auxiliary information, a wavefront or a beam used by subsequent uplink transmission of the terminal, or indicate the terminal to perform new uplink beam scanning, thereby reducing uplink coverage loss caused by the MPE problem.

Optionally, in this embodiment, when the auxiliary information includes P-MPR values corresponding to one or more front planes of the terminal, the auxiliary information may further include an MPE event; and/or Reference Signal Received Power (RSRP) corresponding to one or more of the wavefronts.

That is, when the terminal reports the P-MPR values corresponding to one or more wavefront surfaces to the network device, the terminal may also report the MPE event, report the RSRP corresponding to one or more wavefront surfaces, or report the MPE event and the RSRP corresponding to one or more wavefront surfaces, so that the network device can further refer to the above information to select a wavefront surface or a beam used for subsequent uplink transmission.

Optionally, the triggering condition of the MPE event may include that a P-MPR value greater than a preset backoff value exists within a preset time period; or aiming at any array surface, the RSRP estimated value of the uplink wave beam is smaller than a preset value.

Namely, when the P-MPR value is larger than the preset backspacing value in the preset time period or the RSRP estimated value aiming at the uplink beam of any array surface is smaller than the preset value, the MPE event can be considered to occur.

In addition, optionally, in this embodiment, the network device may control the terminal to report the auxiliary information, and the terminal may also report the auxiliary information autonomously, which will be described below.

Specifically, the auxiliary information includes first auxiliary information or second auxiliary information, and when the auxiliary information is sent to the network device, any one of the following manners may be included:

first, receiving notification information sent by a network device, and sending first auxiliary information to the network device according to the notification information.

Specifically, the notification information is used to notify the terminal to report the optimal reference signal required for uplink transmission, where the first auxiliary information includes identification information of the optimal reference signal required for uplink transmission.

Specifically, in this manner, the network device may configure a reference signal resource for the terminal through a high-level signaling, and configure notification information through the high-level signaling or L1 dynamic signaling to instruct the terminal to measure and report an optimal reference signal (CRI/SSBRI) for uplink transmission, where the high-level signaling includes L2 signaling or L3 signaling.

For example, the notification information of the higher layer signaling configuration may be as follows:

by the method, the network equipment triggers the terminal to send the auxiliary information, so that the network equipment informs the terminal of sending the auxiliary information when the auxiliary information needs to be acquired, and the terminal is prevented from carrying out invalid sending of the auxiliary information.

Specifically, the notification information is further configured to notify the terminal to report the RSRP after power backoff, where the first auxiliary information further includes the RSRP after power backoff. The RSRP may be L1-RSRP, so that the network device can assist in determining an optimal beam according to the RSRP after an MPE event reported by the terminal occurs.

In addition, specifically, before receiving the notification information sent by the network device, the terminal may also report capability information to the network device, where the capability information is used to indicate that the terminal has a capability of adding a power backoff value in the calculation of the optimal reference signal.

For the auxiliary information report controlled by the network equipment, the terminal with multiple array surfaces needs to perform capability report to inform the network equipment that the terminal has the capability of considering the power back-off value in the calculation of the optimal reference signal, so that the influence of the power back-off is considered by the optimal reference signal reported by the terminal, and the reliability of the optimal reference signal under the MPE problem is ensured.

In addition, specifically, before the terminal sends the first auxiliary information to the network device according to the notification information, it needs to use each array surface to perform RSRP measurement on the reference signal configured by the network device, so as to obtain the RSRP of the reference signal measured by each array surface; and then determining the reference signal with the highest uplink transmission power value according to the RSRP of the reference signal measured by each array surface and the P-MPR value of each array surface, and determining the reference signal with the highest transmission power value as the optimal reference signal required by uplink transmission.

That is, after the terminal receives the notification message, the terminal measures the quality of the downlink received signal according to the configuration of the network device, determines the optimal reference signal for uplink transmission according to the measurement result and the power backoff when the MPE problem is encountered, and finally reports the identification information (i.e., CRI/SSBRI) of the optimal reference signal to the network device to assist the network device in selecting the wavefront or beam for subsequent uplink transmission, and at this time, the network device can use the wavefront or beam corresponding to the optimal reference signal as the wavefront or beam for subsequent uplink transmission to reduce the uplink coverage loss caused by the MPE problem.

And secondly, when the terminal detects that the MPE event occurs, sending second auxiliary information to the network equipment. Specifically, the second auxiliary information includes P-MPR values corresponding to one or more wavefront of the terminal.

In this manner, when the terminal detects that an MPE event occurs, the terminal may determine a P-MPR value corresponding to one or more wavefront, and notify the network device of the P-MPR value corresponding to the one or more wavefront on a resource configured by the network device, so that the network device can determine and select a wavefront or a beam used by a subsequent uplink transmission of the terminal based on the P-MPR value corresponding to the one or more wavefront and indicate the wavefront or the beam to the terminal.

In addition, optionally, in this embodiment, when the second auxiliary information is sent to the network device, request information may also be sent to the network device, where the request information is used to trigger the network device to send at least one channel state information reference signal (CSI-RS for short) for beam scanning, where the at least one CSI-RS is associated with a front surface of the terminal in advance; and then the terminal measures the Reference Signal Received Power (RSRP) after power backoff corresponding to each CSI-RS, and determines the reference signal with the highest sending power value after power backoff as the optimal reference signal required by uplink transmission based on the measurement result.

As shown in fig. 7, a preset domain is newly added to the MAC CE, and the preset domain includes the request information; and the terminal sends the request information to the network equipment through the MAC CE.

Specifically, when a terminal with multiple transmission fronts detects MPE event occurrence according to a certain predefined threshold, the terminal determines P-MPR value based on the fronts or beams and informs the base station of the work based on the fronts or beams on the uplink transmission resources configured by the base stationRate back-off value, and P at this power back-off_CMAXAnd power headroom (abbreviated PH). In addition, as shown in fig. 7, at the same time, the terminal triggers the base station to transmit at least one CSI-RS by using a preset field (Pnew field) in which the bit width is 1 bit; the base station receives the report of the terminal, sends at least one CSI-RS to perform beam scanning, the terminal measures the L1-RSRP value of the CSI-RS and considers the P-MPR value on the beam corresponding to the power, selects the optimal reference signal and reports the corresponding beam index CRI to the base station, and the base station is assisted to select the array surface or the beam used for subsequent uplink (PUCCH/PUSCH/SRS) transmission and indicate the array surface or the beam to the terminal.

In addition, specifically, the second auxiliary information further includes identification information of an optimal reference signal required for uplink transmission.

A media access control (MAC CE) layer control unit (MAC CE) is added with a preset domain, and the preset domain is used for indicating the identification information of the optimal reference signal required by the uplink transmission; and the terminal transmits the second auxiliary information to the network equipment through the MAC CE.

Specifically, as shown in fig. 8, the MAC CE after the new preset domain is added, and the CRI/SSBRI domain in the MAC CE is the new preset domain, at this time, the optimal reference signal required for uplink transmission can be determined by setting the CRI/SSBRI value by setting the corresponding relationship between the CRI/SSBRI value and the beam or the array surface.

That is, if a terminal with multiple transmission fronts detects an MPE event according to a predefined threshold, the terminal determines a front/beam-based P-MPR value and notifies the network device of a front/beam-based power back-off value and a maximum output power (P) at the power back-off on an uplink transmission resource configured by the network device_CMAX) Power Headroom (PH), and optimal reference signal (CRI/SSBRI) required for uplink transmission, as shown in fig. 8, to assist the network device in selecting and indicating to the terminal a wavefront/beam used for subsequent uplink (PUCCH/PUSCH/SRS) transmission. Specifically, the optimal reference signal required for uplink transmission may refer to a candidate beam without the MPE problem.

The method realizes the sending mode that the terminal automatically sends the auxiliary information, so that the terminal reports the auxiliary information after the MPE event occurs, the network equipment can timely select the array surface or the wave beam used by the subsequent uplink transmission of the terminal, and the uplink coverage loss caused by the MPE problem is reduced.

Thus, the auxiliary information is transmitted by any mode.

Furthermore, optionally, in this embodiment, when the terminal sends the auxiliary information to the network device, any one of the following items may be included:

periodically sending auxiliary information to the network equipment;

transmitting the auxiliary information to the network equipment in a semi-persistent manner;

assistance information is transmitted aperiodically to the network device.

That is, the terminal may periodically, semi-continuously, or non-periodically transmit the auxiliary information, which is not specifically limited herein, so that flexibility of the auxiliary information transmission manner is ensured.

It should be noted that, when the terminal transmits the auxiliary information to the network device, the auxiliary information may be transmitted to the network device through a Physical Random Access Channel (PRACH), a PUCCH, or a PUSCH, and the method is not particularly limited herein.

Thus, the wavefront selection method provided in this embodiment sends the auxiliary information to the network device, where the auxiliary information includes identification information of an optimal reference signal required for uplink transmission or P-MPR values corresponding to one or more wavefronts of the terminal when an MPE event occurs, so that the auxiliary information can accurately reflect the performance difference of different transmission wavefronts of the terminal, and thus the network device can perform accurate wavefront or beam selection used in subsequent uplink transmission based on the auxiliary information, thereby reducing uplink coverage loss caused by the MPE problem.

As shown in fig. 2, a flowchart of steps of a wavefront selection method applied to a network device in the embodiment of the present application is shown, where the method includes:

step 201: and receiving the auxiliary information sent by the terminal.

Specifically, the auxiliary information includes: identification information of an optimal reference signal required by uplink transmission or P-MPR values corresponding to one or more front surfaces of a terminal when an MPE event occurs.

Specifically, the network device receives the auxiliary information sent by the terminal, where the auxiliary information may include identification information of an optimal reference signal required for uplink transmission, or include P-MPR values corresponding to one or more front planes of the terminal when an MPE event occurs.

It should be noted that, for specific description of the auxiliary information, reference may be made to relevant contents of the terminal side method embodiment, and details are not described herein again.

Step 202: and determining a front plane or a beam used by the terminal for new uplink beam scanning or subsequent uplink transmission according to the auxiliary information.

In this step, specifically, after the network device acquires the auxiliary information, the terminal may be determined to perform new uplink beam scanning according to the auxiliary information, that is, the terminal is controlled to perform new uplink beam scanning to reselect the wavefront or beam, or the wavefront or beam used by subsequent uplink transmission by the terminal is determined according to the auxiliary information, so as to implement selection of an optimal wavefront or beam, thereby reducing uplink coverage loss caused by the MPE problem.

Step 203: and sending the indication information to the terminal.

In this step, after determining that the terminal performs new uplink beam scanning or a wavefront or beam used by subsequent uplink transmission, the network device sends indication information to the terminal to indicate the wavefront or beam used by the subsequent uplink transmission of the terminal, or to indicate the terminal to perform new uplink beam scanning.

Thus, in this embodiment, by receiving the auxiliary information sent by the terminal, where the auxiliary information includes identification information of an optimal reference signal required for uplink transmission or P-MPR values corresponding to one or more wavefront of the terminal when an MPE event occurs, performance differences of different transmission wavefronts of the terminal can be accurately reflected based on the auxiliary information, so that the network device can perform accurate wavefront or beam selection used in subsequent uplink transmission based on the auxiliary information, thereby reducing uplink coverage loss caused by the MPE problem.

Optionally, in this embodiment, when the network device determines, according to the auxiliary information, a front plane or a beam used by the terminal for subsequent uplink transmission, any of the following manners may be used:

first, when the auxiliary information includes identification information of an optimal reference signal required for uplink transmission, a wavefront or a beam corresponding to the optimal reference signal required for uplink transmission is determined as a wavefront or a beam used by subsequent uplink transmission of the terminal.

That is, when the auxiliary information includes the identification information of the optimal reference signal required for uplink transmission, the network device may directly determine the wavefront or beam corresponding to the optimal reference signal as the wavefront or beam used by the terminal for subsequent uplink transmission, thereby ensuring that the determined wavefront or beam strength used by the terminal for subsequent uplink transmission is the highest beam strength, and avoiding uplink coverage loss caused by the MPE problem.

Secondly, when the auxiliary information includes the P-MPR values corresponding to the one or more wavefront of the terminal, determining a wavefront or a beam with the highest uplink transmission power value based on the P-MPR values corresponding to the one or more wavefront of the terminal, and determining the wavefront or the beam with the highest uplink transmission power value as a wavefront or a beam used by subsequent uplink transmission of the terminal.

Specifically, when the auxiliary information includes P-MPR values corresponding to one or more wavefront of the terminal, the terminal may determine, based on the P-MPR values corresponding to the one or more wavefront of the terminal, a wavefront or a beam with the highest uplink transmission power value from all wavefronts or beams of the terminal, that is, select a wavefront or a beam with the highest beam strength, and determine the wavefront or the beam as a wavefront or a beam used by subsequent uplink transmission of the terminal.

It should be noted that, if the auxiliary information further includes RSRP corresponding to the one or more front planes, the network device may further determine a front plane or a beam with the highest uplink transmission power value with reference to the RSRP corresponding to the one or more front planes. At this time, a difference between the RSRP and the P-MPR value of each wavefront may be calculated, and the wavefront or beam having the largest difference may be determined as the wavefront or beam having the highest uplink transmission power value.

Of course, if the RSRPs corresponding to all the configured array planes are the same, the network device does not receive the RSRPs corresponding to one or more array planes, and can also determine the array plane or beam with the highest uplink transmission power value, and at this time, the array plane or beam with the smallest P-MPR value may be determined as the array plane or beam with the highest uplink transmission power value.

Therefore, the front surface or the beam used by the terminal for subsequent uplink transmission can be accurately determined by any mode, and the uplink coverage loss caused by MPE problem is avoided.

Optionally, when the auxiliary information includes a P-MPR value corresponding to one or more preambles of the terminal, the auxiliary information further includes: MPE events; and/or reference signal received power RSRP corresponding to one or more of the array surfaces.

Further, triggering conditions for MPE events include: the P-MPR value is larger than a preset backspacing value in a preset time interval; or aiming at any array surface, the RSRP estimated value of the uplink wave beam is smaller than a preset value.

The uplink transmission includes PUCCH, PUSCH, or SRS.

It should be noted that, for the specific description of the above, reference may be made to the related contents of the terminal side method embodiment, and details are not described herein again.

Further, optionally, the assistance information comprises first assistance information or second assistance information; when the network device receives the auxiliary information sent by the terminal, any one of the following modes may be included:

first, notification information is sent to a terminal, and first auxiliary information sent by the terminal according to the notification information is received.

Specifically, the notification information is used to notify the terminal to report the optimal reference signal required for uplink transmission, and the first auxiliary information includes identification information of the optimal reference signal required for uplink transmission.

Specifically, the notification information is further configured to notify the terminal to report the RSRP after power backoff, where the first auxiliary information further includes the RSRP after power backoff.

In addition, specifically, before the network device sends the notification information to the terminal, the capability information sent by the terminal may be received, where the capability information is used to indicate that the terminal has a capability of adding the power backoff value in the calculation of the optimal reference signal.

And secondly, receiving the second auxiliary information transmitted by the terminal when the MPE event is detected.

Specifically, the second auxiliary information includes P-MPR values corresponding to one or more wavefront of the terminal.

In addition, optionally, when receiving the second auxiliary information sent by the terminal when detecting the occurrence of the MPE event, the network device may further receive request information sent by the terminal, where the request information is used to trigger the network device to send at least one CSI-RS for beam scanning, where the at least one CSI-RS is pre-associated with a front surface of the terminal; then, the network device sends the at least one CSI-RS for beam scanning based on the request information, so that the terminal can measure and compare the power backed RSRP value of each CSI-RS, further determines the reference signal with the highest sending power value as the optimal reference signal required by uplink transmission based on the measurement result, and sends the optimal reference signal required by the uplink transmission to the network device, and at the moment, the network device can determine the array surface and the beam for the uplink transmission based on the incidence relation between the at least one CSI-RS and the array surface of the terminal.

Specifically, a preset domain is newly added in the MAC CE, and the preset domain includes the request information; and the terminal sends the request information to the network equipment through the MAC CE.

In addition, a preset domain is added in the MAC CE, and the preset domain is used for indicating the identification information of the optimal reference signal required by the uplink transmission; and the network equipment receives the second auxiliary information transmitted by the terminal through the MAC CE.

In this way, the network device may control the terminal to transmit the auxiliary information or the terminal may autonomously transmit the auxiliary information when triggering the MPE event, and for the specific contents of the above two manners, reference may be made to the related contents of the terminal-side method embodiment, which is not described herein again.

In addition, optionally, the network device receives the auxiliary information sent by the terminal, where the auxiliary information includes any one of the following items:

receiving auxiliary information periodically sent by a terminal;

receiving auxiliary information transmitted by a terminal in a semi-persistent manner;

the receiving terminal aperiodically transmits the auxiliary information.

In addition, when the network device receives the auxiliary information transmitted by the terminal, the network device may also receive the auxiliary information transmitted by the terminal through the PRACH, the PUCCH, or the PUSCH.

It should be noted that, for a specific description of the specific receiving manner of the auxiliary information, reference may be made to relevant contents of the terminal side method embodiment, and details are not described herein again.

In the wavefront selection method provided in this embodiment, the network device receives the auxiliary information and selects a wavefront or a beam for subsequent uplink transmission by the terminal based on the auxiliary information, or determines that the terminal performs new uplink beam scanning, and the performance of the terminal wavefront can be reflected based on the auxiliary information, so that after the terminal uses the wavefront or the beam selected by the network device or performs new uplink beam scanning, uplink coverage loss caused by an MPE problem is avoided.

The present application will be specifically described below with reference to specific examples.

In a first embodiment, a method for notifying a terminal to report auxiliary information by a network device is as follows:

assuming that the terminal has two array planes (panel), which are a first array plane and a second array plane respectively, the terminal reports the capacity and informs the network device that the terminal considers the power backoff in the calculation of the optimal reference signal; in addition, the network equipment configures two channel state information reference signal (CSI-RS) resources for the terminal, wherein the two CSI-RS resources are represented as a first CSI-RS resource and a second CSI-RS resource, and the terminal is configured to measure the downlink first CSI-RS resource through the first array and measure the second CSI-RS resource through the second array. The configuration information is:

and then, the terminal measures according to the configuration of the network equipment to obtain a first RSRP of a measured value on the first array and a second RSRP of a measured value on the second array. And the terminal estimates uplink sending power values of the first array surface and the second array surface according to the first RSRP and the second RSRP. At this time, it is assumed that the terminal detects that there is a human body occlusion in the first array direction, and determines the power backoff value to be the first P-MPR, and similarly, the terminal determines the power backoff value in the second array direction to be the second P-MPR (if there is no occlusion, this value is 0). The terminal then compares the magnitude between the value of the first RSRP-first P-MPR and the value of the second RSRP-second P-MPR. And if the first RSRP-first P-MPR is less than the second RSRP-second P-MPR, the terminal determines that the beam intensity of the uplink signal sent by the second array surface is greater than the first array surface, and the terminal reports the beam intensity to a second CSI-RS resource corresponding to the network equipment, so that the terminal is indicated to use the corresponding beam or array surface to make the uplink transmission performance optimal.

Then, after receiving the instruction of the terminal, the network device instructs the terminal to transmit the PUSCH with the reception beam or the front including the second CSI-RS through the UL TCI-state in the subsequent uplink PUSCH transmission. And after receiving the indication of the network equipment, the terminal transmits the PUSCH by using the corresponding wave beam on the array surface.

The second embodiment is directed to a method for autonomously reporting auxiliary information after an MPE event occurs to a terminal:

assume that the terminal has 2 panels, denoted panel-ID0 and panel-ID 1. The network device configures a PUCCH resource for transmitting the MPE event to the terminal through RRC signaling. While the network device configures the terminal with slot m and timing offset for transmitting this PUCCH. And in the nth time slot, the terminal detects that the P-MPR value on the panel-ID0 exceeds a threshold value predefined by the system, namely, an MPE event occurs, and the terminal transmits the MPE event and the P-MPR0 on the panel-ID0 on PUCCH resources configured by the system. The indication to send the Panel may be an explicit Panel-ID indication or may be implicitly indicated by an uplink/downlink reference signal.

After the network equipment receives and demodulates the PUCCH, the situation that MPE problem occurs on the terminal panel-ID0 is known. At this time, the network device instructs the terminal to transmit upstream data with the panel-ID1 in the subsequent upstream data transmission. In the subsequent uplink data transmission process, the terminal uses the panel-IDl indicated by the network equipment to carry out uplink signal transmission. Of course, if the terminal does not receive the network device indication, the terminal defaults to continue the upstream data transmission with the panel-ID 0.

The third embodiment is directed to a method for autonomously reporting auxiliary information after an MPE event occurs to a terminal:

assume that the terminal has 2 panels, denoted panel-ID0 and panel-ID 1. And the network equipment instructs the terminal to report the P-MPR value through MAC CE signaling. Meanwhile, the network device indicates the PUSCH resources used by the terminal for transmitting the P-MPR value through L1 dynamic signaling. And in the nth time slot, the terminal detects that any one P-MPR value of the panel-ID0 or the panel-ID1 exceeds a threshold value predefined by the system, the terminal transmits the P-MPR0 on the panel-ID0 and the P-MPR1 on the panel-ID1 on PUSCH resources configured by the system, and the indication for transmitting the panel can be an explicit panel-ID indication or an implicit indication through an uplink/downlink reference signal.

After the network device receives and demodulates the PUSCH, if the P-MPR0> the value of P-MPR1, it indicates that the power backoff of the signal transmitted by the panel-ID1 is small, and assuming that the maximum transmission power of the two panels is the same, the network device determines that the beam strength of the uplink signal transmitted by the panel-ID1 is greater than that of the panel-ID 0. After receiving the instruction from the terminal, the network device instructs the terminal to transmit an uplink signal using panel-ID1 in the subsequent uplink PUSCH/PUCCH transmission via UL TCI-state.

The fourth embodiment:

assume that the terminal has 2 panels, denoted panel-ID1 and panel-ID2, respectively. Panel-ID1 is associated with CSI-RS1 and CSI-RS2, and Panel-ID2 is associated with CSI-RS3 and CSI-RS 4. The association may be pre-established by beam scanning. In the nth time slot, the terminal is supposed to be scheduled for uplink PUSAnd CH transmission, and PUSCH is transmitted by using a beam for receiving the CSI-RS 1. Meanwhile, when the terminal detects that the panel-ID1 encounters MPE problem and performs power backoff, the power backoff value is P _ MPR1 and exceeds the threshold configured by the system, the terminal sends MPE report to the base station, and adopts PHR MAC-CE reported by the power headroom shown in FIG. 7, wherein the bit width is P MAC-CE reported by 1 bit_newThe field is used to trigger the network device to send the CSI-RS.

Then, after receiving the report of the terminal, the network equipment sends the CSI-RS1, the CSI-RS2, the CSI-RS3 and the CSI-RS4 to perform beam scanning, and the terminal measures and compares the L1-RSRP values of the CSI-RSs and considers the influence of power backoff. Such as terminal comparison L1-RSRP_1,1–P_MPR1,L1-RSRP_1,2–P_MPR2,L1-RSRP_2,3–P_MPR2,L1-RSRP_2,4-P _ MPR4, wherein L1-RSRP_i，jAn L1-RSRP value representing the jth CSI-RS on the panel-ID i; terminal discovery L1-RSRP_2,4P _ MPR4 is maximum, the terminal considers the beam for receiving the 4 th CSI-RS on panel-ID2 as the optimal beam for uplink transmission. The terminal reports the CRI-RS4 to the network equipment, and the network equipment receives the report of the terminal and instructs the terminal to transmit PUSCH by using the beam for receiving the 4 th CSI-RS on the panel-ID 2.

In a fifth embodiment, a method for notifying a terminal to report auxiliary information by a network device is as follows:

assume that the terminal has 2 panels, denoted panel-ID1 and panel-ID2, respectively. Panel-ID1 is associated with CSI-RS1 and CSI-RS2, and Panel-ID2 is associated with CSI-RS3 and CSI-RS4, and the association relationship can be established in advance through beam scanning. In the nth slot, the terminal is supposed to be scheduled for uplink PUSCH transmission, and the PUSCH is transmitted by using a beam for receiving CSI-RS 1. Meanwhile, when the terminal detects that the panel-ID1 encounters MPE problem and performs power backoff, the power backoff value is P _ MPR1 and exceeds the threshold configured by the system, the terminal sends MPE report to the network equipment, and a media access control element (PHR MAC-CE) reported by the power headroom shown in FIG. 8 is adopted. After the network equipment receives the report of the terminal, the network equipment sends CSI-RS1, CSI-RS2, CSI-RS3 and CSI-RS4 to perform beam scanning, and the terminal measures and compares L1-RSRP values of all CSI-RSs and considers the influence of power backoff, such as terminal comparison L1-RSRP_1,1–P_MPR1,L1-RSRP_1,2–P_MPR2,L1-RSRP_2,3–P_MPR2,L1-RSRP_2,4-P _ MPR4, wherein L1-RSRP_i，jRepresenting the L1-RSRP value of the j CSI-RS on the panel-ID i, the terminal finds L1-RSRP_1，1–P_MPR1,L1-RSRP_1,2P _ MPR2 is largest and second largest, denoted L1-RSRP_new,1And L1-RSRP_new,2. Terminal report L1-RSRP_new,1+CRI1，L1-RSRP_new,2+ CRI2 to the network device. The network device receives the report of the terminal, selects a beam, for example, a beam for receiving the CSI-RS1 as an optimal beam for uplink transmission, and instructs the terminal to transmit the PUSCH by using a beam for receiving the 1 st CSI-RS on the panel-ID 1.

The sixth embodiment is directed to a method for a terminal to autonomously report auxiliary information after an MPE event occurs:

assume that the terminal has 2 panels, denoted panel-ID0 and panel-ID 1. And in the nth time slot, the terminal detects that the MPE value of the beam transmitted on the panel-ID0 exceeds the threshold value specified by the environmental regulatory department, and the terminal performs power backoff on the beam on the panel-ID 0. Assuming that the power backoff value P-MPR is 6dB and exceeds a predetermined threshold (e.g. 3dB) of the network, the terminal triggers MPE report to transmit the MAC CE shown in fig. 8 to the network device on the uplink transmission resource already allocated by the network device. In the MAC CE shown in fig. 8, the MPE field is set to 01(2 bits), indicating that the absolute value of the actually used P-MPR is 6 dB; meanwhile, the CRI/SSBRI field has a value of 1, which indicates that beam 1 on panel-ID1 is used as a candidate beam without power backoff for subsequent uplink transmission. After receiving the instruction of the terminal, the network equipment instructs the terminal to transmit the PUSCH by using the reception beam/panel of the CSI-RS1 through the UL TCI-state in the subsequent uplink PUSCH transmission. And after receiving the instruction of the base station, the terminal transmits the PUSCH by using the corresponding beam on the panel-ID 1.

Thus, the selection of the front or beam used for uplink transmission is realized by any of the above embodiments.

Fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present application, including a memory 320, a transceiver 300, and a processor 310.

Wherein in fig. 3, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 310, and various circuits, represented by memory 320, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 300 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 310 is responsible for managing the bus architecture and general processing, and the memory 320 may store data used by the processor 310 in performing operations.

The processor 310 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

A memory 320 for storing a computer program; a transceiver 300 for transceiving data under the control of the processor; a processor 310 for reading the computer program in the memory and performing the following operations:

Optionally, when the auxiliary information includes a P-MPR value corresponding to one or more fronts of the terminal, the auxiliary information further includes:

MPE events; and/or reference signal received power RSRP corresponding to one or more of the array surfaces.

Optionally, the auxiliary information includes first auxiliary information or second auxiliary information; the sending the auxiliary information to the network device includes:

receiving notification information sent by the network equipment, and sending the first auxiliary information to the network equipment according to the notification information, wherein the notification information is used for notifying a terminal to report an optimal reference signal required by uplink transmission, and the first auxiliary information comprises identification information of the optimal reference signal required by the uplink transmission; or,

and when the terminal detects that the MPE event occurs, sending the second auxiliary information to the network equipment, wherein the second auxiliary information comprises P-MPR values corresponding to one or more front surfaces of the terminal.

Optionally, when sending the second auxiliary information to the network device, the method further includes:

sending request information to the network equipment, wherein the request information is used for triggering the network equipment to send at least one channel state information reference signal (CSI-RS) for beam scanning, and the at least one CSI-RS is pre-associated with a terminal array; and measuring the Reference Signal Received Power (RSRP) after power backoff corresponding to each CSI-RS, and determining the reference signal with the highest sending power value after power backoff as the optimal reference signal required by uplink transmission based on the measurement result.

Optionally, a preset domain is newly added in the MAC CE, and the preset domain includes the request information; and the terminal sends the request information to the network equipment through the MAC CE.

Optionally, the second auxiliary information further includes identification information of an optimal reference signal required for uplink transmission.

Optionally, a preset domain is newly added in a MAC CE, where the preset domain is used to indicate identification information of an optimal reference signal required for uplink transmission; and the terminal sends the second auxiliary information to the network equipment through the MAC CE.

Optionally, the notification information is further configured to notify the terminal to report the power backed-off RSRP, and the first auxiliary information further includes the power backed-off RSRP.

Optionally, before receiving the notification information sent by the network device, the method further includes:

and reporting capability information to the network equipment, wherein the capability information is used for indicating that the terminal has the capability of adding a power back-off value in the calculation of the optimal reference signal.

Optionally, before sending the first auxiliary information to the network device according to the notification information, the method further includes:

using each array to measure the RSRP of the reference signals configured by the network equipment to obtain the RSRP of the reference signals measured by each array; and determining the reference signal with the highest uplink transmission power value according to the RSRP of the reference signal measured by each array surface and the P-MPR value of each array surface, and determining the reference signal with the highest transmission power value as the optimal reference signal required by the uplink transmission.

Optionally, the sending the auxiliary information to the network device includes any one of:

periodically sending auxiliary information to the network device;

transmitting auxiliary information to the network device semi-persistently;

transmitting assistance information aperiodically to the network device.

Optionally, the sending the auxiliary information to the network device includes:

and sending the auxiliary information to the network equipment through a Physical Random Access Channel (PRACH), a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH).

Optionally, the triggering condition of the MPE event includes:

the P-MPR value existing in the preset time interval is larger than a preset backspacing value; or aiming at any array surface, the RSRP estimated value of the uplink wave beam is smaller than a preset value.

Optionally, the uplink transmission includes a PUCCH, a PUSCH, or a channel sounding reference signal SRS.

It should be noted that, in the above embodiments, all the method steps of the terminal-side method embodiment can be implemented and the same technical effect can be achieved, and details are not described herein again.

Fig. 4 is a schematic structural diagram of a network device according to an embodiment of the present application, and includes a memory 420, a transceiver 400, and a processor 410.

Where in fig. 4, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 410 and various circuits of memory represented by memory 420 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 400 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 410 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 410 in performing operations.

The processor 410 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

A memory 420 for storing a computer program; a transceiver 400 for transceiving data under the control of the processor; a processor 410 for reading the computer program in the memory and performing the following operations:

Optionally, the auxiliary information includes first auxiliary information or second auxiliary information; the auxiliary information sent by the receiving terminal comprises:

sending notification information to the terminal, and receiving the first auxiliary information sent by the terminal according to the notification information, wherein the notification information is used for notifying the terminal to report an optimal reference signal required by uplink transmission, and the first auxiliary information includes identification information of the optimal reference signal required by the uplink transmission; or,

and receiving the second auxiliary information sent by the terminal when the MPE event is detected, wherein the second auxiliary information comprises P-MPR values corresponding to one or more front planes of the terminal.

Optionally, when the receiving the second auxiliary information sent by the terminal when detecting the occurrence of the MPE event, the method further includes:

receiving request information sent by the terminal, wherein the request information is used for triggering the network equipment to send at least one channel state information reference signal (CSI-RS) for beam scanning, and the at least one CSI-RS is pre-associated with a terminal array; transmitting the at least one CSI-RS for beam scanning based on the request information.

Optionally, a preset domain is newly added in the MAC CE, and the preset domain includes the request information; and the network equipment receives the request information sent by the terminal through the MAC CE.

Optionally, a preset domain is newly added in a MAC CE, where the preset domain is used to indicate identification information of an optimal reference signal required for uplink transmission; and the network equipment receives the second auxiliary information sent by the terminal through the MAC CE.

Optionally, before sending the notification information to the terminal, the method further includes:

and receiving capability information sent by the terminal, wherein the capability information is used for indicating that the terminal has the capability of adding a power back-off value in the calculation of the optimal reference signal.

Optionally, the auxiliary information sent by the receiving terminal includes any one of the following items:

receiving auxiliary information periodically sent by the terminal;

receiving auxiliary information transmitted by the terminal in a semi-persistent manner;

and receiving auxiliary information which is transmitted by the terminal in a non-periodic manner.

Optionally, the receiving the auxiliary information sent by the terminal includes:

and receiving the auxiliary information sent by the terminal through a Physical Random Access Channel (PRACH), a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH).

Optionally, determining a front plane or a beam used by subsequent uplink transmission of the terminal according to the auxiliary information includes:

when the auxiliary information comprises identification information of an optimal reference signal required by uplink transmission, determining a front surface or a beam corresponding to the optimal reference signal required by the uplink transmission as a front surface or a beam used by subsequent uplink transmission of the terminal; or,

when the auxiliary information includes the P-MPR values corresponding to the one or more wavefront of the terminal, determining a wavefront or a beam with the highest uplink transmission power value based on the P-MPR values corresponding to the one or more wavefront of the terminal, and determining the wavefront or the beam with the highest uplink transmission power value as a wavefront or a beam used by subsequent uplink transmission of the terminal.

Optionally, the triggering condition of the MPE event includes:

the P-MPR value is larger than a preset backspacing value in a preset time interval; or aiming at any array surface, the RSRP estimated value of the uplink wave beam is smaller than a preset value.

It should be noted that, in the foregoing embodiment, all the method steps of the network device side method embodiment can be implemented, and the same technical effect can be achieved, and details are not described herein again.

Fig. 5 is a block diagram of a wavefront selection apparatus according to an embodiment of the present application, where the apparatus includes:

a sending module 501, configured to send auxiliary information to a network device, where the auxiliary information includes: identification information of an optimal reference signal required by uplink transmission or maximum power back-off P-MPR values based on one or more wavefront(s) corresponding to the terminal when the MPE event occurs.

A receiving module 502, configured to receive indication information sent by the network device based on the auxiliary information, where the indication information is used to indicate a front or a beam used by the terminal for subsequent uplink transmission, or indicate the terminal to perform new uplink beam scanning.

Optionally, when the auxiliary information includes a P-MPR value corresponding to one or more fronts of the terminal, the auxiliary information further includes: MPE events; and/or reference signal received power RSRP corresponding to one or more of the array surfaces.

Optionally, the auxiliary information includes first auxiliary information or second auxiliary information; the sending module comprises:

a first sending unit, configured to receive notification information sent by the network device, and send the first auxiliary information to the network device according to the notification information, where the notification information is used to notify a terminal to report an optimal reference signal required for uplink transmission, and the first auxiliary information includes identification information of the optimal reference signal required for uplink transmission; or,

a second sending unit, configured to send the second auxiliary information to the network device when the terminal detects that an MPE event occurs, where the second auxiliary information includes P-MPR values corresponding to one or more front planes of the terminal.

and a reporting unit, configured to report capability information to the network device, where the capability information is used to indicate that the terminal has a capability of adding a power backoff value in calculation of an optimal reference signal.

a determining unit, configured to perform RSRP measurement on the reference signal configured by the network device using each array, to obtain RSRP of the reference signal measured by each array; and determining the reference signal with the highest uplink transmission power value according to the RSRP of the reference signal measured by each array surface and the P-MPR value of each array surface, and determining the reference signal with the highest transmission power value as the optimal reference signal required by the uplink transmission.

Optionally, the sending module is configured to perform any one of the following:

periodically sending auxiliary information to the network device;

transmitting auxiliary information to the network device semi-persistently;

transmitting assistance information aperiodically to the network device.

Optionally, the sending module is configured to send the auxiliary information to the network device through a physical random access channel PRACH, a physical uplink control channel PUCCH, or a physical uplink shared channel PUSCH.

Optionally, the triggering condition of the MPE event includes: the P-MPR value is larger than a preset backspacing value in a preset time interval; or aiming at any array surface, the RSRP estimated value of the uplink wave beam is smaller than a preset value.

Fig. 6 is a block diagram of a wavefront selection apparatus according to an embodiment of the present application, where the apparatus includes:

a receiving module 601, configured to receive auxiliary information sent by a terminal, where the auxiliary information includes: identification information of an optimal reference signal required by uplink transmission or maximum power back-off P-MPR values based on one or more array planes corresponding to one or more array planes of a terminal when a maximum power radiation MPE event occurs;

a determining module 602, configured to determine, according to the auxiliary information, a front plane or a beam used by the terminal for new uplink beam scanning or subsequent uplink transmission;

a sending module 603, configured to send indication information to the terminal, where the indication information is used to indicate a wavefront or a beam used by subsequent uplink transmission of the terminal, or indicate the terminal to perform new uplink beam scanning.

Optionally, the auxiliary information includes first auxiliary information or second auxiliary information; the receiving module includes:

a first receiving unit, configured to send notification information to the terminal, and receive the first auxiliary information sent by the terminal according to the notification information, where the notification information is used to notify the terminal to report an optimal reference signal required for uplink transmission, and the first auxiliary information includes identification information of the optimal reference signal required for uplink transmission; or,

a second receiving unit, configured to receive the second auxiliary information sent by the terminal when detecting that an MPE event occurs, where the second auxiliary information includes P-MPR values corresponding to one or more front planes of the terminal.

and a third receiving unit, configured to receive capability information sent by the terminal, where the capability information is used to indicate that the terminal has a capability of adding a power backoff value in the calculation of the optimal reference signal.

Optionally, the receiving module is configured to perform any one of the following:

receiving auxiliary information periodically sent by the terminal;

Optionally, the receiving module is configured to receive the auxiliary information sent by the terminal through a physical random access channel PRACH, a physical uplink control channel PUCCH, or a physical uplink shared channel PUSCH.

Optionally, the determining module is configured to:

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

It should be noted that the apparatus provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

On the other hand, the embodiment of the present application further provides a processor-readable storage medium, where a computer program is stored, and the computer program is used to enable the processor to execute the method described in the foregoing embodiment.

The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

As seen from the above embodiments, a processor-readable storage medium stores a computer program for causing the processor to execute the above wavefront selection method.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A wavefront selection method, comprising:

2. The wavefront selection method of claim 1, wherein when the auxiliary information includes P-MPR values corresponding to one or more wavefronts of the terminal, the auxiliary information further includes:

MPE events; and/or the presence of a gas in the atmosphere,

and the reference signal received power RSRP corresponding to one or more array surfaces.

3. The wavefront selection method according to claim 1, characterized in that the auxiliary information includes first auxiliary information or second auxiliary information; the sending the auxiliary information to the network device includes:

and when the terminal detects that the MPE event occurs, the second auxiliary information is sent to the network equipment, wherein the second auxiliary information comprises P-MPR values corresponding to one or more array surfaces of the terminal.

4. The method of selecting a wavefront of claim 3, wherein the sending the second auxiliary information to the network device further comprises:

sending request information to the network equipment, wherein the request information is used for triggering the network equipment to send at least one channel state information reference signal (CSI-RS) for beam scanning, and the at least one CSI-RS is pre-associated with a terminal array;

and measuring the Reference Signal Received Power (RSRP) after power backoff corresponding to each CSI-RS, and determining the reference signal with the highest sending power value after power backoff as the optimal reference signal required by uplink transmission based on the measurement result.

5. The method of claim 4, wherein a preset field is added to the MAC CE, and the preset field contains the request information;

and the terminal sends the request information to the network equipment through the MAC CE.

6. The method of claim 3 or 4, wherein the second auxiliary information further includes identification information of an optimal reference signal required for the uplink transmission.

7. The method of selecting a wavefront according to claim 6, wherein a preset field is newly added in a MAC CE, and the preset field is used to indicate the identification information of the optimal reference signal required for the uplink transmission;

and the terminal sends the second auxiliary information to the network equipment through the MAC CE.

8. The method for selecting a wavefront according to claim 3, wherein the notification information is further configured to notify the terminal to report a power-backed RSRP, and the first auxiliary information further includes the power-backed RSRP.

9. The method for selecting a wavefront according to claim 3, wherein before receiving the notification information sent by the network device, the method further comprises:

10. The method of claim 1 or 3, wherein before sending the first auxiliary information to the network device according to the notification information, the method further comprises:

using each array to measure the RSRP of the reference signals configured by the network equipment to obtain the RSRP of the reference signals measured by each array;

and determining the reference signal with the highest uplink transmission power value according to the RSRP of the reference signal measured by each array surface and the P-MPR value of each array surface, and determining the reference signal with the highest transmission power value as the optimal reference signal required by the uplink transmission.

11. The method of any of claims 1 to 5, wherein the sending of the auxiliary information to the network device comprises any of:

periodically sending auxiliary information to the network device;

transmitting auxiliary information to the network device semi-persistently;

transmitting assistance information aperiodically to the network device.

12. The method of any of claims 1 to 5, wherein said sending of auxiliary information to a network device comprises:

13. The method of wavefront selection according to claim 1, wherein the triggering conditions of the MPE event include:

the P-MPR value is larger than a preset backspacing value in a preset time interval; or,

aiming at any array surface, the RSRP estimated value of the uplink wave beam is smaller than a preset value.

14. The method of claim 1, wherein the uplink transmission comprises a PUCCH, a PUSCH, or a channel sounding reference signal, SRS.

15. A wavefront selection method, comprising:

16. The wavefront selection method of claim 15, wherein when the auxiliary information includes P-MPR values corresponding to one or more wavefronts of the terminal, the auxiliary information further includes:

MPE events; and/or the presence of a gas in the gas,

17. The wavefront selection method of claim 15, wherein the auxiliary information includes first auxiliary information or second auxiliary information; the auxiliary information sent by the receiving terminal comprises:

18. The method for selecting a wavefront according to claim 17, wherein the receiving the second auxiliary information sent by the terminal when detecting the MPE event further comprises:

receiving request information sent by the terminal, wherein the request information is used for triggering the network equipment to send at least one channel state information reference signal (CSI-RS) for beam scanning, and the at least one CSI-RS is pre-associated with the array surface of the terminal;

transmitting the at least one CSI-RS for beam scanning based on the request information.

19. The method of claim 18, wherein a preset field is added to the MAC CE, and the preset field includes the request information;

and the network equipment receives the request information sent by the terminal through the MAC CE.

20. The method for selecting a wavefront according to claim 17 or 18, wherein the second auxiliary information further includes identification information of an optimal reference signal required for the uplink transmission.

21. The method of selecting a wavefront according to claim 20, wherein a preset field is newly added to a MAC CE, and the preset field is used to indicate identification information of an optimal reference signal required for the uplink transmission;

and the network equipment receives the second auxiliary information sent by the terminal through the MAC CE.

22. The method of selecting a wavefront of claim 17, wherein the notification information is further configured to notify the terminal to report a power backed-off RSRP, and the first auxiliary information further includes the power backed-off RSRP.

23. The method for selecting a wavefront as set forth in claim 17, wherein before sending the notification information to the terminal, the method further comprises:

24. The method of any of claims 15 to 19, wherein the auxiliary information sent by the receiving terminal includes any of the following items:

receiving auxiliary information periodically sent by the terminal;

25. The method of any of claims 15 to 19, wherein the receiving the auxiliary information sent by the terminal comprises:

26. The method of selecting a wavefront according to claim 15, wherein determining a wavefront or a beam used by the terminal for subsequent uplink transmission according to the auxiliary information comprises:

27. The method of wavefront selection according to claim 15, wherein the MPE event trigger conditions include:

28. The method of wavefront selection according to claim 15, wherein the uplink transmission comprises PUCCH, PUSCH, or channel sounding reference signal, SRS.

29. A terminal, comprising a memory, a transceiver, a processor:

30. A network device comprising a memory, a transceiver, a processor:

31. A wavefront selection apparatus, comprising:

a sending module, configured to send auxiliary information to a network device, where the auxiliary information includes: identification information of an optimal reference signal required by uplink transmission or maximum power back-off P-MPR values based on one or more array planes corresponding to one or more array planes of a terminal when a maximum power radiation MPE event occurs;

32. A wavefront selection apparatus, comprising:

33. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any of claims 1 to 14 or to perform the method of any of claims 15 to 28.