WO2023019438A1

WO2023019438A1 - Communication method, and terminal, network device, medium, chip, product and program

Info

Publication number: WO2023019438A1
Application number: PCT/CN2021/113069
Authority: WO
Inventors: 李海涛; 胡奕
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2023-02-23
Also published as: CN117413592A

Abstract

Provided in the embodiments of the present application are a communication method, a terminal, a network device, a medium, a chip, a product and a program. The method comprises: a terminal sending a first preamble to a network device, wherein at least one of the first preamble, an index of the first preamble, and a first resource that carries the first preamble has an association relationship with a transmission power of the terminal.

Description

Communication method, terminal, network equipment, medium, chip, product and program

technical field

The embodiments of the present application relate to the technical field of mobile communication, and specifically relate to a communication method, terminal, network device, medium, chip, product, and program.

Background technique

The random access process refers to the process before the terminal sends a random access preamble to try to access the network and establishes a basic signaling connection with the network. Sending the random access preamble to the network device by the terminal is a key step when the terminal initiates random access to the network device.

How the network device determines the parameter information of the terminal that initiates the random access preamble has been a problem that technicians have been concerned about for a long time.

Contents of the invention

Embodiments of the present application provide a communication method, a terminal, a network device, a medium, a chip, a product, and a program.

In the first aspect, the embodiment of the present application provides a communication method, the method including:

The terminal sends the first preamble to the network device;

Wherein, at least one of the first preamble, the index of the first preamble, and the first resource bearing the first preamble has an association relationship with the transmit power of the terminal.

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

The network device receives the first preamble sent by the terminal;

In a third aspect, the embodiment of the present application provides a terminal, including:

A transceiver unit, configured to send the first preamble to the network device;

In a fourth aspect, the embodiment of the present application provides a network device, including:

A transceiver unit, configured to receive the first preamble sent by the terminal;

In a fifth aspect, the embodiment of the present application provides a terminal, including: a memory and a processor,

the memory stores a computer program executable on the processor,

The above method is realized when the processor executes the program.

In a sixth aspect, the embodiment of the present application provides a network device, including: a memory and a processor,

the memory stores a computer program executable on the processor,

The above method is realized when the processor executes the program.

In a seventh aspect, the embodiment of the present application provides a computer storage medium, where one or more programs are stored in the computer storage medium, and the one or more programs can be executed by one or more processors, so as to implement the foregoing method.

In an eighth aspect, the embodiment of the present application provides a chip, including: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the above method.

In the ninth aspect, the embodiment of the present application provides a computer program product, the computer program product includes a computer storage medium, the computer storage medium stores a computer program, and the computer program includes instructions executable by at least one processor, when The instructions implement the above method when executed by the at least one processor.

In a tenth aspect, the embodiment of the present application provides a computer program, the computer program causes a computer to execute the above method.

In this embodiment of the present application, since at least one of the first preamble, the index of the first preamble, and the first resource carrying the first preamble has an associated relationship with the transmit power of the terminal, the terminal can pass the transmitted The first preamble indicates the transmit power of the terminal to the network device, so that the network device can determine the transmit power of the terminal according to receiving the first preamble sent by the terminal.

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application;

FIG. 2 is a schematic flow diagram of a four-step random access method provided by an embodiment of the present application;

FIG. 3 is a schematic flow diagram of a two-step random access method provided by an embodiment of the present application;

FIG. 4 is a schematic flowchart of a communication method provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a first RACH resource pool and a second RACH resource pool provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of another first RACH resource pool and a second RACH resource pool provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of another first RACH resource pool and a second RACH resource pool provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of a structural composition of a terminal provided in an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a network device provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a communication device provided by 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. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application. Multiple or multiple in the embodiments of the present application refer to at least two or at least two, respectively.

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

As shown in FIG. 1 , a communication system 100 may include a terminal 110 and a network device 120 . The network device 120 can communicate with the terminal 110 through an air interface. Multi-service transmission is supported between the terminal 110 and the network device 120 .

It should be understood that the embodiment of the present application is only described by using the communication system 100 as an example, but the embodiment of the present application is not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (Long Term Evolution, LTE) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Communication System (Universal Mobile Telecommunication System, UMTS), Internet of Things (Internet of Things, IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication system (such as 6G communication system), etc.

In the communication system 100 shown in FIG. 1 , the network device 120 may be an access network device that communicates with the terminal 110 . The access network device can provide communication coverage for a specific geographical area, and can communicate with the terminal 110 located in the coverage area.

The terminal in this application may be called a user equipment (User Equipment, UE), a mobile station (Mobile Station, MS) or a mobile terminal (Mobile Terminal, MT), etc. The terminal may include one or a combination of at least two of the following: server, mobile phone, tablet computer (Pad), computer with wireless transceiver function, palmtop computer, desktop computer, personal digital assistant, portable media player, Smart speakers, navigation devices, smart watches, smart glasses, smart necklaces and other wearable devices, pedometers, digital TVs, virtual reality (Virtual Reality, VR) terminal equipment, augmented reality (Augmented Reality, AR) terminal equipment, industrial control Wireless terminals in (industrial control), wireless terminals in self driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, transportation safety Wireless terminals in smart cities, wireless terminals in smart homes, and cars, vehicle-mounted devices, vehicle-mounted modules, wireless modems, and handheld devices in the Internet of Vehicles system ), Customer Premise Equipment (CPE), smart home appliances, sensors, video surveillance equipment.

The network devices in this embodiment of the present application may include access devices and/or core network devices.

The access equipment may include one or a combination of at least two of the following: an evolved base station (Evolutional Node B, eNB or eNodeB) in a Long Term Evolution (Long Term Evolution, LTE) system, a Next Generation Radio Access Network (Next Generation Radio Access Network, NG RAN) equipment, base station (gNB) in NR system, small station, micro station, wireless controller in Cloud Radio Access Network (Cloud Radio Access Network, CRAN), Wireless-Fidelity (Wireless-Fidelity, Wi-Fi) access point, transmission reception point (TRP), relay station, access point, vehicle equipment, wearable device, hub, switch, bridge, router, future evolution of public land mobile network ( Network equipment in Public Land Mobile Network, PLMN), etc.

The core network equipment can be 5G core network (5G Core, 5GC) equipment, and the core network equipment can include one or a combination of at least two of the following: access and mobility management function (Access and Mobility Management Function, AMF), authentication server Function (Authentication Server Function, AUSF), user plane function (User Plane Function, UPF), session management function (Session Management Function, SMF), location management function (Location Management Function, LMF). In other embodiments, the core network device may also be an Evolved Packet Core (EPC) device of an LTE network, for example, a data gateway (Session Management Function+Core Packet Gateway, SMF+ PGW-C) equipment. It should be understood that SMF+PGW-C can realize the functions of SMF and PGW-C at the same time. In the process of network evolution, the above-mentioned core network equipment may be called by other names, or a new network entity may be formed by dividing functions of the core network, which is not limited in this embodiment of the present application.

Various functional units in the communication system 100 may also establish a connection through a next generation network (next generation, NG) interface to implement communication.

For example, the terminal establishes an air interface connection with the access network device through the NR interface to transmit user plane data and control plane signaling; the terminal can establish a control plane signaling connection with the AMF through the NG interface 1 (N1 for short); the access network device For example, a next-generation wireless access base station (gNB) can establish a user plane data connection with UPF through NG interface 3 (N3 for short); an access network device can establish a control plane signaling connection with AMF through NG interface 2 (N2 for short); UPF can establish control plane signaling connection with SMF through NG interface 4 (abbreviated as N4); UPF can exchange user plane data with data network through NG interface 6 (abbreviated as N6); AMF can establish with SMF through NG interface 11 (abbreviated as N11) Control plane signaling connection: the SMF can establish a control plane signaling connection with the PCF through the NG interface 7 (N7 for short).

FIG. 1 exemplarily shows a base station, a core network device, and two terminals. Optionally, the wireless communication system 100 may include multiple base station devices and each base station may include other numbers of terminals within the coverage area. This embodiment of the present application does not limit it.

It should be noted that FIG. 1 is only an illustration of a system applicable to this application, and of course, the method shown in the embodiment of this application may also be applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship. It should also be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is 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 indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation. It should also be understood that the "correspondence" mentioned in the embodiments of the present application may mean that there is a direct correspondence or an indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated. , configuration and configured relationship. It should also be understood that the "predefined", "protocol agreement", "predetermined" or "predefined rules" mentioned in the embodiments of this application may be pre-saved in the device (for example, including terminals and network devices) Corresponding codes, tables, or other methods that can be used to indicate relevant information, and this application does not limit the specific implementation methods. For example, pre-defined may refer to defined in the protocol. It should also be understood that in the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, and this application does not limit this .

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

With people's pursuit of speed, delay, high-speed mobility, and energy efficiency, as well as the diversity and complexity of services in future life, 5G technology has been proposed. The main application scenarios of 5G are: enhanced Mobile Broadband (eMBB), Ultra-reliable and Low Latency Communications (URLLC), and massive MachineType Communication (mMTC).

The demand for eMBB is growing rapidly for the purpose of acquiring multimedia content, services and data. On the other hand, since eMBB may be deployed in different scenarios, such as indoors, urban areas, and rural areas, the capabilities and requirements vary greatly, so it cannot be generalized and must be analyzed in detail in combination with specific deployment scenarios. Typical applications of URLLC include: industrial automation, electric power automation, telemedicine operations (surgery), traffic safety guarantee, etc. The typical characteristics of mMTC include: high connection density, small data volume, delay-insensitive services, low cost and long service life of modules, etc.

New Radio (NR) can also be deployed independently or non-independently. In order to reduce air interface signaling, quickly restore wireless connections, and quickly restore data services in the 5G network environment, a new radio resource control (Radio Resource Control) is proposed. , RRC) state, that is, the RRC inactive (RRC_INACTIVE) state, which is different from the RRC idle (RRC_IDLE) and RRC active (RRC_ACTIVE) states.

RRC_IDLE: Mobility is UE-based cell selection and reselection, paging is initiated by the core network (Core Network, CN), and the paging area is configured by the CN. There is no context and no RRC connection at the base station side.

RRC_CONNECTED: There is an RRC connection, and a context exists between the base station and the UE. The network side knows the location of the UE at the specific cell level, the mobility is controlled by the network side, and unicast data can be transmitted between the UE and the base station.

RRC_INACTIVE: Mobility is UE-based cell selection and reselection, there is a connection between CN-NR, the context exists on a certain base station, paging is triggered by the radio access network (Radio Access Network, RAN), and paging based on RAN The area is managed by the RAN, and the network side knows the location of the UE based on the paging area level of the RAN.

The random access process can be triggered by at least one of the following events, that is, the terminal can trigger the random access process by at least one of the following events: a wireless connection is established when the UE initially accesses: the UE changes from the RRC_IDLE state to the RRC_CONNECTED state; the RRC connection is reestablished Process: UE reestablishes wireless connection after wireless link failure; handover: UE needs to establish uplink synchronization with a new cell; in RRC_CONNECTED state, downlink (Downlink, DL) data arrives, and uplink (UpLink, UL) In the out-of-sync state; in the RRC_CONNECTED state, UL data arrives, and the UL is in the out-of-sync state or there is no PUCCH resource for sending SR; the scheduling request (Scheduling Request, SR) fails; the synchronous reconfiguration request from RRC; UE from The RRC_INACTIVE state is converted to the RRC_CONNECTED state; time calibration is established during the secondary cell (Secondary Cell, SCell) addition process; other system information (System Information, SI) is requested; beam failure recovery.

Figure 2 is a schematic flow diagram of a four-step random access method provided in the embodiment of the present application. As shown in Figure 2, the four-step random access method includes the following steps:

S201. The terminal sends Msg1 to the network device.

Msg1 includes a random access preamble (Random Access Preamble) or a preamble (preamble). The terminal selects a physical random access channel (Physical Random Access Channel, PRACH) resource, and sends the selected preamble on the selected PRACH. If it is random access based on non-contention, the preamble can be specified by the base station.

S202. The network device sends a Msg2 to the terminal, where the Msg2 includes a Random Access Response (Random Access Response, RAR).

After the terminal sends Msg1, it can open a random access response time window (ra-ResponseWindow), and monitor the Random Access-Radio Network Temporary Identifier (RA-RNTI) within the random access response time window Scrambled Physical Downlink Control Channel (PDCCH). The RA-RNTI is related to the PRACH time-frequency resource used by the UE to send Msg1.

After the terminal successfully receives the PDCCH scrambled by the RA-RNTI, the terminal can obtain the Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH, and the PDSCH includes the RAR.

If the terminal receives the PDCCH scrambled by the RA-RNTI, and the RAR contains the sent preamble index (preamble index), the terminal considers that the random access response has been successfully received.

S203. The terminal sends Msg3 to the network device.

Msg3 may be used to notify the network device of what event triggers the random access channel (Random Access Channel, RACH) process (for example, one or more trigger reasons). For example, if it is an initial access random process, Msg3 will carry UE ID and establishment cause; if it is RRC reestablishment, it will carry UE ID and establishment cause in connection state. The terminal starts a random access contention resolution timer (RA-ContentionResolutionTimer) after sending Msg3, and monitors the PDCCH during the running of the timer to receive Msg4.

S204. The network device sends Msg4 to the terminal.

Among them, Msg4 has two functions, one is used for contention conflict resolution, and the other is for the network device to transmit the RRC configuration message to the terminal. There are two ways to resolve contention conflicts: one is that if the UE carries a Cell-Radio Network Temporary Identifier (C-RNTI) in Msg3, then Msg4 uses the C-RNTI scrambled PDCCH scheduling, and the other One is that if UE does not carry C-RNTI in Msg3, such as initial access, Msg4 uses temporary cell radio network temporary identifier (temporary C-RNTI, TC-RNTI) to scramble PDCCH scheduling. The resolution of the conflict is that the UE receives the PDSCH of Msg4, and matches the Service Data Unit (Service Data Unit, SDU) of the Common Control Channel (Common Control Channel, CCCH) in the PDSCH.

FIG. 3 is a schematic flow diagram of a two-step random access method provided in the embodiment of the present application. As shown in FIG. 3, the steps included in the two-step random access method are as follows:

S301. The terminal sends the MsgA to the network device.

MsgA may include the contents of Msg1 and Msg3 above.

S302. The network device sends the MsgB to the terminal.

MsgB may include the contents of Msg2 and Msg4 above.

Both the four-step random access scheme in FIG. 2 and the two-step random access scheme in FIG. 3 can be applied to contention-based random access.

In the non-contention-based random access process, the Msg1 that the terminal can send to the network device includes the preamble assigned by the network device to the terminal, and then the network device can send Msg2 to the terminal. In this way, the non-contention-based random access process Finish.

During the random access process, the network device can know the time when the terminal sends the preamble according to the RACH time-frequency resource used by the terminal to receive the preamble, and then determine the timing advance (Timing Advance) of the terminal according to the sending time and receiving time of the preamble , TA), and inform the terminal through RAR. The PRACH in the embodiment of the present application can be understood in the same way as the RACH.

The RACH configuration can be notified by the network device to the UE in the form of broadcast. The RACH configuration includes RACH time-frequency resource configuration and initial premble root sequence configuration.

The RACH time-domain resource configuration is indicated by a RACH configuration index, through which the RACH resource repetition period, the number of ROs contained in a RACH resource repetition period, and the duration of each RO can be known.

The RACH frequency domain resource configuration includes 1 RACH start frequency domain resource index and the number of RACH resources that can be frequency division multiplexed at the same time (that is, the number of continuous RACH frequency domain resources). The RACH frequency domain resource configuration can determine the RACH The frequency domain resource is a continuous frequency domain resource.

Each cell broadcasts an initial preamble root sequence, and based on the configured initial preamble root sequence, the available preamble set of the cell can be obtained by cyclic shifting.

One aspect of uplink coverage enhancement is to introduce repetitive transmission for Msg3 Physical Uplink Shared Channel (PUSCH) transmission in the random access process, so as to achieve the purpose of enhancing Msg3 coverage. The terminal can request Msg3 PUSCH repetition through a specific Msg1 according to at least the downlink coverage situation, for example, when the measured RSRP value is lower than a pre-configured threshold. After receiving the specific Msg1, the network can allocate the enhanced Msg3 resource for repetition transmission to the UE through the UL grant in the RAR in the Msg2.

A reduced capability UE (reduced capability UE, Redcap) may also be called an NR-lite or a Redcap terminal or a reduced capability terminal or a terminal of a low power level. At present, there are three main scenarios for simplifying user equipment provisioning.

Industrial Wireless Sensors (Industrial Wireless Sensors), compared with URLLC, industrial wireless sensors have relatively low latency and reliability requirements, and the cost and power consumption of industrial wireless sensors are also lower than URLLC and eMBB.

Video surveillance (Video surveillance), mainly used in smart cities, industrial factories and other video surveillance. Data collection and processing in smart cities facilitate more effective monitoring and control of urban resources and provide more effective services to urban residents.

Wearables, including smart watches, rings, electronic health equipment, and some medical monitoring equipment, etc., a common feature of these devices is the small size of the device.

The common requirements of the above three scenarios include: lower equipment cost and complexity, among which the basic consensus is to reduce the bandwidth and receiving antenna; require relatively small equipment size; require coverage equivalent to eMBB, if the receiving antenna is reduced , lower bandwidth, lower power level, or other coverage loss caused by reducing UE complexity needs to be compensated.

The maximum transmit power of common terminals supports 23dBm. For RedCap terminals, especially in scenarios where battery power is limited, such as industrial sensors and actuators, batteries are difficult to replace in time, which requires such terminals to operate at a lower transmit power level to improve battery life. For example, limit the maximum transmit power to 10-14dBm. For such terminals, due to the reduction of transmit power, the uplink transmission range will be reduced compared with ordinary terminals.

Due to the difference in the maximum transmission power between a low power level terminal and a normal power level terminal, the degree of limitation of uplink coverage is different. Specifically, the uplink coverage of a terminal with a low power level will be smaller than that of a terminal with a normal power level, although the downlink coverage of a cell with a low power level terminal and a terminal with a normal power level may be the same or different not big.

For a terminal with limited uplink coverage, the network may adopt an uplink coverage enhancement technology, that is, by introducing a multiple repetition transmission (repetition) technology to improve a receiving signal-to-noise ratio, thereby improving uplink coverage. For terminals with different maximum transmit powers, to achieve uplink coverage at the same location, the required number of uplink transmission repetitions is different. The number of uplink transmission repetitions configured for low-power terminals is greater than that configured for terminals with normal power levels.

For example, in the process of four-step random access, the coverage enhancement introduced for Msg3 PUSCH, that is, the number of Msg3 PUSCH repetitions (repetition) required for different terminal power levels is different, so it is necessary to enable the base station to Distinguish terminals of different power levels, and then configure different Msg3 PUSCH repetition times.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific examples. As optional solutions, the above related technologies may be combined with the technical solutions of the embodiments of the present application in any combination, and all of them belong to the protection scope of the embodiments of the present application. The embodiment of the present application includes at least part of the following content.

Fig. 4 is a schematic flow diagram of a communication method provided in the embodiment of the present application. As shown in Fig. 4, the method includes:

S401. The terminal sends a first preamble to a network device; wherein, at least one of the first preamble, an index of the first preamble, and a first resource carrying the first preamble, and the The transmit power of the terminal has a correlation.

The index in the embodiment of the present application may also be called index or number in other embodiments.

In some embodiments, the transmission power may have an association relationship with the power level, so that at least one of the first preamble, the index of the first preamble, and the first resource carrying the first preamble , may be associated with the power level of the terminal. In this way, the network device may determine the transmit power and/or power level of the terminal based on at least one of the index of the received first preamble and the first resource bearing the first preamble.

The association between at least one of the first preamble, the index of the first preamble, and the first resource carrying the first preamble, and the transmit power and/or power level of the terminal may be a network configured by the device, or configured by the terminal itself.

In some implementations, the first preamble may be a terminal-determined preamble. In some other implementation manners, the first preamble may be a preamble allocated by the network device to the terminal. In this case, the first preamble may be a terminal-specific preamble.

The preamble in this embodiment of the present application may be referred to as a preamble sequence or a preamble sequence. For example, the first preamble may be referred to as a first preamble sequence or a first preamble sequence.

The first preamble may have a corresponding relationship with the index of the first preamble, and different preambles may correspond to different indexes of the preamble. The index of the preamble may be referred to as a sequence index. Each cell can use 64 preambles, and the terminal can determine the first preamble from the 64 preambles, and send the determined first preamble to the network device; wherein, the first preamble can be one of the 64 preambles A preamble of . The 64 preamble indexes used by each cell can correspond to the 64 preambles one by one, and the terminal can determine a preamble index from the 64 preamble indexes, and send the first preamble on the determined preamble index preamble.

The first resources bearing the first preamble may include time domain resources and/or frequency domain resources. For example, the time domain resource corresponding to the first resource may have an association relationship with the transmit power and/or power level of the terminal. For another example, the frequency domain resource corresponding to the first resource may have an association relationship with the transmit power and/or power level of the terminal. For another example, the time domain resource and the frequency domain resource corresponding to the first resource may have an association relationship with the transmit power and/or power level of the terminal.

The terminal may send a random access request (rach requset, RA), Msg1 or MsgA to the network device, and the random access request, Msg1 or MsgA may carry the first preamble. In some embodiments, the terminal can detect one or more synchronization signal blocks (Synchronization Signal Block, SSB) sent by the network device every half frame, and then select the SSB with the strongest signal or a signal strength greater than SSB from one or more SSBs. The SSB of the threshold value, and then based on the association relationship between the SSB and the random access channel opportunity (Physical Random Access Channel Occasion, RO), determine the first RO corresponding to the selected SSB, and send the first RO corresponding to the selected SSB. a preamble. The first resource bearing the first preamble may be a first RO in all ROs associated with one or more SSBs sent by the network device.

Wherein, RO is the minimum unit of the random access radio resource in the time-frequency domain. The first RO may include one RO, or the first RO may include multiple ROs, or the first RO may include less than one RO, and the number of indexes in the index range corresponding to the less than one RO is less than 64. For example, less than one RO may include 1/2, 1/4, 1/8, or 1/16.

In some embodiments, the transmit power of the terminal may be the maximum transmit power of the terminal. In other embodiments, the transmit power of the terminal may be the minimum transmit power or the current transmit power of the terminal. The maximum transmission power, the minimum transmission power or the current transmission power may be a preset transmission power or may be a transmission power supported by the terminal.

In some embodiments, the power level of the terminal may correspond to the maximum transmit power of the terminal, and the maximum transmit power of the terminal varies with the power level of the terminal. The power level of the terminal may include the maximum transmission power level of the terminal. For example, the maximum transmit power level of the terminal may include the maximum transmit power level when the terminal sends information to the network device. In some other embodiments, the power level of the terminal may correspond to the minimum transmit power or the current transmit power of the terminal.

In some implementation manners, the power level of the terminal may be related to the type of the terminal, and the power levels corresponding to different types of terminals may be the same or different. For example, the type of the terminal may include a simplified terminal (such as a simplified user equipment) or a common terminal, and the power level of the simplified terminal may be the same as or different from that of the common terminal. In some implementation manners, some ordinary terminals may be terminals of a low power level, and other ordinary terminals may be terminals of an ordinary power level. In other implementations, for the same common terminal, it can work at a low power level, or it can work at a normal power level, for example, the common terminal can be switched between power level at work. In some other implementation manners, some simplified terminals may be terminals of a low power level, and other simplified terminals may be terminals of a normal power level. In some other implementations, for the same simplified terminal, it can work at a low power level, or it can work at a normal power level, for example, it can be switched by triggering the simple The power level of an ordinary terminal at work.

In the embodiment of the present application, the transmit power corresponding to the normal power level is greater than the transmit power corresponding to the low power level. The normal power level may be the high power level mentioned in the following embodiments.

In some implementation manners, the terminal may store the power level of the terminal in itself, so that the terminal can obtain the power level of the terminal from itself. In some other implementation manners, the terminal may store the transmission power of the terminal in itself, so that the terminal can obtain the transmission power from itself, and determine the power level of the terminal based on the transmission power, for example, when the transmission power is greater than the first threshold, determine that the terminal The power level of the terminal is the first power level; when the transmission power is less than or equal to the first threshold, determine that the power level of the terminal is the second power level.

In some implementations, the power level of the terminal may include the first power level or the second power level. Wherein, the transmit power of the terminal corresponding to the first power level is greater than the first threshold, and the transmit power of the terminal corresponding to the second power level is less than or equal to the first threshold; or it can be said that the transmit power of the terminal corresponding to the first power level is greater than The transmit power of the terminal corresponding to the second power level.

In some other implementation manners, the power level of the terminal may also include a third power level, a fourth power level, or a fifth power level, and so on. For example, when the power level of the terminal includes the third power level, the transmit power of the terminal corresponding to the third power level is greater than the second threshold, and the second threshold is greater than the first threshold; or it can be said that the terminal corresponding to the third power level The transmit power is greater than the transmit power of the terminal corresponding to the first power level. For another example, when the power level of the terminal includes the third power level, the transmit power of the terminal corresponding to the third power level is less than or equal to the third threshold, and the third threshold is smaller than the first threshold; or it can be said that the third power level The transmit power of the corresponding terminal is smaller than the transmit power of the terminal corresponding to the second power level.

In some embodiments, the terminal includes a terminal at a first power level or a terminal at a second power level; the transmit power of the terminal at the first power level is the first transmit power, and the transmit power of the terminal at the second power level The transmit power is a second transmit power; the first transmit power is greater than or less than the second transmit power.

In some embodiments, the method also includes:

The terminal receives the first resource pool configuration information and/or the second resource pool configuration information sent by the network device; the first resource pool corresponds to the first transmission power, and the second resource pool corresponds to the second transmission power; the The first resource pool includes one or more random access channel RACH resources, and the second resource pool includes one or more RACH resources; the first transmit power is greater than or less than the second transmit power;

The terminal determines the first resource from the first resource pool or the second resource pool based on the transmit power of the terminal.

When the terminal receives the first resource pool configuration information and/or the second resource pool configuration information, the terminal may determine the first resource pool and/or the second resource pool configuration information based on the first resource pool configuration information and/or the second resource pool configuration information. Second resource pool. The first resource pool may correspond to the first transmit power, and the second resource pool may correspond to the second transmit power.

In some embodiments, when the terminal determines the first resource pool and/or the second resource pool based on the configuration information of the first resource pool and/or the configuration information of the second resource pool, it may determine the relationship between the first resource pool and the first resource pool. The transmission power corresponds, and the second resource pool corresponds to the second transmission power. For example, the terminal may determine that the first resource pool corresponds to the first transmission power, and that the second resource pool corresponds to the second transmission power, based on that the configuration information of the first resource pool is set before the configuration information of the second resource pool. For another example, the terminal may determine that the time domain of the first resource pool is smaller than the time domain of the second resource pool, and/or, determine that the frequency domain of the first resource pool is smaller than the frequency domain of the second resource pool, determine that the first resource pool and the second resource pool One transmit power corresponds, and the second resource pool corresponds to the second transmit power.

In some other implementation manners, when the network device sends the configuration information of the first resource pool and the configuration information of the second resource pool to the terminal, it may simultaneously indicate that the first resource pool corresponds to the first transmission power, and the second resource pool corresponds to the second transmission power. transmit power.

In some embodiments, the transmit power of the terminal may be the first transmit power or the second transmit power. The terminal may be a first power level terminal or a second power level terminal. In some other embodiments, the power level of the terminal may be greater than one of the two transmit powers. For example, the transmit power of the terminal may be the first transmit power, the second transmit power, or the third transmit power, and the third transmit power The power is incorporated into the first transmit power or the second transmit power. In this way, the terminal may be a terminal of the first power level, a terminal of the second power level, or a terminal of the third power level. For example, when the terminal is one of the high power level, medium power level or low power level, the terminal may determine both the high power level and the medium power level as the high power level (or also called the normal power level), or, The terminal may determine both the medium power level and the low power level as the low power level. Wherein, the first transmit power, the second transmit power, and the third transmit power correspond to terminals of the first power level, terminals of the second power level, and terminals of the third power level, respectively.

The maximum transmit power of the terminal corresponding to the first power level may be greater than or smaller than the maximum transmit power of the terminal corresponding to the second power level. For example, the first power level may be a high power level and the second power level may be a low power level, or the first power level may be a low power level and the second power level may be a high power level.

In some implementation manners, the first resource pool may be associated with a first transmit power and/or a first power level, and the second resource pool corresponds to a second transmit power and/or a second power level.

The first resource pool configuration information may include time domain configuration information and/or frequency domain configuration information of the first resource pool, and the second resource pool configuration information may include time domain configuration information and/or frequency domain configuration information of the second resource pool.

The time domain configuration information of the first resource pool and the second resource pool may include: subframe positions, time slot positions, symbol positions, At least one of a subframe range, a slot range, a symbol range, and the like. For example, the time-domain configuration information of the first resource pool may include: the 0th to 11th symbols of the 0th time slot of the 1st subframe in half a radio frame; the time-domain configuration information of the second resource pool may include: The 0th to 11th symbols of the 0th time slot of the 3rd subframe in half a radio frame. For another example, the time domain configuration information of the first resource pool may include: the 0th time slot to the 1st time slot of the first subframe in half a radio frame, and the time domain configuration information of the first resource pool may include: The 0th time slot to the 2nd time slot of the third subframe in half a radio frame. For another example, the time domain configuration information of the first resource pool may include: the first half of the time domain in the half radio frame, and the time domain configuration information of the second resource pool may include: the second half of the time domain in the half radio frame.

The frequency domain configuration information of the first resource pool and the second resource pool may include: frequency domain positions and/or frequency domain ranges of the first resource pool and the second resource pool in half a radio frame (also called a half frame). In some real-time manners, the frequency domain configuration information of the first resource pool and the second resource pool may be related to the working frequency band of the terminal or the working frequency range of the terminal. For example, the operating frequency range of the terminal is A to B, the frequency domain configuration information of the first resource pool may include: greater than 0 and less than or equal to C; the frequency domain configuration information of the second resource pool may include: greater than C. C is a frequency greater than A and less than B.

In some embodiments, the network device may determine the time-frequency position of the RO associated with the SSB sent to the terminal based on the association relationship between the SSB and the RO, and determine the first resource pool configuration information and the second resource pool configuration information based on the time-frequency position of the RO. 2. Resource pool configuration information.

The number of resources corresponding to the first resource pool may be greater than, less than or equal to the number of resources corresponding to the second resource pool. The number of resources may include the number of resource elements (resource elements, REs) or the number of resource blocks (resource blocks, RBs).

In some other embodiments, the terminal may store the first resource pool configuration information and the second resource pool configuration information, so as to determine the first resource pool and the second resource pool configuration information based on the first resource pool configuration information and the second resource pool configuration information. pool. In this way, the network device can maintain the same first resource pool configuration information and the second resource pool configuration information as the terminal.

In some embodiments, the terminal receiving the first resource pool configuration information and/or the second resource pool configuration information sent by the network device includes: if the network device can determine the transmit power of the terminal, the The terminal receives the first resource pool configuration information or the second resource pool configuration information sent by the network device; when the network device cannot determine the transmit power of the terminal, the terminal receives the The first resource pool configuration information and the second resource pool configuration information sent by the network device.

The scenario where the network device can determine the transmit power of the terminal is: the network device has already determined the transmit power of the terminal before receiving the first preamble sent by the terminal. For example, the network device has received information (such as a preamble, etc.) sent by the terminal or other network devices before receiving the first preamble, and the transmit power of the terminal can be determined based on the sent information. In some implementation manners, when the terminal recovers based on cell handover or beam failure, etc., the network device can determine the transmit power of the terminal.

A scenario where the network device cannot determine the transmit power of the terminal is: the network device cannot determine the transmit power to the terminal before receiving the first preamble sent by the terminal. For example, when a terminal establishes a wireless connection or transitions from an RRC_INACTIVE state to an RRC_CONNECTED state based on initial access, the network device cannot determine the transmit power of the terminal.

In some embodiments, in the case of non-contention-based random access, the network device can determine the transmit power of the terminal; in the case of contention-based random access, the network device cannot determine the transmit power of the terminal .

In some embodiments, the terminal determines the first resource from the first resource pool or the second resource pool based on the transmit power of the terminal, including:

If the transmit power of the terminal is the first transmit power, the terminal determines the first resource from the first resource pool;

If the transmit power of the terminal is the second transmit power, the terminal determines the first resource from the second resource pool.

In some implementation manners, the terminal may determine the first resource from the first resource pool when the power level of the terminal is the first power level; If the level is the second power level, the terminal determines the first resource from the second resource pool.

The terminal can determine the power level of the terminal by itself. For example, the terminal may store its own power level information, so as to determine the terminal's own power level. For another example, the terminal may determine the maximum transmit power of the terminal, and determine that the power level of the terminal is the first power level or the second power level based on the relationship between the maximum transmit power and the first threshold.

The terminal may determine the power level of the terminal through other devices or network devices. For example, the terminal may send the maximum transmit power of the terminal to other devices or network devices, and receive the power level of the terminal determined based on the relationship between the maximum transmit power and the first threshold and sent by other devices or network devices.

The transmit power and/or power level of the same terminal may be constant, or may be variable. For example, when a certain terminal is working normally, the transmit power and/or power level of the terminal can be high transmit power and/or power level; A level may be a low transmit power and/or power level. For another example, when the remaining power of the terminal is greater than the target power, the transmit power and/or power level of the terminal is a high transmit power and/or power level; when the remaining power of the terminal is less than or equal to the target power, the terminal transmit The power and/or power class is a low transmit power and/or power class. For another example, the terminal can receive the user's operation on the terminal to switch the transmission power and/or power level of the terminal. In some implementation scenarios, if the terminal is working at a low transmission power and/or power level, the time delay for the user to discover the terminal In the case of high transmission speed and low data transmission speed, the terminal can be triggered to make the terminal work at a high transmission power and/or power level.

In this embodiment of the application, a terminal with the first power level and/or the first transmission power needs to send the first preamble in the first resource pool, and a terminal with the second power level and/or the second transmission power needs to send the first preamble in the second resource pool. The preamble is sent in the resource pool, so that the network device can determine the power level and/or transmit power of the terminal based on whether the first preamble is sent in the first resource pool or in the second resource pool.

In some embodiments, the first preamble set corresponding to the first resource pool is the same as the second preamble set corresponding to the second resource pool; or, the first resource pool corresponds to the first preamble set , the second resource pool corresponds to a second preamble set; the first preamble set and the second preamble set have no intersection or are partially identical.

In some implementations, the first set of preambles may include all preambles corresponding to a network device (eg, 64 preambles). The second set of preambles may include all preambles corresponding to the network device (eg, 64 preambles).

In some other implementation manners, the first preamble set may include a part of all preambles corresponding to the network device, and the second preamble set may include another part of all the preambles corresponding to the network device. For example, the first preamble set corresponding to the first resource pool may include preambles with indices 0 to 31, and the second preamble set corresponding to the second resource pool may include preambles with indices 32 to 63.

In still some implementation manners, the preambles included in the first preamble set may be partly the same as the preambles included in the second preamble set.

In the embodiment of the present application, in the case that terminals of different power levels use different resource pools to send the first preamble, how to select the first preamble is not limited.

In some embodiments, the first resource pool and the second resource pool do not overlap in the time domain, and/or, the first resource pool and the second resource pool do not overlap in the frequency domain.

For example, the first resource pool and the second resource pool may not overlap in the time domain, and may not overlap or partially overlap or completely overlap in the frequency domain. For another example, the first resource pool and the second resource pool do not overlap in the frequency domain, and may not overlap, partially overlap, or completely overlap in the time domain. In the embodiment of the present application, the resources corresponding to the first resource pool and the resources corresponding to the second resource pool have no overlap.

In some embodiments, the first resource pool is continuous in the frequency domain; the second resource pool is continuous in the frequency domain.

In some embodiments, the first resource pool configuration information includes: first time domain resource configuration information and first frequency domain resource configuration information; the second resource pool configuration information includes: second time domain resource configuration information;

The first resource pool is determined based on the first time domain resource configuration information and the first frequency domain resource configuration information;

The second resource pool is determined based on the second time domain resource configuration information and the first frequency domain resource configuration information.

The first time domain resource configuration information configures the time domain of the first resource pool, the first frequency domain resource configuration information configures the frequency domain of the first resource pool; the second time domain resource configuration information configures the second resource pool time domain.

The first time domain resource configuration information and the second time domain resource configuration information are different configuration information. The time domain of the first resource pool is different from the time domain of the second resource.

The terminal may determine the first resource pool based on the configured time domain of the first resource pool and the frequency domain of the first resource pool; the terminal may determine the second resource pool based on the configured time domain of the second resource pool and the frequency domain of the first resource pool. Two resource pools. In this way, the time domains of the first resource pool and the second resource pool are different, and the frequency domains are the same.

In some embodiments, the first resource pool configuration information includes: first time domain resource configuration information and first frequency domain resource configuration information; the second resource pool configuration information includes: second frequency domain resource configuration information;

The second resource pool is determined based on the first time domain resource configuration information and the second frequency domain resource configuration information.

The second frequency domain resource configuration information configures the frequency domain of the second resource pool.

The first frequency domain resource configuration information and the second frequency domain resource configuration information are different configuration information. The frequency domain of the first resource pool is different from the frequency domain of the second resource.

The terminal may determine the first resource pool based on the configured time domain of the first resource pool and the frequency domain of the first resource pool; the terminal may determine the second resource pool based on the configured time domain of the first resource pool and the frequency domain of the second resource pool. Two resource pools. In this way, the first resource pool and the second resource pool have the same time domain and different frequency domains.

In some embodiments, the first resource pool configuration information includes: first time domain resource configuration information and first frequency domain resource configuration information; the second resource pool configuration information includes: second time domain resource configuration information and Second frequency domain resource configuration information;

The second resource pool is determined based on the second time domain resource configuration information and the second frequency domain resource configuration information.

The terminal may determine the first resource pool based on the configured time domain of the first resource pool and the frequency domain of the first resource pool; the terminal may determine the second resource pool based on the configured time domain of the second resource pool and the frequency domain of the second resource pool. Two resource pools. In this way, both the time domain and the frequency domain of the first resource pool and the second resource pool are different.

In some embodiments, the first resource pool configuration information and the second resource pool configuration information are carried in a system message.

In some implementation manners, the first resource pool configuration information and the second resource pool configuration information may be carried in a system information block (System Information Block, SIB) in a system message. For example, the first resource pool configuration information and the second resource pool configuration information may be carried in any one of SIB1 to SIB7, or carried in SIB8, SIB9 or SIB10 that may exist after SIB7. In some other implementation manners, the first resource pool configuration information and the second resource pool configuration information may be carried in a master information block (Master Information Block, MIB) in a system message.

In some embodiments, the method also includes:

The terminal receives a first set of configuration information and/or a second set of configuration information sent by the network device; the first set corresponds to a first transmit power, and the second set corresponds to a second transmit power; the The first set includes a plurality of preambles and/or indexes of a plurality of preambles; the second set includes a plurality of preambles and/or indexes of a plurality of preambles; the first transmit power is greater than or less than the first transmit power Two transmit power;

The terminal determines at least one of the first preamble and an index of the first preamble from the first set or the second set based on the transmit power of the terminal.

When the terminal receives the configuration information of the first set and the configuration information of the second set, the terminal may determine the first set and the second set based on the configuration information of the first set and the configuration information of the second set.

In some embodiments, when the terminal determines the first set and the second set based on the configuration information of the first set and the configuration information of the second set, it can determine that the first set corresponds to the first transmission power, and the second set Corresponding to the second transmit power. For example, the terminal may determine that the first set corresponds to the first transmission power and the second set corresponds to the second transmission power based on that the configuration information of the first set is set before the configuration information of the second set. For another example, the terminal may determine that the index of the preamble in the first set is before the index of the preamble in the second set, determine that the first set corresponds to the first transmission power, and the second set corresponds to the second transmission power.

In other embodiments, when the network device sends the first set of configuration information and the second set of configuration information to the terminal, it may simultaneously indicate that the first set corresponds to the first transmission power, and the second set corresponds to the second transmission power. .

The first set corresponds to the first transmit power, and the second set corresponds to the second transmit power may be understood as: the first set is associated with the first transmit power, and the second set is associated with the second transmit power. In other embodiments, the first set may be associated with a first transmit power and/or a first power level, and the second set may be associated with a second transmit power and/or a second power level.

The first set of configuration information may include or indicate a first index range of the preamble, the second set of configuration information may include or indicate a second index range of the preamble, the first index range and the second index range do not overlap, the first The index range and the second index range are contiguous or not. For example, the first index range may be 0 to 31, and the second index range may be 32 to 63. For another example, the first index range may be 0 to 10, and the second index range may be 32 to 63.

The terminal may determine the first set and the second set based on the first index range and the second index range. For example, the terminal may determine 64 preambles (or preamble sequences) based on the root sequence sent by the network device, and then determine the first index sequence including multiple preambles based on the 64 preambles and the first index range and the second index range. A set and a second set including multiple preambles; wherein, the index range corresponding to the 64 preambles is 0 to 63. For another example, based on the first index range and the second index range, the terminal may determine a first set of indexes including multiple preambles and a second set of indexes including multiple preambles.

In other embodiments, the terminal may store the first set of configuration information and the second set of configuration information, so as to determine the first set and the second set based on the first set of configuration information and the second set of configuration information. In this way, the network device and the terminal can maintain the same first set of configuration information and the second set of configuration information.

In some embodiments, the terminal may determine the first preamble or the index of the first preamble from the first set or the second set in the following manner: the terminal selects Or determine the first preamble or the index of the first preamble in the second set. For example, the terminal may first determine one or more preambles corresponding to the grouping information of the preamble, and then determine one of the one or more preambles belonging to the first set or the second set as the first preamble . For another example, the terminal may first determine the preambles in the first set or the second set, and then select the first preamble corresponding to the grouping information of the preambles from the preambles in the first set or the second set.

In some embodiments, the terminal receives the first set of configuration information and/or the second set of configuration information sent by the network device, including:

If the network device can determine the transmit power of the terminal, the terminal receives the configuration information of the first set or the configuration information of the second set sent by the network device;

If the network device cannot determine the transmit power of the terminal, the terminal receives the first set of configuration information and the second set of configuration information sent by the network device.

In some embodiments, the terminal determines at least one of the first preamble and the index of the first preamble from the first set or the second set based on the transmit power of the terminal. One of:

When the transmit power of the terminal is the first transmit power, the terminal determines at least one of the first preamble and an index of the first preamble from the first set;

If the transmit power of the terminal is the second transmit power, the terminal determines at least one of the first preamble and an index of the first preamble from the second set.

In this embodiment of the present application, a terminal with the first transmission power may determine the first preamble or the index of the first preamble through the first set, and a terminal with the second transmission power may determine the first preamble or the index of the first preamble through the second set. The index of the first preamble, so that the network device can determine the transmit power of the terminal based on whether the first preamble or the index of the first preamble belongs to the first set or the second set.

In some embodiments, the RACH resource pool corresponding to the first set is the same as the RACH resource pool corresponding to the second set.

In this way, when the terminal determines the first preamble through the first set and the second set, the terminal can send the first preamble through one RO or multiple ROs in the RACH resource pool.

In some embodiments, the plurality of preambles included in the first set and the plurality of preambles included in the second set do not intersect; or,

The indices of the multiple preambles included in the first set do not overlap with the indices of the multiple preambles included in the second set.

In some embodiments, the indices of the multiple preambles included in the first set are continuous or discontinuous, and the indices of the multiple preambles included in the second set are continuous or discontinuous.

In some embodiments, the first set of configuration information and the second set of configuration information are carried in system messages.

In some implementation manners, the configuration information of the first set and the configuration information of the second set may be carried in a system information block (System Information Block, SIB) in a system message. For example, the configuration information of the first set and the configuration information of the second set may be carried in any one of SIB1 to SIB7, or carried in SIB8, SIB9 or SIB10 that may exist after SIB7. In some other implementation manners, the configuration information of the first set and the configuration information of the second set may be carried in a master information block (Master Information Block, MIB) in the system message.

In some embodiments, the method also includes:

The terminal repeatedly transmits the physical uplink shared channel PUSCH to the network device, and the number of repeated transmissions of the PUSCH corresponds to the transmit power of the terminal.

When the transmission power of the terminal is the first transmission power, the number of repeated transmissions of PUSCH is the first number of repeated transmissions, and when the transmission power of the terminal is the second transmission power, the number of repeated transmissions of PUSCH is the second repeated transmission The number of times, the first number of repeated transmissions and the second number of repeated transmissions are different.

Wherein, the number of repeated transmissions corresponding to the high power level (or normal power level) is smaller than the number of repeated transmissions corresponding to the low power level.

In some embodiments, PUSCH may be transmitted via Msg3. In other embodiments, the PUSCH may be transmitted by the terminal to the network device after the random access is completed. In yet other embodiments, PUSCH may be transmitted through Msg1.

In some implementation manners, the number of repeated transmissions of the PUSCH may be determined by the terminal itself, or may be configured by the network device.

In some embodiments, the method also includes:

The terminal receives a random access response sent by the network device; the random access response carries first indication information, and the first indication information is used to indicate the number of repeated transmission times of the PUSCH.

The random access response can be carried in Msg2.

When the transmission power of the terminal is the first transmission power, the number of repeated transmissions indicated by the network device to the terminal is the first number of repeated transmissions; when the transmission power of the terminal is the second transmission power, the number of repeated transmissions indicated by the network device to the terminal The repeated transmission times are the second repeated transmission times.

In some embodiments, the number of repeated transmissions indicated by the network device to the terminal is the first number of repeated transmissions and the second number of repeated transmissions, which may be a constant number of repeated transmissions, or may be a number of repeated transmissions that changes dynamically. For example, the network device can determine the number of repeated transmissions based on the number of users in the cell corresponding to the network device. If the number of users in the cell is large, the first number of repeated transmissions and the second number of repeated transmissions can be set lower. When the number of internal users is small, the first repeated transmission times and the second repeated transmission times can be set higher.

Based on the perspective of network equipment, the communication method in the embodiment of the present application is described below:

An embodiment of the present application provides a communication method. The method includes: a network device receives a first preamble sent by a terminal; wherein, the first preamble, the index of the first preamble, and the At least one of the first resources has an association relationship with the transmit power of the terminal.

In some embodiments, the method also includes:

The network device sends the first resource pool configuration information and/or the second resource pool configuration information to the terminal; the first resource pool corresponds to the first transmit power, and the second resource pool corresponds to the second transmit power; The first resource pool includes one or more random access channel RACH resources, and the second resource pool includes one or more RACH resources; the first transmit power is greater than or less than the second transmit power; the second A resource is determined from the first resource pool or the second resource pool.

In some embodiments, the network device sends the first resource pool configuration information and/or the second resource pool configuration information to the terminal, including:

If the network device can determine the transmit power of the terminal, the network device sends the first resource pool configuration information or the second resource pool configuration information to the terminal;

If the network device cannot determine the transmit power of the terminal, the network device sends the first resource pool configuration information and the second resource pool configuration information to the terminal.

In some embodiments, when the transmit power of the terminal is the first transmit power, the first resource is determined from the first resource pool;

If the transmit power of the terminal is the second transmit power, the first resource is determined from the second resource pool.

In some embodiments, the first preamble set corresponding to the first resource pool is the same as the second preamble set corresponding to the second resource pool; or,

The first resource pool corresponds to a first preamble set, and the second resource pool corresponds to a second preamble set; the first preamble set and the second preamble set have no intersection or are partially identical.

In some embodiments, the method also includes:

The network device sends a first set of configuration information and/or a second set of configuration information to the terminal; the first set corresponds to a first transmit power, and the second set corresponds to a second transmit power; the second set corresponds to a second transmit power; A set includes a plurality of preambles and/or indexes of a plurality of preambles; the second set includes a plurality of preambles and/or indexes of a plurality of preambles; the first transmit power is greater than or less than the second transmit power;

At least one of the first preamble and the index of the first preamble is determined from the first set or the second set.

In some embodiments, the network device sends the first set of configuration information and/or the second set of configuration information to the terminal, including:

If the network device can determine the transmit power of the terminal, the network device sends the first set of configuration information or the second set of configuration information to the terminal;

If the network device cannot determine the transmit power of the terminal, the network device sends the first set of configuration information and the second set of configuration information to the terminal.

In some embodiments, when the transmit power of the terminal is the first transmit power, at least one of the first preamble and the index of the first preamble is obtained from the first determined in the set;

If the transmit power of the terminal is the second transmit power, at least one of the first preamble and the index of the first preamble is determined from the second set.

In some embodiments, the method also includes:

The network device receives the physical uplink shared channel PUSCH repeatedly transmitted by the terminal, and the number of repeated transmissions of the PUSCH corresponds to the transmit power of the terminal.

In some embodiments, the method also includes:

The network device sends a random access response to the terminal; the random access response carries first indication information, and the first indication information is used to indicate the number of repeated transmission times of the PUSCH.

The above description of the method embodiment on the network device side is similar to the description of the above method embodiment on the terminal side, and has similar beneficial effects as the method embodiment on the terminal side. For the technical details that are not disclosed in the embodiment of the method on the network device side of this application, please refer to the description of the embodiment of the method on the terminal side of this application for understanding, or obtain it through reasoning from the embodiment of the method on the terminal side.

In this embodiment of the application, the network configures a first RACH resource pool (corresponding to the above-mentioned first resource pool) and a second RACH resource pool (corresponding to the above-mentioned second resource pool), and the first RACH resource pool and the second RACH resource pool The resource pools correspond to the same preamble group (for example, all may correspond to 64 preambles), and different RACH resource pools have different time domain and/or frequency domain resource configurations. Terminals of normal power consumption level (terminals corresponding to the above-mentioned first power level) should use the RACH resource in the first RACH resource pool, and terminals of low power consumption level (terminals corresponding to the above-mentioned second power level) should use the second RACH resource pool. RACH resources in the RACH resource pool. In some embodiments, the terminal may receive configuration information sent by the network to configure the first RACH resource pool and the second RACH resource pool. The configuration information is the common configuration of the cell and is carried in the system message, for example, SIBx (wherein, x is an integer greater than or equal to 1).

FIG. 5 is a schematic diagram of a first RACH resource pool and a second RACH resource pool provided by an embodiment of the present application. As shown in FIG. 5 , the time domains of the first RACH resource pool and the second RACH resource pool are different (that is, the first The RACH resource pool and the second RACH resource pool have no overlapping area in the time domain), and the frequency domains of the first RACH resource pool and the second RACH resource pool are the same.

In some embodiments, the RACH time-domain resource configuration includes: a first RACH time-domain resource configuration (corresponding to the above-mentioned first time-domain resource configuration information) and a second RACH time-domain resource configuration (corresponding to the above-mentioned second time-domain resource configuration information), the first RACH time domain resource and the second RACH time domain resource do not have any overlapping area in the time domain.

The RACH frequency domain resource configuration includes: a first RACH frequency domain resource configuration (corresponding to the above-mentioned first frequency domain resource configuration information), and the first RACH frequency domain resource configuration corresponds to a segment of continuous RACH frequency domain resources.

The first RACH resource pool corresponds to the first RACH time domain resource configuration and the first RACH frequency domain resource configuration; the second RACH resource pool corresponds to the second RACH time domain resource configuration and the first RACH frequency domain resource configuration.

FIG. 6 is a schematic diagram of another first RACH resource pool and a second RACH resource pool provided by the embodiment of the present application. As shown in FIG. 6, the time domains of the first RACH resource pool and the second RACH resource pool are the same, and the first The RACH resource pool and the second RACH resource pool have different frequency domains (that is, the first RACH resource pool and the second RACH resource pool have no overlapping area in the frequency domain).

In some embodiments, the RACH frequency domain resource configuration includes: a first RACH frequency domain resource configuration and a second RACH frequency domain resource configuration (corresponding to the above-mentioned second frequency domain resource configuration information), the first RACH frequency domain resource and The second RACH frequency domain resource does not have any overlapping area in the frequency domain.

The RACH time domain resource configuration includes: first RACH time domain resource configuration.

The first RACH resource pool corresponds to the first RACH time domain resource configuration and the first RACH frequency domain resource configuration; the second RACH resource pool corresponds to the second RACH frequency domain resource configuration and the first RACH time domain resource configuration.

Fig. 7 is a schematic diagram of another first RACH resource pool and a second RACH resource pool provided by the embodiment of the present application. As shown in Fig. 7, the time domains of the first RACH resource pool and the second RACH resource pool are different, and the first RACH resource pool The frequency domains of the RACH resource pool and the second RACH resource pool are different. In this case, the first RACH resource pool and the second RACH resource pool have no overlapping area in the time domain, but have a partial overlapping area in the frequency domain.

In some embodiments, the RACH time domain resource configuration includes: a first RACH time domain resource configuration and a second RACH time domain resource configuration. The RACH frequency domain resource configuration includes: a first RACH frequency domain resource configuration and a second RACH frequency domain resource configuration.

The first RACH resource pool corresponds to the first RACH time domain resource configuration and the first RACH frequency domain resource configuration; the second RACH resource pool corresponds to the second RACH time domain resource configuration and the second RACH frequency domain resource configuration.

The first RACH resource pool and the second RACH resource pool have the following characteristics: the first RACH resource pool and the second RACH resource pool do not have any overlapping area in the time-frequency domain.

For a terminal with a normal power consumption level, the terminal can only use RACH resources in the first RACH resource pool during the random access process. For a terminal with a low power consumption level, the terminal can only use RACH resources in the second RACH resource pool during the random access process.

The embodiment of the present application is not limited thereto. In some other embodiments, the first RACH resource pool and the second RACH resource pool may have no overlapping area in the frequency domain, but have a partial overlapping area in the time domain. In still some embodiments, the first RACH resource pool and the second RACH resource pool may have no overlapping area in the frequency domain and no overlapping area in the time domain.

In this embodiment of the present application, the network configures a first RACH resource pool and two different preamble sets (corresponding to the above-mentioned first set and second set). A terminal with a normal power consumption level can only use the first preamble set in the first RACH resource pool (corresponding to the above-mentioned first set), and a terminal with a low power consumption level can only use the second preamble set in the first RACH resource pool ( corresponding to the second set above).

The terminal may receive configuration information sent by the network device, and configure the first RACH resource pool and two preamble sets, that is, the first preamble set and the second preamble set. The first preamble set and the second preamble set do not overlap at all. For a terminal with a normal power consumption level, the terminal can only use the first preamble set in the first RACH resource pool during the random access process. For a terminal with a low power consumption level, the terminal can only use the second preamble set in the first RACH resource pool during the random access process.

In the embodiment of the present application, by configuring different RO resources and/or different preamble sets for terminals of normal power consumption level and terminals of low power consumption level respectively, the base station can distinguish terminals of different power consumption levels by receiving Msg1 , and then realize that the base station schedules Msg3 PUSCH transmissions with different repetition (repetition) times for terminals with different power consumption levels, so as to ensure the same uplink coverage.

In some embodiments, for two types of terminals with different power consumption levels, the RO resources are different, but the preamble sets are the same; or, the RO resources are the same, but the preamble sets are different; or, the RO resources are different, but the preamble sets are different.

The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application. These simple modifications all belong to the protection scope of the present application. For example, the various specific technical features described in the above specific implementation manners can be combined in any suitable manner if there is no contradiction. Separately. As another example, any combination of various implementations of the present application can also be made, as long as they do not violate the idea of the present application, they should also be regarded as the content disclosed in the present application. For another example, on the premise of no conflict, the various embodiments described in this application and/or the technical features in each embodiment can be combined with the prior art arbitrarily, and the technical solutions obtained after the combination should also fall within the scope of this application. protected range.

It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not be used in this application. The implementation of the examples constitutes no limitation. In addition, in this embodiment of the application, the terms "downlink", "uplink" and "sidelink" are used to indicate the transmission direction of signals or data, wherein "downlink" is used to indicate that the transmission direction of signals or data is sent from the station The first direction to the user equipment in the cell, "uplink" is used to indicate that the signal or data transmission direction is the second direction sent from the user equipment in the cell to the station, and "side line" is used to indicate that the signal or data transmission direction is A third direction sent from UE1 to UE2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiment of the present application, the term "and/or" is only an association relationship describing associated objects, indicating that there may be three relationships. Specifically, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

FIG. 8 is a schematic structural diagram of a terminal provided by an embodiment of the present application. As shown in FIG. 8, the terminal 800 includes: a transceiver unit 801, configured to send a first preamble to a network device;

In some implementation manners, the terminal 800 may further include a determining unit 802, configured to determine the first preamble.

In some embodiments, the transceiver unit 801 is further configured to receive the first resource pool configuration information and/or the second resource pool configuration information sent by the network device; the first resource pool corresponds to the first transmit power, and the second resource pool The resource pool corresponds to the second transmit power; the first resource pool includes one or more random access channel RACH resources, and the second resource pool includes one or more RACH resources; the first transmit power is greater than or less than the The second transmit power;

The determining unit 802 is further configured to determine the first resource from the first resource pool or the second resource pool based on the transmit power of the terminal.

In some embodiments, the transceiver unit 801 is further configured to, if the network device can determine the transmit power of the terminal, the terminal receives the first resource pool configuration information sent by the network device or the configuration information of the second resource pool; if the network device cannot determine the transmit power of the terminal, the terminal receives the configuration information of the first resource pool and the second resource pool sent by the network device configuration information.

In some embodiments, the determining unit 802 is further configured to determine the first resource from the first resource pool when the transmit power of the terminal is the first transmit power; in the terminal In a case where the transmit power is the second transmit power, determine the first resource from the second resource pool.

In some embodiments, the transceiver unit 801 is further configured to receive the first set of configuration information and/or the second set of configuration information sent by the network device; the first set corresponds to the first transmit power, and the first set of The two sets correspond to the second transmission power; the first set includes multiple preambles and/or multiple preamble indexes; the second set includes multiple preambles and/or multiple preamble indexes; the the first transmit power is greater than or less than the second transmit power;

The determining unit 802 is further configured to determine at least one of the first preamble and the index of the first preamble from the first set or the second set based on the transmit power of the terminal .

In some embodiments, the transceiving unit 801 is further configured to, if the network device can determine the transmit power of the terminal, the terminal receives the first set of configuration information sent by the network device or the The configuration information of the second set; in the case that the network device cannot determine the transmit power of the terminal, the terminal receives the configuration information of the first set and the configuration information of the second set sent by the network device configuration information.

In some embodiments, the determining unit 802 is further configured to determine the first preamble and the first At least one of the indexes of the preamble; when the transmit power of the terminal is the second transmit power, determine the first preamble and the first preamble from the second set At least one of the indexes.

In some embodiments, the transceiving unit 801 is further configured to repeatedly transmit a physical uplink shared channel PUSCH to the network device, and the number of repeated transmissions of the PUSCH corresponds to the power level of the terminal.

In some embodiments, the transceiver unit 801 is further configured to receive a random access response sent by the network device; the random access response carries first indication information, and the first indication information is used to indicate the PUSCH The number of repeated transfers.

FIG. 9 is a schematic diagram of the structural composition of the network device provided in the embodiment of the present application. As shown in FIG. 9, the network device 900 includes:

A transceiver unit 901, configured to receive the first preamble sent by the terminal;

In some implementation manners, the network device 900 further includes: a determining unit 902, configured to be based on at least one of the first preamble, the index of the first preamble, and the first resource bearing the first preamble First, determine the transmit power of the terminal.

In some embodiments, the transceiver unit 901 is further configured to send the first resource pool configuration information and/or the second resource pool configuration information to the terminal; the first resource pool corresponds to the first transmit power, and the second resource pool The resource pool corresponds to the second transmit power; the first resource pool includes one or more random access channel RACH resources, and the second resource pool includes one or more RACH resources; the first transmit power is greater than or less than the The second transmit power; the first resource is determined from the first resource pool or the second resource pool.

In some embodiments, the transceiving unit 901 is further configured to: if the network device can determine the transmit power of the terminal, the network device sends the first resource pool configuration information or the Second resource pool configuration information; when the network device cannot determine the transmit power of the terminal, the network device sends the first resource pool configuration information and the second resource pool configuration information to the terminal .

In some embodiments, the transceiver unit 901 is further configured to send the first set of configuration information and/or the second set of configuration information to the terminal; the first set corresponds to the first transmission power, and the second set Corresponding to the second transmission power; the first set includes multiple preambles and/or multiple preamble indexes; the second set includes multiple preambles and/or multiple preamble indexes; the first The transmit power is greater than or less than the second transmit power;

In some embodiments, the transceiving unit 901 is further configured to send the first set of configuration information or the Configuration information of the second set; when the network device cannot determine the transmit power of the terminal, the network device sends the configuration information of the first set and the configuration information of the second set to the terminal .

In some embodiments, the multiple preambles included in the first set do not overlap with the multiple preambles included in the second set; or, the multiple preambles included in the first set The index and the indexes of the multiple preambles included in the second set have no intersection.

In some embodiments, the transceiver unit 901 is further configured to receive a Physical Uplink Shared Channel (PUSCH) repeatedly transmitted by the terminal, where the number of repeated transmissions of the PUSCH corresponds to the transmit power of the terminal.

In some embodiments, the transceiver unit 901 is further configured to send a random access response to the terminal; the random access response carries first indication information, and the first indication information is used to indicate repeated transmission of the PUSCH frequency.

Those skilled in the art should understand that the relevant descriptions of the terminal and the network device in the embodiment of the present application can be understood with reference to the relevant description of the communication method in the embodiment of the present application.

FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application. The communication device 1000 may be a terminal or a network device. The communication device 1000 shown in FIG. 10 includes a processor 1001 and a memory 1002. The memory 1002 stores a computer program that can run on the processor 1001. When the processor 1001 executes the program, it implements any of the above-mentioned embodiments. communication method.

For example, when the processor 1001 executes the program, it realizes: sending the first preamble to the network device, or receiving the first preamble sent by the terminal; wherein, the first preamble, the first preamble At least one of the index and the first resource bearing the first preamble has an association relationship with the transmit power of the terminal.

Wherein, the memory 1002 may be a separate device independent of the processor 1001 , or may be integrated in the processor 1001 .

In some implementations, as shown in FIG. 10 , the communication device 1000 may further include a transceiver 1003, and the processor 1001 may control the transceiver 1003 to communicate with other devices, specifically, to send information or data to other devices, or Receive messages or data from other devices.

Wherein, the transceiver 1003 may include a transmitter and a receiver. The transceiver 1003 may further include antennas, and the number of antennas may be one or more.

In some implementation manners, the communication device 1000 may specifically be the network device of the embodiment of the present application, and the communication device 1000 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. Let me repeat.

In some implementation manners, the communication device 1000 may specifically be the terminal of the embodiment of the present application, and the communication device 1000 may implement the corresponding processes implemented by the terminal in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here. .

The embodiment of the present application may also provide a computer storage medium, the computer storage medium stores one or more programs, and the one or more programs can be executed by one or more processors, so as to realize any of the above-mentioned embodiments communication method.

For example, the one or more programs may be executed by one or more processors, so as to: send the first preamble to the network device, or receive the first preamble sent by the terminal; wherein, the first preamble , at least one of an index of the first preamble, and a first resource bearing the first preamble, which have an association relationship with the transmit power of the terminal.

FIG. 11 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1100 shown in FIG. 11 includes a processor 1101, and the processor 1101 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

For example, the processor 1101 may invoke and run a computer program from the memory, so as to: send a first preamble to a network device, or receive a first preamble sent by a terminal; wherein, the first preamble, the first preamble A preamble index, at least one of the first resource carrying the first preamble, and the transmit power of the terminal are associated.

In some implementations, as shown in FIG. 11 , the chip 1100 may further include a memory 1102 . Wherein, the processor 1101 can invoke and run a computer program from the memory 1102, so as to implement the method in the embodiment of the present application.

Wherein, the memory 1102 may be an independent device independent of the processor 1101 , or may be integrated in the processor 1101 .

In some implementations, the chip 1100 may further include an input interface 1103 . Wherein, the processor 1101 can control the input interface 1103 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.

In some implementations, the chip 1100 may further include an output interface 1104 . Wherein, the processor 1101 can control the output interface 1104 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.

In some implementation manners, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in the methods of the embodiments of the present application. For the sake of brevity, details are not repeated here.

In some implementation manners, the chip can be applied to the terminal in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal in the methods of the embodiments of the present application. For the sake of brevity, details are not repeated here.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

The embodiment of the present application may also provide a computer program product, the computer program product includes a computer storage medium, the computer storage medium stores a computer program, and the computer program includes instructions executable by at least one processor, when the When the instructions are executed by the at least one processor, the communication method in any of the foregoing embodiments is implemented.

For example, when the instructions are executed by the at least one processor, it is realized that: sending a first preamble to a network device, or receiving a first preamble sent by a terminal; wherein, the first preamble, the first At least one of the index of the preamble and the first resource bearing the first preamble has an association relationship with the transmit power of the terminal.

The embodiments of the present application may further provide a computer program, where the computer program enables a computer to execute the communication method in any of the foregoing embodiments. For example, the computer program enables the computer to execute: sending the first preamble to the network device, or receiving the first preamble sent by the terminal; wherein, the first preamble, the index of the first preamble, and the At least one of the first resources of the first preamble has an association relationship with the transmit power of the terminal.

It should be pointed out that the above descriptions of the terminal, network equipment, computer storage medium, chip, computer program product, and computer program embodiment are similar to the description of the above method embodiment, and have similar beneficial effects as the method embodiment. For the technical details not disclosed in the terminal, network device, computer storage medium, chip, computer program product, and computer program embodiments of this application, please refer to the description of the method embodiment of this application for understanding.

The processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processors may include any one or more of the following integrations: general-purpose processors, application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), digital signal processors (Digital Signal Processor, DSP), digital signal processing devices (Digital Signal Processing Device, DSPD), Programmable Logic Device (Programmable Logic Device, PLD), Field Programmable Gate Array (Field Programmable Gate Array, FPGA), Central Processing Unit (Central Processing Unit, CPU), Graphics Processing Unit (Graphics Processing Unit, GPU), embedded neural-network processing units (NPU), controller, microcontroller, microprocessor, programmable logic device, discrete gate or transistor logic device, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory computer storage medium in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (Static RAM, SRAM), 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 (Synchlink DRAM, SLDRAM ) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above-mentioned memory computer storage medium is illustrative but not restrictive. For example, the memory in the embodiment of the present application may 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, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disc, etc., which can store program codes. .

The methods disclosed in several method embodiments provided in this application can be combined arbitrarily to obtain new method embodiments under the condition of no conflict. The features disclosed in several product embodiments provided in this application can be combined arbitrarily without conflict to obtain new product embodiments. The features disclosed in several method or device embodiments provided in this application can be combined arbitrarily without conflict to obtain new method embodiments or device embodiments.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A communication method, the method comprising:

The terminal sends the first preamble to the network device;

Wherein, at least one of the first preamble, the index of the first preamble, and the first resource bearing the first preamble has an association relationship with the transmit power of the terminal.
The method according to claim 1, wherein the method further comprises:

The terminal receives the first resource pool configuration information and/or the second resource pool configuration information sent by the network device; the first resource pool corresponds to the first transmission power, and the second resource pool corresponds to the second transmission power; the The first resource pool includes one or more random access channel RACH resources, and the second resource pool includes one or more RACH resources; the first transmit power is greater than or less than the second transmit power;

The terminal determines the first resource from the first resource pool or the second resource pool based on the transmit power of the terminal.
The method according to claim 2, wherein the terminal receiving the first resource pool configuration information and/or the second resource pool configuration information sent by the network device includes:

If the network device can determine the transmit power of the terminal, the terminal receives the first resource pool configuration information or the second resource pool configuration information sent by the network device;

If the network device cannot determine the transmit power of the terminal, the terminal receives the first resource pool configuration information and the second resource pool configuration information sent by the network device.
The method according to claim 2 or 3, wherein the terminal determines the first resource from the first resource pool or the second resource pool based on the transmit power of the terminal, comprising:

If the transmit power of the terminal is the first transmit power, the terminal determines the first resource from the first resource pool;

If the transmit power of the terminal is the second transmit power, the terminal determines the first resource from the second resource pool.
The method according to any one of claims 2 to 4, wherein,

The first preamble set corresponding to the first resource pool is the same as the second preamble set corresponding to the second resource pool; or,

The first resource pool corresponds to a first preamble set, and the second resource pool corresponds to a second preamble set; the first preamble set and the second preamble set have no intersection or are partially identical.
The method according to any one of claims 2 to 5, wherein the first resource pool and the second resource pool do not overlap in time domain, and/or, the first resource pool and the second resource pool The two resource pools do not overlap in the frequency domain.
The method according to any one of claims 2 to 6, wherein the first resource pool is continuous in the frequency domain; the second resource pool is continuous in the frequency domain.
The method according to any one of claims 2 to 7, wherein the first resource pool configuration information includes: first time domain resource configuration information and first frequency domain resource configuration information; the second resource pool configuration information Including: second time domain resource configuration information;

The first resource pool is determined based on the first time domain resource configuration information and the first frequency domain resource configuration information;

The second resource pool is determined based on the second time domain resource configuration information and the first frequency domain resource configuration information.
The method according to any one of claims 2 to 7, wherein the first resource pool configuration information includes: first time domain resource configuration information and first frequency domain resource configuration information; the second resource pool configuration information Including: second frequency domain resource configuration information;

The first resource pool is determined based on the first time domain resource configuration information and the first frequency domain resource configuration information;

The second resource pool is determined based on the first time domain resource configuration information and the second frequency domain resource configuration information.
The method according to any one of claims 2 to 7, wherein the first resource pool configuration information includes: first time domain resource configuration information and first frequency domain resource configuration information; the second resource pool configuration information Including: second time domain resource configuration information and second frequency domain resource configuration information;

The first resource pool is determined based on the first time domain resource configuration information and the first frequency domain resource configuration information;

The second resource pool is determined based on the second time domain resource configuration information and the second frequency domain resource configuration information.
The method according to any one of claims 2 to 10, wherein the configuration information of the first resource pool and the configuration information of the second resource pool are carried in a system message.
The method according to any one of claims 1 to 11, wherein the method comprises:

The terminal receives a first set of configuration information and/or a second set of configuration information sent by the network device; the first set corresponds to a first transmit power, and the second set corresponds to a second transmit power; the The first set includes a plurality of preambles and/or indexes of a plurality of preambles; the second set includes a plurality of preambles and/or indexes of a plurality of preambles; the first transmit power is greater than or less than the first transmit power Two transmit power;

The terminal determines at least one of the first preamble and an index of the first preamble from the first set or the second set based on the transmit power of the terminal.
The method according to claim 12, wherein the terminal receiving the first set of configuration information and/or the second set of configuration information sent by the network device includes:

If the network device can determine the transmit power of the terminal, the terminal receives the configuration information of the first set or the configuration information of the second set sent by the network device;

If the network device cannot determine the transmit power of the terminal, the terminal receives the first set of configuration information and the second set of configuration information sent by the network device.
The method according to claim 12 or 13, wherein the terminal determines the first preamble and the first preamble from the first set or the second set based on the transmit power of the terminal. At least one of the indices of the preamble, including:

When the transmit power of the terminal is the first transmit power, the terminal determines at least one of the first preamble and an index of the first preamble from the first set;

If the transmit power of the terminal is the second transmit power, the terminal determines at least one of the first preamble and an index of the first preamble from the second set.
The method according to any one of claims 12 to 14, wherein the RACH resource pool corresponding to the first set is the same as the RACH resource pool corresponding to the second set.
The method according to any one of claims 12 to 15, wherein the plurality of preambles included in the first set do not overlap with the plurality of preambles included in the second set; or,

The indices of the multiple preambles included in the first set do not overlap with the indices of the multiple preambles included in the second set.
The method according to any one of claims 12 to 16, wherein the configuration information of the first set and the configuration information of the second set are carried in a system message.
The method according to any one of claims 1 to 17, wherein the method further comprises:

The terminal repeatedly transmits the physical uplink shared channel PUSCH to the network device, and the number of repeated transmissions of the PUSCH corresponds to the transmit power of the terminal.
The method according to claim 18, wherein said method further comprises:

The terminal receives a random access response sent by the network device; the random access response carries first indication information, and the first indication information is used to indicate the number of repeated transmission times of the PUSCH.
The method according to any one of claims 1 to 19, wherein the terminal includes a first power level terminal or a second power level terminal; the transmit power of the first power level terminal is the first transmit power, The transmit power of the terminal at the second power level is a second transmit power; the first transmit power is greater than or less than the second transmit power.
A communication method, the method comprising:

The network device receives the first preamble sent by the terminal;

Wherein, at least one of the first preamble, the index of the first preamble, and the first resource bearing the first preamble has an association relationship with the transmit power of the terminal.
The method according to claim 21, wherein said method further comprises:

The network device sends the first resource pool configuration information and/or the second resource pool configuration information to the terminal; the first resource pool corresponds to the first transmit power, and the second resource pool corresponds to the second transmit power; The first resource pool includes one or more random access channel RACH resources, and the second resource pool includes one or more RACH resources; the first transmit power is greater than or less than the second transmit power; the second A resource is determined from the first resource pool or the second resource pool.
The method according to claim 22, wherein the network device sends the first resource pool configuration information and/or the second resource pool configuration information to the terminal, comprising:

If the network device can determine the transmit power of the terminal, the network device sends the first resource pool configuration information or the second resource pool configuration information to the terminal;

If the network device cannot determine the transmit power of the terminal, the network device sends the first resource pool configuration information and the second resource pool configuration information to the terminal.
The method according to claim 22 or 23, wherein when the transmission power of the terminal is the first transmission power, the first resource is determined from the first resource pool;

If the transmit power of the terminal is the second transmit power, the first resource is determined from the second resource pool.
A method according to any one of claims 22 to 24, wherein,

The first preamble set corresponding to the first resource pool is the same as the second preamble set corresponding to the second resource pool; or,

The first resource pool corresponds to a first preamble set, and the second resource pool corresponds to a second preamble set; the first preamble set and the second preamble set have no intersection or are partially identical.
The method according to any one of claims 22 to 25, wherein the first resource pool and the second resource pool do not overlap in time domain, and/or, the first resource pool and the second resource pool The two resource pools do not overlap in the frequency domain.
The method according to any one of claims 22 to 26, wherein the first resource pool is continuous in the frequency domain; the second resource pool is continuous in the frequency domain.
The method according to any one of claims 22 to 27, wherein the first resource pool configuration information includes: first time domain resource configuration information and first frequency domain resource configuration information; the second resource pool configuration information Including: second time domain resource configuration information;

The first resource pool is determined based on the first time domain resource configuration information and the first frequency domain resource configuration information;

The second resource pool is determined based on the second time domain resource configuration information and the first frequency domain resource configuration information.
The method according to any one of claims 22 to 27, wherein the first resource pool configuration information includes: first time domain resource configuration information and first frequency domain resource configuration information; the second resource pool configuration information Including: second frequency domain resource configuration information;

The first resource pool is determined based on the first time domain resource configuration information and the first frequency domain resource configuration information;

The second resource pool is determined based on the first time domain resource configuration information and the second frequency domain resource configuration information.
The method according to any one of claims 22 to 27, wherein the first resource pool configuration information includes: first time domain resource configuration information and first frequency domain resource configuration information; the second resource pool configuration information Including: second time domain resource configuration information and second frequency domain resource configuration information;

The first resource pool is determined based on the first time domain resource configuration information and the first frequency domain resource configuration information;

The second resource pool is determined based on the second time domain resource configuration information and the second frequency domain resource configuration information.
The method according to any one of claims 22 to 30, wherein the configuration information of the first resource pool and the configuration information of the second resource pool are carried in a system message.
The method according to any one of claims 21 to 31, wherein the method further comprises:

The network device sends a first set of configuration information and/or a second set of configuration information to the terminal; the first set corresponds to a first transmit power, and the second set corresponds to a second transmit power; the second set corresponds to a second transmit power; A set includes a plurality of preambles and/or indexes of a plurality of preambles; the second set includes a plurality of preambles and/or indexes of a plurality of preambles; the first transmit power is greater than or less than the second transmit power;

At least one of the first preamble and the index of the first preamble is determined from the first set or the second set.
The method according to claim 32, wherein the network device sends the first set of configuration information and/or the second set of configuration information to the terminal, comprising:

If the network device can determine the transmit power of the terminal, the network device sends the first set of configuration information or the second set of configuration information to the terminal;

If the network device cannot determine the transmit power of the terminal, the network device sends the first set of configuration information and the second set of configuration information to the terminal.
The method according to claim 32 or 33, wherein, when the transmission power of the terminal is the first transmission power, at least one of the first preamble and the index of the first preamble one, determined from said first set;

If the transmit power of the terminal is the second transmit power, at least one of the first preamble and the index of the first preamble is determined from the second set.
The method according to any one of claims 32 to 34, wherein the RACH resource pool corresponding to the first set is the same as the RACH resource pool corresponding to the second set.
The method according to any one of claims 32 to 35, wherein the plurality of preambles included in the first set do not overlap with the plurality of preambles included in the second set; or,

The indices of the multiple preambles included in the first set do not overlap with the indices of the multiple preambles included in the second set.
The method according to any one of claims 32 to 36, wherein the configuration information of the first set and the configuration information of the second set are carried in a system message.
The method according to any one of claims 21 to 37, wherein the method further comprises:

The network device receives the physical uplink shared channel PUSCH repeatedly transmitted by the terminal, and the number of repeated transmissions of the PUSCH corresponds to the transmit power of the terminal.
The method of claim 38, wherein the method further comprises:

The network device sends a random access response to the terminal; the random access response carries first indication information, and the first indication information is used to indicate the number of repeated transmission times of the PUSCH.
The method according to any one of claims 21 to 39, wherein the terminal includes a first power level terminal or a second power level terminal; the transmit power of the first power level terminal is the first transmit power, The transmit power of the terminal at the second power level is a second transmit power; the first transmit power is greater than or less than the second transmit power.
A terminal comprising:

A transceiver unit, configured to send the first preamble to the network device;

Wherein, at least one of the first preamble, the index of the first preamble, and the first resource bearing the first preamble has an association relationship with the transmit power of the terminal.
A network device comprising:

A transceiver unit, configured to receive the first preamble sent by the terminal;

Wherein, at least one of the first preamble, the index of the first preamble, and the first resource bearing the first preamble has an association relationship with the transmit power of the terminal.
A terminal comprising: a memory and a processor,

the memory stores a computer program executable on the processor,

The processor implements the method according to any one of claims 1 to 20 when executing the program.
A network device, comprising: a memory and a processor,

the memory stores a computer program executable on the processor,

The processor implements the method of any one of claims 21 to 40 when executing the program.
A computer storage medium, the computer storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the method according to any one of claims 1 to 20; or,

The one or more programs can be executed by one or more processors to implement the method of any one of claims 21 to 40.
A chip, comprising: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 20; or,

making the device installed with the chip execute the method according to any one of claims 21 to 40.
A computer program product comprising a computer storage medium storing a computer program comprising instructions executable by at least one processor when said instructions are processed by said at least one processor implement the method described in any one of claims 1 to 20 when executed by a device; or,

The method of any one of claims 21 to 40 is implemented when said instructions are executed by said at least one processor.
A computer program that causes a computer to perform the method according to any one of claims 1 to 20; or,

The computer program causes a computer to execute the method according to any one of claims 21 to 40.