WO2024031573A1

WO2024031573A1 - Communication method, terminal device, and network device

Info

Publication number: WO2024031573A1
Application number: PCT/CN2022/111913
Authority: WO
Inventors: 崔胜江
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2024-02-15

Abstract

The present application relates to a communication method, a terminal device, and a network device. The method comprises: a terminal device receives first information, wherein the first information is used for the terminal device to determine to transmit a physical random access channel (PRACH) on the basis of enhanced transmission power.

Description

Communication method, terminal equipment and network equipment

Technical field

The present application relates to the field of communication, and more specifically, to a communication method, terminal equipment and network equipment.

Background technique

Coverage is one of the key factors that operators consider when commercializing cellular communication networks. In some research projects, PUSCH (Physical Uplink Shared CHannel), PUCCH (Physical Uplink Control Channel, Physical Uplink Control) Coverage of CHannel) and Msg3 (Message 3) has been expanded. However, how to improve the coverage performance of PRACH (Physical Random Access CHannel) and reduce access delay has become a problem that needs to be solved.

Contents of the invention

Embodiments of the present application provide a communication method, terminal equipment, and network equipment.

The embodiment of the present application provides a communication method, including:

The terminal equipment receives first information; wherein the first information is used by the terminal equipment to determine to transmit the physical random access channel PRACH based on enhanced transmission power.

The network device sends first information; wherein the first information is used by the terminal device to determine to send the physical random access channel PRACH based on enhanced transmission power.

An embodiment of the present application provides a terminal device, including:

The first communication unit is configured to receive first information; wherein the first information is used by the terminal device to determine to send the physical random access channel PRACH based on enhanced transmission power.

This embodiment of the present application provides a network device, including:

The second communication unit is configured to send first information; wherein the first information is used by the terminal device to determine to send the physical random access channel PRACH based on enhanced transmission power.

An embodiment of the present application provides a terminal device, including a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer program stored in the memory, so that the terminal device performs the above communication method.

An embodiment of the present application provides a network device, including a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory, so that the network device performs the above communication method.

An embodiment of the present application provides a chip for implementing the above communication method. Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned communication method.

Embodiments of the present application provide a computer-readable storage medium for storing a computer program. When the computer program is run by a device, it causes the device to perform the above communication method.

An embodiment of the present application provides a computer program product, which includes computer program instructions, and the computer program instructions cause the computer to execute the above communication method.

An embodiment of the present application provides a computer program that, when run on a computer, causes the computer to perform the above communication method.

An embodiment of the present application provides a communication system, including: a terminal device for performing the above communication method; and a network device for performing the above communication method.

In this embodiment of the present application, the terminal device receives the first information, through which it can be determined to use enhanced transmission power to transmit the PRACH. In this way, PRACH can be transmitted with greater transmission power, thereby improving PRACH coverage, reducing the number of PRACH transmissions to reduce access delay, and improving PRACH transmission performance.

Description of drawings

Figure 1 is a schematic diagram of an application scenario according to an embodiment of the present application.

Figure 2 is a schematic diagram of a time domain configuration of PRACH resources.

Figure 3 is a schematic diagram of resource configuration in the PRACH frequency domain.

Figure 4 is a schematic diagram of PRACH power control.

Figure 5 is a schematic flow chart of a communication method according to an embodiment of the present application.

Figure 6 is a schematic flow chart of a communication method according to another embodiment of the present application.

Figure 7 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Figure 8 is a schematic block diagram of a terminal device according to another embodiment of the present application.

Figure 9 is a schematic block diagram of a network device according to an embodiment of the present application.

Figure 10 is a schematic block diagram of a communication device according to an embodiment of the present application.

Figure 11 is a schematic block diagram of a chip according to an embodiment of the present application.

Figure 12 is a schematic block diagram of a communication system according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), wireless fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application can also be applied to these communication systems.

In an implementation manner, the communication system in the embodiment of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA)Network scene.

In one implementation, the communication system in the embodiment of the present application can be applied to unlicensed spectrum, where the unlicensed spectrum can also be considered as shared spectrum; or, the communication system in the embodiment of the present application can also be applied to licensed spectrum , among which, licensed spectrum can also be considered as non-shared spectrum.

The embodiments of this application describe various embodiments in combination with network equipment and terminal equipment. The terminal equipment may also be called user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.

The terminal device can be a station (ST) in the WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, or a personal digital processing unit. (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or in the future Terminal equipment in the evolved Public Land Mobile Network (PLMN) network, etc.

In the embodiment of this application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites). superior).

In the embodiment of this application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, or an augmented reality (Augmented Reality, AR) terminal. Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home, etc.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones. Use, such as various types of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In the embodiment of this application, the network device may be a device used to communicate with mobile devices. The network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA. , or it can be a base station (NodeB, NB) in WCDMA, or an evolutionary base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network network equipment (gNB) or network equipment in the future evolved PLMN network or network equipment in the NTN network, etc.

As an example and not a limitation, in the embodiment of the present application, the network device may have mobile characteristics, for example, the network device may be a mobile device. Optionally, the network device can be a satellite or balloon station. For example, the satellite can be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite ) satellite, etc. Optionally, the network device may also be a base station installed on land, water, etc.

In this embodiment of the present application, network equipment can provide services for a cell, and terminal equipment communicates with the network equipment through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell. The cell can be a network equipment ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell). The small cell here can include: urban cell (Metro cell), micro cell (Micro cell), pico cell ( Pico cell), femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission services.

Figure 1 illustrates a communication system 100. The communication system includes a network device 110 and two terminal devices 120. In one implementation, the communication system 100 may include multiple network devices 110 , and the coverage of each network device 110 may include other numbers of terminal devices 120 , which is not limited in this embodiment of the present application.

In one implementation, the communication system 100 may also include other network entities such as Mobility Management Entity (MME), Access and Mobility Management Function (AMF), etc. This application implements This example does not limit this.

Among them, network equipment may include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks used to communicate with access network equipment. The access network equipment can be a long-term evolution (long-term evolution, LTE) system, a next-generation (mobile communication system) (next radio, NR) system or authorized auxiliary access long-term evolution (LAA- Evolutionary base station (evolutional node B, abbreviated as eNB or e-NodeB) macro base station, micro base station (also known as "small base station"), pico base station, access point (access point, AP), Transmission point (TP) or new generation base station (new generation Node B, gNodeB), etc.

It should be understood that in the embodiments of this application, devices with communication functions in the network/system may be called communication devices. Taking the communication system shown in Figure 1 as an example, the communication equipment may include network equipment and terminal equipment with communication functions. The network equipment and terminal equipment may be specific equipment in the embodiments of the present application, which will not be described again here; the communication equipment also It may include other devices in the communication system, such as network controllers, mobility management entities and other network entities, which are not limited in the embodiments of this application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship that describes related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and they exist alone. B these three situations. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

It should be understood that the "instruction" mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation.

In the description of the embodiments of this application, the term "correspondence" can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed, configuration and being. Configuration and other relationships.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following related technologies can be optionally combined with the technical solutions of the embodiments of the present application, and they all belong to the embodiments of the present application. protected range.

1. PRACH (Physical Random Access CHannel) channel design in NR (New Radio): NR supports 4 long sequence preamble formats (both lengths are 839), of which

format

0 , 1 follows the LTE format, format 0 is used for typical macro cell coverage, format 1 is used for ultra-large cell coverage, format 2 uses more sequence repetitions for coverage enhancement, and format 3 is used in high-speed mobile scenarios, such as high-speed rail. In addition, NR also supports three series of short preamble formats: A, B, and C, which are suitable for different application scenarios.

2. Configuration of PRACH resources in NR:

(1) The period of PRACH resources. On the one hand, the period of PRACH resources affects the random access delay. A shorter PRACH period can shorten the random access delay; conversely, a longer PRACH period causes an increase in the random access delay. . On the other hand, the period of PRACH resources also affects the resource overhead occupied by PRACH. A distinctive feature of NR is that it needs to support beam scanning. In order to support random access requests from UEs distributed in various beams, the system needs to configure corresponding PRACH resources for each beam direction. Therefore, the NR standard supports the PRACH cycle of {10, 20, 40, 80, 160} ms. Network equipment can weigh various factors such as delay and system overhead to set an appropriate PRACH cycle.

(2) Time domain configuration of PRACH resources. In order to determine the time domain resources of PRACH, on the basis of determining the PRACH cycle, it is also necessary to further determine the time domain distribution of PRACH resources within the PRACH cycle. In FR1, the PRACH resource configuration information indicates the subframe number of one or more subframes where the PRACH resource is located; for FR2, in order to facilitate resource indication, the 60KHz subcarrier interval is used as a reference slot to indicate one or more subframes where the PRACH resource is located. The slot number of the reference slot. One subframe in FR1 corresponds to a 15KHz PRACH time slot, or two 30KHz PRACH time slots (as shown in Figure 2, one subframe corresponds to two PRACH time slots); in FR2, a reference time slot refers to 60KHz. Corresponds to one 60KHz PRACH time slot, or two 120KHz PRACH time slots (as shown in Figure 2, one time slot corresponds to two PRACH time slots). Within each PRACH time slot, as shown in Figure 2, the network can configure one or more RO (PRACH Occasion, PRACH opportunity). The so-called PRACH Occasion is the time-frequency resource that carries Preamble transmission. Furthermore, since NR supports a DL/UL mixed time slot structure, the network can be configured within a PRACH time slot. The starting symbol of the time domain resource occupied by the first PRACH occasion will be used when the next PRACH time slot is used. When the previous symbol needs to transmit downlink control information, the resources required for the corresponding downlink control information transmission can be reserved by configuring the appropriate starting symbol.

(3) PRACH frequency domain resource configuration. In the frequency domain, NR supports configuring 1, 2, 4 or 8 FDM (Frequency-division multiplexing, frequency division multiplexing) PRACH resources to expand PRACH capacity. When in the frequency domain When more than one PRACH resource is configured in the domain, these PRACH resources are continuously distributed in the frequency domain. As shown in Figure 3, the number of FDMs is equal to 4, that is, 4 PRACH resources are configured in the frequency domain. The network notifies the offset of the starting PRB of the first RO resource in the frequency domain relative to the starting physical resource block (PRB) of the BWP (Bandwidth Part) (ie, BWP PRB 0 shown in Figure 3). shift.

3. Initiation of PRACH transmission

Before the physical layer random access process starts: Layer 1 will receive an index set of SS/PBCH (Synchronization Signal and Physical Broadcast Channel) blocks from the higher layer and provide an index set to the higher layer. Corresponding RSRP (Reference Signal Receiving Power, reference signal receiving power) measurement results; Layer 1 can receive instructions from higher layers to perform Type-1 (Type-1) random access or Type-2 (Type-2) random access; Layer 1 receives the following information from higher layers: (1) Configuration of PRACH transmission parameters, including PRACH preamble format, PRACH transmission time domain resources and frequency domain resources, etc.; (2) PRACH preamble sequence determines the root sequence and cyclic shift Bit parameters, such as the index of the logical root sequence list, cyclic shift (Ncs), set type (unrestricted, restricted set A, or restricted set B), etc.; when receiving a PRACH transmission requested by a higher layer or PDCCH command , start the random access process. If the random access process is initiated by a PDCCH command, the SCS (sub-carrier space) transmitted by PRACH is the same as the SCS indicated by the higher layer.

There are three ways to trigger the random access process: PDCCH command trigger: gNB tells the UE that it needs to re-initiate the random access process through a special DCI (Downlink Control Information) format 1_0; MAC (Media Access Control) , Media Access Control) layer trigger: the UE selects preamble to initiate the random access process; RRC (Radio Resource Control, Radio Resource Control) layer trigger: such as initial access, reconstruction, handover, RRC_INACTIVE (inactive) to RRC_CONNECTED (connected) ) state, request other SI (System Information, system message), RRC request during synchronous reconfiguration, etc.

4. Mapping of SSB (Synchronization Signal Block, SSB-SynchronizationSignalBlock) and PRACH Occasion

Before the UE initiates access at any time, the UE will measure and evaluate the signal quality of the cell and the signal strength of each SSB in the cell. When initiating PRACH, the UE sends preamble on the PRACH occasion corresponding to the SSB with the strongest or stronger signal. If the network successfully receives the preamble, it will learn the downlink beam information of the UE based on the PRACH occasion where the preamble is located, and then use the beam information for subsequent communications, such as msg2, msg4, etc.

There are many possible proportional relationships between SSB and PRACH occurrence (ie RO): 1) one-to-one mapping; 2) many-to-one mapping; 3) one-to-many mapping. Considering supporting diverse scenarios, these three proportional relationships are all supported in the NR standard. For example, in scenarios with fewer users, multiple SSBs can be supported to correspond to the same PRACH occasion to save PRACH resources, and multiple SSBs share the preamble in the same PRACH occasion, that is, different SSBs correspond to different preambles in the same PRACH occasion. preamble subset; in scenarios with many users, one SSB can be supported to correspond to multiple PRACH occasions to provide sufficient PRACH capacity. There are multiple actual transmitted SSBs and multiple configured PRACH occasions and corresponding preamble resources in the system. Both the network and the UE need to know which PRACH occasions and corresponding preamble resources correspond to each SSB.

5. RACH power control

The power control of PRACH adopts an open-loop power control mechanism. The UE sets the transmit power of PRACH based on factors such as the expected received power configured by the network and the path loss measured by the downlink reference signal. During the random access process, if the UE sends the PRACH but does not receive the RAR (Random Access Response, random access response) from the network or does not successfully receive the conflict resolution message, the UE needs to retransmit the PRACH. When the NR UE supports multiple transmit beams and the transmit beam remains unchanged, the retransmitted PRACH transmit power climbs based on the last PRACH transmitted power until the random access process is successfully completed. If the transmit power continues to increase when switching beams, it may cause a large change in the interference level to the target beam that is switched to, affecting the signal transmission of other users. Therefore, the method shown in Figure 4 is considered in NR: from the initial transmission of PRACH to the first retransmission of PRACH and then to the second retransmission, the beam direction is not switched, and the power climbing timer keeps climbing (that is, the count value plus one), when PRACH is transmitted for the first time after handover (i.e., the third retransmission in Figure 4), the count of the power ramp counter remains unchanged, and the first transmission is tried first. If PRACH is retransmitted again (i.e., (the fourth retransmission in Figure 4), the counter is incremented. This design takes into account the control of interference during beam switching and the delay of random access.

Coverage is one of the key factors that operators consider when commercializing cellular communication networks, as it directly affects service quality as well as capital expenditure and operating costs. In most scenarios of actual deployment, UL performance may be the bottleneck, while in some vertical use cases, UL traffic is large, such as video uploading. In the Rel-17 research project 900061 "NR Coverage Enhancement", some bottleneck channels identified in the "860036" research project "NR Coverage Enhancement Research", especially the NR coverage of PUSCH, PUCCH and Msg3, were expanded. However, due to the limited range of Rel-17WID, not all needs for coverage enhancement were met. PRACH transmission is very important in many processes, such as initial access and beam failure recovery.

In the existing NR protocol, if the UE sends PRACH but does not receive the RAR (Random Access Response, Random Access Response) from the network or does not successfully receive the conflict resolution message, the UE needs to resend PRACH. When resending PRACH, the Power ramping mechanism. When retransmitting PRACH through the power climbing mechanism, it will inevitably cause corresponding delays. If the transmission power can be compensated during the initial transmission, that is, the transmission power can be reasonably increased, it can avoid entering the power climbing stage, or only need to A small number of PRACH retransmissions. When PRACH coverage is poor, due to the impact of wireless channel fluctuations and coverage, the transmit power calculated by the terminal based on the path loss and the target received power configured by the network in the existing mechanism may be too small. On the one hand, the PRACH transmission The performance is poor. On the other hand, the power climb will cause corresponding delays. Therefore, how to improve the coverage performance of PRACH, reduce the number of PRACH retransmissions to reduce the access delay, and ultimately improve the transmission performance of PRACH has become a problem that needs to be solved.

Figure 5 is a schematic flow chart of a communication method 500 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least some of the following:

S510. The terminal device receives the first information; wherein the first information is used by the terminal device to determine to send PRACH based on enhanced transmission power.

Figure 6 is a schematic flowchart of a communication method 600 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least some of the following:

S610. The network device sends first information; wherein the first information is used by the terminal device to determine to send PRACH based on enhanced transmission power.

In the foregoing embodiments, the network device may be an access network device, for example, it may be a gNB, an eNB, a base station, etc., which are not exhaustive.

On the network device side, whether to send the first information to the terminal device may be determined based on its own policy. For example, when the network device determines based on its own policy that the terminal device is allowed or required to send PRACH based on enhanced transmission power, the network device sends the aforementioned first information to the terminal device; in addition, the network device may also determine based on its own policy that the terminal device is not required or not allowed. When sending PRACH based on enhanced transmission power, the first information is not sent, or the third information is sent. The network device's own policy may be pre-saved; for example, the network device may determine that the terminal device currently located at the edge of the cell needs to send PRACH based on enhanced transmission power. At this time, the network device sends PRACH to the terminal device located less than the edge. The aforementioned first information; wherein, being located at a position smaller than the edge may refer to a position whose distance from the edge of the cell is less than a preset length. For another example, the network device may determine based on its own policy that some terminal devices with poor uplink signal measurement results need to send PRACH based on enhanced transmission power. In this case, the network device may send the aforementioned first information to the terminal devices with poor uplink signal measurement results. It should be understood that this is only an exemplary description. In actual processing, the network device may also use other strategies to determine whether the terminal device needs to send PRACH based on enhanced transmission power, but an exhaustive list is not provided here.

The aforementioned first information can be carried by any one of a variety of information or signaling; for example, the first information can be carried by one of the following: DCI (Downlink Control Information), RRC (Radio Resource Control) , Radio Resource Control) signaling, MAC CE (Control Element), system messages, etc. The DCI format (format) that can be used by the DCI can be any one of the DCI formats specified in the protocol. For example, any one of the following formats can be used: DCI format 0_0, DCI format 0_1, DCI format 1_1, DCI format 2_1, DCI format 2_2, DCI format 2_3, etc. The RRC signaling can be RRC signaling in any processing flow, for example, it can be RRC connection establishment signaling, RRC connection reconfiguration completion signaling, etc. All possible situations are not exhaustive here.

The following first explains the content carried by the first information:

In some possible implementations, the first information is used to instruct the terminal device to send PRACH based on enhanced transmission power. In this embodiment, the first information may be explicit indication information.

Specifically, the first information may carry an enable flag or information related to the enhanced transmission type. Correspondingly, the network device may not send the first information or send the third information when the terminal device is not required or not allowed to send PRACH based on the enhanced transmission power; the third information may be used to display and indicate the terminal The device does not use enhanced transmission power to transmit PRACH. The third information may carry a disable flag, a disallowed flag, or information related to traditional transmission types.

The aforementioned enable flag may specifically be a first designated value, and the aforementioned disable flag or disallowed flag may be a second designated value; the first designated value is different from the second designated value, and the first designated value and the second designated value Can be pre-configured. For example, the first specified value can be 0 and the second specified value can be 1; or the first specified value can be 1 and the second specified value can be 0; or other first specified values can also be set. or other second specified values. As long as the first specified value and the second specified value are different, they are all within the protection scope of this embodiment.

The aforementioned information related to the PRACH enhanced transmission power type may include one of the following: the identifier of the PRACH enhanced transmission power type, the index number of the PRACH enhanced transmission power type, the number of the PRACH enhanced transmission power type, and the name of the PRACH enhanced transmission power type. Information related to the PRACH traditional power type may include one of the following: the identification of the PRACH traditional power type, the number of the PRACH traditional power type, the name of the PRACH traditional power type, and the index number of the PRACH traditional power type.

Alternatively, the network device may only instruct the terminal device to send the PRACH based on the enhanced transmission power through the aforementioned first information, and do not configure the terminal device with power parameters used to determine the enhanced transmission power. In this case, the terminal device does not need to use the power parameters to determine the enhanced transmission power; alternatively, the power parameters and their values can be agreed upon in the protocol, and the terminal device itself saves the above power parameters and their values in advance, and the terminal device can use its own saved The power parameter determines the enhanced transmission power.

Optionally, the network device may instruct the terminal device to send the PRACH based on the enhanced transmission power through the aforementioned first information, and configure the power parameters used to determine the enhanced transmission power to the terminal device through the aforementioned first information. In this case, the first information is also used to indicate the value of a power parameter used to determine the enhanced transmission power.

The first information includes the power parameter and the value of the power parameter. For example, the first information may include the name of the power parameter and the value of the power parameter, such as power parameter a and value a1.

Alternatively, the first information includes an information field of the power parameter, and the information field of the power parameter is used to carry the value of the power parameter. For example, the first information may contain one or more information fields, and the content carried by each information field is predefined; assuming that the information field 1 is defined in the first information to carry the power parameter a; accordingly, the terminal device The information field 1 corresponding to the power parameter a can be determined according to the definition of each information field of the first information, and then the content carried in the information field 1 is used as the value of the power parameter a.

Optionally, the network device may instruct the terminal device to send the PRACH based on the enhanced transmission power through the aforementioned first information, and configure the power parameters used to determine the enhanced transmission power to the terminal device through other information. In this case, the processing by the network device also includes: the network device sends second information, and the second information includes: the power parameter and its value; correspondingly, the processing by the terminal device may also include: the terminal device Receive second information, where the second information includes the power parameter and its value. The second information is different from the aforementioned first information. The second information can be carried through any one of DCI, RRC signaling, MAC CE, system messages, etc., and the possible sending methods are not exhaustive here.

In some possible implementations, the aforementioned first information may be used to implicitly instruct the terminal device to send PRACH based on enhanced transmission power. In this implementation manner, the aforementioned first information is used to indicate the value of a power parameter, and the power parameter is used to determine the enhanced transmission power.

In this implementation, the first information includes the power parameter and the value of the power parameter. Alternatively, the first information includes an information field of the power parameter, and the information field of the power parameter is used to carry the value of the power parameter. The specific example of the value of the power parameter indicated by the first information is the same as the previous embodiment, and the description will not be repeated.

The above describes in detail the content that the first information may carry. On the terminal device side, the processing after receiving the first information is as follows:

After receiving the first information, the terminal device may determine that when transmitting the PRACH, the enhanced transmit power is used to transmit the PRACH. Alternatively, when the terminal device does not receive the aforementioned first information or receives the third information, it may determine that each time the PRACH is transmitted, the first transmission power is used to transmit the PRACH, where the first transmission power is less than the enhanced transmission power; The first transmission power may be the power used to transmit the PRACH specified in the relevant protocol, and the determination method is the method specified in the relevant protocol.

It should be pointed out that in the embodiments of the present application, unless otherwise specified, the terminal equipment transmitting PRACH based on enhanced transmission power has the same meaning as the terminal equipment performing enhanced transmission of PRACH, and will not be explained again below. Similarly, the terminal equipment transmitting PRACH based on the first transmission power has the same meaning as the terminal equipment not performing PRACH enhanced transmission, and the explanation will not be repeated below.

In one way, after receiving the aforementioned first information, the terminal device determines to use enhanced transmission power to transmit the PRACH each time it transmits the PRACH. In this way, the terminal equipment can use enhanced transmission power to transmit PRACH when transmitting PRACH for the first time.

In another way, after receiving the aforementioned first information, the terminal device can determine that the network device allows itself to use enhanced transmission power to send PRACH. However, whether the terminal device uses enhanced transmission power to send PRACH can also be further determined based on the first condition. .

Specifically, after the terminal equipment receives the first information, the method further includes: if the first condition is met, the terminal equipment determines the enhanced transmission power based on the power parameter, and sends the PRACH based on the enhanced transmission power;

Wherein, the first condition includes at least one of the following: the value of the power parameter is a valid value, and the power parameter is used to determine the enhanced transmission power; the downlink signal detection result is less than the first threshold value; the last PRACH was sent And no response information is received; the number of PRACH transmissions reaches the number threshold.

Each of the aforementioned first conditions will be explained separately:

The number of the above power parameters may be one or more. The value of the power parameter being a valid value means that the value of each power parameter is a valid value. Whether the value of each power parameter is a valid value can be determined based on the valid value range corresponding to each power parameter. The valid value range corresponding to different power parameters is related to the function of the power parameter. For example, if a certain power parameter is used for product calculation, the effective value range of the power parameter is greater than 1; if the power parameter is used for summation calculation, the effective value range of the power parameter is greater than 0.

The above-mentioned power parameter and its value may be stipulated in the agreement. At this time, the terminal device itself saves the above-mentioned power parameter and its value in advance; or the above-mentioned power parameter and its value may be obtained from the aforementioned first information; or the above-mentioned power The parameters and their values may be obtained from the aforementioned second information. Regarding various possible implementations in which the terminal device itself pre-stores the power parameter and its value, or the first information includes the power parameter and its value, or the second information includes the power parameter and its value, the foregoing embodiments have Description, I won’t go into details here.

The downlink signal is specifically a downlink reference signal, which may include at least one of the following: SSB (Synchronization Signal Block), CSI-RS (Channel State Information-Reference Signal, Channel State Information Reference Signal), DMRS (DeModulation Reference Signal) Signal (demodulation reference signal), PT-RS (Phase-tracking reference signal, phase tracking reference signal), etc.

The method for obtaining the downlink signal detection result may be: before the terminal device initiates access, the downlink signal is measured to obtain the downlink signal detection result. The downlink signal detection result can be represented by at least one of the following: RSRP (Reference Signal Receiving Power, reference signal receiving power), RSRQ (Reference Signal Receiving Quality, reference signal receiving strength), RSSI (Received Signal Strength Indicator, received signal strength) instruct).

The first threshold value may be preset, determined by the terminal device, or configured by the network device.

The first threshold value may be different from any threshold specified in the relevant protocol, that is, the first threshold value is a threshold value specifically used to determine whether to use enhanced transmission power to transmit the PRACH. The first threshold can also be called any one of the following: a dedicated threshold, a dedicated enhanced transmission power threshold, a dedicated high-power RSRP threshold (such as rsrp-ThresholdHighPower), a dedicated msg1RSRP gate limit (such as rsrp-ThresholdMsg1), dedicated preamble RSRP threshold (such as rsrp-ThresholdPreamble), dedicated PRACH RSRP threshold (such as rsrp-ThresholdPRACH), etc.; all possible names are not exhaustive here. .

When the first threshold value is configured by a network device, the processing of the network device may further include: the network device configures the first threshold value to the terminal device; the first threshold value is used for the terminal device The downlink signal detection results are judged to determine whether to use enhanced transmission power to transmit PRACH. The first threshold value can be carried by one of the following: Feature Combination Preambles (FeatureCombinationPreambles); Random Access Channel RACH Common Configuration Parameters (RACH-ConfigCommon); Common Configuration Parameters of Message msg A (MsgA-ConfigCommon); Beam Failure recovery configuration (BeamFailureRecoveryConfig); msg A configuration parameter (RACH-ConfigCommonTwoStepRA) in RACH public configuration parameters.

When the first threshold value is determined by the terminal device, the first threshold value is determined based on the second threshold value; wherein the second threshold value is configured by the network device. That is, the processing by the network device may further include: the network device configuring a second threshold value to the terminal device, and the second threshold value is used by the terminal device to determine the first threshold value.

Here, the second threshold value may refer to the threshold value specified in the relevant protocol. For example, the second threshold value may be any one of the following: rsrp-ThresholdSSB, which is used for 4-step random access. The RSRP threshold selected by SSB (Synchronization Signal Block); rsrp-ThresholdCSI-RS, that is, the RSRP threshold used for CSI-RS selection for 4-step random access; msgA-RSRP-ThresholdSSB, that is RSRP threshold used for SSB selection for 2-step random access; rsrp-ThresholdSSB-SUL, which is performed on the normal uplink (normal uplink, NUL) carrier and the supplementary uplink (SUL, supplementary uplink) carrier The selected RSRP threshold; msgA-RSRP-Threshold, that is, when both 2-step random access and 4-step random access are configured in the random access resources in the UL BWP (Bandwidth Part, BankWidth Part), perform 2 The RSRP threshold selected for step random access or 4-step random access; rsrp-ThresholdMsg3, which determines the RSRP threshold for Msg3repetition (repeated transmission).

Optionally, when the first threshold value is determined by the terminal device, the first threshold value may be directly the second threshold value. That is to say, the terminal device can directly reuse the threshold value specified in the relevant protocol (ie, the aforementioned second threshold value).

Optionally, when the first threshold value is determined by the terminal device, the first threshold value may be calculated based on the second threshold value.

For example, the aforementioned calculation may be obtained by calculating the second threshold value with the threshold adjustment coefficient and/or the threshold adjustment offset value. For example, the first threshold value may be equal to the threshold adjustment coefficient multiplied by the second threshold value; or, the first threshold value may be equal to the addition or addition of the threshold adjustment offset value and the second threshold value. Subtract; or, the first threshold value may be equal to the result obtained by adding or subtracting the threshold adjustment offset value and the second threshold value, multiplied by the threshold adjustment coefficient; or, the first threshold value The value may be equal to the result of multiplying the second threshold value and the threshold adjustment coefficient, and the result of adding or subtracting the threshold adjustment offset value. The threshold adjustment coefficient may be a positive number greater than or equal to 1 or a positive number less than 1; the threshold adjustment offset value may be greater than or equal to 0 or less than 0.

The aforementioned threshold adjustment coefficient and/or threshold adjustment offset value may be preset or configured by the network device. If the threshold adjustment coefficient and/or the threshold adjustment offset value are preset, it may mean that the threshold adjustment coefficient and/or the threshold adjustment offset value are agreed upon in the protocol and are pre-stored in the terminal device. When the aforementioned threshold adjustment coefficient and/or threshold adjustment offset value is configured for the network device, it may be carried by one of the following: Feature Combination Preambles (FeatureCombinationPreambles); Random Access Channel RACH Common Configuration Parameters (RACH-ConfigCommon) ; Common configuration parameters of message msg A (MsgA-ConfigCommon); Beam failure recovery configuration (BeamFailureRecoveryConfig); msg A configuration parameters in RACH public configuration parameters (RACH-ConfigCommonTwoStepRA). Or, when the aforementioned threshold adjustment coefficient and/or threshold adjustment offset value is configured for the network device, it can be carried by other messages or signaling, such as any one of system messages, DCI, RRC messages, and MAC CE. This is not correct. It is exhaustive.

The downlink signal detection result is: obtained by measuring the downlink signal corresponding to the downlink beam of the terminal equipment; or, obtained by measuring the downlink signal corresponding to the designated downlink beam of the terminal equipment; or, obtained by measuring the downlink signal corresponding to the designated downlink beam of the terminal equipment. Obtained from the designated downlink signal corresponding to the designated downlink beam of the device.

Wherein, the downlink signal detection result is obtained by measuring the downlink signal corresponding to the downlink beam of the terminal device; specifically, it may refer to: the terminal device can measure the downlink signal corresponding to all downlink beams; correspondingly , when the downlink signal detection results corresponding to all downlink beams are less than the first threshold value, the terminal equipment determines that enhanced transmission of PRACH is needed; otherwise, the terminal equipment does not perform enhanced transmission of PRACH. Here, all downlink beams may refer to all the beams that the terminal device determines to use; for example, when the random access is CBRA (Contention Based Random Access, contention-based random access), the terminal device will determine the beams that it uses. Beams (that is, all the beams used by itself).

The downlink signal detection result is obtained by measuring the downlink signal corresponding to the designated downlink beam of the terminal device; specifically, it may refer to: the terminal device can measure the downlink signal corresponding to the designated downlink beam; accordingly, When the downlink signal detection results corresponding to the designated downlink beam are all less than the first threshold value, it is determined that enhanced transmission of PRACH is required; otherwise, enhanced transmission of PRACH is not performed.

The downlink signal detection result is obtained from the designated downlink signal corresponding to the designated downlink beam of the terminal device; specifically, it may refer to: the terminal device can measure the designated downlink signal corresponding to the designated downlink beam; correspondingly , when the designated downlink signal detection result corresponding to the designated downlink beam is less than the first threshold value, it is determined that enhanced transmission of PRACH is required; otherwise, enhanced transmission of PRACH is not performed.

The designated downlink beam of the above terminal equipment can be indicated by the network equipment; for example, when the random access is CFRA (Contention Free Random Access, contention-free random access), the network equipment will indicate the beam for the terminal equipment; this implementation In this example, the beam directed by the network device to the terminal device is called the designated downlink beam of the terminal device.

The designated downlink signal corresponding to the above designated downlink beam can also be indicated by the network device; for example, when the random access is CFRA, the network device may not only indicate the beam for the terminal device, but also indicate the beam for the terminal device. Corresponding measurement signal; in this embodiment, the measurement signal corresponding to the beam indicated by the network device for the terminal device is called the designated downlink signal corresponding to the designated downlink beam.

The last time PRACH was sent and no response information was received, it can refer to: when the terminal device sent PRACH last time, the RAR (Random Access Response, random access response) sent by the network device was not received or was not successfully received. Conflict resolution message sent to the network device.

When the number of transmission times of the PRACH reaches a threshold value, the threshold value may be a positive integer, such as 2, or 3, or more or less, which is not limited here. The times threshold can be preset or configured by the network device. If the number of times threshold value is preset, it may mean that the number of times threshold value is agreed upon by the protocol and pre-stored in the terminal device. If the number of times threshold is configured by the network device, it can be configured by the network device through one of the following: RRC messages, DCI, MAC CE, system messages, etc., which are not exhaustive here.

The number of PRACH transmissions is determined based on the count value of the first counter. Wherein, the first counter is different from the second counter; wherein, the first counter is used to update the count value each time a PRACH is sent. For example, the initial count value of the first counter is 1, and each PRACH transmission is completed. The count value of the first counter is increased by 1. The second counter does not update the count value when the PRACH is transmitted for the first time after switching the beam. More specifically, the aforementioned first counter may be a PRACH transmission number counter (PREAMBLE_TRANSMISSION_COUNTER); the aforementioned second counter may be a PRACH power ramping counter (PREAMBLE_POWER_RAMPING_COUNTER).

PRACH is used to carry the preamble. The transmission of PRACH can refer to the transmission of the preamble (Preamble) on the PRACH; the preamble can be the preamble in msg (message) 1 of 4-step random access, or it can be Preamble in msgA for 2-step random access. Therefore, the above-mentioned number of PRACH transmissions may also be called the number of preamble (Preamble) transmissions.

Each of the above first conditions can be used individually or in combination.

In one example, the value of the aforementioned power parameter is an effective value and the downlink signal detection result is less than the first threshold value. When these two conditions are used alone, the terminal device can satisfy any one of these two conditions. Enhanced transmission power is used from the first PRACH transmission. When these two conditions are used in combination, the terminal equipment can use enhanced transmission power from the first transmission of PRACH if these two conditions are met.

In one example, the aforementioned PRACH was sent last time and no response information was received, and the number of PRACH transmissions reached the threshold. When these two conditions are used alone, the terminal device may determine after completing one or more PRACH transmissions. If either of the above two conditions is met, the PRACH is transmitted with enhanced transmission power when transmitting the PRACH next time. When these two conditions are used in combination, after completing one or more PRACH transmissions, if it is determined that the above two conditions are met at the same time, the PRACH will be transmitted with enhanced transmission power during the next PRACH transmission.

In another example, the value of the power parameter is a valid value, the downlink signal detection result is less than at least one of the first threshold values, and the PRACH was sent last time and no response information was received, and the number of PRACH transmissions reaches At least one of the number thresholds can be used in combination; for example, it can be when it is determined that the value of the power parameter is a valid value, the downlink signal detection result is less than the first threshold, and the number of PRACH transmissions reaches the number threshold. In this case, the enhanced transmission power is used to transmit PRACH in the next PRACH transmission (that is, the next retransmission).

In actual processing, the first condition may also include other conditions, for example, it may also include at least one of the following: the priority of the PRACH is higher than the preset priority threshold; the random access process triggered by the beam recovery process; for system messages (SI, System Information) requested random access; 2-step random access falls back to 4-step random access, etc. In actual processing, more conditions may be set, and one or more of the above first conditions can be used in combination, but this is not an exhaustive list.

The above describes how the terminal device determines whether to use enhanced transmission power to transmit the PRACH after receiving the first information.

Before explaining how to determine the enhanced transmission power, first explain how to determine the first transmission power of PRACH when PRACH enhanced transmission is not performed as specified in the relevant protocols:

On the network device side, the method further includes: the network device sending first configuration information to the terminal device, where the first configuration information includes a first parameter used to determine the first transmission power; the first The transmission power is less than the enhanced transmission power.

Here, the number of first parameters used to determine the first power parameter may be one or more. The first parameters are parameters specified in relevant protocols. The first parameter may include at least one of the following: preamble target received power, preamble format offset value, power adjustment enhancement step size, and 2-step random access power offset.

Correspondingly, on the terminal device side, the method further includes: the terminal device receiving the first configuration information. After receiving the first configuration information on the terminal equipment side, the method of determining the first transmission power may specifically include: a high-level layer of the terminal equipment calculates the PRACH target received power based on the first parameter, and the high-level layer of the terminal equipment calculates the PRACH target received power. The target received power is sent to the physical layer; the physical layer of the terminal device calculates a second power value based on the PRACH target received power and path loss, and selects the minimum value from the second power value and the maximum transmit power of the terminal device as the First transmission power. The first transmission power may specifically be the PRACH transmission power of the terminal equipment at the transmission opportunity.

The path loss may also be called path loss; the path loss may be measured by the terminal device. The way for the terminal equipment to measure the path loss can be: the terminal equipment activates the DL (Downlink) RS (Reference Signal, Reference Signal) associated with the PRACH transmission in the downlink BWP (BandWidth Part) of the serving cell on the carrier. Signal), the path loss is measured; among them, the path loss can be characterized by RSRP (Reference Signal Receiving Power, reference signal receiving power), the unit is dBm.

For example, the higher layer of the terminal equipment can calculate the PRACH target received power based on all the parameters that may be included in the first parameter. The calculation method can be expressed by the following formula:

PREAMBLE_RECEIVED_TARGET_POWER＝preambleReceivedTargetPower+DELTA_PREAMBLE+(PREAMBLE_POWER_RAMPING_COUNTER-1)×PREAMBLE_POWER_RAMPING_STEP+POWER_OFFSET_2STEP_RA

Among them, PREAMBLE_RECEIVED_TARGET_POWER is the aforementioned PRACH target received power (specifically, the PRACH target received power calculated by the high-level layer of the terminal device), preambleReceivedTargetPower is the preamble target received power indicated by the network device; DELTA_PREAMBLE is the preamble format offset value; PREAMBLE_POWER_RAMPING_COUNTER is the preamble code The transmission count value (can be the count value obtained by the aforementioned second counter, that is, the PRACH power climbing counter); PREAMBLE_POWER_RAMPING_STEP is the preamble power adjustment growth step (that is, the power adjustment enhancement step), and POWER_OFFSET_2STEP_RA is the 2-step random access power offset. shift.

The physical layer of the aforementioned terminal device calculates a second power value based on the PRACH target received power and path loss, and selects the minimum value from the second power value and the maximum transmit power of the terminal device as the first transmission power. The following formula represents:

P _PRACH,b,f,c (i)=min{P _CMAX,f,c (i),P _{PRACH,target,f,c} +PL _b,f,c }

Among them, i represents the i-th transmission opportunity, c represents the current serving cell of the terminal device, f represents the carrier frequency used by the terminal device, and b represents the currently activated uplink BWP of the terminal device. Here, i, b, c, and f are all positive Integer; P _{CMAX, f, c} (i) represents the maximum transmit power of the terminal device; P _{PRACH, target, f, c} is the aforementioned PRACH target receive power (specifically, the PRACH target receive power received by the physical layer of the terminal device from the upper layer ); PL _{b, f, c} are path losses; min{} represents the minimum value; P _{PRACH, b, f, c} (i) represents the aforementioned first transmission power. Specifically, the first transmission power can be the terminal equipment in the first PRACH transmission power on i transmission opportunities.

It should be pointed out that the high-level layer of the terminal device calculates the PRACH target received power, which is expressed as "PREAMBLE_RECEIVED_TARGET_POWER" in this embodiment. After the high-level layer of the terminal device sends the PRACH target received power to the physical layer, the physical layer is based on the PRACH target. When the received power is calculated, it is expressed as "P _{PRACH, target, f, c} ", and the actual values of the two are the same; in the above embodiment, PREAMBLE_RECEIVED_TARGET_POWER1 is the PRACH target received power calculated by the high-level layer of the terminal device , expressed as P _{PRACH,target,f,c} at the physical layer of the terminal device. Unless otherwise specified below, although the PRACH target received power is expressed in different ways at the physical layer and higher layer, the actual values are the same.

The above is a specific method of how to determine the first transmission power of PRACH when the terminal equipment determines not to perform PRACH enhanced transmission (that is, not to send PRACH based on enhanced transmission power). The method of determining the enhanced transmission power in this embodiment is different from the calculation method of the aforementioned first transmission power, and the enhanced transmission power determined in this embodiment is greater than the aforementioned first transmission power. Next, combined with various implementation methods, a detailed description will be given on how to determine the enhanced transmission power:

In one implementation, the enhanced transmission power is the minimum value of a first power value and a maximum transmission power of the terminal device; wherein the first power value is determined based on a power parameter.

The enhanced transmission power can be expressed by the following formula:

P _{PRACH-PowerEnhance} =min{P _CMAX,f,c (i),P ₁ }; where P _{PRACH-PowerEnhance} is the enhanced transmission power; P _CMAX,f,c (i) represents the maximum transmit power of the terminal device; P ₁ is the first power value; min{} means taking the minimum value.

Example one,

The first power value is determined based on the power parameter, PRACH first target received power and path loss. In this example, only the physical layer of the terminal device needs to use a different processing method from that in the relevant protocol; the higher layer of the terminal device (such as the MAC layer) is processed in the same processing method as the relevant protocol, that is, the first target of PRACH The method of determining the received power and path loss is the same as the method of determining the PRACH target received power and path loss in the previous embodiment, and the description will not be repeated here. Moreover, in this example, the PRACH first target receiving power is equal to the aforementioned PRACH target receiving power.

Optionally, the power parameter includes: a first power parameter; the first power value is equal to one of the following: after the PRACH first target received power is multiplied by the value of the first power parameter, The path loss is added; after the path loss is multiplied by the value of the first power parameter, it is added to the PRACH first target received power; the PRACH first target received power is added to the path loss. After addition, it is multiplied by the value of the first power parameter.

It should be pointed out that no matter which of the above calculation methods is used, the value of the first power parameter is greater than 1.

Wherein, the first power value may be equal to the PRACH first target received power multiplied by the value of the first power parameter, and then added to the path loss. The first power parameter may also be called a first Powerfactor. The calculation method of the first power value can be expressed by the following formula:

P ₁ =Powerfactor ₁ ×P _{PRACH,target,f,c,1} +PL _b,f,c ;

Among them, c represents the current serving cell of the terminal equipment, f represents the carrier frequency used by the terminal equipment, and b represents the currently activated uplink BWP of the terminal equipment; P _{PRACH, target, f, c, 1} is the first target received power of PRACH; PL _{b , f, c} are path losses; Powerfactor ₁ represents the first power factor, which is the aforementioned first power parameter; P ₁ is the first power value.

Alternatively, the first power value may be equal to the path loss multiplied by the value of the first power parameter and then added to the PRACH first target received power; the first power parameter may also be referred to as the first power parameter. 1Powerfactor (power factor). The calculation method of the first power value can be expressed by the following formula:

P ₁ =P _{PRACH,target,f,c,1} +Powerfactor ₁ ×PL _b,f,c ; where, c, f, b, P _{PRACH,target,f,c,1} , PL _b,f,c , The description of Powerfactor ₁ and P ₁ is the same as that of the previous embodiment, and will not be repeated.

Alternatively, the first power value may be equal to the addition of the PRACH first target received power and the path loss, and then multiplied by the value of the first power parameter; the first power parameter may also be called the first power parameter. 1Powerfactor (power factor). The calculation method of the first power value can be expressed by the following formula:

P ₁ =Powerfactor ₁ ×(P _{PRACH,target,f,c,1} +PL _b,f,c ); where, c, f, b, P _{PRACH,target,f,c,1} , PL _b,f, The descriptions of _c , Powerfactor ₁ and P ₁ are the same as those in the previous embodiment, and will not be repeated.

The value of the aforementioned first power parameter may be a specified value greater than 1; or the value of the aforementioned first power parameter may also be related to the number of PRACH transmissions.

In the case where the value of the first power parameter is related to the number of PRACH transmissions, the value of the first power parameter is one of the following:

The number of transmissions based on PRACH is determined from a plurality of first candidate values; wherein the plurality of first candidate values are greater than 1;

Determined based on the reference value of the first power parameter and the first adjustment amount, which is determined based on the number of PRACH transmissions and the first preset step size; wherein, the reference value of the first power parameter and /Or the first preset step size is greater than 1; the first preset step size is preset or configured by the network device.

To explain respectively: in one possible case, the value of the first power parameter is determined from a plurality of first candidate values based on the number of PRACH transmissions; wherein the plurality of first candidate values The value is greater than 1.

The network device may configure multiple first candidate values corresponding to the first power parameter for the terminal device, and the multiple first candidate values are used by the terminal device to determine the value of the first power parameter; wherein, The multiple first candidate values are greater than 1. Correspondingly, the terminal equipment side determines the value of the first power parameter from a plurality of first candidate values based on the number of PRACH transmissions; wherein the plurality of first candidate values are greater than 1. The method for determining the number of transmission times of PRACH on the terminal equipment side has been described in the previous embodiment, and will not be repeated here.

The plurality of first candidate values are all greater than 1, and different first candidate values among the plurality of first candidate values are associated with different times of PRACH transmission. For example, the number of multiple first candidate values may be two, which are respectively called first candidate value 1 and first candidate value 2, where the first candidate value 1 is related to the first PRACH transmission to the first PRACH transmission. X times of PRACH transmission are associated, and the first candidate value 2 is associated with the X+1th PRACH transmission and the number of subsequent PRACH transmissions; the first candidate value 1 is smaller than the first candidate value 2. For another example, the number of multiple first candidate values may be 4, which are respectively called first candidate value 1 to first candidate value 4, where first candidate value 1 is associated with the first PRACH transmission ~ The first candidate value 2 is associated with the X-th PRACH transmission, the first candidate value 2 is associated with the A candidate value 4 is associated with the 3X+1 PRACH transmission and each subsequent PRACH transmission; wherein the first candidate value 1 is less than the first candidate value 2, and the first candidate value 2 is less than the first candidate value 2. Value 3. The first candidate value 3 is smaller than the first candidate value 4. Wherein, the X can be an integer greater than or equal to 1, and the X can be configured according to the actual situation, for example, it can be set to 2, or 3, or larger or smaller, which are not exhaustive here. It should be understood that the above are only some exemplary descriptions of how different first candidate values among multiple first candidate values are associated with different PRACH transmissions, and do not mean that only the above several correlation methods are possible. In actual processing, each PRACH transmission can also be associated with a different first candidate value, and as the number of PRACH transmissions increases, the first candidate value also increases accordingly, which are all within the protection scope of this embodiment, but are not Do exhaustion.

In a possible situation, the value of the first power parameter is determined based on a reference value of the first power parameter and a first adjustment amount, and the first adjustment amount is based on the number of PRACH transmissions and the first adjustment amount. The preset step size is determined.

In this case, the number of reference values of the first power parameter is one, and the reference value of the first power parameter may be preset or configured by the network device.

The processing of the network device may include: the network device configures the reference value of the first power parameter and the first preset step size for the terminal device; the reference value of the first power parameter and the first preset step size. long, used by the terminal device to determine the value of the first power parameter; wherein the reference value of the first power parameter and/or the first preset step size is greater than 1.

The terminal equipment may calculate the value of the first power parameter based on the number of transmissions of the PRACH. Specifically, the value of the first power parameter may be calculated as follows: the terminal equipment may calculate the value of the first power parameter based on the first preset step size and the number of transmissions of the PRACH to obtain the first adjustment amount; The reference value of the power parameter is added to the first adjustment amount to obtain the value of the first power parameter.

The method of obtaining the first adjustment amount by calculating based on the first preset step size and the number of PRACH transmissions may include one of the following:

In one way, the terminal device directly multiplies the first preset step size and the number of PRACH transmissions to obtain the first adjustment amount.

Using this method, the terminal device calculates the value of the first power parameter, which can be expressed by the following formula: the value of the first power parameter = the reference value of the first power parameter + z * first preset step size; where , z represents the number of PRACH transmissions, and "z*first preset step size" is the aforementioned first adjustment amount. Since it is necessary to ensure that the value of the first power parameter is greater than 1, at least one of the aforementioned reference value of the first power parameter and the first preset step size is greater than 1; and, the reference value of the first power parameter and the first A preset step size is all positive.

In another way, the terminal equipment divides the number of PRACH transmissions by a preconfigured first adjustment factor and rounds it up, and then multiplies the number by the first preset step size to obtain the first adjustment amount. Among them, the preconfigured first adjustment factor can be configured according to the actual situation, and can be preset by the terminal device or configured by the network device; the preconfigured first adjustment factor can be any positive number, for example, it can be a positive number greater than 1. , or it can be a positive number greater than 0 and less than 1.

Using this method, the terminal device calculates the value of the first power parameter, which can be expressed by the following formula: the value of the first power parameter = the reference value of the first power parameter + floor (z/y1) * first preset Set the step length. Among them, z represents the number of PRACH transmissions, y1 represents the preconfigured first adjustment factor, floor() represents rounding up, and "floor(z/y1)*first preset step size" is the aforementioned first adjustment amount. When this processing method is adopted, since it is necessary to ensure that the value of the first power parameter is greater than 1, at least one of the aforementioned reference value of the first power parameter and the first preset step size is greater than 1; and, the first power The reference value of the parameter and the first preset step size are both positive numbers.

It should be understood that the foregoing description of the value of the first power parameter calculated by the terminal device is only an illustrative description. In actual processing, other methods can be used to calculate the value of the first power parameter, as long as the first power parameter is guaranteed to be If the value is a positive number greater than 1, it is within the protection scope of this embodiment, and no exhaustive list will be made.

Optionally, the power parameter includes a second power parameter; the first power value is equal to the sum of the PRACH first target received power, the value of the second power parameter and the path loss; The value of the second power parameter is greater than 0. In this example, the second power parameter may be called a first power lifting value (Powerlifting). The calculation method of the first power value can be expressed by the following formula:

P ₁ =Powerlifting ₁ +P _{PRACH,target,f,c,1} +PL _b,f,c ; where, c, f, b, P _{PRACH,target,f,c,1} , PL _b,f,c , The description of P ₁ is the same as that of the previous embodiment and will not be repeated; Powerlifting ₁ is the first power lifting value.

The value of the aforementioned second power parameter may be a specified value greater than 0; or the value of the aforementioned second power parameter may also be related to the number of PRACH transmissions.

In the case where the value of the second power parameter is related to the number of PRACH transmissions, the value of the second power parameter is one of the following: based on the number of PRACH transmissions, determined from a plurality of second candidate values. ;Wherein, the plurality of second candidate values are greater than 0;

Determined based on the reference value of the second power parameter and the second adjustment amount, which is determined based on the number of PRACH transmissions and the second preset step size; wherein, the reference value of the second power parameter and /Or the second preset step size is greater than 0; the second preset step size is preset or configured by the network device.

To explain respectively: in one possible case, the value of the second power parameter is determined from a plurality of second candidate values based on the number of PRACH transmissions. Specifically, the network device configures the second power parameter corresponding to multiple second candidate values for the terminal device; the multiple second candidate values are used by the terminal device to determine the value of the second power parameter; wherein, The plurality of second candidates have values greater than 0. Correspondingly, the terminal equipment side determines the value of the second power parameter from a plurality of second candidate values based on the number of PRACH transmissions. The plurality of second candidate values are all greater than 0, and different second candidate values among the plurality of second candidate values are associated with different times of PRACH transmission.

For example, the number of multiple second candidate values may be 2, which are respectively called second candidate value 1 and first candidate value 2, where the second candidate value 1 is related to the first PRACH transmission to the first PRACH transmission. X times of PRACH transmissions are associated, and the second candidate value 2 is associated with the X+1th PRACH transmission and the number of subsequent PRACH transmissions; the second candidate value 1 is smaller than the second candidate value 2. For another example, the number of multiple second candidate values may be three, which are respectively called second candidate value 1 to second candidate value 3, where second candidate value 1 is related to the first PRACH transmission to The second candidate value 2 is associated with the X-th PRACH transmission, the second candidate value 2 is associated with the X+1-th PRACH transmission to the 2X-th PRACH transmission, and the second candidate value 3 is associated with the 2X+1-th and subsequent PRACH transmissions. ; Among them, the second candidate value 1 is less than the second candidate value 2, and the second candidate value 2 is less than the second candidate value 3. Wherein, It should be understood that the above are only some exemplary descriptions of how different second candidate values among multiple second candidate values are associated with different PRACH transmissions, and do not mean that only the above several correlation methods are possible. In actual processing, each PRACH transmission can also be associated with a different second candidate value, and as the number of PRACH transmissions increases, the second candidate value also increases accordingly, which is within the protection scope of this embodiment, but does not Do exhaustion.

In a possible situation, the value of the second power parameter is determined based on the reference value of the second power parameter and a second adjustment amount, and the second adjustment amount is based on the number of PRACH transmissions and the second adjustment amount. The preset step size is determined.

In this case, the number of reference values of the second power parameter is one, and the reference value of the second power parameter may be preset or configured by the network device. The aforementioned second preset step size and the aforementioned first preset step size may be the same or different. In a preferred example, both the reference value and the second preset step size of the second power parameter are positive numbers greater than 0.

The processing of the network device may include: the network device configures the reference value and the second preset step size of the second power parameter for the terminal device; the reference value and the second preset step size of the second power parameter. , used by the terminal device to determine the value of the second power parameter; wherein the reference value of the second power parameter and/or the second preset step is greater than 0.

The terminal equipment may calculate the value of the second power parameter based on the number of PRACH transmissions. Specifically, the terminal equipment may calculate the second power parameter based on the second preset step size and the number of PRACH transmissions to obtain the second adjustment amount; The reference value of the power parameter is added to the second adjustment amount to obtain the value of the second power parameter.

The method of obtaining the second adjustment amount by calculating based on the second preset step size and the number of PRACH transmissions may include one of the following:

In one way, the terminal device directly multiplies the second preset step size and the number of PRACH transmissions to obtain the second adjustment amount.

Using this method, the terminal device calculates the value of the second power parameter, which can be expressed by the following formula: the value of the second power parameter = the reference value of the second power parameter + z * second preset step size; where , z represents the number of PRACH transmissions, and "z*second preset step size" is the aforementioned second adjustment amount.

In another way, the number of PRACH transmissions is divided by the preconfigured second adjustment factor, rounded up, and then multiplied by the second preset step size to obtain the second adjustment amount. Among them, the preconfigured second adjustment factor can be configured according to the actual situation, and can be preset by the terminal device or configured by the network device; it can be any positive number, for example, it can be a positive number greater than 1, or it can be greater than 0 and A positive number less than 1; the value of the second adjustment factor and the aforementioned first adjustment factor may be the same or different.

Using this method, the terminal device calculates the value of the second power parameter, which can be expressed by the following formula: the value of the second power parameter = the reference value of the second power parameter + floor (z/y2) * second preset Set the step length. Among them, z represents the number of PRACH transmissions, y2 represents the preconfigured second adjustment factor, floor() represents rounding up, and "floor(z/y2)*second preset step size" is the aforementioned second adjustment amount. When this processing method is adopted, since it is necessary to ensure that the value of the second power parameter is greater than 0, the reference value and the second preset step size of the aforementioned second power parameter can be a positive number greater than 0.

It should be understood that the above-mentioned method of calculating the value of the second power parameter is only an exemplary description. In actual processing, other methods can be used to calculate the value of the second power parameter, as long as the value of the second power parameter is ensured. If the value is a positive number greater than 0, it is within the protection scope of this embodiment, and no exhaustive list will be made.

Regarding which of the above calculation methods is used for the first power value, it may be pre-configured in the terminal equipment. For example, the terminal equipment may be pre-configured to use the PRACH first target received power multiplied by the value of the first power parameter. Then, the first power value is determined by adding it to the path loss; for another example, the terminal equipment can be pre-configured to adopt the PRACH first target received power, the value of the second power parameter and the value of the second power parameter. The first power value is determined by adding path losses; for another example, different ways of determining the value of the first power parameter and different ways of determining the value of the second power parameter can be combined, and the terminal equipment can be pre-determined. Configure different calculation methods for determining the first power value, and there is no exhaustive list here.

Alternatively, which calculation method is used by the terminal device to determine the first power value may be indicated by the network device. For example, the terminal device can pre-store multiple candidate calculation methods and their corresponding indexes; the network device can send an index of the calculation method of the first power value to the terminal device, and accordingly, the terminal device can based on the index of the calculation method, Determine which calculation method is used to determine the first power value this time.

For example, it is assumed that the terminal equipment pre-stores at least one of the following candidate calculation methods: candidate calculation method 1, after multiplying the PRACH first target received power and the value of the first power parameter, and multiplying it with the path value. The first power value is determined by adding the path losses; candidate calculation method 2 uses the PRACH first target received power, the value of the second power parameter and the path loss addition method to determine the first power value. A power value. If the index of the calculation method sent by the network device to the terminal device is "1", the terminal device can determine the PRACH first target received power multiplied by the value of the first power parameter, and then added to the path loss. method to determine the first power value.

It should be noted that the foregoing candidate calculation methods are only illustrative. During actual configuration, more fine-grained candidate calculation methods and their indexes can also be configured. For example, the foregoing examples also provide different ways of determining the value of the first power parameter, and different ways of determining the value of the second power parameter; accordingly, it is also possible to combine the determination of the value of the first power parameter and the second power parameter. Different ways of obtaining the value, configure more candidate calculation methods and indexes of the first power value in the terminal device, but we will not exhaustively list them here.

Example two,

The power parameter includes a third power parameter; wherein the third power parameter is used to determine the PRACH first target received power; the PRACH first target received power is used to determine the first power value.

The PRACH first target received power is determined based on the first parameter and the third power parameter.

In this example, only the upper layer of the terminal device (such as the MAC layer) needs to use a different processing method from the relevant protocol; the physical layer of the terminal device needs to use the same processing method as the relevant protocol.

Optionally, the PRACH first target received power is equal to the sum of the calculation result of the first parameter and the value of the third power parameter; wherein the value of the third power parameter is greater than 0. The description of the first parameter is the same as that of the previous embodiment and will not be described again.

The third power parameter may be called a second power lifting value (Powerlifting). In this example, the third power parameter may be the same as or different from the foregoing second power parameter; or, the value of the third power parameter may be the same as or different from the value of the foregoing second power parameter. The calculation method of the PRACH first target received power can be expressed by the following formula:

PREAMBLE_RECEIVED_TARGET_POWER1＝Powerlifting ₂ +preambleReceivedTargetPower+DELTA_PREAMBLE+(PREAMBLE_POWER_RAMPING_COUNTER-1)×PREAMBLE_POWER_RAMPING_STEP+POWER_OFFSET_2STEP_RA

Among them, the "(preambleReceivedTargetPower+DELTA_PREAMBLE+(PREAMBLE_POWER_RAMPING_COUNTER–1)×PREAMBLE_POWER_RAMPING_STEP+POWER_OFFSET_2STEP_RA)" part is the calculation result of the aforementioned first parameter.

In the above formula, PREAMBLE_RECEIVED_TARGET_POWER1 is the first target received power of the aforementioned PRACH; Powerlifting ₂ represents the second power lifting value, which is the third power parameter; preambleReceivedTargetPower is the preamble target received power indicated by the network device; DELTA_PREAMBLE is the preamble format offset value; PREAMBLE_POWER_RAMPING_COUNTER is the preamble transmission count value; PREAMBLE_POWER_RAMPING_STEP is the preamble power adjustment growth step (that is, the power adjustment enhancement step), and POWER_OFFSET_2STEP_RA is the 2-step random access power offset.

The value of the aforementioned third power parameter may be a designated value greater than 0, and the designated value of the third power parameter and the designated value of the aforementioned second power parameter may be the same or different; or the aforementioned third power parameter The value of can also be related to the number of PRACH transmissions.

In the case where the value of the third power parameter is related to the number of PRACH transmissions, the value of the third power parameter is one of the following: determined from a plurality of third candidate values based on the number of PRACH transmissions. ; wherein, the plurality of third candidate values are greater than 0;

Determined based on the first reference value of the third power parameter and the third adjustment amount, the third adjustment amount is determined based on the number of PRACH transmissions and the third preset step size; wherein, the first value of the third power parameter The reference value and/or the third preset step size is greater than 0; the third preset step size is preset or configured by the network device.

To explain respectively: in one possible case, the value of the third power parameter is determined from a plurality of third candidate values based on the number of PRACH transmissions. When the network device configures power parameters for the terminal device, the third power parameter can be configured to correspond to multiple third candidate values; accordingly, the terminal device side determines the third candidate value from the multiple third candidate values based on the number of PRACH transmissions. Values of three power parameters; wherein the plurality of third candidate values are greater than 0. In actual processing, each PRACH transmission can be associated with a different third candidate value, and as the number of PRACH transmissions increases, the third candidate value also increases accordingly; the relevant description of the third candidate value is the same as the aforementioned second candidate value. The candidate values are similar and will not be repeated here.

In another possible situation, the value of the third power parameter is determined based on the first reference value of the third power parameter and a third adjustment amount, and the third adjustment amount is based on the number of PRACH transmissions. and the third preset step size is determined.

In this case, the number of first reference values of the third power parameter is 1, and the first reference value of the third power parameter may be preset or configured by the network device; the first reference value of the third power parameter The first reference value may be a positive number greater than 0. Further, the aforementioned third preset step size and the aforementioned second preset step size may be the same or different; the first reference value of the third power parameter and the aforementioned reference value of the second power parameter may be the same or different. different.

The processing of the network device may include: the network device configures the first reference value and the third preset step size of the third power parameter for the terminal device; the first reference value and the third preset step size of the third power parameter. Three preset step sizes are used for the terminal device to determine the value of the third power parameter; wherein the first reference value of the third power parameter and/or the third preset step size is greater than 0.

Several possible calculation methods for the value of the third power parameter are similar to the several possible calculation methods for determining the value of the second power parameter mentioned above. It is necessary to replace the aforementioned reference value of the second power parameter with The first reference value of the third power parameter is to replace the aforementioned second preset step size with the third preset step size, and replace the aforementioned preconfigured second adjustment factor with a preconfigured third adjustment factor. There is no need here. Make repeated instructions.

Optionally, the PRACH first target received power is obtained based on the value of the third power parameter multiplied by at least part of the first parameters.

In one case, at least some of the first parameters may be all first parameters. The processing of the terminal equipment may be: after calculating all the parameters in the first parameter, multiplying them with the value of the third power parameter to obtain the PRACH first target received power.

The aforementioned third power parameter may also be called the second power factor. Here, the third power parameter may be the same as or different from the foregoing first power parameter; or, the value of the third power parameter may be the same as or different from the value of the foregoing first power parameter.

For example, the PRACH first target received power can be expressed by the following calculation formula:

PREAMBLE_RECEIVED_TARGET_POWER1＝Powerfactor ₂ ×(preambleReceivedTargetPower+DELTA_PREAMBLE+(PREAMBLE_POWER_RAMPING_COUNTER-1)×PREAMBLE_POWER_RAMPING_STEP+POWER_OFFSET_2STEP_RA)

Among them, Powerfactor ₂ is the second power factor, that is, the aforementioned third power parameter. The description of other parameters of the aforementioned formula is the same as that of the aforementioned embodiment and will not be described again.

In another case, at least some of the first parameters are not all first parameters. The PRACH first target received power is equal to the value of the third power parameter multiplied by some of the first parameters and then added to the calculation result of the remaining parameters of the first parameter.

Specifically, the processing of the terminal device may be: after calculating some of the parameters in the first parameter, multiply them with the value of the third power parameter to obtain the first value; calculate the remaining parameters of the first parameter to obtain The calculation result of the remaining parameters of the first parameter is then added to the first numerical value to obtain the PRACH first target received power.

For example, some of the first parameters include: preambleReceivedTargetPower. At this time, the PRACH first target received power can be expressed by the following calculation formula:

PREAMBLE_RECEIVED_TARGET_POWER1＝Powerfactor ₂ ×preambleReceivedTargetPower+DELTA_PREAMBLE+(PREAMBLE_POWER_RAMPING_COUNTER-1)×PREAMBLE_POWER_RAMPING_STEP+POWER_OFFSET_2STEP_RA

The description of each parameter in the formula is the same as that in the previous embodiment and will not be described again.

For example, some of the first parameters include: preambleReceivedTargetPower and preamble format offset value (DELTA_PREAMBLE); at this time, the PRACH first target received power can be expressed by the following calculation formula:

PREAMBLE_RECEIVED_TARGET_POWER1＝Powerfactor ₂ ×(preambleReceivedTargetPower+DELTA_PREAMBLE)+(PREAMBLE_POWER_RAMPING_COUNTER-1)×PREAMBLE_POWER_RAMPING_STEP+POWER_OFFSET_2STEP_RA

For example, some of the first parameters include: preamble received target power (preambleReceivedTargetPower), preamble format offset value (DELTA_PREAMBLE), and 2-step random access power offset (POWER_OFFSET_2STEP_RA); at this time, PRACH first The target received power can be expressed by the following calculation formula:

PREAMBLE_RECEIVED_TARGET_POWER1＝Powerfactor ₂ ×(preambleReceivedTargetPower+DELTA_PREAMBLE+POWER_OFFSET_2STEP_RA)+(PREAMBLE_POWER_RAMPING_COUNTER-1)×PREAMBLE_POWER_RAMPING_STEP

It should be understood that the above are just a few examples. In actual processing, there can be other combinations, but they will not be listed one by one.

The value of the aforementioned third power parameter may be a specified value greater than 1; or the value of the aforementioned third power parameter may also be related to the number of PRACH transmissions.

In the case where the value of the third power parameter is related to the number of PRACH transmissions, the value of the third power parameter is one of the following: determined from a plurality of fourth candidate values based on the number of PRACH transmissions. ; wherein, the plurality of fourth candidate values are greater than 1;

Determined based on the second reference value of the third power parameter and the fourth adjustment amount, the fourth adjustment amount is determined based on the number of PRACH transmissions and the fourth preset step size; wherein, the third power parameter The second reference value and/or the fourth preset step size is greater than 1; the fourth preset step size is preset or configured by the network device.

To explain respectively: in one possible case, the value of the third power parameter is determined from a plurality of fourth candidate values based on the number of PRACH transmissions. Specifically, when the network device configures the power parameter for the terminal device, the third power parameter may be configured to correspond to a plurality of fourth candidate values; the plurality of fourth candidate values are used by the terminal device to determine the third power parameter. The value of; wherein the plurality of fourth candidate values are greater than 1. Correspondingly, the terminal equipment side determines one value as the third power parameter from a plurality of fourth candidate values based on the number of PRACH transmissions; wherein the plurality of fourth candidate values are greater than 1. The plurality of fourth candidate values are all greater than 1, and different fourth candidate values among the plurality of fourth candidate values are associated with different times of PRACH transmission. In actual processing, each PRACH transmission can be associated with a different fourth candidate value, and as the number of PRACH transmissions increases, the fourth candidate value also increases accordingly; the relevant description of the fourth candidate value is the same as the aforementioned first The candidate values are similar and will not be repeated here.

In a possible situation, the value of the third power parameter is determined based on the second reference value of the third power parameter and a fourth adjustment amount, and the fourth adjustment amount is based on the sum of the number of PRACH transmissions. The fourth preset step size is determined.

In this case, the number of second reference values of the third power parameter is one, and the second reference value of the third power parameter may be preset or configured by the network device. The second reference value of the third power parameter may be a positive number greater than 1; the second reference value of the third power parameter may be the same as or different from the reference value of the first power parameter. The foregoing fourth preset step size and any one of the foregoing second preset step size, first preset step size, and third preset step size may be the same or different.

The processing on the network device side may include: the network device configuring the first reference value and the third preset step size of the third power parameter for the terminal device; the first reference value and the third preset step size of the third power parameter. The third preset step size is used by the terminal device to determine the value of the third power parameter; wherein the first reference value of the third power parameter and/or the third preset step size is greater than 0 .

Regarding the terminal equipment side, several possible calculation methods for the value of the third power parameter are similar to the several possible calculation methods for determining the value of the first power parameter mentioned above. It is necessary to refer to the aforementioned first power parameter. The value is replaced with the second reference value of the third power parameter, the aforementioned first preset step size is replaced with the fourth preset step size, and the aforementioned preconfigured first adjustment factor is replaced with the preconfigured fourth adjustment Factors will not be explained again here.

Regarding which of the above-mentioned calculation methods is used for the first target received power of the PRACH, it can be pre-configured in the terminal equipment. For example, the terminal equipment can be pre-configured to use the calculation result of the first parameter and the calculation result of the third power parameter. The PRACH first target received power is determined by taking the sum of values; for another example, the PRACH first target received power can be pre-configured to be based on the value of the third power parameter and the first parameter. It is obtained by multiplying at least some of the parameters; for another example, different calculation methods for determining the first target received power of the PRACH can be pre-configured in combination with different methods for determining the value of the third power parameter. This is not exhaustive here.

Alternatively, which calculation method is used by the terminal device to determine the PRACH first target received power may be indicated by the network device. For example, the terminal device can pre-store multiple candidate calculation methods and their corresponding indexes; the network device can send an index of the calculation method to the terminal device, and accordingly, the terminal device can determine which calculation method to use this time based on the index of the calculation method. A calculation method is used to determine the PRACH first target received power.

For example, it is assumed that the terminal device has pre-stored at least one of the following candidate calculation methods: candidate calculation method 3, using the sum of the calculation result of the first parameter and the value of the third power parameter to determine the PRACH first target received power; candidate calculation method 4, the PRACH first target received power is obtained based on the value of the third power parameter multiplied by at least part of the first parameters. If the index of the calculation method sent by the network device to the terminal device is "3", the terminal device may determine that the PRACH third power parameter is determined by using the sum of the calculation result of the first parameter and the value of the third power parameter. a target received power.

It should be noted that the foregoing candidate calculation methods are only illustrative. During actual configuration, more fine-grained candidate calculation methods and their indexes can also be configured. For example, the foregoing embodiments also provide different calculation methods for determining the value of the third power parameter; accordingly, more PRACHs can be configured in the terminal device according to different calculation methods for determining the value of the third power parameter. Candidate calculation methods and indexes for a target received power are not exhaustive here.

Example three,

In this example, the high-layer (such as MAC layer) and physical layer of the terminal device use different processing methods from those in the relevant protocols. The PRACH first target received power is determined at a higher level of the terminal equipment, and its specific determination method is the same as the foregoing Example 2, and the description will not be repeated here. The first power value is determined at the physical layer of the terminal device, and its specific determination method is the same as the aforementioned example one.

Regarding which of the above-mentioned calculation methods is specifically used for the PRACH first target received power, it may be pre-configured in the terminal device. The specific description is the same as the foregoing Example 2 and will not be described again. Alternatively, which of the above calculation methods is used by the terminal device to determine the PRACH first target received power may be instructed by the network device. The specific description is similar to the foregoing Example 2 and will not be repeated.

Which of the above calculation methods is used by the terminal device to determine the first power value may be pre-configured by the terminal device. The specific description is similar to the foregoing example 1 and will not be described again. Regarding the terminal device, multiple candidate calculation methods are preset, and the network device indicates an index of the calculation method, so that the terminal device determines the calculation method to calculate the first power value. This is also similar to the aforementioned example 1 and will not be described again.

It should be noted that in this example, terminal device preconfiguration and network device indication methods can be used in combination. For example, a calculation method for the first target received power of PRACH may be pre-configured on the terminal device, and the network device may indicate the calculation method for the first power value; for example, the network device may indicate the calculation method for the first target received power of PRACH. , and a calculation method for configuring the first power value in the terminal device. Of course, the calculation method of the first target received power of PRACH and the calculation method of the first power value can both be preconfigured by the terminal equipment, or both can be instructed by the network equipment. Both are within the protection scope of this embodiment, but do not make a Let’s not go into details.

In some possible implementations,

The enhanced transmission power is the minimum value of the first power value and the maximum transmission power of the terminal device; wherein the first power value is determined based on a power parameter.

The enhanced transmission power can be expressed by the following formula:

Although this embodiment determines the first power value based on the power parameter in the same way as the previous embodiment, the specific usage of the power parameter in this embodiment is different from that in the previous embodiment, which will be described below:

The power parameter includes a fourth power parameter; the fourth power parameter is used to replace the second parameter in the first parameter; the fourth power parameter includes at least one of the following: preamble target reception enhancement power, Power adjustment enhancement step size, preamble format enhancement offset.

The first power value is determined based on the fourth power parameter and parameters other than the second parameter among the first parameters.

Here, the method of obtaining the first parameter is the same as in the previous embodiment, and no repeated description will be given.

More specifically, the first power value is equal to the PRACH second target received power plus path loss; wherein the PRACH second target received power is based on the value of the fourth power parameter and the first parameter. The values of parameters other than the second parameter are determined.

The specific processing of the terminal device calculating the enhanced transmission power may include: the higher layer of the terminal device uses the fourth power parameter to replace the second parameter in the first parameter; the higher layer of the terminal device uses the corresponding value of the fourth power parameter, and the third Calculate the corresponding values of the remaining parameters in one parameter except the second parameter to obtain the PRACH second target received power; the higher layer of the terminal equipment transmits the PRACH second target received power to the physical layer of the terminal equipment; The physical layer of the terminal device adds the PRACH second target received power and the path calculation to obtain the first power value, and then selects a minimum value from the first power value and the maximum transmit power of the terminal device as the enhanced transmission power.

Using this example, there is no need to adjust the physical layer of the terminal equipment, and the processing specified by the relevant protocols can still be used. However, at the higher level of the terminal equipment, parameters different from those specified in the relevant protocols are used to calculate the PRACH target received power.

The fourth power parameter includes at least one of the following: preamble target reception enhancement power, power adjustment enhancement step size, and preamble format enhancement offset.

Correspondingly, in the case where the fourth power parameter includes the above different parameters, one or more second parameters in the replaced first parameters and their values may respectively be: the fourth power parameter includes the preamble target. When receiving enhanced power, the second parameter includes a preamble target received power; wherein the value of the preamble target received enhanced power is greater than the value of the preamble target received power; and/or, When the fourth power parameter includes a power adjustment enhancement step size, the second parameter includes a power adjustment step size; wherein the value of the power adjustment enhancement step size is greater than the value of the power adjustment step size; And/or, when the fourth power parameter includes a preamble format enhancement offset, the second parameter includes a preamble format offset; wherein the value of the preamble format enhancement offset is greater than the The value of the preamble format offset.

For example, if the fourth power parameter includes the preamble target reception enhancement power (for example, expressed as preambleReceivedTargetPowerEnhance), the preamble target reception power in the original first parameter can be replaced (for example, it is expressed as preambleReceivedTargetPower in the aforementioned embodiment), And the value of the preamble target reception enhancement power is greater than the value of the preamble target reception power. In this case, the higher layer of the terminal equipment can use the following formula to calculate the PRACH second target received power:

PREAMBLE_RECEIVED_TARGET_POWER2＝preambleReceivedTargetPowerEnhance+DELTA_PREAMBLE+(PREAMBLE_POWER_RAMPING_COUNTER-1)×PREAMBLE_POWER_RAMPING_STEP+POWER_OFFSET_2STEP_RA

Among them, preambleReceivedTargetPowerEnhance is the preamble target reception enhancement power, PREAMBLE_RECEIVED_TARGET_POWER2 is the PRACH second target reception power, and the description of other parameters is the same as the previous embodiment and will not be repeated.

For another example, when the fourth power parameter includes the preamble target reception enhancement power, the preamble target reception power in the original first parameter can be replaced, wherein the value of the preamble target reception enhancement power , greater than the value of the preamble target received power; when the fourth power parameter includes a power adjustment enhancement step, the power adjustment step in the original first parameter can be replaced, and the power adjustment enhancement step The long value is greater than the value of the power adjustment step size. In this case, the higher layer of the terminal equipment can use the following formula to calculate the PRACH second target received power:

PREAMBLE_RECEIVED_TARGET_POWER2＝preambleReceivedTargetPowerEnhance+DELTA_PREAMBLE+(PREAMBLE_POWER_RAMPING_COUNTER-1)×PREAMBLE_POWER_RAMING_STEP_ENHANCE+POWER_OFFSET_2STEP_RA

Among them, preambleReceivedTargetPowerEnhance is the preamble target reception enhancement power, PREAMBLE_POWER_RAMING_STEP_ENHANCE is the power adjustment enhancement step size; PREAMBLE_RECEIVED_TARGET_POWER2 is the PRACH second target reception power. The description of other parameters is the same as in the previous embodiment and will not be repeated.

The physical layer of the terminal equipment adds the second target received power of PRACH and the path calculation to obtain the first power value, which can be expressed as: P ₁ =P _{PRACH,target2} +PL _b,f,c ; where, P _{PRACH,target2} is PRACH second target received power, PL _{b, f, c} is the path loss.

The physical layer of the terminal device selects a minimum value from the first power value and the maximum transmit power of the terminal device as a process to enhance the transmission power, which is the same as the previous embodiment and will not be described again.

In some possible implementations,

In this embodiment, some of the aforementioned first parameters may remain configured using the configuration method of the relevant protocol; while the other part of the first parameters are the power parameters provided by this embodiment. The power parameters configured in this embodiment You can keep using the name in the relevant protocol, but configure multiple values for the power parameter, and the smallest value is used when PRACH enhanced transmission is not performed. That is to say, there is no need to adjust the processing method (or calculation method) of the physical layer of the terminal device. It is enough to still use the processing specified by the relevant protocol. However, at the higher level of the terminal device, different options for the same parameters specified in the relevant protocol are used. value, which value is used to calculate the PRACH target received power based on whether enhanced transmission of PRACH is currently performed.

Wherein, the power parameter includes a fifth power parameter; the value of the fifth power parameter includes: a first value and a second value of the fifth power parameter; wherein the first value is greater than the Describe the second value. The first power value is determined based on the first value of the fifth power parameter.

When the terminal equipment does not transmit the PRACH based on the enhanced transmission power, the second value of the fifth power parameter is used to determine the first transmission power; wherein the first transmission power is smaller than the enhanced transmission power.

That is to say, the second value of the fifth power parameter can be used to determine the second transmission power when PRACH enhanced transmission is not performed. The first value of the fifth power parameter is used to determine the enhanced transmission power when performing enhanced transmission of PRACH.

In one example, the number of the aforementioned fifth power parameters is the same as the number of the first parameters in the aforementioned other embodiments. That is to say, all the aforementioned first parameters are configured with two values. The higher layer of the terminal equipment can determine which value of each fifth power parameter to use for processing depending on whether enhanced transmission of PRACH is currently required.

In yet another example, the number of the aforementioned fifth power parameters is smaller than the number of the first parameters in the aforementioned other embodiments. That is to say, there may be some parameters among all the aforementioned first parameters that remain configured using the configuration method of the relevant protocol. This part of the first parameter has only one value.

In this example, the processing of the network device may further include: the network device sending second configuration information to the terminal device, the second configuration information including some of the first parameters; the terminal device The processing may further include: the terminal device receiving second configuration information, where the second configuration information includes some of the first parameters.

Wherein, when the terminal equipment does not transmit PRACH based on enhanced transmission power, the first transmission power is determined by using the values of some parameters in the first parameters and the second value of the aforementioned fifth power parameter; wherein, The first transmission power is used to transmit PRACH; the first transmission power is smaller than the enhanced transmission power.

When the terminal equipment transmits the PRACH based on the enhanced transmission power, the enhanced transmission power is the minimum value of the first power value and the maximum transmission power of the terminal equipment; the first power value is based on the third power value. The first values of the five power parameters and the values of some of the first parameters are determined.

More specifically, the first power value is equal to the third target received power of PRACH plus path loss; wherein the third target received power of PRACH is based on the first value of the fifth power parameter and the third The values of some parameters in a parameter are determined.

The fifth power parameter may include at least one of the following: preamble target received power, power adjustment step size, and preamble format offset. Correspondingly, in the case where the fifth power parameter includes the above different parameters, some of the parameters in the first parameter included in the second configuration information may not include the corresponding parameters, specifically: the fifth power parameter When the preamble target received power is included in the second configuration information, some of the parameters included in the first parameters do not include the preamble target received power;

And/or, when the fifth power parameter includes a power adjustment step size, some of the parameters included in the first parameters in the second configuration information do not include the power adjustment step size;

And/or, when the fifth power parameter includes a preamble format offset, some of the parameters included in the first parameters in the second configuration information do not include the preamble format offset.

For example, when the fifth power parameter includes the preamble target received power, the second configuration information includes some parameters in the first parameters that do not include the preamble target received power (such as the previous embodiment). This is represented as preambleReceivedTargetPower) in .

In this case, if the higher layer of the terminal equipment determines to perform enhanced transmission of PRACH, when determining the enhanced transmission power, the following formula can be used to calculate the third target received power of PRACH:

PREAMBLE_RECEIVED_TARGET_POWER3＝preambleReceivedTargetPower ₁ +DELTA_PREAMBLE+(PREAMBLE_POWER_RAMPING_COUNTER-1)×PREAMBLE_POWER_RAMPING_STEP+POWER_OFFSET_2STEP_RA

in,

That is, the first value of the preamble target received power, PREAMBLE_RECEIVED_TARGET_POWER3, which is the third target received power of PRACH; the second configuration information includes some parameters in the first parameters, which may include DELTA_PREAMBLE in the above formula, which is the preamble format bias. Set value, PREAMBLE_POWER_RAMPING_STEP is the preamble power adjustment growth step, POWER_OFFSET_2STEP_RA is the 2-step random access power offset.

If the higher layer of the terminal equipment determines not to perform PRACH enhanced transmission, the following formula can be used to calculate the PRACH target received power:

PREAMBLE_RECEIVED_TARGET_POWER＝preambleReceivedTargetPower ₂ +DELTA_PREAMBLE+(PREAMBLE_POWER_RAMPING_COUNTER-1)×PREAMBLE_POWER_RAMPING_STEP+POWER_OFFSET_2STEP_RA

Among them, preambleReceivedTargetPower ₂ is the second value of the preamble target received power,

That is, the PRACH target received power, and the description of other parameters is the same as in the previous embodiment, and will not be described again.

The above example only takes the fifth power parameter as the preamble target received power as an example. In actual processing, in addition to the preamble target received power, the fifth power parameter can also include PREAMBLE_POWER_RAMPING_STEP, etc., which will not be done here. Let’s go over them one by one.

The above various implementations all use power parameters to perform relevant calculations at the physical layer of the terminal device and/or at the upper layer of the terminal device to determine the method of enhancing the transmission power.

This application also provides other possible implementations, which do not require the use of power parameters for calculation. The enhanced transmission power can be equal to the maximum transmission power of the terminal device. This implementation manner can reduce the occupation of processing resources of the terminal device, so that the terminal device determines to improve the processing efficiency of enhancing the transmission power.

Optionally, the aforementioned first information may only be used to instruct the terminal device to send PRACH based on enhanced transmission power. That is, the terminal device does not need to save the power parameters in advance, and the network device does not need to carry the power parameters in the first information and/or the second information. As long as the terminal device receives the first information, and the first information is used to instruct the terminal device to transmit PRACH based on enhanced transmission power, the terminal device can use the maximum transmit power of the terminal device as the enhanced transmission each time it transmits PRACH. power. For example, it can be expressed as: P _{PRACH-PowerEnhance} = P _CMAX,f,c (i); where P _{PRACH-PowerEnhance} is the enhanced transmission power; P _CMAX,f,c (i) represents the maximum transmission power of the terminal device.

In addition, if the terminal device does not receive the first information, the first transmission power is used to transmit the PRACH. The method for determining the first transmission power is the same as the previous embodiment, and will not be described again.

Optionally, the aforementioned first information may only be used to instruct the terminal device to send PRACH based on enhanced transmission power. That is, the terminal device does not need to save the power parameters in advance, and the network device does not need to carry the power parameters in the first information and/or the second information. However, the terminal equipment can further determine whether to send PRACH based on enhanced transmission power based on the second condition. Specifically, when the second condition is met, the terminal equipment sends PRACH based on the enhanced transmission power; the second condition includes at least one of the following: the downlink signal detection result is less than the first threshold; the last transmission PRACH and no response information was received; the number of PRACH transmissions reached the threshold.

Here, the second condition is different from the aforementioned first condition only in that the second condition does not include a valid value of the power parameter. The detailed description of each other condition in the second condition is the same as the aforementioned first condition and will not be repeated.

That is to say, when the terminal device determines that the aforementioned second condition is met, it can directly use its own maximum transmission power as the enhanced transmission power, and send the PRACH based on the enhanced transmission power. If the terminal equipment determines that the aforementioned second condition is not met, the first transmission power needs to be used to transmit the PRACH. The method for determining the first transmission power is the same as the previous embodiment, and will not be described again.

Optionally, the aforementioned first information may be used to instruct the terminal device to send PRACH based on enhanced transmission power. The terminal device may also save the power parameters in advance, and/or the network device may carry the power parameters in the first information and/or the second information. For example, you can pre-configure the method used by the terminal device to determine the enhanced transmission power. Assume that the user has configured the terminal device in use to use the maximum transmit power of the terminal device as the enhanced transmission power. The network device may not know it. At this time, the network device The first information and/or the second information can be sent in the original configuration mode; on the terminal device side, according to the user's configuration, the received power parameter can also be directly discarded, and the maximum transmit power of the terminal device is directly used as the enhanced transmission power.

The foregoing embodiment of this embodiment provides multiple implementation methods for determining enhanced transmission power. In actual processing, the network device can instruct the terminal device which specific method to use to determine the enhanced transmission power, or the user can directly configure which specific method to use. Determining the enhanced transmission power is within the protection scope of this embodiment.

The solution provided by this embodiment enables the terminal equipment to use enhanced transmission power when initially transmitting PRACH, which can improve the transmission performance of PRACH, especially when the PRACH coverage performance is determined to be poor based on the downlink signal measurement results. PRACH uses greater enhanced transmission power than traditional PRACH transmission, which can improve PRACH coverage, transmission performance and reduce delay; and the solution provided in this embodiment can also be applied to more scenarios, which can be It is used in scenarios such as when the last PRACH transmission failed and needs to be retransmitted, or when it is a high-priority PRACH transmission. This can be used in a variety of scenarios by using greater enhanced transmission power compared to traditional PRACH transmission. PRACH coverage, transmission performance and delay reduction.

It can be seen that by adopting the solution provided by this embodiment, the terminal device receives the first information, and through the first information, it can be determined to use enhanced transmission power to transmit the PRACH. In this way, PRACH can be transmitted with greater transmission power, thereby improving PRACH coverage, reducing the number of PRACH transmissions to reduce access delay, and ultimately improving PRACH transmission performance.

Figure 7 is a schematic block diagram of a terminal device according to an embodiment of the present application. The terminal equipment may include:

The first communication unit 701 is configured to receive first information; wherein the first information is used by the terminal device to determine to transmit the physical random access channel PRACH based on enhanced transmission power.

The first information is used to instruct the terminal equipment to determine to send the PRACH based on the enhanced transmission power.

The first information is used to indicate the value of a power parameter, and the power parameter is used to determine the enhanced transmission power.

The first communication unit is configured to receive second information, the second information is used to indicate the value of a power parameter, and the power parameter is used to determine the enhanced transmission power.

On the basis of Figure 7, as shown in Figure 8, the terminal device also includes:

The first processing unit 702 is configured to determine the enhanced transmission power based on the power parameter when the first condition is met, and send the PRACH through the first communication unit based on the enhanced transmission power; wherein the first condition includes the following At least one of: the value of the power parameter is a valid value; the downlink signal detection result is less than the first threshold; the PRACH was sent last time and no response information was received; the number of PRACH transmissions reaches the number threshold.

The first threshold value is preset, or determined by the terminal device, or configured by the network device.

When the first threshold is configured for network equipment, it is carried by one of the following: feature combination preamble; random access channel RACH public configuration parameters; public configuration parameters of message msg A; beam failure recovery configuration; RACH public msg A configuration parameter in the configuration parameters.

When the first threshold value is determined by the terminal device, the first threshold value is determined based on the second threshold value; wherein the second threshold value is configured by the network device.

The first communication unit is configured to receive first configuration information, where the first configuration information includes a first parameter used to determine a first transmission power; the first transmission power is smaller than the enhanced transmission power.

The first power value is determined based on the power parameter, PRACH first target received power and path loss.

The power parameter includes a first power parameter, and the value of the first power parameter is greater than 1; the first power value is equal to one of the following: the difference between the PRACH first target received power and the first power parameter. After the value is multiplied, it is added to the path loss; after the path loss is multiplied by the value of the first power parameter, it is added to the PRACH first target received power; the PRACH first target After the received power is added to the path loss, it is multiplied by the value of the first power parameter.

The value of the first power parameter is one of the following: based on the number of PRACH transmissions, determined from a plurality of first candidate values; wherein the plurality of first candidate values are greater than 1; based on the first The reference value of the power parameter and the first adjustment amount are determined based on the number of PRACH transmissions and the first preset step size; wherein, the reference value of the first power parameter and/ Or the first preset step size is greater than 1; the first preset step size is preset or configured by the network device.

The power parameter includes a second power parameter; the first power value is equal to the sum of the PRACH first target received power, the value of the second power parameter and the path loss; the second power parameter The value is greater than 0.

The value of the second power parameter is one of the following:

The number of transmissions based on PRACH is determined from a plurality of second candidate values; wherein the plurality of second candidate values are greater than 0;

Determined based on the reference value of the second power parameter and the second adjustment amount, the second adjustment amount is determined based on the number of PRACH transmissions and the second preset step size; wherein, the reference value of the second power parameter The value and/or the second preset step size is greater than 0; the second preset step size is preset or configured by the network device.

The PRACH first target received power is equal to the sum of the calculation result of the first parameter and the value of the third power parameter; wherein the value of the third power parameter is greater than 0.

The value of the third power parameter is one of the following: based on the number of PRACH transmissions, determined from a plurality of third candidate values; wherein the plurality of third candidate values are greater than 0; based on the third The first reference value of the power parameter and the third adjustment amount are determined, and the third adjustment amount is determined based on the number of PRACH transmissions and the third preset step size; wherein, the first reference value of the third power parameter The value and/or the third preset step size is greater than 0; the third preset step size is preset or configured by the network device.

The PRACH first target received power is obtained by multiplying the value of the third power parameter and at least part of the first parameters.

The value of the third power parameter is one of the following: based on the number of PRACH transmissions, determined from a plurality of fourth candidate values; wherein the plurality of fourth candidate values are greater than 1; based on the third The second reference value of the power parameter and the fourth adjustment amount are determined, and the fourth adjustment amount is determined based on the number of PRACH transmissions and the fourth preset step size; wherein, the second reference value of the third power parameter The value and/or the fourth preset step size is greater than 1; the fourth preset step size is preset or configured by the network device.

When the fourth power parameter includes a preamble target received enhanced power, the second parameter includes a preamble target received power; wherein the value of the preamble target received enhanced power is greater than the preamble target received power. The value of The value of the power adjustment step; and/or, when the fourth power parameter includes a preamble format enhancement offset, the second parameter includes a preamble format offset; wherein the preamble format enhancement offset The value of the shift is greater than the value of the preamble format offset.

The power parameter includes a fifth power parameter; the value of the fifth power parameter includes: a first value and a second value of the fifth power parameter; wherein the first value is greater than the third value. Two values.

The first power value is determined based on the first value of the fifth power parameter.

When the PRACH is not transmitted based on the enhanced transmission power, the second value of the fifth power parameter is used to determine the first transmission power; wherein the first transmission power is smaller than the enhanced transmission power.

The fifth power parameter includes at least one of the following: preamble target received power, power adjustment step size, and preamble format offset.

The enhanced transmission power is equal to the maximum transmission power of the terminal device.

The terminal device in the embodiment of the present application can implement the corresponding functions of the terminal device in the foregoing method embodiment. For the corresponding processes, functions, implementation methods and beneficial effects of each module (sub-module, unit or component, etc.) in the terminal device, please refer to the corresponding description in the above method embodiment, and will not be described again here. It should be noted that the functions described for each module (sub-module, unit or component, etc.) in the terminal device of the application embodiment can be implemented by different modules (sub-module, unit or component, etc.), or can be implemented by the same module. (Submodule, unit or component, etc.) implementation.

Figure 9 is a schematic block diagram of a network device according to an embodiment of the present application. This network equipment can include:

The second communication unit 901 is configured to send first information; wherein the first information is used by the terminal device to determine to send the physical random access channel PRACH based on enhanced transmission power.

The first information includes instructions for instructing the terminal device to send PRACH based on the enhanced transmission power.

The second communication unit is configured to send second information, the second information is used to indicate the value of a power parameter, and the power parameter is used to determine the enhanced transmission power.

The second communication unit is configured to configure a first threshold value to the terminal equipment; the first threshold value is used by the terminal equipment to judge the downlink signal detection result to determine whether to use enhanced transmission power to transmit the PRACH; Wherein, the first threshold value is carried by one of the following: feature combination preamble; random access channel RACH public configuration parameters; public configuration parameters of message msg A; beam failure recovery configuration; msg in RACH public configuration parameters A configuration parameters;

And/or, the second communication unit is configured to configure a second threshold value to the terminal device, and the second threshold value is used by the terminal device to determine the first threshold value.

The second communication unit is configured to send first configuration information to the terminal device, where the first configuration information includes a first parameter used to determine the first transmission power; the first transmission power is less than the enhanced Transmit power.

The power parameter includes a first power parameter, and the value of the first power parameter is greater than 1.

The second communication unit is used to configure a plurality of first candidate values corresponding to the first power parameter for the terminal device, and the plurality of first candidate values are used for the terminal device to determine the first power parameter. Value; wherein, the multiple first candidate values are greater than 1;

Alternatively, the second communication unit is used to configure the reference value of the first power parameter and the first preset step size for the terminal device; the reference value of the first power parameter and the first preset step size. , used by the terminal device to determine the value of the first power parameter; wherein the reference value of the first power parameter and/or the first preset step size is greater than 1.

The power parameter includes a second power parameter; the value of the second power parameter is greater than 0. The second power parameter corresponds to a plurality of second candidate values; the plurality of second candidate values are used by the terminal device to determine the value of the second power parameter; wherein, the plurality of second candidate values Greater than 0.

The power parameters include: a third power parameter.

The value of the third power parameter is greater than 0. The second communication unit is used to configure a plurality of second candidate values corresponding to the second power parameter for the terminal device; the plurality of second candidate values are used for the terminal device to determine the second power parameter. value; wherein the plurality of second candidate values are greater than 0; or, the second communication unit is used to configure the reference value and the second preset step size of the second power parameter for the terminal device; the The reference value of the second power parameter and the second preset step size are used by the terminal device to determine the value of the second power parameter; wherein the reference value of the second power parameter and/or the The second preset step size is greater than 0.

The value of the third power parameter is greater than 1. The second communication unit is used to configure a plurality of fourth candidate values corresponding to the third power parameter for the terminal device; the plurality of fourth candidate values are used for the terminal device to determine the third power parameter. value; wherein the plurality of fourth candidate values are greater than 1; or the second communication unit is used to configure the second reference value and the fourth preset step size of the third power parameter for the terminal device; The second reference value of the third power parameter and the fourth preset step size are used by the terminal device to determine the value of the third power parameter; wherein the second reference value of the third power parameter The value and/or the fourth preset step size is greater than 1.

The power parameter includes a fourth power parameter; the fourth power parameter is used to replace the second parameter in the first parameter; wherein the fourth power parameter includes at least one of the following: preamble target reception enhancement Power, power adjustment enhancement step size, preamble format enhancement offset.

The network device in the embodiment of the present application can implement the corresponding functions of the network device in the foregoing method embodiment. For the corresponding processes, functions, implementation methods and beneficial effects of each module (sub-module, unit or component, etc.) in the network device, please refer to the corresponding description in the above method embodiment, and will not be described again here. It should be understood that, although not shown in Figure 9, the network device may also include a second processing unit, which may be used to process and generate the aforementioned first information, second information, first configuration information, etc., It can also perform demodulation and other processing on the information or data sent from the terminal device, but will not be described in detail. It should be noted that the functions described for each module (sub-module, unit or component, etc.) in the network device of the application embodiment can be implemented by different modules (sub-module, unit or component, etc.), or can be implemented by the same module. (Submodule, unit or component, etc.) implementation.

Figure 10 is a schematic structural diagram of a communication device 1000 according to an embodiment of the present application. The communication device 1000 includes a processor 1010, and the processor 1010 can call and run a computer program from the memory, so that the communication device 1000 implements the method in the embodiment of the present application.

In one implementation, communication device 1000 may also include memory 1020. The processor 1010 can call and run the computer program from the memory 1020, so that the communication device 1000 implements the method in the embodiment of the present application. The memory 1020 may be a separate device independent of the processor 1010, or may be integrated into the processor 1010.

In one implementation, the communication device 1000 may further include a transceiver 1030, and the processor 1010 may control the transceiver 1030 to communicate with other devices. Specifically, the communication device 1000 may send information or data to other devices, or receive information sent by other devices. information or data. Among them, the transceiver 1030 may include a transmitter and a receiver. The transceiver 1030 may further include an antenna, and the number of antennas may be one or more.

In one implementation, the communication device 1000 can be a terminal device according to the embodiment of the present application, and the communication device 1000 can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, this is not mentioned here. Again.

In one implementation, the communication device 1000 can be a network device according to the embodiment of the present application, and the communication device 1000 can implement the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of simplicity, these processes are not mentioned here. Again.

Figure 11 is a schematic structural diagram of a chip 1100 according to an embodiment of the present application. The chip 1100 includes a processor 1110, and the processor 1110 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

In one implementation, chip 1100 may also include memory 1120 . The processor 1110 can call and run the computer program from the memory 1120 to implement the method executed by the terminal device or network device in the embodiment of the present application. The memory 1120 may be a separate device independent of the processor 1110, or may be integrated into the processor 1110.

In one implementation, the chip 1100 may also include an input interface 1130. The processor 1110 can control the input interface 1130 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

In one implementation, the chip 1100 may also include an output interface 1140. The processor 1110 can control the output interface 1140 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.

In one implementation, the chip can be applied to the terminal device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, details will not be repeated here. .

In one implementation, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of simplicity, they will not be described again. .

The chips used in terminal equipment and network equipment can be the same chip or different chips. It should be understood that the chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.

The processor mentioned above can be a general-purpose processor, a digital signal processor (DSP), an off-the-shelf programmable gate array (FPGA), an application specific integrated circuit (ASIC), or Other programmable logic devices, transistor logic devices, discrete hardware components, etc. The above-mentioned general processor may be a microprocessor or any conventional processor.

The memory mentioned above may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM).

It should be understood that the above memory is an exemplary but not restrictive description. For example, the memory in the embodiment of the present application can also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, memories in embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

Figure 12 is a schematic block diagram of a communication system 1200 according to an embodiment of the present application. The communication system 1200 includes a terminal device 1210 and a network device 1220. The terminal device 1210 is used to perform the above communication method; the network device 1220 is used to perform the above communication method. The terminal device 1210 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1220 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, no further details will be given here.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using 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 according to the embodiments of the present application are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted over a wired connection from a website, computer, server, or data center (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means to transmit to another website, computer, server or data center. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. The available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), etc.

It should be understood that in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present application. are covered by the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of this claim.

Claims

A method of communication including:

The terminal equipment receives first information; wherein the first information is used by the terminal equipment to determine to transmit the physical random access channel PRACH based on enhanced transmission power.
The method according to claim 1, wherein the first information is used to instruct the terminal device to determine to transmit the PRACH based on the enhanced transmission power.
The method according to claim 1 or 2, wherein the first information is used to indicate a value of a power parameter, and the power parameter is used to determine the enhanced transmission power.
The method of claim 2, further comprising:

The terminal device receives second information, the second information is used to indicate the value of a power parameter; the power parameter is used to determine the enhanced transmission power.
The method according to any one of claims 2-4, wherein after the terminal device receives the first information, the method further includes:

When the first condition is met, the terminal device determines the enhanced transmission power based on a power parameter, and sends the PRACH based on the enhanced transmission power;

Wherein, the first condition includes at least one of the following:

The value of the power parameter is a valid value;

The downlink signal detection result is less than the first threshold;

PRACH was sent last time and no response information was received;

The number of PRACH transmissions reaches the number threshold.
The method according to claim 5, wherein the first threshold value is preset, or determined by a terminal device, or configured by a network device.
The method according to claim 6, wherein when the first threshold value is configured by a network device, it is carried by one of the following: feature combination preamble; random access channel RACH public configuration parameters; message msg A Public configuration parameters; beam failure recovery configuration; msg A configuration parameters in RACH public configuration parameters.
The method according to claim 6, wherein when the first threshold value is determined by a terminal device, the first threshold value is determined based on a second threshold value; wherein the second threshold value Limits are configured for network devices.
The method according to claim 5, wherein the downlink signal detection result is obtained by measuring the downlink signal corresponding to the downlink beam of the terminal equipment; or, the downlink signal corresponding to the designated downlink beam of the terminal equipment. Obtained from signal measurement; or obtained from the specified downlink signal corresponding to the specified downlink beam of the terminal equipment.
The method according to any one of claims 2-5, wherein the enhanced transmission power is the minimum value of the first power value and the maximum transmission power of the terminal device;

Wherein, the first power value is determined based on power parameters.
The method of claim 10, wherein the method further includes:

The terminal device receives first configuration information, where the first configuration information includes a first parameter used to determine a first transmission power; the first transmission power is smaller than the enhanced transmission power.
The method according to claim 10, wherein the first power value is determined based on the power parameter, PRACH first target received power and path loss.
The method according to claim 12, wherein the power parameter includes a first power parameter; the value of the first power parameter is greater than 1; the first power value is equal to one of the following:

The PRACH first target received power is multiplied by the value of the first power parameter and then added to the path loss;

After the path loss is multiplied by the value of the first power parameter, it is added to the PRACH first target received power;

After the PRACH first target received power is added to the path loss, it is multiplied by the value of the first power parameter.
The method according to claim 13, wherein the value of the first power parameter is one of the following:

The number of transmissions based on PRACH is determined from a plurality of first candidate values; wherein the plurality of first candidate values are greater than 1;

Determined based on the reference value of the first power parameter and the first adjustment amount, the first adjustment amount is determined based on the number of PRACH transmissions and the first preset step size; wherein, the reference value of the first power parameter The value and/or the first preset step size is greater than 1; the first preset step size is preset or configured by the network device.
The method according to claim 12, wherein the power parameter includes a second power parameter; the first power value is equal to the PRACH first target received power, the value of the second power parameter and the The path losses are added together; the value of the second power parameter is greater than 0.
The method according to claim 15, wherein the value of the second power parameter is one of the following:

The number of transmissions based on PRACH is determined from a plurality of second candidate values; wherein the plurality of second candidate values are greater than 0;

Determined based on the reference value of the second power parameter and the second adjustment amount, the second adjustment amount is determined based on the number of PRACH transmissions and the second preset step size; wherein, the reference value of the second power parameter The value and/or the second preset step size is greater than 0; the second preset step size is preset or configured by the network device.
The method according to claims 11-16, wherein the power parameter includes a third power parameter; wherein the third power parameter is used to determine the PRACH first target received power; the PRACH first target received power is to determine the first power value.
The method according to claim 17, wherein the PRACH first target received power is determined based on the first parameter and the third power parameter.
The method according to claim 18, wherein the PRACH first target received power is equal to the sum of the calculation result of the first parameter and the value of the third power parameter; wherein the third power parameter The value is greater than 0.
The method according to claim 19, wherein the value of the third power parameter is one of the following:

The number of transmissions based on PRACH is determined from a plurality of third candidate values; wherein the plurality of third candidate values are greater than 0;

Determined based on the first reference value of the third power parameter and the third adjustment amount, the third adjustment amount is determined based on the number of PRACH transmissions and the third preset step size; wherein, the third power parameter The first reference value and/or the third preset step size is greater than 0; the third preset step size is preset or configured by the network device.
The method according to claim 18, wherein the PRACH first target received power is obtained based on a value of the third power parameter multiplied by at least part of the first parameters.
The method according to claim 21, wherein the value of the third power parameter is one of the following:

The number of transmissions based on PRACH is determined from a plurality of fourth candidate values; wherein the plurality of fourth candidate values are greater than 1;

Determined based on the second reference value of the third power parameter and the fourth adjustment amount, the fourth adjustment amount is determined based on the number of PRACH transmissions and the fourth preset step size; wherein, the third power parameter The second reference value and/or the fourth preset step size is greater than 1; the fourth preset step size is preset or configured by the network device.
The method of claim 11, wherein the power parameter includes a fourth power parameter; the fourth power parameter is used to replace a second parameter in the first parameter;

The fourth power parameter includes at least one of the following: preamble target reception enhancement power, power adjustment enhancement step size, and preamble format enhancement offset.
The method according to claim 23, wherein the first power value is determined based on parameters of the fourth power parameter and the first parameter except the second parameter.
The method of claim 24, wherein the fourth power parameter includes a preamble target received enhanced power, the second parameter includes a preamble target received enhanced power; wherein the preamble target received enhanced power Greater than the preamble target received power;

And/or, when the fourth power parameter includes a power adjustment step size, the second parameter includes a power adjustment step size; wherein the power adjustment step size is greater than the power adjustment step size;

And/or, when the fourth power parameter includes a preamble format enhancement offset, the second parameter includes a preamble format offset; wherein the preamble format enhancement offset is greater than the preamble format offset. shift.
The method according to claim 10, wherein the power parameter includes a fifth power parameter; the value of the fifth power parameter includes: a first value and a second value of the fifth power parameter; wherein , the first value is greater than the second value.
The method of claim 26, wherein the first power value is determined based on the first value of the fifth power parameter.
The method according to claim 26, wherein when the terminal equipment does not transmit PRACH based on enhanced transmission power, the second value of the fifth power parameter is used to determine the first transmission power; wherein the third A transmission power is less than the enhanced transmission power.
The method according to any one of claims 26 to 28, wherein the fifth power parameter includes at least one of the following: preamble target received power, power adjustment step size, and preamble format offset.
The method according to claim 2, wherein the enhanced transmission power is equal to the maximum transmission power of the terminal device.
A method of communication including:

The network device sends first information; wherein the first information is used by the terminal device to determine to send the physical random access channel PRACH based on enhanced transmission power.
The method of claim 31, wherein the first information includes instructing the terminal device to transmit PRACH based on the enhanced transmission power.
The method according to claim 31 or 32, wherein the first information is used to indicate a value of a power parameter, and the power parameter is used to determine the enhanced transmission power.
The method of claim 32, wherein the method further includes:

The network device sends second information, where the second information is used to indicate the value of a power parameter; wherein the power parameter is used to determine the enhanced transmission power.
The method according to any one of claims 31-34, wherein the method further includes:

The network device configures a first threshold value to the terminal device; the first threshold value is used by the terminal device to judge the downlink signal detection result to determine whether to use enhanced transmission power to send the PRACH; wherein, the first threshold value A threshold value, carried by one of the following: feature combination preamble; random access channel RACH public configuration parameters; public configuration parameters of message msg A; beam failure recovery configuration; msg A configuration parameters in RACH public configuration parameters;

And/or, the network device configures a second threshold value to the terminal device, and the second threshold value is used by the terminal device to determine the first threshold value.
The method according to any one of claims 31-35, wherein the method further includes:

The network device sends first configuration information to the terminal device, where the first configuration information includes a first parameter used to determine a first transmission power; the first transmission power is smaller than the enhanced transmission power.
The method according to claim 33 or 34, wherein the power parameter includes a first power parameter, and the value of the first power parameter is greater than 1.
The method of claim 37, wherein the method further includes:

The network device configures a plurality of first candidate values corresponding to the first power parameter for the terminal device, and the plurality of first candidate values are used by the terminal device to determine the value of the first power parameter; wherein, The plurality of first candidate values are greater than 1;

Alternatively, the network device configures the reference value of the first power parameter and the first preset step size for the terminal device; the reference value of the first power parameter and the first preset step size are used for the terminal device. Determine the value of the first power parameter; wherein the reference value of the first power parameter and/or the first preset step is greater than 1.
The method according to claim 33 or 34, wherein the power parameter includes a second power parameter; the value of the second power parameter is greater than 0.
The method of claim 39, wherein the method further includes:

The network device configures a plurality of second candidate values corresponding to the second power parameter for the terminal device; the plurality of second candidate values are used by the terminal device to determine the value of the second power parameter; wherein, The plurality of second candidate values are greater than 0;

Alternatively, the network device configures the reference value of the second power parameter and the second preset step size for the terminal device; the reference value of the second power parameter and the second preset step size are used for the terminal device. Determine the value of the second power parameter; wherein the reference value of the second power parameter and/or the second preset step is greater than 0.
The method according to any one of claims 33, 34, 39 and 40, wherein the power parameter includes a third power parameter.
The method according to claim 41, wherein the value of the third power parameter is greater than 0.
The method of claim 42, wherein the method further includes:

The network device configures a plurality of third candidate values corresponding to the third power parameter for the terminal device; the plurality of third candidate values are used by the terminal device to determine the value of the third power parameter; wherein, The plurality of third candidate values are greater than 0;

Alternatively, the network device configures the first reference value and the third preset step size of the third power parameter for the terminal device; the first reference value and the third preset step size of the third power parameter, The terminal device is used to determine the value of the third power parameter; wherein the first reference value of the third power parameter and/or the third preset step is greater than 0.
The method of claim 41, wherein the third power parameter has a value greater than 1.
The method of claim 44, wherein the method further includes:

The network device configures a plurality of fourth candidate values corresponding to the third power parameter for the terminal device; the plurality of fourth candidate values are used by the terminal device to determine the value of the third power parameter; wherein, The plurality of fourth candidate values are greater than 1;

Alternatively, the network device configures the second reference value and the fourth preset step size of the third power parameter for the terminal device; the second reference value and the fourth preset step size of the third power parameter, The terminal device is used to determine the value of the third power parameter; wherein the second reference value of the third power parameter and/or the fourth preset step is greater than 1.
The method according to claim 33 or 34, wherein the power parameter includes a fourth power parameter; the fourth power parameter is used to replace a second parameter in the first parameter;

Wherein, the fourth power parameter includes at least one of the following: preamble target reception enhancement power, power adjustment enhancement step size, and preamble format enhancement offset.
The method of claim 33 or 34, wherein the power parameter includes a fifth power parameter;

The value of the fifth power parameter includes: a first value and a second value of the fifth power parameter; wherein the first value is greater than the second value.
The method according to claim 47, wherein the fifth power parameter includes at least one of the following: preamble target received power, power adjustment step size, and preamble format offset.
A terminal device including:

The first communication unit is configured to receive first information; wherein the first information is used by the terminal device to determine to send the physical random access channel PRACH based on enhanced transmission power.
The terminal equipment according to claim 49, wherein the first information is used to instruct the terminal equipment to determine to transmit the PRACH based on the enhanced transmission power.
The terminal device according to claim 49 or 50, wherein the first information is used to indicate a value of a power parameter, and the power parameter is used to determine the enhanced transmission power.
The terminal device according to claim 50, wherein the first communication unit is used to receive second information, the second information is used to indicate a value of a power parameter, and the power parameter is used to determine the enhanced Transmit power.
The terminal device according to any one of claims 50-52, wherein the terminal device further includes:

A first processing unit configured to determine the enhanced transmission power based on a power parameter when the first condition is met, and send the PRACH through the first communication unit based on the enhanced transmission power;

Wherein, the first condition includes at least one of the following: the value of the power parameter is a valid value; the downlink signal detection result is less than the first threshold value; the PRACH was sent last time and no response information was received; the number of PRACH transmissions The times threshold is reached.
The terminal device according to claim 53, wherein the first threshold value is preset, determined by the terminal device, or configured by the network device.
The terminal device according to claim 54, wherein when the first threshold value is a network device configuration, it is carried by one of the following: feature combination preamble; random access channel RACH public configuration parameters; message msg A public configuration parameters; beam failure recovery configuration; msg A configuration parameters in RACH public configuration parameters.
The terminal device according to claim 54, wherein when the first threshold value is determined by the terminal device, the first threshold value is determined based on a second threshold value; wherein the second threshold value The threshold value is configured by the network device.
The terminal equipment according to claim 53, wherein the downlink signal detection result is obtained by measuring the downlink signal corresponding to the downlink beam of the terminal equipment; or, the downlink signal corresponding to the designated downlink beam of the terminal equipment. Obtained from downlink signal measurement; or obtained from the specified downlink signal corresponding to the specified downlink beam of the terminal equipment.
The terminal equipment according to any one of claims 50 to 53, wherein the enhanced transmission power is the minimum value of a first power value and a maximum transmission power of the terminal equipment; wherein the first power value , determined based on power parameters.
The terminal device according to claim 58, wherein the first communication unit is configured to receive first configuration information, the first configuration information includes a first parameter for determining the first transmission power; A transmission power is less than the enhanced transmission power.
The terminal equipment according to claim 58, wherein the first power value is determined based on the power parameter, PRACH first target received power and path loss.
The terminal device according to claim 60, wherein the power parameter includes a first power parameter, the value of the first power parameter is greater than 1; the first power value is equal to one of the following: the PRACH th After a target received power is multiplied by the value of the first power parameter, it is added to the path loss; after the path loss is multiplied by the value of the first power parameter, it is added to the first value of the PRACH. The target received power is added; after the PRACH first target received power is added to the path loss, it is multiplied by the value of the first power parameter.
The terminal device according to claim 61, wherein the value of the first power parameter is one of the following:

The number of transmissions based on PRACH is determined from a plurality of first candidate values; wherein the plurality of first candidate values are greater than 1;

Determined based on the reference value of the first power parameter and the first adjustment amount, the first adjustment amount is determined based on the number of PRACH transmissions and the first preset step size; wherein, the reference value of the first power parameter The value and/or the first preset step size is greater than 1; the first preset step size is preset or configured by the network device.
The terminal equipment according to claim 60, wherein the power parameter includes a second power parameter; the first power value is equal to the PRACH first target received power, the value of the second power parameter and the The path losses are added together; the value of the second power parameter is greater than 0.
The terminal device according to claim 63, wherein the value of the second power parameter is one of the following:

The number of transmissions based on PRACH is determined from a plurality of second candidate values; wherein the plurality of second candidate values are greater than 0;

Determined based on the reference value of the second power parameter and the second adjustment amount, the second adjustment amount is determined based on the number of PRACH transmissions and the second preset step size; wherein, the reference value of the second power parameter The value and/or the second preset step size is greater than 0; the second preset step size is preset or configured by the network device.
The terminal equipment according to any one of claims 59-64, wherein the power parameter includes a third power parameter; wherein the third power parameter is used to determine the first target received power of PRACH; the first PRACH The target received power is used to determine the first power value.
The terminal equipment according to claim 65, wherein the PRACH first target received power is determined based on the first parameter and the third power parameter.
The terminal equipment according to claim 66, wherein the PRACH first target received power is equal to the sum of the calculation result of the first parameter and the value of the third power parameter; wherein the third power The value of the parameter is greater than 0.
The terminal device according to claim 67, wherein the value of the third power parameter is one of the following:

The number of transmissions based on PRACH is determined from a plurality of third candidate values; wherein the plurality of third candidate values are greater than 0;

Determined based on the first reference value of the third power parameter and the third adjustment amount, the third adjustment amount is determined based on the number of PRACH transmissions and the third preset step size; wherein, the third power parameter The first reference value and/or the third preset step size is greater than 0; the third preset step size is preset or configured by the network device.
The terminal equipment according to claim 66, wherein the PRACH first target received power is obtained based on the value of the third power parameter multiplied by at least part of the first parameters.
The terminal device according to claim 69, wherein the value of the third power parameter is one of the following:

The number of transmissions based on PRACH is determined from a plurality of fourth candidate values; wherein the plurality of fourth candidate values are greater than 1;

Determined based on the second reference value of the third power parameter and the fourth adjustment amount, the fourth adjustment amount is determined based on the number of PRACH transmissions and the fourth preset step size; wherein, the third power parameter The second reference value and/or the fourth preset step size is greater than 1; the fourth preset step size is preset or configured by the network device.
The terminal device according to claim 59, wherein the power parameter includes a fourth power parameter; the fourth power parameter is used to replace a second parameter in the first parameter;

The fourth power parameter includes at least one of the following: preamble target reception enhancement power, power adjustment enhancement step size, and preamble format enhancement offset.
The terminal device according to claim 71, wherein the first power value is determined based on parameters of the fourth power parameter and the first parameter except the second parameter.
The terminal device according to claim 72, wherein the fourth power parameter includes a preamble target reception enhancement power, the second parameter includes a preamble target reception power; wherein the preamble target reception enhancement The value of the power is greater than the value of the preamble target received power;

And/or, when the fourth power parameter includes a power adjustment step size, the second parameter includes a power adjustment step size; wherein the value of the power adjustment step size is greater than the power adjustment step size. value;

And/or, when the fourth power parameter includes a preamble format enhancement offset, the second parameter includes a preamble format offset; wherein the value of the preamble format enhancement offset is greater than the preamble format offset. The value of the code format offset.
The terminal device according to claim 58, wherein the power parameter includes a fifth power parameter; the value of the fifth power parameter includes: a first value and a second value of the fifth power parameter; Wherein, the first value is greater than the second value.
The terminal device according to claim 74, wherein the first power value is determined based on the first value of the fifth power parameter.
The terminal equipment according to claim 74, wherein when PRACH is not transmitted based on enhanced transmission power, the second value of the fifth power parameter is used to determine the first transmission power; wherein the first The transmission power is less than the enhanced transmission power.
The terminal device according to any one of claims 74 to 76, wherein the fifth power parameter includes at least one of the following: preamble target received power, power adjustment step size, and preamble format offset.
The terminal equipment according to claim 50, wherein the enhanced transmission power is equal to the maximum transmission power of the terminal equipment.
A network device that includes:

The second communication unit is configured to send first information; wherein the first information is used by the terminal device to determine to send the physical random access channel PRACH based on enhanced transmission power.
The network device according to claim 79, wherein the first information includes instructing the terminal device to transmit PRACH based on the enhanced transmission power.
The network device according to claim 79 or 80, wherein the first information is used to indicate a value of a power parameter, and the power parameter is used to determine the enhanced transmission power.
The network device according to claim 80, wherein the second communication unit is used to send second information, the second information is used to indicate a value of a power parameter, and the power parameter is used to determine the enhanced Transmit power.
The network device according to any one of claims 80 to 82, wherein the second communication unit is used to configure a first threshold value to the terminal device; the first threshold value is used by the terminal device to The downlink signal detection result is judged; wherein, the first threshold value is carried by one of the following: feature combination preamble; random access channel RACH public configuration parameters; public configuration parameters of message msg A; beam failure recovery configuration; msg A configuration parameter in RACH public configuration parameters;

And/or, the second communication unit is configured to configure a second threshold value to the terminal device, and the second threshold value is used by the terminal device to determine the first threshold value.
The network device according to any one of claims 80 to 83, wherein the second communication unit is configured to send first configuration information to the terminal device, where the first configuration information includes a method for determining the first A first parameter of transmission power; the first transmission power is smaller than the enhanced transmission power.
The network device according to claim 81 or 82, wherein the power parameter includes a first power parameter, and the value of the first power parameter is greater than 1.
The network device according to claim 85, wherein the second communication unit is used to configure a plurality of first candidate values corresponding to the first power parameter for the terminal device, the plurality of first candidate values Used by the terminal device to determine the value of the first power parameter; wherein the plurality of first candidate values are greater than 1;

Alternatively, the second communication unit is used to configure the reference value of the first power parameter and the first preset step size for the terminal device; the reference value of the first power parameter and the first preset step size. , used by the terminal device to determine the value of the first power parameter; wherein the reference value of the first power parameter and/or the first preset step size is greater than 1.
The network device according to claim 81 or 82, wherein the power parameter includes a second power parameter; the value of the second power parameter is greater than 0.
The network device according to claim 87, wherein the second communication unit is used to configure a plurality of second candidate values corresponding to the second power parameter for the terminal device; the plurality of second candidate values Used by the terminal device to determine the value of the second power parameter; wherein the plurality of second candidate values are greater than 0;

Alternatively, the second communication unit is used to configure the reference value of the second power parameter and the second preset step size for the terminal device; the reference value of the second power parameter and the second preset step size. , used by the terminal device to determine the value of the second power parameter; wherein the reference value of the second power parameter and/or the second preset step is greater than 0.
The network device of claim 81 or 82, wherein the power parameter includes a third power parameter.
The network device according to claim 89, wherein the value of the third power parameter is greater than 0.
The network device according to claim 90, wherein the second communication unit is used to configure a plurality of third candidate values corresponding to the third power parameter for the terminal device; the plurality of third candidate values Used by the terminal device to determine the value of the third power parameter; wherein the plurality of third candidate values are greater than 0;

Alternatively, the second communication unit is used to configure the first reference value and the third preset step size of the third power parameter for the terminal device; the first reference value and the third preset step size of the third power parameter; The preset step size is used by the terminal device to determine the value of the third power parameter; wherein the first reference value of the third power parameter and/or the third preset step size is greater than 0.
The network device according to claim 89, wherein the value of the third power parameter is greater than 1.
The network device according to claim 92, wherein the second communication unit is used to configure a plurality of fourth candidate values corresponding to the third power parameter for the terminal device; the plurality of fourth candidate values Used by the terminal device to determine the value of the third power parameter; wherein the plurality of fourth candidate values are greater than 1;

Alternatively, the second communication unit is used to configure the second reference value and the fourth preset step size of the third power parameter for the terminal device; the second reference value of the third power parameter and the fourth preset step size; The preset step size is used by the terminal device to determine the value of the third power parameter; wherein the second reference value of the third power parameter and/or the fourth preset step size is greater than 1.
The network device according to claim 81 or 82, wherein the power parameter includes a fourth power parameter; the fourth power parameter is used to replace the second parameter in the first parameter;

Wherein, the fourth power parameter includes at least one of the following: preamble target reception enhancement power, power adjustment enhancement step size, and preamble format enhancement offset.
The network device according to claim 81 or 82, wherein the power parameter includes a fifth power parameter;

The value of the fifth power parameter includes: a first value and a second value of the fifth power parameter; wherein the first value is greater than the second value.
The network device according to claim 95, wherein the fifth power parameter includes at least one of the following: preamble target received power, power adjustment step size, and preamble format offset.
A terminal device, including: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, so that the terminal device executes claims 1 to 30 any one of the methods.
A network device, including: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, so that the network device executes claims 31 to 48 any one of the methods.
A chip includes: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 30, or 31 to 48.
A computer-readable storage medium for storing a computer program, which when the computer program is run by a device, causes the device to perform the method according to any one of claims 1 to 30, or 31 to 48.
A computer program product includes computer program instructions that cause a computer to execute the method according to any one of claims 1 to 30 or 31 to 48.